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Commit | Line | Data |
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12e41d03 | 1 | /* |
896014f4 DL |
2 | * PIM for Quagga |
3 | * Copyright (C) 2008 Everton da Silva Marques | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; see the file COPYING; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
12e41d03 DL |
18 | |
19 | #include <zebra.h> | |
20 | ||
21 | #include "if.h" | |
22 | #include "log.h" | |
23 | #include "vty.h" | |
24 | #include "memory.h" | |
25 | #include "prefix.h" | |
469351b3 | 26 | #include "vrf.h" |
9f0edbc9 | 27 | #include "linklist.h" |
7176984f | 28 | #include "plist.h" |
a625e937 | 29 | #include "hash.h" |
12e41d03 DL |
30 | |
31 | #include "pimd.h" | |
c2cf4b02 | 32 | #include "pim_instance.h" |
cba44481 | 33 | #include "pim_zebra.h" |
12e41d03 DL |
34 | #include "pim_iface.h" |
35 | #include "pim_igmp.h" | |
36 | #include "pim_mroute.h" | |
37 | #include "pim_oil.h" | |
38 | #include "pim_str.h" | |
39 | #include "pim_pim.h" | |
40 | #include "pim_neighbor.h" | |
41 | #include "pim_ifchannel.h" | |
12e41d03 DL |
42 | #include "pim_sock.h" |
43 | #include "pim_time.h" | |
44 | #include "pim_ssmpingd.h" | |
7176984f | 45 | #include "pim_rp.h" |
cba44481 | 46 | #include "pim_nht.h" |
12e41d03 | 47 | |
ea4a71fc | 48 | struct list *pim_ifchannel_list = NULL; |
dc0665f1 | 49 | static int pim_iface_vif_index[MAXVIFS]; |
c992c9a0 | 50 | |
12e41d03 | 51 | static void pim_if_igmp_join_del_all(struct interface *ifp); |
dba88ccb | 52 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
d62a17ae | 53 | struct in_addr group_addr, |
54 | struct in_addr source_addr); | |
12e41d03 | 55 | |
d62a17ae | 56 | void pim_if_init(void) |
ea4a71fc | 57 | { |
d62a17ae | 58 | int i; |
dc0665f1 | 59 | |
d62a17ae | 60 | for (i = 0; i < MAXVIFS; i++) |
61 | pim_iface_vif_index[i] = 0; | |
dc0665f1 | 62 | |
d62a17ae | 63 | pim_ifchannel_list = list_new(); |
64 | pim_ifchannel_list->cmp = | |
65 | (int (*)(void *, void *))pim_ifchannel_compare; | |
ea4a71fc DS |
66 | } |
67 | ||
d62a17ae | 68 | void pim_if_terminate(void) |
ea4a71fc | 69 | { |
d62a17ae | 70 | if (pim_ifchannel_list) |
71 | list_free(pim_ifchannel_list); | |
ea4a71fc DS |
72 | } |
73 | ||
74 | static void *if_list_clean(struct pim_interface *pim_ifp) | |
75 | { | |
d62a17ae | 76 | if (pim_ifp->igmp_join_list) { |
77 | list_delete(pim_ifp->igmp_join_list); | |
78 | } | |
ea4a71fc | 79 | |
d62a17ae | 80 | if (pim_ifp->igmp_socket_list) { |
81 | list_delete(pim_ifp->igmp_socket_list); | |
82 | } | |
ea4a71fc | 83 | |
d62a17ae | 84 | if (pim_ifp->pim_neighbor_list) { |
85 | list_delete(pim_ifp->pim_neighbor_list); | |
86 | } | |
ea4a71fc | 87 | |
d62a17ae | 88 | if (pim_ifp->upstream_switch_list) |
89 | list_delete(pim_ifp->upstream_switch_list); | |
982bff89 | 90 | |
d62a17ae | 91 | if (pim_ifp->pim_ifchannel_list) { |
92 | list_delete(pim_ifp->pim_ifchannel_list); | |
93 | } | |
ea4a71fc | 94 | |
d62a17ae | 95 | if (pim_ifp->pim_ifchannel_hash) |
96 | hash_free(pim_ifp->pim_ifchannel_hash); | |
a625e937 | 97 | |
d62a17ae | 98 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
ea4a71fc | 99 | |
d62a17ae | 100 | return 0; |
ea4a71fc DS |
101 | } |
102 | ||
12e41d03 DL |
103 | struct pim_interface *pim_if_new(struct interface *ifp, int igmp, int pim) |
104 | { | |
d62a17ae | 105 | struct pim_interface *pim_ifp; |
106 | ||
107 | zassert(ifp); | |
108 | zassert(!ifp->info); | |
109 | ||
110 | pim_ifp = XCALLOC(MTYPE_PIM_INTERFACE, sizeof(*pim_ifp)); | |
111 | if (!pim_ifp) { | |
112 | zlog_err("PIM XCALLOC(%zu) failure", sizeof(*pim_ifp)); | |
113 | return 0; | |
114 | } | |
115 | ||
116 | pim_ifp->options = 0; | |
18d8291f | 117 | pim_ifp->pim = pim_get_pim_instance(ifp->vrf_id); |
d62a17ae | 118 | pim_ifp->mroute_vif_index = -1; |
119 | ||
120 | pim_ifp->igmp_version = IGMP_DEFAULT_VERSION; | |
121 | pim_ifp->igmp_default_robustness_variable = | |
122 | IGMP_DEFAULT_ROBUSTNESS_VARIABLE; | |
123 | pim_ifp->igmp_default_query_interval = IGMP_GENERAL_QUERY_INTERVAL; | |
124 | pim_ifp->igmp_query_max_response_time_dsec = | |
125 | IGMP_QUERY_MAX_RESPONSE_TIME_DSEC; | |
126 | pim_ifp->igmp_specific_query_max_response_time_dsec = | |
127 | IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC; | |
128 | ||
129 | /* | |
130 | RFC 3376: 8.3. Query Response Interval | |
131 | The number of seconds represented by the [Query Response Interval] | |
132 | must be less than the [Query Interval]. | |
133 | */ | |
134 | zassert(pim_ifp->igmp_query_max_response_time_dsec | |
135 | < pim_ifp->igmp_default_query_interval); | |
136 | ||
137 | if (pim) | |
138 | PIM_IF_DO_PIM(pim_ifp->options); | |
139 | if (igmp) | |
140 | PIM_IF_DO_IGMP(pim_ifp->options); | |
141 | ||
142 | PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(pim_ifp->options); | |
143 | ||
144 | pim_ifp->igmp_join_list = NULL; | |
145 | pim_ifp->igmp_socket_list = NULL; | |
146 | pim_ifp->pim_neighbor_list = NULL; | |
147 | pim_ifp->upstream_switch_list = NULL; | |
148 | pim_ifp->pim_ifchannel_list = NULL; | |
149 | pim_ifp->pim_ifchannel_hash = NULL; | |
150 | pim_ifp->pim_generation_id = 0; | |
151 | ||
152 | /* list of struct igmp_sock */ | |
153 | pim_ifp->igmp_socket_list = list_new(); | |
154 | if (!pim_ifp->igmp_socket_list) { | |
155 | zlog_err("%s %s: failure: igmp_socket_list=list_new()", | |
156 | __FILE__, __PRETTY_FUNCTION__); | |
157 | return if_list_clean(pim_ifp); | |
158 | } | |
159 | pim_ifp->igmp_socket_list->del = (void (*)(void *))igmp_sock_free; | |
160 | ||
161 | /* list of struct pim_neighbor */ | |
162 | pim_ifp->pim_neighbor_list = list_new(); | |
163 | if (!pim_ifp->pim_neighbor_list) { | |
164 | zlog_err("%s %s: failure: pim_neighbor_list=list_new()", | |
165 | __FILE__, __PRETTY_FUNCTION__); | |
166 | return if_list_clean(pim_ifp); | |
167 | } | |
168 | pim_ifp->pim_neighbor_list->del = (void (*)(void *))pim_neighbor_free; | |
169 | ||
170 | pim_ifp->upstream_switch_list = list_new(); | |
171 | if (!pim_ifp->upstream_switch_list) { | |
172 | zlog_err("%s %s: failure: upstream_switch_list=list_new()", | |
173 | __FILE__, __PRETTY_FUNCTION__); | |
174 | return if_list_clean(pim_ifp); | |
175 | } | |
176 | ||
177 | /* list of struct pim_ifchannel */ | |
178 | pim_ifp->pim_ifchannel_list = list_new(); | |
179 | if (!pim_ifp->pim_ifchannel_list) { | |
180 | zlog_err("%s %s: failure: pim_ifchannel_list=list_new()", | |
181 | __FILE__, __PRETTY_FUNCTION__); | |
182 | return if_list_clean(pim_ifp); | |
183 | } | |
184 | pim_ifp->pim_ifchannel_list->del = (void (*)(void *))pim_ifchannel_free; | |
185 | pim_ifp->pim_ifchannel_list->cmp = | |
186 | (int (*)(void *, void *))pim_ifchannel_compare; | |
187 | ||
188 | pim_ifp->pim_ifchannel_hash = | |
189 | hash_create(pim_ifchannel_hash_key, pim_ifchannel_equal, NULL); | |
190 | ||
191 | ifp->info = pim_ifp; | |
