1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2013 by Delphix. All rights reserved.
24 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
25 */
26 /* Copyright (c) 1990 Mentat Inc. */
27
28 #include <inet/ip.h>
29 #include <inet/ip6.h>
30 #include <inet/ip_if.h>
31 #include <inet/ip_ire.h>
32 #include <inet/ipclassifier.h>
33 #include <inet/ip_impl.h>
34 #include <inet/tunables.h>
35 #include <sys/sunddi.h>
36 #include <sys/policy.h>
37
38 /* How long, in seconds, we allow frags to hang around. */
39 #define IP_REASM_TIMEOUT 15
40 #define IPV6_REASM_TIMEOUT 60
41
42 /*
43 * Set ip{,6}_forwarding values. If the value is being set on an ill,
44 * find the ill and set the value on it. On the other hand if we are modifying
45 * global property, modify the global value and set the value on all the ills.
46 */
47 /* ARGSUSED */
48 static int
49 ip_set_forwarding(netstack_t *stack, cred_t *cr, mod_prop_info_t *pinfo,
50 const char *ifname, const void* pval, uint_t flags)
51 {
52 char *end;
53 unsigned long new_value;
54 boolean_t per_ill, isv6;
55 ill_walk_context_t ctx;
56 ill_t *ill;
57 ip_stack_t *ipst = stack->netstack_ip;
58
59 if (flags & MOD_PROP_DEFAULT) {
60 new_value = pinfo->prop_def_bval;
61 } else {
62 if (ddi_strtoul(pval, &end, 10, &new_value) != 0 ||
63 *end != '\0')
64 return (EINVAL);
65 if (new_value != B_TRUE && new_value != B_FALSE)
66 return (EINVAL);
67 }
68
69 per_ill = (ifname != NULL && ifname[0] != '\0');
70 /*
71 * if it's not per ill then set the global property and bring all the
72 * ills up to date with the new global value.
73 */
74 if (!per_ill)
75 pinfo->prop_cur_bval = (new_value == 1 ? B_TRUE : B_FALSE);
76
77 isv6 = (pinfo->mpi_proto == MOD_PROTO_IPV6 ? B_TRUE : B_FALSE);
78 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
79 if (isv6)
80 ill = ILL_START_WALK_V6(&ctx, ipst);
81 else
82 ill = ILL_START_WALK_V4(&ctx, ipst);
83
84 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
85 /*
86 * if the property needs to be set on a particular
87 * interface, look for that interface.
88 */
89 if (per_ill && strcmp(ifname, ill->ill_name) != 0)
90 continue;
91 (void) ill_forward_set(ill, new_value != 0);
92 }
93 rw_exit(&ipst->ips_ill_g_lock);
94
95 return (0);
96 }
97
98 static int
99 ip_get_forwarding(netstack_t *stack, mod_prop_info_t *pinfo, const char *ifname,
100 void *pval, uint_t pr_size, uint_t flags)
101 {
102 boolean_t value;
103 ill_walk_context_t ctx;
104 ill_t *ill;
105 ip_stack_t *ipst = stack->netstack_ip;
106 boolean_t get_def = (flags & MOD_PROP_DEFAULT);
107 boolean_t get_perm = (flags & MOD_PROP_PERM);
108 boolean_t isv6;
109 size_t nbytes = 0;
110
111 if (get_perm) {
112 nbytes = snprintf(pval, pr_size, "%d", MOD_PROP_PERM_RW);
113 goto ret;
114 } else if (get_def) {
115 nbytes = snprintf(pval, pr_size, "%d", pinfo->prop_def_bval);
116 goto ret;
117 }
118
119 /*
120 * if per interface value is not asked for return the current
121 * global value
122 */
123 if (ifname == NULL || ifname[0] == '\0') {
124 nbytes = snprintf(pval, pr_size, "%d", pinfo->prop_cur_bval);
125 goto ret;
126 }
127
128 isv6 = (pinfo->mpi_proto == MOD_PROTO_IPV6 ? B_TRUE : B_FALSE);
129 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
130 if (isv6)
131 ill = ILL_START_WALK_V6(&ctx, ipst);
132 else
133 ill = ILL_START_WALK_V4(&ctx, ipst);
134 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
135 /*
136 * if the property needs to be obtained on a particular
137 * interface, look for that interface.
138 */
139 if (strcmp(ifname, ill->ill_name) == 0)
140 break;
141 }
142 if (ill == NULL) {
143 rw_exit(&ipst->ips_ill_g_lock);
144 return (ENXIO);
145 }
146 value = ((ill->ill_flags & ILLF_ROUTER) ? B_TRUE : B_FALSE);
147 rw_exit(&ipst->ips_ill_g_lock);
148 nbytes = snprintf(pval, pr_size, "%d", value);
149 ret:
150 if (nbytes >= pr_size)
151 return (ENOBUFS);
152 return (0);
153 }
154
155 /*
156 * `ip_debug' is a global variable. So, we will be modifying the global
157 * variable here.
