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8429abe0 RW |
1 | /* $OpenBSD$ */ |
2 | ||
3 | /* | |
4 | * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org> | |
5 | * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> | |
6 | * Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org> | |
7 | * | |
8 | * Permission to use, copy, modify, and distribute this software for any | |
9 | * purpose with or without fee is hereby granted, provided that the above | |
10 | * copyright notice and this permission notice appear in all copies. | |
11 | * | |
12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
19 | */ | |
20 | ||
eac6e3f0 | 21 | #include <zebra.h> |
8429abe0 RW |
22 | |
23 | #include "ldpd.h" | |
24 | #include "ldpe.h" | |
25 | #include "log.h" | |
26 | ||
eac6e3f0 RW |
27 | #include "sockopt.h" |
28 | ||
7d3d7491 | 29 | static __inline int iface_compare(struct iface *, struct iface *); |
8429abe0 RW |
30 | static struct if_addr *if_addr_new(struct kaddr *); |
31 | static struct if_addr *if_addr_lookup(struct if_addr_head *, struct kaddr *); | |
32 | static int if_start(struct iface *, int); | |
33 | static int if_reset(struct iface *, int); | |
988ded8d | 34 | static void if_update_af(struct iface_af *); |
eac6e3f0 | 35 | static int if_hello_timer(struct thread *); |
8429abe0 RW |
36 | static void if_start_hello_timer(struct iface_af *); |
37 | static void if_stop_hello_timer(struct iface_af *); | |
38 | static int if_join_ipv4_group(struct iface *, struct in_addr *); | |
39 | static int if_leave_ipv4_group(struct iface *, struct in_addr *); | |
40 | static int if_join_ipv6_group(struct iface *, struct in6_addr *); | |
41 | static int if_leave_ipv6_group(struct iface *, struct in6_addr *); | |
42 | ||
7d3d7491 RW |
43 | RB_GENERATE(iface_head, iface, entry, iface_compare) |
44 | ||
45 | static __inline int | |
46 | iface_compare(struct iface *a, struct iface *b) | |
47 | { | |
48 | return (strcmp(a->name, b->name)); | |
49 | } | |
50 | ||
8429abe0 | 51 | struct iface * |
52b530fc | 52 | if_new(const char *name) |
8429abe0 RW |
53 | { |
54 | struct iface *iface; | |
55 | ||
56 | if ((iface = calloc(1, sizeof(*iface))) == NULL) | |
57 | fatal("if_new: calloc"); | |
58 | ||
52b530fc | 59 | strlcpy(iface->name, name, sizeof(iface->name)); |
8429abe0 RW |
60 | |
61 | /* ipv4 */ | |
62 | iface->ipv4.af = AF_INET; | |
63 | iface->ipv4.iface = iface; | |
64 | iface->ipv4.enabled = 0; | |
8429abe0 RW |
65 | |
66 | /* ipv6 */ | |
67 | iface->ipv6.af = AF_INET6; | |
68 | iface->ipv6.iface = iface; | |
69 | iface->ipv6.enabled = 0; | |
8429abe0 RW |
70 | |
71 | return (iface); | |
72 | } | |
73 | ||
8429abe0 | 74 | void |
1d75a89d RW |
75 | ldpe_if_init(struct iface *iface) |
76 | { | |
77 | log_debug("%s: interface %s", __func__, iface->name); | |
78 | ||
79 | LIST_INIT(&iface->addr_list); | |
80 | ||
81 | /* ipv4 */ | |
82 | iface->ipv4.iface = iface; | |
83 | iface->ipv4.state = IF_STA_DOWN; | |
84 | RB_INIT(&iface->ipv4.adj_tree); | |
85 | ||
86 | /* ipv6 */ | |
87 | iface->ipv6.iface = iface; | |
88 | iface->ipv6.state = IF_STA_DOWN; | |
