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12e41d03 DL |
1 | /* |
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 | |
15 | along with this program; see the file COPYING; if not, write to the | |
16 | Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
17 | MA 02110-1301 USA | |
18 | ||
12e41d03 DL |
19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "if.h" | |
24 | #include "log.h" | |
25 | #include "vty.h" | |
26 | #include "memory.h" | |
27 | #include "prefix.h" | |
469351b3 | 28 | #include "vrf.h" |
12e41d03 DL |
29 | |
30 | #include "pimd.h" | |
31 | #include "pim_iface.h" | |
32 | #include "pim_igmp.h" | |
33 | #include "pim_mroute.h" | |
34 | #include "pim_oil.h" | |
35 | #include "pim_str.h" | |
36 | #include "pim_pim.h" | |
37 | #include "pim_neighbor.h" | |
38 | #include "pim_ifchannel.h" | |
12e41d03 DL |
39 | #include "pim_sock.h" |
40 | #include "pim_time.h" | |
41 | #include "pim_ssmpingd.h" | |
42 | ||
c992c9a0 DS |
43 | struct interface *pim_regiface = NULL; |
44 | ||
12e41d03 DL |
45 | static void pim_if_igmp_join_del_all(struct interface *ifp); |
46 | ||
47 | void pim_if_init() | |
48 | { | |
469351b3 | 49 | vrf_iflist_create(VRF_DEFAULT); |
12e41d03 DL |
50 | } |
51 | ||
52 | static void *if_list_clean(struct pim_interface *pim_ifp) | |
53 | { | |
54 | if (pim_ifp->igmp_join_list) { | |
55 | list_delete(pim_ifp->igmp_join_list); | |
56 | } | |
57 | ||
58 | if (pim_ifp->igmp_socket_list) { | |
59 | list_delete(pim_ifp->igmp_socket_list); | |
60 | } | |
61 | ||
62 | if (pim_ifp->pim_neighbor_list) { | |
63 | list_delete(pim_ifp->pim_neighbor_list); | |
64 | } | |
65 | ||
66 | if (pim_ifp->pim_ifchannel_list) { | |
67 | list_delete(pim_ifp->pim_ifchannel_list); | |
68 | } | |
69 | ||
70 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); | |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
bbd64ce1 DW |
75 | static int |
76 | pim_ifchannel_compare (struct pim_ifchannel *ch1, struct pim_ifchannel *ch2) | |
77 | { | |
78 | if (ntohl(ch1->sg.grp.s_addr) < ntohl(ch2->sg.grp.s_addr)) | |
79 | return -1; | |
80 | ||
81 | if (ntohl(ch1->sg.grp.s_addr) > ntohl(ch2->sg.grp.s_addr)) | |
82 | return 1; | |
83 | ||
84 | if (ntohl(ch1->sg.src.s_addr) < ntohl(ch2->sg.src.s_addr)) | |
85 | return -1; | |
86 | ||
87 | if (ntohl(ch1->sg.src.s_addr) > ntohl(ch2->sg.src.s_addr)) | |
88 | return 1; | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
12e41d03 DL |
93 | struct pim_interface *pim_if_new(struct interface *ifp, int igmp, int pim) |
94 | { | |
95 | struct pim_interface *pim_ifp; | |
96 | ||
97 | zassert(ifp); | |
98 | zassert(!ifp->info); | |
99 | ||
36d9e7dc | 100 | pim_ifp = XCALLOC(MTYPE_PIM_INTERFACE, sizeof(*pim_ifp)); |
12e41d03 | 101 | if (!pim_ifp) { |
36d9e7dc | 102 | zlog_err("PIM XCALLOC(%zu) failure", sizeof(*pim_ifp)); |
12e41d03 DL |
103 | return 0; |
104 | } | |
105 | ||
106 | pim_ifp->options = 0; | |
107 | pim_ifp->mroute_vif_index = -1; | |
108 | ||
b05b72e8 | 109 | pim_ifp->igmp_version = IGMP_DEFAULT_VERSION; |
12e41d03 DL |
110 | pim_ifp->igmp_default_robustness_variable = IGMP_DEFAULT_ROBUSTNESS_VARIABLE; |
111 | pim_ifp->igmp_default_query_interval = IGMP_GENERAL_QUERY_INTERVAL; | |
112 | pim_ifp->igmp_query_max_response_time_dsec = IGMP_QUERY_MAX_RESPONSE_TIME_DSEC; | |
113 | pim_ifp->igmp_specific_query_max_response_time_dsec = IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC; | |
114 | ||
115 | /* | |
116 | RFC 3376: 8.3. Query Response Interval | |
117 | The number of seconds represented by the [Query Response Interval] | |
118 | must be less than the [Query Interval]. | |
119 | */ | |
120 | zassert(pim_ifp->igmp_query_max_response_time_dsec < pim_ifp->igmp_default_query_interval); | |
121 | ||
122 | if (pim) | |
123 | PIM_IF_DO_PIM(pim_ifp->options); | |
124 | if (igmp) | |
125 | PIM_IF_DO_IGMP(pim_ifp->options); | |
126 | ||
127 | #if 0 | |
128 | /* FIXME: Should join? */ | |
129 | PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(pim_ifp->options); | |
130 | #endif | |
131 | ||
59ba0ac3 DS |
132 | pim_ifp->igmp_join_list = NULL; |
133 | pim_ifp->igmp_socket_list = NULL; | |
134 | pim_ifp->pim_neighbor_list = NULL; | |
135 | pim_ifp->pim_ifchannel_list = NULL; | |
e4cc0185 | 136 | pim_ifp->pim_generation_id = 0; |
12e41d03 DL |
137 | |
138 | /* list of struct igmp_sock */ | |
139 | pim_ifp->igmp_socket_list = list_new(); | |
140 | if (!pim_ifp->igmp_socket_list) { | |
141 | zlog_err("%s %s: failure: igmp_socket_list=list_new()", | |
142 | __FILE__, __PRETTY_FUNCTION__); | |
143 | return if_list_clean(pim_ifp); | |
144 | } | |
145 | pim_ifp->igmp_socket_list->del = (void (*)(void *)) igmp_sock_free; | |
146 | ||
147 | /* list of struct pim_neighbor */ | |
148 | pim_ifp->pim_neighbor_list = list_new(); | |
149 | if (!pim_ifp->pim_neighbor_list) { | |
150 | zlog_err("%s %s: failure: pim_neighbor_list=list_new()", | |
151 | __FILE__, __PRETTY_FUNCTION__); | |
152 | return if_list_clean(pim_ifp); | |
153 | } | |
154 | pim_ifp->pim_neighbor_list->del = (void (*)(void *)) pim_neighbor_free; | |
155 | ||
156 | /* list of struct pim_ifchannel */ | |
157 | pim_ifp->pim_ifchannel_list = list_new(); | |
158 | if (!pim_ifp->pim_ifchannel_list) { | |
159 | zlog_err("%s %s: failure: pim_ifchannel_list=list_new()", | |
160 | __FILE__, __PRETTY_FUNCTION__); | |
161 | return if_list_clean(pim_ifp); | |
162 | } | |
