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Commit | Line | Data |
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12e41d03 | 1 | /* |
896014f4 DL |
2 | * PIM for Quagga |
3 | * Copyright (C) 2008 Everton da Silva Marques | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; see the file COPYING; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
12e41d03 DL |
18 | |
19 | #include <zebra.h> | |
20 | ||
21 | #include "if.h" | |
22 | #include "log.h" | |
23 | #include "vty.h" | |
24 | #include "memory.h" | |
25 | #include "prefix.h" | |
469351b3 | 26 | #include "vrf.h" |
9f0edbc9 | 27 | #include "linklist.h" |
7176984f | 28 | #include "plist.h" |
a625e937 | 29 | #include "hash.h" |
12e41d03 DL |
30 | |
31 | #include "pimd.h" | |
cba44481 | 32 | #include "pim_zebra.h" |
12e41d03 DL |
33 | #include "pim_iface.h" |
34 | #include "pim_igmp.h" | |
35 | #include "pim_mroute.h" | |
36 | #include "pim_oil.h" | |
37 | #include "pim_str.h" | |
38 | #include "pim_pim.h" | |
39 | #include "pim_neighbor.h" | |
40 | #include "pim_ifchannel.h" | |
12e41d03 DL |
41 | #include "pim_sock.h" |
42 | #include "pim_time.h" | |
43 | #include "pim_ssmpingd.h" | |
7176984f | 44 | #include "pim_rp.h" |
cba44481 | 45 | #include "pim_nht.h" |
12e41d03 | 46 | |
c992c9a0 | 47 | struct interface *pim_regiface = NULL; |
ea4a71fc | 48 | struct list *pim_ifchannel_list = NULL; |
dc0665f1 | 49 | static int pim_iface_vif_index[MAXVIFS]; |
c992c9a0 | 50 | |
12e41d03 | 51 | static void pim_if_igmp_join_del_all(struct interface *ifp); |
dba88ccb CS |
52 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
53 | struct in_addr group_addr, struct in_addr source_addr); | |
12e41d03 | 54 | |
ea4a71fc DS |
55 | void |
56 | pim_if_init (void) | |
57 | { | |
dc0665f1 DS |
58 | int i; |
59 | ||
60 | for (i = 0; i < MAXVIFS; i++) | |
61 | pim_iface_vif_index[i] = 0; | |
62 | ||
ea4a71fc DS |
63 | pim_ifchannel_list = list_new(); |
64 | pim_ifchannel_list->cmp = (int (*)(void *, void *))pim_ifchannel_compare; | |
65 | } | |
66 | ||
67 | void | |
68 | pim_if_terminate (void) | |
69 | { | |
70 | if (pim_ifchannel_list) | |
71 | list_free (pim_ifchannel_list); | |
72 | } | |
73 | ||
74 | static void *if_list_clean(struct pim_interface *pim_ifp) | |
75 | { | |
76 | if (pim_ifp->igmp_join_list) { | |
77 | list_delete(pim_ifp->igmp_join_list); | |
78 | } | |
79 | ||
80 | if (pim_ifp->igmp_socket_list) { | |
81 | list_delete(pim_ifp->igmp_socket_list); | |
82 | } | |
83 | ||
84 | if (pim_ifp->pim_neighbor_list) { | |
85 | list_delete(pim_ifp->pim_neighbor_list); | |
86 | } | |
87 | ||
982bff89 DS |
88 | if (pim_ifp->upstream_switch_list) |
89 | list_delete(pim_ifp->upstream_switch_list); | |
90 | ||
ea4a71fc DS |
91 | if (pim_ifp->pim_ifchannel_list) { |
92 | list_delete(pim_ifp->pim_ifchannel_list); | |
93 | } | |
94 | ||
a625e937 | 95 | if (pim_ifp->pim_ifchannel_hash) |
982bff89 | 96 | hash_free(pim_ifp->pim_ifchannel_hash); |
a625e937 | 97 | |
ea4a71fc DS |
98 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
12e41d03 DL |
103 | struct pim_interface *pim_if_new(struct interface *ifp, int igmp, int pim) |
104 | { | |
105 | struct pim_interface *pim_ifp; | |
106 | ||
107 | zassert(ifp); | |
108 | zassert(!ifp->info); | |
109 | ||
36d9e7dc | 110 | pim_ifp = XCALLOC(MTYPE_PIM_INTERFACE, sizeof(*pim_ifp)); |
12e41d03 | 111 | if (!pim_ifp) { |
36d9e7dc | 112 | zlog_err("PIM XCALLOC(%zu) failure", sizeof(*pim_ifp)); |
12e41d03 DL |
113 | return 0; |
114 | } | |
115 | ||
116 | pim_ifp->options = 0; | |
117 | pim_ifp->mroute_vif_index = -1; | |
118 | ||
b05b72e8 | 119 | pim_ifp->igmp_version = IGMP_DEFAULT_VERSION; |
12e41d03 DL |
120 | pim_ifp->igmp_default_robustness_variable = IGMP_DEFAULT_ROBUSTNESS_VARIABLE; |
121 | pim_ifp->igmp_default_query_interval = IGMP_GENERAL_QUERY_INTERVAL; | |
122 | pim_ifp->igmp_query_max_response_time_dsec = IGMP_QUERY_MAX_RESPONSE_TIME_DSEC; | |
123 | pim_ifp->igmp_specific_query_max_response_time_dsec = IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC; | |
124 | ||
125 | /* | |
126 | RFC 3376: 8.3. Query Response Interval | |
127 | The number of seconds represented by the [Query Response Interval] | |
128 | must be less than the [Query Interval]. | |
129 | */ | |
130 | zassert(pim_ifp->igmp_query_max_response_time_dsec < pim_ifp->igmp_default_query_interval); | |
131 | ||
132 | if (pim) | |
133 | PIM_IF_DO_PIM(pim_ifp->options); | |
134 | if (igmp) | |
135 | PIM_IF_DO_IGMP(pim_ifp->options); | |
136 | ||
12e41d03 | 137 | PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(pim_ifp->options); |
12e41d03 | 138 | |
59ba0ac3 DS |
139 | pim_ifp->igmp_join_list = NULL; |
140 | pim_ifp->igmp_socket_list = NULL; | |
141 | pim_ifp->pim_neighbor_list = NULL; | |
982bff89 | 142 | pim_ifp->upstream_switch_list = NULL; |
59ba0ac3 | 143 | pim_ifp->pim_ifchannel_list = NULL; |
a625e937 | 144 | pim_ifp->pim_ifchannel_hash = NULL; |
e4cc0185 | 145 | pim_ifp->pim_generation_id = 0; |
12e41d03 DL |
146 | |
147 | /* list of struct igmp_sock */ | |
148 | pim_ifp->igmp_socket_list = list_new(); | |
149 | if (!pim_ifp->igmp_socket_list) { | |
150 | zlog_err("%s %s: failure: igmp_socket_list=list_new()", | |
151 | __FILE__, __PRETTY_FUNCTION__); | |
152 | return if_list_clean(pim_ifp); | |
153 | } | |
154 | pim_ifp->igmp_socket_list->del = (void (*)(void *)) igmp_sock_free; | |
155 | ||
156 | /* list of struct pim_neighbor */ | |
157 | pim_ifp->pim_neighbor_list = list_new(); | |
158 | if (!pim_ifp->pim_neighbor_list) { | |
159 | zlog_err("%s %s: failure: pim_neighbor_list=list_new()", | |
160 | __FILE__, __PRETTY_FUNCTION__); | |
161 | return if_list_clean(pim_ifp); | |
162 | } | |
163 | pim_ifp->pim_neighbor_list->del = (void (*)(void *)) pim_neighbor_free; | |
164 | ||
982bff89 DS |
165 | pim_ifp->upstream_switch_list = list_new(); |
166 | if (!pim_ifp->upstream_switch_list) { | |
167 | zlog_err("%s %s: failure: upstream_switch_list=list_new()", | |
168 | __FILE__, __PRETTY_FUNCTION__); | |
169 | return if_list_clean(pim_ifp); | |
170 | } | |
171 | ||
12e41d03 DL |
172 | /* list of struct pim_ifchannel */ |
173 | pim_ifp->pim_ifchannel_list = list_new(); | |
174 | if (!pim_ifp->pim_ifchannel_list) { | |
175 | zlog_err("%s %s: failure: pim_ifchannel_list=list_new()", | |
176 | __FILE__, __PRETTY_FUNCTION__); | |
177 | return if_list_clean(pim_ifp); | |
178 | } | |
179 | pim_ifp->pim_ifchannel_list->del = (void (*)(void *)) pim_ifchannel_free; | |
bbd64ce1 | 180 | pim_ifp->pim_ifchannel_list->cmp = (int (*)(void *, void *)) pim_ifchannel_compare; |
12e41d03 | 181 | |
a625e937 | 182 | pim_ifp->pim_ifchannel_hash = hash_create (pim_ifchannel_hash_key, |
