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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); | |
34 | static void if_update_af(struct iface_af *, int); | |
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; | |
142 | iface->flags = kif->flags; | |
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); | |
290 | ||
8429abe0 RW |
291 | if_start_hello_timer(ia); |
292 | return (0); | |
293 | } | |
294 | ||
295 | static int | |
296 | if_reset(struct iface *iface, int af) | |
297 | { | |
298 | struct iface_af *ia; | |
299 | struct adj *adj; | |
300 | ||
301 | log_debug("%s: %s address-family %s", __func__, iface->name, | |
302 | af_name(af)); | |
303 | ||
304 | ia = iface_af_get(iface, af); | |
305 | if_stop_hello_timer(ia); | |
306 | ||
057d48bd | 307 | while ((adj = RB_ROOT(&ia->adj_tree)) != NULL) |
8429abe0 RW |
308 | adj_del(adj, S_SHUTDOWN); |
309 | ||
310 | /* try to cleanup */ | |
311 | switch (af) { | |
312 | case AF_INET: | |
313 | if (global.ipv4.ldp_disc_socket != -1) | |
314 | if_leave_ipv4_group(iface, &global.mcast_addr_v4); | |
315 | break; | |
316 | case AF_INET6: | |
317 | if (global.ipv6.ldp_disc_socket != -1) | |
318 | if_leave_ipv6_group(iface, &global.mcast_addr_v6); | |
319 | break; | |
320 | default: | |
321 | fatalx("if_start: unknown af"); | |
322 | } | |
323 | ||
324 | return (0); | |
325 | } | |
326 | ||
327 | static void | |
328 | if_update_af(struct iface_af *ia, int link_ok) | |
329 | { | |
330 | int addr_ok = 0, socket_ok, rtr_id_ok; | |
331 | struct if_addr *if_addr; | |
332 | ||
333 | switch (ia->af) { | |
334 | case AF_INET: | |
335 | /* | |
336 | * NOTE: for LDPv4, each interface should have at least one | |
337 | * valid IP address otherwise they can not be enabled. | |
338 | */ | |
339 | LIST_FOREACH(if_addr, &ia->iface->addr_list, entry) { | |
340 | if (if_addr->af == AF_INET) { | |
341 | addr_ok = 1; | |
342 | break; | |
343 | } | |
344 | } | |
345 | break; | |
346 | case AF_INET6: | |
347 | /* for IPv6 the link-local address is enough. */ | |
348 | if (IN6_IS_ADDR_LINKLOCAL(&ia->iface->linklocal)) | |
349 | addr_ok = 1; | |
350 | break; | |
351 | default: | |
352 | fatalx("if_update_af: unknown af"); | |
353 | } | |
354 | ||
355 | if ((ldp_af_global_get(&global, ia->af))->ldp_disc_socket != -1) | |
356 | socket_ok = 1; | |
357 | else | |
358 | socket_ok = 0; | |
359 | ||
eac6e3f0 | 360 | if (ldp_rtr_id_get(leconf) != INADDR_ANY) |
8429abe0 RW |
361 | rtr_id_ok = 1; |
362 | else | |
363 | rtr_id_ok = 0; | |
364 | ||
365 | if (ia->state == IF_STA_DOWN) { | |
366 | if (!ia->enabled || !link_ok || !addr_ok || !socket_ok || | |
367 | !rtr_id_ok) | |
368 | return; | |
369 | ||
370 | ia->state = IF_STA_ACTIVE; | |
371 | if_start(ia->iface, ia->af); | |
372 | } else if (ia->state == IF_STA_ACTIVE) { | |
373 | if (ia->enabled && link_ok && addr_ok && socket_ok && rtr_id_ok) | |
374 | return; | |
375 | ||
376 | ia->state = IF_STA_DOWN; | |
377 | if_reset(ia->iface, ia->af); | |
378 | } | |
379 | } | |
380 | ||
381 | void | |
61cd1100 | 382 | ldp_if_update(struct iface *iface, int af) |
8429abe0 RW |
383 | { |
384 | int link_ok; | |
385 | ||
eac6e3f0 | 386 | link_ok = (iface->flags & IFF_UP) && (iface->flags & IFF_RUNNING); |
