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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" | |
c2cf4b02 | 32 | #include "pim_instance.h" |
cba44481 | 33 | #include "pim_zebra.h" |
12e41d03 DL |
34 | #include "pim_iface.h" |
35 | #include "pim_igmp.h" | |
36 | #include "pim_mroute.h" | |
37 | #include "pim_oil.h" | |
38 | #include "pim_str.h" | |
39 | #include "pim_pim.h" | |
40 | #include "pim_neighbor.h" | |
41 | #include "pim_ifchannel.h" | |
12e41d03 DL |
42 | #include "pim_sock.h" |
43 | #include "pim_time.h" | |
44 | #include "pim_ssmpingd.h" | |
7176984f | 45 | #include "pim_rp.h" |
cba44481 | 46 | #include "pim_nht.h" |
12e41d03 DL |
47 | |
48 | static void pim_if_igmp_join_del_all(struct interface *ifp); | |
dba88ccb | 49 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
d62a17ae | 50 | struct in_addr group_addr, |
51 | struct in_addr source_addr); | |
12e41d03 | 52 | |
f88df3a6 | 53 | void pim_if_init(struct pim_instance *pim) |
ea4a71fc | 54 | { |
d62a17ae | 55 | int i; |
dc0665f1 | 56 | |
d62a17ae | 57 | for (i = 0; i < MAXVIFS; i++) |
f88df3a6 | 58 | pim->iface_vif_index[i] = 0; |
dc0665f1 | 59 | |
f88df3a6 DS |
60 | pim->ifchannel_list = list_new(); |
61 | pim->ifchannel_list->cmp = | |
d62a17ae | 62 | (int (*)(void *, void *))pim_ifchannel_compare; |
ea4a71fc DS |
63 | } |
64 | ||
f88df3a6 | 65 | void pim_if_terminate(struct pim_instance *pim) |
ea4a71fc | 66 | { |
f88df3a6 DS |
67 | if (pim->ifchannel_list) |
68 | list_free(pim->ifchannel_list); | |
ea4a71fc DS |
69 | } |
70 | ||
71 | static void *if_list_clean(struct pim_interface *pim_ifp) | |
72 | { | |
d62a17ae | 73 | if (pim_ifp->igmp_join_list) { |
74 | list_delete(pim_ifp->igmp_join_list); | |
75 | } | |
ea4a71fc | 76 | |
d62a17ae | 77 | if (pim_ifp->igmp_socket_list) { |
78 | list_delete(pim_ifp->igmp_socket_list); | |
79 | } | |
ea4a71fc | 80 | |
d62a17ae | 81 | if (pim_ifp->pim_neighbor_list) { |
82 | list_delete(pim_ifp->pim_neighbor_list); | |
83 | } | |
ea4a71fc | 84 | |
d62a17ae | 85 | if (pim_ifp->upstream_switch_list) |
86 | list_delete(pim_ifp->upstream_switch_list); | |
982bff89 | 87 | |
d62a17ae | 88 | if (pim_ifp->pim_ifchannel_list) { |
89 | list_delete(pim_ifp->pim_ifchannel_list); | |
90 | } | |
ea4a71fc | 91 | |
d62a17ae | 92 | if (pim_ifp->pim_ifchannel_hash) |
93 | hash_free(pim_ifp->pim_ifchannel_hash); | |
a625e937 | 94 | |
d62a17ae | 95 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
ea4a71fc | 96 | |
d62a17ae | 97 | return 0; |
ea4a71fc DS |
98 | } |
99 | ||
12e41d03 DL |
100 | struct pim_interface *pim_if_new(struct interface *ifp, int igmp, int pim) |
101 | { | |
d62a17ae | 102 | struct pim_interface *pim_ifp; |
103 | ||
104 | zassert(ifp); | |
105 | zassert(!ifp->info); | |
106 | ||
107 | pim_ifp = XCALLOC(MTYPE_PIM_INTERFACE, sizeof(*pim_ifp)); | |
108 | if (!pim_ifp) { | |
109 | zlog_err("PIM XCALLOC(%zu) failure", sizeof(*pim_ifp)); | |
110 | return 0; | |
111 | } | |
112 | ||
113 | pim_ifp->options = 0; | |
18d8291f | 114 | pim_ifp->pim = pim_get_pim_instance(ifp->vrf_id); |
d62a17ae | 115 | pim_ifp->mroute_vif_index = -1; |
116 | ||
117 | pim_ifp->igmp_version = IGMP_DEFAULT_VERSION; | |
118 | pim_ifp->igmp_default_robustness_variable = | |
119 | IGMP_DEFAULT_ROBUSTNESS_VARIABLE; | |
120 | pim_ifp->igmp_default_query_interval = IGMP_GENERAL_QUERY_INTERVAL; | |
121 | pim_ifp->igmp_query_max_response_time_dsec = | |
122 | IGMP_QUERY_MAX_RESPONSE_TIME_DSEC; | |
123 | pim_ifp->igmp_specific_query_max_response_time_dsec = | |
124 | IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC; | |
125 | ||
126 | /* | |
127 | RFC 3376: 8.3. Query Response Interval | |
128 | The number of seconds represented by the [Query Response Interval] | |
129 | must be less than the [Query Interval]. | |
130 | */ | |
131 | zassert(pim_ifp->igmp_query_max_response_time_dsec | |
132 | < pim_ifp->igmp_default_query_interval); | |
133 | ||
134 | if (pim) | |
135 | PIM_IF_DO_PIM(pim_ifp->options); | |
136 | if (igmp) | |
137 | PIM_IF_DO_IGMP(pim_ifp->options); | |
138 | ||
139 | PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(pim_ifp->options); | |
140 | ||
141 | pim_ifp->igmp_join_list = NULL; | |
142 | pim_ifp->igmp_socket_list = NULL; | |
143 | pim_ifp->pim_neighbor_list = NULL; | |
144 | pim_ifp->upstream_switch_list = NULL; | |
145 | pim_ifp->pim_ifchannel_list = NULL; | |
146 | pim_ifp->pim_ifchannel_hash = NULL; | |
147 | pim_ifp->pim_generation_id = 0; | |
148 | ||
149 | /* list of struct igmp_sock */ | |
150 | pim_ifp->igmp_socket_list = list_new(); | |
151 | if (!pim_ifp->igmp_socket_list) { | |
152 | zlog_err("%s %s: failure: igmp_socket_list=list_new()", | |
153 | __FILE__, __PRETTY_FUNCTION__); | |
154 | return if_list_clean(pim_ifp); | |
155 | } | |
156 | pim_ifp->igmp_socket_list->del = (void (*)(void *))igmp_sock_free; | |
157 | ||
158 | /* list of struct pim_neighbor */ | |
159 | pim_ifp->pim_neighbor_list = list_new(); | |
160 | if (!pim_ifp->pim_neighbor_list) { | |
161 | zlog_err("%s %s: failure: pim_neighbor_list=list_new()", | |
162 | __FILE__, __PRETTY_FUNCTION__); | |
163 | return if_list_clean(pim_ifp); | |
164 | } | |
165 | pim_ifp->pim_neighbor_list->del = (void (*)(void *))pim_neighbor_free; | |
166 | ||
167 | pim_ifp->upstream_switch_list = list_new(); | |
168 | if (!pim_ifp->upstream_switch_list) { | |
169 | zlog_err("%s %s: failure: upstream_switch_list=list_new()", | |
170 | __FILE__, __PRETTY_FUNCTION__); | |
171 | return if_list_clean(pim_ifp); | |
172 | } | |
173 | ||
174 | /* list of struct pim_ifchannel */ | |
175 | pim_ifp->pim_ifchannel_list = list_new(); | |
176 | if (!pim_ifp->pim_ifchannel_list) { | |
177 | zlog_err("%s %s: failure: pim_ifchannel_list=list_new()", | |
178 | __FILE__, __PRETTY_FUNCTION__); | |
179 | return if_list_clean(pim_ifp); | |
180 | } | |
181 | pim_ifp->pim_ifchannel_list->del = (void (*)(void *))pim_ifchannel_free; | |
182 | pim_ifp->pim_ifchannel_list->cmp = | |
183 | (int (*)(void *, void *))pim_ifchannel_compare; | |
184 | ||
185 | pim_ifp->pim_ifchannel_hash = | |
186 | hash_create(pim_ifchannel_hash_key, pim_ifchannel_equal, NULL); | |
187 | ||
188 | ifp->info = pim_ifp; | |
189 | ||
190 | pim_sock_reset(ifp); | |
191 | ||
192 | pim_if_add_vif(ifp); | |
193 | ||
194 | return pim_ifp; | |
12e41d03 DL |
195 | } |
196 | ||
197 | void pim_if_delete(struct interface *ifp) | |
198 | { | |
d62a17ae | 199 | struct pim_interface *pim_ifp; |
12e41d03 | 200 | |
d62a17ae | 201 | zassert(ifp); |
202 | pim_ifp = ifp->info; | |
203 | zassert(pim_ifp); | |
12e41d03 | 204 | |
d62a17ae | 205 | if (pim_ifp->igmp_join_list) { |
206 | pim_if_igmp_join_del_all(ifp); | |
207 | } | |
12e41d03 | 208 | |
d62a17ae | 209 | pim_ifchannel_delete_all(ifp); |
