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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; | |
46a9ea8b | 141 | pim_ifp->am_i_dr = false; |
19de48b9 | 142 | |
d62a17ae | 143 | /* |
144 | RFC 3376: 8.3. Query Response Interval | |
145 | The number of seconds represented by the [Query Response Interval] | |
146 | must be less than the [Query Interval]. | |
147 | */ | |
148 | zassert(pim_ifp->igmp_query_max_response_time_dsec | |
149 | < pim_ifp->igmp_default_query_interval); | |
150 | ||
151 | if (pim) | |
152 | PIM_IF_DO_PIM(pim_ifp->options); | |
153 | if (igmp) | |
154 | PIM_IF_DO_IGMP(pim_ifp->options); | |
155 | ||
156 | PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(pim_ifp->options); | |
157 | ||
158 | pim_ifp->igmp_join_list = NULL; | |
159 | pim_ifp->igmp_socket_list = NULL; | |
160 | pim_ifp->pim_neighbor_list = NULL; | |
161 | pim_ifp->upstream_switch_list = NULL; | |
d62a17ae | 162 | pim_ifp->pim_generation_id = 0; |
163 | ||
164 | /* list of struct igmp_sock */ | |
165 | pim_ifp->igmp_socket_list = list_new(); | |
d62a17ae | 166 | pim_ifp->igmp_socket_list->del = (void (*)(void *))igmp_sock_free; |
167 | ||
168 | /* list of struct pim_neighbor */ | |
169 | pim_ifp->pim_neighbor_list = list_new(); | |
d62a17ae | 170 | pim_ifp->pim_neighbor_list->del = (void (*)(void *))pim_neighbor_free; |
171 | ||
172 | pim_ifp->upstream_switch_list = list_new(); | |
69ccd63e DS |
173 | pim_ifp->upstream_switch_list->del = |
174 | (void (*)(void *))pim_jp_agg_group_list_free; | |
175 | pim_ifp->upstream_switch_list->cmp = pim_jp_agg_group_list_cmp; | |
d62a17ae | 176 | |
f09eaf1c | 177 | pim_ifp->sec_addr_list = list_new(); |
f09eaf1c DS |
178 | pim_ifp->sec_addr_list->del = (void (*)(void *))pim_sec_addr_free; |
179 | pim_ifp->sec_addr_list->cmp = | |
180 | (int (*)(void *, void *))pim_sec_addr_comp; | |
181 | ||
414d885a DS |
182 | pim_ifp->activeactive = false; |
183 | ||
ad7b74c4 | 184 | RB_INIT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); |
d62a17ae | 185 | |
186 | ifp->info = pim_ifp; | |
187 | ||
188 | pim_sock_reset(ifp); | |
189 | ||
b1891fa0 | 190 | pim_if_add_vif(ifp, ispimreg, is_vxlan_term); |
ccf696e8 | 191 | pim_ifp->pim->mcast_if_count++; |
d62a17ae | 192 | |
193 | return pim_ifp; | |
12e41d03 DL |
194 | } |
195 | ||
196 | void pim_if_delete(struct interface *ifp) | |
197 | { | |
d62a17ae | 198 | struct pim_interface *pim_ifp; |
ad7b74c4 | 199 | struct pim_ifchannel *ch; |
12e41d03 | 200 | |
d62a17ae | 201 | zassert(ifp); |
202 | pim_ifp = ifp->info; | |
203 | zassert(pim_ifp); | |
12e41d03 | 204 | |
d62a17ae | 205 | if (pim_ifp->igmp_join_list) { |
206 | pim_if_igmp_join_del_all(ifp); | |
207 | } | |
12e41d03 | 208 | |
d62a17ae | 209 | pim_ifchannel_delete_all(ifp); |
210 | igmp_sock_delete_all(ifp); | |
12e41d03 | 211 | |
d62a17ae | 212 | pim_neighbor_delete_all(ifp, "Interface removed from configuration"); |
12e41d03 | 213 | |
d62a17ae | 214 | pim_if_del_vif(ifp); |
ccf696e8 | 215 | pim_ifp->pim->mcast_if_count--; |
12e41d03 | 216 | |
6a154c88 DL |
217 | list_delete(&pim_ifp->igmp_socket_list); |
218 | list_delete(&pim_ifp->pim_neighbor_list); | |
219 | list_delete(&pim_ifp->upstream_switch_list); | |
220 | list_delete(&pim_ifp->sec_addr_list); | |
12e41d03 | 221 | |
0a22ddfb | 222 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp->boundary_oil_plist); |
b0f525a8 | 223 | |
55cd0f61 DS |
224 | while (!RB_EMPTY(pim_ifchannel_rb, &pim_ifp->ifchannel_rb)) { |
225 | ch = RB_ROOT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); | |