192 | ||
193 | pim_sock_reset(ifp); | |
194 | ||
195 | pim_if_add_vif(ifp); | |
196 | ||
197 | return pim_ifp; | |
12e41d03 DL |
198 | } |
199 | ||
200 | void pim_if_delete(struct interface *ifp) | |
201 | { | |
d62a17ae | 202 | struct pim_interface *pim_ifp; |
12e41d03 | 203 | |
d62a17ae | 204 | zassert(ifp); |
205 | pim_ifp = ifp->info; | |
206 | zassert(pim_ifp); | |
12e41d03 | 207 | |
d62a17ae | 208 | if (pim_ifp->igmp_join_list) { |
209 | pim_if_igmp_join_del_all(ifp); | |
210 | } | |
12e41d03 | 211 | |
d62a17ae | 212 | pim_ifchannel_delete_all(ifp); |
213 | igmp_sock_delete_all(ifp); | |
12e41d03 | 214 | |
d62a17ae | 215 | pim_neighbor_delete_all(ifp, "Interface removed from configuration"); |
12e41d03 | 216 | |
d62a17ae | 217 | pim_if_del_vif(ifp); |
12e41d03 | 218 | |
d62a17ae | 219 | list_delete(pim_ifp->igmp_socket_list); |
220 | list_delete(pim_ifp->pim_neighbor_list); | |
221 | list_delete(pim_ifp->upstream_switch_list); | |
222 | list_delete(pim_ifp->pim_ifchannel_list); | |
12e41d03 | 223 | |
d62a17ae | 224 | hash_free(pim_ifp->pim_ifchannel_hash); |
a625e937 | 225 | |
d62a17ae | 226 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
12e41d03 | 227 | |
d62a17ae | 228 | ifp->info = NULL; |
12e41d03 DL |
229 | } |
230 | ||
231 | void pim_if_update_could_assert(struct interface *ifp) | |
232 | { | |
d62a17ae | 233 | struct pim_interface *pim_ifp; |
234 | struct listnode *node; | |
235 | struct listnode *next_node; | |
236 | struct pim_ifchannel *ch; | |
12e41d03 | 237 | |
d62a17ae | 238 | pim_ifp = ifp->info; |
239 | zassert(pim_ifp); | |
12e41d03 | 240 | |
d62a17ae | 241 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, |
242 | ch)) { | |
243 | pim_ifchannel_update_could_assert(ch); | |
244 | } | |
12e41d03 DL |
245 | } |
246 | ||
247 | static void pim_if_update_my_assert_metric(struct interface *ifp) | |
248 | { | |
d62a17ae | 249 | struct pim_interface *pim_ifp; |
250 | struct listnode *node; | |
251 | struct listnode *next_node; | |
252 | struct pim_ifchannel *ch; | |
12e41d03 | 253 | |
d62a17ae | 254 | pim_ifp = ifp->info; |
255 | zassert(pim_ifp); | |
12e41d03 | 256 | |
d62a17ae | 257 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, |
258 | ch)) { | |
259 | pim_ifchannel_update_my_assert_metric(ch); | |
260 | } | |
12e41d03 DL |
261 | } |
262 | ||
263 | static void pim_addr_change(struct interface *ifp) | |
264 | { | |
d62a17ae | 265 | struct pim_interface *pim_ifp; |
266 | ||
267 | pim_ifp = ifp->info; | |
268 | zassert(pim_ifp); | |
269 | ||
270 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- | |
271 | Done TODO T30 */ | |
272 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
273 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
274 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
275 | pim_if_update_assert_tracking_desired( | |
276 | ifp); /* depends on DR, join_desired */ | |
277 | ||
278 | /* | |
279 | RFC 4601: 4.3.1. Sending Hello Messages | |
280 | ||
281 | 1) Before an interface goes down or changes primary IP address, a | |
282 | Hello message with a zero HoldTime should be sent immediately | |
283 | (with the old IP address if the IP address changed). | |
284 | -- FIXME See CAVEAT C13 | |
285 | ||
286 | 2) After an interface has changed its IP address, it MUST send a | |
287 | Hello message with its new IP address. | |
288 | -- DONE below | |
289 | ||
290 | 3) If an interface changes one of its secondary IP addresses, a | |
291 | Hello message with an updated Address_List option and a non-zero | |
292 | HoldTime should be sent immediately. | |
293 | -- FIXME See TODO T31 | |
294 | */ | |
295 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
296 | if (pim_ifp->pim_sock_fd < 0) | |
297 | return; | |
298 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
12e41d03 DL |
299 | } |
300 | ||
12e41d03 DL |
301 | static int detect_primary_address_change(struct interface *ifp, |
302 | int force_prim_as_any, | |
303 | const char *caller) | |
304 | { | |
d62a17ae | 305 | struct pim_interface *pim_ifp = ifp->info; |
306 | struct in_addr new_prim_addr; | |
307 | int changed; | |
308 | ||
309 | if (force_prim_as_any) | |
310 | new_prim_addr.s_addr = INADDR_ANY; | |
311 | else | |
312 | new_prim_addr = pim_find_primary_addr(ifp); | |
313 | ||
314 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
315 | ||
316 | if (PIM_DEBUG_ZEBRA) { | |
317 | char new_prim_str[INET_ADDRSTRLEN]; | |
318 | char old_prim_str[INET_ADDRSTRLEN]; | |
319 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, | |
320 | sizeof(new_prim_str)); | |
321 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, | |
322 | sizeof(old_prim_str)); | |
323 | zlog_debug("%s: old=%s new=%s on interface %s: %s", | |
324 | __PRETTY_FUNCTION__, old_prim_str, new_prim_str, | |
325 | ifp->name, changed ? "changed" : "unchanged"); | |
326 | } | |
327 | ||
328 | if (changed) { | |
329 | pim_ifp->primary_address = new_prim_addr; | |
330 | } | |
331 | ||
332 | return changed; | |
12e41d03 DL |
333 | } |
334 | ||
7176984f | 335 | static int pim_sec_addr_comp(const void *p1, const void *p2) |
336 | { | |
d62a17ae | 337 | const struct pim_secondary_addr *sec1 = p1; |
338 | const struct pim_secondary_addr *sec2 = p2; | |
339 | ||
340 | if (sec1->addr.family == AF_INET && sec2->addr.family == AF_INET6) | |
341 | return -1; | |
342 | ||
343 | if (sec1->addr.family == AF_INET6 && sec2->addr.family == AF_INET) | |
344 | return 1; | |
345 | ||
346 | if (sec1->addr.family == AF_INET) { | |
347 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
348 | < ntohl(sec2->addr.u.prefix4.s_addr)) | |
349 | return -1; | |
350 | ||
351 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
352 | > ntohl(sec2->addr.u.prefix4.s_addr)) | |
353 | return 1; | |
354 | } else { | |
355 | return memcmp(&sec1->addr.u.prefix6, &sec2->addr.u.prefix6, | |
356 | sizeof(struct in6_addr)); | |
357 | } | |
358 | ||
359 | return 0; | |
7176984f | 360 | } |
361 | ||
362 | static void pim_sec_addr_free(struct pim_secondary_addr *sec_addr) | |
363 | { | |
d62a17ae | 364 | XFREE(MTYPE_PIM_SEC_ADDR, sec_addr); |
7176984f | 365 | } |
366 | ||
367 | static struct pim_secondary_addr * | |
294b6d72 | 368 | pim_sec_addr_find(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 369 | { |
d62a17ae | 370 | struct pim_secondary_addr *sec_addr; |
371 | struct listnode *node; | |
7176984f | 372 | |
d62a17ae | 373 | if (!pim_ifp->sec_addr_list) { |
374 | return NULL; | |
375 | } | |
7176984f | 376 | |
d62a17ae | 377 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
378 | if (prefix_cmp(&sec_addr->addr, addr)) { | |
379 | return sec_addr; | |
380 | } | |
381 | } | |
7176984f | 382 | |
d62a17ae | 383 | return NULL; |
7176984f | 384 | } |
385 | ||
386 | static void pim_sec_addr_del(struct pim_interface *pim_ifp, | |
d62a17ae | 387 | struct pim_secondary_addr *sec_addr) |
7176984f | 388 | { |