210 | igmp_sock_delete_all(ifp); | |
12e41d03 | 211 | |
d62a17ae | 212 | pim_neighbor_delete_all(ifp, "Interface removed from configuration"); |
12e41d03 | 213 | |
d62a17ae | 214 | pim_if_del_vif(ifp); |
12e41d03 | 215 | |
d62a17ae | 216 | list_delete(pim_ifp->igmp_socket_list); |
217 | list_delete(pim_ifp->pim_neighbor_list); | |
218 | list_delete(pim_ifp->upstream_switch_list); | |
219 | list_delete(pim_ifp->pim_ifchannel_list); | |
12e41d03 | 220 | |
d62a17ae | 221 | hash_free(pim_ifp->pim_ifchannel_hash); |
a625e937 | 222 | |
d62a17ae | 223 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
12e41d03 | 224 | |
d62a17ae | 225 | ifp->info = NULL; |
12e41d03 DL |
226 | } |
227 | ||
228 | void pim_if_update_could_assert(struct interface *ifp) | |
229 | { | |
d62a17ae | 230 | struct pim_interface *pim_ifp; |
231 | struct listnode *node; | |
232 | struct listnode *next_node; | |
233 | struct pim_ifchannel *ch; | |
12e41d03 | 234 | |
d62a17ae | 235 | pim_ifp = ifp->info; |
236 | zassert(pim_ifp); | |
12e41d03 | 237 | |
d62a17ae | 238 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, |
239 | ch)) { | |
240 | pim_ifchannel_update_could_assert(ch); | |
241 | } | |
12e41d03 DL |
242 | } |
243 | ||
244 | static void pim_if_update_my_assert_metric(struct interface *ifp) | |
245 | { | |
d62a17ae | 246 | struct pim_interface *pim_ifp; |
247 | struct listnode *node; | |
248 | struct listnode *next_node; | |
249 | struct pim_ifchannel *ch; | |
12e41d03 | 250 | |
d62a17ae | 251 | pim_ifp = ifp->info; |
252 | zassert(pim_ifp); | |
12e41d03 | 253 | |
d62a17ae | 254 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, |
255 | ch)) { | |
256 | pim_ifchannel_update_my_assert_metric(ch); | |
257 | } | |
12e41d03 DL |
258 | } |
259 | ||
260 | static void pim_addr_change(struct interface *ifp) | |
261 | { | |
d62a17ae | 262 | struct pim_interface *pim_ifp; |
263 | ||
264 | pim_ifp = ifp->info; | |
265 | zassert(pim_ifp); | |
266 | ||
267 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- | |
268 | Done TODO T30 */ | |
269 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
270 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
271 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
272 | pim_if_update_assert_tracking_desired( | |
273 | ifp); /* depends on DR, join_desired */ | |
274 | ||
275 | /* | |
276 | RFC 4601: 4.3.1. Sending Hello Messages | |
277 | ||
278 | 1) Before an interface goes down or changes primary IP address, a | |
279 | Hello message with a zero HoldTime should be sent immediately | |
280 | (with the old IP address if the IP address changed). | |
281 | -- FIXME See CAVEAT C13 | |
282 | ||
283 | 2) After an interface has changed its IP address, it MUST send a | |
284 | Hello message with its new IP address. | |
285 | -- DONE below | |
286 | ||
287 | 3) If an interface changes one of its secondary IP addresses, a | |
288 | Hello message with an updated Address_List option and a non-zero | |
289 | HoldTime should be sent immediately. | |
290 | -- FIXME See TODO T31 | |
291 | */ | |
292 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
293 | if (pim_ifp->pim_sock_fd < 0) | |
294 | return; | |
295 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
12e41d03 DL |
296 | } |
297 | ||
12e41d03 DL |
298 | static int detect_primary_address_change(struct interface *ifp, |
299 | int force_prim_as_any, | |
300 | const char *caller) | |
301 | { | |
d62a17ae | 302 | struct pim_interface *pim_ifp = ifp->info; |
303 | struct in_addr new_prim_addr; | |
304 | int changed; | |
305 | ||
306 | if (force_prim_as_any) | |
307 | new_prim_addr.s_addr = INADDR_ANY; | |
308 | else | |
309 | new_prim_addr = pim_find_primary_addr(ifp); | |
310 | ||
311 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
312 | ||
313 | if (PIM_DEBUG_ZEBRA) { | |
314 | char new_prim_str[INET_ADDRSTRLEN]; | |
315 | char old_prim_str[INET_ADDRSTRLEN]; | |
316 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, | |
317 | sizeof(new_prim_str)); | |
318 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, | |
319 | sizeof(old_prim_str)); | |
320 | zlog_debug("%s: old=%s new=%s on interface %s: %s", | |
321 | __PRETTY_FUNCTION__, old_prim_str, new_prim_str, | |
322 | ifp->name, changed ? "changed" : "unchanged"); | |
323 | } | |
324 | ||
325 | if (changed) { | |
326 | pim_ifp->primary_address = new_prim_addr; | |
327 | } | |
328 | ||
329 | return changed; | |
12e41d03 DL |
330 | } |
331 | ||
7176984f | 332 | static int pim_sec_addr_comp(const void *p1, const void *p2) |
333 | { | |
d62a17ae | 334 | const struct pim_secondary_addr *sec1 = p1; |
335 | const struct pim_secondary_addr *sec2 = p2; | |
336 | ||
337 | if (sec1->addr.family == AF_INET && sec2->addr.family == AF_INET6) | |
338 | return -1; | |
339 | ||
340 | if (sec1->addr.family == AF_INET6 && sec2->addr.family == AF_INET) | |
341 | return 1; | |
342 | ||
343 | if (sec1->addr.family == AF_INET) { | |
344 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
345 | < ntohl(sec2->addr.u.prefix4.s_addr)) | |
346 | return -1; | |
347 | ||
348 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
349 | > ntohl(sec2->addr.u.prefix4.s_addr)) | |
350 | return 1; | |
351 | } else { | |
352 | return memcmp(&sec1->addr.u.prefix6, &sec2->addr.u.prefix6, | |
353 | sizeof(struct in6_addr)); | |
354 | } | |
355 | ||
356 | return 0; | |
7176984f | 357 | } |
358 | ||
359 | static void pim_sec_addr_free(struct pim_secondary_addr *sec_addr) | |
360 | { | |
d62a17ae | 361 | XFREE(MTYPE_PIM_SEC_ADDR, sec_addr); |
7176984f | 362 | } |
363 | ||
364 | static struct pim_secondary_addr * | |
294b6d72 | 365 | pim_sec_addr_find(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 366 | { |
d62a17ae | 367 | struct pim_secondary_addr *sec_addr; |
368 | struct listnode *node; | |
7176984f | 369 | |
d62a17ae | 370 | if (!pim_ifp->sec_addr_list) { |
371 | return NULL; | |
372 | } | |
7176984f | 373 | |
d62a17ae | 374 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
375 | if (prefix_cmp(&sec_addr->addr, addr)) { | |
376 | return sec_addr; | |
377 | } | |
378 | } | |
7176984f | 379 | |
d62a17ae | 380 | return NULL; |
7176984f | 381 | } |
382 | ||
383 | static void pim_sec_addr_del(struct pim_interface *pim_ifp, | |
d62a17ae | 384 | struct pim_secondary_addr *sec_addr) |
7176984f | 385 | { |
d62a17ae | 386 | listnode_delete(pim_ifp->sec_addr_list, sec_addr); |
387 | pim_sec_addr_free(sec_addr); | |
7176984f | 388 | } |
389 | ||
294b6d72 | 390 | static int pim_sec_addr_add(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 391 | { |
d62a17ae | 392 | int changed = 0; |
393 | struct pim_secondary_addr *sec_addr; | |
394 | ||
395 | sec_addr = pim_sec_addr_find(pim_ifp, addr); | |
396 | if (sec_addr) { | |