226 | ||
ad7b74c4 | 227 | pim_ifchannel_delete(ch); |
55cd0f61 | 228 | } |
a625e937 | 229 | |
d62a17ae | 230 | XFREE(MTYPE_PIM_INTERFACE, pim_ifp); |
12e41d03 | 231 | |
d62a17ae | 232 | ifp->info = NULL; |
12e41d03 DL |
233 | } |
234 | ||
235 | void pim_if_update_could_assert(struct interface *ifp) | |
236 | { | |
d62a17ae | 237 | struct pim_interface *pim_ifp; |
d62a17ae | 238 | struct pim_ifchannel *ch; |
12e41d03 | 239 | |
d62a17ae | 240 | pim_ifp = ifp->info; |
241 | zassert(pim_ifp); | |
12e41d03 | 242 | |
a2addae8 | 243 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 244 | pim_ifchannel_update_could_assert(ch); |
245 | } | |
12e41d03 DL |
246 | } |
247 | ||
248 | static void pim_if_update_my_assert_metric(struct interface *ifp) | |
249 | { | |
d62a17ae | 250 | struct pim_interface *pim_ifp; |
d62a17ae | 251 | struct pim_ifchannel *ch; |
12e41d03 | 252 | |
d62a17ae | 253 | pim_ifp = ifp->info; |
254 | zassert(pim_ifp); | |
12e41d03 | 255 | |
a2addae8 | 256 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 257 | pim_ifchannel_update_my_assert_metric(ch); |
258 | } | |
12e41d03 DL |
259 | } |
260 | ||
261 | static void pim_addr_change(struct interface *ifp) | |
262 | { | |
d62a17ae | 263 | struct pim_interface *pim_ifp; |
264 | ||
265 | pim_ifp = ifp->info; | |
266 | zassert(pim_ifp); | |
267 | ||
268 | pim_if_dr_election(ifp); /* router's own DR Priority (addr) changes -- | |
269 | Done TODO T30 */ | |
270 | pim_if_update_join_desired(pim_ifp); /* depends on DR */ | |
271 | pim_if_update_could_assert(ifp); /* depends on DR */ | |
272 | pim_if_update_my_assert_metric(ifp); /* depends on could_assert */ | |
273 | pim_if_update_assert_tracking_desired( | |
274 | ifp); /* depends on DR, join_desired */ | |
275 | ||
276 | /* | |
277 | RFC 4601: 4.3.1. Sending Hello Messages | |
278 | ||
279 | 1) Before an interface goes down or changes primary IP address, a | |
280 | Hello message with a zero HoldTime should be sent immediately | |
281 | (with the old IP address if the IP address changed). | |
b279f95c | 282 | -- Done at the caller of the function as new ip already updated here |
d62a17ae | 283 | |
284 | 2) After an interface has changed its IP address, it MUST send a | |
285 | Hello message with its new IP address. | |
286 | -- DONE below | |
287 | ||
288 | 3) If an interface changes one of its secondary IP addresses, a | |
289 | Hello message with an updated Address_List option and a non-zero | |
290 | HoldTime should be sent immediately. | |
291 | -- FIXME See TODO T31 | |
292 | */ | |
293 | pim_ifp->pim_ifstat_hello_sent = 0; /* reset hello counter */ | |
294 | if (pim_ifp->pim_sock_fd < 0) | |
295 | return; | |
296 | pim_hello_restart_now(ifp); /* send hello and restart timer */ | |
12e41d03 DL |
297 | } |
298 | ||
12e41d03 DL |
299 | static int detect_primary_address_change(struct interface *ifp, |
300 | int force_prim_as_any, | |
301 | const char *caller) | |
302 | { | |
d62a17ae | 303 | struct pim_interface *pim_ifp = ifp->info; |
304 | struct in_addr new_prim_addr; | |
305 | int changed; | |
306 | ||
307 | if (force_prim_as_any) | |
308 | new_prim_addr.s_addr = INADDR_ANY; | |
309 | else | |
310 | new_prim_addr = pim_find_primary_addr(ifp); | |
311 | ||
312 | changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr; | |
313 | ||
314 | if (PIM_DEBUG_ZEBRA) { | |
315 | char new_prim_str[INET_ADDRSTRLEN]; | |
316 | char old_prim_str[INET_ADDRSTRLEN]; | |
317 | pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, | |
318 | sizeof(new_prim_str)); | |