163 | pim_ifp->pim_ifchannel_list->del = (void (*)(void *)) pim_ifchannel_free; | |
bbd64ce1 | 164 | pim_ifp->pim_ifchannel_list->cmp = (int (*)(void *, void *)) pim_ifchannel_compare; |
12e41d03 DL |
165 | |
166 | ifp->info = pim_ifp; | |
167 | ||
168 | pim_sock_reset(ifp); | |
169 | ||
12e41d03 DL |
170 | if (PIM_MROUTE_IS_ENABLED) { |
171 | pim_if_add_vif(ifp); | |
172 | } | |
173 | ||
174 | return pim_ifp; | |
175 | } | |
176 | ||
177 | void pim_if_delete(struct interface *ifp) | |
178 | { | |
179 | struct pim_interface *pim_ifp; | |
180 | ||
181 | zassert(ifp); | |
182 | pim_ifp = ifp->info; | |
183 | zassert(pim_ifp); | |
184 | ||
185 | if (pim_ifp->igmp_join_list) { | |
186 | pim_if_igmp_join_del_all(ifp); | |
187 | } | |
12e41d03 | 188 | |
cb24fec4 DS |
189 | pim_ifchannel_delete_all (ifp); |
190 | igmp_sock_delete_all (ifp); | |
12e41d03 | 191 | |
cb24fec4 | 192 | pim_neighbor_delete_all (ifp, "Interface removed from configuration"); |
12e41d03 DL |
193 | |
194 | if (PIM_MROUTE_IS_ENABLED) { | |
195 | pim_if_del_vif(ifp); | |
196 | } | |
197 | ||
198 | list_delete(pim_ifp->igmp_socket_list); | |
199 | list_delete(pim_ifp->pim_neighbor_list); | |
200 | list_delete(pim_ifp->pim_ifchannel_list); | |
201 | ||
202 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); | |
203 | ||
59ba0ac3 | 204 | ifp->info = NULL; |
12e41d03 DL |
205 | } |
206 | ||
207 | void pim_if_update_could_assert(struct interface *ifp) | |
208 | { | |
209 | struct pim_interface *pim_ifp; | |
210 | struct listnode *node; | |
211 | struct listnode *next_node; | |
212 | struct pim_ifchannel *ch; | |
213 | ||
214 | pim_ifp = ifp->info; | |
215 | zassert(pim_ifp); | |
216 | ||
217 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
218 | pim_ifchannel_update_could_assert(ch); | |
219 | } | |
220 | } | |
221 | ||
222 | static void pim_if_update_my_assert_metric(struct interface *ifp) | |
223 | { | |
224 | struct pim_interface *pim_ifp; | |
225 | struct listnode *node; | |
226 | struct listnode *next_node; | |
227 | struct pim_ifchannel *ch; | |
228 | ||
229 | pim_ifp = ifp->info; | |
230 | zassert(pim_ifp); | |
231 | ||
232 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
233 | pim_ifchannel_update_my_assert_metric(ch); | |
234 | } | |
235 | } | |
236 | ||
237 | static void pim_addr_change(struct interface *ifp) | |
238 | { | |
239 | struct pim_interface *pim_ifp; | |
240 | ||
241 | pim_ifp = ifp->info; | |
242 | zassert(pim_ifp); | |
243 | ||
244 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- Done TODO T30 */ | |
245 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
246 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
247 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
248 | pim_if_update_assert_tracking_desired(ifp); /* depends on DR, join_desired */ | |
249 | ||
250 | /* | |
251 | RFC 4601: 4.3.1. Sending Hello Messages | |
252 | ||
253 | 1) Before an interface goes down or changes primary IP address, a | |
254 | Hello message with a zero HoldTime should be sent immediately | |
255 | (with the old IP address if the IP address changed). | |
256 | -- FIXME See CAVEAT C13 | |
257 | ||
258 | 2) After an interface has changed its IP address, it MUST send a | |
259 | Hello message with its new IP address. | |
260 | -- DONE below | |
261 | ||
262 | 3) If an interface changes one of its secondary IP addresses, a | |
263 | Hello message with an updated Address_List option and a non-zero | |
264 | HoldTime should be sent immediately. | |
265 | -- FIXME See TODO T31 | |
266 | */ | |
267 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
268 | if (pim_ifp->pim_sock_fd < 0) | |
269 | return; | |
270 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
271 | } | |
272 | ||
12e41d03 DL |
273 | static int detect_primary_address_change(struct interface *ifp, |
274 | int force_prim_as_any, | |
275 | const char *caller) | |
276 | { | |
277 | struct pim_interface *pim_ifp; | |
278 | struct in_addr new_prim_addr; | |
279 | int changed; | |
280 | ||
281 | pim_ifp = ifp->info; | |
282 | if (!pim_ifp) | |
283 | return 0; | |
284 | ||
285 | if (force_prim_as_any) | |
286 | new_prim_addr = qpim_inaddr_any; | |
287 | else | |
288 | new_prim_addr = pim_find_primary_addr(ifp); | |
289 | ||
290 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
291 | ||
292 | if (PIM_DEBUG_ZEBRA) { | |
eaa54bdb DW |
293 | char new_prim_str[INET_ADDRSTRLEN]; |
294 | char old_prim_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
295 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, sizeof(new_prim_str)); |
296 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, sizeof(old_prim_str)); | |
297 | zlog_debug("%s: old=%s new=%s on interface %s: %s", | |
298 | __PRETTY_FUNCTION__, | |
299 | old_prim_str, new_prim_str, ifp->name, | |
300 | changed ? "changed" : "unchanged"); | |
301 | } | |
302 | ||
303 | if (changed) { | |
12e41d03 DL |
304 | pim_ifp->primary_address = new_prim_addr; |
305 | ||
c5cb17ec DS |
306 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { |
307 | return changed; | |
308 | } | |
309 | ||
310 | pim_addr_change(ifp); | |
12e41d03 DL |
311 | } |
312 | ||
313 | return changed; | |
314 | } | |
315 | ||
316 | static void detect_secondary_address_change(struct interface *ifp, | |
317 | const char *caller) | |
318 | { | |
319 | struct pim_interface *pim_ifp; | |
320 | int changed; | |
321 | ||
322 | pim_ifp = ifp->info; | |