397 | sec_addr->flags &= ~PIM_SEC_ADDRF_STALE; | |
398 | return changed; | |
399 | } | |
400 | ||
401 | if (!pim_ifp->sec_addr_list) { | |
402 | pim_ifp->sec_addr_list = list_new(); | |
403 | pim_ifp->sec_addr_list->del = | |
404 | (void (*)(void *))pim_sec_addr_free; | |
405 | pim_ifp->sec_addr_list->cmp = | |
406 | (int (*)(void *, void *))pim_sec_addr_comp; | |
407 | } | |
408 | ||
409 | sec_addr = XCALLOC(MTYPE_PIM_SEC_ADDR, sizeof(*sec_addr)); | |
410 | if (!sec_addr) { | |
411 | if (list_isempty(pim_ifp->sec_addr_list)) { | |
412 | list_free(pim_ifp->sec_addr_list); | |
413 | pim_ifp->sec_addr_list = NULL; | |
414 | } | |
415 | return changed; | |
416 | } | |
417 | ||
418 | changed = 1; | |
419 | sec_addr->addr = *addr; | |
420 | listnode_add_sort(pim_ifp->sec_addr_list, sec_addr); | |
421 | ||
422 | return changed; | |
7176984f | 423 | } |
424 | ||
425 | static int pim_sec_addr_del_all(struct pim_interface *pim_ifp) | |
426 | { | |
d62a17ae | 427 | int changed = 0; |
428 | ||
429 | if (!pim_ifp->sec_addr_list) { | |
430 | return changed; | |
431 | } | |
432 | if (!list_isempty(pim_ifp->sec_addr_list)) { | |
433 | changed = 1; | |
434 | /* remove all nodes and free up the list itself */ | |
435 | list_delete_all_node(pim_ifp->sec_addr_list); | |
436 | list_free(pim_ifp->sec_addr_list); | |
437 | pim_ifp->sec_addr_list = NULL; | |
438 | } | |
439 | ||
440 | return changed; | |
7176984f | 441 | } |
442 | ||
443 | static int pim_sec_addr_update(struct interface *ifp) | |
444 | { | |
d62a17ae | 445 | struct pim_interface *pim_ifp = ifp->info; |
446 | struct connected *ifc; | |
447 | struct listnode *node; | |
448 | struct listnode *nextnode; | |
449 | struct pim_secondary_addr *sec_addr; | |
450 | int changed = 0; | |
451 | ||
452 | if (pim_ifp->sec_addr_list) { | |
453 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, | |
454 | sec_addr)) { | |
455 | sec_addr->flags |= PIM_SEC_ADDRF_STALE; | |
456 | } | |
457 | } | |
458 | ||
459 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
460 | struct prefix *p = ifc->address; | |
461 | ||
462 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
463 | continue; | |
464 | } | |
465 | ||
466 | if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) { | |
467 | /* don't add the primary address into the secondary | |
468 | * address list */ | |
469 | continue; | |
470 | } | |
471 | ||
472 | if (pim_sec_addr_add(pim_ifp, p)) { | |
473 | changed = 1; | |
474 | } | |
475 | } | |
476 | ||
477 | if (pim_ifp->sec_addr_list) { | |
478 | /* Drop stale entries */ | |
479 | for (ALL_LIST_ELEMENTS(pim_ifp->sec_addr_list, node, nextnode, | |
480 | sec_addr)) { | |
481 | if (sec_addr->flags & PIM_SEC_ADDRF_STALE) { | |
482 | pim_sec_addr_del(pim_ifp, sec_addr); | |
483 | changed = 1; | |
484 | } | |
485 | } | |
486 | ||
487 | /* If the list went empty free it up */ | |
488 | if (list_isempty(pim_ifp->sec_addr_list)) { | |
489 | list_free(pim_ifp->sec_addr_list); | |
490 | pim_ifp->sec_addr_list = NULL; | |
491 | } | |
492 | } | |
493 | ||
494 | return changed; | |
7176984f | 495 | } |
496 | ||
4763cd0e | 497 | static int detect_secondary_address_change(struct interface *ifp, |
d62a17ae | 498 | int force_prim_as_any, |
499 | const char *caller) | |
12e41d03 | 500 | { |
d62a17ae | 501 | struct pim_interface *pim_ifp = ifp->info; |
502 | int changed = 0; | |
503 | ||
504 | if (force_prim_as_any) { | |
505 | /* if primary address is being forced to zero just flush the | |
506 | * secondary address list */ | |
507 | changed = pim_sec_addr_del_all(pim_ifp); | |
508 | } else { | |
509 | /* re-evaluate the secondary address list */ | |
510 | changed = pim_sec_addr_update(ifp); | |
511 | } | |
512 | ||
513 | return changed; | |
4763cd0e | 514 | } |
515 | ||
d62a17ae | 516 | static void detect_address_change(struct interface *ifp, int force_prim_as_any, |
517 | const char *caller) | |
4763cd0e | 518 | { |
d62a17ae | 519 | int changed = 0; |
520 | struct pim_interface *pim_ifp; | |
12e41d03 | 521 | |
d62a17ae | 522 | pim_ifp = ifp->info; |
523 | if (!pim_ifp) | |
524 | return; | |
4763cd0e | 525 | |
d62a17ae | 526 | if (detect_primary_address_change(ifp, force_prim_as_any, caller)) { |
527 | changed = 1; | |
528 | } | |
12e41d03 | 529 | |
d62a17ae | 530 | if (detect_secondary_address_change(ifp, force_prim_as_any, caller)) { |
531 | changed = 1; | |
532 | } | |
4763cd0e | 533 | |
534 | ||
d62a17ae | 535 | if (changed) { |
536 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
537 | return; | |
538 | } | |
4763cd0e | 539 | |
d62a17ae | 540 | pim_addr_change(ifp); |
541 | } | |
12e41d03 | 542 | |
d62a17ae | 543 | /* XXX: if we have unnumbered interfaces we need to run detect address |
544 | * address change on all of them when the lo address changes */ | |
12e41d03 DL |
545 | } |
546 | ||
4763cd0e | 547 | int pim_update_source_set(struct interface *ifp, struct in_addr source) |
12e41d03 | 548 | { |
d62a17ae | 549 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 550 | |
d62a17ae | 551 | if (!pim_ifp) { |
552 | return PIM_IFACE_NOT_FOUND; | |
553 | } | |
12e41d03 | 554 | |
d62a17ae | 555 | if (pim_ifp->update_source.s_addr == source.s_addr) { |
556 | return PIM_UPDATE_SOURCE_DUP; | |
557 | } | |
4763cd0e | 558 | |
d62a17ae | 559 | pim_ifp->update_source = source; |
560 | detect_address_change(ifp, 0 /* force_prim_as_any */, | |
561 | __PRETTY_FUNCTION__); | |
4763cd0e | 562 | |
d62a17ae | 563 | return PIM_SUCCESS; |
12e41d03 DL |
564 | } |
565 | ||
566 | void pim_if_addr_add(struct connected *ifc) | |
567 | { | |
d62a17ae | 568 | struct pim_interface *pim_ifp; |
569 | struct interface *ifp; | |
570 | struct in_addr ifaddr; | |
571 | ||
572 | zassert(ifc); | |
573 | ||
574 | ifp = ifc->ifp; | |
575 | zassert(ifp); | |
576 | pim_ifp = ifp->info; | |
577 | if (!pim_ifp) | |
578 | return; | |
579 | ||
580 | if (!if_is_operative(ifp)) | |
581 | return; | |
582 | ||
583 | if (PIM_DEBUG_ZEBRA) { | |
584 | char buf[BUFSIZ]; | |
585 | prefix2str(ifc->address, buf, BUFSIZ); | |
586 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
587 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
588 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
589 | ? "secondary" | |
590 | : "primary"); | |
591 | } | |
592 | ||
593 | ifaddr = ifc->address->u.prefix4; | |
594 | ||
595 | detect_address_change(ifp, 0, __PRETTY_FUNCTION__); | |
596 | ||
597 | if (ifc->address->family != AF_INET) | |
598 | return; | |
599 | ||
600 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { | |
601 | struct igmp_sock *igmp; | |
602 | ||
603 | /* lookup IGMP socket */ | |
604 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
605 | ifaddr); | |
606 | if (!igmp) { | |
607 | /* if addr new, add IGMP socket */ | |