8429abe0 RW |
387 | |
388 | if (af == AF_INET || af == AF_UNSPEC) | |
389 | if_update_af(&iface->ipv4, link_ok); | |
390 | if (af == AF_INET6 || af == AF_UNSPEC) | |
391 | if_update_af(&iface->ipv6, link_ok); | |
392 | } | |
393 | ||
394 | void | |
395 | if_update_all(int af) | |
396 | { | |
397 | struct iface *iface; | |
398 | ||
7d3d7491 | 399 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) |
61cd1100 | 400 | ldp_if_update(iface, af); |
8429abe0 RW |
401 | } |
402 | ||
eac6e3f0 RW |
403 | uint16_t |
404 | if_get_hello_holdtime(struct iface_af *ia) | |
405 | { | |
406 | if (ia->hello_holdtime != 0) | |
407 | return (ia->hello_holdtime); | |
408 | ||
409 | if ((ldp_af_conf_get(leconf, ia->af))->lhello_holdtime != 0) | |
410 | return ((ldp_af_conf_get(leconf, ia->af))->lhello_holdtime); | |
411 | ||
412 | return (leconf->lhello_holdtime); | |
413 | } | |
414 | ||
415 | uint16_t | |
416 | if_get_hello_interval(struct iface_af *ia) | |
417 | { | |
418 | if (ia->hello_interval != 0) | |
419 | return (ia->hello_interval); | |
420 | ||
421 | if ((ldp_af_conf_get(leconf, ia->af))->lhello_interval != 0) | |
422 | return ((ldp_af_conf_get(leconf, ia->af))->lhello_interval); | |
423 | ||
424 | return (leconf->lhello_interval); | |
425 | } | |
426 | ||
8429abe0 RW |
427 | /* timers */ |
428 | /* ARGSUSED */ | |
eac6e3f0 RW |
429 | static int |
430 | if_hello_timer(struct thread *thread) | |
8429abe0 | 431 | { |
eac6e3f0 | 432 | struct iface_af *ia = THREAD_ARG(thread); |
8429abe0 | 433 | |
eac6e3f0 | 434 | ia->hello_timer = NULL; |
8429abe0 RW |
435 | send_hello(HELLO_LINK, ia, NULL); |
436 | if_start_hello_timer(ia); | |
eac6e3f0 RW |
437 | |
438 | return (0); | |
8429abe0 RW |
439 | } |
440 | ||
441 | static void | |
442 | if_start_hello_timer(struct iface_af *ia) | |
443 | { | |
eac6e3f0 RW |
444 | THREAD_TIMER_OFF(ia->hello_timer); |
445 | ia->hello_timer = thread_add_timer(master, if_hello_timer, ia, | |
446 | if_get_hello_interval(ia)); | |
8429abe0 RW |
447 | } |
448 | ||
449 | static void | |
450 | if_stop_hello_timer(struct iface_af *ia) | |
451 | { | |
eac6e3f0 | 452 | THREAD_TIMER_OFF(ia->hello_timer); |
8429abe0 RW |
453 | } |
454 | ||
455 | struct ctl_iface * | |
456 | if_to_ctl(struct iface_af *ia) | |
457 | { | |
458 | static struct ctl_iface ictl; | |
459 | struct timeval now; | |
460 | struct adj *adj; | |
461 | ||
462 | ictl.af = ia->af; | |
463 | memcpy(ictl.name, ia->iface->name, sizeof(ictl.name)); | |
464 | ictl.ifindex = ia->iface->ifindex; | |
465 | ictl.state = ia->state; | |
466 | ictl.flags = ia->iface->flags; | |
8429abe0 | 467 | ictl.type = ia->iface->type; |
eac6e3f0 RW |
468 | ictl.hello_holdtime = if_get_hello_holdtime(ia); |
469 | ictl.hello_interval = if_get_hello_interval(ia); | |
8429abe0 RW |
470 | |
471 | gettimeofday(&now, NULL); | |
472 | if (ia->state != IF_STA_DOWN && | |
473 | ia->uptime != 0) { | |
474 | ictl.uptime = now.tv_sec - ia->uptime; | |
475 | } else | |
476 | ictl.uptime = 0; | |
477 | ||
478 | ictl.adj_cnt = 0; | |
057d48bd | 479 | RB_FOREACH(adj, ia_adj_head, &ia->adj_tree) |
8429abe0 RW |
480 | ictl.adj_cnt++; |
481 | ||
482 | return (&ictl); | |
483 | } | |
484 | ||
