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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" |
37664928 | 30 | #include "ferr.h" |
12e41d03 DL |
31 | |
32 | #include "pimd.h" | |
c2cf4b02 | 33 | #include "pim_instance.h" |
cba44481 | 34 | #include "pim_zebra.h" |
12e41d03 DL |
35 | #include "pim_iface.h" |
36 | #include "pim_igmp.h" | |
37 | #include "pim_mroute.h" | |
38 | #include "pim_oil.h" | |
39 | #include "pim_str.h" | |
40 | #include "pim_pim.h" | |
41 | #include "pim_neighbor.h" | |
42 | #include "pim_ifchannel.h" | |
12e41d03 DL |
43 | #include "pim_sock.h" |
44 | #include "pim_time.h" | |
45 | #include "pim_ssmpingd.h" | |
7176984f | 46 | #include "pim_rp.h" |
cba44481 | 47 | #include "pim_nht.h" |
69ccd63e | 48 | #include "pim_jp_agg.h" |
12e41d03 DL |
49 | |
50 | static void pim_if_igmp_join_del_all(struct interface *ifp); | |
dba88ccb | 51 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
d62a17ae | 52 | struct in_addr group_addr, |
53 | struct in_addr source_addr); | |
12e41d03 | 54 | |
f88df3a6 | 55 | void pim_if_init(struct pim_instance *pim) |
ea4a71fc | 56 | { |
d62a17ae | 57 | int i; |
dc0665f1 | 58 | |
d62a17ae | 59 | for (i = 0; i < MAXVIFS; i++) |
f88df3a6 | 60 | pim->iface_vif_index[i] = 0; |
ea4a71fc DS |
61 | } |
62 | ||
f88df3a6 | 63 | void pim_if_terminate(struct pim_instance *pim) |
ea4a71fc | 64 | { |
1a8a3da8 DS |
65 | // Nothing to do at this moment |
66 | return; | |
ea4a71fc DS |
67 | } |
68 | ||
69 | static void *if_list_clean(struct pim_interface *pim_ifp) | |
70 | { | |
ad7b74c4 DS |
71 | struct pim_ifchannel *ch; |
72 | ||
f09eaf1c | 73 | if (pim_ifp->igmp_join_list) |
d62a17ae | 74 | list_delete(pim_ifp->igmp_join_list); |
ea4a71fc | 75 | |
f09eaf1c | 76 | if (pim_ifp->igmp_socket_list) |
d62a17ae | 77 | list_delete(pim_ifp->igmp_socket_list); |
ea4a71fc | 78 | |
f09eaf1c | 79 | if (pim_ifp->pim_neighbor_list) |
d62a17ae | 80 | list_delete(pim_ifp->pim_neighbor_list); |
ea4a71fc | 81 | |
d62a17ae | 82 | if (pim_ifp->upstream_switch_list) |
83 | list_delete(pim_ifp->upstream_switch_list); | |
982bff89 | 84 | |
69ccd63e DS |
85 | if (pim_ifp->sec_addr_list) |
86 | list_delete(pim_ifp->sec_addr_list); | |
87 | ||
ad7b74c4 DS |
88 | while ((ch = RB_ROOT(pim_ifchannel_rb, |
89 | &pim_ifp->ifchannel_rb)) != NULL) | |
90 | pim_ifchannel_delete(ch); | |
a625e937 | 91 | |
d62a17ae | 92 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
ea4a71fc | 93 | |
d62a17ae | 94 | return 0; |
ea4a71fc DS |
95 | } |
96 | ||
f09eaf1c DS |
97 | static void pim_sec_addr_free(struct pim_secondary_addr *sec_addr) |
98 | { | |
99 | XFREE(MTYPE_PIM_SEC_ADDR, sec_addr); | |
100 | } | |
101 | ||
102 | static int pim_sec_addr_comp(const void *p1, const void *p2) | |
103 | { | |
104 | const struct pim_secondary_addr *sec1 = p1; | |
105 | const struct pim_secondary_addr *sec2 = p2; | |
106 | ||
107 | if (sec1->addr.family == AF_INET && sec2->addr.family == AF_INET6) | |
108 | return -1; | |
109 | ||
110 | if (sec1->addr.family == AF_INET6 && sec2->addr.family == AF_INET) | |
111 | return 1; | |
112 | ||
113 | if (sec1->addr.family == AF_INET) { | |
114 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
115 | < ntohl(sec2->addr.u.prefix4.s_addr)) | |
116 | return -1; | |
117 | ||
118 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
119 | > ntohl(sec2->addr.u.prefix4.s_addr)) | |
120 | return 1; | |
121 | } else { | |
122 | return memcmp(&sec1->addr.u.prefix6, &sec2->addr.u.prefix6, | |
123 | sizeof(struct in6_addr)); | |
124 | } | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
12e41d03 DL |
129 | struct pim_interface *pim_if_new(struct interface *ifp, int igmp, int pim) |
130 | { | |
d62a17ae | 131 | struct pim_interface *pim_ifp; |
132 | ||
133 | zassert(ifp); | |
134 | zassert(!ifp->info); | |
135 | ||
136 | pim_ifp = XCALLOC(MTYPE_PIM_INTERFACE, sizeof(*pim_ifp)); | |
137 | if (!pim_ifp) { | |
138 | zlog_err("PIM XCALLOC(%zu) failure", sizeof(*pim_ifp)); | |
139 | return 0; | |
140 | } | |
141 | ||
142 | pim_ifp->options = 0; | |
18d8291f | 143 | pim_ifp->pim = pim_get_pim_instance(ifp->vrf_id); |
d62a17ae | 144 | pim_ifp->mroute_vif_index = -1; |
145 | ||
146 | pim_ifp->igmp_version = IGMP_DEFAULT_VERSION; | |
147 | pim_ifp->igmp_default_robustness_variable = | |
148 | IGMP_DEFAULT_ROBUSTNESS_VARIABLE; | |
149 | pim_ifp->igmp_default_query_interval = IGMP_GENERAL_QUERY_INTERVAL; | |
150 | pim_ifp->igmp_query_max_response_time_dsec = | |
151 | IGMP_QUERY_MAX_RESPONSE_TIME_DSEC; | |
152 | pim_ifp->igmp_specific_query_max_response_time_dsec = | |
153 | IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC; | |
154 | ||
155 | /* | |
156 | RFC 3376: 8.3. Query Response Interval | |
157 | The number of seconds represented by the [Query Response Interval] | |
158 | must be less than the [Query Interval]. | |
159 | */ | |
160 | zassert(pim_ifp->igmp_query_max_response_time_dsec | |
161 | < pim_ifp->igmp_default_query_interval); | |
162 | ||
163 | if (pim) | |
164 | PIM_IF_DO_PIM(pim_ifp->options); | |
165 | if (igmp) | |
166 | PIM_IF_DO_IGMP(pim_ifp->options); | |
167 | ||
168 | PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(pim_ifp->options); | |
169 | ||
170 | pim_ifp->igmp_join_list = NULL; | |
171 | pim_ifp->igmp_socket_list = NULL; | |
172 | pim_ifp->pim_neighbor_list = NULL; | |
173 | pim_ifp->upstream_switch_list = NULL; | |
d62a17ae | 174 | pim_ifp->pim_generation_id = 0; |
175 | ||
176 | /* list of struct igmp_sock */ | |
177 | pim_ifp->igmp_socket_list = list_new(); | |
178 | if (!pim_ifp->igmp_socket_list) { | |
f09eaf1c DS |
179 | zlog_err("%s: failure: igmp_socket_list=list_new()", |
180 | __PRETTY_FUNCTION__); | |
d62a17ae | 181 | return if_list_clean(pim_ifp); |
182 | } | |
183 | pim_ifp->igmp_socket_list->del = (void (*)(void *))igmp_sock_free; | |
184 | ||
185 | /* list of struct pim_neighbor */ | |
186 | pim_ifp->pim_neighbor_list = list_new(); | |
187 | if (!pim_ifp->pim_neighbor_list) { | |
f09eaf1c DS |
188 | zlog_err("%s: failure: pim_neighbor_list=list_new()", |
189 | __PRETTY_FUNCTION__); | |
d62a17ae | 190 | return if_list_clean(pim_ifp); |
191 | } | |
192 | pim_ifp->pim_neighbor_list->del = (void (*)(void *))pim_neighbor_free; | |
193 | ||
194 | pim_ifp->upstream_switch_list = list_new(); | |
195 | if (!pim_ifp->upstream_switch_list) { | |
f09eaf1c DS |
196 | zlog_err("%s: failure: upstream_switch_list=list_new()", |
197 | __PRETTY_FUNCTION__); | |
d62a17ae | 198 | return if_list_clean(pim_ifp); |
199 | } | |
69ccd63e DS |
200 | pim_ifp->upstream_switch_list->del = |