608 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, | |
609 | ifp); | |
610 | } | |
611 | ||
612 | /* Replay Static IGMP groups */ | |
613 | if (pim_ifp->igmp_join_list) { | |
614 | struct listnode *node; | |
615 | struct listnode *nextnode; | |
616 | struct igmp_join *ij; | |
617 | int join_fd; | |
618 | ||
619 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, | |
620 | nextnode, ij)) { | |
621 | /* Close socket and reopen with Source and Group | |
622 | */ | |
623 | close(ij->sock_fd); | |
624 | join_fd = igmp_join_sock( | |
625 | ifp->name, ifp->ifindex, ij->group_addr, | |
626 | ij->source_addr); | |
627 | if (join_fd < 0) { | |
628 | char group_str[INET_ADDRSTRLEN]; | |
629 | char source_str[INET_ADDRSTRLEN]; | |
630 | pim_inet4_dump("<grp?>", ij->group_addr, | |
631 | group_str, | |
632 | sizeof(group_str)); | |
633 | pim_inet4_dump( | |
634 | "<src?>", ij->source_addr, | |
635 | source_str, sizeof(source_str)); | |
636 | zlog_warn( | |
637 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
638 | __PRETTY_FUNCTION__, group_str, | |
639 | source_str, ifp->name); | |
640 | /* warning only */ | |
641 | } else | |
642 | ij->sock_fd = join_fd; | |
643 | } | |
644 | } | |
645 | } /* igmp */ | |
646 | ||
647 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
648 | ||
649 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
650 | ||
651 | /* Interface has a valid socket ? */ | |
652 | if (pim_ifp->pim_sock_fd < 0) { | |
653 | if (pim_sock_add(ifp)) { | |
654 | zlog_warn( | |
655 | "Failure creating PIM socket for interface %s", | |
656 | ifp->name); | |
657 | } | |
658 | } | |
659 | struct pim_nexthop_cache *pnc = NULL; | |
660 | struct pim_rpf rpf; | |
661 | struct zclient *zclient = NULL; | |
662 | ||
663 | zclient = pim_zebra_zclient_get(); | |
664 | /* RP config might come prior to (local RP's interface) | |
665 | IF UP event. | |
666 | In this case, pnc would not have pim enabled | |
667 | nexthops. | |
668 | Once Interface is UP and pim info is available, | |
669 | reregister | |
670 | with RNH address to receive update and add the | |
671 | interface as nexthop. */ | |
672 | memset(&rpf, 0, sizeof(struct pim_rpf)); | |
673 | rpf.rpf_addr.family = AF_INET; | |
674 | rpf.rpf_addr.prefixlen = IPV4_MAX_BITLEN; | |
675 | rpf.rpf_addr.u.prefix4 = ifc->address->u.prefix4; | |
d0a4f55d | 676 | pnc = pim_nexthop_cache_find(pim_ifp->pim, &rpf); |
d62a17ae | 677 | if (pnc) |
cf663ceb DS |
678 | pim_sendmsg_zebra_rnh(zclient, pim_ifp->pim, |
679 | pnc, | |
d62a17ae | 680 | ZEBRA_NEXTHOP_REGISTER); |
681 | } | |
682 | } /* pim */ | |
683 | ||
684 | /* | |
685 | PIM or IGMP is enabled on interface, and there is at least one | |
686 | address assigned, then try to create a vif_index. | |
687 | */ | |
688 | if (pim_ifp->mroute_vif_index < 0) { | |
689 | pim_if_add_vif(ifp); | |
690 | } | |
691 | pim_ifchannel_scan_forward_start(ifp); | |
12e41d03 DL |
692 | } |
693 | ||
694 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
695 | { | |
d62a17ae | 696 | struct pim_interface *pim_ifp = ifc->ifp->info; |
697 | struct igmp_sock *igmp; | |
698 | struct in_addr ifaddr; | |
699 | ||
700 | if (ifc->address->family != AF_INET) { | |
701 | /* non-IPv4 address */ | |
702 | return; | |
703 | } | |
704 | ||
705 | if (!pim_ifp) { | |
706 | /* IGMP not enabled on interface */ | |
707 | return; | |
708 | } | |
709 | ||
710 | ifaddr = ifc->address->u.prefix4; | |
711 | ||
712 | /* lookup IGMP socket */ | |
713 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, ifaddr); | |
714 | if (igmp) { | |
715 | /* if addr found, del IGMP socket */ | |
716 | igmp_sock_delete(igmp); | |
717 | } | |
12e41d03 DL |
718 | } |
719 | ||
720 | static void pim_if_addr_del_pim(struct connected *ifc) | |
721 | { | |
d62a17ae | 722 | struct pim_interface *pim_ifp = ifc->ifp->info; |
12e41d03 | 723 | |
d62a17ae | 724 | if (ifc->address->family != AF_INET) { |
725 | /* non-IPv4 address */ | |
726 | return; | |
727 | } | |
12e41d03 | 728 | |
d62a17ae | 729 | if (!pim_ifp) { |
730 | /* PIM not enabled on interface */ | |
731 | return; | |
732 | } | |
733 | ||
734 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
735 | /* Interface keeps a valid primary address */ | |
736 | return; | |
737 | } | |
12e41d03 | 738 | |
d62a17ae | 739 | if (pim_ifp->pim_sock_fd < 0) { |
740 | /* Interface does not hold a valid socket any longer */ | |
741 | return; | |
742 | } | |
294b6d72 | 743 | |
d62a17ae | 744 | /* |
745 | pim_sock_delete() closes the socket, stops read and timer threads, | |
746 | and kills all neighbors. | |
747 | */ | |
748 | pim_sock_delete(ifc->ifp, | |
749 | "last address has been removed from interface"); | |
750 | } | |
12e41d03 | 751 | |
d62a17ae | 752 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) |
753 | { | |
754 | struct interface *ifp; | |
755 | ||
756 | zassert(ifc); | |
757 | ifp = ifc->ifp; | |
758 | zassert(ifp); | |
759 | ||
760 | if (ifc->address->family != AF_INET) | |
761 | return; | |
762 | ||
763 | if (PIM_DEBUG_ZEBRA) { | |
764 | char buf[BUFSIZ]; | |
765 | prefix2str(ifc->address, buf, BUFSIZ); | |
766 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
767 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
768 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
769 | ? "secondary" | |
770 | : "primary"); | |
771 | } | |
12e41d03 | 772 | |
d62a17ae | 773 | detect_address_change(ifp, force_prim_as_any, __PRETTY_FUNCTION__); |
774 | ||
775 | pim_if_addr_del_igmp(ifc); | |
776 | pim_if_addr_del_pim(ifc); | |
12e41d03 DL |
777 | } |
778 | ||
779 | void pim_if_addr_add_all(struct interface *ifp) | |
780 | { | |
d62a17ae | 781 | struct connected *ifc; |
782 | struct listnode *node; | |
783 | struct listnode *nextnode; | |
784 | int v4_addrs = 0; | |
785 | int v6_addrs = 0; | |
786 | struct pim_interface *pim_ifp = ifp->info; | |
787 | ||
788 | ||
789 | /* PIM/IGMP enabled ? */ | |
790 | if (!pim_ifp) | |
791 | return; | |
792 | ||
793 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
794 | struct prefix *p = ifc->address; | |
795 | ||
796 | if (p->family != AF_INET) | |
797 | v6_addrs++; | |
798 | else | |
799 | v4_addrs++; | |
800 | pim_if_addr_add(ifc); | |
801 | } | |
d8424057 | 802 | |
d62a17ae | 803 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { |
804 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
805 | ||
806 | /* Interface has a valid primary address ? */ | |
807 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
808 | ||
809 | /* Interface has a valid socket ? */ | |
810 | if (pim_ifp->pim_sock_fd < 0) { | |
811 | if (pim_sock_add(ifp)) { | |
812 | zlog_warn( | |
813 | "Failure creating PIM socket for interface %s", | |
814 | ifp->name); | |
815 | } | |
816 | } | |
817 | } | |
818 | } /* pim */ | |