319 | pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, | |
320 | sizeof(old_prim_str)); | |
15569c58 DA |
321 | zlog_debug("%s: old=%s new=%s on interface %s: %s", __func__, |
322 | old_prim_str, new_prim_str, ifp->name, | |
323 | changed ? "changed" : "unchanged"); | |
d62a17ae | 324 | } |
325 | ||
326 | if (changed) { | |
b279f95c | 327 | /* Before updating pim_ifp send Hello time with 0 hold time */ |
328 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
329 | pim_hello_send(ifp, 0 /* zero-sec holdtime */); | |
330 | } | |
d62a17ae | 331 | pim_ifp->primary_address = new_prim_addr; |
332 | } | |
333 | ||
334 | return changed; | |
12e41d03 DL |
335 | } |
336 | ||
7176984f | 337 | static struct pim_secondary_addr * |
294b6d72 | 338 | pim_sec_addr_find(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 339 | { |
d62a17ae | 340 | struct pim_secondary_addr *sec_addr; |
341 | struct listnode *node; | |
7176984f | 342 | |
d62a17ae | 343 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
ddba0a04 | 344 | if (prefix_cmp(&sec_addr->addr, addr) == 0) { |
d62a17ae | 345 | return sec_addr; |
346 | } | |
347 | } | |
7176984f | 348 | |
d62a17ae | 349 | return NULL; |
7176984f | 350 | } |
351 | ||
352 | static void pim_sec_addr_del(struct pim_interface *pim_ifp, | |
d62a17ae | 353 | struct pim_secondary_addr *sec_addr) |
7176984f | 354 | { |
d62a17ae | 355 | listnode_delete(pim_ifp->sec_addr_list, sec_addr); |
356 | pim_sec_addr_free(sec_addr); | |
7176984f | 357 | } |
358 | ||
294b6d72 | 359 | static int pim_sec_addr_add(struct pim_interface *pim_ifp, struct prefix *addr) |
7176984f | 360 | { |
d62a17ae | 361 | int changed = 0; |
362 | struct pim_secondary_addr *sec_addr; | |
363 | ||
364 | sec_addr = pim_sec_addr_find(pim_ifp, addr); | |
365 | if (sec_addr) { | |
366 | sec_addr->flags &= ~PIM_SEC_ADDRF_STALE; | |
367 | return changed; | |
368 | } | |
369 | ||
d62a17ae | 370 | sec_addr = XCALLOC(MTYPE_PIM_SEC_ADDR, sizeof(*sec_addr)); |
d62a17ae | 371 | |
372 | changed = 1; | |
373 | sec_addr->addr = *addr; | |
374 | listnode_add_sort(pim_ifp->sec_addr_list, sec_addr); | |
375 | ||
376 | return changed; | |
7176984f | 377 | } |
378 | ||
379 | static int pim_sec_addr_del_all(struct pim_interface *pim_ifp) | |
380 | { | |
d62a17ae | 381 | int changed = 0; |
382 | ||
d62a17ae | 383 | if (!list_isempty(pim_ifp->sec_addr_list)) { |
384 | changed = 1; | |
385 | /* remove all nodes and free up the list itself */ | |
386 | list_delete_all_node(pim_ifp->sec_addr_list); | |
d62a17ae | 387 | } |
388 | ||
389 | return changed; | |
7176984f | 390 | } |
391 | ||
392 | static int pim_sec_addr_update(struct interface *ifp) | |
393 | { | |
d62a17ae | 394 | struct pim_interface *pim_ifp = ifp->info; |
395 | struct connected *ifc; | |
396 | struct listnode *node; | |
397 | struct listnode *nextnode; | |
398 | struct pim_secondary_addr *sec_addr; | |
399 | int changed = 0; | |
400 | ||
996c9314 | 401 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
f09eaf1c | 402 | sec_addr->flags |= PIM_SEC_ADDRF_STALE; |
d62a17ae | 403 | } |
404 | ||
405 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
406 | struct prefix *p = ifc->address; | |
407 | ||
408 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
409 | continue; | |
410 | } | |
411 | ||
412 | if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) { | |
413 | /* don't add the primary address into the secondary | |
414 | * address list */ | |
415 | continue; | |
416 | } | |
417 | ||
418 | if (pim_sec_addr_add(pim_ifp, p)) { | |