dfd19ccc | 183 | pim_ifchannel_equal, NULL); |
a625e937 | 184 | |
12e41d03 DL |
185 | ifp->info = pim_ifp; |
186 | ||
187 | pim_sock_reset(ifp); | |
188 | ||
b8d16be2 | 189 | pim_if_add_vif(ifp); |
12e41d03 DL |
190 | |
191 | return pim_ifp; | |
192 | } | |
193 | ||
194 | void pim_if_delete(struct interface *ifp) | |
195 | { | |
196 | struct pim_interface *pim_ifp; | |
197 | ||
198 | zassert(ifp); | |
199 | pim_ifp = ifp->info; | |
200 | zassert(pim_ifp); | |
201 | ||
202 | if (pim_ifp->igmp_join_list) { | |
203 | pim_if_igmp_join_del_all(ifp); | |
204 | } | |
12e41d03 | 205 | |
cb24fec4 DS |
206 | pim_ifchannel_delete_all (ifp); |
207 | igmp_sock_delete_all (ifp); | |
12e41d03 | 208 | |
cb24fec4 | 209 | pim_neighbor_delete_all (ifp, "Interface removed from configuration"); |
12e41d03 | 210 | |
b8d16be2 | 211 | pim_if_del_vif(ifp); |
12e41d03 DL |
212 | |
213 | list_delete(pim_ifp->igmp_socket_list); | |
214 | list_delete(pim_ifp->pim_neighbor_list); | |
982bff89 | 215 | list_delete(pim_ifp->upstream_switch_list); |
12e41d03 DL |
216 | list_delete(pim_ifp->pim_ifchannel_list); |
217 | ||
a625e937 DS |
218 | hash_free (pim_ifp->pim_ifchannel_hash); |
219 | ||
12e41d03 DL |
220 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
221 | ||
59ba0ac3 | 222 | ifp->info = NULL; |
12e41d03 DL |
223 | } |
224 | ||
225 | void pim_if_update_could_assert(struct interface *ifp) | |
226 | { | |
227 | struct pim_interface *pim_ifp; | |
228 | struct listnode *node; | |
229 | struct listnode *next_node; | |
230 | struct pim_ifchannel *ch; | |
231 | ||
232 | pim_ifp = ifp->info; | |
233 | zassert(pim_ifp); | |
234 | ||
235 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
236 | pim_ifchannel_update_could_assert(ch); | |
237 | } | |
238 | } | |
239 | ||
240 | static void pim_if_update_my_assert_metric(struct interface *ifp) | |
241 | { | |
242 | struct pim_interface *pim_ifp; | |
243 | struct listnode *node; | |
244 | struct listnode *next_node; | |
245 | struct pim_ifchannel *ch; | |
246 | ||
247 | pim_ifp = ifp->info; | |
248 | zassert(pim_ifp); | |
249 | ||
250 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
251 | pim_ifchannel_update_my_assert_metric(ch); | |
252 | } | |
253 | } | |
254 | ||
255 | static void pim_addr_change(struct interface *ifp) | |
256 | { | |
257 | struct pim_interface *pim_ifp; | |
258 | ||
259 | pim_ifp = ifp->info; | |
260 | zassert(pim_ifp); | |
261 | ||
262 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- Done TODO T30 */ | |
263 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
264 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
265 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
266 | pim_if_update_assert_tracking_desired(ifp); /* depends on DR, join_desired */ | |
267 | ||
268 | /* | |
269 | RFC 4601: 4.3.1. Sending Hello Messages | |
270 | ||
271 | 1) Before an interface goes down or changes primary IP address, a | |
272 | Hello message with a zero HoldTime should be sent immediately | |
273 | (with the old IP address if the IP address changed). | |
274 | -- FIXME See CAVEAT C13 | |
275 | ||
276 | 2) After an interface has changed its IP address, it MUST send a | |
277 | Hello message with its new IP address. | |
278 | -- DONE below | |
279 | ||
280 | 3) If an interface changes one of its secondary IP addresses, a | |
281 | Hello message with an updated Address_List option and a non-zero | |
282 | HoldTime should be sent immediately. | |
283 | -- FIXME See TODO T31 | |
284 | */ | |
285 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
286 | if (pim_ifp->pim_sock_fd < 0) | |
287 | return; | |
288 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
289 | } | |
290 | ||
12e41d03 DL |
291 | static int detect_primary_address_change(struct interface *ifp, |
292 | int force_prim_as_any, | |
293 | const char *caller) | |
294 | { | |
4763cd0e | 295 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 DL |
296 | struct in_addr new_prim_addr; |
297 | int changed; | |
298 | ||
12e41d03 | 299 | if (force_prim_as_any) |
7656e7fc | 300 | new_prim_addr.s_addr = INADDR_ANY; |
12e41d03 DL |
301 | else |
302 | new_prim_addr = pim_find_primary_addr(ifp); | |
303 | ||
304 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
305 | ||
306 | if (PIM_DEBUG_ZEBRA) { | |
eaa54bdb DW |
307 | char new_prim_str[INET_ADDRSTRLEN]; |
308 | char old_prim_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
309 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, sizeof(new_prim_str)); |
310 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, sizeof(old_prim_str)); | |
311 | zlog_debug("%s: old=%s new=%s on interface %s: %s", | |
312 | __PRETTY_FUNCTION__, | |
313 | old_prim_str, new_prim_str, ifp->name, | |
314 | changed ? "changed" : "unchanged"); | |
315 | } | |
316 | ||
317 | if (changed) { | |
12e41d03 | 318 | pim_ifp->primary_address = new_prim_addr; |
12e41d03 DL |
319 | } |
320 | ||
321 | return changed; | |
322 | } | |
323 | ||
7176984f | 324 | static int pim_sec_addr_comp(const void *p1, const void *p2) |
325 | { | |
326 | const struct pim_secondary_addr *sec1 = p1; | |
327 | const struct pim_secondary_addr *sec2 = p2; | |
328 | ||
294b6d72 DS |
329 | if (sec1->addr.family == AF_INET && |
330 | sec2->addr.family == AF_INET6) | |
7176984f | 331 | return -1; |
332 | ||
294b6d72 DS |
333 | if (sec1->addr.family == AF_INET6 && |
334 | sec2->addr.family == AF_INET) | |
7176984f | 335 | return 1; |
336 | ||
294b6d72 DS |
337 | if (sec1->addr.family == AF_INET) |
338 | { | |
339 | if (ntohl(sec1->addr.u.prefix4.s_addr) < ntohl(sec2->addr.u.prefix4.s_addr)) | |
340 | return -1; | |
341 | ||
342 | if (ntohl(sec1->addr.u.prefix4.s_addr) > ntohl(sec2->addr.u.prefix4.s_addr)) | |
343 | return 1; | |
344 | } | |
345 | else | |
346 | { | |
347 | return memcmp (&sec1->addr.u.prefix6, | |
348 | &sec2->addr.u.prefix6, | |
349 | sizeof (struct in6_addr)); | |
350 | } | |
351 | ||
7176984f | 352 | return 0; |
353 | } | |
354 | ||
355 | static void pim_sec_addr_free(struct pim_secondary_addr *sec_addr) | |
356 | { | |
357 | XFREE(MTYPE_PIM_SEC_ADDR, sec_addr); | |
358 | } | |
359 | ||
360 | static struct pim_secondary_addr * | |
294b6d72 | 361 | pim_sec_addr_find(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 362 | { |
363 | struct pim_secondary_addr *sec_addr; | |
364 | struct listnode *node; | |
365 | ||
366 | if (!pim_ifp->sec_addr_list) { | |
367 | return NULL; | |
368 | } | |
369 | ||
370 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { | |
294b6d72 | 371 | if (prefix_cmp(&sec_addr->addr, addr)) { |
7176984f | 372 | return sec_addr; |
373 | } | |
374 | } | |
375 | ||
376 | return NULL; | |
377 | } | |
378 | ||