819 | } | |
820 | /* | |
821 | * PIM or IGMP is enabled on interface, and there is at least one | |
822 | * address assigned, then try to create a vif_index. | |
823 | */ | |
824 | if (pim_ifp->mroute_vif_index < 0) { | |
825 | pim_if_add_vif(ifp); | |
826 | } | |
827 | pim_ifchannel_scan_forward_start(ifp); | |
828 | ||
fec883d9 | 829 | pim_rp_setup(pim_ifp->pim); |
d62a17ae | 830 | pim_rp_check_on_if_add(pim_ifp); |
12e41d03 DL |
831 | } |
832 | ||
833 | void pim_if_addr_del_all(struct interface *ifp) | |
834 | { | |
d62a17ae | 835 | struct connected *ifc; |
836 | struct listnode *node; | |
837 | struct listnode *nextnode; | |
5ec5d976 DS |
838 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
839 | struct pim_instance *pim = vrf->info; | |
d62a17ae | 840 | |
841 | /* PIM/IGMP enabled ? */ | |
842 | if (!ifp->info) | |
843 | return; | |
12e41d03 | 844 | |
d62a17ae | 845 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { |
846 | struct prefix *p = ifc->address; | |
12e41d03 | 847 | |
d62a17ae | 848 | if (p->family != AF_INET) |
849 | continue; | |
12e41d03 | 850 | |
d62a17ae | 851 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); |
852 | } | |
da3dcffb | 853 | |
5ec5d976 DS |
854 | pim_rp_setup(pim); |
855 | pim_i_am_rp_re_evaluate(pim); | |
12e41d03 DL |
856 | } |
857 | ||
858 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
859 | { | |
d62a17ae | 860 | struct connected *ifc; |
861 | struct listnode *node; | |
862 | struct listnode *nextnode; | |
863 | ||
864 | /* PIM/IGMP enabled ? */ | |
865 | if (!ifp->info) | |
866 | return; | |
867 | ||
868 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
869 | struct prefix *p = ifc->address; | |
870 | ||
871 | if (p->family != AF_INET) | |
872 | continue; | |
873 | ||
874 | pim_if_addr_del_igmp(ifc); | |
875 | } | |
12e41d03 DL |
876 | } |
877 | ||
878 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
879 | { | |
d62a17ae | 880 | struct connected *ifc; |
881 | struct listnode *node; | |
882 | struct listnode *nextnode; | |
883 | ||
884 | /* PIM/IGMP enabled ? */ | |
885 | if (!ifp->info) | |
886 | return; | |
887 | ||
888 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
889 | struct prefix *p = ifc->address; | |
890 | ||
891 | if (p->family != AF_INET) | |
892 | continue; | |
893 | ||
894 | pim_if_addr_del_pim(ifc); | |
895 | } | |
12e41d03 DL |
896 | } |
897 | ||
d62a17ae | 898 | struct in_addr pim_find_primary_addr(struct interface *ifp) |
12e41d03 | 899 | { |
d62a17ae | 900 | struct connected *ifc; |
901 | struct listnode *node; | |
902 | struct in_addr addr; | |
903 | int v4_addrs = 0; | |
904 | int v6_addrs = 0; | |
905 | struct pim_interface *pim_ifp = ifp->info; | |
906 | ||
907 | if (pim_ifp && PIM_INADDR_ISNOT_ANY(pim_ifp->update_source)) { | |
908 | return pim_ifp->update_source; | |
909 | } | |
910 | ||
911 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
912 | struct prefix *p = ifc->address; | |
913 | ||
914 | if (p->family != AF_INET) { | |
915 | v6_addrs++; | |
916 | continue; | |
917 | } | |
918 | ||
919 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
920 | zlog_warn( | |
921 | "%s: null IPv4 address connected to interface %s", | |
922 | __PRETTY_FUNCTION__, ifp->name); | |
923 | continue; | |
924 | } | |
925 | ||
926 | v4_addrs++; | |
927 | ||
928 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) | |
929 | continue; | |
930 | ||
931 | return p->u.prefix4; | |
932 | } | |
933 | ||
934 | /* | |
935 | * If we have no v4_addrs and v6 is configured | |
936 | * We probably are using unnumbered | |
937 | * So let's grab the loopbacks v4 address | |
938 | * and use that as the primary address | |
939 | */ | |
940 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { | |
941 | struct interface *lo_ifp; | |
fec883d9 | 942 | // DBS - Come back and check here |
0708beb1 | 943 | lo_ifp = if_lookup_by_name("lo", pimg->vrf_id); |
d62a17ae | 944 | if (lo_ifp) |
945 | return pim_find_primary_addr(lo_ifp); | |
946 | } | |
947 | ||
948 | addr.s_addr = PIM_NET_INADDR_ANY; | |
949 | ||
950 | return addr; | |
12e41d03 DL |
951 | } |
952 | ||
d62a17ae | 953 | static int pim_iface_next_vif_index(struct interface *ifp) |
744d91b3 | 954 | { |
f88df3a6 DS |
955 | struct pim_interface *pim_ifp = ifp->info; |
956 | struct pim_instance *pim = pim_ifp->pim; | |
d62a17ae | 957 | int i; |
f88df3a6 | 958 | |
d62a17ae | 959 | /* |
960 | * The pimreg vif is always going to be in index 0 | |
961 | * of the table. | |
962 | */ | |
963 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
964 | return 0; | |
965 | ||
966 | for (i = 1; i < MAXVIFS; i++) { | |
f88df3a6 | 967 | if (pim->iface_vif_index[i] == 0) |
d62a17ae | 968 | return i; |
969 | } | |
970 | return MAXVIFS; | |
744d91b3 DS |
971 | } |
972 | ||
12e41d03 DL |
973 | /* |
974 | pim_if_add_vif() uses ifindex as vif_index | |
975 | ||
976 | see also pim_if_find_vifindex_by_ifindex() | |
977 | */ | |
978 | int pim_if_add_vif(struct interface *ifp) | |
979 | { | |
d62a17ae | 980 | struct pim_interface *pim_ifp = ifp->info; |
981 | struct in_addr ifaddr; | |
982 | unsigned char flags = 0; | |
983 | ||
984 | zassert(pim_ifp); | |
985 | ||
986 | if (pim_ifp->mroute_vif_index > 0) { | |
987 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
988 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
989 | ifp->name, ifp->ifindex); | |
990 | return -1; | |
991 | } | |
992 | ||
993 | if (ifp->ifindex < 0) { | |
994 | zlog_warn("%s: ifindex=%d < 1 on interface %s", | |
995 | __PRETTY_FUNCTION__, ifp->ifindex, ifp->name); | |
996 | return -2; | |
997 | } | |
998 | ||
999 | ifaddr = pim_ifp->primary_address; | |
1000 | if (ifp->ifindex != PIM_OIF_PIM_REGISTER_VIF | |
1001 | && PIM_INADDR_IS_ANY(ifaddr)) { | |
1002 | zlog_warn( | |
1003 | "%s: could not get address for interface %s ifindex=%d", | |
1004 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex); | |
1005 | return -4; | |
1006 | } | |
1007 | ||
1008 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index(ifp); | |
1009 | ||
1010 | if (pim_ifp->mroute_vif_index >= MAXVIFS) { | |
1011 | zlog_warn( | |
1012 | "%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
1013 | __PRETTY_FUNCTION__, MAXVIFS, ifp->name); | |
1014 | return -3; | |
1015 | } | |
1016 | ||
1017 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
1018 | flags = VIFF_REGISTER; | |
b3f2bf7c | 1019 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 1020 | else |
1021 | flags = VIFF_USE_IFINDEX; | |
b3f2bf7c RW |
1022 | #endif |
1023 | ||
d62a17ae | 1024 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
1025 | /* pim_mroute_add_vif reported error */ | |
1026 | return -5; | |
1027 | } | |
12e41d03 | 1028 | |
f88df3a6 | 1029 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 1; |