d62a17ae | 389 | listnode_delete(pim_ifp->sec_addr_list, sec_addr); |
390 | pim_sec_addr_free(sec_addr); | |
7176984f | 391 | } |
392 | ||
294b6d72 | 393 | static int pim_sec_addr_add(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 394 | { |
d62a17ae | 395 | int changed = 0; |
396 | struct pim_secondary_addr *sec_addr; | |
397 | ||
398 | sec_addr = pim_sec_addr_find(pim_ifp, addr); | |
399 | if (sec_addr) { | |
400 | sec_addr->flags &= ~PIM_SEC_ADDRF_STALE; | |
401 | return changed; | |
402 | } | |
403 | ||
404 | if (!pim_ifp->sec_addr_list) { | |
405 | pim_ifp->sec_addr_list = list_new(); | |
406 | pim_ifp->sec_addr_list->del = | |
407 | (void (*)(void *))pim_sec_addr_free; | |
408 | pim_ifp->sec_addr_list->cmp = | |
409 | (int (*)(void *, void *))pim_sec_addr_comp; | |
410 | } | |
411 | ||
412 | sec_addr = XCALLOC(MTYPE_PIM_SEC_ADDR, sizeof(*sec_addr)); | |
413 | if (!sec_addr) { | |
414 | if (list_isempty(pim_ifp->sec_addr_list)) { | |
415 | list_free(pim_ifp->sec_addr_list); | |
416 | pim_ifp->sec_addr_list = NULL; | |
417 | } | |
418 | return changed; | |
419 | } | |
420 | ||
421 | changed = 1; | |
422 | sec_addr->addr = *addr; | |
423 | listnode_add_sort(pim_ifp->sec_addr_list, sec_addr); | |
424 | ||
425 | return changed; | |
7176984f | 426 | } |
427 | ||
428 | static int pim_sec_addr_del_all(struct pim_interface *pim_ifp) | |
429 | { | |
d62a17ae | 430 | int changed = 0; |
431 | ||
432 | if (!pim_ifp->sec_addr_list) { | |
433 | return changed; | |
434 | } | |
435 | if (!list_isempty(pim_ifp->sec_addr_list)) { | |
436 | changed = 1; | |
437 | /* remove all nodes and free up the list itself */ | |
438 | list_delete_all_node(pim_ifp->sec_addr_list); | |
439 | list_free(pim_ifp->sec_addr_list); | |
440 | pim_ifp->sec_addr_list = NULL; | |
441 | } | |
442 | ||
443 | return changed; | |
7176984f | 444 | } |
445 | ||
446 | static int pim_sec_addr_update(struct interface *ifp) | |
447 | { | |
d62a17ae | 448 | struct pim_interface *pim_ifp = ifp->info; |
449 | struct connected *ifc; | |
450 | struct listnode *node; | |
451 | struct listnode *nextnode; | |
452 | struct pim_secondary_addr *sec_addr; | |
453 | int changed = 0; | |
454 | ||
455 | if (pim_ifp->sec_addr_list) { | |
456 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, | |
457 | sec_addr)) { | |
458 | sec_addr->flags |= PIM_SEC_ADDRF_STALE; | |
459 | } | |
460 | } | |
461 | ||
462 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
463 | struct prefix *p = ifc->address; | |
464 | ||
465 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
466 | continue; | |
467 | } | |
468 | ||
469 | if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) { | |
470 | /* don't add the primary address into the secondary | |
471 | * address list */ | |
472 | continue; | |
473 | } | |
474 | ||
475 | if (pim_sec_addr_add(pim_ifp, p)) { | |
476 | changed = 1; | |
477 | } | |
478 | } | |
479 | ||
480 | if (pim_ifp->sec_addr_list) { | |
481 | /* Drop stale entries */ | |
482 | for (ALL_LIST_ELEMENTS(pim_ifp->sec_addr_list, node, nextnode, | |
483 | sec_addr)) { | |
484 | if (sec_addr->flags & PIM_SEC_ADDRF_STALE) { | |
485 | pim_sec_addr_del(pim_ifp, sec_addr); | |
486 | changed = 1; | |
487 | } | |
488 | } | |
489 | ||
490 | /* If the list went empty free it up */ | |
491 | if (list_isempty(pim_ifp->sec_addr_list)) { | |
492 | list_free(pim_ifp->sec_addr_list); | |
493 | pim_ifp->sec_addr_list = NULL; | |
494 | } | |
495 | } | |
496 | ||
497 | return changed; | |
7176984f | 498 | } |
499 | ||
4763cd0e | 500 | static int detect_secondary_address_change(struct interface *ifp, |
d62a17ae | 501 | int force_prim_as_any, |
502 | const char *caller) | |
12e41d03 | 503 | { |
d62a17ae | 504 | struct pim_interface *pim_ifp = ifp->info; |
505 | int changed = 0; | |
506 | ||
507 | if (force_prim_as_any) { | |
508 | /* if primary address is being forced to zero just flush the | |
509 | * secondary address list */ | |
510 | changed = pim_sec_addr_del_all(pim_ifp); | |
511 | } else { | |
512 | /* re-evaluate the secondary address list */ | |
513 | changed = pim_sec_addr_update(ifp); | |
514 | } | |
515 | ||
516 | return changed; | |
4763cd0e | 517 | } |
518 | ||
d62a17ae | 519 | static void detect_address_change(struct interface *ifp, int force_prim_as_any, |
520 | const char *caller) | |
4763cd0e | 521 | { |
d62a17ae | 522 | int changed = 0; |
523 | struct pim_interface *pim_ifp; | |
12e41d03 | 524 | |
d62a17ae | 525 | pim_ifp = ifp->info; |
526 | if (!pim_ifp) | |
527 | return; | |
4763cd0e | 528 | |
d62a17ae | 529 | if (detect_primary_address_change(ifp, force_prim_as_any, caller)) { |
530 | changed = 1; | |
531 | } | |
12e41d03 | 532 | |
d62a17ae | 533 | if (detect_secondary_address_change(ifp, force_prim_as_any, caller)) { |
534 | changed = 1; | |
535 | } | |
4763cd0e | 536 | |
537 | ||
d62a17ae | 538 | if (changed) { |
539 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
540 | return; | |
541 | } | |
4763cd0e | 542 | |
d62a17ae | 543 | pim_addr_change(ifp); |
544 | } | |
12e41d03 | 545 | |
d62a17ae | 546 | /* XXX: if we have unnumbered interfaces we need to run detect address |
547 | * address change on all of them when the lo address changes */ | |
12e41d03 DL |
548 | } |
549 | ||
4763cd0e | 550 | int pim_update_source_set(struct interface *ifp, struct in_addr source) |
12e41d03 | 551 | { |
d62a17ae | 552 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 553 | |
d62a17ae | 554 | if (!pim_ifp) { |
555 | return PIM_IFACE_NOT_FOUND; | |
556 | } | |
12e41d03 | 557 | |
d62a17ae | 558 | if (pim_ifp->update_source.s_addr == source.s_addr) { |
559 | return PIM_UPDATE_SOURCE_DUP; | |
560 | } | |
4763cd0e | 561 | |
d62a17ae | 562 | pim_ifp->update_source = source; |
563 | detect_address_change(ifp, 0 /* force_prim_as_any */, | |
564 | __PRETTY_FUNCTION__); | |
4763cd0e | 565 | |
d62a17ae | 566 | return PIM_SUCCESS; |
12e41d03 DL |
567 | } |
568 | ||
569 | void pim_if_addr_add(struct connected *ifc) | |
570 | { | |
d62a17ae | 571 | struct pim_interface *pim_ifp; |
572 | struct interface *ifp; | |
573 | struct in_addr ifaddr; | |
574 | ||
575 | zassert(ifc); | |
576 | ||
577 | ifp = ifc->ifp; | |
578 | zassert(ifp); | |
579 | pim_ifp = ifp->info; | |
580 | if (!pim_ifp) | |
581 | return; | |
582 | ||
583 | if (!if_is_operative(ifp)) | |
584 | return; | |
585 | ||
586 | if (PIM_DEBUG_ZEBRA) { | |
587 | char buf[BUFSIZ]; | |
588 | prefix2str(ifc->address, buf, BUFSIZ); | |
589 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
590 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
591 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
592 | ? "secondary" | |
593 | : "primary"); | |
594 | } | |
595 | ||
596 | ifaddr = ifc->address->u.prefix4; | |
597 | ||
598 | detect_address_change(ifp, 0, __PRETTY_FUNCTION__); | |
599 | ||
600 | if (ifc->address->family != AF_INET) | |
601 | return; | |
602 | ||
