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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) |
affe9e99 | 74 | list_delete_and_null(&pim_ifp->igmp_join_list); |
ea4a71fc | 75 | |
f09eaf1c | 76 | if (pim_ifp->igmp_socket_list) |
affe9e99 | 77 | list_delete_and_null(&pim_ifp->igmp_socket_list); |
ea4a71fc | 78 | |
f09eaf1c | 79 | if (pim_ifp->pim_neighbor_list) |
affe9e99 | 80 | list_delete_and_null(&pim_ifp->pim_neighbor_list); |
ea4a71fc | 81 | |
d62a17ae | 82 | if (pim_ifp->upstream_switch_list) |
affe9e99 | 83 | list_delete_and_null(&pim_ifp->upstream_switch_list); |
982bff89 | 84 | |
69ccd63e | 85 | if (pim_ifp->sec_addr_list) |
affe9e99 | 86 | list_delete_and_null(&pim_ifp->sec_addr_list); |
69ccd63e | 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 | |
affe9e99 DS |
244 | list_delete_and_null(&pim_ifp->igmp_socket_list); |
245 | list_delete_and_null(&pim_ifp->pim_neighbor_list); | |
246 | list_delete_and_null(&pim_ifp->upstream_switch_list); | |
247 | list_delete_and_null(&pim_ifp->sec_addr_list); | |
12e41d03 | 248 | |
b0f525a8 QY |
249 | if (pim_ifp->boundary_oil_plist) |
250 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp->boundary_oil_plist); | |
251 | ||
ad7b74c4 DS |
252 | while ((ch = RB_ROOT(pim_ifchannel_rb, |
253 | &pim_ifp->ifchannel_rb)) != NULL) | |
254 | pim_ifchannel_delete(ch); | |
a625e937 | 255 | |
d62a17ae | 256 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
12e41d03 | 257 | |
d62a17ae | 258 | ifp->info = NULL; |
12e41d03 DL |
259 | } |
260 | ||
261 | void pim_if_update_could_assert(struct interface *ifp) | |
262 | { | |
d62a17ae | 263 | struct pim_interface *pim_ifp; |
d62a17ae | 264 | struct pim_ifchannel *ch; |
12e41d03 | 265 | |
d62a17ae | 266 | pim_ifp = ifp->info; |
267 | zassert(pim_ifp); | |
12e41d03 | 268 | |
a2addae8 | 269 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 270 | pim_ifchannel_update_could_assert(ch); |
271 | } | |
12e41d03 DL |
272 | } |
273 | ||
274 | static void pim_if_update_my_assert_metric(struct interface *ifp) | |
275 | { | |
d62a17ae | 276 | struct pim_interface *pim_ifp; |
d62a17ae | 277 | struct pim_ifchannel *ch; |
12e41d03 | 278 | |
d62a17ae | 279 | pim_ifp = ifp->info; |
280 | zassert(pim_ifp); | |
12e41d03 | 281 | |
a2addae8 | 282 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 283 | pim_ifchannel_update_my_assert_metric(ch); |
284 | } | |
12e41d03 DL |
285 | } |
286 | ||
287 | static void pim_addr_change(struct interface *ifp) | |
288 | { | |
d62a17ae | 289 | struct pim_interface *pim_ifp; |
290 | ||
291 | pim_ifp = ifp->info; | |
292 | zassert(pim_ifp); | |
293 | ||
294 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- | |
295 | Done TODO T30 */ | |
296 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
297 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
298 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
299 | pim_if_update_assert_tracking_desired( | |
300 | ifp); /* depends on DR, join_desired */ | |
301 | ||
302 | /* | |
303 | RFC 4601: 4.3.1. Sending Hello Messages | |
304 | ||
305 | 1) Before an interface goes down or changes primary IP address, a | |
306 | Hello message with a zero HoldTime should be sent immediately | |
307 | (with the old IP address if the IP address changed). | |
308 | -- FIXME See CAVEAT C13 | |
309 | ||
310 | 2) After an interface has changed its IP address, it MUST send a | |
311 | Hello message with its new IP address. | |
312 | -- DONE below | |
313 | ||
314 | 3) If an interface changes one of its secondary IP addresses, a | |
315 | Hello message with an updated Address_List option and a non-zero | |
316 | HoldTime should be sent immediately. | |
317 | -- FIXME See TODO T31 | |
318 | */ | |
319 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
320 | if (pim_ifp->pim_sock_fd < 0) | |
321 | return; | |
322 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
12e41d03 DL |
323 | } |
324 | ||
12e41d03 DL |
325 | static int detect_primary_address_change(struct interface *ifp, |
326 | int force_prim_as_any, | |
327 | const char *caller) | |
328 | { | |
d62a17ae | 329 | struct pim_interface *pim_ifp = ifp->info; |
330 | struct in_addr new_prim_addr; | |
331 | int changed; | |
332 | ||
333 | if (force_prim_as_any) | |
334 | new_prim_addr.s_addr = INADDR_ANY; | |
335 | else | |
336 | new_prim_addr = pim_find_primary_addr(ifp); | |
337 | ||
338 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
339 | ||
340 | if (PIM_DEBUG_ZEBRA) { | |
341 | char new_prim_str[INET_ADDRSTRLEN]; | |
342 | char old_prim_str[INET_ADDRSTRLEN]; | |
343 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, | |
344 | sizeof(new_prim_str)); | |
345 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, | |
346 | sizeof(old_prim_str)); | |
347 | zlog_debug("%s: old=%s new=%s on interface %s: %s", | |
348 | __PRETTY_FUNCTION__, old_prim_str, new_prim_str, | |
349 | ifp->name, changed ? "changed" : "unchanged"); | |
350 | } | |
351 | ||
352 | if (changed) { | |
353 | pim_ifp->primary_address = new_prim_addr; | |
354 | } | |
355 | ||
356 | return changed; | |
12e41d03 DL |
357 | } |
358 | ||
7176984f | 359 | static struct pim_secondary_addr * |
294b6d72 | 360 | pim_sec_addr_find(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 361 | { |
d62a17ae | 362 | struct pim_secondary_addr *sec_addr; |
363 | struct listnode *node; | |
7176984f | 364 | |
d62a17ae | 365 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
366 | if (prefix_cmp(&sec_addr->addr, addr)) { | |
367 | return sec_addr; | |
368 | } | |
369 | } | |
7176984f | 370 | |
d62a17ae | 371 | return NULL; |
7176984f | 372 | } |
373 | ||
374 | static void pim_sec_addr_del(struct pim_interface *pim_ifp, | |
d62a17ae | 375 | struct pim_secondary_addr *sec_addr) |