323 | if (!pim_ifp) | |
324 | return; | |
325 | ||
326 | changed = 1; /* true */ | |
c5cb17ec DS |
327 | if (PIM_DEBUG_ZEBRA) |
328 | zlog_debug("FIXME T31 C15 %s: on interface %s: acting on any addr change", | |
329 | __PRETTY_FUNCTION__, ifp->name); | |
12e41d03 DL |
330 | |
331 | if (!changed) { | |
332 | return; | |
333 | } | |
334 | ||
335 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
336 | return; | |
337 | } | |
338 | ||
339 | pim_addr_change(ifp); | |
340 | } | |
341 | ||
342 | static void detect_address_change(struct interface *ifp, | |
343 | int force_prim_as_any, | |
344 | const char *caller) | |
345 | { | |
346 | int prim_changed; | |
347 | ||
348 | prim_changed = detect_primary_address_change(ifp, force_prim_as_any, caller); | |
349 | if (prim_changed) { | |
350 | /* no need to detect secondary change because | |
351 | the reaction would be the same */ | |
352 | return; | |
353 | } | |
354 | ||
355 | detect_secondary_address_change(ifp, caller); | |
356 | } | |
357 | ||
358 | void pim_if_addr_add(struct connected *ifc) | |
359 | { | |
360 | struct pim_interface *pim_ifp; | |
361 | struct interface *ifp; | |
362 | struct in_addr ifaddr; | |
363 | ||
364 | zassert(ifc); | |
365 | ||
366 | ifp = ifc->ifp; | |
367 | zassert(ifp); | |
368 | pim_ifp = ifp->info; | |
369 | if (!pim_ifp) | |
370 | return; | |
371 | ||
372 | if (!if_is_operative(ifp)) | |
373 | return; | |
374 | ||
7adf0260 | 375 | if (PIM_DEBUG_ZEBRA) { |
12e41d03 DL |
376 | char buf[BUFSIZ]; |
377 | prefix2str(ifc->address, buf, BUFSIZ); | |
378 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
379 | __PRETTY_FUNCTION__, | |
380 | ifp->name, ifp->ifindex, buf, | |
381 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) ? | |
382 | "secondary" : "primary"); | |
383 | } | |
384 | ||
385 | ifaddr = ifc->address->u.prefix4; | |
386 | ||
387 | detect_address_change(ifp, 0, __PRETTY_FUNCTION__); | |
388 | ||
389 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { | |
390 | struct igmp_sock *igmp; | |
391 | ||
392 | /* lookup IGMP socket */ | |
393 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
394 | ifaddr); | |
395 | if (!igmp) { | |
396 | /* if addr new, add IGMP socket */ | |
397 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, ifp); | |
398 | } | |
399 | } /* igmp */ | |
400 | ||
401 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
402 | ||
403 | /* Interface has a valid primary address ? */ | |
404 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
405 | ||
406 | /* Interface has a valid socket ? */ | |
407 | if (pim_ifp->pim_sock_fd < 0) { | |
408 | if (pim_sock_add(ifp)) { | |
409 | zlog_warn("Failure creating PIM socket for interface %s", | |
410 | ifp->name); | |
411 | } | |
412 | } | |
413 | ||
414 | } | |
415 | } /* pim */ | |
416 | ||
417 | if (PIM_MROUTE_IS_ENABLED) { | |
418 | /* | |
419 | PIM or IGMP is enabled on interface, and there is at least one | |
420 | address assigned, then try to create a vif_index. | |
421 | */ | |
422 | if (pim_ifp->mroute_vif_index < 0) { | |
423 | pim_if_add_vif(ifp); | |
424 | } | |
c8507a16 | 425 | pim_ifchannel_scan_forward_start (ifp); |
12e41d03 DL |
426 | } |
427 | } | |
428 | ||
429 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
430 | { | |
431 | struct pim_interface *pim_ifp = ifc->ifp->info; | |
432 | struct igmp_sock *igmp; | |
433 | struct in_addr ifaddr; | |
434 | ||
435 | if (ifc->address->family != AF_INET) { | |
436 | /* non-IPv4 address */ | |
437 | return; | |
438 | } | |
439 | ||
440 | if (!pim_ifp) { | |
441 | /* IGMP not enabled on interface */ | |
442 | return; | |
443 | } | |
444 | ||
445 | ifaddr = ifc->address->u.prefix4; | |
446 | ||
447 | /* lookup IGMP socket */ | |
448 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
449 | ifaddr); | |
450 | if (igmp) { | |
451 | /* if addr found, del IGMP socket */ | |
452 | igmp_sock_delete(igmp); | |
453 | } | |
454 | } | |
455 | ||
456 | static void pim_if_addr_del_pim(struct connected *ifc) | |
457 | { | |
458 | struct pim_interface *pim_ifp = ifc->ifp->info; | |
459 | ||
460 | if (ifc->address->family != AF_INET) { | |
461 | /* non-IPv4 address */ | |
462 | return; | |
463 | } | |
464 | ||
465 | if (!pim_ifp) { | |
466 | /* PIM not enabled on interface */ | |
467 | return; | |
468 | } | |
469 | ||
470 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
471 | /* Interface keeps a valid primary address */ | |
472 | return; | |
473 | } | |
474 | ||
475 | if (pim_ifp->pim_sock_fd < 0) { | |
476 | /* Interface does not hold a valid socket any longer */ | |
477 | return; | |
478 | } | |
479 | ||
480 | /* | |
481 | pim_sock_delete() closes the socket, stops read and timer threads, | |
482 | and kills all neighbors. | |
483 | */ | |
484 | pim_sock_delete(ifc->ifp, "last address has been removed from interface"); | |
485 | } | |
486 | ||
487 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) | |
488 | { | |
489 | struct interface *ifp; | |
490 | ||
491 | zassert(ifc); | |
492 | ifp = ifc->ifp; | |
493 | zassert(ifp); | |
494 | ||
7adf0260 | 495 | if (PIM_DEBUG_ZEBRA) { |
12e41d03 DL |
496 | char buf[BUFSIZ]; |
497 | prefix2str(ifc->address, buf, BUFSIZ); | |
498 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
499 | __PRETTY_FUNCTION__, | |
500 | ifp->name, ifp->ifindex, buf, | |
501 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) ? | |
502 | "secondary" : "primary"); | |