603 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { | |
604 | struct igmp_sock *igmp; | |
605 | ||
606 | /* lookup IGMP socket */ | |
607 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
608 | ifaddr); | |
609 | if (!igmp) { | |
610 | /* if addr new, add IGMP socket */ | |
611 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, | |
612 | ifp); | |
613 | } | |
614 | ||
615 | /* Replay Static IGMP groups */ | |
616 | if (pim_ifp->igmp_join_list) { | |
617 | struct listnode *node; | |
618 | struct listnode *nextnode; | |
619 | struct igmp_join *ij; | |
620 | int join_fd; | |
621 | ||
622 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, | |
623 | nextnode, ij)) { | |
624 | /* Close socket and reopen with Source and Group | |
625 | */ | |
626 | close(ij->sock_fd); | |
627 | join_fd = igmp_join_sock( | |
628 | ifp->name, ifp->ifindex, ij->group_addr, | |
629 | ij->source_addr); | |
630 | if (join_fd < 0) { | |
631 | char group_str[INET_ADDRSTRLEN]; | |
632 | char source_str[INET_ADDRSTRLEN]; | |
633 | pim_inet4_dump("<grp?>", ij->group_addr, | |
634 | group_str, | |
635 | sizeof(group_str)); | |
636 | pim_inet4_dump( | |
637 | "<src?>", ij->source_addr, | |
638 | source_str, sizeof(source_str)); | |
639 | zlog_warn( | |
640 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
641 | __PRETTY_FUNCTION__, group_str, | |
642 | source_str, ifp->name); | |
643 | /* warning only */ | |
644 | } else | |
645 | ij->sock_fd = join_fd; | |
646 | } | |
647 | } | |
648 | } /* igmp */ | |
649 | ||
650 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
651 | ||
652 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
653 | ||
654 | /* Interface has a valid socket ? */ | |
655 | if (pim_ifp->pim_sock_fd < 0) { | |
656 | if (pim_sock_add(ifp)) { | |
657 | zlog_warn( | |
658 | "Failure creating PIM socket for interface %s", | |
659 | ifp->name); | |
660 | } | |
661 | } | |
662 | struct pim_nexthop_cache *pnc = NULL; | |
663 | struct pim_rpf rpf; | |
664 | struct zclient *zclient = NULL; | |
665 | ||
666 | zclient = pim_zebra_zclient_get(); | |
667 | /* RP config might come prior to (local RP's interface) | |
668 | IF UP event. | |
669 | In this case, pnc would not have pim enabled | |
670 | nexthops. | |
671 | Once Interface is UP and pim info is available, | |
672 | reregister | |
673 | with RNH address to receive update and add the | |
674 | interface as nexthop. */ | |
675 | memset(&rpf, 0, sizeof(struct pim_rpf)); | |
676 | rpf.rpf_addr.family = AF_INET; | |
677 | rpf.rpf_addr.prefixlen = IPV4_MAX_BITLEN; | |
678 | rpf.rpf_addr.u.prefix4 = ifc->address->u.prefix4; | |
d0a4f55d | 679 | pnc = pim_nexthop_cache_find(pim_ifp->pim, &rpf); |
d62a17ae | 680 | if (pnc) |
cf663ceb DS |
681 | pim_sendmsg_zebra_rnh(zclient, pim_ifp->pim, |
682 | pnc, | |
d62a17ae | 683 | ZEBRA_NEXTHOP_REGISTER); |
684 | } | |
685 | } /* pim */ | |
686 | ||
687 | /* | |
688 | PIM or IGMP is enabled on interface, and there is at least one | |
689 | address assigned, then try to create a vif_index. | |
690 | */ | |
691 | if (pim_ifp->mroute_vif_index < 0) { | |
692 | pim_if_add_vif(ifp); | |
693 | } | |
694 | pim_ifchannel_scan_forward_start(ifp); | |
12e41d03 DL |
695 | } |
696 | ||
697 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
698 | { | |
d62a17ae | 699 | struct pim_interface *pim_ifp = ifc->ifp->info; |
700 | struct igmp_sock *igmp; | |
701 | struct in_addr ifaddr; | |
702 | ||
703 | if (ifc->address->family != AF_INET) { | |
704 | /* non-IPv4 address */ | |
705 | return; | |
706 | } | |
707 | ||
708 | if (!pim_ifp) { | |
709 | /* IGMP not enabled on interface */ | |
710 | return; | |
711 | } | |
712 | ||
713 | ifaddr = ifc->address->u.prefix4; | |
714 | ||
715 | /* lookup IGMP socket */ | |
716 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, ifaddr); | |
717 | if (igmp) { | |
718 | /* if addr found, del IGMP socket */ | |
719 | igmp_sock_delete(igmp); | |
720 | } | |
12e41d03 DL |
721 | } |
722 | ||
723 | static void pim_if_addr_del_pim(struct connected *ifc) | |
724 | { | |
d62a17ae | 725 | struct pim_interface *pim_ifp = ifc->ifp->info; |
12e41d03 | 726 | |
d62a17ae | 727 | if (ifc->address->family != AF_INET) { |
728 | /* non-IPv4 address */ | |
729 | return; | |
730 | } | |
12e41d03 | 731 | |
d62a17ae | 732 | if (!pim_ifp) { |
733 | /* PIM not enabled on interface */ | |
734 | return; | |
735 | } | |
736 | ||
737 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
738 | /* Interface keeps a valid primary address */ | |
739 | return; | |
740 | } | |
12e41d03 | 741 | |
d62a17ae | 742 | if (pim_ifp->pim_sock_fd < 0) { |
743 | /* Interface does not hold a valid socket any longer */ | |
744 | return; | |
745 | } | |
294b6d72 | 746 | |
d62a17ae | 747 | /* |
748 | pim_sock_delete() closes the socket, stops read and timer threads, | |
749 | and kills all neighbors. | |
750 | */ | |
751 | pim_sock_delete(ifc->ifp, | |
752 | "last address has been removed from interface"); | |
753 | } | |
12e41d03 | 754 | |
d62a17ae | 755 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) |
756 | { | |
757 | struct interface *ifp; | |
758 | ||
759 | zassert(ifc); | |
760 | ifp = ifc->ifp; | |
761 | zassert(ifp); | |
762 | ||
763 | if (ifc->address->family != AF_INET) | |
764 | return; | |
765 | ||
766 | if (PIM_DEBUG_ZEBRA) { | |
767 | char buf[BUFSIZ]; | |
768 | prefix2str(ifc->address, buf, BUFSIZ); | |
769 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
770 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, buf, | |
771 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
772 | ? "secondary" | |
773 | : "primary"); | |
774 | } | |
12e41d03 | 775 | |
d62a17ae | 776 | detect_address_change(ifp, force_prim_as_any, __PRETTY_FUNCTION__); |
777 | ||
778 | pim_if_addr_del_igmp(ifc); | |
779 | pim_if_addr_del_pim(ifc); | |
12e41d03 DL |
780 | } |
781 | ||
782 | void pim_if_addr_add_all(struct interface *ifp) | |
783 | { | |
d62a17ae | 784 | struct connected *ifc; |
785 | struct listnode *node; | |
786 | struct listnode *nextnode; | |
787 | int v4_addrs = 0; | |
788 | int v6_addrs = 0; | |
789 | struct pim_interface *pim_ifp = ifp->info; | |
790 | ||
791 | ||
792 | /* PIM/IGMP enabled ? */ | |
793 | if (!pim_ifp) | |
794 | return; | |
795 | ||
796 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
797 | struct prefix *p = ifc->address; | |
798 | ||
799 | if (p->family != AF_INET) | |
800 | v6_addrs++; | |
801 | else | |
802 | v4_addrs++; | |
803 | pim_if_addr_add(ifc); | |
804 | } | |
d8424057 | 805 | |
d62a17ae | 806 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { |
807 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
808 | ||
809 | /* Interface has a valid primary address ? */ | |
810 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
811 | ||
812 | /* Interface has a valid socket ? */ | |
813 | if (pim_ifp->pim_sock_fd < 0) { | |
814 | if (pim_sock_add(ifp)) { | |
815 | zlog_warn( | |
