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Commit | Line | Data |
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12e41d03 | 1 | /* |
896014f4 DL |
2 | * PIM for Quagga |
3 | * Copyright (C) 2008 Everton da Silva Marques | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; see the file COPYING; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
12e41d03 DL |
18 | |
19 | #include <zebra.h> | |
20 | ||
21 | #include "if.h" | |
22 | #include "log.h" | |
23 | #include "vty.h" | |
24 | #include "memory.h" | |
25 | #include "prefix.h" | |
469351b3 | 26 | #include "vrf.h" |
9f0edbc9 | 27 | #include "linklist.h" |
7176984f | 28 | #include "plist.h" |
a625e937 | 29 | #include "hash.h" |
37664928 | 30 | #include "ferr.h" |
5920b3eb | 31 | #include "network.h" |
12e41d03 DL |
32 | |
33 | #include "pimd.h" | |
c2cf4b02 | 34 | #include "pim_instance.h" |
cba44481 | 35 | #include "pim_zebra.h" |
12e41d03 DL |
36 | #include "pim_iface.h" |
37 | #include "pim_igmp.h" | |
38 | #include "pim_mroute.h" | |
39 | #include "pim_oil.h" | |
40 | #include "pim_str.h" | |
41 | #include "pim_pim.h" | |
42 | #include "pim_neighbor.h" | |
43 | #include "pim_ifchannel.h" | |
12e41d03 DL |
44 | #include "pim_sock.h" |
45 | #include "pim_time.h" | |
46 | #include "pim_ssmpingd.h" | |
7176984f | 47 | #include "pim_rp.h" |
cba44481 | 48 | #include "pim_nht.h" |
69ccd63e | 49 | #include "pim_jp_agg.h" |
c936e76f | 50 | #include "pim_igmp_join.h" |
269c1fe1 | 51 | #include "pim_vxlan.h" |
12e41d03 DL |
52 | |
53 | static void pim_if_igmp_join_del_all(struct interface *ifp); | |
dba88ccb | 54 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
d62a17ae | 55 | struct in_addr group_addr, |
56 | struct in_addr source_addr); | |
12e41d03 | 57 | |
f88df3a6 | 58 | void pim_if_init(struct pim_instance *pim) |
ea4a71fc | 59 | { |
d62a17ae | 60 | int i; |
dc0665f1 | 61 | |
d62a17ae | 62 | for (i = 0; i < MAXVIFS; i++) |
f88df3a6 | 63 | pim->iface_vif_index[i] = 0; |
ea4a71fc DS |
64 | } |
65 | ||
f88df3a6 | 66 | void pim_if_terminate(struct pim_instance *pim) |
ea4a71fc | 67 | { |
39949580 DS |
68 | struct interface *ifp; |
69 | ||
70 | FOR_ALL_INTERFACES (pim->vrf, ifp) { | |
71 | struct pim_interface *pim_ifp = ifp->info; | |
72 | ||
73 | if (!pim_ifp) | |
74 | continue; | |
75 | ||
76 | pim_if_delete(ifp); | |
77 | } | |
1a8a3da8 | 78 | return; |
ea4a71fc DS |
79 | } |
80 | ||
f09eaf1c DS |
81 | static void pim_sec_addr_free(struct pim_secondary_addr *sec_addr) |
82 | { | |
83 | XFREE(MTYPE_PIM_SEC_ADDR, sec_addr); | |
84 | } | |
85 | ||
86 | static int pim_sec_addr_comp(const void *p1, const void *p2) | |
87 | { | |
88 | const struct pim_secondary_addr *sec1 = p1; | |
89 | const struct pim_secondary_addr *sec2 = p2; | |
90 | ||
91 | if (sec1->addr.family == AF_INET && sec2->addr.family == AF_INET6) | |
92 | return -1; | |
93 | ||
94 | if (sec1->addr.family == AF_INET6 && sec2->addr.family == AF_INET) | |
95 | return 1; | |
96 | ||
97 | if (sec1->addr.family == AF_INET) { | |
98 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
99 | < ntohl(sec2->addr.u.prefix4.s_addr)) | |
100 | return -1; | |
101 | ||
102 | if (ntohl(sec1->addr.u.prefix4.s_addr) | |
103 | > ntohl(sec2->addr.u.prefix4.s_addr)) | |
104 | return 1; | |
105 | } else { | |
106 | return memcmp(&sec1->addr.u.prefix6, &sec2->addr.u.prefix6, | |
107 | sizeof(struct in6_addr)); | |
108 | } | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
85a13586 | 113 | struct pim_interface *pim_if_new(struct interface *ifp, bool igmp, bool pim, |
b1891fa0 | 114 | bool ispimreg, bool is_vxlan_term) |
12e41d03 | 115 | { |
d62a17ae | 116 | struct pim_interface *pim_ifp; |
117 | ||
118 | zassert(ifp); | |
119 | zassert(!ifp->info); | |
120 | ||
121 | pim_ifp = XCALLOC(MTYPE_PIM_INTERFACE, sizeof(*pim_ifp)); | |
d62a17ae | 122 | |
123 | pim_ifp->options = 0; | |
18d8291f | 124 | pim_ifp->pim = pim_get_pim_instance(ifp->vrf_id); |
d62a17ae | 125 | pim_ifp->mroute_vif_index = -1; |
126 | ||
127 | pim_ifp->igmp_version = IGMP_DEFAULT_VERSION; | |
128 | pim_ifp->igmp_default_robustness_variable = | |
129 | IGMP_DEFAULT_ROBUSTNESS_VARIABLE; | |
130 | pim_ifp->igmp_default_query_interval = IGMP_GENERAL_QUERY_INTERVAL; | |
131 | pim_ifp->igmp_query_max_response_time_dsec = | |
132 | IGMP_QUERY_MAX_RESPONSE_TIME_DSEC; | |
133 | pim_ifp->igmp_specific_query_max_response_time_dsec = | |
134 | IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC; | |
59115451 SP |
135 | pim_ifp->igmp_last_member_query_count = |
136 | IGMP_DEFAULT_ROBUSTNESS_VARIABLE; | |
d62a17ae | 137 | |
2951a7a4 | 138 | /* BSM config on interface: true by default */ |
19de48b9 | 139 | pim_ifp->bsm_enable = true; |
140 | pim_ifp->ucast_bsm_accept = true; | |
141 | ||
d62a17ae | 142 | /* |
143 | RFC 3376: 8.3. Query Response Interval | |
144 | The number of seconds represented by the [Query Response Interval] | |
145 | must be less than the [Query Interval]. | |
146 | */ | |
147 | zassert(pim_ifp->igmp_query_max_response_time_dsec | |
148 | < pim_ifp->igmp_default_query_interval); | |
149 | ||
150 | if (pim) | |
151 | PIM_IF_DO_PIM(pim_ifp->options); | |
152 | if (igmp) | |
153 | PIM_IF_DO_IGMP(pim_ifp->options); | |
154 | ||
155 | PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(pim_ifp->options); | |
156 | ||
157 | pim_ifp->igmp_join_list = NULL; | |
158 | pim_ifp->igmp_socket_list = NULL; | |
159 | pim_ifp->pim_neighbor_list = NULL; | |
160 | pim_ifp->upstream_switch_list = NULL; | |
d62a17ae | 161 | pim_ifp->pim_generation_id = 0; |
162 | ||
163 | /* list of struct igmp_sock */ | |
164 | pim_ifp->igmp_socket_list = list_new(); | |
d62a17ae | 165 | pim_ifp->igmp_socket_list->del = (void (*)(void *))igmp_sock_free; |
166 | ||
167 | /* list of struct pim_neighbor */ | |
168 | pim_ifp->pim_neighbor_list = list_new(); | |
d62a17ae | 169 | pim_ifp->pim_neighbor_list->del = (void (*)(void *))pim_neighbor_free; |
170 | ||
171 | pim_ifp->upstream_switch_list = list_new(); | |
69ccd63e DS |
172 | pim_ifp->upstream_switch_list->del = |
173 | (void (*)(void *))pim_jp_agg_group_list_free; | |
174 | pim_ifp->upstream_switch_list->cmp = pim_jp_agg_group_list_cmp; | |
d62a17ae | 175 | |
f09eaf1c | 176 | pim_ifp->sec_addr_list = list_new(); |
f09eaf1c DS |
177 | pim_ifp->sec_addr_list->del = (void (*)(void *))pim_sec_addr_free; |
178 | pim_ifp->sec_addr_list->cmp = | |
179 | (int (*)(void *, void *))pim_sec_addr_comp; | |
180 | ||
414d885a DS |
181 | pim_ifp->activeactive = false; |
182 | ||
ad7b74c4 | 183 | RB_INIT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); |
d62a17ae | 184 | |
185 | ifp->info = pim_ifp; | |
186 | ||
187 | pim_sock_reset(ifp); | |
188 | ||
b1891fa0 | 189 | pim_if_add_vif(ifp, ispimreg, is_vxlan_term); |
ccf696e8 | 190 | pim_ifp->pim->mcast_if_count++; |
d62a17ae | 191 | |
192 | return pim_ifp; | |
12e41d03 DL |
193 | } |
194 | ||
195 | void pim_if_delete(struct interface *ifp) | |
196 | { | |
d62a17ae | 197 | struct pim_interface *pim_ifp; |
ad7b74c4 | 198 | struct pim_ifchannel *ch; |
12e41d03 | 199 | |
d62a17ae | 200 | zassert(ifp); |
201 | pim_ifp = ifp->info; | |
202 | zassert(pim_ifp); | |
12e41d03 | 203 | |
d62a17ae | 204 | if (pim_ifp->igmp_join_list) { |
205 | pim_if_igmp_join_del_all(ifp); | |
206 | } | |
12e41d03 | 207 | |
d62a17ae | 208 | pim_ifchannel_delete_all(ifp); |
209 | igmp_sock_delete_all(ifp); | |
12e41d03 | 210 | |
d62a17ae | 211 | pim_neighbor_delete_all(ifp, "Interface removed from configuration"); |