7176984f | 376 | { |
d62a17ae | 377 | listnode_delete(pim_ifp->sec_addr_list, sec_addr); |
378 | pim_sec_addr_free(sec_addr); | |
7176984f | 379 | } |
380 | ||
294b6d72 | 381 | static int pim_sec_addr_add(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 382 | { |
d62a17ae | 383 | int changed = 0; |
384 | struct pim_secondary_addr *sec_addr; | |
385 | ||
386 | sec_addr = pim_sec_addr_find(pim_ifp, addr); | |
387 | if (sec_addr) { | |
388 | sec_addr->flags &= ~PIM_SEC_ADDRF_STALE; | |
389 | return changed; | |
390 | } | |
391 | ||
d62a17ae | 392 | sec_addr = XCALLOC(MTYPE_PIM_SEC_ADDR, sizeof(*sec_addr)); |
f09eaf1c | 393 | if (!sec_addr) |
d62a17ae | 394 | return changed; |
d62a17ae | 395 | |
396 | changed = 1; | |
397 | sec_addr->addr = *addr; | |
398 | listnode_add_sort(pim_ifp->sec_addr_list, sec_addr); | |
399 | ||
400 | return changed; | |
7176984f | 401 | } |
402 | ||
403 | static int pim_sec_addr_del_all(struct pim_interface *pim_ifp) | |
404 | { | |
d62a17ae | 405 | int changed = 0; |
406 | ||
d62a17ae | 407 | if (!list_isempty(pim_ifp->sec_addr_list)) { |
408 | changed = 1; | |
409 | /* remove all nodes and free up the list itself */ | |
410 | list_delete_all_node(pim_ifp->sec_addr_list); | |
d62a17ae | 411 | } |
412 | ||
413 | return changed; | |
7176984f | 414 | } |
415 | ||
416 | static int pim_sec_addr_update(struct interface *ifp) | |
417 | { | |
d62a17ae | 418 | struct pim_interface *pim_ifp = ifp->info; |
419 | struct connected *ifc; | |
420 | struct listnode *node; | |
421 | struct listnode *nextnode; | |
422 | struct pim_secondary_addr *sec_addr; | |
423 | int changed = 0; | |
424 | ||
f09eaf1c DS |
425 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, |
426 | sec_addr)) { | |
427 | sec_addr->flags |= PIM_SEC_ADDRF_STALE; | |
d62a17ae | 428 | } |
429 | ||
430 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
431 | struct prefix *p = ifc->address; | |
432 | ||
433 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
434 | continue; | |
435 | } | |
436 | ||
437 | if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) { | |
438 | /* don't add the primary address into the secondary | |
439 | * address list */ | |
440 | continue; | |
441 | } | |
442 | ||
443 | if (pim_sec_addr_add(pim_ifp, p)) { | |
444 | changed = 1; | |
445 | } | |
446 | } | |
447 | ||
f09eaf1c DS |
448 | /* Drop stale entries */ |
449 | for (ALL_LIST_ELEMENTS(pim_ifp->sec_addr_list, node, nextnode, | |
450 | sec_addr)) { | |
451 | if (sec_addr->flags & PIM_SEC_ADDRF_STALE) { | |
452 | pim_sec_addr_del(pim_ifp, sec_addr); | |
453 | changed = 1; | |
d62a17ae | 454 | } |
455 | } | |
456 | ||
457 | return changed; | |
7176984f | 458 | } |
459 | ||
4763cd0e | 460 | static int detect_secondary_address_change(struct interface *ifp, |
d62a17ae | 461 | int force_prim_as_any, |
462 | const char *caller) | |
12e41d03 | 463 | { |
d62a17ae | 464 | struct pim_interface *pim_ifp = ifp->info; |
465 | int changed = 0; | |
466 | ||
467 | if (force_prim_as_any) { | |
468 | /* if primary address is being forced to zero just flush the | |
469 | * secondary address list */ | |
470 | changed = pim_sec_addr_del_all(pim_ifp); | |
471 | } else { | |
472 | /* re-evaluate the secondary address list */ | |
473 | changed = pim_sec_addr_update(ifp); | |
474 | } | |
475 | ||
476 | return changed; | |
4763cd0e | 477 | } |
478 | ||
d62a17ae | 479 | static void detect_address_change(struct interface *ifp, int force_prim_as_any, |
480 | const char *caller) | |
4763cd0e | 481 | { |
d62a17ae | 482 | int changed = 0; |
483 | struct pim_interface *pim_ifp; | |
12e41d03 | 484 | |
d62a17ae | 485 | pim_ifp = ifp->info; |
486 | if (!pim_ifp) | |
487 | return; | |
4763cd0e | 488 | |
d62a17ae | 489 | if (detect_primary_address_change(ifp, force_prim_as_any, caller)) { |
490 | changed = 1; | |
491 | } | |
12e41d03 | 492 | |
d62a17ae | 493 | if (detect_secondary_address_change(ifp, force_prim_as_any, caller)) { |
494 | changed = 1; | |
495 | } | |
4763cd0e | 496 | |
497 | ||
d62a17ae | 498 | if (changed) { |
499 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
500 | return; | |
501 | } | |
4763cd0e | 502 | |
d62a17ae | 503 | pim_addr_change(ifp); |
504 | } | |
12e41d03 | 505 | |
d62a17ae | 506 | /* XXX: if we have unnumbered interfaces we need to run detect address |
507 | * address change on all of them when the lo address changes */ | |
12e41d03 DL |
508 | } |
509 | ||
4763cd0e | 510 | int pim_update_source_set(struct interface *ifp, struct in_addr source) |
12e41d03 | 511 | { |
d62a17ae | 512 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 513 | |
d62a17ae | 514 | if (!pim_ifp) { |
515 | return PIM_IFACE_NOT_FOUND; | |
516 | } | |
12e41d03 | 517 | |
d62a17ae | 518 | if (pim_ifp->update_source.s_addr == source.s_addr) { |
519 | return PIM_UPDATE_SOURCE_DUP; | |
520 | } | |
4763cd0e | 521 | |
d62a17ae | 522 | pim_ifp->update_source = source; |
523 | detect_address_change(ifp, 0 /* force_prim_as_any */, | |
524 | __PRETTY_FUNCTION__); | |
4763cd0e | 525 | |
d62a17ae | 526 | return PIM_SUCCESS; |
12e41d03 DL |
527 | } |
528 | ||
529 | void pim_if_addr_add(struct connected *ifc) | |
530 | { | |
d62a17ae | 531 | struct pim_interface *pim_ifp; |
532 | struct interface *ifp; | |
533 | struct in_addr ifaddr; | |
534 | ||
535 | zassert(ifc); | |
536 | ||
537 | ifp = ifc->ifp; | |
538 | zassert(ifp); | |
539 | pim_ifp = ifp->info; | |
540 | if (!pim_ifp) | |
541 | return; | |
542 | ||
543 | if (!if_is_operative(ifp)) | |
544 | return; | |
545 | ||
546 | if (PIM_DEBUG_ZEBRA) { | |
547 | char buf[BUFSIZ]; | |
548 | prefix2str(ifc->address, buf, BUFSIZ); | |
549 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
550 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