816 | "Failure creating PIM socket for interface %s", | |
817 | ifp->name); | |
818 | } | |
819 | } | |
820 | } | |
821 | } /* pim */ | |
822 | } | |
823 | /* | |
824 | * PIM or IGMP is enabled on interface, and there is at least one | |
825 | * address assigned, then try to create a vif_index. | |
826 | */ | |
827 | if (pim_ifp->mroute_vif_index < 0) { | |
828 | pim_if_add_vif(ifp); | |
829 | } | |
830 | pim_ifchannel_scan_forward_start(ifp); | |
831 | ||
fec883d9 | 832 | pim_rp_setup(pim_ifp->pim); |
d62a17ae | 833 | pim_rp_check_on_if_add(pim_ifp); |
12e41d03 DL |
834 | } |
835 | ||
836 | void pim_if_addr_del_all(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; | |
12e41d03 | 845 | |
d62a17ae | 846 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { |
847 | struct prefix *p = ifc->address; | |
12e41d03 | 848 | |
d62a17ae | 849 | if (p->family != AF_INET) |
850 | continue; | |
12e41d03 | 851 | |
d62a17ae | 852 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); |
853 | } | |
da3dcffb | 854 | |
fec883d9 DS |
855 | pim_rp_setup(pimg); |
856 | pim_i_am_rp_re_evaluate(pimg); | |
12e41d03 DL |
857 | } |
858 | ||
859 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
860 | { | |
d62a17ae | 861 | struct connected *ifc; |
862 | struct listnode *node; | |
863 | struct listnode *nextnode; | |
864 | ||
865 | /* PIM/IGMP enabled ? */ | |
866 | if (!ifp->info) | |
867 | return; | |
868 | ||
869 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
870 | struct prefix *p = ifc->address; | |
871 | ||
872 | if (p->family != AF_INET) | |
873 | continue; | |
874 | ||
875 | pim_if_addr_del_igmp(ifc); | |
876 | } | |
12e41d03 DL |
877 | } |
878 | ||
879 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
880 | { | |
d62a17ae | 881 | struct connected *ifc; |
882 | struct listnode *node; | |
883 | struct listnode *nextnode; | |
884 | ||
885 | /* PIM/IGMP enabled ? */ | |
886 | if (!ifp->info) | |
887 | return; | |
888 | ||
889 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
890 | struct prefix *p = ifc->address; | |
891 | ||
892 | if (p->family != AF_INET) | |
893 | continue; | |
894 | ||
895 | pim_if_addr_del_pim(ifc); | |
896 | } | |
12e41d03 DL |
897 | } |
898 | ||
d62a17ae | 899 | struct in_addr pim_find_primary_addr(struct interface *ifp) |
12e41d03 | 900 | { |
d62a17ae | 901 | struct connected *ifc; |
902 | struct listnode *node; | |
903 | struct in_addr addr; | |
904 | int v4_addrs = 0; | |
905 | int v6_addrs = 0; | |
906 | struct pim_interface *pim_ifp = ifp->info; | |
907 | ||
908 | if (pim_ifp && PIM_INADDR_ISNOT_ANY(pim_ifp->update_source)) { | |
909 | return pim_ifp->update_source; | |
910 | } | |
911 | ||
912 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
913 | struct prefix *p = ifc->address; | |
914 | ||
915 | if (p->family != AF_INET) { | |
916 | v6_addrs++; | |
917 | continue; | |
918 | } | |
919 | ||
920 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
921 | zlog_warn( | |
922 | "%s: null IPv4 address connected to interface %s", | |
923 | __PRETTY_FUNCTION__, ifp->name); | |
924 | continue; | |
925 | } | |
926 | ||
927 | v4_addrs++; | |
928 | ||
929 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) | |
930 | continue; | |
931 | ||
932 | return p->u.prefix4; | |
933 | } | |
934 | ||
935 | /* | |
936 | * If we have no v4_addrs and v6 is configured | |
937 | * We probably are using unnumbered | |
938 | * So let's grab the loopbacks v4 address | |
939 | * and use that as the primary address | |
940 | */ | |
941 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { | |
942 | struct interface *lo_ifp; | |
fec883d9 | 943 | // DBS - Come back and check here |
0708beb1 | 944 | lo_ifp = if_lookup_by_name("lo", pimg->vrf_id); |
d62a17ae | 945 | if (lo_ifp) |
946 | return pim_find_primary_addr(lo_ifp); | |
947 | } | |
948 | ||
949 | addr.s_addr = PIM_NET_INADDR_ANY; | |
950 | ||
951 | return addr; | |
12e41d03 DL |
952 | } |
953 | ||
d62a17ae | 954 | static int pim_iface_next_vif_index(struct interface *ifp) |
744d91b3 | 955 | { |
d62a17ae | 956 | int i; |
957 | /* | |
958 | * The pimreg vif is always going to be in index 0 | |
959 | * of the table. | |
960 | */ | |
961 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
962 | return 0; | |
963 | ||
964 | for (i = 1; i < MAXVIFS; i++) { | |
965 | if (pim_iface_vif_index[i] == 0) | |
966 | return i; | |
967 | } | |
968 | return MAXVIFS; | |
744d91b3 DS |
969 | } |
970 | ||
12e41d03 DL |
971 | /* |
972 | pim_if_add_vif() uses ifindex as vif_index | |
973 | ||
974 | see also pim_if_find_vifindex_by_ifindex() | |
975 | */ | |
976 | int pim_if_add_vif(struct interface *ifp) | |
977 | { | |
d62a17ae | 978 | struct pim_interface *pim_ifp = ifp->info; |
979 | struct in_addr ifaddr; | |
980 | unsigned char flags = 0; | |
981 | ||
982 | zassert(pim_ifp); | |
983 | ||
984 | if (pim_ifp->mroute_vif_index > 0) { | |
985 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
986 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
987 | ifp->name, ifp->ifindex); | |
988 | return -1; | |
989 | } | |
990 | ||
991 | if (ifp->ifindex < 0) { | |
992 | zlog_warn("%s: ifindex=%d < 1 on interface %s", | |
993 | __PRETTY_FUNCTION__, ifp->ifindex, ifp->name); | |
994 | return -2; | |
995 | } | |
996 | ||
997 | ifaddr = pim_ifp->primary_address; | |
998 | if (ifp->ifindex != PIM_OIF_PIM_REGISTER_VIF | |
999 | && PIM_INADDR_IS_ANY(ifaddr)) { | |
1000 | zlog_warn( | |
1001 | "%s: could not get address for interface %s ifindex=%d", | |
1002 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex); | |
1003 | return -4; | |
1004 | } | |
1005 | ||
1006 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index(ifp); | |
1007 | ||
1008 | if (pim_ifp->mroute_vif_index >= MAXVIFS) { | |
1009 | zlog_warn( | |
1010 | "%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
1011 | __PRETTY_FUNCTION__, MAXVIFS, ifp->name); | |
1012 | return -3; | |
1013 | } | |
1014 | ||
1015 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
1016 | flags = VIFF_REGISTER; | |
b3f2bf7c | 1017 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 1018 | else |
1019 | flags = VIFF_USE_IFINDEX; | |
b3f2bf7c RW |
1020 | #endif |
1021 | ||
d62a17ae | 1022 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
1023 | /* pim_mroute_add_vif reported error */ | |
1024 | return -5; | |
1025 | } | |
12e41d03 | 1026 | |
d62a17ae | 1027 | pim_iface_vif_index[pim_ifp->mroute_vif_index] = 1; |
1028 | return 0; | |
12e41d03 DL |
1029 | } |
1030 | ||
12e41d03 DL |
1031 | int pim_if_del_vif(struct interface *ifp) |
1032 | { | |
d62a17ae | 1033 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 1034 | |
d62a17ae | 1035 | if (pim_ifp->mroute_vif_index < 1) { |
1036 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
1037 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, | |
1038 | ifp->name, ifp->ifindex); | |
1039 | return -1; | |