12e41d03 | 212 | |
d62a17ae | 213 | pim_if_del_vif(ifp); |
ccf696e8 | 214 | pim_ifp->pim->mcast_if_count--; |
12e41d03 | 215 | |
6a154c88 DL |
216 | list_delete(&pim_ifp->igmp_socket_list); |
217 | list_delete(&pim_ifp->pim_neighbor_list); | |
218 | list_delete(&pim_ifp->upstream_switch_list); | |
219 | list_delete(&pim_ifp->sec_addr_list); | |
12e41d03 | 220 | |
0a22ddfb | 221 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp->boundary_oil_plist); |
b0f525a8 | 222 | |
55cd0f61 DS |
223 | while (!RB_EMPTY(pim_ifchannel_rb, &pim_ifp->ifchannel_rb)) { |
224 | ch = RB_ROOT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); | |
225 | ||
ad7b74c4 | 226 | pim_ifchannel_delete(ch); |
55cd0f61 | 227 | } |
a625e937 | 228 | |
d62a17ae | 229 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
12e41d03 | 230 | |
d62a17ae | 231 | ifp->info = NULL; |
12e41d03 DL |
232 | } |
233 | ||
234 | void pim_if_update_could_assert(struct interface *ifp) | |
235 | { | |
d62a17ae | 236 | struct pim_interface *pim_ifp; |
d62a17ae | 237 | struct pim_ifchannel *ch; |
12e41d03 | 238 | |
d62a17ae | 239 | pim_ifp = ifp->info; |
240 | zassert(pim_ifp); | |
12e41d03 | 241 | |
a2addae8 | 242 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 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; |
d62a17ae | 250 | struct pim_ifchannel *ch; |
12e41d03 | 251 | |
d62a17ae | 252 | pim_ifp = ifp->info; |
253 | zassert(pim_ifp); | |
12e41d03 | 254 | |
a2addae8 | 255 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 256 | pim_ifchannel_update_my_assert_metric(ch); |
257 | } | |
12e41d03 DL |
258 | } |
259 | ||
260 | static void pim_addr_change(struct interface *ifp) | |
261 | { | |
d62a17ae | 262 | struct pim_interface *pim_ifp; |
263 | ||
264 | pim_ifp = ifp->info; | |
265 | zassert(pim_ifp); | |
266 | ||
267 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- | |
268 | Done TODO T30 */ | |
269 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
270 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
271 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
272 | pim_if_update_assert_tracking_desired( | |
273 | ifp); /* depends on DR, join_desired */ | |
274 | ||
275 | /* | |
276 | RFC 4601: 4.3.1. Sending Hello Messages | |
277 | ||
278 | 1) Before an interface goes down or changes primary IP address, a | |
279 | Hello message with a zero HoldTime should be sent immediately | |
280 | (with the old IP address if the IP address changed). | |
b279f95c | 281 | -- Done at the caller of the function as new ip already updated here |
d62a17ae | 282 | |
283 | 2) After an interface has changed its IP address, it MUST send a | |
284 | Hello message with its new IP address. | |
285 | -- DONE below | |
286 | ||
287 | 3) If an interface changes one of its secondary IP addresses, a | |
288 | Hello message with an updated Address_List option and a non-zero | |
289 | HoldTime should be sent immediately. | |
290 | -- FIXME See TODO T31 | |
291 | */ | |
292 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
293 | if (pim_ifp->pim_sock_fd < 0) | |
294 | return; | |
295 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
12e41d03 DL |
296 | } |
297 | ||
12e41d03 DL |
298 | static int detect_primary_address_change(struct interface *ifp, |
299 | int force_prim_as_any, | |
300 | const char *caller) | |
301 | { | |
d62a17ae | 302 | struct pim_interface *pim_ifp = ifp->info; |
303 | struct in_addr new_prim_addr; | |
304 | int changed; | |
305 | ||
306 | if (force_prim_as_any) | |
307 | new_prim_addr.s_addr = INADDR_ANY; | |
308 | else | |
309 | new_prim_addr = pim_find_primary_addr(ifp); | |
310 | ||
311 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
312 | ||
313 | if (PIM_DEBUG_ZEBRA) { | |
314 | char new_prim_str[INET_ADDRSTRLEN]; | |
315 | char old_prim_str[INET_ADDRSTRLEN]; | |
316 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, | |
317 | sizeof(new_prim_str)); | |
318 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, | |
319 | sizeof(old_prim_str)); | |
15569c58 DA |
320 | zlog_debug("%s: old=%s new=%s on interface %s: %s", __func__, |
321 | old_prim_str, new_prim_str, ifp->name, | |
322 | changed ? "changed" : "unchanged"); | |
d62a17ae | 323 | } |
324 | ||
325 | if (changed) { | |
b279f95c | 326 | /* Before updating pim_ifp send Hello time with 0 hold time */ |
327 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
328 | pim_hello_send(ifp, 0 /* zero-sec holdtime */); | |
329 | } | |
d62a17ae | 330 | pim_ifp->primary_address = new_prim_addr; |
331 | } | |
332 | ||
333 | return changed; | |
12e41d03 DL |
334 | } |
335 | ||
7176984f | 336 | static struct pim_secondary_addr * |
294b6d72 | 337 | pim_sec_addr_find(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 338 | { |
d62a17ae | 339 | struct pim_secondary_addr *sec_addr; |
340 | struct listnode *node; | |
7176984f | 341 | |
d62a17ae | 342 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
343 | if (prefix_cmp(&sec_addr->addr, addr)) { | |
344 | return sec_addr; | |
345 | } | |
346 | } | |
7176984f | 347 | |
d62a17ae | 348 | return NULL; |
7176984f | 349 | } |
350 | ||
351 | static void pim_sec_addr_del(struct pim_interface *pim_ifp, | |
d62a17ae | 352 | struct pim_secondary_addr *sec_addr) |
7176984f | 353 | { |
d62a17ae | 354 | listnode_delete(pim_ifp->sec_addr_list, sec_addr); |
355 | pim_sec_addr_free(sec_addr); | |
7176984f | 356 | } |
357 | ||
294b6d72 | 358 | static int pim_sec_addr_add(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 359 | { |
d62a17ae | 360 | int changed = 0; |
361 | struct pim_secondary_addr *sec_addr; | |
362 | ||
363 | sec_addr = pim_sec_addr_find(pim_ifp, addr); | |
364 | if (sec_addr) { | |
365 | sec_addr->flags &= ~PIM_SEC_ADDRF_STALE; | |
366 | return changed; | |
367 | } | |
368 | ||
d62a17ae | 369 | sec_addr = XCALLOC(MTYPE_PIM_SEC_ADDR, sizeof(*sec_addr)); |
d62a17ae | 370 | |
371 | changed = 1; | |
372 | sec_addr->addr = *addr; | |
373 | listnode_add_sort(pim_ifp->sec_addr_list, sec_addr); | |
374 | ||
375 | return changed; | |
7176984f | 376 | } |
377 | ||
378 | static int pim_sec_addr_del_all(struct pim_interface *pim_ifp) | |
379 | { | |
d62a17ae | 380 | int changed = 0; |
381 | ||
d62a17ae | 382 | if (!list_isempty(pim_ifp->sec_addr_list)) { |
383 | changed = 1; | |
384 | /* remove all nodes and free up the list itself */ | |
385 | list_delete_all_node(pim_ifp->sec_addr_list); | |
d62a17ae | 386 | } |
387 | ||
388 | return changed; | |
7176984f | 389 | } |
390 | ||
391 | static int pim_sec_addr_update(struct interface *ifp) | |
392 | { | |
d62a17ae | 393 | struct pim_interface *pim_ifp = ifp->info; |
394 | struct connected *ifc; | |
395 | struct listnode *node; | |
396 | struct listnode *nextnode; | |
397 | struct pim_secondary_addr *sec_addr; | |
398 | int changed = 0; | |
399 | ||
996c9314 | 400 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
f09eaf1c | 401 | sec_addr->flags |= PIM_SEC_ADDRF_STALE; |
d62a17ae | 402 | } |
403 | ||
404 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
405 | struct prefix *p = ifc->address; | |
406 | ||
407 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
408 | continue; | |
409 | } | |
410 | ||
411 | if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) { | |
412 | /* don't add the primary address into the secondary | |
413 | * address list */ | |
414 | continue; | |
415 | } | |
416 | ||
417 | if (pim_sec_addr_add(pim_ifp, p)) { | |
418 | changed = 1; | |
419 | } | |
420 | } | |
421 | ||