201 | (void (*)(void *))pim_jp_agg_group_list_free; | |
202 | pim_ifp->upstream_switch_list->cmp = pim_jp_agg_group_list_cmp; | |
d62a17ae | 203 | |
f09eaf1c DS |
204 | pim_ifp->sec_addr_list = list_new(); |
205 | if (!pim_ifp->sec_addr_list) { | |
206 | zlog_err("%s: failure: secondary addresslist", | |
207 | __PRETTY_FUNCTION__); | |
208 | } | |
209 | pim_ifp->sec_addr_list->del = (void (*)(void *))pim_sec_addr_free; | |
210 | pim_ifp->sec_addr_list->cmp = | |
211 | (int (*)(void *, void *))pim_sec_addr_comp; | |
212 | ||
ad7b74c4 | 213 | RB_INIT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); |
d62a17ae | 214 | |
215 | ifp->info = pim_ifp; | |
216 | ||
217 | pim_sock_reset(ifp); | |
218 | ||
219 | pim_if_add_vif(ifp); | |
220 | ||
221 | return pim_ifp; | |
12e41d03 DL |
222 | } |
223 | ||
224 | void pim_if_delete(struct interface *ifp) | |
225 | { | |
d62a17ae | 226 | struct pim_interface *pim_ifp; |
ad7b74c4 | 227 | struct pim_ifchannel *ch; |
12e41d03 | 228 | |
d62a17ae | 229 | zassert(ifp); |
230 | pim_ifp = ifp->info; | |
231 | zassert(pim_ifp); | |
12e41d03 | 232 | |
d62a17ae | 233 | if (pim_ifp->igmp_join_list) { |
234 | pim_if_igmp_join_del_all(ifp); | |
235 | } | |
12e41d03 | 236 | |
d62a17ae | 237 | pim_ifchannel_delete_all(ifp); |
238 | igmp_sock_delete_all(ifp); | |
12e41d03 | 239 | |
d62a17ae | 240 | pim_neighbor_delete_all(ifp, "Interface removed from configuration"); |
12e41d03 | 241 | |
d62a17ae | 242 | pim_if_del_vif(ifp); |
12e41d03 | 243 | |
d62a17ae | 244 | list_delete(pim_ifp->igmp_socket_list); |
245 | list_delete(pim_ifp->pim_neighbor_list); | |
246 | list_delete(pim_ifp->upstream_switch_list); | |
69ccd63e | 247 | list_delete(pim_ifp->sec_addr_list); |
12e41d03 | 248 | |
ad7b74c4 DS |
249 | while ((ch = RB_ROOT(pim_ifchannel_rb, |
250 | &pim_ifp->ifchannel_rb)) != NULL) | |
251 | pim_ifchannel_delete(ch); | |
a625e937 | 252 | |
d62a17ae | 253 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
12e41d03 | 254 | |
d62a17ae | 255 | ifp->info = NULL; |
12e41d03 DL |
256 | } |
257 | ||
258 | void pim_if_update_could_assert(struct interface *ifp) | |
259 | { | |
d62a17ae | 260 | struct pim_interface *pim_ifp; |
d62a17ae | 261 | struct pim_ifchannel *ch; |
12e41d03 | 262 | |
d62a17ae | 263 | pim_ifp = ifp->info; |
264 | zassert(pim_ifp); | |
12e41d03 | 265 | |
a2addae8 | 266 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 267 | pim_ifchannel_update_could_assert(ch); |
268 | } | |
12e41d03 DL |
269 | } |
270 | ||
271 | static void pim_if_update_my_assert_metric(struct interface *ifp) | |
272 | { | |
d62a17ae | 273 | struct pim_interface *pim_ifp; |
d62a17ae | 274 | struct pim_ifchannel *ch; |
12e41d03 | 275 | |
d62a17ae | 276 | pim_ifp = ifp->info; |
277 | zassert(pim_ifp); | |
12e41d03 | 278 | |
a2addae8 | 279 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 280 | pim_ifchannel_update_my_assert_metric(ch); |
281 | } | |
12e41d03 DL |
282 | } |
283 | ||
284 | static void pim_addr_change(struct interface *ifp) | |
285 | { | |
d62a17ae | 286 | struct pim_interface *pim_ifp; |
287 | ||
288 | pim_ifp = ifp->info; | |
289 | zassert(pim_ifp); | |
290 | ||
291 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- | |
292 | Done TODO T30 */ | |
293 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
294 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
295 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
296 | pim_if_update_assert_tracking_desired( | |
297 | ifp); /* depends on DR, join_desired */ | |
298 | ||
299 | /* | |
300 | RFC 4601: 4.3.1. Sending Hello Messages | |
301 | ||
302 | 1) Before an interface goes down or changes primary IP address, a | |
303 | Hello message with a zero HoldTime should be sent immediately | |
304 | (with the old IP address if the IP address changed). | |
305 | -- FIXME See CAVEAT C13 | |
306 | ||
307 | 2) After an interface has changed its IP address, it MUST send a | |
308 | Hello message with its new IP address. | |
309 | -- DONE below | |
310 | ||
311 | 3) If an interface changes one of its secondary IP addresses, a | |
312 | Hello message with an updated Address_List option and a non-zero | |
313 | HoldTime should be sent immediately. | |
314 | -- FIXME See TODO T31 | |
315 | */ | |
316 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
317 | if (pim_ifp->pim_sock_fd < 0) | |
318 | return; | |
319 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
12e41d03 DL |
320 | } |
321 | ||
12e41d03 DL |
322 | static int detect_primary_address_change(struct interface *ifp, |
323 | int force_prim_as_any, | |
324 | const char *caller) | |
325 | { | |
d62a17ae | 326 | struct pim_interface *pim_ifp = ifp->info; |
327 | struct in_addr new_prim_addr; | |
328 | int changed; | |
329 | ||
330 | if (force_prim_as_any) | |
331 | new_prim_addr.s_addr = INADDR_ANY; | |
332 | else | |
333 | new_prim_addr = pim_find_primary_addr(ifp); | |
334 | ||
335 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
336 | ||
337 | if (PIM_DEBUG_ZEBRA) { | |
338 | char new_prim_str[INET_ADDRSTRLEN]; | |
339 | char old_prim_str[INET_ADDRSTRLEN]; | |
340 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, | |
341 | sizeof(new_prim_str)); | |
342 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, | |
343 | sizeof(old_prim_str)); | |
344 | zlog_debug("%s: old=%s new=%s on interface %s: %s", | |
345 | __PRETTY_FUNCTION__, old_prim_str, new_prim_str, | |
346 | ifp->name, changed ? "changed" : "unchanged"); | |
347 | } | |
348 | ||
349 | if (changed) { | |
350 | pim_ifp->primary_address = new_prim_addr; | |
351 | } | |
352 | ||
353 | return changed; | |
12e41d03 DL |
354 | } |
355 | ||
7176984f | 356 | static struct pim_secondary_addr * |
294b6d72 | 357 | pim_sec_addr_find(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 358 | { |
d62a17ae | 359 | struct pim_secondary_addr *sec_addr; |
360 | struct listnode *node; | |
7176984f | 361 | |
d62a17ae | 362 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
363 | if (prefix_cmp(&sec_addr->addr, addr)) { | |
364 | return sec_addr; | |
365 | } | |
366 | } | |
7176984f | 367 | |
d62a17ae | 368 | return NULL; |
7176984f | 369 | } |
370 | ||
371 | static void pim_sec_addr_del(struct pim_interface *pim_ifp, | |
d62a17ae | 372 | struct pim_secondary_addr *sec_addr) |
7176984f | 373 | { |
d62a17ae | 374 | listnode_delete(pim_ifp->sec_addr_list, sec_addr); |
375 | pim_sec_addr_free(sec_addr); | |
7176984f | 376 | } |
377 | ||
294b6d72 | 378 | static int pim_sec_addr_add(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 379 | { |