551 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
552 | ? "secondary" | |
553 | : "primary"); | |
554 | } | |
555 | ||
556 | ifaddr = ifc->address->u.prefix4; | |
557 | ||
558 | detect_address_change(ifp, 0, __PRETTY_FUNCTION__); | |
559 | ||
2002dcdb DS |
560 | // if (ifc->address->family != AF_INET) |
561 | // return; | |
d62a17ae | 562 | |
563 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { | |
564 | struct igmp_sock *igmp; | |
565 | ||
566 | /* lookup IGMP socket */ | |
567 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
568 | ifaddr); | |
569 | if (!igmp) { | |
570 | /* if addr new, add IGMP socket */ | |
c77a04e4 DS |
571 | if (ifc->address->family == AF_INET) |
572 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, | |
573 | ifaddr, ifp); | |
d62a17ae | 574 | } |
575 | ||
576 | /* Replay Static IGMP groups */ | |
577 | if (pim_ifp->igmp_join_list) { | |
578 | struct listnode *node; | |
579 | struct listnode *nextnode; | |
580 | struct igmp_join *ij; | |
581 | int join_fd; | |
582 | ||
583 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, | |
584 | nextnode, ij)) { | |
585 | /* Close socket and reopen with Source and Group | |
586 | */ | |
587 | close(ij->sock_fd); | |
588 | join_fd = igmp_join_sock( | |
589 | ifp->name, ifp->ifindex, ij->group_addr, | |
590 | ij->source_addr); | |
591 | if (join_fd < 0) { | |
592 | char group_str[INET_ADDRSTRLEN]; | |
593 | char source_str[INET_ADDRSTRLEN]; | |
594 | pim_inet4_dump("<grp?>", ij->group_addr, | |
595 | group_str, | |
596 | sizeof(group_str)); | |
597 | pim_inet4_dump( | |
598 | "<src?>", ij->source_addr, | |
599 | source_str, sizeof(source_str)); | |
600 | zlog_warn( | |
601 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
602 | __PRETTY_FUNCTION__, group_str, | |
603 | source_str, ifp->name); | |
604 | /* warning only */ | |
605 | } else | |
606 | ij->sock_fd = join_fd; | |
607 | } | |
608 | } | |
609 | } /* igmp */ | |
610 | ||
611 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
612 | ||
613 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
614 | ||
615 | /* Interface has a valid socket ? */ | |
616 | if (pim_ifp->pim_sock_fd < 0) { | |
617 | if (pim_sock_add(ifp)) { | |
618 | zlog_warn( | |
619 | "Failure creating PIM socket for interface %s", | |
620 | ifp->name); | |
621 | } | |
622 | } | |
623 | struct pim_nexthop_cache *pnc = NULL; | |
624 | struct pim_rpf rpf; | |
625 | struct zclient *zclient = NULL; | |
626 | ||
627 | zclient = pim_zebra_zclient_get(); | |
628 | /* RP config might come prior to (local RP's interface) | |
629 | IF UP event. | |
630 | In this case, pnc would not have pim enabled | |
631 | nexthops. | |
632 | Once Interface is UP and pim info is available, | |
633 | reregister | |
634 | with RNH address to receive update and add the | |
635 | interface as nexthop. */ | |
636 | memset(&rpf, 0, sizeof(struct pim_rpf)); | |
637 | rpf.rpf_addr.family = AF_INET; | |
638 | rpf.rpf_addr.prefixlen = IPV4_MAX_BITLEN; | |
639 | rpf.rpf_addr.u.prefix4 = ifc->address->u.prefix4; | |
d0a4f55d | 640 | pnc = pim_nexthop_cache_find(pim_ifp->pim, &rpf); |
d62a17ae | 641 | if (pnc) |
64c86530 | 642 | pim_sendmsg_zebra_rnh(pim_ifp->pim, zclient, |
cf663ceb | 643 | pnc, |
d62a17ae | 644 | ZEBRA_NEXTHOP_REGISTER); |
645 | } | |
646 | } /* pim */ | |
647 | ||
648 | /* | |
649 | PIM or IGMP is enabled on interface, and there is at least one | |
650 | address assigned, then try to create a vif_index. | |
651 | */ | |
652 | if (pim_ifp->mroute_vif_index < 0) { | |
653 | pim_if_add_vif(ifp); | |
654 | } | |
655 | pim_ifchannel_scan_forward_start(ifp); | |
12e41d03 DL |
656 | } |
657 | ||
658 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
659 | { | |
d62a17ae | 660 | struct pim_interface *pim_ifp = ifc->ifp->info; |
661 | struct igmp_sock *igmp; | |
662 | struct in_addr ifaddr; | |
663 | ||
664 | if (ifc->address->family != AF_INET) { | |
665 | /* non-IPv4 address */ | |
666 | return; | |
667 | } | |
668 | ||
669 | if (!pim_ifp) { | |
670 | /* IGMP not enabled on interface */ | |
671 | return; | |
672 | } | |
673 | ||
674 | ifaddr = ifc->address->u.prefix4; | |
675 | ||
676 | /* lookup IGMP socket */ | |
677 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, ifaddr); | |
678 | if (igmp) { | |
679 | /* if addr found, del IGMP socket */ | |
680 | igmp_sock_delete(igmp); | |
681 | } | |
12e41d03 DL |
682 | } |
683 | ||
684 | static void pim_if_addr_del_pim(struct connected *ifc) | |
685 | { | |
d62a17ae | 686 | struct pim_interface *pim_ifp = ifc->ifp->info; |
12e41d03 | 687 | |
d62a17ae | 688 | if (ifc->address->family != AF_INET) { |
689 | /* non-IPv4 address */ | |
690 | return; | |
691 | } | |
12e41d03 | 692 | |
d62a17ae | 693 | if (!pim_ifp) { |
694 | /* PIM not enabled on interface */ | |
695 | return; | |
696 | } | |
697 | ||
698 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
699 | /* Interface keeps a valid primary address */ | |
700 | return; | |
701 | } | |
12e41d03 | 702 | |
d62a17ae | 703 | if (pim_ifp->pim_sock_fd < 0) { |
704 | /* Interface does not hold a valid socket any longer */ | |
705 | return; | |
706 | } | |
294b6d72 | 707 | |
d62a17ae | 708 | /* |
709 | pim_sock_delete() closes the socket, stops read and timer threads, | |
710 | and kills all neighbors. | |
711 | */ | |
712 | pim_sock_delete(ifc->ifp, | |
713 | "last address has been removed from interface"); | |
714 | } | |
12e41d03 | 715 | |
d62a17ae | 716 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) |
717 | { | |
718 | struct interface *ifp; | |
719 | ||
720 | zassert(ifc); | |
721 | ifp = ifc->ifp; | |
722 | zassert(ifp); | |
723 | ||
d62a17ae | 724 | if (PIM_DEBUG_ZEBRA) { |
725 | char buf[BUFSIZ]; | |