158 */
159 /* ARGSUSED */
160 int
161 ip_set_debug(netstack_t *stack, cred_t *cr, mod_prop_info_t *pinfo,
162 const char *ifname, const void* pval, uint_t flags)
163 {
164 unsigned long new_value;
165 int err;
166
167 if (cr != NULL && secpolicy_net_config(cr, B_FALSE) != 0)
168 return (EPERM);
169
170 if ((err = mod_uint32_value(pval, pinfo, flags, &new_value)) != 0)
171 return (err);
172 ip_debug = (uint32_t)new_value;
173 return (0);
174 }
175
176 /*
177 * ip_debug is a global property. For default, permission and value range
178 * we retrieve the value from `pinfo'. However for the current value we
179 * retrieve the value from the global variable `ip_debug'
180 */
181 /* ARGSUSED */
182 int
183 ip_get_debug(netstack_t *stack, mod_prop_info_t *pinfo, const char *ifname,
184 void *pval, uint_t psize, uint_t flags)
185 {
186 boolean_t get_def = (flags & MOD_PROP_DEFAULT);
187 boolean_t get_perm = (flags & MOD_PROP_PERM);
188 boolean_t get_range = (flags & MOD_PROP_POSSIBLE);
189 size_t nbytes;
190
191 bzero(pval, psize);
192 if (get_perm)
193 nbytes = snprintf(pval, psize, "%u", MOD_PROP_PERM_RW);
194 else if (get_range)
195 nbytes = snprintf(pval, psize, "%u-%u",
196 pinfo->prop_min_uval, pinfo->prop_max_uval);
197 else if (get_def)
198 nbytes = snprintf(pval, psize, "%u", pinfo->prop_def_uval);
199 else
200 nbytes = snprintf(pval, psize, "%u", ip_debug);
201 if (nbytes >= psize)
202 return (ENOBUFS);
203 return (0);
204 }
205
206 /*
207 * Set the CGTP (multirouting) filtering status. If the status is changed
208 * from active to transparent or from transparent to active, forward the
209 * new status to the filtering module (if loaded).
210 */
211 /* ARGSUSED */
212 static int
213 ip_set_cgtp_filter(netstack_t *stack, cred_t *cr, mod_prop_info_t *pinfo,
214 const char *ifname, const void* pval, uint_t flags)
215 {
216 unsigned long new_value;
217 ip_stack_t *ipst = stack->netstack_ip;
218 char *end;
219
220 if (flags & MOD_PROP_DEFAULT) {
221 new_value = pinfo->prop_def_bval;
222 } else {
223 if (ddi_strtoul(pval, &end, 10, &new_value) != 0 ||
224 *end != '\0' || new_value > 1) {
225 return (EINVAL);
226 }
227 }
228 if (!pinfo->prop_cur_bval && new_value) {
229 cmn_err(CE_NOTE, "IP: enabling CGTP filtering%s",
230 ipst->ips_ip_cgtp_filter_ops == NULL ?
231 " (module not loaded)" : "");
232 }
233 if (pinfo->prop_cur_bval && !new_value) {
234 cmn_err(CE_NOTE, "IP: disabling CGTP filtering%s",
235 ipst->ips_ip_cgtp_filter_ops == NULL ?
236 " (module not loaded)" : "");
237 }
238 if (ipst->ips_ip_cgtp_filter_ops != NULL) {
239 int res;
240 netstackid_t stackid = ipst->ips_netstack->netstack_stackid;
241
242 res = ipst->ips_ip_cgtp_filter_ops->cfo_change_state(stackid,
243 new_value);
244 if (res)
245 return (res);
246 }
247 pinfo->prop_cur_bval = (new_value == 1 ? B_TRUE : B_FALSE);
248 ill_set_inputfn_all(ipst);
249 return (0);
250 }
251
252 /*
253 * Retrieve the default MTU or min-max MTU range for a given interface.
254 *
255 * -- ill_max_frag value tells us the maximum MTU that can be handled by the
256 * datalink. This value is advertised by the driver via DLPI messages
257 * (DL_NOTE_SDU_SIZE/DL_INFO_ACK).
258 *
259 * -- ill_current_frag for the most link-types will be same as ill_max_frag
260 * to begin with. However it is dynamically computed for some link-types
261 * like tunnels, based on the tunnel PMTU.
262 *
263 * -- ill_mtu is the user set MTU using SIOCSLIFMTU and must lie between
264 * (IPV6_MIN_MTU/IP_MIN_MTU) and ill_max_frag.
265 *
266 * -- ill_user_mtu is set by in.ndpd using SIOCSLIFLNKINFO and must lie between
267 * (IPV6_MIN_MTU/IP_MIN_MTU) and ill_max_frag.