379 | static void pim_sec_addr_del(struct pim_interface *pim_ifp, | |
380 | struct pim_secondary_addr *sec_addr) | |
381 | { | |
382 | listnode_delete(pim_ifp->sec_addr_list, sec_addr); | |
383 | pim_sec_addr_free(sec_addr); | |
384 | } | |
385 | ||
294b6d72 | 386 | static int pim_sec_addr_add(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 387 | { |
388 | int changed = 0; | |
389 | struct pim_secondary_addr *sec_addr; | |
390 | ||
391 | sec_addr = pim_sec_addr_find(pim_ifp, addr); | |
392 | if (sec_addr) { | |
393 | sec_addr->flags &= ~PIM_SEC_ADDRF_STALE; | |
394 | return changed; | |
395 | } | |
396 | ||
397 | if (!pim_ifp->sec_addr_list) { | |
398 | pim_ifp->sec_addr_list = list_new(); | |
399 | pim_ifp->sec_addr_list->del = (void (*)(void *))pim_sec_addr_free; | |
400 | pim_ifp->sec_addr_list->cmp = (int (*)(void *, void *))pim_sec_addr_comp; | |
401 | } | |
402 | ||
403 | sec_addr = XCALLOC(MTYPE_PIM_SEC_ADDR, sizeof(*sec_addr)); | |
404 | if (!sec_addr) { | |
405 | if (list_isempty(pim_ifp->sec_addr_list)) { | |
406 | list_free(pim_ifp->sec_addr_list); | |
407 | pim_ifp->sec_addr_list = NULL; | |
408 | } | |
409 | return changed; | |
410 | } | |
411 | ||
412 | changed = 1; | |
294b6d72 | 413 | sec_addr->addr = *addr; |
7176984f | 414 | listnode_add_sort(pim_ifp->sec_addr_list, sec_addr); |
415 | ||
416 | return changed; | |
417 | } | |
418 | ||
419 | static int pim_sec_addr_del_all(struct pim_interface *pim_ifp) | |
420 | { | |
421 | int changed = 0; | |
422 | ||
423 | if (!pim_ifp->sec_addr_list) { | |
424 | return changed; | |
425 | } | |
426 | if (!list_isempty(pim_ifp->sec_addr_list)) { | |
427 | changed = 1; | |
428 | /* remove all nodes and free up the list itself */ | |
429 | list_delete_all_node(pim_ifp->sec_addr_list); | |
430 | list_free(pim_ifp->sec_addr_list); | |
431 | pim_ifp->sec_addr_list = NULL; | |
432 | } | |
433 | ||
434 | return changed; | |
435 | } | |
436 | ||
437 | static int pim_sec_addr_update(struct interface *ifp) | |
438 | { | |
439 | struct pim_interface *pim_ifp = ifp->info; | |
440 | struct connected *ifc; | |
441 | struct listnode *node; | |
442 | struct listnode *nextnode; | |
443 | struct pim_secondary_addr *sec_addr; | |
444 | int changed = 0; | |
445 | ||
446 | if (pim_ifp->sec_addr_list) { | |
447 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { | |
448 | sec_addr->flags |= PIM_SEC_ADDRF_STALE; | |
449 | } | |
450 | } | |
451 | ||
452 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
453 | struct prefix *p = ifc->address; | |
454 | ||
7176984f | 455 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { |
456 | continue; | |
457 | } | |
458 | ||
459 | if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) { | |
460 | /* don't add the primary address into the secondary address list */ | |
461 | continue; | |
462 | } | |
463 | ||
294b6d72 | 464 | if (pim_sec_addr_add(pim_ifp, p)) { |
7176984f | 465 | changed = 1; |
466 | } | |
467 | } | |
468 | ||
469 | if (pim_ifp->sec_addr_list) { | |
470 | /* Drop stale entries */ | |
471 | for (ALL_LIST_ELEMENTS(pim_ifp->sec_addr_list, node, nextnode, sec_addr)) { | |
472 | if (sec_addr->flags & PIM_SEC_ADDRF_STALE) { | |
473 | pim_sec_addr_del(pim_ifp, sec_addr); | |
474 | changed = 1; | |
475 | } | |
476 | } | |
477 | ||
478 | /* If the list went empty free it up */ | |
479 | if (list_isempty(pim_ifp->sec_addr_list)) { | |
480 | list_free(pim_ifp->sec_addr_list); | |
481 | pim_ifp->sec_addr_list = NULL; | |
482 | } | |
483 | } | |
484 | ||
485 | return changed; | |
486 | } | |
487 | ||
4763cd0e | 488 | static int detect_secondary_address_change(struct interface *ifp, |
7176984f | 489 | int force_prim_as_any, |
12e41d03 DL |
490 | const char *caller) |
491 | { | |
4763cd0e | 492 | struct pim_interface *pim_ifp = ifp->info; |
7176984f | 493 | int changed = 0; |
12e41d03 | 494 | |
7176984f | 495 | if (force_prim_as_any) { |
496 | /* if primary address is being forced to zero just flush the | |
497 | * secondary address list */ | |
4763cd0e | 498 | changed = pim_sec_addr_del_all(pim_ifp); |
7176984f | 499 | } else { |
500 | /* re-evaluate the secondary address list */ | |
501 | changed = pim_sec_addr_update(ifp); | |
502 | } | |
503 | ||
4763cd0e | 504 | return changed; |
505 | } | |
506 | ||
507 | static void detect_address_change(struct interface *ifp, | |
508 | int force_prim_as_any, | |
509 | const char *caller) | |
510 | { | |
511 | int changed = 0; | |
512 | struct pim_interface *pim_ifp; | |
12e41d03 | 513 | |
4763cd0e | 514 | pim_ifp = ifp->info; |
515 | if (!pim_ifp) | |
12e41d03 | 516 | return; |
4763cd0e | 517 | |
518 | if (detect_primary_address_change(ifp, force_prim_as_any, caller)) { | |
519 | changed = 1; | |
12e41d03 DL |
520 | } |
521 | ||
4763cd0e | 522 | if (detect_secondary_address_change(ifp, force_prim_as_any, caller)) { |
523 | changed = 1; | |
524 | } | |
525 | ||
526 | ||
527 | if (changed) { | |
528 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
529 | return; | |
530 | } | |
531 | ||
532 | pim_addr_change(ifp); | |
12e41d03 DL |
533 | } |
534 | ||
4763cd0e | 535 | /* XXX: if we have unnumbered interfaces we need to run detect address |
536 | * address change on all of them when the lo address changes */ | |
12e41d03 DL |
537 | } |
538 | ||
4763cd0e | 539 | int pim_update_source_set(struct interface *ifp, struct in_addr source) |
12e41d03 | 540 | { |
4763cd0e | 541 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 542 | |
4763cd0e | 543 | if (!pim_ifp) { |
544 | return PIM_IFACE_NOT_FOUND; | |
12e41d03 DL |
545 | } |
546 | ||
4763cd0e | 547 | if (pim_ifp->update_source.s_addr == source.s_addr) { |
548 | return PIM_UPDATE_SOURCE_DUP; | |
549 | } | |
550 | ||
551 | pim_ifp->update_source = source; | |
552 | detect_address_change(ifp, 0 /* force_prim_as_any */, | |
553 | __PRETTY_FUNCTION__); | |
554 | ||
555 | return PIM_SUCCESS; | |
12e41d03 DL |
556 | } |
557 | ||
558 | void pim_if_addr_add(struct connected *ifc) | |
559 | { | |
560 | struct pim_interface *pim_ifp; | |
561 | struct interface *ifp; | |
562 | struct in_addr ifaddr; | |
563 | ||
564 | zassert(ifc); | |
565 | ||
566 | ifp = ifc->ifp; | |
567 | zassert(ifp); | |
568 | pim_ifp = ifp->info; | |
569 | if (!pim_ifp) | |
570 | return; | |
571 | ||
572 | if (!if_is_operative(ifp)) | |
573 | return; | |
574 | ||
7adf0260 | 575 | if (PIM_DEBUG_ZEBRA) { |
12e41d03 DL |
576 | char buf[BUFSIZ]; |
577 | prefix2str(ifc->address, buf, BUFSIZ); | |
578 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
579 | __PRETTY_FUNCTION__, | |
580 | ifp->name, ifp->ifindex, buf, | |
581 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) ? | |
582 | "secondary" : "primary"); | |
583 | } | |
584 | ||