726 | prefix2str(ifc->address, buf, BUFSIZ); | |
727 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
728 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
729 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
730 | ? "secondary" | |
731 | : "primary"); | |
732 | } | |
12e41d03 | 733 | |
d62a17ae | 734 | detect_address_change(ifp, force_prim_as_any, __PRETTY_FUNCTION__); |
735 | ||
736 | pim_if_addr_del_igmp(ifc); | |
737 | pim_if_addr_del_pim(ifc); | |
12e41d03 DL |
738 | } |
739 | ||
740 | void pim_if_addr_add_all(struct interface *ifp) | |
741 | { | |
d62a17ae | 742 | struct connected *ifc; |
743 | struct listnode *node; | |
744 | struct listnode *nextnode; | |
745 | int v4_addrs = 0; | |
746 | int v6_addrs = 0; | |
747 | struct pim_interface *pim_ifp = ifp->info; | |
748 | ||
749 | ||
750 | /* PIM/IGMP enabled ? */ | |
751 | if (!pim_ifp) | |
752 | return; | |
753 | ||
754 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
755 | struct prefix *p = ifc->address; | |
756 | ||
757 | if (p->family != AF_INET) | |
758 | v6_addrs++; | |
759 | else | |
760 | v4_addrs++; | |
761 | pim_if_addr_add(ifc); | |
762 | } | |
d8424057 | 763 | |
d62a17ae | 764 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { |
765 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
766 | ||
767 | /* Interface has a valid primary address ? */ | |
768 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
769 | ||
770 | /* Interface has a valid socket ? */ | |
771 | if (pim_ifp->pim_sock_fd < 0) { | |
772 | if (pim_sock_add(ifp)) { | |
773 | zlog_warn( | |
774 | "Failure creating PIM socket for interface %s", | |
775 | ifp->name); | |
776 | } | |
777 | } | |
778 | } | |
779 | } /* pim */ | |
780 | } | |
781 | /* | |
782 | * PIM or IGMP is enabled on interface, and there is at least one | |
783 | * address assigned, then try to create a vif_index. | |
784 | */ | |
785 | if (pim_ifp->mroute_vif_index < 0) { | |
786 | pim_if_add_vif(ifp); | |
787 | } | |
788 | pim_ifchannel_scan_forward_start(ifp); | |
789 | ||
fec883d9 | 790 | pim_rp_setup(pim_ifp->pim); |
d62a17ae | 791 | pim_rp_check_on_if_add(pim_ifp); |
12e41d03 DL |
792 | } |
793 | ||
794 | void pim_if_addr_del_all(struct interface *ifp) | |
795 | { | |
d62a17ae | 796 | struct connected *ifc; |
797 | struct listnode *node; | |
798 | struct listnode *nextnode; | |
5ec5d976 DS |
799 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
800 | struct pim_instance *pim = vrf->info; | |
d62a17ae | 801 | |
802 | /* PIM/IGMP enabled ? */ | |
803 | if (!ifp->info) | |
804 | return; | |
12e41d03 | 805 | |
d62a17ae | 806 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { |
807 | struct prefix *p = ifc->address; | |
12e41d03 | 808 | |
d62a17ae | 809 | if (p->family != AF_INET) |
810 | continue; | |
12e41d03 | 811 | |
d62a17ae | 812 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); |
813 | } | |
da3dcffb | 814 | |
5ec5d976 DS |
815 | pim_rp_setup(pim); |
816 | pim_i_am_rp_re_evaluate(pim); | |
12e41d03 DL |
817 | } |
818 | ||
819 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
820 | { | |
d62a17ae | 821 | struct connected *ifc; |
822 | struct listnode *node; | |
823 | struct listnode *nextnode; | |
824 | ||
825 | /* PIM/IGMP enabled ? */ | |
826 | if (!ifp->info) | |
827 | return; | |
828 | ||
829 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
830 | struct prefix *p = ifc->address; | |
831 | ||
832 | if (p->family != AF_INET) | |
833 | continue; | |
834 | ||
835 | pim_if_addr_del_igmp(ifc); | |
836 | } | |
12e41d03 DL |
837 | } |
838 | ||
839 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
840 | { | |
d62a17ae | 841 | struct connected *ifc; |
842 | struct listnode *node; | |
843 | struct listnode *nextnode; | |
844 | ||
845 | /* PIM/IGMP enabled ? */ | |
846 | if (!ifp->info) | |
847 | return; | |
848 | ||
849 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
850 | struct prefix *p = ifc->address; | |
851 | ||
852 | if (p->family != AF_INET) | |
853 | continue; | |
854 | ||
855 | pim_if_addr_del_pim(ifc); | |
856 | } | |
12e41d03 DL |
857 | } |
858 | ||
d62a17ae | 859 | struct in_addr pim_find_primary_addr(struct interface *ifp) |
12e41d03 | 860 | { |
d62a17ae | 861 | struct connected *ifc; |
862 | struct listnode *node; | |
863 | struct in_addr addr; | |
864 | int v4_addrs = 0; | |
865 | int v6_addrs = 0; | |
866 | struct pim_interface *pim_ifp = ifp->info; | |
896b2044 | 867 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
d62a17ae | 868 | |
869 | if (pim_ifp && PIM_INADDR_ISNOT_ANY(pim_ifp->update_source)) { | |
870 | return pim_ifp->update_source; | |
871 | } | |
872 | ||
873 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
874 | struct prefix *p = ifc->address; | |
875 | ||
876 | if (p->family != AF_INET) { | |
877 | v6_addrs++; | |
878 | continue; | |
879 | } | |
880 | ||
881 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
882 | zlog_warn( | |
883 | "%s: null IPv4 address connected to interface %s", | |
884 | __PRETTY_FUNCTION__, ifp->name); | |
885 | continue; | |
886 | } | |
887 | ||
888 | v4_addrs++; | |
889 | ||
890 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) | |
891 | continue; | |
892 | ||
893 | return p->u.prefix4; | |
894 | } | |
895 | ||
896 | /* | |
897 | * If we have no v4_addrs and v6 is configured | |
898 | * We probably are using unnumbered | |
899 | * So let's grab the loopbacks v4 address | |
900 | * and use that as the primary address | |
901 | */ | |
902 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { | |
903 | struct interface *lo_ifp; | |
fec883d9 | 904 | // DBS - Come back and check here |
896b2044 DS |
905 | if (ifp->vrf_id == VRF_DEFAULT) |
906 | lo_ifp = if_lookup_by_name("lo", vrf->vrf_id); | |