1040 | } | |
12e41d03 | 1041 | |
ea3d967b | 1042 | pim_mroute_del_vif(ifp); |
12e41d03 | 1043 | |
d62a17ae | 1044 | /* |
1045 | Update vif_index | |
1046 | */ | |
1047 | pim_iface_vif_index[pim_ifp->mroute_vif_index] = 0; | |
12e41d03 | 1048 | |
d62a17ae | 1049 | pim_ifp->mroute_vif_index = -1; |
12e41d03 | 1050 | |
d62a17ae | 1051 | return 0; |
12e41d03 DL |
1052 | } |
1053 | ||
1054 | void pim_if_add_vif_all() | |
1055 | { | |
d62a17ae | 1056 | struct listnode *ifnode; |
1057 | struct listnode *ifnextnode; | |
1058 | struct interface *ifp; | |
12e41d03 | 1059 | |
0708beb1 | 1060 | for (ALL_LIST_ELEMENTS(vrf_iflist(pimg->vrf_id), ifnode, ifnextnode, |
d62a17ae | 1061 | ifp)) { |
1062 | if (!ifp->info) | |
1063 | continue; | |
12e41d03 | 1064 | |
d62a17ae | 1065 | pim_if_add_vif(ifp); |
1066 | } | |
12e41d03 DL |
1067 | } |
1068 | ||
1069 | void pim_if_del_vif_all() | |
1070 | { | |
d62a17ae | 1071 | struct listnode *ifnode; |
1072 | struct listnode *ifnextnode; | |
1073 | struct interface *ifp; | |
12e41d03 | 1074 | |
0708beb1 | 1075 | for (ALL_LIST_ELEMENTS(vrf_iflist(pimg->vrf_id), ifnode, ifnextnode, |
d62a17ae | 1076 | ifp)) { |
1077 | if (!ifp->info) | |
1078 | continue; | |
12e41d03 | 1079 | |
d62a17ae | 1080 | pim_if_del_vif(ifp); |
1081 | } | |
12e41d03 DL |
1082 | } |
1083 | ||
da82728d | 1084 | // DBS - VRF Revist |
b892f1dd | 1085 | struct interface *pim_if_find_by_vif_index(ifindex_t vif_index) |
12e41d03 | 1086 | { |
d62a17ae | 1087 | struct listnode *ifnode; |
1088 | struct interface *ifp; | |
da82728d DS |
1089 | struct pim_instance *pim; |
1090 | struct vrf *vrf; | |
12e41d03 | 1091 | |
da82728d DS |
1092 | RB_FOREACH(vrf, vrf_name_head, &vrfs_by_name) |
1093 | { | |
1094 | pim = vrf->info; | |
1095 | if (!pim) | |
1096 | continue; | |
1097 | ||
1098 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(pim->vrf_id), ifnode, | |
1099 | ifp)) { | |
1100 | if (ifp->info) { | |
1101 | struct pim_interface *pim_ifp; | |
1102 | pim_ifp = ifp->info; | |
b892f1dd | 1103 | |
da82728d DS |
1104 | if (vif_index == pim_ifp->mroute_vif_index) |
1105 | return ifp; | |
1106 | } | |
d62a17ae | 1107 | } |
1108 | } | |
12e41d03 | 1109 | |
d62a17ae | 1110 | return 0; |
12e41d03 DL |
1111 | } |
1112 | ||
1113 | /* | |
1114 | pim_if_add_vif() uses ifindex as vif_index | |
1115 | */ | |
b892f1dd | 1116 | int pim_if_find_vifindex_by_ifindex(ifindex_t ifindex) |
12e41d03 | 1117 | { |
d62a17ae | 1118 | struct pim_interface *pim_ifp; |
1119 | struct interface *ifp; | |
ae90dfbb | 1120 | |
0708beb1 | 1121 | ifp = if_lookup_by_index(ifindex, pimg->vrf_id); |
d62a17ae | 1122 | if (!ifp || !ifp->info) |
1123 | return -1; | |
1124 | pim_ifp = ifp->info; | |
ae90dfbb | 1125 | |
d62a17ae | 1126 | return pim_ifp->mroute_vif_index; |
12e41d03 DL |
1127 | } |
1128 | ||
1129 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
1130 | { | |
d62a17ae | 1131 | struct pim_interface *pim_ifp; |
12e41d03 | 1132 | |
d62a17ae | 1133 | pim_ifp = ifp->info; |
1134 | zassert(pim_ifp); | |
1135 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
12e41d03 | 1136 | |
d62a17ae | 1137 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; |
12e41d03 DL |
1138 | } |
1139 | ||
1140 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
1141 | { | |
d62a17ae | 1142 | if (pim_if_lan_delay_enabled(ifp)) { |
1143 | struct pim_interface *pim_ifp; | |
1144 | pim_ifp = ifp->info; | |
1145 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
1146 | } else { | |
1147 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
1148 | } | |
12e41d03 DL |
1149 | } |
1150 | ||
1151 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
1152 | { | |
d62a17ae | 1153 | if (pim_if_lan_delay_enabled(ifp)) { |
1154 | struct pim_interface *pim_ifp; | |
1155 | pim_ifp = ifp->info; | |
1156 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
1157 | } else { | |
1158 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
1159 | } | |
12e41d03 DL |
1160 | } |
1161 | ||
1162 | int pim_if_t_override_msec(struct interface *ifp) | |
1163 | { | |
d62a17ae | 1164 | int effective_override_interval_msec; |
1165 | int t_override_msec; | |
12e41d03 | 1166 | |
d62a17ae | 1167 | effective_override_interval_msec = |
1168 | pim_if_effective_override_interval_msec(ifp); | |
12e41d03 | 1169 | |
d62a17ae | 1170 | t_override_msec = random() % (effective_override_interval_msec + 1); |
12e41d03 | 1171 | |
d62a17ae | 1172 | return t_override_msec; |
12e41d03 DL |
1173 | } |
1174 | ||
1175 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
1176 | { | |
d62a17ae | 1177 | return pim_if_effective_propagation_delay_msec(ifp) |
1178 | + pim_if_effective_override_interval_msec(ifp); | |
12e41d03 DL |
1179 | } |
1180 | ||
1181 | /* | |
1182 | RFC 4601: 4.1.6. State Summarization Macros | |
1183 | ||
1184 | The function NBR( I, A ) uses information gathered through PIM Hello | |
1185 | messages to map the IP address A of a directly connected PIM | |
1186 | neighbor router on interface I to the primary IP address of the same | |
1187 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
1188 | address that it uses as the source of its PIM Hello messages. | |
1189 | */ | |
1190 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
1191 | struct in_addr addr) | |
1192 | { | |
d62a17ae | 1193 | struct listnode *neighnode; |
1194 | struct pim_neighbor *neigh; | |
1195 | struct pim_interface *pim_ifp; | |
1196 | struct prefix p; | |
1197 | ||
1198 | zassert(ifp); | |
1199 | ||
1200 | pim_ifp = ifp->info; | |
1201 | if (!pim_ifp) { | |
1202 | zlog_warn("%s: multicast not enabled on interface %s", | |
1203 | __PRETTY_FUNCTION__, ifp->name); | |
1204 | return 0; | |
1205 | } | |
1206 | ||
1207 | p.family = AF_INET; | |
1208 | p.u.prefix4 = addr; | |
1209 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
1210 | ||
1211 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, | |
1212 | neigh)) { | |
1213 | ||
1214 | /* primary address ? */ | |
1215 | if (neigh->source_addr.s_addr == addr.s_addr) | |
1216 | return neigh; | |
1217 | ||
1218 | /* secondary address ? */ | |
1219 | if (pim_neighbor_find_secondary(neigh, &p)) | |
1220 | return neigh; | |
1221 | } | |
1222 | ||
1223 | if (PIM_DEBUG_PIM_TRACE) { | |
1224 | char addr_str[INET_ADDRSTRLEN]; | |
1225 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); | |
1226 | zlog_debug( | |
1227 | "%s: neighbor not found for address %s on interface %s", | |
1228 | __PRETTY_FUNCTION__, addr_str, ifp->name); | |
1229 | } | |
1230 | ||
1231 | return NULL; | |
12e41d03 DL |
1232 | } |
1233 | ||
1234 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
1235 | { | |
d62a17ae | 1236 | struct pim_interface *pim_ifp; |
1237 | long t_suppressed_msec; | |
1238 | uint32_t ramount = 0; | |
12e41d03 | 1239 | |
d62a17ae | 1240 | pim_ifp = ifp->info; |
1241 | zassert(pim_ifp); | |
12e41d03 | 1242 | |
