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 /*
23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #ifndef _INET_IP_STACK_H
28 #define _INET_IP_STACK_H
29
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33
34 #include <sys/netstack.h>
35 #include <netinet/igmp_var.h>
36 #include <sys/modhash.h>
37
38 #ifdef _KERNEL
39 #include <sys/list.h>
40
41
42 /*
43 * IP statistics.
44 */
45 #define IP_STAT(ipst, x) ((ipst)->ips_ip_statistics.x.value.ui64++)
46 #define IP_STAT_UPDATE(ipst, x, n) \
47 ((ipst)->ips_ip_statistics.x.value.ui64 += (n))
48
49 typedef struct ip_stat {
50 kstat_named_t ip_udp_fannorm;
51 kstat_named_t ip_udp_fanmb;
52 kstat_named_t ip_recv_pullup;
53 kstat_named_t ip_db_ref;
54 kstat_named_t ip_notaligned;
55 kstat_named_t ip_multimblk;
56 kstat_named_t ip_opt;
57 kstat_named_t ipsec_proto_ahesp;
58 kstat_named_t ip_conn_flputbq;
59 kstat_named_t ip_conn_walk_drain;
60 kstat_named_t ip_out_sw_cksum;
61 kstat_named_t ip_out_sw_cksum_bytes;
62 kstat_named_t ip_in_sw_cksum;
63 kstat_named_t ip_ire_reclaim_calls;
64 kstat_named_t ip_ire_reclaim_deleted;
65 kstat_named_t ip_nce_reclaim_calls;
66 kstat_named_t ip_nce_reclaim_deleted;
67 kstat_named_t ip_dce_reclaim_calls;
68 kstat_named_t ip_dce_reclaim_deleted;
69 kstat_named_t ip_tcp_in_full_hw_cksum_err;
70 kstat_named_t ip_tcp_in_part_hw_cksum_err;
71 kstat_named_t ip_tcp_in_sw_cksum_err;
72 kstat_named_t ip_udp_in_full_hw_cksum_err;
73 kstat_named_t ip_udp_in_part_hw_cksum_err;
74 kstat_named_t ip_udp_in_sw_cksum_err;
75 kstat_named_t conn_in_recvdstaddr;
76 kstat_named_t conn_in_recvopts;
77 kstat_named_t conn_in_recvif;
78 kstat_named_t conn_in_recvslla;
79 kstat_named_t conn_in_recvucred;
80 kstat_named_t conn_in_recvttl;
81 kstat_named_t conn_in_recvhopopts;
82 kstat_named_t conn_in_recvhoplimit;
83 kstat_named_t conn_in_recvdstopts;
84 kstat_named_t conn_in_recvrthdrdstopts;
85 kstat_named_t conn_in_recvrthdr;
86 kstat_named_t conn_in_recvpktinfo;
87 kstat_named_t conn_in_recvtclass;
88 kstat_named_t conn_in_timestamp;
89 } ip_stat_t;
90
91
92 /*
93 * IP6 statistics.