907 | else | |
908 | lo_ifp = if_lookup_by_name(vrf->name, vrf->vrf_id); | |
909 | ||
d62a17ae | 910 | if (lo_ifp) |
911 | return pim_find_primary_addr(lo_ifp); | |
912 | } | |
913 | ||
914 | addr.s_addr = PIM_NET_INADDR_ANY; | |
915 | ||
916 | return addr; | |
12e41d03 DL |
917 | } |
918 | ||
d62a17ae | 919 | static int pim_iface_next_vif_index(struct interface *ifp) |
744d91b3 | 920 | { |
f88df3a6 DS |
921 | struct pim_interface *pim_ifp = ifp->info; |
922 | struct pim_instance *pim = pim_ifp->pim; | |
d62a17ae | 923 | int i; |
f88df3a6 | 924 | |
d62a17ae | 925 | /* |
926 | * The pimreg vif is always going to be in index 0 | |
927 | * of the table. | |
928 | */ | |
929 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
930 | return 0; | |
931 | ||
932 | for (i = 1; i < MAXVIFS; i++) { | |
f88df3a6 | 933 | if (pim->iface_vif_index[i] == 0) |
d62a17ae | 934 | return i; |
935 | } | |
936 | return MAXVIFS; | |
744d91b3 DS |
937 | } |
938 | ||
12e41d03 DL |
939 | /* |
940 | pim_if_add_vif() uses ifindex as vif_index | |
941 | ||
942 | see also pim_if_find_vifindex_by_ifindex() | |
943 | */ | |
944 | int pim_if_add_vif(struct interface *ifp) | |
945 | { | |
d62a17ae | 946 | struct pim_interface *pim_ifp = ifp->info; |
947 | struct in_addr ifaddr; | |
948 | unsigned char flags = 0; | |
949 | ||
950 | zassert(pim_ifp); | |
951 | ||
952 | if (pim_ifp->mroute_vif_index > 0) { | |
953 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
954 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
955 | ifp->name, ifp->ifindex); | |
956 | return -1; | |
957 | } | |
958 | ||
959 | if (ifp->ifindex < 0) { | |
960 | zlog_warn("%s: ifindex=%d < 1 on interface %s", | |
961 | __PRETTY_FUNCTION__, ifp->ifindex, ifp->name); | |
962 | return -2; | |
963 | } | |
964 | ||
965 | ifaddr = pim_ifp->primary_address; | |
966 | if (ifp->ifindex != PIM_OIF_PIM_REGISTER_VIF | |
967 | && PIM_INADDR_IS_ANY(ifaddr)) { | |
968 | zlog_warn( | |
969 | "%s: could not get address for interface %s ifindex=%d", | |
970 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex); | |
971 | return -4; | |
972 | } | |
973 | ||
974 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index(ifp); | |
975 | ||
976 | if (pim_ifp->mroute_vif_index >= MAXVIFS) { | |
977 | zlog_warn( | |
978 | "%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
979 | __PRETTY_FUNCTION__, MAXVIFS, ifp->name); | |
980 | return -3; | |
981 | } | |
982 | ||
983 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
984 | flags = VIFF_REGISTER; | |
b3f2bf7c | 985 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 986 | else |
987 | flags = VIFF_USE_IFINDEX; | |
b3f2bf7c RW |
988 | #endif |
989 | ||
d62a17ae | 990 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
991 | /* pim_mroute_add_vif reported error */ | |
992 | return -5; | |
993 | } | |
12e41d03 | 994 | |
f88df3a6 | 995 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 1; |
d62a17ae | 996 | return 0; |
12e41d03 DL |
997 | } |
998 | ||
12e41d03 DL |
999 | int pim_if_del_vif(struct interface *ifp) |
1000 | { | |
d62a17ae | 1001 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 1002 | |
d62a17ae | 1003 | if (pim_ifp->mroute_vif_index < 1) { |
1004 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
1005 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
1006 | ifp->name, ifp->ifindex); | |
1007 | return -1; | |
1008 | } | |
12e41d03 | 1009 | |
ea3d967b | 1010 | pim_mroute_del_vif(ifp); |
12e41d03 | 1011 | |
d62a17ae | 1012 | /* |
1013 | Update vif_index | |
1014 | */ | |
f88df3a6 | 1015 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 0; |
12e41d03 | 1016 | |
d62a17ae | 1017 | pim_ifp->mroute_vif_index = -1; |
12e41d03 | 1018 | |
d62a17ae | 1019 | return 0; |
12e41d03 DL |
1020 | } |
1021 | ||
da82728d | 1022 | // DBS - VRF Revist |
7cfc7bcf DS |
1023 | struct interface *pim_if_find_by_vif_index(struct pim_instance *pim, |
1024 | ifindex_t vif_index) | |
12e41d03 | 1025 | { |
d62a17ae | 1026 | struct listnode *ifnode; |
1027 | struct interface *ifp; | |
12e41d03 | 1028 | |
7cfc7bcf DS |
1029 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(pim->vrf_id), ifnode, ifp)) { |
1030 | if (ifp->info) { | |
1031 | struct pim_interface *pim_ifp; | |
1032 | pim_ifp = ifp->info; | |
b892f1dd | 1033 | |
7cfc7bcf DS |
1034 | if (vif_index == pim_ifp->mroute_vif_index) |
1035 | return ifp; | |
d62a17ae | 1036 | } |
1037 | } | |
12e41d03 | 1038 | |
d62a17ae | 1039 | return 0; |
12e41d03 DL |
1040 | } |
1041 | ||
1042 | /* | |
1043 | pim_if_add_vif() uses ifindex as vif_index | |
1044 | */ | |
7cfc7bcf | 1045 | int pim_if_find_vifindex_by_ifindex(struct pim_instance *pim, ifindex_t ifindex) |
12e41d03 | 1046 | { |
d62a17ae | 1047 | struct pim_interface *pim_ifp; |
1048 | struct interface *ifp; | |
ae90dfbb | 1049 | |
7cfc7bcf | 1050 | ifp = if_lookup_by_index(ifindex, pim->vrf_id); |
d62a17ae | 1051 | if (!ifp || !ifp->info) |
1052 | return -1; | |
1053 | pim_ifp = ifp->info; | |
ae90dfbb | 1054 | |
d62a17ae | 1055 | return pim_ifp->mroute_vif_index; |
12e41d03 DL |
1056 | } |
1057 | ||
1058 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
1059 | { | |
d62a17ae | 1060 | struct pim_interface *pim_ifp; |
12e41d03 | 1061 | |
d62a17ae | 1062 | pim_ifp = ifp->info; |
1063 | zassert(pim_ifp); | |
1064 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
12e41d03 | 1065 | |
d62a17ae | 1066 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; |
12e41d03 DL |
1067 | } |
1068 | ||
1069 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
1070 | { | |
d62a17ae | 1071 | if (pim_if_lan_delay_enabled(ifp)) { |
1072 | struct pim_interface *pim_ifp; | |
1073 | pim_ifp = ifp->info; | |
1074 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