f09eaf1c DS |
422 | /* Drop stale entries */ |
423 | for (ALL_LIST_ELEMENTS(pim_ifp->sec_addr_list, node, nextnode, | |
424 | sec_addr)) { | |
425 | if (sec_addr->flags & PIM_SEC_ADDRF_STALE) { | |
426 | pim_sec_addr_del(pim_ifp, sec_addr); | |
427 | changed = 1; | |
d62a17ae | 428 | } |
429 | } | |
430 | ||
431 | return changed; | |
7176984f | 432 | } |
433 | ||
4763cd0e | 434 | static int detect_secondary_address_change(struct interface *ifp, |
d62a17ae | 435 | int force_prim_as_any, |
436 | const char *caller) | |
12e41d03 | 437 | { |
d62a17ae | 438 | struct pim_interface *pim_ifp = ifp->info; |
439 | int changed = 0; | |
440 | ||
441 | if (force_prim_as_any) { | |
442 | /* if primary address is being forced to zero just flush the | |
443 | * secondary address list */ | |
444 | changed = pim_sec_addr_del_all(pim_ifp); | |
445 | } else { | |
446 | /* re-evaluate the secondary address list */ | |
447 | changed = pim_sec_addr_update(ifp); | |
448 | } | |
449 | ||
450 | return changed; | |
4763cd0e | 451 | } |
452 | ||
d62a17ae | 453 | static void detect_address_change(struct interface *ifp, int force_prim_as_any, |
454 | const char *caller) | |
4763cd0e | 455 | { |
d62a17ae | 456 | int changed = 0; |
457 | struct pim_interface *pim_ifp; | |
12e41d03 | 458 | |
d62a17ae | 459 | pim_ifp = ifp->info; |
460 | if (!pim_ifp) | |
461 | return; | |
4763cd0e | 462 | |
d62a17ae | 463 | if (detect_primary_address_change(ifp, force_prim_as_any, caller)) { |
464 | changed = 1; | |
465 | } | |
12e41d03 | 466 | |
d62a17ae | 467 | if (detect_secondary_address_change(ifp, force_prim_as_any, caller)) { |
468 | changed = 1; | |
469 | } | |
4763cd0e | 470 | |
471 | ||
d62a17ae | 472 | if (changed) { |
473 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
474 | return; | |
475 | } | |
4763cd0e | 476 | |
d62a17ae | 477 | pim_addr_change(ifp); |
478 | } | |
12e41d03 | 479 | |
d62a17ae | 480 | /* XXX: if we have unnumbered interfaces we need to run detect address |
481 | * address change on all of them when the lo address changes */ | |
12e41d03 DL |
482 | } |
483 | ||
4763cd0e | 484 | int pim_update_source_set(struct interface *ifp, struct in_addr source) |
12e41d03 | 485 | { |
d62a17ae | 486 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 487 | |
d62a17ae | 488 | if (!pim_ifp) { |
489 | return PIM_IFACE_NOT_FOUND; | |
490 | } | |
12e41d03 | 491 | |
d62a17ae | 492 | if (pim_ifp->update_source.s_addr == source.s_addr) { |
493 | return PIM_UPDATE_SOURCE_DUP; | |
494 | } | |
4763cd0e | 495 | |
d62a17ae | 496 | pim_ifp->update_source = source; |
15569c58 | 497 | detect_address_change(ifp, 0 /* force_prim_as_any */, __func__); |
4763cd0e | 498 | |
d62a17ae | 499 | return PIM_SUCCESS; |
12e41d03 DL |
500 | } |
501 | ||
502 | void pim_if_addr_add(struct connected *ifc) | |
503 | { | |
d62a17ae | 504 | struct pim_interface *pim_ifp; |
505 | struct interface *ifp; | |
506 | struct in_addr ifaddr; | |
650d9ad1 | 507 | bool vxlan_term; |
d62a17ae | 508 | |
509 | zassert(ifc); | |
510 | ||
511 | ifp = ifc->ifp; | |
512 | zassert(ifp); | |
513 | pim_ifp = ifp->info; | |
514 | if (!pim_ifp) | |
515 | return; | |
516 | ||
517 | if (!if_is_operative(ifp)) | |
518 | return; | |
519 | ||
520 | if (PIM_DEBUG_ZEBRA) { | |
521 | char buf[BUFSIZ]; | |
522 | prefix2str(ifc->address, buf, BUFSIZ); | |
523 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
5e81f5dd | 524 | __func__, ifp->name, ifp->ifindex, buf, |
d62a17ae | 525 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) |
526 | ? "secondary" | |
527 | : "primary"); | |
528 | } | |
529 | ||
530 | ifaddr = ifc->address->u.prefix4; | |
531 | ||
5e81f5dd | 532 | detect_address_change(ifp, 0, __func__); |
d62a17ae | 533 | |
2002dcdb DS |
534 | // if (ifc->address->family != AF_INET) |
535 | // return; | |
d62a17ae | 536 | |
537 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { | |
538 | struct igmp_sock *igmp; | |
539 | ||
540 | /* lookup IGMP socket */ | |
541 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
542 | ifaddr); | |
543 | if (!igmp) { | |
544 | /* if addr new, add IGMP socket */ | |
c77a04e4 DS |
545 | if (ifc->address->family == AF_INET) |
546 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, | |
f83f3966 MS |
547 | ifaddr, ifp, false); |
548 | } else if (igmp->mtrace_only) { | |
549 | igmp_sock_delete(igmp); | |
550 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, | |
551 | ifp, false); | |
d62a17ae | 552 | } |
553 | ||
554 | /* Replay Static IGMP groups */ | |
555 | if (pim_ifp->igmp_join_list) { | |
556 | struct listnode *node; | |
557 | struct listnode *nextnode; | |
558 | struct igmp_join *ij; | |
559 | int join_fd; | |
560 | ||
561 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, | |
562 | nextnode, ij)) { | |
563 | /* Close socket and reopen with Source and Group | |
564 | */ | |
565 | close(ij->sock_fd); | |
566 | join_fd = igmp_join_sock( | |
567 | ifp->name, ifp->ifindex, ij->group_addr, | |
568 | ij->source_addr); | |
569 | if (join_fd < 0) { | |
570 | char group_str[INET_ADDRSTRLEN]; | |
571 | char source_str[INET_ADDRSTRLEN]; | |
572 | pim_inet4_dump("<grp?>", ij->group_addr, | |
573 | group_str, | |
574 | sizeof(group_str)); | |
575 | pim_inet4_dump( | |
576 | "<src?>", ij->source_addr, | |
577 | source_str, sizeof(source_str)); | |
578 | zlog_warn( | |
579 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
5e81f5dd DS |
580 | __func__, group_str, source_str, |
581 | ifp->name); | |
d62a17ae | 582 | /* warning only */ |
583 | } else | |
584 | ij->sock_fd = join_fd; | |
585 | } | |
586 | } | |
587 | } /* igmp */ | |
f83f3966 MS |
588 | else { |
589 | struct igmp_sock *igmp; | |
590 | ||
591 | /* lookup IGMP socket */ | |
592 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
593 | ifaddr); | |
594 | if (ifc->address->family == AF_INET) { | |
595 | if (igmp) | |
596 | igmp_sock_delete(igmp); | |
597 | /* if addr new, add IGMP socket */ | |
598 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, | |
599 | ifp, true); | |
600 | } | |
601 | } /* igmp mtrace only */ | |
d62a17ae | 602 | |
603 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
604 | ||
605 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
606 | ||
607 | /* Interface has a valid socket ? */ | |
608 | if (pim_ifp->pim_sock_fd < 0) { | |
609 | if (pim_sock_add(ifp)) { | |
610 | zlog_warn( | |
611 | "Failure creating PIM socket for interface %s", | |
612 | ifp->name); | |
613 | } | |
614 | } | |
615 | struct pim_nexthop_cache *pnc = NULL; | |
616 | struct pim_rpf rpf; | |
617 | struct zclient *zclient = NULL; | |
618 | ||
619 | zclient = pim_zebra_zclient_get(); | |
620 | /* RP config might come prior to (local RP's interface) | |
621 | IF UP event. | |
622 | In this case, pnc would not have pim enabled | |
623 | nexthops. | |
624 | Once Interface is UP and pim info is available, | |
625 | reregister | |
626 | with RNH address to receive update and add the | |
627 | interface as nexthop. */ | |
628 | memset(&rpf, 0, sizeof(struct pim_rpf)); | |
629 | rpf.rpf_addr.family = AF_INET; | |
630 | rpf.rpf_addr.prefixlen = IPV4_MAX_BITLEN; | |
631 | rpf.rpf_addr.u.prefix4 = ifc->address->u.prefix4; | |
d0a4f55d | 632 | pnc = pim_nexthop_cache_find(pim_ifp->pim, &rpf); |
d62a17ae | 633 | if (pnc) |
64c86530 | 634 | pim_sendmsg_zebra_rnh(pim_ifp->pim, zclient, |
cf663ceb | 635 | pnc, |
d62a17ae | 636 | ZEBRA_NEXTHOP_REGISTER); |
637 | } | |
638 | } /* pim */ | |
639 | ||
640 | /* | |
