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13175 Add support for IP_RECVTOS
13182 CMSG_ macros should have man pages
Change-ID: I784aa36cfd3c17e3cccbf1fd329fa7e69b663ef9
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--- old/usr/src/uts/common/inet/ip/ip.c
+++ new/usr/src/uts/common/inet/ip/ip.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Copyright (c) 1990 Mentat Inc.
25 25 * Copyright (c) 2017 OmniTI Computer Consulting, Inc. All rights reserved.
26 26 * Copyright (c) 2016 by Delphix. All rights reserved.
27 27 * Copyright (c) 2019 Joyent, Inc. All rights reserved.
28 + * Copyright 2020 OmniOS Community Edition (OmniOSce) Association.
28 29 */
29 30
30 31 #include <sys/types.h>
31 32 #include <sys/stream.h>
32 33 #include <sys/dlpi.h>
33 34 #include <sys/stropts.h>
34 35 #include <sys/sysmacros.h>
35 36 #include <sys/strsubr.h>
36 37 #include <sys/strlog.h>
37 38 #include <sys/strsun.h>
38 39 #include <sys/zone.h>
39 40 #define _SUN_TPI_VERSION 2
40 41 #include <sys/tihdr.h>
41 42 #include <sys/xti_inet.h>
42 43 #include <sys/ddi.h>
43 44 #include <sys/suntpi.h>
44 45 #include <sys/cmn_err.h>
45 46 #include <sys/debug.h>
46 47 #include <sys/kobj.h>
47 48 #include <sys/modctl.h>
48 49 #include <sys/atomic.h>
49 50 #include <sys/policy.h>
50 51 #include <sys/priv.h>
51 52 #include <sys/taskq.h>
52 53
53 54 #include <sys/systm.h>
54 55 #include <sys/param.h>
55 56 #include <sys/kmem.h>
56 57 #include <sys/sdt.h>
57 58 #include <sys/socket.h>
58 59 #include <sys/vtrace.h>
59 60 #include <sys/isa_defs.h>
60 61 #include <sys/mac.h>
61 62 #include <net/if.h>
62 63 #include <net/if_arp.h>
63 64 #include <net/route.h>
64 65 #include <sys/sockio.h>
65 66 #include <netinet/in.h>
66 67 #include <net/if_dl.h>
67 68
68 69 #include <inet/common.h>
69 70 #include <inet/mi.h>
70 71 #include <inet/mib2.h>
71 72 #include <inet/nd.h>
72 73 #include <inet/arp.h>
73 74 #include <inet/snmpcom.h>
74 75 #include <inet/optcom.h>
75 76 #include <inet/kstatcom.h>
76 77
77 78 #include <netinet/igmp_var.h>
78 79 #include <netinet/ip6.h>
79 80 #include <netinet/icmp6.h>
80 81 #include <netinet/sctp.h>
81 82
82 83 #include <inet/ip.h>
83 84 #include <inet/ip_impl.h>
84 85 #include <inet/ip6.h>
85 86 #include <inet/ip6_asp.h>
86 87 #include <inet/tcp.h>
87 88 #include <inet/tcp_impl.h>
88 89 #include <inet/ip_multi.h>
89 90 #include <inet/ip_if.h>
90 91 #include <inet/ip_ire.h>
91 92 #include <inet/ip_ftable.h>
92 93 #include <inet/ip_rts.h>
93 94 #include <inet/ip_ndp.h>
94 95 #include <inet/ip_listutils.h>
95 96 #include <netinet/igmp.h>
96 97 #include <netinet/ip_mroute.h>
97 98 #include <inet/ipp_common.h>
98 99 #include <inet/cc.h>
99 100
100 101 #include <net/pfkeyv2.h>
101 102 #include <inet/sadb.h>
102 103 #include <inet/ipsec_impl.h>
103 104 #include <inet/iptun/iptun_impl.h>
104 105 #include <inet/ipdrop.h>
105 106 #include <inet/ip_netinfo.h>
106 107 #include <inet/ilb_ip.h>
107 108
108 109 #include <sys/ethernet.h>
109 110 #include <net/if_types.h>
110 111 #include <sys/cpuvar.h>
111 112
112 113 #include <ipp/ipp.h>
113 114 #include <ipp/ipp_impl.h>
114 115 #include <ipp/ipgpc/ipgpc.h>
115 116
116 117 #include <sys/pattr.h>
117 118 #include <inet/ipclassifier.h>
118 119 #include <inet/sctp_ip.h>
119 120 #include <inet/sctp/sctp_impl.h>
120 121 #include <inet/udp_impl.h>
121 122 #include <inet/rawip_impl.h>
122 123 #include <inet/rts_impl.h>
123 124
124 125 #include <sys/tsol/label.h>
125 126 #include <sys/tsol/tnet.h>
126 127
127 128 #include <sys/squeue_impl.h>
128 129 #include <inet/ip_arp.h>
129 130
130 131 #include <sys/clock_impl.h> /* For LBOLT_FASTPATH{,64} */
131 132
132 133 /*
133 134 * Values for squeue switch:
134 135 * IP_SQUEUE_ENTER_NODRAIN: SQ_NODRAIN
135 136 * IP_SQUEUE_ENTER: SQ_PROCESS
136 137 * IP_SQUEUE_FILL: SQ_FILL
137 138 */
138 139 int ip_squeue_enter = IP_SQUEUE_ENTER; /* Setable in /etc/system */
139 140
140 141 int ip_squeue_flag;
141 142
142 143 /*
143 144 * Setable in /etc/system
144 145 */
145 146 int ip_poll_normal_ms = 100;
146 147 int ip_poll_normal_ticks = 0;
147 148 int ip_modclose_ackwait_ms = 3000;
148 149
149 150 /*
150 151 * It would be nice to have these present only in DEBUG systems, but the
151 152 * current design of the global symbol checking logic requires them to be
152 153 * unconditionally present.
153 154 */
154 155 uint_t ip_thread_data; /* TSD key for debug support */
155 156 krwlock_t ip_thread_rwlock;
156 157 list_t ip_thread_list;
157 158
158 159 /*
159 160 * Structure to represent a linked list of msgblks. Used by ip_snmp_ functions.
160 161 */
161 162
162 163 struct listptr_s {
163 164 mblk_t *lp_head; /* pointer to the head of the list */
164 165 mblk_t *lp_tail; /* pointer to the tail of the list */
165 166 };
166 167
167 168 typedef struct listptr_s listptr_t;
168 169
169 170 /*
170 171 * This is used by ip_snmp_get_mib2_ip_route_media and
171 172 * ip_snmp_get_mib2_ip6_route_media to carry the lists of return data.
172 173 */
173 174 typedef struct iproutedata_s {
174 175 uint_t ird_idx;
175 176 uint_t ird_flags; /* see below */
176 177 listptr_t ird_route; /* ipRouteEntryTable */
177 178 listptr_t ird_netmedia; /* ipNetToMediaEntryTable */
178 179 listptr_t ird_attrs; /* ipRouteAttributeTable */
179 180 } iproutedata_t;
180 181
181 182 /* Include ire_testhidden and IRE_IF_CLONE routes */
182 183 #define IRD_REPORT_ALL 0x01
183 184
184 185 /*
185 186 * Cluster specific hooks. These should be NULL when booted as a non-cluster
186 187 */
187 188
188 189 /*
189 190 * Hook functions to enable cluster networking
190 191 * On non-clustered systems these vectors must always be NULL.
191 192 *
192 193 * Hook function to Check ip specified ip address is a shared ip address
193 194 * in the cluster
194 195 *
195 196 */
196 197 int (*cl_inet_isclusterwide)(netstackid_t stack_id, uint8_t protocol,
197 198 sa_family_t addr_family, uint8_t *laddrp, void *args) = NULL;
198 199
199 200 /*
200 201 * Hook function to generate cluster wide ip fragment identifier
201 202 */
202 203 uint32_t (*cl_inet_ipident)(netstackid_t stack_id, uint8_t protocol,
203 204 sa_family_t addr_family, uint8_t *laddrp, uint8_t *faddrp,
204 205 void *args) = NULL;
205 206
206 207 /*
207 208 * Hook function to generate cluster wide SPI.
208 209 */
209 210 void (*cl_inet_getspi)(netstackid_t, uint8_t, uint8_t *, size_t,
210 211 void *) = NULL;
211 212
212 213 /*
213 214 * Hook function to verify if the SPI is already utlized.
214 215 */
215 216
216 217 int (*cl_inet_checkspi)(netstackid_t, uint8_t, uint32_t, void *) = NULL;
217 218
218 219 /*
219 220 * Hook function to delete the SPI from the cluster wide repository.
220 221 */
221 222
222 223 void (*cl_inet_deletespi)(netstackid_t, uint8_t, uint32_t, void *) = NULL;
223 224
224 225 /*
225 226 * Hook function to inform the cluster when packet received on an IDLE SA
226 227 */
227 228
228 229 void (*cl_inet_idlesa)(netstackid_t, uint8_t, uint32_t, sa_family_t,
229 230 in6_addr_t, in6_addr_t, void *) = NULL;
230 231
231 232 /*
232 233 * Synchronization notes:
233 234 *
234 235 * IP is a fully D_MP STREAMS module/driver. Thus it does not depend on any
235 236 * MT level protection given by STREAMS. IP uses a combination of its own
236 237 * internal serialization mechanism and standard Solaris locking techniques.
237 238 * The internal serialization is per phyint. This is used to serialize
238 239 * plumbing operations, IPMP operations, most set ioctls, etc.
239 240 *
240 241 * Plumbing is a long sequence of operations involving message
241 242 * exchanges between IP, ARP and device drivers. Many set ioctls are typically
242 243 * involved in plumbing operations. A natural model is to serialize these
243 244 * ioctls one per ill. For example plumbing of hme0 and qfe0 can go on in
244 245 * parallel without any interference. But various set ioctls on hme0 are best
245 246 * serialized, along with IPMP operations and processing of DLPI control
246 247 * messages received from drivers on a per phyint basis. This serialization is
247 248 * provided by the ipsq_t and primitives operating on this. Details can
248 249 * be found in ip_if.c above the core primitives operating on ipsq_t.
249 250 *
250 251 * Lookups of an ipif or ill by a thread return a refheld ipif / ill.
251 252 * Simiarly lookup of an ire by a thread also returns a refheld ire.
252 253 * In addition ipif's and ill's referenced by the ire are also indirectly
253 254 * refheld. Thus no ipif or ill can vanish as long as an ipif is refheld
254 255 * directly or indirectly. For example an SIOCSLIFADDR ioctl that changes the
255 256 * address of an ipif has to go through the ipsq_t. This ensures that only
256 257 * one such exclusive operation proceeds at any time on the ipif. It then
257 258 * waits for all refcnts
258 259 * associated with this ipif to come down to zero. The address is changed
259 260 * only after the ipif has been quiesced. Then the ipif is brought up again.
260 261 * More details are described above the comment in ip_sioctl_flags.
261 262 *
262 263 * Packet processing is based mostly on IREs and are fully multi-threaded
263 264 * using standard Solaris MT techniques.
264 265 *
265 266 * There are explicit locks in IP to handle:
266 267 * - The ip_g_head list maintained by mi_open_link() and friends.
267 268 *
268 269 * - The reassembly data structures (one lock per hash bucket)
269 270 *
270 271 * - conn_lock is meant to protect conn_t fields. The fields actually
271 272 * protected by conn_lock are documented in the conn_t definition.
272 273 *
273 274 * - ire_lock to protect some of the fields of the ire, IRE tables
274 275 * (one lock per hash bucket). Refer to ip_ire.c for details.
275 276 *
276 277 * - ndp_g_lock and ncec_lock for protecting NCEs.
277 278 *
278 279 * - ill_lock protects fields of the ill and ipif. Details in ip.h
279 280 *
280 281 * - ill_g_lock: This is a global reader/writer lock. Protects the following
281 282 * * The AVL tree based global multi list of all ills.
282 283 * * The linked list of all ipifs of an ill
283 284 * * The <ipsq-xop> mapping
284 285 * * <ill-phyint> association
285 286 * Insertion/deletion of an ill in the system, insertion/deletion of an ipif
286 287 * into an ill, changing the <ipsq-xop> mapping of an ill, changing the
287 288 * <ill-phyint> assoc of an ill will all have to hold the ill_g_lock as
288 289 * writer for the actual duration of the insertion/deletion/change.
289 290 *
290 291 * - ill_lock: This is a per ill mutex.
291 292 * It protects some members of the ill_t struct; see ip.h for details.
292 293 * It also protects the <ill-phyint> assoc.
293 294 * It also protects the list of ipifs hanging off the ill.
294 295 *
295 296 * - ipsq_lock: This is a per ipsq_t mutex lock.
296 297 * This protects some members of the ipsq_t struct; see ip.h for details.
297 298 * It also protects the <ipsq-ipxop> mapping
298 299 *
299 300 * - ipx_lock: This is a per ipxop_t mutex lock.
300 301 * This protects some members of the ipxop_t struct; see ip.h for details.
301 302 *
302 303 * - phyint_lock: This is a per phyint mutex lock. Protects just the
303 304 * phyint_flags
304 305 *
305 306 * - ip_addr_avail_lock: This is used to ensure the uniqueness of IP addresses.
306 307 * This lock is held in ipif_up_done and the ipif is marked IPIF_UP and the
307 308 * uniqueness check also done atomically.
308 309 *
309 310 * - ill_g_usesrc_lock: This readers/writer lock protects the usesrc
310 311 * group list linked by ill_usesrc_grp_next. It also protects the
311 312 * ill_usesrc_ifindex field. It is taken as a writer when a member of the
312 313 * group is being added or deleted. This lock is taken as a reader when
313 314 * walking the list/group(eg: to get the number of members in a usesrc group).
314 315 * Note, it is only necessary to take this lock if the ill_usesrc_grp_next
315 316 * field is changing state i.e from NULL to non-NULL or vice-versa. For
316 317 * example, it is not necessary to take this lock in the initial portion
317 318 * of ip_sioctl_slifusesrc or at all in ip_sioctl_flags since these
318 319 * operations are executed exclusively and that ensures that the "usesrc
319 320 * group state" cannot change. The "usesrc group state" change can happen
320 321 * only in the latter part of ip_sioctl_slifusesrc and in ill_delete.
321 322 *
322 323 * Changing <ill-phyint>, <ipsq-xop> assocications:
323 324 *
324 325 * To change the <ill-phyint> association, the ill_g_lock must be held
325 326 * as writer, and the ill_locks of both the v4 and v6 instance of the ill
326 327 * must be held.
327 328 *
328 329 * To change the <ipsq-xop> association, the ill_g_lock must be held as
329 330 * writer, the ipsq_lock must be held, and one must be writer on the ipsq.
330 331 * This is only done when ills are added or removed from IPMP groups.
331 332 *
332 333 * To add or delete an ipif from the list of ipifs hanging off the ill,
333 334 * ill_g_lock (writer) and ill_lock must be held and the thread must be
334 335 * a writer on the associated ipsq.
335 336 *
336 337 * To add or delete an ill to the system, the ill_g_lock must be held as
337 338 * writer and the thread must be a writer on the associated ipsq.
338 339 *
339 340 * To add or delete an ilm to an ill, the ill_lock must be held and the thread
340 341 * must be a writer on the associated ipsq.
341 342 *
342 343 * Lock hierarchy
343 344 *
344 345 * Some lock hierarchy scenarios are listed below.
345 346 *
346 347 * ill_g_lock -> conn_lock -> ill_lock -> ipsq_lock -> ipx_lock
347 348 * ill_g_lock -> ill_lock(s) -> phyint_lock
348 349 * ill_g_lock -> ndp_g_lock -> ill_lock -> ncec_lock
349 350 * ill_g_lock -> ip_addr_avail_lock
350 351 * conn_lock -> irb_lock -> ill_lock -> ire_lock
351 352 * ill_g_lock -> ip_g_nd_lock
352 353 * ill_g_lock -> ips_ipmp_lock -> ill_lock -> nce_lock
353 354 * ill_g_lock -> ndp_g_lock -> ill_lock -> ncec_lock -> nce_lock
354 355 * arl_lock -> ill_lock
355 356 * ips_ire_dep_lock -> irb_lock
356 357 *
357 358 * When more than 1 ill lock is needed to be held, all ill lock addresses
358 359 * are sorted on address and locked starting from highest addressed lock
359 360 * downward.
360 361 *
361 362 * Multicast scenarios
362 363 * ips_ill_g_lock -> ill_mcast_lock
363 364 * conn_ilg_lock -> ips_ill_g_lock -> ill_lock
364 365 * ill_mcast_serializer -> ill_mcast_lock -> ips_ipmp_lock -> ill_lock
365 366 * ill_mcast_serializer -> ill_mcast_lock -> connf_lock -> conn_lock
366 367 * ill_mcast_serializer -> ill_mcast_lock -> conn_ilg_lock
367 368 * ill_mcast_serializer -> ill_mcast_lock -> ips_igmp_timer_lock
368 369 *
369 370 * IPsec scenarios
370 371 *
371 372 * ipsa_lock -> ill_g_lock -> ill_lock
372 373 * ill_g_usesrc_lock -> ill_g_lock -> ill_lock
373 374 *
374 375 * Trusted Solaris scenarios
375 376 *
376 377 * igsa_lock -> gcgrp_rwlock -> gcgrp_lock
377 378 * igsa_lock -> gcdb_lock
378 379 * gcgrp_rwlock -> ire_lock
379 380 * gcgrp_rwlock -> gcdb_lock
380 381 *
381 382 * squeue(sq_lock), flow related (ft_lock, fe_lock) locking
382 383 *
383 384 * cpu_lock --> ill_lock --> sqset_lock --> sq_lock
384 385 * sq_lock -> conn_lock -> QLOCK(q)
385 386 * ill_lock -> ft_lock -> fe_lock
386 387 *
387 388 * Routing/forwarding table locking notes:
388 389 *
389 390 * Lock acquisition order: Radix tree lock, irb_lock.
390 391 * Requirements:
391 392 * i. Walker must not hold any locks during the walker callback.
392 393 * ii Walker must not see a truncated tree during the walk because of any node
393 394 * deletion.
394 395 * iii Existing code assumes ire_bucket is valid if it is non-null and is used
395 396 * in many places in the code to walk the irb list. Thus even if all the
396 397 * ires in a bucket have been deleted, we still can't free the radix node
397 398 * until the ires have actually been inactive'd (freed).
398 399 *
399 400 * Tree traversal - Need to hold the global tree lock in read mode.
400 401 * Before dropping the global tree lock, need to either increment the ire_refcnt
401 402 * to ensure that the radix node can't be deleted.
402 403 *
403 404 * Tree add - Need to hold the global tree lock in write mode to add a
404 405 * radix node. To prevent the node from being deleted, increment the
405 406 * irb_refcnt, after the node is added to the tree. The ire itself is
406 407 * added later while holding the irb_lock, but not the tree lock.
407 408 *
408 409 * Tree delete - Need to hold the global tree lock and irb_lock in write mode.
409 410 * All associated ires must be inactive (i.e. freed), and irb_refcnt
410 411 * must be zero.
411 412 *
412 413 * Walker - Increment irb_refcnt before calling the walker callback. Hold the
413 414 * global tree lock (read mode) for traversal.
414 415 *
415 416 * IRE dependencies - In some cases we hold ips_ire_dep_lock across ire_refrele
416 417 * hence we will acquire irb_lock while holding ips_ire_dep_lock.
417 418 *
418 419 * IPsec notes :
419 420 *
420 421 * IP interacts with the IPsec code (AH/ESP) by storing IPsec attributes
421 422 * in the ip_xmit_attr_t ip_recv_attr_t. For outbound datagrams, the
422 423 * ip_xmit_attr_t has the
423 424 * information used by the IPsec code for applying the right level of
424 425 * protection. The information initialized by IP in the ip_xmit_attr_t
425 426 * is determined by the per-socket policy or global policy in the system.
426 427 * For inbound datagrams, the ip_recv_attr_t
427 428 * starts out with nothing in it. It gets filled
428 429 * with the right information if it goes through the AH/ESP code, which
429 430 * happens if the incoming packet is secure. The information initialized
430 431 * by AH/ESP, is later used by IP (during fanouts to ULP) to see whether
431 432 * the policy requirements needed by per-socket policy or global policy
432 433 * is met or not.
433 434 *
434 435 * For fully connected sockets i.e dst, src [addr, port] is known,
435 436 * conn_policy_cached is set indicating that policy has been cached.
436 437 * conn_in_enforce_policy may or may not be set depending on whether
437 438 * there is a global policy match or per-socket policy match.
438 439 * Policy inheriting happpens in ip_policy_set once the destination is known.
439 440 * Once the right policy is set on the conn_t, policy cannot change for
440 441 * this socket. This makes life simpler for TCP (UDP ?) where
441 442 * re-transmissions go out with the same policy. For symmetry, policy
442 443 * is cached for fully connected UDP sockets also. Thus if policy is cached,
443 444 * it also implies that policy is latched i.e policy cannot change
444 445 * on these sockets. As we have the right policy on the conn, we don't
445 446 * have to lookup global policy for every outbound and inbound datagram
446 447 * and thus serving as an optimization. Note that a global policy change
447 448 * does not affect fully connected sockets if they have policy. If fully
448 449 * connected sockets did not have any policy associated with it, global
449 450 * policy change may affect them.
450 451 *
451 452 * IP Flow control notes:
452 453 * ---------------------
453 454 * Non-TCP streams are flow controlled by IP. The way this is accomplished
454 455 * differs when ILL_CAPAB_DLD_DIRECT is enabled for that IP instance. When
455 456 * ILL_DIRECT_CAPABLE(ill) is TRUE, IP can do direct function calls into
456 457 * GLDv3. Otherwise packets are sent down to lower layers using STREAMS
457 458 * functions.
458 459 *
459 460 * Per Tx ring udp flow control:
460 461 * This is applicable only when ILL_CAPAB_DLD_DIRECT capability is set in
461 462 * the ill (i.e. ILL_DIRECT_CAPABLE(ill) is true).
462 463 *
463 464 * The underlying link can expose multiple Tx rings to the GLDv3 mac layer.
464 465 * To achieve best performance, outgoing traffic need to be fanned out among
465 466 * these Tx ring. mac_tx() is called (via str_mdata_fastpath_put()) to send
466 467 * traffic out of the NIC and it takes a fanout hint. UDP connections pass
467 468 * the address of connp as fanout hint to mac_tx(). Under flow controlled
468 469 * condition, mac_tx() returns a non-NULL cookie (ip_mac_tx_cookie_t). This
469 470 * cookie points to a specific Tx ring that is blocked. The cookie is used to
470 471 * hash into an idl_tx_list[] entry in idl_tx_list[] array. Each idl_tx_list_t
471 472 * point to drain_lists (idl_t's). These drain list will store the blocked UDP
472 473 * connp's. The drain list is not a single list but a configurable number of
473 474 * lists.
474 475 *
475 476 * The diagram below shows idl_tx_list_t's and their drain_lists. ip_stack_t
476 477 * has an array of idl_tx_list_t. The size of the array is TX_FANOUT_SIZE
477 478 * which is equal to 128. This array in turn contains a pointer to idl_t[],
478 479 * the ip drain list. The idl_t[] array size is MIN(max_ncpus, 8). The drain
479 480 * list will point to the list of connp's that are flow controlled.
480 481 *
481 482 * --------------- ------- ------- -------
482 483 * |->|drain_list[0]|-->|connp|-->|connp|-->|connp|-->
483 484 * | --------------- ------- ------- -------
484 485 * | --------------- ------- ------- -------
485 486 * |->|drain_list[1]|-->|connp|-->|connp|-->|connp|-->
486 487 * ---------------- | --------------- ------- ------- -------
487 488 * |idl_tx_list[0]|->| --------------- ------- ------- -------
488 489 * ---------------- |->|drain_list[2]|-->|connp|-->|connp|-->|connp|-->
489 490 * | --------------- ------- ------- -------
490 491 * . . . . .
491 492 * | --------------- ------- ------- -------
492 493 * |->|drain_list[n]|-->|connp|-->|connp|-->|connp|-->
493 494 * --------------- ------- ------- -------
494 495 * --------------- ------- ------- -------
495 496 * |->|drain_list[0]|-->|connp|-->|connp|-->|connp|-->
496 497 * | --------------- ------- ------- -------
497 498 * | --------------- ------- ------- -------
498 499 * ---------------- |->|drain_list[1]|-->|connp|-->|connp|-->|connp|-->
499 500 * |idl_tx_list[1]|->| --------------- ------- ------- -------
500 501 * ---------------- | . . . .
501 502 * | --------------- ------- ------- -------
502 503 * |->|drain_list[n]|-->|connp|-->|connp|-->|connp|-->
503 504 * --------------- ------- ------- -------
504 505 * .....
505 506 * ----------------
506 507 * |idl_tx_list[n]|-> ...
507 508 * ----------------
508 509 *
509 510 * When mac_tx() returns a cookie, the cookie is hashed into an index into
510 511 * ips_idl_tx_list[], and conn_drain_insert() is called with the idl_tx_list
511 512 * to insert the conn onto. conn_drain_insert() asserts flow control for the
512 513 * sockets via su_txq_full() (non-STREAMS) or QFULL on conn_wq (STREAMS).
513 514 * Further, conn_blocked is set to indicate that the conn is blocked.
514 515 *
515 516 * GLDv3 calls ill_flow_enable() when flow control is relieved. The cookie
516 517 * passed in the call to ill_flow_enable() identifies the blocked Tx ring and
517 518 * is again hashed to locate the appropriate idl_tx_list, which is then
518 519 * drained via conn_walk_drain(). conn_walk_drain() goes through each conn in
519 520 * the drain list and calls conn_drain_remove() to clear flow control (via
520 521 * calling su_txq_full() or clearing QFULL), and remove the conn from the
521 522 * drain list.
522 523 *
523 524 * Note that the drain list is not a single list but a (configurable) array of
524 525 * lists (8 elements by default). Synchronization between drain insertion and
525 526 * flow control wakeup is handled by using idl_txl->txl_lock, and only
526 527 * conn_drain_insert() and conn_drain_remove() manipulate the drain list.
527 528 *
528 529 * Flow control via STREAMS is used when ILL_DIRECT_CAPABLE() returns FALSE.
529 530 * On the send side, if the packet cannot be sent down to the driver by IP
530 531 * (canput() fails), ip_xmit() drops the packet and returns EWOULDBLOCK to the
531 532 * caller, who may then invoke ixa_check_drain_insert() to insert the conn on
532 533 * the 0'th drain list. When ip_wsrv() runs on the ill_wq because flow
533 534 * control has been relieved, the blocked conns in the 0'th drain list are
534 535 * drained as in the non-STREAMS case.
535 536 *
536 537 * In both the STREAMS and non-STREAMS cases, the sockfs upcall to set QFULL
537 538 * is done when the conn is inserted into the drain list (conn_drain_insert())
538 539 * and cleared when the conn is removed from the it (conn_drain_remove()).
539 540 *
540 541 * IPQOS notes:
541 542 *
542 543 * IPQoS Policies are applied to packets using IPPF (IP Policy framework)
543 544 * and IPQoS modules. IPPF includes hooks in IP at different control points
544 545 * (callout positions) which direct packets to IPQoS modules for policy
545 546 * processing. Policies, if present, are global.
546 547 *
547 548 * The callout positions are located in the following paths:
548 549 * o local_in (packets destined for this host)
549 550 * o local_out (packets orginating from this host )
550 551 * o fwd_in (packets forwarded by this m/c - inbound)
551 552 * o fwd_out (packets forwarded by this m/c - outbound)
552 553 * Hooks at these callout points can be enabled/disabled using the ndd variable
553 554 * ip_policy_mask (a bit mask with the 4 LSB indicating the callout positions).
554 555 * By default all the callout positions are enabled.
555 556 *
556 557 * Outbound (local_out)
557 558 * Hooks are placed in ire_send_wire_v4 and ire_send_wire_v6.
558 559 *
559 560 * Inbound (local_in)
560 561 * Hooks are placed in ip_fanout_v4 and ip_fanout_v6.
561 562 *
562 563 * Forwarding (in and out)
563 564 * Hooks are placed in ire_recv_forward_v4/v6.
564 565 *
565 566 * IP Policy Framework processing (IPPF processing)
566 567 * Policy processing for a packet is initiated by ip_process, which ascertains
567 568 * that the classifier (ipgpc) is loaded and configured, failing which the
568 569 * packet resumes normal processing in IP. If the clasifier is present, the
569 570 * packet is acted upon by one or more IPQoS modules (action instances), per
570 571 * filters configured in ipgpc and resumes normal IP processing thereafter.
571 572 * An action instance can drop a packet in course of its processing.
572 573 *
573 574 * Zones notes:
574 575 *
575 576 * The partitioning rules for networking are as follows:
576 577 * 1) Packets coming from a zone must have a source address belonging to that
577 578 * zone.
578 579 * 2) Packets coming from a zone can only be sent on a physical interface on
579 580 * which the zone has an IP address.
580 581 * 3) Between two zones on the same machine, packet delivery is only allowed if
581 582 * there's a matching route for the destination and zone in the forwarding
582 583 * table.
583 584 * 4) The TCP and UDP port spaces are per-zone; that is, two processes in
584 585 * different zones can bind to the same port with the wildcard address
585 586 * (INADDR_ANY).
586 587 *
587 588 * The granularity of interface partitioning is at the logical interface level.
588 589 * Therefore, every zone has its own IP addresses, and incoming packets can be
589 590 * attributed to a zone unambiguously. A logical interface is placed into a zone
590 591 * using the SIOCSLIFZONE ioctl; this sets the ipif_zoneid field in the ipif_t
591 592 * structure. Rule (1) is implemented by modifying the source address selection
592 593 * algorithm so that the list of eligible addresses is filtered based on the
593 594 * sending process zone.
594 595 *
595 596 * The Internet Routing Entries (IREs) are either exclusive to a zone or shared
596 597 * across all zones, depending on their type. Here is the break-up:
597 598 *
598 599 * IRE type Shared/exclusive
599 600 * -------- ----------------
600 601 * IRE_BROADCAST Exclusive
601 602 * IRE_DEFAULT (default routes) Shared (*)
602 603 * IRE_LOCAL Exclusive (x)
603 604 * IRE_LOOPBACK Exclusive
604 605 * IRE_PREFIX (net routes) Shared (*)
605 606 * IRE_IF_NORESOLVER (interface routes) Exclusive
606 607 * IRE_IF_RESOLVER (interface routes) Exclusive
607 608 * IRE_IF_CLONE (interface routes) Exclusive
608 609 * IRE_HOST (host routes) Shared (*)
609 610 *
610 611 * (*) A zone can only use a default or off-subnet route if the gateway is
611 612 * directly reachable from the zone, that is, if the gateway's address matches
612 613 * one of the zone's logical interfaces.
613 614 *
614 615 * (x) IRE_LOCAL are handled a bit differently.
615 616 * When ip_restrict_interzone_loopback is set (the default),
616 617 * ire_route_recursive restricts loopback using an IRE_LOCAL
617 618 * between zone to the case when L2 would have conceptually looped the packet
618 619 * back, i.e. the loopback which is required since neither Ethernet drivers
619 620 * nor Ethernet hardware loops them back. This is the case when the normal
620 621 * routes (ignoring IREs with different zoneids) would send out the packet on
621 622 * the same ill as the ill with which is IRE_LOCAL is associated.
622 623 *
623 624 * Multiple zones can share a common broadcast address; typically all zones
624 625 * share the 255.255.255.255 address. Incoming as well as locally originated
625 626 * broadcast packets must be dispatched to all the zones on the broadcast
626 627 * network. For directed broadcasts (e.g. 10.16.72.255) this is not trivial
627 628 * since some zones may not be on the 10.16.72/24 network. To handle this, each
628 629 * zone has its own set of IRE_BROADCAST entries; then, broadcast packets are
629 630 * sent to every zone that has an IRE_BROADCAST entry for the destination
630 631 * address on the input ill, see ip_input_broadcast().
631 632 *
632 633 * Applications in different zones can join the same multicast group address.
633 634 * The same logic applies for multicast as for broadcast. ip_input_multicast
634 635 * dispatches packets to all zones that have members on the physical interface.
635 636 */
636 637
637 638 /*
638 639 * Squeue Fanout flags:
639 640 * 0: No fanout.
640 641 * 1: Fanout across all squeues
641 642 */
642 643 boolean_t ip_squeue_fanout = 0;
643 644
644 645 /*
645 646 * Maximum dups allowed per packet.
646 647 */
647 648 uint_t ip_max_frag_dups = 10;
648 649
649 650 static int ip_open(queue_t *q, dev_t *devp, int flag, int sflag,
650 651 cred_t *credp, boolean_t isv6);
651 652 static mblk_t *ip_xmit_attach_llhdr(mblk_t *, nce_t *);
652 653
653 654 static boolean_t icmp_inbound_verify_v4(mblk_t *, icmph_t *, ip_recv_attr_t *);
654 655 static void icmp_inbound_too_big_v4(icmph_t *, ip_recv_attr_t *);
655 656 static void icmp_inbound_error_fanout_v4(mblk_t *, icmph_t *,
656 657 ip_recv_attr_t *);
657 658 static void icmp_options_update(ipha_t *);
658 659 static void icmp_param_problem(mblk_t *, uint8_t, ip_recv_attr_t *);
659 660 static void icmp_pkt(mblk_t *, void *, size_t, ip_recv_attr_t *);
660 661 static mblk_t *icmp_pkt_err_ok(mblk_t *, ip_recv_attr_t *);
661 662 static void icmp_redirect_v4(mblk_t *mp, ipha_t *, icmph_t *,
662 663 ip_recv_attr_t *);
663 664 static void icmp_send_redirect(mblk_t *, ipaddr_t, ip_recv_attr_t *);
664 665 static void icmp_send_reply_v4(mblk_t *, ipha_t *, icmph_t *,
665 666 ip_recv_attr_t *);
666 667
667 668 mblk_t *ip_dlpi_alloc(size_t, t_uscalar_t);
668 669 char *ip_dot_addr(ipaddr_t, char *);
669 670 mblk_t *ip_carve_mp(mblk_t **, ssize_t);
670 671 static char *ip_dot_saddr(uchar_t *, char *);
671 672 static int ip_lrput(queue_t *, mblk_t *);
672 673 ipaddr_t ip_net_mask(ipaddr_t);
673 674 char *ip_nv_lookup(nv_t *, int);
674 675 int ip_rput(queue_t *, mblk_t *);
675 676 static void ip_rput_dlpi_writer(ipsq_t *dummy_sq, queue_t *q, mblk_t *mp,
676 677 void *dummy_arg);
677 678 int ip_snmp_get(queue_t *, mblk_t *, int, boolean_t);
678 679 static mblk_t *ip_snmp_get_mib2_ip(queue_t *, mblk_t *,
679 680 mib2_ipIfStatsEntry_t *, ip_stack_t *, boolean_t);
680 681 static mblk_t *ip_snmp_get_mib2_ip_traffic_stats(queue_t *, mblk_t *,
681 682 ip_stack_t *, boolean_t);
682 683 static mblk_t *ip_snmp_get_mib2_ip6(queue_t *, mblk_t *, ip_stack_t *,
683 684 boolean_t);
684 685 static mblk_t *ip_snmp_get_mib2_icmp(queue_t *, mblk_t *, ip_stack_t *ipst);
685 686 static mblk_t *ip_snmp_get_mib2_icmp6(queue_t *, mblk_t *, ip_stack_t *ipst);
686 687 static mblk_t *ip_snmp_get_mib2_igmp(queue_t *, mblk_t *, ip_stack_t *ipst);
687 688 static mblk_t *ip_snmp_get_mib2_multi(queue_t *, mblk_t *, ip_stack_t *ipst);
688 689 static mblk_t *ip_snmp_get_mib2_ip_addr(queue_t *, mblk_t *,
689 690 ip_stack_t *ipst, boolean_t);
690 691 static mblk_t *ip_snmp_get_mib2_ip6_addr(queue_t *, mblk_t *,
691 692 ip_stack_t *ipst, boolean_t);
692 693 static mblk_t *ip_snmp_get_mib2_ip_group_src(queue_t *, mblk_t *,
693 694 ip_stack_t *ipst);
694 695 static mblk_t *ip_snmp_get_mib2_ip6_group_src(queue_t *, mblk_t *,
695 696 ip_stack_t *ipst);
696 697 static mblk_t *ip_snmp_get_mib2_ip_group_mem(queue_t *, mblk_t *,
697 698 ip_stack_t *ipst);
698 699 static mblk_t *ip_snmp_get_mib2_ip6_group_mem(queue_t *, mblk_t *,
699 700 ip_stack_t *ipst);
700 701 static mblk_t *ip_snmp_get_mib2_virt_multi(queue_t *, mblk_t *,
701 702 ip_stack_t *ipst);
702 703 static mblk_t *ip_snmp_get_mib2_multi_rtable(queue_t *, mblk_t *,
703 704 ip_stack_t *ipst);
704 705 static mblk_t *ip_snmp_get_mib2_ip_route_media(queue_t *, mblk_t *, int,
705 706 ip_stack_t *ipst);
706 707 static mblk_t *ip_snmp_get_mib2_ip6_route_media(queue_t *, mblk_t *, int,
707 708 ip_stack_t *ipst);
708 709 static void ip_snmp_get2_v4(ire_t *, iproutedata_t *);
709 710 static void ip_snmp_get2_v6_route(ire_t *, iproutedata_t *);
710 711 static void ip_snmp_get2_v4_media(ncec_t *, void *);
711 712 static void ip_snmp_get2_v6_media(ncec_t *, void *);
712 713 int ip_snmp_set(queue_t *, int, int, uchar_t *, int);
713 714
714 715 static mblk_t *ip_fragment_copyhdr(uchar_t *, int, int, ip_stack_t *,
715 716 mblk_t *);
716 717
717 718 static void conn_drain_init(ip_stack_t *);
718 719 static void conn_drain_fini(ip_stack_t *);
719 720 static void conn_drain(conn_t *connp, boolean_t closing);
720 721
721 722 static void conn_walk_drain(ip_stack_t *, idl_tx_list_t *);
722 723 static void conn_walk_sctp(pfv_t, void *, zoneid_t, netstack_t *);
723 724
724 725 static void *ip_stack_init(netstackid_t stackid, netstack_t *ns);
725 726 static void ip_stack_shutdown(netstackid_t stackid, void *arg);
726 727 static void ip_stack_fini(netstackid_t stackid, void *arg);
727 728
728 729 static int ip_multirt_apply_membership(int (*fn)(conn_t *, boolean_t,
729 730 const in6_addr_t *, ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *),
730 731 ire_t *, conn_t *, boolean_t, const in6_addr_t *, mcast_record_t,
731 732 const in6_addr_t *);
732 733
733 734 static int ip_squeue_switch(int);
734 735
735 736 static void *ip_kstat_init(netstackid_t, ip_stack_t *);
736 737 static void ip_kstat_fini(netstackid_t, kstat_t *);
737 738 static int ip_kstat_update(kstat_t *kp, int rw);
738 739 static void *icmp_kstat_init(netstackid_t);
739 740 static void icmp_kstat_fini(netstackid_t, kstat_t *);
740 741 static int icmp_kstat_update(kstat_t *kp, int rw);
741 742 static void *ip_kstat2_init(netstackid_t, ip_stat_t *);
742 743 static void ip_kstat2_fini(netstackid_t, kstat_t *);
743 744
744 745 static void ipobs_init(ip_stack_t *);
745 746 static void ipobs_fini(ip_stack_t *);
746 747
747 748 static int ip_tp_cpu_update(cpu_setup_t, int, void *);
748 749
749 750 ipaddr_t ip_g_all_ones = IP_HOST_MASK;
750 751
751 752 static long ip_rput_pullups;
752 753 int dohwcksum = 1; /* use h/w cksum if supported by the hardware */
753 754
754 755 vmem_t *ip_minor_arena_sa; /* for minor nos. from INET_MIN_DEV+2 thru 2^^18-1 */
755 756 vmem_t *ip_minor_arena_la; /* for minor nos. from 2^^18 thru 2^^32-1 */
756 757
757 758 int ip_debug;
758 759
759 760 /*
760 761 * Multirouting/CGTP stuff
761 762 */
762 763 int ip_cgtp_filter_rev = CGTP_FILTER_REV; /* CGTP hooks version */
763 764
764 765 /*
765 766 * IP tunables related declarations. Definitions are in ip_tunables.c
766 767 */
767 768 extern mod_prop_info_t ip_propinfo_tbl[];
768 769 extern int ip_propinfo_count;
769 770
770 771 /*
771 772 * Table of IP ioctls encoding the various properties of the ioctl and
772 773 * indexed based on the last byte of the ioctl command. Occasionally there
773 774 * is a clash, and there is more than 1 ioctl with the same last byte.
774 775 * In such a case 1 ioctl is encoded in the ndx table and the remaining
775 776 * ioctls are encoded in the misc table. An entry in the ndx table is
776 777 * retrieved by indexing on the last byte of the ioctl command and comparing
777 778 * the ioctl command with the value in the ndx table. In the event of a
778 779 * mismatch the misc table is then searched sequentially for the desired
779 780 * ioctl command.
780 781 *
781 782 * Entry: <command> <copyin_size> <flags> <cmd_type> <function> <restart_func>
782 783 */
783 784 ip_ioctl_cmd_t ip_ndx_ioctl_table[] = {
784 785 /* 000 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
785 786 /* 001 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
786 787 /* 002 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
787 788 /* 003 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
788 789 /* 004 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
789 790 /* 005 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
790 791 /* 006 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
791 792 /* 007 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
792 793 /* 008 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
793 794 /* 009 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
794 795
795 796 /* 010 */ { SIOCADDRT, sizeof (struct rtentry), IPI_PRIV,
796 797 MISC_CMD, ip_siocaddrt, NULL },
797 798 /* 011 */ { SIOCDELRT, sizeof (struct rtentry), IPI_PRIV,
798 799 MISC_CMD, ip_siocdelrt, NULL },
799 800
800 801 /* 012 */ { SIOCSIFADDR, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
801 802 IF_CMD, ip_sioctl_addr, ip_sioctl_addr_restart },
802 803 /* 013 */ { SIOCGIFADDR, sizeof (struct ifreq), IPI_GET_CMD,
803 804 IF_CMD, ip_sioctl_get_addr, NULL },
804 805
805 806 /* 014 */ { SIOCSIFDSTADDR, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
806 807 IF_CMD, ip_sioctl_dstaddr, ip_sioctl_dstaddr_restart },
807 808 /* 015 */ { SIOCGIFDSTADDR, sizeof (struct ifreq),
808 809 IPI_GET_CMD, IF_CMD, ip_sioctl_get_dstaddr, NULL },
809 810
810 811 /* 016 */ { SIOCSIFFLAGS, sizeof (struct ifreq),
811 812 IPI_PRIV | IPI_WR,
812 813 IF_CMD, ip_sioctl_flags, ip_sioctl_flags_restart },
813 814 /* 017 */ { SIOCGIFFLAGS, sizeof (struct ifreq),
814 815 IPI_MODOK | IPI_GET_CMD,
815 816 IF_CMD, ip_sioctl_get_flags, NULL },
816 817
817 818 /* 018 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
818 819 /* 019 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
819 820
820 821 /* copyin size cannot be coded for SIOCGIFCONF */
821 822 /* 020 */ { O_SIOCGIFCONF, 0, IPI_GET_CMD,
822 823 MISC_CMD, ip_sioctl_get_ifconf, NULL },
823 824
824 825 /* 021 */ { SIOCSIFMTU, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
825 826 IF_CMD, ip_sioctl_mtu, NULL },
826 827 /* 022 */ { SIOCGIFMTU, sizeof (struct ifreq), IPI_GET_CMD,
827 828 IF_CMD, ip_sioctl_get_mtu, NULL },
828 829 /* 023 */ { SIOCGIFBRDADDR, sizeof (struct ifreq),
829 830 IPI_GET_CMD, IF_CMD, ip_sioctl_get_brdaddr, NULL },
830 831 /* 024 */ { SIOCSIFBRDADDR, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
831 832 IF_CMD, ip_sioctl_brdaddr, NULL },
832 833 /* 025 */ { SIOCGIFNETMASK, sizeof (struct ifreq),
833 834 IPI_GET_CMD, IF_CMD, ip_sioctl_get_netmask, NULL },
834 835 /* 026 */ { SIOCSIFNETMASK, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
835 836 IF_CMD, ip_sioctl_netmask, ip_sioctl_netmask_restart },
836 837 /* 027 */ { SIOCGIFMETRIC, sizeof (struct ifreq),
837 838 IPI_GET_CMD, IF_CMD, ip_sioctl_get_metric, NULL },
838 839 /* 028 */ { SIOCSIFMETRIC, sizeof (struct ifreq), IPI_PRIV,
839 840 IF_CMD, ip_sioctl_metric, NULL },
840 841 /* 029 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
841 842
842 843 /* See 166-168 below for extended SIOC*XARP ioctls */
843 844 /* 030 */ { SIOCSARP, sizeof (struct arpreq), IPI_PRIV | IPI_WR,
844 845 ARP_CMD, ip_sioctl_arp, NULL },
845 846 /* 031 */ { SIOCGARP, sizeof (struct arpreq), IPI_GET_CMD,
846 847 ARP_CMD, ip_sioctl_arp, NULL },
847 848 /* 032 */ { SIOCDARP, sizeof (struct arpreq), IPI_PRIV | IPI_WR,
848 849 ARP_CMD, ip_sioctl_arp, NULL },
849 850
850 851 /* 033 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
851 852 /* 034 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
852 853 /* 035 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
853 854 /* 036 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
854 855 /* 037 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
855 856 /* 038 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
856 857 /* 039 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
857 858 /* 040 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
858 859 /* 041 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
859 860 /* 042 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
860 861 /* 043 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
861 862 /* 044 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
862 863 /* 045 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
863 864 /* 046 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
864 865 /* 047 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
865 866 /* 048 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
866 867 /* 049 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
867 868 /* 050 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
868 869 /* 051 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
869 870 /* 052 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
870 871 /* 053 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
871 872
872 873 /* 054 */ { IF_UNITSEL, sizeof (int), IPI_PRIV | IPI_WR | IPI_MODOK,
873 874 MISC_CMD, if_unitsel, if_unitsel_restart },
874 875
875 876 /* 055 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
876 877 /* 056 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
877 878 /* 057 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
878 879 /* 058 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
879 880 /* 059 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
880 881 /* 060 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
881 882 /* 061 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
882 883 /* 062 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
883 884 /* 063 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
884 885 /* 064 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
885 886 /* 065 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
886 887 /* 066 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
887 888 /* 067 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
888 889 /* 068 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
889 890 /* 069 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
890 891 /* 070 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
891 892 /* 071 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
892 893 /* 072 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
893 894
894 895 /* 073 */ { SIOCSIFNAME, sizeof (struct ifreq),
895 896 IPI_PRIV | IPI_WR | IPI_MODOK,
896 897 IF_CMD, ip_sioctl_sifname, NULL },
897 898
898 899 /* 074 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
899 900 /* 075 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
900 901 /* 076 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
901 902 /* 077 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
902 903 /* 078 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
903 904 /* 079 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
904 905 /* 080 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
905 906 /* 081 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
906 907 /* 082 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
907 908 /* 083 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
908 909 /* 084 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
909 910 /* 085 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
910 911 /* 086 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
911 912
912 913 /* 087 */ { SIOCGIFNUM, sizeof (int), IPI_GET_CMD,
913 914 MISC_CMD, ip_sioctl_get_ifnum, NULL },
914 915 /* 088 */ { SIOCGIFMUXID, sizeof (struct ifreq), IPI_GET_CMD,
915 916 IF_CMD, ip_sioctl_get_muxid, NULL },
916 917 /* 089 */ { SIOCSIFMUXID, sizeof (struct ifreq),
917 918 IPI_PRIV | IPI_WR, IF_CMD, ip_sioctl_muxid, NULL },
918 919
919 920 /* Both if and lif variants share same func */
920 921 /* 090 */ { SIOCGIFINDEX, sizeof (struct ifreq), IPI_GET_CMD,
921 922 IF_CMD, ip_sioctl_get_lifindex, NULL },
922 923 /* Both if and lif variants share same func */
923 924 /* 091 */ { SIOCSIFINDEX, sizeof (struct ifreq),
924 925 IPI_PRIV | IPI_WR, IF_CMD, ip_sioctl_slifindex, NULL },
925 926
926 927 /* copyin size cannot be coded for SIOCGIFCONF */
927 928 /* 092 */ { SIOCGIFCONF, 0, IPI_GET_CMD,
928 929 MISC_CMD, ip_sioctl_get_ifconf, NULL },
929 930 /* 093 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
930 931 /* 094 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
931 932 /* 095 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
932 933 /* 096 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
933 934 /* 097 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
934 935 /* 098 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
935 936 /* 099 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
936 937 /* 100 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
937 938 /* 101 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
938 939 /* 102 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
939 940 /* 103 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
940 941 /* 104 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
941 942 /* 105 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
942 943 /* 106 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
943 944 /* 107 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
944 945 /* 108 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
945 946 /* 109 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
946 947
947 948 /* 110 */ { SIOCLIFREMOVEIF, sizeof (struct lifreq),
948 949 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_removeif,
949 950 ip_sioctl_removeif_restart },
950 951 /* 111 */ { SIOCLIFADDIF, sizeof (struct lifreq),
951 952 IPI_GET_CMD | IPI_PRIV | IPI_WR,
952 953 LIF_CMD, ip_sioctl_addif, NULL },
953 954 #define SIOCLIFADDR_NDX 112
954 955 /* 112 */ { SIOCSLIFADDR, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
955 956 LIF_CMD, ip_sioctl_addr, ip_sioctl_addr_restart },
956 957 /* 113 */ { SIOCGLIFADDR, sizeof (struct lifreq),
957 958 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_addr, NULL },
958 959 /* 114 */ { SIOCSLIFDSTADDR, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
959 960 LIF_CMD, ip_sioctl_dstaddr, ip_sioctl_dstaddr_restart },
960 961 /* 115 */ { SIOCGLIFDSTADDR, sizeof (struct lifreq),
961 962 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_dstaddr, NULL },
962 963 /* 116 */ { SIOCSLIFFLAGS, sizeof (struct lifreq),
963 964 IPI_PRIV | IPI_WR,
964 965 LIF_CMD, ip_sioctl_flags, ip_sioctl_flags_restart },
965 966 /* 117 */ { SIOCGLIFFLAGS, sizeof (struct lifreq),
966 967 IPI_GET_CMD | IPI_MODOK,
967 968 LIF_CMD, ip_sioctl_get_flags, NULL },
968 969
969 970 /* 118 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
970 971 /* 119 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
971 972
972 973 /* 120 */ { O_SIOCGLIFCONF, 0, IPI_GET_CMD, MISC_CMD,
973 974 ip_sioctl_get_lifconf, NULL },
974 975 /* 121 */ { SIOCSLIFMTU, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
975 976 LIF_CMD, ip_sioctl_mtu, NULL },
976 977 /* 122 */ { SIOCGLIFMTU, sizeof (struct lifreq), IPI_GET_CMD,
977 978 LIF_CMD, ip_sioctl_get_mtu, NULL },
978 979 /* 123 */ { SIOCGLIFBRDADDR, sizeof (struct lifreq),
979 980 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_brdaddr, NULL },
980 981 /* 124 */ { SIOCSLIFBRDADDR, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
981 982 LIF_CMD, ip_sioctl_brdaddr, NULL },
982 983 /* 125 */ { SIOCGLIFNETMASK, sizeof (struct lifreq),
983 984 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_netmask, NULL },
984 985 /* 126 */ { SIOCSLIFNETMASK, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
985 986 LIF_CMD, ip_sioctl_netmask, ip_sioctl_netmask_restart },
986 987 /* 127 */ { SIOCGLIFMETRIC, sizeof (struct lifreq),
987 988 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_metric, NULL },
988 989 /* 128 */ { SIOCSLIFMETRIC, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
989 990 LIF_CMD, ip_sioctl_metric, NULL },
990 991 /* 129 */ { SIOCSLIFNAME, sizeof (struct lifreq),
991 992 IPI_PRIV | IPI_WR | IPI_MODOK,
992 993 LIF_CMD, ip_sioctl_slifname,
993 994 ip_sioctl_slifname_restart },
994 995
995 996 /* 130 */ { SIOCGLIFNUM, sizeof (struct lifnum), IPI_GET_CMD,
996 997 MISC_CMD, ip_sioctl_get_lifnum, NULL },
997 998 /* 131 */ { SIOCGLIFMUXID, sizeof (struct lifreq),
998 999 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_muxid, NULL },
999 1000 /* 132 */ { SIOCSLIFMUXID, sizeof (struct lifreq),
1000 1001 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_muxid, NULL },
1001 1002 /* 133 */ { SIOCGLIFINDEX, sizeof (struct lifreq),
1002 1003 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_lifindex, 0 },
1003 1004 /* 134 */ { SIOCSLIFINDEX, sizeof (struct lifreq),
1004 1005 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_slifindex, 0 },
1005 1006 /* 135 */ { SIOCSLIFTOKEN, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1006 1007 LIF_CMD, ip_sioctl_token, NULL },
1007 1008 /* 136 */ { SIOCGLIFTOKEN, sizeof (struct lifreq),
1008 1009 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_token, NULL },
1009 1010 /* 137 */ { SIOCSLIFSUBNET, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1010 1011 LIF_CMD, ip_sioctl_subnet, ip_sioctl_subnet_restart },
1011 1012 /* 138 */ { SIOCGLIFSUBNET, sizeof (struct lifreq),
1012 1013 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_subnet, NULL },
1013 1014 /* 139 */ { SIOCSLIFLNKINFO, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1014 1015 LIF_CMD, ip_sioctl_lnkinfo, NULL },
1015 1016
1016 1017 /* 140 */ { SIOCGLIFLNKINFO, sizeof (struct lifreq),
1017 1018 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_lnkinfo, NULL },
1018 1019 /* 141 */ { SIOCLIFDELND, sizeof (struct lifreq), IPI_PRIV,
1019 1020 LIF_CMD, ip_siocdelndp_v6, NULL },
1020 1021 /* 142 */ { SIOCLIFGETND, sizeof (struct lifreq), IPI_GET_CMD,
1021 1022 LIF_CMD, ip_siocqueryndp_v6, NULL },
1022 1023 /* 143 */ { SIOCLIFSETND, sizeof (struct lifreq), IPI_PRIV,
1023 1024 LIF_CMD, ip_siocsetndp_v6, NULL },
1024 1025 /* 144 */ { SIOCTMYADDR, sizeof (struct sioc_addrreq), IPI_GET_CMD,
1025 1026 MISC_CMD, ip_sioctl_tmyaddr, NULL },
1026 1027 /* 145 */ { SIOCTONLINK, sizeof (struct sioc_addrreq), IPI_GET_CMD,
1027 1028 MISC_CMD, ip_sioctl_tonlink, NULL },
1028 1029 /* 146 */ { SIOCTMYSITE, sizeof (struct sioc_addrreq), 0,
1029 1030 MISC_CMD, ip_sioctl_tmysite, NULL },
1030 1031 /* 147 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1031 1032 /* 148 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1032 1033
1033 1034 /* Old *IPSECONFIG ioctls are now deprecated, now see spdsock.c */
1034 1035 /* 149 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1035 1036 /* 150 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1036 1037 /* 151 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1037 1038 /* 152 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1038 1039
1039 1040 /* 153 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1040 1041
1041 1042 /* 154 */ { SIOCGLIFBINDING, sizeof (struct lifreq), IPI_GET_CMD,
1042 1043 LIF_CMD, ip_sioctl_get_binding, NULL },
1043 1044 /* 155 */ { SIOCSLIFGROUPNAME, sizeof (struct lifreq),
1044 1045 IPI_PRIV | IPI_WR,
1045 1046 LIF_CMD, ip_sioctl_groupname, ip_sioctl_groupname },
1046 1047 /* 156 */ { SIOCGLIFGROUPNAME, sizeof (struct lifreq),
1047 1048 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_groupname, NULL },
1048 1049 /* 157 */ { SIOCGLIFGROUPINFO, sizeof (lifgroupinfo_t),
1049 1050 IPI_GET_CMD, MISC_CMD, ip_sioctl_groupinfo, NULL },
1050 1051
1051 1052 /* Leave 158-160 unused; used to be SIOC*IFARP ioctls */
1052 1053 /* 158 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1053 1054 /* 159 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1054 1055 /* 160 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1055 1056
1056 1057 /* 161 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1057 1058
1058 1059 /* These are handled in ip_sioctl_copyin_setup itself */
1059 1060 /* 162 */ { SIOCGIP6ADDRPOLICY, 0, IPI_NULL_BCONT,
1060 1061 MISC_CMD, NULL, NULL },
1061 1062 /* 163 */ { SIOCSIP6ADDRPOLICY, 0, IPI_PRIV | IPI_NULL_BCONT,
1062 1063 MISC_CMD, NULL, NULL },
1063 1064 /* 164 */ { SIOCGDSTINFO, 0, IPI_GET_CMD, MISC_CMD, NULL, NULL },
1064 1065
1065 1066 /* 165 */ { SIOCGLIFCONF, 0, IPI_GET_CMD, MISC_CMD,
1066 1067 ip_sioctl_get_lifconf, NULL },
1067 1068
1068 1069 /* 166 */ { SIOCSXARP, sizeof (struct xarpreq), IPI_PRIV | IPI_WR,
1069 1070 XARP_CMD, ip_sioctl_arp, NULL },
1070 1071 /* 167 */ { SIOCGXARP, sizeof (struct xarpreq), IPI_GET_CMD,
1071 1072 XARP_CMD, ip_sioctl_arp, NULL },
1072 1073 /* 168 */ { SIOCDXARP, sizeof (struct xarpreq), IPI_PRIV | IPI_WR,
1073 1074 XARP_CMD, ip_sioctl_arp, NULL },
1074 1075
1075 1076 /* SIOCPOPSOCKFS is not handled by IP */
1076 1077 /* 169 */ { IPI_DONTCARE /* SIOCPOPSOCKFS */, 0, 0, 0, NULL, NULL },
1077 1078
1078 1079 /* 170 */ { SIOCGLIFZONE, sizeof (struct lifreq),
1079 1080 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_lifzone, NULL },
1080 1081 /* 171 */ { SIOCSLIFZONE, sizeof (struct lifreq),
1081 1082 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_slifzone,
1082 1083 ip_sioctl_slifzone_restart },
1083 1084 /* 172-174 are SCTP ioctls and not handled by IP */
1084 1085 /* 172 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1085 1086 /* 173 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1086 1087 /* 174 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1087 1088 /* 175 */ { SIOCGLIFUSESRC, sizeof (struct lifreq),
1088 1089 IPI_GET_CMD, LIF_CMD,
1089 1090 ip_sioctl_get_lifusesrc, 0 },
1090 1091 /* 176 */ { SIOCSLIFUSESRC, sizeof (struct lifreq),
1091 1092 IPI_PRIV | IPI_WR,
1092 1093 LIF_CMD, ip_sioctl_slifusesrc,
1093 1094 NULL },
1094 1095 /* 177 */ { SIOCGLIFSRCOF, 0, IPI_GET_CMD, MISC_CMD,
1095 1096 ip_sioctl_get_lifsrcof, NULL },
1096 1097 /* 178 */ { SIOCGMSFILTER, sizeof (struct group_filter), IPI_GET_CMD,
1097 1098 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1098 1099 /* 179 */ { SIOCSMSFILTER, sizeof (struct group_filter), 0,
1099 1100 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1100 1101 /* 180 */ { SIOCGIPMSFILTER, sizeof (struct ip_msfilter), IPI_GET_CMD,
1101 1102 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1102 1103 /* 181 */ { SIOCSIPMSFILTER, sizeof (struct ip_msfilter), 0,
1103 1104 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1104 1105 /* 182 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1105 1106 /* SIOCSENABLESDP is handled by SDP */
1106 1107 /* 183 */ { IPI_DONTCARE /* SIOCSENABLESDP */, 0, 0, 0, NULL, NULL },
1107 1108 /* 184 */ { IPI_DONTCARE /* SIOCSQPTR */, 0, 0, 0, NULL, NULL },
1108 1109 /* 185 */ { SIOCGIFHWADDR, sizeof (struct ifreq), IPI_GET_CMD,
1109 1110 IF_CMD, ip_sioctl_get_ifhwaddr, NULL },
1110 1111 /* 186 */ { IPI_DONTCARE /* SIOCGSTAMP */, 0, 0, 0, NULL, NULL },
1111 1112 /* 187 */ { SIOCILB, 0, IPI_PRIV | IPI_GET_CMD, MISC_CMD,
1112 1113 ip_sioctl_ilb_cmd, NULL },
1113 1114 /* 188 */ { SIOCGETPROP, 0, IPI_GET_CMD, 0, NULL, NULL },
1114 1115 /* 189 */ { SIOCSETPROP, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL},
1115 1116 /* 190 */ { SIOCGLIFDADSTATE, sizeof (struct lifreq),
1116 1117 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_dadstate, NULL },
1117 1118 /* 191 */ { SIOCSLIFPREFIX, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1118 1119 LIF_CMD, ip_sioctl_prefix, ip_sioctl_prefix_restart },
1119 1120 /* 192 */ { SIOCGLIFHWADDR, sizeof (struct lifreq), IPI_GET_CMD,
1120 1121 LIF_CMD, ip_sioctl_get_lifhwaddr, NULL }
1121 1122 };
1122 1123
1123 1124 int ip_ndx_ioctl_count = sizeof (ip_ndx_ioctl_table) / sizeof (ip_ioctl_cmd_t);
1124 1125
1125 1126 ip_ioctl_cmd_t ip_misc_ioctl_table[] = {
1126 1127 { I_LINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1127 1128 { I_UNLINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1128 1129 { I_PLINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1129 1130 { I_PUNLINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1130 1131 { ND_GET, 0, 0, 0, NULL, NULL },
1131 1132 { ND_SET, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1132 1133 { IP_IOCTL, 0, 0, 0, NULL, NULL },
1133 1134 { SIOCGETVIFCNT, sizeof (struct sioc_vif_req), IPI_GET_CMD,
1134 1135 MISC_CMD, mrt_ioctl},
1135 1136 { SIOCGETSGCNT, sizeof (struct sioc_sg_req), IPI_GET_CMD,
1136 1137 MISC_CMD, mrt_ioctl},
1137 1138 { SIOCGETLSGCNT, sizeof (struct sioc_lsg_req), IPI_GET_CMD,
1138 1139 MISC_CMD, mrt_ioctl}
1139 1140 };
1140 1141
1141 1142 int ip_misc_ioctl_count =
1142 1143 sizeof (ip_misc_ioctl_table) / sizeof (ip_ioctl_cmd_t);
1143 1144
1144 1145 int conn_drain_nthreads; /* Number of drainers reqd. */
1145 1146 /* Settable in /etc/system */
1146 1147 /* Defined in ip_ire.c */
1147 1148 extern uint32_t ip_ire_max_bucket_cnt, ip6_ire_max_bucket_cnt;
1148 1149 extern uint32_t ip_ire_min_bucket_cnt, ip6_ire_min_bucket_cnt;
1149 1150 extern uint32_t ip_ire_mem_ratio, ip_ire_cpu_ratio;
1150 1151
1151 1152 static nv_t ire_nv_arr[] = {
1152 1153 { IRE_BROADCAST, "BROADCAST" },
1153 1154 { IRE_LOCAL, "LOCAL" },
1154 1155 { IRE_LOOPBACK, "LOOPBACK" },
1155 1156 { IRE_DEFAULT, "DEFAULT" },
1156 1157 { IRE_PREFIX, "PREFIX" },
1157 1158 { IRE_IF_NORESOLVER, "IF_NORESOL" },
1158 1159 { IRE_IF_RESOLVER, "IF_RESOLV" },
1159 1160 { IRE_IF_CLONE, "IF_CLONE" },
1160 1161 { IRE_HOST, "HOST" },
1161 1162 { IRE_MULTICAST, "MULTICAST" },
1162 1163 { IRE_NOROUTE, "NOROUTE" },
1163 1164 { 0 }
1164 1165 };
1165 1166
1166 1167 nv_t *ire_nv_tbl = ire_nv_arr;
1167 1168
1168 1169 /* Simple ICMP IP Header Template */
1169 1170 static ipha_t icmp_ipha = {
1170 1171 IP_SIMPLE_HDR_VERSION, 0, 0, 0, 0, 0, IPPROTO_ICMP
1171 1172 };
1172 1173
1173 1174 struct module_info ip_mod_info = {
1174 1175 IP_MOD_ID, IP_MOD_NAME, IP_MOD_MINPSZ, IP_MOD_MAXPSZ, IP_MOD_HIWAT,
1175 1176 IP_MOD_LOWAT
1176 1177 };
1177 1178
1178 1179 /*
1179 1180 * Duplicate static symbols within a module confuses mdb; so we avoid the
1180 1181 * problem by making the symbols here distinct from those in udp.c.
1181 1182 */
1182 1183
1183 1184 /*
1184 1185 * Entry points for IP as a device and as a module.
1185 1186 * We have separate open functions for the /dev/ip and /dev/ip6 devices.
1186 1187 */
1187 1188 static struct qinit iprinitv4 = {
1188 1189 ip_rput, NULL, ip_openv4, ip_close, NULL, &ip_mod_info
1189 1190 };
1190 1191
1191 1192 struct qinit iprinitv6 = {
1192 1193 ip_rput_v6, NULL, ip_openv6, ip_close, NULL, &ip_mod_info
1193 1194 };
1194 1195
1195 1196 static struct qinit ipwinit = {
1196 1197 ip_wput_nondata, ip_wsrv, NULL, NULL, NULL, &ip_mod_info
1197 1198 };
1198 1199
1199 1200 static struct qinit iplrinit = {
1200 1201 ip_lrput, NULL, ip_openv4, ip_close, NULL, &ip_mod_info
1201 1202 };
1202 1203
1203 1204 static struct qinit iplwinit = {
1204 1205 ip_lwput, NULL, NULL, NULL, NULL, &ip_mod_info
1205 1206 };
1206 1207
1207 1208 /* For AF_INET aka /dev/ip */
1208 1209 struct streamtab ipinfov4 = {
1209 1210 &iprinitv4, &ipwinit, &iplrinit, &iplwinit
1210 1211 };
1211 1212
1212 1213 /* For AF_INET6 aka /dev/ip6 */
1213 1214 struct streamtab ipinfov6 = {
1214 1215 &iprinitv6, &ipwinit, &iplrinit, &iplwinit
1215 1216 };
1216 1217
1217 1218 #ifdef DEBUG
1218 1219 boolean_t skip_sctp_cksum = B_FALSE;
1219 1220 #endif
1220 1221
1221 1222 /*
1222 1223 * Generate an ICMP fragmentation needed message.
1223 1224 * When called from ip_output side a minimal ip_recv_attr_t needs to be
1224 1225 * constructed by the caller.
1225 1226 */
1226 1227 void
1227 1228 icmp_frag_needed(mblk_t *mp, int mtu, ip_recv_attr_t *ira)
1228 1229 {
1229 1230 icmph_t icmph;
1230 1231 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
1231 1232
1232 1233 mp = icmp_pkt_err_ok(mp, ira);
1233 1234 if (mp == NULL)
1234 1235 return;
1235 1236
1236 1237 bzero(&icmph, sizeof (icmph_t));
1237 1238 icmph.icmph_type = ICMP_DEST_UNREACHABLE;
1238 1239 icmph.icmph_code = ICMP_FRAGMENTATION_NEEDED;
1239 1240 icmph.icmph_du_mtu = htons((uint16_t)mtu);
1240 1241 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutFragNeeded);
1241 1242 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDestUnreachs);
1242 1243
1243 1244 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
1244 1245 }
1245 1246
1246 1247 /*
1247 1248 * icmp_inbound_v4 deals with ICMP messages that are handled by IP.
1248 1249 * If the ICMP message is consumed by IP, i.e., it should not be delivered
1249 1250 * to any IPPROTO_ICMP raw sockets, then it returns NULL.
1250 1251 * Likewise, if the ICMP error is misformed (too short, etc), then it
1251 1252 * returns NULL. The caller uses this to determine whether or not to send
1252 1253 * to raw sockets.
1253 1254 *
1254 1255 * All error messages are passed to the matching transport stream.
1255 1256 *
1256 1257 * The following cases are handled by icmp_inbound:
1257 1258 * 1) It needs to send a reply back and possibly delivering it
1258 1259 * to the "interested" upper clients.
1259 1260 * 2) Return the mblk so that the caller can pass it to the RAW socket clients.
1260 1261 * 3) It needs to change some values in IP only.
1261 1262 * 4) It needs to change some values in IP and upper layers e.g TCP
1262 1263 * by delivering an error to the upper layers.
1263 1264 *
1264 1265 * We handle the above three cases in the context of IPsec in the
1265 1266 * following way :
1266 1267 *
1267 1268 * 1) Send the reply back in the same way as the request came in.
1268 1269 * If it came in encrypted, it goes out encrypted. If it came in
1269 1270 * clear, it goes out in clear. Thus, this will prevent chosen
1270 1271 * plain text attack.
1271 1272 * 2) The client may or may not expect things to come in secure.
1272 1273 * If it comes in secure, the policy constraints are checked
1273 1274 * before delivering it to the upper layers. If it comes in
1274 1275 * clear, ipsec_inbound_accept_clear will decide whether to
1275 1276 * accept this in clear or not. In both the cases, if the returned
1276 1277 * message (IP header + 8 bytes) that caused the icmp message has
1277 1278 * AH/ESP headers, it is sent up to AH/ESP for validation before
1278 1279 * sending up. If there are only 8 bytes of returned message, then
1279 1280 * upper client will not be notified.
1280 1281 * 3) Check with global policy to see whether it matches the constaints.
1281 1282 * But this will be done only if icmp_accept_messages_in_clear is
1282 1283 * zero.
1283 1284 * 4) If we need to change both in IP and ULP, then the decision taken
1284 1285 * while affecting the values in IP and while delivering up to TCP
1285 1286 * should be the same.
1286 1287 *
1287 1288 * There are two cases.
1288 1289 *
1289 1290 * a) If we reject data at the IP layer (ipsec_check_global_policy()
1290 1291 * failed), we will not deliver it to the ULP, even though they
1291 1292 * are *willing* to accept in *clear*. This is fine as our global
1292 1293 * disposition to icmp messages asks us reject the datagram.
1293 1294 *
1294 1295 * b) If we accept data at the IP layer (ipsec_check_global_policy()
1295 1296 * succeeded or icmp_accept_messages_in_clear is 1), and not able
1296 1297 * to deliver it to ULP (policy failed), it can lead to
1297 1298 * consistency problems. The cases known at this time are
1298 1299 * ICMP_DESTINATION_UNREACHABLE messages with following code
1299 1300 * values :
1300 1301 *
1301 1302 * - ICMP_FRAGMENTATION_NEEDED : IP adapts to the new value
1302 1303 * and Upper layer rejects. Then the communication will
1303 1304 * come to a stop. This is solved by making similar decisions
1304 1305 * at both levels. Currently, when we are unable to deliver
1305 1306 * to the Upper Layer (due to policy failures) while IP has
1306 1307 * adjusted dce_pmtu, the next outbound datagram would
1307 1308 * generate a local ICMP_FRAGMENTATION_NEEDED message - which
1308 1309 * will be with the right level of protection. Thus the right
1309 1310 * value will be communicated even if we are not able to
1310 1311 * communicate when we get from the wire initially. But this
1311 1312 * assumes there would be at least one outbound datagram after
1312 1313 * IP has adjusted its dce_pmtu value. To make things
1313 1314 * simpler, we accept in clear after the validation of
1314 1315 * AH/ESP headers.
1315 1316 *
1316 1317 * - Other ICMP ERRORS : We may not be able to deliver it to the
1317 1318 * upper layer depending on the level of protection the upper
1318 1319 * layer expects and the disposition in ipsec_inbound_accept_clear().
1319 1320 * ipsec_inbound_accept_clear() decides whether a given ICMP error
1320 1321 * should be accepted in clear when the Upper layer expects secure.
1321 1322 * Thus the communication may get aborted by some bad ICMP
1322 1323 * packets.
1323 1324 */
1324 1325 mblk_t *
1325 1326 icmp_inbound_v4(mblk_t *mp, ip_recv_attr_t *ira)
1326 1327 {
1327 1328 icmph_t *icmph;
1328 1329 ipha_t *ipha; /* Outer header */
1329 1330 int ip_hdr_length; /* Outer header length */
1330 1331 boolean_t interested;
1331 1332 ipif_t *ipif;
1332 1333 uint32_t ts;
1333 1334 uint32_t *tsp;
1334 1335 timestruc_t now;
1335 1336 ill_t *ill = ira->ira_ill;
1336 1337 ip_stack_t *ipst = ill->ill_ipst;
1337 1338 zoneid_t zoneid = ira->ira_zoneid;
1338 1339 int len_needed;
1339 1340 mblk_t *mp_ret = NULL;
1340 1341
1341 1342 ipha = (ipha_t *)mp->b_rptr;
1342 1343
1343 1344 BUMP_MIB(&ipst->ips_icmp_mib, icmpInMsgs);
1344 1345
1345 1346 ip_hdr_length = ira->ira_ip_hdr_length;
1346 1347 if ((mp->b_wptr - mp->b_rptr) < (ip_hdr_length + ICMPH_SIZE)) {
1347 1348 if (ira->ira_pktlen < (ip_hdr_length + ICMPH_SIZE)) {
1348 1349 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
1349 1350 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
1350 1351 freemsg(mp);
1351 1352 return (NULL);
1352 1353 }
1353 1354 /* Last chance to get real. */
1354 1355 ipha = ip_pullup(mp, ip_hdr_length + ICMPH_SIZE, ira);
1355 1356 if (ipha == NULL) {
1356 1357 BUMP_MIB(&ipst->ips_icmp_mib, icmpInErrors);
1357 1358 freemsg(mp);
1358 1359 return (NULL);
1359 1360 }
1360 1361 }
1361 1362
1362 1363 /* The IP header will always be a multiple of four bytes */
1363 1364 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1364 1365 ip2dbg(("icmp_inbound_v4: type %d code %d\n", icmph->icmph_type,
1365 1366 icmph->icmph_code));
1366 1367
1367 1368 /*
1368 1369 * We will set "interested" to "true" if we should pass a copy to
1369 1370 * the transport or if we handle the packet locally.
1370 1371 */
1371 1372 interested = B_FALSE;
1372 1373 switch (icmph->icmph_type) {
1373 1374 case ICMP_ECHO_REPLY:
1374 1375 BUMP_MIB(&ipst->ips_icmp_mib, icmpInEchoReps);
1375 1376 break;
1376 1377 case ICMP_DEST_UNREACHABLE:
1377 1378 if (icmph->icmph_code == ICMP_FRAGMENTATION_NEEDED)
1378 1379 BUMP_MIB(&ipst->ips_icmp_mib, icmpInFragNeeded);
1379 1380 interested = B_TRUE; /* Pass up to transport */
1380 1381 BUMP_MIB(&ipst->ips_icmp_mib, icmpInDestUnreachs);
1381 1382 break;
1382 1383 case ICMP_SOURCE_QUENCH:
1383 1384 interested = B_TRUE; /* Pass up to transport */
1384 1385 BUMP_MIB(&ipst->ips_icmp_mib, icmpInSrcQuenchs);
1385 1386 break;
1386 1387 case ICMP_REDIRECT:
1387 1388 if (!ipst->ips_ip_ignore_redirect)
1388 1389 interested = B_TRUE;
1389 1390 BUMP_MIB(&ipst->ips_icmp_mib, icmpInRedirects);
1390 1391 break;
1391 1392 case ICMP_ECHO_REQUEST:
1392 1393 /*
1393 1394 * Whether to respond to echo requests that come in as IP
1394 1395 * broadcasts or as IP multicast is subject to debate
1395 1396 * (what isn't?). We aim to please, you pick it.
1396 1397 * Default is do it.
1397 1398 */
1398 1399 if (ira->ira_flags & IRAF_MULTICAST) {
1399 1400 /* multicast: respond based on tunable */
1400 1401 interested = ipst->ips_ip_g_resp_to_echo_mcast;
1401 1402 } else if (ira->ira_flags & IRAF_BROADCAST) {
1402 1403 /* broadcast: respond based on tunable */
1403 1404 interested = ipst->ips_ip_g_resp_to_echo_bcast;
1404 1405 } else {
1405 1406 /* unicast: always respond */
1406 1407 interested = B_TRUE;
1407 1408 }
1408 1409 BUMP_MIB(&ipst->ips_icmp_mib, icmpInEchos);
1409 1410 if (!interested) {
1410 1411 /* We never pass these to RAW sockets */
1411 1412 freemsg(mp);
1412 1413 return (NULL);
1413 1414 }
1414 1415
1415 1416 /* Check db_ref to make sure we can modify the packet. */
1416 1417 if (mp->b_datap->db_ref > 1) {
1417 1418 mblk_t *mp1;
1418 1419
1419 1420 mp1 = copymsg(mp);
1420 1421 freemsg(mp);
1421 1422 if (!mp1) {
1422 1423 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
1423 1424 return (NULL);
1424 1425 }
1425 1426 mp = mp1;
1426 1427 ipha = (ipha_t *)mp->b_rptr;
1427 1428 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1428 1429 }
1429 1430 icmph->icmph_type = ICMP_ECHO_REPLY;
1430 1431 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutEchoReps);
1431 1432 icmp_send_reply_v4(mp, ipha, icmph, ira);
1432 1433 return (NULL);
1433 1434
1434 1435 case ICMP_ROUTER_ADVERTISEMENT:
1435 1436 case ICMP_ROUTER_SOLICITATION:
1436 1437 break;
1437 1438 case ICMP_TIME_EXCEEDED:
1438 1439 interested = B_TRUE; /* Pass up to transport */
1439 1440 BUMP_MIB(&ipst->ips_icmp_mib, icmpInTimeExcds);
1440 1441 break;
1441 1442 case ICMP_PARAM_PROBLEM:
1442 1443 interested = B_TRUE; /* Pass up to transport */
1443 1444 BUMP_MIB(&ipst->ips_icmp_mib, icmpInParmProbs);
1444 1445 break;
1445 1446 case ICMP_TIME_STAMP_REQUEST:
1446 1447 /* Response to Time Stamp Requests is local policy. */
1447 1448 if (ipst->ips_ip_g_resp_to_timestamp) {
1448 1449 if (ira->ira_flags & IRAF_MULTIBROADCAST)
1449 1450 interested =
1450 1451 ipst->ips_ip_g_resp_to_timestamp_bcast;
1451 1452 else
1452 1453 interested = B_TRUE;
1453 1454 }
1454 1455 if (!interested) {
1455 1456 /* We never pass these to RAW sockets */
1456 1457 freemsg(mp);
1457 1458 return (NULL);
1458 1459 }
1459 1460
1460 1461 /* Make sure we have enough of the packet */
1461 1462 len_needed = ip_hdr_length + ICMPH_SIZE +
1462 1463 3 * sizeof (uint32_t);
1463 1464
1464 1465 if (mp->b_wptr - mp->b_rptr < len_needed) {
1465 1466 ipha = ip_pullup(mp, len_needed, ira);
1466 1467 if (ipha == NULL) {
1467 1468 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1468 1469 ip_drop_input("ipIfStatsInDiscards - ip_pullup",
1469 1470 mp, ill);
1470 1471 freemsg(mp);
1471 1472 return (NULL);
1472 1473 }
1473 1474 /* Refresh following the pullup. */
1474 1475 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1475 1476 }
1476 1477 BUMP_MIB(&ipst->ips_icmp_mib, icmpInTimestamps);
1477 1478 /* Check db_ref to make sure we can modify the packet. */
1478 1479 if (mp->b_datap->db_ref > 1) {
1479 1480 mblk_t *mp1;
1480 1481
1481 1482 mp1 = copymsg(mp);
1482 1483 freemsg(mp);
1483 1484 if (!mp1) {
1484 1485 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
1485 1486 return (NULL);
1486 1487 }
1487 1488 mp = mp1;
1488 1489 ipha = (ipha_t *)mp->b_rptr;
1489 1490 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1490 1491 }
1491 1492 icmph->icmph_type = ICMP_TIME_STAMP_REPLY;
1492 1493 tsp = (uint32_t *)&icmph[1];
1493 1494 tsp++; /* Skip past 'originate time' */
1494 1495 /* Compute # of milliseconds since midnight */
1495 1496 gethrestime(&now);
1496 1497 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
1497 1498 NSEC2MSEC(now.tv_nsec);
1498 1499 *tsp++ = htonl(ts); /* Lay in 'receive time' */
1499 1500 *tsp++ = htonl(ts); /* Lay in 'send time' */
1500 1501 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutTimestampReps);
1501 1502 icmp_send_reply_v4(mp, ipha, icmph, ira);
1502 1503 return (NULL);
1503 1504
1504 1505 case ICMP_TIME_STAMP_REPLY:
1505 1506 BUMP_MIB(&ipst->ips_icmp_mib, icmpInTimestampReps);
1506 1507 break;
1507 1508 case ICMP_INFO_REQUEST:
1508 1509 /* Per RFC 1122 3.2.2.7, ignore this. */
1509 1510 case ICMP_INFO_REPLY:
1510 1511 break;
1511 1512 case ICMP_ADDRESS_MASK_REQUEST:
1512 1513 if (ira->ira_flags & IRAF_MULTIBROADCAST) {
1513 1514 interested =
1514 1515 ipst->ips_ip_respond_to_address_mask_broadcast;
1515 1516 } else {
1516 1517 interested = B_TRUE;
1517 1518 }
1518 1519 if (!interested) {
1519 1520 /* We never pass these to RAW sockets */
1520 1521 freemsg(mp);
1521 1522 return (NULL);
1522 1523 }
1523 1524 len_needed = ip_hdr_length + ICMPH_SIZE + IP_ADDR_LEN;
1524 1525 if (mp->b_wptr - mp->b_rptr < len_needed) {
1525 1526 ipha = ip_pullup(mp, len_needed, ira);
1526 1527 if (ipha == NULL) {
1527 1528 BUMP_MIB(ill->ill_ip_mib,
1528 1529 ipIfStatsInTruncatedPkts);
1529 1530 ip_drop_input("ipIfStatsInTruncatedPkts", mp,
1530 1531 ill);
1531 1532 freemsg(mp);
1532 1533 return (NULL);
1533 1534 }
1534 1535 /* Refresh following the pullup. */
1535 1536 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1536 1537 }
1537 1538 BUMP_MIB(&ipst->ips_icmp_mib, icmpInAddrMasks);
1538 1539 /* Check db_ref to make sure we can modify the packet. */
1539 1540 if (mp->b_datap->db_ref > 1) {
1540 1541 mblk_t *mp1;
1541 1542
1542 1543 mp1 = copymsg(mp);
1543 1544 freemsg(mp);
1544 1545 if (!mp1) {
1545 1546 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
1546 1547 return (NULL);
1547 1548 }
1548 1549 mp = mp1;
1549 1550 ipha = (ipha_t *)mp->b_rptr;
1550 1551 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1551 1552 }
1552 1553 /*
1553 1554 * Need the ipif with the mask be the same as the source
1554 1555 * address of the mask reply. For unicast we have a specific
1555 1556 * ipif. For multicast/broadcast we only handle onlink
1556 1557 * senders, and use the source address to pick an ipif.
1557 1558 */
1558 1559 ipif = ipif_lookup_addr(ipha->ipha_dst, ill, zoneid, ipst);
1559 1560 if (ipif == NULL) {
1560 1561 /* Broadcast or multicast */
1561 1562 ipif = ipif_lookup_remote(ill, ipha->ipha_src, zoneid);
1562 1563 if (ipif == NULL) {
1563 1564 freemsg(mp);
1564 1565 return (NULL);
1565 1566 }
1566 1567 }
1567 1568 icmph->icmph_type = ICMP_ADDRESS_MASK_REPLY;
1568 1569 bcopy(&ipif->ipif_net_mask, &icmph[1], IP_ADDR_LEN);
1569 1570 ipif_refrele(ipif);
1570 1571 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutAddrMaskReps);
1571 1572 icmp_send_reply_v4(mp, ipha, icmph, ira);
1572 1573 return (NULL);
1573 1574
1574 1575 case ICMP_ADDRESS_MASK_REPLY:
1575 1576 BUMP_MIB(&ipst->ips_icmp_mib, icmpInAddrMaskReps);
1576 1577 break;
1577 1578 default:
1578 1579 interested = B_TRUE; /* Pass up to transport */
1579 1580 BUMP_MIB(&ipst->ips_icmp_mib, icmpInUnknowns);
1580 1581 break;
1581 1582 }
1582 1583 /*
1583 1584 * See if there is an ICMP client to avoid an extra copymsg/freemsg
1584 1585 * if there isn't one.
1585 1586 */
1586 1587 if (ipst->ips_ipcl_proto_fanout_v4[IPPROTO_ICMP].connf_head != NULL) {
1587 1588 /* If there is an ICMP client and we want one too, copy it. */
1588 1589
1589 1590 if (!interested) {
1590 1591 /* Caller will deliver to RAW sockets */
1591 1592 return (mp);
1592 1593 }
1593 1594 mp_ret = copymsg(mp);
1594 1595 if (mp_ret == NULL) {
1595 1596 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1596 1597 ip_drop_input("ipIfStatsInDiscards - copymsg", mp, ill);
1597 1598 }
1598 1599 } else if (!interested) {
1599 1600 /* Neither we nor raw sockets are interested. Drop packet now */
1600 1601 freemsg(mp);
1601 1602 return (NULL);
1602 1603 }
1603 1604
1604 1605 /*
1605 1606 * ICMP error or redirect packet. Make sure we have enough of
1606 1607 * the header and that db_ref == 1 since we might end up modifying
1607 1608 * the packet.
1608 1609 */
1609 1610 if (mp->b_cont != NULL) {
1610 1611 if (ip_pullup(mp, -1, ira) == NULL) {
1611 1612 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1612 1613 ip_drop_input("ipIfStatsInDiscards - ip_pullup",
1613 1614 mp, ill);
1614 1615 freemsg(mp);
1615 1616 return (mp_ret);
1616 1617 }
1617 1618 }
1618 1619
1619 1620 if (mp->b_datap->db_ref > 1) {
1620 1621 mblk_t *mp1;
1621 1622
1622 1623 mp1 = copymsg(mp);
1623 1624 if (mp1 == NULL) {
1624 1625 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1625 1626 ip_drop_input("ipIfStatsInDiscards - copymsg", mp, ill);
1626 1627 freemsg(mp);
1627 1628 return (mp_ret);
1628 1629 }
1629 1630 freemsg(mp);
1630 1631 mp = mp1;
1631 1632 }
1632 1633
1633 1634 /*
1634 1635 * In case mp has changed, verify the message before any further
1635 1636 * processes.
1636 1637 */
1637 1638 ipha = (ipha_t *)mp->b_rptr;
1638 1639 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1639 1640 if (!icmp_inbound_verify_v4(mp, icmph, ira)) {
1640 1641 freemsg(mp);
1641 1642 return (mp_ret);
1642 1643 }
1643 1644
1644 1645 switch (icmph->icmph_type) {
1645 1646 case ICMP_REDIRECT:
1646 1647 icmp_redirect_v4(mp, ipha, icmph, ira);
1647 1648 break;
1648 1649 case ICMP_DEST_UNREACHABLE:
1649 1650 if (icmph->icmph_code == ICMP_FRAGMENTATION_NEEDED) {
1650 1651 /* Update DCE and adjust MTU is icmp header if needed */
1651 1652 icmp_inbound_too_big_v4(icmph, ira);
1652 1653 }
1653 1654 /* FALLTHROUGH */
1654 1655 default:
1655 1656 icmp_inbound_error_fanout_v4(mp, icmph, ira);
1656 1657 break;
1657 1658 }
1658 1659 return (mp_ret);
1659 1660 }
1660 1661
1661 1662 /*
1662 1663 * Send an ICMP echo, timestamp or address mask reply.
1663 1664 * The caller has already updated the payload part of the packet.
1664 1665 * We handle the ICMP checksum, IP source address selection and feed
1665 1666 * the packet into ip_output_simple.
1666 1667 */
1667 1668 static void
1668 1669 icmp_send_reply_v4(mblk_t *mp, ipha_t *ipha, icmph_t *icmph,
1669 1670 ip_recv_attr_t *ira)
1670 1671 {
1671 1672 uint_t ip_hdr_length = ira->ira_ip_hdr_length;
1672 1673 ill_t *ill = ira->ira_ill;
1673 1674 ip_stack_t *ipst = ill->ill_ipst;
1674 1675 ip_xmit_attr_t ixas;
1675 1676
1676 1677 /* Send out an ICMP packet */
1677 1678 icmph->icmph_checksum = 0;
1678 1679 icmph->icmph_checksum = IP_CSUM(mp, ip_hdr_length, 0);
1679 1680 /* Reset time to live. */
1680 1681 ipha->ipha_ttl = ipst->ips_ip_def_ttl;
1681 1682 {
1682 1683 /* Swap source and destination addresses */
1683 1684 ipaddr_t tmp;
1684 1685
1685 1686 tmp = ipha->ipha_src;
1686 1687 ipha->ipha_src = ipha->ipha_dst;
1687 1688 ipha->ipha_dst = tmp;
1688 1689 }
1689 1690 ipha->ipha_ident = 0;
1690 1691 if (!IS_SIMPLE_IPH(ipha))
1691 1692 icmp_options_update(ipha);
1692 1693
1693 1694 bzero(&ixas, sizeof (ixas));
1694 1695 ixas.ixa_flags = IXAF_BASIC_SIMPLE_V4;
1695 1696 ixas.ixa_zoneid = ira->ira_zoneid;
1696 1697 ixas.ixa_cred = kcred;
1697 1698 ixas.ixa_cpid = NOPID;
1698 1699 ixas.ixa_tsl = ira->ira_tsl; /* Behave as a multi-level responder */
1699 1700 ixas.ixa_ifindex = 0;
1700 1701 ixas.ixa_ipst = ipst;
1701 1702 ixas.ixa_multicast_ttl = IP_DEFAULT_MULTICAST_TTL;
1702 1703
1703 1704 if (!(ira->ira_flags & IRAF_IPSEC_SECURE)) {
1704 1705 /*
1705 1706 * This packet should go out the same way as it
1706 1707 * came in i.e in clear, independent of the IPsec policy
1707 1708 * for transmitting packets.
1708 1709 */
1709 1710 ixas.ixa_flags |= IXAF_NO_IPSEC;
1710 1711 } else {
1711 1712 if (!ipsec_in_to_out(ira, &ixas, mp, ipha, NULL)) {
1712 1713 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1713 1714 /* Note: mp already consumed and ip_drop_packet done */
1714 1715 return;
1715 1716 }
1716 1717 }
1717 1718 if (ira->ira_flags & IRAF_MULTIBROADCAST) {
1718 1719 /*
1719 1720 * Not one or our addresses (IRE_LOCALs), thus we let
1720 1721 * ip_output_simple pick the source.
1721 1722 */
1722 1723 ipha->ipha_src = INADDR_ANY;
1723 1724 ixas.ixa_flags |= IXAF_SET_SOURCE;
1724 1725 }
1725 1726 /* Should we send with DF and use dce_pmtu? */
1726 1727 if (ipst->ips_ipv4_icmp_return_pmtu) {
1727 1728 ixas.ixa_flags |= IXAF_PMTU_DISCOVERY;
1728 1729 ipha->ipha_fragment_offset_and_flags |= IPH_DF_HTONS;
1729 1730 }
1730 1731
1731 1732 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutMsgs);
1732 1733
1733 1734 (void) ip_output_simple(mp, &ixas);
1734 1735 ixa_cleanup(&ixas);
1735 1736 }
1736 1737
1737 1738 /*
1738 1739 * Verify the ICMP messages for either for ICMP error or redirect packet.
1739 1740 * The caller should have fully pulled up the message. If it's a redirect
1740 1741 * packet, only basic checks on IP header will be done; otherwise, verify
1741 1742 * the packet by looking at the included ULP header.
1742 1743 *
1743 1744 * Called before icmp_inbound_error_fanout_v4 is called.
1744 1745 */
1745 1746 static boolean_t
1746 1747 icmp_inbound_verify_v4(mblk_t *mp, icmph_t *icmph, ip_recv_attr_t *ira)
1747 1748 {
1748 1749 ill_t *ill = ira->ira_ill;
1749 1750 int hdr_length;
1750 1751 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
1751 1752 conn_t *connp;
1752 1753 ipha_t *ipha; /* Inner IP header */
1753 1754
1754 1755 ipha = (ipha_t *)&icmph[1];
1755 1756 if ((uchar_t *)ipha + IP_SIMPLE_HDR_LENGTH > mp->b_wptr)
1756 1757 goto truncated;
1757 1758
1758 1759 hdr_length = IPH_HDR_LENGTH(ipha);
1759 1760
1760 1761 if ((IPH_HDR_VERSION(ipha) != IPV4_VERSION))
1761 1762 goto discard_pkt;
1762 1763
1763 1764 if (hdr_length < sizeof (ipha_t))
1764 1765 goto truncated;
1765 1766
1766 1767 if ((uchar_t *)ipha + hdr_length > mp->b_wptr)
1767 1768 goto truncated;
1768 1769
1769 1770 /*
1770 1771 * Stop here for ICMP_REDIRECT.
1771 1772 */
1772 1773 if (icmph->icmph_type == ICMP_REDIRECT)
1773 1774 return (B_TRUE);
1774 1775
1775 1776 /*
1776 1777 * ICMP errors only.
1777 1778 */
1778 1779 switch (ipha->ipha_protocol) {
1779 1780 case IPPROTO_UDP:
1780 1781 /*
1781 1782 * Verify we have at least ICMP_MIN_TP_HDR_LEN bytes of
1782 1783 * transport header.