94 */
95 #define IP6_STAT(ipst, x) ((ipst)->ips_ip6_statistics.x.value.ui64++)
96 #define IP6_STAT_UPDATE(ipst, x, n) \
97 ((ipst)->ips_ip6_statistics.x.value.ui64 += (n))
98
99 typedef struct ip6_stat {
100 kstat_named_t ip6_udp_fannorm;
101 kstat_named_t ip6_udp_fanmb;
102 kstat_named_t ip6_recv_pullup;
103 kstat_named_t ip6_db_ref;
104 kstat_named_t ip6_notaligned;
105 kstat_named_t ip6_multimblk;
106 kstat_named_t ipsec_proto_ahesp;
107 kstat_named_t ip6_out_sw_cksum;
108 kstat_named_t ip6_out_sw_cksum_bytes;
109 kstat_named_t ip6_in_sw_cksum;
110 kstat_named_t ip6_tcp_in_full_hw_cksum_err;
111 kstat_named_t ip6_tcp_in_part_hw_cksum_err;
112 kstat_named_t ip6_tcp_in_sw_cksum_err;
113 kstat_named_t ip6_udp_in_full_hw_cksum_err;
114 kstat_named_t ip6_udp_in_part_hw_cksum_err;
115 kstat_named_t ip6_udp_in_sw_cksum_err;
116 kstat_named_t ip6_frag_mdt_pkt_out;
117 kstat_named_t ip6_frag_mdt_discarded;
118 kstat_named_t ip6_frag_mdt_allocfail;
119 kstat_named_t ip6_frag_mdt_addpdescfail;
120 kstat_named_t ip6_frag_mdt_allocd;
121 } ip6_stat_t;
122
123 typedef struct ire_stats {
124 uint64_t ire_stats_alloced; /* # of ires alloced */
125 uint64_t ire_stats_freed; /* # of ires freed */
126 uint64_t ire_stats_inserted; /* # of ires inserted in the bucket */
127 uint64_t ire_stats_deleted; /* # of ires deleted from the bucket */
128 } ire_stats_t;
129
130 #define TX_FANOUT_SIZE 128
131 #define IDLHASHINDEX(X) \
132 ((((uintptr_t)(X) >> 2) + ((uintptr_t)(X) >> 9)) & (TX_FANOUT_SIZE - 1))
133
134 /* Data structure to represent addresses */
135 typedef struct srcid_map {
136 struct srcid_map *sm_next;
137 in6_addr_t sm_addr; /* Local address */
138 uint_t sm_srcid; /* source id */
139 uint_t sm_refcnt; /* > 1 ipif with same addr? */
140 zoneid_t sm_zoneid; /* zone id */
141 } srcid_map_t;
142
143 /*
144 * IP stack instances
145 */
146 struct ip_stack {
147 netstack_t *ips_netstack; /* Common netstack */
148
149 uint_t ips_src_generation; /* Both IPv4 and IPv6 */
150
151 struct mod_prop_info_s *ips_propinfo_tbl; /* ip tunables table */
152
153 mib2_ipIfStatsEntry_t ips_ip_mib; /* SNMP fixed size info */
154 mib2_icmp_t ips_icmp_mib;
155 /*
156 * IPv6 mibs when the interface (ill) is not known.
157 * When the ill is known the per-interface mib in the ill is used.
158 */
159 mib2_ipIfStatsEntry_t ips_ip6_mib;
160 mib2_ipv6IfIcmpEntry_t ips_icmp6_mib;
161
162 struct igmpstat ips_igmpstat;
163
164 kstat_t *ips_ip_mibkp; /* kstat exporting ip_mib data */
165 kstat_t *ips_icmp_mibkp; /* kstat exporting icmp_mib data */
166 kstat_t *ips_ip_kstat;
167 ip_stat_t ips_ip_statistics;
168 kstat_t *ips_ip6_kstat;
169 ip6_stat_t ips_ip6_statistics;