268 */
269 int
270 ip_get_mtu(netstack_t *stack, mod_prop_info_t *pinfo, const char *ifname,
271 void *pval, uint_t psize, uint_t flags)
272 {
273 ill_walk_context_t ctx;
274 ill_t *ill;
275 ip_stack_t *ipst = stack->netstack_ip;
276 boolean_t isv6;
277 uint32_t max_mtu, def_mtu;
278 size_t nbytes = 0;
279
280 if (!(flags & (MOD_PROP_DEFAULT|MOD_PROP_POSSIBLE)))
281 return (ENOTSUP);
282
283 if (ifname == NULL || ifname[0] == '\0')
284 return (ENOTSUP);
285
286 isv6 = (pinfo->mpi_proto == MOD_PROTO_IPV6 ? B_TRUE : B_FALSE);
287 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
288 if (isv6)
289 ill = ILL_START_WALK_V6(&ctx, ipst);
290 else
291 ill = ILL_START_WALK_V4(&ctx, ipst);
292 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
293 if (strcmp(ifname, ill->ill_name) == 0)
294 break;
295 }
296 if (ill == NULL) {
297 rw_exit(&ipst->ips_ill_g_lock);
298 return (ENXIO);
299 }
300 max_mtu = ill->ill_max_frag;
301 def_mtu = ill->ill_current_frag;
302 rw_exit(&ipst->ips_ill_g_lock);
303
304 if (flags & MOD_PROP_DEFAULT) {
305 nbytes = snprintf(pval, psize, "%u", def_mtu);
306 } else if (flags & MOD_PROP_POSSIBLE) {
307 uint32_t min_mtu;
308
309 min_mtu = isv6 ? IPV6_MIN_MTU : IP_MIN_MTU;
310 nbytes = snprintf(pval, psize, "%u-%u", min_mtu, max_mtu);
311 } else {
312 return (ENOTSUP);
313 }
314
315 if (nbytes >= psize)
316 return (ENOBUFS);
317 return (0);
318 }
319
320 /*
321 * See the comments for ip[6]_strict_src_multihoming for an explanation
322 * of the semanitcs.
323 */
324 void
325 ip_set_src_multihoming_common(ulong_t new_value, ulong_t old_value,
326 boolean_t isv6, ip_stack_t *ipst)
327 {
328 if (isv6)
329 ipst->ips_ipv6_strict_src_multihoming = new_value;
330 else
331 ipst->ips_ip_strict_src_multihoming = new_value;
332 if (new_value != old_value) {
333 if (!isv6) {
334 if (old_value == 0) {
335 ire_walk_v4(ip_ire_rebind_walker, NULL,
336 ALL_ZONES, ipst);
337 } else if (new_value == 0) {
338 ire_walk_v4(ip_ire_unbind_walker, NULL,
339 ALL_ZONES, ipst);
340 }
341 ipcl_walk(conn_ire_revalidate, (void *)B_FALSE, ipst);
342 } else {
343 if (old_value == 0) {
344 ire_walk_v6(ip_ire_rebind_walker, NULL,
345 ALL_ZONES, ipst);
346 } else if (new_value == 0) {
347 ire_walk_v6(ip_ire_unbind_walker, NULL,
348 ALL_ZONES, ipst);
349 }
350 ipcl_walk(conn_ire_revalidate, (void *)B_TRUE, ipst);
351 }
352 }
353 }
354
355 /* ARGSUSED */
356 static int
357 ip_set_src_multihoming(netstack_t *stack, cred_t *cr, mod_prop_info_t *pinfo,
358 const char *ifname, const void* pval, uint_t flags)
359 {
360 unsigned long new_value, old_value;
361 boolean_t isv6;
362 ip_stack_t *ipst = stack->netstack_ip;
363 int err;
364
365 old_value = pinfo->prop_cur_uval;
366
367 if ((err = mod_uint32_value(pval, pinfo, flags, &new_value)) != 0)
368 return (err);
369 pinfo->prop_cur_uval = new_value;
370 isv6 = (strcmp(pinfo->mpi_name, "ip6_strict_src_multihoming") == 0);
371 ip_set_src_multihoming_common(new_value, old_value, isv6, ipst);
372 return (0);
373 }
374
375
376 /* ARGSUSED */
377 static int
378 ip_set_hostmodel(netstack_t *stack, cred_t *cr, mod_prop_info_t *pinfo,
379 const char *ifname, const void* pval, uint_t flags)
380 {
381 ip_hostmodel_t new_value, old_value;
382 ip_stack_t *ipst = stack->netstack_ip;
383 uint32_t old_src_multihoming;
384 int err;
385 ulong_t tmp;
386 boolean_t isv6;
387
388 old_value = pinfo->prop_cur_uval;
389
390 if ((err = mod_uint32_value(pval, pinfo, flags, &tmp)) != 0)
391 return (err);
392 new_value = tmp;
393 pinfo->prop_cur_uval = new_value;
394
395 switch (old_value) {
396 case IP_WEAK_ES:
397 old_src_multihoming = 0;
398 break;
399 case IP_SRC_PRI_ES:
400 old_src_multihoming = 1;
401 break;
402 case IP_STRONG_ES:
403 old_src_multihoming = 2;
404 break;
405 default:
406 ASSERT(0);
407 old_src_multihoming = IP_MAXVAL_ES;
408 break;
409 }
410 /*
411 * Changes to src_multihoming may require ire's to be rebound/unbound,
412 * and also require generation number resets. Changes to dst_multihoming
413 * require a simple reset of the value.