503 | } | |
504 | ||
505 | detect_address_change(ifp, force_prim_as_any, __PRETTY_FUNCTION__); | |
506 | ||
507 | pim_if_addr_del_igmp(ifc); | |
508 | pim_if_addr_del_pim(ifc); | |
509 | } | |
510 | ||
511 | void pim_if_addr_add_all(struct interface *ifp) | |
512 | { | |
513 | struct connected *ifc; | |
514 | struct listnode *node; | |
515 | struct listnode *nextnode; | |
d8424057 DS |
516 | int v4_addrs = 0; |
517 | int v6_addrs = 0; | |
12e41d03 DL |
518 | |
519 | /* PIM/IGMP enabled ? */ | |
520 | if (!ifp->info) | |
521 | return; | |
522 | ||
523 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
524 | struct prefix *p = ifc->address; | |
525 | ||
526 | if (p->family != AF_INET) | |
d8424057 DS |
527 | { |
528 | v6_addrs++; | |
529 | continue; | |
530 | } | |
12e41d03 | 531 | |
d8424057 | 532 | v4_addrs++; |
12e41d03 DL |
533 | pim_if_addr_add(ifc); |
534 | } | |
d8424057 DS |
535 | |
536 | if (!v4_addrs && v6_addrs && !if_is_loopback (ifp)) | |
537 | { | |
538 | struct pim_interface *pim_ifp = ifp->info; | |
539 | ||
540 | if (pim_ifp && PIM_IF_TEST_PIM(pim_ifp->options)) { | |
541 | ||
542 | /* Interface has a valid primary address ? */ | |
543 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
544 | ||
545 | /* Interface has a valid socket ? */ | |
546 | if (pim_ifp->pim_sock_fd < 0) { | |
547 | if (pim_sock_add(ifp)) { | |
548 | zlog_warn("Failure creating PIM socket for interface %s", | |
549 | ifp->name); | |
550 | } | |
551 | } | |
552 | ||
553 | } | |
554 | } /* pim */ | |
555 | } | |
12e41d03 DL |
556 | } |
557 | ||
558 | void pim_if_addr_del_all(struct interface *ifp) | |
559 | { | |
560 | struct connected *ifc; | |
561 | struct listnode *node; | |
562 | struct listnode *nextnode; | |
563 | ||
564 | /* PIM/IGMP enabled ? */ | |
565 | if (!ifp->info) | |
566 | return; | |
567 | ||
568 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
569 | struct prefix *p = ifc->address; | |
570 | ||
571 | if (p->family != AF_INET) | |
572 | continue; | |
573 | ||
574 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); | |
575 | } | |
576 | } | |
577 | ||
578 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
579 | { | |
580 | struct connected *ifc; | |
581 | struct listnode *node; | |
582 | struct listnode *nextnode; | |
583 | ||
584 | /* PIM/IGMP enabled ? */ | |
585 | if (!ifp->info) | |
586 | return; | |
587 | ||
588 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
589 | struct prefix *p = ifc->address; | |
590 | ||
591 | if (p->family != AF_INET) | |
592 | continue; | |
593 | ||
594 | pim_if_addr_del_igmp(ifc); | |
595 | } | |
596 | } | |
597 | ||
598 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
599 | { | |
600 | struct connected *ifc; | |
601 | struct listnode *node; | |
602 | struct listnode *nextnode; | |
603 | ||
604 | /* PIM/IGMP enabled ? */ | |
605 | if (!ifp->info) | |
606 | return; | |
607 | ||
608 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
609 | struct prefix *p = ifc->address; | |
610 | ||
611 | if (p->family != AF_INET) | |
612 | continue; | |
613 | ||
614 | pim_if_addr_del_pim(ifc); | |
615 | } | |
616 | } | |
617 | ||
89f1d91e DS |
618 | struct in_addr |
619 | pim_find_primary_addr (struct interface *ifp) | |
12e41d03 DL |
620 | { |
621 | struct connected *ifc; | |
622 | struct listnode *node; | |
623 | struct in_addr addr; | |
d8424057 DS |
624 | int v4_addrs = 0; |
625 | int v6_addrs = 0; | |
12e41d03 DL |
626 | |
627 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
628 | struct prefix *p = ifc->address; | |
d8424057 | 629 | |
12e41d03 | 630 | if (p->family != AF_INET) |
d8424057 DS |
631 | { |
632 | v6_addrs++; | |
633 | continue; | |
634 | } | |
12e41d03 DL |
635 | |
636 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
637 | zlog_warn("%s: null IPv4 address connected to interface %s", | |
638 | __PRETTY_FUNCTION__, ifp->name); | |
639 | continue; | |
640 | } | |
641 | ||
d8424057 DS |
642 | v4_addrs++; |
643 | ||
12e41d03 DL |
644 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) |
645 | continue; | |
646 | ||
647 | return p->u.prefix4; | |
648 | } | |
649 | ||
d8424057 DS |
650 | /* |
651 | * If we have no v4_addrs and v6 is configured | |
652 | * We probably are using unnumbered | |
653 | * So let's grab the loopbacks v4 address | |
654 | * and use that as the primary address | |
655 | */ | |
656 | if (!v4_addrs && v6_addrs && !if_is_loopback (ifp)) | |
657 | { | |
658 | struct interface *lo_ifp; | |
659 | lo_ifp = if_lookup_by_name_vrf ("lo", VRF_DEFAULT); | |
660 | if (lo_ifp) | |
661 | return pim_find_primary_addr (lo_ifp); | |
662 | } | |
663 | ||
12e41d03 DL |
664 | addr.s_addr = PIM_NET_INADDR_ANY; |
665 | ||
666 | return addr; | |
667 | } | |
668 | ||
9df99407 | 669 | static int pim_iface_vif_index = 0; |
744d91b3 | 670 | |
9df99407 | 671 | static int |
744d91b3 DS |
672 | pim_iface_next_vif_index (struct interface *ifp) |
673 | { | |
674 | /* | |
675 | * The pimreg vif is always going to be in index 0 | |
676 | * of the table. | |
677 | */ | |
678 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
679 | return 0; | |
680 | ||
681 | pim_iface_vif_index++; | |
682 | return pim_iface_vif_index; | |
683 | } | |
684 | ||
12e41d03 DL |
685 | /* |
686 | pim_if_add_vif() uses ifindex as vif_index | |
687 | ||
688 | see also pim_if_find_vifindex_by_ifindex() | |
689 | */ | |
690 | int pim_if_add_vif(struct interface *ifp) | |