d62a17ae | 380 | int changed = 0; |
381 | struct pim_secondary_addr *sec_addr; | |
382 | ||
383 | sec_addr = pim_sec_addr_find(pim_ifp, addr); | |
384 | if (sec_addr) { | |
385 | sec_addr->flags &= ~PIM_SEC_ADDRF_STALE; | |
386 | return changed; | |
387 | } | |
388 | ||
d62a17ae | 389 | sec_addr = XCALLOC(MTYPE_PIM_SEC_ADDR, sizeof(*sec_addr)); |
f09eaf1c | 390 | if (!sec_addr) |
d62a17ae | 391 | return changed; |
d62a17ae | 392 | |
393 | changed = 1; | |
394 | sec_addr->addr = *addr; | |
395 | listnode_add_sort(pim_ifp->sec_addr_list, sec_addr); | |
396 | ||
397 | return changed; | |
7176984f | 398 | } |
399 | ||
400 | static int pim_sec_addr_del_all(struct pim_interface *pim_ifp) | |
401 | { | |
d62a17ae | 402 | int changed = 0; |
403 | ||
d62a17ae | 404 | if (!list_isempty(pim_ifp->sec_addr_list)) { |
405 | changed = 1; | |
406 | /* remove all nodes and free up the list itself */ | |
407 | list_delete_all_node(pim_ifp->sec_addr_list); | |
d62a17ae | 408 | } |
409 | ||
410 | return changed; | |
7176984f | 411 | } |
412 | ||
413 | static int pim_sec_addr_update(struct interface *ifp) | |
414 | { | |
d62a17ae | 415 | struct pim_interface *pim_ifp = ifp->info; |
416 | struct connected *ifc; | |
417 | struct listnode *node; | |
418 | struct listnode *nextnode; | |
419 | struct pim_secondary_addr *sec_addr; | |
420 | int changed = 0; | |
421 | ||
f09eaf1c DS |
422 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, |
423 | sec_addr)) { | |
424 | sec_addr->flags |= PIM_SEC_ADDRF_STALE; | |
d62a17ae | 425 | } |
426 | ||
427 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
428 | struct prefix *p = ifc->address; | |
429 | ||
430 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
431 | continue; | |
432 | } | |
433 | ||
434 | if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) { | |
435 | /* don't add the primary address into the secondary | |
436 | * address list */ | |
437 | continue; | |
438 | } | |
439 | ||
440 | if (pim_sec_addr_add(pim_ifp, p)) { | |
441 | changed = 1; | |
442 | } | |
443 | } | |
444 | ||
f09eaf1c DS |
445 | /* Drop stale entries */ |
446 | for (ALL_LIST_ELEMENTS(pim_ifp->sec_addr_list, node, nextnode, | |
447 | sec_addr)) { | |
448 | if (sec_addr->flags & PIM_SEC_ADDRF_STALE) { | |
449 | pim_sec_addr_del(pim_ifp, sec_addr); | |
450 | changed = 1; | |
d62a17ae | 451 | } |
452 | } | |
453 | ||
454 | return changed; | |
7176984f | 455 | } |
456 | ||
4763cd0e | 457 | static int detect_secondary_address_change(struct interface *ifp, |
d62a17ae | 458 | int force_prim_as_any, |
459 | const char *caller) | |
12e41d03 | 460 | { |
d62a17ae | 461 | struct pim_interface *pim_ifp = ifp->info; |
462 | int changed = 0; | |
463 | ||
464 | if (force_prim_as_any) { | |
465 | /* if primary address is being forced to zero just flush the | |
466 | * secondary address list */ | |
467 | changed = pim_sec_addr_del_all(pim_ifp); | |
468 | } else { | |
469 | /* re-evaluate the secondary address list */ | |
470 | changed = pim_sec_addr_update(ifp); | |
471 | } | |
472 | ||
473 | return changed; | |
4763cd0e | 474 | } |
475 | ||
d62a17ae | 476 | static void detect_address_change(struct interface *ifp, int force_prim_as_any, |
477 | const char *caller) | |
4763cd0e | 478 | { |
d62a17ae | 479 | int changed = 0; |
480 | struct pim_interface *pim_ifp; | |
12e41d03 | 481 | |
d62a17ae | 482 | pim_ifp = ifp->info; |
483 | if (!pim_ifp) | |
484 | return; | |
4763cd0e | 485 | |
d62a17ae | 486 | if (detect_primary_address_change(ifp, force_prim_as_any, caller)) { |
487 | changed = 1; | |
488 | } | |
12e41d03 | 489 | |
d62a17ae | 490 | if (detect_secondary_address_change(ifp, force_prim_as_any, caller)) { |
491 | changed = 1; | |
492 | } | |
4763cd0e | 493 | |
494 | ||
d62a17ae | 495 | if (changed) { |
496 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
497 | return; | |
498 | } | |
4763cd0e | 499 | |
d62a17ae | 500 | pim_addr_change(ifp); |
501 | } | |
12e41d03 | 502 | |
d62a17ae | 503 | /* XXX: if we have unnumbered interfaces we need to run detect address |
504 | * address change on all of them when the lo address changes */ | |
12e41d03 DL |
505 | } |
506 | ||
4763cd0e | 507 | int pim_update_source_set(struct interface *ifp, struct in_addr source) |
12e41d03 | 508 | { |
d62a17ae | 509 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 510 | |
d62a17ae | 511 | if (!pim_ifp) { |
512 | return PIM_IFACE_NOT_FOUND; | |
513 | } | |
12e41d03 | 514 | |
d62a17ae | 515 | if (pim_ifp->update_source.s_addr == source.s_addr) { |
516 | return PIM_UPDATE_SOURCE_DUP; | |
517 | } | |
4763cd0e | 518 | |
d62a17ae | 519 | pim_ifp->update_source = source; |
520 | detect_address_change(ifp, 0 /* force_prim_as_any */, | |
521 | __PRETTY_FUNCTION__); | |
4763cd0e | 522 | |
d62a17ae | 523 | return PIM_SUCCESS; |
12e41d03 DL |
524 | } |
525 | ||
526 | void pim_if_addr_add(struct connected *ifc) | |
527 | { | |
d62a17ae | 528 | struct pim_interface *pim_ifp; |
529 | struct interface *ifp; | |
530 | struct in_addr ifaddr; | |
531 | ||
532 | zassert(ifc); | |
533 | ||
534 | ifp = ifc->ifp; | |
535 | zassert(ifp); | |
536 | pim_ifp = ifp->info; | |
537 | if (!pim_ifp) | |
538 | return; | |
539 | ||
540 | if (!if_is_operative(ifp)) | |
541 | return; | |
542 | ||
543 | if (PIM_DEBUG_ZEBRA) { | |
544 | char buf[BUFSIZ]; | |
545 | prefix2str(ifc->address, buf, BUFSIZ); | |
546 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
547 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
548 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
549 | ? "secondary" | |
550 | : "primary"); | |
551 | } | |
552 | ||
553 | ifaddr = ifc->address->u.prefix4; | |
554 | ||
555 | detect_address_change(ifp, 0, __PRETTY_FUNCTION__); | |
556 | ||
2002dcdb DS |
557 | // if (ifc->address->family != AF_INET) |
558 | // return; | |
d62a17ae | 559 | |
560 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { | |
561 | struct igmp_sock *igmp; | |
562 | ||
563 | /* lookup IGMP socket */ | |
564 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
565 | ifaddr); | |
566 | if (!igmp) { | |
567 | /* if addr new, add IGMP socket */ | |
c77a04e4 DS |
568 | if (ifc->address->family == AF_INET) |
569 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, | |
570 | ifaddr, ifp); | |
d62a17ae | 571 | } |
572 | ||
573 | /* Replay Static IGMP groups */ | |
574 | if (pim_ifp->igmp_join_list) { | |
575 | struct listnode *node; | |
576 | struct listnode *nextnode; | |
577 | struct igmp_join *ij; | |
578 | int join_fd; | |
579 | ||
580 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, | |