1075 | } else { | |
1076 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
1077 | } | |
12e41d03 DL |
1078 | } |
1079 | ||
1080 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
1081 | { | |
d62a17ae | 1082 | if (pim_if_lan_delay_enabled(ifp)) { |
1083 | struct pim_interface *pim_ifp; | |
1084 | pim_ifp = ifp->info; | |
1085 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
1086 | } else { | |
1087 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
1088 | } | |
12e41d03 DL |
1089 | } |
1090 | ||
1091 | int pim_if_t_override_msec(struct interface *ifp) | |
1092 | { | |
d62a17ae | 1093 | int effective_override_interval_msec; |
1094 | int t_override_msec; | |
12e41d03 | 1095 | |
d62a17ae | 1096 | effective_override_interval_msec = |
1097 | pim_if_effective_override_interval_msec(ifp); | |
12e41d03 | 1098 | |
d62a17ae | 1099 | t_override_msec = random() % (effective_override_interval_msec + 1); |
12e41d03 | 1100 | |
d62a17ae | 1101 | return t_override_msec; |
12e41d03 DL |
1102 | } |
1103 | ||
1104 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
1105 | { | |
d62a17ae | 1106 | return pim_if_effective_propagation_delay_msec(ifp) |
1107 | + pim_if_effective_override_interval_msec(ifp); | |
12e41d03 DL |
1108 | } |
1109 | ||
1110 | /* | |
1111 | RFC 4601: 4.1.6. State Summarization Macros | |
1112 | ||
1113 | The function NBR( I, A ) uses information gathered through PIM Hello | |
1114 | messages to map the IP address A of a directly connected PIM | |
1115 | neighbor router on interface I to the primary IP address of the same | |
1116 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
1117 | address that it uses as the source of its PIM Hello messages. | |
1118 | */ | |
1119 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
1120 | struct in_addr addr) | |
1121 | { | |
d62a17ae | 1122 | struct listnode *neighnode; |
1123 | struct pim_neighbor *neigh; | |
1124 | struct pim_interface *pim_ifp; | |
1125 | struct prefix p; | |
1126 | ||
1127 | zassert(ifp); | |
1128 | ||
1129 | pim_ifp = ifp->info; | |
1130 | if (!pim_ifp) { | |
1131 | zlog_warn("%s: multicast not enabled on interface %s", | |
1132 | __PRETTY_FUNCTION__, ifp->name); | |
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | p.family = AF_INET; | |
1137 | p.u.prefix4 = addr; | |
1138 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
1139 | ||
1140 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, | |
1141 | neigh)) { | |
1142 | ||
1143 | /* primary address ? */ | |
1144 | if (neigh->source_addr.s_addr == addr.s_addr) | |
1145 | return neigh; | |
1146 | ||
1147 | /* secondary address ? */ | |
1148 | if (pim_neighbor_find_secondary(neigh, &p)) | |
1149 | return neigh; | |
1150 | } | |
1151 | ||
1152 | if (PIM_DEBUG_PIM_TRACE) { | |
1153 | char addr_str[INET_ADDRSTRLEN]; | |
1154 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); | |
1155 | zlog_debug( | |
1156 | "%s: neighbor not found for address %s on interface %s", | |
1157 | __PRETTY_FUNCTION__, addr_str, ifp->name); | |
1158 | } | |
1159 | ||
1160 | return NULL; | |
12e41d03 DL |
1161 | } |
1162 | ||
1163 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
1164 | { | |
d62a17ae | 1165 | struct pim_interface *pim_ifp; |
1166 | long t_suppressed_msec; | |
1167 | uint32_t ramount = 0; | |
12e41d03 | 1168 | |
d62a17ae | 1169 | pim_ifp = ifp->info; |
1170 | zassert(pim_ifp); | |
12e41d03 | 1171 | |
d62a17ae | 1172 | /* join suppression disabled ? */ |
1173 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
1174 | return 0; | |
12e41d03 | 1175 | |
d62a17ae | 1176 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ |
1177 | ramount = 1100 + (random() % (1400 - 1100 + 1)); | |
1178 | t_suppressed_msec = qpim_t_periodic * ramount; | |
12e41d03 | 1179 | |
d62a17ae | 1180 | return t_suppressed_msec; |
12e41d03 DL |
1181 | } |
1182 | ||
1183 | static void igmp_join_free(struct igmp_join *ij) | |
1184 | { | |
d62a17ae | 1185 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); |
12e41d03 DL |
1186 | } |
1187 | ||
1188 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
1189 | struct in_addr group_addr, | |
1190 | struct in_addr source_addr) | |
1191 | { | |
d62a17ae | 1192 | struct listnode *node; |
1193 | struct igmp_join *ij; | |
12e41d03 | 1194 | |
d62a17ae | 1195 | zassert(join_list); |
12e41d03 | 1196 | |
d62a17ae | 1197 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { |
1198 | if ((group_addr.s_addr == ij->group_addr.s_addr) | |
1199 | && (source_addr.s_addr == ij->source_addr.s_addr)) | |
1200 | return ij; | |
1201 | } | |
12e41d03 | 1202 | |
d62a17ae | 1203 | return 0; |
12e41d03 DL |
1204 | } |
1205 | ||
d62a17ae | 1206 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
1207 | struct in_addr group_addr, struct in_addr source_addr) | |
12e41d03 | 1208 | { |
d62a17ae | 1209 | int join_fd; |
12e41d03 | 1210 | |
d62a17ae | 1211 | join_fd = pim_socket_raw(IPPROTO_IGMP); |
1212 | if (join_fd < 0) { | |
1213 | return -1; | |
1214 | } | |
12e41d03 | 1215 | |
d62a17ae | 1216 | if (pim_socket_join_source(join_fd, ifindex, group_addr, source_addr, |
1217 | ifname)) { | |
1218 | close(join_fd); | |
1219 | return -2; | |
1220 | } | |
12e41d03 | 1221 | |
d62a17ae | 1222 | return join_fd; |
12e41d03 DL |
1223 | } |
1224 | ||
1225 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1226 | struct in_addr group_addr, | |
1227 | struct in_addr source_addr) | |
1228 | { | |
d62a17ae | 1229 | struct pim_interface *pim_ifp; |
1230 | struct igmp_join *ij; | |
1231 | int join_fd; | |
1232 | ||
1233 | pim_ifp = ifp->info; | |
1234 | zassert(pim_ifp); | |
1235 | ||
1236 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, | |
1237 | source_addr); | |