414 */
415 isv6 = (pinfo->mpi_proto == MOD_PROTO_IPV6);
416 if (new_value != old_value) {
417 switch (new_value) {
418 case IP_WEAK_ES:
419 ip_set_src_multihoming_common(0, old_src_multihoming,
420 isv6, ipst);
421 if (isv6)
422 ipst->ips_ipv6_strict_dst_multihoming = 0;
423 else
424 ipst->ips_ip_strict_dst_multihoming = 0;
425 break;
426 case IP_SRC_PRI_ES:
427 ip_set_src_multihoming_common(1, old_src_multihoming,
428 isv6, ipst);
429 if (isv6)
430 ipst->ips_ipv6_strict_dst_multihoming = 0;
431 else
432 ipst->ips_ip_strict_dst_multihoming = 0;
433 break;
434 case IP_STRONG_ES:
435 ip_set_src_multihoming_common(2, old_src_multihoming,
436 isv6, ipst);
437 if (isv6)
438 ipst->ips_ipv6_strict_dst_multihoming = 1;
439 else
440 ipst->ips_ip_strict_dst_multihoming = 1;
441 break;
442 default:
443 return (EINVAL);
444 }
445 }
446 return (0);
447 }
448
449 /* ARGSUSED */
450 int
451 ip_get_hostmodel(netstack_t *stack, mod_prop_info_t *pinfo, const char *ifname,
452 void *pval, uint_t psize, uint_t flags)
453 {
454 boolean_t isv6 = (pinfo->mpi_proto == MOD_PROTO_IPV6);
455 ip_stack_t *ipst = stack->netstack_ip;
456 ip_hostmodel_t hostmodel;
457
458 if (psize < sizeof (hostmodel))
459 return (ENOBUFS);
460 bzero(pval, psize);
461 if (!isv6) {
462 if (ipst->ips_ip_strict_src_multihoming == 0 &&
463 ipst->ips_ip_strict_dst_multihoming == 0)
464 hostmodel = IP_WEAK_ES;
465 else if (ipst->ips_ip_strict_src_multihoming == 1 &&
466 ipst->ips_ip_strict_dst_multihoming == 0)
467 hostmodel = IP_SRC_PRI_ES;
468 else if (ipst->ips_ip_strict_src_multihoming == 2 &&
469 ipst->ips_ip_strict_dst_multihoming == 1)
470 hostmodel = IP_STRONG_ES;
471 else
472 hostmodel = IP_MAXVAL_ES;
473 } else {
474 if (ipst->ips_ipv6_strict_src_multihoming == 0 &&
475 ipst->ips_ipv6_strict_dst_multihoming == 0)
476 hostmodel = IP_WEAK_ES;
477 else if (ipst->ips_ipv6_strict_src_multihoming == 1 &&
478 ipst->ips_ipv6_strict_dst_multihoming == 0)
479 hostmodel = IP_SRC_PRI_ES;
480 else if (ipst->ips_ipv6_strict_src_multihoming == 2 &&
481 ipst->ips_ipv6_strict_dst_multihoming == 1)
482 hostmodel = IP_STRONG_ES;
483 else
484 hostmodel = IP_MAXVAL_ES;
485 }
486 bcopy(&hostmodel, pval, sizeof (hostmodel));
487 return (0);
488 }
489
490 /*
491 * All of these are alterable, within the min/max values given, at run time.
492 *
493 * Note: All those tunables which do not start with "_" are Committed and
494 * therefore are public. See PSARC 2010/080.