1783 1784 */
1784 1785 if ((uchar_t *)ipha + hdr_length + ICMP_MIN_TP_HDR_LEN >
1785 1786 mp->b_wptr)
1786 1787 goto truncated;
1787 1788 break;
1788 1789 case IPPROTO_TCP: {
1789 1790 tcpha_t *tcpha;
1790 1791
1791 1792 /*
1792 1793 * Verify we have at least ICMP_MIN_TP_HDR_LEN bytes of
1793 1794 * transport header.
1794 1795 */
1795 1796 if ((uchar_t *)ipha + hdr_length + ICMP_MIN_TP_HDR_LEN >
1796 1797 mp->b_wptr)
1797 1798 goto truncated;
1798 1799
1799 1800 tcpha = (tcpha_t *)((uchar_t *)ipha + hdr_length);
1800 1801 connp = ipcl_tcp_lookup_reversed_ipv4(ipha, tcpha, TCPS_LISTEN,
1801 1802 ipst);
1802 1803 if (connp == NULL)
1803 1804 goto discard_pkt;
1804 1805
1805 1806 if ((connp->conn_verifyicmp != NULL) &&
1806 1807 !connp->conn_verifyicmp(connp, tcpha, icmph, NULL, ira)) {
1807 1808 CONN_DEC_REF(connp);
1808 1809 goto discard_pkt;
1809 1810 }
1810 1811 CONN_DEC_REF(connp);
1811 1812 break;
1812 1813 }
1813 1814 case IPPROTO_SCTP:
1814 1815 /*
1815 1816 * Verify we have at least ICMP_MIN_TP_HDR_LEN bytes of
1816 1817 * transport header.
1817 1818 */
1818 1819 if ((uchar_t *)ipha + hdr_length + ICMP_MIN_TP_HDR_LEN >
1819 1820 mp->b_wptr)
1820 1821 goto truncated;
1821 1822 break;
1822 1823 case IPPROTO_ESP:
1823 1824 case IPPROTO_AH:
1824 1825 break;
1825 1826 case IPPROTO_ENCAP:
1826 1827 if ((uchar_t *)ipha + hdr_length + sizeof (ipha_t) >
1827 1828 mp->b_wptr)
1828 1829 goto truncated;
1829 1830 break;
1830 1831 default:
1831 1832 break;
1832 1833 }
1833 1834
1834 1835 return (B_TRUE);
1835 1836
1836 1837 discard_pkt:
1837 1838 /* Bogus ICMP error. */
1838 1839 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1839 1840 return (B_FALSE);
1840 1841
1841 1842 truncated:
1842 1843 /* We pulled up everthing already. Must be truncated */
1843 1844 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
1844 1845 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
1845 1846 return (B_FALSE);
1846 1847 }
1847 1848
1848 1849 /* Table from RFC 1191 */
1849 1850 static int icmp_frag_size_table[] =
1850 1851 { 32000, 17914, 8166, 4352, 2002, 1496, 1006, 508, 296, 68 };
1851 1852
1852 1853 /*
1853 1854 * Process received ICMP Packet too big.
1854 1855 * Just handles the DCE create/update, including using the above table of
1855 1856 * PMTU guesses. The caller is responsible for validating the packet before
1856 1857 * passing it in and also to fanout the ICMP error to any matching transport
1857 1858 * conns. Assumes the message has been fully pulled up and verified.
1858 1859 *
1859 1860 * Before getting here, the caller has called icmp_inbound_verify_v4()
1860 1861 * that should have verified with ULP to prevent undoing the changes we're
1861 1862 * going to make to DCE. For example, TCP might have verified that the packet
1862 1863 * which generated error is in the send window.
1863 1864 *
1864 1865 * In some cases modified this MTU in the ICMP header packet; the caller
1865 1866 * should pass to the matching ULP after this returns.
1866 1867 */
1867 1868 static void
1868 1869 icmp_inbound_too_big_v4(icmph_t *icmph, ip_recv_attr_t *ira)
1869 1870 {
1870 1871 dce_t *dce;
1871 1872 int old_mtu;
1872 1873 int mtu, orig_mtu;
1873 1874 ipaddr_t dst;
1874 1875 boolean_t disable_pmtud;
1875 1876 ill_t *ill = ira->ira_ill;
1876 1877 ip_stack_t *ipst = ill->ill_ipst;
1877 1878 uint_t hdr_length;
1878 1879 ipha_t *ipha;
1879 1880
1880 1881 /* Caller already pulled up everything. */
1881 1882 ipha = (ipha_t *)&icmph[1];
1882 1883 ASSERT(icmph->icmph_type == ICMP_DEST_UNREACHABLE &&
1883 1884 icmph->icmph_code == ICMP_FRAGMENTATION_NEEDED);
1884 1885 ASSERT(ill != NULL);
1885 1886
1886 1887 hdr_length = IPH_HDR_LENGTH(ipha);
1887 1888
1888 1889 /*
1889 1890 * We handle path MTU for source routed packets since the DCE
1890 1891 * is looked up using the final destination.
1891 1892 */
1892 1893 dst = ip_get_dst(ipha);
1893 1894
1894 1895 dce = dce_lookup_and_add_v4(dst, ipst);
1895 1896 if (dce == NULL) {
1896 1897 /* Couldn't add a unique one - ENOMEM */
1897 1898 ip1dbg(("icmp_inbound_too_big_v4: no dce for 0x%x\n",
1898 1899 ntohl(dst)));
1899 1900 return;
1900 1901 }
1901 1902
1902 1903 /* Check for MTU discovery advice as described in RFC 1191 */
1903 1904 mtu = ntohs(icmph->icmph_du_mtu);
1904 1905 orig_mtu = mtu;
1905 1906 disable_pmtud = B_FALSE;
1906 1907
1907 1908 mutex_enter(&dce->dce_lock);
1908 1909 if (dce->dce_flags & DCEF_PMTU)
1909 1910 old_mtu = dce->dce_pmtu;
1910 1911 else
1911 1912 old_mtu = ill->ill_mtu;
1912 1913
1913 1914 if (icmph->icmph_du_zero != 0 || mtu < ipst->ips_ip_pmtu_min) {
1914 1915 uint32_t length;
1915 1916 int i;
1916 1917
1917 1918 /*
1918 1919 * Use the table from RFC 1191 to figure out
1919 1920 * the next "plateau" based on the length in
1920 1921 * the original IP packet.
1921 1922 */
1922 1923 length = ntohs(ipha->ipha_length);
1923 1924 DTRACE_PROBE2(ip4__pmtu__guess, dce_t *, dce,
1924 1925 uint32_t, length);
1925 1926 if (old_mtu <= length &&
1926 1927 old_mtu >= length - hdr_length) {
1927 1928 /*
1928 1929 * Handle broken BSD 4.2 systems that
1929 1930 * return the wrong ipha_length in ICMP
1930 1931 * errors.
1931 1932 */
1932 1933 ip1dbg(("Wrong mtu: sent %d, dce %d\n",
1933 1934 length, old_mtu));
1934 1935 length -= hdr_length;
1935 1936 }
1936 1937 for (i = 0; i < A_CNT(icmp_frag_size_table); i++) {
1937 1938 if (length > icmp_frag_size_table[i])
1938 1939 break;
1939 1940 }
1940 1941 if (i == A_CNT(icmp_frag_size_table)) {
1941 1942 /* Smaller than IP_MIN_MTU! */
1942 1943 ip1dbg(("Too big for packet size %d\n",
1943 1944 length));
1944 1945 disable_pmtud = B_TRUE;
1945 1946 mtu = ipst->ips_ip_pmtu_min;
1946 1947 } else {
1947 1948 mtu = icmp_frag_size_table[i];
1948 1949 ip1dbg(("Calculated mtu %d, packet size %d, "
1949 1950 "before %d\n", mtu, length, old_mtu));
1950 1951 if (mtu < ipst->ips_ip_pmtu_min) {
1951 1952 mtu = ipst->ips_ip_pmtu_min;
1952 1953 disable_pmtud = B_TRUE;
1953 1954 }
1954 1955 }
1955 1956 }
1956 1957 if (disable_pmtud)
1957 1958 dce->dce_flags |= DCEF_TOO_SMALL_PMTU;
1958 1959 else
1959 1960 dce->dce_flags &= ~DCEF_TOO_SMALL_PMTU;
1960 1961
1961 1962 dce->dce_pmtu = MIN(old_mtu, mtu);
1962 1963 /* Prepare to send the new max frag size for the ULP. */
1963 1964 icmph->icmph_du_zero = 0;
1964 1965 icmph->icmph_du_mtu = htons((uint16_t)dce->dce_pmtu);
1965 1966 DTRACE_PROBE4(ip4__pmtu__change, icmph_t *, icmph, dce_t *,
1966 1967 dce, int, orig_mtu, int, mtu);
1967 1968
1968 1969 /* We now have a PMTU for sure */
1969 1970 dce->dce_flags |= DCEF_PMTU;
1970 1971 dce->dce_last_change_time = TICK_TO_SEC(ddi_get_lbolt64());
1971 1972 mutex_exit(&dce->dce_lock);
1972 1973 /*
1973 1974 * After dropping the lock the new value is visible to everyone.
1974 1975 * Then we bump the generation number so any cached values reinspect
1975 1976 * the dce_t.
1976 1977 */
1977 1978 dce_increment_generation(dce);
1978 1979 dce_refrele(dce);
1979 1980 }
1980 1981
1981 1982 /*
1982 1983 * If the packet in error is Self-Encapsulated, icmp_inbound_error_fanout_v4
1983 1984 * calls this function.
1984 1985 */
1985 1986 static mblk_t *
1986 1987 icmp_inbound_self_encap_error_v4(mblk_t *mp, ipha_t *ipha, ipha_t *in_ipha)
1987 1988 {
1988 1989 int length;
1989 1990
1990 1991 ASSERT(mp->b_datap->db_type == M_DATA);
1991 1992
1992 1993 /* icmp_inbound_v4 has already pulled up the whole error packet */
1993 1994 ASSERT(mp->b_cont == NULL);
1994 1995
1995 1996 /*
1996 1997 * The length that we want to overlay is the inner header
1997 1998 * and what follows it.
1998 1999 */
1999 2000 length = msgdsize(mp) - ((uchar_t *)in_ipha - mp->b_rptr);
2000 2001
2001 2002 /*
2002 2003 * Overlay the inner header and whatever follows it over the
2003 2004 * outer header.
2004 2005 */
2005 2006 bcopy((uchar_t *)in_ipha, (uchar_t *)ipha, length);
2006 2007
2007 2008 /* Adjust for what we removed */
2008 2009 mp->b_wptr -= (uchar_t *)in_ipha - (uchar_t *)ipha;
2009 2010 return (mp);
2010 2011 }
2011 2012
2012 2013 /*
2013 2014 * Try to pass the ICMP message upstream in case the ULP cares.
2014 2015 *
2015 2016 * If the packet that caused the ICMP error is secure, we send
2016 2017 * it to AH/ESP to make sure that the attached packet has a
2017 2018 * valid association. ipha in the code below points to the
2018 2019 * IP header of the packet that caused the error.
2019 2020 *
2020 2021 * For IPsec cases, we let the next-layer-up (which has access to
2021 2022 * cached policy on the conn_t, or can query the SPD directly)
2022 2023 * subtract out any IPsec overhead if they must. We therefore make no
2023 2024 * adjustments here for IPsec overhead.
2024 2025 *
2025 2026 * IFN could have been generated locally or by some router.
2026 2027 *
2027 2028 * LOCAL : ire_send_wire (before calling ipsec_out_process) can call
2028 2029 * icmp_frag_needed/icmp_pkt2big_v6 to generated a local IFN.
2029 2030 * This happens because IP adjusted its value of MTU on an
2030 2031 * earlier IFN message and could not tell the upper layer,
2031 2032 * the new adjusted value of MTU e.g. Packet was encrypted
2032 2033 * or there was not enough information to fanout to upper
2033 2034 * layers. Thus on the next outbound datagram, ire_send_wire
2034 2035 * generates the IFN, where IPsec processing has *not* been
2035 2036 * done.
2036 2037 *
2037 2038 * Note that we retain ixa_fragsize across IPsec thus once
2038 2039 * we have picking ixa_fragsize and entered ipsec_out_process we do
2039 2040 * no change the fragsize even if the path MTU changes before
2040 2041 * we reach ip_output_post_ipsec.
2041 2042 *
2042 2043 * In the local case, IRAF_LOOPBACK will be set indicating
2043 2044 * that IFN was generated locally.
2044 2045 *
2045 2046 * ROUTER : IFN could be secure or non-secure.
2046 2047 *
2047 2048 * * SECURE : We use the IPSEC_IN to fanout to AH/ESP if the
2048 2049 * packet in error has AH/ESP headers to validate the AH/ESP
2049 2050 * headers. AH/ESP will verify whether there is a valid SA or
2050 2051 * not and send it back. We will fanout again if we have more
2051 2052 * data in the packet.
2052 2053 *
2053 2054 * If the packet in error does not have AH/ESP, we handle it
2054 2055 * like any other case.
2055 2056 *
2056 2057 * * NON_SECURE : If the packet in error has AH/ESP headers, we send it
2057 2058 * up to AH/ESP for validation. AH/ESP will verify whether there is a
2058 2059 * valid SA or not and send it back. We will fanout again if
2059 2060 * we have more data in the packet.
2060 2061 *
2061 2062 * If the packet in error does not have AH/ESP, we handle it
2062 2063 * like any other case.
2063 2064 *
2064 2065 * The caller must have called icmp_inbound_verify_v4.
2065 2066 */
2066 2067 static void
2067 2068 icmp_inbound_error_fanout_v4(mblk_t *mp, icmph_t *icmph, ip_recv_attr_t *ira)
2068 2069 {
2069 2070 uint16_t *up; /* Pointer to ports in ULP header */
2070 2071 uint32_t ports; /* reversed ports for fanout */
2071 2072 ipha_t ripha; /* With reversed addresses */
2072 2073 ipha_t *ipha; /* Inner IP header */
2073 2074 uint_t hdr_length; /* Inner IP header length */
2074 2075 tcpha_t *tcpha;
2075 2076 conn_t *connp;
2076 2077 ill_t *ill = ira->ira_ill;
2077 2078 ip_stack_t *ipst = ill->ill_ipst;
2078 2079 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
2079 2080 ill_t *rill = ira->ira_rill;
2080 2081
2081 2082 /* Caller already pulled up everything. */
2082 2083 ipha = (ipha_t *)&icmph[1];
2083 2084 ASSERT((uchar_t *)&ipha[1] <= mp->b_wptr);
2084 2085 ASSERT(mp->b_cont == NULL);
2085 2086
2086 2087 hdr_length = IPH_HDR_LENGTH(ipha);
2087 2088 ira->ira_protocol = ipha->ipha_protocol;
2088 2089
2089 2090 /*
2090 2091 * We need a separate IP header with the source and destination
2091 2092 * addresses reversed to do fanout/classification because the ipha in
2092 2093 * the ICMP error is in the form we sent it out.
2093 2094 */
2094 2095 ripha.ipha_src = ipha->ipha_dst;
2095 2096 ripha.ipha_dst = ipha->ipha_src;
2096 2097 ripha.ipha_protocol = ipha->ipha_protocol;
2097 2098 ripha.ipha_version_and_hdr_length = ipha->ipha_version_and_hdr_length;
2098 2099
2099 2100 ip2dbg(("icmp_inbound_error_v4: proto %d %x to %x: %d/%d\n",
2100 2101 ripha.ipha_protocol, ntohl(ipha->ipha_src),
2101 2102 ntohl(ipha->ipha_dst),
2102 2103 icmph->icmph_type, icmph->icmph_code));
2103 2104
2104 2105 switch (ipha->ipha_protocol) {
2105 2106 case IPPROTO_UDP:
2106 2107 up = (uint16_t *)((uchar_t *)ipha + hdr_length);
2107 2108
2108 2109 /* Attempt to find a client stream based on port. */
2109 2110 ip2dbg(("icmp_inbound_error_v4: UDP ports %d to %d\n",
2110 2111 ntohs(up[0]), ntohs(up[1])));
2111 2112
2112 2113 /* Note that we send error to all matches. */
2113 2114 ira->ira_flags |= IRAF_ICMP_ERROR;
2114 2115 ip_fanout_udp_multi_v4(mp, &ripha, up[0], up[1], ira);
2115 2116 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2116 2117 return;
2117 2118
2118 2119 case IPPROTO_TCP:
2119 2120 /*
2120 2121 * Find a TCP client stream for this packet.
2121 2122 * Note that we do a reverse lookup since the header is
2122 2123 * in the form we sent it out.
2123 2124 */
2124 2125 tcpha = (tcpha_t *)((uchar_t *)ipha + hdr_length);
2125 2126 connp = ipcl_tcp_lookup_reversed_ipv4(ipha, tcpha, TCPS_LISTEN,
2126 2127 ipst);
2127 2128 if (connp == NULL)
2128 2129 goto discard_pkt;
2129 2130
2130 2131 if (CONN_INBOUND_POLICY_PRESENT(connp, ipss) ||
2131 2132 (ira->ira_flags & IRAF_IPSEC_SECURE)) {
2132 2133 mp = ipsec_check_inbound_policy(mp, connp,
2133 2134 ipha, NULL, ira);
2134 2135 if (mp == NULL) {
2135 2136 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
2136 2137 /* Note that mp is NULL */
2137 2138 ip_drop_input("ipIfStatsInDiscards", mp, ill);
2138 2139 CONN_DEC_REF(connp);
2139 2140 return;
2140 2141 }
2141 2142 }
2142 2143
2143 2144 ira->ira_flags |= IRAF_ICMP_ERROR;
2144 2145 ira->ira_ill = ira->ira_rill = NULL;
2145 2146 if (IPCL_IS_TCP(connp)) {
2146 2147 SQUEUE_ENTER_ONE(connp->conn_sqp, mp,
2147 2148 connp->conn_recvicmp, connp, ira, SQ_FILL,
2148 2149 SQTAG_TCP_INPUT_ICMP_ERR);
2149 2150 } else {
2150 2151 /* Not TCP; must be SOCK_RAW, IPPROTO_TCP */
2151 2152 (connp->conn_recv)(connp, mp, NULL, ira);
2152 2153 CONN_DEC_REF(connp);
2153 2154 }
2154 2155 ira->ira_ill = ill;
2155 2156 ira->ira_rill = rill;
2156 2157 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2157 2158 return;
2158 2159
2159 2160 case IPPROTO_SCTP:
2160 2161 up = (uint16_t *)((uchar_t *)ipha + hdr_length);
2161 2162 /* Find a SCTP client stream for this packet. */
2162 2163 ((uint16_t *)&ports)[0] = up[1];
2163 2164 ((uint16_t *)&ports)[1] = up[0];
2164 2165
2165 2166 ira->ira_flags |= IRAF_ICMP_ERROR;
2166 2167 ip_fanout_sctp(mp, &ripha, NULL, ports, ira);
2167 2168 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2168 2169 return;
2169 2170
2170 2171 case IPPROTO_ESP:
2171 2172 case IPPROTO_AH:
2172 2173 if (!ipsec_loaded(ipss)) {
2173 2174 ip_proto_not_sup(mp, ira);
2174 2175 return;
2175 2176 }
2176 2177
2177 2178 if (ipha->ipha_protocol == IPPROTO_ESP)
2178 2179 mp = ipsecesp_icmp_error(mp, ira);
2179 2180 else
2180 2181 mp = ipsecah_icmp_error(mp, ira);
2181 2182 if (mp == NULL)
2182 2183 return;
2183 2184
2184 2185 /* Just in case ipsec didn't preserve the NULL b_cont */
2185 2186 if (mp->b_cont != NULL) {
2186 2187 if (!pullupmsg(mp, -1))
2187 2188 goto discard_pkt;
2188 2189 }
2189 2190
2190 2191 /*
2191 2192 * Note that ira_pktlen and ira_ip_hdr_length are no longer
2192 2193 * correct, but we don't use them any more here.
2193 2194 *
2194 2195 * If succesful, the mp has been modified to not include
2195 2196 * the ESP/AH header so we can fanout to the ULP's icmp
2196 2197 * error handler.
2197 2198 */
2198 2199 if (mp->b_wptr - mp->b_rptr < IP_SIMPLE_HDR_LENGTH)
2199 2200 goto truncated;
2200 2201
2201 2202 /* Verify the modified message before any further processes. */
2202 2203 ipha = (ipha_t *)mp->b_rptr;
2203 2204 hdr_length = IPH_HDR_LENGTH(ipha);
2204 2205 icmph = (icmph_t *)&mp->b_rptr[hdr_length];
2205 2206 if (!icmp_inbound_verify_v4(mp, icmph, ira)) {
2206 2207 freemsg(mp);
2207 2208 return;
2208 2209 }
2209 2210
2210 2211 icmp_inbound_error_fanout_v4(mp, icmph, ira);
2211 2212 return;
2212 2213
2213 2214 case IPPROTO_ENCAP: {
2214 2215 /* Look for self-encapsulated packets that caused an error */
2215 2216 ipha_t *in_ipha;
2216 2217
2217 2218 /*
2218 2219 * Caller has verified that length has to be
2219 2220 * at least the size of IP header.
2220 2221 */
2221 2222 ASSERT(hdr_length >= sizeof (ipha_t));
2222 2223 /*
2223 2224 * Check the sanity of the inner IP header like
2224 2225 * we did for the outer header.
2225 2226 */
2226 2227 in_ipha = (ipha_t *)((uchar_t *)ipha + hdr_length);
2227 2228 if ((IPH_HDR_VERSION(in_ipha) != IPV4_VERSION)) {
2228 2229 goto discard_pkt;
2229 2230 }
2230 2231 if (IPH_HDR_LENGTH(in_ipha) < sizeof (ipha_t)) {
2231 2232 goto discard_pkt;
2232 2233 }
2233 2234 /* Check for Self-encapsulated tunnels */
2234 2235 if (in_ipha->ipha_src == ipha->ipha_src &&
2235 2236 in_ipha->ipha_dst == ipha->ipha_dst) {
2236 2237
2237 2238 mp = icmp_inbound_self_encap_error_v4(mp, ipha,
2238 2239 in_ipha);
2239 2240 if (mp == NULL)
2240 2241 goto discard_pkt;
2241 2242
2242 2243 /*
2243 2244 * Just in case self_encap didn't preserve the NULL
2244 2245 * b_cont
2245 2246 */
2246 2247 if (mp->b_cont != NULL) {
2247 2248 if (!pullupmsg(mp, -1))
2248 2249 goto discard_pkt;
2249 2250 }
2250 2251 /*
2251 2252 * Note that ira_pktlen and ira_ip_hdr_length are no
2252 2253 * longer correct, but we don't use them any more here.
2253 2254 */
2254 2255 if (mp->b_wptr - mp->b_rptr < IP_SIMPLE_HDR_LENGTH)
2255 2256 goto truncated;
2256 2257
2257 2258 /*
2258 2259 * Verify the modified message before any further
2259 2260 * processes.
2260 2261 */
2261 2262 ipha = (ipha_t *)mp->b_rptr;
2262 2263 hdr_length = IPH_HDR_LENGTH(ipha);
2263 2264 icmph = (icmph_t *)&mp->b_rptr[hdr_length];
2264 2265 if (!icmp_inbound_verify_v4(mp, icmph, ira)) {
2265 2266 freemsg(mp);
2266 2267 return;
2267 2268 }
2268 2269
2269 2270 /*
2270 2271 * The packet in error is self-encapsualted.
2271 2272 * And we are finding it further encapsulated
2272 2273 * which we could not have possibly generated.
2273 2274 */
2274 2275 if (ipha->ipha_protocol == IPPROTO_ENCAP) {
2275 2276 goto discard_pkt;
2276 2277 }
2277 2278 icmp_inbound_error_fanout_v4(mp, icmph, ira);
2278 2279 return;
2279 2280 }
2280 2281 /* No self-encapsulated */
2281 2282 }
2282 2283 /* FALLTHROUGH */
2283 2284 case IPPROTO_IPV6:
2284 2285 if ((connp = ipcl_iptun_classify_v4(&ripha.ipha_src,
2285 2286 &ripha.ipha_dst, ipst)) != NULL) {
2286 2287 ira->ira_flags |= IRAF_ICMP_ERROR;
2287 2288 connp->conn_recvicmp(connp, mp, NULL, ira);
2288 2289 CONN_DEC_REF(connp);
2289 2290 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2290 2291 return;
2291 2292 }
2292 2293 /*
2293 2294 * No IP tunnel is interested, fallthrough and see
2294 2295 * if a raw socket will want it.
2295 2296 */
2296 2297 /* FALLTHROUGH */
2297 2298 default:
2298 2299 ira->ira_flags |= IRAF_ICMP_ERROR;
2299 2300 ip_fanout_proto_v4(mp, &ripha, ira);
2300 2301 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2301 2302 return;
2302 2303 }
2303 2304 /* NOTREACHED */
2304 2305 discard_pkt:
2305 2306 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
2306 2307 ip1dbg(("icmp_inbound_error_fanout_v4: drop pkt\n"));
2307 2308 ip_drop_input("ipIfStatsInDiscards", mp, ill);
2308 2309 freemsg(mp);
2309 2310 return;
2310 2311
2311 2312 truncated:
2312 2313 /* We pulled up everthing already. Must be truncated */
2313 2314 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
2314 2315 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
2315 2316 freemsg(mp);
2316 2317 }
2317 2318
2318 2319 /*
2319 2320 * Common IP options parser.
2320 2321 *
2321 2322 * Setup routine: fill in *optp with options-parsing state, then
2322 2323 * tail-call ipoptp_next to return the first option.
2323 2324 */
2324 2325 uint8_t
2325 2326 ipoptp_first(ipoptp_t *optp, ipha_t *ipha)
2326 2327 {
2327 2328 uint32_t totallen; /* total length of all options */
2328 2329
2329 2330 totallen = ipha->ipha_version_and_hdr_length -
2330 2331 (uint8_t)((IP_VERSION << 4) + IP_SIMPLE_HDR_LENGTH_IN_WORDS);
2331 2332 totallen <<= 2;
2332 2333 optp->ipoptp_next = (uint8_t *)(&ipha[1]);
2333 2334 optp->ipoptp_end = optp->ipoptp_next + totallen;
2334 2335 optp->ipoptp_flags = 0;
2335 2336 return (ipoptp_next(optp));
2336 2337 }
2337 2338
2338 2339 /* Like above but without an ipha_t */
2339 2340 uint8_t
2340 2341 ipoptp_first2(ipoptp_t *optp, uint32_t totallen, uint8_t *opt)
2341 2342 {
2342 2343 optp->ipoptp_next = opt;
2343 2344 optp->ipoptp_end = optp->ipoptp_next + totallen;
2344 2345 optp->ipoptp_flags = 0;
2345 2346 return (ipoptp_next(optp));
2346 2347 }
2347 2348
2348 2349 /*
2349 2350 * Common IP options parser: extract next option.
2350 2351 */
2351 2352 uint8_t
2352 2353 ipoptp_next(ipoptp_t *optp)
2353 2354 {
2354 2355 uint8_t *end = optp->ipoptp_end;
2355 2356 uint8_t *cur = optp->ipoptp_next;
2356 2357 uint8_t opt, len, pointer;
2357 2358
2358 2359 /*
2359 2360 * If cur > end already, then the ipoptp_end or ipoptp_next pointer
2360 2361 * has been corrupted.
2361 2362 */
2362 2363 ASSERT(cur <= end);
2363 2364
2364 2365 if (cur == end)
2365 2366 return (IPOPT_EOL);
2366 2367
2367 2368 opt = cur[IPOPT_OPTVAL];
2368 2369
2369 2370 /*
2370 2371 * Skip any NOP options.
2371 2372 */
2372 2373 while (opt == IPOPT_NOP) {
2373 2374 cur++;
2374 2375 if (cur == end)
2375 2376 return (IPOPT_EOL);
2376 2377 opt = cur[IPOPT_OPTVAL];
2377 2378 }
2378 2379
2379 2380 if (opt == IPOPT_EOL)
2380 2381 return (IPOPT_EOL);
2381 2382
2382 2383 /*
2383 2384 * Option requiring a length.
2384 2385 */
2385 2386 if ((cur + 1) >= end) {
2386 2387 optp->ipoptp_flags |= IPOPTP_ERROR;
2387 2388 return (IPOPT_EOL);
2388 2389 }
2389 2390 len = cur[IPOPT_OLEN];
2390 2391 if (len < 2) {
2391 2392 optp->ipoptp_flags |= IPOPTP_ERROR;
2392 2393 return (IPOPT_EOL);
2393 2394 }
2394 2395 optp->ipoptp_cur = cur;
2395 2396 optp->ipoptp_len = len;
2396 2397 optp->ipoptp_next = cur + len;
2397 2398 if (cur + len > end) {
2398 2399 optp->ipoptp_flags |= IPOPTP_ERROR;
2399 2400 return (IPOPT_EOL);
2400 2401 }
2401 2402
2402 2403 /*
2403 2404 * For the options which require a pointer field, make sure
2404 2405 * its there, and make sure it points to either something
2405 2406 * inside this option, or the end of the option.
2406 2407 */
2407 2408 pointer = IPOPT_EOL;
2408 2409 switch (opt) {
2409 2410 case IPOPT_RR:
2410 2411 case IPOPT_TS:
2411 2412 case IPOPT_LSRR:
2412 2413 case IPOPT_SSRR:
2413 2414 if (len <= IPOPT_OFFSET) {
2414 2415 optp->ipoptp_flags |= IPOPTP_ERROR;
2415 2416 return (opt);
2416 2417 }
2417 2418 pointer = cur[IPOPT_OFFSET];
2418 2419 if (pointer - 1 > len) {
2419 2420 optp->ipoptp_flags |= IPOPTP_ERROR;
2420 2421 return (opt);
2421 2422 }
2422 2423 break;
2423 2424 }
2424 2425
2425 2426 /*
2426 2427 * Sanity check the pointer field based on the type of the
2427 2428 * option.
2428 2429 */
2429 2430 switch (opt) {
2430 2431 case IPOPT_RR:
2431 2432 case IPOPT_SSRR:
2432 2433 case IPOPT_LSRR:
2433 2434 if (pointer < IPOPT_MINOFF_SR)
2434 2435 optp->ipoptp_flags |= IPOPTP_ERROR;
2435 2436 break;
2436 2437 case IPOPT_TS:
2437 2438 if (pointer < IPOPT_MINOFF_IT)
2438 2439 optp->ipoptp_flags |= IPOPTP_ERROR;
2439 2440 /*
2440 2441 * Note that the Internet Timestamp option also
2441 2442 * contains two four bit fields (the Overflow field,
2442 2443 * and the Flag field), which follow the pointer
2443 2444 * field. We don't need to check that these fields
2444 2445 * fall within the length of the option because this
2445 2446 * was implicitely done above. We've checked that the
2446 2447 * pointer value is at least IPOPT_MINOFF_IT, and that
2447 2448 * it falls within the option. Since IPOPT_MINOFF_IT >
2448 2449 * IPOPT_POS_OV_FLG, we don't need the explicit check.
2449 2450 */
2450 2451 ASSERT(len > IPOPT_POS_OV_FLG);
2451 2452 break;
2452 2453 }
2453 2454
2454 2455 return (opt);
2455 2456 }
2456 2457
2457 2458 /*
2458 2459 * Use the outgoing IP header to create an IP_OPTIONS option the way
2459 2460 * it was passed down from the application.
2460 2461 *
2461 2462 * This is compatible with BSD in that it returns
2462 2463 * the reverse source route with the final destination
2463 2464 * as the last entry. The first 4 bytes of the option
2464 2465 * will contain the final destination.
2465 2466 */
2466 2467 int
2467 2468 ip_opt_get_user(conn_t *connp, uchar_t *buf)
2468 2469 {
2469 2470 ipoptp_t opts;
2470 2471 uchar_t *opt;
2471 2472 uint8_t optval;
2472 2473 uint8_t optlen;
2473 2474 uint32_t len = 0;
2474 2475 uchar_t *buf1 = buf;
2475 2476 uint32_t totallen;
2476 2477 ipaddr_t dst;
2477 2478 ip_pkt_t *ipp = &connp->conn_xmit_ipp;
2478 2479
2479 2480 if (!(ipp->ipp_fields & IPPF_IPV4_OPTIONS))
2480 2481 return (0);
2481 2482
2482 2483 totallen = ipp->ipp_ipv4_options_len;
2483 2484 if (totallen & 0x3)
2484 2485 return (0);
2485 2486
2486 2487 buf += IP_ADDR_LEN; /* Leave room for final destination */
2487 2488 len += IP_ADDR_LEN;
2488 2489 bzero(buf1, IP_ADDR_LEN);
2489 2490
2490 2491 dst = connp->conn_faddr_v4;
2491 2492
2492 2493 for (optval = ipoptp_first2(&opts, totallen, ipp->ipp_ipv4_options);
2493 2494 optval != IPOPT_EOL;
2494 2495 optval = ipoptp_next(&opts)) {
2495 2496 int off;
2496 2497
2497 2498 opt = opts.ipoptp_cur;
2498 2499 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
2499 2500 break;
2500 2501 }
2501 2502 optlen = opts.ipoptp_len;
2502 2503
2503 2504 switch (optval) {
2504 2505 case IPOPT_SSRR:
2505 2506 case IPOPT_LSRR:
2506 2507
2507 2508 /*
2508 2509 * Insert destination as the first entry in the source
2509 2510 * route and move down the entries on step.
2510 2511 * The last entry gets placed at buf1.
2511 2512 */
2512 2513 buf[IPOPT_OPTVAL] = optval;
2513 2514 buf[IPOPT_OLEN] = optlen;
2514 2515 buf[IPOPT_OFFSET] = optlen;
2515 2516
2516 2517 off = optlen - IP_ADDR_LEN;
2517 2518 if (off < 0) {
2518 2519 /* No entries in source route */
2519 2520 break;
2520 2521 }
2521 2522 /* Last entry in source route if not already set */
2522 2523 if (dst == INADDR_ANY)
2523 2524 bcopy(opt + off, buf1, IP_ADDR_LEN);
2524 2525 off -= IP_ADDR_LEN;
2525 2526
2526 2527 while (off > 0) {
2527 2528 bcopy(opt + off,
2528 2529 buf + off + IP_ADDR_LEN,
2529 2530 IP_ADDR_LEN);
2530 2531 off -= IP_ADDR_LEN;
2531 2532 }
2532 2533 /* ipha_dst into first slot */
2533 2534 bcopy(&dst, buf + off + IP_ADDR_LEN,
2534 2535 IP_ADDR_LEN);
2535 2536 buf += optlen;
2536 2537 len += optlen;
2537 2538 break;
2538 2539
2539 2540 default:
2540 2541 bcopy(opt, buf, optlen);
2541 2542 buf += optlen;
2542 2543 len += optlen;
2543 2544 break;
2544 2545 }
2545 2546 }
2546 2547 done:
2547 2548 /* Pad the resulting options */
2548 2549 while (len & 0x3) {
2549 2550 *buf++ = IPOPT_EOL;
2550 2551 len++;
2551 2552 }
2552 2553 return (len);
2553 2554 }
2554 2555
2555 2556 /*
2556 2557 * Update any record route or timestamp options to include this host.
2557 2558 * Reverse any source route option.
2558 2559 * This routine assumes that the options are well formed i.e. that they
2559 2560 * have already been checked.
2560 2561 */
2561 2562 static void
2562 2563 icmp_options_update(ipha_t *ipha)
2563 2564 {
2564 2565 ipoptp_t opts;
2565 2566 uchar_t *opt;
2566 2567 uint8_t optval;
2567 2568 ipaddr_t src; /* Our local address */
2568 2569 ipaddr_t dst;
2569 2570
2570 2571 ip2dbg(("icmp_options_update\n"));
2571 2572 src = ipha->ipha_src;
2572 2573 dst = ipha->ipha_dst;
2573 2574
2574 2575 for (optval = ipoptp_first(&opts, ipha);
2575 2576 optval != IPOPT_EOL;
2576 2577 optval = ipoptp_next(&opts)) {
2577 2578 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
2578 2579 opt = opts.ipoptp_cur;
2579 2580 ip2dbg(("icmp_options_update: opt %d, len %d\n",
2580 2581 optval, opts.ipoptp_len));
2581 2582 switch (optval) {
2582 2583 int off1, off2;
2583 2584 case IPOPT_SSRR:
2584 2585 case IPOPT_LSRR:
2585 2586 /*
2586 2587 * Reverse the source route. The first entry
2587 2588 * should be the next to last one in the current
2588 2589 * source route (the last entry is our address).
2589 2590 * The last entry should be the final destination.
2590 2591 */
2591 2592 off1 = IPOPT_MINOFF_SR - 1;
2592 2593 off2 = opt[IPOPT_OFFSET] - IP_ADDR_LEN - 1;
2593 2594 if (off2 < 0) {
2594 2595 /* No entries in source route */
2595 2596 ip1dbg((
2596 2597 "icmp_options_update: bad src route\n"));
2597 2598 break;
2598 2599 }
2599 2600 bcopy((char *)opt + off2, &dst, IP_ADDR_LEN);
2600 2601 bcopy(&ipha->ipha_dst, (char *)opt + off2, IP_ADDR_LEN);
2601 2602 bcopy(&dst, &ipha->ipha_dst, IP_ADDR_LEN);
2602 2603 off2 -= IP_ADDR_LEN;
2603 2604
2604 2605 while (off1 < off2) {
2605 2606 bcopy((char *)opt + off1, &src, IP_ADDR_LEN);
2606 2607 bcopy((char *)opt + off2, (char *)opt + off1,
2607 2608 IP_ADDR_LEN);
2608 2609 bcopy(&src, (char *)opt + off2, IP_ADDR_LEN);
2609 2610 off1 += IP_ADDR_LEN;
2610 2611 off2 -= IP_ADDR_LEN;
2611 2612 }
2612 2613 opt[IPOPT_OFFSET] = IPOPT_MINOFF_SR;
2613 2614 break;
2614 2615 }
2615 2616 }
2616 2617 }
2617 2618
2618 2619 /*
2619 2620 * Process received ICMP Redirect messages.
2620 2621 * Assumes the caller has verified that the headers are in the pulled up mblk.
2621 2622 * Consumes mp.
2622 2623 */
2623 2624 static void
2624 2625 icmp_redirect_v4(mblk_t *mp, ipha_t *ipha, icmph_t *icmph, ip_recv_attr_t *ira)
2625 2626 {
2626 2627 ire_t *ire, *nire;
2627 2628 ire_t *prev_ire;
2628 2629 ipaddr_t src, dst, gateway;
2629 2630 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2630 2631 ipha_t *inner_ipha; /* Inner IP header */
2631 2632
2632 2633 /* Caller already pulled up everything. */
2633 2634 inner_ipha = (ipha_t *)&icmph[1];
2634 2635 src = ipha->ipha_src;
2635 2636 dst = inner_ipha->ipha_dst;
2636 2637 gateway = icmph->icmph_rd_gateway;
2637 2638 /* Make sure the new gateway is reachable somehow. */
2638 2639 ire = ire_ftable_lookup_v4(gateway, 0, 0, IRE_ONLINK, NULL,
2639 2640 ALL_ZONES, NULL, MATCH_IRE_TYPE, 0, ipst, NULL);
2640 2641 /*
2641 2642 * Make sure we had a route for the dest in question and that
2642 2643 * that route was pointing to the old gateway (the source of the
2643 2644 * redirect packet.)
2644 2645 * We do longest match and then compare ire_gateway_addr below.
2645 2646 */
2646 2647 prev_ire = ire_ftable_lookup_v4(dst, 0, 0, 0, NULL, ALL_ZONES,
2647 2648 NULL, MATCH_IRE_DSTONLY, 0, ipst, NULL);
2648 2649 /*
2649 2650 * Check that
2650 2651 * the redirect was not from ourselves
2651 2652 * the new gateway and the old gateway are directly reachable
2652 2653 */
2653 2654 if (prev_ire == NULL || ire == NULL ||
2654 2655 (prev_ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK)) ||
2655 2656 (prev_ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE)) ||
2656 2657 !(ire->ire_type & IRE_IF_ALL) ||
2657 2658 prev_ire->ire_gateway_addr != src) {
2658 2659 BUMP_MIB(&ipst->ips_icmp_mib, icmpInBadRedirects);
2659 2660 ip_drop_input("icmpInBadRedirects - ire", mp, ira->ira_ill);
2660 2661 freemsg(mp);
2661 2662 if (ire != NULL)
2662 2663 ire_refrele(ire);
2663 2664 if (prev_ire != NULL)
2664 2665 ire_refrele(prev_ire);
2665 2666 return;
2666 2667 }
2667 2668
2668 2669 ire_refrele(prev_ire);
2669 2670 ire_refrele(ire);
2670 2671
2671 2672 /*
2672 2673 * TODO: more precise handling for cases 0, 2, 3, the latter two
2673 2674 * require TOS routing
2674 2675 */
2675 2676 switch (icmph->icmph_code) {
2676 2677 case 0:
2677 2678 case 1:
2678 2679 /* TODO: TOS specificity for cases 2 and 3 */
2679 2680 case 2:
2680 2681 case 3:
2681 2682 break;
2682 2683 default:
2683 2684 BUMP_MIB(&ipst->ips_icmp_mib, icmpInBadRedirects);
2684 2685 ip_drop_input("icmpInBadRedirects - code", mp, ira->ira_ill);
2685 2686 freemsg(mp);
2686 2687 return;
2687 2688 }
2688 2689 /*
2689 2690 * Create a Route Association. This will allow us to remember that
2690 2691 * someone we believe told us to use the particular gateway.
2691 2692 */
2692 2693 ire = ire_create(
2693 2694 (uchar_t *)&dst, /* dest addr */
2694 2695 (uchar_t *)&ip_g_all_ones, /* mask */
2695 2696 (uchar_t *)&gateway, /* gateway addr */
2696 2697 IRE_HOST,
2697 2698 NULL, /* ill */
2698 2699 ALL_ZONES,
2699 2700 (RTF_DYNAMIC | RTF_GATEWAY | RTF_HOST),
2700 2701 NULL, /* tsol_gc_t */
2701 2702 ipst);
2702 2703
2703 2704 if (ire == NULL) {
2704 2705 freemsg(mp);
2705 2706 return;
2706 2707 }
2707 2708 nire = ire_add(ire);
2708 2709 /* Check if it was a duplicate entry */
2709 2710 if (nire != NULL && nire != ire) {
2710 2711 ASSERT(nire->ire_identical_ref > 1);
2711 2712 ire_delete(nire);
2712 2713 ire_refrele(nire);
2713 2714 nire = NULL;
2714 2715 }
2715 2716 ire = nire;
2716 2717 if (ire != NULL) {
2717 2718 ire_refrele(ire); /* Held in ire_add */
2718 2719
2719 2720 /* tell routing sockets that we received a redirect */
2720 2721 ip_rts_change(RTM_REDIRECT, dst, gateway, IP_HOST_MASK, 0, src,
2721 2722 (RTF_DYNAMIC | RTF_GATEWAY | RTF_HOST), 0,
2722 2723 (RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_AUTHOR), ipst);
2723 2724 }
2724 2725
2725 2726 /*
2726 2727 * Delete any existing IRE_HOST type redirect ires for this destination.
2727 2728 * This together with the added IRE has the effect of
2728 2729 * modifying an existing redirect.
2729 2730 */
2730 2731 prev_ire = ire_ftable_lookup_v4(dst, 0, src, IRE_HOST, NULL,
2731 2732 ALL_ZONES, NULL, (MATCH_IRE_GW | MATCH_IRE_TYPE), 0, ipst, NULL);
2732 2733 if (prev_ire != NULL) {
2733 2734 if (prev_ire ->ire_flags & RTF_DYNAMIC)
2734 2735 ire_delete(prev_ire);
2735 2736 ire_refrele(prev_ire);
2736 2737 }
2737 2738
2738 2739 freemsg(mp);
2739 2740 }
2740 2741
2741 2742 /*
2742 2743 * Generate an ICMP parameter problem message.
2743 2744 * When called from ip_output side a minimal ip_recv_attr_t needs to be
2744 2745 * constructed by the caller.
2745 2746 */
2746 2747 static void
2747 2748 icmp_param_problem(mblk_t *mp, uint8_t ptr, ip_recv_attr_t *ira)
2748 2749 {
2749 2750 icmph_t icmph;
2750 2751 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2751 2752
2752 2753 mp = icmp_pkt_err_ok(mp, ira);
2753 2754 if (mp == NULL)
2754 2755 return;
2755 2756
2756 2757 bzero(&icmph, sizeof (icmph_t));
2757 2758 icmph.icmph_type = ICMP_PARAM_PROBLEM;
2758 2759 icmph.icmph_pp_ptr = ptr;
2759 2760 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutParmProbs);
2760 2761 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
2761 2762 }
2762 2763
2763 2764 /*
2764 2765 * Build and ship an IPv4 ICMP message using the packet data in mp, and
2765 2766 * the ICMP header pointed to by "stuff". (May be called as writer.)
2766 2767 * Note: assumes that icmp_pkt_err_ok has been called to verify that
2767 2768 * an icmp error packet can be sent.
2768 2769 * Assigns an appropriate source address to the packet. If ipha_dst is
2769 2770 * one of our addresses use it for source. Otherwise let ip_output_simple
2770 2771 * pick the source address.
2771 2772 */
2772 2773 static void
2773 2774 icmp_pkt(mblk_t *mp, void *stuff, size_t len, ip_recv_attr_t *ira)
2774 2775 {
2775 2776 ipaddr_t dst;
2776 2777 icmph_t *icmph;
2777 2778 ipha_t *ipha;
2778 2779 uint_t len_needed;
2779 2780 size_t msg_len;
2780 2781 mblk_t *mp1;
2781 2782 ipaddr_t src;
2782 2783 ire_t *ire;
2783 2784 ip_xmit_attr_t ixas;
2784 2785 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2785 2786
2786 2787 ipha = (ipha_t *)mp->b_rptr;
2787 2788
2788 2789 bzero(&ixas, sizeof (ixas));
2789 2790 ixas.ixa_flags = IXAF_BASIC_SIMPLE_V4;
2790 2791 ixas.ixa_zoneid = ira->ira_zoneid;
2791 2792 ixas.ixa_ifindex = 0;
2792 2793 ixas.ixa_ipst = ipst;
2793 2794 ixas.ixa_cred = kcred;
2794 2795 ixas.ixa_cpid = NOPID;
2795 2796 ixas.ixa_tsl = ira->ira_tsl; /* Behave as a multi-level responder */
2796 2797 ixas.ixa_multicast_ttl = IP_DEFAULT_MULTICAST_TTL;
2797 2798
2798 2799 if (ira->ira_flags & IRAF_IPSEC_SECURE) {
2799 2800 /*
2800 2801 * Apply IPsec based on how IPsec was applied to
2801 2802 * the packet that had the error.
2802 2803 *
2803 2804 * If it was an outbound packet that caused the ICMP
2804 2805 * error, then the caller will have setup the IRA
2805 2806 * appropriately.
2806 2807 */
2807 2808 if (!ipsec_in_to_out(ira, &ixas, mp, ipha, NULL)) {
2808 2809 BUMP_MIB(&ipst->ips_ip_mib, ipIfStatsOutDiscards);
2809 2810 /* Note: mp already consumed and ip_drop_packet done */
2810 2811 return;
2811 2812 }
2812 2813 } else {
2813 2814 /*
2814 2815 * This is in clear. The icmp message we are building
2815 2816 * here should go out in clear, independent of our policy.
2816 2817 */
2817 2818 ixas.ixa_flags |= IXAF_NO_IPSEC;
2818 2819 }
2819 2820
2820 2821 /* Remember our eventual destination */
2821 2822 dst = ipha->ipha_src;
2822 2823
2823 2824 /*
2824 2825 * If the packet was for one of our unicast addresses, make
2825 2826 * sure we respond with that as the source. Otherwise
2826 2827 * have ip_output_simple pick the source address.
2827 2828 */
2828 2829 ire = ire_ftable_lookup_v4(ipha->ipha_dst, 0, 0,
2829 2830 (IRE_LOCAL|IRE_LOOPBACK), NULL, ira->ira_zoneid, NULL,
2830 2831 MATCH_IRE_TYPE|MATCH_IRE_ZONEONLY, 0, ipst, NULL);
2831 2832 if (ire != NULL) {
2832 2833 ire_refrele(ire);
2833 2834 src = ipha->ipha_dst;
2834 2835 } else {
2835 2836 src = INADDR_ANY;
2836 2837 ixas.ixa_flags |= IXAF_SET_SOURCE;
2837 2838 }
2838 2839
2839 2840 /*
2840 2841 * Check if we can send back more then 8 bytes in addition to
2841 2842 * the IP header. We try to send 64 bytes of data and the internal
2842 2843 * header in the special cases of ipv4 encapsulated ipv4 or ipv6.
2843 2844 */
2844 2845 len_needed = IPH_HDR_LENGTH(ipha);
2845 2846 if (ipha->ipha_protocol == IPPROTO_ENCAP ||
2846 2847 ipha->ipha_protocol == IPPROTO_IPV6) {
2847 2848 if (!pullupmsg(mp, -1)) {
2848 2849 BUMP_MIB(&ipst->ips_ip_mib, ipIfStatsOutDiscards);
2849 2850 ip_drop_output("ipIfStatsOutDiscards", mp, NULL);
2850 2851 freemsg(mp);
2851 2852 return;
2852 2853 }
2853 2854 ipha = (ipha_t *)mp->b_rptr;
2854 2855
2855 2856 if (ipha->ipha_protocol == IPPROTO_ENCAP) {
2856 2857 len_needed += IPH_HDR_LENGTH(((uchar_t *)ipha +
2857 2858 len_needed));
2858 2859 } else {
2859 2860 ip6_t *ip6h = (ip6_t *)((uchar_t *)ipha + len_needed);
2860 2861
2861 2862 ASSERT(ipha->ipha_protocol == IPPROTO_IPV6);
2862 2863 len_needed += ip_hdr_length_v6(mp, ip6h);
2863 2864 }
2864 2865 }
2865 2866 len_needed += ipst->ips_ip_icmp_return;
2866 2867 msg_len = msgdsize(mp);
2867 2868 if (msg_len > len_needed) {
2868 2869 (void) adjmsg(mp, len_needed - msg_len);
2869 2870 msg_len = len_needed;
2870 2871 }
2871 2872 mp1 = allocb(sizeof (icmp_ipha) + len, BPRI_MED);
2872 2873 if (mp1 == NULL) {
2873 2874 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutErrors);
2874 2875 freemsg(mp);
2875 2876 return;
2876 2877 }
2877 2878 mp1->b_cont = mp;
2878 2879 mp = mp1;
2879 2880
2880 2881 /*
2881 2882 * Set IXAF_TRUSTED_ICMP so we can let the ICMP messages this
2882 2883 * node generates be accepted in peace by all on-host destinations.
2883 2884 * If we do NOT assume that all on-host destinations trust
2884 2885 * self-generated ICMP messages, then rework here, ip6.c, and spd.c.
2885 2886 * (Look for IXAF_TRUSTED_ICMP).
2886 2887 */
2887 2888 ixas.ixa_flags |= IXAF_TRUSTED_ICMP;
2888 2889
2889 2890 ipha = (ipha_t *)mp->b_rptr;
2890 2891 mp1->b_wptr = (uchar_t *)ipha + (sizeof (icmp_ipha) + len);
2891 2892 *ipha = icmp_ipha;
2892 2893 ipha->ipha_src = src;
2893 2894 ipha->ipha_dst = dst;
2894 2895 ipha->ipha_ttl = ipst->ips_ip_def_ttl;
2895 2896 msg_len += sizeof (icmp_ipha) + len;
2896 2897 if (msg_len > IP_MAXPACKET) {
2897 2898 (void) adjmsg(mp, IP_MAXPACKET - msg_len);
2898 2899 msg_len = IP_MAXPACKET;
2899 2900 }
2900 2901 ipha->ipha_length = htons((uint16_t)msg_len);
2901 2902 icmph = (icmph_t *)&ipha[1];
2902 2903 bcopy(stuff, icmph, len);
2903 2904 icmph->icmph_checksum = 0;
2904 2905 icmph->icmph_checksum = IP_CSUM(mp, (int32_t)sizeof (ipha_t), 0);
2905 2906 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutMsgs);
2906 2907
2907 2908 (void) ip_output_simple(mp, &ixas);
2908 2909 ixa_cleanup(&ixas);
2909 2910 }
2910 2911
2911 2912 /*
2912 2913 * Determine if an ICMP error packet can be sent given the rate limit.
2913 2914 * The limit consists of an average frequency (icmp_pkt_err_interval measured
2914 2915 * in milliseconds) and a burst size. Burst size number of packets can
2915 2916 * be sent arbitrarely closely spaced.
2916 2917 * The state is tracked using two variables to implement an approximate
2917 2918 * token bucket filter:
2918 2919 * icmp_pkt_err_last - lbolt value when the last burst started
2919 2920 * icmp_pkt_err_sent - number of packets sent in current burst
2920 2921 */
2921 2922 boolean_t
2922 2923 icmp_err_rate_limit(ip_stack_t *ipst)
2923 2924 {
2924 2925 clock_t now = TICK_TO_MSEC(ddi_get_lbolt());
2925 2926 uint_t refilled; /* Number of packets refilled in tbf since last */
2926 2927 /* Guard against changes by loading into local variable */
2927 2928 uint_t err_interval = ipst->ips_ip_icmp_err_interval;
2928 2929
2929 2930 if (err_interval == 0)
2930 2931 return (B_FALSE);
2931 2932
2932 2933 if (ipst->ips_icmp_pkt_err_last > now) {
2933 2934 /* 100HZ lbolt in ms for 32bit arch wraps every 49.7 days */
2934 2935 ipst->ips_icmp_pkt_err_last = 0;
2935 2936 ipst->ips_icmp_pkt_err_sent = 0;
2936 2937 }
2937 2938 /*
2938 2939 * If we are in a burst update the token bucket filter.
2939 2940 * Update the "last" time to be close to "now" but make sure
2940 2941 * we don't loose precision.
2941 2942 */
2942 2943 if (ipst->ips_icmp_pkt_err_sent != 0) {
2943 2944 refilled = (now - ipst->ips_icmp_pkt_err_last)/err_interval;
2944 2945 if (refilled > ipst->ips_icmp_pkt_err_sent) {
2945 2946 ipst->ips_icmp_pkt_err_sent = 0;
2946 2947 } else {
2947 2948 ipst->ips_icmp_pkt_err_sent -= refilled;
2948 2949 ipst->ips_icmp_pkt_err_last += refilled * err_interval;
2949 2950 }
2950 2951 }
2951 2952 if (ipst->ips_icmp_pkt_err_sent == 0) {
2952 2953 /* Start of new burst */
2953 2954 ipst->ips_icmp_pkt_err_last = now;
2954 2955 }
2955 2956 if (ipst->ips_icmp_pkt_err_sent < ipst->ips_ip_icmp_err_burst) {
2956 2957 ipst->ips_icmp_pkt_err_sent++;
2957 2958 ip1dbg(("icmp_err_rate_limit: %d sent in burst\n",
2958 2959 ipst->ips_icmp_pkt_err_sent));
2959 2960 return (B_FALSE);
2960 2961 }
2961 2962 ip1dbg(("icmp_err_rate_limit: dropped\n"));
2962 2963 return (B_TRUE);
2963 2964 }
2964 2965
2965 2966 /*
2966 2967 * Check if it is ok to send an IPv4 ICMP error packet in
2967 2968 * response to the IPv4 packet in mp.
2968 2969 * Free the message and return null if no
2969 2970 * ICMP error packet should be sent.
2970 2971 */
2971 2972 static mblk_t *
2972 2973 icmp_pkt_err_ok(mblk_t *mp, ip_recv_attr_t *ira)
2973 2974 {
2974 2975 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2975 2976 icmph_t *icmph;
2976 2977 ipha_t *ipha;
2977 2978 uint_t len_needed;
2978 2979
2979 2980 if (!mp)
2980 2981 return (NULL);
2981 2982 ipha = (ipha_t *)mp->b_rptr;
2982 2983 if (ip_csum_hdr(ipha)) {
2983 2984 BUMP_MIB(&ipst->ips_ip_mib, ipIfStatsInCksumErrs);
2984 2985 ip_drop_input("ipIfStatsInCksumErrs", mp, NULL);
2985 2986 freemsg(mp);
2986 2987 return (NULL);
2987 2988 }
2988 2989 if (ip_type_v4(ipha->ipha_dst, ipst) == IRE_BROADCAST ||
2989 2990 ip_type_v4(ipha->ipha_src, ipst) == IRE_BROADCAST ||
2990 2991 CLASSD(ipha->ipha_dst) ||
2991 2992 CLASSD(ipha->ipha_src) ||
2992 2993 (ntohs(ipha->ipha_fragment_offset_and_flags) & IPH_OFFSET)) {
2993 2994 /* Note: only errors to the fragment with offset 0 */
2994 2995 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
2995 2996 freemsg(mp);
2996 2997 return (NULL);
2997 2998 }
2998 2999 if (ipha->ipha_protocol == IPPROTO_ICMP) {
2999 3000 /*
3000 3001 * Check the ICMP type. RFC 1122 sez: don't send ICMP
3001 3002 * errors in response to any ICMP errors.
3002 3003 */
3003 3004 len_needed = IPH_HDR_LENGTH(ipha) + ICMPH_SIZE;
3004 3005 if (mp->b_wptr - mp->b_rptr < len_needed) {
3005 3006 if (!pullupmsg(mp, len_needed)) {
3006 3007 BUMP_MIB(&ipst->ips_icmp_mib, icmpInErrors);
3007 3008 freemsg(mp);
3008 3009 return (NULL);
3009 3010 }
3010 3011 ipha = (ipha_t *)mp->b_rptr;
3011 3012 }
3012 3013 icmph = (icmph_t *)
3013 3014 (&((char *)ipha)[IPH_HDR_LENGTH(ipha)]);
3014 3015 switch (icmph->icmph_type) {
3015 3016 case ICMP_DEST_UNREACHABLE:
3016 3017 case ICMP_SOURCE_QUENCH:
3017 3018 case ICMP_TIME_EXCEEDED:
3018 3019 case ICMP_PARAM_PROBLEM:
3019 3020 case ICMP_REDIRECT:
3020 3021 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
3021 3022 freemsg(mp);
3022 3023 return (NULL);
3023 3024 default:
3024 3025 break;
3025 3026 }
3026 3027 }
3027 3028 /*
3028 3029 * If this is a labeled system, then check to see if we're allowed to
3029 3030 * send a response to this particular sender. If not, then just drop.
3030 3031 */
3031 3032 if (is_system_labeled() && !tsol_can_reply_error(mp, ira)) {
3032 3033 ip2dbg(("icmp_pkt_err_ok: can't respond to packet\n"));
3033 3034 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
3034 3035 freemsg(mp);
3035 3036 return (NULL);
3036 3037 }
3037 3038 if (icmp_err_rate_limit(ipst)) {
3038 3039 /*
3039 3040 * Only send ICMP error packets every so often.
3040 3041 * This should be done on a per port/source basis,
3041 3042 * but for now this will suffice.
3042 3043 */
3043 3044 freemsg(mp);
3044 3045 return (NULL);
3045 3046 }
3046 3047 return (mp);
3047 3048 }
3048 3049
3049 3050 /*
3050 3051 * Called when a packet was sent out the same link that it arrived on.
3051 3052 * Check if it is ok to send a redirect and then send it.
3052 3053 */
3053 3054 void
3054 3055 ip_send_potential_redirect_v4(mblk_t *mp, ipha_t *ipha, ire_t *ire,
3055 3056 ip_recv_attr_t *ira)
3056 3057 {
3057 3058 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3058 3059 ipaddr_t src, nhop;
3059 3060 mblk_t *mp1;
3060 3061 ire_t *nhop_ire;
3061 3062
3062 3063 /*
3063 3064 * Check the source address to see if it originated
3064 3065 * on the same logical subnet it is going back out on.
3065 3066 * If so, we should be able to send it a redirect.
3066 3067 * Avoid sending a redirect if the destination
3067 3068 * is directly connected (i.e., we matched an IRE_ONLINK),
3068 3069 * or if the packet was source routed out this interface.
3069 3070 *
3070 3071 * We avoid sending a redirect if the
3071 3072 * destination is directly connected
3072 3073 * because it is possible that multiple
3073 3074 * IP subnets may have been configured on
3074 3075 * the link, and the source may not
3075 3076 * be on the same subnet as ip destination,
3076 3077 * even though they are on the same
3077 3078 * physical link.
3078 3079 */
3079 3080 if ((ire->ire_type & IRE_ONLINK) ||
3080 3081 ip_source_routed(ipha, ipst))
3081 3082 return;
3082 3083
3083 3084 nhop_ire = ire_nexthop(ire);
3084 3085 if (nhop_ire == NULL)
3085 3086 return;
3086 3087
3087 3088 nhop = nhop_ire->ire_addr;
3088 3089
3089 3090 if (nhop_ire->ire_type & IRE_IF_CLONE) {
3090 3091 ire_t *ire2;
3091 3092
3092 3093 /* Follow ire_dep_parent to find non-clone IRE_INTERFACE */
3093 3094 mutex_enter(&nhop_ire->ire_lock);
3094 3095 ire2 = nhop_ire->ire_dep_parent;
3095 3096 if (ire2 != NULL)
3096 3097 ire_refhold(ire2);
3097 3098 mutex_exit(&nhop_ire->ire_lock);
3098 3099 ire_refrele(nhop_ire);
3099 3100 nhop_ire = ire2;
3100 3101 }
3101 3102 if (nhop_ire == NULL)
3102 3103 return;
3103 3104
3104 3105 ASSERT(!(nhop_ire->ire_type & IRE_IF_CLONE));
3105 3106
3106 3107 src = ipha->ipha_src;
3107 3108
3108 3109 /*
3109 3110 * We look at the interface ire for the nexthop,
3110 3111 * to see if ipha_src is in the same subnet
3111 3112 * as the nexthop.
3112 3113 */
3113 3114 if ((src & nhop_ire->ire_mask) == (nhop & nhop_ire->ire_mask)) {
3114 3115 /*
3115 3116 * The source is directly connected.
3116 3117 */
3117 3118 mp1 = copymsg(mp);
3118 3119 if (mp1 != NULL) {
3119 3120 icmp_send_redirect(mp1, nhop, ira);
3120 3121 }
3121 3122 }
3122 3123 ire_refrele(nhop_ire);
3123 3124 }
3124 3125
3125 3126 /*
3126 3127 * Generate an ICMP redirect message.
3127 3128 */
3128 3129 static void
3129 3130 icmp_send_redirect(mblk_t *mp, ipaddr_t gateway, ip_recv_attr_t *ira)
3130 3131 {
3131 3132 icmph_t icmph;
3132 3133 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3133 3134
3134 3135 mp = icmp_pkt_err_ok(mp, ira);
3135 3136 if (mp == NULL)
3136 3137 return;
3137 3138
3138 3139 bzero(&icmph, sizeof (icmph_t));
3139 3140 icmph.icmph_type = ICMP_REDIRECT;
3140 3141 icmph.icmph_code = 1;
3141 3142 icmph.icmph_rd_gateway = gateway;
3142 3143 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutRedirects);
3143 3144 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
3144 3145 }
3145 3146
3146 3147 /*
3147 3148 * Generate an ICMP time exceeded message.
3148 3149 */
3149 3150 void
3150 3151 icmp_time_exceeded(mblk_t *mp, uint8_t code, ip_recv_attr_t *ira)
3151 3152 {
3152 3153 icmph_t icmph;
3153 3154 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3154 3155
3155 3156 mp = icmp_pkt_err_ok(mp, ira);
3156 3157 if (mp == NULL)
3157 3158 return;
3158 3159
3159 3160 bzero(&icmph, sizeof (icmph_t));
3160 3161 icmph.icmph_type = ICMP_TIME_EXCEEDED;
3161 3162 icmph.icmph_code = code;
3162 3163 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutTimeExcds);
3163 3164 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
3164 3165 }
3165 3166
3166 3167 /*
3167 3168 * Generate an ICMP unreachable message.
3168 3169 * When called from ip_output side a minimal ip_recv_attr_t needs to be
3169 3170 * constructed by the caller.
3170 3171 */
3171 3172 void
3172 3173 icmp_unreachable(mblk_t *mp, uint8_t code, ip_recv_attr_t *ira)
3173 3174 {
3174 3175 icmph_t icmph;
3175 3176 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3176 3177
3177 3178 mp = icmp_pkt_err_ok(mp, ira);
3178 3179 if (mp == NULL)
3179 3180 return;
3180 3181
3181 3182 bzero(&icmph, sizeof (icmph_t));
3182 3183 icmph.icmph_type = ICMP_DEST_UNREACHABLE;
3183 3184 icmph.icmph_code = code;
3184 3185 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDestUnreachs);
3185 3186 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
3186 3187 }
3187 3188
3188 3189 /*
3189 3190 * Latch in the IPsec state for a stream based the policy in the listener
3190 3191 * and the actions in the ip_recv_attr_t.
3191 3192 * Called directly from TCP and SCTP.
3192 3193 */
3193 3194 boolean_t
3194 3195 ip_ipsec_policy_inherit(conn_t *connp, conn_t *lconnp, ip_recv_attr_t *ira)
3195 3196 {
3196 3197 ASSERT(lconnp->conn_policy != NULL);
3197 3198 ASSERT(connp->conn_policy == NULL);
3198 3199
3199 3200 IPPH_REFHOLD(lconnp->conn_policy);
3200 3201 connp->conn_policy = lconnp->conn_policy;
3201 3202
3202 3203 if (ira->ira_ipsec_action != NULL) {
3203 3204 if (connp->conn_latch == NULL) {
3204 3205 connp->conn_latch = iplatch_create();
3205 3206 if (connp->conn_latch == NULL)
3206 3207 return (B_FALSE);
3207 3208 }
3208 3209 ipsec_latch_inbound(connp, ira);
3209 3210 }
3210 3211 return (B_TRUE);
3211 3212 }
3212 3213
3213 3214 /*
3214 3215 * Verify whether or not the IP address is a valid local address.
3215 3216 * Could be a unicast, including one for a down interface.
3216 3217 * If allow_mcbc then a multicast or broadcast address is also
3217 3218 * acceptable.
3218 3219 *
3219 3220 * In the case of a broadcast/multicast address, however, the
3220 3221 * upper protocol is expected to reset the src address
3221 3222 * to zero when we return IPVL_MCAST/IPVL_BCAST so that
3222 3223 * no packets are emitted with broadcast/multicast address as
3223 3224 * source address (that violates hosts requirements RFC 1122)
3224 3225 * The addresses valid for bind are:
3225 3226 * (1) - INADDR_ANY (0)
3226 3227 * (2) - IP address of an UP interface
3227 3228 * (3) - IP address of a DOWN interface
3228 3229 * (4) - valid local IP broadcast addresses. In this case
3229 3230 * the conn will only receive packets destined to
3230 3231 * the specified broadcast address.
3231 3232 * (5) - a multicast address. In this case
3232 3233 * the conn will only receive packets destined to
3233 3234 * the specified multicast address. Note: the
3234 3235 * application still has to issue an
3235 3236 * IP_ADD_MEMBERSHIP socket option.
3236 3237 *
3237 3238 * In all the above cases, the bound address must be valid in the current zone.
3238 3239 * When the address is loopback, multicast or broadcast, there might be many
3239 3240 * matching IREs so bind has to look up based on the zone.
3240 3241 */
3241 3242 ip_laddr_t
3242 3243 ip_laddr_verify_v4(ipaddr_t src_addr, zoneid_t zoneid,
3243 3244 ip_stack_t *ipst, boolean_t allow_mcbc)
3244 3245 {
3245 3246 ire_t *src_ire;
3246 3247
3247 3248 ASSERT(src_addr != INADDR_ANY);
3248 3249
3249 3250 src_ire = ire_ftable_lookup_v4(src_addr, 0, 0, 0,
3250 3251 NULL, zoneid, NULL, MATCH_IRE_ZONEONLY, 0, ipst, NULL);
3251 3252
3252 3253 /*
3253 3254 * If an address other than in6addr_any is requested,
3254 3255 * we verify that it is a valid address for bind
3255 3256 * Note: Following code is in if-else-if form for
3256 3257 * readability compared to a condition check.
3257 3258 */
3258 3259 if (src_ire != NULL && (src_ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK))) {
3259 3260 /*
3260 3261 * (2) Bind to address of local UP interface
3261 3262 */
3262 3263 ire_refrele(src_ire);
3263 3264 return (IPVL_UNICAST_UP);
3264 3265 } else if (src_ire != NULL && src_ire->ire_type & IRE_BROADCAST) {
3265 3266 /*
3266 3267 * (4) Bind to broadcast address
3267 3268 */
3268 3269 ire_refrele(src_ire);
3269 3270 if (allow_mcbc)
3270 3271 return (IPVL_BCAST);
3271 3272 else
3272 3273 return (IPVL_BAD);
3273 3274 } else if (CLASSD(src_addr)) {
3274 3275 /* (5) bind to multicast address. */
3275 3276 if (src_ire != NULL)
3276 3277 ire_refrele(src_ire);
3277 3278
3278 3279 if (allow_mcbc)
3279 3280 return (IPVL_MCAST);
3280 3281 else
3281 3282 return (IPVL_BAD);
3282 3283 } else {
3283 3284 ipif_t *ipif;
3284 3285
3285 3286 /*
3286 3287 * (3) Bind to address of local DOWN interface?
3287 3288 * (ipif_lookup_addr() looks up all interfaces
3288 3289 * but we do not get here for UP interfaces
3289 3290 * - case (2) above)
3290 3291 */
3291 3292 if (src_ire != NULL)
3292 3293 ire_refrele(src_ire);
3293 3294
3294 3295 ipif = ipif_lookup_addr(src_addr, NULL, zoneid, ipst);
3295 3296 if (ipif == NULL)
3296 3297 return (IPVL_BAD);
3297 3298
3298 3299 /* Not a useful source? */
3299 3300 if (ipif->ipif_flags & (IPIF_NOLOCAL | IPIF_ANYCAST)) {
3300 3301 ipif_refrele(ipif);
3301 3302 return (IPVL_BAD);
3302 3303 }
3303 3304 ipif_refrele(ipif);
3304 3305 return (IPVL_UNICAST_DOWN);
3305 3306 }
3306 3307 }
3307 3308
3308 3309 /*
3309 3310 * Insert in the bind fanout for IPv4 and IPv6.
3310 3311 * The caller should already have used ip_laddr_verify_v*() before calling
3311 3312 * this.
3312 3313 */
3313 3314 int
3314 3315 ip_laddr_fanout_insert(conn_t *connp)
3315 3316 {
3316 3317 int error;
3317 3318
3318 3319 /*
3319 3320 * Allow setting new policies. For example, disconnects result
3320 3321 * in us being called. As we would have set conn_policy_cached
3321 3322 * to B_TRUE before, we should set it to B_FALSE, so that policy
3322 3323 * can change after the disconnect.
3323 3324 */
3324 3325 connp->conn_policy_cached = B_FALSE;
3325 3326
3326 3327 error = ipcl_bind_insert(connp);
3327 3328 if (error != 0) {
3328 3329 if (connp->conn_anon_port) {
3329 3330 (void) tsol_mlp_anon(crgetzone(connp->conn_cred),
3330 3331 connp->conn_mlp_type, connp->conn_proto,
3331 3332 ntohs(connp->conn_lport), B_FALSE);
3332 3333 }
3333 3334 connp->conn_mlp_type = mlptSingle;
3334 3335 }
3335 3336 return (error);
3336 3337 }
3337 3338
3338 3339 /*
3339 3340 * Verify that both the source and destination addresses are valid. If
3340 3341 * IPDF_VERIFY_DST is not set, then the destination address may be unreachable,
3341 3342 * i.e. have no route to it. Protocols like TCP want to verify destination
3342 3343 * reachability, while tunnels do not.
3343 3344 *
3344 3345 * Determine the route, the interface, and (optionally) the source address
3345 3346 * to use to reach a given destination.
3346 3347 * Note that we allow connect to broadcast and multicast addresses when
3347 3348 * IPDF_ALLOW_MCBC is set.
3348 3349 * first_hop and dst_addr are normally the same, but if source routing
3349 3350 * they will differ; in that case the first_hop is what we'll use for the
3350 3351 * routing lookup but the dce and label checks will be done on dst_addr,
3351 3352 *
3352 3353 * If uinfo is set, then we fill in the best available information
3353 3354 * we have for the destination. This is based on (in priority order) any
3354 3355 * metrics and path MTU stored in a dce_t, route metrics, and finally the
3355 3356 * ill_mtu/ill_mc_mtu.
3356 3357 *
3357 3358 * Tsol note: If we have a source route then dst_addr != firsthop. But we
3358 3359 * always do the label check on dst_addr.
3359 3360 */
3360 3361 int
3361 3362 ip_set_destination_v4(ipaddr_t *src_addrp, ipaddr_t dst_addr, ipaddr_t firsthop,
3362 3363 ip_xmit_attr_t *ixa, iulp_t *uinfo, uint32_t flags, uint_t mac_mode)
3363 3364 {
3364 3365 ire_t *ire = NULL;
3365 3366 int error = 0;
3366 3367 ipaddr_t setsrc; /* RTF_SETSRC */
3367 3368 zoneid_t zoneid = ixa->ixa_zoneid; /* Honors SO_ALLZONES */
3368 3369 ip_stack_t *ipst = ixa->ixa_ipst;
3369 3370 dce_t *dce;
3370 3371 uint_t pmtu;
3371 3372 uint_t generation;
3372 3373 nce_t *nce;
3373 3374 ill_t *ill = NULL;
3374 3375 boolean_t multirt = B_FALSE;
3375 3376
3376 3377 ASSERT(ixa->ixa_flags & IXAF_IS_IPV4);
3377 3378
3378 3379 /*
3379 3380 * We never send to zero; the ULPs map it to the loopback address.
3380 3381 * We can't allow it since we use zero to mean unitialized in some
3381 3382 * places.
3382 3383 */
3383 3384 ASSERT(dst_addr != INADDR_ANY);
3384 3385
3385 3386 if (is_system_labeled()) {
3386 3387 ts_label_t *tsl = NULL;
3387 3388
3388 3389 error = tsol_check_dest(ixa->ixa_tsl, &dst_addr, IPV4_VERSION,
3389 3390 mac_mode, (flags & IPDF_ZONE_IS_GLOBAL) != 0, &tsl);
3390 3391 if (error != 0)
3391 3392 return (error);
3392 3393 if (tsl != NULL) {
3393 3394 /* Update the label */
3394 3395 ip_xmit_attr_replace_tsl(ixa, tsl);
3395 3396 }
3396 3397 }
3397 3398
3398 3399 setsrc = INADDR_ANY;
3399 3400 /*
3400 3401 * Select a route; For IPMP interfaces, we would only select
3401 3402 * a "hidden" route (i.e., going through a specific under_ill)
3402 3403 * if ixa_ifindex has been specified.
3403 3404 */
3404 3405 ire = ip_select_route_v4(firsthop, *src_addrp, ixa,
3405 3406 &generation, &setsrc, &error, &multirt);
3406 3407 ASSERT(ire != NULL); /* IRE_NOROUTE if none found */
3407 3408 if (error != 0)
3408 3409 goto bad_addr;
3409 3410
3410 3411 /*
3411 3412 * ire can't be a broadcast or multicast unless IPDF_ALLOW_MCBC is set.
3412 3413 * If IPDF_VERIFY_DST is set, the destination must be reachable;
3413 3414 * Otherwise the destination needn't be reachable.
3414 3415 *
3415 3416 * If we match on a reject or black hole, then we've got a
3416 3417 * local failure. May as well fail out the connect() attempt,
3417 3418 * since it's never going to succeed.
3418 3419 */
3419 3420 if (ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
3420 3421 /*
3421 3422 * If we're verifying destination reachability, we always want
3422 3423 * to complain here.
3423 3424 *
3424 3425 * If we're not verifying destination reachability but the
3425 3426 * destination has a route, we still want to fail on the
3426 3427 * temporary address and broadcast address tests.
3427 3428 *
3428 3429 * In both cases do we let the code continue so some reasonable
3429 3430 * information is returned to the caller. That enables the
3430 3431 * caller to use (and even cache) the IRE. conn_ip_ouput will
3431 3432 * use the generation mismatch path to check for the unreachable
3432 3433 * case thereby avoiding any specific check in the main path.
3433 3434 */
3434 3435 ASSERT(generation == IRE_GENERATION_VERIFY);
3435 3436 if (flags & IPDF_VERIFY_DST) {
3436 3437 /*
3437 3438 * Set errno but continue to set up ixa_ire to be
3438 3439 * the RTF_REJECT|RTF_BLACKHOLE IRE.
3439 3440 * That allows callers to use ip_output to get an
3440 3441 * ICMP error back.
3441 3442 */
3442 3443 if (!(ire->ire_type & IRE_HOST))
3443 3444 error = ENETUNREACH;
3444 3445 else
3445 3446 error = EHOSTUNREACH;
3446 3447 }
3447 3448 }
3448 3449
3449 3450 if ((ire->ire_type & (IRE_BROADCAST|IRE_MULTICAST)) &&
3450 3451 !(flags & IPDF_ALLOW_MCBC)) {
3451 3452 ire_refrele(ire);
3452 3453 ire = ire_reject(ipst, B_FALSE);
3453 3454 generation = IRE_GENERATION_VERIFY;
3454 3455 error = ENETUNREACH;
3455 3456 }
3456 3457
3457 3458 /* Cache things */
3458 3459 if (ixa->ixa_ire != NULL)
3459 3460 ire_refrele_notr(ixa->ixa_ire);
3460 3461 #ifdef DEBUG
3461 3462 ire_refhold_notr(ire);
3462 3463 ire_refrele(ire);
3463 3464 #endif
3464 3465 ixa->ixa_ire = ire;
3465 3466 ixa->ixa_ire_generation = generation;
3466 3467
3467 3468 /*
3468 3469 * Ensure that ixa_dce is always set any time that ixa_ire is set,
3469 3470 * since some callers will send a packet to conn_ip_output() even if
3470 3471 * there's an error.
3471 3472 */
3472 3473 if (flags & IPDF_UNIQUE_DCE) {
3473 3474 /* Fallback to the default dce if allocation fails */
3474 3475 dce = dce_lookup_and_add_v4(dst_addr, ipst);
3475 3476 if (dce != NULL)
3476 3477 generation = dce->dce_generation;
3477 3478 else
3478 3479 dce = dce_lookup_v4(dst_addr, ipst, &generation);
3479 3480 } else {
3480 3481 dce = dce_lookup_v4(dst_addr, ipst, &generation);
3481 3482 }
3482 3483 ASSERT(dce != NULL);
3483 3484 if (ixa->ixa_dce != NULL)
3484 3485 dce_refrele_notr(ixa->ixa_dce);
3485 3486 #ifdef DEBUG
3486 3487 dce_refhold_notr(dce);
3487 3488 dce_refrele(dce);
3488 3489 #endif
3489 3490 ixa->ixa_dce = dce;
3490 3491 ixa->ixa_dce_generation = generation;
3491 3492
3492 3493 /*
3493 3494 * For multicast with multirt we have a flag passed back from
3494 3495 * ire_lookup_multi_ill_v4 since we don't have an IRE for each
3495 3496 * possible multicast address.
3496 3497 * We also need a flag for multicast since we can't check
3497 3498 * whether RTF_MULTIRT is set in ixa_ire for multicast.
3498 3499 */
3499 3500 if (multirt) {
3500 3501 ixa->ixa_postfragfn = ip_postfrag_multirt_v4;
3501 3502 ixa->ixa_flags |= IXAF_MULTIRT_MULTICAST;
3502 3503 } else {
3503 3504 ixa->ixa_postfragfn = ire->ire_postfragfn;
3504 3505 ixa->ixa_flags &= ~IXAF_MULTIRT_MULTICAST;
3505 3506 }
3506 3507 if (!(ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))) {
3507 3508 /* Get an nce to cache. */
3508 3509 nce = ire_to_nce(ire, firsthop, NULL);
3509 3510 if (nce == NULL) {
3510 3511 /* Allocation failure? */
3511 3512 ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
3512 3513 } else {
3513 3514 if (ixa->ixa_nce != NULL)
3514 3515 nce_refrele(ixa->ixa_nce);
3515 3516 ixa->ixa_nce = nce;
3516 3517 }
3517 3518 }
3518 3519
3519 3520 /*
3520 3521 * If the source address is a loopback address, the
3521 3522 * destination had best be local or multicast.
3522 3523 * If we are sending to an IRE_LOCAL using a loopback source then
3523 3524 * it had better be the same zoneid.
3524 3525 */
3525 3526 if (*src_addrp == htonl(INADDR_LOOPBACK)) {
3526 3527 if ((ire->ire_type & IRE_LOCAL) && ire->ire_zoneid != zoneid) {
3527 3528 ire = NULL; /* Stored in ixa_ire */
3528 3529 error = EADDRNOTAVAIL;
3529 3530 goto bad_addr;
3530 3531 }
3531 3532 if (!(ire->ire_type & (IRE_LOOPBACK|IRE_LOCAL|IRE_MULTICAST))) {
3532 3533 ire = NULL; /* Stored in ixa_ire */
3533 3534 error = EADDRNOTAVAIL;
3534 3535 goto bad_addr;
3535 3536 }
3536 3537 }
3537 3538 if (ire->ire_type & IRE_BROADCAST) {
3538 3539 /*
3539 3540 * If the ULP didn't have a specified source, then we
3540 3541 * make sure we reselect the source when sending
3541 3542 * broadcasts out different interfaces.
3542 3543 */
3543 3544 if (flags & IPDF_SELECT_SRC)
3544 3545 ixa->ixa_flags |= IXAF_SET_SOURCE;
3545 3546 else
3546 3547 ixa->ixa_flags &= ~IXAF_SET_SOURCE;
3547 3548 }
3548 3549
3549 3550 /*
3550 3551 * Does the caller want us to pick a source address?
3551 3552 */
3552 3553 if (flags & IPDF_SELECT_SRC) {
3553 3554 ipaddr_t src_addr;
3554 3555
3555 3556 /*
3556 3557 * We use use ire_nexthop_ill to avoid the under ipmp
3557 3558 * interface for source address selection. Note that for ipmp
3558 3559 * probe packets, ixa_ifindex would have been specified, and
3559 3560 * the ip_select_route() invocation would have picked an ire
3560 3561 * will ire_ill pointing at an under interface.
3561 3562 */
3562 3563 ill = ire_nexthop_ill(ire);
3563 3564
3564 3565 /* If unreachable we have no ill but need some source */
3565 3566 if (ill == NULL) {
3566 3567 src_addr = htonl(INADDR_LOOPBACK);
3567 3568 /* Make sure we look for a better source address */
3568 3569 generation = SRC_GENERATION_VERIFY;
3569 3570 } else {
3570 3571 error = ip_select_source_v4(ill, setsrc, dst_addr,
3571 3572 ixa->ixa_multicast_ifaddr, zoneid,
3572 3573 ipst, &src_addr, &generation, NULL);
3573 3574 if (error != 0) {
3574 3575 ire = NULL; /* Stored in ixa_ire */
3575 3576 goto bad_addr;
3576 3577 }
3577 3578 }
3578 3579
3579 3580 /*
3580 3581 * We allow the source address to to down.
3581 3582 * However, we check that we don't use the loopback address
3582 3583 * as a source when sending out on the wire.
3583 3584 */
3584 3585 if ((src_addr == htonl(INADDR_LOOPBACK)) &&
3585 3586 !(ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK|IRE_MULTICAST)) &&
3586 3587 !(ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))) {
3587 3588 ire = NULL; /* Stored in ixa_ire */
3588 3589 error = EADDRNOTAVAIL;
3589 3590 goto bad_addr;
3590 3591 }
3591 3592
3592 3593 *src_addrp = src_addr;
3593 3594 ixa->ixa_src_generation = generation;
3594 3595 }
3595 3596
3596 3597 /*
3597 3598 * Make sure we don't leave an unreachable ixa_nce in place
3598 3599 * since ip_select_route is used when we unplumb i.e., remove
3599 3600 * references on ixa_ire, ixa_nce, and ixa_dce.
3600 3601 */
3601 3602 nce = ixa->ixa_nce;
3602 3603 if (nce != NULL && nce->nce_is_condemned) {
3603 3604 nce_refrele(nce);
3604 3605 ixa->ixa_nce = NULL;
3605 3606 ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
3606 3607 }
3607 3608
3608 3609 /*
3609 3610 * The caller has set IXAF_PMTU_DISCOVERY if path MTU is desired.
3610 3611 * However, we can't do it for IPv4 multicast or broadcast.
3611 3612 */
3612 3613 if (ire->ire_type & (IRE_BROADCAST|IRE_MULTICAST))
3613 3614 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY;
3614 3615
3615 3616 /*
3616 3617 * Set initial value for fragmentation limit. Either conn_ip_output
3617 3618 * or ULP might updates it when there are routing changes.
3618 3619 * Handles a NULL ixa_ire->ire_ill or a NULL ixa_nce for RTF_REJECT.
3619 3620 */
3620 3621 pmtu = ip_get_pmtu(ixa);
3621 3622 ixa->ixa_fragsize = pmtu;
3622 3623 /* Make sure ixa_fragsize and ixa_pmtu remain identical */
3623 3624 if (ixa->ixa_flags & IXAF_VERIFY_PMTU)
3624 3625 ixa->ixa_pmtu = pmtu;
3625 3626
3626 3627 /*
3627 3628 * Extract information useful for some transports.
3628 3629 * First we look for DCE metrics. Then we take what we have in
3629 3630 * the metrics in the route, where the offlink is used if we have
3630 3631 * one.
3631 3632 */
3632 3633 if (uinfo != NULL) {
3633 3634 bzero(uinfo, sizeof (*uinfo));
3634 3635
3635 3636 if (dce->dce_flags & DCEF_UINFO)
3636 3637 *uinfo = dce->dce_uinfo;
3637 3638
3638 3639 rts_merge_metrics(uinfo, &ire->ire_metrics);
3639 3640
3640 3641 /* Allow ire_metrics to decrease the path MTU from above */
3641 3642 if (uinfo->iulp_mtu == 0 || uinfo->iulp_mtu > pmtu)
3642 3643 uinfo->iulp_mtu = pmtu;
3643 3644
3644 3645 uinfo->iulp_localnet = (ire->ire_type & IRE_ONLINK) != 0;
3645 3646 uinfo->iulp_loopback = (ire->ire_type & IRE_LOOPBACK) != 0;
3646 3647 uinfo->iulp_local = (ire->ire_type & IRE_LOCAL) != 0;
3647 3648 }
3648 3649
3649 3650 if (ill != NULL)
3650 3651 ill_refrele(ill);
3651 3652
3652 3653 return (error);
3653 3654
3654 3655 bad_addr:
3655 3656 if (ire != NULL)
3656 3657 ire_refrele(ire);
3657 3658
3658 3659 if (ill != NULL)
3659 3660 ill_refrele(ill);
3660 3661
3661 3662 /*
3662 3663 * Make sure we don't leave an unreachable ixa_nce in place
3663 3664 * since ip_select_route is used when we unplumb i.e., remove
3664 3665 * references on ixa_ire, ixa_nce, and ixa_dce.
3665 3666 */
3666 3667 nce = ixa->ixa_nce;
3667 3668 if (nce != NULL && nce->nce_is_condemned) {
3668 3669 nce_refrele(nce);
3669 3670 ixa->ixa_nce = NULL;
3670 3671 ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
3671 3672 }
3672 3673
3673 3674 return (error);
3674 3675 }
3675 3676
3676 3677
3677 3678 /*
3678 3679 * Get the base MTU for the case when path MTU discovery is not used.
3679 3680 * Takes the MTU of the IRE into account.
3680 3681 */
3681 3682 uint_t
3682 3683 ip_get_base_mtu(ill_t *ill, ire_t *ire)
3683 3684 {
3684 3685 uint_t mtu;
3685 3686 uint_t iremtu = ire->ire_metrics.iulp_mtu;
3686 3687
3687 3688 if (ire->ire_type & (IRE_MULTICAST|IRE_BROADCAST))
3688 3689 mtu = ill->ill_mc_mtu;
3689 3690 else
3690 3691 mtu = ill->ill_mtu;
3691 3692
3692 3693 if (iremtu != 0 && iremtu < mtu)
3693 3694 mtu = iremtu;
3694 3695
3695 3696 return (mtu);
3696 3697 }
3697 3698
3698 3699 /*
3699 3700 * Get the PMTU for the attributes. Handles both IPv4 and IPv6.
3700 3701 * Assumes that ixa_ire, dce, and nce have already been set up.
3701 3702 *
3702 3703 * The caller has set IXAF_PMTU_DISCOVERY if path MTU discovery is desired.
3703 3704 * We avoid path MTU discovery if it is disabled with ndd.
3704 3705 * Furtermore, if the path MTU is too small, then we don't set DF for IPv4.
3705 3706 *
3706 3707 * NOTE: We also used to turn it off for source routed packets. That
3707 3708 * is no longer required since the dce is per final destination.
3708 3709 */
3709 3710 uint_t
3710 3711 ip_get_pmtu(ip_xmit_attr_t *ixa)
3711 3712 {
3712 3713 ip_stack_t *ipst = ixa->ixa_ipst;
3713 3714 dce_t *dce;
3714 3715 nce_t *nce;
3715 3716 ire_t *ire;
3716 3717 uint_t pmtu;
3717 3718
3718 3719 ire = ixa->ixa_ire;
3719 3720 dce = ixa->ixa_dce;
3720 3721 nce = ixa->ixa_nce;
3721 3722
3722 3723 /*
3723 3724 * If path MTU discovery has been turned off by ndd, then we ignore
3724 3725 * any dce_pmtu and for IPv4 we will not set DF.
3725 3726 */
3726 3727 if (!ipst->ips_ip_path_mtu_discovery)
3727 3728 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY;
3728 3729
3729 3730 pmtu = IP_MAXPACKET;
3730 3731 /*
3731 3732 * Decide whether whether IPv4 sets DF
3732 3733 * For IPv6 "no DF" means to use the 1280 mtu
3733 3734 */
3734 3735 if (ixa->ixa_flags & IXAF_PMTU_DISCOVERY) {
3735 3736 ixa->ixa_flags |= IXAF_PMTU_IPV4_DF;
3736 3737 } else {
3737 3738 ixa->ixa_flags &= ~IXAF_PMTU_IPV4_DF;
3738 3739 if (!(ixa->ixa_flags & IXAF_IS_IPV4))
3739 3740 pmtu = IPV6_MIN_MTU;
3740 3741 }
3741 3742
3742 3743 /* Check if the PMTU is to old before we use it */
3743 3744 if ((dce->dce_flags & DCEF_PMTU) &&
3744 3745 TICK_TO_SEC(ddi_get_lbolt64()) - dce->dce_last_change_time >
3745 3746 ipst->ips_ip_pathmtu_interval) {
3746 3747 /*
3747 3748 * Older than 20 minutes. Drop the path MTU information.
3748 3749 */
3749 3750 mutex_enter(&dce->dce_lock);
3750 3751 dce->dce_flags &= ~(DCEF_PMTU|DCEF_TOO_SMALL_PMTU);
3751 3752 dce->dce_last_change_time = TICK_TO_SEC(ddi_get_lbolt64());
3752 3753 mutex_exit(&dce->dce_lock);
3753 3754 dce_increment_generation(dce);
3754 3755 }
3755 3756
3756 3757 /* The metrics on the route can lower the path MTU */
3757 3758 if (ire->ire_metrics.iulp_mtu != 0 &&
3758 3759 ire->ire_metrics.iulp_mtu < pmtu)
3759 3760 pmtu = ire->ire_metrics.iulp_mtu;
3760 3761
3761 3762 /*
3762 3763 * If the path MTU is smaller than some minimum, we still use dce_pmtu
3763 3764 * above (would be 576 for IPv4 and 1280 for IPv6), but we clear
3764 3765 * IXAF_PMTU_IPV4_DF so that we avoid setting DF for IPv4.
3765 3766 */
3766 3767 if (ixa->ixa_flags & IXAF_PMTU_DISCOVERY) {
3767 3768 if (dce->dce_flags & DCEF_PMTU) {
3768 3769 if (dce->dce_pmtu < pmtu)
3769 3770 pmtu = dce->dce_pmtu;
3770 3771
3771 3772 if (dce->dce_flags & DCEF_TOO_SMALL_PMTU) {
3772 3773 ixa->ixa_flags |= IXAF_PMTU_TOO_SMALL;
3773 3774 ixa->ixa_flags &= ~IXAF_PMTU_IPV4_DF;
3774 3775 } else {
3775 3776 ixa->ixa_flags &= ~IXAF_PMTU_TOO_SMALL;
3776 3777 ixa->ixa_flags |= IXAF_PMTU_IPV4_DF;
3777 3778 }
3778 3779 } else {
3779 3780 ixa->ixa_flags &= ~IXAF_PMTU_TOO_SMALL;
3780 3781 ixa->ixa_flags |= IXAF_PMTU_IPV4_DF;
3781 3782 }
3782 3783 }
3783 3784
3784 3785 /*
3785 3786 * If we have an IRE_LOCAL we use the loopback mtu instead of
3786 3787 * the ill for going out the wire i.e., IRE_LOCAL gets the same
3787 3788 * mtu as IRE_LOOPBACK.
3788 3789 */
3789 3790 if (ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK)) {
3790 3791 uint_t loopback_mtu;
3791 3792
3792 3793 loopback_mtu = (ire->ire_ipversion == IPV6_VERSION) ?
3793 3794 ip_loopback_mtu_v6plus : ip_loopback_mtuplus;
3794 3795
3795 3796 if (loopback_mtu < pmtu)
3796 3797 pmtu = loopback_mtu;
3797 3798 } else if (nce != NULL) {
3798 3799 /*
3799 3800 * Make sure we don't exceed the interface MTU.