581 | nextnode, ij)) { | |
582 | /* Close socket and reopen with Source and Group | |
583 | */ | |
584 | close(ij->sock_fd); | |
585 | join_fd = igmp_join_sock( | |
586 | ifp->name, ifp->ifindex, ij->group_addr, | |
587 | ij->source_addr); | |
588 | if (join_fd < 0) { | |
589 | char group_str[INET_ADDRSTRLEN]; | |
590 | char source_str[INET_ADDRSTRLEN]; | |
591 | pim_inet4_dump("<grp?>", ij->group_addr, | |
592 | group_str, | |
593 | sizeof(group_str)); | |
594 | pim_inet4_dump( | |
595 | "<src?>", ij->source_addr, | |
596 | source_str, sizeof(source_str)); | |
597 | zlog_warn( | |
598 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
599 | __PRETTY_FUNCTION__, group_str, | |
600 | source_str, ifp->name); | |
601 | /* warning only */ | |
602 | } else | |
603 | ij->sock_fd = join_fd; | |
604 | } | |
605 | } | |
606 | } /* igmp */ | |
607 | ||
608 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
609 | ||
610 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
611 | ||
612 | /* Interface has a valid socket ? */ | |
613 | if (pim_ifp->pim_sock_fd < 0) { | |
614 | if (pim_sock_add(ifp)) { | |
615 | zlog_warn( | |
616 | "Failure creating PIM socket for interface %s", | |
617 | ifp->name); | |
618 | } | |
619 | } | |
620 | struct pim_nexthop_cache *pnc = NULL; | |
621 | struct pim_rpf rpf; | |
622 | struct zclient *zclient = NULL; | |
623 | ||
624 | zclient = pim_zebra_zclient_get(); | |
625 | /* RP config might come prior to (local RP's interface) | |
626 | IF UP event. | |
627 | In this case, pnc would not have pim enabled | |
628 | nexthops. | |
629 | Once Interface is UP and pim info is available, | |
630 | reregister | |
631 | with RNH address to receive update and add the | |
632 | interface as nexthop. */ | |
633 | memset(&rpf, 0, sizeof(struct pim_rpf)); | |
634 | rpf.rpf_addr.family = AF_INET; | |
635 | rpf.rpf_addr.prefixlen = IPV4_MAX_BITLEN; | |
636 | rpf.rpf_addr.u.prefix4 = ifc->address->u.prefix4; | |
d0a4f55d | 637 | pnc = pim_nexthop_cache_find(pim_ifp->pim, &rpf); |
d62a17ae | 638 | if (pnc) |
64c86530 | 639 | pim_sendmsg_zebra_rnh(pim_ifp->pim, zclient, |
cf663ceb | 640 | pnc, |
d62a17ae | 641 | ZEBRA_NEXTHOP_REGISTER); |
642 | } | |
643 | } /* pim */ | |
644 | ||
645 | /* | |
646 | PIM or IGMP is enabled on interface, and there is at least one | |
647 | address assigned, then try to create a vif_index. | |
648 | */ | |
649 | if (pim_ifp->mroute_vif_index < 0) { | |
650 | pim_if_add_vif(ifp); | |
651 | } | |
652 | pim_ifchannel_scan_forward_start(ifp); | |
12e41d03 DL |
653 | } |
654 | ||
655 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
656 | { | |
d62a17ae | 657 | struct pim_interface *pim_ifp = ifc->ifp->info; |
658 | struct igmp_sock *igmp; | |
659 | struct in_addr ifaddr; | |
660 | ||
661 | if (ifc->address->family != AF_INET) { | |
662 | /* non-IPv4 address */ | |
663 | return; | |
664 | } | |
665 | ||
666 | if (!pim_ifp) { | |
667 | /* IGMP not enabled on interface */ | |
668 | return; | |
669 | } | |
670 | ||
671 | ifaddr = ifc->address->u.prefix4; | |
672 | ||
673 | /* lookup IGMP socket */ | |
674 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, ifaddr); | |
675 | if (igmp) { | |
676 | /* if addr found, del IGMP socket */ | |
677 | igmp_sock_delete(igmp); | |
678 | } | |
12e41d03 DL |
679 | } |
680 | ||
681 | static void pim_if_addr_del_pim(struct connected *ifc) | |
682 | { | |
d62a17ae | 683 | struct pim_interface *pim_ifp = ifc->ifp->info; |
12e41d03 | 684 | |
d62a17ae | 685 | if (ifc->address->family != AF_INET) { |
686 | /* non-IPv4 address */ | |
687 | return; | |
688 | } | |
12e41d03 | 689 | |
d62a17ae | 690 | if (!pim_ifp) { |
691 | /* PIM not enabled on interface */ | |
692 | return; | |
693 | } | |
694 | ||
695 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
696 | /* Interface keeps a valid primary address */ | |
697 | return; | |
698 | } | |
12e41d03 | 699 | |
d62a17ae | 700 | if (pim_ifp->pim_sock_fd < 0) { |
701 | /* Interface does not hold a valid socket any longer */ | |
702 | return; | |
703 | } | |
294b6d72 | 704 | |
d62a17ae | 705 | /* |
706 | pim_sock_delete() closes the socket, stops read and timer threads, | |
707 | and kills all neighbors. | |
708 | */ | |
709 | pim_sock_delete(ifc->ifp, | |
710 | "last address has been removed from interface"); | |
711 | } | |
12e41d03 | 712 | |
d62a17ae | 713 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) |
714 | { | |
715 | struct interface *ifp; | |
716 | ||
717 | zassert(ifc); | |
718 | ifp = ifc->ifp; | |
719 | zassert(ifp); | |
720 | ||
d62a17ae | 721 | if (PIM_DEBUG_ZEBRA) { |
722 | char buf[BUFSIZ]; | |
723 | prefix2str(ifc->address, buf, BUFSIZ); | |
724 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
725 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
726 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
727 | ? "secondary" | |
728 | : "primary"); | |
729 | } | |
12e41d03 | 730 | |
d62a17ae | 731 | detect_address_change(ifp, force_prim_as_any, __PRETTY_FUNCTION__); |
732 | ||
733 | pim_if_addr_del_igmp(ifc); | |
734 | pim_if_addr_del_pim(ifc); | |
12e41d03 DL |
735 | } |
736 | ||
737 | void pim_if_addr_add_all(struct interface *ifp) | |
738 | { | |
d62a17ae | 739 | struct connected *ifc; |
740 | struct listnode *node; | |
741 | struct listnode *nextnode; | |
742 | int v4_addrs = 0; | |
743 | int v6_addrs = 0; | |
744 | struct pim_interface *pim_ifp = ifp->info; | |
745 | ||
746 | ||
747 | /* PIM/IGMP enabled ? */ | |
748 | if (!pim_ifp) | |
749 | return; | |
750 | ||
751 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
752 | struct prefix *p = ifc->address; | |
753 | ||
754 | if (p->family != AF_INET) | |
755 | v6_addrs++; | |
756 | else | |
757 | v4_addrs++; | |
758 | pim_if_addr_add(ifc); | |
759 | } | |
d8424057 | 760 | |
d62a17ae | 761 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { |
762 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
763 | ||
764 | /* Interface has a valid primary address ? */ | |
765 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
766 | ||
767 | /* Interface has a valid socket ? */ | |
768 | if (pim_ifp->pim_sock_fd < 0) { | |
769 | if (pim_sock_add(ifp)) { | |
770 | zlog_warn( | |
771 | "Failure creating PIM socket for interface %s", | |
772 | ifp->name); | |
773 | } | |
774 | } | |
775 | } | |
776 | } /* pim */ | |
777 | } | |
778 | /* | |
779 | * PIM or IGMP is enabled on interface, and there is at least one | |
780 | * address assigned, then try to create a vif_index. | |
781 | */ | |