89 | RB_INIT(&iface->ipv6.adj_tree); | |
90 | } | |
91 | ||
92 | void | |
93 | ldpe_if_exit(struct iface *iface) | |
8429abe0 RW |
94 | { |
95 | struct if_addr *if_addr; | |
96 | ||
97 | log_debug("%s: interface %s", __func__, iface->name); | |
98 | ||
99 | if (iface->ipv4.state == IF_STA_ACTIVE) | |
100 | if_reset(iface, AF_INET); | |
101 | if (iface->ipv6.state == IF_STA_ACTIVE) | |
102 | if_reset(iface, AF_INET6); | |
103 | ||
104 | while ((if_addr = LIST_FIRST(&iface->addr_list)) != NULL) { | |
105 | LIST_REMOVE(if_addr, entry); | |
106 | free(if_addr); | |
107 | } | |
108 | } | |
109 | ||
eac6e3f0 | 110 | struct iface * |
7d3d7491 | 111 | if_lookup(struct ldpd_conf *xconf, unsigned short ifindex) |
eac6e3f0 RW |
112 | { |
113 | struct iface *iface; | |
114 | ||
7d3d7491 RW |
115 | RB_FOREACH(iface, iface_head, &xconf->iface_tree) |
116 | if (iface->ifindex == ifindex) | |
eac6e3f0 RW |
117 | return (iface); |
118 | ||
119 | return (NULL); | |
120 | } | |
121 | ||
7d3d7491 RW |
122 | struct iface * |
123 | if_lookup_name(struct ldpd_conf *xconf, const char *ifname) | |
124 | { | |
125 | struct iface iface; | |
126 | strlcpy(iface.name, ifname, sizeof(iface.name)); | |
127 | return (RB_FIND(iface_head, &xconf->iface_tree, &iface)); | |
128 | } | |
129 | ||
eac6e3f0 RW |
130 | void |
131 | if_update_info(struct iface *iface, struct kif *kif) | |
132 | { | |
133 | /* get type */ | |
134 | if (kif->flags & IFF_POINTOPOINT) | |
135 | iface->type = IF_TYPE_POINTOPOINT; | |
136 | if (kif->flags & IFF_BROADCAST && | |
137 | kif->flags & IFF_MULTICAST) | |
138 | iface->type = IF_TYPE_BROADCAST; | |
139 | ||
140 | /* get index and flags */ | |
141 | iface->ifindex = kif->ifindex; | |
988ded8d | 142 | iface->operative = kif->operative; |
eac6e3f0 RW |
143 | } |
144 | ||
8429abe0 RW |
145 | struct iface_af * |
146 | iface_af_get(struct iface *iface, int af) | |
147 | { | |
148 | switch (af) { | |
149 | case AF_INET: | |
150 | return (&iface->ipv4); | |
151 | case AF_INET6: | |
152 | return (&iface->ipv6); | |
153 | default: | |
154 | fatalx("iface_af_get: unknown af"); | |
155 | } | |
156 | } | |
157 | ||
158 | static struct if_addr * | |
159 | if_addr_new(struct kaddr *ka) | |
160 | { | |
161 | struct if_addr *if_addr; | |
162 | ||
163 | if ((if_addr = calloc(1, sizeof(*if_addr))) == NULL) | |
164 | fatal(__func__); | |
165 | ||
166 | if_addr->af = ka->af; | |
167 | if_addr->addr = ka->addr; | |
168 | if_addr->prefixlen = ka->prefixlen; | |
169 | if_addr->dstbrd = ka->dstbrd; | |
170 | ||
171 | return (if_addr); | |
172 | } | |
173 | ||
174 | static struct if_addr * | |
175 | if_addr_lookup(struct if_addr_head *addr_list, struct kaddr *ka) | |
176 | { | |
177 | struct if_addr *if_addr; | |
178 | int af = ka->af; | |
179 | ||
180 | LIST_FOREACH(if_addr, addr_list, entry) | |
181 | if (!ldp_addrcmp(af, &if_addr->addr, &ka->addr) && | |
182 | if_addr->prefixlen == ka->prefixlen && | |
183 | !ldp_addrcmp(af, &if_addr->dstbrd, &ka->dstbrd)) | |
184 | return (if_addr); | |
185 | ||
186 | return (NULL); | |
187 | } | |
188 | ||
189 | void | |
190 | if_addr_add(struct kaddr *ka) | |