495 */
496 mod_prop_info_t ip_propinfo_tbl[] = {
497 /* tunable - 0 */
498 { "_respond_to_address_mask_broadcast", MOD_PROTO_IP,
499 mod_set_boolean, mod_get_boolean,
500 {B_FALSE}, {B_FALSE} },
501
502 { "_respond_to_echo_broadcast", MOD_PROTO_IP,
503 mod_set_boolean, mod_get_boolean,
504 {B_TRUE}, {B_TRUE} },
505
506 { "_respond_to_echo_multicast", MOD_PROTO_IPV4,
507 mod_set_boolean, mod_get_boolean,
508 {B_TRUE}, {B_TRUE} },
509
510 { "_respond_to_timestamp", MOD_PROTO_IP,
511 mod_set_boolean, mod_get_boolean,
512 {B_FALSE}, {B_FALSE} },
513
514 { "_respond_to_timestamp_broadcast", MOD_PROTO_IP,
515 mod_set_boolean, mod_get_boolean,
516 {B_FALSE}, {B_FALSE} },
517
518 { "_send_redirects", MOD_PROTO_IPV4,
519 mod_set_boolean, mod_get_boolean,
520 {B_TRUE}, {B_TRUE} },
521
522 { "_forward_directed_broadcasts", MOD_PROTO_IP,
523 mod_set_boolean, mod_get_boolean,
524 {B_FALSE}, {B_FALSE} },
525
526 { "_mrtdebug", MOD_PROTO_IP,
527 mod_set_uint32, mod_get_uint32,
528 {0, 10, 0}, {0} },
529
530 { "_ire_reclaim_fraction", MOD_PROTO_IP,
531 mod_set_uint32, mod_get_uint32,
532 {1, 8, 3}, {3} },
533
534 { "_nce_reclaim_fraction", MOD_PROTO_IP,
535 mod_set_uint32, mod_get_uint32,
536 {1, 8, 3}, {3} },
537
538 /* tunable - 10 */
539 { "_dce_reclaim_fraction", MOD_PROTO_IP,
540 mod_set_uint32, mod_get_uint32,
541 {1, 8, 3}, {3} },
542
543 { "ttl", MOD_PROTO_IPV4,
544 mod_set_uint32, mod_get_uint32,
545 {1, 255, 255}, {255} },
546
547 { "_forward_src_routed", MOD_PROTO_IPV4,
548 mod_set_boolean, mod_get_boolean,
549 {B_FALSE}, {B_FALSE} },
550
551 { "_wroff_extra", MOD_PROTO_IP,
552 mod_set_uint32, mod_get_uint32,
553 {0, 256, 32}, {32} },
554
555 /* following tunable is in seconds - a deviant! */
556 { "_pathmtu_interval", MOD_PROTO_IP,
557 mod_set_uint32, mod_get_uint32,
558 {2, 999999999, 60*20}, {60*20} },
559
560 { "_icmp_return_data_bytes", MOD_PROTO_IPV4,
561 mod_set_uint32, mod_get_uint32,
562 {8, 65536, 64}, {64} },
563
564 { "_path_mtu_discovery", MOD_PROTO_IP,
565 mod_set_boolean, mod_get_boolean,
566 {B_TRUE}, {B_TRUE} },
567
568 { "_pmtu_min", MOD_PROTO_IP,
569 mod_set_uint32, mod_get_uint32,
570 {68, 65535, 576}, {576} },
571
572 { "_ignore_redirect", MOD_PROTO_IPV4,
573 mod_set_boolean, mod_get_boolean,
574 {B_FALSE}, {B_FALSE} },
575
576 { "_arp_icmp_error", MOD_PROTO_IP,
577 mod_set_boolean, mod_get_boolean,
578 {B_FALSE}, {B_FALSE} },
579
580 /* tunable - 20 */
581 { "_broadcast_ttl", MOD_PROTO_IP,
582 mod_set_uint32, mod_get_uint32,
583 {1, 254, 1}, {1} },
584
585 { "_icmp_err_interval", MOD_PROTO_IP,
586 mod_set_uint32, mod_get_uint32,
587 {0, 99999, 100}, {100} },
588
589 { "_icmp_err_burst", MOD_PROTO_IP,
590 mod_set_uint32, mod_get_uint32,
591 {1, 99999, 10}, {10} },
592
593 { "_reass_queue_bytes", MOD_PROTO_IP,
594 mod_set_uint32, mod_get_uint32,
595 {0, 999999999, 1000000}, {1000000} },
596
597 /*
598 * See comments for ip_strict_src_multihoming for an explanation
599 * of the semantics of ip_strict_dst_multihoming
600 */
601 { "_strict_dst_multihoming", MOD_PROTO_IPV4,
602 mod_set_uint32, mod_get_uint32,
603 {0, 1, 0}, {0} },
604
605 { "_addrs_per_if", MOD_PROTO_IP,
606 mod_set_uint32, mod_get_uint32,
607 {1, MAX_ADDRS_PER_IF, 256}, {256} },
608