641 | PIM or IGMP is enabled on interface, and there is at least one | |
642 | address assigned, then try to create a vif_index. | |
643 | */ | |
644 | if (pim_ifp->mroute_vif_index < 0) { | |
650d9ad1 AK |
645 | vxlan_term = pim_vxlan_is_term_dev_cfg(pim_ifp->pim, ifp); |
646 | pim_if_add_vif(ifp, false, vxlan_term); | |
d62a17ae | 647 | } |
648 | pim_ifchannel_scan_forward_start(ifp); | |
12e41d03 DL |
649 | } |
650 | ||
651 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
652 | { | |
d62a17ae | 653 | struct pim_interface *pim_ifp = ifc->ifp->info; |
654 | struct igmp_sock *igmp; | |
655 | struct in_addr ifaddr; | |
656 | ||
657 | if (ifc->address->family != AF_INET) { | |
658 | /* non-IPv4 address */ | |
659 | return; | |
660 | } | |
661 | ||
662 | if (!pim_ifp) { | |
663 | /* IGMP not enabled on interface */ | |
664 | return; | |
665 | } | |
666 | ||
667 | ifaddr = ifc->address->u.prefix4; | |
668 | ||
669 | /* lookup IGMP socket */ | |
670 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, ifaddr); | |
671 | if (igmp) { | |
672 | /* if addr found, del IGMP socket */ | |
673 | igmp_sock_delete(igmp); | |
674 | } | |
12e41d03 DL |
675 | } |
676 | ||
677 | static void pim_if_addr_del_pim(struct connected *ifc) | |
678 | { | |
d62a17ae | 679 | struct pim_interface *pim_ifp = ifc->ifp->info; |
12e41d03 | 680 | |
d62a17ae | 681 | if (ifc->address->family != AF_INET) { |
682 | /* non-IPv4 address */ | |
683 | return; | |
684 | } | |
12e41d03 | 685 | |
d62a17ae | 686 | if (!pim_ifp) { |
687 | /* PIM not enabled on interface */ | |
688 | return; | |
689 | } | |
690 | ||
691 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
692 | /* Interface keeps a valid primary address */ | |
693 | return; | |
694 | } | |
12e41d03 | 695 | |
d62a17ae | 696 | if (pim_ifp->pim_sock_fd < 0) { |
697 | /* Interface does not hold a valid socket any longer */ | |
698 | return; | |
699 | } | |
294b6d72 | 700 | |
d62a17ae | 701 | /* |
702 | pim_sock_delete() closes the socket, stops read and timer threads, | |
703 | and kills all neighbors. | |
704 | */ | |
705 | pim_sock_delete(ifc->ifp, | |
706 | "last address has been removed from interface"); | |
707 | } | |
12e41d03 | 708 | |
d62a17ae | 709 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) |
710 | { | |
711 | struct interface *ifp; | |
712 | ||
713 | zassert(ifc); | |
714 | ifp = ifc->ifp; | |
715 | zassert(ifp); | |
716 | ||
d62a17ae | 717 | if (PIM_DEBUG_ZEBRA) { |
718 | char buf[BUFSIZ]; | |
719 | prefix2str(ifc->address, buf, BUFSIZ); | |
720 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
15569c58 | 721 | __func__, ifp->name, ifp->ifindex, buf, |
d62a17ae | 722 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) |
723 | ? "secondary" | |
724 | : "primary"); | |
725 | } | |
12e41d03 | 726 | |
15569c58 | 727 | detect_address_change(ifp, force_prim_as_any, __func__); |
d62a17ae | 728 | |
729 | pim_if_addr_del_igmp(ifc); | |
730 | pim_if_addr_del_pim(ifc); | |
12e41d03 DL |
731 | } |
732 | ||
733 | void pim_if_addr_add_all(struct interface *ifp) | |
734 | { | |
d62a17ae | 735 | struct connected *ifc; |
736 | struct listnode *node; | |
737 | struct listnode *nextnode; | |
738 | int v4_addrs = 0; | |
739 | int v6_addrs = 0; | |
740 | struct pim_interface *pim_ifp = ifp->info; | |
650d9ad1 | 741 | bool vxlan_term; |
d62a17ae | 742 | |
743 | ||
744 | /* PIM/IGMP enabled ? */ | |
745 | if (!pim_ifp) | |
746 | return; | |
747 | ||
748 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
749 | struct prefix *p = ifc->address; | |
750 | ||
751 | if (p->family != AF_INET) | |
752 | v6_addrs++; | |
753 | else | |
754 | v4_addrs++; | |
755 | pim_if_addr_add(ifc); | |
756 | } | |
d8424057 | 757 | |
d62a17ae | 758 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { |
759 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
760 | ||
761 | /* Interface has a valid primary address ? */ | |
762 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
763 | ||
764 | /* Interface has a valid socket ? */ | |
765 | if (pim_ifp->pim_sock_fd < 0) { | |
766 | if (pim_sock_add(ifp)) { | |
767 | zlog_warn( | |
768 | "Failure creating PIM socket for interface %s", | |
769 | ifp->name); | |
770 | } | |
771 | } | |
772 | } | |
773 | } /* pim */ | |
774 | } | |
775 | /* | |
776 | * PIM or IGMP is enabled on interface, and there is at least one | |
777 | * address assigned, then try to create a vif_index. | |
778 | */ | |
779 | if (pim_ifp->mroute_vif_index < 0) { | |
650d9ad1 AK |
780 | vxlan_term = pim_vxlan_is_term_dev_cfg(pim_ifp->pim, ifp); |
781 | pim_if_add_vif(ifp, false, vxlan_term); | |
d62a17ae | 782 | } |
783 | pim_ifchannel_scan_forward_start(ifp); | |
784 | ||
fec883d9 | 785 | pim_rp_setup(pim_ifp->pim); |
d62a17ae | 786 | pim_rp_check_on_if_add(pim_ifp); |
12e41d03 DL |
787 | } |
788 | ||
789 | void pim_if_addr_del_all(struct interface *ifp) | |
790 | { | |
d62a17ae | 791 | struct connected *ifc; |
792 | struct listnode *node; | |
793 | struct listnode *nextnode; | |
5ec5d976 | 794 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
819f099b DS |
795 | struct pim_instance *pim; |
796 | ||
797 | if (!vrf) | |
798 | return; | |
799 | pim = vrf->info; | |
d62a17ae | 800 | |
801 | /* PIM/IGMP enabled ? */ | |
802 | if (!ifp->info) | |
803 | return; | |
12e41d03 | 804 | |
d62a17ae | 805 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { |
806 | struct prefix *p = ifc->address; | |
12e41d03 | 807 | |
d62a17ae | 808 | if (p->family != AF_INET) |
809 | continue; | |
12e41d03 | 810 | |
d62a17ae | 811 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); |
812 | } | |
da3dcffb | 813 | |
5ec5d976 DS |
814 | pim_rp_setup(pim); |
815 | pim_i_am_rp_re_evaluate(pim); | |
12e41d03 DL |
816 | } |
817 | ||
818 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
819 | { | |
d62a17ae | 820 | struct connected *ifc; |
821 | struct listnode *node; | |
822 | struct listnode *nextnode; | |
823 | ||
824 | /* PIM/IGMP enabled ? */ | |
825 | if (!ifp->info) | |
826 | return; | |
827 | ||
828 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
829 | struct prefix *p = ifc->address; | |
830 | ||
831 | if (p->family != AF_INET) | |
832 | continue; | |
833 | ||
834 | pim_if_addr_del_igmp(ifc); | |
835 | } | |
12e41d03 DL |
836 | } |
837 | ||
838 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
839 | { | |
d62a17ae | 840 | struct connected *ifc; |
841 | struct listnode *node; | |
842 | struct listnode *nextnode; | |
843 | ||
844 | /* PIM/IGMP enabled ? */ | |
845 | if (!ifp->info) | |
846 | return; | |
847 | ||
848 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
849 | struct prefix *p = ifc->address; | |
850 | ||
851 | if (p->family != AF_INET) | |
852 | continue; | |
853 | ||
854 | pim_if_addr_del_pim(ifc); | |
855 | } | |
12e41d03 DL |
856 | } |
857 | ||
d62a17ae | 858 | struct in_addr pim_find_primary_addr(struct interface *ifp) |
12e41d03 | 859 | { |
d62a17ae | 860 | struct connected *ifc; |
861 | struct listnode *node; | |
819f099b | 862 | struct in_addr addr = {0}; |
d62a17ae | 863 | int v4_addrs = 0; |
864 | int v6_addrs = 0; | |
865 | struct pim_interface *pim_ifp = ifp->info; | |
896b2044 | 866 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
d62a17ae | 867 | |
819f099b DS |
868 | if (!vrf) |
869 | return addr; | |
870 | ||
d62a17ae | 871 | if (pim_ifp && PIM_INADDR_ISNOT_ANY(pim_ifp->update_source)) { |
872 | return pim_ifp->update_source; | |
873 | } | |
874 | ||