191 | { | |
192 | struct iface *iface; | |
193 | struct if_addr *if_addr; | |
194 | struct nbr *nbr; | |
195 | ||
196 | if (if_addr_lookup(&global.addr_list, ka) == NULL) { | |
197 | if_addr = if_addr_new(ka); | |
198 | ||
199 | LIST_INSERT_HEAD(&global.addr_list, if_addr, entry); | |
200 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
201 | if (nbr->state != NBR_STA_OPER) | |
202 | continue; | |
203 | if (if_addr->af == AF_INET && !nbr->v4_enabled) | |
204 | continue; | |
205 | if (if_addr->af == AF_INET6 && !nbr->v6_enabled) | |
206 | continue; | |
207 | ||
208 | send_address_single(nbr, if_addr, 0); | |
209 | } | |
210 | } | |
211 | ||
9cf67225 | 212 | iface = if_lookup_name(leconf, ka->ifname); |
8429abe0 RW |
213 | if (iface) { |
214 | if (ka->af == AF_INET6 && IN6_IS_ADDR_LINKLOCAL(&ka->addr.v6)) | |
215 | iface->linklocal = ka->addr.v6; | |
216 | ||
217 | if (if_addr_lookup(&iface->addr_list, ka) == NULL) { | |
218 | if_addr = if_addr_new(ka); | |
219 | LIST_INSERT_HEAD(&iface->addr_list, if_addr, entry); | |
61cd1100 | 220 | ldp_if_update(iface, if_addr->af); |
8429abe0 RW |
221 | } |
222 | } | |
223 | } | |
224 | ||
225 | void | |
226 | if_addr_del(struct kaddr *ka) | |
227 | { | |
228 | struct iface *iface; | |
229 | struct if_addr *if_addr; | |
230 | struct nbr *nbr; | |
231 | ||
9cf67225 | 232 | iface = if_lookup_name(leconf, ka->ifname); |
8429abe0 RW |
233 | if (iface) { |
234 | if (ka->af == AF_INET6 && | |
235 | IN6_ARE_ADDR_EQUAL(&iface->linklocal, &ka->addr.v6)) | |
236 | memset(&iface->linklocal, 0, sizeof(iface->linklocal)); | |
237 | ||
238 | if_addr = if_addr_lookup(&iface->addr_list, ka); | |
239 | if (if_addr) { | |
240 | LIST_REMOVE(if_addr, entry); | |
61cd1100 | 241 | ldp_if_update(iface, if_addr->af); |
8429abe0 RW |
242 | free(if_addr); |
243 | } | |
244 | } | |
245 | ||
246 | if_addr = if_addr_lookup(&global.addr_list, ka); | |
247 | if (if_addr) { | |
248 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
249 | if (nbr->state != NBR_STA_OPER) | |
250 | continue; | |
251 | if (if_addr->af == AF_INET && !nbr->v4_enabled) | |
252 | continue; | |
253 | if (if_addr->af == AF_INET6 && !nbr->v6_enabled) | |
254 | continue; | |
255 | send_address_single(nbr, if_addr, 1); | |
256 | } | |
257 | LIST_REMOVE(if_addr, entry); | |
258 | free(if_addr); | |
259 | } | |
260 | } | |
261 | ||
262 | static int | |
263 | if_start(struct iface *iface, int af) | |
264 | { | |
265 | struct iface_af *ia; | |
266 | struct timeval now; | |
267 | ||
268 | log_debug("%s: %s address-family %s", __func__, iface->name, | |
269 | af_name(af)); | |
270 | ||
271 | ia = iface_af_get(iface, af); | |
272 | ||
273 | gettimeofday(&now, NULL); | |
274 | ia->uptime = now.tv_sec; | |
275 | ||
276 | switch (af) { | |
277 | case AF_INET: | |
278 | if (if_join_ipv4_group(iface, &global.mcast_addr_v4)) | |
279 | return (-1); | |
280 | break; | |
281 | case AF_INET6: | |
282 | if (if_join_ipv6_group(iface, &global.mcast_addr_v6)) | |
283 | return (-1); | |
284 | break; | |
285 | default: | |
286 | fatalx("if_start: unknown af"); | |
287 | } | |
288 | ||