3800 3801 * In the case of RTF_REJECT or RTF_BLACKHOLE we might not have
3801 3802 * an ill. We'd use the above IP_MAXPACKET in that case just
3802 3803 * to tell the transport something larger than zero.
3803 3804 */
3804 3805 if (ire->ire_type & (IRE_MULTICAST|IRE_BROADCAST)) {
3805 3806 if (nce->nce_common->ncec_ill->ill_mc_mtu < pmtu)
3806 3807 pmtu = nce->nce_common->ncec_ill->ill_mc_mtu;
3807 3808 if (nce->nce_common->ncec_ill != nce->nce_ill &&
3808 3809 nce->nce_ill->ill_mc_mtu < pmtu) {
3809 3810 /*
3810 3811 * for interfaces in an IPMP group, the mtu of
3811 3812 * the nce_ill (under_ill) could be different
3812 3813 * from the mtu of the ncec_ill, so we take the
3813 3814 * min of the two.
3814 3815 */
3815 3816 pmtu = nce->nce_ill->ill_mc_mtu;
3816 3817 }
3817 3818 } else {
3818 3819 if (nce->nce_common->ncec_ill->ill_mtu < pmtu)
3819 3820 pmtu = nce->nce_common->ncec_ill->ill_mtu;
3820 3821 if (nce->nce_common->ncec_ill != nce->nce_ill &&
3821 3822 nce->nce_ill->ill_mtu < pmtu) {
3822 3823 /*
3823 3824 * for interfaces in an IPMP group, the mtu of
3824 3825 * the nce_ill (under_ill) could be different
3825 3826 * from the mtu of the ncec_ill, so we take the
3826 3827 * min of the two.
3827 3828 */
3828 3829 pmtu = nce->nce_ill->ill_mtu;
3829 3830 }
3830 3831 }
3831 3832 }
3832 3833
3833 3834 /*
3834 3835 * Handle the IPV6_USE_MIN_MTU socket option or ancillary data.
3835 3836 * Only applies to IPv6.
3836 3837 */
3837 3838 if (!(ixa->ixa_flags & IXAF_IS_IPV4)) {
3838 3839 if (ixa->ixa_flags & IXAF_USE_MIN_MTU) {
3839 3840 switch (ixa->ixa_use_min_mtu) {
3840 3841 case IPV6_USE_MIN_MTU_MULTICAST:
3841 3842 if (ire->ire_type & IRE_MULTICAST)
3842 3843 pmtu = IPV6_MIN_MTU;
3843 3844 break;
3844 3845 case IPV6_USE_MIN_MTU_ALWAYS:
3845 3846 pmtu = IPV6_MIN_MTU;
3846 3847 break;
3847 3848 case IPV6_USE_MIN_MTU_NEVER:
3848 3849 break;
3849 3850 }
3850 3851 } else {
3851 3852 /* Default is IPV6_USE_MIN_MTU_MULTICAST */
3852 3853 if (ire->ire_type & IRE_MULTICAST)
3853 3854 pmtu = IPV6_MIN_MTU;
3854 3855 }
3855 3856 }
3856 3857
3857 3858 /*
3858 3859 * For multirouted IPv6 packets, the IP layer will insert a 8-byte
3859 3860 * fragment header in every packet. We compensate for those cases by
3860 3861 * returning a smaller path MTU to the ULP.
3861 3862 *
3862 3863 * In the case of CGTP then ip_output will add a fragment header.
3863 3864 * Make sure there is room for it by telling a smaller number
3864 3865 * to the transport.
3865 3866 *
3866 3867 * When IXAF_IPV6_ADDR_FRAGHDR we subtract the frag hdr here
3867 3868 * so the ULPs consistently see a iulp_pmtu and ip_get_pmtu()
3868 3869 * which is the size of the packets it can send.
3869 3870 */
3870 3871 if (!(ixa->ixa_flags & IXAF_IS_IPV4)) {
3871 3872 if ((ire->ire_flags & RTF_MULTIRT) ||
3872 3873 (ixa->ixa_flags & IXAF_MULTIRT_MULTICAST)) {
3873 3874 pmtu -= sizeof (ip6_frag_t);
3874 3875 ixa->ixa_flags |= IXAF_IPV6_ADD_FRAGHDR;
3875 3876 }
3876 3877 }
3877 3878
3878 3879 return (pmtu);
3879 3880 }
3880 3881
3881 3882 /*
3882 3883 * Carve "len" bytes out of an mblk chain, consuming any we empty, and duping
3883 3884 * the final piece where we don't. Return a pointer to the first mblk in the
3884 3885 * result, and update the pointer to the next mblk to chew on. If anything
3885 3886 * goes wrong (i.e., dupb fails), we waste everything in sight and return a
3886 3887 * NULL pointer.
3887 3888 */
3888 3889 mblk_t *
3889 3890 ip_carve_mp(mblk_t **mpp, ssize_t len)
3890 3891 {
3891 3892 mblk_t *mp0;
3892 3893 mblk_t *mp1;
3893 3894 mblk_t *mp2;
3894 3895
3895 3896 if (!len || !mpp || !(mp0 = *mpp))
3896 3897 return (NULL);
3897 3898 /* If we aren't going to consume the first mblk, we need a dup. */
3898 3899 if (mp0->b_wptr - mp0->b_rptr > len) {
3899 3900 mp1 = dupb(mp0);
3900 3901 if (mp1) {
3901 3902 /* Partition the data between the two mblks. */
3902 3903 mp1->b_wptr = mp1->b_rptr + len;
3903 3904 mp0->b_rptr = mp1->b_wptr;
3904 3905 /*
3905 3906 * after adjustments if mblk not consumed is now
3906 3907 * unaligned, try to align it. If this fails free
3907 3908 * all messages and let upper layer recover.
3908 3909 */
3909 3910 if (!OK_32PTR(mp0->b_rptr)) {
3910 3911 if (!pullupmsg(mp0, -1)) {
3911 3912 freemsg(mp0);
3912 3913 freemsg(mp1);
3913 3914 *mpp = NULL;
3914 3915 return (NULL);
3915 3916 }
3916 3917 }
3917 3918 }
3918 3919 return (mp1);
3919 3920 }
3920 3921 /* Eat through as many mblks as we need to get len bytes. */
3921 3922 len -= mp0->b_wptr - mp0->b_rptr;
3922 3923 for (mp2 = mp1 = mp0; (mp2 = mp2->b_cont) != 0 && len; mp1 = mp2) {
3923 3924 if (mp2->b_wptr - mp2->b_rptr > len) {
3924 3925 /*
3925 3926 * We won't consume the entire last mblk. Like
3926 3927 * above, dup and partition it.
3927 3928 */
3928 3929 mp1->b_cont = dupb(mp2);
3929 3930 mp1 = mp1->b_cont;
3930 3931 if (!mp1) {
3931 3932 /*
3932 3933 * Trouble. Rather than go to a lot of
3933 3934 * trouble to clean up, we free the messages.
3934 3935 * This won't be any worse than losing it on
3935 3936 * the wire.
3936 3937 */
3937 3938 freemsg(mp0);
3938 3939 freemsg(mp2);
3939 3940 *mpp = NULL;
3940 3941 return (NULL);
3941 3942 }
3942 3943 mp1->b_wptr = mp1->b_rptr + len;
3943 3944 mp2->b_rptr = mp1->b_wptr;
3944 3945 /*
3945 3946 * after adjustments if mblk not consumed is now
3946 3947 * unaligned, try to align it. If this fails free
3947 3948 * all messages and let upper layer recover.
3948 3949 */
3949 3950 if (!OK_32PTR(mp2->b_rptr)) {
3950 3951 if (!pullupmsg(mp2, -1)) {
3951 3952 freemsg(mp0);
3952 3953 freemsg(mp2);
3953 3954 *mpp = NULL;
3954 3955 return (NULL);
3955 3956 }
3956 3957 }
3957 3958 *mpp = mp2;
3958 3959 return (mp0);
3959 3960 }
3960 3961 /* Decrement len by the amount we just got. */
3961 3962 len -= mp2->b_wptr - mp2->b_rptr;
3962 3963 }
3963 3964 /*
3964 3965 * len should be reduced to zero now. If not our caller has
3965 3966 * screwed up.
3966 3967 */
3967 3968 if (len) {
3968 3969 /* Shouldn't happen! */
3969 3970 freemsg(mp0);
3970 3971 *mpp = NULL;
3971 3972 return (NULL);
3972 3973 }
3973 3974 /*
3974 3975 * We consumed up to exactly the end of an mblk. Detach the part
3975 3976 * we are returning from the rest of the chain.
3976 3977 */
3977 3978 mp1->b_cont = NULL;
3978 3979 *mpp = mp2;
3979 3980 return (mp0);
3980 3981 }
3981 3982
3982 3983 /* The ill stream is being unplumbed. Called from ip_close */
3983 3984 int
3984 3985 ip_modclose(ill_t *ill)
3985 3986 {
3986 3987 boolean_t success;
3987 3988 ipsq_t *ipsq;
3988 3989 ipif_t *ipif;
3989 3990 queue_t *q = ill->ill_rq;
3990 3991 ip_stack_t *ipst = ill->ill_ipst;
3991 3992 int i;
3992 3993 arl_ill_common_t *ai = ill->ill_common;
3993 3994
3994 3995 /*
3995 3996 * The punlink prior to this may have initiated a capability
3996 3997 * negotiation. But ipsq_enter will block until that finishes or
3997 3998 * times out.
3998 3999 */
3999 4000 success = ipsq_enter(ill, B_FALSE, NEW_OP);
4000 4001
4001 4002 /*
4002 4003 * Open/close/push/pop is guaranteed to be single threaded
4003 4004 * per stream by STREAMS. FS guarantees that all references
4004 4005 * from top are gone before close is called. So there can't
4005 4006 * be another close thread that has set CONDEMNED on this ill.
4006 4007 * and cause ipsq_enter to return failure.
4007 4008 */
4008 4009 ASSERT(success);
4009 4010 ipsq = ill->ill_phyint->phyint_ipsq;
4010 4011
4011 4012 /*
4012 4013 * Mark it condemned. No new reference will be made to this ill.
4013 4014 * Lookup functions will return an error. Threads that try to
4014 4015 * increment the refcnt must check for ILL_CAN_LOOKUP. This ensures
4015 4016 * that the refcnt will drop down to zero.
4016 4017 */
4017 4018 mutex_enter(&ill->ill_lock);
4018 4019 ill->ill_state_flags |= ILL_CONDEMNED;
4019 4020 for (ipif = ill->ill_ipif; ipif != NULL;
4020 4021 ipif = ipif->ipif_next) {
4021 4022 ipif->ipif_state_flags |= IPIF_CONDEMNED;
4022 4023 }
4023 4024 /*
4024 4025 * Wake up anybody waiting to enter the ipsq. ipsq_enter
4025 4026 * returns error if ILL_CONDEMNED is set
4026 4027 */
4027 4028 cv_broadcast(&ill->ill_cv);
4028 4029 mutex_exit(&ill->ill_lock);
4029 4030
4030 4031 /*
4031 4032 * Send all the deferred DLPI messages downstream which came in
4032 4033 * during the small window right before ipsq_enter(). We do this
4033 4034 * without waiting for the ACKs because all the ACKs for M_PROTO
4034 4035 * messages are ignored in ip_rput() when ILL_CONDEMNED is set.
4035 4036 */
4036 4037 ill_dlpi_send_deferred(ill);
4037 4038
4038 4039 /*
4039 4040 * Shut down fragmentation reassembly.
4040 4041 * ill_frag_timer won't start a timer again.
4041 4042 * Now cancel any existing timer
4042 4043 */
4043 4044 (void) untimeout(ill->ill_frag_timer_id);
4044 4045 (void) ill_frag_timeout(ill, 0);
4045 4046
4046 4047 /*
4047 4048 * Call ill_delete to bring down the ipifs, ilms and ill on
4048 4049 * this ill. Then wait for the refcnts to drop to zero.
4049 4050 * ill_is_freeable checks whether the ill is really quiescent.
4050 4051 * Then make sure that threads that are waiting to enter the
4051 4052 * ipsq have seen the error returned by ipsq_enter and have
4052 4053 * gone away. Then we call ill_delete_tail which does the
4053 4054 * DL_UNBIND_REQ with the driver and then qprocsoff.
4054 4055 */
4055 4056 ill_delete(ill);
4056 4057 mutex_enter(&ill->ill_lock);
4057 4058 while (!ill_is_freeable(ill))
4058 4059 cv_wait(&ill->ill_cv, &ill->ill_lock);
4059 4060
4060 4061 while (ill->ill_waiters)
4061 4062 cv_wait(&ill->ill_cv, &ill->ill_lock);
4062 4063
4063 4064 mutex_exit(&ill->ill_lock);
4064 4065
4065 4066 /*
4066 4067 * ill_delete_tail drops reference on ill_ipst, but we need to keep
4067 4068 * it held until the end of the function since the cleanup
4068 4069 * below needs to be able to use the ip_stack_t.
4069 4070 */
4070 4071 netstack_hold(ipst->ips_netstack);
4071 4072
4072 4073 /* qprocsoff is done via ill_delete_tail */
4073 4074 ill_delete_tail(ill);
4074 4075 /*
4075 4076 * synchronously wait for arp stream to unbind. After this, we
4076 4077 * cannot get any data packets up from the driver.
4077 4078 */
4078 4079 arp_unbind_complete(ill);
4079 4080 ASSERT(ill->ill_ipst == NULL);
4080 4081
4081 4082 /*
4082 4083 * Walk through all conns and qenable those that have queued data.
4083 4084 * Close synchronization needs this to
4084 4085 * be done to ensure that all upper layers blocked
4085 4086 * due to flow control to the closing device
4086 4087 * get unblocked.
4087 4088 */
4088 4089 ip1dbg(("ip_wsrv: walking\n"));
4089 4090 for (i = 0; i < TX_FANOUT_SIZE; i++) {
4090 4091 conn_walk_drain(ipst, &ipst->ips_idl_tx_list[i]);
4091 4092 }
4092 4093
4093 4094 /*
4094 4095 * ai can be null if this is an IPv6 ill, or if the IPv4
4095 4096 * stream is being torn down before ARP was plumbed (e.g.,
4096 4097 * /sbin/ifconfig plumbing a stream twice, and encountering
4097 4098 * an error
4098 4099 */
4099 4100 if (ai != NULL) {
4100 4101 ASSERT(!ill->ill_isv6);
4101 4102 mutex_enter(&ai->ai_lock);
4102 4103 ai->ai_ill = NULL;
4103 4104 if (ai->ai_arl == NULL) {
4104 4105 mutex_destroy(&ai->ai_lock);
4105 4106 kmem_free(ai, sizeof (*ai));
4106 4107 } else {
4107 4108 cv_signal(&ai->ai_ill_unplumb_done);
4108 4109 mutex_exit(&ai->ai_lock);
4109 4110 }
4110 4111 }
4111 4112
4112 4113 mutex_enter(&ipst->ips_ip_mi_lock);
4113 4114 mi_close_unlink(&ipst->ips_ip_g_head, (IDP)ill);
4114 4115 mutex_exit(&ipst->ips_ip_mi_lock);
4115 4116
4116 4117 /*
4117 4118 * credp could be null if the open didn't succeed and ip_modopen
4118 4119 * itself calls ip_close.
4119 4120 */
4120 4121 if (ill->ill_credp != NULL)
4121 4122 crfree(ill->ill_credp);
4122 4123
4123 4124 mutex_destroy(&ill->ill_saved_ire_lock);
4124 4125 mutex_destroy(&ill->ill_lock);
4125 4126 rw_destroy(&ill->ill_mcast_lock);
4126 4127 mutex_destroy(&ill->ill_mcast_serializer);
4127 4128 list_destroy(&ill->ill_nce);
4128 4129
4129 4130 /*
4130 4131 * Now we are done with the module close pieces that
4131 4132 * need the netstack_t.
4132 4133 */
4133 4134 netstack_rele(ipst->ips_netstack);
4134 4135
4135 4136 mi_close_free((IDP)ill);
4136 4137 q->q_ptr = WR(q)->q_ptr = NULL;
4137 4138
4138 4139 ipsq_exit(ipsq);
4139 4140
4140 4141 return (0);
4141 4142 }
4142 4143
4143 4144 /*
4144 4145 * This is called as part of close() for IP, UDP, ICMP, and RTS
4145 4146 * in order to quiesce the conn.
4146 4147 */
4147 4148 void
4148 4149 ip_quiesce_conn(conn_t *connp)
4149 4150 {
4150 4151 boolean_t drain_cleanup_reqd = B_FALSE;
4151 4152 boolean_t conn_ioctl_cleanup_reqd = B_FALSE;
4152 4153 boolean_t ilg_cleanup_reqd = B_FALSE;
4153 4154 ip_stack_t *ipst;
4154 4155
4155 4156 ASSERT(!IPCL_IS_TCP(connp));
4156 4157 ipst = connp->conn_netstack->netstack_ip;
4157 4158
4158 4159 /*
4159 4160 * Mark the conn as closing, and this conn must not be
4160 4161 * inserted in future into any list. Eg. conn_drain_insert(),
4161 4162 * won't insert this conn into the conn_drain_list.
4162 4163 *
4163 4164 * conn_idl, and conn_ilg cannot get set henceforth.
4164 4165 */
4165 4166 mutex_enter(&connp->conn_lock);
4166 4167 ASSERT(!(connp->conn_state_flags & CONN_QUIESCED));
4167 4168 connp->conn_state_flags |= CONN_CLOSING;
4168 4169 if (connp->conn_idl != NULL)
4169 4170 drain_cleanup_reqd = B_TRUE;
4170 4171 if (connp->conn_oper_pending_ill != NULL)
4171 4172 conn_ioctl_cleanup_reqd = B_TRUE;
4172 4173 if (connp->conn_dhcpinit_ill != NULL) {
4173 4174 ASSERT(connp->conn_dhcpinit_ill->ill_dhcpinit != 0);
4174 4175 atomic_dec_32(&connp->conn_dhcpinit_ill->ill_dhcpinit);
4175 4176 ill_set_inputfn(connp->conn_dhcpinit_ill);
4176 4177 connp->conn_dhcpinit_ill = NULL;
4177 4178 }
4178 4179 if (connp->conn_ilg != NULL)
4179 4180 ilg_cleanup_reqd = B_TRUE;
4180 4181 mutex_exit(&connp->conn_lock);
4181 4182
4182 4183 if (conn_ioctl_cleanup_reqd)
4183 4184 conn_ioctl_cleanup(connp);
4184 4185
4185 4186 if (is_system_labeled() && connp->conn_anon_port) {
4186 4187 (void) tsol_mlp_anon(crgetzone(connp->conn_cred),
4187 4188 connp->conn_mlp_type, connp->conn_proto,
4188 4189 ntohs(connp->conn_lport), B_FALSE);
4189 4190 connp->conn_anon_port = 0;
4190 4191 }
4191 4192 connp->conn_mlp_type = mlptSingle;
4192 4193
4193 4194 /*
4194 4195 * Remove this conn from any fanout list it is on.
4195 4196 * and then wait for any threads currently operating
4196 4197 * on this endpoint to finish
4197 4198 */
4198 4199 ipcl_hash_remove(connp);
4199 4200
4200 4201 /*
4201 4202 * Remove this conn from the drain list, and do any other cleanup that
4202 4203 * may be required. (TCP conns are never flow controlled, and
4203 4204 * conn_idl will be NULL.)
4204 4205 */
4205 4206 if (drain_cleanup_reqd && connp->conn_idl != NULL) {
4206 4207 idl_t *idl = connp->conn_idl;
4207 4208
4208 4209 mutex_enter(&idl->idl_lock);
4209 4210 conn_drain(connp, B_TRUE);
4210 4211 mutex_exit(&idl->idl_lock);
4211 4212 }
4212 4213
4213 4214 if (connp == ipst->ips_ip_g_mrouter)
4214 4215 (void) ip_mrouter_done(ipst);
4215 4216
4216 4217 if (ilg_cleanup_reqd)
4217 4218 ilg_delete_all(connp);
4218 4219
4219 4220 /*
4220 4221 * Now conn refcnt can increase only thru CONN_INC_REF_LOCKED.
4221 4222 * callers from write side can't be there now because close
4222 4223 * is in progress. The only other caller is ipcl_walk
4223 4224 * which checks for the condemned flag.
4224 4225 */
4225 4226 mutex_enter(&connp->conn_lock);
4226 4227 connp->conn_state_flags |= CONN_CONDEMNED;
4227 4228 while (connp->conn_ref != 1)
4228 4229 cv_wait(&connp->conn_cv, &connp->conn_lock);
4229 4230 connp->conn_state_flags |= CONN_QUIESCED;
4230 4231 mutex_exit(&connp->conn_lock);
4231 4232 }
4232 4233
4233 4234 /* ARGSUSED */
4234 4235 int
4235 4236 ip_close(queue_t *q, int flags, cred_t *credp __unused)
4236 4237 {
4237 4238 conn_t *connp;
4238 4239
4239 4240 /*
4240 4241 * Call the appropriate delete routine depending on whether this is
4241 4242 * a module or device.
4242 4243 */
4243 4244 if (WR(q)->q_next != NULL) {
4244 4245 /* This is a module close */
4245 4246 return (ip_modclose((ill_t *)q->q_ptr));
4246 4247 }
4247 4248
4248 4249 connp = q->q_ptr;
4249 4250 ip_quiesce_conn(connp);
4250 4251
4251 4252 qprocsoff(q);
4252 4253
4253 4254 /*
4254 4255 * Now we are truly single threaded on this stream, and can
4255 4256 * delete the things hanging off the connp, and finally the connp.
4256 4257 * We removed this connp from the fanout list, it cannot be
4257 4258 * accessed thru the fanouts, and we already waited for the
4258 4259 * conn_ref to drop to 0. We are already in close, so
4259 4260 * there cannot be any other thread from the top. qprocsoff
4260 4261 * has completed, and service has completed or won't run in
4261 4262 * future.
4262 4263 */
4263 4264 ASSERT(connp->conn_ref == 1);
4264 4265
4265 4266 inet_minor_free(connp->conn_minor_arena, connp->conn_dev);
4266 4267
4267 4268 connp->conn_ref--;
4268 4269 ipcl_conn_destroy(connp);
4269 4270
4270 4271 q->q_ptr = WR(q)->q_ptr = NULL;
4271 4272 return (0);
4272 4273 }
4273 4274
4274 4275 /*
4275 4276 * Wapper around putnext() so that ip_rts_request can merely use
4276 4277 * conn_recv.
4277 4278 */
4278 4279 /*ARGSUSED2*/
4279 4280 static void
4280 4281 ip_conn_input(void *arg1, mblk_t *mp, void *arg2, ip_recv_attr_t *ira)
4281 4282 {
4282 4283 conn_t *connp = (conn_t *)arg1;
4283 4284
4284 4285 putnext(connp->conn_rq, mp);
4285 4286 }
4286 4287
4287 4288 /* Dummy in case ICMP error delivery is attempted to a /dev/ip instance */
4288 4289 /* ARGSUSED */
4289 4290 static void
4290 4291 ip_conn_input_icmp(void *arg1, mblk_t *mp, void *arg2, ip_recv_attr_t *ira)
4291 4292 {
4292 4293 freemsg(mp);
4293 4294 }
4294 4295
4295 4296 /*
4296 4297 * Called when the module is about to be unloaded
4297 4298 */
4298 4299 void
4299 4300 ip_ddi_destroy(void)
4300 4301 {
4301 4302 /* This needs to be called before destroying any transports. */
4302 4303 mutex_enter(&cpu_lock);
4303 4304 unregister_cpu_setup_func(ip_tp_cpu_update, NULL);
4304 4305 mutex_exit(&cpu_lock);
4305 4306
4306 4307 tnet_fini();
4307 4308
4308 4309 icmp_ddi_g_destroy();
4309 4310 rts_ddi_g_destroy();
4310 4311 udp_ddi_g_destroy();
4311 4312 sctp_ddi_g_destroy();
4312 4313 tcp_ddi_g_destroy();
4313 4314 ilb_ddi_g_destroy();
4314 4315 dce_g_destroy();
4315 4316 ipsec_policy_g_destroy();
4316 4317 ipcl_g_destroy();
4317 4318 ip_net_g_destroy();
4318 4319 ip_ire_g_fini();
4319 4320 inet_minor_destroy(ip_minor_arena_sa);
4320 4321 #if defined(_LP64)
4321 4322 inet_minor_destroy(ip_minor_arena_la);
4322 4323 #endif
4323 4324
4324 4325 #ifdef DEBUG
4325 4326 list_destroy(&ip_thread_list);
4326 4327 rw_destroy(&ip_thread_rwlock);
4327 4328 tsd_destroy(&ip_thread_data);
4328 4329 #endif
4329 4330
4330 4331 netstack_unregister(NS_IP);
4331 4332 }
4332 4333
4333 4334 /*
4334 4335 * First step in cleanup.
4335 4336 */
4336 4337 /* ARGSUSED */
4337 4338 static void
4338 4339 ip_stack_shutdown(netstackid_t stackid, void *arg)
4339 4340 {
4340 4341 ip_stack_t *ipst = (ip_stack_t *)arg;
4341 4342 kt_did_t ktid;
4342 4343
4343 4344 #ifdef NS_DEBUG
4344 4345 printf("ip_stack_shutdown(%p, stack %d)\n", (void *)ipst, stackid);
4345 4346 #endif
4346 4347
4347 4348 /*
4348 4349 * Perform cleanup for special interfaces (loopback and IPMP).
4349 4350 */
4350 4351 ip_interface_cleanup(ipst);
4351 4352
4352 4353 /*
4353 4354 * The *_hook_shutdown()s start the process of notifying any
4354 4355 * consumers that things are going away.... nothing is destroyed.
4355 4356 */
4356 4357 ipv4_hook_shutdown(ipst);
4357 4358 ipv6_hook_shutdown(ipst);
4358 4359 arp_hook_shutdown(ipst);
4359 4360
4360 4361 mutex_enter(&ipst->ips_capab_taskq_lock);
4361 4362 ktid = ipst->ips_capab_taskq_thread->t_did;
4362 4363 ipst->ips_capab_taskq_quit = B_TRUE;
4363 4364 cv_signal(&ipst->ips_capab_taskq_cv);
4364 4365 mutex_exit(&ipst->ips_capab_taskq_lock);
4365 4366
4366 4367 /*
4367 4368 * In rare occurrences, particularly on virtual hardware where CPUs can
4368 4369 * be de-scheduled, the thread that we just signaled will not run until
4369 4370 * after we have gotten through parts of ip_stack_fini. If that happens
4370 4371 * then we'll try to grab the ips_capab_taskq_lock as part of returning
4371 4372 * from cv_wait which no longer exists.
4372 4373 */
4373 4374 thread_join(ktid);
4374 4375 }
4375 4376
4376 4377 /*
4377 4378 * Free the IP stack instance.
4378 4379 */
4379 4380 static void
4380 4381 ip_stack_fini(netstackid_t stackid, void *arg)
4381 4382 {
4382 4383 ip_stack_t *ipst = (ip_stack_t *)arg;
4383 4384 int ret;
4384 4385
4385 4386 #ifdef NS_DEBUG
4386 4387 printf("ip_stack_fini(%p, stack %d)\n", (void *)ipst, stackid);
4387 4388 #endif
4388 4389 /*
4389 4390 * At this point, all of the notifications that the events and
4390 4391 * protocols are going away have been run, meaning that we can
4391 4392 * now set about starting to clean things up.
4392 4393 */
4393 4394 ipobs_fini(ipst);
4394 4395 ipv4_hook_destroy(ipst);
4395 4396 ipv6_hook_destroy(ipst);
4396 4397 arp_hook_destroy(ipst);
4397 4398 ip_net_destroy(ipst);
4398 4399
4399 4400 ipmp_destroy(ipst);
4400 4401
4401 4402 ip_kstat_fini(stackid, ipst->ips_ip_mibkp);
4402 4403 ipst->ips_ip_mibkp = NULL;
4403 4404 icmp_kstat_fini(stackid, ipst->ips_icmp_mibkp);
4404 4405 ipst->ips_icmp_mibkp = NULL;
4405 4406 ip_kstat2_fini(stackid, ipst->ips_ip_kstat);
4406 4407 ipst->ips_ip_kstat = NULL;
4407 4408 bzero(&ipst->ips_ip_statistics, sizeof (ipst->ips_ip_statistics));
4408 4409 ip6_kstat_fini(stackid, ipst->ips_ip6_kstat);
4409 4410 ipst->ips_ip6_kstat = NULL;
4410 4411 bzero(&ipst->ips_ip6_statistics, sizeof (ipst->ips_ip6_statistics));
4411 4412
4412 4413 kmem_free(ipst->ips_propinfo_tbl,
4413 4414 ip_propinfo_count * sizeof (mod_prop_info_t));
4414 4415 ipst->ips_propinfo_tbl = NULL;
4415 4416
4416 4417 dce_stack_destroy(ipst);
4417 4418 ip_mrouter_stack_destroy(ipst);
4418 4419
4419 4420 /*
4420 4421 * Quiesce all of our timers. Note we set the quiesce flags before we
4421 4422 * call untimeout. The slowtimers may actually kick off another instance
4422 4423 * of the non-slow timers.
4423 4424 */
4424 4425 mutex_enter(&ipst->ips_igmp_timer_lock);
4425 4426 ipst->ips_igmp_timer_quiesce = B_TRUE;
4426 4427 mutex_exit(&ipst->ips_igmp_timer_lock);
4427 4428
4428 4429 mutex_enter(&ipst->ips_mld_timer_lock);
4429 4430 ipst->ips_mld_timer_quiesce = B_TRUE;
4430 4431 mutex_exit(&ipst->ips_mld_timer_lock);
4431 4432
4432 4433 mutex_enter(&ipst->ips_igmp_slowtimeout_lock);
4433 4434 ipst->ips_igmp_slowtimeout_quiesce = B_TRUE;
4434 4435 mutex_exit(&ipst->ips_igmp_slowtimeout_lock);
4435 4436
4436 4437 mutex_enter(&ipst->ips_mld_slowtimeout_lock);
4437 4438 ipst->ips_mld_slowtimeout_quiesce = B_TRUE;
4438 4439 mutex_exit(&ipst->ips_mld_slowtimeout_lock);
4439 4440
4440 4441 ret = untimeout(ipst->ips_igmp_timeout_id);
4441 4442 if (ret == -1) {
4442 4443 ASSERT(ipst->ips_igmp_timeout_id == 0);
4443 4444 } else {
4444 4445 ASSERT(ipst->ips_igmp_timeout_id != 0);
4445 4446 ipst->ips_igmp_timeout_id = 0;
4446 4447 }
4447 4448 ret = untimeout(ipst->ips_igmp_slowtimeout_id);
4448 4449 if (ret == -1) {
4449 4450 ASSERT(ipst->ips_igmp_slowtimeout_id == 0);
4450 4451 } else {
4451 4452 ASSERT(ipst->ips_igmp_slowtimeout_id != 0);
4452 4453 ipst->ips_igmp_slowtimeout_id = 0;
4453 4454 }
4454 4455 ret = untimeout(ipst->ips_mld_timeout_id);
4455 4456 if (ret == -1) {
4456 4457 ASSERT(ipst->ips_mld_timeout_id == 0);
4457 4458 } else {
4458 4459 ASSERT(ipst->ips_mld_timeout_id != 0);
4459 4460 ipst->ips_mld_timeout_id = 0;
4460 4461 }
4461 4462 ret = untimeout(ipst->ips_mld_slowtimeout_id);
4462 4463 if (ret == -1) {
4463 4464 ASSERT(ipst->ips_mld_slowtimeout_id == 0);
4464 4465 } else {
4465 4466 ASSERT(ipst->ips_mld_slowtimeout_id != 0);
4466 4467 ipst->ips_mld_slowtimeout_id = 0;
4467 4468 }
4468 4469
4469 4470 ip_ire_fini(ipst);
4470 4471 ip6_asp_free(ipst);
4471 4472 conn_drain_fini(ipst);
4472 4473 ipcl_destroy(ipst);
4473 4474
4474 4475 mutex_destroy(&ipst->ips_ndp4->ndp_g_lock);
4475 4476 mutex_destroy(&ipst->ips_ndp6->ndp_g_lock);
4476 4477 kmem_free(ipst->ips_ndp4, sizeof (ndp_g_t));
4477 4478 ipst->ips_ndp4 = NULL;
4478 4479 kmem_free(ipst->ips_ndp6, sizeof (ndp_g_t));
4479 4480 ipst->ips_ndp6 = NULL;
4480 4481
4481 4482 if (ipst->ips_loopback_ksp != NULL) {
4482 4483 kstat_delete_netstack(ipst->ips_loopback_ksp, stackid);
4483 4484 ipst->ips_loopback_ksp = NULL;
4484 4485 }
4485 4486
4486 4487 mutex_destroy(&ipst->ips_capab_taskq_lock);
4487 4488 cv_destroy(&ipst->ips_capab_taskq_cv);
4488 4489
4489 4490 rw_destroy(&ipst->ips_srcid_lock);
4490 4491
4491 4492 mutex_destroy(&ipst->ips_ip_mi_lock);
4492 4493 rw_destroy(&ipst->ips_ill_g_usesrc_lock);
4493 4494
4494 4495 mutex_destroy(&ipst->ips_igmp_timer_lock);
4495 4496 mutex_destroy(&ipst->ips_mld_timer_lock);
4496 4497 mutex_destroy(&ipst->ips_igmp_slowtimeout_lock);
4497 4498 mutex_destroy(&ipst->ips_mld_slowtimeout_lock);
4498 4499 mutex_destroy(&ipst->ips_ip_addr_avail_lock);
4499 4500 rw_destroy(&ipst->ips_ill_g_lock);
4500 4501
4501 4502 kmem_free(ipst->ips_phyint_g_list, sizeof (phyint_list_t));
4502 4503 ipst->ips_phyint_g_list = NULL;
4503 4504 kmem_free(ipst->ips_ill_g_heads, sizeof (ill_g_head_t) * MAX_G_HEADS);
4504 4505 ipst->ips_ill_g_heads = NULL;
4505 4506
4506 4507 ldi_ident_release(ipst->ips_ldi_ident);
4507 4508 kmem_free(ipst, sizeof (*ipst));
4508 4509 }
4509 4510
4510 4511 /*
4511 4512 * This function is called from the TSD destructor, and is used to debug
4512 4513 * reference count issues in IP. See block comment in <inet/ip_if.h> for
4513 4514 * details.
4514 4515 */
4515 4516 static void
4516 4517 ip_thread_exit(void *phash)
4517 4518 {
4518 4519 th_hash_t *thh = phash;
4519 4520
4520 4521 rw_enter(&ip_thread_rwlock, RW_WRITER);
4521 4522 list_remove(&ip_thread_list, thh);
4522 4523 rw_exit(&ip_thread_rwlock);
4523 4524 mod_hash_destroy_hash(thh->thh_hash);
4524 4525 kmem_free(thh, sizeof (*thh));
4525 4526 }
4526 4527
4527 4528 /*
4528 4529 * Called when the IP kernel module is loaded into the kernel
4529 4530 */
4530 4531 void
4531 4532 ip_ddi_init(void)
4532 4533 {
4533 4534 ip_squeue_flag = ip_squeue_switch(ip_squeue_enter);
4534 4535
4535 4536 /*
4536 4537 * For IP and TCP the minor numbers should start from 2 since we have 4
4537 4538 * initial devices: ip, ip6, tcp, tcp6.
4538 4539 */
4539 4540 /*
4540 4541 * If this is a 64-bit kernel, then create two separate arenas -
4541 4542 * one for TLIs in the range of INET_MIN_DEV+2 through 2^^18-1, and the
4542 4543 * other for socket apps in the range 2^^18 through 2^^32-1.
4543 4544 */
4544 4545 ip_minor_arena_la = NULL;
4545 4546 ip_minor_arena_sa = NULL;
4546 4547 #if defined(_LP64)
4547 4548 if ((ip_minor_arena_sa = inet_minor_create("ip_minor_arena_sa",
4548 4549 INET_MIN_DEV + 2, MAXMIN32, KM_SLEEP)) == NULL) {
4549 4550 cmn_err(CE_PANIC,
4550 4551 "ip_ddi_init: ip_minor_arena_sa creation failed\n");
4551 4552 }
4552 4553 if ((ip_minor_arena_la = inet_minor_create("ip_minor_arena_la",
4553 4554 MAXMIN32 + 1, MAXMIN64, KM_SLEEP)) == NULL) {
4554 4555 cmn_err(CE_PANIC,
4555 4556 "ip_ddi_init: ip_minor_arena_la creation failed\n");
4556 4557 }
4557 4558 #else
4558 4559 if ((ip_minor_arena_sa = inet_minor_create("ip_minor_arena_sa",
4559 4560 INET_MIN_DEV + 2, MAXMIN, KM_SLEEP)) == NULL) {
4560 4561 cmn_err(CE_PANIC,
4561 4562 "ip_ddi_init: ip_minor_arena_sa creation failed\n");
4562 4563 }
4563 4564 #endif
4564 4565 ip_poll_normal_ticks = MSEC_TO_TICK_ROUNDUP(ip_poll_normal_ms);
4565 4566
4566 4567 ipcl_g_init();
4567 4568 ip_ire_g_init();
4568 4569 ip_net_g_init();
4569 4570
4570 4571 #ifdef DEBUG
4571 4572 tsd_create(&ip_thread_data, ip_thread_exit);
4572 4573 rw_init(&ip_thread_rwlock, NULL, RW_DEFAULT, NULL);
4573 4574 list_create(&ip_thread_list, sizeof (th_hash_t),
4574 4575 offsetof(th_hash_t, thh_link));
4575 4576 #endif
4576 4577 ipsec_policy_g_init();
4577 4578 tcp_ddi_g_init();
4578 4579 sctp_ddi_g_init();
4579 4580 dce_g_init();
4580 4581
4581 4582 /*
4582 4583 * We want to be informed each time a stack is created or
4583 4584 * destroyed in the kernel, so we can maintain the
4584 4585 * set of udp_stack_t's.
4585 4586 */
4586 4587 netstack_register(NS_IP, ip_stack_init, ip_stack_shutdown,
4587 4588 ip_stack_fini);
4588 4589
4589 4590 tnet_init();
4590 4591
4591 4592 udp_ddi_g_init();
4592 4593 rts_ddi_g_init();
4593 4594 icmp_ddi_g_init();
4594 4595 ilb_ddi_g_init();
4595 4596
4596 4597 /* This needs to be called after all transports are initialized. */
4597 4598 mutex_enter(&cpu_lock);
4598 4599 register_cpu_setup_func(ip_tp_cpu_update, NULL);
4599 4600 mutex_exit(&cpu_lock);
4600 4601 }
4601 4602
4602 4603 /*
4603 4604 * Initialize the IP stack instance.
4604 4605 */
4605 4606 static void *
4606 4607 ip_stack_init(netstackid_t stackid, netstack_t *ns)
4607 4608 {
4608 4609 ip_stack_t *ipst;
4609 4610 size_t arrsz;
4610 4611 major_t major;
4611 4612
4612 4613 #ifdef NS_DEBUG
4613 4614 printf("ip_stack_init(stack %d)\n", stackid);
4614 4615 #endif
4615 4616
4616 4617 ipst = (ip_stack_t *)kmem_zalloc(sizeof (*ipst), KM_SLEEP);
4617 4618 ipst->ips_netstack = ns;
4618 4619
4619 4620 ipst->ips_ill_g_heads = kmem_zalloc(sizeof (ill_g_head_t) * MAX_G_HEADS,
4620 4621 KM_SLEEP);
4621 4622 ipst->ips_phyint_g_list = kmem_zalloc(sizeof (phyint_list_t),
4622 4623 KM_SLEEP);
4623 4624 ipst->ips_ndp4 = kmem_zalloc(sizeof (ndp_g_t), KM_SLEEP);
4624 4625 ipst->ips_ndp6 = kmem_zalloc(sizeof (ndp_g_t), KM_SLEEP);
4625 4626 mutex_init(&ipst->ips_ndp4->ndp_g_lock, NULL, MUTEX_DEFAULT, NULL);
4626 4627 mutex_init(&ipst->ips_ndp6->ndp_g_lock, NULL, MUTEX_DEFAULT, NULL);
4627 4628
4628 4629 mutex_init(&ipst->ips_igmp_timer_lock, NULL, MUTEX_DEFAULT, NULL);
4629 4630 ipst->ips_igmp_deferred_next = INFINITY;
4630 4631 mutex_init(&ipst->ips_mld_timer_lock, NULL, MUTEX_DEFAULT, NULL);
4631 4632 ipst->ips_mld_deferred_next = INFINITY;
4632 4633 mutex_init(&ipst->ips_igmp_slowtimeout_lock, NULL, MUTEX_DEFAULT, NULL);
4633 4634 mutex_init(&ipst->ips_mld_slowtimeout_lock, NULL, MUTEX_DEFAULT, NULL);
4634 4635 mutex_init(&ipst->ips_ip_mi_lock, NULL, MUTEX_DEFAULT, NULL);
4635 4636 mutex_init(&ipst->ips_ip_addr_avail_lock, NULL, MUTEX_DEFAULT, NULL);
4636 4637 rw_init(&ipst->ips_ill_g_lock, NULL, RW_DEFAULT, NULL);
4637 4638 rw_init(&ipst->ips_ill_g_usesrc_lock, NULL, RW_DEFAULT, NULL);
4638 4639
4639 4640 ipcl_init(ipst);
4640 4641 ip_ire_init(ipst);
4641 4642 ip6_asp_init(ipst);
4642 4643 ipif_init(ipst);
4643 4644 conn_drain_init(ipst);
4644 4645 ip_mrouter_stack_init(ipst);
4645 4646 dce_stack_init(ipst);
4646 4647
4647 4648 ipst->ips_ip_multirt_log_interval = 1000;
4648 4649
4649 4650 ipst->ips_ill_index = 1;
4650 4651
4651 4652 ipst->ips_saved_ip_forwarding = -1;
4652 4653 ipst->ips_reg_vif_num = ALL_VIFS; /* Index to Register vif */
4653 4654
4654 4655 arrsz = ip_propinfo_count * sizeof (mod_prop_info_t);
4655 4656 ipst->ips_propinfo_tbl = (mod_prop_info_t *)kmem_alloc(arrsz, KM_SLEEP);
4656 4657 bcopy(ip_propinfo_tbl, ipst->ips_propinfo_tbl, arrsz);
4657 4658
4658 4659 ipst->ips_ip_mibkp = ip_kstat_init(stackid, ipst);
4659 4660 ipst->ips_icmp_mibkp = icmp_kstat_init(stackid);
4660 4661 ipst->ips_ip_kstat = ip_kstat2_init(stackid, &ipst->ips_ip_statistics);
4661 4662 ipst->ips_ip6_kstat =
4662 4663 ip6_kstat_init(stackid, &ipst->ips_ip6_statistics);
4663 4664
4664 4665 ipst->ips_ip_src_id = 1;
4665 4666 rw_init(&ipst->ips_srcid_lock, NULL, RW_DEFAULT, NULL);
4666 4667
4667 4668 ipst->ips_src_generation = SRC_GENERATION_INITIAL;
4668 4669
4669 4670 ip_net_init(ipst, ns);
4670 4671 ipv4_hook_init(ipst);
4671 4672 ipv6_hook_init(ipst);
4672 4673 arp_hook_init(ipst);
4673 4674 ipmp_init(ipst);
4674 4675 ipobs_init(ipst);
4675 4676
4676 4677 /*
4677 4678 * Create the taskq dispatcher thread and initialize related stuff.
4678 4679 */
4679 4680 mutex_init(&ipst->ips_capab_taskq_lock, NULL, MUTEX_DEFAULT, NULL);
4680 4681 cv_init(&ipst->ips_capab_taskq_cv, NULL, CV_DEFAULT, NULL);
4681 4682 ipst->ips_capab_taskq_thread = thread_create(NULL, 0,
4682 4683 ill_taskq_dispatch, ipst, 0, &p0, TS_RUN, minclsyspri);
4683 4684
4684 4685 major = mod_name_to_major(INET_NAME);
4685 4686 (void) ldi_ident_from_major(major, &ipst->ips_ldi_ident);
4686 4687 return (ipst);
4687 4688 }
4688 4689
4689 4690 /*
4690 4691 * Allocate and initialize a DLPI template of the specified length. (May be
4691 4692 * called as writer.)
4692 4693 */
4693 4694 mblk_t *
4694 4695 ip_dlpi_alloc(size_t len, t_uscalar_t prim)
4695 4696 {
4696 4697 mblk_t *mp;
4697 4698
4698 4699 mp = allocb(len, BPRI_MED);
4699 4700 if (!mp)
4700 4701 return (NULL);
4701 4702
4702 4703 /*
4703 4704 * DLPIv2 says that DL_INFO_REQ and DL_TOKEN_REQ (the latter
4704 4705 * of which we don't seem to use) are sent with M_PCPROTO, and
4705 4706 * that other DLPI are M_PROTO.
4706 4707 */
4707 4708 if (prim == DL_INFO_REQ) {
4708 4709 mp->b_datap->db_type = M_PCPROTO;
4709 4710 } else {
4710 4711 mp->b_datap->db_type = M_PROTO;
4711 4712 }
4712 4713
4713 4714 mp->b_wptr = mp->b_rptr + len;
4714 4715 bzero(mp->b_rptr, len);
4715 4716 ((dl_unitdata_req_t *)mp->b_rptr)->dl_primitive = prim;
4716 4717 return (mp);
4717 4718 }
4718 4719
4719 4720 /*
4720 4721 * Allocate and initialize a DLPI notification. (May be called as writer.)
4721 4722 */
4722 4723 mblk_t *
4723 4724 ip_dlnotify_alloc(uint_t notification, uint_t data)
4724 4725 {
4725 4726 dl_notify_ind_t *notifyp;
4726 4727 mblk_t *mp;
4727 4728
4728 4729 if ((mp = ip_dlpi_alloc(DL_NOTIFY_IND_SIZE, DL_NOTIFY_IND)) == NULL)
4729 4730 return (NULL);
4730 4731
4731 4732 notifyp = (dl_notify_ind_t *)mp->b_rptr;
4732 4733 notifyp->dl_notification = notification;
4733 4734 notifyp->dl_data = data;
4734 4735 return (mp);
4735 4736 }
4736 4737
4737 4738 mblk_t *
4738 4739 ip_dlnotify_alloc2(uint_t notification, uint_t data1, uint_t data2)
4739 4740 {
4740 4741 dl_notify_ind_t *notifyp;
4741 4742 mblk_t *mp;
4742 4743
4743 4744 if ((mp = ip_dlpi_alloc(DL_NOTIFY_IND_SIZE, DL_NOTIFY_IND)) == NULL)
4744 4745 return (NULL);
4745 4746
4746 4747 notifyp = (dl_notify_ind_t *)mp->b_rptr;
4747 4748 notifyp->dl_notification = notification;
4748 4749 notifyp->dl_data1 = data1;
4749 4750 notifyp->dl_data2 = data2;
4750 4751 return (mp);
4751 4752 }
4752 4753
4753 4754 /*
4754 4755 * Debug formatting routine. Returns a character string representation of the
4755 4756 * addr in buf, of the form xxx.xxx.xxx.xxx. This routine takes the address
4756 4757 * in the form of a ipaddr_t and calls ip_dot_saddr with a pointer.
4757 4758 *
4758 4759 * Once the ndd table-printing interfaces are removed, this can be changed to
4759 4760 * standard dotted-decimal form.
4760 4761 */
4761 4762 char *
4762 4763 ip_dot_addr(ipaddr_t addr, char *buf)
4763 4764 {
4764 4765 uint8_t *ap = (uint8_t *)&addr;
4765 4766
4766 4767 (void) mi_sprintf(buf, "%03d.%03d.%03d.%03d",
4767 4768 ap[0] & 0xFF, ap[1] & 0xFF, ap[2] & 0xFF, ap[3] & 0xFF);
4768 4769 return (buf);
4769 4770 }
4770 4771
4771 4772 /*
4772 4773 * Write the given MAC address as a printable string in the usual colon-
4773 4774 * separated format.
4774 4775 */
4775 4776 const char *
4776 4777 mac_colon_addr(const uint8_t *addr, size_t alen, char *buf, size_t buflen)
4777 4778 {
4778 4779 char *bp;
4779 4780
4780 4781 if (alen == 0 || buflen < 4)
4781 4782 return ("?");
4782 4783 bp = buf;
4783 4784 for (;;) {
4784 4785 /*
4785 4786 * If there are more MAC address bytes available, but we won't
4786 4787 * have any room to print them, then add "..." to the string
4787 4788 * instead. See below for the 'magic number' explanation.
4788 4789 */
4789 4790 if ((alen == 2 && buflen < 6) || (alen > 2 && buflen < 7)) {
4790 4791 (void) strcpy(bp, "...");
4791 4792 break;
4792 4793 }
4793 4794 (void) sprintf(bp, "%02x", *addr++);
4794 4795 bp += 2;
4795 4796 if (--alen == 0)
4796 4797 break;
4797 4798 *bp++ = ':';
4798 4799 buflen -= 3;
4799 4800 /*
4800 4801 * At this point, based on the first 'if' statement above,
4801 4802 * either alen == 1 and buflen >= 3, or alen > 1 and
4802 4803 * buflen >= 4. The first case leaves room for the final "xx"
4803 4804 * number and trailing NUL byte. The second leaves room for at
4804 4805 * least "...". Thus the apparently 'magic' numbers chosen for
4805 4806 * that statement.
4806 4807 */
4807 4808 }
4808 4809 return (buf);
4809 4810 }
4810 4811
4811 4812 /*
4812 4813 * Called when it is conceptually a ULP that would sent the packet
4813 4814 * e.g., port unreachable and protocol unreachable. Check that the packet
4814 4815 * would have passed the IPsec global policy before sending the error.
4815 4816 *
4816 4817 * Send an ICMP error after patching up the packet appropriately.
4817 4818 * Uses ip_drop_input and bumps the appropriate MIB.
4818 4819 */
4819 4820 void
4820 4821 ip_fanout_send_icmp_v4(mblk_t *mp, uint_t icmp_type, uint_t icmp_code,
4821 4822 ip_recv_attr_t *ira)
4822 4823 {
4823 4824 ipha_t *ipha;
4824 4825 boolean_t secure;
4825 4826 ill_t *ill = ira->ira_ill;
4826 4827 ip_stack_t *ipst = ill->ill_ipst;
4827 4828 netstack_t *ns = ipst->ips_netstack;
4828 4829 ipsec_stack_t *ipss = ns->netstack_ipsec;
4829 4830
4830 4831 secure = ira->ira_flags & IRAF_IPSEC_SECURE;
4831 4832
4832 4833 /*
4833 4834 * We are generating an icmp error for some inbound packet.
4834 4835 * Called from all ip_fanout_(udp, tcp, proto) functions.
4835 4836 * Before we generate an error, check with global policy
4836 4837 * to see whether this is allowed to enter the system. As
4837 4838 * there is no "conn", we are checking with global policy.
4838 4839 */
4839 4840 ipha = (ipha_t *)mp->b_rptr;
4840 4841 if (secure || ipss->ipsec_inbound_v4_policy_present) {
4841 4842 mp = ipsec_check_global_policy(mp, NULL, ipha, NULL, ira, ns);
4842 4843 if (mp == NULL)
4843 4844 return;
4844 4845 }
4845 4846
4846 4847 /* We never send errors for protocols that we do implement */
4847 4848 if (ira->ira_protocol == IPPROTO_ICMP ||
4848 4849 ira->ira_protocol == IPPROTO_IGMP) {
4849 4850 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
4850 4851 ip_drop_input("ip_fanout_send_icmp_v4", mp, ill);
4851 4852 freemsg(mp);
4852 4853 return;
4853 4854 }
4854 4855 /*
4855 4856 * Have to correct checksum since
4856 4857 * the packet might have been
4857 4858 * fragmented and the reassembly code in ip_rput
4858 4859 * does not restore the IP checksum.
4859 4860 */
4860 4861 ipha->ipha_hdr_checksum = 0;
4861 4862 ipha->ipha_hdr_checksum = ip_csum_hdr(ipha);
4862 4863
4863 4864 switch (icmp_type) {
4864 4865 case ICMP_DEST_UNREACHABLE:
4865 4866 switch (icmp_code) {
4866 4867 case ICMP_PROTOCOL_UNREACHABLE:
4867 4868 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInUnknownProtos);
4868 4869 ip_drop_input("ipIfStatsInUnknownProtos", mp, ill);
4869 4870 break;
4870 4871 case ICMP_PORT_UNREACHABLE:
4871 4872 BUMP_MIB(ill->ill_ip_mib, udpIfStatsNoPorts);
4872 4873 ip_drop_input("ipIfStatsNoPorts", mp, ill);
4873 4874 break;
4874 4875 }
4875 4876
4876 4877 icmp_unreachable(mp, icmp_code, ira);
4877 4878 break;
4878 4879 default:
4879 4880 #ifdef DEBUG
4880 4881 panic("ip_fanout_send_icmp_v4: wrong type");
4881 4882 /*NOTREACHED*/
4882 4883 #else
4883 4884 freemsg(mp);
4884 4885 break;
4885 4886 #endif
4886 4887 }
4887 4888 }
4888 4889
4889 4890 /*
4890 4891 * Used to send an ICMP error message when a packet is received for
4891 4892 * a protocol that is not supported. The mblk passed as argument
4892 4893 * is consumed by this function.
4893 4894 */
4894 4895 void
4895 4896 ip_proto_not_sup(mblk_t *mp, ip_recv_attr_t *ira)
4896 4897 {
4897 4898 ipha_t *ipha;
4898 4899
4899 4900 ipha = (ipha_t *)mp->b_rptr;
4900 4901 if (ira->ira_flags & IRAF_IS_IPV4) {
4901 4902 ASSERT(IPH_HDR_VERSION(ipha) == IP_VERSION);
4902 4903 ip_fanout_send_icmp_v4(mp, ICMP_DEST_UNREACHABLE,
4903 4904 ICMP_PROTOCOL_UNREACHABLE, ira);
4904 4905 } else {
4905 4906 ASSERT(IPH_HDR_VERSION(ipha) == IPV6_VERSION);
4906 4907 ip_fanout_send_icmp_v6(mp, ICMP6_PARAM_PROB,
4907 4908 ICMP6_PARAMPROB_NEXTHEADER, ira);
4908 4909 }
4909 4910 }
4910 4911
4911 4912 /*
4912 4913 * Deliver a rawip packet to the given conn, possibly applying ipsec policy.
4913 4914 * Handles IPv4 and IPv6.
4914 4915 * We are responsible for disposing of mp, such as by freemsg() or putnext()
4915 4916 * Caller is responsible for dropping references to the conn.
4916 4917 */
4917 4918 void
4918 4919 ip_fanout_proto_conn(conn_t *connp, mblk_t *mp, ipha_t *ipha, ip6_t *ip6h,
4919 4920 ip_recv_attr_t *ira)
4920 4921 {
4921 4922 ill_t *ill = ira->ira_ill;
4922 4923 ip_stack_t *ipst = ill->ill_ipst;
4923 4924 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
4924 4925 boolean_t secure;
4925 4926 uint_t protocol = ira->ira_protocol;
4926 4927 iaflags_t iraflags = ira->ira_flags;
4927 4928 queue_t *rq;
4928 4929
4929 4930 secure = iraflags & IRAF_IPSEC_SECURE;
4930 4931
4931 4932 rq = connp->conn_rq;
4932 4933 if (IPCL_IS_NONSTR(connp) ? connp->conn_flow_cntrld : !canputnext(rq)) {
4933 4934 switch (protocol) {
4934 4935 case IPPROTO_ICMPV6:
4935 4936 BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInOverflows);
4936 4937 break;
4937 4938 case IPPROTO_ICMP:
4938 4939 BUMP_MIB(&ipst->ips_icmp_mib, icmpInOverflows);
4939 4940 break;
4940 4941 default:
4941 4942 BUMP_MIB(ill->ill_ip_mib, rawipIfStatsInOverflows);
4942 4943 break;
4943 4944 }
4944 4945 freemsg(mp);
4945 4946 return;
4946 4947 }
4947 4948
4948 4949 ASSERT(!(IPCL_IS_IPTUN(connp)));
4949 4950
4950 4951 if (((iraflags & IRAF_IS_IPV4) ?
4951 4952 CONN_INBOUND_POLICY_PRESENT(connp, ipss) :
4952 4953 CONN_INBOUND_POLICY_PRESENT_V6(connp, ipss)) ||
4953 4954 secure) {
4954 4955 mp = ipsec_check_inbound_policy(mp, connp, ipha,
4955 4956 ip6h, ira);
4956 4957 if (mp == NULL) {
4957 4958 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
4958 4959 /* Note that mp is NULL */
4959 4960 ip_drop_input("ipIfStatsInDiscards", mp, ill);
4960 4961 return;
4961 4962 }
4962 4963 }
4963 4964
4964 4965 if (iraflags & IRAF_ICMP_ERROR) {
4965 4966 (connp->conn_recvicmp)(connp, mp, NULL, ira);
4966 4967 } else {
4967 4968 ill_t *rill = ira->ira_rill;
4968 4969
4969 4970 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCInDelivers);
4970 4971 ira->ira_ill = ira->ira_rill = NULL;
4971 4972 /* Send it upstream */
4972 4973 (connp->conn_recv)(connp, mp, NULL, ira);
4973 4974 ira->ira_ill = ill;
4974 4975 ira->ira_rill = rill;
4975 4976 }
4976 4977 }
4977 4978
4978 4979 /*
4979 4980 * Handle protocols with which IP is less intimate. There
4980 4981 * can be more than one stream bound to a particular
4981 4982 * protocol. When this is the case, normally each one gets a copy
4982 4983 * of any incoming packets.
4983 4984 *
4984 4985 * IPsec NOTE :
4985 4986 *
4986 4987 * Don't allow a secure packet going up a non-secure connection.
4987 4988 * We don't allow this because
4988 4989 *
4989 4990 * 1) Reply might go out in clear which will be dropped at
4990 4991 * the sending side.
4991 4992 * 2) If the reply goes out in clear it will give the
4992 4993 * adversary enough information for getting the key in
4993 4994 * most of the cases.
4994 4995 *
4995 4996 * Moreover getting a secure packet when we expect clear
4996 4997 * implies that SA's were added without checking for
4997 4998 * policy on both ends. This should not happen once ISAKMP
4998 4999 * is used to negotiate SAs as SAs will be added only after
4999 5000 * verifying the policy.
5000 5001 *
5001 5002 * Zones notes:
5002 5003 * Earlier in ip_input on a system with multiple shared-IP zones we
5003 5004 * duplicate the multicast and broadcast packets and send them up
5004 5005 * with each explicit zoneid that exists on that ill.
5005 5006 * This means that here we can match the zoneid with SO_ALLZONES being special.
5006 5007 */
5007 5008 void
5008 5009 ip_fanout_proto_v4(mblk_t *mp, ipha_t *ipha, ip_recv_attr_t *ira)
5009 5010 {
5010 5011 mblk_t *mp1;
5011 5012 ipaddr_t laddr;
5012 5013 conn_t *connp, *first_connp, *next_connp;
5013 5014 connf_t *connfp;
5014 5015 ill_t *ill = ira->ira_ill;
5015 5016 ip_stack_t *ipst = ill->ill_ipst;
5016 5017
5017 5018 laddr = ipha->ipha_dst;
5018 5019
5019 5020 connfp = &ipst->ips_ipcl_proto_fanout_v4[ira->ira_protocol];
5020 5021 mutex_enter(&connfp->connf_lock);
5021 5022 connp = connfp->connf_head;
5022 5023 for (connp = connfp->connf_head; connp != NULL;
5023 5024 connp = connp->conn_next) {
5024 5025 /* Note: IPCL_PROTO_MATCH includes conn_wantpacket */
5025 5026 if (IPCL_PROTO_MATCH(connp, ira, ipha) &&
5026 5027 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5027 5028 tsol_receive_local(mp, &laddr, IPV4_VERSION, ira, connp))) {
5028 5029 break;
5029 5030 }
5030 5031 }
5031 5032
5032 5033 if (connp == NULL) {
5033 5034 /*
5034 5035 * No one bound to these addresses. Is
5035 5036 * there a client that wants all
5036 5037 * unclaimed datagrams?
5037 5038 */
5038 5039 mutex_exit(&connfp->connf_lock);
5039 5040 ip_fanout_send_icmp_v4(mp, ICMP_DEST_UNREACHABLE,
5040 5041 ICMP_PROTOCOL_UNREACHABLE, ira);
5041 5042 return;
5042 5043 }
5043 5044
5044 5045 ASSERT(IPCL_IS_NONSTR(connp) || connp->conn_rq != NULL);
5045 5046
5046 5047 CONN_INC_REF(connp);
5047 5048 first_connp = connp;
5048 5049 connp = connp->conn_next;
5049 5050
5050 5051 for (;;) {
5051 5052 while (connp != NULL) {
5052 5053 /* Note: IPCL_PROTO_MATCH includes conn_wantpacket */
5053 5054 if (IPCL_PROTO_MATCH(connp, ira, ipha) &&
5054 5055 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5055 5056 tsol_receive_local(mp, &laddr, IPV4_VERSION,
5056 5057 ira, connp)))
5057 5058 break;
5058 5059 connp = connp->conn_next;
5059 5060 }
5060 5061
5061 5062 if (connp == NULL) {
5062 5063 /* No more interested clients */
5063 5064 connp = first_connp;
5064 5065 break;
5065 5066 }
5066 5067 if (((mp1 = dupmsg(mp)) == NULL) &&
5067 5068 ((mp1 = copymsg(mp)) == NULL)) {
5068 5069 /* Memory allocation failed */
5069 5070 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5070 5071 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5071 5072 connp = first_connp;
5072 5073 break;
5073 5074 }
5074 5075
5075 5076 CONN_INC_REF(connp);
5076 5077 mutex_exit(&connfp->connf_lock);
5077 5078
5078 5079 ip_fanout_proto_conn(connp, mp1, (ipha_t *)mp1->b_rptr, NULL,
5079 5080 ira);
5080 5081
5081 5082 mutex_enter(&connfp->connf_lock);
5082 5083 /* Follow the next pointer before releasing the conn. */
5083 5084 next_connp = connp->conn_next;
5084 5085 CONN_DEC_REF(connp);
5085 5086 connp = next_connp;
5086 5087 }
5087 5088
5088 5089 /* Last one. Send it upstream. */
5089 5090 mutex_exit(&connfp->connf_lock);
5090 5091
5091 5092 ip_fanout_proto_conn(connp, mp, ipha, NULL, ira);
5092 5093
5093 5094 CONN_DEC_REF(connp);
5094 5095 }
5095 5096
5096 5097 /*
5097 5098 * If we have a IPsec NAT-Traversal packet, strip the zero-SPI or
5098 5099 * pass it along to ESP if the SPI is non-zero. Returns the mblk if the mblk
5099 5100 * is not consumed.
5100 5101 *
5101 5102 * One of three things can happen, all of which affect the passed-in mblk:
5102 5103 *
5103 5104 * 1.) The packet is stock UDP and gets its zero-SPI stripped. Return mblk..
5104 5105 *
5105 5106 * 2.) The packet is ESP-in-UDP, gets transformed into an equivalent
5106 5107 * ESP packet, and is passed along to ESP for consumption. Return NULL.
5107 5108 *
5108 5109 * 3.) The packet is an ESP-in-UDP Keepalive. Drop it and return NULL.
5109 5110 */
5110 5111 mblk_t *
5111 5112 zero_spi_check(mblk_t *mp, ip_recv_attr_t *ira)
5112 5113 {
5113 5114 int shift, plen, iph_len;
5114 5115 ipha_t *ipha;
5115 5116 udpha_t *udpha;
5116 5117 uint32_t *spi;
5117 5118 uint32_t esp_ports;
5118 5119 uint8_t *orptr;
5119 5120 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
5120 5121 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
5121 5122
5122 5123 ipha = (ipha_t *)mp->b_rptr;
5123 5124 iph_len = ira->ira_ip_hdr_length;
5124 5125 plen = ira->ira_pktlen;
5125 5126
5126 5127 if (plen - iph_len - sizeof (udpha_t) < sizeof (uint32_t)) {
5127 5128 /*
5128 5129 * Most likely a keepalive for the benefit of an intervening
5129 5130 * NAT. These aren't for us, per se, so drop it.
5130 5131 *
5131 5132 * RFC 3947/8 doesn't say for sure what to do for 2-3
5132 5133 * byte packets (keepalives are 1-byte), but we'll drop them
5133 5134 * also.
5134 5135 */
5135 5136 ip_drop_packet(mp, B_TRUE, ira->ira_ill,
5136 5137 DROPPER(ipss, ipds_esp_nat_t_ka), &ipss->ipsec_dropper);
5137 5138 return (NULL);
5138 5139 }
5139 5140
5140 5141 if (MBLKL(mp) < iph_len + sizeof (udpha_t) + sizeof (*spi)) {
5141 5142 /* might as well pull it all up - it might be ESP. */
5142 5143 if (!pullupmsg(mp, -1)) {
5143 5144 ip_drop_packet(mp, B_TRUE, ira->ira_ill,
5144 5145 DROPPER(ipss, ipds_esp_nomem),
5145 5146 &ipss->ipsec_dropper);
5146 5147 return (NULL);
5147 5148 }
5148 5149
5149 5150 ipha = (ipha_t *)mp->b_rptr;
5150 5151 }
5151 5152 spi = (uint32_t *)(mp->b_rptr + iph_len + sizeof (udpha_t));
5152 5153 if (*spi == 0) {
5153 5154 /* UDP packet - remove 0-spi. */
5154 5155 shift = sizeof (uint32_t);
5155 5156 } else {
5156 5157 /* ESP-in-UDP packet - reduce to ESP. */
5157 5158 ipha->ipha_protocol = IPPROTO_ESP;
5158 5159 shift = sizeof (udpha_t);
5159 5160 }
5160 5161
5161 5162 /* Fix IP header */
5162 5163 ira->ira_pktlen = (plen - shift);
5163 5164 ipha->ipha_length = htons(ira->ira_pktlen);
5164 5165 ipha->ipha_hdr_checksum = 0;
5165 5166
5166 5167 orptr = mp->b_rptr;
5167 5168 mp->b_rptr += shift;
5168 5169
5169 5170 udpha = (udpha_t *)(orptr + iph_len);
5170 5171 if (*spi == 0) {
5171 5172 ASSERT((uint8_t *)ipha == orptr);
5172 5173 udpha->uha_length = htons(plen - shift - iph_len);
5173 5174 iph_len += sizeof (udpha_t); /* For the call to ovbcopy(). */
5174 5175 esp_ports = 0;
5175 5176 } else {
5176 5177 esp_ports = *((uint32_t *)udpha);
5177 5178 ASSERT(esp_ports != 0);
5178 5179 }
5179 5180 ovbcopy(orptr, orptr + shift, iph_len);
5180 5181 if (esp_ports != 0) /* Punt up for ESP processing. */ {
5181 5182 ipha = (ipha_t *)(orptr + shift);
5182 5183
5183 5184 ira->ira_flags |= IRAF_ESP_UDP_PORTS;
5184 5185 ira->ira_esp_udp_ports = esp_ports;
5185 5186 ip_fanout_v4(mp, ipha, ira);
5186 5187 return (NULL);
5187 5188 }
5188 5189 return (mp);
5189 5190 }
5190 5191
5191 5192 /*
5192 5193 * Deliver a udp packet to the given conn, possibly applying ipsec policy.
5193 5194 * Handles IPv4 and IPv6.
5194 5195 * We are responsible for disposing of mp, such as by freemsg() or putnext()
5195 5196 * Caller is responsible for dropping references to the conn.
5196 5197 */
5197 5198 void
5198 5199 ip_fanout_udp_conn(conn_t *connp, mblk_t *mp, ipha_t *ipha, ip6_t *ip6h,
5199 5200 ip_recv_attr_t *ira)
5200 5201 {
5201 5202 ill_t *ill = ira->ira_ill;
5202 5203 ip_stack_t *ipst = ill->ill_ipst;
5203 5204 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
5204 5205 boolean_t secure;
5205 5206 iaflags_t iraflags = ira->ira_flags;
5206 5207
5207 5208 secure = iraflags & IRAF_IPSEC_SECURE;
5208 5209
5209 5210 if (IPCL_IS_NONSTR(connp) ? connp->conn_flow_cntrld :
5210 5211 !canputnext(connp->conn_rq)) {
5211 5212 BUMP_MIB(ill->ill_ip_mib, udpIfStatsInOverflows);
5212 5213 freemsg(mp);
5213 5214 return;
5214 5215 }
5215 5216
5216 5217 if (((iraflags & IRAF_IS_IPV4) ?
5217 5218 CONN_INBOUND_POLICY_PRESENT(connp, ipss) :
5218 5219 CONN_INBOUND_POLICY_PRESENT_V6(connp, ipss)) ||
5219 5220 secure) {
5220 5221 mp = ipsec_check_inbound_policy(mp, connp, ipha,
5221 5222 ip6h, ira);
5222 5223 if (mp == NULL) {
5223 5224 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5224 5225 /* Note that mp is NULL */
5225 5226 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5226 5227 return;
5227 5228 }
5228 5229 }
5229 5230
5230 5231 /*
5231 5232 * Since this code is not used for UDP unicast we don't need a NAT_T
5232 5233 * check. Only ip_fanout_v4 has that check.
5233 5234 */
5234 5235 if (ira->ira_flags & IRAF_ICMP_ERROR) {
5235 5236 (connp->conn_recvicmp)(connp, mp, NULL, ira);
5236 5237 } else {
5237 5238 ill_t *rill = ira->ira_rill;
5238 5239
5239 5240 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCInDelivers);
5240 5241 ira->ira_ill = ira->ira_rill = NULL;
5241 5242 /* Send it upstream */
5242 5243 (connp->conn_recv)(connp, mp, NULL, ira);
5243 5244 ira->ira_ill = ill;
5244 5245 ira->ira_rill = rill;
5245 5246 }
5246 5247 }
5247 5248
5248 5249 /*
5249 5250 * Fanout for UDP packets that are multicast or broadcast, and ICMP errors.
5250 5251 * (Unicast fanout is handled in ip_input_v4.)
5251 5252 *
5252 5253 * If SO_REUSEADDR is set all multicast and broadcast packets
5253 5254 * will be delivered to all conns bound to the same port.
5254 5255 *
5255 5256 * If there is at least one matching AF_INET receiver, then we will
5256 5257 * ignore any AF_INET6 receivers.
5257 5258 * In the special case where an AF_INET socket binds to 0.0.0.0/<port> and an
5258 5259 * AF_INET6 socket binds to ::/<port>, only the AF_INET socket receives the IPv4
5259 5260 * packets.
5260 5261 *
5261 5262 * Zones notes:
5262 5263 * Earlier in ip_input on a system with multiple shared-IP zones we
5263 5264 * duplicate the multicast and broadcast packets and send them up
5264 5265 * with each explicit zoneid that exists on that ill.
5265 5266 * This means that here we can match the zoneid with SO_ALLZONES being special.
5266 5267 */
5267 5268 void
5268 5269 ip_fanout_udp_multi_v4(mblk_t *mp, ipha_t *ipha, uint16_t lport, uint16_t fport,
5269 5270 ip_recv_attr_t *ira)
5270 5271 {
5271 5272 ipaddr_t laddr;
5272 5273 in6_addr_t v6faddr;
5273 5274 conn_t *connp;
5274 5275 connf_t *connfp;
5275 5276 ipaddr_t faddr;
5276 5277 ill_t *ill = ira->ira_ill;
5277 5278 ip_stack_t *ipst = ill->ill_ipst;
5278 5279
5279 5280 ASSERT(ira->ira_flags & (IRAF_MULTIBROADCAST|IRAF_ICMP_ERROR));
5280 5281
5281 5282 laddr = ipha->ipha_dst;
5282 5283 faddr = ipha->ipha_src;
5283 5284
5284 5285 connfp = &ipst->ips_ipcl_udp_fanout[IPCL_UDP_HASH(lport, ipst)];
5285 5286 mutex_enter(&connfp->connf_lock);
5286 5287 connp = connfp->connf_head;
5287 5288
5288 5289 /*
5289 5290 * If SO_REUSEADDR has been set on the first we send the
5290 5291 * packet to all clients that have joined the group and
5291 5292 * match the port.
5292 5293 */
5293 5294 while (connp != NULL) {
5294 5295 if ((IPCL_UDP_MATCH(connp, lport, laddr, fport, faddr)) &&
5295 5296 conn_wantpacket(connp, ira, ipha) &&
5296 5297 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5297 5298 tsol_receive_local(mp, &laddr, IPV4_VERSION, ira, connp)))
5298 5299 break;
5299 5300 connp = connp->conn_next;
5300 5301 }
5301 5302
5302 5303 if (connp == NULL)
5303 5304 goto notfound;
5304 5305
5305 5306 CONN_INC_REF(connp);
5306 5307
5307 5308 if (connp->conn_reuseaddr) {
5308 5309 conn_t *first_connp = connp;
5309 5310 conn_t *next_connp;
5310 5311 mblk_t *mp1;
5311 5312
5312 5313 connp = connp->conn_next;
5313 5314 for (;;) {
5314 5315 while (connp != NULL) {
5315 5316 if (IPCL_UDP_MATCH(connp, lport, laddr,
5316 5317 fport, faddr) &&
5317 5318 conn_wantpacket(connp, ira, ipha) &&
5318 5319 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5319 5320 tsol_receive_local(mp, &laddr, IPV4_VERSION,
5320 5321 ira, connp)))
5321 5322 break;
5322 5323 connp = connp->conn_next;
5323 5324 }
5324 5325 if (connp == NULL) {
5325 5326 /* No more interested clients */
5326 5327 connp = first_connp;
5327 5328 break;
5328 5329 }
5329 5330 if (((mp1 = dupmsg(mp)) == NULL) &&
5330 5331 ((mp1 = copymsg(mp)) == NULL)) {
5331 5332 /* Memory allocation failed */
5332 5333 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5333 5334 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5334 5335 connp = first_connp;
5335 5336 break;
5336 5337 }
5337 5338 CONN_INC_REF(connp);
5338 5339 mutex_exit(&connfp->connf_lock);
5339 5340
5340 5341 IP_STAT(ipst, ip_udp_fanmb);
5341 5342 ip_fanout_udp_conn(connp, mp1, (ipha_t *)mp1->b_rptr,
5342 5343 NULL, ira);
5343 5344 mutex_enter(&connfp->connf_lock);
5344 5345 /* Follow the next pointer before releasing the conn */
5345 5346 next_connp = connp->conn_next;
5346 5347 CONN_DEC_REF(connp);
5347 5348 connp = next_connp;
5348 5349 }
5349 5350 }
5350 5351
5351 5352 /* Last one. Send it upstream. */
5352 5353 mutex_exit(&connfp->connf_lock);
5353 5354 IP_STAT(ipst, ip_udp_fanmb);
5354 5355 ip_fanout_udp_conn(connp, mp, ipha, NULL, ira);
5355 5356 CONN_DEC_REF(connp);
5356 5357 return;
5357 5358
5358 5359 notfound:
5359 5360 mutex_exit(&connfp->connf_lock);
5360 5361 /*
5361 5362 * IPv6 endpoints bound to multicast IPv4-mapped addresses
5362 5363 * have already been matched above, since they live in the IPv4
5363 5364 * fanout tables. This implies we only need to
5364 5365 * check for IPv6 in6addr_any endpoints here.
5365 5366 * Thus we compare using ipv6_all_zeros instead of the destination
5366 5367 * address, except for the multicast group membership lookup which
5367 5368 * uses the IPv4 destination.
5368 5369 */
5369 5370 IN6_IPADDR_TO_V4MAPPED(ipha->ipha_src, &v6faddr);
5370 5371 connfp = &ipst->ips_ipcl_udp_fanout[IPCL_UDP_HASH(lport, ipst)];
5371 5372 mutex_enter(&connfp->connf_lock);
5372 5373 connp = connfp->connf_head;
5373 5374 /*
5374 5375 * IPv4 multicast packet being delivered to an AF_INET6
5375 5376 * in6addr_any endpoint.
5376 5377 * Need to check conn_wantpacket(). Note that we use conn_wantpacket()
5377 5378 * and not conn_wantpacket_v6() since any multicast membership is
5378 5379 * for an IPv4-mapped multicast address.
5379 5380 */
5380 5381 while (connp != NULL) {
5381 5382 if (IPCL_UDP_MATCH_V6(connp, lport, ipv6_all_zeros,
5382 5383 fport, v6faddr) &&
5383 5384 conn_wantpacket(connp, ira, ipha) &&
5384 5385 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5385 5386 tsol_receive_local(mp, &laddr, IPV4_VERSION, ira, connp)))
5386 5387 break;
5387 5388 connp = connp->conn_next;
5388 5389 }
5389 5390
5390 5391 if (connp == NULL) {
5391 5392 /*
5392 5393 * No one bound to this port. Is
5393 5394 * there a client that wants all
5394 5395 * unclaimed datagrams?
5395 5396 */
5396 5397 mutex_exit(&connfp->connf_lock);
5397 5398
5398 5399 if (ipst->ips_ipcl_proto_fanout_v4[IPPROTO_UDP].connf_head !=
5399 5400 NULL) {
5400 5401 ASSERT(ira->ira_protocol == IPPROTO_UDP);
5401 5402 ip_fanout_proto_v4(mp, ipha, ira);
5402 5403 } else {
5403 5404 /*
5404 5405 * We used to attempt to send an icmp error here, but
5405 5406 * since this is known to be a multicast packet
5406 5407 * and we don't send icmp errors in response to
5407 5408 * multicast, just drop the packet and give up sooner.
5408 5409 */
5409 5410 BUMP_MIB(ill->ill_ip_mib, udpIfStatsNoPorts);
5410 5411 freemsg(mp);
5411 5412 }
5412 5413 return;
5413 5414 }
5414 5415 CONN_INC_REF(connp);
5415 5416 ASSERT(IPCL_IS_NONSTR(connp) || connp->conn_rq != NULL);
5416 5417
5417 5418 /*
5418 5419 * If SO_REUSEADDR has been set on the first we send the
5419 5420 * packet to all clients that have joined the group and
5420 5421 * match the port.
5421 5422 */
5422 5423 if (connp->conn_reuseaddr) {
5423 5424 conn_t *first_connp = connp;
5424 5425 conn_t *next_connp;
5425 5426 mblk_t *mp1;
5426 5427
5427 5428 connp = connp->conn_next;
5428 5429 for (;;) {
5429 5430 while (connp != NULL) {
5430 5431 if (IPCL_UDP_MATCH_V6(connp, lport,
5431 5432 ipv6_all_zeros, fport, v6faddr) &&
5432 5433 conn_wantpacket(connp, ira, ipha) &&
5433 5434 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5434 5435 tsol_receive_local(mp, &laddr, IPV4_VERSION,
5435 5436 ira, connp)))
5436 5437 break;
5437 5438 connp = connp->conn_next;
5438 5439 }
5439 5440 if (connp == NULL) {
5440 5441 /* No more interested clients */
5441 5442 connp = first_connp;
5442 5443 break;
5443 5444 }
5444 5445 if (((mp1 = dupmsg(mp)) == NULL) &&
5445 5446 ((mp1 = copymsg(mp)) == NULL)) {
5446 5447 /* Memory allocation failed */
5447 5448 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5448 5449 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5449 5450 connp = first_connp;
5450 5451 break;
5451 5452 }
5452 5453 CONN_INC_REF(connp);
5453 5454 mutex_exit(&connfp->connf_lock);
5454 5455
5455 5456 IP_STAT(ipst, ip_udp_fanmb);
5456 5457 ip_fanout_udp_conn(connp, mp1, (ipha_t *)mp1->b_rptr,
5457 5458 NULL, ira);
5458 5459 mutex_enter(&connfp->connf_lock);
5459 5460 /* Follow the next pointer before releasing the conn */
5460 5461 next_connp = connp->conn_next;
5461 5462 CONN_DEC_REF(connp);
5462 5463 connp = next_connp;
5463 5464 }
5464 5465 }
5465 5466
5466 5467 /* Last one. Send it upstream. */
5467 5468 mutex_exit(&connfp->connf_lock);
5468 5469 IP_STAT(ipst, ip_udp_fanmb);
5469 5470 ip_fanout_udp_conn(connp, mp, ipha, NULL, ira);
5470 5471 CONN_DEC_REF(connp);
5471 5472 }
5472 5473
5473 5474 /*
5474 5475 * Split an incoming packet's IPv4 options into the label and the other options.
5475 5476 * If 'allocate' is set it does memory allocation for the ip_pkt_t, including
5476 5477 * clearing out any leftover label or options.
5477 5478 * Otherwise it just makes ipp point into the packet.
5478 5479 *
5479 5480 * Returns zero if ok; ENOMEM if the buffer couldn't be allocated.
5480 5481 */
5481 5482 int
5482 5483 ip_find_hdr_v4(ipha_t *ipha, ip_pkt_t *ipp, boolean_t allocate)
5483 5484 {
5484 5485 uchar_t *opt;
5485 5486 uint32_t totallen;
5486 5487 uint32_t optval;
5487 5488 uint32_t optlen;
5488 5489
5489 5490 ipp->ipp_fields |= IPPF_HOPLIMIT | IPPF_TCLASS | IPPF_ADDR;
5490 5491 ipp->ipp_hoplimit = ipha->ipha_ttl;
5491 5492 ipp->ipp_type_of_service = ipha->ipha_type_of_service;
5492 5493 IN6_IPADDR_TO_V4MAPPED(ipha->ipha_dst, &ipp->ipp_addr);
5493 5494
5494 5495 /*
5495 5496 * Get length (in 4 byte octets) of IP header options.
5496 5497 */
5497 5498 totallen = ipha->ipha_version_and_hdr_length -
5498 5499 (uint8_t)((IP_VERSION << 4) + IP_SIMPLE_HDR_LENGTH_IN_WORDS);
5499 5500
5500 5501 if (totallen == 0) {
5501 5502 if (!allocate)
5502 5503 return (0);
5503 5504
5504 5505 /* Clear out anything from a previous packet */
5505 5506 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
5506 5507 kmem_free(ipp->ipp_ipv4_options,
5507 5508 ipp->ipp_ipv4_options_len);
5508 5509 ipp->ipp_ipv4_options = NULL;
5509 5510 ipp->ipp_ipv4_options_len = 0;
5510 5511 ipp->ipp_fields &= ~IPPF_IPV4_OPTIONS;
5511 5512 }
5512 5513 if (ipp->ipp_fields & IPPF_LABEL_V4) {
5513 5514 kmem_free(ipp->ipp_label_v4, ipp->ipp_label_len_v4);
5514 5515 ipp->ipp_label_v4 = NULL;
5515 5516 ipp->ipp_label_len_v4 = 0;
5516 5517 ipp->ipp_fields &= ~IPPF_LABEL_V4;
5517 5518 }
5518 5519 return (0);
5519 5520 }
5520 5521
5521 5522 totallen <<= 2;
5522 5523 opt = (uchar_t *)&ipha[1];
5523 5524 if (!is_system_labeled()) {
5524 5525
5525 5526 copyall:
5526 5527 if (!allocate) {
5527 5528 if (totallen != 0) {
5528 5529 ipp->ipp_ipv4_options = opt;
5529 5530 ipp->ipp_ipv4_options_len = totallen;
5530 5531 ipp->ipp_fields |= IPPF_IPV4_OPTIONS;
5531 5532 }
5532 5533 return (0);
5533 5534 }
5534 5535 /* Just copy all of options */
5535 5536 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
5536 5537 if (totallen == ipp->ipp_ipv4_options_len) {
5537 5538 bcopy(opt, ipp->ipp_ipv4_options, totallen);
5538 5539 return (0);
5539 5540 }
5540 5541 kmem_free(ipp->ipp_ipv4_options,
5541 5542 ipp->ipp_ipv4_options_len);
5542 5543 ipp->ipp_ipv4_options = NULL;
5543 5544 ipp->ipp_ipv4_options_len = 0;
5544 5545 ipp->ipp_fields &= ~IPPF_IPV4_OPTIONS;
5545 5546 }
5546 5547 if (totallen == 0)
5547 5548 return (0);
5548 5549
5549 5550 ipp->ipp_ipv4_options = kmem_alloc(totallen, KM_NOSLEEP);
5550 5551 if (ipp->ipp_ipv4_options == NULL)
5551 5552 return (ENOMEM);
5552 5553 ipp->ipp_ipv4_options_len = totallen;
5553 5554 ipp->ipp_fields |= IPPF_IPV4_OPTIONS;
5554 5555 bcopy(opt, ipp->ipp_ipv4_options, totallen);
5555 5556 return (0);
5556 5557 }
5557 5558
5558 5559 if (allocate && (ipp->ipp_fields & IPPF_LABEL_V4)) {
5559 5560 kmem_free(ipp->ipp_label_v4, ipp->ipp_label_len_v4);
5560 5561 ipp->ipp_label_v4 = NULL;
5561 5562 ipp->ipp_label_len_v4 = 0;
5562 5563 ipp->ipp_fields &= ~IPPF_LABEL_V4;
5563 5564 }
5564 5565
5565 5566 /*
5566 5567 * Search for CIPSO option.
5567 5568 * We assume CIPSO is first in options if it is present.
5568 5569 * If it isn't, then ipp_opt_ipv4_options will not include the options
5569 5570 * prior to the CIPSO option.
5570 5571 */
5571 5572 while (totallen != 0) {
5572 5573 switch (optval = opt[IPOPT_OPTVAL]) {
5573 5574 case IPOPT_EOL:
5574 5575 return (0);
5575 5576 case IPOPT_NOP:
5576 5577 optlen = 1;
5577 5578 break;
5578 5579 default:
5579 5580 if (totallen <= IPOPT_OLEN)
5580 5581 return (EINVAL);
5581 5582 optlen = opt[IPOPT_OLEN];
5582 5583 if (optlen < 2)
5583 5584 return (EINVAL);
5584 5585 }
5585 5586 if (optlen > totallen)
5586 5587 return (EINVAL);
5587 5588
5588 5589 switch (optval) {
5589 5590 case IPOPT_COMSEC:
5590 5591 if (!allocate) {
5591 5592 ipp->ipp_label_v4 = opt;
5592 5593 ipp->ipp_label_len_v4 = optlen;
5593 5594 ipp->ipp_fields |= IPPF_LABEL_V4;
5594 5595 } else {
5595 5596 ipp->ipp_label_v4 = kmem_alloc(optlen,
5596 5597 KM_NOSLEEP);
5597 5598 if (ipp->ipp_label_v4 == NULL)
5598 5599 return (ENOMEM);
5599 5600 ipp->ipp_label_len_v4 = optlen;
5600 5601 ipp->ipp_fields |= IPPF_LABEL_V4;
5601 5602 bcopy(opt, ipp->ipp_label_v4, optlen);
5602 5603 }
5603 5604 totallen -= optlen;
5604 5605 opt += optlen;
5605 5606
5606 5607 /* Skip padding bytes until we get to a multiple of 4 */
5607 5608 while ((totallen & 3) != 0 && opt[0] == IPOPT_NOP) {
5608 5609 totallen--;
5609 5610 opt++;
5610 5611 }
5611 5612 /* Remaining as ipp_ipv4_options */
5612 5613 goto copyall;
5613 5614 }
5614 5615 totallen -= optlen;
5615 5616 opt += optlen;
5616 5617 }
5617 5618 /* No CIPSO found; return everything as ipp_ipv4_options */
5618 5619 totallen = ipha->ipha_version_and_hdr_length -
5619 5620 (uint8_t)((IP_VERSION << 4) + IP_SIMPLE_HDR_LENGTH_IN_WORDS);
5620 5621 totallen <<= 2;
5621 5622 opt = (uchar_t *)&ipha[1];
5622 5623 goto copyall;
5623 5624 }
5624 5625
5625 5626 /*
5626 5627 * Efficient versions of lookup for an IRE when we only
5627 5628 * match the address.
5628 5629 * For RTF_REJECT or BLACKHOLE we return IRE_NOROUTE.
5629 5630 * Does not handle multicast addresses.
5630 5631 */
5631 5632 uint_t
5632 5633 ip_type_v4(ipaddr_t addr, ip_stack_t *ipst)
5633 5634 {
5634 5635 ire_t *ire;
5635 5636 uint_t result;
5636 5637
5637 5638 ire = ire_ftable_lookup_simple_v4(addr, 0, ipst, NULL);
5638 5639 ASSERT(ire != NULL);
5639 5640 if (ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))
5640 5641 result = IRE_NOROUTE;
5641 5642 else
5642 5643 result = ire->ire_type;
5643 5644 ire_refrele(ire);
5644 5645 return (result);
5645 5646 }
5646 5647
5647 5648 /*
5648 5649 * Efficient versions of lookup for an IRE when we only
5649 5650 * match the address.
5650 5651 * For RTF_REJECT or BLACKHOLE we return IRE_NOROUTE.
5651 5652 * Does not handle multicast addresses.
5652 5653 */
5653 5654 uint_t
5654 5655 ip_type_v6(const in6_addr_t *addr, ip_stack_t *ipst)
5655 5656 {
5656 5657 ire_t *ire;
5657 5658 uint_t result;
5658 5659
5659 5660 ire = ire_ftable_lookup_simple_v6(addr, 0, ipst, NULL);
5660 5661 ASSERT(ire != NULL);
5661 5662 if (ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))
5662 5663 result = IRE_NOROUTE;
5663 5664 else
5664 5665 result = ire->ire_type;
5665 5666 ire_refrele(ire);
5666 5667 return (result);
5667 5668 }
5668 5669
5669 5670 /*
5670 5671 * Nobody should be sending
5671 5672 * packets up this stream
5672 5673 */
5673 5674 static int
5674 5675 ip_lrput(queue_t *q, mblk_t *mp)
5675 5676 {
5676 5677 switch (mp->b_datap->db_type) {
5677 5678 case M_FLUSH:
5678 5679 /* Turn around */
5679 5680 if (*mp->b_rptr & FLUSHW) {
5680 5681 *mp->b_rptr &= ~FLUSHR;
5681 5682 qreply(q, mp);
5682 5683 return (0);
5683 5684 }
5684 5685 break;
5685 5686 }
5686 5687 freemsg(mp);
5687 5688 return (0);
5688 5689 }
5689 5690
5690 5691 /* Nobody should be sending packets down this stream */
5691 5692 /* ARGSUSED */
5692 5693 int
5693 5694 ip_lwput(queue_t *q, mblk_t *mp)
5694 5695 {
5695 5696 freemsg(mp);
5696 5697 return (0);
5697 5698 }
5698 5699
5699 5700 /*
5700 5701 * Move the first hop in any source route to ipha_dst and remove that part of
5701 5702 * the source route. Called by other protocols. Errors in option formatting
5702 5703 * are ignored - will be handled by ip_output_options. Return the final
5703 5704 * destination (either ipha_dst or the last entry in a source route.)
5704 5705 */
5705 5706 ipaddr_t
5706 5707 ip_massage_options(ipha_t *ipha, netstack_t *ns)
5707 5708 {
5708 5709 ipoptp_t opts;
5709 5710 uchar_t *opt;
5710 5711 uint8_t optval;
5711 5712 uint8_t optlen;
5712 5713 ipaddr_t dst;
5713 5714 int i;
5714 5715 ip_stack_t *ipst = ns->netstack_ip;
5715 5716
5716 5717 ip2dbg(("ip_massage_options\n"));
5717 5718 dst = ipha->ipha_dst;
5718 5719 for (optval = ipoptp_first(&opts, ipha);
5719 5720 optval != IPOPT_EOL;
5720 5721 optval = ipoptp_next(&opts)) {
5721 5722 opt = opts.ipoptp_cur;
5722 5723 switch (optval) {
5723 5724 uint8_t off;
5724 5725 case IPOPT_SSRR:
5725 5726 case IPOPT_LSRR:
5726 5727 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
5727 5728 ip1dbg(("ip_massage_options: bad src route\n"));
5728 5729 break;
5729 5730 }
5730 5731 optlen = opts.ipoptp_len;
5731 5732 off = opt[IPOPT_OFFSET];
5732 5733 off--;
5733 5734 redo_srr:
5734 5735 if (optlen < IP_ADDR_LEN ||
5735 5736 off > optlen - IP_ADDR_LEN) {
5736 5737 /* End of source route */
5737 5738 ip1dbg(("ip_massage_options: end of SR\n"));
5738 5739 break;
5739 5740 }
5740 5741 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
5741 5742 ip1dbg(("ip_massage_options: next hop 0x%x\n",
5742 5743 ntohl(dst)));
5743 5744 /*
5744 5745 * Check if our address is present more than
5745 5746 * once as consecutive hops in source route.
5746 5747 * XXX verify per-interface ip_forwarding
5747 5748 * for source route?
5748 5749 */
5749 5750 if (ip_type_v4(dst, ipst) == IRE_LOCAL) {
5750 5751 off += IP_ADDR_LEN;
5751 5752 goto redo_srr;
5752 5753 }
5753 5754 if (dst == htonl(INADDR_LOOPBACK)) {
5754 5755 ip1dbg(("ip_massage_options: loopback addr in "
5755 5756 "source route!\n"));
5756 5757 break;
5757 5758 }
5758 5759 /*
5759 5760 * Update ipha_dst to be the first hop and remove the
5760 5761 * first hop from the source route (by overwriting
5761 5762 * part of the option with NOP options).