485 | /* multicast membership sockopts */ | |
486 | in_addr_t | |
487 | if_get_ipv4_addr(struct iface *iface) | |
488 | { | |
489 | struct if_addr *if_addr; | |
490 | ||
491 | LIST_FOREACH(if_addr, &iface->addr_list, entry) | |
492 | if (if_addr->af == AF_INET) | |
493 | return (if_addr->addr.v4.s_addr); | |
494 | ||
495 | return (INADDR_ANY); | |
496 | } | |
497 | ||
498 | static int | |
499 | if_join_ipv4_group(struct iface *iface, struct in_addr *addr) | |
500 | { | |
eac6e3f0 | 501 | struct in_addr if_addr; |
8429abe0 RW |
502 | |
503 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
504 | inet_ntoa(*addr)); | |
505 | ||
eac6e3f0 | 506 | if_addr.s_addr = if_get_ipv4_addr(iface); |
8429abe0 | 507 | |
eac6e3f0 RW |
508 | if (setsockopt_ipv4_multicast(global.ipv4.ldp_disc_socket, |
509 | IP_ADD_MEMBERSHIP, if_addr, addr->s_addr, iface->ifindex) < 0) { | |
8429abe0 RW |
510 | log_warn("%s: error IP_ADD_MEMBERSHIP, interface %s address %s", |
511 | __func__, iface->name, inet_ntoa(*addr)); | |
512 | return (-1); | |
513 | } | |
514 | return (0); | |
515 | } | |
516 | ||
517 | static int | |
518 | if_leave_ipv4_group(struct iface *iface, struct in_addr *addr) | |
519 | { | |
eac6e3f0 | 520 | struct in_addr if_addr; |
8429abe0 RW |
521 | |
522 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
523 | inet_ntoa(*addr)); | |
524 | ||
eac6e3f0 | 525 | if_addr.s_addr = if_get_ipv4_addr(iface); |
8429abe0 | 526 | |
eac6e3f0 RW |
527 | if (setsockopt_ipv4_multicast(global.ipv4.ldp_disc_socket, |
528 | IP_DROP_MEMBERSHIP, if_addr, addr->s_addr, iface->ifindex) < 0) { | |
8429abe0 RW |
529 | log_warn("%s: error IP_DROP_MEMBERSHIP, interface %s " |
530 | "address %s", __func__, iface->name, inet_ntoa(*addr)); | |
531 | return (-1); | |
532 | } | |
533 | ||
534 | return (0); | |
535 | } | |
536 | ||
537 | static int | |
538 | if_join_ipv6_group(struct iface *iface, struct in6_addr *addr) | |
539 | { | |
540 | struct ipv6_mreq mreq; | |
541 | ||
542 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
543 | log_in6addr(addr)); | |
544 | ||
545 | mreq.ipv6mr_multiaddr = *addr; | |
546 | mreq.ipv6mr_interface = iface->ifindex; | |
547 | ||
548 | if (setsockopt(global.ipv6.ldp_disc_socket, IPPROTO_IPV6, | |
549 | IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) < 0) { | |
550 | log_warn("%s: error IPV6_JOIN_GROUP, interface %s address %s", | |
551 | __func__, iface->name, log_in6addr(addr)); | |
552 | return (-1); | |
553 | } | |
554 | ||
555 | return (0); | |
556 | } | |
557 | ||
558 | static int | |
559 | if_leave_ipv6_group(struct iface *iface, struct in6_addr *addr) | |
560 | { | |
561 | struct ipv6_mreq mreq; | |
562 | ||
563 | log_debug("%s: interface %s addr %s", __func__, iface->name, | |
564 | log_in6addr(addr)); | |
565 | ||
566 | mreq.ipv6mr_multiaddr = *addr; | |
567 | mreq.ipv6mr_interface = iface->ifindex; | |
568 | ||
569 | if (setsockopt(global.ipv6.ldp_disc_socket, IPPROTO_IPV6, | |
570 | IPV6_LEAVE_GROUP, (void *)&mreq, sizeof(mreq)) < 0) { | |
571 | log_warn("%s: error IPV6_LEAVE_GROUP, interface %s address %s", | |
572 | __func__, iface->name, log_in6addr(addr)); | |
573 | return (-1); | |
574 | } | |
575 | ||
576 | return (0); | |
577 | } |