289 | send_hello(HELLO_LINK, ia, NULL); | |
8429abe0 | 290 | if_start_hello_timer(ia); |
8a26d0cf RW |
291 | ia->state = IF_STA_ACTIVE; |
292 | ||
8429abe0 RW |
293 | return (0); |
294 | } | |
295 | ||
296 | static int | |
297 | if_reset(struct iface *iface, int af) | |
298 | { | |
299 | struct iface_af *ia; | |
300 | struct adj *adj; | |
301 | ||
302 | log_debug("%s: %s address-family %s", __func__, iface->name, | |
303 | af_name(af)); | |
304 | ||
305 | ia = iface_af_get(iface, af); | |
306 | if_stop_hello_timer(ia); | |
307 | ||
057d48bd | 308 | while ((adj = RB_ROOT(&ia->adj_tree)) != NULL) |
8429abe0 RW |
309 | adj_del(adj, S_SHUTDOWN); |
310 | ||
311 | /* try to cleanup */ | |
312 | switch (af) { | |
313 | case AF_INET: | |
314 | if (global.ipv4.ldp_disc_socket != -1) | |
315 | if_leave_ipv4_group(iface, &global.mcast_addr_v4); | |
316 | break; | |
317 | case AF_INET6: | |
318 | if (global.ipv6.ldp_disc_socket != -1) | |
319 | if_leave_ipv6_group(iface, &global.mcast_addr_v6); | |
320 | break; | |
321 | default: | |
8a26d0cf | 322 | fatalx("if_reset: unknown af"); |
8429abe0 RW |
323 | } |
324 | ||
8a26d0cf RW |
325 | ia->state = IF_STA_DOWN; |
326 | ||
8429abe0 RW |
327 | return (0); |
328 | } | |
329 | ||
330 | static void | |
988ded8d | 331 | if_update_af(struct iface_af *ia) |
8429abe0 RW |
332 | { |
333 | int addr_ok = 0, socket_ok, rtr_id_ok; | |
334 | struct if_addr *if_addr; | |
335 | ||
336 | switch (ia->af) { | |
337 | case AF_INET: | |
338 | /* | |
339 | * NOTE: for LDPv4, each interface should have at least one | |
340 | * valid IP address otherwise they can not be enabled. | |
341 | */ | |
342 | LIST_FOREACH(if_addr, &ia->iface->addr_list, entry) { | |
343 | if (if_addr->af == AF_INET) { | |
344 | addr_ok = 1; | |
345 | break; | |
346 | } | |
347 | } | |
348 | break; | |
349 | case AF_INET6: | |
350 | /* for IPv6 the link-local address is enough. */ | |
351 | if (IN6_IS_ADDR_LINKLOCAL(&ia->iface->linklocal)) | |
352 | addr_ok = 1; | |
353 | break; | |
354 | default: | |
355 | fatalx("if_update_af: unknown af"); | |
356 | } | |
357 | ||
358 | if ((ldp_af_global_get(&global, ia->af))->ldp_disc_socket != -1) | |
359 | socket_ok = 1; | |
360 | else | |
361 | socket_ok = 0; | |
362 | ||
eac6e3f0 | 363 | if (ldp_rtr_id_get(leconf) != INADDR_ANY) |
8429abe0 RW |
364 | rtr_id_ok = 1; |
365 | else | |
366 | rtr_id_ok = 0; | |
367 | ||
368 | if (ia->state == IF_STA_DOWN) { | |
988ded8d RW |
369 | if (!ia->enabled || !ia->iface->operative || !addr_ok || |
370 | !socket_ok || !rtr_id_ok) | |
8429abe0 RW |
371 | return; |
372 | ||
8429abe0 RW |
373 | if_start(ia->iface, ia->af); |
374 | } else if (ia->state == IF_STA_ACTIVE) { | |
988ded8d RW |
375 | if (ia->enabled && ia->iface->operative && addr_ok && |
376 | socket_ok && rtr_id_ok) | |
8429abe0 RW |
377 | return; |
378 | ||
8429abe0 RW |
379 | if_reset(ia->iface, ia->af); |
380 | } | |
381 | } | |
382 | ||
383 | void | |
61cd1100 | 384 | ldp_if_update(struct iface *iface, int af) |
8429abe0 | 385 | { |
8429abe0 | 386 | if (af == AF_INET || af == AF_UNSPEC) |
988ded8d | 387 | if_update_af(&iface->ipv4); |