875 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
876 | struct prefix *p = ifc->address; | |
877 | ||
878 | if (p->family != AF_INET) { | |
879 | v6_addrs++; | |
880 | continue; | |
881 | } | |
882 | ||
883 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
884 | zlog_warn( | |
885 | "%s: null IPv4 address connected to interface %s", | |
5e81f5dd | 886 | __func__, ifp->name); |
d62a17ae | 887 | continue; |
888 | } | |
889 | ||
890 | v4_addrs++; | |
891 | ||
892 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) | |
893 | continue; | |
894 | ||
895 | return p->u.prefix4; | |
896 | } | |
897 | ||
898 | /* | |
899 | * If we have no v4_addrs and v6 is configured | |
900 | * We probably are using unnumbered | |
901 | * So let's grab the loopbacks v4 address | |
902 | * and use that as the primary address | |
903 | */ | |
2430f057 | 904 | if (!v4_addrs && v6_addrs) { |
d62a17ae | 905 | struct interface *lo_ifp; |
2430f057 | 906 | |
fec883d9 | 907 | // DBS - Come back and check here |
896b2044 DS |
908 | if (ifp->vrf_id == VRF_DEFAULT) |
909 | lo_ifp = if_lookup_by_name("lo", vrf->vrf_id); | |
910 | else | |
911 | lo_ifp = if_lookup_by_name(vrf->name, vrf->vrf_id); | |
912 | ||
2430f057 | 913 | if (lo_ifp && (lo_ifp != ifp)) |
d62a17ae | 914 | return pim_find_primary_addr(lo_ifp); |
915 | } | |
916 | ||
917 | addr.s_addr = PIM_NET_INADDR_ANY; | |
918 | ||
919 | return addr; | |
12e41d03 DL |
920 | } |
921 | ||
d62a17ae | 922 | static int pim_iface_next_vif_index(struct interface *ifp) |
744d91b3 | 923 | { |
f88df3a6 DS |
924 | struct pim_interface *pim_ifp = ifp->info; |
925 | struct pim_instance *pim = pim_ifp->pim; | |
d62a17ae | 926 | int i; |
f88df3a6 | 927 | |
d62a17ae | 928 | /* |
929 | * The pimreg vif is always going to be in index 0 | |
930 | * of the table. | |
931 | */ | |
932 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
933 | return 0; | |
934 | ||
935 | for (i = 1; i < MAXVIFS; i++) { | |
f88df3a6 | 936 | if (pim->iface_vif_index[i] == 0) |
d62a17ae | 937 | return i; |
938 | } | |
939 | return MAXVIFS; | |
744d91b3 DS |
940 | } |
941 | ||
12e41d03 DL |
942 | /* |
943 | pim_if_add_vif() uses ifindex as vif_index | |
944 | ||
945 | see also pim_if_find_vifindex_by_ifindex() | |
946 | */ | |
b1891fa0 | 947 | int pim_if_add_vif(struct interface *ifp, bool ispimreg, bool is_vxlan_term) |
12e41d03 | 948 | { |
d62a17ae | 949 | struct pim_interface *pim_ifp = ifp->info; |
950 | struct in_addr ifaddr; | |
951 | unsigned char flags = 0; | |
952 | ||
953 | zassert(pim_ifp); | |
954 | ||
955 | if (pim_ifp->mroute_vif_index > 0) { | |
956 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
15569c58 DA |
957 | __func__, pim_ifp->mroute_vif_index, ifp->name, |
958 | ifp->ifindex); | |
d62a17ae | 959 | return -1; |
960 | } | |
961 | ||
962 | if (ifp->ifindex < 0) { | |
15569c58 DA |
963 | zlog_warn("%s: ifindex=%d < 1 on interface %s", __func__, |
964 | ifp->ifindex, ifp->name); | |
d62a17ae | 965 | return -2; |
966 | } | |
967 | ||
968 | ifaddr = pim_ifp->primary_address; | |
b1891fa0 | 969 | if (!ispimreg && !is_vxlan_term && PIM_INADDR_IS_ANY(ifaddr)) { |
d62a17ae | 970 | zlog_warn( |
971 | "%s: could not get address for interface %s ifindex=%d", | |
15569c58 | 972 | __func__, ifp->name, ifp->ifindex); |
d62a17ae | 973 | return -4; |
974 | } | |
975 | ||
976 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index(ifp); | |
977 | ||
978 | if (pim_ifp->mroute_vif_index >= MAXVIFS) { | |
979 | zlog_warn( | |
980 | "%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
15569c58 | 981 | __func__, MAXVIFS, ifp->name); |
d62a17ae | 982 | return -3; |
983 | } | |
984 | ||
985 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
986 | flags = VIFF_REGISTER; | |
b3f2bf7c | 987 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 988 | else |
989 | flags = VIFF_USE_IFINDEX; | |
b3f2bf7c RW |
990 | #endif |
991 | ||
d62a17ae | 992 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
993 | /* pim_mroute_add_vif reported error */ | |
994 | return -5; | |
995 | } | |
12e41d03 | 996 | |
f88df3a6 | 997 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 1; |
269c1fe1 AK |
998 | |
999 | /* if the device qualifies as pim_vxlan iif/oif update vxlan entries */ | |
1000 | pim_vxlan_add_vif(ifp); | |
1001 | ||
d62a17ae | 1002 | return 0; |
12e41d03 DL |
1003 | } |
1004 | ||
12e41d03 DL |
1005 | int pim_if_del_vif(struct interface *ifp) |
1006 | { | |
d62a17ae | 1007 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 1008 | |
d62a17ae | 1009 | if (pim_ifp->mroute_vif_index < 1) { |
1010 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
15569c58 DA |
1011 | __func__, pim_ifp->mroute_vif_index, ifp->name, |
1012 | ifp->ifindex); | |
d62a17ae | 1013 | return -1; |
1014 | } | |
12e41d03 | 1015 | |
269c1fe1 AK |
1016 | /* if the device was a pim_vxlan iif/oif update vxlan mroute entries */ |
1017 | pim_vxlan_del_vif(ifp); | |
1018 | ||
ea3d967b | 1019 | pim_mroute_del_vif(ifp); |
12e41d03 | 1020 | |
d62a17ae | 1021 | /* |
1022 | Update vif_index | |
1023 | */ | |
f88df3a6 | 1024 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 0; |
12e41d03 | 1025 | |
d62a17ae | 1026 | pim_ifp->mroute_vif_index = -1; |
12e41d03 | 1027 | |
d62a17ae | 1028 | return 0; |
12e41d03 DL |
1029 | } |
1030 | ||
da82728d | 1031 | // DBS - VRF Revist |
7cfc7bcf DS |
1032 | struct interface *pim_if_find_by_vif_index(struct pim_instance *pim, |
1033 | ifindex_t vif_index) | |
12e41d03 | 1034 | { |
d62a17ae | 1035 | struct interface *ifp; |
12e41d03 | 1036 | |
451fda4f | 1037 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
7cfc7bcf DS |
1038 | if (ifp->info) { |
1039 | struct pim_interface *pim_ifp; | |
1040 | pim_ifp = ifp->info; | |
b892f1dd | 1041 | |
7cfc7bcf DS |
1042 | if (vif_index == pim_ifp->mroute_vif_index) |
1043 | return ifp; | |
d62a17ae | 1044 | } |
1045 | } | |
12e41d03 | 1046 | |
d62a17ae | 1047 | return 0; |
12e41d03 DL |
1048 | } |
1049 | ||
1050 | /* | |
1051 | pim_if_add_vif() uses ifindex as vif_index | |
1052 | */ | |
7cfc7bcf | 1053 | int pim_if_find_vifindex_by_ifindex(struct pim_instance *pim, ifindex_t ifindex) |
12e41d03 | 1054 | { |
d62a17ae | 1055 | struct pim_interface *pim_ifp; |
1056 | struct interface *ifp; | |
ae90dfbb | 1057 | |
7cfc7bcf | 1058 | ifp = if_lookup_by_index(ifindex, pim->vrf_id); |
d62a17ae | 1059 | if (!ifp || !ifp->info) |
1060 | return -1; | |
1061 | pim_ifp = ifp->info; | |
ae90dfbb | 1062 | |
d62a17ae | 1063 | return pim_ifp->mroute_vif_index; |
12e41d03 DL |
1064 | } |
1065 | ||
1066 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
1067 | { | |
d62a17ae | 1068 | struct pim_interface *pim_ifp; |
12e41d03 | 1069 | |
d62a17ae | 1070 | pim_ifp = ifp->info; |
1071 | zassert(pim_ifp); | |
1072 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
12e41d03 | 1073 | |
d62a17ae | 1074 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; |
12e41d03 DL |
1075 | } |
1076 | ||
1077 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
1078 | { | |
d62a17ae | 1079 | if (pim_if_lan_delay_enabled(ifp)) { |
1080 | struct pim_interface *pim_ifp; | |
1081 | pim_ifp = ifp->info; | |
1082 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
1083 | } else { | |
1084 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
1085 | } | |
12e41d03 DL |
1086 | } |
1087 | ||
1088 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
1089 | { | |
d62a17ae | 1090 | if (pim_if_lan_delay_enabled(ifp)) { |
1091 | struct pim_interface *pim_ifp; | |