5762 5763 */
5763 5764 ipha->ipha_dst = dst;
5764 5765 /* Put the last entry in dst */
5765 5766 off = ((optlen - IP_ADDR_LEN - 3) & ~(IP_ADDR_LEN-1)) +
5766 5767 3;
5767 5768 bcopy(&opt[off], &dst, IP_ADDR_LEN);
5768 5769
5769 5770 ip1dbg(("ip_massage_options: last hop 0x%x\n",
5770 5771 ntohl(dst)));
5771 5772 /* Move down and overwrite */
5772 5773 opt[IP_ADDR_LEN] = opt[0];
5773 5774 opt[IP_ADDR_LEN+1] = opt[IPOPT_OLEN] - IP_ADDR_LEN;
5774 5775 opt[IP_ADDR_LEN+2] = opt[IPOPT_OFFSET];
5775 5776 for (i = 0; i < IP_ADDR_LEN; i++)
5776 5777 opt[i] = IPOPT_NOP;
5777 5778 break;
5778 5779 }
5779 5780 }
5780 5781 return (dst);
5781 5782 }
5782 5783
5783 5784 /*
5784 5785 * Return the network mask
5785 5786 * associated with the specified address.
5786 5787 */
5787 5788 ipaddr_t
5788 5789 ip_net_mask(ipaddr_t addr)
5789 5790 {
5790 5791 uchar_t *up = (uchar_t *)&addr;
5791 5792 ipaddr_t mask = 0;
5792 5793 uchar_t *maskp = (uchar_t *)&mask;
5793 5794
5794 5795 #if defined(__i386) || defined(__amd64)
5795 5796 #define TOTALLY_BRAIN_DAMAGED_C_COMPILER
5796 5797 #endif
5797 5798 #ifdef TOTALLY_BRAIN_DAMAGED_C_COMPILER
5798 5799 maskp[0] = maskp[1] = maskp[2] = maskp[3] = 0;
5799 5800 #endif
5800 5801 if (CLASSD(addr)) {
5801 5802 maskp[0] = 0xF0;
5802 5803 return (mask);
5803 5804 }
5804 5805
5805 5806 /* We assume Class E default netmask to be 32 */
5806 5807 if (CLASSE(addr))
5807 5808 return (0xffffffffU);
5808 5809
5809 5810 if (addr == 0)
5810 5811 return (0);
5811 5812 maskp[0] = 0xFF;
5812 5813 if ((up[0] & 0x80) == 0)
5813 5814 return (mask);
5814 5815
5815 5816 maskp[1] = 0xFF;
5816 5817 if ((up[0] & 0xC0) == 0x80)
5817 5818 return (mask);
5818 5819
5819 5820 maskp[2] = 0xFF;
5820 5821 if ((up[0] & 0xE0) == 0xC0)
5821 5822 return (mask);
5822 5823
5823 5824 /* Otherwise return no mask */
5824 5825 return ((ipaddr_t)0);
5825 5826 }
5826 5827
5827 5828 /* Name/Value Table Lookup Routine */
5828 5829 char *
5829 5830 ip_nv_lookup(nv_t *nv, int value)
5830 5831 {
5831 5832 if (!nv)
5832 5833 return (NULL);
5833 5834 for (; nv->nv_name; nv++) {
5834 5835 if (nv->nv_value == value)
5835 5836 return (nv->nv_name);
5836 5837 }
5837 5838 return ("unknown");
5838 5839 }
5839 5840
5840 5841 static int
5841 5842 ip_wait_for_info_ack(ill_t *ill)
5842 5843 {
5843 5844 int err;
5844 5845
5845 5846 mutex_enter(&ill->ill_lock);
5846 5847 while (ill->ill_state_flags & ILL_LL_SUBNET_PENDING) {
5847 5848 /*
5848 5849 * Return value of 0 indicates a pending signal.
5849 5850 */
5850 5851 err = cv_wait_sig(&ill->ill_cv, &ill->ill_lock);
5851 5852 if (err == 0) {
5852 5853 mutex_exit(&ill->ill_lock);
5853 5854 return (EINTR);
5854 5855 }
5855 5856 }
5856 5857 mutex_exit(&ill->ill_lock);
5857 5858 /*
5858 5859 * ip_rput_other could have set an error in ill_error on
5859 5860 * receipt of M_ERROR.
5860 5861 */
5861 5862 return (ill->ill_error);
5862 5863 }
5863 5864
5864 5865 /*
5865 5866 * This is a module open, i.e. this is a control stream for access
5866 5867 * to a DLPI device. We allocate an ill_t as the instance data in
5867 5868 * this case.
5868 5869 */
5869 5870 static int
5870 5871 ip_modopen(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp)
5871 5872 {
5872 5873 ill_t *ill;
5873 5874 int err;
5874 5875 zoneid_t zoneid;
5875 5876 netstack_t *ns;
5876 5877 ip_stack_t *ipst;
5877 5878
5878 5879 /*
5879 5880 * Prevent unprivileged processes from pushing IP so that
5880 5881 * they can't send raw IP.
5881 5882 */
5882 5883 if (secpolicy_net_rawaccess(credp) != 0)
5883 5884 return (EPERM);
5884 5885
5885 5886 ns = netstack_find_by_cred(credp);
5886 5887 ASSERT(ns != NULL);
5887 5888 ipst = ns->netstack_ip;
5888 5889 ASSERT(ipst != NULL);
5889 5890
5890 5891 /*
5891 5892 * For exclusive stacks we set the zoneid to zero
5892 5893 * to make IP operate as if in the global zone.
5893 5894 */
5894 5895 if (ipst->ips_netstack->netstack_stackid != GLOBAL_NETSTACKID)
5895 5896 zoneid = GLOBAL_ZONEID;
5896 5897 else
5897 5898 zoneid = crgetzoneid(credp);
5898 5899
5899 5900 ill = (ill_t *)mi_open_alloc_sleep(sizeof (ill_t));
5900 5901 q->q_ptr = WR(q)->q_ptr = ill;
5901 5902 ill->ill_ipst = ipst;
5902 5903 ill->ill_zoneid = zoneid;
5903 5904
5904 5905 /*
5905 5906 * ill_init initializes the ill fields and then sends down
5906 5907 * down a DL_INFO_REQ after calling qprocson.
5907 5908 */
5908 5909 err = ill_init(q, ill);
5909 5910
5910 5911 if (err != 0) {
5911 5912 mi_free(ill);
5912 5913 netstack_rele(ipst->ips_netstack);
5913 5914 q->q_ptr = NULL;
5914 5915 WR(q)->q_ptr = NULL;
5915 5916 return (err);
5916 5917 }
5917 5918
5918 5919 /*
5919 5920 * Wait for the DL_INFO_ACK if a DL_INFO_REQ was sent.
5920 5921 *
5921 5922 * ill_init initializes the ipsq marking this thread as
5922 5923 * writer
5923 5924 */
5924 5925 ipsq_exit(ill->ill_phyint->phyint_ipsq);
5925 5926 err = ip_wait_for_info_ack(ill);
5926 5927 if (err == 0)
5927 5928 ill->ill_credp = credp;
5928 5929 else
5929 5930 goto fail;
5930 5931
5931 5932 crhold(credp);
5932 5933
5933 5934 mutex_enter(&ipst->ips_ip_mi_lock);
5934 5935 err = mi_open_link(&ipst->ips_ip_g_head, (IDP)q->q_ptr, devp, flag,
5935 5936 sflag, credp);
5936 5937 mutex_exit(&ipst->ips_ip_mi_lock);
5937 5938 fail:
5938 5939 if (err) {
5939 5940 (void) ip_close(q, 0, credp);
5940 5941 return (err);
5941 5942 }
5942 5943 return (0);
5943 5944 }
5944 5945
5945 5946 /* For /dev/ip aka AF_INET open */
5946 5947 int
5947 5948 ip_openv4(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp)
5948 5949 {
5949 5950 return (ip_open(q, devp, flag, sflag, credp, B_FALSE));
5950 5951 }
5951 5952
5952 5953 /* For /dev/ip6 aka AF_INET6 open */
5953 5954 int
5954 5955 ip_openv6(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp)
5955 5956 {
5956 5957 return (ip_open(q, devp, flag, sflag, credp, B_TRUE));
5957 5958 }
5958 5959
5959 5960 /* IP open routine. */
5960 5961 int
5961 5962 ip_open(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp,
5962 5963 boolean_t isv6)
5963 5964 {
5964 5965 conn_t *connp;
5965 5966 major_t maj;
5966 5967 zoneid_t zoneid;
5967 5968 netstack_t *ns;
5968 5969 ip_stack_t *ipst;
5969 5970
5970 5971 /* Allow reopen. */
5971 5972 if (q->q_ptr != NULL)
5972 5973 return (0);
5973 5974
5974 5975 if (sflag & MODOPEN) {
5975 5976 /* This is a module open */
5976 5977 return (ip_modopen(q, devp, flag, sflag, credp));
5977 5978 }
5978 5979
5979 5980 if ((flag & ~(FKLYR)) == IP_HELPER_STR) {
5980 5981 /*
5981 5982 * Non streams based socket looking for a stream
5982 5983 * to access IP
5983 5984 */
5984 5985 return (ip_helper_stream_setup(q, devp, flag, sflag,
5985 5986 credp, isv6));
5986 5987 }
5987 5988
5988 5989 ns = netstack_find_by_cred(credp);
5989 5990 ASSERT(ns != NULL);
5990 5991 ipst = ns->netstack_ip;
5991 5992 ASSERT(ipst != NULL);
5992 5993
5993 5994 /*
5994 5995 * For exclusive stacks we set the zoneid to zero
5995 5996 * to make IP operate as if in the global zone.
5996 5997 */
5997 5998 if (ipst->ips_netstack->netstack_stackid != GLOBAL_NETSTACKID)
5998 5999 zoneid = GLOBAL_ZONEID;
5999 6000 else
6000 6001 zoneid = crgetzoneid(credp);
6001 6002
6002 6003 /*
6003 6004 * We are opening as a device. This is an IP client stream, and we
6004 6005 * allocate an conn_t as the instance data.
6005 6006 */
6006 6007 connp = ipcl_conn_create(IPCL_IPCCONN, KM_SLEEP, ipst->ips_netstack);
6007 6008
6008 6009 /*
6009 6010 * ipcl_conn_create did a netstack_hold. Undo the hold that was
6010 6011 * done by netstack_find_by_cred()
6011 6012 */
6012 6013 netstack_rele(ipst->ips_netstack);
6013 6014
6014 6015 connp->conn_ixa->ixa_flags |= IXAF_MULTICAST_LOOP | IXAF_SET_ULP_CKSUM;
6015 6016 /* conn_allzones can not be set this early, hence no IPCL_ZONEID */
6016 6017 connp->conn_ixa->ixa_zoneid = zoneid;
6017 6018 connp->conn_zoneid = zoneid;
6018 6019
6019 6020 connp->conn_rq = q;
6020 6021 q->q_ptr = WR(q)->q_ptr = connp;
6021 6022
6022 6023 /* Minor tells us which /dev entry was opened */
6023 6024 if (isv6) {
6024 6025 connp->conn_family = AF_INET6;
6025 6026 connp->conn_ipversion = IPV6_VERSION;
6026 6027 connp->conn_ixa->ixa_flags &= ~IXAF_IS_IPV4;
6027 6028 connp->conn_ixa->ixa_src_preferences = IPV6_PREFER_SRC_DEFAULT;
6028 6029 } else {
6029 6030 connp->conn_family = AF_INET;
6030 6031 connp->conn_ipversion = IPV4_VERSION;
6031 6032 connp->conn_ixa->ixa_flags |= IXAF_IS_IPV4;
6032 6033 }
6033 6034
6034 6035 if ((ip_minor_arena_la != NULL) && (flag & SO_SOCKSTR) &&
6035 6036 ((connp->conn_dev = inet_minor_alloc(ip_minor_arena_la)) != 0)) {
6036 6037 connp->conn_minor_arena = ip_minor_arena_la;
6037 6038 } else {
6038 6039 /*
6039 6040 * Either minor numbers in the large arena were exhausted
6040 6041 * or a non socket application is doing the open.
6041 6042 * Try to allocate from the small arena.
6042 6043 */
6043 6044 if ((connp->conn_dev =
6044 6045 inet_minor_alloc(ip_minor_arena_sa)) == 0) {
6045 6046 /* CONN_DEC_REF takes care of netstack_rele() */
6046 6047 q->q_ptr = WR(q)->q_ptr = NULL;
6047 6048 CONN_DEC_REF(connp);
6048 6049 return (EBUSY);
6049 6050 }
6050 6051 connp->conn_minor_arena = ip_minor_arena_sa;
6051 6052 }
6052 6053
6053 6054 maj = getemajor(*devp);
6054 6055 *devp = makedevice(maj, (minor_t)connp->conn_dev);
6055 6056
6056 6057 /*
6057 6058 * connp->conn_cred is crfree()ed in ipcl_conn_destroy()
6058 6059 */
6059 6060 connp->conn_cred = credp;
6060 6061 connp->conn_cpid = curproc->p_pid;
6061 6062 /* Cache things in ixa without an extra refhold */
6062 6063 ASSERT(!(connp->conn_ixa->ixa_free_flags & IXA_FREE_CRED));
6063 6064 connp->conn_ixa->ixa_cred = connp->conn_cred;
6064 6065 connp->conn_ixa->ixa_cpid = connp->conn_cpid;
6065 6066 if (is_system_labeled())
6066 6067 connp->conn_ixa->ixa_tsl = crgetlabel(connp->conn_cred);
6067 6068
6068 6069 /*
6069 6070 * Handle IP_IOC_RTS_REQUEST and other ioctls which use conn_recv
6070 6071 */
6071 6072 connp->conn_recv = ip_conn_input;
6072 6073 connp->conn_recvicmp = ip_conn_input_icmp;
6073 6074
6074 6075 crhold(connp->conn_cred);
6075 6076
6076 6077 /*
6077 6078 * If the caller has the process-wide flag set, then default to MAC
6078 6079 * exempt mode. This allows read-down to unlabeled hosts.
6079 6080 */
6080 6081 if (getpflags(NET_MAC_AWARE, credp) != 0)
6081 6082 connp->conn_mac_mode = CONN_MAC_AWARE;
6082 6083
6083 6084 connp->conn_zone_is_global = (crgetzoneid(credp) == GLOBAL_ZONEID);
6084 6085
6085 6086 connp->conn_rq = q;
6086 6087 connp->conn_wq = WR(q);
6087 6088
6088 6089 /* Non-zero default values */
6089 6090 connp->conn_ixa->ixa_flags |= IXAF_MULTICAST_LOOP;
6090 6091
6091 6092 /*
6092 6093 * Make the conn globally visible to walkers
6093 6094 */
6094 6095 ASSERT(connp->conn_ref == 1);
6095 6096 mutex_enter(&connp->conn_lock);
6096 6097 connp->conn_state_flags &= ~CONN_INCIPIENT;
6097 6098 mutex_exit(&connp->conn_lock);
6098 6099
6099 6100 qprocson(q);
6100 6101
6101 6102 return (0);
6102 6103 }
6103 6104
6104 6105 /*
6105 6106 * Set IPsec policy from an ipsec_req_t. If the req is not "zero" and valid,
6106 6107 * all of them are copied to the conn_t. If the req is "zero", the policy is
6107 6108 * zeroed out. A "zero" policy has zero ipsr_{ah,req,self_encap}_req
6108 6109 * fields.
6109 6110 * We keep only the latest setting of the policy and thus policy setting
6110 6111 * is not incremental/cumulative.
6111 6112 *
6112 6113 * Requests to set policies with multiple alternative actions will
6113 6114 * go through a different API.
6114 6115 */
6115 6116 int
6116 6117 ipsec_set_req(cred_t *cr, conn_t *connp, ipsec_req_t *req)
6117 6118 {
6118 6119 uint_t ah_req = 0;
6119 6120 uint_t esp_req = 0;
6120 6121 uint_t se_req = 0;
6121 6122 ipsec_act_t *actp = NULL;
6122 6123 uint_t nact;
6123 6124 ipsec_policy_head_t *ph;
6124 6125 boolean_t is_pol_reset, is_pol_inserted = B_FALSE;
6125 6126 int error = 0;
6126 6127 netstack_t *ns = connp->conn_netstack;
6127 6128 ip_stack_t *ipst = ns->netstack_ip;
6128 6129 ipsec_stack_t *ipss = ns->netstack_ipsec;
6129 6130
6130 6131 #define REQ_MASK (IPSEC_PREF_REQUIRED|IPSEC_PREF_NEVER)
6131 6132
6132 6133 /*
6133 6134 * The IP_SEC_OPT option does not allow variable length parameters,
6134 6135 * hence a request cannot be NULL.
6135 6136 */
6136 6137 if (req == NULL)
6137 6138 return (EINVAL);
6138 6139
6139 6140 ah_req = req->ipsr_ah_req;
6140 6141 esp_req = req->ipsr_esp_req;
6141 6142 se_req = req->ipsr_self_encap_req;
6142 6143
6143 6144 /* Don't allow setting self-encap without one or more of AH/ESP. */
6144 6145 if (se_req != 0 && esp_req == 0 && ah_req == 0)
6145 6146 return (EINVAL);
6146 6147
6147 6148 /*
6148 6149 * Are we dealing with a request to reset the policy (i.e.
6149 6150 * zero requests).
6150 6151 */
6151 6152 is_pol_reset = ((ah_req & REQ_MASK) == 0 &&
6152 6153 (esp_req & REQ_MASK) == 0 &&
6153 6154 (se_req & REQ_MASK) == 0);
6154 6155
6155 6156 if (!is_pol_reset) {
6156 6157 /*
6157 6158 * If we couldn't load IPsec, fail with "protocol
6158 6159 * not supported".
6159 6160 * IPsec may not have been loaded for a request with zero
6160 6161 * policies, so we don't fail in this case.
6161 6162 */
6162 6163 mutex_enter(&ipss->ipsec_loader_lock);
6163 6164 if (ipss->ipsec_loader_state != IPSEC_LOADER_SUCCEEDED) {
6164 6165 mutex_exit(&ipss->ipsec_loader_lock);
6165 6166 return (EPROTONOSUPPORT);
6166 6167 }
6167 6168 mutex_exit(&ipss->ipsec_loader_lock);
6168 6169
6169 6170 /*
6170 6171 * Test for valid requests. Invalid algorithms
6171 6172 * need to be tested by IPsec code because new
6172 6173 * algorithms can be added dynamically.
6173 6174 */
6174 6175 if ((ah_req & ~(REQ_MASK|IPSEC_PREF_UNIQUE)) != 0 ||
6175 6176 (esp_req & ~(REQ_MASK|IPSEC_PREF_UNIQUE)) != 0 ||
6176 6177 (se_req & ~(REQ_MASK|IPSEC_PREF_UNIQUE)) != 0) {
6177 6178 return (EINVAL);
6178 6179 }
6179 6180
6180 6181 /*
6181 6182 * Only privileged users can issue these
6182 6183 * requests.
6183 6184 */
6184 6185 if (((ah_req & IPSEC_PREF_NEVER) ||
6185 6186 (esp_req & IPSEC_PREF_NEVER) ||
6186 6187 (se_req & IPSEC_PREF_NEVER)) &&
6187 6188 secpolicy_ip_config(cr, B_FALSE) != 0) {
6188 6189 return (EPERM);
6189 6190 }
6190 6191
6191 6192 /*
6192 6193 * The IPSEC_PREF_REQUIRED and IPSEC_PREF_NEVER
6193 6194 * are mutually exclusive.
6194 6195 */
6195 6196 if (((ah_req & REQ_MASK) == REQ_MASK) ||
6196 6197 ((esp_req & REQ_MASK) == REQ_MASK) ||
6197 6198 ((se_req & REQ_MASK) == REQ_MASK)) {
6198 6199 /* Both of them are set */
6199 6200 return (EINVAL);
6200 6201 }
6201 6202 }
6202 6203
6203 6204 ASSERT(MUTEX_HELD(&connp->conn_lock));
6204 6205
6205 6206 /*
6206 6207 * If we have already cached policies in conn_connect(), don't
6207 6208 * let them change now. We cache policies for connections
6208 6209 * whose src,dst [addr, port] is known.
6209 6210 */
6210 6211 if (connp->conn_policy_cached) {
6211 6212 return (EINVAL);
6212 6213 }
6213 6214
6214 6215 /*
6215 6216 * We have a zero policies, reset the connection policy if already
6216 6217 * set. This will cause the connection to inherit the
6217 6218 * global policy, if any.
6218 6219 */
6219 6220 if (is_pol_reset) {
6220 6221 if (connp->conn_policy != NULL) {
6221 6222 IPPH_REFRELE(connp->conn_policy, ipst->ips_netstack);
6222 6223 connp->conn_policy = NULL;
6223 6224 }
6224 6225 connp->conn_in_enforce_policy = B_FALSE;
6225 6226 connp->conn_out_enforce_policy = B_FALSE;
6226 6227 return (0);
6227 6228 }
6228 6229
6229 6230 ph = connp->conn_policy = ipsec_polhead_split(connp->conn_policy,
6230 6231 ipst->ips_netstack);
6231 6232 if (ph == NULL)
6232 6233 goto enomem;
6233 6234
6234 6235 ipsec_actvec_from_req(req, &actp, &nact, ipst->ips_netstack);
6235 6236 if (actp == NULL)
6236 6237 goto enomem;
6237 6238
6238 6239 /*
6239 6240 * Always insert IPv4 policy entries, since they can also apply to
6240 6241 * ipv6 sockets being used in ipv4-compat mode.
6241 6242 */
6242 6243 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V4,
6243 6244 IPSEC_TYPE_INBOUND, ns))
6244 6245 goto enomem;
6245 6246 is_pol_inserted = B_TRUE;
6246 6247 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V4,
6247 6248 IPSEC_TYPE_OUTBOUND, ns))
6248 6249 goto enomem;
6249 6250
6250 6251 /*
6251 6252 * We're looking at a v6 socket, also insert the v6-specific
6252 6253 * entries.
6253 6254 */
6254 6255 if (connp->conn_family == AF_INET6) {
6255 6256 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V6,
6256 6257 IPSEC_TYPE_INBOUND, ns))
6257 6258 goto enomem;
6258 6259 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V6,
6259 6260 IPSEC_TYPE_OUTBOUND, ns))
6260 6261 goto enomem;
6261 6262 }
6262 6263
6263 6264 ipsec_actvec_free(actp, nact);
6264 6265
6265 6266 /*
6266 6267 * If the requests need security, set enforce_policy.
6267 6268 * If the requests are IPSEC_PREF_NEVER, one should
6268 6269 * still set conn_out_enforce_policy so that ip_set_destination
6269 6270 * marks the ip_xmit_attr_t appropriatly. This is needed so that
6270 6271 * for connections that we don't cache policy in at connect time,
6271 6272 * if global policy matches in ip_output_attach_policy, we
6272 6273 * don't wrongly inherit global policy. Similarly, we need
6273 6274 * to set conn_in_enforce_policy also so that we don't verify
6274 6275 * policy wrongly.
6275 6276 */
6276 6277 if ((ah_req & REQ_MASK) != 0 ||
6277 6278 (esp_req & REQ_MASK) != 0 ||
6278 6279 (se_req & REQ_MASK) != 0) {
6279 6280 connp->conn_in_enforce_policy = B_TRUE;
6280 6281 connp->conn_out_enforce_policy = B_TRUE;
6281 6282 }
6282 6283
6283 6284 return (error);
6284 6285 #undef REQ_MASK
6285 6286
6286 6287 /*
6287 6288 * Common memory-allocation-failure exit path.
6288 6289 */
6289 6290 enomem:
6290 6291 if (actp != NULL)
6291 6292 ipsec_actvec_free(actp, nact);
6292 6293 if (is_pol_inserted)
6293 6294 ipsec_polhead_flush(ph, ns);
6294 6295 return (ENOMEM);
6295 6296 }
6296 6297
6297 6298 /*
6298 6299 * Set socket options for joining and leaving multicast groups.
6299 6300 * Common to IPv4 and IPv6; inet6 indicates the type of socket.
6300 6301 * The caller has already check that the option name is consistent with
6301 6302 * the address family of the socket.
6302 6303 */
6303 6304 int
6304 6305 ip_opt_set_multicast_group(conn_t *connp, t_scalar_t name,
6305 6306 uchar_t *invalp, boolean_t inet6, boolean_t checkonly)
6306 6307 {
6307 6308 int *i1 = (int *)invalp;
6308 6309 int error = 0;
6309 6310 ip_stack_t *ipst = connp->conn_netstack->netstack_ip;
6310 6311 struct ip_mreq *v4_mreqp;
6311 6312 struct ipv6_mreq *v6_mreqp;
6312 6313 struct group_req *greqp;
6313 6314 ire_t *ire;
6314 6315 boolean_t done = B_FALSE;
6315 6316 ipaddr_t ifaddr;
6316 6317 in6_addr_t v6group;
6317 6318 uint_t ifindex;
6318 6319 boolean_t mcast_opt = B_TRUE;
6319 6320 mcast_record_t fmode;
6320 6321 int (*optfn)(conn_t *, boolean_t, const in6_addr_t *,
6321 6322 ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *);
6322 6323
6323 6324 switch (name) {
6324 6325 case IP_ADD_MEMBERSHIP:
6325 6326 case IPV6_JOIN_GROUP:
6326 6327 mcast_opt = B_FALSE;
6327 6328 /* FALLTHROUGH */
6328 6329 case MCAST_JOIN_GROUP:
6329 6330 fmode = MODE_IS_EXCLUDE;
6330 6331 optfn = ip_opt_add_group;
6331 6332 break;
6332 6333
6333 6334 case IP_DROP_MEMBERSHIP:
6334 6335 case IPV6_LEAVE_GROUP:
6335 6336 mcast_opt = B_FALSE;
6336 6337 /* FALLTHROUGH */
6337 6338 case MCAST_LEAVE_GROUP:
6338 6339 fmode = MODE_IS_INCLUDE;
6339 6340 optfn = ip_opt_delete_group;
6340 6341 break;
6341 6342 default:
6342 6343 /* Should not be reached. */
6343 6344 fmode = MODE_IS_INCLUDE;
6344 6345 optfn = NULL;
6345 6346 ASSERT(0);
6346 6347 }
6347 6348
6348 6349 if (mcast_opt) {
6349 6350 struct sockaddr_in *sin;
6350 6351 struct sockaddr_in6 *sin6;
6351 6352
6352 6353 greqp = (struct group_req *)i1;
6353 6354 if (greqp->gr_group.ss_family == AF_INET) {
6354 6355 sin = (struct sockaddr_in *)&(greqp->gr_group);
6355 6356 IN6_INADDR_TO_V4MAPPED(&sin->sin_addr, &v6group);
6356 6357 } else {
6357 6358 if (!inet6)
6358 6359 return (EINVAL); /* Not on INET socket */
6359 6360
6360 6361 sin6 = (struct sockaddr_in6 *)&(greqp->gr_group);
6361 6362 v6group = sin6->sin6_addr;
6362 6363 }
6363 6364 ifaddr = INADDR_ANY;
6364 6365 ifindex = greqp->gr_interface;
6365 6366 } else if (inet6) {
6366 6367 v6_mreqp = (struct ipv6_mreq *)i1;
6367 6368 v6group = v6_mreqp->ipv6mr_multiaddr;
6368 6369 ifaddr = INADDR_ANY;
6369 6370 ifindex = v6_mreqp->ipv6mr_interface;
6370 6371 } else {
6371 6372 v4_mreqp = (struct ip_mreq *)i1;
6372 6373 IN6_INADDR_TO_V4MAPPED(&v4_mreqp->imr_multiaddr, &v6group);
6373 6374 ifaddr = (ipaddr_t)v4_mreqp->imr_interface.s_addr;
6374 6375 ifindex = 0;
6375 6376 }
6376 6377
6377 6378 /*
6378 6379 * In the multirouting case, we need to replicate
6379 6380 * the request on all interfaces that will take part
6380 6381 * in replication. We do so because multirouting is
6381 6382 * reflective, thus we will probably receive multi-
6382 6383 * casts on those interfaces.
6383 6384 * The ip_multirt_apply_membership() succeeds if
6384 6385 * the operation succeeds on at least one interface.
6385 6386 */
6386 6387 if (IN6_IS_ADDR_V4MAPPED(&v6group)) {
6387 6388 ipaddr_t group;
6388 6389
6389 6390 IN6_V4MAPPED_TO_IPADDR(&v6group, group);
6390 6391
6391 6392 ire = ire_ftable_lookup_v4(group, IP_HOST_MASK, 0,
6392 6393 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6393 6394 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6394 6395 } else {
6395 6396 ire = ire_ftable_lookup_v6(&v6group, &ipv6_all_ones, 0,
6396 6397 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6397 6398 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6398 6399 }
6399 6400 if (ire != NULL) {
6400 6401 if (ire->ire_flags & RTF_MULTIRT) {
6401 6402 error = ip_multirt_apply_membership(optfn, ire, connp,
6402 6403 checkonly, &v6group, fmode, &ipv6_all_zeros);
6403 6404 done = B_TRUE;
6404 6405 }
6405 6406 ire_refrele(ire);
6406 6407 }
6407 6408
6408 6409 if (!done) {
6409 6410 error = optfn(connp, checkonly, &v6group, ifaddr, ifindex,
6410 6411 fmode, &ipv6_all_zeros);
6411 6412 }
6412 6413 return (error);
6413 6414 }
6414 6415
6415 6416 /*
6416 6417 * Set socket options for joining and leaving multicast groups
6417 6418 * for specific sources.
6418 6419 * Common to IPv4 and IPv6; inet6 indicates the type of socket.
6419 6420 * The caller has already check that the option name is consistent with
6420 6421 * the address family of the socket.
6421 6422 */
6422 6423 int
6423 6424 ip_opt_set_multicast_sources(conn_t *connp, t_scalar_t name,
6424 6425 uchar_t *invalp, boolean_t inet6, boolean_t checkonly)
6425 6426 {
6426 6427 int *i1 = (int *)invalp;
6427 6428 int error = 0;
6428 6429 ip_stack_t *ipst = connp->conn_netstack->netstack_ip;
6429 6430 struct ip_mreq_source *imreqp;
6430 6431 struct group_source_req *gsreqp;
6431 6432 in6_addr_t v6group, v6src;
6432 6433 uint32_t ifindex;
6433 6434 ipaddr_t ifaddr;
6434 6435 boolean_t mcast_opt = B_TRUE;
6435 6436 mcast_record_t fmode;
6436 6437 ire_t *ire;
6437 6438 boolean_t done = B_FALSE;
6438 6439 int (*optfn)(conn_t *, boolean_t, const in6_addr_t *,
6439 6440 ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *);
6440 6441
6441 6442 switch (name) {
6442 6443 case IP_BLOCK_SOURCE:
6443 6444 mcast_opt = B_FALSE;
6444 6445 /* FALLTHROUGH */
6445 6446 case MCAST_BLOCK_SOURCE:
6446 6447 fmode = MODE_IS_EXCLUDE;
6447 6448 optfn = ip_opt_add_group;
6448 6449 break;
6449 6450
6450 6451 case IP_UNBLOCK_SOURCE:
6451 6452 mcast_opt = B_FALSE;
6452 6453 /* FALLTHROUGH */
6453 6454 case MCAST_UNBLOCK_SOURCE:
6454 6455 fmode = MODE_IS_EXCLUDE;
6455 6456 optfn = ip_opt_delete_group;
6456 6457 break;
6457 6458
6458 6459 case IP_ADD_SOURCE_MEMBERSHIP:
6459 6460 mcast_opt = B_FALSE;
6460 6461 /* FALLTHROUGH */
6461 6462 case MCAST_JOIN_SOURCE_GROUP:
6462 6463 fmode = MODE_IS_INCLUDE;
6463 6464 optfn = ip_opt_add_group;
6464 6465 break;
6465 6466
6466 6467 case IP_DROP_SOURCE_MEMBERSHIP:
6467 6468 mcast_opt = B_FALSE;
6468 6469 /* FALLTHROUGH */
6469 6470 case MCAST_LEAVE_SOURCE_GROUP:
6470 6471 fmode = MODE_IS_INCLUDE;
6471 6472 optfn = ip_opt_delete_group;
6472 6473 break;
6473 6474 default:
6474 6475 /* Should not be reached. */
6475 6476 optfn = NULL;
6476 6477 fmode = 0;
6477 6478 ASSERT(0);
6478 6479 }
6479 6480
6480 6481 if (mcast_opt) {
6481 6482 gsreqp = (struct group_source_req *)i1;
6482 6483 ifindex = gsreqp->gsr_interface;
6483 6484 if (gsreqp->gsr_group.ss_family == AF_INET) {
6484 6485 struct sockaddr_in *s;
6485 6486 s = (struct sockaddr_in *)&gsreqp->gsr_group;
6486 6487 IN6_INADDR_TO_V4MAPPED(&s->sin_addr, &v6group);
6487 6488 s = (struct sockaddr_in *)&gsreqp->gsr_source;
6488 6489 IN6_INADDR_TO_V4MAPPED(&s->sin_addr, &v6src);
6489 6490 } else {
6490 6491 struct sockaddr_in6 *s6;
6491 6492
6492 6493 if (!inet6)
6493 6494 return (EINVAL); /* Not on INET socket */
6494 6495
6495 6496 s6 = (struct sockaddr_in6 *)&gsreqp->gsr_group;
6496 6497 v6group = s6->sin6_addr;
6497 6498 s6 = (struct sockaddr_in6 *)&gsreqp->gsr_source;
6498 6499 v6src = s6->sin6_addr;
6499 6500 }
6500 6501 ifaddr = INADDR_ANY;
6501 6502 } else {
6502 6503 imreqp = (struct ip_mreq_source *)i1;
6503 6504 IN6_INADDR_TO_V4MAPPED(&imreqp->imr_multiaddr, &v6group);
6504 6505 IN6_INADDR_TO_V4MAPPED(&imreqp->imr_sourceaddr, &v6src);
6505 6506 ifaddr = (ipaddr_t)imreqp->imr_interface.s_addr;
6506 6507 ifindex = 0;
6507 6508 }
6508 6509
6509 6510 /*
6510 6511 * Handle src being mapped INADDR_ANY by changing it to unspecified.
6511 6512 */
6512 6513 if (IN6_IS_ADDR_V4MAPPED_ANY(&v6src))
6513 6514 v6src = ipv6_all_zeros;
6514 6515
6515 6516 /*
6516 6517 * In the multirouting case, we need to replicate
6517 6518 * the request as noted in the mcast cases above.
6518 6519 */
6519 6520 if (IN6_IS_ADDR_V4MAPPED(&v6group)) {
6520 6521 ipaddr_t group;
6521 6522
6522 6523 IN6_V4MAPPED_TO_IPADDR(&v6group, group);
6523 6524
6524 6525 ire = ire_ftable_lookup_v4(group, IP_HOST_MASK, 0,
6525 6526 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6526 6527 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6527 6528 } else {
6528 6529 ire = ire_ftable_lookup_v6(&v6group, &ipv6_all_ones, 0,
6529 6530 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6530 6531 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6531 6532 }
6532 6533 if (ire != NULL) {
6533 6534 if (ire->ire_flags & RTF_MULTIRT) {
6534 6535 error = ip_multirt_apply_membership(optfn, ire, connp,
6535 6536 checkonly, &v6group, fmode, &v6src);
6536 6537 done = B_TRUE;
6537 6538 }
6538 6539 ire_refrele(ire);
6539 6540 }
6540 6541 if (!done) {
6541 6542 error = optfn(connp, checkonly, &v6group, ifaddr, ifindex,
6542 6543 fmode, &v6src);
6543 6544 }
6544 6545 return (error);
6545 6546 }
6546 6547
6547 6548 /*
6548 6549 * Given a destination address and a pointer to where to put the information
6549 6550 * this routine fills in the mtuinfo.
6550 6551 * The socket must be connected.
6551 6552 * For sctp conn_faddr is the primary address.
6552 6553 */
6553 6554 int
6554 6555 ip_fill_mtuinfo(conn_t *connp, ip_xmit_attr_t *ixa, struct ip6_mtuinfo *mtuinfo)
6555 6556 {
6556 6557 uint32_t pmtu = IP_MAXPACKET;
6557 6558 uint_t scopeid;
6558 6559
6559 6560 if (IN6_IS_ADDR_UNSPECIFIED(&connp->conn_faddr_v6))
6560 6561 return (-1);
6561 6562
6562 6563 /* In case we never sent or called ip_set_destination_v4/v6 */
6563 6564 if (ixa->ixa_ire != NULL)
6564 6565 pmtu = ip_get_pmtu(ixa);
6565 6566
6566 6567 if (ixa->ixa_flags & IXAF_SCOPEID_SET)
6567 6568 scopeid = ixa->ixa_scopeid;
6568 6569 else
6569 6570 scopeid = 0;
6570 6571
6571 6572 bzero(mtuinfo, sizeof (*mtuinfo));
6572 6573 mtuinfo->ip6m_addr.sin6_family = AF_INET6;
6573 6574 mtuinfo->ip6m_addr.sin6_port = connp->conn_fport;
6574 6575 mtuinfo->ip6m_addr.sin6_addr = connp->conn_faddr_v6;
6575 6576 mtuinfo->ip6m_addr.sin6_scope_id = scopeid;
6576 6577 mtuinfo->ip6m_mtu = pmtu;
6577 6578
6578 6579 return (sizeof (struct ip6_mtuinfo));
6579 6580 }
6580 6581
6581 6582 /*
6582 6583 * When the src multihoming is changed from weak to [strong, preferred]
6583 6584 * ip_ire_rebind_walker is called to walk the list of all ire_t entries
6584 6585 * and identify routes that were created by user-applications in the
6585 6586 * unbound state (i.e., without RTA_IFP), and for which an ire_ill is not
6586 6587 * currently defined. These routes are then 'rebound', i.e., their ire_ill
6587 6588 * is selected by finding an interface route for the gateway.
6588 6589 */
6589 6590 /* ARGSUSED */
6590 6591 void
6591 6592 ip_ire_rebind_walker(ire_t *ire, void *notused)
6592 6593 {
6593 6594 if (!ire->ire_unbound || ire->ire_ill != NULL)
6594 6595 return;
6595 6596 ire_rebind(ire);
6596 6597 ire_delete(ire);
6597 6598 }
6598 6599
6599 6600 /*
6600 6601 * When the src multihoming is changed from [strong, preferred] to weak,
6601 6602 * ip_ire_unbind_walker is called to walk the list of all ire_t entries, and
6602 6603 * set any entries that were created by user-applications in the unbound state
6603 6604 * (i.e., without RTA_IFP) back to having a NULL ire_ill.
6604 6605 */
6605 6606 /* ARGSUSED */
6606 6607 void
6607 6608 ip_ire_unbind_walker(ire_t *ire, void *notused)
6608 6609 {
6609 6610 ire_t *new_ire;
6610 6611
6611 6612 if (!ire->ire_unbound || ire->ire_ill == NULL)
6612 6613 return;
6613 6614 if (ire->ire_ipversion == IPV6_VERSION) {
6614 6615 new_ire = ire_create_v6(&ire->ire_addr_v6, &ire->ire_mask_v6,
6615 6616 &ire->ire_gateway_addr_v6, ire->ire_type, NULL,
6616 6617 ire->ire_zoneid, ire->ire_flags, NULL, ire->ire_ipst);
6617 6618 } else {
6618 6619 new_ire = ire_create((uchar_t *)&ire->ire_addr,
6619 6620 (uchar_t *)&ire->ire_mask,
6620 6621 (uchar_t *)&ire->ire_gateway_addr, ire->ire_type, NULL,
6621 6622 ire->ire_zoneid, ire->ire_flags, NULL, ire->ire_ipst);
6622 6623 }
6623 6624 if (new_ire == NULL)
6624 6625 return;
6625 6626 new_ire->ire_unbound = B_TRUE;
6626 6627 /*
6627 6628 * The bound ire must first be deleted so that we don't return
6628 6629 * the existing one on the attempt to add the unbound new_ire.
6629 6630 */
6630 6631 ire_delete(ire);
6631 6632 new_ire = ire_add(new_ire);
6632 6633 if (new_ire != NULL)
6633 6634 ire_refrele(new_ire);
6634 6635 }
6635 6636
6636 6637 /*
6637 6638 * When the settings of ip*_strict_src_multihoming tunables are changed,
6638 6639 * all cached routes need to be recomputed. This recomputation needs to be
6639 6640 * done when going from weaker to stronger modes so that the cached ire
6640 6641 * for the connection does not violate the current ip*_strict_src_multihoming
6641 6642 * setting. It also needs to be done when going from stronger to weaker modes,
6642 6643 * so that we fall back to matching on the longest-matching-route (as opposed
6643 6644 * to a shorter match that may have been selected in the strong mode
6644 6645 * to satisfy src_multihoming settings).
6645 6646 *
6646 6647 * The cached ixa_ire entires for all conn_t entries are marked as
6647 6648 * "verify" so that they will be recomputed for the next packet.
6648 6649 */
6649 6650 void
6650 6651 conn_ire_revalidate(conn_t *connp, void *arg)
6651 6652 {
6652 6653 boolean_t isv6 = (boolean_t)arg;
6653 6654
6654 6655 if ((isv6 && connp->conn_ipversion != IPV6_VERSION) ||
6655 6656 (!isv6 && connp->conn_ipversion != IPV4_VERSION))
6656 6657 return;
6657 6658 connp->conn_ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
6658 6659 }
6659 6660
6660 6661 /*
6661 6662 * Handles both IPv4 and IPv6 reassembly - doing the out-of-order cases,
6662 6663 * When an ipf is passed here for the first time, if
6663 6664 * we already have in-order fragments on the queue, we convert from the fast-
6664 6665 * path reassembly scheme to the hard-case scheme. From then on, additional
6665 6666 * fragments are reassembled here. We keep track of the start and end offsets
6666 6667 * of each piece, and the number of holes in the chain. When the hole count
6667 6668 * goes to zero, we are done!
6668 6669 *
6669 6670 * The ipf_count will be updated to account for any mblk(s) added (pointed to
6670 6671 * by mp) or subtracted (freeb()ed dups), upon return the caller must update
6671 6672 * ipfb_count and ill_frag_count by the difference of ipf_count before and
6672 6673 * after the call to ip_reassemble().
6673 6674 */
6674 6675 int
6675 6676 ip_reassemble(mblk_t *mp, ipf_t *ipf, uint_t start, boolean_t more, ill_t *ill,
6676 6677 size_t msg_len)
6677 6678 {
6678 6679 uint_t end;
6679 6680 mblk_t *next_mp;
6680 6681 mblk_t *mp1;
6681 6682 uint_t offset;
6682 6683 boolean_t incr_dups = B_TRUE;
6683 6684 boolean_t offset_zero_seen = B_FALSE;
6684 6685 boolean_t pkt_boundary_checked = B_FALSE;
6685 6686
6686 6687 /* If start == 0 then ipf_nf_hdr_len has to be set. */
6687 6688 ASSERT(start != 0 || ipf->ipf_nf_hdr_len != 0);
6688 6689
6689 6690 /* Add in byte count */
6690 6691 ipf->ipf_count += msg_len;
6691 6692 if (ipf->ipf_end) {
6692 6693 /*
6693 6694 * We were part way through in-order reassembly, but now there
6694 6695 * is a hole. We walk through messages already queued, and
6695 6696 * mark them for hard case reassembly. We know that up till
6696 6697 * now they were in order starting from offset zero.
6697 6698 */
6698 6699 offset = 0;
6699 6700 for (mp1 = ipf->ipf_mp->b_cont; mp1; mp1 = mp1->b_cont) {
6700 6701 IP_REASS_SET_START(mp1, offset);
6701 6702 if (offset == 0) {
6702 6703 ASSERT(ipf->ipf_nf_hdr_len != 0);
6703 6704 offset = -ipf->ipf_nf_hdr_len;
6704 6705 }
6705 6706 offset += mp1->b_wptr - mp1->b_rptr;
6706 6707 IP_REASS_SET_END(mp1, offset);
6707 6708 }
6708 6709 /* One hole at the end. */
6709 6710 ipf->ipf_hole_cnt = 1;
6710 6711 /* Brand it as a hard case, forever. */
6711 6712 ipf->ipf_end = 0;
6712 6713 }
6713 6714 /* Walk through all the new pieces. */
6714 6715 do {
6715 6716 end = start + (mp->b_wptr - mp->b_rptr);
6716 6717 /*
6717 6718 * If start is 0, decrease 'end' only for the first mblk of
6718 6719 * the fragment. Otherwise 'end' can get wrong value in the
6719 6720 * second pass of the loop if first mblk is exactly the
6720 6721 * size of ipf_nf_hdr_len.
6721 6722 */
6722 6723 if (start == 0 && !offset_zero_seen) {
6723 6724 /* First segment */
6724 6725 ASSERT(ipf->ipf_nf_hdr_len != 0);
6725 6726 end -= ipf->ipf_nf_hdr_len;
6726 6727 offset_zero_seen = B_TRUE;
6727 6728 }
6728 6729 next_mp = mp->b_cont;
6729 6730 /*
6730 6731 * We are checking to see if there is any interesing data
6731 6732 * to process. If there isn't and the mblk isn't the
6732 6733 * one which carries the unfragmentable header then we
6733 6734 * drop it. It's possible to have just the unfragmentable
6734 6735 * header come through without any data. That needs to be
6735 6736 * saved.
6736 6737 *
6737 6738 * If the assert at the top of this function holds then the
6738 6739 * term "ipf->ipf_nf_hdr_len != 0" isn't needed. This code
6739 6740 * is infrequently traveled enough that the test is left in
6740 6741 * to protect against future code changes which break that
6741 6742 * invariant.
6742 6743 */
6743 6744 if (start == end && start != 0 && ipf->ipf_nf_hdr_len != 0) {
6744 6745 /* Empty. Blast it. */
6745 6746 IP_REASS_SET_START(mp, 0);
6746 6747 IP_REASS_SET_END(mp, 0);
6747 6748 /*
6748 6749 * If the ipf points to the mblk we are about to free,
6749 6750 * update ipf to point to the next mblk (or NULL
6750 6751 * if none).
6751 6752 */
6752 6753 if (ipf->ipf_mp->b_cont == mp)
6753 6754 ipf->ipf_mp->b_cont = next_mp;
6754 6755 freeb(mp);
6755 6756 continue;
6756 6757 }
6757 6758 mp->b_cont = NULL;
6758 6759 IP_REASS_SET_START(mp, start);
6759 6760 IP_REASS_SET_END(mp, end);
6760 6761 if (!ipf->ipf_tail_mp) {
6761 6762 ipf->ipf_tail_mp = mp;
6762 6763 ipf->ipf_mp->b_cont = mp;
6763 6764 if (start == 0 || !more) {
6764 6765 ipf->ipf_hole_cnt = 1;
6765 6766 /*
6766 6767 * if the first fragment comes in more than one
6767 6768 * mblk, this loop will be executed for each
6768 6769 * mblk. Need to adjust hole count so exiting
6769 6770 * this routine will leave hole count at 1.
6770 6771 */
6771 6772 if (next_mp)
6772 6773 ipf->ipf_hole_cnt++;
6773 6774 } else
6774 6775 ipf->ipf_hole_cnt = 2;
6775 6776 continue;
6776 6777 } else if (ipf->ipf_last_frag_seen && !more &&
6777 6778 !pkt_boundary_checked) {
6778 6779 /*
6779 6780 * We check datagram boundary only if this fragment
6780 6781 * claims to be the last fragment and we have seen a
6781 6782 * last fragment in the past too. We do this only
6782 6783 * once for a given fragment.
6783 6784 *
6784 6785 * start cannot be 0 here as fragments with start=0
6785 6786 * and MF=0 gets handled as a complete packet. These
6786 6787 * fragments should not reach here.
6787 6788 */
6788 6789
6789 6790 if (start + msgdsize(mp) !=
6790 6791 IP_REASS_END(ipf->ipf_tail_mp)) {
6791 6792 /*
6792 6793 * We have two fragments both of which claim
6793 6794 * to be the last fragment but gives conflicting
6794 6795 * information about the whole datagram size.
6795 6796 * Something fishy is going on. Drop the
6796 6797 * fragment and free up the reassembly list.
6797 6798 */
6798 6799 return (IP_REASS_FAILED);
6799 6800 }
6800 6801
6801 6802 /*
6802 6803 * We shouldn't come to this code block again for this
6803 6804 * particular fragment.
6804 6805 */
6805 6806 pkt_boundary_checked = B_TRUE;
6806 6807 }
6807 6808
6808 6809 /* New stuff at or beyond tail? */
6809 6810 offset = IP_REASS_END(ipf->ipf_tail_mp);
6810 6811 if (start >= offset) {
6811 6812 if (ipf->ipf_last_frag_seen) {
6812 6813 /* current fragment is beyond last fragment */
6813 6814 return (IP_REASS_FAILED);
6814 6815 }
6815 6816 /* Link it on end. */
6816 6817 ipf->ipf_tail_mp->b_cont = mp;
6817 6818 ipf->ipf_tail_mp = mp;
6818 6819 if (more) {
6819 6820 if (start != offset)
6820 6821 ipf->ipf_hole_cnt++;
6821 6822 } else if (start == offset && next_mp == NULL)
6822 6823 ipf->ipf_hole_cnt--;
6823 6824 continue;
6824 6825 }
6825 6826 mp1 = ipf->ipf_mp->b_cont;
6826 6827 offset = IP_REASS_START(mp1);
6827 6828 /* New stuff at the front? */
6828 6829 if (start < offset) {
6829 6830 if (start == 0) {
6830 6831 if (end >= offset) {
6831 6832 /* Nailed the hole at the begining. */
6832 6833 ipf->ipf_hole_cnt--;
6833 6834 }
6834 6835 } else if (end < offset) {
6835 6836 /*
6836 6837 * A hole, stuff, and a hole where there used
6837 6838 * to be just a hole.
6838 6839 */
6839 6840 ipf->ipf_hole_cnt++;
6840 6841 }
6841 6842 mp->b_cont = mp1;
6842 6843 /* Check for overlap. */
6843 6844 while (end > offset) {
6844 6845 if (end < IP_REASS_END(mp1)) {
6845 6846 mp->b_wptr -= end - offset;
6846 6847 IP_REASS_SET_END(mp, offset);
6847 6848 BUMP_MIB(ill->ill_ip_mib,
6848 6849 ipIfStatsReasmPartDups);
6849 6850 break;
6850 6851 }
6851 6852 /* Did we cover another hole? */
6852 6853 if ((mp1->b_cont &&
6853 6854 IP_REASS_END(mp1) !=
6854 6855 IP_REASS_START(mp1->b_cont) &&
6855 6856 end >= IP_REASS_START(mp1->b_cont)) ||
6856 6857 (!ipf->ipf_last_frag_seen && !more)) {
6857 6858 ipf->ipf_hole_cnt--;
6858 6859 }
6859 6860 /* Clip out mp1. */
6860 6861 if ((mp->b_cont = mp1->b_cont) == NULL) {
6861 6862 /*
6862 6863 * After clipping out mp1, this guy
6863 6864 * is now hanging off the end.
6864 6865 */
6865 6866 ipf->ipf_tail_mp = mp;
6866 6867 }
6867 6868 IP_REASS_SET_START(mp1, 0);
6868 6869 IP_REASS_SET_END(mp1, 0);
6869 6870 /* Subtract byte count */
6870 6871 ipf->ipf_count -= mp1->b_datap->db_lim -
6871 6872 mp1->b_datap->db_base;
6872 6873 freeb(mp1);
6873 6874 BUMP_MIB(ill->ill_ip_mib,
6874 6875 ipIfStatsReasmPartDups);
6875 6876 mp1 = mp->b_cont;
6876 6877 if (!mp1)
6877 6878 break;
6878 6879 offset = IP_REASS_START(mp1);
6879 6880 }
6880 6881 ipf->ipf_mp->b_cont = mp;
6881 6882 continue;
6882 6883 }
6883 6884 /*
6884 6885 * The new piece starts somewhere between the start of the head
6885 6886 * and before the end of the tail.
6886 6887 */
6887 6888 for (; mp1; mp1 = mp1->b_cont) {
6888 6889 offset = IP_REASS_END(mp1);
6889 6890 if (start < offset) {
6890 6891 if (end <= offset) {
6891 6892 /* Nothing new. */
6892 6893 IP_REASS_SET_START(mp, 0);
6893 6894 IP_REASS_SET_END(mp, 0);
6894 6895 /* Subtract byte count */
6895 6896 ipf->ipf_count -= mp->b_datap->db_lim -
6896 6897 mp->b_datap->db_base;
6897 6898 if (incr_dups) {
6898 6899 ipf->ipf_num_dups++;
6899 6900 incr_dups = B_FALSE;
6900 6901 }
6901 6902 freeb(mp);
6902 6903 BUMP_MIB(ill->ill_ip_mib,
6903 6904 ipIfStatsReasmDuplicates);
6904 6905 break;
6905 6906 }
6906 6907 /*
6907 6908 * Trim redundant stuff off beginning of new
6908 6909 * piece.
6909 6910 */
6910 6911 IP_REASS_SET_START(mp, offset);
6911 6912 mp->b_rptr += offset - start;
6912 6913 BUMP_MIB(ill->ill_ip_mib,
6913 6914 ipIfStatsReasmPartDups);
6914 6915 start = offset;
6915 6916 if (!mp1->b_cont) {
6916 6917 /*
6917 6918 * After trimming, this guy is now
6918 6919 * hanging off the end.
6919 6920 */
6920 6921 mp1->b_cont = mp;
6921 6922 ipf->ipf_tail_mp = mp;
6922 6923 if (!more) {
6923 6924 ipf->ipf_hole_cnt--;
6924 6925 }
6925 6926 break;
6926 6927 }
6927 6928 }
6928 6929 if (start >= IP_REASS_START(mp1->b_cont))
6929 6930 continue;
6930 6931 /* Fill a hole */
6931 6932 if (start > offset)
6932 6933 ipf->ipf_hole_cnt++;
6933 6934 mp->b_cont = mp1->b_cont;
6934 6935 mp1->b_cont = mp;
6935 6936 mp1 = mp->b_cont;
6936 6937 offset = IP_REASS_START(mp1);
6937 6938 if (end >= offset) {
6938 6939 ipf->ipf_hole_cnt--;
6939 6940 /* Check for overlap. */
6940 6941 while (end > offset) {
6941 6942 if (end < IP_REASS_END(mp1)) {
6942 6943 mp->b_wptr -= end - offset;
6943 6944 IP_REASS_SET_END(mp, offset);
6944 6945 /*
6945 6946 * TODO we might bump
6946 6947 * this up twice if there is
6947 6948 * overlap at both ends.
6948 6949 */
6949 6950 BUMP_MIB(ill->ill_ip_mib,
6950 6951 ipIfStatsReasmPartDups);
6951 6952 break;
6952 6953 }
6953 6954 /* Did we cover another hole? */
6954 6955 if ((mp1->b_cont &&
6955 6956 IP_REASS_END(mp1)
6956 6957 != IP_REASS_START(mp1->b_cont) &&
6957 6958 end >=
6958 6959 IP_REASS_START(mp1->b_cont)) ||
6959 6960 (!ipf->ipf_last_frag_seen &&
6960 6961 !more)) {
6961 6962 ipf->ipf_hole_cnt--;
6962 6963 }
6963 6964 /* Clip out mp1. */
6964 6965 if ((mp->b_cont = mp1->b_cont) ==
6965 6966 NULL) {
6966 6967 /*
6967 6968 * After clipping out mp1,
6968 6969 * this guy is now hanging
6969 6970 * off the end.
6970 6971 */
6971 6972 ipf->ipf_tail_mp = mp;
6972 6973 }
6973 6974 IP_REASS_SET_START(mp1, 0);
6974 6975 IP_REASS_SET_END(mp1, 0);
6975 6976 /* Subtract byte count */
6976 6977 ipf->ipf_count -=
6977 6978 mp1->b_datap->db_lim -
6978 6979 mp1->b_datap->db_base;
6979 6980 freeb(mp1);
6980 6981 BUMP_MIB(ill->ill_ip_mib,
6981 6982 ipIfStatsReasmPartDups);
6982 6983 mp1 = mp->b_cont;
6983 6984 if (!mp1)
6984 6985 break;
6985 6986 offset = IP_REASS_START(mp1);
6986 6987 }
6987 6988 }
6988 6989 break;
6989 6990 }
6990 6991 } while (start = end, mp = next_mp);
6991 6992
6992 6993 /* Fragment just processed could be the last one. Remember this fact */
6993 6994 if (!more)
6994 6995 ipf->ipf_last_frag_seen = B_TRUE;
6995 6996
6996 6997 /* Still got holes? */
6997 6998 if (ipf->ipf_hole_cnt)
6998 6999 return (IP_REASS_PARTIAL);
6999 7000 /* Clean up overloaded fields to avoid upstream disasters. */
7000 7001 for (mp1 = ipf->ipf_mp->b_cont; mp1; mp1 = mp1->b_cont) {
7001 7002 IP_REASS_SET_START(mp1, 0);
7002 7003 IP_REASS_SET_END(mp1, 0);
7003 7004 }
7004 7005 return (IP_REASS_COMPLETE);
7005 7006 }
7006 7007
7007 7008 /*
7008 7009 * Fragmentation reassembly. Each ILL has a hash table for
7009 7010 * queuing packets undergoing reassembly for all IPIFs
7010 7011 * associated with the ILL. The hash is based on the packet
7011 7012 * IP ident field. The ILL frag hash table was allocated
7012 7013 * as a timer block at the time the ILL was created. Whenever
7013 7014 * there is anything on the reassembly queue, the timer will
7014 7015 * be running. Returns the reassembled packet if reassembly completes.
7015 7016 */
7016 7017 mblk_t *
7017 7018 ip_input_fragment(mblk_t *mp, ipha_t *ipha, ip_recv_attr_t *ira)
7018 7019 {
7019 7020 uint32_t frag_offset_flags;
7020 7021 mblk_t *t_mp;
7021 7022 ipaddr_t dst;
7022 7023 uint8_t proto = ipha->ipha_protocol;
7023 7024 uint32_t sum_val;
7024 7025 uint16_t sum_flags;
7025 7026 ipf_t *ipf;
7026 7027 ipf_t **ipfp;
7027 7028 ipfb_t *ipfb;
7028 7029 uint16_t ident;
7029 7030 uint32_t offset;
7030 7031 ipaddr_t src;
7031 7032 uint_t hdr_length;
7032 7033 uint32_t end;
7033 7034 mblk_t *mp1;
7034 7035 mblk_t *tail_mp;
7035 7036 size_t count;
7036 7037 size_t msg_len;
7037 7038 uint8_t ecn_info = 0;
7038 7039 uint32_t packet_size;
7039 7040 boolean_t pruned = B_FALSE;
7040 7041 ill_t *ill = ira->ira_ill;
7041 7042 ip_stack_t *ipst = ill->ill_ipst;
7042 7043
7043 7044 /*
7044 7045 * Drop the fragmented as early as possible, if
7045 7046 * we don't have resource(s) to re-assemble.
7046 7047 */
7047 7048 if (ipst->ips_ip_reass_queue_bytes == 0) {
7048 7049 freemsg(mp);
7049 7050 return (NULL);
7050 7051 }
7051 7052
7052 7053 /* Check for fragmentation offset; return if there's none */
7053 7054 if ((frag_offset_flags = ntohs(ipha->ipha_fragment_offset_and_flags) &
7054 7055 (IPH_MF | IPH_OFFSET)) == 0)
7055 7056 return (mp);
7056 7057
7057 7058 /*
7058 7059 * We utilize hardware computed checksum info only for UDP since
7059 7060 * IP fragmentation is a normal occurrence for the protocol. In
7060 7061 * addition, checksum offload support for IP fragments carrying
7061 7062 * UDP payload is commonly implemented across network adapters.
7062 7063 */
7063 7064 ASSERT(ira->ira_rill != NULL);
7064 7065 if (proto == IPPROTO_UDP && dohwcksum &&
7065 7066 ILL_HCKSUM_CAPABLE(ira->ira_rill) &&
7066 7067 (DB_CKSUMFLAGS(mp) & (HCK_FULLCKSUM | HCK_PARTIALCKSUM))) {
7067 7068 mblk_t *mp1 = mp->b_cont;
7068 7069 int32_t len;
7069 7070
7070 7071 /* Record checksum information from the packet */
7071 7072 sum_val = (uint32_t)DB_CKSUM16(mp);
7072 7073 sum_flags = DB_CKSUMFLAGS(mp);
7073 7074
7074 7075 /* IP payload offset from beginning of mblk */
7075 7076 offset = ((uchar_t *)ipha + IPH_HDR_LENGTH(ipha)) - mp->b_rptr;
7076 7077
7077 7078 if ((sum_flags & HCK_PARTIALCKSUM) &&
7078 7079 (mp1 == NULL || mp1->b_cont == NULL) &&
7079 7080 offset >= DB_CKSUMSTART(mp) &&
7080 7081 ((len = offset - DB_CKSUMSTART(mp)) & 1) == 0) {
7081 7082 uint32_t adj;
7082 7083 /*
7083 7084 * Partial checksum has been calculated by hardware
7084 7085 * and attached to the packet; in addition, any
7085 7086 * prepended extraneous data is even byte aligned.
7086 7087 * If any such data exists, we adjust the checksum;
7087 7088 * this would also handle any postpended data.
7088 7089 */
7089 7090 IP_ADJCKSUM_PARTIAL(mp->b_rptr + DB_CKSUMSTART(mp),
7090 7091 mp, mp1, len, adj);
7091 7092
7092 7093 /* One's complement subtract extraneous checksum */
7093 7094 if (adj >= sum_val)
7094 7095 sum_val = ~(adj - sum_val) & 0xFFFF;
7095 7096 else
7096 7097 sum_val -= adj;
7097 7098 }
7098 7099 } else {
7099 7100 sum_val = 0;
7100 7101 sum_flags = 0;
7101 7102 }
7102 7103
7103 7104 /* Clear hardware checksumming flag */
7104 7105 DB_CKSUMFLAGS(mp) = 0;
7105 7106
7106 7107 ident = ipha->ipha_ident;
7107 7108 offset = (frag_offset_flags << 3) & 0xFFFF;
7108 7109 src = ipha->ipha_src;
7109 7110 dst = ipha->ipha_dst;
7110 7111 hdr_length = IPH_HDR_LENGTH(ipha);
7111 7112 end = ntohs(ipha->ipha_length) - hdr_length;
7112 7113
7113 7114 /* If end == 0 then we have a packet with no data, so just free it */
7114 7115 if (end == 0) {
7115 7116 freemsg(mp);
7116 7117 return (NULL);
7117 7118 }
7118 7119
7119 7120 /* Record the ECN field info. */
7120 7121 ecn_info = (ipha->ipha_type_of_service & 0x3);
7121 7122 if (offset != 0) {
7122 7123 /*
7123 7124 * If this isn't the first piece, strip the header, and
7124 7125 * add the offset to the end value.
7125 7126 */
7126 7127 mp->b_rptr += hdr_length;
7127 7128 end += offset;
7128 7129 }
7129 7130
7130 7131 /* Handle vnic loopback of fragments */
7131 7132 if (mp->b_datap->db_ref > 2)
7132 7133 msg_len = 0;
7133 7134 else
7134 7135 msg_len = MBLKSIZE(mp);
7135 7136
7136 7137 tail_mp = mp;
7137 7138 while (tail_mp->b_cont != NULL) {
7138 7139 tail_mp = tail_mp->b_cont;
7139 7140 if (tail_mp->b_datap->db_ref <= 2)
7140 7141 msg_len += MBLKSIZE(tail_mp);
7141 7142 }
7142 7143
7143 7144 /* If the reassembly list for this ILL will get too big, prune it */
7144 7145 if ((msg_len + sizeof (*ipf) + ill->ill_frag_count) >=
7145 7146 ipst->ips_ip_reass_queue_bytes) {
7146 7147 DTRACE_PROBE3(ip_reass_queue_bytes, uint_t, msg_len,
7147 7148 uint_t, ill->ill_frag_count,
7148 7149 uint_t, ipst->ips_ip_reass_queue_bytes);
7149 7150 ill_frag_prune(ill,
7150 7151 (ipst->ips_ip_reass_queue_bytes < msg_len) ? 0 :
7151 7152 (ipst->ips_ip_reass_queue_bytes - msg_len));
7152 7153 pruned = B_TRUE;
7153 7154 }
7154 7155
7155 7156 ipfb = &ill->ill_frag_hash_tbl[ILL_FRAG_HASH(src, ident)];
7156 7157 mutex_enter(&ipfb->ipfb_lock);
7157 7158
7158 7159 ipfp = &ipfb->ipfb_ipf;
7159 7160 /* Try to find an existing fragment queue for this packet. */
7160 7161 for (;;) {
7161 7162 ipf = ipfp[0];
7162 7163 if (ipf != NULL) {
7163 7164 /*
7164 7165 * It has to match on ident and src/dst address.
7165 7166 */
7166 7167 if (ipf->ipf_ident == ident &&
7167 7168 ipf->ipf_src == src &&
7168 7169 ipf->ipf_dst == dst &&
7169 7170 ipf->ipf_protocol == proto) {
7170 7171 /*
7171 7172 * If we have received too many
7172 7173 * duplicate fragments for this packet
7173 7174 * free it.
7174 7175 */
7175 7176 if (ipf->ipf_num_dups > ip_max_frag_dups) {
7176 7177 ill_frag_free_pkts(ill, ipfb, ipf, 1);
7177 7178 freemsg(mp);
7178 7179 mutex_exit(&ipfb->ipfb_lock);
7179 7180 return (NULL);
7180 7181 }
7181 7182 /* Found it. */
7182 7183 break;
7183 7184 }
7184 7185 ipfp = &ipf->ipf_hash_next;
7185 7186 continue;
7186 7187 }
7187 7188
7188 7189 /*
7189 7190 * If we pruned the list, do we want to store this new
7190 7191 * fragment?. We apply an optimization here based on the
7191 7192 * fact that most fragments will be received in order.
7192 7193 * So if the offset of this incoming fragment is zero,
7193 7194 * it is the first fragment of a new packet. We will
7194 7195 * keep it. Otherwise drop the fragment, as we have
7195 7196 * probably pruned the packet already (since the
7196 7197 * packet cannot be found).
7197 7198 */
7198 7199 if (pruned && offset != 0) {
7199 7200 mutex_exit(&ipfb->ipfb_lock);
7200 7201 freemsg(mp);
7201 7202 return (NULL);
7202 7203 }
7203 7204
7204 7205 if (ipfb->ipfb_frag_pkts >= MAX_FRAG_PKTS(ipst)) {
7205 7206 /*
7206 7207 * Too many fragmented packets in this hash
7207 7208 * bucket. Free the oldest.
7208 7209 */
7209 7210 ill_frag_free_pkts(ill, ipfb, ipfb->ipfb_ipf, 1);
7210 7211 }
7211 7212
7212 7213 /* New guy. Allocate a frag message. */
7213 7214 mp1 = allocb(sizeof (*ipf), BPRI_MED);
7214 7215 if (mp1 == NULL) {
7215 7216 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7216 7217 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7217 7218 freemsg(mp);
7218 7219 reass_done:
7219 7220 mutex_exit(&ipfb->ipfb_lock);
7220 7221 return (NULL);
7221 7222 }
7222 7223
7223 7224 BUMP_MIB(ill->ill_ip_mib, ipIfStatsReasmReqds);
7224 7225 mp1->b_cont = mp;
7225 7226
7226 7227 /* Initialize the fragment header. */
7227 7228 ipf = (ipf_t *)mp1->b_rptr;
7228 7229 ipf->ipf_mp = mp1;
7229 7230 ipf->ipf_ptphn = ipfp;
7230 7231 ipfp[0] = ipf;
7231 7232 ipf->ipf_hash_next = NULL;
7232 7233 ipf->ipf_ident = ident;
7233 7234 ipf->ipf_protocol = proto;
7234 7235 ipf->ipf_src = src;
7235 7236 ipf->ipf_dst = dst;
7236 7237 ipf->ipf_nf_hdr_len = 0;
7237 7238 /* Record reassembly start time. */
7238 7239 ipf->ipf_timestamp = gethrestime_sec();
7239 7240 /* Record ipf generation and account for frag header */
7240 7241 ipf->ipf_gen = ill->ill_ipf_gen++;
7241 7242 ipf->ipf_count = MBLKSIZE(mp1);
7242 7243 ipf->ipf_last_frag_seen = B_FALSE;
7243 7244 ipf->ipf_ecn = ecn_info;
7244 7245 ipf->ipf_num_dups = 0;
7245 7246 ipfb->ipfb_frag_pkts++;
7246 7247 ipf->ipf_checksum = 0;
7247 7248 ipf->ipf_checksum_flags = 0;
7248 7249
7249 7250 /* Store checksum value in fragment header */
7250 7251 if (sum_flags != 0) {
7251 7252 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7252 7253 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7253 7254 ipf->ipf_checksum = sum_val;
7254 7255 ipf->ipf_checksum_flags = sum_flags;
7255 7256 }
7256 7257
7257 7258 /*
7258 7259 * We handle reassembly two ways. In the easy case,
7259 7260 * where all the fragments show up in order, we do
7260 7261 * minimal bookkeeping, and just clip new pieces on
7261 7262 * the end. If we ever see a hole, then we go off
7262 7263 * to ip_reassemble which has to mark the pieces and
7263 7264 * keep track of the number of holes, etc. Obviously,
7264 7265 * the point of having both mechanisms is so we can
7265 7266 * handle the easy case as efficiently as possible.
7266 7267 */
7267 7268 if (offset == 0) {
7268 7269 /* Easy case, in-order reassembly so far. */
7269 7270 ipf->ipf_count += msg_len;
7270 7271 ipf->ipf_tail_mp = tail_mp;
7271 7272 /*
7272 7273 * Keep track of next expected offset in
7273 7274 * ipf_end.
7274 7275 */
7275 7276 ipf->ipf_end = end;
7276 7277 ipf->ipf_nf_hdr_len = hdr_length;
7277 7278 } else {
7278 7279 /* Hard case, hole at the beginning. */
7279 7280 ipf->ipf_tail_mp = NULL;
7280 7281 /*
7281 7282 * ipf_end == 0 means that we have given up
7282 7283 * on easy reassembly.
7283 7284 */
7284 7285 ipf->ipf_end = 0;
7285 7286
7286 7287 /* Forget checksum offload from now on */
7287 7288 ipf->ipf_checksum_flags = 0;
7288 7289
7289 7290 /*
7290 7291 * ipf_hole_cnt is set by ip_reassemble.
7291 7292 * ipf_count is updated by ip_reassemble.
7292 7293 * No need to check for return value here
7293 7294 * as we don't expect reassembly to complete
7294 7295 * or fail for the first fragment itself.
7295 7296 */
7296 7297 (void) ip_reassemble(mp, ipf,
7297 7298 (frag_offset_flags & IPH_OFFSET) << 3,
7298 7299 (frag_offset_flags & IPH_MF), ill, msg_len);
7299 7300 }
7300 7301 /* Update per ipfb and ill byte counts */
7301 7302 ipfb->ipfb_count += ipf->ipf_count;
7302 7303 ASSERT(ipfb->ipfb_count > 0); /* Wraparound */
7303 7304 atomic_add_32(&ill->ill_frag_count, ipf->ipf_count);
7304 7305 /* If the frag timer wasn't already going, start it. */
7305 7306 mutex_enter(&ill->ill_lock);
7306 7307 ill_frag_timer_start(ill);
7307 7308 mutex_exit(&ill->ill_lock);
7308 7309 goto reass_done;
7309 7310 }
7310 7311
7311 7312 /*
7312 7313 * If the packet's flag has changed (it could be coming up
7313 7314 * from an interface different than the previous, therefore
7314 7315 * possibly different checksum capability), then forget about
7315 7316 * any stored checksum states. Otherwise add the value to
7316 7317 * the existing one stored in the fragment header.
7317 7318 */
7318 7319 if (sum_flags != 0 && sum_flags == ipf->ipf_checksum_flags) {
7319 7320 sum_val += ipf->ipf_checksum;
7320 7321 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7321 7322 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7322 7323 ipf->ipf_checksum = sum_val;
7323 7324 } else if (ipf->ipf_checksum_flags != 0) {
7324 7325 /* Forget checksum offload from now on */
7325 7326 ipf->ipf_checksum_flags = 0;
7326 7327 }
7327 7328
7328 7329 /*
7329 7330 * We have a new piece of a datagram which is already being
7330 7331 * reassembled. Update the ECN info if all IP fragments
7331 7332 * are ECN capable. If there is one which is not, clear
7332 7333 * all the info. If there is at least one which has CE
7333 7334 * code point, IP needs to report that up to transport.
7334 7335 */
7335 7336 if (ecn_info != IPH_ECN_NECT && ipf->ipf_ecn != IPH_ECN_NECT) {
7336 7337 if (ecn_info == IPH_ECN_CE)
7337 7338 ipf->ipf_ecn = IPH_ECN_CE;
7338 7339 } else {
7339 7340 ipf->ipf_ecn = IPH_ECN_NECT;
7340 7341 }
7341 7342 if (offset && ipf->ipf_end == offset) {
7342 7343 /* The new fragment fits at the end */
7343 7344 ipf->ipf_tail_mp->b_cont = mp;
7344 7345 /* Update the byte count */
7345 7346 ipf->ipf_count += msg_len;
7346 7347 /* Update per ipfb and ill byte counts */
7347 7348 ipfb->ipfb_count += msg_len;
7348 7349 ASSERT(ipfb->ipfb_count > 0); /* Wraparound */
7349 7350 atomic_add_32(&ill->ill_frag_count, msg_len);
7350 7351 if (frag_offset_flags & IPH_MF) {
7351 7352 /* More to come. */
7352 7353 ipf->ipf_end = end;
7353 7354 ipf->ipf_tail_mp = tail_mp;
7354 7355 goto reass_done;
7355 7356 }
7356 7357 } else {
7357 7358 /* Go do the hard cases. */
7358 7359 int ret;
7359 7360
7360 7361 if (offset == 0)
7361 7362 ipf->ipf_nf_hdr_len = hdr_length;
7362 7363
7363 7364 /* Save current byte count */
7364 7365 count = ipf->ipf_count;
7365 7366 ret = ip_reassemble(mp, ipf,
7366 7367 (frag_offset_flags & IPH_OFFSET) << 3,
7367 7368 (frag_offset_flags & IPH_MF), ill, msg_len);
7368 7369 /* Count of bytes added and subtracted (freeb()ed) */
7369 7370 count = ipf->ipf_count - count;
7370 7371 if (count) {
7371 7372 /* Update per ipfb and ill byte counts */
7372 7373 ipfb->ipfb_count += count;
7373 7374 ASSERT(ipfb->ipfb_count > 0); /* Wraparound */
7374 7375 atomic_add_32(&ill->ill_frag_count, count);
7375 7376 }
7376 7377 if (ret == IP_REASS_PARTIAL) {
7377 7378 goto reass_done;
7378 7379 } else if (ret == IP_REASS_FAILED) {
7379 7380 /* Reassembly failed. Free up all resources */
7380 7381 ill_frag_free_pkts(ill, ipfb, ipf, 1);
7381 7382 for (t_mp = mp; t_mp != NULL; t_mp = t_mp->b_cont) {
7382 7383 IP_REASS_SET_START(t_mp, 0);
7383 7384 IP_REASS_SET_END(t_mp, 0);
7384 7385 }
7385 7386 freemsg(mp);
7386 7387 goto reass_done;
7387 7388 }
7388 7389 /* We will reach here iff 'ret' is IP_REASS_COMPLETE */
7389 7390 }
7390 7391 /*
7391 7392 * We have completed reassembly. Unhook the frag header from
7392 7393 * the reassembly list.
7393 7394 *
7394 7395 * Before we free the frag header, record the ECN info
7395 7396 * to report back to the transport.
7396 7397 */
7397 7398 ecn_info = ipf->ipf_ecn;
7398 7399 BUMP_MIB(ill->ill_ip_mib, ipIfStatsReasmOKs);
7399 7400 ipfp = ipf->ipf_ptphn;
7400 7401
7401 7402 /* We need to supply these to caller */
7402 7403 if ((sum_flags = ipf->ipf_checksum_flags) != 0)
7403 7404 sum_val = ipf->ipf_checksum;
7404 7405 else
7405 7406 sum_val = 0;
7406 7407
7407 7408 mp1 = ipf->ipf_mp;
7408 7409 count = ipf->ipf_count;
7409 7410 ipf = ipf->ipf_hash_next;
7410 7411 if (ipf != NULL)
7411 7412 ipf->ipf_ptphn = ipfp;
7412 7413 ipfp[0] = ipf;
7413 7414 atomic_add_32(&ill->ill_frag_count, -count);
7414 7415 ASSERT(ipfb->ipfb_count >= count);
7415 7416 ipfb->ipfb_count -= count;
7416 7417 ipfb->ipfb_frag_pkts--;
7417 7418 mutex_exit(&ipfb->ipfb_lock);
7418 7419 /* Ditch the frag header. */
7419 7420 mp = mp1->b_cont;
7420 7421
7421 7422 freeb(mp1);
7422 7423
7423 7424 /* Restore original IP length in header. */
7424 7425 packet_size = (uint32_t)msgdsize(mp);
7425 7426 if (packet_size > IP_MAXPACKET) {
7426 7427 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7427 7428 ip_drop_input("Reassembled packet too large", mp, ill);
7428 7429 freemsg(mp);
7429 7430 return (NULL);
7430 7431 }
7431 7432
7432 7433 if (DB_REF(mp) > 1) {
7433 7434 mblk_t *mp2 = copymsg(mp);
7434 7435
7435 7436 if (mp2 == NULL) {
7436 7437 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7437 7438 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7438 7439 freemsg(mp);
7439 7440 return (NULL);
7440 7441 }
7441 7442 freemsg(mp);
7442 7443 mp = mp2;
7443 7444 }
7444 7445 ipha = (ipha_t *)mp->b_rptr;
7445 7446
7446 7447 ipha->ipha_length = htons((uint16_t)packet_size);
7447 7448 /* We're now complete, zip the frag state */
7448 7449 ipha->ipha_fragment_offset_and_flags = 0;
7449 7450 /* Record the ECN info. */
7450 7451 ipha->ipha_type_of_service &= 0xFC;
7451 7452 ipha->ipha_type_of_service |= ecn_info;
7452 7453
7453 7454 /* Update the receive attributes */
7454 7455 ira->ira_pktlen = packet_size;
7455 7456 ira->ira_ip_hdr_length = IPH_HDR_LENGTH(ipha);
7456 7457
7457 7458 /* Reassembly is successful; set checksum information in packet */
7458 7459 DB_CKSUM16(mp) = (uint16_t)sum_val;
7459 7460 DB_CKSUMFLAGS(mp) = sum_flags;
7460 7461 DB_CKSUMSTART(mp) = ira->ira_ip_hdr_length;
7461 7462
7462 7463 return (mp);
7463 7464 }
7464 7465
7465 7466 /*
7466 7467 * Pullup function that should be used for IP input in order to
7467 7468 * ensure we do not loose the L2 source address; we need the l2 source
7468 7469 * address for IP_RECVSLLA and for ndp_input.
7469 7470 *
7470 7471 * We return either NULL or b_rptr.
7471 7472 */
7472 7473 void *
7473 7474 ip_pullup(mblk_t *mp, ssize_t len, ip_recv_attr_t *ira)
7474 7475 {
7475 7476 ill_t *ill = ira->ira_ill;
7476 7477
7477 7478 if (ip_rput_pullups++ == 0) {
7478 7479 (void) mi_strlog(ill->ill_rq, 1, SL_ERROR|SL_TRACE,
7479 7480 "ip_pullup: %s forced us to "
7480 7481 " pullup pkt, hdr len %ld, hdr addr %p",
7481 7482 ill->ill_name, len, (void *)mp->b_rptr);
7482 7483 }
7483 7484 if (!(ira->ira_flags & IRAF_L2SRC_SET))
7484 7485 ip_setl2src(mp, ira, ira->ira_rill);
7485 7486 ASSERT(ira->ira_flags & IRAF_L2SRC_SET);
7486 7487 if (!pullupmsg(mp, len))
7487 7488 return (NULL);
7488 7489 else
7489 7490 return (mp->b_rptr);
7490 7491 }
7491 7492
7492 7493 /*
7493 7494 * Make sure ira_l2src has an address. If we don't have one fill with zeros.
7494 7495 * When called from the ULP ira_rill will be NULL hence the caller has to
7495 7496 * pass in the ill.
7496 7497 */
7497 7498 /* ARGSUSED */
7498 7499 void
7499 7500 ip_setl2src(mblk_t *mp, ip_recv_attr_t *ira, ill_t *ill)
7500 7501 {
7501 7502 const uchar_t *addr;
7502 7503 int alen;
7503 7504
7504 7505 if (ira->ira_flags & IRAF_L2SRC_SET)
7505 7506 return;
7506 7507
7507 7508 ASSERT(ill != NULL);
7508 7509 alen = ill->ill_phys_addr_length;
7509 7510 ASSERT(alen <= sizeof (ira->ira_l2src));
7510 7511 if (ira->ira_mhip != NULL &&
7511 7512 (addr = ira->ira_mhip->mhi_saddr) != NULL) {
7512 7513 bcopy(addr, ira->ira_l2src, alen);
7513 7514 } else if ((ira->ira_flags & IRAF_L2SRC_LOOPBACK) &&
7514 7515 (addr = ill->ill_phys_addr) != NULL) {
7515 7516 bcopy(addr, ira->ira_l2src, alen);
7516 7517 } else {
7517 7518 bzero(ira->ira_l2src, alen);
7518 7519 }
7519 7520 ira->ira_flags |= IRAF_L2SRC_SET;
7520 7521 }
7521 7522
7522 7523 /*
7523 7524 * check ip header length and align it.
7524 7525 */
7525 7526 mblk_t *
7526 7527 ip_check_and_align_header(mblk_t *mp, uint_t min_size, ip_recv_attr_t *ira)
7527 7528 {
7528 7529 ill_t *ill = ira->ira_ill;
7529 7530 ssize_t len;
7530 7531
7531 7532 len = MBLKL(mp);
7532 7533
7533 7534 if (!OK_32PTR(mp->b_rptr))
7534 7535 IP_STAT(ill->ill_ipst, ip_notaligned);
7535 7536 else
7536 7537 IP_STAT(ill->ill_ipst, ip_recv_pullup);
7537 7538
7538 7539 /* Guard against bogus device drivers */
7539 7540 if (len < 0) {
7540 7541 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7541 7542 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7542 7543 freemsg(mp);
7543 7544 return (NULL);
7544 7545 }
7545 7546
7546 7547 if (len == 0) {
7547 7548 /* GLD sometimes sends up mblk with b_rptr == b_wptr! */
7548 7549 mblk_t *mp1 = mp->b_cont;
7549 7550
7550 7551 if (!(ira->ira_flags & IRAF_L2SRC_SET))
7551 7552 ip_setl2src(mp, ira, ira->ira_rill);
7552 7553 ASSERT(ira->ira_flags & IRAF_L2SRC_SET);
7553 7554
7554 7555 freeb(mp);
7555 7556 mp = mp1;
7556 7557 if (mp == NULL)
7557 7558 return (NULL);
7558 7559
7559 7560 if (OK_32PTR(mp->b_rptr) && MBLKL(mp) >= min_size)
7560 7561 return (mp);
7561 7562 }
7562 7563 if (ip_pullup(mp, min_size, ira) == NULL) {
7563 7564 if (msgdsize(mp) < min_size) {
7564 7565 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7565 7566 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7566 7567 } else {
7567 7568 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7568 7569 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7569 7570 }
7570 7571 freemsg(mp);
7571 7572 return (NULL);
7572 7573 }
7573 7574 return (mp);
7574 7575 }
7575 7576
7576 7577 /*
7577 7578 * Common code for IPv4 and IPv6 to check and pullup multi-mblks
7578 7579 */
7579 7580 mblk_t *
7580 7581 ip_check_length(mblk_t *mp, uchar_t *rptr, ssize_t len, uint_t pkt_len,
7581 7582 uint_t min_size, ip_recv_attr_t *ira)
7582 7583 {
7583 7584 ill_t *ill = ira->ira_ill;
7584 7585
7585 7586 /*
7586 7587 * Make sure we have data length consistent
7587 7588 * with the IP header.
7588 7589 */
7589 7590 if (mp->b_cont == NULL) {
7590 7591 /* pkt_len is based on ipha_len, not the mblk length */
7591 7592 if (pkt_len < min_size) {
7592 7593 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7593 7594 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7594 7595 freemsg(mp);
7595 7596 return (NULL);
7596 7597 }
7597 7598 if (len < 0) {
7598 7599 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
7599 7600 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
7600 7601 freemsg(mp);
7601 7602 return (NULL);
7602 7603 }
7603 7604 /* Drop any pad */
7604 7605 mp->b_wptr = rptr + pkt_len;
7605 7606 } else if ((len += msgdsize(mp->b_cont)) != 0) {
7606 7607 ASSERT(pkt_len >= min_size);
7607 7608 if (pkt_len < min_size) {
7608 7609 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7609 7610 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7610 7611 freemsg(mp);
7611 7612 return (NULL);
7612 7613 }
7613 7614 if (len < 0) {
7614 7615 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
7615 7616 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
7616 7617 freemsg(mp);
7617 7618 return (NULL);
7618 7619 }
7619 7620 /* Drop any pad */
7620 7621 (void) adjmsg(mp, -len);
7621 7622 /*
7622 7623 * adjmsg may have freed an mblk from the chain, hence
7623 7624 * invalidate any hw checksum here. This will force IP to
7624 7625 * calculate the checksum in sw, but only for this packet.
7625 7626 */
7626 7627 DB_CKSUMFLAGS(mp) = 0;
7627 7628 IP_STAT(ill->ill_ipst, ip_multimblk);
7628 7629 }
7629 7630 return (mp);
7630 7631 }
7631 7632
7632 7633 /*
7633 7634 * Check that the IPv4 opt_len is consistent with the packet and pullup
7634 7635 * the options.
7635 7636 */
7636 7637 mblk_t *
7637 7638 ip_check_optlen(mblk_t *mp, ipha_t *ipha, uint_t opt_len, uint_t pkt_len,
7638 7639 ip_recv_attr_t *ira)
7639 7640 {
7640 7641 ill_t *ill = ira->ira_ill;
7641 7642 ssize_t len;
7642 7643
7643 7644 /* Assume no IPv6 packets arrive over the IPv4 queue */
7644 7645 if (IPH_HDR_VERSION(ipha) != IPV4_VERSION) {
7645 7646 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7646 7647 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInWrongIPVersion);
7647 7648 ip_drop_input("IPvN packet on IPv4 ill", mp, ill);
7648 7649 freemsg(mp);
7649 7650 return (NULL);
7650 7651 }
7651 7652
7652 7653 if (opt_len > (15 - IP_SIMPLE_HDR_LENGTH_IN_WORDS)) {
7653 7654 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7654 7655 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7655 7656 freemsg(mp);
7656 7657 return (NULL);
7657 7658 }
7658 7659 /*
7659 7660 * Recompute complete header length and make sure we
7660 7661 * have access to all of it.
7661 7662 */
7662 7663 len = ((size_t)opt_len + IP_SIMPLE_HDR_LENGTH_IN_WORDS) << 2;
7663 7664 if (len > (mp->b_wptr - mp->b_rptr)) {
7664 7665 if (len > pkt_len) {
7665 7666 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7666 7667 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7667 7668 freemsg(mp);
7668 7669 return (NULL);
7669 7670 }
7670 7671 if (ip_pullup(mp, len, ira) == NULL) {
7671 7672 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7672 7673 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7673 7674 freemsg(mp);
7674 7675 return (NULL);
7675 7676 }
7676 7677 }
7677 7678 return (mp);
7678 7679 }
7679 7680
7680 7681 /*
7681 7682 * Returns a new ire, or the same ire, or NULL.
7682 7683 * If a different IRE is returned, then it is held; the caller
7683 7684 * needs to release it.
7684 7685 * In no case is there any hold/release on the ire argument.
7685 7686 */
7686 7687 ire_t *
7687 7688 ip_check_multihome(void *addr, ire_t *ire, ill_t *ill)
7688 7689 {
7689 7690 ire_t *new_ire;
7690 7691 ill_t *ire_ill;
7691 7692 uint_t ifindex;
7692 7693 ip_stack_t *ipst = ill->ill_ipst;
7693 7694 boolean_t strict_check = B_FALSE;
7694 7695
7695 7696 /*
7696 7697 * IPMP common case: if IRE and ILL are in the same group, there's no
7697 7698 * issue (e.g. packet received on an underlying interface matched an
7698 7699 * IRE_LOCAL on its associated group interface).
7699 7700 */
7700 7701 ASSERT(ire->ire_ill != NULL);
7701 7702 if (IS_IN_SAME_ILLGRP(ill, ire->ire_ill))
7702 7703 return (ire);
7703 7704
7704 7705 /*
7705 7706 * Do another ire lookup here, using the ingress ill, to see if the
7706 7707 * interface is in a usesrc group.
7707 7708 * As long as the ills belong to the same group, we don't consider
7708 7709 * them to be arriving on the wrong interface. Thus, if the switch
7709 7710 * is doing inbound load spreading, we won't drop packets when the
7710 7711 * ip*_strict_dst_multihoming switch is on.
7711 7712 * We also need to check for IPIF_UNNUMBERED point2point interfaces
7712 7713 * where the local address may not be unique. In this case we were
7713 7714 * at the mercy of the initial ire lookup and the IRE_LOCAL it
7714 7715 * actually returned. The new lookup, which is more specific, should
7715 7716 * only find the IRE_LOCAL associated with the ingress ill if one
7716 7717 * exists.
7717 7718 */
7718 7719 if (ire->ire_ipversion == IPV4_VERSION) {
7719 7720 if (ipst->ips_ip_strict_dst_multihoming)
7720 7721 strict_check = B_TRUE;
7721 7722 new_ire = ire_ftable_lookup_v4(*((ipaddr_t *)addr), 0, 0,
7722 7723 IRE_LOCAL, ill, ALL_ZONES, NULL,
7723 7724 (MATCH_IRE_TYPE|MATCH_IRE_ILL), 0, ipst, NULL);
7724 7725 } else {
7725 7726 ASSERT(!IN6_IS_ADDR_MULTICAST((in6_addr_t *)addr));
7726 7727 if (ipst->ips_ipv6_strict_dst_multihoming)
7727 7728 strict_check = B_TRUE;
7728 7729 new_ire = ire_ftable_lookup_v6((in6_addr_t *)addr, NULL, NULL,
7729 7730 IRE_LOCAL, ill, ALL_ZONES, NULL,
7730 7731 (MATCH_IRE_TYPE|MATCH_IRE_ILL), 0, ipst, NULL);
7731 7732 }
7732 7733 /*
7733 7734 * If the same ire that was returned in ip_input() is found then this
7734 7735 * is an indication that usesrc groups are in use. The packet
7735 7736 * arrived on a different ill in the group than the one associated with
7736 7737 * the destination address. If a different ire was found then the same
7737 7738 * IP address must be hosted on multiple ills. This is possible with
7738 7739 * unnumbered point2point interfaces. We switch to use this new ire in
7739 7740 * order to have accurate interface statistics.
7740 7741 */
7741 7742 if (new_ire != NULL) {
7742 7743 /* Note: held in one case but not the other? Caller handles */
7743 7744 if (new_ire != ire)
7744 7745 return (new_ire);
7745 7746 /* Unchanged */
7746 7747 ire_refrele(new_ire);
7747 7748 return (ire);
7748 7749 }
7749 7750
7750 7751 /*
7751 7752 * Chase pointers once and store locally.
7752 7753 */
7753 7754 ASSERT(ire->ire_ill != NULL);
7754 7755 ire_ill = ire->ire_ill;
7755 7756 ifindex = ill->ill_usesrc_ifindex;
7756 7757
7757 7758 /*
7758 7759 * Check if it's a legal address on the 'usesrc' interface.
7759 7760 * For IPMP data addresses the IRE_LOCAL is the upper, hence we
7760 7761 * can just check phyint_ifindex.
7761 7762 */
7762 7763 if (ifindex != 0 && ifindex == ire_ill->ill_phyint->phyint_ifindex) {
7763 7764 return (ire);
7764 7765 }
7765 7766
7766 7767 /*
7767 7768 * If the ip*_strict_dst_multihoming switch is on then we can
7768 7769 * only accept this packet if the interface is marked as routing.
7769 7770 */
7770 7771 if (!(strict_check))
7771 7772 return (ire);
7772 7773
7773 7774 if ((ill->ill_flags & ire->ire_ill->ill_flags & ILLF_ROUTER) != 0) {
7774 7775 return (ire);
7775 7776 }
7776 7777 return (NULL);
7777 7778 }
7778 7779
7779 7780 /*
7780 7781 * This function is used to construct a mac_header_info_s from a
7781 7782 * DL_UNITDATA_IND message.
7782 7783 * The address fields in the mhi structure points into the message,
7783 7784 * thus the caller can't use those fields after freeing the message.
7784 7785 *
7785 7786 * We determine whether the packet received is a non-unicast packet
7786 7787 * and in doing so, determine whether or not it is broadcast vs multicast.
7787 7788 * For it to be a broadcast packet, we must have the appropriate mblk_t
7788 7789 * hanging off the ill_t. If this is either not present or doesn't match
7789 7790 * the destination mac address in the DL_UNITDATA_IND, the packet is deemed
7790 7791 * to be multicast. Thus NICs that have no broadcast address (or no
7791 7792 * capability for one, such as point to point links) cannot return as
7792 7793 * the packet being broadcast.