170
171 /* ip.c */
172 kmutex_t ips_igmp_timer_lock;
173 kmutex_t ips_mld_timer_lock;
174 kmutex_t ips_ip_mi_lock;
175 kmutex_t ips_ip_addr_avail_lock;
176 krwlock_t ips_ill_g_lock;
177
178 krwlock_t ips_ill_g_usesrc_lock;
179
180 /* Taskq dispatcher for capability operations */
181 kmutex_t ips_capab_taskq_lock;
182 kcondvar_t ips_capab_taskq_cv;
183 mblk_t *ips_capab_taskq_head;
184 mblk_t *ips_capab_taskq_tail;
185 kthread_t *ips_capab_taskq_thread;
186 boolean_t ips_capab_taskq_quit;
187
188 /* ipclassifier.c - keep in ip_stack_t */
189 /* ipclassifier hash tables */
190 struct connf_s *ips_rts_clients;
191 struct connf_s *ips_ipcl_conn_fanout;
192 struct connf_s *ips_ipcl_bind_fanout;
193 struct connf_s *ips_ipcl_proto_fanout_v4;
194 struct connf_s *ips_ipcl_proto_fanout_v6;
195 struct connf_s *ips_ipcl_udp_fanout;
196 struct connf_s *ips_ipcl_raw_fanout; /* RAW SCTP sockets */
197 struct connf_s *ips_ipcl_iptun_fanout;
198 struct connf_s *ips_ipcl_dccp_fanout;
199 uint_t ips_ipcl_conn_fanout_size;
200 uint_t ips_ipcl_bind_fanout_size;
201 uint_t ips_ipcl_udp_fanout_size;
202 uint_t ips_ipcl_raw_fanout_size;
203 uint_t ips_ipcl_iptun_fanout_size;
204 uint_t ips_ipcl_dccp_fanout_size;
205 struct connf_s *ips_ipcl_globalhash_fanout;
206 int ips_conn_g_index;
207
208 /* ip.c */
209 /* Following protected by igmp_timer_lock */
210 int ips_igmp_time_to_next; /* Time since last timeout */
211 int ips_igmp_timer_scheduled_last;
212 int ips_igmp_deferred_next;
213 timeout_id_t ips_igmp_timeout_id;
214 boolean_t ips_igmp_timer_setter_active;
215
216 /* Following protected by mld_timer_lock */
217 int ips_mld_time_to_next; /* Time since last timeout */
218 int ips_mld_timer_scheduled_last;
219 int ips_mld_deferred_next;
220 timeout_id_t ips_mld_timeout_id;
221 boolean_t ips_mld_timer_setter_active;
222
223 /* Protected by igmp_slowtimeout_lock */
224 timeout_id_t ips_igmp_slowtimeout_id;
225 kmutex_t ips_igmp_slowtimeout_lock;
226
227 /* Protected by mld_slowtimeout_lock */
228 timeout_id_t ips_mld_slowtimeout_id;
229 kmutex_t ips_mld_slowtimeout_lock;
230
231 /* IPv4 forwarding table */
232 struct radix_node_head *ips_ip_ftable;
233
234 #define IPV6_ABITS 128
235 #define IP6_MASK_TABLE_SIZE (IPV6_ABITS + 1) /* 129 ptrs */
236 struct irb *ips_ip_forwarding_table_v6[IP6_MASK_TABLE_SIZE];
237
238 /*
239 * ire_ft_init_lock is used while initializing ip_forwarding_table
240 * dynamically in ire_add.
241 */
242 kmutex_t ips_ire_ft_init_lock;
243
244 /*
245 * This is the IPv6 counterpart of RADIX_NODE_HEAD_LOCK. It is used
246 * to prevent adds and deletes while we are doing a ftable_lookup
247 * and extracting the ire_generation.