585 | ifaddr = ifc->address->u.prefix4; | |
586 | ||
587 | detect_address_change(ifp, 0, __PRETTY_FUNCTION__); | |
588 | ||
294b6d72 DS |
589 | if (ifc->address->family != AF_INET) |
590 | return; | |
591 | ||
12e41d03 DL |
592 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { |
593 | struct igmp_sock *igmp; | |
594 | ||
595 | /* lookup IGMP socket */ | |
596 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
294b6d72 | 597 | ifaddr); |
12e41d03 DL |
598 | if (!igmp) { |
599 | /* if addr new, add IGMP socket */ | |
600 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, ifp); | |
601 | } | |
dba88ccb CS |
602 | |
603 | /* Replay Static IGMP groups */ | |
604 | if (pim_ifp->igmp_join_list) | |
605 | { | |
606 | struct listnode *node; | |
607 | struct listnode *nextnode; | |
608 | struct igmp_join *ij; | |
609 | int join_fd; | |
610 | ||
611 | for (ALL_LIST_ELEMENTS (pim_ifp->igmp_join_list, node, nextnode, ij)) | |
612 | { | |
613 | /* Close socket and reopen with Source and Group */ | |
614 | close(ij->sock_fd); | |
615 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, ij->group_addr, ij->source_addr); | |
616 | if (join_fd < 0) | |
617 | { | |
618 | char group_str[INET_ADDRSTRLEN]; | |
619 | char source_str[INET_ADDRSTRLEN]; | |
620 | pim_inet4_dump("<grp?>", ij->group_addr, group_str, sizeof(group_str)); | |
621 | pim_inet4_dump("<src?>", ij->source_addr, source_str, sizeof(source_str)); | |
622 | zlog_warn("%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
623 | __PRETTY_FUNCTION__, | |
624 | group_str, source_str, ifp->name); | |
625 | /* warning only */ | |
626 | } | |
627 | else | |
628 | ij->sock_fd = join_fd; | |
629 | } | |
630 | } | |
12e41d03 DL |
631 | } /* igmp */ |
632 | ||
cba44481 CS |
633 | if (PIM_IF_TEST_PIM(pim_ifp->options)) |
634 | { | |
12e41d03 | 635 | |
cba44481 CS |
636 | if (PIM_INADDR_ISNOT_ANY (pim_ifp->primary_address)) |
637 | { | |
638 | ||
639 | /* Interface has a valid socket ? */ | |
640 | if (pim_ifp->pim_sock_fd < 0) | |
641 | { | |
642 | if (pim_sock_add (ifp)) | |
643 | { | |
644 | zlog_warn ("Failure creating PIM socket for interface %s", | |
645 | ifp->name); | |
646 | } | |
647 | } | |
648 | struct pim_nexthop_cache *pnc = NULL; | |
649 | struct pim_rpf rpf; | |
650 | struct zclient *zclient = NULL; | |
651 | ||
652 | zclient = pim_zebra_zclient_get (); | |
653 | /* RP config might come prior to (local RP's interface) IF UP event. | |
654 | In this case, pnc would not have pim enabled nexthops. | |
655 | Once Interface is UP and pim info is available, reregister | |
656 | with RNH address to receive update and add the interface as nexthop. */ | |
657 | memset (&rpf, 0, sizeof (struct pim_rpf)); | |
658 | rpf.rpf_addr.family = AF_INET; | |
659 | rpf.rpf_addr.prefixlen = IPV4_MAX_BITLEN; | |
660 | rpf.rpf_addr.u.prefix4 = ifc->address->u.prefix4; | |
661 | pnc = pim_nexthop_cache_find (&rpf); | |
662 | if (pnc) | |
663 | pim_sendmsg_zebra_rnh (zclient, pnc, | |
664 | ZEBRA_NEXTHOP_REGISTER); | |
665 | } | |
666 | } /* pim */ | |
12e41d03 | 667 | |
12e41d03 DL |
668 | /* |
669 | PIM or IGMP is enabled on interface, and there is at least one | |
670 | address assigned, then try to create a vif_index. | |
671 | */ | |
b8d16be2 DS |
672 | if (pim_ifp->mroute_vif_index < 0) { |
673 | pim_if_add_vif(ifp); | |
12e41d03 | 674 | } |
b8d16be2 | 675 | pim_ifchannel_scan_forward_start (ifp); |
12e41d03 DL |
676 | } |
677 | ||
678 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
679 | { | |
680 | struct pim_interface *pim_ifp = ifc->ifp->info; | |
681 | struct igmp_sock *igmp; | |
682 | struct in_addr ifaddr; | |
683 | ||
684 | if (ifc->address->family != AF_INET) { | |
685 | /* non-IPv4 address */ | |
686 | return; | |
687 | } | |
688 | ||
689 | if (!pim_ifp) { | |
690 | /* IGMP not enabled on interface */ | |
691 | return; | |
692 | } | |
693 | ||
694 | ifaddr = ifc->address->u.prefix4; | |
695 | ||
696 | /* lookup IGMP socket */ | |
697 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
698 | ifaddr); | |
699 | if (igmp) { | |
700 | /* if addr found, del IGMP socket */ | |
701 | igmp_sock_delete(igmp); | |
702 | } | |
703 | } | |
704 | ||
705 | static void pim_if_addr_del_pim(struct connected *ifc) | |
706 | { | |
707 | struct pim_interface *pim_ifp = ifc->ifp->info; | |
708 | ||
709 | if (ifc->address->family != AF_INET) { | |
710 | /* non-IPv4 address */ | |
711 | return; | |
712 | } | |
713 | ||
714 | if (!pim_ifp) { | |
715 | /* PIM not enabled on interface */ | |
716 | return; | |
717 | } | |
718 | ||
719 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
720 | /* Interface keeps a valid primary address */ | |
721 | return; | |
722 | } | |
723 | ||
724 | if (pim_ifp->pim_sock_fd < 0) { | |
725 | /* Interface does not hold a valid socket any longer */ | |
726 | return; | |
727 | } | |
728 | ||
729 | /* | |
730 | pim_sock_delete() closes the socket, stops read and timer threads, | |
731 | and kills all neighbors. | |
732 | */ | |
733 | pim_sock_delete(ifc->ifp, "last address has been removed from interface"); | |
734 | } | |
735 | ||
736 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) | |
737 | { | |
738 | struct interface *ifp; | |
739 | ||
740 | zassert(ifc); | |
741 | ifp = ifc->ifp; | |
742 | zassert(ifp); | |
743 | ||
294b6d72 DS |
744 | if (ifc->address->family != AF_INET) |
745 | return; | |
746 | ||
7adf0260 | 747 | if (PIM_DEBUG_ZEBRA) { |
12e41d03 DL |
748 | char buf[BUFSIZ]; |
749 | prefix2str(ifc->address, buf, BUFSIZ); | |
750 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
294b6d72 DS |
751 | __PRETTY_FUNCTION__, |
752 | ifp->name, ifp->ifindex, buf, | |
753 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) ? | |
754 | "secondary" : "primary"); | |
12e41d03 DL |
755 | } |
756 | ||
757 | detect_address_change(ifp, force_prim_as_any, __PRETTY_FUNCTION__); | |
758 | ||
759 | pim_if_addr_del_igmp(ifc); | |
760 | pim_if_addr_del_pim(ifc); | |
761 | } | |
762 | ||
763 | void pim_if_addr_add_all(struct interface *ifp) | |
764 | { | |
765 | struct connected *ifc; | |
766 | struct listnode *node; | |
767 | struct listnode *nextnode; | |
d8424057 DS |
768 | int v4_addrs = 0; |
769 | int v6_addrs = 0; | |
7176984f | 770 | struct pim_interface *pim_ifp = ifp->info; |
771 | ||
12e41d03 DL |
772 | |
773 | /* PIM/IGMP enabled ? */ | |
7176984f | 774 | if (!pim_ifp) |
12e41d03 DL |
775 | return; |
776 | ||
777 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
778 | struct prefix *p = ifc->address; | |
779 | ||
780 | if (p->family != AF_INET) | |
294b6d72 DS |
781 | v6_addrs++; |
782 | else | |
783 | v4_addrs++; | |
12e41d03 DL |
784 | pim_if_addr_add(ifc); |
785 | } | |