7793 7794 */
7794 7795 void
7795 7796 ip_dlur_to_mhi(ill_t *ill, mblk_t *mb, struct mac_header_info_s *mhip)
7796 7797 {
7797 7798 dl_unitdata_ind_t *ind = (dl_unitdata_ind_t *)mb->b_rptr;
7798 7799 mblk_t *bmp;
7799 7800 uint_t extra_offset;
7800 7801
7801 7802 bzero(mhip, sizeof (struct mac_header_info_s));
7802 7803
7803 7804 mhip->mhi_dsttype = MAC_ADDRTYPE_UNICAST;
7804 7805
7805 7806 if (ill->ill_sap_length < 0)
7806 7807 extra_offset = 0;
7807 7808 else
7808 7809 extra_offset = ill->ill_sap_length;
7809 7810
7810 7811 mhip->mhi_daddr = (uchar_t *)ind + ind->dl_dest_addr_offset +
7811 7812 extra_offset;
7812 7813 mhip->mhi_saddr = (uchar_t *)ind + ind->dl_src_addr_offset +
7813 7814 extra_offset;
7814 7815
7815 7816 if (!ind->dl_group_address)
7816 7817 return;
7817 7818
7818 7819 /* Multicast or broadcast */
7819 7820 mhip->mhi_dsttype = MAC_ADDRTYPE_MULTICAST;
7820 7821
7821 7822 if (ind->dl_dest_addr_offset > sizeof (*ind) &&
7822 7823 ind->dl_dest_addr_offset + ind->dl_dest_addr_length < MBLKL(mb) &&
7823 7824 (bmp = ill->ill_bcast_mp) != NULL) {
7824 7825 dl_unitdata_req_t *dlur;
7825 7826 uint8_t *bphys_addr;
7826 7827
7827 7828 dlur = (dl_unitdata_req_t *)bmp->b_rptr;
7828 7829 bphys_addr = (uchar_t *)dlur + dlur->dl_dest_addr_offset +
7829 7830 extra_offset;
7830 7831
7831 7832 if (bcmp(mhip->mhi_daddr, bphys_addr,
7832 7833 ind->dl_dest_addr_length) == 0)
7833 7834 mhip->mhi_dsttype = MAC_ADDRTYPE_BROADCAST;
7834 7835 }
7835 7836 }
7836 7837
7837 7838 /*
7838 7839 * This function is used to construct a mac_header_info_s from a
7839 7840 * M_DATA fastpath message from a DLPI driver.
7840 7841 * The address fields in the mhi structure points into the message,
7841 7842 * thus the caller can't use those fields after freeing the message.
7842 7843 *
7843 7844 * We determine whether the packet received is a non-unicast packet
7844 7845 * and in doing so, determine whether or not it is broadcast vs multicast.
7845 7846 * For it to be a broadcast packet, we must have the appropriate mblk_t
7846 7847 * hanging off the ill_t. If this is either not present or doesn't match
7847 7848 * the destination mac address in the DL_UNITDATA_IND, the packet is deemed
7848 7849 * to be multicast. Thus NICs that have no broadcast address (or no
7849 7850 * capability for one, such as point to point links) cannot return as
7850 7851 * the packet being broadcast.
7851 7852 */
7852 7853 void
7853 7854 ip_mdata_to_mhi(ill_t *ill, mblk_t *mp, struct mac_header_info_s *mhip)
7854 7855 {
7855 7856 mblk_t *bmp;
7856 7857 struct ether_header *pether;
7857 7858
7858 7859 bzero(mhip, sizeof (struct mac_header_info_s));
7859 7860
7860 7861 mhip->mhi_dsttype = MAC_ADDRTYPE_UNICAST;
7861 7862
7862 7863 pether = (struct ether_header *)((char *)mp->b_rptr
7863 7864 - sizeof (struct ether_header));
7864 7865
7865 7866 /*
7866 7867 * Make sure the interface is an ethernet type, since we don't
7867 7868 * know the header format for anything but Ethernet. Also make
7868 7869 * sure we are pointing correctly above db_base.
7869 7870 */
7870 7871 if (ill->ill_type != IFT_ETHER)
7871 7872 return;
7872 7873
7873 7874 retry:
7874 7875 if ((uchar_t *)pether < mp->b_datap->db_base)
7875 7876 return;
7876 7877
7877 7878 /* Is there a VLAN tag? */
7878 7879 if (ill->ill_isv6) {
7879 7880 if (pether->ether_type != htons(ETHERTYPE_IPV6)) {
7880 7881 pether = (struct ether_header *)((char *)pether - 4);
7881 7882 goto retry;
7882 7883 }
7883 7884 } else {
7884 7885 if (pether->ether_type != htons(ETHERTYPE_IP)) {
7885 7886 pether = (struct ether_header *)((char *)pether - 4);
7886 7887 goto retry;
7887 7888 }
7888 7889 }
7889 7890 mhip->mhi_daddr = (uchar_t *)&pether->ether_dhost;
7890 7891 mhip->mhi_saddr = (uchar_t *)&pether->ether_shost;
7891 7892
7892 7893 if (!(mhip->mhi_daddr[0] & 0x01))
7893 7894 return;
7894 7895
7895 7896 /* Multicast or broadcast */
7896 7897 mhip->mhi_dsttype = MAC_ADDRTYPE_MULTICAST;
7897 7898
7898 7899 if ((bmp = ill->ill_bcast_mp) != NULL) {
7899 7900 dl_unitdata_req_t *dlur;
7900 7901 uint8_t *bphys_addr;
7901 7902 uint_t addrlen;
7902 7903
7903 7904 dlur = (dl_unitdata_req_t *)bmp->b_rptr;
7904 7905 addrlen = dlur->dl_dest_addr_length;
7905 7906 if (ill->ill_sap_length < 0) {
7906 7907 bphys_addr = (uchar_t *)dlur +
7907 7908 dlur->dl_dest_addr_offset;
7908 7909 addrlen += ill->ill_sap_length;
7909 7910 } else {
7910 7911 bphys_addr = (uchar_t *)dlur +
7911 7912 dlur->dl_dest_addr_offset +
7912 7913 ill->ill_sap_length;
7913 7914 addrlen -= ill->ill_sap_length;
7914 7915 }
7915 7916 if (bcmp(mhip->mhi_daddr, bphys_addr, addrlen) == 0)
7916 7917 mhip->mhi_dsttype = MAC_ADDRTYPE_BROADCAST;
7917 7918 }
7918 7919 }
7919 7920
7920 7921 /*
7921 7922 * Handle anything but M_DATA messages
7922 7923 * We see the DL_UNITDATA_IND which are part
7923 7924 * of the data path, and also the other messages from the driver.
7924 7925 */
7925 7926 void
7926 7927 ip_rput_notdata(ill_t *ill, mblk_t *mp)
7927 7928 {
7928 7929 mblk_t *first_mp;
7929 7930 struct iocblk *iocp;
7930 7931 struct mac_header_info_s mhi;
7931 7932
7932 7933 switch (DB_TYPE(mp)) {
7933 7934 case M_PROTO:
7934 7935 case M_PCPROTO: {
7935 7936 if (((dl_unitdata_ind_t *)mp->b_rptr)->dl_primitive !=
7936 7937 DL_UNITDATA_IND) {
7937 7938 /* Go handle anything other than data elsewhere. */
7938 7939 ip_rput_dlpi(ill, mp);
7939 7940 return;
7940 7941 }
7941 7942
7942 7943 first_mp = mp;
7943 7944 mp = first_mp->b_cont;
7944 7945 first_mp->b_cont = NULL;
7945 7946
7946 7947 if (mp == NULL) {
7947 7948 freeb(first_mp);
7948 7949 return;
7949 7950 }
7950 7951 ip_dlur_to_mhi(ill, first_mp, &mhi);
7951 7952 if (ill->ill_isv6)
7952 7953 ip_input_v6(ill, NULL, mp, &mhi);
7953 7954 else
7954 7955 ip_input(ill, NULL, mp, &mhi);
7955 7956
7956 7957 /* Ditch the DLPI header. */
7957 7958 freeb(first_mp);
7958 7959 return;
7959 7960 }
7960 7961 case M_IOCACK:
7961 7962 iocp = (struct iocblk *)mp->b_rptr;
7962 7963 switch (iocp->ioc_cmd) {
7963 7964 case DL_IOC_HDR_INFO:
7964 7965 ill_fastpath_ack(ill, mp);
7965 7966 return;
7966 7967 default:
7967 7968 putnext(ill->ill_rq, mp);
7968 7969 return;
7969 7970 }
7970 7971 /* FALLTHROUGH */
7971 7972 case M_ERROR:
7972 7973 case M_HANGUP:
7973 7974 mutex_enter(&ill->ill_lock);
7974 7975 if (ill->ill_state_flags & ILL_CONDEMNED) {
7975 7976 mutex_exit(&ill->ill_lock);
7976 7977 freemsg(mp);
7977 7978 return;
7978 7979 }
7979 7980 ill_refhold_locked(ill);
7980 7981 mutex_exit(&ill->ill_lock);
7981 7982 qwriter_ip(ill, ill->ill_rq, mp, ip_rput_other, CUR_OP,
7982 7983 B_FALSE);
7983 7984 return;
7984 7985 case M_CTL:
7985 7986 putnext(ill->ill_rq, mp);
7986 7987 return;
7987 7988 case M_IOCNAK:
7988 7989 ip1dbg(("got iocnak "));
7989 7990 iocp = (struct iocblk *)mp->b_rptr;
7990 7991 switch (iocp->ioc_cmd) {
7991 7992 case DL_IOC_HDR_INFO:
7992 7993 ip_rput_other(NULL, ill->ill_rq, mp, NULL);
7993 7994 return;
7994 7995 default:
7995 7996 break;
7996 7997 }
7997 7998 /* FALLTHROUGH */
7998 7999 default:
7999 8000 putnext(ill->ill_rq, mp);
8000 8001 return;
8001 8002 }
8002 8003 }
8003 8004
8004 8005 /* Read side put procedure. Packets coming from the wire arrive here. */
8005 8006 int
8006 8007 ip_rput(queue_t *q, mblk_t *mp)
8007 8008 {
8008 8009 ill_t *ill;
8009 8010 union DL_primitives *dl;
8010 8011
8011 8012 ill = (ill_t *)q->q_ptr;
8012 8013
8013 8014 if (ill->ill_state_flags & (ILL_CONDEMNED | ILL_LL_SUBNET_PENDING)) {
8014 8015 /*
8015 8016 * If things are opening or closing, only accept high-priority
8016 8017 * DLPI messages. (On open ill->ill_ipif has not yet been
8017 8018 * created; on close, things hanging off the ill may have been
8018 8019 * freed already.)
8019 8020 */
8020 8021 dl = (union DL_primitives *)mp->b_rptr;
8021 8022 if (DB_TYPE(mp) != M_PCPROTO ||
8022 8023 dl->dl_primitive == DL_UNITDATA_IND) {
8023 8024 inet_freemsg(mp);
8024 8025 return (0);
8025 8026 }
8026 8027 }
8027 8028 if (DB_TYPE(mp) == M_DATA) {
8028 8029 struct mac_header_info_s mhi;
8029 8030
8030 8031 ip_mdata_to_mhi(ill, mp, &mhi);
8031 8032 ip_input(ill, NULL, mp, &mhi);
8032 8033 } else {
8033 8034 ip_rput_notdata(ill, mp);
8034 8035 }
8035 8036 return (0);
8036 8037 }
8037 8038
8038 8039 /*
8039 8040 * Move the information to a copy.
8040 8041 */
8041 8042 mblk_t *
8042 8043 ip_fix_dbref(mblk_t *mp, ip_recv_attr_t *ira)
8043 8044 {
8044 8045 mblk_t *mp1;
8045 8046 ill_t *ill = ira->ira_ill;
8046 8047 ip_stack_t *ipst = ill->ill_ipst;
8047 8048
8048 8049 IP_STAT(ipst, ip_db_ref);
8049 8050
8050 8051 /* Make sure we have ira_l2src before we loose the original mblk */
8051 8052 if (!(ira->ira_flags & IRAF_L2SRC_SET))
8052 8053 ip_setl2src(mp, ira, ira->ira_rill);
8053 8054
8054 8055 mp1 = copymsg(mp);
8055 8056 if (mp1 == NULL) {
8056 8057 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
8057 8058 ip_drop_input("ipIfStatsInDiscards", mp, ill);
8058 8059 freemsg(mp);
8059 8060 return (NULL);
8060 8061 }
8061 8062 /* preserve the hardware checksum flags and data, if present */
8062 8063 if (DB_CKSUMFLAGS(mp) != 0) {
8063 8064 DB_CKSUMFLAGS(mp1) = DB_CKSUMFLAGS(mp);
8064 8065 DB_CKSUMSTART(mp1) = DB_CKSUMSTART(mp);
8065 8066 DB_CKSUMSTUFF(mp1) = DB_CKSUMSTUFF(mp);
8066 8067 DB_CKSUMEND(mp1) = DB_CKSUMEND(mp);
8067 8068 DB_CKSUM16(mp1) = DB_CKSUM16(mp);
8068 8069 }
8069 8070 freemsg(mp);
8070 8071 return (mp1);
8071 8072 }
8072 8073
8073 8074 static void
8074 8075 ip_dlpi_error(ill_t *ill, t_uscalar_t prim, t_uscalar_t dl_err,
8075 8076 t_uscalar_t err)
8076 8077 {
8077 8078 if (dl_err == DL_SYSERR) {
8078 8079 (void) mi_strlog(ill->ill_rq, 1, SL_CONSOLE|SL_ERROR|SL_TRACE,
8079 8080 "%s: %s failed: DL_SYSERR (errno %u)\n",
8080 8081 ill->ill_name, dl_primstr(prim), err);
8081 8082 return;
8082 8083 }
8083 8084
8084 8085 (void) mi_strlog(ill->ill_rq, 1, SL_CONSOLE|SL_ERROR|SL_TRACE,
8085 8086 "%s: %s failed: %s\n", ill->ill_name, dl_primstr(prim),
8086 8087 dl_errstr(dl_err));
8087 8088 }
8088 8089
8089 8090 /*
8090 8091 * ip_rput_dlpi is called by ip_rput to handle all DLPI messages other
8091 8092 * than DL_UNITDATA_IND messages. If we need to process this message
8092 8093 * exclusively, we call qwriter_ip, in which case we also need to call
8093 8094 * ill_refhold before that, since qwriter_ip does an ill_refrele.
8094 8095 */
8095 8096 void
8096 8097 ip_rput_dlpi(ill_t *ill, mblk_t *mp)
8097 8098 {
8098 8099 dl_ok_ack_t *dloa = (dl_ok_ack_t *)mp->b_rptr;
8099 8100 dl_error_ack_t *dlea = (dl_error_ack_t *)dloa;
8100 8101 queue_t *q = ill->ill_rq;
8101 8102 t_uscalar_t prim = dloa->dl_primitive;
8102 8103 t_uscalar_t reqprim = DL_PRIM_INVAL;
8103 8104
8104 8105 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi",
8105 8106 char *, dl_primstr(prim), ill_t *, ill);
8106 8107 ip1dbg(("ip_rput_dlpi"));
8107 8108
8108 8109 /*
8109 8110 * If we received an ACK but didn't send a request for it, then it
8110 8111 * can't be part of any pending operation; discard up-front.
8111 8112 */
8112 8113 switch (prim) {
8113 8114 case DL_ERROR_ACK:
8114 8115 reqprim = dlea->dl_error_primitive;
8115 8116 ip2dbg(("ip_rput_dlpi(%s): DL_ERROR_ACK for %s (0x%x): %s "
8116 8117 "(0x%x), unix %u\n", ill->ill_name, dl_primstr(reqprim),
8117 8118 reqprim, dl_errstr(dlea->dl_errno), dlea->dl_errno,
8118 8119 dlea->dl_unix_errno));
8119 8120 break;
8120 8121 case DL_OK_ACK:
8121 8122 reqprim = dloa->dl_correct_primitive;
8122 8123 break;
8123 8124 case DL_INFO_ACK:
8124 8125 reqprim = DL_INFO_REQ;
8125 8126 break;
8126 8127 case DL_BIND_ACK:
8127 8128 reqprim = DL_BIND_REQ;
8128 8129 break;
8129 8130 case DL_PHYS_ADDR_ACK:
8130 8131 reqprim = DL_PHYS_ADDR_REQ;
8131 8132 break;
8132 8133 case DL_NOTIFY_ACK:
8133 8134 reqprim = DL_NOTIFY_REQ;
8134 8135 break;
8135 8136 case DL_CAPABILITY_ACK:
8136 8137 reqprim = DL_CAPABILITY_REQ;
8137 8138 break;
8138 8139 }
8139 8140
8140 8141 if (prim != DL_NOTIFY_IND) {
8141 8142 if (reqprim == DL_PRIM_INVAL ||
8142 8143 !ill_dlpi_pending(ill, reqprim)) {
8143 8144 /* Not a DLPI message we support or expected */
8144 8145 freemsg(mp);
8145 8146 return;
8146 8147 }
8147 8148 ip1dbg(("ip_rput: received %s for %s\n", dl_primstr(prim),
8148 8149 dl_primstr(reqprim)));
8149 8150 }
8150 8151
8151 8152 switch (reqprim) {
8152 8153 case DL_UNBIND_REQ:
8153 8154 /*
8154 8155 * NOTE: we mark the unbind as complete even if we got a
8155 8156 * DL_ERROR_ACK, since there's not much else we can do.
8156 8157 */
8157 8158 mutex_enter(&ill->ill_lock);
8158 8159 ill->ill_state_flags &= ~ILL_DL_UNBIND_IN_PROGRESS;
8159 8160 cv_signal(&ill->ill_cv);
8160 8161 mutex_exit(&ill->ill_lock);
8161 8162 break;
8162 8163
8163 8164 case DL_ENABMULTI_REQ:
8164 8165 if (prim == DL_OK_ACK) {
8165 8166 if (ill->ill_dlpi_multicast_state == IDS_INPROGRESS)
8166 8167 ill->ill_dlpi_multicast_state = IDS_OK;
8167 8168 }
8168 8169 break;
8169 8170 }
8170 8171
8171 8172 /*
8172 8173 * The message is one we're waiting for (or DL_NOTIFY_IND), but we
8173 8174 * need to become writer to continue to process it. Because an
8174 8175 * exclusive operation doesn't complete until replies to all queued
8175 8176 * DLPI messages have been received, we know we're in the middle of an
8176 8177 * exclusive operation and pass CUR_OP (except for DL_NOTIFY_IND).
8177 8178 *
8178 8179 * As required by qwriter_ip(), we refhold the ill; it will refrele.
8179 8180 * Since this is on the ill stream we unconditionally bump up the
8180 8181 * refcount without doing ILL_CAN_LOOKUP().
8181 8182 */
8182 8183 ill_refhold(ill);
8183 8184 if (prim == DL_NOTIFY_IND)
8184 8185 qwriter_ip(ill, q, mp, ip_rput_dlpi_writer, NEW_OP, B_FALSE);
8185 8186 else
8186 8187 qwriter_ip(ill, q, mp, ip_rput_dlpi_writer, CUR_OP, B_FALSE);
8187 8188 }
8188 8189
8189 8190 /*
8190 8191 * Handling of DLPI messages that require exclusive access to the ipsq.
8191 8192 *
8192 8193 * Need to do ipsq_pending_mp_get on ioctl completion, which could
8193 8194 * happen here. (along with mi_copy_done)
8194 8195 */
8195 8196 /* ARGSUSED */
8196 8197 static void
8197 8198 ip_rput_dlpi_writer(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *dummy_arg)
8198 8199 {
8199 8200 dl_ok_ack_t *dloa = (dl_ok_ack_t *)mp->b_rptr;
8200 8201 dl_error_ack_t *dlea = (dl_error_ack_t *)dloa;
8201 8202 int err = 0;
8202 8203 ill_t *ill = (ill_t *)q->q_ptr;
8203 8204 ipif_t *ipif = NULL;
8204 8205 mblk_t *mp1 = NULL;
8205 8206 conn_t *connp = NULL;
8206 8207 t_uscalar_t paddrreq;
8207 8208 mblk_t *mp_hw;
8208 8209 boolean_t success;
8209 8210 boolean_t ioctl_aborted = B_FALSE;
8210 8211 boolean_t log = B_TRUE;
8211 8212
8212 8213 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi_writer",
8213 8214 char *, dl_primstr(dloa->dl_primitive), ill_t *, ill);
8214 8215
8215 8216 ip1dbg(("ip_rput_dlpi_writer .."));
8216 8217 ASSERT(ipsq->ipsq_xop == ill->ill_phyint->phyint_ipsq->ipsq_xop);
8217 8218 ASSERT(IAM_WRITER_ILL(ill));
8218 8219
8219 8220 ipif = ipsq->ipsq_xop->ipx_pending_ipif;
8220 8221 /*
8221 8222 * The current ioctl could have been aborted by the user and a new
8222 8223 * ioctl to bring up another ill could have started. We could still
8223 8224 * get a response from the driver later.
8224 8225 */
8225 8226 if (ipif != NULL && ipif->ipif_ill != ill)
8226 8227 ioctl_aborted = B_TRUE;
8227 8228
8228 8229 switch (dloa->dl_primitive) {
8229 8230 case DL_ERROR_ACK:
8230 8231 ip1dbg(("ip_rput_dlpi_writer: got DL_ERROR_ACK for %s\n",
8231 8232 dl_primstr(dlea->dl_error_primitive)));
8232 8233
8233 8234 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi_writer error",
8234 8235 char *, dl_primstr(dlea->dl_error_primitive),
8235 8236 ill_t *, ill);
8236 8237
8237 8238 switch (dlea->dl_error_primitive) {
8238 8239 case DL_DISABMULTI_REQ:
8239 8240 ill_dlpi_done(ill, dlea->dl_error_primitive);
8240 8241 break;
8241 8242 case DL_PROMISCON_REQ:
8242 8243 case DL_PROMISCOFF_REQ:
8243 8244 case DL_UNBIND_REQ:
8244 8245 case DL_ATTACH_REQ:
8245 8246 case DL_INFO_REQ:
8246 8247 ill_dlpi_done(ill, dlea->dl_error_primitive);
8247 8248 break;
8248 8249 case DL_NOTIFY_REQ:
8249 8250 ill_dlpi_done(ill, DL_NOTIFY_REQ);
8250 8251 log = B_FALSE;
8251 8252 break;
8252 8253 case DL_PHYS_ADDR_REQ:
8253 8254 /*
8254 8255 * For IPv6 only, there are two additional
8255 8256 * phys_addr_req's sent to the driver to get the
8256 8257 * IPv6 token and lla. This allows IP to acquire
8257 8258 * the hardware address format for a given interface
8258 8259 * without having built in knowledge of the hardware
8259 8260 * address. ill_phys_addr_pend keeps track of the last
8260 8261 * DL_PAR sent so we know which response we are
8261 8262 * dealing with. ill_dlpi_done will update
8262 8263 * ill_phys_addr_pend when it sends the next req.
8263 8264 * We don't complete the IOCTL until all three DL_PARs
8264 8265 * have been attempted, so set *_len to 0 and break.
8265 8266 */
8266 8267 paddrreq = ill->ill_phys_addr_pend;
8267 8268 ill_dlpi_done(ill, DL_PHYS_ADDR_REQ);
8268 8269 if (paddrreq == DL_IPV6_TOKEN) {
8269 8270 ill->ill_token_length = 0;
8270 8271 log = B_FALSE;
8271 8272 break;
8272 8273 } else if (paddrreq == DL_IPV6_LINK_LAYER_ADDR) {
8273 8274 ill->ill_nd_lla_len = 0;
8274 8275 log = B_FALSE;
8275 8276 break;
8276 8277 }
8277 8278 /*
8278 8279 * Something went wrong with the DL_PHYS_ADDR_REQ.
8279 8280 * We presumably have an IOCTL hanging out waiting
8280 8281 * for completion. Find it and complete the IOCTL
8281 8282 * with the error noted.
8282 8283 * However, ill_dl_phys was called on an ill queue
8283 8284 * (from SIOCSLIFNAME), thus conn_pending_ill is not
8284 8285 * set. But the ioctl is known to be pending on ill_wq.
8285 8286 */
8286 8287 if (!ill->ill_ifname_pending)
8287 8288 break;
8288 8289 ill->ill_ifname_pending = 0;
8289 8290 if (!ioctl_aborted)
8290 8291 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8291 8292 if (mp1 != NULL) {
8292 8293 /*
8293 8294 * This operation (SIOCSLIFNAME) must have
8294 8295 * happened on the ill. Assert there is no conn
8295 8296 */
8296 8297 ASSERT(connp == NULL);
8297 8298 q = ill->ill_wq;
8298 8299 }
8299 8300 break;
8300 8301 case DL_BIND_REQ:
8301 8302 ill_dlpi_done(ill, DL_BIND_REQ);
8302 8303 if (ill->ill_ifname_pending)
8303 8304 break;
8304 8305 mutex_enter(&ill->ill_lock);
8305 8306 ill->ill_state_flags &= ~ILL_DOWN_IN_PROGRESS;
8306 8307 mutex_exit(&ill->ill_lock);
8307 8308 /*
8308 8309 * Something went wrong with the bind. We presumably
8309 8310 * have an IOCTL hanging out waiting for completion.
8310 8311 * Find it, take down the interface that was coming
8311 8312 * up, and complete the IOCTL with the error noted.
8312 8313 */
8313 8314 if (!ioctl_aborted)
8314 8315 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8315 8316 if (mp1 != NULL) {
8316 8317 /*
8317 8318 * This might be a result of a DL_NOTE_REPLUMB
8318 8319 * notification. In that case, connp is NULL.
8319 8320 */
8320 8321 if (connp != NULL)
8321 8322 q = CONNP_TO_WQ(connp);
8322 8323
8323 8324 (void) ipif_down(ipif, NULL, NULL);
8324 8325 /* error is set below the switch */
8325 8326 }
8326 8327 break;
8327 8328 case DL_ENABMULTI_REQ:
8328 8329 ill_dlpi_done(ill, DL_ENABMULTI_REQ);
8329 8330
8330 8331 if (ill->ill_dlpi_multicast_state == IDS_INPROGRESS)
8331 8332 ill->ill_dlpi_multicast_state = IDS_FAILED;
8332 8333 if (ill->ill_dlpi_multicast_state == IDS_FAILED) {
8333 8334
8334 8335 printf("ip: joining multicasts failed (%d)"
8335 8336 " on %s - will use link layer "
8336 8337 "broadcasts for multicast\n",
8337 8338 dlea->dl_errno, ill->ill_name);
8338 8339
8339 8340 /*
8340 8341 * Set up for multi_bcast; We are the
8341 8342 * writer, so ok to access ill->ill_ipif
8342 8343 * without any lock.
8343 8344 */
8344 8345 mutex_enter(&ill->ill_phyint->phyint_lock);
8345 8346 ill->ill_phyint->phyint_flags |=
8346 8347 PHYI_MULTI_BCAST;
8347 8348 mutex_exit(&ill->ill_phyint->phyint_lock);
8348 8349
8349 8350 }
8350 8351 freemsg(mp); /* Don't want to pass this up */
8351 8352 return;
8352 8353 case DL_CAPABILITY_REQ:
8353 8354 ip1dbg(("ip_rput_dlpi_writer: got DL_ERROR_ACK for "
8354 8355 "DL_CAPABILITY REQ\n"));
8355 8356 if (ill->ill_dlpi_capab_state == IDCS_PROBE_SENT)
8356 8357 ill->ill_dlpi_capab_state = IDCS_FAILED;
8357 8358 ill_capability_done(ill);
8358 8359 freemsg(mp);
8359 8360 return;
8360 8361 }
8361 8362 /*
8362 8363 * Note the error for IOCTL completion (mp1 is set when
8363 8364 * ready to complete ioctl). If ill_ifname_pending_err is
8364 8365 * set, an error occured during plumbing (ill_ifname_pending),
8365 8366 * so we want to report that error.
8366 8367 *
8367 8368 * NOTE: there are two addtional DL_PHYS_ADDR_REQ's
8368 8369 * (DL_IPV6_TOKEN and DL_IPV6_LINK_LAYER_ADDR) that are
8369 8370 * expected to get errack'd if the driver doesn't support
8370 8371 * these flags (e.g. ethernet). log will be set to B_FALSE
8371 8372 * if these error conditions are encountered.
8372 8373 */
8373 8374 if (mp1 != NULL) {
8374 8375 if (ill->ill_ifname_pending_err != 0) {
8375 8376 err = ill->ill_ifname_pending_err;
8376 8377 ill->ill_ifname_pending_err = 0;
8377 8378 } else {
8378 8379 err = dlea->dl_unix_errno ?
8379 8380 dlea->dl_unix_errno : ENXIO;
8380 8381 }
8381 8382 /*
8382 8383 * If we're plumbing an interface and an error hasn't already
8383 8384 * been saved, set ill_ifname_pending_err to the error passed
8384 8385 * up. Ignore the error if log is B_FALSE (see comment above).
8385 8386 */
8386 8387 } else if (log && ill->ill_ifname_pending &&
8387 8388 ill->ill_ifname_pending_err == 0) {
8388 8389 ill->ill_ifname_pending_err = dlea->dl_unix_errno ?
8389 8390 dlea->dl_unix_errno : ENXIO;
8390 8391 }
8391 8392
8392 8393 if (log)
8393 8394 ip_dlpi_error(ill, dlea->dl_error_primitive,
8394 8395 dlea->dl_errno, dlea->dl_unix_errno);
8395 8396 break;
8396 8397 case DL_CAPABILITY_ACK:
8397 8398 ill_capability_ack(ill, mp);
8398 8399 /*
8399 8400 * The message has been handed off to ill_capability_ack
8400 8401 * and must not be freed below
8401 8402 */
8402 8403 mp = NULL;
8403 8404 break;
8404 8405
8405 8406 case DL_INFO_ACK:
8406 8407 /* Call a routine to handle this one. */
8407 8408 ill_dlpi_done(ill, DL_INFO_REQ);
8408 8409 ip_ll_subnet_defaults(ill, mp);
8409 8410 ASSERT(!MUTEX_HELD(&ill->ill_phyint->phyint_ipsq->ipsq_lock));
8410 8411 return;
8411 8412 case DL_BIND_ACK:
8412 8413 /*
8413 8414 * We should have an IOCTL waiting on this unless
8414 8415 * sent by ill_dl_phys, in which case just return
8415 8416 */
8416 8417 ill_dlpi_done(ill, DL_BIND_REQ);
8417 8418
8418 8419 if (ill->ill_ifname_pending) {
8419 8420 DTRACE_PROBE2(ip__rput__dlpi__ifname__pending,
8420 8421 ill_t *, ill, mblk_t *, mp);
8421 8422 break;
8422 8423 }
8423 8424 mutex_enter(&ill->ill_lock);
8424 8425 ill->ill_dl_up = 1;
8425 8426 ill->ill_state_flags &= ~ILL_DOWN_IN_PROGRESS;
8426 8427 mutex_exit(&ill->ill_lock);
8427 8428
8428 8429 if (!ioctl_aborted)
8429 8430 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8430 8431 if (mp1 == NULL) {
8431 8432 DTRACE_PROBE1(ip__rput__dlpi__no__mblk, ill_t *, ill);
8432 8433 break;
8433 8434 }
8434 8435 /*
8435 8436 * mp1 was added by ill_dl_up(). if that is a result of
8436 8437 * a DL_NOTE_REPLUMB notification, connp could be NULL.
8437 8438 */
8438 8439 if (connp != NULL)
8439 8440 q = CONNP_TO_WQ(connp);
8440 8441 /*
8441 8442 * We are exclusive. So nothing can change even after
8442 8443 * we get the pending mp.
8443 8444 */
8444 8445 ip1dbg(("ip_rput_dlpi: bind_ack %s\n", ill->ill_name));
8445 8446 DTRACE_PROBE1(ip__rput__dlpi__bind__ack, ill_t *, ill);
8446 8447 ill_nic_event_dispatch(ill, 0, NE_UP, NULL, 0);
8447 8448
8448 8449 /*
8449 8450 * Now bring up the resolver; when that is complete, we'll
8450 8451 * create IREs. Note that we intentionally mirror what
8451 8452 * ipif_up() would have done, because we got here by way of
8452 8453 * ill_dl_up(), which stopped ipif_up()'s processing.
8453 8454 */
8454 8455 if (ill->ill_isv6) {
8455 8456 /*
8456 8457 * v6 interfaces.
8457 8458 * Unlike ARP which has to do another bind
8458 8459 * and attach, once we get here we are
8459 8460 * done with NDP
8460 8461 */
8461 8462 (void) ipif_resolver_up(ipif, Res_act_initial);
8462 8463 if ((err = ipif_ndp_up(ipif, B_TRUE)) == 0)
8463 8464 err = ipif_up_done_v6(ipif);
8464 8465 } else if (ill->ill_net_type == IRE_IF_RESOLVER) {
8465 8466 /*
8466 8467 * ARP and other v4 external resolvers.
8467 8468 * Leave the pending mblk intact so that
8468 8469 * the ioctl completes in ip_rput().
8469 8470 */
8470 8471 if (connp != NULL)
8471 8472 mutex_enter(&connp->conn_lock);
8472 8473 mutex_enter(&ill->ill_lock);
8473 8474 success = ipsq_pending_mp_add(connp, ipif, q, mp1, 0);
8474 8475 mutex_exit(&ill->ill_lock);
8475 8476 if (connp != NULL)
8476 8477 mutex_exit(&connp->conn_lock);
8477 8478 if (success) {
8478 8479 err = ipif_resolver_up(ipif, Res_act_initial);
8479 8480 if (err == EINPROGRESS) {
8480 8481 freemsg(mp);
8481 8482 return;
8482 8483 }
8483 8484 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8484 8485 } else {
8485 8486 /* The conn has started closing */
8486 8487 err = EINTR;
8487 8488 }
8488 8489 } else {
8489 8490 /*
8490 8491 * This one is complete. Reply to pending ioctl.
8491 8492 */
8492 8493 (void) ipif_resolver_up(ipif, Res_act_initial);
8493 8494 err = ipif_up_done(ipif);
8494 8495 }
8495 8496
8496 8497 if ((err == 0) && (ill->ill_up_ipifs)) {
8497 8498 err = ill_up_ipifs(ill, q, mp1);
8498 8499 if (err == EINPROGRESS) {
8499 8500 freemsg(mp);
8500 8501 return;
8501 8502 }
8502 8503 }
8503 8504
8504 8505 /*
8505 8506 * If we have a moved ipif to bring up, and everything has
8506 8507 * succeeded to this point, bring it up on the IPMP ill.
8507 8508 * Otherwise, leave it down -- the admin can try to bring it
8508 8509 * up by hand if need be.
8509 8510 */
8510 8511 if (ill->ill_move_ipif != NULL) {
8511 8512 if (err != 0) {
8512 8513 ill->ill_move_ipif = NULL;
8513 8514 } else {
8514 8515 ipif = ill->ill_move_ipif;
8515 8516 ill->ill_move_ipif = NULL;
8516 8517 err = ipif_up(ipif, q, mp1);
8517 8518 if (err == EINPROGRESS) {
8518 8519 freemsg(mp);
8519 8520 return;
8520 8521 }
8521 8522 }
8522 8523 }
8523 8524 break;
8524 8525
8525 8526 case DL_NOTIFY_IND: {
8526 8527 dl_notify_ind_t *notify = (dl_notify_ind_t *)mp->b_rptr;
8527 8528 uint_t orig_mtu, orig_mc_mtu;
8528 8529
8529 8530 switch (notify->dl_notification) {
8530 8531 case DL_NOTE_PHYS_ADDR:
8531 8532 err = ill_set_phys_addr(ill, mp);
8532 8533 break;
8533 8534
8534 8535 case DL_NOTE_REPLUMB:
8535 8536 /*
8536 8537 * Directly return after calling ill_replumb().
8537 8538 * Note that we should not free mp as it is reused
8538 8539 * in the ill_replumb() function.
8539 8540 */
8540 8541 err = ill_replumb(ill, mp);
8541 8542 return;
8542 8543
8543 8544 case DL_NOTE_FASTPATH_FLUSH:
8544 8545 nce_flush(ill, B_FALSE);
8545 8546 break;
8546 8547
8547 8548 case DL_NOTE_SDU_SIZE:
8548 8549 case DL_NOTE_SDU_SIZE2:
8549 8550 /*
8550 8551 * The dce and fragmentation code can cope with
8551 8552 * this changing while packets are being sent.
8552 8553 * When packets are sent ip_output will discover
8553 8554 * a change.
8554 8555 *
8555 8556 * Change the MTU size of the interface.
8556 8557 */
8557 8558 mutex_enter(&ill->ill_lock);
8558 8559 orig_mtu = ill->ill_mtu;
8559 8560 orig_mc_mtu = ill->ill_mc_mtu;
8560 8561 switch (notify->dl_notification) {
8561 8562 case DL_NOTE_SDU_SIZE:
8562 8563 ill->ill_current_frag =
8563 8564 (uint_t)notify->dl_data;
8564 8565 ill->ill_mc_mtu = (uint_t)notify->dl_data;
8565 8566 break;
8566 8567 case DL_NOTE_SDU_SIZE2:
8567 8568 ill->ill_current_frag =
8568 8569 (uint_t)notify->dl_data1;
8569 8570 ill->ill_mc_mtu = (uint_t)notify->dl_data2;
8570 8571 break;
8571 8572 }
8572 8573 if (ill->ill_current_frag > ill->ill_max_frag)
8573 8574 ill->ill_max_frag = ill->ill_current_frag;
8574 8575
8575 8576 if (!(ill->ill_flags & ILLF_FIXEDMTU)) {
8576 8577 ill->ill_mtu = ill->ill_current_frag;
8577 8578
8578 8579 /*
8579 8580 * If ill_user_mtu was set (via
8580 8581 * SIOCSLIFLNKINFO), clamp ill_mtu at it.
8581 8582 */
8582 8583 if (ill->ill_user_mtu != 0 &&
8583 8584 ill->ill_user_mtu < ill->ill_mtu)
8584 8585 ill->ill_mtu = ill->ill_user_mtu;
8585 8586
8586 8587 if (ill->ill_user_mtu != 0 &&
8587 8588 ill->ill_user_mtu < ill->ill_mc_mtu)
8588 8589 ill->ill_mc_mtu = ill->ill_user_mtu;
8589 8590
8590 8591 if (ill->ill_isv6) {
8591 8592 if (ill->ill_mtu < IPV6_MIN_MTU)
8592 8593 ill->ill_mtu = IPV6_MIN_MTU;
8593 8594 if (ill->ill_mc_mtu < IPV6_MIN_MTU)
8594 8595 ill->ill_mc_mtu = IPV6_MIN_MTU;
8595 8596 } else {
8596 8597 if (ill->ill_mtu < IP_MIN_MTU)
8597 8598 ill->ill_mtu = IP_MIN_MTU;
8598 8599 if (ill->ill_mc_mtu < IP_MIN_MTU)
8599 8600 ill->ill_mc_mtu = IP_MIN_MTU;
8600 8601 }
8601 8602 } else if (ill->ill_mc_mtu > ill->ill_mtu) {
8602 8603 ill->ill_mc_mtu = ill->ill_mtu;
8603 8604 }
8604 8605
8605 8606 mutex_exit(&ill->ill_lock);
8606 8607 /*
8607 8608 * Make sure all dce_generation checks find out
8608 8609 * that ill_mtu/ill_mc_mtu has changed.
8609 8610 */
8610 8611 if (orig_mtu != ill->ill_mtu ||
8611 8612 orig_mc_mtu != ill->ill_mc_mtu) {
8612 8613 dce_increment_all_generations(ill->ill_isv6,
8613 8614 ill->ill_ipst);
8614 8615 }
8615 8616
8616 8617 /*
8617 8618 * Refresh IPMP meta-interface MTU if necessary.
8618 8619 */
8619 8620 if (IS_UNDER_IPMP(ill))
8620 8621 ipmp_illgrp_refresh_mtu(ill->ill_grp);
8621 8622 break;
8622 8623
8623 8624 case DL_NOTE_LINK_UP:
8624 8625 case DL_NOTE_LINK_DOWN: {
8625 8626 /*
8626 8627 * We are writer. ill / phyint / ipsq assocs stable.
8627 8628 * The RUNNING flag reflects the state of the link.
8628 8629 */
8629 8630 phyint_t *phyint = ill->ill_phyint;
8630 8631 uint64_t new_phyint_flags;
8631 8632 boolean_t changed = B_FALSE;
8632 8633 boolean_t went_up;
8633 8634
8634 8635 went_up = notify->dl_notification == DL_NOTE_LINK_UP;
8635 8636 mutex_enter(&phyint->phyint_lock);
8636 8637
8637 8638 new_phyint_flags = went_up ?
8638 8639 phyint->phyint_flags | PHYI_RUNNING :
8639 8640 phyint->phyint_flags & ~PHYI_RUNNING;
8640 8641
8641 8642 if (IS_IPMP(ill)) {
8642 8643 new_phyint_flags = went_up ?
8643 8644 new_phyint_flags & ~PHYI_FAILED :
8644 8645 new_phyint_flags | PHYI_FAILED;
8645 8646 }
8646 8647
8647 8648 if (new_phyint_flags != phyint->phyint_flags) {
8648 8649 phyint->phyint_flags = new_phyint_flags;
8649 8650 changed = B_TRUE;
8650 8651 }
8651 8652 mutex_exit(&phyint->phyint_lock);
8652 8653 /*
8653 8654 * ill_restart_dad handles the DAD restart and routing
8654 8655 * socket notification logic.
8655 8656 */
8656 8657 if (changed) {
8657 8658 ill_restart_dad(phyint->phyint_illv4, went_up);
8658 8659 ill_restart_dad(phyint->phyint_illv6, went_up);
8659 8660 }
8660 8661 break;
8661 8662 }
8662 8663 case DL_NOTE_PROMISC_ON_PHYS: {
8663 8664 phyint_t *phyint = ill->ill_phyint;
8664 8665
8665 8666 mutex_enter(&phyint->phyint_lock);
8666 8667 phyint->phyint_flags |= PHYI_PROMISC;
8667 8668 mutex_exit(&phyint->phyint_lock);
8668 8669 break;
8669 8670 }
8670 8671 case DL_NOTE_PROMISC_OFF_PHYS: {
8671 8672 phyint_t *phyint = ill->ill_phyint;
8672 8673
8673 8674 mutex_enter(&phyint->phyint_lock);
8674 8675 phyint->phyint_flags &= ~PHYI_PROMISC;
8675 8676 mutex_exit(&phyint->phyint_lock);
8676 8677 break;
8677 8678 }
8678 8679 case DL_NOTE_CAPAB_RENEG:
8679 8680 /*
8680 8681 * Something changed on the driver side.
8681 8682 * It wants us to renegotiate the capabilities
8682 8683 * on this ill. One possible cause is the aggregation
8683 8684 * interface under us where a port got added or
8684 8685 * went away.
8685 8686 *
8686 8687 * If the capability negotiation is already done
8687 8688 * or is in progress, reset the capabilities and
8688 8689 * mark the ill's ill_capab_reneg to be B_TRUE,
8689 8690 * so that when the ack comes back, we can start
8690 8691 * the renegotiation process.
8691 8692 *
8692 8693 * Note that if ill_capab_reneg is already B_TRUE
8693 8694 * (ill_dlpi_capab_state is IDS_UNKNOWN in this case),
8694 8695 * the capability resetting request has been sent
8695 8696 * and the renegotiation has not been started yet;
8696 8697 * nothing needs to be done in this case.
8697 8698 */
8698 8699 ipsq_current_start(ipsq, ill->ill_ipif, 0);
8699 8700 ill_capability_reset(ill, B_TRUE);
8700 8701 ipsq_current_finish(ipsq);
8701 8702 break;
8702 8703
8703 8704 case DL_NOTE_ALLOWED_IPS:
8704 8705 ill_set_allowed_ips(ill, mp);
8705 8706 break;
8706 8707 default:
8707 8708 ip0dbg(("ip_rput_dlpi_writer: unknown notification "
8708 8709 "type 0x%x for DL_NOTIFY_IND\n",
8709 8710 notify->dl_notification));
8710 8711 break;
8711 8712 }
8712 8713
8713 8714 /*
8714 8715 * As this is an asynchronous operation, we
8715 8716 * should not call ill_dlpi_done
8716 8717 */
8717 8718 break;
8718 8719 }
8719 8720 case DL_NOTIFY_ACK: {
8720 8721 dl_notify_ack_t *noteack = (dl_notify_ack_t *)mp->b_rptr;
8721 8722
8722 8723 if (noteack->dl_notifications & DL_NOTE_LINK_UP)
8723 8724 ill->ill_note_link = 1;
8724 8725 ill_dlpi_done(ill, DL_NOTIFY_REQ);
8725 8726 break;
8726 8727 }
8727 8728 case DL_PHYS_ADDR_ACK: {
8728 8729 /*
8729 8730 * As part of plumbing the interface via SIOCSLIFNAME,
8730 8731 * ill_dl_phys() will queue a series of DL_PHYS_ADDR_REQs,
8731 8732 * whose answers we receive here. As each answer is received,
8732 8733 * we call ill_dlpi_done() to dispatch the next request as
8733 8734 * we're processing the current one. Once all answers have
8734 8735 * been received, we use ipsq_pending_mp_get() to dequeue the
8735 8736 * outstanding IOCTL and reply to it. (Because ill_dl_phys()
8736 8737 * is invoked from an ill queue, conn_oper_pending_ill is not
8737 8738 * available, but we know the ioctl is pending on ill_wq.)
8738 8739 */
8739 8740 uint_t paddrlen, paddroff;
8740 8741 uint8_t *addr;
8741 8742
8742 8743 paddrreq = ill->ill_phys_addr_pend;
8743 8744 paddrlen = ((dl_phys_addr_ack_t *)mp->b_rptr)->dl_addr_length;
8744 8745 paddroff = ((dl_phys_addr_ack_t *)mp->b_rptr)->dl_addr_offset;
8745 8746 addr = mp->b_rptr + paddroff;
8746 8747
8747 8748 ill_dlpi_done(ill, DL_PHYS_ADDR_REQ);
8748 8749 if (paddrreq == DL_IPV6_TOKEN) {
8749 8750 /*
8750 8751 * bcopy to low-order bits of ill_token
8751 8752 *
8752 8753 * XXX Temporary hack - currently, all known tokens
8753 8754 * are 64 bits, so I'll cheat for the moment.
8754 8755 */
8755 8756 bcopy(addr, &ill->ill_token.s6_addr32[2], paddrlen);
8756 8757 ill->ill_token_length = paddrlen;
8757 8758 break;
8758 8759 } else if (paddrreq == DL_IPV6_LINK_LAYER_ADDR) {
8759 8760 ASSERT(ill->ill_nd_lla_mp == NULL);
8760 8761 ill_set_ndmp(ill, mp, paddroff, paddrlen);
8761 8762 mp = NULL;
8762 8763 break;
8763 8764 } else if (paddrreq == DL_CURR_DEST_ADDR) {
8764 8765 ASSERT(ill->ill_dest_addr_mp == NULL);
8765 8766 ill->ill_dest_addr_mp = mp;
8766 8767 ill->ill_dest_addr = addr;
8767 8768 mp = NULL;
8768 8769 if (ill->ill_isv6) {
8769 8770 ill_setdesttoken(ill);
8770 8771 ipif_setdestlinklocal(ill->ill_ipif);
8771 8772 }
8772 8773 break;
8773 8774 }
8774 8775
8775 8776 ASSERT(paddrreq == DL_CURR_PHYS_ADDR);
8776 8777 ASSERT(ill->ill_phys_addr_mp == NULL);
8777 8778 if (!ill->ill_ifname_pending)
8778 8779 break;
8779 8780 ill->ill_ifname_pending = 0;
8780 8781 if (!ioctl_aborted)
8781 8782 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8782 8783 if (mp1 != NULL) {
8783 8784 ASSERT(connp == NULL);
8784 8785 q = ill->ill_wq;
8785 8786 }
8786 8787 /*
8787 8788 * If any error acks received during the plumbing sequence,
8788 8789 * ill_ifname_pending_err will be set. Break out and send up
8789 8790 * the error to the pending ioctl.
8790 8791 */
8791 8792 if (ill->ill_ifname_pending_err != 0) {
8792 8793 err = ill->ill_ifname_pending_err;
8793 8794 ill->ill_ifname_pending_err = 0;
8794 8795 break;
8795 8796 }
8796 8797
8797 8798 ill->ill_phys_addr_mp = mp;
8798 8799 ill->ill_phys_addr = (paddrlen == 0 ? NULL : addr);
8799 8800 mp = NULL;
8800 8801
8801 8802 /*
8802 8803 * If paddrlen or ill_phys_addr_length is zero, the DLPI
8803 8804 * provider doesn't support physical addresses. We check both
8804 8805 * paddrlen and ill_phys_addr_length because sppp (PPP) does
8805 8806 * not have physical addresses, but historically adversises a
8806 8807 * physical address length of 0 in its DL_INFO_ACK, but 6 in
8807 8808 * its DL_PHYS_ADDR_ACK.
8808 8809 */
8809 8810 if (paddrlen == 0 || ill->ill_phys_addr_length == 0) {
8810 8811 ill->ill_phys_addr = NULL;
8811 8812 } else if (paddrlen != ill->ill_phys_addr_length) {
8812 8813 ip0dbg(("DL_PHYS_ADDR_ACK: got addrlen %d, expected %d",
8813 8814 paddrlen, ill->ill_phys_addr_length));
8814 8815 err = EINVAL;
8815 8816 break;
8816 8817 }
8817 8818
8818 8819 if (ill->ill_nd_lla_mp == NULL) {
8819 8820 if ((mp_hw = copyb(ill->ill_phys_addr_mp)) == NULL) {
8820 8821 err = ENOMEM;
8821 8822 break;
8822 8823 }
8823 8824 ill_set_ndmp(ill, mp_hw, paddroff, paddrlen);
8824 8825 }
8825 8826
8826 8827 if (ill->ill_isv6) {
8827 8828 ill_setdefaulttoken(ill);
8828 8829 ipif_setlinklocal(ill->ill_ipif);
8829 8830 }
8830 8831 break;
8831 8832 }
8832 8833 case DL_OK_ACK:
8833 8834 ip2dbg(("DL_OK_ACK %s (0x%x)\n",
8834 8835 dl_primstr((int)dloa->dl_correct_primitive),
8835 8836 dloa->dl_correct_primitive));
8836 8837 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi_writer ok",
8837 8838 char *, dl_primstr(dloa->dl_correct_primitive),
8838 8839 ill_t *, ill);
8839 8840
8840 8841 switch (dloa->dl_correct_primitive) {
8841 8842 case DL_ENABMULTI_REQ:
8842 8843 case DL_DISABMULTI_REQ:
8843 8844 ill_dlpi_done(ill, dloa->dl_correct_primitive);
8844 8845 break;
8845 8846 case DL_PROMISCON_REQ:
8846 8847 case DL_PROMISCOFF_REQ:
8847 8848 case DL_UNBIND_REQ:
8848 8849 case DL_ATTACH_REQ:
8849 8850 ill_dlpi_done(ill, dloa->dl_correct_primitive);
8850 8851 break;
8851 8852 }
8852 8853 break;
8853 8854 default:
8854 8855 break;
8855 8856 }
8856 8857
8857 8858 freemsg(mp);
8858 8859 if (mp1 == NULL)
8859 8860 return;
8860 8861
8861 8862 /*
8862 8863 * The operation must complete without EINPROGRESS since
8863 8864 * ipsq_pending_mp_get() has removed the mblk (mp1). Otherwise,
8864 8865 * the operation will be stuck forever inside the IPSQ.
8865 8866 */
8866 8867 ASSERT(err != EINPROGRESS);
8867 8868
8868 8869 DTRACE_PROBE4(ipif__ioctl, char *, "ip_rput_dlpi_writer finish",
8869 8870 int, ipsq->ipsq_xop->ipx_current_ioctl, ill_t *, ill,
8870 8871 ipif_t *, NULL);
8871 8872
8872 8873 switch (ipsq->ipsq_xop->ipx_current_ioctl) {
8873 8874 case 0:
8874 8875 ipsq_current_finish(ipsq);
8875 8876 break;
8876 8877
8877 8878 case SIOCSLIFNAME:
8878 8879 case IF_UNITSEL: {
8879 8880 ill_t *ill_other = ILL_OTHER(ill);
8880 8881
8881 8882 /*
8882 8883 * If SIOCSLIFNAME or IF_UNITSEL is about to succeed, and the
8883 8884 * ill has a peer which is in an IPMP group, then place ill
8884 8885 * into the same group. One catch: although ifconfig plumbs
8885 8886 * the appropriate IPMP meta-interface prior to plumbing this
8886 8887 * ill, it is possible for multiple ifconfig applications to
8887 8888 * race (or for another application to adjust plumbing), in
8888 8889 * which case the IPMP meta-interface we need will be missing.
8889 8890 * If so, kick the phyint out of the group.
8890 8891 */
8891 8892 if (err == 0 && ill_other != NULL && IS_UNDER_IPMP(ill_other)) {
8892 8893 ipmp_grp_t *grp = ill->ill_phyint->phyint_grp;
8893 8894 ipmp_illgrp_t *illg;
8894 8895
8895 8896 illg = ill->ill_isv6 ? grp->gr_v6 : grp->gr_v4;
8896 8897 if (illg == NULL)
8897 8898 ipmp_phyint_leave_grp(ill->ill_phyint);
8898 8899 else
8899 8900 ipmp_ill_join_illgrp(ill, illg);
8900 8901 }
8901 8902
8902 8903 if (ipsq->ipsq_xop->ipx_current_ioctl == IF_UNITSEL)
8903 8904 ip_ioctl_finish(q, mp1, err, NO_COPYOUT, ipsq);
8904 8905 else
8905 8906 ip_ioctl_finish(q, mp1, err, COPYOUT, ipsq);
8906 8907 break;
8907 8908 }
8908 8909 case SIOCLIFADDIF:
8909 8910 ip_ioctl_finish(q, mp1, err, COPYOUT, ipsq);
8910 8911 break;
8911 8912
8912 8913 default:
8913 8914 ip_ioctl_finish(q, mp1, err, NO_COPYOUT, ipsq);
8914 8915 break;
8915 8916 }
8916 8917 }
8917 8918
8918 8919 /*
8919 8920 * ip_rput_other is called by ip_rput to handle messages modifying the global
8920 8921 * state in IP. If 'ipsq' is non-NULL, caller is writer on it.
8921 8922 */
8922 8923 /* ARGSUSED */
8923 8924 void
8924 8925 ip_rput_other(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *dummy_arg)
8925 8926 {
8926 8927 ill_t *ill = q->q_ptr;
8927 8928 struct iocblk *iocp;
8928 8929
8929 8930 ip1dbg(("ip_rput_other "));
8930 8931 if (ipsq != NULL) {
8931 8932 ASSERT(IAM_WRITER_IPSQ(ipsq));
8932 8933 ASSERT(ipsq->ipsq_xop ==
8933 8934 ill->ill_phyint->phyint_ipsq->ipsq_xop);
8934 8935 }
8935 8936
8936 8937 switch (mp->b_datap->db_type) {
8937 8938 case M_ERROR:
8938 8939 case M_HANGUP:
8939 8940 /*
8940 8941 * The device has a problem. We force the ILL down. It can
8941 8942 * be brought up again manually using SIOCSIFFLAGS (via
8942 8943 * ifconfig or equivalent).
8943 8944 */
8944 8945 ASSERT(ipsq != NULL);
8945 8946 if (mp->b_rptr < mp->b_wptr)
8946 8947 ill->ill_error = (int)(*mp->b_rptr & 0xFF);
8947 8948 if (ill->ill_error == 0)
8948 8949 ill->ill_error = ENXIO;
8949 8950 if (!ill_down_start(q, mp))
8950 8951 return;
8951 8952 ipif_all_down_tail(ipsq, q, mp, NULL);
8952 8953 break;
8953 8954 case M_IOCNAK: {
8954 8955 iocp = (struct iocblk *)mp->b_rptr;
8955 8956
8956 8957 ASSERT(iocp->ioc_cmd == DL_IOC_HDR_INFO);
8957 8958 /*
8958 8959 * If this was the first attempt, turn off the fastpath
8959 8960 * probing.
8960 8961 */
8961 8962 mutex_enter(&ill->ill_lock);
8962 8963 if (ill->ill_dlpi_fastpath_state == IDS_INPROGRESS) {
8963 8964 ill->ill_dlpi_fastpath_state = IDS_FAILED;
8964 8965 mutex_exit(&ill->ill_lock);
8965 8966 /*
8966 8967 * don't flush the nce_t entries: we use them
8967 8968 * as an index to the ncec itself.
8968 8969 */
8969 8970 ip1dbg(("ip_rput: DLPI fastpath off on interface %s\n",
8970 8971 ill->ill_name));
8971 8972 } else {
8972 8973 mutex_exit(&ill->ill_lock);
8973 8974 }
8974 8975 freemsg(mp);
8975 8976 break;
8976 8977 }
8977 8978 default:
8978 8979 ASSERT(0);
8979 8980 break;
8980 8981 }
8981 8982 }
8982 8983
8983 8984 /*
8984 8985 * Update any source route, record route or timestamp options
8985 8986 * When it fails it has consumed the message and BUMPed the MIB.
8986 8987 */
8987 8988 boolean_t
8988 8989 ip_forward_options(mblk_t *mp, ipha_t *ipha, ill_t *dst_ill,
8989 8990 ip_recv_attr_t *ira)
8990 8991 {
8991 8992 ipoptp_t opts;
8992 8993 uchar_t *opt;
8993 8994 uint8_t optval;
8994 8995 uint8_t optlen;
8995 8996 ipaddr_t dst;
8996 8997 ipaddr_t ifaddr;
8997 8998 uint32_t ts;
8998 8999 timestruc_t now;
8999 9000 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
9000 9001
9001 9002 ip2dbg(("ip_forward_options\n"));
9002 9003 dst = ipha->ipha_dst;
9003 9004 opt = NULL;
9004 9005
9005 9006 for (optval = ipoptp_first(&opts, ipha);
9006 9007 optval != IPOPT_EOL;
9007 9008 optval = ipoptp_next(&opts)) {
9008 9009 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
9009 9010 opt = opts.ipoptp_cur;
9010 9011 optlen = opts.ipoptp_len;
9011 9012 ip2dbg(("ip_forward_options: opt %d, len %d\n",
9012 9013 optval, opts.ipoptp_len));
9013 9014 switch (optval) {
9014 9015 uint32_t off;
9015 9016 case IPOPT_SSRR:
9016 9017 case IPOPT_LSRR:
9017 9018 /* Check if adminstratively disabled */
9018 9019 if (!ipst->ips_ip_forward_src_routed) {
9019 9020 BUMP_MIB(dst_ill->ill_ip_mib,
9020 9021 ipIfStatsForwProhibits);
9021 9022 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED",
9022 9023 mp, dst_ill);
9023 9024 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED,
9024 9025 ira);
9025 9026 return (B_FALSE);
9026 9027 }
9027 9028 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9028 9029 /*
9029 9030 * Must be partial since ip_input_options
9030 9031 * checked for strict.
9031 9032 */
9032 9033 break;
9033 9034 }
9034 9035 off = opt[IPOPT_OFFSET];
9035 9036 off--;
9036 9037 redo_srr:
9037 9038 if (optlen < IP_ADDR_LEN ||
9038 9039 off > optlen - IP_ADDR_LEN) {
9039 9040 /* End of source route */
9040 9041 ip1dbg((
9041 9042 "ip_forward_options: end of SR\n"));
9042 9043 break;
9043 9044 }
9044 9045 /* Pick a reasonable address on the outbound if */
9045 9046 ASSERT(dst_ill != NULL);
9046 9047 if (ip_select_source_v4(dst_ill, INADDR_ANY, dst,
9047 9048 INADDR_ANY, ALL_ZONES, ipst, &ifaddr, NULL,
9048 9049 NULL) != 0) {
9049 9050 /* No source! Shouldn't happen */
9050 9051 ifaddr = INADDR_ANY;
9051 9052 }
9052 9053 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9053 9054 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9054 9055 ip1dbg(("ip_forward_options: next hop 0x%x\n",
9055 9056 ntohl(dst)));
9056 9057
9057 9058 /*
9058 9059 * Check if our address is present more than
9059 9060 * once as consecutive hops in source route.
9060 9061 */
9061 9062 if (ip_type_v4(dst, ipst) == IRE_LOCAL) {
9062 9063 off += IP_ADDR_LEN;
9063 9064 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9064 9065 goto redo_srr;
9065 9066 }
9066 9067 ipha->ipha_dst = dst;
9067 9068 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9068 9069 break;
9069 9070 case IPOPT_RR:
9070 9071 off = opt[IPOPT_OFFSET];
9071 9072 off--;
9072 9073 if (optlen < IP_ADDR_LEN ||
9073 9074 off > optlen - IP_ADDR_LEN) {
9074 9075 /* No more room - ignore */
9075 9076 ip1dbg((
9076 9077 "ip_forward_options: end of RR\n"));
9077 9078 break;
9078 9079 }
9079 9080 /* Pick a reasonable address on the outbound if */
9080 9081 ASSERT(dst_ill != NULL);
9081 9082 if (ip_select_source_v4(dst_ill, INADDR_ANY, dst,
9082 9083 INADDR_ANY, ALL_ZONES, ipst, &ifaddr, NULL,
9083 9084 NULL) != 0) {
9084 9085 /* No source! Shouldn't happen */
9085 9086 ifaddr = INADDR_ANY;
9086 9087 }
9087 9088 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9088 9089 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9089 9090 break;
9090 9091 case IPOPT_TS:
9091 9092 off = 0;
9092 9093 /* Insert timestamp if there is room */
9093 9094 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9094 9095 case IPOPT_TS_TSONLY:
9095 9096 off = IPOPT_TS_TIMELEN;
9096 9097 break;
9097 9098 case IPOPT_TS_PRESPEC:
9098 9099 case IPOPT_TS_PRESPEC_RFC791:
9099 9100 /* Verify that the address matched */
9100 9101 off = opt[IPOPT_OFFSET] - 1;
9101 9102 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9102 9103 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9103 9104 /* Not for us */
9104 9105 break;
9105 9106 }
9106 9107 /* FALLTHROUGH */
9107 9108 case IPOPT_TS_TSANDADDR:
9108 9109 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
9109 9110 break;
9110 9111 default:
9111 9112 /*
9112 9113 * ip_*put_options should have already
9113 9114 * dropped this packet.
9114 9115 */
9115 9116 cmn_err(CE_PANIC, "ip_forward_options: "
9116 9117 "unknown IT - bug in ip_input_options?\n");
9117 9118 }
9118 9119 if (opt[IPOPT_OFFSET] - 1 + off > optlen) {
9119 9120 /* Increase overflow counter */
9120 9121 off = (opt[IPOPT_POS_OV_FLG] >> 4) + 1;
9121 9122 opt[IPOPT_POS_OV_FLG] =
9122 9123 (uint8_t)((opt[IPOPT_POS_OV_FLG] & 0x0F) |
9123 9124 (off << 4));
9124 9125 break;
9125 9126 }
9126 9127 off = opt[IPOPT_OFFSET] - 1;
9127 9128 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9128 9129 case IPOPT_TS_PRESPEC:
9129 9130 case IPOPT_TS_PRESPEC_RFC791:
9130 9131 case IPOPT_TS_TSANDADDR:
9131 9132 /* Pick a reasonable addr on the outbound if */
9132 9133 ASSERT(dst_ill != NULL);
9133 9134 if (ip_select_source_v4(dst_ill, INADDR_ANY,
9134 9135 dst, INADDR_ANY, ALL_ZONES, ipst, &ifaddr,
9135 9136 NULL, NULL) != 0) {
9136 9137 /* No source! Shouldn't happen */
9137 9138 ifaddr = INADDR_ANY;
9138 9139 }
9139 9140 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9140 9141 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9141 9142 /* FALLTHROUGH */
9142 9143 case IPOPT_TS_TSONLY:
9143 9144 off = opt[IPOPT_OFFSET] - 1;
9144 9145 /* Compute # of milliseconds since midnight */
9145 9146 gethrestime(&now);
9146 9147 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
9147 9148 NSEC2MSEC(now.tv_nsec);
9148 9149 bcopy(&ts, (char *)opt + off, IPOPT_TS_TIMELEN);
9149 9150 opt[IPOPT_OFFSET] += IPOPT_TS_TIMELEN;
9150 9151 break;
9151 9152 }
9152 9153 break;
9153 9154 }
9154 9155 }
9155 9156 return (B_TRUE);
9156 9157 }
9157 9158
9158 9159 /*
9159 9160 * Call ill_frag_timeout to do garbage collection. ill_frag_timeout
9160 9161 * returns 'true' if there are still fragments left on the queue, in
9161 9162 * which case we restart the timer.
9162 9163 */
9163 9164 void
9164 9165 ill_frag_timer(void *arg)
9165 9166 {
9166 9167 ill_t *ill = (ill_t *)arg;
9167 9168 boolean_t frag_pending;
9168 9169 ip_stack_t *ipst = ill->ill_ipst;
9169 9170 time_t timeout;
9170 9171
9171 9172 mutex_enter(&ill->ill_lock);
9172 9173 ASSERT(!ill->ill_fragtimer_executing);
9173 9174 if (ill->ill_state_flags & ILL_CONDEMNED) {
9174 9175 ill->ill_frag_timer_id = 0;
9175 9176 mutex_exit(&ill->ill_lock);
9176 9177 return;
9177 9178 }
9178 9179 ill->ill_fragtimer_executing = 1;
9179 9180 mutex_exit(&ill->ill_lock);
9180 9181
9181 9182 timeout = (ill->ill_isv6 ? ipst->ips_ipv6_reassembly_timeout :
9182 9183 ipst->ips_ip_reassembly_timeout);
9183 9184
9184 9185 frag_pending = ill_frag_timeout(ill, timeout);
9185 9186
9186 9187 /*
9187 9188 * Restart the timer, if we have fragments pending or if someone
9188 9189 * wanted us to be scheduled again.
9189 9190 */
9190 9191 mutex_enter(&ill->ill_lock);
9191 9192 ill->ill_fragtimer_executing = 0;
9192 9193 ill->ill_frag_timer_id = 0;
9193 9194 if (frag_pending || ill->ill_fragtimer_needrestart)
9194 9195 ill_frag_timer_start(ill);
9195 9196 mutex_exit(&ill->ill_lock);
9196 9197 }
9197 9198
9198 9199 void
9199 9200 ill_frag_timer_start(ill_t *ill)
9200 9201 {
9201 9202 ip_stack_t *ipst = ill->ill_ipst;
9202 9203 clock_t timeo_ms;
9203 9204
9204 9205 ASSERT(MUTEX_HELD(&ill->ill_lock));
9205 9206
9206 9207 /* If the ill is closing or opening don't proceed */
9207 9208 if (ill->ill_state_flags & ILL_CONDEMNED)
9208 9209 return;
9209 9210
9210 9211 if (ill->ill_fragtimer_executing) {
9211 9212 /*
9212 9213 * ill_frag_timer is currently executing. Just record the
9213 9214 * the fact that we want the timer to be restarted.
9214 9215 * ill_frag_timer will post a timeout before it returns,
9215 9216 * ensuring it will be called again.
9216 9217 */
9217 9218 ill->ill_fragtimer_needrestart = 1;
9218 9219 return;
9219 9220 }
9220 9221
9221 9222 if (ill->ill_frag_timer_id == 0) {
9222 9223 timeo_ms = (ill->ill_isv6 ? ipst->ips_ipv6_reassembly_timeout :
9223 9224 ipst->ips_ip_reassembly_timeout) * SECONDS;
9224 9225
9225 9226 /*
9226 9227 * The timer is neither running nor is the timeout handler
9227 9228 * executing. Post a timeout so that ill_frag_timer will be
9228 9229 * called
9229 9230 */
9230 9231 ill->ill_frag_timer_id = timeout(ill_frag_timer, ill,
9231 9232 MSEC_TO_TICK(timeo_ms >> 1));
9232 9233 ill->ill_fragtimer_needrestart = 0;
9233 9234 }
9234 9235 }
9235 9236
9236 9237 /*
9237 9238 * Update any source route, record route or timestamp options.
9238 9239 * Check that we are at end of strict source route.
9239 9240 * The options have already been checked for sanity in ip_input_options().
9240 9241 */
9241 9242 boolean_t
9242 9243 ip_input_local_options(mblk_t *mp, ipha_t *ipha, ip_recv_attr_t *ira)
9243 9244 {
9244 9245 ipoptp_t opts;
9245 9246 uchar_t *opt;
9246 9247 uint8_t optval;
9247 9248 uint8_t optlen;
9248 9249 ipaddr_t dst;
9249 9250 ipaddr_t ifaddr;
9250 9251 uint32_t ts;
9251 9252 timestruc_t now;
9252 9253 ill_t *ill = ira->ira_ill;
9253 9254 ip_stack_t *ipst = ill->ill_ipst;
9254 9255
9255 9256 ip2dbg(("ip_input_local_options\n"));
9256 9257 opt = NULL;
9257 9258
9258 9259 for (optval = ipoptp_first(&opts, ipha);
9259 9260 optval != IPOPT_EOL;
9260 9261 optval = ipoptp_next(&opts)) {
9261 9262 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
9262 9263 opt = opts.ipoptp_cur;
9263 9264 optlen = opts.ipoptp_len;
9264 9265 ip2dbg(("ip_input_local_options: opt %d, len %d\n",
9265 9266 optval, optlen));
9266 9267 switch (optval) {
9267 9268 uint32_t off;
9268 9269 case IPOPT_SSRR:
9269 9270 case IPOPT_LSRR:
9270 9271 off = opt[IPOPT_OFFSET];
9271 9272 off--;
9272 9273 if (optlen < IP_ADDR_LEN ||
9273 9274 off > optlen - IP_ADDR_LEN) {
9274 9275 /* End of source route */
9275 9276 ip1dbg(("ip_input_local_options: end of SR\n"));
9276 9277 break;
9277 9278 }
9278 9279 /*
9279 9280 * This will only happen if two consecutive entries
9280 9281 * in the source route contains our address or if
9281 9282 * it is a packet with a loose source route which
9282 9283 * reaches us before consuming the whole source route
9283 9284 */
9284 9285 ip1dbg(("ip_input_local_options: not end of SR\n"));
9285 9286 if (optval == IPOPT_SSRR) {
9286 9287 goto bad_src_route;
9287 9288 }
9288 9289 /*
9289 9290 * Hack: instead of dropping the packet truncate the
9290 9291 * source route to what has been used by filling the
9291 9292 * rest with IPOPT_NOP.
9292 9293 */
9293 9294 opt[IPOPT_OLEN] = (uint8_t)off;
9294 9295 while (off < optlen) {
9295 9296 opt[off++] = IPOPT_NOP;
9296 9297 }
9297 9298 break;
9298 9299 case IPOPT_RR:
9299 9300 off = opt[IPOPT_OFFSET];
9300 9301 off--;
9301 9302 if (optlen < IP_ADDR_LEN ||
9302 9303 off > optlen - IP_ADDR_LEN) {
9303 9304 /* No more room - ignore */
9304 9305 ip1dbg((
9305 9306 "ip_input_local_options: end of RR\n"));
9306 9307 break;
9307 9308 }
9308 9309 /* Pick a reasonable address on the outbound if */
9309 9310 if (ip_select_source_v4(ill, INADDR_ANY, ipha->ipha_dst,
9310 9311 INADDR_ANY, ALL_ZONES, ipst, &ifaddr, NULL,
9311 9312 NULL) != 0) {
9312 9313 /* No source! Shouldn't happen */
9313 9314 ifaddr = INADDR_ANY;
9314 9315 }
9315 9316 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9316 9317 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9317 9318 break;
9318 9319 case IPOPT_TS:
9319 9320 off = 0;
9320 9321 /* Insert timestamp if there is romm */
9321 9322 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9322 9323 case IPOPT_TS_TSONLY:
9323 9324 off = IPOPT_TS_TIMELEN;
9324 9325 break;
9325 9326 case IPOPT_TS_PRESPEC:
9326 9327 case IPOPT_TS_PRESPEC_RFC791:
9327 9328 /* Verify that the address matched */
9328 9329 off = opt[IPOPT_OFFSET] - 1;
9329 9330 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9330 9331 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9331 9332 /* Not for us */
9332 9333 break;
9333 9334 }
9334 9335 /* FALLTHROUGH */
9335 9336 case IPOPT_TS_TSANDADDR:
9336 9337 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
9337 9338 break;
9338 9339 default:
9339 9340 /*
9340 9341 * ip_*put_options should have already
9341 9342 * dropped this packet.
9342 9343 */
9343 9344 cmn_err(CE_PANIC, "ip_input_local_options: "
9344 9345 "unknown IT - bug in ip_input_options?\n");
9345 9346 }
9346 9347 if (opt[IPOPT_OFFSET] - 1 + off > optlen) {
9347 9348 /* Increase overflow counter */
9348 9349 off = (opt[IPOPT_POS_OV_FLG] >> 4) + 1;
9349 9350 opt[IPOPT_POS_OV_FLG] =
9350 9351 (uint8_t)((opt[IPOPT_POS_OV_FLG] & 0x0F) |
9351 9352 (off << 4));
9352 9353 break;
9353 9354 }
9354 9355 off = opt[IPOPT_OFFSET] - 1;
9355 9356 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9356 9357 case IPOPT_TS_PRESPEC:
9357 9358 case IPOPT_TS_PRESPEC_RFC791:
9358 9359 case IPOPT_TS_TSANDADDR:
9359 9360 /* Pick a reasonable addr on the outbound if */
9360 9361 if (ip_select_source_v4(ill, INADDR_ANY,
9361 9362 ipha->ipha_dst, INADDR_ANY, ALL_ZONES, ipst,
9362 9363 &ifaddr, NULL, NULL) != 0) {
9363 9364 /* No source! Shouldn't happen */
9364 9365 ifaddr = INADDR_ANY;
9365 9366 }
9366 9367 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9367 9368 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9368 9369 /* FALLTHROUGH */
9369 9370 case IPOPT_TS_TSONLY:
9370 9371 off = opt[IPOPT_OFFSET] - 1;
9371 9372 /* Compute # of milliseconds since midnight */
9372 9373 gethrestime(&now);
9373 9374 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
9374 9375 NSEC2MSEC(now.tv_nsec);
9375 9376 bcopy(&ts, (char *)opt + off, IPOPT_TS_TIMELEN);
9376 9377 opt[IPOPT_OFFSET] += IPOPT_TS_TIMELEN;
9377 9378 break;
9378 9379 }
9379 9380 break;
9380 9381 }
9381 9382 }
9382 9383 return (B_TRUE);
9383 9384
9384 9385 bad_src_route:
9385 9386 /* make sure we clear any indication of a hardware checksum */
9386 9387 DB_CKSUMFLAGS(mp) = 0;
9387 9388 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED", mp, ill);
9388 9389 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED, ira);
9389 9390 return (B_FALSE);
9390 9391
9391 9392 }
9392 9393
9393 9394 /*
9394 9395 * Process IP options in an inbound packet. Always returns the nexthop.
9395 9396 * Normally this is the passed in nexthop, but if there is an option
9396 9397 * that effects the nexthop (such as a source route) that will be returned.
9397 9398 * Sets *errorp if there is an error, in which case an ICMP error has been sent
9398 9399 * and mp freed.
9399 9400 */
9400 9401 ipaddr_t
9401 9402 ip_input_options(ipha_t *ipha, ipaddr_t dst, mblk_t *mp,
9402 9403 ip_recv_attr_t *ira, int *errorp)
9403 9404 {
9404 9405 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
9405 9406 ipoptp_t opts;
9406 9407 uchar_t *opt;
9407 9408 uint8_t optval;
9408 9409 uint8_t optlen;
9409 9410 intptr_t code = 0;
9410 9411 ire_t *ire;
9411 9412
9412 9413 ip2dbg(("ip_input_options\n"));
9413 9414 opt = NULL;
9414 9415 *errorp = 0;
9415 9416 for (optval = ipoptp_first(&opts, ipha);
9416 9417 optval != IPOPT_EOL;
9417 9418 optval = ipoptp_next(&opts)) {
9418 9419 opt = opts.ipoptp_cur;
9419 9420 optlen = opts.ipoptp_len;
9420 9421 ip2dbg(("ip_input_options: opt %d, len %d\n",
9421 9422 optval, optlen));
9422 9423 /*
9423 9424 * Note: we need to verify the checksum before we
9424 9425 * modify anything thus this routine only extracts the next
9425 9426 * hop dst from any source route.
9426 9427 */
9427 9428 switch (optval) {
9428 9429 uint32_t off;
9429 9430 case IPOPT_SSRR:
9430 9431 case IPOPT_LSRR:
9431 9432 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9432 9433 if (optval == IPOPT_SSRR) {
9433 9434 ip1dbg(("ip_input_options: not next"
9434 9435 " strict source route 0x%x\n",
9435 9436 ntohl(dst)));
9436 9437 code = (char *)&ipha->ipha_dst -
9437 9438 (char *)ipha;
9438 9439 goto param_prob; /* RouterReq's */
9439 9440 }
9440 9441 ip2dbg(("ip_input_options: "
9441 9442 "not next source route 0x%x\n",
9442 9443 ntohl(dst)));
9443 9444 break;
9444 9445 }
9445 9446
9446 9447 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
9447 9448 ip1dbg((
9448 9449 "ip_input_options: bad option offset\n"));
9449 9450 code = (char *)&opt[IPOPT_OLEN] -
9450 9451 (char *)ipha;
9451 9452 goto param_prob;
9452 9453 }
9453 9454 off = opt[IPOPT_OFFSET];
9454 9455 off--;
9455 9456 redo_srr:
9456 9457 if (optlen < IP_ADDR_LEN ||
9457 9458 off > optlen - IP_ADDR_LEN) {
9458 9459 /* End of source route */
9459 9460 ip1dbg(("ip_input_options: end of SR\n"));
9460 9461 break;
9461 9462 }
9462 9463 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9463 9464 ip1dbg(("ip_input_options: next hop 0x%x\n",
9464 9465 ntohl(dst)));
9465 9466
9466 9467 /*
9467 9468 * Check if our address is present more than
9468 9469 * once as consecutive hops in source route.
9469 9470 * XXX verify per-interface ip_forwarding
9470 9471 * for source route?
9471 9472 */
9472 9473 if (ip_type_v4(dst, ipst) == IRE_LOCAL) {
9473 9474 off += IP_ADDR_LEN;
9474 9475 goto redo_srr;
9475 9476 }
9476 9477
9477 9478 if (dst == htonl(INADDR_LOOPBACK)) {
9478 9479 ip1dbg(("ip_input_options: loopback addr in "
9479 9480 "source route!\n"));
9480 9481 goto bad_src_route;
9481 9482 }
9482 9483 /*
9483 9484 * For strict: verify that dst is directly
9484 9485 * reachable.
9485 9486 */
9486 9487 if (optval == IPOPT_SSRR) {
9487 9488 ire = ire_ftable_lookup_v4(dst, 0, 0,
9488 9489 IRE_INTERFACE, NULL, ALL_ZONES,
9489 9490 ira->ira_tsl,
9490 9491 MATCH_IRE_TYPE | MATCH_IRE_SECATTR, 0, ipst,
9491 9492 NULL);
9492 9493 if (ire == NULL) {
9493 9494 ip1dbg(("ip_input_options: SSRR not "
9494 9495 "directly reachable: 0x%x\n",
9495 9496 ntohl(dst)));
9496 9497 goto bad_src_route;
9497 9498 }
9498 9499 ire_refrele(ire);
9499 9500 }
9500 9501 /*
9501 9502 * Defer update of the offset and the record route
9502 9503 * until the packet is forwarded.
9503 9504 */
9504 9505 break;
9505 9506 case IPOPT_RR:
9506 9507 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
9507 9508 ip1dbg((
9508 9509 "ip_input_options: bad option offset\n"));
9509 9510 code = (char *)&opt[IPOPT_OLEN] -
9510 9511 (char *)ipha;
9511 9512 goto param_prob;
9512 9513 }
9513 9514 break;
9514 9515 case IPOPT_TS:
9515 9516 /*
9516 9517 * Verify that length >= 5 and that there is either
9517 9518 * room for another timestamp or that the overflow
9518 9519 * counter is not maxed out.
9519 9520 */
9520 9521 code = (char *)&opt[IPOPT_OLEN] - (char *)ipha;
9521 9522 if (optlen < IPOPT_MINLEN_IT) {
9522 9523 goto param_prob;
9523 9524 }
9524 9525 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
9525 9526 ip1dbg((
9526 9527 "ip_input_options: bad option offset\n"));
9527 9528 code = (char *)&opt[IPOPT_OFFSET] -
9528 9529 (char *)ipha;
9529 9530 goto param_prob;
9530 9531 }
9531 9532 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9532 9533 case IPOPT_TS_TSONLY:
9533 9534 off = IPOPT_TS_TIMELEN;
9534 9535 break;
9535 9536 case IPOPT_TS_TSANDADDR:
9536 9537 case IPOPT_TS_PRESPEC:
9537 9538 case IPOPT_TS_PRESPEC_RFC791:
9538 9539 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
9539 9540 break;
9540 9541 default:
9541 9542 code = (char *)&opt[IPOPT_POS_OV_FLG] -
9542 9543 (char *)ipha;
9543 9544 goto param_prob;
9544 9545 }
9545 9546 if (opt[IPOPT_OFFSET] - 1 + off > optlen &&
9546 9547 (opt[IPOPT_POS_OV_FLG] & 0xF0) == 0xF0) {
9547 9548 /*
9548 9549 * No room and the overflow counter is 15
9549 9550 * already.
9550 9551 */
9551 9552 goto param_prob;
9552 9553 }
9553 9554 break;
9554 9555 }
9555 9556 }
9556 9557
9557 9558 if ((opts.ipoptp_flags & IPOPTP_ERROR) == 0) {
9558 9559 return (dst);
9559 9560 }
9560 9561
9561 9562 ip1dbg(("ip_input_options: error processing IP options."));
9562 9563 code = (char *)&opt[IPOPT_OFFSET] - (char *)ipha;
9563 9564
9564 9565 param_prob:
9565 9566 /* make sure we clear any indication of a hardware checksum */
9566 9567 DB_CKSUMFLAGS(mp) = 0;
9567 9568 ip_drop_input("ICMP_PARAM_PROBLEM", mp, ira->ira_ill);
9568 9569 icmp_param_problem(mp, (uint8_t)code, ira);
9569 9570 *errorp = -1;
9570 9571 return (dst);
9571 9572
9572 9573 bad_src_route:
9573 9574 /* make sure we clear any indication of a hardware checksum */
9574 9575 DB_CKSUMFLAGS(mp) = 0;
9575 9576 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED", mp, ira->ira_ill);
9576 9577 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED, ira);
9577 9578 *errorp = -1;
9578 9579 return (dst);
9579 9580 }
9580 9581
9581 9582 /*
9582 9583 * IP & ICMP info in >=14 msg's ...
9583 9584 * - ip fixed part (mib2_ip_t)
9584 9585 * - icmp fixed part (mib2_icmp_t)
9585 9586 * - ipAddrEntryTable (ip 20) all IPv4 ipifs
9586 9587 * - ipRouteEntryTable (ip 21) all IPv4 IREs
9587 9588 * - ipNetToMediaEntryTable (ip 22) all IPv4 Neighbor Cache entries
9588 9589 * - ipRouteAttributeTable (ip 102) labeled routes
9589 9590 * - ip multicast membership (ip_member_t)
9590 9591 * - ip multicast source filtering (ip_grpsrc_t)
9591 9592 * - igmp fixed part (struct igmpstat)
9592 9593 * - multicast routing stats (struct mrtstat)
9593 9594 * - multicast routing vifs (array of struct vifctl)
9594 9595 * - multicast routing routes (array of struct mfcctl)
9595 9596 * - ip6 fixed part (mib2_ipv6IfStatsEntry_t)
9596 9597 * One per ill plus one generic
9597 9598 * - icmp6 fixed part (mib2_ipv6IfIcmpEntry_t)
9598 9599 * One per ill plus one generic
9599 9600 * - ipv6RouteEntry all IPv6 IREs
9600 9601 * - ipv6RouteAttributeTable (ip6 102) labeled routes
9601 9602 * - ipv6NetToMediaEntry all IPv6 Neighbor Cache entries
9602 9603 * - ipv6AddrEntry all IPv6 ipifs
9603 9604 * - ipv6 multicast membership (ipv6_member_t)
9604 9605 * - ipv6 multicast source filtering (ipv6_grpsrc_t)
9605 9606 *
9606 9607 * NOTE: original mpctl is copied for msg's 2..N, since its ctl part is
9607 9608 * already filled in by the caller.
9608 9609 * If legacy_req is true then MIB structures needs to be truncated to their
9609 9610 * legacy sizes before being returned.
9610 9611 * Return value of 0 indicates that no messages were sent and caller
9611 9612 * should free mpctl.
9612 9613 */
9613 9614 int
9614 9615 ip_snmp_get(queue_t *q, mblk_t *mpctl, int level, boolean_t legacy_req)
9615 9616 {
9616 9617 ip_stack_t *ipst;
9617 9618 sctp_stack_t *sctps;
9618 9619
9619 9620 if (q->q_next != NULL) {
9620 9621 ipst = ILLQ_TO_IPST(q);
9621 9622 } else {
9622 9623 ipst = CONNQ_TO_IPST(q);
9623 9624 }
9624 9625 ASSERT(ipst != NULL);
9625 9626 sctps = ipst->ips_netstack->netstack_sctp;
9626 9627
9627 9628 if (mpctl == NULL || mpctl->b_cont == NULL) {
9628 9629 return (0);
9629 9630 }
9630 9631
9631 9632 /*
9632 9633 * For the purposes of the (broken) packet shell use
9633 9634 * of the level we make sure MIB2_TCP/MIB2_UDP can be used
9634 9635 * to make TCP and UDP appear first in the list of mib items.
9635 9636 * TBD: We could expand this and use it in netstat so that
9636 9637 * the kernel doesn't have to produce large tables (connections,
9637 9638 * routes, etc) when netstat only wants the statistics or a particular
9638 9639 * table.