1092 | pim_ifp = ifp->info; | |
1093 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
1094 | } else { | |
1095 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
1096 | } | |
12e41d03 DL |
1097 | } |
1098 | ||
1099 | int pim_if_t_override_msec(struct interface *ifp) | |
1100 | { | |
d62a17ae | 1101 | int effective_override_interval_msec; |
1102 | int t_override_msec; | |
12e41d03 | 1103 | |
d62a17ae | 1104 | effective_override_interval_msec = |
1105 | pim_if_effective_override_interval_msec(ifp); | |
12e41d03 | 1106 | |
5920b3eb RZ |
1107 | t_override_msec = |
1108 | frr_weak_random() % (effective_override_interval_msec + 1); | |
12e41d03 | 1109 | |
d62a17ae | 1110 | return t_override_msec; |
12e41d03 DL |
1111 | } |
1112 | ||
1113 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
1114 | { | |
d62a17ae | 1115 | return pim_if_effective_propagation_delay_msec(ifp) |
1116 | + pim_if_effective_override_interval_msec(ifp); | |
12e41d03 DL |
1117 | } |
1118 | ||
1119 | /* | |
1120 | RFC 4601: 4.1.6. State Summarization Macros | |
1121 | ||
1122 | The function NBR( I, A ) uses information gathered through PIM Hello | |
1123 | messages to map the IP address A of a directly connected PIM | |
1124 | neighbor router on interface I to the primary IP address of the same | |
1125 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
1126 | address that it uses as the source of its PIM Hello messages. | |
1127 | */ | |
1128 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
1129 | struct in_addr addr) | |
1130 | { | |
d62a17ae | 1131 | struct listnode *neighnode; |
1132 | struct pim_neighbor *neigh; | |
1133 | struct pim_interface *pim_ifp; | |
1134 | struct prefix p; | |
1135 | ||
1136 | zassert(ifp); | |
1137 | ||
1138 | pim_ifp = ifp->info; | |
1139 | if (!pim_ifp) { | |
5e81f5dd DS |
1140 | zlog_warn("%s: multicast not enabled on interface %s", __func__, |
1141 | ifp->name); | |
d62a17ae | 1142 | return 0; |
1143 | } | |
1144 | ||
1145 | p.family = AF_INET; | |
1146 | p.u.prefix4 = addr; | |
1147 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
1148 | ||
1149 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, | |
1150 | neigh)) { | |
1151 | ||
1152 | /* primary address ? */ | |
1153 | if (neigh->source_addr.s_addr == addr.s_addr) | |
1154 | return neigh; | |
1155 | ||
1156 | /* secondary address ? */ | |
1157 | if (pim_neighbor_find_secondary(neigh, &p)) | |
1158 | return neigh; | |
1159 | } | |
1160 | ||
1161 | if (PIM_DEBUG_PIM_TRACE) { | |
1162 | char addr_str[INET_ADDRSTRLEN]; | |
1163 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); | |
1164 | zlog_debug( | |
1165 | "%s: neighbor not found for address %s on interface %s", | |
5e81f5dd | 1166 | __func__, addr_str, ifp->name); |
d62a17ae | 1167 | } |
1168 | ||
1169 | return NULL; | |
12e41d03 DL |
1170 | } |
1171 | ||
1172 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
1173 | { | |
d62a17ae | 1174 | struct pim_interface *pim_ifp; |
1175 | long t_suppressed_msec; | |
1176 | uint32_t ramount = 0; | |
12e41d03 | 1177 | |
d62a17ae | 1178 | pim_ifp = ifp->info; |
1179 | zassert(pim_ifp); | |
12e41d03 | 1180 | |
d62a17ae | 1181 | /* join suppression disabled ? */ |
1182 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
1183 | return 0; | |
12e41d03 | 1184 | |
d62a17ae | 1185 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ |
5920b3eb | 1186 | ramount = 1100 + (frr_weak_random() % (1400 - 1100 + 1)); |
5b45753e | 1187 | t_suppressed_msec = router->t_periodic * ramount; |
12e41d03 | 1188 | |
d62a17ae | 1189 | return t_suppressed_msec; |
12e41d03 DL |
1190 | } |
1191 | ||
1192 | static void igmp_join_free(struct igmp_join *ij) | |
1193 | { | |
d62a17ae | 1194 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); |
12e41d03 DL |
1195 | } |
1196 | ||
1197 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
1198 | struct in_addr group_addr, | |
1199 | struct in_addr source_addr) | |
1200 | { | |
d62a17ae | 1201 | struct listnode *node; |
1202 | struct igmp_join *ij; | |
12e41d03 | 1203 | |
d62a17ae | 1204 | zassert(join_list); |
12e41d03 | 1205 | |
d62a17ae | 1206 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { |
1207 | if ((group_addr.s_addr == ij->group_addr.s_addr) | |
1208 | && (source_addr.s_addr == ij->source_addr.s_addr)) | |
1209 | return ij; | |
1210 | } | |
12e41d03 | 1211 | |
d62a17ae | 1212 | return 0; |
12e41d03 DL |
1213 | } |
1214 | ||
d62a17ae | 1215 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
1216 | struct in_addr group_addr, struct in_addr source_addr) | |
12e41d03 | 1217 | { |
d62a17ae | 1218 | int join_fd; |
12e41d03 | 1219 | |
d62a17ae | 1220 | join_fd = pim_socket_raw(IPPROTO_IGMP); |
1221 | if (join_fd < 0) { | |
1222 | return -1; | |
1223 | } | |
12e41d03 | 1224 | |
c936e76f DS |
1225 | if (pim_igmp_join_source(join_fd, ifindex, group_addr, source_addr)) { |
1226 | char group_str[INET_ADDRSTRLEN]; | |
1227 | char source_str[INET_ADDRSTRLEN]; | |
1228 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1229 | sizeof(group_str)); | |
1230 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1231 | sizeof(source_str)); | |
1232 | zlog_warn( | |
1233 | "%s: setsockopt(fd=%d) failure for IGMP group %s source %s ifindex %d on interface %s: errno=%d: %s", | |
15569c58 DA |
1234 | __func__, join_fd, group_str, source_str, ifindex, |
1235 | ifname, errno, safe_strerror(errno)); | |
c936e76f | 1236 | |
d62a17ae | 1237 | close(join_fd); |
1238 | return -2; | |
1239 | } | |
12e41d03 | 1240 | |
d62a17ae | 1241 | return join_fd; |
12e41d03 DL |
1242 | } |
1243 | ||
1244 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1245 | struct in_addr group_addr, | |
1246 | struct in_addr source_addr) | |
1247 | { | |
d62a17ae | 1248 | struct pim_interface *pim_ifp; |
1249 | struct igmp_join *ij; | |
1250 | int join_fd; | |
1251 | ||
1252 | pim_ifp = ifp->info; | |
1253 | zassert(pim_ifp); | |
1254 | ||
1255 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, | |
1256 | source_addr); | |
1257 | if (join_fd < 0) { | |
1258 | char group_str[INET_ADDRSTRLEN]; | |
1259 | char source_str[INET_ADDRSTRLEN]; | |
c936e76f | 1260 | |
d62a17ae | 1261 | pim_inet4_dump("<grp?>", group_addr, group_str, |
1262 | sizeof(group_str)); | |
1263 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1264 | sizeof(source_str)); | |
1265 | zlog_warn( | |
1266 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
15569c58 | 1267 | __func__, group_str, source_str, ifp->name); |
d62a17ae | 1268 | return 0; |
1269 | } | |
1270 | ||
1271 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); | |
d62a17ae | 1272 | |
1273 | ij->sock_fd = join_fd; | |
1274 | ij->group_addr = group_addr; | |
1275 | ij->source_addr = source_addr; | |
1276 | ij->sock_creation = pim_time_monotonic_sec(); | |
1277 | ||
1278 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1279 | ||
1280 | return ij; | |
12e41d03 DL |
1281 | } |
1282 | ||
37664928 | 1283 | ferr_r pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr, |
996c9314 | 1284 | struct in_addr source_addr) |
12e41d03 | 1285 | { |
d62a17ae | 1286 | struct pim_interface *pim_ifp; |
1287 | struct igmp_join *ij; | |
1288 | ||
1289 | pim_ifp = ifp->info; | |
1290 | if (!pim_ifp) { | |
37664928 DS |
1291 | return ferr_cfg_invalid("multicast not enabled on interface %s", |
1292 | ifp->name); | |
d62a17ae | 1293 | } |
1294 | ||
1295 | if (!pim_ifp->igmp_join_list) { | |
1296 | pim_ifp->igmp_join_list = list_new(); | |