8429abe0 | 388 | if (af == AF_INET6 || af == AF_UNSPEC) |
988ded8d | 389 | if_update_af(&iface->ipv6); |
8429abe0 RW |
390 | } |
391 | ||
392 | void | |
393 | if_update_all(int af) | |
394 | { | |
395 | struct iface *iface; | |
396 | ||
7d3d7491 | 397 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) |
61cd1100 | 398 | ldp_if_update(iface, af); |
8429abe0 RW |
399 | } |
400 | ||
eac6e3f0 RW |
401 | uint16_t |
402 | if_get_hello_holdtime(struct iface_af *ia) | |
403 | { | |
404 | if (ia->hello_holdtime != 0) | |
405 | return (ia->hello_holdtime); | |
406 | ||
407 | if ((ldp_af_conf_get(leconf, ia->af))->lhello_holdtime != 0) | |
408 | return ((ldp_af_conf_get(leconf, ia->af))->lhello_holdtime); | |
409 | ||
410 | return (leconf->lhello_holdtime); | |
411 | } | |
412 | ||
413 | uint16_t | |
414 | if_get_hello_interval(struct iface_af *ia) | |
415 | { | |
416 | if (ia->hello_interval != 0) | |
417 | return (ia->hello_interval); | |
418 | ||
419 | if ((ldp_af_conf_get(leconf, ia->af))->lhello_interval != 0) | |
420 | return ((ldp_af_conf_get(leconf, ia->af))->lhello_interval); | |
421 | ||
422 | return (leconf->lhello_interval); | |
423 | } | |
424 | ||
8429abe0 RW |
425 | /* timers */ |
426 | /* ARGSUSED */ | |
eac6e3f0 RW |
427 | static int |
428 | if_hello_timer(struct thread *thread) | |
8429abe0 | 429 | { |
eac6e3f0 | 430 | struct iface_af *ia = THREAD_ARG(thread); |
8429abe0 | 431 | |
eac6e3f0 | 432 | ia->hello_timer = NULL; |
8429abe0 RW |
433 | send_hello(HELLO_LINK, ia, NULL); |
434 | if_start_hello_timer(ia); | |
eac6e3f0 RW |
435 | |
436 | return (0); | |
8429abe0 RW |
437 | } |
438 | ||
439 | static void | |
440 | if_start_hello_timer(struct iface_af *ia) | |
441 | { | |
eac6e3f0 RW |
442 | THREAD_TIMER_OFF(ia->hello_timer); |
443 | ia->hello_timer = thread_add_timer(master, if_hello_timer, ia, | |
444 | if_get_hello_interval(ia)); | |
8429abe0 RW |
445 | } |
446 | ||
447 | static void | |
448 | if_stop_hello_timer(struct iface_af *ia) | |
449 | { | |
eac6e3f0 | 450 | THREAD_TIMER_OFF(ia->hello_timer); |
8429abe0 RW |
451 | } |
452 | ||
453 | struct ctl_iface * | |
454 | if_to_ctl(struct iface_af *ia) | |
455 | { | |
456 | static struct ctl_iface ictl; | |
457 | struct timeval now; | |
458 | struct adj *adj; | |
459 | ||
460 | ictl.af = ia->af; | |
461 | memcpy(ictl.name, ia->iface->name, sizeof(ictl.name)); | |
462 | ictl.ifindex = ia->iface->ifindex; | |
463 | ictl.state = ia->state; | |
8429abe0 | 464 | ictl.type = ia->iface->type; |
eac6e3f0 RW |
465 | ictl.hello_holdtime = if_get_hello_holdtime(ia); |
466 | ictl.hello_interval = if_get_hello_interval(ia); | |
8429abe0 RW |
467 | |
468 | gettimeofday(&now, NULL); | |
469 | if (ia->state != IF_STA_DOWN && | |
470 | ia->uptime != 0) { | |
471 | ictl.uptime = now.tv_sec - ia->uptime; | |
472 | } else | |
473 | ictl.uptime = 0; | |
474 | ||
475 | ictl.adj_cnt = 0; | |
057d48bd | 476 | RB_FOREACH(adj, ia_adj_head, &ia->adj_tree) |
8429abe0 RW |
477 | ictl.adj_cnt++; |
478 | ||
479 | return (&ictl); | |
480 | } | |
481 | ||
482 | /* multicast membership sockopts */ | |
483 | in_addr_t | |