d62a17ae | 1030 | return 0; |
12e41d03 DL |
1031 | } |
1032 | ||
12e41d03 DL |
1033 | int pim_if_del_vif(struct interface *ifp) |
1034 | { | |
d62a17ae | 1035 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 1036 | |
d62a17ae | 1037 | if (pim_ifp->mroute_vif_index < 1) { |
1038 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
1039 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
1040 | ifp->name, ifp->ifindex); | |
1041 | return -1; | |
1042 | } | |
12e41d03 | 1043 | |
ea3d967b | 1044 | pim_mroute_del_vif(ifp); |
12e41d03 | 1045 | |
d62a17ae | 1046 | /* |
1047 | Update vif_index | |
1048 | */ | |
f88df3a6 | 1049 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 0; |
12e41d03 | 1050 | |
d62a17ae | 1051 | pim_ifp->mroute_vif_index = -1; |
12e41d03 | 1052 | |
d62a17ae | 1053 | return 0; |
12e41d03 DL |
1054 | } |
1055 | ||
da82728d | 1056 | // DBS - VRF Revist |
b892f1dd | 1057 | struct interface *pim_if_find_by_vif_index(ifindex_t vif_index) |
12e41d03 | 1058 | { |
d62a17ae | 1059 | struct listnode *ifnode; |
1060 | struct interface *ifp; | |
da82728d DS |
1061 | struct pim_instance *pim; |
1062 | struct vrf *vrf; | |
12e41d03 | 1063 | |
da82728d DS |
1064 | RB_FOREACH(vrf, vrf_name_head, &vrfs_by_name) |
1065 | { | |
1066 | pim = vrf->info; | |
1067 | if (!pim) | |
1068 | continue; | |
1069 | ||
1070 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(pim->vrf_id), ifnode, | |
1071 | ifp)) { | |
1072 | if (ifp->info) { | |
1073 | struct pim_interface *pim_ifp; | |
1074 | pim_ifp = ifp->info; | |
b892f1dd | 1075 | |
da82728d DS |
1076 | if (vif_index == pim_ifp->mroute_vif_index) |
1077 | return ifp; | |
1078 | } | |
d62a17ae | 1079 | } |
1080 | } | |
12e41d03 | 1081 | |
d62a17ae | 1082 | return 0; |
12e41d03 DL |
1083 | } |
1084 | ||
1085 | /* | |
1086 | pim_if_add_vif() uses ifindex as vif_index | |
1087 | */ | |
b892f1dd | 1088 | int pim_if_find_vifindex_by_ifindex(ifindex_t ifindex) |
12e41d03 | 1089 | { |
d62a17ae | 1090 | struct pim_interface *pim_ifp; |
1091 | struct interface *ifp; | |
ae90dfbb | 1092 | |
0708beb1 | 1093 | ifp = if_lookup_by_index(ifindex, pimg->vrf_id); |
d62a17ae | 1094 | if (!ifp || !ifp->info) |
1095 | return -1; | |
1096 | pim_ifp = ifp->info; | |
ae90dfbb | 1097 | |
d62a17ae | 1098 | return pim_ifp->mroute_vif_index; |
12e41d03 DL |
1099 | } |
1100 | ||
1101 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
1102 | { | |
d62a17ae | 1103 | struct pim_interface *pim_ifp; |
12e41d03 | 1104 | |
d62a17ae | 1105 | pim_ifp = ifp->info; |
1106 | zassert(pim_ifp); | |
1107 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
12e41d03 | 1108 | |
d62a17ae | 1109 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; |
12e41d03 DL |
1110 | } |
1111 | ||
1112 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
1113 | { | |
d62a17ae | 1114 | if (pim_if_lan_delay_enabled(ifp)) { |
1115 | struct pim_interface *pim_ifp; | |
1116 | pim_ifp = ifp->info; | |
1117 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
1118 | } else { | |
1119 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
1120 | } | |
12e41d03 DL |
1121 | } |
1122 | ||
1123 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
1124 | { | |
d62a17ae | 1125 | if (pim_if_lan_delay_enabled(ifp)) { |
1126 | struct pim_interface *pim_ifp; | |
1127 | pim_ifp = ifp->info; | |
1128 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
1129 | } else { | |
1130 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
1131 | } | |
12e41d03 DL |
1132 | } |
1133 | ||
1134 | int pim_if_t_override_msec(struct interface *ifp) | |
1135 | { | |
d62a17ae | 1136 | int effective_override_interval_msec; |
1137 | int t_override_msec; | |
12e41d03 | 1138 | |
d62a17ae | 1139 | effective_override_interval_msec = |
1140 | pim_if_effective_override_interval_msec(ifp); | |
12e41d03 | 1141 | |
d62a17ae | 1142 | t_override_msec = random() % (effective_override_interval_msec + 1); |
12e41d03 | 1143 | |
d62a17ae | 1144 | return t_override_msec; |
12e41d03 DL |
1145 | } |
1146 | ||
1147 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
1148 | { | |
d62a17ae | 1149 | return pim_if_effective_propagation_delay_msec(ifp) |
1150 | + pim_if_effective_override_interval_msec(ifp); | |
12e41d03 DL |
1151 | } |
1152 | ||
1153 | /* | |
1154 | RFC 4601: 4.1.6. State Summarization Macros | |
1155 | ||
1156 | The function NBR( I, A ) uses information gathered through PIM Hello | |
1157 | messages to map the IP address A of a directly connected PIM | |
1158 | neighbor router on interface I to the primary IP address of the same | |
1159 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
1160 | address that it uses as the source of its PIM Hello messages. | |
1161 | */ | |
1162 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
1163 | struct in_addr addr) | |
1164 | { | |
d62a17ae | 1165 | struct listnode *neighnode; |
1166 | struct pim_neighbor *neigh; | |
1167 | struct pim_interface *pim_ifp; | |
1168 | struct prefix p; | |
1169 | ||
1170 | zassert(ifp); | |
1171 | ||
1172 | pim_ifp = ifp->info; | |
1173 | if (!pim_ifp) { | |
1174 | zlog_warn("%s: multicast not enabled on interface %s", | |
1175 | __PRETTY_FUNCTION__, ifp->name); | |
1176 | return 0; | |
1177 | } | |
1178 | ||
1179 | p.family = AF_INET; | |
1180 | p.u.prefix4 = addr; | |
1181 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
1182 | ||
1183 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, | |
1184 | neigh)) { | |
1185 | ||
1186 | /* primary address ? */ | |
1187 | if (neigh->source_addr.s_addr == addr.s_addr) | |
1188 | return neigh; | |
1189 | ||
1190 | /* secondary address ? */ | |
1191 | if (pim_neighbor_find_secondary(neigh, &p)) | |
1192 | return neigh; | |
1193 | } | |
1194 | ||
1195 | if (PIM_DEBUG_PIM_TRACE) { | |
1196 | char addr_str[INET_ADDRSTRLEN]; | |
1197 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); | |
1198 | zlog_debug( | |
1199 | "%s: neighbor not found for address %s on interface %s", | |
1200 | __PRETTY_FUNCTION__, addr_str, ifp->name); | |
1201 | } | |
1202 | ||
1203 | return NULL; | |
12e41d03 DL |
1204 | } |
1205 | ||
1206 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
1207 | { | |
d62a17ae | 1208 | struct pim_interface *pim_ifp; |
1209 | long t_suppressed_msec; | |
1210 | uint32_t ramount = 0; | |
12e41d03 | 1211 | |
d62a17ae | 1212 | pim_ifp = ifp->info; |
1213 | zassert(pim_ifp); | |
12e41d03 | 1214 | |
d62a17ae | 1215 | /* join suppression disabled ? */ |
1216 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
1217 | return 0; | |
12e41d03 | 1218 | |
d62a17ae | 1219 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ |
1220 | ramount = 1100 + (random() % (1400 - 1100 + 1)); | |