d62a17ae | 1297 | pim_ifp->igmp_join_list->del = (void (*)(void *))igmp_join_free; |
1298 | } | |
1299 | ||
1300 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
53d829f5 DW |
1301 | |
1302 | /* This interface has already been configured to join this IGMP group | |
1303 | */ | |
d62a17ae | 1304 | if (ij) { |
53d829f5 | 1305 | return ferr_ok(); |
d62a17ae | 1306 | } |
1307 | ||
11884868 | 1308 | (void)igmp_join_new(ifp, group_addr, source_addr); |
d62a17ae | 1309 | |
1310 | if (PIM_DEBUG_IGMP_EVENTS) { | |
1311 | char group_str[INET_ADDRSTRLEN]; | |
1312 | char source_str[INET_ADDRSTRLEN]; | |
1313 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1314 | sizeof(group_str)); | |
1315 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1316 | sizeof(source_str)); | |
1317 | zlog_debug( | |
1318 | "%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
15569c58 | 1319 | __func__, source_str, group_str, ifp->name); |
d62a17ae | 1320 | } |
12e41d03 | 1321 | |
37664928 | 1322 | return ferr_ok(); |
d62a17ae | 1323 | } |
12e41d03 DL |
1324 | |
1325 | ||
d62a17ae | 1326 | int pim_if_igmp_join_del(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1327 | struct in_addr source_addr) |
1328 | { | |
d62a17ae | 1329 | struct pim_interface *pim_ifp; |
1330 | struct igmp_join *ij; | |
1331 | ||
1332 | pim_ifp = ifp->info; | |
1333 | if (!pim_ifp) { | |
15569c58 DA |
1334 | zlog_warn("%s: multicast not enabled on interface %s", __func__, |
1335 | ifp->name); | |
d62a17ae | 1336 | return -1; |
1337 | } | |
1338 | ||
1339 | if (!pim_ifp->igmp_join_list) { | |
15569c58 DA |
1340 | zlog_warn("%s: no IGMP join on interface %s", __func__, |
1341 | ifp->name); | |
d62a17ae | 1342 | return -2; |
1343 | } | |
1344 | ||
1345 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1346 | if (!ij) { | |
1347 | char group_str[INET_ADDRSTRLEN]; | |
1348 | char source_str[INET_ADDRSTRLEN]; | |
1349 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1350 | sizeof(group_str)); | |
1351 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1352 | sizeof(source_str)); | |
1353 | zlog_warn( | |
1354 | "%s: could not find IGMP group %s source %s on interface %s", | |
15569c58 | 1355 | __func__, group_str, source_str, ifp->name); |
d62a17ae | 1356 | return -3; |
1357 | } | |
1358 | ||
1359 | if (close(ij->sock_fd)) { | |
1360 | char group_str[INET_ADDRSTRLEN]; | |
1361 | char source_str[INET_ADDRSTRLEN]; | |
1362 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1363 | sizeof(group_str)); | |
1364 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1365 | sizeof(source_str)); | |
1366 | zlog_warn( | |
1367 | "%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
15569c58 DA |
1368 | __func__, ij->sock_fd, group_str, source_str, ifp->name, |
1369 | errno, safe_strerror(errno)); | |
d62a17ae | 1370 | /* warning only */ |
1371 | } | |
1372 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1373 | igmp_join_free(ij); | |
1374 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
6a154c88 | 1375 | list_delete(&pim_ifp->igmp_join_list); |
d62a17ae | 1376 | pim_ifp->igmp_join_list = 0; |
1377 | } | |
1378 | ||
1379 | return 0; | |
12e41d03 DL |
1380 | } |
1381 | ||
1382 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1383 | { | |
d62a17ae | 1384 | struct pim_interface *pim_ifp; |
1385 | struct listnode *node; | |
1386 | struct listnode *nextnode; | |
1387 | struct igmp_join *ij; | |
1388 | ||
1389 | pim_ifp = ifp->info; | |
1390 | if (!pim_ifp) { | |
5e81f5dd DS |
1391 | zlog_warn("%s: multicast not enabled on interface %s", __func__, |
1392 | ifp->name); | |
d62a17ae | 1393 | return; |
1394 | } | |
1395 | ||
1396 | if (!pim_ifp->igmp_join_list) | |
1397 | return; | |
1398 | ||
1399 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1400 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
12e41d03 DL |
1401 | } |
1402 | ||
1403 | /* | |
1404 | RFC 4601 | |
1405 | ||
1406 | Transitions from "I am Assert Loser" State | |
1407 | ||
1408 | Current Winner's GenID Changes or NLT Expires | |
1409 | ||
1410 | The Neighbor Liveness Timer associated with the current winner | |
1411 | expires or we receive a Hello message from the current winner | |
1412 | reporting a different GenID from the one it previously reported. | |
1413 | This indicates that the current winner's interface or router has | |
1414 | gone down (and may have come back up), and so we must assume it no | |
1415 | longer knows it was the winner. | |
1416 | */ | |
1417 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1418 | struct in_addr neigh_addr) | |
1419 | { | |
d62a17ae | 1420 | struct pim_interface *pim_ifp; |
d62a17ae | 1421 | struct pim_ifchannel *ch; |
1422 | ||
1423 | pim_ifp = ifp->info; | |
1424 | zassert(pim_ifp); | |
1425 | ||
a2addae8 | 1426 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1427 | /* Is (S,G,I) assert loser ? */ |
1428 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1429 | continue; | |
1430 | /* Dead neighbor was winner ? */ | |
1431 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1432 | continue; | |
1433 | ||
1434 | assert_action_a5(ch); | |
1435 | } | |
12e41d03 DL |
1436 | } |
1437 | ||
1438 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1439 | { | |
d62a17ae | 1440 | struct pim_ifchannel *ch; |
12e41d03 | 1441 | |
d62a17ae | 1442 | /* clear off flag from interface's upstreams */ |
a2addae8 | 1443 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1444 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED( |
1445 | ch->upstream->flags); | |
1446 | } | |
12e41d03 | 1447 | |
d62a17ae | 1448 | /* scan per-interface (S,G,I) state on this I interface */ |
a2addae8 | 1449 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1450 | struct pim_upstream *up = ch->upstream; |
12e41d03 | 1451 | |
d62a17ae | 1452 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) |
1453 | continue; | |
12e41d03 | 1454 | |
d62a17ae | 1455 | /* update join_desired for the global (S,G) state */ |
9b29ea95 | 1456 | pim_upstream_update_join_desired(pim_ifp->pim, up); |
d62a17ae | 1457 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); |
1458 | } | |
12e41d03 DL |
1459 | } |
1460 | ||
1461 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1462 | { | |
d62a17ae | 1463 | struct pim_interface *pim_ifp; |
d62a17ae | 1464 | struct pim_ifchannel *ch; |
1465 | ||
1466 | pim_ifp = ifp->info; | |
1467 | if (!pim_ifp) | |
1468 | return; | |
1469 | ||
a2addae8 | 1470 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1471 | pim_ifchannel_update_assert_tracking_desired(ch); |
1472 | } | |
12e41d03 | 1473 | } |
c992c9a0 DS |
1474 | |
1475 | /* | |
1476 | * PIM wants to have an interface pointer for everything it does. | |
1477 | * The pimreg is a special interface that we have that is not | |
1478 | * quite an inteface but a VIF is created for it. | |
1479 | */ | |
43e40fdf | 1480 | void pim_if_create_pimreg(struct pim_instance *pim) |
c992c9a0 | 1481 | { |
bcc24579 | 1482 | char pimreg_name[INTERFACE_NAMSIZ]; |
c992c9a0 | 1483 | |
43e40fdf | 1484 | if (!pim->regiface) { |
afa2b179 | 1485 | if (pim->vrf_id == VRF_DEFAULT) |
bcc24579 | 1486 | strlcpy(pimreg_name, "pimreg", sizeof(pimreg_name)); |
afa2b179 | 1487 | else |
bcc24579 RW |
1488 | snprintf(pimreg_name, sizeof(pimreg_name), "pimreg%u", |
1489 | pim->vrf->data.l.table_id); | |
afa2b179 | 1490 | |
d5c65bf1 | 1491 | pim->regiface = if_create_name(pimreg_name, pim->vrf_id); |
43e40fdf DS |