d8424057 DS |
786 | |
787 | if (!v4_addrs && v6_addrs && !if_is_loopback (ifp)) | |
788 | { | |
7176984f | 789 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { |
d8424057 DS |
790 | |
791 | /* Interface has a valid primary address ? */ | |
792 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
793 | ||
794 | /* Interface has a valid socket ? */ | |
795 | if (pim_ifp->pim_sock_fd < 0) { | |
796 | if (pim_sock_add(ifp)) { | |
797 | zlog_warn("Failure creating PIM socket for interface %s", | |
798 | ifp->name); | |
799 | } | |
800 | } | |
801 | ||
802 | } | |
803 | } /* pim */ | |
804 | } | |
b8d16be2 DS |
805 | /* |
806 | * PIM or IGMP is enabled on interface, and there is at least one | |
807 | * address assigned, then try to create a vif_index. | |
808 | */ | |
809 | if (pim_ifp->mroute_vif_index < 0) { | |
810 | pim_if_add_vif(ifp); | |
ef71d1f8 | 811 | } |
b8d16be2 | 812 | pim_ifchannel_scan_forward_start (ifp); |
ef71d1f8 | 813 | |
da3dcffb | 814 | pim_rp_setup(); |
7176984f | 815 | pim_rp_check_on_if_add(pim_ifp); |
12e41d03 DL |
816 | } |
817 | ||
818 | void pim_if_addr_del_all(struct interface *ifp) | |
819 | { | |
820 | struct connected *ifc; | |
821 | struct listnode *node; | |
822 | struct listnode *nextnode; | |
823 | ||
824 | /* PIM/IGMP enabled ? */ | |
825 | if (!ifp->info) | |
826 | return; | |
827 | ||
828 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
829 | struct prefix *p = ifc->address; | |
830 | ||
831 | if (p->family != AF_INET) | |
832 | continue; | |
833 | ||
834 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); | |
835 | } | |
da3dcffb DS |
836 | |
837 | pim_rp_setup(); | |
7176984f | 838 | pim_i_am_rp_re_evaluate(); |
12e41d03 DL |
839 | } |
840 | ||
841 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
842 | { | |
843 | struct connected *ifc; | |
844 | struct listnode *node; | |
845 | struct listnode *nextnode; | |
846 | ||
847 | /* PIM/IGMP enabled ? */ | |
848 | if (!ifp->info) | |
849 | return; | |
850 | ||
851 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
852 | struct prefix *p = ifc->address; | |
853 | ||
854 | if (p->family != AF_INET) | |
855 | continue; | |
856 | ||
857 | pim_if_addr_del_igmp(ifc); | |
858 | } | |
859 | } | |
860 | ||
861 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
862 | { | |
863 | struct connected *ifc; | |
864 | struct listnode *node; | |
865 | struct listnode *nextnode; | |
866 | ||
867 | /* PIM/IGMP enabled ? */ | |
868 | if (!ifp->info) | |
869 | return; | |
870 | ||
871 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
872 | struct prefix *p = ifc->address; | |
873 | ||
874 | if (p->family != AF_INET) | |
875 | continue; | |
876 | ||
877 | pim_if_addr_del_pim(ifc); | |
878 | } | |
879 | } | |
880 | ||
89f1d91e DS |
881 | struct in_addr |
882 | pim_find_primary_addr (struct interface *ifp) | |
12e41d03 DL |
883 | { |
884 | struct connected *ifc; | |
885 | struct listnode *node; | |
886 | struct in_addr addr; | |
d8424057 DS |
887 | int v4_addrs = 0; |
888 | int v6_addrs = 0; | |
4763cd0e | 889 | struct pim_interface *pim_ifp = ifp->info; |
890 | ||
891 | if (pim_ifp && PIM_INADDR_ISNOT_ANY(pim_ifp->update_source)) { | |
892 | return pim_ifp->update_source; | |
893 | } | |
12e41d03 DL |
894 | |
895 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
896 | struct prefix *p = ifc->address; | |
d8424057 | 897 | |
12e41d03 | 898 | if (p->family != AF_INET) |
d8424057 DS |
899 | { |
900 | v6_addrs++; | |
901 | continue; | |
902 | } | |
12e41d03 DL |
903 | |
904 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
905 | zlog_warn("%s: null IPv4 address connected to interface %s", | |
906 | __PRETTY_FUNCTION__, ifp->name); | |
907 | continue; | |
908 | } | |
909 | ||
d8424057 DS |
910 | v4_addrs++; |
911 | ||
12e41d03 DL |
912 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) |
913 | continue; | |
914 | ||
915 | return p->u.prefix4; | |
916 | } | |
917 | ||
d8424057 DS |
918 | /* |
919 | * If we have no v4_addrs and v6 is configured | |
920 | * We probably are using unnumbered | |
921 | * So let's grab the loopbacks v4 address | |
922 | * and use that as the primary address | |
923 | */ | |
924 | if (!v4_addrs && v6_addrs && !if_is_loopback (ifp)) | |
925 | { | |
926 | struct interface *lo_ifp; | |
1306c09a | 927 | lo_ifp = if_lookup_by_name ("lo", VRF_DEFAULT); |
d8424057 DS |
928 | if (lo_ifp) |
929 | return pim_find_primary_addr (lo_ifp); | |
930 | } | |
931 | ||
12e41d03 DL |
932 | addr.s_addr = PIM_NET_INADDR_ANY; |
933 | ||
934 | return addr; | |
935 | } | |
936 | ||
9df99407 | 937 | static int |
744d91b3 DS |
938 | pim_iface_next_vif_index (struct interface *ifp) |
939 | { | |
dc0665f1 | 940 | int i; |
744d91b3 DS |
941 | /* |
942 | * The pimreg vif is always going to be in index 0 | |
943 | * of the table. | |
944 | */ | |
945 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
946 | return 0; | |
947 | ||
dc0665f1 DS |
948 | for (i = 1 ; i < MAXVIFS; i++) |
949 | { | |
950 | if (pim_iface_vif_index[i] == 0) | |
951 | return i; | |
952 | } | |
953 | return MAXVIFS; | |
744d91b3 DS |
954 | } |
955 | ||
12e41d03 DL |
956 | /* |
957 | pim_if_add_vif() uses ifindex as vif_index | |
958 | ||
959 | see also pim_if_find_vifindex_by_ifindex() | |
960 | */ | |
961 | int pim_if_add_vif(struct interface *ifp) | |
962 | { | |
963 | struct pim_interface *pim_ifp = ifp->info; | |
964 | struct in_addr ifaddr; | |
b3f2bf7c | 965 | unsigned char flags = 0; |
12e41d03 DL |
966 | |
967 | zassert(pim_ifp); | |
968 | ||
969 | if (pim_ifp->mroute_vif_index > 0) { | |
970 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
971 | __PRETTY_FUNCTION__, | |
972 | pim_ifp->mroute_vif_index, ifp->name, ifp->ifindex); | |
973 | return -1; | |
974 | } | |
975 | ||
e34a317a | 976 | if (ifp->ifindex < 0) { |
12e41d03 DL |
977 | zlog_warn("%s: ifindex=%d < 1 on interface %s", |
978 | __PRETTY_FUNCTION__, | |
979 | ifp->ifindex, ifp->name); | |
980 | return -2; | |
981 | } | |
982 | ||
12e41d03 | 983 | ifaddr = pim_ifp->primary_address; |
c992c9a0 | 984 | if (ifp->ifindex != PIM_OIF_PIM_REGISTER_VIF && PIM_INADDR_IS_ANY(ifaddr)) { |
12e41d03 DL |
985 | zlog_warn("%s: could not get address for interface %s ifindex=%d", |
986 | __PRETTY_FUNCTION__, | |
987 | ifp->name, ifp->ifindex); | |
988 | return -4; | |
989 | } | |
990 | ||
744d91b3 DS |
991 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index (ifp); |
992 | ||
993 | if (pim_ifp->mroute_vif_index >= MAXVIFS) | |
994 | { | |
995 | zlog_warn("%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
996 | __PRETTY_FUNCTION__, | |
997 | MAXVIFS, ifp->name); | |
998 | return -3; | |
999 | } | |
1000 | ||
b3f2bf7c RW |