1221 | t_suppressed_msec = qpim_t_periodic * ramount; | |
12e41d03 | 1222 | |
d62a17ae | 1223 | return t_suppressed_msec; |
12e41d03 DL |
1224 | } |
1225 | ||
1226 | static void igmp_join_free(struct igmp_join *ij) | |
1227 | { | |
d62a17ae | 1228 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); |
12e41d03 DL |
1229 | } |
1230 | ||
1231 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
1232 | struct in_addr group_addr, | |
1233 | struct in_addr source_addr) | |
1234 | { | |
d62a17ae | 1235 | struct listnode *node; |
1236 | struct igmp_join *ij; | |
12e41d03 | 1237 | |
d62a17ae | 1238 | zassert(join_list); |
12e41d03 | 1239 | |
d62a17ae | 1240 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { |
1241 | if ((group_addr.s_addr == ij->group_addr.s_addr) | |
1242 | && (source_addr.s_addr == ij->source_addr.s_addr)) | |
1243 | return ij; | |
1244 | } | |
12e41d03 | 1245 | |
d62a17ae | 1246 | return 0; |
12e41d03 DL |
1247 | } |
1248 | ||
d62a17ae | 1249 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
1250 | struct in_addr group_addr, struct in_addr source_addr) | |
12e41d03 | 1251 | { |
d62a17ae | 1252 | int join_fd; |
12e41d03 | 1253 | |
d62a17ae | 1254 | join_fd = pim_socket_raw(IPPROTO_IGMP); |
1255 | if (join_fd < 0) { | |
1256 | return -1; | |
1257 | } | |
12e41d03 | 1258 | |
d62a17ae | 1259 | if (pim_socket_join_source(join_fd, ifindex, group_addr, source_addr, |
1260 | ifname)) { | |
1261 | close(join_fd); | |
1262 | return -2; | |
1263 | } | |
12e41d03 | 1264 | |
d62a17ae | 1265 | return join_fd; |
12e41d03 DL |
1266 | } |
1267 | ||
1268 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1269 | struct in_addr group_addr, | |
1270 | struct in_addr source_addr) | |
1271 | { | |
d62a17ae | 1272 | struct pim_interface *pim_ifp; |
1273 | struct igmp_join *ij; | |
1274 | int join_fd; | |
1275 | ||
1276 | pim_ifp = ifp->info; | |
1277 | zassert(pim_ifp); | |
1278 | ||
1279 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, | |
1280 | source_addr); | |
1281 | if (join_fd < 0) { | |
1282 | char group_str[INET_ADDRSTRLEN]; | |
1283 | char source_str[INET_ADDRSTRLEN]; | |
1284 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1285 | sizeof(group_str)); | |
1286 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1287 | sizeof(source_str)); | |
1288 | zlog_warn( | |
1289 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
1290 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1291 | return 0; | |
1292 | } | |
1293 | ||
1294 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); | |
1295 | if (!ij) { | |
1296 | char group_str[INET_ADDRSTRLEN]; | |
1297 | char source_str[INET_ADDRSTRLEN]; | |
1298 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1299 | sizeof(group_str)); | |
1300 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1301 | sizeof(source_str)); | |
1302 | zlog_err( | |
1303 | "%s: XCALLOC(%zu) failure for IGMP group %s source %s on interface %s", | |
1304 | __PRETTY_FUNCTION__, sizeof(*ij), group_str, source_str, | |
1305 | ifp->name); | |
1306 | close(join_fd); | |
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | ij->sock_fd = join_fd; | |
1311 | ij->group_addr = group_addr; | |
1312 | ij->source_addr = source_addr; | |
1313 | ij->sock_creation = pim_time_monotonic_sec(); | |
1314 | ||
1315 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1316 | ||
1317 | return ij; | |
12e41d03 DL |
1318 | } |
1319 | ||
d62a17ae | 1320 | int pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1321 | struct in_addr source_addr) |
1322 | { | |
d62a17ae | 1323 | struct pim_interface *pim_ifp; |
1324 | struct igmp_join *ij; | |
1325 | ||
1326 | pim_ifp = ifp->info; | |
1327 | if (!pim_ifp) { | |
1328 | zlog_warn("%s: multicast not enabled on interface %s", | |
1329 | __PRETTY_FUNCTION__, ifp->name); | |
1330 | return -1; | |
1331 | } | |
1332 | ||
1333 | if (!pim_ifp->igmp_join_list) { | |
1334 | pim_ifp->igmp_join_list = list_new(); | |
1335 | if (!pim_ifp->igmp_join_list) { | |
1336 | zlog_err("%s %s: failure: igmp_join_list=list_new()", | |
1337 | __FILE__, __PRETTY_FUNCTION__); | |
1338 | return -2; | |
1339 | } | |
1340 | pim_ifp->igmp_join_list->del = (void (*)(void *))igmp_join_free; | |
1341 | } | |
1342 | ||
1343 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1344 | if (ij) { | |
1345 | char group_str[INET_ADDRSTRLEN]; | |
1346 | char source_str[INET_ADDRSTRLEN]; | |
1347 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1348 | sizeof(group_str)); | |
1349 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1350 | sizeof(source_str)); | |
1351 | zlog_warn( | |
1352 | "%s: can't re-join existing IGMP group %s source %s on interface %s", | |
1353 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1354 | return -3; | |
1355 | } | |
1356 | ||
1357 | ij = igmp_join_new(ifp, group_addr, source_addr); | |
1358 | if (!ij) { | |
1359 | char group_str[INET_ADDRSTRLEN]; | |
1360 | char source_str[INET_ADDRSTRLEN]; | |
1361 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1362 | sizeof(group_str)); | |
1363 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1364 | sizeof(source_str)); | |
1365 | zlog_warn( | |
1366 | "%s: igmp_join_new() failure for IGMP group %s source %s on interface %s", | |
1367 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1368 | return -4; | |
1369 | } | |
1370 | ||
1371 | if (PIM_DEBUG_IGMP_EVENTS) { | |
1372 | char group_str[INET_ADDRSTRLEN]; | |
1373 | char source_str[INET_ADDRSTRLEN]; | |
1374 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1375 | sizeof(group_str)); | |
1376 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1377 | sizeof(source_str)); | |
1378 | zlog_debug( | |
1379 | "%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
1380 | __PRETTY_FUNCTION__, source_str, group_str, ifp->name); | |
1381 | } | |
12e41d03 | 1382 | |
d62a17ae | 1383 | return 0; |
1384 | } | |
12e41d03 DL |
1385 | |
1386 | ||
d62a17ae | 1387 | int pim_if_igmp_join_del(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1388 | struct in_addr source_addr) |
1389 | { | |
d62a17ae | 1390 | struct pim_interface *pim_ifp; |
1391 | struct igmp_join *ij; | |
1392 | ||
1393 | pim_ifp = ifp->info; | |
1394 | if (!pim_ifp) { | |
1395 | zlog_warn("%s: multicast not enabled on interface %s", | |
1396 | __PRETTY_FUNCTION__, 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__, ifp->name); | |
1403 | return -2; | |
1404 | } | |
1405 | ||
1406 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1407 | if (!ij) { | |
1408 | char group_str[INET_ADDRSTRLEN]; | |
1409 | char source_str[INET_ADDRSTRLEN]; | |
1410 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1411 | sizeof(group_str)); | |
1412 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1413 | sizeof(source_str)); | |