419 | changed = 1; | |
420 | } | |
421 | } | |
422 | ||
f09eaf1c DS |
423 | /* Drop stale entries */ |
424 | for (ALL_LIST_ELEMENTS(pim_ifp->sec_addr_list, node, nextnode, | |
425 | sec_addr)) { | |
426 | if (sec_addr->flags & PIM_SEC_ADDRF_STALE) { | |
427 | pim_sec_addr_del(pim_ifp, sec_addr); | |
428 | changed = 1; | |
d62a17ae | 429 | } |
430 | } | |
431 | ||
432 | return changed; | |
7176984f | 433 | } |
434 | ||
4763cd0e | 435 | static int detect_secondary_address_change(struct interface *ifp, |
d62a17ae | 436 | int force_prim_as_any, |
437 | const char *caller) | |
12e41d03 | 438 | { |
d62a17ae | 439 | struct pim_interface *pim_ifp = ifp->info; |
440 | int changed = 0; | |
441 | ||
442 | if (force_prim_as_any) { | |
443 | /* if primary address is being forced to zero just flush the | |
444 | * secondary address list */ | |
445 | changed = pim_sec_addr_del_all(pim_ifp); | |
446 | } else { | |
447 | /* re-evaluate the secondary address list */ | |
448 | changed = pim_sec_addr_update(ifp); | |
449 | } | |
450 | ||
451 | return changed; | |
4763cd0e | 452 | } |
453 | ||
d62a17ae | 454 | static void detect_address_change(struct interface *ifp, int force_prim_as_any, |
455 | const char *caller) | |
4763cd0e | 456 | { |
d62a17ae | 457 | int changed = 0; |
458 | struct pim_interface *pim_ifp; | |
12e41d03 | 459 | |
d62a17ae | 460 | pim_ifp = ifp->info; |
461 | if (!pim_ifp) | |
462 | return; | |
4763cd0e | 463 | |
d62a17ae | 464 | if (detect_primary_address_change(ifp, force_prim_as_any, caller)) { |
465 | changed = 1; | |
466 | } | |
12e41d03 | 467 | |
d62a17ae | 468 | if (detect_secondary_address_change(ifp, force_prim_as_any, caller)) { |
469 | changed = 1; | |
470 | } | |
4763cd0e | 471 | |
472 | ||
d62a17ae | 473 | if (changed) { |
474 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
475 | return; | |
476 | } | |
4763cd0e | 477 | |
d62a17ae | 478 | pim_addr_change(ifp); |
479 | } | |
12e41d03 | 480 | |
d62a17ae | 481 | /* XXX: if we have unnumbered interfaces we need to run detect address |
482 | * address change on all of them when the lo address changes */ | |
12e41d03 DL |
483 | } |
484 | ||
4763cd0e | 485 | int pim_update_source_set(struct interface *ifp, struct in_addr source) |
12e41d03 | 486 | { |
d62a17ae | 487 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 488 | |
d62a17ae | 489 | if (!pim_ifp) { |
490 | return PIM_IFACE_NOT_FOUND; | |
491 | } | |
12e41d03 | 492 | |
d62a17ae | 493 | if (pim_ifp->update_source.s_addr == source.s_addr) { |
494 | return PIM_UPDATE_SOURCE_DUP; | |
495 | } | |
4763cd0e | 496 | |
d62a17ae | 497 | pim_ifp->update_source = source; |
15569c58 | 498 | detect_address_change(ifp, 0 /* force_prim_as_any */, __func__); |
4763cd0e | 499 | |
d62a17ae | 500 | return PIM_SUCCESS; |
12e41d03 DL |
501 | } |
502 | ||
503 | void pim_if_addr_add(struct connected *ifc) | |
504 | { | |
d62a17ae | 505 | struct pim_interface *pim_ifp; |
506 | struct interface *ifp; | |
507 | struct in_addr ifaddr; | |
650d9ad1 | 508 | bool vxlan_term; |
d62a17ae | 509 | |
510 | zassert(ifc); | |
511 | ||
512 | ifp = ifc->ifp; | |
513 | zassert(ifp); | |
514 | pim_ifp = ifp->info; | |
515 | if (!pim_ifp) | |
516 | return; | |
517 | ||
518 | if (!if_is_operative(ifp)) | |
519 | return; | |
520 | ||
521 | if (PIM_DEBUG_ZEBRA) { | |
522 | char buf[BUFSIZ]; | |
523 | prefix2str(ifc->address, buf, BUFSIZ); | |
524 | zlog_debug("%s: %s ifindex=%d connected IP address %s %s", | |
5e81f5dd | 525 | __func__, ifp->name, ifp->ifindex, buf, |