1001 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) |
1002 | flags = VIFF_REGISTER; | |
1003 | #ifdef VIFF_USE_IFINDEX | |
1004 | else | |
1005 | flags = VIFF_USE_IFINDEX; | |
1006 | #endif | |
1007 | ||
744d91b3 | 1008 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
12e41d03 DL |
1009 | /* pim_mroute_add_vif reported error */ |
1010 | return -5; | |
1011 | } | |
1012 | ||
dc0665f1 | 1013 | pim_iface_vif_index[pim_ifp->mroute_vif_index] = 1; |
12e41d03 DL |
1014 | return 0; |
1015 | } | |
1016 | ||
12e41d03 DL |
1017 | int pim_if_del_vif(struct interface *ifp) |
1018 | { | |
1019 | struct pim_interface *pim_ifp = ifp->info; | |
12e41d03 DL |
1020 | |
1021 | if (pim_ifp->mroute_vif_index < 1) { | |
1022 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
1023 | __PRETTY_FUNCTION__, | |
1024 | pim_ifp->mroute_vif_index, ifp->name, ifp->ifindex); | |
1025 | return -1; | |
1026 | } | |
1027 | ||
429a291b | 1028 | pim_mroute_del_vif(pim_ifp->mroute_vif_index); |
12e41d03 DL |
1029 | |
1030 | /* | |
dc0665f1 | 1031 | Update vif_index |
12e41d03 | 1032 | */ |
dc0665f1 | 1033 | pim_iface_vif_index[pim_ifp->mroute_vif_index] = 0; |
12e41d03 DL |
1034 | |
1035 | pim_ifp->mroute_vif_index = -1; | |
1036 | ||
12e41d03 DL |
1037 | return 0; |
1038 | } | |
1039 | ||
1040 | void pim_if_add_vif_all() | |
1041 | { | |
1042 | struct listnode *ifnode; | |
1043 | struct listnode *ifnextnode; | |
1044 | struct interface *ifp; | |
1045 | ||
469351b3 | 1046 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), ifnode, ifnextnode, ifp)) { |
12e41d03 DL |
1047 | if (!ifp->info) |
1048 | continue; | |
1049 | ||
1050 | pim_if_add_vif(ifp); | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | void pim_if_del_vif_all() | |
1055 | { | |
1056 | struct listnode *ifnode; | |
1057 | struct listnode *ifnextnode; | |
1058 | struct interface *ifp; | |
1059 | ||
469351b3 | 1060 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), ifnode, ifnextnode, ifp)) { |
12e41d03 DL |
1061 | if (!ifp->info) |
1062 | continue; | |
1063 | ||
1064 | pim_if_del_vif(ifp); | |
1065 | } | |
1066 | } | |
1067 | ||
b892f1dd | 1068 | struct interface *pim_if_find_by_vif_index(ifindex_t vif_index) |
12e41d03 DL |
1069 | { |
1070 | struct listnode *ifnode; | |
1071 | struct interface *ifp; | |
1072 | ||
ae90dfbb | 1073 | if (vif_index == 0) |
1306c09a | 1074 | return if_lookup_by_name ("pimreg", VRF_DEFAULT); |
ae90dfbb | 1075 | |
469351b3 | 1076 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), ifnode, ifp)) { |
12e41d03 DL |
1077 | if (ifp->info) { |
1078 | struct pim_interface *pim_ifp; | |
1079 | pim_ifp = ifp->info; | |
b892f1dd | 1080 | |
12e41d03 DL |
1081 | if (vif_index == pim_ifp->mroute_vif_index) |
1082 | return ifp; | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | return 0; | |
1087 | } | |
1088 | ||
1089 | /* | |
1090 | pim_if_add_vif() uses ifindex as vif_index | |
1091 | */ | |
b892f1dd | 1092 | int pim_if_find_vifindex_by_ifindex(ifindex_t ifindex) |
12e41d03 | 1093 | { |
ae90dfbb DS |
1094 | struct pim_interface *pim_ifp; |
1095 | struct interface *ifp; | |
1096 | ||
7e2b7603 | 1097 | ifp = if_lookup_by_index (ifindex, VRF_DEFAULT); |
28185336 | 1098 | if (!ifp || !ifp->info) |
ae90dfbb | 1099 | return -1; |
28185336 | 1100 | pim_ifp = ifp->info; |
ae90dfbb DS |
1101 | |
1102 | return pim_ifp->mroute_vif_index; | |
12e41d03 DL |
1103 | } |
1104 | ||
1105 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
1106 | { | |
1107 | struct pim_interface *pim_ifp; | |
1108 | ||
1109 | pim_ifp = ifp->info; | |
1110 | zassert(pim_ifp); | |
1111 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
1112 | ||
1113 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; | |
1114 | } | |
1115 | ||
1116 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
1117 | { | |
1118 | if (pim_if_lan_delay_enabled(ifp)) { | |
1119 | struct pim_interface *pim_ifp; | |
1120 | pim_ifp = ifp->info; | |
1121 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
1122 | } | |
1123 | else { | |
1124 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
1129 | { | |
1130 | if (pim_if_lan_delay_enabled(ifp)) { | |
1131 | struct pim_interface *pim_ifp; | |
1132 | pim_ifp = ifp->info; | |
1133 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
1134 | } | |
1135 | else { | |
1136 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | int pim_if_t_override_msec(struct interface *ifp) | |
1141 | { | |
1142 | int effective_override_interval_msec; | |
1143 | int t_override_msec; | |
1144 | ||
1145 | effective_override_interval_msec = | |
1146 | pim_if_effective_override_interval_msec(ifp); | |
1147 | ||
60b40924 | 1148 | t_override_msec = random() % (effective_override_interval_msec + 1); |
12e41d03 DL |
1149 | |
1150 | return t_override_msec; | |
1151 | } | |
1152 | ||
1153 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
1154 | { | |
1155 | return pim_if_effective_propagation_delay_msec(ifp) + | |
1156 | pim_if_effective_override_interval_msec(ifp); | |
1157 | } | |
1158 | ||
1159 | /* | |
1160 | RFC 4601: 4.1.6. State Summarization Macros | |
1161 | ||
1162 | The function NBR( I, A ) uses information gathered through PIM Hello | |
1163 | messages to map the IP address A of a directly connected PIM | |
1164 | neighbor router on interface I to the primary IP address of the same | |
1165 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
1166 | address that it uses as the source of its PIM Hello messages. | |
1167 | */ | |
1168 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
1169 | struct in_addr addr) | |
1170 | { | |
1171 | struct listnode *neighnode; | |
1172 | struct pim_neighbor *neigh; | |
1173 | struct pim_interface *pim_ifp; | |
07b17d59 | 1174 | struct prefix p; |
12e41d03 DL |
1175 | |
1176 | zassert(ifp); | |
1177 | ||
1178 | pim_ifp = ifp->info; | |
1179 | if (!pim_ifp) { | |
1180 | zlog_warn("%s: multicast not enabled on interface %s", | |
1181 | __PRETTY_FUNCTION__, | |
1182 | ifp->name); | |
1183 | return 0; | |
1184 | } | |
1185 | ||
07b17d59 DS |
1186 | p.family = AF_INET; |
1187 | p.u.prefix4 = addr; | |
1188 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
1189 | ||
12e41d03 DL |
1190 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, neigh)) { |
1191 | ||
1192 | /* primary address ? */ | |
1193 | if (neigh->source_addr.s_addr == addr.s_addr) | |
1194 | return neigh; | |
1195 | ||
1196 | /* secondary address ? */ | |
07b17d59 | 1197 | if (pim_neighbor_find_secondary(neigh, &p)) |
12e41d03 DL |
1198 | return neigh; |
1199 | } | |
1200 | ||
1201 | if (PIM_DEBUG_PIM_TRACE) { | |
eaa54bdb | 1202 | char addr_str[INET_ADDRSTRLEN]; |
12e41d03 DL |