782 | if (pim_ifp->mroute_vif_index < 0) { | |
783 | pim_if_add_vif(ifp); | |
784 | } | |
785 | pim_ifchannel_scan_forward_start(ifp); | |
786 | ||
fec883d9 | 787 | pim_rp_setup(pim_ifp->pim); |
d62a17ae | 788 | pim_rp_check_on_if_add(pim_ifp); |
12e41d03 DL |
789 | } |
790 | ||
791 | void pim_if_addr_del_all(struct interface *ifp) | |
792 | { | |
d62a17ae | 793 | struct connected *ifc; |
794 | struct listnode *node; | |
795 | struct listnode *nextnode; | |
5ec5d976 DS |
796 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
797 | struct pim_instance *pim = vrf->info; | |
d62a17ae | 798 | |
799 | /* PIM/IGMP enabled ? */ | |
800 | if (!ifp->info) | |
801 | return; | |
12e41d03 | 802 | |
d62a17ae | 803 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { |
804 | struct prefix *p = ifc->address; | |
12e41d03 | 805 | |
d62a17ae | 806 | if (p->family != AF_INET) |
807 | continue; | |
12e41d03 | 808 | |
d62a17ae | 809 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); |
810 | } | |
da3dcffb | 811 | |
5ec5d976 DS |
812 | pim_rp_setup(pim); |
813 | pim_i_am_rp_re_evaluate(pim); | |
12e41d03 DL |
814 | } |
815 | ||
816 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
817 | { | |
d62a17ae | 818 | struct connected *ifc; |
819 | struct listnode *node; | |
820 | struct listnode *nextnode; | |
821 | ||
822 | /* PIM/IGMP enabled ? */ | |
823 | if (!ifp->info) | |
824 | return; | |
825 | ||
826 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
827 | struct prefix *p = ifc->address; | |
828 | ||
829 | if (p->family != AF_INET) | |
830 | continue; | |
831 | ||
832 | pim_if_addr_del_igmp(ifc); | |
833 | } | |
12e41d03 DL |
834 | } |
835 | ||
836 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
837 | { | |
d62a17ae | 838 | struct connected *ifc; |
839 | struct listnode *node; | |
840 | struct listnode *nextnode; | |
841 | ||
842 | /* PIM/IGMP enabled ? */ | |
843 | if (!ifp->info) | |
844 | return; | |
845 | ||
846 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
847 | struct prefix *p = ifc->address; | |
848 | ||
849 | if (p->family != AF_INET) | |
850 | continue; | |
851 | ||
852 | pim_if_addr_del_pim(ifc); | |
853 | } | |
12e41d03 DL |
854 | } |
855 | ||
d62a17ae | 856 | struct in_addr pim_find_primary_addr(struct interface *ifp) |
12e41d03 | 857 | { |
d62a17ae | 858 | struct connected *ifc; |
859 | struct listnode *node; | |
860 | struct in_addr addr; | |
861 | int v4_addrs = 0; | |
862 | int v6_addrs = 0; | |
863 | struct pim_interface *pim_ifp = ifp->info; | |
896b2044 | 864 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
d62a17ae | 865 | |
866 | if (pim_ifp && PIM_INADDR_ISNOT_ANY(pim_ifp->update_source)) { | |
867 | return pim_ifp->update_source; | |
868 | } | |
869 | ||
870 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
871 | struct prefix *p = ifc->address; | |
872 | ||
873 | if (p->family != AF_INET) { | |
874 | v6_addrs++; | |
875 | continue; | |
876 | } | |
877 | ||
878 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
879 | zlog_warn( | |
880 | "%s: null IPv4 address connected to interface %s", | |
881 | __PRETTY_FUNCTION__, ifp->name); | |
882 | continue; | |
883 | } | |
884 | ||
885 | v4_addrs++; | |
886 | ||
887 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) | |
888 | continue; | |
889 | ||
890 | return p->u.prefix4; | |
891 | } | |
892 | ||
893 | /* | |
894 | * If we have no v4_addrs and v6 is configured | |
895 | * We probably are using unnumbered | |
896 | * So let's grab the loopbacks v4 address | |
897 | * and use that as the primary address | |
898 | */ | |
899 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { | |
900 | struct interface *lo_ifp; | |
fec883d9 | 901 | // DBS - Come back and check here |
896b2044 DS |
902 | if (ifp->vrf_id == VRF_DEFAULT) |
903 | lo_ifp = if_lookup_by_name("lo", vrf->vrf_id); | |
904 | else | |
905 | lo_ifp = if_lookup_by_name(vrf->name, vrf->vrf_id); | |
906 | ||
d62a17ae | 907 | if (lo_ifp) |
908 | return pim_find_primary_addr(lo_ifp); | |
909 | } | |
910 | ||
911 | addr.s_addr = PIM_NET_INADDR_ANY; | |
912 | ||
913 | return addr; | |
12e41d03 DL |
914 | } |
915 | ||
d62a17ae | 916 | static int pim_iface_next_vif_index(struct interface *ifp) |
744d91b3 | 917 | { |
f88df3a6 DS |
918 | struct pim_interface *pim_ifp = ifp->info; |
919 | struct pim_instance *pim = pim_ifp->pim; | |
d62a17ae | 920 | int i; |
f88df3a6 | 921 | |
d62a17ae | 922 | /* |
923 | * The pimreg vif is always going to be in index 0 | |
924 | * of the table. | |
925 | */ | |
926 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
927 | return 0; | |
928 | ||
929 | for (i = 1; i < MAXVIFS; i++) { | |
f88df3a6 | 930 | if (pim->iface_vif_index[i] == 0) |
d62a17ae | 931 | return i; |
932 | } | |
933 | return MAXVIFS; | |
744d91b3 DS |
934 | } |
935 | ||
12e41d03 DL |
936 | /* |
937 | pim_if_add_vif() uses ifindex as vif_index | |
938 | ||
939 | see also pim_if_find_vifindex_by_ifindex() | |
940 | */ | |
941 | int pim_if_add_vif(struct interface *ifp) | |
942 | { | |
d62a17ae | 943 | struct pim_interface *pim_ifp = ifp->info; |
944 | struct in_addr ifaddr; | |
945 | unsigned char flags = 0; | |
946 | ||
947 | zassert(pim_ifp); | |
948 | ||
949 | if (pim_ifp->mroute_vif_index > 0) { | |
950 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
951 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
952 | ifp->name, ifp->ifindex); | |
953 | return -1; | |
954 | } | |
955 | ||
956 | if (ifp->ifindex < 0) { | |
957 | zlog_warn("%s: ifindex=%d < 1 on interface %s", | |
958 | __PRETTY_FUNCTION__, ifp->ifindex, ifp->name); | |
959 | return -2; | |
960 | } | |
961 | ||
962 | ifaddr = pim_ifp->primary_address; | |
963 | if (ifp->ifindex != PIM_OIF_PIM_REGISTER_VIF | |
964 | && PIM_INADDR_IS_ANY(ifaddr)) { | |
965 | zlog_warn( | |
966 | "%s: could not get address for interface %s ifindex=%d", | |
967 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex); | |
968 | return -4; | |
969 | } | |
970 | ||
971 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index(ifp); | |
972 | ||
973 | if (pim_ifp->mroute_vif_index >= MAXVIFS) { | |
974 | zlog_warn( | |
975 | "%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
976 | __PRETTY_FUNCTION__, MAXVIFS, ifp->name); | |
977 | return -3; | |
978 | } | |
979 | ||
980 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
981 | flags = VIFF_REGISTER; | |
b3f2bf7c | 982 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 983 | else |
984 | flags = VIFF_USE_IFINDEX; | |
b3f2bf7c RW |
985 | #endif |
986 | ||
d62a17ae | 987 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