691 | { | |
692 | struct pim_interface *pim_ifp = ifp->info; | |
693 | struct in_addr ifaddr; | |
b3f2bf7c | 694 | unsigned char flags = 0; |
12e41d03 DL |
695 | |
696 | zassert(pim_ifp); | |
697 | ||
698 | if (pim_ifp->mroute_vif_index > 0) { | |
699 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
700 | __PRETTY_FUNCTION__, | |
701 | pim_ifp->mroute_vif_index, ifp->name, ifp->ifindex); | |
702 | return -1; | |
703 | } | |
704 | ||
705 | if (ifp->ifindex < 1) { | |
706 | zlog_warn("%s: ifindex=%d < 1 on interface %s", | |
707 | __PRETTY_FUNCTION__, | |
708 | ifp->ifindex, ifp->name); | |
709 | return -2; | |
710 | } | |
711 | ||
12e41d03 | 712 | ifaddr = pim_ifp->primary_address; |
c992c9a0 | 713 | if (ifp->ifindex != PIM_OIF_PIM_REGISTER_VIF && PIM_INADDR_IS_ANY(ifaddr)) { |
12e41d03 DL |
714 | zlog_warn("%s: could not get address for interface %s ifindex=%d", |
715 | __PRETTY_FUNCTION__, | |
716 | ifp->name, ifp->ifindex); | |
717 | return -4; | |
718 | } | |
719 | ||
744d91b3 DS |
720 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index (ifp); |
721 | ||
722 | if (pim_ifp->mroute_vif_index >= MAXVIFS) | |
723 | { | |
724 | zlog_warn("%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
725 | __PRETTY_FUNCTION__, | |
726 | MAXVIFS, ifp->name); | |
727 | return -3; | |
728 | } | |
729 | ||
b3f2bf7c RW |
730 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) |
731 | flags = VIFF_REGISTER; | |
732 | #ifdef VIFF_USE_IFINDEX | |
733 | else | |
734 | flags = VIFF_USE_IFINDEX; | |
735 | #endif | |
736 | ||
744d91b3 | 737 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
12e41d03 DL |
738 | /* pim_mroute_add_vif reported error */ |
739 | return -5; | |
740 | } | |
741 | ||
12e41d03 DL |
742 | /* |
743 | Update highest vif_index | |
744 | */ | |
c992c9a0 DS |
745 | if (pim_ifp->mroute_vif_index != PIM_OIF_PIM_REGISTER_VIF && |
746 | pim_ifp->mroute_vif_index > qpim_mroute_oif_highest_vif_index) { | |
12e41d03 DL |
747 | qpim_mroute_oif_highest_vif_index = pim_ifp->mroute_vif_index; |
748 | } | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
753 | static int iflist_find_highest_vif_index() | |
754 | { | |
755 | struct listnode *ifnode; | |
756 | struct interface *ifp; | |
757 | struct pim_interface *pim_ifp; | |
758 | int highest_vif_index = -1; | |
759 | ||
469351b3 | 760 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), ifnode, ifp)) { |
12e41d03 DL |
761 | pim_ifp = ifp->info; |
762 | if (!pim_ifp) | |
763 | continue; | |
764 | ||
765 | if (pim_ifp->mroute_vif_index > highest_vif_index) { | |
766 | highest_vif_index = pim_ifp->mroute_vif_index; | |
767 | } | |
768 | } | |
769 | ||
770 | return highest_vif_index; | |
771 | } | |
772 | ||
773 | int pim_if_del_vif(struct interface *ifp) | |
774 | { | |
775 | struct pim_interface *pim_ifp = ifp->info; | |
776 | int old_vif_index; | |
777 | ||
778 | if (pim_ifp->mroute_vif_index < 1) { | |
779 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
780 | __PRETTY_FUNCTION__, | |
781 | pim_ifp->mroute_vif_index, ifp->name, ifp->ifindex); | |
782 | return -1; | |
783 | } | |
784 | ||
785 | if (pim_mroute_del_vif(pim_ifp->mroute_vif_index)) { | |
786 | /* pim_mroute_del_vif reported error */ | |
787 | return -2; | |
788 | } | |
789 | ||
790 | /* | |
791 | Update highest vif_index | |
792 | */ | |
793 | ||
794 | /* save old vif_index in order to compare with highest below */ | |
795 | old_vif_index = pim_ifp->mroute_vif_index; | |
796 | ||
797 | pim_ifp->mroute_vif_index = -1; | |
798 | ||
799 | if (old_vif_index == qpim_mroute_oif_highest_vif_index) { | |
800 | qpim_mroute_oif_highest_vif_index = iflist_find_highest_vif_index(); | |
801 | } | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
806 | void pim_if_add_vif_all() | |
807 | { | |
808 | struct listnode *ifnode; | |
809 | struct listnode *ifnextnode; | |
810 | struct interface *ifp; | |
811 | ||
469351b3 | 812 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), ifnode, ifnextnode, ifp)) { |
12e41d03 DL |
813 | if (!ifp->info) |
814 | continue; | |
815 | ||
816 | pim_if_add_vif(ifp); | |
817 | } | |
818 | } | |
819 | ||
820 | void pim_if_del_vif_all() | |
821 | { | |
822 | struct listnode *ifnode; | |
823 | struct listnode *ifnextnode; | |
824 | struct interface *ifp; | |
825 | ||
469351b3 | 826 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), ifnode, ifnextnode, ifp)) { |
12e41d03 DL |
827 | if (!ifp->info) |
828 | continue; | |
829 | ||
830 | pim_if_del_vif(ifp); | |
831 | } | |
832 | } | |
833 | ||
b892f1dd | 834 | struct interface *pim_if_find_by_vif_index(ifindex_t vif_index) |
12e41d03 DL |
835 | { |
836 | struct listnode *ifnode; | |
837 | struct interface *ifp; | |
838 | ||
ae90dfbb DS |
839 | if (vif_index == 0) |
840 | return if_lookup_by_name_vrf ("pimreg", VRF_DEFAULT); | |
841 | ||
469351b3 | 842 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), ifnode, ifp)) { |
12e41d03 DL |
843 | if (ifp->info) { |
844 | struct pim_interface *pim_ifp; | |
845 | pim_ifp = ifp->info; | |
b892f1dd | 846 | |
12e41d03 DL |
847 | if (vif_index == pim_ifp->mroute_vif_index) |
848 | return ifp; | |
849 | } | |
850 | } | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | /* | |
856 | pim_if_add_vif() uses ifindex as vif_index | |
857 | */ | |
b892f1dd | 858 | int pim_if_find_vifindex_by_ifindex(ifindex_t ifindex) |
12e41d03 | 859 | { |