d62a17ae | 1243 | /* join suppression disabled ? */ |
1244 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
1245 | return 0; | |
12e41d03 | 1246 | |
d62a17ae | 1247 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ |
1248 | ramount = 1100 + (random() % (1400 - 1100 + 1)); | |
1249 | t_suppressed_msec = qpim_t_periodic * ramount; | |
12e41d03 | 1250 | |
d62a17ae | 1251 | return t_suppressed_msec; |
12e41d03 DL |
1252 | } |
1253 | ||
1254 | static void igmp_join_free(struct igmp_join *ij) | |
1255 | { | |
d62a17ae | 1256 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); |
12e41d03 DL |
1257 | } |
1258 | ||
1259 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
1260 | struct in_addr group_addr, | |
1261 | struct in_addr source_addr) | |
1262 | { | |
d62a17ae | 1263 | struct listnode *node; |
1264 | struct igmp_join *ij; | |
12e41d03 | 1265 | |
d62a17ae | 1266 | zassert(join_list); |
12e41d03 | 1267 | |
d62a17ae | 1268 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { |
1269 | if ((group_addr.s_addr == ij->group_addr.s_addr) | |
1270 | && (source_addr.s_addr == ij->source_addr.s_addr)) | |
1271 | return ij; | |
1272 | } | |
12e41d03 | 1273 | |
d62a17ae | 1274 | return 0; |
12e41d03 DL |
1275 | } |
1276 | ||
d62a17ae | 1277 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
1278 | struct in_addr group_addr, struct in_addr source_addr) | |
12e41d03 | 1279 | { |
d62a17ae | 1280 | int join_fd; |
12e41d03 | 1281 | |
d62a17ae | 1282 | join_fd = pim_socket_raw(IPPROTO_IGMP); |
1283 | if (join_fd < 0) { | |
1284 | return -1; | |
1285 | } | |
12e41d03 | 1286 | |
d62a17ae | 1287 | if (pim_socket_join_source(join_fd, ifindex, group_addr, source_addr, |
1288 | ifname)) { | |
1289 | close(join_fd); | |
1290 | return -2; | |
1291 | } | |
12e41d03 | 1292 | |
d62a17ae | 1293 | return join_fd; |
12e41d03 DL |
1294 | } |
1295 | ||
1296 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1297 | struct in_addr group_addr, | |
1298 | struct in_addr source_addr) | |
1299 | { | |
d62a17ae | 1300 | struct pim_interface *pim_ifp; |
1301 | struct igmp_join *ij; | |
1302 | int join_fd; | |
1303 | ||
1304 | pim_ifp = ifp->info; | |
1305 | zassert(pim_ifp); | |
1306 | ||
1307 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, | |
1308 | source_addr); | |
1309 | if (join_fd < 0) { | |
1310 | char group_str[INET_ADDRSTRLEN]; | |
1311 | char source_str[INET_ADDRSTRLEN]; | |
1312 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1313 | sizeof(group_str)); | |
1314 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1315 | sizeof(source_str)); | |
1316 | zlog_warn( | |
1317 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
1318 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); | |
1323 | if (!ij) { | |
1324 | char group_str[INET_ADDRSTRLEN]; | |
1325 | char source_str[INET_ADDRSTRLEN]; | |
1326 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1327 | sizeof(group_str)); | |
1328 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1329 | sizeof(source_str)); | |
1330 | zlog_err( | |
1331 | "%s: XCALLOC(%zu) failure for IGMP group %s source %s on interface %s", | |
1332 | __PRETTY_FUNCTION__, sizeof(*ij), group_str, source_str, | |
1333 | ifp->name); | |
1334 | close(join_fd); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | ij->sock_fd = join_fd; | |
1339 | ij->group_addr = group_addr; | |
1340 | ij->source_addr = source_addr; | |
1341 | ij->sock_creation = pim_time_monotonic_sec(); | |
1342 | ||
1343 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1344 | ||
1345 | return ij; | |
12e41d03 DL |
1346 | } |
1347 | ||
d62a17ae | 1348 | int pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1349 | struct in_addr source_addr) |
1350 | { | |
d62a17ae | 1351 | struct pim_interface *pim_ifp; |
1352 | struct igmp_join *ij; | |
1353 | ||
1354 | pim_ifp = ifp->info; | |
1355 | if (!pim_ifp) { | |
1356 | zlog_warn("%s: multicast not enabled on interface %s", | |
1357 | __PRETTY_FUNCTION__, ifp->name); | |
1358 | return -1; | |
1359 | } | |
1360 | ||
1361 | if (!pim_ifp->igmp_join_list) { | |
1362 | pim_ifp->igmp_join_list = list_new(); | |
1363 | if (!pim_ifp->igmp_join_list) { | |
1364 | zlog_err("%s %s: failure: igmp_join_list=list_new()", | |
1365 | __FILE__, __PRETTY_FUNCTION__); | |
1366 | return -2; | |
1367 | } | |
1368 | pim_ifp->igmp_join_list->del = (void (*)(void *))igmp_join_free; | |
1369 | } | |
1370 | ||
1371 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1372 | if (ij) { | |
1373 | char group_str[INET_ADDRSTRLEN]; | |
1374 | char source_str[INET_ADDRSTRLEN]; | |
1375 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1376 | sizeof(group_str)); | |
1377 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1378 | sizeof(source_str)); | |
1379 | zlog_warn( | |
1380 | "%s: can't re-join existing IGMP group %s source %s on interface %s", | |
1381 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1382 | return -3; | |
1383 | } | |
1384 | ||
1385 | ij = igmp_join_new(ifp, group_addr, source_addr); | |
1386 | if (!ij) { | |
1387 | char group_str[INET_ADDRSTRLEN]; | |
1388 | char source_str[INET_ADDRSTRLEN]; | |
1389 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1390 | sizeof(group_str)); | |
1391 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1392 | sizeof(source_str)); | |
1393 | zlog_warn( | |
1394 | "%s: igmp_join_new() failure for IGMP group %s source %s on interface %s", | |
1395 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1396 | return -4; | |
1397 | } | |
1398 | ||
1399 | if (PIM_DEBUG_IGMP_EVENTS) { | |
1400 | char group_str[INET_ADDRSTRLEN]; | |
1401 | char source_str[INET_ADDRSTRLEN]; | |
1402 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1403 | sizeof(group_str)); | |
1404 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1405 | sizeof(source_str)); | |
1406 | zlog_debug( | |
1407 | "%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
1408 | __PRETTY_FUNCTION__, source_str, group_str, ifp->name); | |
1409 | } | |
12e41d03 | 1410 | |
d62a17ae | 1411 | return 0; |
1412 | } | |
12e41d03 DL |
1413 | |
1414 | ||
d62a17ae | 1415 | int pim_if_igmp_join_del(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1416 | struct in_addr source_addr) |
1417 | { | |
d62a17ae | 1418 | struct pim_interface *pim_ifp; |
1419 | struct igmp_join *ij; | |
1420 | ||
1421 | pim_ifp = ifp->info; | |
1422 | if (!pim_ifp) { | |
1423 | zlog_warn("%s: multicast not enabled on interface %s", | |
1424 | __PRETTY_FUNCTION__, ifp->name); | |
1425 | return -1; | |
1426 | } | |
1427 | ||
1428 | if (!pim_ifp->igmp_join_list) { | |
1429 | zlog_warn("%s: no IGMP join on interface %s", | |
1430 | __PRETTY_FUNCTION__, ifp->name); | |
1431 | return -2; | |
1432 | } | |
1433 | ||
1434 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1435 | if (!ij) { | |
1436 | char group_str[INET_ADDRSTRLEN]; | |
1437 | char source_str[INET_ADDRSTRLEN]; | |