988 | /* pim_mroute_add_vif reported error */ | |
989 | return -5; | |
990 | } | |
12e41d03 | 991 | |
f88df3a6 | 992 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 1; |
d62a17ae | 993 | return 0; |
12e41d03 DL |
994 | } |
995 | ||
12e41d03 DL |
996 | int pim_if_del_vif(struct interface *ifp) |
997 | { | |
d62a17ae | 998 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 999 | |
d62a17ae | 1000 | if (pim_ifp->mroute_vif_index < 1) { |
1001 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
1002 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
1003 | ifp->name, ifp->ifindex); | |
1004 | return -1; | |
1005 | } | |
12e41d03 | 1006 | |
ea3d967b | 1007 | pim_mroute_del_vif(ifp); |
12e41d03 | 1008 | |
d62a17ae | 1009 | /* |
1010 | Update vif_index | |
1011 | */ | |
f88df3a6 | 1012 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 0; |
12e41d03 | 1013 | |
d62a17ae | 1014 | pim_ifp->mroute_vif_index = -1; |
12e41d03 | 1015 | |
d62a17ae | 1016 | return 0; |
12e41d03 DL |
1017 | } |
1018 | ||
da82728d | 1019 | // DBS - VRF Revist |
7cfc7bcf DS |
1020 | struct interface *pim_if_find_by_vif_index(struct pim_instance *pim, |
1021 | ifindex_t vif_index) | |
12e41d03 | 1022 | { |
d62a17ae | 1023 | struct listnode *ifnode; |
1024 | struct interface *ifp; | |
12e41d03 | 1025 | |
7cfc7bcf DS |
1026 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(pim->vrf_id), ifnode, ifp)) { |
1027 | if (ifp->info) { | |
1028 | struct pim_interface *pim_ifp; | |
1029 | pim_ifp = ifp->info; | |
b892f1dd | 1030 | |
7cfc7bcf DS |
1031 | if (vif_index == pim_ifp->mroute_vif_index) |
1032 | return ifp; | |
d62a17ae | 1033 | } |
1034 | } | |
12e41d03 | 1035 | |
d62a17ae | 1036 | return 0; |
12e41d03 DL |
1037 | } |
1038 | ||
1039 | /* | |
1040 | pim_if_add_vif() uses ifindex as vif_index | |
1041 | */ | |
7cfc7bcf | 1042 | int pim_if_find_vifindex_by_ifindex(struct pim_instance *pim, ifindex_t ifindex) |
12e41d03 | 1043 | { |
d62a17ae | 1044 | struct pim_interface *pim_ifp; |
1045 | struct interface *ifp; | |
ae90dfbb | 1046 | |
7cfc7bcf | 1047 | ifp = if_lookup_by_index(ifindex, pim->vrf_id); |
d62a17ae | 1048 | if (!ifp || !ifp->info) |
1049 | return -1; | |
1050 | pim_ifp = ifp->info; | |
ae90dfbb | 1051 | |
d62a17ae | 1052 | return pim_ifp->mroute_vif_index; |
12e41d03 DL |
1053 | } |
1054 | ||
1055 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
1056 | { | |
d62a17ae | 1057 | struct pim_interface *pim_ifp; |
12e41d03 | 1058 | |
d62a17ae | 1059 | pim_ifp = ifp->info; |
1060 | zassert(pim_ifp); | |
1061 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
12e41d03 | 1062 | |
d62a17ae | 1063 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; |
12e41d03 DL |
1064 | } |
1065 | ||
1066 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
1067 | { | |
d62a17ae | 1068 | if (pim_if_lan_delay_enabled(ifp)) { |
1069 | struct pim_interface *pim_ifp; | |
1070 | pim_ifp = ifp->info; | |
1071 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
1072 | } else { | |
1073 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
1074 | } | |
12e41d03 DL |
1075 | } |
1076 | ||
1077 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
1078 | { | |
d62a17ae | 1079 | if (pim_if_lan_delay_enabled(ifp)) { |
1080 | struct pim_interface *pim_ifp; | |
1081 | pim_ifp = ifp->info; | |
1082 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
1083 | } else { | |
1084 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
1085 | } | |
12e41d03 DL |
1086 | } |
1087 | ||
1088 | int pim_if_t_override_msec(struct interface *ifp) | |
1089 | { | |
d62a17ae | 1090 | int effective_override_interval_msec; |
1091 | int t_override_msec; | |
12e41d03 | 1092 | |
d62a17ae | 1093 | effective_override_interval_msec = |
1094 | pim_if_effective_override_interval_msec(ifp); | |
12e41d03 | 1095 | |
d62a17ae | 1096 | t_override_msec = random() % (effective_override_interval_msec + 1); |
12e41d03 | 1097 | |
d62a17ae | 1098 | return t_override_msec; |
12e41d03 DL |
1099 | } |
1100 | ||
1101 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
1102 | { | |
d62a17ae | 1103 | return pim_if_effective_propagation_delay_msec(ifp) |
1104 | + pim_if_effective_override_interval_msec(ifp); | |
12e41d03 DL |
1105 | } |
1106 | ||
1107 | /* | |
1108 | RFC 4601: 4.1.6. State Summarization Macros | |
1109 | ||
1110 | The function NBR( I, A ) uses information gathered through PIM Hello | |
1111 | messages to map the IP address A of a directly connected PIM | |
1112 | neighbor router on interface I to the primary IP address of the same | |
1113 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
1114 | address that it uses as the source of its PIM Hello messages. | |
1115 | */ | |
1116 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
1117 | struct in_addr addr) | |
1118 | { | |
d62a17ae | 1119 | struct listnode *neighnode; |
1120 | struct pim_neighbor *neigh; | |
1121 | struct pim_interface *pim_ifp; | |
1122 | struct prefix p; | |
1123 | ||
1124 | zassert(ifp); | |
1125 | ||
1126 | pim_ifp = ifp->info; | |
1127 | if (!pim_ifp) { | |
1128 | zlog_warn("%s: multicast not enabled on interface %s", | |
1129 | __PRETTY_FUNCTION__, ifp->name); | |
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | p.family = AF_INET; | |
1134 | p.u.prefix4 = addr; | |
1135 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
1136 | ||
1137 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, | |
1138 | neigh)) { | |
1139 | ||
1140 | /* primary address ? */ | |
1141 | if (neigh->source_addr.s_addr == addr.s_addr) | |
1142 | return neigh; | |
1143 | ||
1144 | /* secondary address ? */ | |
1145 | if (pim_neighbor_find_secondary(neigh, &p)) | |
1146 | return neigh; | |
1147 | } | |
1148 | ||
1149 | if (PIM_DEBUG_PIM_TRACE) { | |
1150 | char addr_str[INET_ADDRSTRLEN]; | |
1151 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); | |
1152 | zlog_debug( | |
1153 | "%s: neighbor not found for address %s on interface %s", | |
1154 | __PRETTY_FUNCTION__, addr_str, ifp->name); | |
1155 | } | |
1156 | ||
1157 | return NULL; | |
12e41d03 DL |
1158 | } |
1159 | ||
1160 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
1161 | { | |
d62a17ae | 1162 | struct pim_interface *pim_ifp; |
1163 | long t_suppressed_msec; | |
1164 | uint32_t ramount = 0; | |
12e41d03 | 1165 | |
d62a17ae | 1166 | pim_ifp = ifp->info; |
1167 | zassert(pim_ifp); | |
12e41d03 | 1168 | |
d62a17ae | 1169 | /* join suppression disabled ? */ |
1170 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
1171 | return 0; | |