ae90dfbb DS |
860 | struct pim_interface *pim_ifp; |
861 | struct interface *ifp; | |
862 | ||
863 | ifp = if_lookup_by_index_vrf (ifindex, VRF_DEFAULT); | |
864 | pim_ifp = ifp->info; | |
865 | if (!pim_ifp) | |
866 | return -1; | |
867 | ||
868 | return pim_ifp->mroute_vif_index; | |
12e41d03 DL |
869 | } |
870 | ||
871 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
872 | { | |
873 | struct pim_interface *pim_ifp; | |
874 | ||
875 | pim_ifp = ifp->info; | |
876 | zassert(pim_ifp); | |
877 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
878 | ||
879 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; | |
880 | } | |
881 | ||
882 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
883 | { | |
884 | if (pim_if_lan_delay_enabled(ifp)) { | |
885 | struct pim_interface *pim_ifp; | |
886 | pim_ifp = ifp->info; | |
887 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
888 | } | |
889 | else { | |
890 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
891 | } | |
892 | } | |
893 | ||
894 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
895 | { | |
896 | if (pim_if_lan_delay_enabled(ifp)) { | |
897 | struct pim_interface *pim_ifp; | |
898 | pim_ifp = ifp->info; | |
899 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
900 | } | |
901 | else { | |
902 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
903 | } | |
904 | } | |
905 | ||
906 | int pim_if_t_override_msec(struct interface *ifp) | |
907 | { | |
908 | int effective_override_interval_msec; | |
909 | int t_override_msec; | |
910 | ||
911 | effective_override_interval_msec = | |
912 | pim_if_effective_override_interval_msec(ifp); | |
913 | ||
60b40924 | 914 | t_override_msec = random() % (effective_override_interval_msec + 1); |
12e41d03 DL |
915 | |
916 | return t_override_msec; | |
917 | } | |
918 | ||
919 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
920 | { | |
921 | return pim_if_effective_propagation_delay_msec(ifp) + | |
922 | pim_if_effective_override_interval_msec(ifp); | |
923 | } | |
924 | ||
925 | /* | |
926 | RFC 4601: 4.1.6. State Summarization Macros | |
927 | ||
928 | The function NBR( I, A ) uses information gathered through PIM Hello | |
929 | messages to map the IP address A of a directly connected PIM | |
930 | neighbor router on interface I to the primary IP address of the same | |
931 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
932 | address that it uses as the source of its PIM Hello messages. | |
933 | */ | |
934 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
935 | struct in_addr addr) | |
936 | { | |
937 | struct listnode *neighnode; | |
938 | struct pim_neighbor *neigh; | |
939 | struct pim_interface *pim_ifp; | |
940 | ||
941 | zassert(ifp); | |
942 | ||
943 | pim_ifp = ifp->info; | |
944 | if (!pim_ifp) { | |
945 | zlog_warn("%s: multicast not enabled on interface %s", | |
946 | __PRETTY_FUNCTION__, | |
947 | ifp->name); | |
948 | return 0; | |
949 | } | |
950 | ||
951 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, neigh)) { | |
952 | ||
953 | /* primary address ? */ | |
954 | if (neigh->source_addr.s_addr == addr.s_addr) | |
955 | return neigh; | |
956 | ||
957 | /* secondary address ? */ | |
958 | if (pim_neighbor_find_secondary(neigh, addr)) | |
959 | return neigh; | |
960 | } | |
961 | ||
962 | if (PIM_DEBUG_PIM_TRACE) { | |
eaa54bdb | 963 | char addr_str[INET_ADDRSTRLEN]; |
12e41d03 DL |
964 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); |
965 | zlog_debug("%s: neighbor not found for address %s on interface %s", | |
966 | __PRETTY_FUNCTION__, | |
967 | addr_str, ifp->name); | |
968 | } | |
969 | ||
ff67a923 | 970 | return NULL; |
12e41d03 DL |
971 | } |
972 | ||
973 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
974 | { | |
975 | struct pim_interface *pim_ifp; | |
976 | long t_suppressed_msec; | |
60b40924 | 977 | uint32_t ramount = 0; |
12e41d03 DL |
978 | |
979 | pim_ifp = ifp->info; | |
980 | zassert(pim_ifp); | |
981 | ||
982 | /* join suppression disabled ? */ | |
983 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
984 | return 0; | |
985 | ||
986 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ | |
60b40924 DS |
987 | ramount = 1100 + (random() % (1400 - 1100 + 1)); |
988 | t_suppressed_msec = qpim_t_periodic * ramount; | |
12e41d03 DL |
989 | |
990 | return t_suppressed_msec; | |
991 | } | |
992 | ||
993 | static void igmp_join_free(struct igmp_join *ij) | |
994 | { | |
995 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); | |
996 | } | |
997 | ||
998 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
999 | struct in_addr group_addr, | |
1000 | struct in_addr source_addr) | |
1001 | { | |
1002 | struct listnode *node; | |
1003 | struct igmp_join *ij; | |
1004 | ||
1005 | zassert(join_list); | |
1006 | ||
1007 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { | |
1008 | if ((group_addr.s_addr == ij->group_addr.s_addr) && | |
1009 | (source_addr.s_addr == ij->source_addr.s_addr)) | |
1010 | return ij; | |
1011 | } | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | static int igmp_join_sock(const char *ifname, | |
b892f1dd | 1017 | ifindex_t ifindex, |
12e41d03 DL |
1018 | struct in_addr group_addr, |
1019 | struct in_addr source_addr) | |
1020 | { | |
1021 | int join_fd; | |
1022 | ||
1023 | join_fd = pim_socket_raw(IPPROTO_IGMP); | |
1024 | if (join_fd < 0) { | |
1025 | return -1; | |
1026 | } | |
1027 | ||