d62a17ae | 526 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) |
527 | ? "secondary" | |
528 | : "primary"); | |
529 | } | |
530 | ||
531 | ifaddr = ifc->address->u.prefix4; | |
532 | ||
5e81f5dd | 533 | detect_address_change(ifp, 0, __func__); |
d62a17ae | 534 | |
2002dcdb DS |
535 | // if (ifc->address->family != AF_INET) |
536 | // return; | |
d62a17ae | 537 | |
538 | if (PIM_IF_TEST_IGMP(pim_ifp->options)) { | |
539 | struct igmp_sock *igmp; | |
540 | ||
541 | /* lookup IGMP socket */ | |
542 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
543 | ifaddr); | |
544 | if (!igmp) { | |
545 | /* if addr new, add IGMP socket */ | |
c77a04e4 DS |
546 | if (ifc->address->family == AF_INET) |
547 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, | |
f83f3966 MS |
548 | ifaddr, ifp, false); |
549 | } else if (igmp->mtrace_only) { | |
550 | igmp_sock_delete(igmp); | |
551 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, | |
552 | ifp, false); | |
d62a17ae | 553 | } |
554 | ||
555 | /* Replay Static IGMP groups */ | |
556 | if (pim_ifp->igmp_join_list) { | |
557 | struct listnode *node; | |
558 | struct listnode *nextnode; | |
559 | struct igmp_join *ij; | |
560 | int join_fd; | |
561 | ||
562 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, | |
563 | nextnode, ij)) { | |
564 | /* Close socket and reopen with Source and Group | |
565 | */ | |
566 | close(ij->sock_fd); | |
567 | join_fd = igmp_join_sock( | |
568 | ifp->name, ifp->ifindex, ij->group_addr, | |
569 | ij->source_addr); | |
570 | if (join_fd < 0) { | |
571 | char group_str[INET_ADDRSTRLEN]; | |
572 | char source_str[INET_ADDRSTRLEN]; | |
573 | pim_inet4_dump("<grp?>", ij->group_addr, | |
574 | group_str, | |
575 | sizeof(group_str)); | |
576 | pim_inet4_dump( | |
577 | "<src?>", ij->source_addr, | |
578 | source_str, sizeof(source_str)); | |
579 | zlog_warn( | |
580 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
5e81f5dd DS |
581 | __func__, group_str, source_str, |
582 | ifp->name); | |
d62a17ae | 583 | /* warning only */ |
584 | } else | |
585 | ij->sock_fd = join_fd; | |
586 | } | |
587 | } | |
588 | } /* igmp */ | |
f83f3966 MS |
589 | else { |
590 | struct igmp_sock *igmp; | |
591 | ||
592 | /* lookup IGMP socket */ | |
593 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
594 | ifaddr); | |
595 | if (ifc->address->family == AF_INET) { | |
596 | if (igmp) | |
597 | igmp_sock_delete(igmp); | |
598 | /* if addr new, add IGMP socket */ | |
599 | pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, | |
600 | ifp, true); | |
601 | } | |
602 | } /* igmp mtrace only */ | |
d62a17ae | 603 | |
604 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
605 | ||
606 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
607 | ||
608 | /* Interface has a valid socket ? */ | |
609 | if (pim_ifp->pim_sock_fd < 0) { | |
610 | if (pim_sock_add(ifp)) { | |
611 | zlog_warn( | |
612 | "Failure creating PIM socket for interface %s", | |
613 | ifp->name); | |
614 | } | |
615 | } | |
616 | struct pim_nexthop_cache *pnc = NULL; | |
617 | struct pim_rpf rpf; | |
618 | struct zclient *zclient = NULL; | |
619 | ||
620 | zclient = pim_zebra_zclient_get(); | |
621 | /* RP config might come prior to (local RP's interface) | |
622 | IF UP event. | |
623 | In this case, pnc would not have pim enabled | |
624 | nexthops. | |
625 | Once Interface is UP and pim info is available, | |
626 | reregister | |
627 | with RNH address to receive update and add the | |
628 | interface as nexthop. */ | |