248 */
249 krwlock_t ips_ip6_ire_head_lock;
250
251 uint32_t ips_ip6_ftable_hash_size;
252
253 ire_stats_t ips_ire_stats_v4; /* IPv4 ire statistics */
254 ire_stats_t ips_ire_stats_v6; /* IPv6 ire statistics */
255
256 /* Count how many condemned objects for kmem_cache callbacks */
257 uint32_t ips_num_ire_condemned;
258 uint32_t ips_num_nce_condemned;
259 uint32_t ips_num_dce_condemned;
260
261 struct ire_s *ips_ire_reject_v4; /* For unreachable dests */
262 struct ire_s *ips_ire_reject_v6; /* For unreachable dests */
263 struct ire_s *ips_ire_blackhole_v4; /* For temporary failures */
264 struct ire_s *ips_ire_blackhole_v6; /* For temporary failures */
265
266 /* ips_ire_dep_lock protects ire_dep_* relationship between IREs */
267 krwlock_t ips_ire_dep_lock;
268
269 /* Destination Cache Entries */
270 struct dce_s *ips_dce_default;
271 uint_t ips_dce_hashsize;
272 struct dcb_s *ips_dce_hash_v4;
273 struct dcb_s *ips_dce_hash_v6;
274
275 /* pending binds */
276 mblk_t *ips_ip6_asp_pending_ops;
277 mblk_t *ips_ip6_asp_pending_ops_tail;
278
279 /* Synchronize updates with table usage */
280 mblk_t *ips_ip6_asp_pending_update; /* pending table updates */
281
282 boolean_t ips_ip6_asp_uip; /* table update in progress */
283 kmutex_t ips_ip6_asp_lock; /* protect all the above */
284 uint32_t ips_ip6_asp_refcnt; /* outstanding references */
285
286 struct ip6_asp *ips_ip6_asp_table;
287 /* The number of policy entries in the table */
288 uint_t ips_ip6_asp_table_count;
289
290 struct conn_s *ips_ip_g_mrouter;
291
292 /* Time since last icmp_pkt_err */
293 clock_t ips_icmp_pkt_err_last;
294 /* Number of packets sent in burst */
295 uint_t ips_icmp_pkt_err_sent;
296
297 /* Protected by ip_mi_lock */
298 void *ips_ip_g_head; /* IP Instance Data List Head */
299 void *ips_arp_g_head; /* ARP Instance Data List Head */
300
301 /* Multirouting stuff */
302 /* Interval (in ms) between consecutive 'bad MTU' warnings */
303 hrtime_t ips_ip_multirt_log_interval;
304 /* Time since last warning issued. */
305 hrtime_t ips_multirt_bad_mtu_last_time;
306
307 /*
308 * CGTP hooks. Enabling and disabling of hooks is controlled by an
309 * IP tunable 'ips_ip_cgtp_filter'.
310 */
311 struct cgtp_filter_ops *ips_ip_cgtp_filter_ops;
312
313 struct ipsq_s *ips_ipsq_g_head;
314 uint_t ips_ill_index; /* Used to assign interface indicies */
315 /* When set search for unused index */
316 boolean_t ips_ill_index_wrap;
317
318 uint_t ips_loopback_packets;
319
320 /* NDP/NCE structures for IPv4 and IPv6 */
321 struct ndp_g_s *ips_ndp4;
322 struct ndp_g_s *ips_ndp6;
323
324 /* ip_mroute stuff */
325 kmutex_t ips_ip_g_mrouter_mutex;
326
327 struct mrtstat *ips_mrtstat; /* Stats for netstat */
328 int ips_saved_ip_forwarding;
329
330 /* numvifs is only a hint about the max interface being used. */
331 ushort_t ips_numvifs;
332 kmutex_t ips_numvifs_mutex;
333
334 struct vif *ips_vifs;
335 struct mfcb *ips_mfcs; /* kernel routing table */
336 struct tbf *ips_tbfs;
337 /*
338 * One-back cache used to locate a tunnel's vif,
339 * given a datagram's src ip address.
340 */
341 ipaddr_t ips_last_encap_src;
342 struct vif *ips_last_encap_vif;
343 kmutex_t ips_last_encap_lock; /* Protects the above */
344
345 /*
346 * reg_vif_num is protected by numvifs_mutex
347 */
348 /* Whether or not special PIM assert processing is enabled. */
349 ushort_t ips_reg_vif_num; /* Index to Register vif */
350 int ips_pim_assert;
351
352 union ill_g_head_u *ips_ill_g_heads; /* ILL List Head */
353
354 kstat_t *ips_loopback_ksp;
355
356 /* Array of conn drain lists */
357 struct idl_tx_list_s *ips_idl_tx_list;
358 uint_t ips_conn_drain_list_cnt; /* Count of conn_drain_list */
359
360 /*
361 * ID used to assign next free one.
362 * Increases by one. Once it wraps we search for an unused ID.