1203 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); |
1204 | zlog_debug("%s: neighbor not found for address %s on interface %s", | |
1205 | __PRETTY_FUNCTION__, | |
1206 | addr_str, ifp->name); | |
1207 | } | |
1208 | ||
ff67a923 | 1209 | return NULL; |
12e41d03 DL |
1210 | } |
1211 | ||
1212 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
1213 | { | |
1214 | struct pim_interface *pim_ifp; | |
1215 | long t_suppressed_msec; | |
60b40924 | 1216 | uint32_t ramount = 0; |
12e41d03 DL |
1217 | |
1218 | pim_ifp = ifp->info; | |
1219 | zassert(pim_ifp); | |
1220 | ||
1221 | /* join suppression disabled ? */ | |
1222 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
1223 | return 0; | |
1224 | ||
1225 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ | |
60b40924 DS |
1226 | ramount = 1100 + (random() % (1400 - 1100 + 1)); |
1227 | t_suppressed_msec = qpim_t_periodic * ramount; | |
12e41d03 DL |
1228 | |
1229 | return t_suppressed_msec; | |
1230 | } | |
1231 | ||
1232 | static void igmp_join_free(struct igmp_join *ij) | |
1233 | { | |
1234 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); | |
1235 | } | |
1236 | ||
1237 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
1238 | struct in_addr group_addr, | |
1239 | struct in_addr source_addr) | |
1240 | { | |
1241 | struct listnode *node; | |
1242 | struct igmp_join *ij; | |
1243 | ||
1244 | zassert(join_list); | |
1245 | ||
1246 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { | |
1247 | if ((group_addr.s_addr == ij->group_addr.s_addr) && | |
1248 | (source_addr.s_addr == ij->source_addr.s_addr)) | |
1249 | return ij; | |
1250 | } | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | static int igmp_join_sock(const char *ifname, | |
b892f1dd | 1256 | ifindex_t ifindex, |
12e41d03 DL |
1257 | struct in_addr group_addr, |
1258 | struct in_addr source_addr) | |
1259 | { | |
1260 | int join_fd; | |
1261 | ||
1262 | join_fd = pim_socket_raw(IPPROTO_IGMP); | |
1263 | if (join_fd < 0) { | |
1264 | return -1; | |
1265 | } | |
1266 | ||
1267 | if (pim_socket_join_source(join_fd, ifindex, group_addr, source_addr, ifname)) { | |
1268 | close(join_fd); | |
1269 | return -2; | |
1270 | } | |
1271 | ||
1272 | return join_fd; | |
1273 | } | |
1274 | ||
1275 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1276 | struct in_addr group_addr, | |
1277 | struct in_addr source_addr) | |
1278 | { | |
1279 | struct pim_interface *pim_ifp; | |
1280 | struct igmp_join *ij; | |
1281 | int join_fd; | |
1282 | ||
1283 | pim_ifp = ifp->info; | |
1284 | zassert(pim_ifp); | |
1285 | ||
1286 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, source_addr); | |
1287 | if (join_fd < 0) { | |
eaa54bdb DW |
1288 | char group_str[INET_ADDRSTRLEN]; |
1289 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1290 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1291 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1292 | zlog_warn("%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
1293 | __PRETTY_FUNCTION__, | |
1294 | group_str, source_str, ifp->name); | |
1295 | return 0; | |
1296 | } | |
1297 | ||
36d9e7dc | 1298 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); |
12e41d03 | 1299 | if (!ij) { |
eaa54bdb DW |
1300 | char group_str[INET_ADDRSTRLEN]; |
1301 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1302 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1303 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
36d9e7dc | 1304 | zlog_err("%s: XCALLOC(%zu) failure for IGMP group %s source %s on interface %s", |
12e41d03 DL |
1305 | __PRETTY_FUNCTION__, |
1306 | sizeof(*ij), group_str, source_str, ifp->name); | |
1307 | close(join_fd); | |
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | ij->sock_fd = join_fd; | |
1312 | ij->group_addr = group_addr; | |
1313 | ij->source_addr = source_addr; | |
1314 | ij->sock_creation = pim_time_monotonic_sec(); | |
1315 | ||
1316 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1317 | ||
1318 | return ij; | |
1319 | } | |
1320 | ||
1321 | int pim_if_igmp_join_add(struct interface *ifp, | |
1322 | struct in_addr group_addr, | |
1323 | struct in_addr source_addr) | |
1324 | { | |
1325 | struct pim_interface *pim_ifp; | |
1326 | struct igmp_join *ij; | |
1327 | ||
1328 | pim_ifp = ifp->info; | |
1329 | if (!pim_ifp) { | |
1330 | zlog_warn("%s: multicast not enabled on interface %s", | |
1331 | __PRETTY_FUNCTION__, | |
1332 | ifp->name); | |
1333 | return -1; | |
1334 | } | |
1335 | ||
1336 | if (!pim_ifp->igmp_join_list) { | |
1337 | pim_ifp->igmp_join_list = list_new(); | |
1338 | if (!pim_ifp->igmp_join_list) { | |
1339 | zlog_err("%s %s: failure: igmp_join_list=list_new()", | |
1340 | __FILE__, __PRETTY_FUNCTION__); | |
1341 | return -2; | |
1342 | } | |
1343 | pim_ifp->igmp_join_list->del = (void (*)(void *)) igmp_join_free; | |
1344 | } | |
1345 | ||
1346 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1347 | if (ij) { | |
eaa54bdb DW |
1348 | char group_str[INET_ADDRSTRLEN]; |
1349 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1350 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1351 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1352 | zlog_warn("%s: can't re-join existing IGMP group %s source %s on interface %s", | |
1353 | __PRETTY_FUNCTION__, | |
1354 | group_str, source_str, ifp->name); | |
1355 | return -3; | |
1356 | } | |
1357 | ||
1358 | ij = igmp_join_new(ifp, group_addr, source_addr); | |
1359 | if (!ij) { | |
eaa54bdb DW |
1360 | char group_str[INET_ADDRSTRLEN]; |
1361 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1362 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1363 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1364 | zlog_warn("%s: igmp_join_new() failure for IGMP group %s source %s on interface %s", | |
1365 | __PRETTY_FUNCTION__, | |
1366 | group_str, source_str, ifp->name); | |
1367 | return -4; | |
1368 | } | |
1369 | ||
7adf0260 | 1370 | if (PIM_DEBUG_IGMP_EVENTS) { |
eaa54bdb DW |
1371 | char group_str[INET_ADDRSTRLEN]; |
1372 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1373 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1374 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1375 | zlog_debug("%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
7adf0260 DS |
1376 | __PRETTY_FUNCTION__, |
1377 | source_str, group_str, ifp->name); | |
12e41d03 DL |
1378 | } |
1379 | ||
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | ||
1384 | ||
1385 | int pim_if_igmp_join_del(struct interface *ifp, | |
1386 | struct in_addr group_addr, | |
1387 | struct in_addr source_addr) | |
1388 | { | |
1389 | struct pim_interface *pim_ifp; | |
1390 | struct igmp_join *ij; | |