609 { "_ipsec_override_persocket_policy", MOD_PROTO_IP,
610 mod_set_boolean, mod_get_boolean,
611 {B_FALSE}, {B_FALSE} },
612
613 { "_icmp_accept_clear_messages", MOD_PROTO_IP,
614 mod_set_boolean, mod_get_boolean,
615 {B_TRUE}, {B_TRUE} },
616
617 { "_igmp_accept_clear_messages", MOD_PROTO_IP,
618 mod_set_boolean, mod_get_boolean,
619 {B_TRUE}, {B_TRUE} },
620
621 { "_ndp_delay_first_probe_time", MOD_PROTO_IP,
622 mod_set_uint32, mod_get_uint32,
623 {2, 999999999, ND_DELAY_FIRST_PROBE_TIME},
624 {ND_DELAY_FIRST_PROBE_TIME} },
625
626 /* tunable - 30 */
627 { "_ndp_max_unicast_solicit", MOD_PROTO_IP,
628 mod_set_uint32, mod_get_uint32,
629 {1, 999999999, ND_MAX_UNICAST_SOLICIT}, {ND_MAX_UNICAST_SOLICIT} },
630
631 { "hoplimit", MOD_PROTO_IPV6,
632 mod_set_uint32, mod_get_uint32,
633 {1, 255, IPV6_MAX_HOPS}, {IPV6_MAX_HOPS} },
634
635 { "_icmp_return_data_bytes", MOD_PROTO_IPV6,
636 mod_set_uint32, mod_get_uint32,
637 {8, IPV6_MIN_MTU, IPV6_MIN_MTU}, {IPV6_MIN_MTU} },
638
639 { "_forward_src_routed", MOD_PROTO_IPV6,
640 mod_set_boolean, mod_get_boolean,
641 {B_FALSE}, {B_FALSE} },
642
643 { "_respond_to_echo_multicast", MOD_PROTO_IPV6,
644 mod_set_boolean, mod_get_boolean,
645 {B_TRUE}, {B_TRUE} },
646
647 { "_send_redirects", MOD_PROTO_IPV6,
648 mod_set_boolean, mod_get_boolean,
649 {B_TRUE}, {B_TRUE} },
650
651 { "_ignore_redirect", MOD_PROTO_IPV6,
652 mod_set_boolean, mod_get_boolean,
653 {B_FALSE}, {B_FALSE} },
654
655 /*
656 * See comments for ip6_strict_src_multihoming for an explanation
657 * of the semantics of ip6_strict_dst_multihoming
658 */
659 { "_strict_dst_multihoming", MOD_PROTO_IPV6,
660 mod_set_uint32, mod_get_uint32,
661 {0, 1, 0}, {0} },
662
663 { "_src_check", MOD_PROTO_IP,
664 mod_set_uint32, mod_get_uint32,
665 {0, 2, 2}, {2} },
666
667 { "_ipsec_policy_log_interval", MOD_PROTO_IP,
668 mod_set_uint32, mod_get_uint32,
669 {0, 999999, 0}, {0} },
670
671 /* tunable - 40 */
672 { "_pim_accept_clear_messages", MOD_PROTO_IP,
673 mod_set_boolean, mod_get_boolean,
674 {B_TRUE}, {B_TRUE} },
675
676 { "_ndp_unsolicit_interval", MOD_PROTO_IP,
677 mod_set_uint32, mod_get_uint32,
678 {1000, 20000, 2000}, {2000} },
679
680 { "_ndp_unsolicit_count", MOD_PROTO_IP,
681 mod_set_uint32, mod_get_uint32,
682 {1, 20, 3}, {3} },
683
684 { "_ignore_home_address_opt", MOD_PROTO_IPV6,
685 mod_set_boolean, mod_get_boolean,
686 {B_TRUE}, {B_TRUE} },
687
688 { "_policy_mask", MOD_PROTO_IP,
689 mod_set_uint32, mod_get_uint32,
690 {0, 15, 0}, {0} },
691
692 { "_ecmp_behavior", MOD_PROTO_IP,
693 mod_set_uint32, mod_get_uint32,
694 {0, 2, 2}, {2} },
695
696 { "_multirt_ttl", MOD_PROTO_IP,
697 mod_set_uint32, mod_get_uint32,
698 {0, 255, 1}, {1} },
699
700 /* following tunable is in seconds - a deviant */
701 { "_ire_badcnt_lifetime", MOD_PROTO_IP,
702 mod_set_uint32, mod_get_uint32,
703 {0, 3600, 60}, {60} },
704
705 { "_max_temp_idle", MOD_PROTO_IP,
706 mod_set_uint32, mod_get_uint32,
707 {0, 999999, 60*60*24}, {60*60*24} },
708
709 { "_max_temp_defend", MOD_PROTO_IP,
710 mod_set_uint32, mod_get_uint32,
711 {0, 1000, 1}, {1} },
712
713 /* tunable - 50 */
714 /*
715 * when a conflict of an active address is detected,
716 * defend up to ip_max_defend times, within any
717 * ip_defend_interval span.