1438 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1439 | sizeof(group_str)); | |
1440 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1441 | sizeof(source_str)); | |
1442 | zlog_warn( | |
1443 | "%s: could not find IGMP group %s source %s on interface %s", | |
1444 | __PRETTY_FUNCTION__, group_str, source_str, ifp->name); | |
1445 | return -3; | |
1446 | } | |
1447 | ||
1448 | if (close(ij->sock_fd)) { | |
1449 | char group_str[INET_ADDRSTRLEN]; | |
1450 | char source_str[INET_ADDRSTRLEN]; | |
1451 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1452 | sizeof(group_str)); | |
1453 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1454 | sizeof(source_str)); | |
1455 | zlog_warn( | |
1456 | "%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
1457 | __PRETTY_FUNCTION__, ij->sock_fd, group_str, source_str, | |
1458 | ifp->name, errno, safe_strerror(errno)); | |
1459 | /* warning only */ | |
1460 | } | |
1461 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1462 | igmp_join_free(ij); | |
1463 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
1464 | list_delete(pim_ifp->igmp_join_list); | |
1465 | pim_ifp->igmp_join_list = 0; | |
1466 | } | |
1467 | ||
1468 | return 0; | |
12e41d03 DL |
1469 | } |
1470 | ||
1471 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1472 | { | |
d62a17ae | 1473 | struct pim_interface *pim_ifp; |
1474 | struct listnode *node; | |
1475 | struct listnode *nextnode; | |
1476 | struct igmp_join *ij; | |
1477 | ||
1478 | pim_ifp = ifp->info; | |
1479 | if (!pim_ifp) { | |
1480 | zlog_warn("%s: multicast not enabled on interface %s", | |
1481 | __PRETTY_FUNCTION__, ifp->name); | |
1482 | return; | |
1483 | } | |
1484 | ||
1485 | if (!pim_ifp->igmp_join_list) | |
1486 | return; | |
1487 | ||
1488 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1489 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
12e41d03 DL |
1490 | } |
1491 | ||
1492 | /* | |
1493 | RFC 4601 | |
1494 | ||
1495 | Transitions from "I am Assert Loser" State | |
1496 | ||
1497 | Current Winner's GenID Changes or NLT Expires | |
1498 | ||
1499 | The Neighbor Liveness Timer associated with the current winner | |
1500 | expires or we receive a Hello message from the current winner | |
1501 | reporting a different GenID from the one it previously reported. | |
1502 | This indicates that the current winner's interface or router has | |
1503 | gone down (and may have come back up), and so we must assume it no | |
1504 | longer knows it was the winner. | |
1505 | */ | |
1506 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1507 | struct in_addr neigh_addr) | |
1508 | { | |
d62a17ae | 1509 | struct pim_interface *pim_ifp; |
1510 | struct listnode *node; | |
1511 | struct listnode *next_node; | |
1512 | struct pim_ifchannel *ch; | |
1513 | ||
1514 | pim_ifp = ifp->info; | |
1515 | zassert(pim_ifp); | |
1516 | ||
1517 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, | |
1518 | ch)) { | |
1519 | /* Is (S,G,I) assert loser ? */ | |
1520 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1521 | continue; | |
1522 | /* Dead neighbor was winner ? */ | |
1523 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1524 | continue; | |
1525 | ||
1526 | assert_action_a5(ch); | |
1527 | } | |
12e41d03 DL |
1528 | } |
1529 | ||
1530 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1531 | { | |
d62a17ae | 1532 | struct listnode *ch_node; |
1533 | struct pim_ifchannel *ch; | |
12e41d03 | 1534 | |
d62a17ae | 1535 | /* clear off flag from interface's upstreams */ |
1536 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1537 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED( | |
1538 | ch->upstream->flags); | |
1539 | } | |
12e41d03 | 1540 | |
d62a17ae | 1541 | /* scan per-interface (S,G,I) state on this I interface */ |
1542 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1543 | struct pim_upstream *up = ch->upstream; | |
12e41d03 | 1544 | |
d62a17ae | 1545 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) |
1546 | continue; | |
12e41d03 | 1547 | |
d62a17ae | 1548 | /* update join_desired for the global (S,G) state */ |
1549 | pim_upstream_update_join_desired(up); | |
1550 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); | |
1551 | } | |
12e41d03 DL |
1552 | } |
1553 | ||
1554 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1555 | { | |
d62a17ae | 1556 | struct pim_interface *pim_ifp; |
1557 | struct listnode *node; | |
1558 | struct listnode *next_node; | |
1559 | struct pim_ifchannel *ch; | |
1560 | ||
1561 | pim_ifp = ifp->info; | |
1562 | if (!pim_ifp) | |
1563 | return; | |
1564 | ||
1565 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, | |
1566 | ch)) { | |
1567 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1568 | } | |
12e41d03 | 1569 | } |
c992c9a0 DS |
1570 | |
1571 | /* | |
1572 | * PIM wants to have an interface pointer for everything it does. | |
1573 | * The pimreg is a special interface that we have that is not | |
1574 | * quite an inteface but a VIF is created for it. | |
1575 | */ | |
43e40fdf | 1576 | void pim_if_create_pimreg(struct pim_instance *pim) |
c992c9a0 | 1577 | { |
afa2b179 | 1578 | char pimreg_name[100]; |
c992c9a0 | 1579 | |
43e40fdf | 1580 | if (!pim->regiface) { |
afa2b179 DS |
1581 | if (pim->vrf_id == VRF_DEFAULT) |
1582 | strcpy(pimreg_name, "pimreg"); | |
1583 | else | |
1584 | sprintf(pimreg_name, "pimreg%d", | |
1585 | pim->vrf->data.l.table_id); | |
1586 | ||
1587 | pim->regiface = if_create(pimreg_name, strlen(pimreg_name), | |
1588 | pim->vrf_id); | |
43e40fdf DS |
1589 | pim->regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; |
1590 | ||
1591 | pim_if_new(pim->regiface, 0, 0); | |
d62a17ae | 1592 | } |
c992c9a0 | 1593 | } |
3565202d | 1594 | |
d62a17ae | 1595 | int pim_if_connected_to_source(struct interface *ifp, struct in_addr src) |
3565202d | 1596 | { |
d62a17ae | 1597 | struct listnode *cnode; |
1598 | struct connected *c; | |
1599 | struct prefix p; | |
1600 | ||
1601 | if (!ifp) | |
1602 | return 0; | |
1603 | ||
1604 | p.family = AF_INET; | |
1605 | p.u.prefix4 = src; | |
1606 | p.prefixlen = IPV4_MAX_BITLEN; | |
1607 | ||
1608 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
1609 | if ((c->address->family == AF_INET) | |
1610 | && prefix_match(CONNECTED_PREFIX(c), &p)) { | |
1611 | return 1; | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | return 0; | |
3565202d | 1616 | } |
9f0edbc9 | 1617 | |
d62a17ae | 1618 | struct interface *pim_if_lookup_address_vrf(struct in_addr src, vrf_id_t vrf_id) |
9f0edbc9 | 1619 | { |
d62a17ae | 1620 | struct listnode *ifnode; |
1621 | struct interface *ifp; | |
1622 | ||
1623 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(vrf_id), ifnode, ifp)) { | |
1624 | if (pim_if_connected_to_source(ifp, src) && ifp->info) | |
1625 | return ifp; | |
1626 | } | |
1627 | return NULL; | |
9f0edbc9 | 1628 | } |