9639 9640 */
9640 9641 if (!(level == MIB2_TCP || level == MIB2_UDP)) {
9641 9642 if ((mpctl = icmp_snmp_get(q, mpctl)) == NULL) {
9642 9643 return (1);
9643 9644 }
9644 9645 }
9645 9646
9646 9647 if (level != MIB2_TCP) {
9647 9648 if ((mpctl = udp_snmp_get(q, mpctl, legacy_req)) == NULL) {
9648 9649 return (1);
9649 9650 }
9650 9651 if (level == MIB2_UDP) {
9651 9652 goto done;
9652 9653 }
9653 9654 }
9654 9655
9655 9656 if (level != MIB2_UDP) {
9656 9657 if ((mpctl = tcp_snmp_get(q, mpctl, legacy_req)) == NULL) {
9657 9658 return (1);
9658 9659 }
9659 9660 if (level == MIB2_TCP) {
9660 9661 goto done;
9661 9662 }
9662 9663 }
9663 9664
9664 9665 if ((mpctl = ip_snmp_get_mib2_ip_traffic_stats(q, mpctl,
9665 9666 ipst, legacy_req)) == NULL) {
9666 9667 return (1);
9667 9668 }
9668 9669
9669 9670 if ((mpctl = ip_snmp_get_mib2_ip6(q, mpctl, ipst,
9670 9671 legacy_req)) == NULL) {
9671 9672 return (1);
9672 9673 }
9673 9674
9674 9675 if ((mpctl = ip_snmp_get_mib2_icmp(q, mpctl, ipst)) == NULL) {
9675 9676 return (1);
9676 9677 }
9677 9678
9678 9679 if ((mpctl = ip_snmp_get_mib2_icmp6(q, mpctl, ipst)) == NULL) {
9679 9680 return (1);
9680 9681 }
9681 9682
9682 9683 if ((mpctl = ip_snmp_get_mib2_igmp(q, mpctl, ipst)) == NULL) {
9683 9684 return (1);
9684 9685 }
9685 9686
9686 9687 if ((mpctl = ip_snmp_get_mib2_multi(q, mpctl, ipst)) == NULL) {
9687 9688 return (1);
9688 9689 }
9689 9690
9690 9691 if ((mpctl = ip_snmp_get_mib2_ip_addr(q, mpctl, ipst,
9691 9692 legacy_req)) == NULL) {
9692 9693 return (1);
9693 9694 }
9694 9695
9695 9696 if ((mpctl = ip_snmp_get_mib2_ip6_addr(q, mpctl, ipst,
9696 9697 legacy_req)) == NULL) {
9697 9698 return (1);
9698 9699 }
9699 9700
9700 9701 if ((mpctl = ip_snmp_get_mib2_ip_group_mem(q, mpctl, ipst)) == NULL) {
9701 9702 return (1);
9702 9703 }
9703 9704
9704 9705 if ((mpctl = ip_snmp_get_mib2_ip6_group_mem(q, mpctl, ipst)) == NULL) {
9705 9706 return (1);
9706 9707 }
9707 9708
9708 9709 if ((mpctl = ip_snmp_get_mib2_ip_group_src(q, mpctl, ipst)) == NULL) {
9709 9710 return (1);
9710 9711 }
9711 9712
9712 9713 if ((mpctl = ip_snmp_get_mib2_ip6_group_src(q, mpctl, ipst)) == NULL) {
9713 9714 return (1);
9714 9715 }
9715 9716
9716 9717 if ((mpctl = ip_snmp_get_mib2_virt_multi(q, mpctl, ipst)) == NULL) {
9717 9718 return (1);
9718 9719 }
9719 9720
9720 9721 if ((mpctl = ip_snmp_get_mib2_multi_rtable(q, mpctl, ipst)) == NULL) {
9721 9722 return (1);
9722 9723 }
9723 9724
9724 9725 mpctl = ip_snmp_get_mib2_ip_route_media(q, mpctl, level, ipst);
9725 9726 if (mpctl == NULL)
9726 9727 return (1);
9727 9728
9728 9729 mpctl = ip_snmp_get_mib2_ip6_route_media(q, mpctl, level, ipst);
9729 9730 if (mpctl == NULL)
9730 9731 return (1);
9731 9732
9732 9733 if ((mpctl = sctp_snmp_get_mib2(q, mpctl, sctps)) == NULL) {
9733 9734 return (1);
9734 9735 }
9735 9736 if ((mpctl = ip_snmp_get_mib2_ip_dce(q, mpctl, ipst)) == NULL) {
9736 9737 return (1);
9737 9738 }
9738 9739 done:
9739 9740 freemsg(mpctl);
9740 9741 return (1);
9741 9742 }
9742 9743
9743 9744 /* Get global (legacy) IPv4 statistics */
9744 9745 static mblk_t *
9745 9746 ip_snmp_get_mib2_ip(queue_t *q, mblk_t *mpctl, mib2_ipIfStatsEntry_t *ipmib,
9746 9747 ip_stack_t *ipst, boolean_t legacy_req)
9747 9748 {
9748 9749 mib2_ip_t old_ip_mib;
9749 9750 struct opthdr *optp;
9750 9751 mblk_t *mp2ctl;
9751 9752 mib2_ipAddrEntry_t mae;
9752 9753
9753 9754 /*
9754 9755 * make a copy of the original message
9755 9756 */
9756 9757 mp2ctl = copymsg(mpctl);
9757 9758
9758 9759 /* fixed length IP structure... */
9759 9760 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9760 9761 optp->level = MIB2_IP;
9761 9762 optp->name = 0;
9762 9763 SET_MIB(old_ip_mib.ipForwarding,
9763 9764 (WE_ARE_FORWARDING(ipst) ? 1 : 2));
9764 9765 SET_MIB(old_ip_mib.ipDefaultTTL,
9765 9766 (uint32_t)ipst->ips_ip_def_ttl);
9766 9767 SET_MIB(old_ip_mib.ipReasmTimeout,
9767 9768 ipst->ips_ip_reassembly_timeout);
9768 9769 SET_MIB(old_ip_mib.ipAddrEntrySize,
9769 9770 (legacy_req) ? LEGACY_MIB_SIZE(&mae, mib2_ipAddrEntry_t) :
9770 9771 sizeof (mib2_ipAddrEntry_t));
9771 9772 SET_MIB(old_ip_mib.ipRouteEntrySize,
9772 9773 sizeof (mib2_ipRouteEntry_t));
9773 9774 SET_MIB(old_ip_mib.ipNetToMediaEntrySize,
9774 9775 sizeof (mib2_ipNetToMediaEntry_t));
9775 9776 SET_MIB(old_ip_mib.ipMemberEntrySize, sizeof (ip_member_t));
9776 9777 SET_MIB(old_ip_mib.ipGroupSourceEntrySize, sizeof (ip_grpsrc_t));
9777 9778 SET_MIB(old_ip_mib.ipRouteAttributeSize,
9778 9779 sizeof (mib2_ipAttributeEntry_t));
9779 9780 SET_MIB(old_ip_mib.transportMLPSize, sizeof (mib2_transportMLPEntry_t));
9780 9781 SET_MIB(old_ip_mib.ipDestEntrySize, sizeof (dest_cache_entry_t));
9781 9782
9782 9783 /*
9783 9784 * Grab the statistics from the new IP MIB
9784 9785 */
9785 9786 SET_MIB(old_ip_mib.ipInReceives,
9786 9787 (uint32_t)ipmib->ipIfStatsHCInReceives);
9787 9788 SET_MIB(old_ip_mib.ipInHdrErrors, ipmib->ipIfStatsInHdrErrors);
9788 9789 SET_MIB(old_ip_mib.ipInAddrErrors, ipmib->ipIfStatsInAddrErrors);
9789 9790 SET_MIB(old_ip_mib.ipForwDatagrams,
9790 9791 (uint32_t)ipmib->ipIfStatsHCOutForwDatagrams);
9791 9792 SET_MIB(old_ip_mib.ipInUnknownProtos,
9792 9793 ipmib->ipIfStatsInUnknownProtos);
9793 9794 SET_MIB(old_ip_mib.ipInDiscards, ipmib->ipIfStatsInDiscards);
9794 9795 SET_MIB(old_ip_mib.ipInDelivers,
9795 9796 (uint32_t)ipmib->ipIfStatsHCInDelivers);
9796 9797 SET_MIB(old_ip_mib.ipOutRequests,
9797 9798 (uint32_t)ipmib->ipIfStatsHCOutRequests);
9798 9799 SET_MIB(old_ip_mib.ipOutDiscards, ipmib->ipIfStatsOutDiscards);
9799 9800 SET_MIB(old_ip_mib.ipOutNoRoutes, ipmib->ipIfStatsOutNoRoutes);
9800 9801 SET_MIB(old_ip_mib.ipReasmReqds, ipmib->ipIfStatsReasmReqds);
9801 9802 SET_MIB(old_ip_mib.ipReasmOKs, ipmib->ipIfStatsReasmOKs);
9802 9803 SET_MIB(old_ip_mib.ipReasmFails, ipmib->ipIfStatsReasmFails);
9803 9804 SET_MIB(old_ip_mib.ipFragOKs, ipmib->ipIfStatsOutFragOKs);
9804 9805 SET_MIB(old_ip_mib.ipFragFails, ipmib->ipIfStatsOutFragFails);
9805 9806 SET_MIB(old_ip_mib.ipFragCreates, ipmib->ipIfStatsOutFragCreates);
9806 9807
9807 9808 /* ipRoutingDiscards is not being used */
9808 9809 SET_MIB(old_ip_mib.ipRoutingDiscards, 0);
9809 9810 SET_MIB(old_ip_mib.tcpInErrs, ipmib->tcpIfStatsInErrs);
9810 9811 SET_MIB(old_ip_mib.udpNoPorts, ipmib->udpIfStatsNoPorts);
9811 9812 SET_MIB(old_ip_mib.ipInCksumErrs, ipmib->ipIfStatsInCksumErrs);
9812 9813 SET_MIB(old_ip_mib.ipReasmDuplicates,
9813 9814 ipmib->ipIfStatsReasmDuplicates);
9814 9815 SET_MIB(old_ip_mib.ipReasmPartDups, ipmib->ipIfStatsReasmPartDups);
9815 9816 SET_MIB(old_ip_mib.ipForwProhibits, ipmib->ipIfStatsForwProhibits);
9816 9817 SET_MIB(old_ip_mib.udpInCksumErrs, ipmib->udpIfStatsInCksumErrs);
9817 9818 SET_MIB(old_ip_mib.udpInOverflows, ipmib->udpIfStatsInOverflows);
9818 9819 SET_MIB(old_ip_mib.rawipInOverflows,
9819 9820 ipmib->rawipIfStatsInOverflows);
9820 9821
9821 9822 SET_MIB(old_ip_mib.ipsecInSucceeded, ipmib->ipsecIfStatsInSucceeded);
9822 9823 SET_MIB(old_ip_mib.ipsecInFailed, ipmib->ipsecIfStatsInFailed);
9823 9824 SET_MIB(old_ip_mib.ipInIPv6, ipmib->ipIfStatsInWrongIPVersion);
9824 9825 SET_MIB(old_ip_mib.ipOutIPv6, ipmib->ipIfStatsOutWrongIPVersion);
9825 9826 SET_MIB(old_ip_mib.ipOutSwitchIPv6,
9826 9827 ipmib->ipIfStatsOutSwitchIPVersion);
9827 9828
9828 9829 if (!snmp_append_data(mpctl->b_cont, (char *)&old_ip_mib,
9829 9830 (int)sizeof (old_ip_mib))) {
9830 9831 ip1dbg(("ip_snmp_get_mib2_ip: failed to allocate %u bytes\n",
9831 9832 (uint_t)sizeof (old_ip_mib)));
9832 9833 }
9833 9834
9834 9835 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9835 9836 ip3dbg(("ip_snmp_get_mib2_ip: level %d, name %d, len %d\n",
9836 9837 (int)optp->level, (int)optp->name, (int)optp->len));
9837 9838 qreply(q, mpctl);
9838 9839 return (mp2ctl);
9839 9840 }
9840 9841
9841 9842 /* Per interface IPv4 statistics */
9842 9843 static mblk_t *
9843 9844 ip_snmp_get_mib2_ip_traffic_stats(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
9844 9845 boolean_t legacy_req)
9845 9846 {
9846 9847 struct opthdr *optp;
9847 9848 mblk_t *mp2ctl;
9848 9849 ill_t *ill;
9849 9850 ill_walk_context_t ctx;
9850 9851 mblk_t *mp_tail = NULL;
9851 9852 mib2_ipIfStatsEntry_t global_ip_mib;
9852 9853 mib2_ipAddrEntry_t mae;
9853 9854
9854 9855 /*
9855 9856 * Make a copy of the original message
9856 9857 */
9857 9858 mp2ctl = copymsg(mpctl);
9858 9859
9859 9860 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9860 9861 optp->level = MIB2_IP;
9861 9862 optp->name = MIB2_IP_TRAFFIC_STATS;
9862 9863 /* Include "unknown interface" ip_mib */
9863 9864 ipst->ips_ip_mib.ipIfStatsIPVersion = MIB2_INETADDRESSTYPE_ipv4;
9864 9865 ipst->ips_ip_mib.ipIfStatsIfIndex =
9865 9866 MIB2_UNKNOWN_INTERFACE; /* Flag to netstat */
9866 9867 SET_MIB(ipst->ips_ip_mib.ipIfStatsForwarding,
9867 9868 (ipst->ips_ip_forwarding ? 1 : 2));
9868 9869 SET_MIB(ipst->ips_ip_mib.ipIfStatsDefaultTTL,
9869 9870 (uint32_t)ipst->ips_ip_def_ttl);
9870 9871 SET_MIB(ipst->ips_ip_mib.ipIfStatsEntrySize,
9871 9872 sizeof (mib2_ipIfStatsEntry_t));
9872 9873 SET_MIB(ipst->ips_ip_mib.ipIfStatsAddrEntrySize,
9873 9874 sizeof (mib2_ipAddrEntry_t));
9874 9875 SET_MIB(ipst->ips_ip_mib.ipIfStatsRouteEntrySize,
9875 9876 sizeof (mib2_ipRouteEntry_t));
9876 9877 SET_MIB(ipst->ips_ip_mib.ipIfStatsNetToMediaEntrySize,
9877 9878 sizeof (mib2_ipNetToMediaEntry_t));
9878 9879 SET_MIB(ipst->ips_ip_mib.ipIfStatsMemberEntrySize,
9879 9880 sizeof (ip_member_t));
9880 9881 SET_MIB(ipst->ips_ip_mib.ipIfStatsGroupSourceEntrySize,
9881 9882 sizeof (ip_grpsrc_t));
9882 9883
9883 9884 bcopy(&ipst->ips_ip_mib, &global_ip_mib, sizeof (global_ip_mib));
9884 9885
9885 9886 if (legacy_req) {
9886 9887 SET_MIB(global_ip_mib.ipIfStatsAddrEntrySize,
9887 9888 LEGACY_MIB_SIZE(&mae, mib2_ipAddrEntry_t));
9888 9889 }
9889 9890
9890 9891 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
9891 9892 (char *)&global_ip_mib, (int)sizeof (global_ip_mib))) {
9892 9893 ip1dbg(("ip_snmp_get_mib2_ip_traffic_stats: "
9893 9894 "failed to allocate %u bytes\n",
9894 9895 (uint_t)sizeof (global_ip_mib)));
9895 9896 }
9896 9897
9897 9898 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
9898 9899 ill = ILL_START_WALK_V4(&ctx, ipst);
9899 9900 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
9900 9901 ill->ill_ip_mib->ipIfStatsIfIndex =
9901 9902 ill->ill_phyint->phyint_ifindex;
9902 9903 SET_MIB(ill->ill_ip_mib->ipIfStatsForwarding,
9903 9904 (ipst->ips_ip_forwarding ? 1 : 2));
9904 9905 SET_MIB(ill->ill_ip_mib->ipIfStatsDefaultTTL,
9905 9906 (uint32_t)ipst->ips_ip_def_ttl);
9906 9907
9907 9908 ip_mib2_add_ip_stats(&global_ip_mib, ill->ill_ip_mib);
9908 9909 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
9909 9910 (char *)ill->ill_ip_mib,
9910 9911 (int)sizeof (*ill->ill_ip_mib))) {
9911 9912 ip1dbg(("ip_snmp_get_mib2_ip_traffic_stats: "
9912 9913 "failed to allocate %u bytes\n",
9913 9914 (uint_t)sizeof (*ill->ill_ip_mib)));
9914 9915 }
9915 9916 }
9916 9917 rw_exit(&ipst->ips_ill_g_lock);
9917 9918
9918 9919 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9919 9920 ip3dbg(("ip_snmp_get_mib2_ip_traffic_stats: "
9920 9921 "level %d, name %d, len %d\n",
9921 9922 (int)optp->level, (int)optp->name, (int)optp->len));
9922 9923 qreply(q, mpctl);
9923 9924
9924 9925 if (mp2ctl == NULL)
9925 9926 return (NULL);
9926 9927
9927 9928 return (ip_snmp_get_mib2_ip(q, mp2ctl, &global_ip_mib, ipst,
9928 9929 legacy_req));
9929 9930 }
9930 9931
9931 9932 /* Global IPv4 ICMP statistics */
9932 9933 static mblk_t *
9933 9934 ip_snmp_get_mib2_icmp(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
9934 9935 {
9935 9936 struct opthdr *optp;
9936 9937 mblk_t *mp2ctl;
9937 9938
9938 9939 /*
9939 9940 * Make a copy of the original message
9940 9941 */
9941 9942 mp2ctl = copymsg(mpctl);
9942 9943
9943 9944 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9944 9945 optp->level = MIB2_ICMP;
9945 9946 optp->name = 0;
9946 9947 if (!snmp_append_data(mpctl->b_cont, (char *)&ipst->ips_icmp_mib,
9947 9948 (int)sizeof (ipst->ips_icmp_mib))) {
9948 9949 ip1dbg(("ip_snmp_get_mib2_icmp: failed to allocate %u bytes\n",
9949 9950 (uint_t)sizeof (ipst->ips_icmp_mib)));
9950 9951 }
9951 9952 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9952 9953 ip3dbg(("ip_snmp_get_mib2_icmp: level %d, name %d, len %d\n",
9953 9954 (int)optp->level, (int)optp->name, (int)optp->len));
9954 9955 qreply(q, mpctl);
9955 9956 return (mp2ctl);
9956 9957 }
9957 9958
9958 9959 /* Global IPv4 IGMP statistics */
9959 9960 static mblk_t *
9960 9961 ip_snmp_get_mib2_igmp(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
9961 9962 {
9962 9963 struct opthdr *optp;
9963 9964 mblk_t *mp2ctl;
9964 9965
9965 9966 /*
9966 9967 * make a copy of the original message
9967 9968 */
9968 9969 mp2ctl = copymsg(mpctl);
9969 9970
9970 9971 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9971 9972 optp->level = EXPER_IGMP;
9972 9973 optp->name = 0;
9973 9974 if (!snmp_append_data(mpctl->b_cont, (char *)&ipst->ips_igmpstat,
9974 9975 (int)sizeof (ipst->ips_igmpstat))) {
9975 9976 ip1dbg(("ip_snmp_get_mib2_igmp: failed to allocate %u bytes\n",
9976 9977 (uint_t)sizeof (ipst->ips_igmpstat)));
9977 9978 }
9978 9979 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9979 9980 ip3dbg(("ip_snmp_get_mib2_igmp: level %d, name %d, len %d\n",
9980 9981 (int)optp->level, (int)optp->name, (int)optp->len));
9981 9982 qreply(q, mpctl);
9982 9983 return (mp2ctl);
9983 9984 }
9984 9985
9985 9986 /* Global IPv4 Multicast Routing statistics */
9986 9987 static mblk_t *
9987 9988 ip_snmp_get_mib2_multi(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
9988 9989 {
9989 9990 struct opthdr *optp;
9990 9991 mblk_t *mp2ctl;
9991 9992
9992 9993 /*
9993 9994 * make a copy of the original message
9994 9995 */
9995 9996 mp2ctl = copymsg(mpctl);
9996 9997
9997 9998 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9998 9999 optp->level = EXPER_DVMRP;
9999 10000 optp->name = 0;
10000 10001 if (!ip_mroute_stats(mpctl->b_cont, ipst)) {
10001 10002 ip0dbg(("ip_mroute_stats: failed\n"));
10002 10003 }
10003 10004 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10004 10005 ip3dbg(("ip_snmp_get_mib2_multi: level %d, name %d, len %d\n",
10005 10006 (int)optp->level, (int)optp->name, (int)optp->len));
10006 10007 qreply(q, mpctl);
10007 10008 return (mp2ctl);
10008 10009 }
10009 10010
10010 10011 /* IPv4 address information */
10011 10012 static mblk_t *
10012 10013 ip_snmp_get_mib2_ip_addr(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
10013 10014 boolean_t legacy_req)
10014 10015 {
10015 10016 struct opthdr *optp;
10016 10017 mblk_t *mp2ctl;
10017 10018 mblk_t *mp_tail = NULL;
10018 10019 ill_t *ill;
10019 10020 ipif_t *ipif;
10020 10021 uint_t bitval;
10021 10022 mib2_ipAddrEntry_t mae;
10022 10023 size_t mae_size;
10023 10024 zoneid_t zoneid;
10024 10025 ill_walk_context_t ctx;
10025 10026
10026 10027 /*
10027 10028 * make a copy of the original message
10028 10029 */
10029 10030 mp2ctl = copymsg(mpctl);
10030 10031
10031 10032 mae_size = (legacy_req) ? LEGACY_MIB_SIZE(&mae, mib2_ipAddrEntry_t) :
10032 10033 sizeof (mib2_ipAddrEntry_t);
10033 10034
10034 10035 /* ipAddrEntryTable */
10035 10036
10036 10037 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10037 10038 optp->level = MIB2_IP;
10038 10039 optp->name = MIB2_IP_ADDR;
10039 10040 zoneid = Q_TO_CONN(q)->conn_zoneid;
10040 10041
10041 10042 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10042 10043 ill = ILL_START_WALK_V4(&ctx, ipst);
10043 10044 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10044 10045 for (ipif = ill->ill_ipif; ipif != NULL;
10045 10046 ipif = ipif->ipif_next) {
10046 10047 if (ipif->ipif_zoneid != zoneid &&
10047 10048 ipif->ipif_zoneid != ALL_ZONES)
10048 10049 continue;
10049 10050 /* Sum of count from dead IRE_LO* and our current */
10050 10051 mae.ipAdEntInfo.ae_ibcnt = ipif->ipif_ib_pkt_count;
10051 10052 if (ipif->ipif_ire_local != NULL) {
10052 10053 mae.ipAdEntInfo.ae_ibcnt +=
10053 10054 ipif->ipif_ire_local->ire_ib_pkt_count;
10054 10055 }
10055 10056 mae.ipAdEntInfo.ae_obcnt = 0;
10056 10057 mae.ipAdEntInfo.ae_focnt = 0;
10057 10058
10058 10059 ipif_get_name(ipif, mae.ipAdEntIfIndex.o_bytes,
10059 10060 OCTET_LENGTH);
10060 10061 mae.ipAdEntIfIndex.o_length =
10061 10062 mi_strlen(mae.ipAdEntIfIndex.o_bytes);
10062 10063 mae.ipAdEntAddr = ipif->ipif_lcl_addr;
10063 10064 mae.ipAdEntNetMask = ipif->ipif_net_mask;
10064 10065 mae.ipAdEntInfo.ae_subnet = ipif->ipif_subnet;
10065 10066 mae.ipAdEntInfo.ae_subnet_len =
10066 10067 ip_mask_to_plen(ipif->ipif_net_mask);
10067 10068 mae.ipAdEntInfo.ae_src_addr = ipif->ipif_lcl_addr;
10068 10069 for (bitval = 1;
10069 10070 bitval &&
10070 10071 !(bitval & ipif->ipif_brd_addr);
10071 10072 bitval <<= 1)
10072 10073 noop;
10073 10074 mae.ipAdEntBcastAddr = bitval;
10074 10075 mae.ipAdEntReasmMaxSize = IP_MAXPACKET;
10075 10076 mae.ipAdEntInfo.ae_mtu = ipif->ipif_ill->ill_mtu;
10076 10077 mae.ipAdEntInfo.ae_metric = ipif->ipif_ill->ill_metric;
10077 10078 mae.ipAdEntInfo.ae_broadcast_addr =
10078 10079 ipif->ipif_brd_addr;
10079 10080 mae.ipAdEntInfo.ae_pp_dst_addr =
10080 10081 ipif->ipif_pp_dst_addr;
10081 10082 mae.ipAdEntInfo.ae_flags = ipif->ipif_flags |
10082 10083 ill->ill_flags | ill->ill_phyint->phyint_flags;
10083 10084 mae.ipAdEntRetransmitTime =
10084 10085 ill->ill_reachable_retrans_time;
10085 10086
10086 10087 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10087 10088 (char *)&mae, (int)mae_size)) {
10088 10089 ip1dbg(("ip_snmp_get_mib2_ip_addr: failed to "
10089 10090 "allocate %u bytes\n", (uint_t)mae_size));
10090 10091 }
10091 10092 }
10092 10093 }
10093 10094 rw_exit(&ipst->ips_ill_g_lock);
10094 10095
10095 10096 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10096 10097 ip3dbg(("ip_snmp_get_mib2_ip_addr: level %d, name %d, len %d\n",
10097 10098 (int)optp->level, (int)optp->name, (int)optp->len));
10098 10099 qreply(q, mpctl);
10099 10100 return (mp2ctl);
10100 10101 }
10101 10102
10102 10103 /* IPv6 address information */
10103 10104 static mblk_t *
10104 10105 ip_snmp_get_mib2_ip6_addr(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
10105 10106 boolean_t legacy_req)
10106 10107 {
10107 10108 struct opthdr *optp;
10108 10109 mblk_t *mp2ctl;
10109 10110 mblk_t *mp_tail = NULL;
10110 10111 ill_t *ill;
10111 10112 ipif_t *ipif;
10112 10113 mib2_ipv6AddrEntry_t mae6;
10113 10114 size_t mae6_size;
10114 10115 zoneid_t zoneid;
10115 10116 ill_walk_context_t ctx;
10116 10117
10117 10118 /*
10118 10119 * make a copy of the original message
10119 10120 */
10120 10121 mp2ctl = copymsg(mpctl);
10121 10122
10122 10123 mae6_size = (legacy_req) ?
10123 10124 LEGACY_MIB_SIZE(&mae6, mib2_ipv6AddrEntry_t) :
10124 10125 sizeof (mib2_ipv6AddrEntry_t);
10125 10126
10126 10127 /* ipv6AddrEntryTable */
10127 10128
10128 10129 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10129 10130 optp->level = MIB2_IP6;
10130 10131 optp->name = MIB2_IP6_ADDR;
10131 10132 zoneid = Q_TO_CONN(q)->conn_zoneid;
10132 10133
10133 10134 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10134 10135 ill = ILL_START_WALK_V6(&ctx, ipst);
10135 10136 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10136 10137 for (ipif = ill->ill_ipif; ipif != NULL;
10137 10138 ipif = ipif->ipif_next) {
10138 10139 if (ipif->ipif_zoneid != zoneid &&
10139 10140 ipif->ipif_zoneid != ALL_ZONES)
10140 10141 continue;
10141 10142 /* Sum of count from dead IRE_LO* and our current */
10142 10143 mae6.ipv6AddrInfo.ae_ibcnt = ipif->ipif_ib_pkt_count;
10143 10144 if (ipif->ipif_ire_local != NULL) {
10144 10145 mae6.ipv6AddrInfo.ae_ibcnt +=
10145 10146 ipif->ipif_ire_local->ire_ib_pkt_count;
10146 10147 }
10147 10148 mae6.ipv6AddrInfo.ae_obcnt = 0;
10148 10149 mae6.ipv6AddrInfo.ae_focnt = 0;
10149 10150
10150 10151 ipif_get_name(ipif, mae6.ipv6AddrIfIndex.o_bytes,
10151 10152 OCTET_LENGTH);
10152 10153 mae6.ipv6AddrIfIndex.o_length =
10153 10154 mi_strlen(mae6.ipv6AddrIfIndex.o_bytes);
10154 10155 mae6.ipv6AddrAddress = ipif->ipif_v6lcl_addr;
10155 10156 mae6.ipv6AddrPfxLength =
10156 10157 ip_mask_to_plen_v6(&ipif->ipif_v6net_mask);
10157 10158 mae6.ipv6AddrInfo.ae_subnet = ipif->ipif_v6subnet;
10158 10159 mae6.ipv6AddrInfo.ae_subnet_len =
10159 10160 mae6.ipv6AddrPfxLength;
10160 10161 mae6.ipv6AddrInfo.ae_src_addr = ipif->ipif_v6lcl_addr;
10161 10162
10162 10163 /* Type: stateless(1), stateful(2), unknown(3) */
10163 10164 if (ipif->ipif_flags & IPIF_ADDRCONF)
10164 10165 mae6.ipv6AddrType = 1;
10165 10166 else
10166 10167 mae6.ipv6AddrType = 2;
10167 10168 /* Anycast: true(1), false(2) */
10168 10169 if (ipif->ipif_flags & IPIF_ANYCAST)
10169 10170 mae6.ipv6AddrAnycastFlag = 1;
10170 10171 else
10171 10172 mae6.ipv6AddrAnycastFlag = 2;
10172 10173
10173 10174 /*
10174 10175 * Address status: preferred(1), deprecated(2),
10175 10176 * invalid(3), inaccessible(4), unknown(5)
10176 10177 */
10177 10178 if (ipif->ipif_flags & IPIF_NOLOCAL)
10178 10179 mae6.ipv6AddrStatus = 3;
10179 10180 else if (ipif->ipif_flags & IPIF_DEPRECATED)
10180 10181 mae6.ipv6AddrStatus = 2;
10181 10182 else
10182 10183 mae6.ipv6AddrStatus = 1;
10183 10184 mae6.ipv6AddrInfo.ae_mtu = ipif->ipif_ill->ill_mtu;
10184 10185 mae6.ipv6AddrInfo.ae_metric =
10185 10186 ipif->ipif_ill->ill_metric;
10186 10187 mae6.ipv6AddrInfo.ae_pp_dst_addr =
10187 10188 ipif->ipif_v6pp_dst_addr;
10188 10189 mae6.ipv6AddrInfo.ae_flags = ipif->ipif_flags |
10189 10190 ill->ill_flags | ill->ill_phyint->phyint_flags;
10190 10191 mae6.ipv6AddrReasmMaxSize = IP_MAXPACKET;
10191 10192 mae6.ipv6AddrIdentifier = ill->ill_token;
10192 10193 mae6.ipv6AddrIdentifierLen = ill->ill_token_length;
10193 10194 mae6.ipv6AddrReachableTime = ill->ill_reachable_time;
10194 10195 mae6.ipv6AddrRetransmitTime =
10195 10196 ill->ill_reachable_retrans_time;
10196 10197 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10197 10198 (char *)&mae6, (int)mae6_size)) {
10198 10199 ip1dbg(("ip_snmp_get_mib2_ip6_addr: failed to "
10199 10200 "allocate %u bytes\n",
10200 10201 (uint_t)mae6_size));
10201 10202 }
10202 10203 }
10203 10204 }
10204 10205 rw_exit(&ipst->ips_ill_g_lock);
10205 10206
10206 10207 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10207 10208 ip3dbg(("ip_snmp_get_mib2_ip6_addr: level %d, name %d, len %d\n",
10208 10209 (int)optp->level, (int)optp->name, (int)optp->len));
10209 10210 qreply(q, mpctl);
10210 10211 return (mp2ctl);
10211 10212 }
10212 10213
10213 10214 /* IPv4 multicast group membership. */
10214 10215 static mblk_t *
10215 10216 ip_snmp_get_mib2_ip_group_mem(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10216 10217 {
10217 10218 struct opthdr *optp;
10218 10219 mblk_t *mp2ctl;
10219 10220 ill_t *ill;
10220 10221 ipif_t *ipif;
10221 10222 ilm_t *ilm;
10222 10223 ip_member_t ipm;
10223 10224 mblk_t *mp_tail = NULL;
10224 10225 ill_walk_context_t ctx;
10225 10226 zoneid_t zoneid;
10226 10227
10227 10228 /*
10228 10229 * make a copy of the original message
10229 10230 */
10230 10231 mp2ctl = copymsg(mpctl);
10231 10232 zoneid = Q_TO_CONN(q)->conn_zoneid;
10232 10233
10233 10234 /* ipGroupMember table */
10234 10235 optp = (struct opthdr *)&mpctl->b_rptr[
10235 10236 sizeof (struct T_optmgmt_ack)];
10236 10237 optp->level = MIB2_IP;
10237 10238 optp->name = EXPER_IP_GROUP_MEMBERSHIP;
10238 10239
10239 10240 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10240 10241 ill = ILL_START_WALK_V4(&ctx, ipst);
10241 10242 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10242 10243 /* Make sure the ill isn't going away. */
10243 10244 if (!ill_check_and_refhold(ill))
10244 10245 continue;
10245 10246 rw_exit(&ipst->ips_ill_g_lock);
10246 10247 rw_enter(&ill->ill_mcast_lock, RW_READER);
10247 10248 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10248 10249 if (ilm->ilm_zoneid != zoneid &&
10249 10250 ilm->ilm_zoneid != ALL_ZONES)
10250 10251 continue;
10251 10252
10252 10253 /* Is there an ipif for ilm_ifaddr? */
10253 10254 for (ipif = ill->ill_ipif; ipif != NULL;
10254 10255 ipif = ipif->ipif_next) {
10255 10256 if (!IPIF_IS_CONDEMNED(ipif) &&
10256 10257 ipif->ipif_lcl_addr == ilm->ilm_ifaddr &&
10257 10258 ilm->ilm_ifaddr != INADDR_ANY)
10258 10259 break;
10259 10260 }
10260 10261 if (ipif != NULL) {
10261 10262 ipif_get_name(ipif,
10262 10263 ipm.ipGroupMemberIfIndex.o_bytes,
10263 10264 OCTET_LENGTH);
10264 10265 } else {
10265 10266 ill_get_name(ill,
10266 10267 ipm.ipGroupMemberIfIndex.o_bytes,
10267 10268 OCTET_LENGTH);
10268 10269 }
10269 10270 ipm.ipGroupMemberIfIndex.o_length =
10270 10271 mi_strlen(ipm.ipGroupMemberIfIndex.o_bytes);
10271 10272
10272 10273 ipm.ipGroupMemberAddress = ilm->ilm_addr;
10273 10274 ipm.ipGroupMemberRefCnt = ilm->ilm_refcnt;
10274 10275 ipm.ipGroupMemberFilterMode = ilm->ilm_fmode;
10275 10276 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10276 10277 (char *)&ipm, (int)sizeof (ipm))) {
10277 10278 ip1dbg(("ip_snmp_get_mib2_ip_group: "
10278 10279 "failed to allocate %u bytes\n",
10279 10280 (uint_t)sizeof (ipm)));
10280 10281 }
10281 10282 }
10282 10283 rw_exit(&ill->ill_mcast_lock);
10283 10284 ill_refrele(ill);
10284 10285 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10285 10286 }
10286 10287 rw_exit(&ipst->ips_ill_g_lock);
10287 10288 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10288 10289 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10289 10290 (int)optp->level, (int)optp->name, (int)optp->len));
10290 10291 qreply(q, mpctl);
10291 10292 return (mp2ctl);
10292 10293 }
10293 10294
10294 10295 /* IPv6 multicast group membership. */
10295 10296 static mblk_t *
10296 10297 ip_snmp_get_mib2_ip6_group_mem(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10297 10298 {
10298 10299 struct opthdr *optp;
10299 10300 mblk_t *mp2ctl;
10300 10301 ill_t *ill;
10301 10302 ilm_t *ilm;
10302 10303 ipv6_member_t ipm6;
10303 10304 mblk_t *mp_tail = NULL;
10304 10305 ill_walk_context_t ctx;
10305 10306 zoneid_t zoneid;
10306 10307
10307 10308 /*
10308 10309 * make a copy of the original message
10309 10310 */
10310 10311 mp2ctl = copymsg(mpctl);
10311 10312 zoneid = Q_TO_CONN(q)->conn_zoneid;
10312 10313
10313 10314 /* ip6GroupMember table */
10314 10315 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10315 10316 optp->level = MIB2_IP6;
10316 10317 optp->name = EXPER_IP6_GROUP_MEMBERSHIP;
10317 10318
10318 10319 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10319 10320 ill = ILL_START_WALK_V6(&ctx, ipst);
10320 10321 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10321 10322 /* Make sure the ill isn't going away. */
10322 10323 if (!ill_check_and_refhold(ill))
10323 10324 continue;
10324 10325 rw_exit(&ipst->ips_ill_g_lock);
10325 10326 /*
10326 10327 * Normally we don't have any members on under IPMP interfaces.
10327 10328 * We report them as a debugging aid.
10328 10329 */
10329 10330 rw_enter(&ill->ill_mcast_lock, RW_READER);
10330 10331 ipm6.ipv6GroupMemberIfIndex = ill->ill_phyint->phyint_ifindex;
10331 10332 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10332 10333 if (ilm->ilm_zoneid != zoneid &&
10333 10334 ilm->ilm_zoneid != ALL_ZONES)
10334 10335 continue; /* not this zone */
10335 10336 ipm6.ipv6GroupMemberAddress = ilm->ilm_v6addr;
10336 10337 ipm6.ipv6GroupMemberRefCnt = ilm->ilm_refcnt;
10337 10338 ipm6.ipv6GroupMemberFilterMode = ilm->ilm_fmode;
10338 10339 if (!snmp_append_data2(mpctl->b_cont,
10339 10340 &mp_tail,
10340 10341 (char *)&ipm6, (int)sizeof (ipm6))) {
10341 10342 ip1dbg(("ip_snmp_get_mib2_ip6_group: "
10342 10343 "failed to allocate %u bytes\n",
10343 10344 (uint_t)sizeof (ipm6)));
10344 10345 }
10345 10346 }
10346 10347 rw_exit(&ill->ill_mcast_lock);
10347 10348 ill_refrele(ill);
10348 10349 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10349 10350 }
10350 10351 rw_exit(&ipst->ips_ill_g_lock);
10351 10352
10352 10353 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10353 10354 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10354 10355 (int)optp->level, (int)optp->name, (int)optp->len));
10355 10356 qreply(q, mpctl);
10356 10357 return (mp2ctl);
10357 10358 }
10358 10359
10359 10360 /* IP multicast filtered sources */
10360 10361 static mblk_t *
10361 10362 ip_snmp_get_mib2_ip_group_src(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10362 10363 {
10363 10364 struct opthdr *optp;
10364 10365 mblk_t *mp2ctl;
10365 10366 ill_t *ill;
10366 10367 ipif_t *ipif;
10367 10368 ilm_t *ilm;
10368 10369 ip_grpsrc_t ips;
10369 10370 mblk_t *mp_tail = NULL;
10370 10371 ill_walk_context_t ctx;
10371 10372 zoneid_t zoneid;
10372 10373 int i;
10373 10374 slist_t *sl;
10374 10375
10375 10376 /*
10376 10377 * make a copy of the original message
10377 10378 */
10378 10379 mp2ctl = copymsg(mpctl);
10379 10380 zoneid = Q_TO_CONN(q)->conn_zoneid;
10380 10381
10381 10382 /* ipGroupSource table */
10382 10383 optp = (struct opthdr *)&mpctl->b_rptr[
10383 10384 sizeof (struct T_optmgmt_ack)];
10384 10385 optp->level = MIB2_IP;
10385 10386 optp->name = EXPER_IP_GROUP_SOURCES;
10386 10387
10387 10388 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10388 10389 ill = ILL_START_WALK_V4(&ctx, ipst);
10389 10390 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10390 10391 /* Make sure the ill isn't going away. */
10391 10392 if (!ill_check_and_refhold(ill))
10392 10393 continue;
10393 10394 rw_exit(&ipst->ips_ill_g_lock);
10394 10395 rw_enter(&ill->ill_mcast_lock, RW_READER);
10395 10396 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10396 10397 sl = ilm->ilm_filter;
10397 10398 if (ilm->ilm_zoneid != zoneid &&
10398 10399 ilm->ilm_zoneid != ALL_ZONES)
10399 10400 continue;
10400 10401 if (SLIST_IS_EMPTY(sl))
10401 10402 continue;
10402 10403
10403 10404 /* Is there an ipif for ilm_ifaddr? */
10404 10405 for (ipif = ill->ill_ipif; ipif != NULL;
10405 10406 ipif = ipif->ipif_next) {
10406 10407 if (!IPIF_IS_CONDEMNED(ipif) &&
10407 10408 ipif->ipif_lcl_addr == ilm->ilm_ifaddr &&
10408 10409 ilm->ilm_ifaddr != INADDR_ANY)
10409 10410 break;
10410 10411 }
10411 10412 if (ipif != NULL) {
10412 10413 ipif_get_name(ipif,
10413 10414 ips.ipGroupSourceIfIndex.o_bytes,
10414 10415 OCTET_LENGTH);
10415 10416 } else {
10416 10417 ill_get_name(ill,
10417 10418 ips.ipGroupSourceIfIndex.o_bytes,
10418 10419 OCTET_LENGTH);
10419 10420 }
10420 10421 ips.ipGroupSourceIfIndex.o_length =
10421 10422 mi_strlen(ips.ipGroupSourceIfIndex.o_bytes);
10422 10423
10423 10424 ips.ipGroupSourceGroup = ilm->ilm_addr;
10424 10425 for (i = 0; i < sl->sl_numsrc; i++) {
10425 10426 if (!IN6_IS_ADDR_V4MAPPED(&sl->sl_addr[i]))
10426 10427 continue;
10427 10428 IN6_V4MAPPED_TO_IPADDR(&sl->sl_addr[i],
10428 10429 ips.ipGroupSourceAddress);
10429 10430 if (snmp_append_data2(mpctl->b_cont, &mp_tail,
10430 10431 (char *)&ips, (int)sizeof (ips)) == 0) {
10431 10432 ip1dbg(("ip_snmp_get_mib2_ip_group_src:"
10432 10433 " failed to allocate %u bytes\n",
10433 10434 (uint_t)sizeof (ips)));
10434 10435 }
10435 10436 }
10436 10437 }
10437 10438 rw_exit(&ill->ill_mcast_lock);
10438 10439 ill_refrele(ill);
10439 10440 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10440 10441 }
10441 10442 rw_exit(&ipst->ips_ill_g_lock);
10442 10443 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10443 10444 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10444 10445 (int)optp->level, (int)optp->name, (int)optp->len));
10445 10446 qreply(q, mpctl);
10446 10447 return (mp2ctl);
10447 10448 }
10448 10449
10449 10450 /* IPv6 multicast filtered sources. */
10450 10451 static mblk_t *
10451 10452 ip_snmp_get_mib2_ip6_group_src(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10452 10453 {
10453 10454 struct opthdr *optp;
10454 10455 mblk_t *mp2ctl;
10455 10456 ill_t *ill;
10456 10457 ilm_t *ilm;
10457 10458 ipv6_grpsrc_t ips6;
10458 10459 mblk_t *mp_tail = NULL;
10459 10460 ill_walk_context_t ctx;
10460 10461 zoneid_t zoneid;
10461 10462 int i;
10462 10463 slist_t *sl;
10463 10464
10464 10465 /*
10465 10466 * make a copy of the original message
10466 10467 */
10467 10468 mp2ctl = copymsg(mpctl);
10468 10469 zoneid = Q_TO_CONN(q)->conn_zoneid;
10469 10470
10470 10471 /* ip6GroupMember table */
10471 10472 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10472 10473 optp->level = MIB2_IP6;
10473 10474 optp->name = EXPER_IP6_GROUP_SOURCES;
10474 10475
10475 10476 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10476 10477 ill = ILL_START_WALK_V6(&ctx, ipst);
10477 10478 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10478 10479 /* Make sure the ill isn't going away. */
10479 10480 if (!ill_check_and_refhold(ill))
10480 10481 continue;
10481 10482 rw_exit(&ipst->ips_ill_g_lock);
10482 10483 /*
10483 10484 * Normally we don't have any members on under IPMP interfaces.
10484 10485 * We report them as a debugging aid.
10485 10486 */
10486 10487 rw_enter(&ill->ill_mcast_lock, RW_READER);
10487 10488 ips6.ipv6GroupSourceIfIndex = ill->ill_phyint->phyint_ifindex;
10488 10489 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10489 10490 sl = ilm->ilm_filter;
10490 10491 if (ilm->ilm_zoneid != zoneid &&
10491 10492 ilm->ilm_zoneid != ALL_ZONES)
10492 10493 continue;
10493 10494 if (SLIST_IS_EMPTY(sl))
10494 10495 continue;
10495 10496 ips6.ipv6GroupSourceGroup = ilm->ilm_v6addr;
10496 10497 for (i = 0; i < sl->sl_numsrc; i++) {
10497 10498 ips6.ipv6GroupSourceAddress = sl->sl_addr[i];
10498 10499 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10499 10500 (char *)&ips6, (int)sizeof (ips6))) {
10500 10501 ip1dbg(("ip_snmp_get_mib2_ip6_"
10501 10502 "group_src: failed to allocate "
10502 10503 "%u bytes\n",
10503 10504 (uint_t)sizeof (ips6)));
10504 10505 }
10505 10506 }
10506 10507 }
10507 10508 rw_exit(&ill->ill_mcast_lock);
10508 10509 ill_refrele(ill);
10509 10510 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10510 10511 }
10511 10512 rw_exit(&ipst->ips_ill_g_lock);
10512 10513
10513 10514 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10514 10515 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10515 10516 (int)optp->level, (int)optp->name, (int)optp->len));
10516 10517 qreply(q, mpctl);
10517 10518 return (mp2ctl);
10518 10519 }
10519 10520
10520 10521 /* Multicast routing virtual interface table. */
10521 10522 static mblk_t *
10522 10523 ip_snmp_get_mib2_virt_multi(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10523 10524 {
10524 10525 struct opthdr *optp;
10525 10526 mblk_t *mp2ctl;
10526 10527
10527 10528 /*
10528 10529 * make a copy of the original message
10529 10530 */
10530 10531 mp2ctl = copymsg(mpctl);
10531 10532
10532 10533 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10533 10534 optp->level = EXPER_DVMRP;
10534 10535 optp->name = EXPER_DVMRP_VIF;
10535 10536 if (!ip_mroute_vif(mpctl->b_cont, ipst)) {
10536 10537 ip0dbg(("ip_mroute_vif: failed\n"));
10537 10538 }
10538 10539 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10539 10540 ip3dbg(("ip_snmp_get_mib2_virt_multi: level %d, name %d, len %d\n",
10540 10541 (int)optp->level, (int)optp->name, (int)optp->len));
10541 10542 qreply(q, mpctl);
10542 10543 return (mp2ctl);
10543 10544 }
10544 10545
10545 10546 /* Multicast routing table. */
10546 10547 static mblk_t *
10547 10548 ip_snmp_get_mib2_multi_rtable(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10548 10549 {
10549 10550 struct opthdr *optp;
10550 10551 mblk_t *mp2ctl;
10551 10552
10552 10553 /*
10553 10554 * make a copy of the original message
10554 10555 */
10555 10556 mp2ctl = copymsg(mpctl);
10556 10557
10557 10558 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10558 10559 optp->level = EXPER_DVMRP;
10559 10560 optp->name = EXPER_DVMRP_MRT;
10560 10561 if (!ip_mroute_mrt(mpctl->b_cont, ipst)) {
10561 10562 ip0dbg(("ip_mroute_mrt: failed\n"));
10562 10563 }
10563 10564 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10564 10565 ip3dbg(("ip_snmp_get_mib2_multi_rtable: level %d, name %d, len %d\n",
10565 10566 (int)optp->level, (int)optp->name, (int)optp->len));
10566 10567 qreply(q, mpctl);
10567 10568 return (mp2ctl);
10568 10569 }
10569 10570
10570 10571 /*
10571 10572 * Return ipRouteEntryTable, ipNetToMediaEntryTable, and ipRouteAttributeTable
10572 10573 * in one IRE walk.
10573 10574 */
10574 10575 static mblk_t *
10575 10576 ip_snmp_get_mib2_ip_route_media(queue_t *q, mblk_t *mpctl, int level,
10576 10577 ip_stack_t *ipst)
10577 10578 {
10578 10579 struct opthdr *optp;
10579 10580 mblk_t *mp2ctl; /* Returned */
10580 10581 mblk_t *mp3ctl; /* nettomedia */
10581 10582 mblk_t *mp4ctl; /* routeattrs */
10582 10583 iproutedata_t ird;
10583 10584 zoneid_t zoneid;
10584 10585
10585 10586 /*
10586 10587 * make copies of the original message
10587 10588 * - mp2ctl is returned unchanged to the caller for its use
10588 10589 * - mpctl is sent upstream as ipRouteEntryTable
10589 10590 * - mp3ctl is sent upstream as ipNetToMediaEntryTable
10590 10591 * - mp4ctl is sent upstream as ipRouteAttributeTable
10591 10592 */
10592 10593 mp2ctl = copymsg(mpctl);
10593 10594 mp3ctl = copymsg(mpctl);
10594 10595 mp4ctl = copymsg(mpctl);
10595 10596 if (mp3ctl == NULL || mp4ctl == NULL) {
10596 10597 freemsg(mp4ctl);
10597 10598 freemsg(mp3ctl);
10598 10599 freemsg(mp2ctl);
10599 10600 freemsg(mpctl);
10600 10601 return (NULL);
10601 10602 }
10602 10603
10603 10604 bzero(&ird, sizeof (ird));
10604 10605
10605 10606 ird.ird_route.lp_head = mpctl->b_cont;
10606 10607 ird.ird_netmedia.lp_head = mp3ctl->b_cont;
10607 10608 ird.ird_attrs.lp_head = mp4ctl->b_cont;
10608 10609 /*
10609 10610 * If the level has been set the special EXPER_IP_AND_ALL_IRES value,
10610 10611 * then also include ire_testhidden IREs and IRE_IF_CLONE. This is
10611 10612 * intended a temporary solution until a proper MIB API is provided
10612 10613 * that provides complete filtering/caller-opt-in.
10613 10614 */
10614 10615 if (level == EXPER_IP_AND_ALL_IRES)
10615 10616 ird.ird_flags |= IRD_REPORT_ALL;
10616 10617
10617 10618 zoneid = Q_TO_CONN(q)->conn_zoneid;
10618 10619 ire_walk_v4(ip_snmp_get2_v4, &ird, zoneid, ipst);
10619 10620
10620 10621 /* ipRouteEntryTable in mpctl */
10621 10622 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10622 10623 optp->level = MIB2_IP;
10623 10624 optp->name = MIB2_IP_ROUTE;
10624 10625 optp->len = msgdsize(ird.ird_route.lp_head);
10625 10626 ip3dbg(("ip_snmp_get_mib2_ip_route_media: level %d, name %d, len %d\n",
10626 10627 (int)optp->level, (int)optp->name, (int)optp->len));
10627 10628 qreply(q, mpctl);
10628 10629
10629 10630 /* ipNetToMediaEntryTable in mp3ctl */
10630 10631 ncec_walk(NULL, ip_snmp_get2_v4_media, &ird, ipst);
10631 10632
10632 10633 optp = (struct opthdr *)&mp3ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10633 10634 optp->level = MIB2_IP;
10634 10635 optp->name = MIB2_IP_MEDIA;
10635 10636 optp->len = msgdsize(ird.ird_netmedia.lp_head);
10636 10637 ip3dbg(("ip_snmp_get_mib2_ip_route_media: level %d, name %d, len %d\n",
10637 10638 (int)optp->level, (int)optp->name, (int)optp->len));
10638 10639 qreply(q, mp3ctl);
10639 10640
10640 10641 /* ipRouteAttributeTable in mp4ctl */
10641 10642 optp = (struct opthdr *)&mp4ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10642 10643 optp->level = MIB2_IP;
10643 10644 optp->name = EXPER_IP_RTATTR;
10644 10645 optp->len = msgdsize(ird.ird_attrs.lp_head);
10645 10646 ip3dbg(("ip_snmp_get_mib2_ip_route_media: level %d, name %d, len %d\n",
10646 10647 (int)optp->level, (int)optp->name, (int)optp->len));
10647 10648 if (optp->len == 0)
10648 10649 freemsg(mp4ctl);
10649 10650 else
10650 10651 qreply(q, mp4ctl);
10651 10652
10652 10653 return (mp2ctl);
10653 10654 }
10654 10655
10655 10656 /*
10656 10657 * Return ipv6RouteEntryTable and ipv6RouteAttributeTable in one IRE walk, and
10657 10658 * ipv6NetToMediaEntryTable in an NDP walk.
10658 10659 */
10659 10660 static mblk_t *
10660 10661 ip_snmp_get_mib2_ip6_route_media(queue_t *q, mblk_t *mpctl, int level,
10661 10662 ip_stack_t *ipst)
10662 10663 {
10663 10664 struct opthdr *optp;
10664 10665 mblk_t *mp2ctl; /* Returned */
10665 10666 mblk_t *mp3ctl; /* nettomedia */
10666 10667 mblk_t *mp4ctl; /* routeattrs */
10667 10668 iproutedata_t ird;
10668 10669 zoneid_t zoneid;
10669 10670
10670 10671 /*
10671 10672 * make copies of the original message
10672 10673 * - mp2ctl is returned unchanged to the caller for its use
10673 10674 * - mpctl is sent upstream as ipv6RouteEntryTable
10674 10675 * - mp3ctl is sent upstream as ipv6NetToMediaEntryTable
10675 10676 * - mp4ctl is sent upstream as ipv6RouteAttributeTable
10676 10677 */
10677 10678 mp2ctl = copymsg(mpctl);
10678 10679 mp3ctl = copymsg(mpctl);
10679 10680 mp4ctl = copymsg(mpctl);
10680 10681 if (mp3ctl == NULL || mp4ctl == NULL) {
10681 10682 freemsg(mp4ctl);
10682 10683 freemsg(mp3ctl);
10683 10684 freemsg(mp2ctl);
10684 10685 freemsg(mpctl);
10685 10686 return (NULL);
10686 10687 }
10687 10688
10688 10689 bzero(&ird, sizeof (ird));
10689 10690
10690 10691 ird.ird_route.lp_head = mpctl->b_cont;
10691 10692 ird.ird_netmedia.lp_head = mp3ctl->b_cont;
10692 10693 ird.ird_attrs.lp_head = mp4ctl->b_cont;
10693 10694 /*
10694 10695 * If the level has been set the special EXPER_IP_AND_ALL_IRES value,
10695 10696 * then also include ire_testhidden IREs and IRE_IF_CLONE. This is
10696 10697 * intended a temporary solution until a proper MIB API is provided
10697 10698 * that provides complete filtering/caller-opt-in.
10698 10699 */
10699 10700 if (level == EXPER_IP_AND_ALL_IRES)
10700 10701 ird.ird_flags |= IRD_REPORT_ALL;
10701 10702
10702 10703 zoneid = Q_TO_CONN(q)->conn_zoneid;
10703 10704 ire_walk_v6(ip_snmp_get2_v6_route, &ird, zoneid, ipst);
10704 10705
10705 10706 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10706 10707 optp->level = MIB2_IP6;
10707 10708 optp->name = MIB2_IP6_ROUTE;
10708 10709 optp->len = msgdsize(ird.ird_route.lp_head);
10709 10710 ip3dbg(("ip_snmp_get_mib2_ip6_route_media: level %d, name %d, len %d\n",
10710 10711 (int)optp->level, (int)optp->name, (int)optp->len));
10711 10712 qreply(q, mpctl);
10712 10713
10713 10714 /* ipv6NetToMediaEntryTable in mp3ctl */
10714 10715 ncec_walk(NULL, ip_snmp_get2_v6_media, &ird, ipst);
10715 10716
10716 10717 optp = (struct opthdr *)&mp3ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10717 10718 optp->level = MIB2_IP6;
10718 10719 optp->name = MIB2_IP6_MEDIA;
10719 10720 optp->len = msgdsize(ird.ird_netmedia.lp_head);
10720 10721 ip3dbg(("ip_snmp_get_mib2_ip6_route_media: level %d, name %d, len %d\n",
10721 10722 (int)optp->level, (int)optp->name, (int)optp->len));
10722 10723 qreply(q, mp3ctl);
10723 10724
10724 10725 /* ipv6RouteAttributeTable in mp4ctl */
10725 10726 optp = (struct opthdr *)&mp4ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10726 10727 optp->level = MIB2_IP6;
10727 10728 optp->name = EXPER_IP_RTATTR;
10728 10729 optp->len = msgdsize(ird.ird_attrs.lp_head);
10729 10730 ip3dbg(("ip_snmp_get_mib2_ip6_route_media: level %d, name %d, len %d\n",
10730 10731 (int)optp->level, (int)optp->name, (int)optp->len));
10731 10732 if (optp->len == 0)
10732 10733 freemsg(mp4ctl);
10733 10734 else
10734 10735 qreply(q, mp4ctl);
10735 10736
10736 10737 return (mp2ctl);
10737 10738 }
10738 10739
10739 10740 /*
10740 10741 * IPv6 mib: One per ill
10741 10742 */
10742 10743 static mblk_t *
10743 10744 ip_snmp_get_mib2_ip6(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
10744 10745 boolean_t legacy_req)
10745 10746 {
10746 10747 struct opthdr *optp;
10747 10748 mblk_t *mp2ctl;
10748 10749 ill_t *ill;
10749 10750 ill_walk_context_t ctx;
10750 10751 mblk_t *mp_tail = NULL;
10751 10752 mib2_ipv6AddrEntry_t mae6;
10752 10753 mib2_ipIfStatsEntry_t *ise;
10753 10754 size_t ise_size, iae_size;
10754 10755
10755 10756 /*
10756 10757 * Make a copy of the original message
10757 10758 */
10758 10759 mp2ctl = copymsg(mpctl);
10759 10760
10760 10761 /* fixed length IPv6 structure ... */
10761 10762
10762 10763 if (legacy_req) {
10763 10764 ise_size = LEGACY_MIB_SIZE(&ipst->ips_ip6_mib,
10764 10765 mib2_ipIfStatsEntry_t);
10765 10766 iae_size = LEGACY_MIB_SIZE(&mae6, mib2_ipv6AddrEntry_t);
10766 10767 } else {
10767 10768 ise_size = sizeof (mib2_ipIfStatsEntry_t);
10768 10769 iae_size = sizeof (mib2_ipv6AddrEntry_t);
10769 10770 }
10770 10771
10771 10772 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10772 10773 optp->level = MIB2_IP6;
10773 10774 optp->name = 0;
10774 10775 /* Include "unknown interface" ip6_mib */
10775 10776 ipst->ips_ip6_mib.ipIfStatsIPVersion = MIB2_INETADDRESSTYPE_ipv6;
10776 10777 ipst->ips_ip6_mib.ipIfStatsIfIndex =
10777 10778 MIB2_UNKNOWN_INTERFACE; /* Flag to netstat */
10778 10779 SET_MIB(ipst->ips_ip6_mib.ipIfStatsForwarding,
10779 10780 ipst->ips_ipv6_forwarding ? 1 : 2);
10780 10781 SET_MIB(ipst->ips_ip6_mib.ipIfStatsDefaultHopLimit,
10781 10782 ipst->ips_ipv6_def_hops);
10782 10783 SET_MIB(ipst->ips_ip6_mib.ipIfStatsEntrySize,
10783 10784 sizeof (mib2_ipIfStatsEntry_t));
10784 10785 SET_MIB(ipst->ips_ip6_mib.ipIfStatsAddrEntrySize,
10785 10786 sizeof (mib2_ipv6AddrEntry_t));
10786 10787 SET_MIB(ipst->ips_ip6_mib.ipIfStatsRouteEntrySize,
10787 10788 sizeof (mib2_ipv6RouteEntry_t));
10788 10789 SET_MIB(ipst->ips_ip6_mib.ipIfStatsNetToMediaEntrySize,
10789 10790 sizeof (mib2_ipv6NetToMediaEntry_t));
10790 10791 SET_MIB(ipst->ips_ip6_mib.ipIfStatsMemberEntrySize,
10791 10792 sizeof (ipv6_member_t));
10792 10793 SET_MIB(ipst->ips_ip6_mib.ipIfStatsGroupSourceEntrySize,
10793 10794 sizeof (ipv6_grpsrc_t));
10794 10795
10795 10796 /*
10796 10797 * Synchronize 64- and 32-bit counters
10797 10798 */
10798 10799 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsInReceives,
10799 10800 ipIfStatsHCInReceives);
10800 10801 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsInDelivers,
10801 10802 ipIfStatsHCInDelivers);
10802 10803 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsOutRequests,
10803 10804 ipIfStatsHCOutRequests);
10804 10805 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsOutForwDatagrams,
10805 10806 ipIfStatsHCOutForwDatagrams);
10806 10807 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsOutMcastPkts,
10807 10808 ipIfStatsHCOutMcastPkts);
10808 10809 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsInMcastPkts,
10809 10810 ipIfStatsHCInMcastPkts);
10810 10811
10811 10812 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10812 10813 (char *)&ipst->ips_ip6_mib, (int)ise_size)) {
10813 10814 ip1dbg(("ip_snmp_get_mib2_ip6: failed to allocate %u bytes\n",
10814 10815 (uint_t)ise_size));
10815 10816 } else if (legacy_req) {
10816 10817 /* Adjust the EntrySize fields for legacy requests. */
10817 10818 ise =
10818 10819 (mib2_ipIfStatsEntry_t *)(mp_tail->b_wptr - (int)ise_size);
10819 10820 SET_MIB(ise->ipIfStatsEntrySize, ise_size);
10820 10821 SET_MIB(ise->ipIfStatsAddrEntrySize, iae_size);
10821 10822 }
10822 10823
10823 10824 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10824 10825 ill = ILL_START_WALK_V6(&ctx, ipst);
10825 10826 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10826 10827 ill->ill_ip_mib->ipIfStatsIfIndex =
10827 10828 ill->ill_phyint->phyint_ifindex;
10828 10829 SET_MIB(ill->ill_ip_mib->ipIfStatsForwarding,
10829 10830 ipst->ips_ipv6_forwarding ? 1 : 2);
10830 10831 SET_MIB(ill->ill_ip_mib->ipIfStatsDefaultHopLimit,
10831 10832 ill->ill_max_hops);
10832 10833
10833 10834 /*
10834 10835 * Synchronize 64- and 32-bit counters
10835 10836 */
10836 10837 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsInReceives,
10837 10838 ipIfStatsHCInReceives);
10838 10839 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsInDelivers,
10839 10840 ipIfStatsHCInDelivers);
10840 10841 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsOutRequests,
10841 10842 ipIfStatsHCOutRequests);
10842 10843 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsOutForwDatagrams,
10843 10844 ipIfStatsHCOutForwDatagrams);
10844 10845 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsOutMcastPkts,
10845 10846 ipIfStatsHCOutMcastPkts);
10846 10847 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsInMcastPkts,
10847 10848 ipIfStatsHCInMcastPkts);
10848 10849
10849 10850 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10850 10851 (char *)ill->ill_ip_mib, (int)ise_size)) {
10851 10852 ip1dbg(("ip_snmp_get_mib2_ip6: failed to allocate "
10852 10853 "%u bytes\n", (uint_t)ise_size));
10853 10854 } else if (legacy_req) {
10854 10855 /* Adjust the EntrySize fields for legacy requests. */
10855 10856 ise = (mib2_ipIfStatsEntry_t *)(mp_tail->b_wptr -
10856 10857 (int)ise_size);
10857 10858 SET_MIB(ise->ipIfStatsEntrySize, ise_size);
10858 10859 SET_MIB(ise->ipIfStatsAddrEntrySize, iae_size);
10859 10860 }
10860 10861 }
10861 10862 rw_exit(&ipst->ips_ill_g_lock);
10862 10863
10863 10864 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10864 10865 ip3dbg(("ip_snmp_get_mib2_ip6: level %d, name %d, len %d\n",
10865 10866 (int)optp->level, (int)optp->name, (int)optp->len));
10866 10867 qreply(q, mpctl);
10867 10868 return (mp2ctl);
10868 10869 }
10869 10870
10870 10871 /*
10871 10872 * ICMPv6 mib: One per ill
10872 10873 */
10873 10874 static mblk_t *
10874 10875 ip_snmp_get_mib2_icmp6(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10875 10876 {
10876 10877 struct opthdr *optp;
10877 10878 mblk_t *mp2ctl;
10878 10879 ill_t *ill;
10879 10880 ill_walk_context_t ctx;
10880 10881 mblk_t *mp_tail = NULL;
10881 10882 /*
10882 10883 * Make a copy of the original message
10883 10884 */
10884 10885 mp2ctl = copymsg(mpctl);
10885 10886
10886 10887 /* fixed length ICMPv6 structure ... */
10887 10888
10888 10889 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10889 10890 optp->level = MIB2_ICMP6;
10890 10891 optp->name = 0;
10891 10892 /* Include "unknown interface" icmp6_mib */
10892 10893 ipst->ips_icmp6_mib.ipv6IfIcmpIfIndex =
10893 10894 MIB2_UNKNOWN_INTERFACE; /* netstat flag */
10894 10895 ipst->ips_icmp6_mib.ipv6IfIcmpEntrySize =
10895 10896 sizeof (mib2_ipv6IfIcmpEntry_t);
10896 10897 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10897 10898 (char *)&ipst->ips_icmp6_mib,
10898 10899 (int)sizeof (ipst->ips_icmp6_mib))) {
10899 10900 ip1dbg(("ip_snmp_get_mib2_icmp6: failed to allocate %u bytes\n",
10900 10901 (uint_t)sizeof (ipst->ips_icmp6_mib)));
10901 10902 }
10902 10903
10903 10904 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10904 10905 ill = ILL_START_WALK_V6(&ctx, ipst);
10905 10906 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10906 10907 ill->ill_icmp6_mib->ipv6IfIcmpIfIndex =
10907 10908 ill->ill_phyint->phyint_ifindex;
10908 10909 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10909 10910 (char *)ill->ill_icmp6_mib,
10910 10911 (int)sizeof (*ill->ill_icmp6_mib))) {
10911 10912 ip1dbg(("ip_snmp_get_mib2_icmp6: failed to allocate "
10912 10913 "%u bytes\n",
10913 10914 (uint_t)sizeof (*ill->ill_icmp6_mib)));
10914 10915 }
10915 10916 }
10916 10917 rw_exit(&ipst->ips_ill_g_lock);
10917 10918
10918 10919 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10919 10920 ip3dbg(("ip_snmp_get_mib2_icmp6: level %d, name %d, len %d\n",
10920 10921 (int)optp->level, (int)optp->name, (int)optp->len));
10921 10922 qreply(q, mpctl);
10922 10923 return (mp2ctl);
10923 10924 }
10924 10925
10925 10926 /*
10926 10927 * ire_walk routine to create both ipRouteEntryTable and
10927 10928 * ipRouteAttributeTable in one IRE walk
10928 10929 */
10929 10930 static void
10930 10931 ip_snmp_get2_v4(ire_t *ire, iproutedata_t *ird)
10931 10932 {
10932 10933 ill_t *ill;
10933 10934 mib2_ipRouteEntry_t *re;
10934 10935 mib2_ipAttributeEntry_t iaes;
10935 10936 tsol_ire_gw_secattr_t *attrp;
10936 10937 tsol_gc_t *gc = NULL;
10937 10938 tsol_gcgrp_t *gcgrp = NULL;
10938 10939 ip_stack_t *ipst = ire->ire_ipst;
10939 10940
10940 10941 ASSERT(ire->ire_ipversion == IPV4_VERSION);
10941 10942
10942 10943 if (!(ird->ird_flags & IRD_REPORT_ALL)) {
10943 10944 if (ire->ire_testhidden)
10944 10945 return;
10945 10946 if (ire->ire_type & IRE_IF_CLONE)
10946 10947 return;
10947 10948 }
10948 10949
10949 10950 if ((re = kmem_zalloc(sizeof (*re), KM_NOSLEEP)) == NULL)
10950 10951 return;
10951 10952
10952 10953 if ((attrp = ire->ire_gw_secattr) != NULL) {
10953 10954 mutex_enter(&attrp->igsa_lock);
10954 10955 if ((gc = attrp->igsa_gc) != NULL) {
10955 10956 gcgrp = gc->gc_grp;
10956 10957 ASSERT(gcgrp != NULL);
10957 10958 rw_enter(&gcgrp->gcgrp_rwlock, RW_READER);
10958 10959 }
10959 10960 mutex_exit(&attrp->igsa_lock);
10960 10961 }
10961 10962 /*
10962 10963 * Return all IRE types for route table... let caller pick and choose
10963 10964 */
10964 10965 re->ipRouteDest = ire->ire_addr;
10965 10966 ill = ire->ire_ill;
10966 10967 re->ipRouteIfIndex.o_length = 0;
10967 10968 if (ill != NULL) {
10968 10969 ill_get_name(ill, re->ipRouteIfIndex.o_bytes, OCTET_LENGTH);
10969 10970 re->ipRouteIfIndex.o_length =
10970 10971 mi_strlen(re->ipRouteIfIndex.o_bytes);
10971 10972 }
10972 10973 re->ipRouteMetric1 = -1;
10973 10974 re->ipRouteMetric2 = -1;
10974 10975 re->ipRouteMetric3 = -1;
10975 10976 re->ipRouteMetric4 = -1;
10976 10977
10977 10978 re->ipRouteNextHop = ire->ire_gateway_addr;
10978 10979 /* indirect(4), direct(3), or invalid(2) */
10979 10980 if (ire->ire_flags & (RTF_REJECT | RTF_BLACKHOLE))
10980 10981 re->ipRouteType = 2;
10981 10982 else if (ire->ire_type & IRE_ONLINK)
10982 10983 re->ipRouteType = 3;
10983 10984 else
10984 10985 re->ipRouteType = 4;
10985 10986
10986 10987 re->ipRouteProto = -1;
10987 10988 re->ipRouteAge = gethrestime_sec() - ire->ire_create_time;
10988 10989 re->ipRouteMask = ire->ire_mask;
10989 10990 re->ipRouteMetric5 = -1;
10990 10991 re->ipRouteInfo.re_max_frag = ire->ire_metrics.iulp_mtu;
10991 10992 if (ire->ire_ill != NULL && re->ipRouteInfo.re_max_frag == 0)
10992 10993 re->ipRouteInfo.re_max_frag = ire->ire_ill->ill_mtu;
10993 10994
10994 10995 re->ipRouteInfo.re_frag_flag = 0;
10995 10996 re->ipRouteInfo.re_rtt = 0;
10996 10997 re->ipRouteInfo.re_src_addr = 0;
10997 10998 re->ipRouteInfo.re_ref = ire->ire_refcnt;
10998 10999 re->ipRouteInfo.re_obpkt = ire->ire_ob_pkt_count;
10999 11000 re->ipRouteInfo.re_ibpkt = ire->ire_ib_pkt_count;
11000 11001 re->ipRouteInfo.re_flags = ire->ire_flags;
11001 11002
11002 11003 /* Add the IRE_IF_CLONE's counters to their parent IRE_INTERFACE */
11003 11004 if (ire->ire_type & IRE_INTERFACE) {
11004 11005 ire_t *child;
11005 11006
11006 11007 rw_enter(&ipst->ips_ire_dep_lock, RW_READER);
11007 11008 child = ire->ire_dep_children;
11008 11009 while (child != NULL) {
11009 11010 re->ipRouteInfo.re_obpkt += child->ire_ob_pkt_count;
11010 11011 re->ipRouteInfo.re_ibpkt += child->ire_ib_pkt_count;
11011 11012 child = child->ire_dep_sib_next;
11012 11013 }
11013 11014 rw_exit(&ipst->ips_ire_dep_lock);
11014 11015 }
11015 11016
11016 11017 if (ire->ire_flags & RTF_DYNAMIC) {
11017 11018 re->ipRouteInfo.re_ire_type = IRE_HOST_REDIRECT;
11018 11019 } else {
11019 11020 re->ipRouteInfo.re_ire_type = ire->ire_type;
11020 11021 }
11021 11022
11022 11023 if (!snmp_append_data2(ird->ird_route.lp_head, &ird->ird_route.lp_tail,
11023 11024 (char *)re, (int)sizeof (*re))) {
11024 11025 ip1dbg(("ip_snmp_get2_v4: failed to allocate %u bytes\n",
11025 11026 (uint_t)sizeof (*re)));
11026 11027 }
11027 11028
11028 11029 if (gc != NULL) {
11029 11030 iaes.iae_routeidx = ird->ird_idx;
11030 11031 iaes.iae_doi = gc->gc_db->gcdb_doi;
11031 11032 iaes.iae_slrange = gc->gc_db->gcdb_slrange;
11032 11033
11033 11034 if (!snmp_append_data2(ird->ird_attrs.lp_head,
11034 11035 &ird->ird_attrs.lp_tail, (char *)&iaes, sizeof (iaes))) {
11035 11036 ip1dbg(("ip_snmp_get2_v4: failed to allocate %u "
11036 11037 "bytes\n", (uint_t)sizeof (iaes)));
11037 11038 }
11038 11039 }
11039 11040
11040 11041 /* bump route index for next pass */
11041 11042 ird->ird_idx++;
11042 11043
11043 11044 kmem_free(re, sizeof (*re));
11044 11045 if (gcgrp != NULL)
11045 11046 rw_exit(&gcgrp->gcgrp_rwlock);
11046 11047 }
11047 11048
11048 11049 /*
11049 11050 * ire_walk routine to create ipv6RouteEntryTable and ipRouteEntryTable.
11050 11051 */
11051 11052 static void
11052 11053 ip_snmp_get2_v6_route(ire_t *ire, iproutedata_t *ird)
11053 11054 {
11054 11055 ill_t *ill;
11055 11056 mib2_ipv6RouteEntry_t *re;
11056 11057 mib2_ipAttributeEntry_t iaes;
11057 11058 tsol_ire_gw_secattr_t *attrp;
11058 11059 tsol_gc_t *gc = NULL;
11059 11060 tsol_gcgrp_t *gcgrp = NULL;
11060 11061 ip_stack_t *ipst = ire->ire_ipst;
11061 11062
11062 11063 ASSERT(ire->ire_ipversion == IPV6_VERSION);
11063 11064
11064 11065 if (!(ird->ird_flags & IRD_REPORT_ALL)) {
11065 11066 if (ire->ire_testhidden)
11066 11067 return;
11067 11068 if (ire->ire_type & IRE_IF_CLONE)
11068 11069 return;
11069 11070 }
11070 11071
11071 11072 if ((re = kmem_zalloc(sizeof (*re), KM_NOSLEEP)) == NULL)
11072 11073 return;
11073 11074
11074 11075 if ((attrp = ire->ire_gw_secattr) != NULL) {
11075 11076 mutex_enter(&attrp->igsa_lock);
11076 11077 if ((gc = attrp->igsa_gc) != NULL) {
11077 11078 gcgrp = gc->gc_grp;
11078 11079 ASSERT(gcgrp != NULL);
11079 11080 rw_enter(&gcgrp->gcgrp_rwlock, RW_READER);
11080 11081 }
11081 11082 mutex_exit(&attrp->igsa_lock);
11082 11083 }
11083 11084 /*
11084 11085 * Return all IRE types for route table... let caller pick and choose
11085 11086 */
11086 11087 re->ipv6RouteDest = ire->ire_addr_v6;
11087 11088 re->ipv6RoutePfxLength = ip_mask_to_plen_v6(&ire->ire_mask_v6);
11088 11089 re->ipv6RouteIndex = 0; /* Unique when multiple with same dest/plen */
11089 11090 re->ipv6RouteIfIndex.o_length = 0;
11090 11091 ill = ire->ire_ill;
11091 11092 if (ill != NULL) {
11092 11093 ill_get_name(ill, re->ipv6RouteIfIndex.o_bytes, OCTET_LENGTH);
11093 11094 re->ipv6RouteIfIndex.o_length =
11094 11095 mi_strlen(re->ipv6RouteIfIndex.o_bytes);
11095 11096 }
11096 11097
11097 11098 ASSERT(!(ire->ire_type & IRE_BROADCAST));
11098 11099
11099 11100 mutex_enter(&ire->ire_lock);
11100 11101 re->ipv6RouteNextHop = ire->ire_gateway_addr_v6;
11101 11102 mutex_exit(&ire->ire_lock);
11102 11103
11103 11104 /* remote(4), local(3), or discard(2) */
11104 11105 if (ire->ire_flags & (RTF_REJECT | RTF_BLACKHOLE))
11105 11106 re->ipv6RouteType = 2;
11106 11107 else if (ire->ire_type & IRE_ONLINK)
11107 11108 re->ipv6RouteType = 3;
11108 11109 else
11109 11110 re->ipv6RouteType = 4;
11110 11111
11111 11112 re->ipv6RouteProtocol = -1;
11112 11113 re->ipv6RoutePolicy = 0;
11113 11114 re->ipv6RouteAge = gethrestime_sec() - ire->ire_create_time;
11114 11115 re->ipv6RouteNextHopRDI = 0;
11115 11116 re->ipv6RouteWeight = 0;
11116 11117 re->ipv6RouteMetric = 0;
11117 11118 re->ipv6RouteInfo.re_max_frag = ire->ire_metrics.iulp_mtu;
11118 11119 if (ire->ire_ill != NULL && re->ipv6RouteInfo.re_max_frag == 0)
11119 11120 re->ipv6RouteInfo.re_max_frag = ire->ire_ill->ill_mtu;
11120 11121
11121 11122 re->ipv6RouteInfo.re_frag_flag = 0;
11122 11123 re->ipv6RouteInfo.re_rtt = 0;
11123 11124 re->ipv6RouteInfo.re_src_addr = ipv6_all_zeros;
11124 11125 re->ipv6RouteInfo.re_obpkt = ire->ire_ob_pkt_count;
11125 11126 re->ipv6RouteInfo.re_ibpkt = ire->ire_ib_pkt_count;
11126 11127 re->ipv6RouteInfo.re_ref = ire->ire_refcnt;
11127 11128 re->ipv6RouteInfo.re_flags = ire->ire_flags;
11128 11129
11129 11130 /* Add the IRE_IF_CLONE's counters to their parent IRE_INTERFACE */
11130 11131 if (ire->ire_type & IRE_INTERFACE) {
11131 11132 ire_t *child;
11132 11133
11133 11134 rw_enter(&ipst->ips_ire_dep_lock, RW_READER);
11134 11135 child = ire->ire_dep_children;
11135 11136 while (child != NULL) {
11136 11137 re->ipv6RouteInfo.re_obpkt += child->ire_ob_pkt_count;
11137 11138 re->ipv6RouteInfo.re_ibpkt += child->ire_ib_pkt_count;
11138 11139 child = child->ire_dep_sib_next;
11139 11140 }
11140 11141 rw_exit(&ipst->ips_ire_dep_lock);
11141 11142 }
11142 11143 if (ire->ire_flags & RTF_DYNAMIC) {
11143 11144 re->ipv6RouteInfo.re_ire_type = IRE_HOST_REDIRECT;
11144 11145 } else {
11145 11146 re->ipv6RouteInfo.re_ire_type = ire->ire_type;
11146 11147 }
11147 11148
11148 11149 if (!snmp_append_data2(ird->ird_route.lp_head, &ird->ird_route.lp_tail,
11149 11150 (char *)re, (int)sizeof (*re))) {
11150 11151 ip1dbg(("ip_snmp_get2_v6: failed to allocate %u bytes\n",
11151 11152 (uint_t)sizeof (*re)));
11152 11153 }
11153 11154
11154 11155 if (gc != NULL) {
11155 11156 iaes.iae_routeidx = ird->ird_idx;
11156 11157 iaes.iae_doi = gc->gc_db->gcdb_doi;
11157 11158 iaes.iae_slrange = gc->gc_db->gcdb_slrange;
11158 11159
11159 11160 if (!snmp_append_data2(ird->ird_attrs.lp_head,
11160 11161 &ird->ird_attrs.lp_tail, (char *)&iaes, sizeof (iaes))) {
11161 11162 ip1dbg(("ip_snmp_get2_v6: failed to allocate %u "
11162 11163 "bytes\n", (uint_t)sizeof (iaes)));
11163 11164 }
11164 11165 }
11165 11166
11166 11167 /* bump route index for next pass */
11167 11168 ird->ird_idx++;
11168 11169
11169 11170 kmem_free(re, sizeof (*re));
11170 11171 if (gcgrp != NULL)
11171 11172 rw_exit(&gcgrp->gcgrp_rwlock);
11172 11173 }
11173 11174
11174 11175 /*
11175 11176 * ncec_walk routine to create ipv6NetToMediaEntryTable
11176 11177 */
11177 11178 static void
11178 11179 ip_snmp_get2_v6_media(ncec_t *ncec, void *ptr)
11179 11180 {
11180 11181 iproutedata_t *ird = ptr;
11181 11182 ill_t *ill;
11182 11183 mib2_ipv6NetToMediaEntry_t ntme;
11183 11184
11184 11185 ill = ncec->ncec_ill;
11185 11186 /* skip arpce entries, and loopback ncec entries */
11186 11187 if (ill->ill_isv6 == B_FALSE || ill->ill_net_type == IRE_LOOPBACK)
11187 11188 return;
11188 11189 /*
11189 11190 * Neighbor cache entry attached to IRE with on-link
11190 11191 * destination.
11191 11192 * We report all IPMP groups on ncec_ill which is normally the upper.
11192 11193 */
11193 11194 ntme.ipv6NetToMediaIfIndex = ill->ill_phyint->phyint_ifindex;
11194 11195 ntme.ipv6NetToMediaNetAddress = ncec->ncec_addr;
11195 11196 ntme.ipv6NetToMediaPhysAddress.o_length = ill->ill_phys_addr_length;
11196 11197 if (ncec->ncec_lladdr != NULL) {
11197 11198 bcopy(ncec->ncec_lladdr, ntme.ipv6NetToMediaPhysAddress.o_bytes,
11198 11199 ntme.ipv6NetToMediaPhysAddress.o_length);
11199 11200 }
11200 11201 /*
11201 11202 * Note: Returns ND_* states. Should be:
11202 11203 * reachable(1), stale(2), delay(3), probe(4),
11203 11204 * invalid(5), unknown(6)
11204 11205 */
11205 11206 ntme.ipv6NetToMediaState = ncec->ncec_state;
11206 11207 ntme.ipv6NetToMediaLastUpdated = 0;
11207 11208
11208 11209 /* other(1), dynamic(2), static(3), local(4) */
11209 11210 if (NCE_MYADDR(ncec)) {
11210 11211 ntme.ipv6NetToMediaType = 4;
11211 11212 } else if (ncec->ncec_flags & NCE_F_PUBLISH) {
11212 11213 ntme.ipv6NetToMediaType = 1; /* proxy */
11213 11214 } else if (ncec->ncec_flags & NCE_F_STATIC) {
11214 11215 ntme.ipv6NetToMediaType = 3;
11215 11216 } else if (ncec->ncec_flags & (NCE_F_MCAST|NCE_F_BCAST)) {
11216 11217 ntme.ipv6NetToMediaType = 1;
11217 11218 } else {
11218 11219 ntme.ipv6NetToMediaType = 2;
11219 11220 }
11220 11221
11221 11222 if (!snmp_append_data2(ird->ird_netmedia.lp_head,
11222 11223 &ird->ird_netmedia.lp_tail, (char *)&ntme, sizeof (ntme))) {
11223 11224 ip1dbg(("ip_snmp_get2_v6_media: failed to allocate %u bytes\n",
11224 11225 (uint_t)sizeof (ntme)));
11225 11226 }
11226 11227 }
11227 11228
11228 11229 int
11229 11230 nce2ace(ncec_t *ncec)
11230 11231 {
11231 11232 int flags = 0;
11232 11233
11233 11234 if (NCE_ISREACHABLE(ncec))
11234 11235 flags |= ACE_F_RESOLVED;
11235 11236 if (ncec->ncec_flags & NCE_F_AUTHORITY)
11236 11237 flags |= ACE_F_AUTHORITY;
11237 11238 if (ncec->ncec_flags & NCE_F_PUBLISH)
11238 11239 flags |= ACE_F_PUBLISH;
11239 11240 if ((ncec->ncec_flags & NCE_F_NONUD) != 0)
11240 11241 flags |= ACE_F_PERMANENT;
11241 11242 if (NCE_MYADDR(ncec))
11242 11243 flags |= (ACE_F_MYADDR | ACE_F_AUTHORITY);
11243 11244 if (ncec->ncec_flags & NCE_F_UNVERIFIED)
11244 11245 flags |= ACE_F_UNVERIFIED;
11245 11246 if (ncec->ncec_flags & NCE_F_AUTHORITY)
11246 11247 flags |= ACE_F_AUTHORITY;
11247 11248 if (ncec->ncec_flags & NCE_F_DELAYED)
11248 11249 flags |= ACE_F_DELAYED;
11249 11250 return (flags);
11250 11251 }
11251 11252
11252 11253 /*
11253 11254 * ncec_walk routine to create ipNetToMediaEntryTable
11254 11255 */
11255 11256 static void
11256 11257 ip_snmp_get2_v4_media(ncec_t *ncec, void *ptr)
11257 11258 {
11258 11259 iproutedata_t *ird = ptr;
11259 11260 ill_t *ill;
11260 11261 mib2_ipNetToMediaEntry_t ntme;
11261 11262 const char *name = "unknown";
11262 11263 ipaddr_t ncec_addr;
11263 11264
11264 11265 ill = ncec->ncec_ill;
11265 11266 if (ill->ill_isv6 || (ncec->ncec_flags & NCE_F_BCAST) ||
11266 11267 ill->ill_net_type == IRE_LOOPBACK)
11267 11268 return;
11268 11269
11269 11270 /* We report all IPMP groups on ncec_ill which is normally the upper. */
11270 11271 name = ill->ill_name;
11271 11272 /* Based on RFC 4293: other(1), inval(2), dyn(3), stat(4) */
11272 11273 if (NCE_MYADDR(ncec)) {
11273 11274 ntme.ipNetToMediaType = 4;
11274 11275 } else if (ncec->ncec_flags & (NCE_F_MCAST|NCE_F_BCAST|NCE_F_PUBLISH)) {
11275 11276 ntme.ipNetToMediaType = 1;
11276 11277 } else {
11277 11278 ntme.ipNetToMediaType = 3;
11278 11279 }
11279 11280 ntme.ipNetToMediaIfIndex.o_length = MIN(OCTET_LENGTH, strlen(name));
11280 11281 bcopy(name, ntme.ipNetToMediaIfIndex.o_bytes,
11281 11282 ntme.ipNetToMediaIfIndex.o_length);
11282 11283
11283 11284 IN6_V4MAPPED_TO_IPADDR(&ncec->ncec_addr, ncec_addr);
11284 11285 bcopy(&ncec_addr, &ntme.ipNetToMediaNetAddress, sizeof (ncec_addr));
11285 11286
11286 11287 ntme.ipNetToMediaInfo.ntm_mask.o_length = sizeof (ipaddr_t);
11287 11288 ncec_addr = INADDR_BROADCAST;
11288 11289 bcopy(&ncec_addr, ntme.ipNetToMediaInfo.ntm_mask.o_bytes,
11289 11290 sizeof (ncec_addr));
11290 11291 /*
11291 11292 * map all the flags to the ACE counterpart.
11292 11293 */
11293 11294 ntme.ipNetToMediaInfo.ntm_flags = nce2ace(ncec);
11294 11295
11295 11296 ntme.ipNetToMediaPhysAddress.o_length =
11296 11297 MIN(OCTET_LENGTH, ill->ill_phys_addr_length);
11297 11298
11298 11299 if (!NCE_ISREACHABLE(ncec))
11299 11300 ntme.ipNetToMediaPhysAddress.o_length = 0;
11300 11301 else {
11301 11302 if (ncec->ncec_lladdr != NULL) {
11302 11303 bcopy(ncec->ncec_lladdr,
11303 11304 ntme.ipNetToMediaPhysAddress.o_bytes,
11304 11305 ntme.ipNetToMediaPhysAddress.o_length);
11305 11306 }
11306 11307 }
11307 11308
11308 11309 if (!snmp_append_data2(ird->ird_netmedia.lp_head,
11309 11310 &ird->ird_netmedia.lp_tail, (char *)&ntme, sizeof (ntme))) {
11310 11311 ip1dbg(("ip_snmp_get2_v4_media: failed to allocate %u bytes\n",
11311 11312 (uint_t)sizeof (ntme)));
11312 11313 }
11313 11314 }
11314 11315
11315 11316 /*
11316 11317 * return (0) if invalid set request, 1 otherwise, including non-tcp requests
11317 11318 */
11318 11319 /* ARGSUSED */
11319 11320 int
11320 11321 ip_snmp_set(queue_t *q, int level, int name, uchar_t *ptr, int len)
11321 11322 {
11322 11323 switch (level) {
11323 11324 case MIB2_IP:
11324 11325 case MIB2_ICMP:
11325 11326 switch (name) {
11326 11327 default:
11327 11328 break;
11328 11329 }
11329 11330 return (1);
11330 11331 default:
11331 11332 return (1);
11332 11333 }
11333 11334 }
11334 11335
11335 11336 /*
11336 11337 * When there exists both a 64- and 32-bit counter of a particular type
11337 11338 * (i.e., InReceives), only the 64-bit counters are added.
11338 11339 */
11339 11340 void
11340 11341 ip_mib2_add_ip_stats(mib2_ipIfStatsEntry_t *o1, mib2_ipIfStatsEntry_t *o2)
11341 11342 {
11342 11343 UPDATE_MIB(o1, ipIfStatsInHdrErrors, o2->ipIfStatsInHdrErrors);
11343 11344 UPDATE_MIB(o1, ipIfStatsInTooBigErrors, o2->ipIfStatsInTooBigErrors);
11344 11345 UPDATE_MIB(o1, ipIfStatsInNoRoutes, o2->ipIfStatsInNoRoutes);
11345 11346 UPDATE_MIB(o1, ipIfStatsInAddrErrors, o2->ipIfStatsInAddrErrors);
11346 11347 UPDATE_MIB(o1, ipIfStatsInUnknownProtos, o2->ipIfStatsInUnknownProtos);
11347 11348 UPDATE_MIB(o1, ipIfStatsInTruncatedPkts, o2->ipIfStatsInTruncatedPkts);
11348 11349 UPDATE_MIB(o1, ipIfStatsInDiscards, o2->ipIfStatsInDiscards);
11349 11350 UPDATE_MIB(o1, ipIfStatsOutDiscards, o2->ipIfStatsOutDiscards);
11350 11351 UPDATE_MIB(o1, ipIfStatsOutFragOKs, o2->ipIfStatsOutFragOKs);
11351 11352 UPDATE_MIB(o1, ipIfStatsOutFragFails, o2->ipIfStatsOutFragFails);
11352 11353 UPDATE_MIB(o1, ipIfStatsOutFragCreates, o2->ipIfStatsOutFragCreates);
11353 11354 UPDATE_MIB(o1, ipIfStatsReasmReqds, o2->ipIfStatsReasmReqds);
11354 11355 UPDATE_MIB(o1, ipIfStatsReasmOKs, o2->ipIfStatsReasmOKs);
11355 11356 UPDATE_MIB(o1, ipIfStatsReasmFails, o2->ipIfStatsReasmFails);
11356 11357 UPDATE_MIB(o1, ipIfStatsOutNoRoutes, o2->ipIfStatsOutNoRoutes);
11357 11358 UPDATE_MIB(o1, ipIfStatsReasmDuplicates, o2->ipIfStatsReasmDuplicates);
11358 11359 UPDATE_MIB(o1, ipIfStatsReasmPartDups, o2->ipIfStatsReasmPartDups);
11359 11360 UPDATE_MIB(o1, ipIfStatsForwProhibits, o2->ipIfStatsForwProhibits);
11360 11361 UPDATE_MIB(o1, udpInCksumErrs, o2->udpInCksumErrs);
11361 11362 UPDATE_MIB(o1, udpInOverflows, o2->udpInOverflows);
11362 11363 UPDATE_MIB(o1, rawipInOverflows, o2->rawipInOverflows);
11363 11364 UPDATE_MIB(o1, ipIfStatsInWrongIPVersion,
11364 11365 o2->ipIfStatsInWrongIPVersion);
11365 11366 UPDATE_MIB(o1, ipIfStatsOutWrongIPVersion,
11366 11367 o2->ipIfStatsInWrongIPVersion);
11367 11368 UPDATE_MIB(o1, ipIfStatsOutSwitchIPVersion,
11368 11369 o2->ipIfStatsOutSwitchIPVersion);
11369 11370 UPDATE_MIB(o1, ipIfStatsHCInReceives, o2->ipIfStatsHCInReceives);
11370 11371 UPDATE_MIB(o1, ipIfStatsHCInOctets, o2->ipIfStatsHCInOctets);
11371 11372 UPDATE_MIB(o1, ipIfStatsHCInForwDatagrams,
11372 11373 o2->ipIfStatsHCInForwDatagrams);
11373 11374 UPDATE_MIB(o1, ipIfStatsHCInDelivers, o2->ipIfStatsHCInDelivers);
11374 11375 UPDATE_MIB(o1, ipIfStatsHCOutRequests, o2->ipIfStatsHCOutRequests);
11375 11376 UPDATE_MIB(o1, ipIfStatsHCOutForwDatagrams,
11376 11377 o2->ipIfStatsHCOutForwDatagrams);
11377 11378 UPDATE_MIB(o1, ipIfStatsOutFragReqds, o2->ipIfStatsOutFragReqds);
11378 11379 UPDATE_MIB(o1, ipIfStatsHCOutTransmits, o2->ipIfStatsHCOutTransmits);
11379 11380 UPDATE_MIB(o1, ipIfStatsHCOutOctets, o2->ipIfStatsHCOutOctets);
11380 11381 UPDATE_MIB(o1, ipIfStatsHCInMcastPkts, o2->ipIfStatsHCInMcastPkts);
11381 11382 UPDATE_MIB(o1, ipIfStatsHCInMcastOctets, o2->ipIfStatsHCInMcastOctets);
11382 11383 UPDATE_MIB(o1, ipIfStatsHCOutMcastPkts, o2->ipIfStatsHCOutMcastPkts);
11383 11384 UPDATE_MIB(o1, ipIfStatsHCOutMcastOctets,
11384 11385 o2->ipIfStatsHCOutMcastOctets);
11385 11386 UPDATE_MIB(o1, ipIfStatsHCInBcastPkts, o2->ipIfStatsHCInBcastPkts);
11386 11387 UPDATE_MIB(o1, ipIfStatsHCOutBcastPkts, o2->ipIfStatsHCOutBcastPkts);
11387 11388 UPDATE_MIB(o1, ipsecInSucceeded, o2->ipsecInSucceeded);
11388 11389 UPDATE_MIB(o1, ipsecInFailed, o2->ipsecInFailed);
11389 11390 UPDATE_MIB(o1, ipInCksumErrs, o2->ipInCksumErrs);
11390 11391 UPDATE_MIB(o1, tcpInErrs, o2->tcpInErrs);
11391 11392 UPDATE_MIB(o1, udpNoPorts, o2->udpNoPorts);
11392 11393 }
11393 11394
11394 11395 void
11395 11396 ip_mib2_add_icmp6_stats(mib2_ipv6IfIcmpEntry_t *o1, mib2_ipv6IfIcmpEntry_t *o2)
11396 11397 {
11397 11398 UPDATE_MIB(o1, ipv6IfIcmpInMsgs, o2->ipv6IfIcmpInMsgs);
11398 11399 UPDATE_MIB(o1, ipv6IfIcmpInErrors, o2->ipv6IfIcmpInErrors);
11399 11400 UPDATE_MIB(o1, ipv6IfIcmpInDestUnreachs, o2->ipv6IfIcmpInDestUnreachs);
11400 11401 UPDATE_MIB(o1, ipv6IfIcmpInAdminProhibs, o2->ipv6IfIcmpInAdminProhibs);
11401 11402 UPDATE_MIB(o1, ipv6IfIcmpInTimeExcds, o2->ipv6IfIcmpInTimeExcds);
11402 11403 UPDATE_MIB(o1, ipv6IfIcmpInParmProblems, o2->ipv6IfIcmpInParmProblems);
11403 11404 UPDATE_MIB(o1, ipv6IfIcmpInPktTooBigs, o2->ipv6IfIcmpInPktTooBigs);
11404 11405 UPDATE_MIB(o1, ipv6IfIcmpInEchos, o2->ipv6IfIcmpInEchos);
11405 11406 UPDATE_MIB(o1, ipv6IfIcmpInEchoReplies, o2->ipv6IfIcmpInEchoReplies);
11406 11407 UPDATE_MIB(o1, ipv6IfIcmpInRouterSolicits,
11407 11408 o2->ipv6IfIcmpInRouterSolicits);
11408 11409 UPDATE_MIB(o1, ipv6IfIcmpInRouterAdvertisements,
11409 11410 o2->ipv6IfIcmpInRouterAdvertisements);
11410 11411 UPDATE_MIB(o1, ipv6IfIcmpInNeighborSolicits,
11411 11412 o2->ipv6IfIcmpInNeighborSolicits);
11412 11413 UPDATE_MIB(o1, ipv6IfIcmpInNeighborAdvertisements,
11413 11414 o2->ipv6IfIcmpInNeighborAdvertisements);
11414 11415 UPDATE_MIB(o1, ipv6IfIcmpInRedirects, o2->ipv6IfIcmpInRedirects);
11415 11416 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembQueries,
11416 11417 o2->ipv6IfIcmpInGroupMembQueries);
11417 11418 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembResponses,
11418 11419 o2->ipv6IfIcmpInGroupMembResponses);
11419 11420 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembReductions,
11420 11421 o2->ipv6IfIcmpInGroupMembReductions);
11421 11422 UPDATE_MIB(o1, ipv6IfIcmpOutMsgs, o2->ipv6IfIcmpOutMsgs);
11422 11423 UPDATE_MIB(o1, ipv6IfIcmpOutErrors, o2->ipv6IfIcmpOutErrors);
11423 11424 UPDATE_MIB(o1, ipv6IfIcmpOutDestUnreachs,
11424 11425 o2->ipv6IfIcmpOutDestUnreachs);
11425 11426 UPDATE_MIB(o1, ipv6IfIcmpOutAdminProhibs,
11426 11427 o2->ipv6IfIcmpOutAdminProhibs);
11427 11428 UPDATE_MIB(o1, ipv6IfIcmpOutTimeExcds, o2->ipv6IfIcmpOutTimeExcds);
11428 11429 UPDATE_MIB(o1, ipv6IfIcmpOutParmProblems,
11429 11430 o2->ipv6IfIcmpOutParmProblems);
11430 11431 UPDATE_MIB(o1, ipv6IfIcmpOutPktTooBigs, o2->ipv6IfIcmpOutPktTooBigs);
11431 11432 UPDATE_MIB(o1, ipv6IfIcmpOutEchos, o2->ipv6IfIcmpOutEchos);
11432 11433 UPDATE_MIB(o1, ipv6IfIcmpOutEchoReplies, o2->ipv6IfIcmpOutEchoReplies);
11433 11434 UPDATE_MIB(o1, ipv6IfIcmpOutRouterSolicits,
11434 11435 o2->ipv6IfIcmpOutRouterSolicits);
11435 11436 UPDATE_MIB(o1, ipv6IfIcmpOutRouterAdvertisements,
11436 11437 o2->ipv6IfIcmpOutRouterAdvertisements);
11437 11438 UPDATE_MIB(o1, ipv6IfIcmpOutNeighborSolicits,
11438 11439 o2->ipv6IfIcmpOutNeighborSolicits);
11439 11440 UPDATE_MIB(o1, ipv6IfIcmpOutNeighborAdvertisements,
11440 11441 o2->ipv6IfIcmpOutNeighborAdvertisements);
11441 11442 UPDATE_MIB(o1, ipv6IfIcmpOutRedirects, o2->ipv6IfIcmpOutRedirects);
11442 11443 UPDATE_MIB(o1, ipv6IfIcmpOutGroupMembQueries,
11443 11444 o2->ipv6IfIcmpOutGroupMembQueries);
11444 11445 UPDATE_MIB(o1, ipv6IfIcmpOutGroupMembResponses,
11445 11446 o2->ipv6IfIcmpOutGroupMembResponses);
11446 11447 UPDATE_MIB(o1, ipv6IfIcmpOutGroupMembReductions,
11447 11448 o2->ipv6IfIcmpOutGroupMembReductions);
11448 11449 UPDATE_MIB(o1, ipv6IfIcmpInOverflows, o2->ipv6IfIcmpInOverflows);
11449 11450 UPDATE_MIB(o1, ipv6IfIcmpBadHoplimit, o2->ipv6IfIcmpBadHoplimit);
11450 11451 UPDATE_MIB(o1, ipv6IfIcmpInBadNeighborAdvertisements,
11451 11452 o2->ipv6IfIcmpInBadNeighborAdvertisements);
11452 11453 UPDATE_MIB(o1, ipv6IfIcmpInBadNeighborSolicitations,
11453 11454 o2->ipv6IfIcmpInBadNeighborSolicitations);
11454 11455 UPDATE_MIB(o1, ipv6IfIcmpInBadRedirects, o2->ipv6IfIcmpInBadRedirects);
11455 11456 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembTotal,
11456 11457 o2->ipv6IfIcmpInGroupMembTotal);
11457 11458 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembBadQueries,
11458 11459 o2->ipv6IfIcmpInGroupMembBadQueries);
11459 11460 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembBadReports,
11460 11461 o2->ipv6IfIcmpInGroupMembBadReports);
11461 11462 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembOurReports,
11462 11463 o2->ipv6IfIcmpInGroupMembOurReports);
11463 11464 }
11464 11465
11465 11466 /*
11466 11467 * Called before the options are updated to check if this packet will
11467 11468 * be source routed from here.