1238 | if (join_fd < 0) { | |
1239 | char group_str[INET_ADDRSTRLEN]; | |
1240 | char source_str[INET_ADDRSTRLEN]; | |
1241 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1242 | sizeof(group_str)); | |
1243 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1244 | sizeof(source_str)); | |
1245 | zlog_warn( | |
1246 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
1247 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1248 | return 0; | |
1249 | } | |
1250 | ||
1251 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); | |
1252 | if (!ij) { | |
1253 | char group_str[INET_ADDRSTRLEN]; | |
1254 | char source_str[INET_ADDRSTRLEN]; | |
1255 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1256 | sizeof(group_str)); | |
1257 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1258 | sizeof(source_str)); | |
1259 | zlog_err( | |
1260 | "%s: XCALLOC(%zu) failure for IGMP group %s source %s on interface %s", | |
1261 | __PRETTY_FUNCTION__, sizeof(*ij), group_str, source_str, | |
1262 | ifp->name); | |
1263 | close(join_fd); | |
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | ij->sock_fd = join_fd; | |
1268 | ij->group_addr = group_addr; | |
1269 | ij->source_addr = source_addr; | |
1270 | ij->sock_creation = pim_time_monotonic_sec(); | |
1271 | ||
1272 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1273 | ||
1274 | return ij; | |
12e41d03 DL |
1275 | } |
1276 | ||
37664928 | 1277 | ferr_r pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1278 | struct in_addr source_addr) |
1279 | { | |
d62a17ae | 1280 | struct pim_interface *pim_ifp; |
1281 | struct igmp_join *ij; | |
1282 | ||
1283 | pim_ifp = ifp->info; | |
1284 | if (!pim_ifp) { | |
37664928 DS |
1285 | return ferr_cfg_invalid("multicast not enabled on interface %s", |
1286 | ifp->name); | |
d62a17ae | 1287 | } |
1288 | ||
1289 | if (!pim_ifp->igmp_join_list) { | |
1290 | pim_ifp->igmp_join_list = list_new(); | |
1291 | if (!pim_ifp->igmp_join_list) { | |
37664928 | 1292 | return ferr_cfg_invalid("Insufficient memory"); |
d62a17ae | 1293 | } |
1294 | pim_ifp->igmp_join_list->del = (void (*)(void *))igmp_join_free; | |
1295 | } | |
1296 | ||
1297 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
53d829f5 DW |
1298 | |
1299 | /* This interface has already been configured to join this IGMP group | |
1300 | */ | |
d62a17ae | 1301 | if (ij) { |
53d829f5 | 1302 | return ferr_ok(); |
d62a17ae | 1303 | } |
1304 | ||
1305 | ij = igmp_join_new(ifp, group_addr, source_addr); | |
1306 | if (!ij) { | |
37664928 DS |
1307 | return ferr_cfg_invalid( |
1308 | "Failure to create new join data structure, see log file for more information"); | |
d62a17ae | 1309 | } |
1310 | ||
1311 | if (PIM_DEBUG_IGMP_EVENTS) { | |
1312 | char group_str[INET_ADDRSTRLEN]; | |
1313 | char source_str[INET_ADDRSTRLEN]; | |
1314 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1315 | sizeof(group_str)); | |
1316 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1317 | sizeof(source_str)); | |
1318 | zlog_debug( | |
1319 | "%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
1320 | __PRETTY_FUNCTION__, source_str, group_str, ifp->name); | |
1321 | } | |
12e41d03 | 1322 | |
37664928 | 1323 | return ferr_ok(); |
d62a17ae | 1324 | } |
12e41d03 DL |
1325 | |
1326 | ||
d62a17ae | 1327 | int pim_if_igmp_join_del(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1328 | struct in_addr source_addr) |
1329 | { | |
d62a17ae | 1330 | struct pim_interface *pim_ifp; |
1331 | struct igmp_join *ij; | |
1332 | ||
1333 | pim_ifp = ifp->info; | |
1334 | if (!pim_ifp) { | |
1335 | zlog_warn("%s: multicast not enabled on interface %s", | |
1336 | __PRETTY_FUNCTION__, ifp->name); | |
1337 | return -1; | |
1338 | } | |
1339 | ||
1340 | if (!pim_ifp->igmp_join_list) { | |
1341 | zlog_warn("%s: no IGMP join on interface %s", | |
1342 | __PRETTY_FUNCTION__, ifp->name); | |
1343 | return -2; | |
1344 | } | |
1345 | ||
1346 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1347 | if (!ij) { | |
1348 | char group_str[INET_ADDRSTRLEN]; | |
1349 | char source_str[INET_ADDRSTRLEN]; | |
1350 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1351 | sizeof(group_str)); | |
1352 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1353 | sizeof(source_str)); | |
1354 | zlog_warn( | |
1355 | "%s: could not find IGMP group %s source %s on interface %s", | |
1356 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1357 | return -3; | |
1358 | } | |
1359 | ||
1360 | if (close(ij->sock_fd)) { | |
1361 | char group_str[INET_ADDRSTRLEN]; | |
1362 | char source_str[INET_ADDRSTRLEN]; | |
1363 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1364 | sizeof(group_str)); | |
1365 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1366 | sizeof(source_str)); | |
1367 | zlog_warn( | |
1368 | "%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
1369 | __PRETTY_FUNCTION__, ij->sock_fd, group_str, source_str, | |
1370 | ifp->name, errno, safe_strerror(errno)); | |
1371 | /* warning only */ | |
1372 | } | |
1373 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1374 | igmp_join_free(ij); | |
1375 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
affe9e99 | 1376 | list_delete_and_null(&pim_ifp->igmp_join_list); |
d62a17ae | 1377 | pim_ifp->igmp_join_list = 0; |
1378 | } | |
1379 | ||
1380 | return 0; | |
12e41d03 DL |
1381 | } |
1382 | ||
1383 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1384 | { | |
d62a17ae | 1385 | struct pim_interface *pim_ifp; |
1386 | struct listnode *node; | |
1387 | struct listnode *nextnode; | |
1388 | struct igmp_join *ij; | |
1389 | ||
1390 | pim_ifp = ifp->info; | |
1391 | if (!pim_ifp) { | |
1392 | zlog_warn("%s: multicast not enabled on interface %s", | |