1492 | pim->regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; |
1493 | ||
b1891fa0 AK |
1494 | pim_if_new(pim->regiface, false, false, true, |
1495 | false /*vxlan_term*/); | |
85d25587 DS |
1496 | /* |
1497 | * On vrf moves we delete the interface if there | |
1498 | * is nothing going on with it. We cannot have | |
1499 | * the pimregiface deleted. | |
1500 | */ | |
1501 | pim->regiface->configured = true; | |
1502 | ||
d62a17ae | 1503 | } |
c992c9a0 | 1504 | } |
3565202d | 1505 | |
d62a17ae | 1506 | int pim_if_connected_to_source(struct interface *ifp, struct in_addr src) |
3565202d | 1507 | { |
d62a17ae | 1508 | struct listnode *cnode; |
1509 | struct connected *c; | |
1510 | struct prefix p; | |
1511 | ||
1512 | if (!ifp) | |
1513 | return 0; | |
1514 | ||
1515 | p.family = AF_INET; | |
1516 | p.u.prefix4 = src; | |
1517 | p.prefixlen = IPV4_MAX_BITLEN; | |
1518 | ||
1519 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
1520 | if ((c->address->family == AF_INET) | |
1521 | && prefix_match(CONNECTED_PREFIX(c), &p)) { | |
1522 | return 1; | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | return 0; | |
3565202d | 1527 | } |
11699c47 | 1528 | |
e55a43d4 | 1529 | bool pim_if_is_vrf_device(struct interface *ifp) |
90133de6 | 1530 | { |
e55a43d4 DS |
1531 | if (if_is_vrf(ifp)) |
1532 | return true; | |
90133de6 | 1533 | |
e55a43d4 | 1534 | return false; |
90133de6 | 1535 | } |
ad7b74c4 DS |
1536 | |
1537 | int pim_if_ifchannel_count(struct pim_interface *pim_ifp) | |
1538 | { | |
1539 | struct pim_ifchannel *ch; | |
1540 | int count = 0; | |
1541 | ||
a2addae8 | 1542 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
ad7b74c4 DS |
1543 | count++; |
1544 | } | |
1545 | ||
1546 | return count; | |
1547 | } | |
138c5a74 DS |
1548 | |
1549 | int pim_ifp_create(struct interface *ifp) | |
1550 | { | |
ef7bd2a3 DS |
1551 | struct pim_instance *pim; |
1552 | ||
1553 | pim = pim_get_pim_instance(ifp->vrf_id); | |
1554 | if (PIM_DEBUG_ZEBRA) { | |
1555 | zlog_debug( | |
1556 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1557 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1558 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
ef7bd2a3 DS |
1559 | if_is_operative(ifp)); |
1560 | } | |
1561 | ||
1562 | if (if_is_operative(ifp)) { | |
1563 | struct pim_interface *pim_ifp; | |
1564 | ||
1565 | pim_ifp = ifp->info; | |
1566 | /* | |
1567 | * If we have a pim_ifp already and this is an if_add | |
1568 | * that means that we probably have a vrf move event | |
1569 | * If that is the case, set the proper vrfness. | |
1570 | */ | |
1571 | if (pim_ifp) | |
1572 | pim_ifp->pim = pim; | |
1573 | pim_if_addr_add_all(ifp); | |
1574 | } | |
1575 | ||
1576 | /* | |
1577 | * If we are a vrf device that is up, open up the pim_socket for | |
1578 | * listening | |
1579 | * to incoming pim messages irrelevant if the user has configured us | |
1580 | * for pim or not. | |
1581 | */ | |
1582 | if (pim_if_is_vrf_device(ifp)) { | |
1583 | struct pim_interface *pim_ifp; | |
1584 | ||
1585 | if (!ifp->info) { | |
1586 | pim_ifp = pim_if_new(ifp, false, false, false, | |
1587 | false /*vxlan_term*/); | |
1588 | ifp->info = pim_ifp; | |
1589 | } | |
1590 | ||
1591 | pim_sock_add(ifp); | |
1592 | } | |
1593 | ||
1594 | if (!strncmp(ifp->name, PIM_VXLAN_TERM_DEV_NAME, | |
ccf696e8 | 1595 | sizeof(PIM_VXLAN_TERM_DEV_NAME))) { |
1596 | if (pim->mcast_if_count < MAXVIFS) | |
1597 | pim_vxlan_add_term_dev(pim, ifp); | |
1598 | else | |
1599 | zlog_warn( | |
1600 | "%s: Cannot enable pim on %s. MAXVIFS(%d) reached. Deleting and readding the vxlan termimation device after unconfiguring pim from other interfaces may succeed.", | |
1601 | __func__, ifp->name, MAXVIFS); | |
1602 | } | |
ef7bd2a3 | 1603 | |
138c5a74 DS |
1604 | return 0; |
1605 | } | |
1606 | ||
1607 | int pim_ifp_up(struct interface *ifp) | |
1608 | { | |
85d25587 | 1609 | struct pim_interface *pim_ifp; |
ddbf3e60 DS |
1610 | struct pim_instance *pim; |
1611 | uint32_t table_id; | |
1612 | ||
1613 | if (PIM_DEBUG_ZEBRA) { | |
1614 | zlog_debug( | |
1615 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1616 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1617 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
ddbf3e60 DS |
1618 | if_is_operative(ifp)); |
1619 | } | |
1620 | ||
1621 | pim = pim_get_pim_instance(ifp->vrf_id); | |
ddbf3e60 | 1622 | |
85d25587 DS |
1623 | pim_ifp = ifp->info; |
1624 | /* | |
1625 | * If we have a pim_ifp already and this is an if_add | |
1626 | * that means that we probably have a vrf move event | |
1627 | * If that is the case, set the proper vrfness. | |
1628 | */ | |
1629 | if (pim_ifp) | |
1630 | pim_ifp->pim = pim; | |
ddbf3e60 | 1631 | |
85d25587 DS |
1632 | /* |
1633 | pim_if_addr_add_all() suffices for bringing up both IGMP and | |
1634 | PIM | |
1635 | */ | |
1636 | pim_if_addr_add_all(ifp); | |
ddbf3e60 DS |
1637 | |
1638 | /* | |
1639 | * If we have a pimreg device callback and it's for a specific | |
1640 | * table set the master appropriately | |
1641 | */ | |
1642 | if (sscanf(ifp->name, "pimreg%" SCNu32, &table_id) == 1) { | |
1643 | struct vrf *vrf; | |
1644 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { | |
1645 | if ((table_id == vrf->data.l.table_id) | |
1646 | && (ifp->vrf_id != vrf->vrf_id)) { | |
1647 | struct interface *master = if_lookup_by_name( | |
1648 | vrf->name, vrf->vrf_id); | |
1649 | ||
1650 | if (!master) { | |
1651 | zlog_debug( | |
1652 | "%s: Unable to find Master interface for %s", | |
15569c58 | 1653 | __func__, vrf->name); |
ddbf3e60 DS |
1654 | return 0; |
1655 | } | |
1656 | pim_zebra_interface_set_master(master, ifp); | |
1657 | } | |
1658 | } | |
1659 | } | |
138c5a74 DS |
1660 | return 0; |
1661 | } | |
1662 | ||
1663 | int pim_ifp_down(struct interface *ifp) | |
1664 | { | |
b0b69e59 DS |
1665 | if (PIM_DEBUG_ZEBRA) { |
1666 | zlog_debug( | |
1667 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1668 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1669 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
b0b69e59 DS |
1670 | if_is_operative(ifp)); |
1671 | } | |
1672 | ||
1673 | if (!if_is_operative(ifp)) { | |
1674 | pim_ifchannel_delete_all(ifp); | |
1675 | /* | |
1676 | pim_if_addr_del_all() suffices for shutting down IGMP, | |
1677 | but not for shutting down PIM | |
1678 | */ | |
1679 | pim_if_addr_del_all(ifp); | |
1680 | ||
1681 | /* | |
1682 | pim_sock_delete() closes the socket, stops read and timer | |
1683 | threads, | |
1684 | and kills all neighbors. | |
1685 | */ | |
1686 | if (ifp->info) { | |
1687 | pim_sock_delete(ifp, "link down"); | |
1688 | } | |
1689 | } | |
1690 | ||
1691 | if (ifp->info) | |
1692 | pim_if_del_vif(ifp); | |
1693 | ||
138c5a74 DS |
1694 | return 0; |
1695 | } | |
1696 | ||
1697 | int pim_ifp_destroy(struct interface *ifp) | |
1698 | { | |
3c3c3252 DS |
1699 | struct pim_instance *pim; |
1700 | ||
1701 | if (PIM_DEBUG_ZEBRA) { | |
1702 | zlog_debug( | |
1703 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1704 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1705 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
3c3c3252 DS |
1706 | if_is_operative(ifp)); |
1707 | } | |
1708 | ||
1709 | if (!if_is_operative(ifp)) | |
1710 | pim_if_addr_del_all(ifp); | |
1711 | ||
1712 | pim = pim_get_pim_instance(ifp->vrf_id); | |
1713 | if (pim && pim->vxlan.term_if == ifp) | |
1714 | pim_vxlan_del_term_dev(pim); | |
1715 | ||
138c5a74 DS |
1716 | return 0; |
1717 | } |