484 | if_get_ipv4_addr(struct iface *iface) | |
485 | { | |
486 | struct if_addr *if_addr; | |
487 | ||
488 | LIST_FOREACH(if_addr, &iface->addr_list, entry) | |
489 | if (if_addr->af == AF_INET) | |
490 | return (if_addr->addr.v4.s_addr); | |
491 | ||
492 | return (INADDR_ANY); | |
493 | } | |
494 | ||
495 | static int | |
496 | if_join_ipv4_group(struct iface *iface, struct in_addr *addr) | |
497 | { | |
eac6e3f0 | 498 | struct in_addr if_addr; |
8429abe0 RW |
499 | |
500 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
501 | inet_ntoa(*addr)); | |
502 | ||
eac6e3f0 | 503 | if_addr.s_addr = if_get_ipv4_addr(iface); |
8429abe0 | 504 | |
eac6e3f0 RW |
505 | if (setsockopt_ipv4_multicast(global.ipv4.ldp_disc_socket, |
506 | IP_ADD_MEMBERSHIP, if_addr, addr->s_addr, iface->ifindex) < 0) { | |
8429abe0 RW |
507 | log_warn("%s: error IP_ADD_MEMBERSHIP, interface %s address %s", |
508 | __func__, iface->name, inet_ntoa(*addr)); | |
509 | return (-1); | |
510 | } | |
511 | return (0); | |
512 | } | |
513 | ||
514 | static int | |
515 | if_leave_ipv4_group(struct iface *iface, struct in_addr *addr) | |
516 | { | |
eac6e3f0 | 517 | struct in_addr if_addr; |
8429abe0 RW |
518 | |
519 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
520 | inet_ntoa(*addr)); | |
521 | ||
eac6e3f0 | 522 | if_addr.s_addr = if_get_ipv4_addr(iface); |
8429abe0 | 523 | |
eac6e3f0 RW |
524 | if (setsockopt_ipv4_multicast(global.ipv4.ldp_disc_socket, |
525 | IP_DROP_MEMBERSHIP, if_addr, addr->s_addr, iface->ifindex) < 0) { | |
8429abe0 RW |
526 | log_warn("%s: error IP_DROP_MEMBERSHIP, interface %s " |
527 | "address %s", __func__, iface->name, inet_ntoa(*addr)); | |
528 | return (-1); | |
529 | } | |
530 | ||
531 | return (0); | |
532 | } | |
533 | ||
534 | static int | |
535 | if_join_ipv6_group(struct iface *iface, struct in6_addr *addr) | |
536 | { | |
537 | struct ipv6_mreq mreq; | |
538 | ||
539 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
540 | log_in6addr(addr)); | |
541 | ||
542 | mreq.ipv6mr_multiaddr = *addr; | |
543 | mreq.ipv6mr_interface = iface->ifindex; | |
544 | ||
545 | if (setsockopt(global.ipv6.ldp_disc_socket, IPPROTO_IPV6, | |
546 | IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) < 0) { | |
547 | log_warn("%s: error IPV6_JOIN_GROUP, interface %s address %s", | |
548 | __func__, iface->name, log_in6addr(addr)); | |
549 | return (-1); | |
550 | } | |
551 | ||
552 | return (0); | |
553 | } | |
554 | ||
555 | static int | |
556 | if_leave_ipv6_group(struct iface *iface, struct in6_addr *addr) | |
557 | { | |
558 | struct ipv6_mreq mreq; | |
559 | ||
560 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
561 | log_in6addr(addr)); | |
562 | ||
563 | mreq.ipv6mr_multiaddr = *addr; | |
564 | mreq.ipv6mr_interface = iface->ifindex; | |
565 | ||
566 | if (setsockopt(global.ipv6.ldp_disc_socket, IPPROTO_IPV6, | |
567 | IPV6_LEAVE_GROUP, (void *)&mreq, sizeof(mreq)) < 0) { | |
568 | log_warn("%s: error IPV6_LEAVE_GROUP, interface %s address %s", | |
569 | __func__, iface->name, log_in6addr(addr)); | |
570 | return (-1); | |
571 | } | |
572 | ||
573 | return (0); | |
574 | } |