718 */
719 { "_max_defend", MOD_PROTO_IP,
720 mod_set_uint32, mod_get_uint32,
721 {0, 1000, 3}, {3} },
722
723 { "_defend_interval", MOD_PROTO_IP,
724 mod_set_uint32, mod_get_uint32,
725 {0, 999999, 30}, {30} },
726
727 { "_dup_recovery", MOD_PROTO_IP,
728 mod_set_uint32, mod_get_uint32,
729 {0, 3600000, 300000}, {300000} },
730
731 { "_restrict_interzone_loopback", MOD_PROTO_IP,
732 mod_set_boolean, mod_get_boolean,
733 {B_TRUE}, {B_TRUE} },
734
735 { "_lso_outbound", MOD_PROTO_IP,
736 mod_set_boolean, mod_get_boolean,
737 {B_TRUE}, {B_TRUE} },
738
739 { "_igmp_max_version", MOD_PROTO_IP,
740 mod_set_uint32, mod_get_uint32,
741 {IGMP_V1_ROUTER, IGMP_V3_ROUTER, IGMP_V3_ROUTER},
742 {IGMP_V3_ROUTER} },
743
744 { "_mld_max_version", MOD_PROTO_IP,
745 mod_set_uint32, mod_get_uint32,
746 {MLD_V1_ROUTER, MLD_V2_ROUTER, MLD_V2_ROUTER}, {MLD_V2_ROUTER} },
747
748 { "forwarding", MOD_PROTO_IPV4,
749 ip_set_forwarding, ip_get_forwarding,
750 {IP_FORWARD_NEVER}, {IP_FORWARD_NEVER} },
751
752 { "forwarding", MOD_PROTO_IPV6,
753 ip_set_forwarding, ip_get_forwarding,
754 {IP_FORWARD_NEVER}, {IP_FORWARD_NEVER} },
755
756 { "_reasm_timeout", MOD_PROTO_IPV4,
757 mod_set_uint32, mod_get_uint32,
758 {5, 255, IP_REASM_TIMEOUT},
759 {IP_REASM_TIMEOUT} },
760
761 /* tunable - 60 */
762 { "_reasm_timeout", MOD_PROTO_IPV6,
763 mod_set_uint32, mod_get_uint32,
764 {5, 255, IPV6_REASM_TIMEOUT},
765 {IPV6_REASM_TIMEOUT} },
766
767 { "_cgtp_filter", MOD_PROTO_IP,
768 ip_set_cgtp_filter, mod_get_boolean,
769 {B_FALSE}, {B_FALSE} },
770
771 /* delay before sending first probe: */
772 { "_arp_probe_delay", MOD_PROTO_IP,
773 mod_set_uint32, mod_get_uint32,
774 {0, 20000, 1000}, {1000} },
775
776 { "_arp_fastprobe_delay", MOD_PROTO_IP,
777 mod_set_uint32, mod_get_uint32,
778 {0, 20000, 100}, {100} },
779
780 /* interval at which DAD probes are sent: */
781 { "_arp_probe_interval", MOD_PROTO_IP,
782 mod_set_uint32, mod_get_uint32,
783 {10, 20000, 1500}, {1500} },
784
785 { "_arp_fastprobe_interval", MOD_PROTO_IP,
786 mod_set_uint32, mod_get_uint32,
787 {10, 20000, 150}, {150} },
788
789 { "_arp_probe_count", MOD_PROTO_IP,
790 mod_set_uint32, mod_get_uint32,
791 {0, 20, 3}, {3} },
792
793 { "_arp_fastprobe_count", MOD_PROTO_IP,
794 mod_set_uint32, mod_get_uint32,
795 {0, 20, 3}, {3} },
796
797 { "_dad_announce_interval", MOD_PROTO_IPV4,
798 mod_set_uint32, mod_get_uint32,
799 {0, 3600000, 15000}, {15000} },
800
801 { "_dad_announce_interval", MOD_PROTO_IPV6,
802 mod_set_uint32, mod_get_uint32,
803 {0, 3600000, 15000}, {15000} },
804
805 /* tunable - 70 */
806 /*
807 * Rate limiting parameters for DAD defense used in
808 * ill_defend_rate_limit():
809 * defend_rate : pkts/hour permitted
810 * defend_interval : time that can elapse before we send out a
811 * DAD defense.
812 * defend_period: denominator for defend_rate (in seconds).
813 */
814 { "_arp_defend_interval", MOD_PROTO_IP,
815 mod_set_uint32, mod_get_uint32,
816 {0, 3600000, 300000}, {300000} },
817
818 { "_arp_defend_rate", MOD_PROTO_IP,
819 mod_set_uint32, mod_get_uint32,
820 {0, 20000, 100}, {100} },
821
822 { "_ndp_defend_interval", MOD_PROTO_IP,
823 mod_set_uint32, mod_get_uint32,
824 {0, 3600000, 300000}, {300000} },
825
826 { "_ndp_defend_rate", MOD_PROTO_IP,
827 mod_set_uint32, mod_get_uint32,
828 {0, 20000, 100}, {100} },
829
830 { "_arp_defend_period", MOD_PROTO_IP,
831 mod_set_uint32, mod_get_uint32,
832 {5, 86400, 3600}, {3600} },
833
834 { "_ndp_defend_period", MOD_PROTO_IP,
835 mod_set_uint32, mod_get_uint32,
836 {5, 86400, 3600}, {3600} },
837
838 { "_icmp_return_pmtu", MOD_PROTO_IPV4,
839 mod_set_boolean, mod_get_boolean,
840 {B_TRUE}, {B_TRUE} },
841
842 { "_icmp_return_pmtu", MOD_PROTO_IPV6,
843 mod_set_boolean, mod_get_boolean,
844 {B_TRUE}, {B_TRUE} },
845
846 /*
847 * publish count/interval values used to announce local addresses
848 * for IPv4, IPv6.