12e41d03 | 1172 | |
d62a17ae | 1173 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ |
1174 | ramount = 1100 + (random() % (1400 - 1100 + 1)); | |
1175 | t_suppressed_msec = qpim_t_periodic * ramount; | |
12e41d03 | 1176 | |
d62a17ae | 1177 | return t_suppressed_msec; |
12e41d03 DL |
1178 | } |
1179 | ||
1180 | static void igmp_join_free(struct igmp_join *ij) | |
1181 | { | |
d62a17ae | 1182 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); |
12e41d03 DL |
1183 | } |
1184 | ||
1185 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
1186 | struct in_addr group_addr, | |
1187 | struct in_addr source_addr) | |
1188 | { | |
d62a17ae | 1189 | struct listnode *node; |
1190 | struct igmp_join *ij; | |
12e41d03 | 1191 | |
d62a17ae | 1192 | zassert(join_list); |
12e41d03 | 1193 | |
d62a17ae | 1194 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { |
1195 | if ((group_addr.s_addr == ij->group_addr.s_addr) | |
1196 | && (source_addr.s_addr == ij->source_addr.s_addr)) | |
1197 | return ij; | |
1198 | } | |
12e41d03 | 1199 | |
d62a17ae | 1200 | return 0; |
12e41d03 DL |
1201 | } |
1202 | ||
d62a17ae | 1203 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
1204 | struct in_addr group_addr, struct in_addr source_addr) | |
12e41d03 | 1205 | { |
d62a17ae | 1206 | int join_fd; |
12e41d03 | 1207 | |
d62a17ae | 1208 | join_fd = pim_socket_raw(IPPROTO_IGMP); |
1209 | if (join_fd < 0) { | |
1210 | return -1; | |
1211 | } | |
12e41d03 | 1212 | |
d62a17ae | 1213 | if (pim_socket_join_source(join_fd, ifindex, group_addr, source_addr, |
1214 | ifname)) { | |
1215 | close(join_fd); | |
1216 | return -2; | |
1217 | } | |
12e41d03 | 1218 | |
d62a17ae | 1219 | return join_fd; |
12e41d03 DL |
1220 | } |
1221 | ||
1222 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1223 | struct in_addr group_addr, | |
1224 | struct in_addr source_addr) | |
1225 | { | |
d62a17ae | 1226 | struct pim_interface *pim_ifp; |
1227 | struct igmp_join *ij; | |
1228 | int join_fd; | |
1229 | ||
1230 | pim_ifp = ifp->info; | |
1231 | zassert(pim_ifp); | |
1232 | ||
1233 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, | |
1234 | source_addr); | |
1235 | if (join_fd < 0) { | |
1236 | char group_str[INET_ADDRSTRLEN]; | |
1237 | char source_str[INET_ADDRSTRLEN]; | |
1238 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1239 | sizeof(group_str)); | |
1240 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1241 | sizeof(source_str)); | |
1242 | zlog_warn( | |
1243 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
1244 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); | |
1249 | if (!ij) { | |
1250 | char group_str[INET_ADDRSTRLEN]; | |
1251 | char source_str[INET_ADDRSTRLEN]; | |
1252 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1253 | sizeof(group_str)); | |
1254 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1255 | sizeof(source_str)); | |
1256 | zlog_err( | |
1257 | "%s: XCALLOC(%zu) failure for IGMP group %s source %s on interface %s", | |
1258 | __PRETTY_FUNCTION__, sizeof(*ij), group_str, source_str, | |
1259 | ifp->name); | |
1260 | close(join_fd); | |
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | ij->sock_fd = join_fd; | |
1265 | ij->group_addr = group_addr; | |
1266 | ij->source_addr = source_addr; | |
1267 | ij->sock_creation = pim_time_monotonic_sec(); | |
1268 | ||
1269 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1270 | ||
1271 | return ij; | |
12e41d03 DL |
1272 | } |
1273 | ||
37664928 | 1274 | ferr_r pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1275 | struct in_addr source_addr) |
1276 | { | |
d62a17ae | 1277 | struct pim_interface *pim_ifp; |
1278 | struct igmp_join *ij; | |
1279 | ||
1280 | pim_ifp = ifp->info; | |
1281 | if (!pim_ifp) { | |
37664928 DS |
1282 | return ferr_cfg_invalid("multicast not enabled on interface %s", |
1283 | ifp->name); | |
d62a17ae | 1284 | } |
1285 | ||
1286 | if (!pim_ifp->igmp_join_list) { | |
1287 | pim_ifp->igmp_join_list = list_new(); | |
1288 | if (!pim_ifp->igmp_join_list) { | |
37664928 | 1289 | return ferr_cfg_invalid("Insufficient memory"); |
d62a17ae | 1290 | } |
1291 | pim_ifp->igmp_join_list->del = (void (*)(void *))igmp_join_free; | |
1292 | } | |
1293 | ||
1294 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
53d829f5 DW |
1295 | |
1296 | /* This interface has already been configured to join this IGMP group | |
1297 | */ | |
d62a17ae | 1298 | if (ij) { |
53d829f5 | 1299 | return ferr_ok(); |
d62a17ae | 1300 | } |
1301 | ||
1302 | ij = igmp_join_new(ifp, group_addr, source_addr); | |
1303 | if (!ij) { | |
37664928 DS |
1304 | return ferr_cfg_invalid( |
1305 | "Failure to create new join data structure, see log file for more information"); | |
d62a17ae | 1306 | } |
1307 | ||
1308 | if (PIM_DEBUG_IGMP_EVENTS) { | |
1309 | char group_str[INET_ADDRSTRLEN]; | |
1310 | char source_str[INET_ADDRSTRLEN]; | |
1311 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1312 | sizeof(group_str)); | |
1313 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1314 | sizeof(source_str)); | |
1315 | zlog_debug( | |
1316 | "%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
1317 | __PRETTY_FUNCTION__, source_str, group_str, ifp->name); | |
1318 | } | |
12e41d03 | 1319 | |
37664928 | 1320 | return ferr_ok(); |
d62a17ae | 1321 | } |
12e41d03 DL |
1322 | |
1323 | ||
d62a17ae | 1324 | int pim_if_igmp_join_del(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1325 | struct in_addr source_addr) |
1326 | { | |
d62a17ae | 1327 | struct pim_interface *pim_ifp; |
1328 | struct igmp_join *ij; | |
1329 | ||
1330 | pim_ifp = ifp->info; | |
1331 | if (!pim_ifp) { | |
1332 | zlog_warn("%s: multicast not enabled on interface %s", | |
1333 | __PRETTY_FUNCTION__, ifp->name); | |
1334 | return -1; | |
1335 | } | |
1336 | ||
1337 | if (!pim_ifp->igmp_join_list) { | |
1338 | zlog_warn("%s: no IGMP join on interface %s", | |
1339 | __PRETTY_FUNCTION__, ifp->name); | |
1340 | return -2; | |
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: could not find IGMP group %s source %s on interface %s", | |
1353 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1354 | return -3; | |
1355 | } | |
1356 | ||
1357 | if (close(ij->sock_fd)) { | |
1358 | char group_str[INET_ADDRSTRLEN]; | |
1359 | char source_str[INET_ADDRSTRLEN]; | |
1360 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1361 | sizeof(group_str)); | |
1362 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1363 | sizeof(source_str)); | |
1364 | zlog_warn( | |