1393 | __PRETTY_FUNCTION__, ifp->name); | |
1394 | return; | |
1395 | } | |
1396 | ||
1397 | if (!pim_ifp->igmp_join_list) | |
1398 | return; | |
1399 | ||
1400 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1401 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
12e41d03 DL |
1402 | } |
1403 | ||
1404 | /* | |
1405 | RFC 4601 | |
1406 | ||
1407 | Transitions from "I am Assert Loser" State | |
1408 | ||
1409 | Current Winner's GenID Changes or NLT Expires | |
1410 | ||
1411 | The Neighbor Liveness Timer associated with the current winner | |
1412 | expires or we receive a Hello message from the current winner | |
1413 | reporting a different GenID from the one it previously reported. | |
1414 | This indicates that the current winner's interface or router has | |
1415 | gone down (and may have come back up), and so we must assume it no | |
1416 | longer knows it was the winner. | |
1417 | */ | |
1418 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1419 | struct in_addr neigh_addr) | |
1420 | { | |
d62a17ae | 1421 | struct pim_interface *pim_ifp; |
d62a17ae | 1422 | struct pim_ifchannel *ch; |
1423 | ||
1424 | pim_ifp = ifp->info; | |
1425 | zassert(pim_ifp); | |
1426 | ||
a2addae8 | 1427 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1428 | /* Is (S,G,I) assert loser ? */ |
1429 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1430 | continue; | |
1431 | /* Dead neighbor was winner ? */ | |
1432 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1433 | continue; | |
1434 | ||
1435 | assert_action_a5(ch); | |
1436 | } | |
12e41d03 DL |
1437 | } |
1438 | ||
1439 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1440 | { | |
d62a17ae | 1441 | struct pim_ifchannel *ch; |
12e41d03 | 1442 | |
d62a17ae | 1443 | /* clear off flag from interface's upstreams */ |
a2addae8 | 1444 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1445 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED( |
1446 | ch->upstream->flags); | |
1447 | } | |
12e41d03 | 1448 | |
d62a17ae | 1449 | /* scan per-interface (S,G,I) state on this I interface */ |
a2addae8 | 1450 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1451 | struct pim_upstream *up = ch->upstream; |
12e41d03 | 1452 | |
d62a17ae | 1453 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) |
1454 | continue; | |
12e41d03 | 1455 | |
d62a17ae | 1456 | /* update join_desired for the global (S,G) state */ |
9b29ea95 | 1457 | pim_upstream_update_join_desired(pim_ifp->pim, up); |
d62a17ae | 1458 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); |
1459 | } | |
12e41d03 DL |
1460 | } |
1461 | ||
1462 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1463 | { | |
d62a17ae | 1464 | struct pim_interface *pim_ifp; |
d62a17ae | 1465 | struct pim_ifchannel *ch; |
1466 | ||
1467 | pim_ifp = ifp->info; | |
1468 | if (!pim_ifp) | |
1469 | return; | |
1470 | ||
a2addae8 | 1471 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1472 | pim_ifchannel_update_assert_tracking_desired(ch); |
1473 | } | |
12e41d03 | 1474 | } |
c992c9a0 DS |
1475 | |
1476 | /* | |
1477 | * PIM wants to have an interface pointer for everything it does. | |
1478 | * The pimreg is a special interface that we have that is not | |
1479 | * quite an inteface but a VIF is created for it. | |
1480 | */ | |
43e40fdf | 1481 | void pim_if_create_pimreg(struct pim_instance *pim) |
c992c9a0 | 1482 | { |
bcc24579 | 1483 | char pimreg_name[INTERFACE_NAMSIZ]; |
c992c9a0 | 1484 | |
43e40fdf | 1485 | if (!pim->regiface) { |
afa2b179 | 1486 | if (pim->vrf_id == VRF_DEFAULT) |
bcc24579 | 1487 | strlcpy(pimreg_name, "pimreg", sizeof(pimreg_name)); |
afa2b179 | 1488 | else |
bcc24579 RW |
1489 | snprintf(pimreg_name, sizeof(pimreg_name), "pimreg%u", |
1490 | pim->vrf->data.l.table_id); | |
afa2b179 | 1491 | |
bcc24579 | 1492 | pim->regiface = if_create(pimreg_name, pim->vrf_id); |
43e40fdf DS |
1493 | pim->regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; |
1494 | ||
1495 | pim_if_new(pim->regiface, 0, 0); | |
d62a17ae | 1496 | } |
c992c9a0 | 1497 | } |
3565202d | 1498 | |
d62a17ae | 1499 | int pim_if_connected_to_source(struct interface *ifp, struct in_addr src) |
3565202d | 1500 | { |
d62a17ae | 1501 | struct listnode *cnode; |
1502 | struct connected *c; | |
1503 | struct prefix p; | |
1504 | ||
1505 | if (!ifp) | |
1506 | return 0; | |
1507 | ||
1508 | p.family = AF_INET; | |
1509 | p.u.prefix4 = src; | |
1510 | p.prefixlen = IPV4_MAX_BITLEN; | |
1511 | ||
1512 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
1513 | if ((c->address->family == AF_INET) | |
1514 | && prefix_match(CONNECTED_PREFIX(c), &p)) { | |
1515 | return 1; | |
1516 | } | |
1517 | } | |
1518 | ||
1519 | return 0; | |
3565202d | 1520 | } |
11699c47 DS |
1521 | |
1522 | int pim_if_is_loopback(struct pim_instance *pim, struct interface *ifp) | |
1523 | { | |
1524 | if (if_is_loopback(ifp)) | |
1525 | return 1; | |
1526 | ||
1527 | if (strcmp(ifp->name, pim->vrf->name) == 0) | |
1528 | return 1; | |
1529 | ||
1530 | return 0; | |
1531 | } | |
90133de6 DS |
1532 | |
1533 | int pim_if_is_vrf_device(struct interface *ifp) | |
1534 | { | |
1535 | struct vrf *vrf; | |
1536 | ||
a2addae8 | 1537 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
90133de6 DS |
1538 | if (strncmp(ifp->name, vrf->name, strlen(ifp->name)) == 0) |
1539 | return 1; | |
1540 | } | |
1541 | ||
1542 | return 0; | |
1543 | } | |
ad7b74c4 DS |
1544 | |
1545 | int pim_if_ifchannel_count(struct pim_interface *pim_ifp) | |
1546 | { | |
1547 | struct pim_ifchannel *ch; | |
1548 | int count = 0; | |
1549 | ||
a2addae8 | 1550 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
ad7b74c4 DS |
1551 | count++; |
1552 | } | |
1553 | ||
1554 | return count; | |
1555 | } |