849 */
850 { "_arp_publish_count", MOD_PROTO_IP,
851 mod_set_uint32, mod_get_uint32,
852 {1, 20, 5}, {5} },
853
854 { "_arp_publish_interval", MOD_PROTO_IP,
855 mod_set_uint32, mod_get_uint32,
856 {1000, 20000, 2000}, {2000} },
857
858 /* tunable - 80 */
859 /*
860 * The ip*strict_src_multihoming and ip*strict_dst_multihoming provide
861 * a range of choices for setting strong/weak/preferred end-system
862 * behavior. The semantics for setting these are:
863 *
864 * ip*_strict_dst_multihoming = 0
865 * weak end system model for managing ip destination addresses.
866 * A packet with IP dst D1 that's received on interface I1 will be
867 * accepted as long as D1 is one of the local addresses on
868 * the machine, even if D1 is not configured on I1.
869 * ip*strict_dst_multihioming = 1
870 * strong end system model for managing ip destination addresses.
871 * A packet with IP dst D1 that's received on interface I1 will be
872 * accepted if, and only if, D1 is configured on I1.
873 *
874 * ip*strict_src_multihoming = 0
875 * Source agnostic route selection for outgoing packets: the
876 * outgoing interface for a packet will be computed using
877 * default algorithms for route selection, where the route
878 * with the longest matching prefix is chosen for the output
879 * unless other route selection constraints are explicitly
880 * specified during routing table lookup. This may result
881 * in packet being sent out on interface I2 with source
882 * address S1, even though S1 is not a configured address on I2.
883 * ip*strict_src_multihoming = 1
884 * Preferred source aware route selection for outgoing packets: for
885 * a packet with source S2, destination D2, the route selection
886 * algorithm will first attempt to find a route for the destination
887 * that goes out through an interface where S2 is
888 * configured. If such a route cannot be found, then the
889 * best-matching route for D2 will be selected.
890 * ip*strict_src_multihoming = 2
891 * Source aware route selection for outgoing packets: a packet will
892 * be sent out on an interface I2 only if the src address S2 of the
893 * packet is a configured address on I2. In conjunction with
894 * the setting 'ip_strict_dst_multihoming == 1', this will result in
895 * the implementation of Strong ES as defined in Section 3.3.4.2 of
896 * RFC 1122
897 */
898 { "_strict_src_multihoming", MOD_PROTO_IPV4,
899 ip_set_src_multihoming, mod_get_uint32,
900 {0, 2, 0}, {0} },
901
902 { "_strict_src_multihoming", MOD_PROTO_IPV6,
903 ip_set_src_multihoming, mod_get_uint32,
904 {0, 2, 0}, {0} },
905
906 #ifdef DEBUG
907 { "_drop_inbound_icmpv6", MOD_PROTO_IPV6,
908 mod_set_boolean, mod_get_boolean,
909 {B_FALSE}, {B_FALSE} },
910 #else
911 { "", 0, NULL, NULL, {0}, {0} },
912 #endif
913
914 { "_dce_reclaim_threshold", MOD_PROTO_IP,
915 mod_set_uint32, mod_get_uint32,
916 {1, 100000, 32}, {32} },
917
918 { "mtu", MOD_PROTO_IPV4, NULL, ip_get_mtu, {0}, {0} },
919
920 { "mtu", MOD_PROTO_IPV6, NULL, ip_get_mtu, {0}, {0} },
921
922 /*
923 * The following entry is a placeholder for `ip_debug' global
924 * variable. Within these callback functions, we will be
925 * setting/getting the global variable
926 */
927 { "_debug", MOD_PROTO_IP,
928 ip_set_debug, ip_get_debug,
929 {0, 20, 0}, {0} },
930
931 { "hostmodel", MOD_PROTO_IPV4, ip_set_hostmodel, ip_get_hostmodel,
932 {IP_WEAK_ES, IP_STRONG_ES, IP_WEAK_ES}, {IP_WEAK_ES} },
933
934 { "hostmodel", MOD_PROTO_IPV6, ip_set_hostmodel, ip_get_hostmodel,
935 {IP_WEAK_ES, IP_STRONG_ES, IP_WEAK_ES}, {IP_WEAK_ES} },
936
937 { "?", MOD_PROTO_IP, NULL, mod_get_allprop, {0}, {0} },
938
939 { NULL, 0, NULL, NULL, {0}, {0} }
940 };
941
942 int ip_propinfo_count = A_CNT(ip_propinfo_tbl);