363 */
364 uint_t ips_ip_src_id;
365 boolean_t ips_srcid_wrapped;
366
367 struct srcid_map *ips_srcid_head;
368 krwlock_t ips_srcid_lock;
369
370 uint64_t ips_ipif_g_seqid; /* Used only for sctp_addr.c */
371 union phyint_list_u *ips_phyint_g_list; /* start of phyint list */
372
373 /* ip_netinfo.c */
374 hook_family_t ips_ipv4root;
375 hook_family_t ips_ipv6root;
376 hook_family_t ips_arproot;
377
378 net_handle_t ips_ipv4_net_data;
379 net_handle_t ips_ipv6_net_data;
380 net_handle_t ips_arp_net_data;
381
382 /*
383 * Hooks for firewalling
384 */
385 hook_event_t ips_ip4_physical_in_event;
386 hook_event_t ips_ip4_physical_out_event;
387 hook_event_t ips_ip4_forwarding_event;
388 hook_event_t ips_ip4_loopback_in_event;
389 hook_event_t ips_ip4_loopback_out_event;
390
391 hook_event_t ips_ip6_physical_in_event;
392 hook_event_t ips_ip6_physical_out_event;
393 hook_event_t ips_ip6_forwarding_event;
394 hook_event_t ips_ip6_loopback_in_event;
395 hook_event_t ips_ip6_loopback_out_event;
396
397 hook_event_t ips_arp_physical_in_event;
398 hook_event_t ips_arp_physical_out_event;
399 hook_event_t ips_arp_nic_events;
400
401 hook_event_token_t ips_ipv4firewall_physical_in;
402 hook_event_token_t ips_ipv4firewall_physical_out;
403 hook_event_token_t ips_ipv4firewall_forwarding;
404 hook_event_token_t ips_ipv4firewall_loopback_in;
405 hook_event_token_t ips_ipv4firewall_loopback_out;
406
407 hook_event_token_t ips_ipv6firewall_physical_in;
408 hook_event_token_t ips_ipv6firewall_physical_out;
409 hook_event_token_t ips_ipv6firewall_forwarding;
410 hook_event_token_t ips_ipv6firewall_loopback_in;
411 hook_event_token_t ips_ipv6firewall_loopback_out;
412
413 hook_event_t ips_ip4_nic_events;
414 hook_event_t ips_ip6_nic_events;
415 hook_event_token_t ips_ipv4nicevents;
416 hook_event_token_t ips_ipv6nicevents;
417
418 hook_event_token_t ips_arp_physical_in;
419 hook_event_token_t ips_arp_physical_out;
420 hook_event_token_t ips_arpnicevents;
421
422 net_handle_t ips_ip4_observe_pr;
423 net_handle_t ips_ip6_observe_pr;
424 hook_event_t ips_ip4_observe;
425 hook_event_t ips_ip6_observe;
426 hook_event_token_t ips_ipv4observing;
427 hook_event_token_t ips_ipv6observing;
428
429 struct __ldi_ident *ips_ldi_ident;
430
431 /* ipmp.c */
432 krwlock_t ips_ipmp_lock;
433 mod_hash_t *ips_ipmp_grp_hash;
434
435 };
436 typedef struct ip_stack ip_stack_t;
437
438 /* Finding an ip_stack_t */
439 #define CONNQ_TO_IPST(_q) (Q_TO_CONN(_q)->conn_netstack->netstack_ip)
440 #define ILLQ_TO_IPST(_q) (((ill_t *)(_q)->q_ptr)->ill_ipst)
441 #define PHYINT_TO_IPST(phyi) ((phyi)->phyint_ipsq->ipsq_ipst)
442
443 #else /* _KERNEL */
444 typedef int ip_stack_t;
445 #endif /* _KERNEL */
446
447 #ifdef __cplusplus
448 }
449 #endif
450
451 #endif /* _INET_IP_STACK_H */