1028 | if (pim_socket_join_source(join_fd, ifindex, group_addr, source_addr, ifname)) { | |
1029 | close(join_fd); | |
1030 | return -2; | |
1031 | } | |
1032 | ||
1033 | return join_fd; | |
1034 | } | |
1035 | ||
1036 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1037 | struct in_addr group_addr, | |
1038 | struct in_addr source_addr) | |
1039 | { | |
1040 | struct pim_interface *pim_ifp; | |
1041 | struct igmp_join *ij; | |
1042 | int join_fd; | |
1043 | ||
1044 | pim_ifp = ifp->info; | |
1045 | zassert(pim_ifp); | |
1046 | ||
1047 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, source_addr); | |
1048 | if (join_fd < 0) { | |
eaa54bdb DW |
1049 | char group_str[INET_ADDRSTRLEN]; |
1050 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1051 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1052 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1053 | zlog_warn("%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
1054 | __PRETTY_FUNCTION__, | |
1055 | group_str, source_str, ifp->name); | |
1056 | return 0; | |
1057 | } | |
1058 | ||
36d9e7dc | 1059 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); |
12e41d03 | 1060 | if (!ij) { |
eaa54bdb DW |
1061 | char group_str[INET_ADDRSTRLEN]; |
1062 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1063 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1064 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
36d9e7dc | 1065 | zlog_err("%s: XCALLOC(%zu) failure for IGMP group %s source %s on interface %s", |
12e41d03 DL |
1066 | __PRETTY_FUNCTION__, |
1067 | sizeof(*ij), group_str, source_str, ifp->name); | |
1068 | close(join_fd); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | ij->sock_fd = join_fd; | |
1073 | ij->group_addr = group_addr; | |
1074 | ij->source_addr = source_addr; | |
1075 | ij->sock_creation = pim_time_monotonic_sec(); | |
1076 | ||
1077 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1078 | ||
1079 | return ij; | |
1080 | } | |
1081 | ||
1082 | int pim_if_igmp_join_add(struct interface *ifp, | |
1083 | struct in_addr group_addr, | |
1084 | struct in_addr source_addr) | |
1085 | { | |
1086 | struct pim_interface *pim_ifp; | |
1087 | struct igmp_join *ij; | |
1088 | ||
1089 | pim_ifp = ifp->info; | |
1090 | if (!pim_ifp) { | |
1091 | zlog_warn("%s: multicast not enabled on interface %s", | |
1092 | __PRETTY_FUNCTION__, | |
1093 | ifp->name); | |
1094 | return -1; | |
1095 | } | |
1096 | ||
1097 | if (!pim_ifp->igmp_join_list) { | |
1098 | pim_ifp->igmp_join_list = list_new(); | |
1099 | if (!pim_ifp->igmp_join_list) { | |
1100 | zlog_err("%s %s: failure: igmp_join_list=list_new()", | |
1101 | __FILE__, __PRETTY_FUNCTION__); | |
1102 | return -2; | |
1103 | } | |
1104 | pim_ifp->igmp_join_list->del = (void (*)(void *)) igmp_join_free; | |
1105 | } | |
1106 | ||
1107 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1108 | if (ij) { | |
eaa54bdb DW |
1109 | char group_str[INET_ADDRSTRLEN]; |
1110 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1111 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1112 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1113 | zlog_warn("%s: can't re-join existing IGMP group %s source %s on interface %s", | |
1114 | __PRETTY_FUNCTION__, | |
1115 | group_str, source_str, ifp->name); | |
1116 | return -3; | |
1117 | } | |
1118 | ||
1119 | ij = igmp_join_new(ifp, group_addr, source_addr); | |
1120 | if (!ij) { | |
eaa54bdb DW |
1121 | char group_str[INET_ADDRSTRLEN]; |
1122 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1123 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1124 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1125 | zlog_warn("%s: igmp_join_new() failure for IGMP group %s source %s on interface %s", | |
1126 | __PRETTY_FUNCTION__, | |
1127 | group_str, source_str, ifp->name); | |
1128 | return -4; | |
1129 | } | |
1130 | ||
7adf0260 | 1131 | if (PIM_DEBUG_IGMP_EVENTS) { |
eaa54bdb DW |
1132 | char group_str[INET_ADDRSTRLEN]; |
1133 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1134 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1135 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1136 | zlog_debug("%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
7adf0260 DS |
1137 | __PRETTY_FUNCTION__, |
1138 | source_str, group_str, ifp->name); | |
12e41d03 DL |
1139 | } |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | ||
1145 | ||
1146 | int pim_if_igmp_join_del(struct interface *ifp, | |
1147 | struct in_addr group_addr, | |
1148 | struct in_addr source_addr) | |
1149 | { | |
1150 | struct pim_interface *pim_ifp; | |
1151 | struct igmp_join *ij; | |
1152 | ||
1153 | pim_ifp = ifp->info; | |
1154 | if (!pim_ifp) { | |
1155 | zlog_warn("%s: multicast not enabled on interface %s", | |
1156 | __PRETTY_FUNCTION__, | |
1157 | ifp->name); | |
1158 | return -1; | |
1159 | } | |
1160 | ||
1161 | if (!pim_ifp->igmp_join_list) { | |
1162 | zlog_warn("%s: no IGMP join on interface %s", | |
1163 | __PRETTY_FUNCTION__, | |
1164 | ifp->name); | |
1165 | return -2; | |
1166 | } | |
1167 | ||
1168 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1169 | if (!ij) { | |
eaa54bdb DW |
1170 | char group_str[INET_ADDRSTRLEN]; |
1171 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1172 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1173 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1174 | zlog_warn("%s: could not find IGMP group %s source %s on interface %s", | |