11468 11469 * This routine assumes that the options are well formed i.e. that they
11469 11470 * have already been checked.
11470 11471 */
11471 11472 boolean_t
11472 11473 ip_source_routed(ipha_t *ipha, ip_stack_t *ipst)
11473 11474 {
11474 11475 ipoptp_t opts;
11475 11476 uchar_t *opt;
11476 11477 uint8_t optval;
11477 11478 uint8_t optlen;
11478 11479 ipaddr_t dst;
11479 11480
11480 11481 if (IS_SIMPLE_IPH(ipha)) {
11481 11482 ip2dbg(("not source routed\n"));
11482 11483 return (B_FALSE);
11483 11484 }
11484 11485 dst = ipha->ipha_dst;
11485 11486 for (optval = ipoptp_first(&opts, ipha);
11486 11487 optval != IPOPT_EOL;
11487 11488 optval = ipoptp_next(&opts)) {
11488 11489 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
11489 11490 opt = opts.ipoptp_cur;
11490 11491 optlen = opts.ipoptp_len;
11491 11492 ip2dbg(("ip_source_routed: opt %d, len %d\n",
11492 11493 optval, optlen));
11493 11494 switch (optval) {
11494 11495 uint32_t off;
11495 11496 case IPOPT_SSRR:
11496 11497 case IPOPT_LSRR:
11497 11498 /*
11498 11499 * If dst is one of our addresses and there are some
11499 11500 * entries left in the source route return (true).
11500 11501 */
11501 11502 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
11502 11503 ip2dbg(("ip_source_routed: not next"
11503 11504 " source route 0x%x\n",
11504 11505 ntohl(dst)));
11505 11506 return (B_FALSE);
11506 11507 }
11507 11508 off = opt[IPOPT_OFFSET];
11508 11509 off--;
11509 11510 if (optlen < IP_ADDR_LEN ||
11510 11511 off > optlen - IP_ADDR_LEN) {
11511 11512 /* End of source route */
11512 11513 ip1dbg(("ip_source_routed: end of SR\n"));
11513 11514 return (B_FALSE);
11514 11515 }
11515 11516 return (B_TRUE);
11516 11517 }
11517 11518 }
11518 11519 ip2dbg(("not source routed\n"));
11519 11520 return (B_FALSE);
11520 11521 }
11521 11522
11522 11523 /*
11523 11524 * ip_unbind is called by the transports to remove a conn from
11524 11525 * the fanout table.
11525 11526 */
11526 11527 void
11527 11528 ip_unbind(conn_t *connp)
11528 11529 {
11529 11530
11530 11531 ASSERT(!MUTEX_HELD(&connp->conn_lock));
11531 11532
11532 11533 if (is_system_labeled() && connp->conn_anon_port) {
11533 11534 (void) tsol_mlp_anon(crgetzone(connp->conn_cred),
11534 11535 connp->conn_mlp_type, connp->conn_proto,
11535 11536 ntohs(connp->conn_lport), B_FALSE);
11536 11537 connp->conn_anon_port = 0;
11537 11538 }
11538 11539 connp->conn_mlp_type = mlptSingle;
11539 11540
11540 11541 ipcl_hash_remove(connp);
11541 11542 }
11542 11543
11543 11544 /*
11544 11545 * Used for deciding the MSS size for the upper layer. Thus
11545 11546 * we need to check the outbound policy values in the conn.
11546 11547 */
11547 11548 int
11548 11549 conn_ipsec_length(conn_t *connp)
11549 11550 {
11550 11551 ipsec_latch_t *ipl;
11551 11552
11552 11553 ipl = connp->conn_latch;
11553 11554 if (ipl == NULL)
11554 11555 return (0);
11555 11556
11556 11557 if (connp->conn_ixa->ixa_ipsec_policy == NULL)
11557 11558 return (0);
11558 11559
11559 11560 return (connp->conn_ixa->ixa_ipsec_policy->ipsp_act->ipa_ovhd);
11560 11561 }
11561 11562
11562 11563 /*
11563 11564 * Returns an estimate of the IPsec headers size. This is used if
11564 11565 * we don't want to call into IPsec to get the exact size.
11565 11566 */
11566 11567 int
11567 11568 ipsec_out_extra_length(ip_xmit_attr_t *ixa)
11568 11569 {
11569 11570 ipsec_action_t *a;
11570 11571
11571 11572 if (!(ixa->ixa_flags & IXAF_IPSEC_SECURE))
11572 11573 return (0);
11573 11574
11574 11575 a = ixa->ixa_ipsec_action;
11575 11576 if (a == NULL) {
11576 11577 ASSERT(ixa->ixa_ipsec_policy != NULL);
11577 11578 a = ixa->ixa_ipsec_policy->ipsp_act;
11578 11579 }
11579 11580 ASSERT(a != NULL);
11580 11581
11581 11582 return (a->ipa_ovhd);
11582 11583 }
11583 11584
11584 11585 /*
11585 11586 * If there are any source route options, return the true final
11586 11587 * destination. Otherwise, return the destination.
11587 11588 */
11588 11589 ipaddr_t
11589 11590 ip_get_dst(ipha_t *ipha)
11590 11591 {
11591 11592 ipoptp_t opts;
11592 11593 uchar_t *opt;
11593 11594 uint8_t optval;
11594 11595 uint8_t optlen;
11595 11596 ipaddr_t dst;
11596 11597 uint32_t off;
11597 11598
11598 11599 dst = ipha->ipha_dst;
11599 11600
11600 11601 if (IS_SIMPLE_IPH(ipha))
11601 11602 return (dst);
11602 11603
11603 11604 for (optval = ipoptp_first(&opts, ipha);
11604 11605 optval != IPOPT_EOL;
11605 11606 optval = ipoptp_next(&opts)) {
11606 11607 opt = opts.ipoptp_cur;
11607 11608 optlen = opts.ipoptp_len;
11608 11609 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
11609 11610 switch (optval) {
11610 11611 case IPOPT_SSRR:
11611 11612 case IPOPT_LSRR:
11612 11613 off = opt[IPOPT_OFFSET];
11613 11614 /*
11614 11615 * If one of the conditions is true, it means
11615 11616 * end of options and dst already has the right
11616 11617 * value.
11617 11618 */
11618 11619 if (!(optlen < IP_ADDR_LEN || off > optlen - 3)) {
11619 11620 off = optlen - IP_ADDR_LEN;
11620 11621 bcopy(&opt[off], &dst, IP_ADDR_LEN);
11621 11622 }
11622 11623 return (dst);
11623 11624 default:
11624 11625 break;
11625 11626 }
11626 11627 }
11627 11628
11628 11629 return (dst);
11629 11630 }
11630 11631
11631 11632 /*
11632 11633 * Outbound IP fragmentation routine.
11633 11634 * Assumes the caller has checked whether or not fragmentation should
11634 11635 * be allowed. Here we copy the DF bit from the header to all the generated
11635 11636 * fragments.
11636 11637 */
11637 11638 int
11638 11639 ip_fragment_v4(mblk_t *mp_orig, nce_t *nce, iaflags_t ixaflags,
11639 11640 uint_t pkt_len, uint32_t max_frag, uint32_t xmit_hint, zoneid_t szone,
11640 11641 zoneid_t nolzid, pfirepostfrag_t postfragfn, uintptr_t *ixa_cookie)
11641 11642 {
11642 11643 int i1;
11643 11644 int hdr_len;
11644 11645 mblk_t *hdr_mp;
11645 11646 ipha_t *ipha;
11646 11647 int ip_data_end;
11647 11648 int len;
11648 11649 mblk_t *mp = mp_orig;
11649 11650 int offset;
11650 11651 ill_t *ill = nce->nce_ill;
11651 11652 ip_stack_t *ipst = ill->ill_ipst;
11652 11653 mblk_t *carve_mp;
11653 11654 uint32_t frag_flag;
11654 11655 uint_t priority = mp->b_band;
11655 11656 int error = 0;
11656 11657
11657 11658 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragReqds);
11658 11659
11659 11660 if (pkt_len != msgdsize(mp)) {
11660 11661 ip0dbg(("Packet length mismatch: %d, %ld\n",
11661 11662 pkt_len, msgdsize(mp)));
11662 11663 freemsg(mp);
11663 11664 return (EINVAL);
11664 11665 }
11665 11666
11666 11667 if (max_frag == 0) {
11667 11668 ip1dbg(("ip_fragment_v4: max_frag is zero. Dropping packet\n"));
11668 11669 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11669 11670 ip_drop_output("FragFails: zero max_frag", mp, ill);
11670 11671 freemsg(mp);
11671 11672 return (EINVAL);
11672 11673 }
11673 11674
11674 11675 ASSERT(MBLKL(mp) >= sizeof (ipha_t));
11675 11676 ipha = (ipha_t *)mp->b_rptr;
11676 11677 ASSERT(ntohs(ipha->ipha_length) == pkt_len);
11677 11678 frag_flag = ntohs(ipha->ipha_fragment_offset_and_flags) & IPH_DF;
11678 11679
11679 11680 /*
11680 11681 * Establish the starting offset. May not be zero if we are fragging
11681 11682 * a fragment that is being forwarded.
11682 11683 */
11683 11684 offset = ntohs(ipha->ipha_fragment_offset_and_flags) & IPH_OFFSET;
11684 11685
11685 11686 /* TODO why is this test needed? */
11686 11687 if (((max_frag - ntohs(ipha->ipha_length)) & ~7) < 8) {
11687 11688 /* TODO: notify ulp somehow */
11688 11689 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11689 11690 ip_drop_output("FragFails: bad starting offset", mp, ill);
11690 11691 freemsg(mp);
11691 11692 return (EINVAL);
11692 11693 }
11693 11694
11694 11695 hdr_len = IPH_HDR_LENGTH(ipha);
11695 11696 ipha->ipha_hdr_checksum = 0;
11696 11697
11697 11698 /*
11698 11699 * Establish the number of bytes maximum per frag, after putting
11699 11700 * in the header.
11700 11701 */
11701 11702 len = (max_frag - hdr_len) & ~7;
11702 11703
11703 11704 /* Get a copy of the header for the trailing frags */
11704 11705 hdr_mp = ip_fragment_copyhdr((uchar_t *)ipha, hdr_len, offset, ipst,
11705 11706 mp);
11706 11707 if (hdr_mp == NULL) {
11707 11708 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11708 11709 ip_drop_output("FragFails: no hdr_mp", mp, ill);
11709 11710 freemsg(mp);
11710 11711 return (ENOBUFS);
11711 11712 }
11712 11713
11713 11714 /* Store the starting offset, with the MoreFrags flag. */
11714 11715 i1 = offset | IPH_MF | frag_flag;
11715 11716 ipha->ipha_fragment_offset_and_flags = htons((uint16_t)i1);
11716 11717
11717 11718 /* Establish the ending byte offset, based on the starting offset. */
11718 11719 offset <<= 3;
11719 11720 ip_data_end = offset + ntohs(ipha->ipha_length) - hdr_len;
11720 11721
11721 11722 /* Store the length of the first fragment in the IP header. */
11722 11723 i1 = len + hdr_len;
11723 11724 ASSERT(i1 <= IP_MAXPACKET);
11724 11725 ipha->ipha_length = htons((uint16_t)i1);
11725 11726
11726 11727 /*
11727 11728 * Compute the IP header checksum for the first frag. We have to
11728 11729 * watch out that we stop at the end of the header.
11729 11730 */
11730 11731 ipha->ipha_hdr_checksum = ip_csum_hdr(ipha);
11731 11732
11732 11733 /*
11733 11734 * Now carve off the first frag. Note that this will include the
11734 11735 * original IP header.
11735 11736 */
11736 11737 if (!(mp = ip_carve_mp(&mp_orig, i1))) {
11737 11738 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11738 11739 ip_drop_output("FragFails: could not carve mp", mp_orig, ill);
11739 11740 freeb(hdr_mp);
11740 11741 freemsg(mp_orig);
11741 11742 return (ENOBUFS);
11742 11743 }
11743 11744
11744 11745 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragCreates);
11745 11746
11746 11747 error = postfragfn(mp, nce, ixaflags, i1, xmit_hint, szone, nolzid,
11747 11748 ixa_cookie);
11748 11749 if (error != 0 && error != EWOULDBLOCK) {
11749 11750 /* No point in sending the other fragments */
11750 11751 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11751 11752 ip_drop_output("FragFails: postfragfn failed", mp_orig, ill);
11752 11753 freeb(hdr_mp);
11753 11754 freemsg(mp_orig);
11754 11755 return (error);
11755 11756 }
11756 11757
11757 11758 /* No need to redo state machine in loop */
11758 11759 ixaflags &= ~IXAF_REACH_CONF;
11759 11760
11760 11761 /* Advance the offset to the second frag starting point. */
11761 11762 offset += len;
11762 11763 /*
11763 11764 * Update hdr_len from the copied header - there might be less options
11764 11765 * in the later fragments.
11765 11766 */
11766 11767 hdr_len = IPH_HDR_LENGTH(hdr_mp->b_rptr);
11767 11768 /* Loop until done. */
11768 11769 for (;;) {
11769 11770 uint16_t offset_and_flags;
11770 11771 uint16_t ip_len;
11771 11772
11772 11773 if (ip_data_end - offset > len) {
11773 11774 /*
11774 11775 * Carve off the appropriate amount from the original
11775 11776 * datagram.
11776 11777 */
11777 11778 if (!(carve_mp = ip_carve_mp(&mp_orig, len))) {
11778 11779 mp = NULL;
11779 11780 break;
11780 11781 }
11781 11782 /*
11782 11783 * More frags after this one. Get another copy
11783 11784 * of the header.
11784 11785 */
11785 11786 if (carve_mp->b_datap->db_ref == 1 &&
11786 11787 hdr_mp->b_wptr - hdr_mp->b_rptr <
11787 11788 carve_mp->b_rptr - carve_mp->b_datap->db_base) {
11788 11789 /* Inline IP header */
11789 11790 carve_mp->b_rptr -= hdr_mp->b_wptr -
11790 11791 hdr_mp->b_rptr;
11791 11792 bcopy(hdr_mp->b_rptr, carve_mp->b_rptr,
11792 11793 hdr_mp->b_wptr - hdr_mp->b_rptr);
11793 11794 mp = carve_mp;
11794 11795 } else {
11795 11796 if (!(mp = copyb(hdr_mp))) {
11796 11797 freemsg(carve_mp);
11797 11798 break;
11798 11799 }
11799 11800 /* Get priority marking, if any. */
11800 11801 mp->b_band = priority;
11801 11802 mp->b_cont = carve_mp;
11802 11803 }
11803 11804 ipha = (ipha_t *)mp->b_rptr;
11804 11805 offset_and_flags = IPH_MF;
11805 11806 } else {
11806 11807 /*
11807 11808 * Last frag. Consume the header. Set len to
11808 11809 * the length of this last piece.
11809 11810 */
11810 11811 len = ip_data_end - offset;
11811 11812
11812 11813 /*
11813 11814 * Carve off the appropriate amount from the original
11814 11815 * datagram.
11815 11816 */
11816 11817 if (!(carve_mp = ip_carve_mp(&mp_orig, len))) {
11817 11818 mp = NULL;
11818 11819 break;
11819 11820 }
11820 11821 if (carve_mp->b_datap->db_ref == 1 &&
11821 11822 hdr_mp->b_wptr - hdr_mp->b_rptr <
11822 11823 carve_mp->b_rptr - carve_mp->b_datap->db_base) {
11823 11824 /* Inline IP header */
11824 11825 carve_mp->b_rptr -= hdr_mp->b_wptr -
11825 11826 hdr_mp->b_rptr;
11826 11827 bcopy(hdr_mp->b_rptr, carve_mp->b_rptr,
11827 11828 hdr_mp->b_wptr - hdr_mp->b_rptr);
11828 11829 mp = carve_mp;
11829 11830 freeb(hdr_mp);
11830 11831 hdr_mp = mp;
11831 11832 } else {
11832 11833 mp = hdr_mp;
11833 11834 /* Get priority marking, if any. */
11834 11835 mp->b_band = priority;
11835 11836 mp->b_cont = carve_mp;
11836 11837 }
11837 11838 ipha = (ipha_t *)mp->b_rptr;
11838 11839 /* A frag of a frag might have IPH_MF non-zero */
11839 11840 offset_and_flags =
11840 11841 ntohs(ipha->ipha_fragment_offset_and_flags) &
11841 11842 IPH_MF;
11842 11843 }
11843 11844 offset_and_flags |= (uint16_t)(offset >> 3);
11844 11845 offset_and_flags |= (uint16_t)frag_flag;
11845 11846 /* Store the offset and flags in the IP header. */
11846 11847 ipha->ipha_fragment_offset_and_flags = htons(offset_and_flags);
11847 11848
11848 11849 /* Store the length in the IP header. */
11849 11850 ip_len = (uint16_t)(len + hdr_len);
11850 11851 ipha->ipha_length = htons(ip_len);
11851 11852
11852 11853 /*
11853 11854 * Set the IP header checksum. Note that mp is just
11854 11855 * the header, so this is easy to pass to ip_csum.
11855 11856 */
11856 11857 ipha->ipha_hdr_checksum = ip_csum_hdr(ipha);
11857 11858
11858 11859 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragCreates);
11859 11860
11860 11861 error = postfragfn(mp, nce, ixaflags, ip_len, xmit_hint, szone,
11861 11862 nolzid, ixa_cookie);
11862 11863 /* All done if we just consumed the hdr_mp. */
11863 11864 if (mp == hdr_mp) {
11864 11865 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragOKs);
11865 11866 return (error);
11866 11867 }
11867 11868 if (error != 0 && error != EWOULDBLOCK) {
11868 11869 DTRACE_PROBE2(ip__xmit__frag__fail, ill_t *, ill,
11869 11870 mblk_t *, hdr_mp);
11870 11871 /* No point in sending the other fragments */
11871 11872 break;
11872 11873 }
11873 11874
11874 11875 /* Otherwise, advance and loop. */
11875 11876 offset += len;
11876 11877 }
11877 11878 /* Clean up following allocation failure. */
11878 11879 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11879 11880 ip_drop_output("FragFails: loop ended", NULL, ill);
11880 11881 if (mp != hdr_mp)
11881 11882 freeb(hdr_mp);
11882 11883 if (mp != mp_orig)
11883 11884 freemsg(mp_orig);
11884 11885 return (error);
11885 11886 }
11886 11887
11887 11888 /*
11888 11889 * Copy the header plus those options which have the copy bit set
11889 11890 */
11890 11891 static mblk_t *
11891 11892 ip_fragment_copyhdr(uchar_t *rptr, int hdr_len, int offset, ip_stack_t *ipst,
11892 11893 mblk_t *src)
11893 11894 {
11894 11895 mblk_t *mp;
11895 11896 uchar_t *up;
11896 11897
11897 11898 /*
11898 11899 * Quick check if we need to look for options without the copy bit
11899 11900 * set
11900 11901 */
11901 11902 mp = allocb_tmpl(ipst->ips_ip_wroff_extra + hdr_len, src);
11902 11903 if (!mp)
11903 11904 return (mp);
11904 11905 mp->b_rptr += ipst->ips_ip_wroff_extra;
11905 11906 if (hdr_len == IP_SIMPLE_HDR_LENGTH || offset != 0) {
11906 11907 bcopy(rptr, mp->b_rptr, hdr_len);
11907 11908 mp->b_wptr += hdr_len + ipst->ips_ip_wroff_extra;
11908 11909 return (mp);
11909 11910 }
11910 11911 up = mp->b_rptr;
11911 11912 bcopy(rptr, up, IP_SIMPLE_HDR_LENGTH);
11912 11913 up += IP_SIMPLE_HDR_LENGTH;
11913 11914 rptr += IP_SIMPLE_HDR_LENGTH;
11914 11915 hdr_len -= IP_SIMPLE_HDR_LENGTH;
11915 11916 while (hdr_len > 0) {
11916 11917 uint32_t optval;
11917 11918 uint32_t optlen;
11918 11919
11919 11920 optval = *rptr;
11920 11921 if (optval == IPOPT_EOL)
11921 11922 break;
11922 11923 if (optval == IPOPT_NOP)
11923 11924 optlen = 1;
11924 11925 else
11925 11926 optlen = rptr[1];
11926 11927 if (optval & IPOPT_COPY) {
11927 11928 bcopy(rptr, up, optlen);
11928 11929 up += optlen;
11929 11930 }
11930 11931 rptr += optlen;
11931 11932 hdr_len -= optlen;
11932 11933 }
11933 11934 /*
11934 11935 * Make sure that we drop an even number of words by filling
11935 11936 * with EOL to the next word boundary.
11936 11937 */
11937 11938 for (hdr_len = up - (mp->b_rptr + IP_SIMPLE_HDR_LENGTH);
11938 11939 hdr_len & 0x3; hdr_len++)
11939 11940 *up++ = IPOPT_EOL;
11940 11941 mp->b_wptr = up;
11941 11942 /* Update header length */
11942 11943 mp->b_rptr[0] = (uint8_t)((IP_VERSION << 4) | ((up - mp->b_rptr) >> 2));
11943 11944 return (mp);
11944 11945 }
11945 11946
11946 11947 /*
11947 11948 * Update any source route, record route, or timestamp options when
11948 11949 * sending a packet back to ourselves.
11949 11950 * Check that we are at end of strict source route.
11950 11951 * The options have been sanity checked by ip_output_options().
11951 11952 */
11952 11953 void
11953 11954 ip_output_local_options(ipha_t *ipha, ip_stack_t *ipst)
11954 11955 {
11955 11956 ipoptp_t opts;
11956 11957 uchar_t *opt;
11957 11958 uint8_t optval;
11958 11959 uint8_t optlen;
11959 11960 ipaddr_t dst;
11960 11961 uint32_t ts;
11961 11962 timestruc_t now;
11962 11963 uint32_t off = 0;
11963 11964
11964 11965 for (optval = ipoptp_first(&opts, ipha);
11965 11966 optval != IPOPT_EOL;
11966 11967 optval = ipoptp_next(&opts)) {
11967 11968 opt = opts.ipoptp_cur;
11968 11969 optlen = opts.ipoptp_len;
11969 11970 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
11970 11971 switch (optval) {
11971 11972 case IPOPT_SSRR:
11972 11973 case IPOPT_LSRR:
11973 11974 off = opt[IPOPT_OFFSET];
11974 11975 off--;
11975 11976 if (optlen < IP_ADDR_LEN ||
11976 11977 off > optlen - IP_ADDR_LEN) {
11977 11978 /* End of source route */
11978 11979 break;
11979 11980 }
11980 11981 /*
11981 11982 * This will only happen if two consecutive entries
11982 11983 * in the source route contains our address or if
11983 11984 * it is a packet with a loose source route which
11984 11985 * reaches us before consuming the whole source route
11985 11986 */
11986 11987
11987 11988 if (optval == IPOPT_SSRR) {
11988 11989 return;
11989 11990 }
11990 11991 /*
11991 11992 * Hack: instead of dropping the packet truncate the
11992 11993 * source route to what has been used by filling the
11993 11994 * rest with IPOPT_NOP.
11994 11995 */
11995 11996 opt[IPOPT_OLEN] = (uint8_t)off;
11996 11997 while (off < optlen) {
11997 11998 opt[off++] = IPOPT_NOP;
11998 11999 }
11999 12000 break;
12000 12001 case IPOPT_RR:
12001 12002 off = opt[IPOPT_OFFSET];
12002 12003 off--;
12003 12004 if (optlen < IP_ADDR_LEN ||
12004 12005 off > optlen - IP_ADDR_LEN) {
12005 12006 /* No more room - ignore */
12006 12007 ip1dbg((
12007 12008 "ip_output_local_options: end of RR\n"));
12008 12009 break;
12009 12010 }
12010 12011 dst = htonl(INADDR_LOOPBACK);
12011 12012 bcopy(&dst, (char *)opt + off, IP_ADDR_LEN);
12012 12013 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
12013 12014 break;
12014 12015 case IPOPT_TS:
12015 12016 /* Insert timestamp if there is romm */
12016 12017 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
12017 12018 case IPOPT_TS_TSONLY:
12018 12019 off = IPOPT_TS_TIMELEN;
12019 12020 break;
12020 12021 case IPOPT_TS_PRESPEC:
12021 12022 case IPOPT_TS_PRESPEC_RFC791:
12022 12023 /* Verify that the address matched */
12023 12024 off = opt[IPOPT_OFFSET] - 1;
12024 12025 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
12025 12026 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
12026 12027 /* Not for us */
12027 12028 break;
12028 12029 }
12029 12030 /* FALLTHROUGH */
12030 12031 case IPOPT_TS_TSANDADDR:
12031 12032 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
12032 12033 break;
12033 12034 default:
12034 12035 /*
12035 12036 * ip_*put_options should have already
12036 12037 * dropped this packet.
12037 12038 */
12038 12039 cmn_err(CE_PANIC, "ip_output_local_options: "
12039 12040 "unknown IT - bug in ip_output_options?\n");
12040 12041 }
12041 12042 if (opt[IPOPT_OFFSET] - 1 + off > optlen) {
12042 12043 /* Increase overflow counter */
12043 12044 off = (opt[IPOPT_POS_OV_FLG] >> 4) + 1;
12044 12045 opt[IPOPT_POS_OV_FLG] = (uint8_t)
12045 12046 (opt[IPOPT_POS_OV_FLG] & 0x0F) |
12046 12047 (off << 4);
12047 12048 break;
12048 12049 }
12049 12050 off = opt[IPOPT_OFFSET] - 1;
12050 12051 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
12051 12052 case IPOPT_TS_PRESPEC:
12052 12053 case IPOPT_TS_PRESPEC_RFC791:
12053 12054 case IPOPT_TS_TSANDADDR:
12054 12055 dst = htonl(INADDR_LOOPBACK);
12055 12056 bcopy(&dst, (char *)opt + off, IP_ADDR_LEN);
12056 12057 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
12057 12058 /* FALLTHROUGH */
12058 12059 case IPOPT_TS_TSONLY:
12059 12060 off = opt[IPOPT_OFFSET] - 1;
12060 12061 /* Compute # of milliseconds since midnight */
12061 12062 gethrestime(&now);
12062 12063 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
12063 12064 NSEC2MSEC(now.tv_nsec);
12064 12065 bcopy(&ts, (char *)opt + off, IPOPT_TS_TIMELEN);
12065 12066 opt[IPOPT_OFFSET] += IPOPT_TS_TIMELEN;
12066 12067 break;
12067 12068 }
12068 12069 break;
12069 12070 }
12070 12071 }
12071 12072 }
12072 12073
12073 12074 /*
12074 12075 * Prepend an M_DATA fastpath header, and if none present prepend a
12075 12076 * DL_UNITDATA_REQ. Frees the mblk on failure.
12076 12077 *
12077 12078 * nce_dlur_mp and nce_fp_mp can not disappear once they have been set.
12078 12079 * If there is a change to them, the nce will be deleted (condemned) and
12079 12080 * a new nce_t will be created when packets are sent. Thus we need no locks
12080 12081 * to access those fields.
12081 12082 *
12082 12083 * We preserve b_band to support IPQoS. If a DL_UNITDATA_REQ is prepended
12083 12084 * we place b_band in dl_priority.dl_max.
12084 12085 */
12085 12086 static mblk_t *
12086 12087 ip_xmit_attach_llhdr(mblk_t *mp, nce_t *nce)
12087 12088 {
12088 12089 uint_t hlen;
12089 12090 mblk_t *mp1;
12090 12091 uint_t priority;
12091 12092 uchar_t *rptr;
12092 12093
12093 12094 rptr = mp->b_rptr;
12094 12095
12095 12096 ASSERT(DB_TYPE(mp) == M_DATA);
12096 12097 priority = mp->b_band;
12097 12098
12098 12099 ASSERT(nce != NULL);
12099 12100 if ((mp1 = nce->nce_fp_mp) != NULL) {
12100 12101 hlen = MBLKL(mp1);
12101 12102 /*
12102 12103 * Check if we have enough room to prepend fastpath
12103 12104 * header
12104 12105 */
12105 12106 if (hlen != 0 && (rptr - mp->b_datap->db_base) >= hlen) {
12106 12107 rptr -= hlen;
12107 12108 bcopy(mp1->b_rptr, rptr, hlen);
12108 12109 /*
12109 12110 * Set the b_rptr to the start of the link layer
12110 12111 * header
12111 12112 */
12112 12113 mp->b_rptr = rptr;
12113 12114 return (mp);
12114 12115 }
12115 12116 mp1 = copyb(mp1);
12116 12117 if (mp1 == NULL) {
12117 12118 ill_t *ill = nce->nce_ill;
12118 12119
12119 12120 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12120 12121 ip_drop_output("ipIfStatsOutDiscards", mp, ill);
12121 12122 freemsg(mp);
12122 12123 return (NULL);
12123 12124 }
12124 12125 mp1->b_band = priority;
12125 12126 mp1->b_cont = mp;
12126 12127 DB_CKSUMSTART(mp1) = DB_CKSUMSTART(mp);
12127 12128 DB_CKSUMSTUFF(mp1) = DB_CKSUMSTUFF(mp);
12128 12129 DB_CKSUMEND(mp1) = DB_CKSUMEND(mp);
12129 12130 DB_CKSUMFLAGS(mp1) = DB_CKSUMFLAGS(mp);
12130 12131 DB_LSOMSS(mp1) = DB_LSOMSS(mp);
12131 12132 DTRACE_PROBE1(ip__xmit__copyb, (mblk_t *), mp1);
12132 12133 /*
12133 12134 * XXX disable ICK_VALID and compute checksum
12134 12135 * here; can happen if nce_fp_mp changes and
12135 12136 * it can't be copied now due to insufficient
12136 12137 * space. (unlikely, fp mp can change, but it
12137 12138 * does not increase in length)
12138 12139 */
12139 12140 return (mp1);
12140 12141 }
12141 12142 mp1 = copyb(nce->nce_dlur_mp);
12142 12143
12143 12144 if (mp1 == NULL) {
12144 12145 ill_t *ill = nce->nce_ill;
12145 12146
12146 12147 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12147 12148 ip_drop_output("ipIfStatsOutDiscards", mp, ill);
12148 12149 freemsg(mp);
12149 12150 return (NULL);
12150 12151 }
12151 12152 mp1->b_cont = mp;
12152 12153 if (priority != 0) {
12153 12154 mp1->b_band = priority;
12154 12155 ((dl_unitdata_req_t *)(mp1->b_rptr))->dl_priority.dl_max =
12155 12156 priority;
12156 12157 }
12157 12158 return (mp1);
12158 12159 }
12159 12160
12160 12161 /*
12161 12162 * Finish the outbound IPsec processing. This function is called from
12162 12163 * ipsec_out_process() if the IPsec packet was processed
12163 12164 * synchronously, or from {ah,esp}_kcf_callback_outbound() if it was processed
12164 12165 * asynchronously.
12165 12166 *
12166 12167 * This is common to IPv4 and IPv6.
12167 12168 */
12168 12169 int
12169 12170 ip_output_post_ipsec(mblk_t *mp, ip_xmit_attr_t *ixa)
12170 12171 {
12171 12172 iaflags_t ixaflags = ixa->ixa_flags;
12172 12173 uint_t pktlen;
12173 12174
12174 12175
12175 12176 /* AH/ESP don't update ixa_pktlen when they modify the packet */
12176 12177 if (ixaflags & IXAF_IS_IPV4) {
12177 12178 ipha_t *ipha = (ipha_t *)mp->b_rptr;
12178 12179
12179 12180 ASSERT(IPH_HDR_VERSION(ipha) == IPV4_VERSION);
12180 12181 pktlen = ntohs(ipha->ipha_length);
12181 12182 } else {
12182 12183 ip6_t *ip6h = (ip6_t *)mp->b_rptr;
12183 12184
12184 12185 ASSERT(IPH_HDR_VERSION(mp->b_rptr) == IPV6_VERSION);
12185 12186 pktlen = ntohs(ip6h->ip6_plen) + IPV6_HDR_LEN;
12186 12187 }
12187 12188
12188 12189 /*
12189 12190 * We release any hard reference on the SAs here to make
12190 12191 * sure the SAs can be garbage collected. ipsr_sa has a soft reference
12191 12192 * on the SAs.
12192 12193 * If in the future we want the hard latching of the SAs in the
12193 12194 * ip_xmit_attr_t then we should remove this.
12194 12195 */
12195 12196 if (ixa->ixa_ipsec_esp_sa != NULL) {
12196 12197 IPSA_REFRELE(ixa->ixa_ipsec_esp_sa);
12197 12198 ixa->ixa_ipsec_esp_sa = NULL;
12198 12199 }
12199 12200 if (ixa->ixa_ipsec_ah_sa != NULL) {
12200 12201 IPSA_REFRELE(ixa->ixa_ipsec_ah_sa);
12201 12202 ixa->ixa_ipsec_ah_sa = NULL;
12202 12203 }
12203 12204
12204 12205 /* Do we need to fragment? */
12205 12206 if ((ixa->ixa_flags & IXAF_IPV6_ADD_FRAGHDR) ||
12206 12207 pktlen > ixa->ixa_fragsize) {
12207 12208 if (ixaflags & IXAF_IS_IPV4) {
12208 12209 ASSERT(!(ixa->ixa_flags & IXAF_IPV6_ADD_FRAGHDR));
12209 12210 /*
12210 12211 * We check for the DF case in ipsec_out_process
12211 12212 * hence this only handles the non-DF case.
12212 12213 */
12213 12214 return (ip_fragment_v4(mp, ixa->ixa_nce, ixa->ixa_flags,
12214 12215 pktlen, ixa->ixa_fragsize,
12215 12216 ixa->ixa_xmit_hint, ixa->ixa_zoneid,
12216 12217 ixa->ixa_no_loop_zoneid, ixa->ixa_postfragfn,
12217 12218 &ixa->ixa_cookie));
12218 12219 } else {
12219 12220 mp = ip_fraghdr_add_v6(mp, ixa->ixa_ident, ixa);
12220 12221 if (mp == NULL) {
12221 12222 /* MIB and ip_drop_output already done */
12222 12223 return (ENOMEM);
12223 12224 }
12224 12225 pktlen += sizeof (ip6_frag_t);
12225 12226 if (pktlen > ixa->ixa_fragsize) {
12226 12227 return (ip_fragment_v6(mp, ixa->ixa_nce,
12227 12228 ixa->ixa_flags, pktlen,
12228 12229 ixa->ixa_fragsize, ixa->ixa_xmit_hint,
12229 12230 ixa->ixa_zoneid, ixa->ixa_no_loop_zoneid,
12230 12231 ixa->ixa_postfragfn, &ixa->ixa_cookie));
12231 12232 }
12232 12233 }
12233 12234 }
12234 12235 return ((ixa->ixa_postfragfn)(mp, ixa->ixa_nce, ixa->ixa_flags,
12235 12236 pktlen, ixa->ixa_xmit_hint, ixa->ixa_zoneid,
12236 12237 ixa->ixa_no_loop_zoneid, NULL));
12237 12238 }
12238 12239
12239 12240 /*
12240 12241 * Finish the inbound IPsec processing. This function is called from
12241 12242 * ipsec_out_process() if the IPsec packet was processed
12242 12243 * synchronously, or from {ah,esp}_kcf_callback_outbound() if it was processed
12243 12244 * asynchronously.
12244 12245 *
12245 12246 * This is common to IPv4 and IPv6.
12246 12247 */
12247 12248 void
12248 12249 ip_input_post_ipsec(mblk_t *mp, ip_recv_attr_t *ira)
12249 12250 {
12250 12251 iaflags_t iraflags = ira->ira_flags;
12251 12252
12252 12253 /* Length might have changed */
12253 12254 if (iraflags & IRAF_IS_IPV4) {
12254 12255 ipha_t *ipha = (ipha_t *)mp->b_rptr;
12255 12256
12256 12257 ASSERT(IPH_HDR_VERSION(ipha) == IPV4_VERSION);
12257 12258 ira->ira_pktlen = ntohs(ipha->ipha_length);
12258 12259 ira->ira_ip_hdr_length = IPH_HDR_LENGTH(ipha);
12259 12260 ira->ira_protocol = ipha->ipha_protocol;
12260 12261
12261 12262 ip_fanout_v4(mp, ipha, ira);
12262 12263 } else {
12263 12264 ip6_t *ip6h = (ip6_t *)mp->b_rptr;
12264 12265 uint8_t *nexthdrp;
12265 12266
12266 12267 ASSERT(IPH_HDR_VERSION(mp->b_rptr) == IPV6_VERSION);
12267 12268 ira->ira_pktlen = ntohs(ip6h->ip6_plen) + IPV6_HDR_LEN;
12268 12269 if (!ip_hdr_length_nexthdr_v6(mp, ip6h, &ira->ira_ip_hdr_length,
12269 12270 &nexthdrp)) {
12270 12271 /* Malformed packet */
12271 12272 BUMP_MIB(ira->ira_ill->ill_ip_mib, ipIfStatsInDiscards);
12272 12273 ip_drop_input("ipIfStatsInDiscards", mp, ira->ira_ill);
12273 12274 freemsg(mp);
12274 12275 return;
12275 12276 }
12276 12277 ira->ira_protocol = *nexthdrp;
12277 12278 ip_fanout_v6(mp, ip6h, ira);
12278 12279 }
12279 12280 }
12280 12281
12281 12282 /*
12282 12283 * Select which AH & ESP SA's to use (if any) for the outbound packet.
12283 12284 *
12284 12285 * If this function returns B_TRUE, the requested SA's have been filled
12285 12286 * into the ixa_ipsec_*_sa pointers.
12286 12287 *
12287 12288 * If the function returns B_FALSE, the packet has been "consumed", most
12288 12289 * likely by an ACQUIRE sent up via PF_KEY to a key management daemon.
12289 12290 *
12290 12291 * The SA references created by the protocol-specific "select"
12291 12292 * function will be released in ip_output_post_ipsec.
12292 12293 */
12293 12294 static boolean_t
12294 12295 ipsec_out_select_sa(mblk_t *mp, ip_xmit_attr_t *ixa)
12295 12296 {
12296 12297 boolean_t need_ah_acquire = B_FALSE, need_esp_acquire = B_FALSE;
12297 12298 ipsec_policy_t *pp;
12298 12299 ipsec_action_t *ap;
12299 12300
12300 12301 ASSERT(ixa->ixa_flags & IXAF_IPSEC_SECURE);
12301 12302 ASSERT((ixa->ixa_ipsec_policy != NULL) ||
12302 12303 (ixa->ixa_ipsec_action != NULL));
12303 12304
12304 12305 ap = ixa->ixa_ipsec_action;
12305 12306 if (ap == NULL) {
12306 12307 pp = ixa->ixa_ipsec_policy;
12307 12308 ASSERT(pp != NULL);
12308 12309 ap = pp->ipsp_act;
12309 12310 ASSERT(ap != NULL);
12310 12311 }
12311 12312
12312 12313 /*
12313 12314 * We have an action. now, let's select SA's.
12314 12315 * A side effect of setting ixa_ipsec_*_sa is that it will
12315 12316 * be cached in the conn_t.
12316 12317 */
12317 12318 if (ap->ipa_want_esp) {
12318 12319 if (ixa->ixa_ipsec_esp_sa == NULL) {
12319 12320 need_esp_acquire = !ipsec_outbound_sa(mp, ixa,
12320 12321 IPPROTO_ESP);
12321 12322 }
12322 12323 ASSERT(need_esp_acquire || ixa->ixa_ipsec_esp_sa != NULL);
12323 12324 }
12324 12325
12325 12326 if (ap->ipa_want_ah) {
12326 12327 if (ixa->ixa_ipsec_ah_sa == NULL) {
12327 12328 need_ah_acquire = !ipsec_outbound_sa(mp, ixa,
12328 12329 IPPROTO_AH);
12329 12330 }
12330 12331 ASSERT(need_ah_acquire || ixa->ixa_ipsec_ah_sa != NULL);
12331 12332 /*
12332 12333 * The ESP and AH processing order needs to be preserved
12333 12334 * when both protocols are required (ESP should be applied
12334 12335 * before AH for an outbound packet). Force an ESP ACQUIRE
12335 12336 * when both ESP and AH are required, and an AH ACQUIRE
12336 12337 * is needed.
12337 12338 */
12338 12339 if (ap->ipa_want_esp && need_ah_acquire)
12339 12340 need_esp_acquire = B_TRUE;
12340 12341 }
12341 12342
12342 12343 /*
12343 12344 * Send an ACQUIRE (extended, regular, or both) if we need one.
12344 12345 * Release SAs that got referenced, but will not be used until we
12345 12346 * acquire _all_ of the SAs we need.
12346 12347 */
12347 12348 if (need_ah_acquire || need_esp_acquire) {
12348 12349 if (ixa->ixa_ipsec_ah_sa != NULL) {
12349 12350 IPSA_REFRELE(ixa->ixa_ipsec_ah_sa);
12350 12351 ixa->ixa_ipsec_ah_sa = NULL;
12351 12352 }
12352 12353 if (ixa->ixa_ipsec_esp_sa != NULL) {
12353 12354 IPSA_REFRELE(ixa->ixa_ipsec_esp_sa);
12354 12355 ixa->ixa_ipsec_esp_sa = NULL;
12355 12356 }
12356 12357
12357 12358 sadb_acquire(mp, ixa, need_ah_acquire, need_esp_acquire);
12358 12359 return (B_FALSE);
12359 12360 }
12360 12361
12361 12362 return (B_TRUE);
12362 12363 }
12363 12364
12364 12365 /*
12365 12366 * Handle IPsec output processing.
12366 12367 * This function is only entered once for a given packet.
12367 12368 * We try to do things synchronously, but if we need to have user-level
12368 12369 * set up SAs, or ESP or AH uses asynchronous kEF, then the operation
12369 12370 * will be completed
12370 12371 * - when the SAs are added in esp_add_sa_finish/ah_add_sa_finish
12371 12372 * - when asynchronous ESP is done it will do AH
12372 12373 *
12373 12374 * In all cases we come back in ip_output_post_ipsec() to fragment and
12374 12375 * send out the packet.
12375 12376 */
12376 12377 int
12377 12378 ipsec_out_process(mblk_t *mp, ip_xmit_attr_t *ixa)
12378 12379 {
12379 12380 ill_t *ill = ixa->ixa_nce->nce_ill;
12380 12381 ip_stack_t *ipst = ixa->ixa_ipst;
12381 12382 ipsec_stack_t *ipss;
12382 12383 ipsec_policy_t *pp;
12383 12384 ipsec_action_t *ap;
12384 12385
12385 12386 ASSERT(ixa->ixa_flags & IXAF_IPSEC_SECURE);
12386 12387
12387 12388 ASSERT((ixa->ixa_ipsec_policy != NULL) ||
12388 12389 (ixa->ixa_ipsec_action != NULL));
12389 12390
12390 12391 ipss = ipst->ips_netstack->netstack_ipsec;
12391 12392 if (!ipsec_loaded(ipss)) {
12392 12393 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12393 12394 ip_drop_packet(mp, B_TRUE, ill,
12394 12395 DROPPER(ipss, ipds_ip_ipsec_not_loaded),
12395 12396 &ipss->ipsec_dropper);
12396 12397 return (ENOTSUP);
12397 12398 }
12398 12399
12399 12400 ap = ixa->ixa_ipsec_action;
12400 12401 if (ap == NULL) {
12401 12402 pp = ixa->ixa_ipsec_policy;
12402 12403 ASSERT(pp != NULL);
12403 12404 ap = pp->ipsp_act;
12404 12405 ASSERT(ap != NULL);
12405 12406 }
12406 12407
12407 12408 /* Handle explicit drop action and bypass. */
12408 12409 switch (ap->ipa_act.ipa_type) {
12409 12410 case IPSEC_ACT_DISCARD:
12410 12411 case IPSEC_ACT_REJECT:
12411 12412 ip_drop_packet(mp, B_FALSE, ill,
12412 12413 DROPPER(ipss, ipds_spd_explicit), &ipss->ipsec_spd_dropper);
12413 12414 return (EHOSTUNREACH); /* IPsec policy failure */
12414 12415 case IPSEC_ACT_BYPASS:
12415 12416 return (ip_output_post_ipsec(mp, ixa));
12416 12417 }
12417 12418
12418 12419 /*
12419 12420 * The order of processing is first insert a IP header if needed.
12420 12421 * Then insert the ESP header and then the AH header.
12421 12422 */
12422 12423 if ((ixa->ixa_flags & IXAF_IS_IPV4) && ap->ipa_want_se) {
12423 12424 /*
12424 12425 * First get the outer IP header before sending
12425 12426 * it to ESP.
12426 12427 */
12427 12428 ipha_t *oipha, *iipha;
12428 12429 mblk_t *outer_mp, *inner_mp;
12429 12430
12430 12431 if ((outer_mp = allocb(sizeof (ipha_t), BPRI_HI)) == NULL) {
12431 12432 (void) mi_strlog(ill->ill_rq, 0,
12432 12433 SL_ERROR|SL_TRACE|SL_CONSOLE,
12433 12434 "ipsec_out_process: "
12434 12435 "Self-Encapsulation failed: Out of memory\n");
12435 12436 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12436 12437 ip_drop_output("ipIfStatsOutDiscards", mp, ill);
12437 12438 freemsg(mp);
12438 12439 return (ENOBUFS);
12439 12440 }
12440 12441 inner_mp = mp;
12441 12442 ASSERT(inner_mp->b_datap->db_type == M_DATA);
12442 12443 oipha = (ipha_t *)outer_mp->b_rptr;
12443 12444 iipha = (ipha_t *)inner_mp->b_rptr;
12444 12445 *oipha = *iipha;
12445 12446 outer_mp->b_wptr += sizeof (ipha_t);
12446 12447 oipha->ipha_length = htons(ntohs(iipha->ipha_length) +
12447 12448 sizeof (ipha_t));
12448 12449 oipha->ipha_protocol = IPPROTO_ENCAP;
12449 12450 oipha->ipha_version_and_hdr_length =
12450 12451 IP_SIMPLE_HDR_VERSION;
12451 12452 oipha->ipha_hdr_checksum = 0;
12452 12453 oipha->ipha_hdr_checksum = ip_csum_hdr(oipha);
12453 12454 outer_mp->b_cont = inner_mp;
12454 12455 mp = outer_mp;
12455 12456
12456 12457 ixa->ixa_flags |= IXAF_IPSEC_TUNNEL;
12457 12458 }
12458 12459
12459 12460 /* If we need to wait for a SA then we can't return any errno */
12460 12461 if (((ap->ipa_want_ah && (ixa->ixa_ipsec_ah_sa == NULL)) ||
12461 12462 (ap->ipa_want_esp && (ixa->ixa_ipsec_esp_sa == NULL))) &&
12462 12463 !ipsec_out_select_sa(mp, ixa))
12463 12464 return (0);
12464 12465
12465 12466 /*
12466 12467 * By now, we know what SA's to use. Toss over to ESP & AH
12467 12468 * to do the heavy lifting.
12468 12469 */
12469 12470 if (ap->ipa_want_esp) {
12470 12471 ASSERT(ixa->ixa_ipsec_esp_sa != NULL);
12471 12472
12472 12473 mp = ixa->ixa_ipsec_esp_sa->ipsa_output_func(mp, ixa);
12473 12474 if (mp == NULL) {
12474 12475 /*
12475 12476 * Either it failed or is pending. In the former case
12476 12477 * ipIfStatsInDiscards was increased.
12477 12478 */
12478 12479 return (0);
12479 12480 }
12480 12481 }
12481 12482
12482 12483 if (ap->ipa_want_ah) {
12483 12484 ASSERT(ixa->ixa_ipsec_ah_sa != NULL);
12484 12485
12485 12486 mp = ixa->ixa_ipsec_ah_sa->ipsa_output_func(mp, ixa);
12486 12487 if (mp == NULL) {
12487 12488 /*
12488 12489 * Either it failed or is pending. In the former case
12489 12490 * ipIfStatsInDiscards was increased.
12490 12491 */
12491 12492 return (0);
12492 12493 }
12493 12494 }
12494 12495 /*
12495 12496 * We are done with IPsec processing. Send it over
12496 12497 * the wire.
12497 12498 */
12498 12499 return (ip_output_post_ipsec(mp, ixa));
12499 12500 }
12500 12501
12501 12502 /*
12502 12503 * ioctls that go through a down/up sequence may need to wait for the down
12503 12504 * to complete. This involves waiting for the ire and ipif refcnts to go down
12504 12505 * to zero. Subsequently the ioctl is restarted from ipif_ill_refrele_tail.
12505 12506 */
12506 12507 /* ARGSUSED */
12507 12508 void
12508 12509 ip_reprocess_ioctl(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *dummy_arg)
12509 12510 {
12510 12511 struct iocblk *iocp;
12511 12512 mblk_t *mp1;
12512 12513 ip_ioctl_cmd_t *ipip;
12513 12514 int err;
12514 12515 sin_t *sin;
12515 12516 struct lifreq *lifr;
12516 12517 struct ifreq *ifr;
12517 12518
12518 12519 iocp = (struct iocblk *)mp->b_rptr;
12519 12520 ASSERT(ipsq != NULL);
12520 12521 /* Existence of mp1 verified in ip_wput_nondata */
12521 12522 mp1 = mp->b_cont->b_cont;
12522 12523 ipip = ip_sioctl_lookup(iocp->ioc_cmd);
12523 12524 if (ipip->ipi_cmd == SIOCSLIFNAME || ipip->ipi_cmd == IF_UNITSEL) {
12524 12525 /*
12525 12526 * Special case where ipx_current_ipif is not set:
12526 12527 * ill_phyint_reinit merged the v4 and v6 into a single ipsq.
12527 12528 * We are here as were not able to complete the operation in
12528 12529 * ipif_set_values because we could not become exclusive on
12529 12530 * the new ipsq.
12530 12531 */
12531 12532 ill_t *ill = q->q_ptr;
12532 12533 ipsq_current_start(ipsq, ill->ill_ipif, ipip->ipi_cmd);
12533 12534 }
12534 12535 ASSERT(ipsq->ipsq_xop->ipx_current_ipif != NULL);
12535 12536
12536 12537 if (ipip->ipi_cmd_type == IF_CMD) {
12537 12538 /* This a old style SIOC[GS]IF* command */
12538 12539 ifr = (struct ifreq *)mp1->b_rptr;
12539 12540 sin = (sin_t *)&ifr->ifr_addr;
12540 12541 } else if (ipip->ipi_cmd_type == LIF_CMD) {
12541 12542 /* This a new style SIOC[GS]LIF* command */
12542 12543 lifr = (struct lifreq *)mp1->b_rptr;
12543 12544 sin = (sin_t *)&lifr->lifr_addr;
12544 12545 } else {
12545 12546 sin = NULL;
12546 12547 }
12547 12548
12548 12549 err = (*ipip->ipi_func_restart)(ipsq->ipsq_xop->ipx_current_ipif, sin,
12549 12550 q, mp, ipip, mp1->b_rptr);
12550 12551
12551 12552 DTRACE_PROBE4(ipif__ioctl, char *, "ip_reprocess_ioctl finish",
12552 12553 int, ipip->ipi_cmd,
12553 12554 ill_t *, ipsq->ipsq_xop->ipx_current_ipif->ipif_ill,
12554 12555 ipif_t *, ipsq->ipsq_xop->ipx_current_ipif);
12555 12556
12556 12557 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), ipsq);
12557 12558 }
12558 12559
12559 12560 /*
12560 12561 * ioctl processing
12561 12562 *
12562 12563 * ioctl processing starts with ip_sioctl_copyin_setup(), which looks up
12563 12564 * the ioctl command in the ioctl tables, determines the copyin data size
12564 12565 * from the ipi_copyin_size field, and does an mi_copyin() of that size.
12565 12566 *
12566 12567 * ioctl processing then continues when the M_IOCDATA makes its way down to
12567 12568 * ip_wput_nondata(). The ioctl is looked up again in the ioctl table, its
12568 12569 * associated 'conn' is refheld till the end of the ioctl and the general
12569 12570 * ioctl processing function ip_process_ioctl() is called to extract the
12570 12571 * arguments and process the ioctl. To simplify extraction, ioctl commands
12571 12572 * are "typed" based on the arguments they take (e.g., LIF_CMD which takes a
12572 12573 * `struct lifreq'), and a common extract function (e.g., ip_extract_lifreq())
12573 12574 * is used to extract the ioctl's arguments.
12574 12575 *
12575 12576 * ip_process_ioctl determines if the ioctl needs to be serialized, and if
12576 12577 * so goes thru the serialization primitive ipsq_try_enter. Then the
12577 12578 * appropriate function to handle the ioctl is called based on the entry in
12578 12579 * the ioctl table. ioctl completion is encapsulated in ip_ioctl_finish
12579 12580 * which also refreleases the 'conn' that was refheld at the start of the
12580 12581 * ioctl. Finally ipsq_exit is called if needed to exit the ipsq.
12581 12582 *
12582 12583 * Many exclusive ioctls go thru an internal down up sequence as part of
12583 12584 * the operation. For example an attempt to change the IP address of an
12584 12585 * ipif entails ipif_down, set address, ipif_up. Bringing down the interface
12585 12586 * does all the cleanup such as deleting all ires that use this address.
12586 12587 * Then we need to wait till all references to the interface go away.
12587 12588 */
12588 12589 void
12589 12590 ip_process_ioctl(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *arg)
12590 12591 {
12591 12592 struct iocblk *iocp = (struct iocblk *)mp->b_rptr;
12592 12593 ip_ioctl_cmd_t *ipip = arg;
12593 12594 ip_extract_func_t *extract_funcp;
12594 12595 cmd_info_t ci;
12595 12596 int err;
12596 12597 boolean_t entered_ipsq = B_FALSE;
12597 12598
12598 12599 ip3dbg(("ip_process_ioctl: ioctl %X\n", iocp->ioc_cmd));
12599 12600
12600 12601 if (ipip == NULL)
12601 12602 ipip = ip_sioctl_lookup(iocp->ioc_cmd);
12602 12603
12603 12604 /*
12604 12605 * SIOCLIFADDIF needs to go thru a special path since the
12605 12606 * ill may not exist yet. This happens in the case of lo0
12606 12607 * which is created using this ioctl.
12607 12608 */
12608 12609 if (ipip->ipi_cmd == SIOCLIFADDIF) {
12609 12610 err = ip_sioctl_addif(NULL, NULL, q, mp, NULL, NULL);
12610 12611 DTRACE_PROBE4(ipif__ioctl, char *, "ip_process_ioctl finish",
12611 12612 int, ipip->ipi_cmd, ill_t *, NULL, ipif_t *, NULL);
12612 12613 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), NULL);
12613 12614 return;
12614 12615 }
12615 12616
12616 12617 ci.ci_ipif = NULL;
12617 12618 extract_funcp = NULL;
12618 12619 switch (ipip->ipi_cmd_type) {
12619 12620 case MISC_CMD:
12620 12621 case MSFILT_CMD:
12621 12622 /*
12622 12623 * All MISC_CMD ioctls come in here -- e.g. SIOCGLIFCONF.
12623 12624 */
12624 12625 if (ipip->ipi_cmd == IF_UNITSEL) {
12625 12626 /* ioctl comes down the ill */
12626 12627 ci.ci_ipif = ((ill_t *)q->q_ptr)->ill_ipif;
12627 12628 ipif_refhold(ci.ci_ipif);
12628 12629 }
12629 12630 err = 0;
12630 12631 ci.ci_sin = NULL;
12631 12632 ci.ci_sin6 = NULL;
12632 12633 ci.ci_lifr = NULL;
12633 12634 extract_funcp = NULL;
12634 12635 break;
12635 12636
12636 12637 case IF_CMD:
12637 12638 case LIF_CMD:
12638 12639 extract_funcp = ip_extract_lifreq;
12639 12640 break;
12640 12641
12641 12642 case ARP_CMD:
12642 12643 case XARP_CMD:
12643 12644 extract_funcp = ip_extract_arpreq;
12644 12645 break;
12645 12646
12646 12647 default:
12647 12648 ASSERT(0);
12648 12649 }
12649 12650
12650 12651 if (extract_funcp != NULL) {
12651 12652 err = (*extract_funcp)(q, mp, ipip, &ci);
12652 12653 if (err != 0) {
12653 12654 DTRACE_PROBE4(ipif__ioctl,
12654 12655 char *, "ip_process_ioctl finish err",
12655 12656 int, ipip->ipi_cmd, ill_t *, NULL, ipif_t *, NULL);
12656 12657 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), NULL);
12657 12658 return;
12658 12659 }
12659 12660
12660 12661 /*
12661 12662 * All of the extraction functions return a refheld ipif.
12662 12663 */
12663 12664 ASSERT(ci.ci_ipif != NULL);
12664 12665 }
12665 12666
12666 12667 if (!(ipip->ipi_flags & IPI_WR)) {
12667 12668 /*
12668 12669 * A return value of EINPROGRESS means the ioctl is
12669 12670 * either queued and waiting for some reason or has
12670 12671 * already completed.
12671 12672 */
12672 12673 err = (*ipip->ipi_func)(ci.ci_ipif, ci.ci_sin, q, mp, ipip,
12673 12674 ci.ci_lifr);
12674 12675 if (ci.ci_ipif != NULL) {
12675 12676 DTRACE_PROBE4(ipif__ioctl,
12676 12677 char *, "ip_process_ioctl finish RD",
12677 12678 int, ipip->ipi_cmd, ill_t *, ci.ci_ipif->ipif_ill,
12678 12679 ipif_t *, ci.ci_ipif);
12679 12680 ipif_refrele(ci.ci_ipif);
12680 12681 } else {
12681 12682 DTRACE_PROBE4(ipif__ioctl,
12682 12683 char *, "ip_process_ioctl finish RD",
12683 12684 int, ipip->ipi_cmd, ill_t *, NULL, ipif_t *, NULL);
12684 12685 }
12685 12686 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), NULL);
12686 12687 return;
12687 12688 }
12688 12689
12689 12690 ASSERT(ci.ci_ipif != NULL);
12690 12691
12691 12692 /*
12692 12693 * If ipsq is non-NULL, we are already being called exclusively
12693 12694 */
12694 12695 ASSERT(ipsq == NULL || IAM_WRITER_IPSQ(ipsq));
12695 12696 if (ipsq == NULL) {
12696 12697 ipsq = ipsq_try_enter(ci.ci_ipif, NULL, q, mp, ip_process_ioctl,
12697 12698 NEW_OP, B_TRUE);
12698 12699 if (ipsq == NULL) {
12699 12700 ipif_refrele(ci.ci_ipif);
12700 12701 return;
12701 12702 }
12702 12703 entered_ipsq = B_TRUE;
12703 12704 }
12704 12705 /*
12705 12706 * Release the ipif so that ipif_down and friends that wait for
12706 12707 * references to go away are not misled about the current ipif_refcnt
12707 12708 * values. We are writer so we can access the ipif even after releasing
12708 12709 * the ipif.
12709 12710 */
12710 12711 ipif_refrele(ci.ci_ipif);
12711 12712
12712 12713 ipsq_current_start(ipsq, ci.ci_ipif, ipip->ipi_cmd);
12713 12714
12714 12715 /*
12715 12716 * A return value of EINPROGRESS means the ioctl is
12716 12717 * either queued and waiting for some reason or has
12717 12718 * already completed.
12718 12719 */
12719 12720 err = (*ipip->ipi_func)(ci.ci_ipif, ci.ci_sin, q, mp, ipip, ci.ci_lifr);
12720 12721
12721 12722 DTRACE_PROBE4(ipif__ioctl, char *, "ip_process_ioctl finish WR",
12722 12723 int, ipip->ipi_cmd,
12723 12724 ill_t *, ci.ci_ipif == NULL ? NULL : ci.ci_ipif->ipif_ill,
12724 12725 ipif_t *, ci.ci_ipif);
12725 12726 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), ipsq);
12726 12727
12727 12728 if (entered_ipsq)
12728 12729 ipsq_exit(ipsq);
12729 12730 }
12730 12731
12731 12732 /*
12732 12733 * Complete the ioctl. Typically ioctls use the mi package and need to
12733 12734 * do mi_copyout/mi_copy_done.
12734 12735 */
12735 12736 void
12736 12737 ip_ioctl_finish(queue_t *q, mblk_t *mp, int err, int mode, ipsq_t *ipsq)
12737 12738 {
12738 12739 conn_t *connp = NULL;
12739 12740
12740 12741 if (err == EINPROGRESS)
12741 12742 return;
12742 12743
12743 12744 if (CONN_Q(q)) {
12744 12745 connp = Q_TO_CONN(q);
12745 12746 ASSERT(connp->conn_ref >= 2);
12746 12747 }
12747 12748
12748 12749 switch (mode) {
12749 12750 case COPYOUT:
12750 12751 if (err == 0)
12751 12752 mi_copyout(q, mp);
12752 12753 else
12753 12754 mi_copy_done(q, mp, err);
12754 12755 break;
12755 12756
12756 12757 case NO_COPYOUT:
12757 12758 mi_copy_done(q, mp, err);
12758 12759 break;
12759 12760
12760 12761 default:
12761 12762 ASSERT(mode == CONN_CLOSE); /* aborted through CONN_CLOSE */
12762 12763 break;
12763 12764 }
12764 12765
12765 12766 /*
12766 12767 * The conn refhold and ioctlref placed on the conn at the start of the
12767 12768 * ioctl are released here.
12768 12769 */
12769 12770 if (connp != NULL) {
12770 12771 CONN_DEC_IOCTLREF(connp);
12771 12772 CONN_OPER_PENDING_DONE(connp);
12772 12773 }
12773 12774
12774 12775 if (ipsq != NULL)
12775 12776 ipsq_current_finish(ipsq);
12776 12777 }
12777 12778
12778 12779 /* Handles all non data messages */
12779 12780 int
12780 12781 ip_wput_nondata(queue_t *q, mblk_t *mp)
12781 12782 {
12782 12783 mblk_t *mp1;
12783 12784 struct iocblk *iocp;
12784 12785 ip_ioctl_cmd_t *ipip;
12785 12786 conn_t *connp;
12786 12787 cred_t *cr;
12787 12788 char *proto_str;
12788 12789
12789 12790 if (CONN_Q(q))
12790 12791 connp = Q_TO_CONN(q);
12791 12792 else
12792 12793 connp = NULL;
12793 12794
12794 12795 iocp = NULL;
12795 12796 switch (DB_TYPE(mp)) {
12796 12797 case M_IOCTL:
12797 12798 /*
12798 12799 * IOCTL processing begins in ip_sioctl_copyin_setup which
12799 12800 * will arrange to copy in associated control structures.
12800 12801 */
12801 12802 ip_sioctl_copyin_setup(q, mp);
12802 12803 return (0);
12803 12804 case M_IOCDATA:
12804 12805 /*
12805 12806 * Ensure that this is associated with one of our trans-
12806 12807 * parent ioctls. If it's not ours, discard it if we're
12807 12808 * running as a driver, or pass it on if we're a module.
12808 12809 */
12809 12810 iocp = (struct iocblk *)mp->b_rptr;
12810 12811 ipip = ip_sioctl_lookup(iocp->ioc_cmd);
12811 12812 if (ipip == NULL) {
12812 12813 if (q->q_next == NULL) {
12813 12814 goto nak;
12814 12815 } else {
12815 12816 putnext(q, mp);
12816 12817 }
12817 12818 return (0);
12818 12819 }
12819 12820 if ((q->q_next != NULL) && !(ipip->ipi_flags & IPI_MODOK)) {
12820 12821 /*
12821 12822 * The ioctl is one we recognise, but is not consumed
12822 12823 * by IP as a module and we are a module, so we drop
12823 12824 */
12824 12825 goto nak;
12825 12826 }
12826 12827
12827 12828 /* IOCTL continuation following copyin or copyout. */
12828 12829 if (mi_copy_state(q, mp, NULL) == -1) {
12829 12830 /*
12830 12831 * The copy operation failed. mi_copy_state already
12831 12832 * cleaned up, so we're out of here.
12832 12833 */
12833 12834 return (0);
12834 12835 }
12835 12836 /*
12836 12837 * If we just completed a copy in, we become writer and
12837 12838 * continue processing in ip_sioctl_copyin_done. If it
12838 12839 * was a copy out, we call mi_copyout again. If there is
12839 12840 * nothing more to copy out, it will complete the IOCTL.
12840 12841 */
12841 12842 if (MI_COPY_DIRECTION(mp) == MI_COPY_IN) {
12842 12843 if (!(mp1 = mp->b_cont) || !(mp1 = mp1->b_cont)) {
12843 12844 mi_copy_done(q, mp, EPROTO);
12844 12845 return (0);
12845 12846 }
12846 12847 /*
12847 12848 * Check for cases that need more copying. A return
12848 12849 * value of 0 means a second copyin has been started,
12849 12850 * so we return; a return value of 1 means no more
12850 12851 * copying is needed, so we continue.
12851 12852 */
12852 12853 if (ipip->ipi_cmd_type == MSFILT_CMD &&
12853 12854 MI_COPY_COUNT(mp) == 1) {
12854 12855 if (ip_copyin_msfilter(q, mp) == 0)
12855 12856 return (0);
12856 12857 }
12857 12858 /*
12858 12859 * Refhold the conn, till the ioctl completes. This is
12859 12860 * needed in case the ioctl ends up in the pending mp
12860 12861 * list. Every mp in the ipx_pending_mp list must have
12861 12862 * a refhold on the conn to resume processing. The
12862 12863 * refhold is released when the ioctl completes
12863 12864 * (whether normally or abnormally). An ioctlref is also
12864 12865 * placed on the conn to prevent TCP from removing the
12865 12866 * queue needed to send the ioctl reply back.
12866 12867 * In all cases ip_ioctl_finish is called to finish
12867 12868 * the ioctl and release the refholds.
12868 12869 */
12869 12870 if (connp != NULL) {
12870 12871 /* This is not a reentry */
12871 12872 CONN_INC_REF(connp);
12872 12873 CONN_INC_IOCTLREF(connp);
12873 12874 } else {
12874 12875 if (!(ipip->ipi_flags & IPI_MODOK)) {
12875 12876 mi_copy_done(q, mp, EINVAL);
12876 12877 return (0);
12877 12878 }
12878 12879 }
12879 12880
12880 12881 ip_process_ioctl(NULL, q, mp, ipip);
12881 12882
12882 12883 } else {
12883 12884 mi_copyout(q, mp);
12884 12885 }
12885 12886 return (0);
12886 12887
12887 12888 case M_IOCNAK:
12888 12889 /*
12889 12890 * The only way we could get here is if a resolver didn't like
12890 12891 * an IOCTL we sent it. This shouldn't happen.
12891 12892 */
12892 12893 (void) mi_strlog(q, 1, SL_ERROR|SL_TRACE,
12893 12894 "ip_wput_nondata: unexpected M_IOCNAK, ioc_cmd 0x%x",
12894 12895 ((struct iocblk *)mp->b_rptr)->ioc_cmd);
12895 12896 freemsg(mp);
12896 12897 return (0);
12897 12898 case M_IOCACK:
12898 12899 /* /dev/ip shouldn't see this */
12899 12900 goto nak;
12900 12901 case M_FLUSH:
12901 12902 if (*mp->b_rptr & FLUSHW)
12902 12903 flushq(q, FLUSHALL);
12903 12904 if (q->q_next) {
12904 12905 putnext(q, mp);
12905 12906 return (0);
12906 12907 }
12907 12908 if (*mp->b_rptr & FLUSHR) {
12908 12909 *mp->b_rptr &= ~FLUSHW;
12909 12910 qreply(q, mp);
12910 12911 return (0);
12911 12912 }
12912 12913 freemsg(mp);
12913 12914 return (0);
12914 12915 case M_CTL:
12915 12916 break;
12916 12917 case M_PROTO:
12917 12918 case M_PCPROTO:
12918 12919 /*
12919 12920 * The only PROTO messages we expect are SNMP-related.
12920 12921 */
12921 12922 switch (((union T_primitives *)mp->b_rptr)->type) {
12922 12923 case T_SVR4_OPTMGMT_REQ:
12923 12924 ip2dbg(("ip_wput_nondata: T_SVR4_OPTMGMT_REQ "
12924 12925 "flags %x\n",
12925 12926 ((struct T_optmgmt_req *)mp->b_rptr)->MGMT_flags));
12926 12927
12927 12928 if (connp == NULL) {
12928 12929 proto_str = "T_SVR4_OPTMGMT_REQ";
12929 12930 goto protonak;
12930 12931 }
12931 12932
12932 12933 /*
12933 12934 * All Solaris components should pass a db_credp
12934 12935 * for this TPI message, hence we ASSERT.
12935 12936 * But in case there is some other M_PROTO that looks
12936 12937 * like a TPI message sent by some other kernel
12937 12938 * component, we check and return an error.
12938 12939 */
12939 12940 cr = msg_getcred(mp, NULL);
12940 12941 ASSERT(cr != NULL);
12941 12942 if (cr == NULL) {
12942 12943 mp = mi_tpi_err_ack_alloc(mp, TSYSERR, EINVAL);
12943 12944 if (mp != NULL)
12944 12945 qreply(q, mp);
12945 12946 return (0);
12946 12947 }
12947 12948
12948 12949 if (!snmpcom_req(q, mp, ip_snmp_set, ip_snmp_get, cr)) {
12949 12950 proto_str = "Bad SNMPCOM request?";
12950 12951 goto protonak;
12951 12952 }
12952 12953 return (0);
12953 12954 default:
12954 12955 ip1dbg(("ip_wput_nondata: dropping M_PROTO prim %u\n",
12955 12956 (int)*(uint_t *)mp->b_rptr));
12956 12957 freemsg(mp);
12957 12958 return (0);
12958 12959 }
12959 12960 default:
12960 12961 break;
12961 12962 }
12962 12963 if (q->q_next) {
12963 12964 putnext(q, mp);
12964 12965 } else
12965 12966 freemsg(mp);
12966 12967 return (0);
12967 12968
12968 12969 nak:
12969 12970 iocp->ioc_error = EINVAL;
12970 12971 mp->b_datap->db_type = M_IOCNAK;
12971 12972 iocp->ioc_count = 0;
12972 12973 qreply(q, mp);
12973 12974 return (0);
12974 12975
12975 12976 protonak:
12976 12977 cmn_err(CE_NOTE, "IP doesn't process %s as a module", proto_str);
12977 12978 if ((mp = mi_tpi_err_ack_alloc(mp, TPROTO, EINVAL)) != NULL)
12978 12979 qreply(q, mp);
12979 12980 return (0);
12980 12981 }
12981 12982
12982 12983 /*
12983 12984 * Process IP options in an outbound packet. Verify that the nexthop in a
12984 12985 * strict source route is onlink.
12985 12986 * Returns non-zero if something fails in which case an ICMP error has been
12986 12987 * sent and mp freed.
12987 12988 *
12988 12989 * Assumes the ULP has called ip_massage_options to move nexthop into ipha_dst.
12989 12990 */
12990 12991 int
12991 12992 ip_output_options(mblk_t *mp, ipha_t *ipha, ip_xmit_attr_t *ixa, ill_t *ill)
12992 12993 {
12993 12994 ipoptp_t opts;
12994 12995 uchar_t *opt;
12995 12996 uint8_t optval;
12996 12997 uint8_t optlen;
12997 12998 ipaddr_t dst;
12998 12999 intptr_t code = 0;
12999 13000 ire_t *ire;
13000 13001 ip_stack_t *ipst = ixa->ixa_ipst;
13001 13002 ip_recv_attr_t iras;
13002 13003
13003 13004 ip2dbg(("ip_output_options\n"));
13004 13005
13005 13006 opt = NULL;
13006 13007 dst = ipha->ipha_dst;
13007 13008 for (optval = ipoptp_first(&opts, ipha);
13008 13009 optval != IPOPT_EOL;
13009 13010 optval = ipoptp_next(&opts)) {
13010 13011 opt = opts.ipoptp_cur;
13011 13012 optlen = opts.ipoptp_len;
13012 13013 ip2dbg(("ip_output_options: opt %d, len %d\n",
13013 13014 optval, optlen));
13014 13015 switch (optval) {
13015 13016 uint32_t off;
13016 13017 case IPOPT_SSRR:
13017 13018 case IPOPT_LSRR:
13018 13019 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
13019 13020 ip1dbg((
13020 13021 "ip_output_options: bad option offset\n"));
13021 13022 code = (char *)&opt[IPOPT_OLEN] -
13022 13023 (char *)ipha;
13023 13024 goto param_prob;
13024 13025 }
13025 13026 off = opt[IPOPT_OFFSET];
13026 13027 ip1dbg(("ip_output_options: next hop 0x%x\n",
13027 13028 ntohl(dst)));
13028 13029 /*
13029 13030 * For strict: verify that dst is directly
13030 13031 * reachable.
13031 13032 */
13032 13033 if (optval == IPOPT_SSRR) {
13033 13034 ire = ire_ftable_lookup_v4(dst, 0, 0,
13034 13035 IRE_INTERFACE, NULL, ALL_ZONES,
13035 13036 ixa->ixa_tsl,
13036 13037 MATCH_IRE_TYPE | MATCH_IRE_SECATTR, 0, ipst,
13037 13038 NULL);
13038 13039 if (ire == NULL) {
13039 13040 ip1dbg(("ip_output_options: SSRR not"
13040 13041 " directly reachable: 0x%x\n",
13041 13042 ntohl(dst)));
13042 13043 goto bad_src_route;
13043 13044 }
13044 13045 ire_refrele(ire);
13045 13046 }
13046 13047 break;
13047 13048 case IPOPT_RR:
13048 13049 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
13049 13050 ip1dbg((
13050 13051 "ip_output_options: bad option offset\n"));
13051 13052 code = (char *)&opt[IPOPT_OLEN] -
13052 13053 (char *)ipha;
13053 13054 goto param_prob;
13054 13055 }
13055 13056 break;
13056 13057 case IPOPT_TS:
13057 13058 /*
13058 13059 * Verify that length >=5 and that there is either
13059 13060 * room for another timestamp or that the overflow
13060 13061 * counter is not maxed out.
13061 13062 */
13062 13063 code = (char *)&opt[IPOPT_OLEN] - (char *)ipha;
13063 13064 if (optlen < IPOPT_MINLEN_IT) {
13064 13065 goto param_prob;
13065 13066 }
13066 13067 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
13067 13068 ip1dbg((
13068 13069 "ip_output_options: bad option offset\n"));
13069 13070 code = (char *)&opt[IPOPT_OFFSET] -
13070 13071 (char *)ipha;
13071 13072 goto param_prob;
13072 13073 }
13073 13074 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
13074 13075 case IPOPT_TS_TSONLY:
13075 13076 off = IPOPT_TS_TIMELEN;
13076 13077 break;
13077 13078 case IPOPT_TS_TSANDADDR:
13078 13079 case IPOPT_TS_PRESPEC:
13079 13080 case IPOPT_TS_PRESPEC_RFC791:
13080 13081 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
13081 13082 break;
13082 13083 default:
13083 13084 code = (char *)&opt[IPOPT_POS_OV_FLG] -
13084 13085 (char *)ipha;
13085 13086 goto param_prob;
13086 13087 }
13087 13088 if (opt[IPOPT_OFFSET] - 1 + off > optlen &&
13088 13089 (opt[IPOPT_POS_OV_FLG] & 0xF0) == 0xF0) {
13089 13090 /*
13090 13091 * No room and the overflow counter is 15
13091 13092 * already.
13092 13093 */
13093 13094 goto param_prob;
13094 13095 }
13095 13096 break;
13096 13097 }
13097 13098 }
13098 13099
13099 13100 if ((opts.ipoptp_flags & IPOPTP_ERROR) == 0)
13100 13101 return (0);
13101 13102
13102 13103 ip1dbg(("ip_output_options: error processing IP options."));
13103 13104 code = (char *)&opt[IPOPT_OFFSET] - (char *)ipha;
13104 13105
13105 13106 param_prob:
13106 13107 bzero(&iras, sizeof (iras));
13107 13108 iras.ira_ill = iras.ira_rill = ill;
13108 13109 iras.ira_ruifindex = ill->ill_phyint->phyint_ifindex;
13109 13110 iras.ira_rifindex = iras.ira_ruifindex;
13110 13111 iras.ira_flags = IRAF_IS_IPV4;
13111 13112
13112 13113 ip_drop_output("ip_output_options", mp, ill);
13113 13114 icmp_param_problem(mp, (uint8_t)code, &iras);
13114 13115 ASSERT(!(iras.ira_flags & IRAF_IPSEC_SECURE));
13115 13116 return (-1);
13116 13117
13117 13118 bad_src_route:
13118 13119 bzero(&iras, sizeof (iras));
13119 13120 iras.ira_ill = iras.ira_rill = ill;
13120 13121 iras.ira_ruifindex = ill->ill_phyint->phyint_ifindex;
13121 13122 iras.ira_rifindex = iras.ira_ruifindex;
13122 13123 iras.ira_flags = IRAF_IS_IPV4;
13123 13124
13124 13125 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED", mp, ill);
13125 13126 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED, &iras);
13126 13127 ASSERT(!(iras.ira_flags & IRAF_IPSEC_SECURE));
13127 13128 return (-1);
13128 13129 }
13129 13130
13130 13131 /*
13131 13132 * The maximum value of conn_drain_list_cnt is CONN_MAXDRAINCNT.
13132 13133 * conn_drain_list_cnt can be changed by setting conn_drain_nthreads
13133 13134 * thru /etc/system.
13134 13135 */
13135 13136 #define CONN_MAXDRAINCNT 64
13136 13137
13137 13138 static void
13138 13139 conn_drain_init(ip_stack_t *ipst)
13139 13140 {
13140 13141 int i, j;
13141 13142 idl_tx_list_t *itl_tx;
13142 13143
13143 13144 ipst->ips_conn_drain_list_cnt = conn_drain_nthreads;
13144 13145
13145 13146 if ((ipst->ips_conn_drain_list_cnt == 0) ||
13146 13147 (ipst->ips_conn_drain_list_cnt > CONN_MAXDRAINCNT)) {
13147 13148 /*
13148 13149 * Default value of the number of drainers is the
13149 13150 * number of cpus, subject to maximum of 8 drainers.
13150 13151 */
13151 13152 if (boot_max_ncpus != -1)
13152 13153 ipst->ips_conn_drain_list_cnt = MIN(boot_max_ncpus, 8);
13153 13154 else
13154 13155 ipst->ips_conn_drain_list_cnt = MIN(max_ncpus, 8);
13155 13156 }
13156 13157
13157 13158 ipst->ips_idl_tx_list =
13158 13159 kmem_zalloc(TX_FANOUT_SIZE * sizeof (idl_tx_list_t), KM_SLEEP);
13159 13160 for (i = 0; i < TX_FANOUT_SIZE; i++) {
13160 13161 itl_tx = &ipst->ips_idl_tx_list[i];
13161 13162 itl_tx->txl_drain_list =
13162 13163 kmem_zalloc(ipst->ips_conn_drain_list_cnt *
13163 13164 sizeof (idl_t), KM_SLEEP);
13164 13165 mutex_init(&itl_tx->txl_lock, NULL, MUTEX_DEFAULT, NULL);
13165 13166 for (j = 0; j < ipst->ips_conn_drain_list_cnt; j++) {
13166 13167 mutex_init(&itl_tx->txl_drain_list[j].idl_lock, NULL,
13167 13168 MUTEX_DEFAULT, NULL);
13168 13169 itl_tx->txl_drain_list[j].idl_itl = itl_tx;
13169 13170 }
13170 13171 }
13171 13172 }
13172 13173
13173 13174 static void
13174 13175 conn_drain_fini(ip_stack_t *ipst)
13175 13176 {
13176 13177 int i;
13177 13178 idl_tx_list_t *itl_tx;
13178 13179
13179 13180 for (i = 0; i < TX_FANOUT_SIZE; i++) {
13180 13181 itl_tx = &ipst->ips_idl_tx_list[i];
13181 13182 kmem_free(itl_tx->txl_drain_list,
13182 13183 ipst->ips_conn_drain_list_cnt * sizeof (idl_t));
13183 13184 }
13184 13185 kmem_free(ipst->ips_idl_tx_list,
13185 13186 TX_FANOUT_SIZE * sizeof (idl_tx_list_t));
13186 13187 ipst->ips_idl_tx_list = NULL;
13187 13188 }
13188 13189
13189 13190 /*
13190 13191 * Flow control has blocked us from proceeding. Insert the given conn in one
13191 13192 * of the conn drain lists. When flow control is unblocked, either ip_wsrv()
13192 13193 * (STREAMS) or ill_flow_enable() (direct) will be called back, which in turn
13193 13194 * will call conn_walk_drain(). See the flow control notes at the top of this
13194 13195 * file for more details.
13195 13196 */
13196 13197 void
13197 13198 conn_drain_insert(conn_t *connp, idl_tx_list_t *tx_list)
13198 13199 {
13199 13200 idl_t *idl = tx_list->txl_drain_list;
13200 13201 uint_t index;
13201 13202 ip_stack_t *ipst = connp->conn_netstack->netstack_ip;
13202 13203
13203 13204 mutex_enter(&connp->conn_lock);
13204 13205 if (connp->conn_state_flags & CONN_CLOSING) {
13205 13206 /*
13206 13207 * The conn is closing as a result of which CONN_CLOSING
13207 13208 * is set. Return.
13208 13209 */
13209 13210 mutex_exit(&connp->conn_lock);
13210 13211 return;
13211 13212 } else if (connp->conn_idl == NULL) {
13212 13213 /*
13213 13214 * Assign the next drain list round robin. We dont' use
13214 13215 * a lock, and thus it may not be strictly round robin.
13215 13216 * Atomicity of load/stores is enough to make sure that
13216 13217 * conn_drain_list_index is always within bounds.
13217 13218 */
13218 13219 index = tx_list->txl_drain_index;
13219 13220 ASSERT(index < ipst->ips_conn_drain_list_cnt);
13220 13221 connp->conn_idl = &tx_list->txl_drain_list[index];
13221 13222 index++;
13222 13223 if (index == ipst->ips_conn_drain_list_cnt)
13223 13224 index = 0;
13224 13225 tx_list->txl_drain_index = index;
13225 13226 } else {
13226 13227 ASSERT(connp->conn_idl->idl_itl == tx_list);
13227 13228 }
13228 13229 mutex_exit(&connp->conn_lock);
13229 13230
13230 13231 idl = connp->conn_idl;
13231 13232 mutex_enter(&idl->idl_lock);
13232 13233 if ((connp->conn_drain_prev != NULL) ||
13233 13234 (connp->conn_state_flags & CONN_CLOSING)) {
13234 13235 /*
13235 13236 * The conn is either already in the drain list or closing.
13236 13237 * (We needed to check for CONN_CLOSING again since close can
13237 13238 * sneak in between dropping conn_lock and acquiring idl_lock.)
13238 13239 */
13239 13240 mutex_exit(&idl->idl_lock);
13240 13241 return;
13241 13242 }
13242 13243
13243 13244 /*
13244 13245 * The conn is not in the drain list. Insert it at the
13245 13246 * tail of the drain list. The drain list is circular
13246 13247 * and doubly linked. idl_conn points to the 1st element
13247 13248 * in the list.
13248 13249 */
13249 13250 if (idl->idl_conn == NULL) {
13250 13251 idl->idl_conn = connp;
13251 13252 connp->conn_drain_next = connp;
13252 13253 connp->conn_drain_prev = connp;
13253 13254 } else {
13254 13255 conn_t *head = idl->idl_conn;
13255 13256
13256 13257 connp->conn_drain_next = head;
13257 13258 connp->conn_drain_prev = head->conn_drain_prev;
13258 13259 head->conn_drain_prev->conn_drain_next = connp;
13259 13260 head->conn_drain_prev = connp;
13260 13261 }
13261 13262 /*
13262 13263 * For non streams based sockets assert flow control.
13263 13264 */
13264 13265 conn_setqfull(connp, NULL);
13265 13266 mutex_exit(&idl->idl_lock);
13266 13267 }
13267 13268
13268 13269 static void
13269 13270 conn_drain_remove(conn_t *connp)
13270 13271 {
13271 13272 idl_t *idl = connp->conn_idl;
13272 13273
13273 13274 if (idl != NULL) {
13274 13275 /*
13275 13276 * Remove ourself from the drain list.
13276 13277 */
13277 13278 if (connp->conn_drain_next == connp) {
13278 13279 /* Singleton in the list */
13279 13280 ASSERT(connp->conn_drain_prev == connp);
13280 13281 idl->idl_conn = NULL;
13281 13282 } else {
13282 13283 connp->conn_drain_prev->conn_drain_next =
13283 13284 connp->conn_drain_next;
13284 13285 connp->conn_drain_next->conn_drain_prev =
13285 13286 connp->conn_drain_prev;
13286 13287 if (idl->idl_conn == connp)
13287 13288 idl->idl_conn = connp->conn_drain_next;
13288 13289 }
13289 13290
13290 13291 /*
13291 13292 * NOTE: because conn_idl is associated with a specific drain
13292 13293 * list which in turn is tied to the index the TX ring
13293 13294 * (txl_cookie) hashes to, and because the TX ring can change
13294 13295 * over the lifetime of the conn_t, we must clear conn_idl so
13295 13296 * a subsequent conn_drain_insert() will set conn_idl again
13296 13297 * based on the latest txl_cookie.
13297 13298 */
13298 13299 connp->conn_idl = NULL;
13299 13300 }
13300 13301 connp->conn_drain_next = NULL;
13301 13302 connp->conn_drain_prev = NULL;
13302 13303
13303 13304 conn_clrqfull(connp, NULL);
13304 13305 /*
13305 13306 * For streams based sockets open up flow control.
13306 13307 */
13307 13308 if (!IPCL_IS_NONSTR(connp))
13308 13309 enableok(connp->conn_wq);
13309 13310 }
13310 13311
13311 13312 /*
13312 13313 * This conn is closing, and we are called from ip_close. OR
13313 13314 * this conn is draining because flow-control on the ill has been relieved.
13314 13315 *
13315 13316 * We must also need to remove conn's on this idl from the list, and also
13316 13317 * inform the sockfs upcalls about the change in flow-control.
13317 13318 */
13318 13319 static void
13319 13320 conn_drain(conn_t *connp, boolean_t closing)
13320 13321 {
13321 13322 idl_t *idl;
13322 13323 conn_t *next_connp;
13323 13324
13324 13325 /*
13325 13326 * connp->conn_idl is stable at this point, and no lock is needed
13326 13327 * to check it. If we are called from ip_close, close has already
13327 13328 * set CONN_CLOSING, thus freezing the value of conn_idl, and
13328 13329 * called us only because conn_idl is non-null. If we are called thru
13329 13330 * service, conn_idl could be null, but it cannot change because
13330 13331 * service is single-threaded per queue, and there cannot be another
13331 13332 * instance of service trying to call conn_drain_insert on this conn
13332 13333 * now.
13333 13334 */
13334 13335 ASSERT(!closing || connp == NULL || connp->conn_idl != NULL);
13335 13336
13336 13337 /*
13337 13338 * If the conn doesn't exist or is not on a drain list, bail.
13338 13339 */
13339 13340 if (connp == NULL || connp->conn_idl == NULL ||
13340 13341 connp->conn_drain_prev == NULL) {
13341 13342 return;
13342 13343 }
13343 13344
13344 13345 idl = connp->conn_idl;
13345 13346 ASSERT(MUTEX_HELD(&idl->idl_lock));
13346 13347
13347 13348 if (!closing) {
13348 13349 next_connp = connp->conn_drain_next;
13349 13350 while (next_connp != connp) {
13350 13351 conn_t *delconnp = next_connp;
13351 13352
13352 13353 next_connp = next_connp->conn_drain_next;
13353 13354 conn_drain_remove(delconnp);
13354 13355 }
13355 13356 ASSERT(connp->conn_drain_next == idl->idl_conn);
13356 13357 }
13357 13358 conn_drain_remove(connp);
13358 13359 }
13359 13360
13360 13361 /*
13361 13362 * Write service routine. Shared perimeter entry point.
13362 13363 * The device queue's messages has fallen below the low water mark and STREAMS
13363 13364 * has backenabled the ill_wq. Send sockfs notification about flow-control on
13364 13365 * each waiting conn.
13365 13366 */
13366 13367 int
13367 13368 ip_wsrv(queue_t *q)
13368 13369 {
13369 13370 ill_t *ill;
13370 13371
13371 13372 ill = (ill_t *)q->q_ptr;
13372 13373 if (ill->ill_state_flags == 0) {
13373 13374 ip_stack_t *ipst = ill->ill_ipst;
13374 13375
13375 13376 /*
13376 13377 * The device flow control has opened up.
13377 13378 * Walk through conn drain lists and qenable the
13378 13379 * first conn in each list. This makes sense only
13379 13380 * if the stream is fully plumbed and setup.
13380 13381 * Hence the ill_state_flags check above.
13381 13382 */
13382 13383 ip1dbg(("ip_wsrv: walking\n"));
13383 13384 conn_walk_drain(ipst, &ipst->ips_idl_tx_list[0]);
13384 13385 enableok(ill->ill_wq);
13385 13386 }
13386 13387 return (0);
13387 13388 }
13388 13389
13389 13390 /*
13390 13391 * Callback to disable flow control in IP.
13391 13392 *
13392 13393 * This is a mac client callback added when the DLD_CAPAB_DIRECT capability
13393 13394 * is enabled.
13394 13395 *
13395 13396 * When MAC_TX() is not able to send any more packets, dld sets its queue
13396 13397 * to QFULL and enable the STREAMS flow control. Later, when the underlying
13397 13398 * driver is able to continue to send packets, it calls mac_tx_(ring_)update()
13398 13399 * function and wakes up corresponding mac worker threads, which in turn
13399 13400 * calls this callback function, and disables flow control.
13400 13401 */
13401 13402 void
13402 13403 ill_flow_enable(void *arg, ip_mac_tx_cookie_t cookie)
13403 13404 {
13404 13405 ill_t *ill = (ill_t *)arg;
13405 13406 ip_stack_t *ipst = ill->ill_ipst;
13406 13407 idl_tx_list_t *idl_txl;
13407 13408
13408 13409 idl_txl = &ipst->ips_idl_tx_list[IDLHASHINDEX(cookie)];
13409 13410 mutex_enter(&idl_txl->txl_lock);
13410 13411 /* add code to to set a flag to indicate idl_txl is enabled */
13411 13412 conn_walk_drain(ipst, idl_txl);
13412 13413 mutex_exit(&idl_txl->txl_lock);
13413 13414 }
13414 13415
13415 13416 /*
13416 13417 * Flow control has been relieved and STREAMS has backenabled us; drain
13417 13418 * all the conn lists on `tx_list'.
13418 13419 */
13419 13420 static void
13420 13421 conn_walk_drain(ip_stack_t *ipst, idl_tx_list_t *tx_list)
13421 13422 {
13422 13423 int i;
13423 13424 idl_t *idl;
13424 13425
13425 13426 IP_STAT(ipst, ip_conn_walk_drain);
13426 13427
13427 13428 for (i = 0; i < ipst->ips_conn_drain_list_cnt; i++) {
13428 13429 idl = &tx_list->txl_drain_list[i];
13429 13430 mutex_enter(&idl->idl_lock);
13430 13431 conn_drain(idl->idl_conn, B_FALSE);
13431 13432 mutex_exit(&idl->idl_lock);
13432 13433 }
13433 13434 }
13434 13435
13435 13436 /*
13436 13437 * Determine if the ill and multicast aspects of that packets
13437 13438 * "matches" the conn.
13438 13439 */
13439 13440 boolean_t
13440 13441 conn_wantpacket(conn_t *connp, ip_recv_attr_t *ira, ipha_t *ipha)
13441 13442 {
13442 13443 ill_t *ill = ira->ira_rill;
13443 13444 zoneid_t zoneid = ira->ira_zoneid;
13444 13445 uint_t in_ifindex;
13445 13446 ipaddr_t dst, src;
13446 13447
13447 13448 dst = ipha->ipha_dst;
13448 13449 src = ipha->ipha_src;
13449 13450
13450 13451 /*
13451 13452 * conn_incoming_ifindex is set by IP_BOUND_IF which limits
13452 13453 * unicast, broadcast and multicast reception to
13453 13454 * conn_incoming_ifindex.
13454 13455 * conn_wantpacket is called for unicast, broadcast and
13455 13456 * multicast packets.