1365 | "%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
1366 | __PRETTY_FUNCTION__, ij->sock_fd, group_str, source_str, | |
1367 | ifp->name, errno, safe_strerror(errno)); | |
1368 | /* warning only */ | |
1369 | } | |
1370 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1371 | igmp_join_free(ij); | |
1372 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
1373 | list_delete(pim_ifp->igmp_join_list); | |
1374 | pim_ifp->igmp_join_list = 0; | |
1375 | } | |
1376 | ||
1377 | return 0; | |
12e41d03 DL |
1378 | } |
1379 | ||
1380 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1381 | { | |
d62a17ae | 1382 | struct pim_interface *pim_ifp; |
1383 | struct listnode *node; | |
1384 | struct listnode *nextnode; | |
1385 | struct igmp_join *ij; | |
1386 | ||
1387 | pim_ifp = ifp->info; | |
1388 | if (!pim_ifp) { | |
1389 | zlog_warn("%s: multicast not enabled on interface %s", | |
1390 | __PRETTY_FUNCTION__, ifp->name); | |
1391 | return; | |
1392 | } | |
1393 | ||
1394 | if (!pim_ifp->igmp_join_list) | |
1395 | return; | |
1396 | ||
1397 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1398 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
12e41d03 DL |
1399 | } |
1400 | ||
1401 | /* | |
1402 | RFC 4601 | |
1403 | ||
1404 | Transitions from "I am Assert Loser" State | |
1405 | ||
1406 | Current Winner's GenID Changes or NLT Expires | |
1407 | ||
1408 | The Neighbor Liveness Timer associated with the current winner | |
1409 | expires or we receive a Hello message from the current winner | |
1410 | reporting a different GenID from the one it previously reported. | |
1411 | This indicates that the current winner's interface or router has | |
1412 | gone down (and may have come back up), and so we must assume it no | |
1413 | longer knows it was the winner. | |
1414 | */ | |
1415 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1416 | struct in_addr neigh_addr) | |
1417 | { | |
d62a17ae | 1418 | struct pim_interface *pim_ifp; |
d62a17ae | 1419 | struct pim_ifchannel *ch; |
1420 | ||
1421 | pim_ifp = ifp->info; | |
1422 | zassert(pim_ifp); | |
1423 | ||
a2addae8 | 1424 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1425 | /* Is (S,G,I) assert loser ? */ |
1426 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1427 | continue; | |
1428 | /* Dead neighbor was winner ? */ | |
1429 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1430 | continue; | |
1431 | ||
1432 | assert_action_a5(ch); | |
1433 | } | |
12e41d03 DL |
1434 | } |
1435 | ||
1436 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1437 | { | |
d62a17ae | 1438 | struct pim_ifchannel *ch; |
12e41d03 | 1439 | |
d62a17ae | 1440 | /* clear off flag from interface's upstreams */ |
a2addae8 | 1441 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1442 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED( |
1443 | ch->upstream->flags); | |
1444 | } | |
12e41d03 | 1445 | |
d62a17ae | 1446 | /* scan per-interface (S,G,I) state on this I interface */ |
a2addae8 | 1447 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1448 | struct pim_upstream *up = ch->upstream; |
12e41d03 | 1449 | |
d62a17ae | 1450 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) |
1451 | continue; | |
12e41d03 | 1452 | |
d62a17ae | 1453 | /* update join_desired for the global (S,G) state */ |
9b29ea95 | 1454 | pim_upstream_update_join_desired(pim_ifp->pim, up); |
d62a17ae | 1455 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); |
1456 | } | |
12e41d03 DL |
1457 | } |
1458 | ||
1459 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1460 | { | |
d62a17ae | 1461 | struct pim_interface *pim_ifp; |
d62a17ae | 1462 | struct pim_ifchannel *ch; |
1463 | ||
1464 | pim_ifp = ifp->info; | |
1465 | if (!pim_ifp) | |
1466 | return; | |
1467 | ||
a2addae8 | 1468 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1469 | pim_ifchannel_update_assert_tracking_desired(ch); |
1470 | } | |
12e41d03 | 1471 | } |
c992c9a0 DS |
1472 | |
1473 | /* | |
1474 | * PIM wants to have an interface pointer for everything it does. | |
1475 | * The pimreg is a special interface that we have that is not | |
1476 | * quite an inteface but a VIF is created for it. | |
1477 | */ | |
43e40fdf | 1478 | void pim_if_create_pimreg(struct pim_instance *pim) |
c992c9a0 | 1479 | { |
afa2b179 | 1480 | char pimreg_name[100]; |
c992c9a0 | 1481 | |
43e40fdf | 1482 | if (!pim->regiface) { |
afa2b179 DS |
1483 | if (pim->vrf_id == VRF_DEFAULT) |
1484 | strcpy(pimreg_name, "pimreg"); | |
1485 | else | |
1486 | sprintf(pimreg_name, "pimreg%d", | |
1487 | pim->vrf->data.l.table_id); | |
1488 | ||
1489 | pim->regiface = if_create(pimreg_name, strlen(pimreg_name), | |
1490 | pim->vrf_id); | |
43e40fdf DS |
1491 | pim->regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; |
1492 | ||
1493 | pim_if_new(pim->regiface, 0, 0); | |
d62a17ae | 1494 | } |
c992c9a0 | 1495 | } |
3565202d | 1496 | |
d62a17ae | 1497 | int pim_if_connected_to_source(struct interface *ifp, struct in_addr src) |
3565202d | 1498 | { |
d62a17ae | 1499 | struct listnode *cnode; |
1500 | struct connected *c; | |
1501 | struct prefix p; | |
1502 | ||
1503 | if (!ifp) | |
1504 | return 0; | |
1505 | ||
1506 | p.family = AF_INET; | |
1507 | p.u.prefix4 = src; | |
1508 | p.prefixlen = IPV4_MAX_BITLEN; | |
1509 | ||
1510 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
1511 | if ((c->address->family == AF_INET) | |
1512 | && prefix_match(CONNECTED_PREFIX(c), &p)) { | |
1513 | return 1; | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | return 0; | |
3565202d | 1518 | } |
11699c47 DS |
1519 | |
1520 | int pim_if_is_loopback(struct pim_instance *pim, struct interface *ifp) | |
1521 | { | |
1522 | if (if_is_loopback(ifp)) | |
1523 | return 1; | |
1524 | ||
1525 | if (strcmp(ifp->name, pim->vrf->name) == 0) | |
1526 | return 1; | |
1527 | ||
1528 | return 0; | |
1529 | } | |
90133de6 DS |
1530 | |
1531 | int pim_if_is_vrf_device(struct interface *ifp) | |
1532 | { | |
1533 | struct vrf *vrf; | |
1534 | ||
a2addae8 | 1535 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
90133de6 DS |
1536 | if (strncmp(ifp->name, vrf->name, strlen(ifp->name)) == 0) |
1537 | return 1; | |
1538 | } | |
1539 | ||
1540 | return 0; | |
1541 | } | |
ad7b74c4 DS |
1542 | |
1543 | int pim_if_ifchannel_count(struct pim_interface *pim_ifp) | |
1544 | { | |
1545 | struct pim_ifchannel *ch; | |
1546 | int count = 0; | |
1547 | ||
a2addae8 | 1548 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
ad7b74c4 DS |
1549 | count++; |
1550 | } | |
1551 | ||
1552 | return count; | |
1553 | } |