1175 | __PRETTY_FUNCTION__, | |
1176 | group_str, source_str, ifp->name); | |
1177 | return -3; | |
1178 | } | |
1179 | ||
1180 | if (close(ij->sock_fd)) { | |
eaa54bdb DW |
1181 | char group_str[INET_ADDRSTRLEN]; |
1182 | char source_str[INET_ADDRSTRLEN]; | |
12e41d03 DL |
1183 | pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str)); |
1184 | pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str)); | |
1185 | zlog_warn("%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
1186 | __PRETTY_FUNCTION__, | |
3d7765d7 | 1187 | ij->sock_fd, group_str, source_str, ifp->name, errno, safe_strerror(errno)); |
12e41d03 DL |
1188 | /* warning only */ |
1189 | } | |
1190 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1191 | igmp_join_free(ij); | |
1192 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
1193 | list_delete(pim_ifp->igmp_join_list); | |
1194 | pim_ifp->igmp_join_list = 0; | |
1195 | } | |
1196 | ||
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1201 | { | |
1202 | struct pim_interface *pim_ifp; | |
1203 | struct listnode *node; | |
1204 | struct listnode *nextnode; | |
1205 | struct igmp_join *ij; | |
1206 | ||
1207 | pim_ifp = ifp->info; | |
1208 | if (!pim_ifp) { | |
1209 | zlog_warn("%s: multicast not enabled on interface %s", | |
1210 | __PRETTY_FUNCTION__, | |
1211 | ifp->name); | |
1212 | return; | |
1213 | } | |
1214 | ||
1215 | if (!pim_ifp->igmp_join_list) | |
1216 | return; | |
1217 | ||
1218 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1219 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
1220 | } | |
1221 | ||
1222 | /* | |
1223 | RFC 4601 | |
1224 | ||
1225 | Transitions from "I am Assert Loser" State | |
1226 | ||
1227 | Current Winner's GenID Changes or NLT Expires | |
1228 | ||
1229 | The Neighbor Liveness Timer associated with the current winner | |
1230 | expires or we receive a Hello message from the current winner | |
1231 | reporting a different GenID from the one it previously reported. | |
1232 | This indicates that the current winner's interface or router has | |
1233 | gone down (and may have come back up), and so we must assume it no | |
1234 | longer knows it was the winner. | |
1235 | */ | |
1236 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1237 | struct in_addr neigh_addr) | |
1238 | { | |
1239 | struct pim_interface *pim_ifp; | |
1240 | struct listnode *node; | |
1241 | struct listnode *next_node; | |
1242 | struct pim_ifchannel *ch; | |
1243 | ||
1244 | pim_ifp = ifp->info; | |
1245 | zassert(pim_ifp); | |
1246 | ||
1247 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
1248 | /* Is (S,G,I) assert loser ? */ | |
1249 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1250 | continue; | |
1251 | /* Dead neighbor was winner ? */ | |
1252 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1253 | continue; | |
1254 | ||
1255 | assert_action_a5(ch); | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1260 | { | |
1261 | struct listnode *ch_node; | |
1262 | struct pim_ifchannel *ch; | |
1263 | ||
1264 | /* clear off flag from interface's upstreams */ | |
1265 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1266 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED(ch->upstream->flags); | |
1267 | } | |
1268 | ||
1269 | /* scan per-interface (S,G,I) state on this I interface */ | |
1270 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
1271 | struct pim_upstream *up = ch->upstream; | |
1272 | ||
1273 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) | |
1274 | continue; | |
1275 | ||
1276 | /* update join_desired for the global (S,G) state */ | |
1277 | pim_upstream_update_join_desired(up); | |
1278 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1283 | { | |
1284 | struct pim_interface *pim_ifp; | |
1285 | struct listnode *node; | |
1286 | struct listnode *next_node; | |
1287 | struct pim_ifchannel *ch; | |
1288 | ||
1289 | pim_ifp = ifp->info; | |
1290 | if (!pim_ifp) | |
1291 | return; | |
1292 | ||
1293 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
1294 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1295 | } | |
1296 | } | |
c992c9a0 DS |
1297 | |
1298 | /* | |
1299 | * PIM wants to have an interface pointer for everything it does. | |
1300 | * The pimreg is a special interface that we have that is not | |
1301 | * quite an inteface but a VIF is created for it. | |
1302 | */ | |
1303 | void pim_if_create_pimreg (void) | |
1304 | { | |
1305 | if (!pim_regiface) { | |
1306 | pim_regiface = if_create("pimreg", strlen("pimreg")); | |
1307 | pim_regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; | |
1308 | ||
1309 | pim_if_new(pim_regiface, 0, 0); | |
1310 | } | |
1311 | } | |
3565202d DS |
1312 | |
1313 | int | |
1314 | pim_if_connected_to_source (struct interface *ifp, struct in_addr src) | |
1315 | { | |
1316 | struct listnode *cnode; | |
1317 | struct connected *c; | |
1318 | struct prefix p; | |
1319 | ||
1320 | p.family = AF_INET; | |
1321 | p.u.prefix4 = src; | |
1322 | p.prefixlen = IPV4_MAX_BITLEN; | |
1323 | ||
1324 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, c)) | |
1325 | { | |
1326 | if ((c->address->family == AF_INET) && | |
1327 | prefix_match (CONNECTED_PREFIX (c), &p)) | |
1328 | { | |
1329 | return 1; | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | return 0; | |
1334 | } |