1391 | ||
1392 | pim_ifp = ifp->info; | |
1393 | if (!pim_ifp) { | |
1394 | zlog_warn("%s: multicast not enabled on interface %s", | |
1395 | __PRETTY_FUNCTION__, | |
1396 | ifp->name); | |
1397 | return -1; | |
1398 | } | |
1399 | ||
1400 | if (!pim_ifp->igmp_join_list) { | |
1401 | zlog_warn("%s: no IGMP join on interface %s", | |
1402 | __PRETTY_FUNCTION__, | |
1403 | ifp->name); | |
1404 | return -2; | |
1405 | } | |
1406 | ||
1407 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1408 | if (!ij) { | |
eaa54bdb DW |
1409 | char group_str[INET_ADDRSTRLEN]; |
1410 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1411 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1412 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1413 | zlog_warn("%s: could not find IGMP group %s source %s on interface %s", | |
1414 | __PRETTY_FUNCTION__, | |
1415 | group_str, source_str, ifp->name); | |
1416 | return -3; | |
1417 | } | |
1418 | ||
1419 | if (close(ij->sock_fd)) { | |
eaa54bdb DW |
1420 | char group_str[INET_ADDRSTRLEN]; |
1421 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1422 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1423 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1424 | zlog_warn("%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
1425 | __PRETTY_FUNCTION__, | |
3d7765d7 | 1426 | ij->sock_fd, group_str, source_str, ifp->name, errno, safe_strerror(errno)); |
12e41d03 DL |
1427 | /* warning only */ |
1428 | } | |
1429 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1430 | igmp_join_free(ij); | |
1431 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
1432 | list_delete(pim_ifp->igmp_join_list); | |
1433 | pim_ifp->igmp_join_list = 0; | |
1434 | } | |
1435 | ||
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1440 | { | |
1441 | struct pim_interface *pim_ifp; | |
1442 | struct listnode *node; | |
1443 | struct listnode *nextnode; | |
1444 | struct igmp_join *ij; | |
1445 | ||
1446 | pim_ifp = ifp->info; | |
1447 | if (!pim_ifp) { | |
1448 | zlog_warn("%s: multicast not enabled on interface %s", | |
1449 | __PRETTY_FUNCTION__, | |
1450 | ifp->name); | |
1451 | return; | |
1452 | } | |
1453 | ||
1454 | if (!pim_ifp->igmp_join_list) | |
1455 | return; | |
1456 | ||
1457 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1458 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
1459 | } | |
1460 | ||
1461 | /* | |
1462 | RFC 4601 | |
1463 | ||
1464 | Transitions from "I am Assert Loser" State | |
1465 | ||
1466 | Current Winner's GenID Changes or NLT Expires | |
1467 | ||
1468 | The Neighbor Liveness Timer associated with the current winner | |
1469 | expires or we receive a Hello message from the current winner | |
1470 | reporting a different GenID from the one it previously reported. | |
1471 | This indicates that the current winner's interface or router has | |
1472 | gone down (and may have come back up), and so we must assume it no | |
1473 | longer knows it was the winner. | |
1474 | */ | |
1475 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1476 | struct in_addr neigh_addr) | |
1477 | { | |
1478 | struct pim_interface *pim_ifp; | |
1479 | struct listnode *node; | |
1480 | struct listnode *next_node; | |
1481 | struct pim_ifchannel *ch; | |
1482 | ||
1483 | pim_ifp = ifp->info; | |
1484 | zassert(pim_ifp); | |
1485 | ||
1486 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
1487 | /* Is (S,G,I) assert loser ? */ | |
1488 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1489 | continue; | |
1490 | /* Dead neighbor was winner ? */ | |
1491 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1492 | continue; | |
1493 | ||
1494 | assert_action_a5(ch); | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1499 | { | |
1500 | struct listnode *ch_node; | |
1501 | struct pim_ifchannel *ch; | |
1502 | ||
1503 | /* clear off flag from interface's upstreams */ | |
1504 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1505 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED(ch->upstream->flags); | |
1506 | } | |
1507 | ||
1508 | /* scan per-interface (S,G,I) state on this I interface */ | |
1509 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1510 | struct pim_upstream *up = ch->upstream; | |
1511 | ||
1512 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) | |
1513 | continue; | |
1514 | ||
1515 | /* update join_desired for the global (S,G) state */ | |
1516 | pim_upstream_update_join_desired(up); | |
1517 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1522 | { | |
1523 | struct pim_interface *pim_ifp; | |
1524 | struct listnode *node; | |
1525 | struct listnode *next_node; | |
1526 | struct pim_ifchannel *ch; | |
1527 | ||
1528 | pim_ifp = ifp->info; | |
1529 | if (!pim_ifp) | |
1530 | return; | |
1531 | ||
1532 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
1533 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1534 | } | |
1535 | } | |
c992c9a0 DS |
1536 | |
1537 | /* | |
1538 | * PIM wants to have an interface pointer for everything it does. | |
1539 | * The pimreg is a special interface that we have that is not | |
1540 | * quite an inteface but a VIF is created for it. | |
1541 | */ | |
1542 | void pim_if_create_pimreg (void) | |
1543 | { | |
1544 | if (!pim_regiface) { | |
4e5266b8 | 1545 | pim_regiface = if_create("pimreg", strlen("pimreg"), VRF_DEFAULT); |
c992c9a0 DS |
1546 | pim_regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; |
1547 | ||
1548 | pim_if_new(pim_regiface, 0, 0); | |
1549 | } | |
1550 | } | |
3565202d DS |
1551 | |
1552 | int | |
1553 | pim_if_connected_to_source (struct interface *ifp, struct in_addr src) | |
1554 | { | |
1555 | struct listnode *cnode; | |
1556 | struct connected *c; | |
1557 | struct prefix p; | |
1558 | ||
dba88ccb CS |
1559 | if (!ifp) |
1560 | return 0; | |
1561 | ||
3565202d DS |
1562 | p.family = AF_INET; |
1563 | p.u.prefix4 = src; | |
1564 | p.prefixlen = IPV4_MAX_BITLEN; | |
1565 | ||
1566 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, c)) | |
1567 | { | |
1568 | if ((c->address->family == AF_INET) && | |
1569 | prefix_match (CONNECTED_PREFIX (c), &p)) | |
1570 | { | |
1571 | return 1; | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | return 0; | |
1576 | } | |
9f0edbc9 DS |
1577 | |
1578 | struct interface * | |
1579 | pim_if_lookup_address_vrf (struct in_addr src, vrf_id_t vrf_id) | |
1580 | { | |
1581 | struct listnode *ifnode; | |
1582 | struct interface *ifp; | |
1583 | ||
1584 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) | |
1585 | { | |
1586 | if (pim_if_connected_to_source (ifp, src) && ifp->info) | |
1587 | return ifp; | |
1588 | } | |
1589 | return NULL; | |
1590 | } |