1414 | zlog_warn( | |
1415 | "%s: could not find IGMP group %s source %s on interface %s", | |
1416 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1417 | return -3; | |
1418 | } | |
1419 | ||
1420 | if (close(ij->sock_fd)) { | |
1421 | char group_str[INET_ADDRSTRLEN]; | |
1422 | char source_str[INET_ADDRSTRLEN]; | |
1423 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1424 | sizeof(group_str)); | |
1425 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1426 | sizeof(source_str)); | |
1427 | zlog_warn( | |
1428 | "%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
1429 | __PRETTY_FUNCTION__, ij->sock_fd, group_str, source_str, | |
1430 | ifp->name, errno, safe_strerror(errno)); | |
1431 | /* warning only */ | |
1432 | } | |
1433 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1434 | igmp_join_free(ij); | |
1435 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
1436 | list_delete(pim_ifp->igmp_join_list); | |
1437 | pim_ifp->igmp_join_list = 0; | |
1438 | } | |
1439 | ||
1440 | return 0; | |
12e41d03 DL |
1441 | } |
1442 | ||
1443 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1444 | { | |
d62a17ae | 1445 | struct pim_interface *pim_ifp; |
1446 | struct listnode *node; | |
1447 | struct listnode *nextnode; | |
1448 | struct igmp_join *ij; | |
1449 | ||
1450 | pim_ifp = ifp->info; | |
1451 | if (!pim_ifp) { | |
1452 | zlog_warn("%s: multicast not enabled on interface %s", | |
1453 | __PRETTY_FUNCTION__, ifp->name); | |
1454 | return; | |
1455 | } | |
1456 | ||
1457 | if (!pim_ifp->igmp_join_list) | |
1458 | return; | |
1459 | ||
1460 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1461 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
12e41d03 DL |
1462 | } |
1463 | ||
1464 | /* | |
1465 | RFC 4601 | |
1466 | ||
1467 | Transitions from "I am Assert Loser" State | |
1468 | ||
1469 | Current Winner's GenID Changes or NLT Expires | |
1470 | ||
1471 | The Neighbor Liveness Timer associated with the current winner | |
1472 | expires or we receive a Hello message from the current winner | |
1473 | reporting a different GenID from the one it previously reported. | |
1474 | This indicates that the current winner's interface or router has | |
1475 | gone down (and may have come back up), and so we must assume it no | |
1476 | longer knows it was the winner. | |
1477 | */ | |
1478 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1479 | struct in_addr neigh_addr) | |
1480 | { | |
d62a17ae | 1481 | struct pim_interface *pim_ifp; |
1482 | struct listnode *node; | |
1483 | struct listnode *next_node; | |
1484 | struct pim_ifchannel *ch; | |
1485 | ||
1486 | pim_ifp = ifp->info; | |
1487 | zassert(pim_ifp); | |
1488 | ||
1489 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, | |
1490 | ch)) { | |
1491 | /* Is (S,G,I) assert loser ? */ | |
1492 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1493 | continue; | |
1494 | /* Dead neighbor was winner ? */ | |
1495 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1496 | continue; | |
1497 | ||
1498 | assert_action_a5(ch); | |
1499 | } | |
12e41d03 DL |
1500 | } |
1501 | ||
1502 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1503 | { | |
d62a17ae | 1504 | struct listnode *ch_node; |
1505 | struct pim_ifchannel *ch; | |
12e41d03 | 1506 | |
d62a17ae | 1507 | /* clear off flag from interface's upstreams */ |
1508 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1509 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED( | |
1510 | ch->upstream->flags); | |
1511 | } | |
12e41d03 | 1512 | |
d62a17ae | 1513 | /* scan per-interface (S,G,I) state on this I interface */ |
1514 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1515 | struct pim_upstream *up = ch->upstream; | |
12e41d03 | 1516 | |
d62a17ae | 1517 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) |
1518 | continue; | |
12e41d03 | 1519 | |
d62a17ae | 1520 | /* update join_desired for the global (S,G) state */ |
9b29ea95 | 1521 | pim_upstream_update_join_desired(pim_ifp->pim, up); |
d62a17ae | 1522 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); |
1523 | } | |
12e41d03 DL |
1524 | } |
1525 | ||
1526 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1527 | { | |
d62a17ae | 1528 | struct pim_interface *pim_ifp; |
1529 | struct listnode *node; | |
1530 | struct listnode *next_node; | |
1531 | struct pim_ifchannel *ch; | |
1532 | ||
1533 | pim_ifp = ifp->info; | |
1534 | if (!pim_ifp) | |
1535 | return; | |
1536 | ||
1537 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, | |
1538 | ch)) { | |
1539 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1540 | } | |
12e41d03 | 1541 | } |
c992c9a0 DS |
1542 | |
1543 | /* | |
1544 | * PIM wants to have an interface pointer for everything it does. | |
1545 | * The pimreg is a special interface that we have that is not | |
1546 | * quite an inteface but a VIF is created for it. | |
1547 | */ | |
43e40fdf | 1548 | void pim_if_create_pimreg(struct pim_instance *pim) |
c992c9a0 | 1549 | { |
afa2b179 | 1550 | char pimreg_name[100]; |
c992c9a0 | 1551 | |
43e40fdf | 1552 | if (!pim->regiface) { |
afa2b179 DS |
1553 | if (pim->vrf_id == VRF_DEFAULT) |
1554 | strcpy(pimreg_name, "pimreg"); | |
1555 | else | |
1556 | sprintf(pimreg_name, "pimreg%d", | |
1557 | pim->vrf->data.l.table_id); | |
1558 | ||
1559 | pim->regiface = if_create(pimreg_name, strlen(pimreg_name), | |
1560 | pim->vrf_id); | |
43e40fdf DS |
1561 | pim->regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; |
1562 | ||
1563 | pim_if_new(pim->regiface, 0, 0); | |
d62a17ae | 1564 | } |
c992c9a0 | 1565 | } |
3565202d | 1566 | |
d62a17ae | 1567 | int pim_if_connected_to_source(struct interface *ifp, struct in_addr src) |
3565202d | 1568 | { |
d62a17ae | 1569 | struct listnode *cnode; |
1570 | struct connected *c; | |
1571 | struct prefix p; | |
1572 | ||
1573 | if (!ifp) | |
1574 | return 0; | |
1575 | ||
1576 | p.family = AF_INET; | |
1577 | p.u.prefix4 = src; | |
1578 | p.prefixlen = IPV4_MAX_BITLEN; | |
1579 | ||
1580 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
1581 | if ((c->address->family == AF_INET) | |
1582 | && prefix_match(CONNECTED_PREFIX(c), &p)) { | |
1583 | return 1; | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | return 0; | |
3565202d | 1588 | } |
9f0edbc9 | 1589 | |
d62a17ae | 1590 | struct interface *pim_if_lookup_address_vrf(struct in_addr src, vrf_id_t vrf_id) |
9f0edbc9 | 1591 | { |
d62a17ae | 1592 | struct listnode *ifnode; |
1593 | struct interface *ifp; | |
1594 | ||
1595 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(vrf_id), ifnode, ifp)) { | |
1596 | if (pim_if_connected_to_source(ifp, src) && ifp->info) | |
1597 | return ifp; | |
1598 | } | |
1599 | return NULL; | |
9f0edbc9 | 1600 | } |