13456 13457 */
13457 13458 in_ifindex = connp->conn_incoming_ifindex;
13458 13459
13459 13460 /* mpathd can bind to the under IPMP interface, which we allow */
13460 13461 if (in_ifindex != 0 && in_ifindex != ill->ill_phyint->phyint_ifindex) {
13461 13462 if (!IS_UNDER_IPMP(ill))
13462 13463 return (B_FALSE);
13463 13464
13464 13465 if (in_ifindex != ipmp_ill_get_ipmp_ifindex(ill))
13465 13466 return (B_FALSE);
13466 13467 }
13467 13468
13468 13469 if (!IPCL_ZONE_MATCH(connp, zoneid))
13469 13470 return (B_FALSE);
13470 13471
13471 13472 if (!(ira->ira_flags & IRAF_MULTICAST))
13472 13473 return (B_TRUE);
13473 13474
13474 13475 if (connp->conn_multi_router) {
13475 13476 /* multicast packet and multicast router socket: send up */
13476 13477 return (B_TRUE);
13477 13478 }
13478 13479
13479 13480 if (ipha->ipha_protocol == IPPROTO_PIM ||
13480 13481 ipha->ipha_protocol == IPPROTO_RSVP)
13481 13482 return (B_TRUE);
13482 13483
13483 13484 return (conn_hasmembers_ill_withsrc_v4(connp, dst, src, ira->ira_ill));
13484 13485 }
13485 13486
13486 13487 void
13487 13488 conn_setqfull(conn_t *connp, boolean_t *flow_stopped)
13488 13489 {
13489 13490 if (IPCL_IS_NONSTR(connp)) {
13490 13491 (*connp->conn_upcalls->su_txq_full)
13491 13492 (connp->conn_upper_handle, B_TRUE);
13492 13493 if (flow_stopped != NULL)
13493 13494 *flow_stopped = B_TRUE;
13494 13495 } else {
13495 13496 queue_t *q = connp->conn_wq;
13496 13497
13497 13498 ASSERT(q != NULL);
13498 13499 if (!(q->q_flag & QFULL)) {
13499 13500 mutex_enter(QLOCK(q));
13500 13501 if (!(q->q_flag & QFULL)) {
13501 13502 /* still need to set QFULL */
13502 13503 q->q_flag |= QFULL;
13503 13504 /* set flow_stopped to true under QLOCK */
13504 13505 if (flow_stopped != NULL)
13505 13506 *flow_stopped = B_TRUE;
13506 13507 mutex_exit(QLOCK(q));
13507 13508 } else {
13508 13509 /* flow_stopped is left unchanged */
13509 13510 mutex_exit(QLOCK(q));
13510 13511 }
13511 13512 }
13512 13513 }
13513 13514 }
13514 13515
13515 13516 void
13516 13517 conn_clrqfull(conn_t *connp, boolean_t *flow_stopped)
13517 13518 {
13518 13519 if (IPCL_IS_NONSTR(connp)) {
13519 13520 (*connp->conn_upcalls->su_txq_full)
13520 13521 (connp->conn_upper_handle, B_FALSE);
13521 13522 if (flow_stopped != NULL)
13522 13523 *flow_stopped = B_FALSE;
13523 13524 } else {
13524 13525 queue_t *q = connp->conn_wq;
13525 13526
13526 13527 ASSERT(q != NULL);
13527 13528 if (q->q_flag & QFULL) {
13528 13529 mutex_enter(QLOCK(q));
13529 13530 if (q->q_flag & QFULL) {
13530 13531 q->q_flag &= ~QFULL;
13531 13532 /* set flow_stopped to false under QLOCK */
13532 13533 if (flow_stopped != NULL)
13533 13534 *flow_stopped = B_FALSE;
13534 13535 mutex_exit(QLOCK(q));
13535 13536 if (q->q_flag & QWANTW)
13536 13537 qbackenable(q, 0);
13537 13538 } else {
13538 13539 /* flow_stopped is left unchanged */
13539 13540 mutex_exit(QLOCK(q));
13540 13541 }
13541 13542 }
13542 13543 }
13543 13544
13544 13545 mutex_enter(&connp->conn_lock);
13545 13546 connp->conn_blocked = B_FALSE;
13546 13547 mutex_exit(&connp->conn_lock);
13547 13548 }
13548 13549
13549 13550 /*
13550 13551 * Return the length in bytes of the IPv4 headers (base header, label, and
13551 13552 * other IP options) that will be needed based on the
13552 13553 * ip_pkt_t structure passed by the caller.
13553 13554 *
13554 13555 * The returned length does not include the length of the upper level
13555 13556 * protocol (ULP) header.
13556 13557 * The caller needs to check that the length doesn't exceed the max for IPv4.
13557 13558 */
13558 13559 int
13559 13560 ip_total_hdrs_len_v4(const ip_pkt_t *ipp)
13560 13561 {
13561 13562 int len;
13562 13563
13563 13564 len = IP_SIMPLE_HDR_LENGTH;
13564 13565 if (ipp->ipp_fields & IPPF_LABEL_V4) {
13565 13566 ASSERT(ipp->ipp_label_len_v4 != 0);
13566 13567 /* We need to round up here */
13567 13568 len += (ipp->ipp_label_len_v4 + 3) & ~3;
13568 13569 }
13569 13570
13570 13571 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
13571 13572 ASSERT(ipp->ipp_ipv4_options_len != 0);
13572 13573 ASSERT((ipp->ipp_ipv4_options_len & 3) == 0);
13573 13574 len += ipp->ipp_ipv4_options_len;
13574 13575 }
13575 13576 return (len);
13576 13577 }
13577 13578
13578 13579 /*
13579 13580 * All-purpose routine to build an IPv4 header with options based
13580 13581 * on the abstract ip_pkt_t.
13581 13582 *
13582 13583 * The caller has to set the source and destination address as well as
13583 13584 * ipha_length. The caller has to massage any source route and compensate
13584 13585 * for the ULP pseudo-header checksum due to the source route.
13585 13586 */
13586 13587 void
13587 13588 ip_build_hdrs_v4(uchar_t *buf, uint_t buf_len, const ip_pkt_t *ipp,
13588 13589 uint8_t protocol)
13589 13590 {
13590 13591 ipha_t *ipha = (ipha_t *)buf;
13591 13592 uint8_t *cp;
13592 13593
13593 13594 /* Initialize IPv4 header */
13594 13595 ipha->ipha_type_of_service = ipp->ipp_type_of_service;
13595 13596 ipha->ipha_length = 0; /* Caller will set later */
13596 13597 ipha->ipha_ident = 0;
13597 13598 ipha->ipha_fragment_offset_and_flags = 0;
13598 13599 ipha->ipha_ttl = ipp->ipp_unicast_hops;
13599 13600 ipha->ipha_protocol = protocol;
13600 13601 ipha->ipha_hdr_checksum = 0;
13601 13602
13602 13603 if ((ipp->ipp_fields & IPPF_ADDR) &&
13603 13604 IN6_IS_ADDR_V4MAPPED(&ipp->ipp_addr))
13604 13605 ipha->ipha_src = ipp->ipp_addr_v4;
13605 13606
13606 13607 cp = (uint8_t *)&ipha[1];
13607 13608 if (ipp->ipp_fields & IPPF_LABEL_V4) {
13608 13609 ASSERT(ipp->ipp_label_len_v4 != 0);
13609 13610 bcopy(ipp->ipp_label_v4, cp, ipp->ipp_label_len_v4);
13610 13611 cp += ipp->ipp_label_len_v4;
13611 13612 /* We need to round up here */
13612 13613 while ((uintptr_t)cp & 0x3) {
13613 13614 *cp++ = IPOPT_NOP;
13614 13615 }
13615 13616 }
13616 13617
13617 13618 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
13618 13619 ASSERT(ipp->ipp_ipv4_options_len != 0);
13619 13620 ASSERT((ipp->ipp_ipv4_options_len & 3) == 0);
13620 13621 bcopy(ipp->ipp_ipv4_options, cp, ipp->ipp_ipv4_options_len);
13621 13622 cp += ipp->ipp_ipv4_options_len;
13622 13623 }
13623 13624 ipha->ipha_version_and_hdr_length =
13624 13625 (uint8_t)((IP_VERSION << 4) + buf_len / 4);
13625 13626
13626 13627 ASSERT((int)(cp - buf) == buf_len);
13627 13628 }
13628 13629
13629 13630 /* Allocate the private structure */
13630 13631 static int
13631 13632 ip_priv_alloc(void **bufp)
13632 13633 {
13633 13634 void *buf;
13634 13635
13635 13636 if ((buf = kmem_alloc(sizeof (ip_priv_t), KM_NOSLEEP)) == NULL)
13636 13637 return (ENOMEM);
13637 13638
13638 13639 *bufp = buf;
13639 13640 return (0);
13640 13641 }
13641 13642
13642 13643 /* Function to delete the private structure */
13643 13644 void
13644 13645 ip_priv_free(void *buf)
13645 13646 {
13646 13647 ASSERT(buf != NULL);
13647 13648 kmem_free(buf, sizeof (ip_priv_t));
13648 13649 }
13649 13650
13650 13651 /*
13651 13652 * The entry point for IPPF processing.
13652 13653 * If the classifier (IPGPC_CLASSIFY) is not loaded and configured, the
13653 13654 * routine just returns.
13654 13655 *
13655 13656 * When called, ip_process generates an ipp_packet_t structure
13656 13657 * which holds the state information for this packet and invokes the
13657 13658 * the classifier (via ipp_packet_process). The classification, depending on
13658 13659 * configured filters, results in a list of actions for this packet. Invoking
13659 13660 * an action may cause the packet to be dropped, in which case we return NULL.
13660 13661 * proc indicates the callout position for
13661 13662 * this packet and ill is the interface this packet arrived on or will leave
13662 13663 * on (inbound and outbound resp.).
13663 13664 *
13664 13665 * We do the processing on the rill (mapped to the upper if ipmp), but MIB
13665 13666 * on the ill corrsponding to the destination IP address.
13666 13667 */
13667 13668 mblk_t *
13668 13669 ip_process(ip_proc_t proc, mblk_t *mp, ill_t *rill, ill_t *ill)
13669 13670 {
13670 13671 ip_priv_t *priv;
13671 13672 ipp_action_id_t aid;
13672 13673 int rc = 0;
13673 13674 ipp_packet_t *pp;
13674 13675
13675 13676 /* If the classifier is not loaded, return */
13676 13677 if ((aid = ipp_action_lookup(IPGPC_CLASSIFY)) == IPP_ACTION_INVAL) {
13677 13678 return (mp);
13678 13679 }
13679 13680
13680 13681 ASSERT(mp != NULL);
13681 13682
13682 13683 /* Allocate the packet structure */
13683 13684 rc = ipp_packet_alloc(&pp, "ip", aid);
13684 13685 if (rc != 0)
13685 13686 goto drop;
13686 13687
13687 13688 /* Allocate the private structure */
13688 13689 rc = ip_priv_alloc((void **)&priv);
13689 13690 if (rc != 0) {
13690 13691 ipp_packet_free(pp);
13691 13692 goto drop;
13692 13693 }
13693 13694 priv->proc = proc;
13694 13695 priv->ill_index = ill_get_upper_ifindex(rill);
13695 13696
13696 13697 ipp_packet_set_private(pp, priv, ip_priv_free);
13697 13698 ipp_packet_set_data(pp, mp);
13698 13699
13699 13700 /* Invoke the classifier */
13700 13701 rc = ipp_packet_process(&pp);
13701 13702 if (pp != NULL) {
13702 13703 mp = ipp_packet_get_data(pp);
13703 13704 ipp_packet_free(pp);
13704 13705 if (rc != 0)
13705 13706 goto drop;
13706 13707 return (mp);
13707 13708 } else {
13708 13709 /* No mp to trace in ip_drop_input/ip_drop_output */
13709 13710 mp = NULL;
13710 13711 }
13711 13712 drop:
13712 13713 if (proc == IPP_LOCAL_IN || proc == IPP_FWD_IN) {
13713 13714 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
13714 13715 ip_drop_input("ip_process", mp, ill);
13715 13716 } else {
13716 13717 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
13717 13718 ip_drop_output("ip_process", mp, ill);
13718 13719 }
13719 13720 freemsg(mp);
13720 13721 return (NULL);
13721 13722 }
13722 13723
13723 13724 /*
13724 13725 * Propagate a multicast group membership operation (add/drop) on
13725 13726 * all the interfaces crossed by the related multirt routes.
13726 13727 * The call is considered successful if the operation succeeds
13727 13728 * on at least one interface.
13728 13729 *
13729 13730 * This assumes that a set of IRE_HOST/RTF_MULTIRT has been created for the
13730 13731 * multicast addresses with the ire argument being the first one.
13731 13732 * We walk the bucket to find all the of those.
13732 13733 *
13733 13734 * Common to IPv4 and IPv6.
13734 13735 */
13735 13736 static int
13736 13737 ip_multirt_apply_membership(int (*fn)(conn_t *, boolean_t,
13737 13738 const in6_addr_t *, ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *),
13738 13739 ire_t *ire, conn_t *connp, boolean_t checkonly, const in6_addr_t *v6group,
13739 13740 mcast_record_t fmode, const in6_addr_t *v6src)
13740 13741 {
13741 13742 ire_t *ire_gw;
13742 13743 irb_t *irb;
13743 13744 int ifindex;
13744 13745 int error = 0;
13745 13746 int result;
13746 13747 ip_stack_t *ipst = ire->ire_ipst;
13747 13748 ipaddr_t group;
13748 13749 boolean_t isv6;
13749 13750 int match_flags;
13750 13751
13751 13752 if (IN6_IS_ADDR_V4MAPPED(v6group)) {
13752 13753 IN6_V4MAPPED_TO_IPADDR(v6group, group);
13753 13754 isv6 = B_FALSE;
13754 13755 } else {
13755 13756 isv6 = B_TRUE;
13756 13757 }
13757 13758
13758 13759 irb = ire->ire_bucket;
13759 13760 ASSERT(irb != NULL);
13760 13761
13761 13762 result = 0;
13762 13763 irb_refhold(irb);
13763 13764 for (; ire != NULL; ire = ire->ire_next) {
13764 13765 if ((ire->ire_flags & RTF_MULTIRT) == 0)
13765 13766 continue;
13766 13767
13767 13768 /* We handle -ifp routes by matching on the ill if set */
13768 13769 match_flags = MATCH_IRE_TYPE;
13769 13770 if (ire->ire_ill != NULL)
13770 13771 match_flags |= MATCH_IRE_ILL;
13771 13772
13772 13773 if (isv6) {
13773 13774 if (!IN6_ARE_ADDR_EQUAL(&ire->ire_addr_v6, v6group))
13774 13775 continue;
13775 13776
13776 13777 ire_gw = ire_ftable_lookup_v6(&ire->ire_gateway_addr_v6,
13777 13778 0, 0, IRE_INTERFACE, ire->ire_ill, ALL_ZONES, NULL,
13778 13779 match_flags, 0, ipst, NULL);
13779 13780 } else {
13780 13781 if (ire->ire_addr != group)
13781 13782 continue;
13782 13783
13783 13784 ire_gw = ire_ftable_lookup_v4(ire->ire_gateway_addr,
13784 13785 0, 0, IRE_INTERFACE, ire->ire_ill, ALL_ZONES, NULL,
13785 13786 match_flags, 0, ipst, NULL);
13786 13787 }
13787 13788 /* No interface route exists for the gateway; skip this ire. */
13788 13789 if (ire_gw == NULL)
13789 13790 continue;
13790 13791 if (ire_gw->ire_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
13791 13792 ire_refrele(ire_gw);
13792 13793 continue;
13793 13794 }
13794 13795 ASSERT(ire_gw->ire_ill != NULL); /* IRE_INTERFACE */
13795 13796 ifindex = ire_gw->ire_ill->ill_phyint->phyint_ifindex;
13796 13797
13797 13798 /*
13798 13799 * The operation is considered a success if
13799 13800 * it succeeds at least once on any one interface.
13800 13801 */
13801 13802 error = fn(connp, checkonly, v6group, INADDR_ANY, ifindex,
13802 13803 fmode, v6src);
13803 13804 if (error == 0)
13804 13805 result = CGTP_MCAST_SUCCESS;
13805 13806
13806 13807 ire_refrele(ire_gw);
13807 13808 }
13808 13809 irb_refrele(irb);
13809 13810 /*
13810 13811 * Consider the call as successful if we succeeded on at least
13811 13812 * one interface. Otherwise, return the last encountered error.
13812 13813 */
13813 13814 return (result == CGTP_MCAST_SUCCESS ? 0 : error);
13814 13815 }
13815 13816
13816 13817 /*
13817 13818 * Return the expected CGTP hooks version number.
13818 13819 */
13819 13820 int
13820 13821 ip_cgtp_filter_supported(void)
13821 13822 {
13822 13823 return (ip_cgtp_filter_rev);
13823 13824 }
13824 13825
13825 13826 /*
13826 13827 * CGTP hooks can be registered by invoking this function.
13827 13828 * Checks that the version number matches.
13828 13829 */
13829 13830 int
13830 13831 ip_cgtp_filter_register(netstackid_t stackid, cgtp_filter_ops_t *ops)
13831 13832 {
13832 13833 netstack_t *ns;
13833 13834 ip_stack_t *ipst;
13834 13835
13835 13836 if (ops->cfo_filter_rev != CGTP_FILTER_REV)
13836 13837 return (ENOTSUP);
13837 13838
13838 13839 ns = netstack_find_by_stackid(stackid);
13839 13840 if (ns == NULL)
13840 13841 return (EINVAL);
13841 13842 ipst = ns->netstack_ip;
13842 13843 ASSERT(ipst != NULL);
13843 13844
13844 13845 if (ipst->ips_ip_cgtp_filter_ops != NULL) {
13845 13846 netstack_rele(ns);
13846 13847 return (EALREADY);
13847 13848 }
13848 13849
13849 13850 ipst->ips_ip_cgtp_filter_ops = ops;
13850 13851
13851 13852 ill_set_inputfn_all(ipst);
13852 13853
13853 13854 netstack_rele(ns);
13854 13855 return (0);
13855 13856 }
13856 13857
13857 13858 /*
13858 13859 * CGTP hooks can be unregistered by invoking this function.
13859 13860 * Returns ENXIO if there was no registration.
13860 13861 * Returns EBUSY if the ndd variable has not been turned off.
13861 13862 */
13862 13863 int
13863 13864 ip_cgtp_filter_unregister(netstackid_t stackid)
13864 13865 {
13865 13866 netstack_t *ns;
13866 13867 ip_stack_t *ipst;
13867 13868
13868 13869 ns = netstack_find_by_stackid(stackid);
13869 13870 if (ns == NULL)
13870 13871 return (EINVAL);
13871 13872 ipst = ns->netstack_ip;
13872 13873 ASSERT(ipst != NULL);
13873 13874
13874 13875 if (ipst->ips_ip_cgtp_filter) {
13875 13876 netstack_rele(ns);
13876 13877 return (EBUSY);
13877 13878 }
13878 13879
13879 13880 if (ipst->ips_ip_cgtp_filter_ops == NULL) {
13880 13881 netstack_rele(ns);
13881 13882 return (ENXIO);
13882 13883 }
13883 13884 ipst->ips_ip_cgtp_filter_ops = NULL;
13884 13885
13885 13886 ill_set_inputfn_all(ipst);
13886 13887
13887 13888 netstack_rele(ns);
13888 13889 return (0);
13889 13890 }
13890 13891
13891 13892 /*
13892 13893 * Check whether there is a CGTP filter registration.
13893 13894 * Returns non-zero if there is a registration, otherwise returns zero.
13894 13895 * Note: returns zero if bad stackid.
13895 13896 */
13896 13897 int
13897 13898 ip_cgtp_filter_is_registered(netstackid_t stackid)
13898 13899 {
13899 13900 netstack_t *ns;
13900 13901 ip_stack_t *ipst;
13901 13902 int ret;
13902 13903
13903 13904 ns = netstack_find_by_stackid(stackid);
13904 13905 if (ns == NULL)
13905 13906 return (0);
13906 13907 ipst = ns->netstack_ip;
13907 13908 ASSERT(ipst != NULL);
13908 13909
13909 13910 if (ipst->ips_ip_cgtp_filter_ops != NULL)
13910 13911 ret = 1;
13911 13912 else
13912 13913 ret = 0;
13913 13914
13914 13915 netstack_rele(ns);
13915 13916 return (ret);
13916 13917 }
13917 13918
13918 13919 static int
13919 13920 ip_squeue_switch(int val)
13920 13921 {
13921 13922 int rval;
13922 13923
13923 13924 switch (val) {
13924 13925 case IP_SQUEUE_ENTER_NODRAIN:
13925 13926 rval = SQ_NODRAIN;
13926 13927 break;
13927 13928 case IP_SQUEUE_ENTER:
13928 13929 rval = SQ_PROCESS;
13929 13930 break;
13930 13931 case IP_SQUEUE_FILL:
13931 13932 default:
13932 13933 rval = SQ_FILL;
13933 13934 break;
13934 13935 }
13935 13936 return (rval);
13936 13937 }
13937 13938
13938 13939 static void *
13939 13940 ip_kstat2_init(netstackid_t stackid, ip_stat_t *ip_statisticsp)
13940 13941 {
13941 13942 kstat_t *ksp;
13942 13943
13943 13944 ip_stat_t template = {
13944 13945 { "ip_udp_fannorm", KSTAT_DATA_UINT64 },
13945 13946 { "ip_udp_fanmb", KSTAT_DATA_UINT64 },
13946 13947 { "ip_recv_pullup", KSTAT_DATA_UINT64 },
13947 13948 { "ip_db_ref", KSTAT_DATA_UINT64 },
13948 13949 { "ip_notaligned", KSTAT_DATA_UINT64 },
13949 13950 { "ip_multimblk", KSTAT_DATA_UINT64 },
13950 13951 { "ip_opt", KSTAT_DATA_UINT64 },
13951 13952 { "ipsec_proto_ahesp", KSTAT_DATA_UINT64 },
13952 13953 { "ip_conn_flputbq", KSTAT_DATA_UINT64 },
13953 13954 { "ip_conn_walk_drain", KSTAT_DATA_UINT64 },
13954 13955 { "ip_out_sw_cksum", KSTAT_DATA_UINT64 },
13955 13956 { "ip_out_sw_cksum_bytes", KSTAT_DATA_UINT64 },
13956 13957 { "ip_in_sw_cksum", KSTAT_DATA_UINT64 },
13957 13958 { "ip_ire_reclaim_calls", KSTAT_DATA_UINT64 },
13958 13959 { "ip_ire_reclaim_deleted", KSTAT_DATA_UINT64 },
13959 13960 { "ip_nce_reclaim_calls", KSTAT_DATA_UINT64 },
13960 13961 { "ip_nce_reclaim_deleted", KSTAT_DATA_UINT64 },
13961 13962 { "ip_nce_mcast_reclaim_calls", KSTAT_DATA_UINT64 },
13962 13963 { "ip_nce_mcast_reclaim_deleted", KSTAT_DATA_UINT64 },
13963 13964 { "ip_nce_mcast_reclaim_tqfail", KSTAT_DATA_UINT64 },
13964 13965 { "ip_dce_reclaim_calls", KSTAT_DATA_UINT64 },
13965 13966 { "ip_dce_reclaim_deleted", KSTAT_DATA_UINT64 },
13966 13967 { "ip_tcp_in_full_hw_cksum_err", KSTAT_DATA_UINT64 },
13967 13968 { "ip_tcp_in_part_hw_cksum_err", KSTAT_DATA_UINT64 },
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13968 13969 { "ip_tcp_in_sw_cksum_err", KSTAT_DATA_UINT64 },
13969 13970 { "ip_udp_in_full_hw_cksum_err", KSTAT_DATA_UINT64 },
13970 13971 { "ip_udp_in_part_hw_cksum_err", KSTAT_DATA_UINT64 },
13971 13972 { "ip_udp_in_sw_cksum_err", KSTAT_DATA_UINT64 },
13972 13973 { "conn_in_recvdstaddr", KSTAT_DATA_UINT64 },
13973 13974 { "conn_in_recvopts", KSTAT_DATA_UINT64 },
13974 13975 { "conn_in_recvif", KSTAT_DATA_UINT64 },
13975 13976 { "conn_in_recvslla", KSTAT_DATA_UINT64 },
13976 13977 { "conn_in_recvucred", KSTAT_DATA_UINT64 },
13977 13978 { "conn_in_recvttl", KSTAT_DATA_UINT64 },
13979 + { "conn_in_recvtos", KSTAT_DATA_UINT64 },
13978 13980 { "conn_in_recvhopopts", KSTAT_DATA_UINT64 },
13979 13981 { "conn_in_recvhoplimit", KSTAT_DATA_UINT64 },
13980 13982 { "conn_in_recvdstopts", KSTAT_DATA_UINT64 },
13981 13983 { "conn_in_recvrthdrdstopts", KSTAT_DATA_UINT64 },
13982 13984 { "conn_in_recvrthdr", KSTAT_DATA_UINT64 },
13983 13985 { "conn_in_recvpktinfo", KSTAT_DATA_UINT64 },
13984 13986 { "conn_in_recvtclass", KSTAT_DATA_UINT64 },
13985 13987 { "conn_in_timestamp", KSTAT_DATA_UINT64 },
13986 13988 };
13987 13989
13988 13990 ksp = kstat_create_netstack("ip", 0, "ipstat", "net",
13989 13991 KSTAT_TYPE_NAMED, sizeof (template) / sizeof (kstat_named_t),
13990 13992 KSTAT_FLAG_VIRTUAL, stackid);
13991 13993
13992 13994 if (ksp == NULL)
13993 13995 return (NULL);
13994 13996
13995 13997 bcopy(&template, ip_statisticsp, sizeof (template));
13996 13998 ksp->ks_data = (void *)ip_statisticsp;
13997 13999 ksp->ks_private = (void *)(uintptr_t)stackid;
13998 14000
13999 14001 kstat_install(ksp);
14000 14002 return (ksp);
14001 14003 }
14002 14004
14003 14005 static void
14004 14006 ip_kstat2_fini(netstackid_t stackid, kstat_t *ksp)
14005 14007 {
14006 14008 if (ksp != NULL) {
14007 14009 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
14008 14010 kstat_delete_netstack(ksp, stackid);
14009 14011 }
14010 14012 }
14011 14013
14012 14014 static void *
14013 14015 ip_kstat_init(netstackid_t stackid, ip_stack_t *ipst)
14014 14016 {
14015 14017 kstat_t *ksp;
14016 14018
14017 14019 ip_named_kstat_t template = {
14018 14020 { "forwarding", KSTAT_DATA_UINT32, 0 },
14019 14021 { "defaultTTL", KSTAT_DATA_UINT32, 0 },
14020 14022 { "inReceives", KSTAT_DATA_UINT64, 0 },
14021 14023 { "inHdrErrors", KSTAT_DATA_UINT32, 0 },
14022 14024 { "inAddrErrors", KSTAT_DATA_UINT32, 0 },
14023 14025 { "forwDatagrams", KSTAT_DATA_UINT64, 0 },
14024 14026 { "inUnknownProtos", KSTAT_DATA_UINT32, 0 },
14025 14027 { "inDiscards", KSTAT_DATA_UINT32, 0 },
14026 14028 { "inDelivers", KSTAT_DATA_UINT64, 0 },
14027 14029 { "outRequests", KSTAT_DATA_UINT64, 0 },
14028 14030 { "outDiscards", KSTAT_DATA_UINT32, 0 },
14029 14031 { "outNoRoutes", KSTAT_DATA_UINT32, 0 },
14030 14032 { "reasmTimeout", KSTAT_DATA_UINT32, 0 },
14031 14033 { "reasmReqds", KSTAT_DATA_UINT32, 0 },
14032 14034 { "reasmOKs", KSTAT_DATA_UINT32, 0 },
14033 14035 { "reasmFails", KSTAT_DATA_UINT32, 0 },
14034 14036 { "fragOKs", KSTAT_DATA_UINT32, 0 },
14035 14037 { "fragFails", KSTAT_DATA_UINT32, 0 },
14036 14038 { "fragCreates", KSTAT_DATA_UINT32, 0 },
14037 14039 { "addrEntrySize", KSTAT_DATA_INT32, 0 },
14038 14040 { "routeEntrySize", KSTAT_DATA_INT32, 0 },
14039 14041 { "netToMediaEntrySize", KSTAT_DATA_INT32, 0 },
14040 14042 { "routingDiscards", KSTAT_DATA_UINT32, 0 },
14041 14043 { "inErrs", KSTAT_DATA_UINT32, 0 },
14042 14044 { "noPorts", KSTAT_DATA_UINT32, 0 },
14043 14045 { "inCksumErrs", KSTAT_DATA_UINT32, 0 },
14044 14046 { "reasmDuplicates", KSTAT_DATA_UINT32, 0 },
14045 14047 { "reasmPartDups", KSTAT_DATA_UINT32, 0 },
14046 14048 { "forwProhibits", KSTAT_DATA_UINT32, 0 },
14047 14049 { "udpInCksumErrs", KSTAT_DATA_UINT32, 0 },
14048 14050 { "udpInOverflows", KSTAT_DATA_UINT32, 0 },
14049 14051 { "rawipInOverflows", KSTAT_DATA_UINT32, 0 },
14050 14052 { "ipsecInSucceeded", KSTAT_DATA_UINT32, 0 },
14051 14053 { "ipsecInFailed", KSTAT_DATA_INT32, 0 },
14052 14054 { "memberEntrySize", KSTAT_DATA_INT32, 0 },
14053 14055 { "inIPv6", KSTAT_DATA_UINT32, 0 },
14054 14056 { "outIPv6", KSTAT_DATA_UINT32, 0 },
14055 14057 { "outSwitchIPv6", KSTAT_DATA_UINT32, 0 },
14056 14058 };
14057 14059
14058 14060 ksp = kstat_create_netstack("ip", 0, "ip", "mib2", KSTAT_TYPE_NAMED,
14059 14061 NUM_OF_FIELDS(ip_named_kstat_t), 0, stackid);
14060 14062 if (ksp == NULL || ksp->ks_data == NULL)
14061 14063 return (NULL);
14062 14064
14063 14065 template.forwarding.value.ui32 = WE_ARE_FORWARDING(ipst) ? 1:2;
14064 14066 template.defaultTTL.value.ui32 = (uint32_t)ipst->ips_ip_def_ttl;
14065 14067 template.reasmTimeout.value.ui32 = ipst->ips_ip_reassembly_timeout;
14066 14068 template.addrEntrySize.value.i32 = sizeof (mib2_ipAddrEntry_t);
14067 14069 template.routeEntrySize.value.i32 = sizeof (mib2_ipRouteEntry_t);
14068 14070
14069 14071 template.netToMediaEntrySize.value.i32 =
14070 14072 sizeof (mib2_ipNetToMediaEntry_t);
14071 14073
14072 14074 template.memberEntrySize.value.i32 = sizeof (ipv6_member_t);
14073 14075
14074 14076 bcopy(&template, ksp->ks_data, sizeof (template));
14075 14077 ksp->ks_update = ip_kstat_update;
14076 14078 ksp->ks_private = (void *)(uintptr_t)stackid;
14077 14079
14078 14080 kstat_install(ksp);
14079 14081 return (ksp);
14080 14082 }
14081 14083
14082 14084 static void
14083 14085 ip_kstat_fini(netstackid_t stackid, kstat_t *ksp)
14084 14086 {
14085 14087 if (ksp != NULL) {
14086 14088 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
14087 14089 kstat_delete_netstack(ksp, stackid);
14088 14090 }
14089 14091 }
14090 14092
14091 14093 static int
14092 14094 ip_kstat_update(kstat_t *kp, int rw)
14093 14095 {
14094 14096 ip_named_kstat_t *ipkp;
14095 14097 mib2_ipIfStatsEntry_t ipmib;
14096 14098 ill_walk_context_t ctx;
14097 14099 ill_t *ill;
14098 14100 netstackid_t stackid = (zoneid_t)(uintptr_t)kp->ks_private;
14099 14101 netstack_t *ns;
14100 14102 ip_stack_t *ipst;
14101 14103
14102 14104 if (kp->ks_data == NULL)
14103 14105 return (EIO);
14104 14106
14105 14107 if (rw == KSTAT_WRITE)
14106 14108 return (EACCES);
14107 14109
14108 14110 ns = netstack_find_by_stackid(stackid);
14109 14111 if (ns == NULL)
14110 14112 return (-1);
14111 14113 ipst = ns->netstack_ip;
14112 14114 if (ipst == NULL) {
14113 14115 netstack_rele(ns);
14114 14116 return (-1);
14115 14117 }
14116 14118 ipkp = (ip_named_kstat_t *)kp->ks_data;
14117 14119
14118 14120 bcopy(&ipst->ips_ip_mib, &ipmib, sizeof (ipmib));
14119 14121 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
14120 14122 ill = ILL_START_WALK_V4(&ctx, ipst);
14121 14123 for (; ill != NULL; ill = ill_next(&ctx, ill))
14122 14124 ip_mib2_add_ip_stats(&ipmib, ill->ill_ip_mib);
14123 14125 rw_exit(&ipst->ips_ill_g_lock);
14124 14126
14125 14127 ipkp->forwarding.value.ui32 = ipmib.ipIfStatsForwarding;
14126 14128 ipkp->defaultTTL.value.ui32 = ipmib.ipIfStatsDefaultTTL;
14127 14129 ipkp->inReceives.value.ui64 = ipmib.ipIfStatsHCInReceives;
14128 14130 ipkp->inHdrErrors.value.ui32 = ipmib.ipIfStatsInHdrErrors;
14129 14131 ipkp->inAddrErrors.value.ui32 = ipmib.ipIfStatsInAddrErrors;
14130 14132 ipkp->forwDatagrams.value.ui64 = ipmib.ipIfStatsHCOutForwDatagrams;
14131 14133 ipkp->inUnknownProtos.value.ui32 = ipmib.ipIfStatsInUnknownProtos;
14132 14134 ipkp->inDiscards.value.ui32 = ipmib.ipIfStatsInDiscards;
14133 14135 ipkp->inDelivers.value.ui64 = ipmib.ipIfStatsHCInDelivers;
14134 14136 ipkp->outRequests.value.ui64 = ipmib.ipIfStatsHCOutRequests;
14135 14137 ipkp->outDiscards.value.ui32 = ipmib.ipIfStatsOutDiscards;
14136 14138 ipkp->outNoRoutes.value.ui32 = ipmib.ipIfStatsOutNoRoutes;
14137 14139 ipkp->reasmTimeout.value.ui32 = ipst->ips_ip_reassembly_timeout;
14138 14140 ipkp->reasmReqds.value.ui32 = ipmib.ipIfStatsReasmReqds;
14139 14141 ipkp->reasmOKs.value.ui32 = ipmib.ipIfStatsReasmOKs;
14140 14142 ipkp->reasmFails.value.ui32 = ipmib.ipIfStatsReasmFails;
14141 14143 ipkp->fragOKs.value.ui32 = ipmib.ipIfStatsOutFragOKs;
14142 14144 ipkp->fragFails.value.ui32 = ipmib.ipIfStatsOutFragFails;
14143 14145 ipkp->fragCreates.value.ui32 = ipmib.ipIfStatsOutFragCreates;
14144 14146
14145 14147 ipkp->routingDiscards.value.ui32 = 0;
14146 14148 ipkp->inErrs.value.ui32 = ipmib.tcpIfStatsInErrs;
14147 14149 ipkp->noPorts.value.ui32 = ipmib.udpIfStatsNoPorts;
14148 14150 ipkp->inCksumErrs.value.ui32 = ipmib.ipIfStatsInCksumErrs;
14149 14151 ipkp->reasmDuplicates.value.ui32 = ipmib.ipIfStatsReasmDuplicates;
14150 14152 ipkp->reasmPartDups.value.ui32 = ipmib.ipIfStatsReasmPartDups;
14151 14153 ipkp->forwProhibits.value.ui32 = ipmib.ipIfStatsForwProhibits;
14152 14154 ipkp->udpInCksumErrs.value.ui32 = ipmib.udpIfStatsInCksumErrs;
14153 14155 ipkp->udpInOverflows.value.ui32 = ipmib.udpIfStatsInOverflows;
14154 14156 ipkp->rawipInOverflows.value.ui32 = ipmib.rawipIfStatsInOverflows;
14155 14157 ipkp->ipsecInSucceeded.value.ui32 = ipmib.ipsecIfStatsInSucceeded;
14156 14158 ipkp->ipsecInFailed.value.i32 = ipmib.ipsecIfStatsInFailed;
14157 14159
14158 14160 ipkp->inIPv6.value.ui32 = ipmib.ipIfStatsInWrongIPVersion;
14159 14161 ipkp->outIPv6.value.ui32 = ipmib.ipIfStatsOutWrongIPVersion;
14160 14162 ipkp->outSwitchIPv6.value.ui32 = ipmib.ipIfStatsOutSwitchIPVersion;
14161 14163
14162 14164 netstack_rele(ns);
14163 14165
14164 14166 return (0);
14165 14167 }
14166 14168
14167 14169 static void *
14168 14170 icmp_kstat_init(netstackid_t stackid)
14169 14171 {
14170 14172 kstat_t *ksp;
14171 14173
14172 14174 icmp_named_kstat_t template = {
14173 14175 { "inMsgs", KSTAT_DATA_UINT32 },
14174 14176 { "inErrors", KSTAT_DATA_UINT32 },
14175 14177 { "inDestUnreachs", KSTAT_DATA_UINT32 },
14176 14178 { "inTimeExcds", KSTAT_DATA_UINT32 },
14177 14179 { "inParmProbs", KSTAT_DATA_UINT32 },
14178 14180 { "inSrcQuenchs", KSTAT_DATA_UINT32 },
14179 14181 { "inRedirects", KSTAT_DATA_UINT32 },
14180 14182 { "inEchos", KSTAT_DATA_UINT32 },
14181 14183 { "inEchoReps", KSTAT_DATA_UINT32 },
14182 14184 { "inTimestamps", KSTAT_DATA_UINT32 },
14183 14185 { "inTimestampReps", KSTAT_DATA_UINT32 },
14184 14186 { "inAddrMasks", KSTAT_DATA_UINT32 },
14185 14187 { "inAddrMaskReps", KSTAT_DATA_UINT32 },
14186 14188 { "outMsgs", KSTAT_DATA_UINT32 },
14187 14189 { "outErrors", KSTAT_DATA_UINT32 },
14188 14190 { "outDestUnreachs", KSTAT_DATA_UINT32 },
14189 14191 { "outTimeExcds", KSTAT_DATA_UINT32 },
14190 14192 { "outParmProbs", KSTAT_DATA_UINT32 },
14191 14193 { "outSrcQuenchs", KSTAT_DATA_UINT32 },
14192 14194 { "outRedirects", KSTAT_DATA_UINT32 },
14193 14195 { "outEchos", KSTAT_DATA_UINT32 },
14194 14196 { "outEchoReps", KSTAT_DATA_UINT32 },
14195 14197 { "outTimestamps", KSTAT_DATA_UINT32 },
14196 14198 { "outTimestampReps", KSTAT_DATA_UINT32 },
14197 14199 { "outAddrMasks", KSTAT_DATA_UINT32 },
14198 14200 { "outAddrMaskReps", KSTAT_DATA_UINT32 },
14199 14201 { "inChksumErrs", KSTAT_DATA_UINT32 },
14200 14202 { "inUnknowns", KSTAT_DATA_UINT32 },
14201 14203 { "inFragNeeded", KSTAT_DATA_UINT32 },
14202 14204 { "outFragNeeded", KSTAT_DATA_UINT32 },
14203 14205 { "outDrops", KSTAT_DATA_UINT32 },
14204 14206 { "inOverFlows", KSTAT_DATA_UINT32 },
14205 14207 { "inBadRedirects", KSTAT_DATA_UINT32 },
14206 14208 };
14207 14209
14208 14210 ksp = kstat_create_netstack("ip", 0, "icmp", "mib2", KSTAT_TYPE_NAMED,
14209 14211 NUM_OF_FIELDS(icmp_named_kstat_t), 0, stackid);
14210 14212 if (ksp == NULL || ksp->ks_data == NULL)
14211 14213 return (NULL);
14212 14214
14213 14215 bcopy(&template, ksp->ks_data, sizeof (template));
14214 14216
14215 14217 ksp->ks_update = icmp_kstat_update;
14216 14218 ksp->ks_private = (void *)(uintptr_t)stackid;
14217 14219
14218 14220 kstat_install(ksp);
14219 14221 return (ksp);
14220 14222 }
14221 14223
14222 14224 static void
14223 14225 icmp_kstat_fini(netstackid_t stackid, kstat_t *ksp)
14224 14226 {
14225 14227 if (ksp != NULL) {
14226 14228 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
14227 14229 kstat_delete_netstack(ksp, stackid);
14228 14230 }
14229 14231 }
14230 14232
14231 14233 static int
14232 14234 icmp_kstat_update(kstat_t *kp, int rw)
14233 14235 {
14234 14236 icmp_named_kstat_t *icmpkp;
14235 14237 netstackid_t stackid = (zoneid_t)(uintptr_t)kp->ks_private;
14236 14238 netstack_t *ns;
14237 14239 ip_stack_t *ipst;
14238 14240
14239 14241 if (kp->ks_data == NULL)
14240 14242 return (EIO);
14241 14243
14242 14244 if (rw == KSTAT_WRITE)
14243 14245 return (EACCES);
14244 14246
14245 14247 ns = netstack_find_by_stackid(stackid);
14246 14248 if (ns == NULL)
14247 14249 return (-1);
14248 14250 ipst = ns->netstack_ip;
14249 14251 if (ipst == NULL) {
14250 14252 netstack_rele(ns);
14251 14253 return (-1);
14252 14254 }
14253 14255 icmpkp = (icmp_named_kstat_t *)kp->ks_data;
14254 14256
14255 14257 icmpkp->inMsgs.value.ui32 = ipst->ips_icmp_mib.icmpInMsgs;
14256 14258 icmpkp->inErrors.value.ui32 = ipst->ips_icmp_mib.icmpInErrors;
14257 14259 icmpkp->inDestUnreachs.value.ui32 =
14258 14260 ipst->ips_icmp_mib.icmpInDestUnreachs;
14259 14261 icmpkp->inTimeExcds.value.ui32 = ipst->ips_icmp_mib.icmpInTimeExcds;
14260 14262 icmpkp->inParmProbs.value.ui32 = ipst->ips_icmp_mib.icmpInParmProbs;
14261 14263 icmpkp->inSrcQuenchs.value.ui32 = ipst->ips_icmp_mib.icmpInSrcQuenchs;
14262 14264 icmpkp->inRedirects.value.ui32 = ipst->ips_icmp_mib.icmpInRedirects;
14263 14265 icmpkp->inEchos.value.ui32 = ipst->ips_icmp_mib.icmpInEchos;
14264 14266 icmpkp->inEchoReps.value.ui32 = ipst->ips_icmp_mib.icmpInEchoReps;
14265 14267 icmpkp->inTimestamps.value.ui32 = ipst->ips_icmp_mib.icmpInTimestamps;
14266 14268 icmpkp->inTimestampReps.value.ui32 =
14267 14269 ipst->ips_icmp_mib.icmpInTimestampReps;
14268 14270 icmpkp->inAddrMasks.value.ui32 = ipst->ips_icmp_mib.icmpInAddrMasks;
14269 14271 icmpkp->inAddrMaskReps.value.ui32 =
14270 14272 ipst->ips_icmp_mib.icmpInAddrMaskReps;
14271 14273 icmpkp->outMsgs.value.ui32 = ipst->ips_icmp_mib.icmpOutMsgs;
14272 14274 icmpkp->outErrors.value.ui32 = ipst->ips_icmp_mib.icmpOutErrors;
14273 14275 icmpkp->outDestUnreachs.value.ui32 =
14274 14276 ipst->ips_icmp_mib.icmpOutDestUnreachs;
14275 14277 icmpkp->outTimeExcds.value.ui32 = ipst->ips_icmp_mib.icmpOutTimeExcds;
14276 14278 icmpkp->outParmProbs.value.ui32 = ipst->ips_icmp_mib.icmpOutParmProbs;
14277 14279 icmpkp->outSrcQuenchs.value.ui32 =
14278 14280 ipst->ips_icmp_mib.icmpOutSrcQuenchs;
14279 14281 icmpkp->outRedirects.value.ui32 = ipst->ips_icmp_mib.icmpOutRedirects;
14280 14282 icmpkp->outEchos.value.ui32 = ipst->ips_icmp_mib.icmpOutEchos;
14281 14283 icmpkp->outEchoReps.value.ui32 = ipst->ips_icmp_mib.icmpOutEchoReps;
14282 14284 icmpkp->outTimestamps.value.ui32 =
14283 14285 ipst->ips_icmp_mib.icmpOutTimestamps;
14284 14286 icmpkp->outTimestampReps.value.ui32 =
14285 14287 ipst->ips_icmp_mib.icmpOutTimestampReps;
14286 14288 icmpkp->outAddrMasks.value.ui32 =
14287 14289 ipst->ips_icmp_mib.icmpOutAddrMasks;
14288 14290 icmpkp->outAddrMaskReps.value.ui32 =
14289 14291 ipst->ips_icmp_mib.icmpOutAddrMaskReps;
14290 14292 icmpkp->inCksumErrs.value.ui32 = ipst->ips_icmp_mib.icmpInCksumErrs;
14291 14293 icmpkp->inUnknowns.value.ui32 = ipst->ips_icmp_mib.icmpInUnknowns;
14292 14294 icmpkp->inFragNeeded.value.ui32 = ipst->ips_icmp_mib.icmpInFragNeeded;
14293 14295 icmpkp->outFragNeeded.value.ui32 =
14294 14296 ipst->ips_icmp_mib.icmpOutFragNeeded;
14295 14297 icmpkp->outDrops.value.ui32 = ipst->ips_icmp_mib.icmpOutDrops;
14296 14298 icmpkp->inOverflows.value.ui32 = ipst->ips_icmp_mib.icmpInOverflows;
14297 14299 icmpkp->inBadRedirects.value.ui32 =
14298 14300 ipst->ips_icmp_mib.icmpInBadRedirects;
14299 14301
14300 14302 netstack_rele(ns);
14301 14303 return (0);
14302 14304 }
14303 14305
14304 14306 /*
14305 14307 * This is the fanout function for raw socket opened for SCTP. Note
14306 14308 * that it is called after SCTP checks that there is no socket which
14307 14309 * wants a packet. Then before SCTP handles this out of the blue packet,
14308 14310 * this function is called to see if there is any raw socket for SCTP.
14309 14311 * If there is and it is bound to the correct address, the packet will
14310 14312 * be sent to that socket. Note that only one raw socket can be bound to
14311 14313 * a port. This is assured in ipcl_sctp_hash_insert();
14312 14314 */
14313 14315 void
14314 14316 ip_fanout_sctp_raw(mblk_t *mp, ipha_t *ipha, ip6_t *ip6h, uint32_t ports,
14315 14317 ip_recv_attr_t *ira)
14316 14318 {
14317 14319 conn_t *connp;
14318 14320 queue_t *rq;
14319 14321 boolean_t secure;
14320 14322 ill_t *ill = ira->ira_ill;
14321 14323 ip_stack_t *ipst = ill->ill_ipst;
14322 14324 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
14323 14325 sctp_stack_t *sctps = ipst->ips_netstack->netstack_sctp;
14324 14326 iaflags_t iraflags = ira->ira_flags;
14325 14327 ill_t *rill = ira->ira_rill;
14326 14328
14327 14329 secure = iraflags & IRAF_IPSEC_SECURE;
14328 14330
14329 14331 connp = ipcl_classify_raw(mp, IPPROTO_SCTP, ports, ipha, ip6h,
14330 14332 ira, ipst);
14331 14333 if (connp == NULL) {
14332 14334 /*
14333 14335 * Although raw sctp is not summed, OOB chunks must be.
14334 14336 * Drop the packet here if the sctp checksum failed.
14335 14337 */
14336 14338 if (iraflags & IRAF_SCTP_CSUM_ERR) {
14337 14339 SCTPS_BUMP_MIB(sctps, sctpChecksumError);
14338 14340 freemsg(mp);
14339 14341 return;
14340 14342 }
14341 14343 ira->ira_ill = ira->ira_rill = NULL;
14342 14344 sctp_ootb_input(mp, ira, ipst);
14343 14345 ira->ira_ill = ill;
14344 14346 ira->ira_rill = rill;
14345 14347 return;
14346 14348 }
14347 14349 rq = connp->conn_rq;
14348 14350 if (IPCL_IS_NONSTR(connp) ? connp->conn_flow_cntrld : !canputnext(rq)) {
14349 14351 CONN_DEC_REF(connp);
14350 14352 BUMP_MIB(ill->ill_ip_mib, rawipIfStatsInOverflows);
14351 14353 freemsg(mp);
14352 14354 return;
14353 14355 }
14354 14356 if (((iraflags & IRAF_IS_IPV4) ?
14355 14357 CONN_INBOUND_POLICY_PRESENT(connp, ipss) :
14356 14358 CONN_INBOUND_POLICY_PRESENT_V6(connp, ipss)) ||
14357 14359 secure) {
14358 14360 mp = ipsec_check_inbound_policy(mp, connp, ipha,
14359 14361 ip6h, ira);
14360 14362 if (mp == NULL) {
14361 14363 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
14362 14364 /* Note that mp is NULL */
14363 14365 ip_drop_input("ipIfStatsInDiscards", mp, ill);
14364 14366 CONN_DEC_REF(connp);
14365 14367 return;
14366 14368 }
14367 14369 }
14368 14370
14369 14371 if (iraflags & IRAF_ICMP_ERROR) {
14370 14372 (connp->conn_recvicmp)(connp, mp, NULL, ira);
14371 14373 } else {
14372 14374 ill_t *rill = ira->ira_rill;
14373 14375
14374 14376 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCInDelivers);
14375 14377 /* This is the SOCK_RAW, IPPROTO_SCTP case. */
14376 14378 ira->ira_ill = ira->ira_rill = NULL;
14377 14379 (connp->conn_recv)(connp, mp, NULL, ira);
14378 14380 ira->ira_ill = ill;
14379 14381 ira->ira_rill = rill;
14380 14382 }
14381 14383 CONN_DEC_REF(connp);
14382 14384 }
14383 14385
14384 14386 /*
14385 14387 * Free a packet that has the link-layer dl_unitdata_req_t or fast-path
14386 14388 * header before the ip payload.
14387 14389 */
14388 14390 static void
14389 14391 ip_xmit_flowctl_drop(ill_t *ill, mblk_t *mp, boolean_t is_fp_mp, int fp_mp_len)
14390 14392 {
14391 14393 int len = (mp->b_wptr - mp->b_rptr);
14392 14394 mblk_t *ip_mp;
14393 14395
14394 14396 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
14395 14397 if (is_fp_mp || len != fp_mp_len) {
14396 14398 if (len > fp_mp_len) {
14397 14399 /*
14398 14400 * fastpath header and ip header in the first mblk
14399 14401 */
14400 14402 mp->b_rptr += fp_mp_len;
14401 14403 } else {
14402 14404 /*
14403 14405 * ip_xmit_attach_llhdr had to prepend an mblk to
14404 14406 * attach the fastpath header before ip header.
14405 14407 */
14406 14408 ip_mp = mp->b_cont;
14407 14409 freeb(mp);
14408 14410 mp = ip_mp;
14409 14411 mp->b_rptr += (fp_mp_len - len);
14410 14412 }
14411 14413 } else {
14412 14414 ip_mp = mp->b_cont;
14413 14415 freeb(mp);
14414 14416 mp = ip_mp;
14415 14417 }
14416 14418 ip_drop_output("ipIfStatsOutDiscards - flow ctl", mp, ill);
14417 14419 freemsg(mp);
14418 14420 }
14419 14421
14420 14422 /*
14421 14423 * Normal post fragmentation function.
14422 14424 *
14423 14425 * Send a packet using the passed in nce. This handles both IPv4 and IPv6
14424 14426 * using the same state machine.
14425 14427 *
14426 14428 * We return an error on failure. In particular we return EWOULDBLOCK
14427 14429 * when the driver flow controls. In that case this ensures that ip_wsrv runs
14428 14430 * (currently by canputnext failure resulting in backenabling from GLD.)
14429 14431 * This allows the callers of conn_ip_output() to use EWOULDBLOCK as an
14430 14432 * indication that they can flow control until ip_wsrv() tells then to restart.
14431 14433 *
14432 14434 * If the nce passed by caller is incomplete, this function
14433 14435 * queues the packet and if necessary, sends ARP request and bails.
14434 14436 * If the Neighbor Cache passed is fully resolved, we simply prepend
14435 14437 * the link-layer header to the packet, do ipsec hw acceleration
14436 14438 * work if necessary, and send the packet out on the wire.
14437 14439 */
14438 14440 /* ARGSUSED6 */
14439 14441 int
14440 14442 ip_xmit(mblk_t *mp, nce_t *nce, iaflags_t ixaflags, uint_t pkt_len,
14441 14443 uint32_t xmit_hint, zoneid_t szone, zoneid_t nolzid, uintptr_t *ixacookie)
14442 14444 {
14443 14445 queue_t *wq;
14444 14446 ill_t *ill = nce->nce_ill;
14445 14447 ip_stack_t *ipst = ill->ill_ipst;
14446 14448 uint64_t delta;
14447 14449 boolean_t isv6 = ill->ill_isv6;
14448 14450 boolean_t fp_mp;
14449 14451 ncec_t *ncec = nce->nce_common;
14450 14452 int64_t now = LBOLT_FASTPATH64;
14451 14453 boolean_t is_probe;
14452 14454
14453 14455 DTRACE_PROBE1(ip__xmit, nce_t *, nce);
14454 14456
14455 14457 ASSERT(mp != NULL);
14456 14458 ASSERT(mp->b_datap->db_type == M_DATA);
14457 14459 ASSERT(pkt_len == msgdsize(mp));
14458 14460
14459 14461 /*
14460 14462 * If we have already been here and are coming back after ARP/ND.
14461 14463 * the IXAF_NO_TRACE flag is set. We skip FW_HOOKS, DTRACE and ipobs
14462 14464 * in that case since they have seen the packet when it came here
14463 14465 * the first time.
14464 14466 */
14465 14467 if (ixaflags & IXAF_NO_TRACE)
14466 14468 goto sendit;
14467 14469
14468 14470 if (ixaflags & IXAF_IS_IPV4) {
14469 14471 ipha_t *ipha = (ipha_t *)mp->b_rptr;
14470 14472
14471 14473 ASSERT(!isv6);
14472 14474 ASSERT(pkt_len == ntohs(((ipha_t *)mp->b_rptr)->ipha_length));
14473 14475 if (HOOKS4_INTERESTED_PHYSICAL_OUT(ipst) &&
14474 14476 !(ixaflags & IXAF_NO_PFHOOK)) {
14475 14477 int error;
14476 14478
14477 14479 FW_HOOKS(ipst->ips_ip4_physical_out_event,
14478 14480 ipst->ips_ipv4firewall_physical_out,
14479 14481 NULL, ill, ipha, mp, mp, 0, ipst, error);
14480 14482 DTRACE_PROBE1(ip4__physical__out__end,
14481 14483 mblk_t *, mp);
14482 14484 if (mp == NULL)
14483 14485 return (error);
14484 14486
14485 14487 /* The length could have changed */
14486 14488 pkt_len = msgdsize(mp);
14487 14489 }
14488 14490 if (ipst->ips_ip4_observe.he_interested) {
14489 14491 /*
14490 14492 * Note that for TX the zoneid is the sending
14491 14493 * zone, whether or not MLP is in play.
14492 14494 * Since the szone argument is the IP zoneid (i.e.,
14493 14495 * zero for exclusive-IP zones) and ipobs wants
14494 14496 * the system zoneid, we map it here.
14495 14497 */
14496 14498 szone = IP_REAL_ZONEID(szone, ipst);
14497 14499
14498 14500 /*
14499 14501 * On the outbound path the destination zone will be
14500 14502 * unknown as we're sending this packet out on the
14501 14503 * wire.
14502 14504 */
14503 14505 ipobs_hook(mp, IPOBS_HOOK_OUTBOUND, szone, ALL_ZONES,
14504 14506 ill, ipst);
14505 14507 }
14506 14508 DTRACE_IP7(send, mblk_t *, mp, conn_t *, NULL,
14507 14509 void_ip_t *, ipha, __dtrace_ipsr_ill_t *, ill,
14508 14510 ipha_t *, ipha, ip6_t *, NULL, int, 0);
14509 14511 } else {
14510 14512 ip6_t *ip6h = (ip6_t *)mp->b_rptr;
14511 14513
14512 14514 ASSERT(isv6);
14513 14515 ASSERT(pkt_len ==
14514 14516 ntohs(((ip6_t *)mp->b_rptr)->ip6_plen) + IPV6_HDR_LEN);
14515 14517 if (HOOKS6_INTERESTED_PHYSICAL_OUT(ipst) &&
14516 14518 !(ixaflags & IXAF_NO_PFHOOK)) {
14517 14519 int error;
14518 14520
14519 14521 FW_HOOKS6(ipst->ips_ip6_physical_out_event,
14520 14522 ipst->ips_ipv6firewall_physical_out,
14521 14523 NULL, ill, ip6h, mp, mp, 0, ipst, error);
14522 14524 DTRACE_PROBE1(ip6__physical__out__end,
14523 14525 mblk_t *, mp);
14524 14526 if (mp == NULL)
14525 14527 return (error);
14526 14528
14527 14529 /* The length could have changed */
14528 14530 pkt_len = msgdsize(mp);
14529 14531 }
14530 14532 if (ipst->ips_ip6_observe.he_interested) {
14531 14533 /* See above */
14532 14534 szone = IP_REAL_ZONEID(szone, ipst);
14533 14535
14534 14536 ipobs_hook(mp, IPOBS_HOOK_OUTBOUND, szone, ALL_ZONES,
14535 14537 ill, ipst);
14536 14538 }
14537 14539 DTRACE_IP7(send, mblk_t *, mp, conn_t *, NULL,
14538 14540 void_ip_t *, ip6h, __dtrace_ipsr_ill_t *, ill,
14539 14541 ipha_t *, NULL, ip6_t *, ip6h, int, 0);
14540 14542 }
14541 14543
14542 14544 sendit:
14543 14545 /*
14544 14546 * We check the state without a lock because the state can never
14545 14547 * move "backwards" to initial or incomplete.
14546 14548 */
14547 14549 switch (ncec->ncec_state) {
14548 14550 case ND_REACHABLE:
14549 14551 case ND_STALE:
14550 14552 case ND_DELAY:
14551 14553 case ND_PROBE:
14552 14554 mp = ip_xmit_attach_llhdr(mp, nce);
14553 14555 if (mp == NULL) {
14554 14556 /*
14555 14557 * ip_xmit_attach_llhdr has increased
14556 14558 * ipIfStatsOutDiscards and called ip_drop_output()
14557 14559 */
14558 14560 return (ENOBUFS);
14559 14561 }
14560 14562 /*
14561 14563 * check if nce_fastpath completed and we tagged on a
14562 14564 * copy of nce_fp_mp in ip_xmit_attach_llhdr().
14563 14565 */
14564 14566 fp_mp = (mp->b_datap->db_type == M_DATA);
14565 14567
14566 14568 if (fp_mp &&
14567 14569 (ill->ill_capabilities & ILL_CAPAB_DLD_DIRECT)) {
14568 14570 ill_dld_direct_t *idd;
14569 14571
14570 14572 idd = &ill->ill_dld_capab->idc_direct;
14571 14573 /*
14572 14574 * Send the packet directly to DLD, where it
14573 14575 * may be queued depending on the availability
14574 14576 * of transmit resources at the media layer.
14575 14577 * Return value should be taken into
14576 14578 * account and flow control the TCP.
14577 14579 */
14578 14580 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCOutTransmits);
14579 14581 UPDATE_MIB(ill->ill_ip_mib, ipIfStatsHCOutOctets,
14580 14582 pkt_len);
14581 14583
14582 14584 if (ixaflags & IXAF_NO_DEV_FLOW_CTL) {
14583 14585 (void) idd->idd_tx_df(idd->idd_tx_dh, mp,
14584 14586 (uintptr_t)xmit_hint, IP_DROP_ON_NO_DESC);
14585 14587 } else {
14586 14588 uintptr_t cookie;
14587 14589
14588 14590 if ((cookie = idd->idd_tx_df(idd->idd_tx_dh,
14589 14591 mp, (uintptr_t)xmit_hint, 0)) != 0) {
14590 14592 if (ixacookie != NULL)
14591 14593 *ixacookie = cookie;
14592 14594 return (EWOULDBLOCK);
14593 14595 }
14594 14596 }
14595 14597 } else {
14596 14598 wq = ill->ill_wq;
14597 14599
14598 14600 if (!(ixaflags & IXAF_NO_DEV_FLOW_CTL) &&
14599 14601 !canputnext(wq)) {
14600 14602 if (ixacookie != NULL)
14601 14603 *ixacookie = 0;
14602 14604 ip_xmit_flowctl_drop(ill, mp, fp_mp,
14603 14605 nce->nce_fp_mp != NULL ?
14604 14606 MBLKL(nce->nce_fp_mp) : 0);
14605 14607 return (EWOULDBLOCK);
14606 14608 }
14607 14609 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCOutTransmits);
14608 14610 UPDATE_MIB(ill->ill_ip_mib, ipIfStatsHCOutOctets,
14609 14611 pkt_len);
14610 14612 putnext(wq, mp);
14611 14613 }
14612 14614
14613 14615 /*
14614 14616 * The rest of this function implements Neighbor Unreachability
14615 14617 * detection. Determine if the ncec is eligible for NUD.
14616 14618 */
14617 14619 if (ncec->ncec_flags & NCE_F_NONUD)
14618 14620 return (0);
14619 14621
14620 14622 ASSERT(ncec->ncec_state != ND_INCOMPLETE);
14621 14623
14622 14624 /*
14623 14625 * Check for upper layer advice
14624 14626 */
14625 14627 if (ixaflags & IXAF_REACH_CONF) {
14626 14628 timeout_id_t tid;
14627 14629
14628 14630 /*
14629 14631 * It should be o.k. to check the state without
14630 14632 * a lock here, at most we lose an advice.
14631 14633 */
14632 14634 ncec->ncec_last = TICK_TO_MSEC(now);
14633 14635 if (ncec->ncec_state != ND_REACHABLE) {
14634 14636 mutex_enter(&ncec->ncec_lock);
14635 14637 ncec->ncec_state = ND_REACHABLE;
14636 14638 tid = ncec->ncec_timeout_id;
14637 14639 ncec->ncec_timeout_id = 0;
14638 14640 mutex_exit(&ncec->ncec_lock);
14639 14641 (void) untimeout(tid);
14640 14642 if (ip_debug > 2) {
14641 14643 /* ip1dbg */
14642 14644 pr_addr_dbg("ip_xmit: state"
14643 14645 " for %s changed to"
14644 14646 " REACHABLE\n", AF_INET6,
14645 14647 &ncec->ncec_addr);
14646 14648 }
14647 14649 }
14648 14650 return (0);
14649 14651 }
14650 14652
14651 14653 delta = TICK_TO_MSEC(now) - ncec->ncec_last;
14652 14654 ip1dbg(("ip_xmit: delta = %" PRId64
14653 14655 " ill_reachable_time = %d \n", delta,
14654 14656 ill->ill_reachable_time));
14655 14657 if (delta > (uint64_t)ill->ill_reachable_time) {
14656 14658 mutex_enter(&ncec->ncec_lock);
14657 14659 switch (ncec->ncec_state) {
14658 14660 case ND_REACHABLE:
14659 14661 ASSERT((ncec->ncec_flags & NCE_F_NONUD) == 0);
14660 14662 /* FALLTHROUGH */
14661 14663 case ND_STALE:
14662 14664 /*
14663 14665 * ND_REACHABLE is identical to
14664 14666 * ND_STALE in this specific case. If
14665 14667 * reachable time has expired for this
14666 14668 * neighbor (delta is greater than
14667 14669 * reachable time), conceptually, the
14668 14670 * neighbor cache is no longer in
14669 14671 * REACHABLE state, but already in
14670 14672 * STALE state. So the correct
14671 14673 * transition here is to ND_DELAY.
14672 14674 */
14673 14675 ncec->ncec_state = ND_DELAY;
14674 14676 mutex_exit(&ncec->ncec_lock);
14675 14677 nce_restart_timer(ncec,
14676 14678 ipst->ips_delay_first_probe_time);
14677 14679 if (ip_debug > 3) {
14678 14680 /* ip2dbg */
14679 14681 pr_addr_dbg("ip_xmit: state"
14680 14682 " for %s changed to"
14681 14683 " DELAY\n", AF_INET6,
14682 14684 &ncec->ncec_addr);
14683 14685 }
14684 14686 break;
14685 14687 case ND_DELAY:
14686 14688 case ND_PROBE:
14687 14689 mutex_exit(&ncec->ncec_lock);
14688 14690 /* Timers have already started */
14689 14691 break;
14690 14692 case ND_UNREACHABLE:
14691 14693 /*
14692 14694 * nce_timer has detected that this ncec
14693 14695 * is unreachable and initiated deleting
14694 14696 * this ncec.
14695 14697 * This is a harmless race where we found the
14696 14698 * ncec before it was deleted and have
14697 14699 * just sent out a packet using this
14698 14700 * unreachable ncec.
14699 14701 */
14700 14702 mutex_exit(&ncec->ncec_lock);
14701 14703 break;
14702 14704 default:
14703 14705 ASSERT(0);
14704 14706 mutex_exit(&ncec->ncec_lock);
14705 14707 }
14706 14708 }
14707 14709 return (0);
14708 14710
14709 14711 case ND_INCOMPLETE:
14710 14712 /*
14711 14713 * the state could have changed since we didn't hold the lock.
14712 14714 * Re-verify state under lock.
14713 14715 */
14714 14716 is_probe = ipmp_packet_is_probe(mp, nce->nce_ill);
14715 14717 mutex_enter(&ncec->ncec_lock);
14716 14718 if (NCE_ISREACHABLE(ncec)) {
14717 14719 mutex_exit(&ncec->ncec_lock);
14718 14720 goto sendit;
14719 14721 }
14720 14722 /* queue the packet */
14721 14723 nce_queue_mp(ncec, mp, is_probe);
14722 14724 mutex_exit(&ncec->ncec_lock);
14723 14725 DTRACE_PROBE2(ip__xmit__incomplete,
14724 14726 (ncec_t *), ncec, (mblk_t *), mp);
14725 14727 return (0);
14726 14728
14727 14729 case ND_INITIAL:
14728 14730 /*
14729 14731 * State could have changed since we didn't hold the lock, so
14730 14732 * re-verify state.
14731 14733 */
14732 14734 is_probe = ipmp_packet_is_probe(mp, nce->nce_ill);
14733 14735 mutex_enter(&ncec->ncec_lock);
14734 14736 if (NCE_ISREACHABLE(ncec)) {
14735 14737 mutex_exit(&ncec->ncec_lock);
14736 14738 goto sendit;
14737 14739 }
14738 14740 nce_queue_mp(ncec, mp, is_probe);
14739 14741 if (ncec->ncec_state == ND_INITIAL) {
14740 14742 ncec->ncec_state = ND_INCOMPLETE;
14741 14743 mutex_exit(&ncec->ncec_lock);
14742 14744 /*
14743 14745 * figure out the source we want to use
14744 14746 * and resolve it.
14745 14747 */
14746 14748 ip_ndp_resolve(ncec);
14747 14749 } else {
14748 14750 mutex_exit(&ncec->ncec_lock);
14749 14751 }
14750 14752 return (0);
14751 14753
14752 14754 case ND_UNREACHABLE:
14753 14755 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
14754 14756 ip_drop_output("ipIfStatsOutDiscards - ND_UNREACHABLE",
14755 14757 mp, ill);
14756 14758 freemsg(mp);
14757 14759 return (0);
14758 14760
14759 14761 default:
14760 14762 ASSERT(0);
14761 14763 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
14762 14764 ip_drop_output("ipIfStatsOutDiscards - ND_other",
14763 14765 mp, ill);
14764 14766 freemsg(mp);
14765 14767 return (ENETUNREACH);
14766 14768 }
14767 14769 }
14768 14770
14769 14771 /*
14770 14772 * Return B_TRUE if the buffers differ in length or content.
14771 14773 * This is used for comparing extension header buffers.
14772 14774 * Note that an extension header would be declared different
14773 14775 * even if all that changed was the next header value in that header i.e.
14774 14776 * what really changed is the next extension header.
14775 14777 */
14776 14778 boolean_t
14777 14779 ip_cmpbuf(const void *abuf, uint_t alen, boolean_t b_valid, const void *bbuf,
14778 14780 uint_t blen)
14779 14781 {
14780 14782 if (!b_valid)
14781 14783 blen = 0;
14782 14784
14783 14785 if (alen != blen)
14784 14786 return (B_TRUE);
14785 14787 if (alen == 0)
14786 14788 return (B_FALSE); /* Both zero length */
14787 14789 return (bcmp(abuf, bbuf, alen));
14788 14790 }
14789 14791
14790 14792 /*
14791 14793 * Preallocate memory for ip_savebuf(). Returns B_TRUE if ok.
14792 14794 * Return B_FALSE if memory allocation fails - don't change any state!
14793 14795 */
14794 14796 boolean_t
14795 14797 ip_allocbuf(void **dstp, uint_t *dstlenp, boolean_t src_valid,
14796 14798 const void *src, uint_t srclen)
14797 14799 {
14798 14800 void *dst;
14799 14801
14800 14802 if (!src_valid)
14801 14803 srclen = 0;
14802 14804
14803 14805 ASSERT(*dstlenp == 0);
14804 14806 if (src != NULL && srclen != 0) {
14805 14807 dst = mi_alloc(srclen, BPRI_MED);
14806 14808 if (dst == NULL)
14807 14809 return (B_FALSE);
14808 14810 } else {
14809 14811 dst = NULL;
14810 14812 }
14811 14813 if (*dstp != NULL)
14812 14814 mi_free(*dstp);
14813 14815 *dstp = dst;
14814 14816 *dstlenp = dst == NULL ? 0 : srclen;
14815 14817 return (B_TRUE);
14816 14818 }
14817 14819
14818 14820 /*
14819 14821 * Replace what is in *dst, *dstlen with the source.
14820 14822 * Assumes ip_allocbuf has already been called.
14821 14823 */
14822 14824 void
14823 14825 ip_savebuf(void **dstp, uint_t *dstlenp, boolean_t src_valid,
14824 14826 const void *src, uint_t srclen)
14825 14827 {
14826 14828 if (!src_valid)
14827 14829 srclen = 0;
14828 14830
14829 14831 ASSERT(*dstlenp == srclen);
14830 14832 if (src != NULL && srclen != 0)
14831 14833 bcopy(src, *dstp, srclen);
14832 14834 }
14833 14835
14834 14836 /*
14835 14837 * Free the storage pointed to by the members of an ip_pkt_t.
14836 14838 */
14837 14839 void
14838 14840 ip_pkt_free(ip_pkt_t *ipp)
14839 14841 {
14840 14842 uint_t fields = ipp->ipp_fields;
14841 14843
14842 14844 if (fields & IPPF_HOPOPTS) {
14843 14845 kmem_free(ipp->ipp_hopopts, ipp->ipp_hopoptslen);
14844 14846 ipp->ipp_hopopts = NULL;
14845 14847 ipp->ipp_hopoptslen = 0;
14846 14848 }
14847 14849 if (fields & IPPF_RTHDRDSTOPTS) {
14848 14850 kmem_free(ipp->ipp_rthdrdstopts, ipp->ipp_rthdrdstoptslen);
14849 14851 ipp->ipp_rthdrdstopts = NULL;
14850 14852 ipp->ipp_rthdrdstoptslen = 0;
14851 14853 }
14852 14854 if (fields & IPPF_DSTOPTS) {
14853 14855 kmem_free(ipp->ipp_dstopts, ipp->ipp_dstoptslen);
14854 14856 ipp->ipp_dstopts = NULL;
14855 14857 ipp->ipp_dstoptslen = 0;
14856 14858 }
14857 14859 if (fields & IPPF_RTHDR) {
14858 14860 kmem_free(ipp->ipp_rthdr, ipp->ipp_rthdrlen);
14859 14861 ipp->ipp_rthdr = NULL;
14860 14862 ipp->ipp_rthdrlen = 0;
14861 14863 }
14862 14864 if (fields & IPPF_IPV4_OPTIONS) {
14863 14865 kmem_free(ipp->ipp_ipv4_options, ipp->ipp_ipv4_options_len);
14864 14866 ipp->ipp_ipv4_options = NULL;
14865 14867 ipp->ipp_ipv4_options_len = 0;
14866 14868 }
14867 14869 if (fields & IPPF_LABEL_V4) {
14868 14870 kmem_free(ipp->ipp_label_v4, ipp->ipp_label_len_v4);
14869 14871 ipp->ipp_label_v4 = NULL;
14870 14872 ipp->ipp_label_len_v4 = 0;
14871 14873 }
14872 14874 if (fields & IPPF_LABEL_V6) {
14873 14875 kmem_free(ipp->ipp_label_v6, ipp->ipp_label_len_v6);
14874 14876 ipp->ipp_label_v6 = NULL;
14875 14877 ipp->ipp_label_len_v6 = 0;
14876 14878 }
14877 14879 ipp->ipp_fields &= ~(IPPF_HOPOPTS | IPPF_RTHDRDSTOPTS | IPPF_DSTOPTS |
14878 14880 IPPF_RTHDR | IPPF_IPV4_OPTIONS | IPPF_LABEL_V4 | IPPF_LABEL_V6);
14879 14881 }
14880 14882
14881 14883 /*
14882 14884 * Copy from src to dst and allocate as needed.
14883 14885 * Returns zero or ENOMEM.
14884 14886 *
14885 14887 * The caller must initialize dst to zero.
14886 14888 */
14887 14889 int
14888 14890 ip_pkt_copy(ip_pkt_t *src, ip_pkt_t *dst, int kmflag)
14889 14891 {
14890 14892 uint_t fields = src->ipp_fields;
14891 14893
14892 14894 /* Start with fields that don't require memory allocation */
14893 14895 dst->ipp_fields = fields &
14894 14896 ~(IPPF_HOPOPTS | IPPF_RTHDRDSTOPTS | IPPF_DSTOPTS |
14895 14897 IPPF_RTHDR | IPPF_IPV4_OPTIONS | IPPF_LABEL_V4 | IPPF_LABEL_V6);
14896 14898
14897 14899 dst->ipp_addr = src->ipp_addr;
14898 14900 dst->ipp_unicast_hops = src->ipp_unicast_hops;
14899 14901 dst->ipp_hoplimit = src->ipp_hoplimit;
14900 14902 dst->ipp_tclass = src->ipp_tclass;
14901 14903 dst->ipp_type_of_service = src->ipp_type_of_service;
14902 14904
14903 14905 if (!(fields & (IPPF_HOPOPTS | IPPF_RTHDRDSTOPTS | IPPF_DSTOPTS |
14904 14906 IPPF_RTHDR | IPPF_IPV4_OPTIONS | IPPF_LABEL_V4 | IPPF_LABEL_V6)))
14905 14907 return (0);
14906 14908
14907 14909 if (fields & IPPF_HOPOPTS) {
14908 14910 dst->ipp_hopopts = kmem_alloc(src->ipp_hopoptslen, kmflag);
14909 14911 if (dst->ipp_hopopts == NULL) {
14910 14912 ip_pkt_free(dst);
14911 14913 return (ENOMEM);
14912 14914 }
14913 14915 dst->ipp_fields |= IPPF_HOPOPTS;
14914 14916 bcopy(src->ipp_hopopts, dst->ipp_hopopts,
14915 14917 src->ipp_hopoptslen);
14916 14918 dst->ipp_hopoptslen = src->ipp_hopoptslen;
14917 14919 }
14918 14920 if (fields & IPPF_RTHDRDSTOPTS) {
14919 14921 dst->ipp_rthdrdstopts = kmem_alloc(src->ipp_rthdrdstoptslen,
14920 14922 kmflag);
14921 14923 if (dst->ipp_rthdrdstopts == NULL) {
14922 14924 ip_pkt_free(dst);
14923 14925 return (ENOMEM);
14924 14926 }
14925 14927 dst->ipp_fields |= IPPF_RTHDRDSTOPTS;
14926 14928 bcopy(src->ipp_rthdrdstopts, dst->ipp_rthdrdstopts,
14927 14929 src->ipp_rthdrdstoptslen);
14928 14930 dst->ipp_rthdrdstoptslen = src->ipp_rthdrdstoptslen;
14929 14931 }
14930 14932 if (fields & IPPF_DSTOPTS) {
14931 14933 dst->ipp_dstopts = kmem_alloc(src->ipp_dstoptslen, kmflag);
14932 14934 if (dst->ipp_dstopts == NULL) {
14933 14935 ip_pkt_free(dst);
14934 14936 return (ENOMEM);
14935 14937 }
14936 14938 dst->ipp_fields |= IPPF_DSTOPTS;
14937 14939 bcopy(src->ipp_dstopts, dst->ipp_dstopts,
14938 14940 src->ipp_dstoptslen);
14939 14941 dst->ipp_dstoptslen = src->ipp_dstoptslen;
14940 14942 }
14941 14943 if (fields & IPPF_RTHDR) {
14942 14944 dst->ipp_rthdr = kmem_alloc(src->ipp_rthdrlen, kmflag);
14943 14945 if (dst->ipp_rthdr == NULL) {
14944 14946 ip_pkt_free(dst);
14945 14947 return (ENOMEM);
14946 14948 }
14947 14949 dst->ipp_fields |= IPPF_RTHDR;
14948 14950 bcopy(src->ipp_rthdr, dst->ipp_rthdr,
14949 14951 src->ipp_rthdrlen);
14950 14952 dst->ipp_rthdrlen = src->ipp_rthdrlen;
14951 14953 }
14952 14954 if (fields & IPPF_IPV4_OPTIONS) {
14953 14955 dst->ipp_ipv4_options = kmem_alloc(src->ipp_ipv4_options_len,
14954 14956 kmflag);
14955 14957 if (dst->ipp_ipv4_options == NULL) {
14956 14958 ip_pkt_free(dst);
14957 14959 return (ENOMEM);
14958 14960 }
14959 14961 dst->ipp_fields |= IPPF_IPV4_OPTIONS;
14960 14962 bcopy(src->ipp_ipv4_options, dst->ipp_ipv4_options,
14961 14963 src->ipp_ipv4_options_len);
14962 14964 dst->ipp_ipv4_options_len = src->ipp_ipv4_options_len;
14963 14965 }
14964 14966 if (fields & IPPF_LABEL_V4) {
14965 14967 dst->ipp_label_v4 = kmem_alloc(src->ipp_label_len_v4, kmflag);
14966 14968 if (dst->ipp_label_v4 == NULL) {
14967 14969 ip_pkt_free(dst);
14968 14970 return (ENOMEM);
14969 14971 }
14970 14972 dst->ipp_fields |= IPPF_LABEL_V4;
14971 14973 bcopy(src->ipp_label_v4, dst->ipp_label_v4,
14972 14974 src->ipp_label_len_v4);
14973 14975 dst->ipp_label_len_v4 = src->ipp_label_len_v4;
14974 14976 }
14975 14977 if (fields & IPPF_LABEL_V6) {
14976 14978 dst->ipp_label_v6 = kmem_alloc(src->ipp_label_len_v6, kmflag);
14977 14979 if (dst->ipp_label_v6 == NULL) {
14978 14980 ip_pkt_free(dst);
14979 14981 return (ENOMEM);
14980 14982 }
14981 14983 dst->ipp_fields |= IPPF_LABEL_V6;
14982 14984 bcopy(src->ipp_label_v6, dst->ipp_label_v6,
14983 14985 src->ipp_label_len_v6);
14984 14986 dst->ipp_label_len_v6 = src->ipp_label_len_v6;
14985 14987 }
14986 14988 if (fields & IPPF_FRAGHDR) {
14987 14989 dst->ipp_fraghdr = kmem_alloc(src->ipp_fraghdrlen, kmflag);
14988 14990 if (dst->ipp_fraghdr == NULL) {
14989 14991 ip_pkt_free(dst);
14990 14992 return (ENOMEM);
14991 14993 }
14992 14994 dst->ipp_fields |= IPPF_FRAGHDR;
14993 14995 bcopy(src->ipp_fraghdr, dst->ipp_fraghdr,
14994 14996 src->ipp_fraghdrlen);
14995 14997 dst->ipp_fraghdrlen = src->ipp_fraghdrlen;
14996 14998 }
14997 14999 return (0);
14998 15000 }
14999 15001
15000 15002 /*
15001 15003 * Returns INADDR_ANY if no source route
15002 15004 */
15003 15005 ipaddr_t
15004 15006 ip_pkt_source_route_v4(const ip_pkt_t *ipp)
15005 15007 {
15006 15008 ipaddr_t nexthop = INADDR_ANY;
15007 15009 ipoptp_t opts;
15008 15010 uchar_t *opt;
15009 15011 uint8_t optval;
15010 15012 uint8_t optlen;
15011 15013 uint32_t totallen;
15012 15014
15013 15015 if (!(ipp->ipp_fields & IPPF_IPV4_OPTIONS))
15014 15016 return (INADDR_ANY);
15015 15017
15016 15018 totallen = ipp->ipp_ipv4_options_len;
15017 15019 if (totallen & 0x3)
15018 15020 return (INADDR_ANY);
15019 15021
15020 15022 for (optval = ipoptp_first2(&opts, totallen, ipp->ipp_ipv4_options);
15021 15023 optval != IPOPT_EOL;
15022 15024 optval = ipoptp_next(&opts)) {
15023 15025 opt = opts.ipoptp_cur;
15024 15026 switch (optval) {
15025 15027 uint8_t off;
15026 15028 case IPOPT_SSRR:
15027 15029 case IPOPT_LSRR:
15028 15030 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
15029 15031 break;
15030 15032 }
15031 15033 optlen = opts.ipoptp_len;
15032 15034 off = opt[IPOPT_OFFSET];
15033 15035 off--;
15034 15036 if (optlen < IP_ADDR_LEN ||
15035 15037 off > optlen - IP_ADDR_LEN) {
15036 15038 /* End of source route */
15037 15039 break;
15038 15040 }
15039 15041 bcopy((char *)opt + off, &nexthop, IP_ADDR_LEN);
15040 15042 if (nexthop == htonl(INADDR_LOOPBACK)) {
15041 15043 /* Ignore */
15042 15044 nexthop = INADDR_ANY;
15043 15045 break;
15044 15046 }
15045 15047 break;
15046 15048 }
15047 15049 }
15048 15050 return (nexthop);
15049 15051 }
15050 15052
15051 15053 /*
15052 15054 * Reverse a source route.
15053 15055 */
15054 15056 void
15055 15057 ip_pkt_source_route_reverse_v4(ip_pkt_t *ipp)
15056 15058 {
15057 15059 ipaddr_t tmp;
15058 15060 ipoptp_t opts;
15059 15061 uchar_t *opt;
15060 15062 uint8_t optval;
15061 15063 uint32_t totallen;
15062 15064
15063 15065 if (!(ipp->ipp_fields & IPPF_IPV4_OPTIONS))
15064 15066 return;
15065 15067
15066 15068 totallen = ipp->ipp_ipv4_options_len;
15067 15069 if (totallen & 0x3)
15068 15070 return;
15069 15071
15070 15072 for (optval = ipoptp_first2(&opts, totallen, ipp->ipp_ipv4_options);
15071 15073 optval != IPOPT_EOL;
15072 15074 optval = ipoptp_next(&opts)) {
15073 15075 uint8_t off1, off2;
15074 15076
15075 15077 opt = opts.ipoptp_cur;
15076 15078 switch (optval) {
15077 15079 case IPOPT_SSRR:
15078 15080 case IPOPT_LSRR:
15079 15081 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
15080 15082 break;
15081 15083 }
15082 15084 off1 = IPOPT_MINOFF_SR - 1;
15083 15085 off2 = opt[IPOPT_OFFSET] - IP_ADDR_LEN - 1;
15084 15086 while (off2 > off1) {
15085 15087 bcopy(opt + off2, &tmp, IP_ADDR_LEN);
15086 15088 bcopy(opt + off1, opt + off2, IP_ADDR_LEN);
15087 15089 bcopy(&tmp, opt + off2, IP_ADDR_LEN);
15088 15090 off2 -= IP_ADDR_LEN;
15089 15091 off1 += IP_ADDR_LEN;
15090 15092 }
15091 15093 opt[IPOPT_OFFSET] = IPOPT_MINOFF_SR;
15092 15094 break;
15093 15095 }
15094 15096 }
15095 15097 }
15096 15098
15097 15099 /*
15098 15100 * Returns NULL if no routing header
15099 15101 */
15100 15102 in6_addr_t *
15101 15103 ip_pkt_source_route_v6(const ip_pkt_t *ipp)
15102 15104 {
15103 15105 in6_addr_t *nexthop = NULL;
15104 15106 ip6_rthdr0_t *rthdr;
15105 15107
15106 15108 if (!(ipp->ipp_fields & IPPF_RTHDR))
15107 15109 return (NULL);
15108 15110
15109 15111 rthdr = (ip6_rthdr0_t *)ipp->ipp_rthdr;
15110 15112 if (rthdr->ip6r0_segleft == 0)
15111 15113 return (NULL);
15112 15114
15113 15115 nexthop = (in6_addr_t *)((char *)rthdr + sizeof (*rthdr));
15114 15116 return (nexthop);
15115 15117 }
15116 15118
15117 15119 zoneid_t
15118 15120 ip_get_zoneid_v4(ipaddr_t addr, mblk_t *mp, ip_recv_attr_t *ira,
15119 15121 zoneid_t lookup_zoneid)
15120 15122 {
15121 15123 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
15122 15124 ire_t *ire;
15123 15125 int ire_flags = MATCH_IRE_TYPE;
15124 15126 zoneid_t zoneid = ALL_ZONES;
15125 15127
15126 15128 if (is_system_labeled() && !tsol_can_accept_raw(mp, ira, B_FALSE))
15127 15129 return (ALL_ZONES);
15128 15130
15129 15131 if (lookup_zoneid != ALL_ZONES)
15130 15132 ire_flags |= MATCH_IRE_ZONEONLY;
15131 15133 ire = ire_ftable_lookup_v4(addr, 0, 0, IRE_LOCAL | IRE_LOOPBACK,
15132 15134 NULL, lookup_zoneid, NULL, ire_flags, 0, ipst, NULL);
15133 15135 if (ire != NULL) {
15134 15136 zoneid = IP_REAL_ZONEID(ire->ire_zoneid, ipst);
15135 15137 ire_refrele(ire);
15136 15138 }
15137 15139 return (zoneid);
15138 15140 }
15139 15141
15140 15142 zoneid_t
15141 15143 ip_get_zoneid_v6(in6_addr_t *addr, mblk_t *mp, const ill_t *ill,
15142 15144 ip_recv_attr_t *ira, zoneid_t lookup_zoneid)
15143 15145 {
15144 15146 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
15145 15147 ire_t *ire;
15146 15148 int ire_flags = MATCH_IRE_TYPE;
15147 15149 zoneid_t zoneid = ALL_ZONES;
15148 15150
15149 15151 if (is_system_labeled() && !tsol_can_accept_raw(mp, ira, B_FALSE))
15150 15152 return (ALL_ZONES);
15151 15153
15152 15154 if (IN6_IS_ADDR_LINKLOCAL(addr))
15153 15155 ire_flags |= MATCH_IRE_ILL;
15154 15156
15155 15157 if (lookup_zoneid != ALL_ZONES)
15156 15158 ire_flags |= MATCH_IRE_ZONEONLY;
15157 15159 ire = ire_ftable_lookup_v6(addr, NULL, NULL, IRE_LOCAL | IRE_LOOPBACK,
15158 15160 ill, lookup_zoneid, NULL, ire_flags, 0, ipst, NULL);
15159 15161 if (ire != NULL) {
15160 15162 zoneid = IP_REAL_ZONEID(ire->ire_zoneid, ipst);
15161 15163 ire_refrele(ire);
15162 15164 }
15163 15165 return (zoneid);
15164 15166 }
15165 15167
15166 15168 /*
15167 15169 * IP obserability hook support functions.
15168 15170 */
15169 15171 static void
15170 15172 ipobs_init(ip_stack_t *ipst)
15171 15173 {
15172 15174 netid_t id;
15173 15175
15174 15176 id = net_getnetidbynetstackid(ipst->ips_netstack->netstack_stackid);
15175 15177
15176 15178 ipst->ips_ip4_observe_pr = net_protocol_lookup(id, NHF_INET);
15177 15179 VERIFY(ipst->ips_ip4_observe_pr != NULL);
15178 15180
15179 15181 ipst->ips_ip6_observe_pr = net_protocol_lookup(id, NHF_INET6);
15180 15182 VERIFY(ipst->ips_ip6_observe_pr != NULL);
15181 15183 }
15182 15184
15183 15185 static void
15184 15186 ipobs_fini(ip_stack_t *ipst)
15185 15187 {
15186 15188
15187 15189 VERIFY(net_protocol_release(ipst->ips_ip4_observe_pr) == 0);
15188 15190 VERIFY(net_protocol_release(ipst->ips_ip6_observe_pr) == 0);
15189 15191 }
15190 15192
15191 15193 /*
15192 15194 * hook_pkt_observe_t is composed in network byte order so that the
15193 15195 * entire mblk_t chain handed into hook_run can be used as-is.
15194 15196 * The caveat is that use of the fields, such as the zone fields,
15195 15197 * requires conversion into host byte order first.
15196 15198 */
15197 15199 void
15198 15200 ipobs_hook(mblk_t *mp, int htype, zoneid_t zsrc, zoneid_t zdst,
15199 15201 const ill_t *ill, ip_stack_t *ipst)
15200 15202 {
15201 15203 hook_pkt_observe_t *hdr;
15202 15204 uint64_t grifindex;
15203 15205 mblk_t *imp;
15204 15206
15205 15207 imp = allocb(sizeof (*hdr), BPRI_HI);
15206 15208 if (imp == NULL)
15207 15209 return;
15208 15210
15209 15211 hdr = (hook_pkt_observe_t *)imp->b_rptr;
15210 15212 /*
15211 15213 * b_wptr is set to make the apparent size of the data in the mblk_t
15212 15214 * to exclude the pointers at the end of hook_pkt_observer_t.
15213 15215 */
15214 15216 imp->b_wptr = imp->b_rptr + sizeof (dl_ipnetinfo_t);
15215 15217 imp->b_cont = mp;
15216 15218
15217 15219 ASSERT(DB_TYPE(mp) == M_DATA);
15218 15220
15219 15221 if (IS_UNDER_IPMP(ill))
15220 15222 grifindex = ipmp_ill_get_ipmp_ifindex(ill);
15221 15223 else
15222 15224 grifindex = 0;
15223 15225
15224 15226 hdr->hpo_version = 1;
15225 15227 hdr->hpo_htype = htons(htype);
15226 15228 hdr->hpo_pktlen = htonl((ulong_t)msgdsize(mp));
15227 15229 hdr->hpo_ifindex = htonl(ill->ill_phyint->phyint_ifindex);
15228 15230 hdr->hpo_grifindex = htonl(grifindex);
15229 15231 hdr->hpo_zsrc = htonl(zsrc);
15230 15232 hdr->hpo_zdst = htonl(zdst);
15231 15233 hdr->hpo_pkt = imp;
15232 15234 hdr->hpo_ctx = ipst->ips_netstack;
15233 15235
15234 15236 if (ill->ill_isv6) {
15235 15237 hdr->hpo_family = AF_INET6;
15236 15238 (void) hook_run(ipst->ips_ipv6_net_data->netd_hooks,
15237 15239 ipst->ips_ipv6observing, (hook_data_t)hdr);
15238 15240 } else {
15239 15241 hdr->hpo_family = AF_INET;
15240 15242 (void) hook_run(ipst->ips_ipv4_net_data->netd_hooks,
15241 15243 ipst->ips_ipv4observing, (hook_data_t)hdr);
15242 15244 }
15243 15245
15244 15246 imp->b_cont = NULL;
15245 15247 freemsg(imp);
15246 15248 }
15247 15249
15248 15250 /*
15249 15251 * Utility routine that checks if `v4srcp' is a valid address on underlying
15250 15252 * interface `ill'. If `ipifp' is non-NULL, it's set to a held ipif
15251 15253 * associated with `v4srcp' on success. NOTE: if this is not called from
15252 15254 * inside the IPSQ (ill_g_lock is not held), `ill' may be removed from the
15253 15255 * group during or after this lookup.
15254 15256 */
15255 15257 boolean_t
15256 15258 ipif_lookup_testaddr_v4(ill_t *ill, const in_addr_t *v4srcp, ipif_t **ipifp)
15257 15259 {
15258 15260 ipif_t *ipif;
15259 15261
15260 15262 ipif = ipif_lookup_addr_exact(*v4srcp, ill, ill->ill_ipst);
15261 15263 if (ipif != NULL) {
15262 15264 if (ipifp != NULL)
15263 15265 *ipifp = ipif;
15264 15266 else
15265 15267 ipif_refrele(ipif);
15266 15268 return (B_TRUE);
15267 15269 }
15268 15270
15269 15271 ip1dbg(("ipif_lookup_testaddr_v4: cannot find ipif for src %x\n",
15270 15272 *v4srcp));
15271 15273 return (B_FALSE);
15272 15274 }
15273 15275
15274 15276 /*
15275 15277 * Transport protocol call back function for CPU state change.
15276 15278 */
15277 15279 /* ARGSUSED */
15278 15280 static int
15279 15281 ip_tp_cpu_update(cpu_setup_t what, int id, void *arg)
15280 15282 {
15281 15283 processorid_t cpu_seqid;
15282 15284 netstack_handle_t nh;
15283 15285 netstack_t *ns;
15284 15286
15285 15287 ASSERT(MUTEX_HELD(&cpu_lock));
15286 15288
15287 15289 switch (what) {
15288 15290 case CPU_CONFIG:
15289 15291 case CPU_ON:
15290 15292 case CPU_INIT:
15291 15293 case CPU_CPUPART_IN:
15292 15294 cpu_seqid = cpu[id]->cpu_seqid;
15293 15295 netstack_next_init(&nh);
15294 15296 while ((ns = netstack_next(&nh)) != NULL) {
15295 15297 tcp_stack_cpu_add(ns->netstack_tcp, cpu_seqid);
15296 15298 sctp_stack_cpu_add(ns->netstack_sctp, cpu_seqid);
15297 15299 udp_stack_cpu_add(ns->netstack_udp, cpu_seqid);
15298 15300 netstack_rele(ns);
15299 15301 }
15300 15302 netstack_next_fini(&nh);
15301 15303 break;
15302 15304 case CPU_UNCONFIG:
15303 15305 case CPU_OFF:
15304 15306 case CPU_CPUPART_OUT:
15305 15307 /*
15306 15308 * Nothing to do. We don't remove the per CPU stats from
15307 15309 * the IP stack even when the CPU goes offline.
15308 15310 */
15309 15311 break;
15310 15312 default:
15311 15313 break;
15312 15314 }
15313 15315 return (0);
15314 15316 }
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