629 | memset(&rpf, 0, sizeof(struct pim_rpf)); | |
630 | rpf.rpf_addr.family = AF_INET; | |
631 | rpf.rpf_addr.prefixlen = IPV4_MAX_BITLEN; | |
632 | rpf.rpf_addr.u.prefix4 = ifc->address->u.prefix4; | |
d0a4f55d | 633 | pnc = pim_nexthop_cache_find(pim_ifp->pim, &rpf); |
d62a17ae | 634 | if (pnc) |
64c86530 | 635 | pim_sendmsg_zebra_rnh(pim_ifp->pim, zclient, |
cf663ceb | 636 | pnc, |
d62a17ae | 637 | ZEBRA_NEXTHOP_REGISTER); |
638 | } | |
639 | } /* pim */ | |
640 | ||
641 | /* | |
642 | PIM or IGMP is enabled on interface, and there is at least one | |
643 | address assigned, then try to create a vif_index. | |
644 | */ | |
645 | if (pim_ifp->mroute_vif_index < 0) { | |
650d9ad1 AK |
646 | vxlan_term = pim_vxlan_is_term_dev_cfg(pim_ifp->pim, ifp); |
647 | pim_if_add_vif(ifp, false, vxlan_term); | |
d62a17ae | 648 | } |
649 | pim_ifchannel_scan_forward_start(ifp); | |
12e41d03 DL |
650 | } |
651 | ||
652 | static void pim_if_addr_del_igmp(struct connected *ifc) | |
653 | { | |
d62a17ae | 654 | struct pim_interface *pim_ifp = ifc->ifp->info; |
655 | struct igmp_sock *igmp; | |
656 | struct in_addr ifaddr; | |
657 | ||
658 | if (ifc->address->family != AF_INET) { | |
659 | /* non-IPv4 address */ | |
660 | return; | |
661 | } | |
662 | ||
663 | if (!pim_ifp) { | |
664 | /* IGMP not enabled on interface */ | |
665 | return; | |
666 | } | |
667 | ||
668 | ifaddr = ifc->address->u.prefix4; | |
669 | ||
670 | /* lookup IGMP socket */ | |
671 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, ifaddr); | |
672 | if (igmp) { | |
673 | /* if addr found, del IGMP socket */ | |
674 | igmp_sock_delete(igmp); | |
675 | } | |
12e41d03 DL |
676 | } |
677 | ||
678 | static void pim_if_addr_del_pim(struct connected *ifc) | |
679 | { | |
d62a17ae | 680 | struct pim_interface *pim_ifp = ifc->ifp->info; |
12e41d03 | 681 | |
d62a17ae | 682 | if (ifc->address->family != AF_INET) { |
683 | /* non-IPv4 address */ | |
684 | return; | |
685 | } | |
12e41d03 | 686 | |
d62a17ae | 687 | if (!pim_ifp) { |
688 | /* PIM not enabled on interface */ | |
689 | return; | |
690 | } | |
691 | ||
692 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
693 | /* Interface keeps a valid primary address */ | |
694 | return; | |
695 | } | |
12e41d03 | 696 | |
d62a17ae | 697 | if (pim_ifp->pim_sock_fd < 0) { |
698 | /* Interface does not hold a valid socket any longer */ | |
699 | return; | |
700 | } | |
294b6d72 | 701 | |
d62a17ae | 702 | /* |
703 | pim_sock_delete() closes the socket, stops read and timer threads, | |
704 | and kills all neighbors. | |
705 | */ | |
706 | pim_sock_delete(ifc->ifp, | |
707 | "last address has been removed from interface"); | |
708 | } | |
12e41d03 | 709 | |
d62a17ae | 710 | void pim_if_addr_del(struct connected *ifc, int force_prim_as_any) |
711 | { | |
712 | struct interface *ifp; | |
713 | ||
714 | zassert(ifc); | |
715 | ifp = ifc->ifp; | |
716 | zassert(ifp); | |
717 | ||
d62a17ae | 718 | if (PIM_DEBUG_ZEBRA) { |
719 | char buf[BUFSIZ]; | |
720 | prefix2str(ifc->address, buf, BUFSIZ); | |
721 | zlog_debug("%s: %s ifindex=%d disconnected IP address %s %s", | |
15569c58 | 722 | __func__, ifp->name, ifp->ifindex, buf, |
d62a17ae | 723 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) |
724 | ? "secondary" | |
725 | : "primary"); | |
726 | } | |
12e41d03 | 727 | |
15569c58 | 728 | detect_address_change(ifp, force_prim_as_any, __func__); |
d62a17ae | 729 | |
730 | pim_if_addr_del_igmp(ifc); | |
731 | pim_if_addr_del_pim(ifc); | |
12e41d03 DL |
732 | } |
733 | ||
734 | void pim_if_addr_add_all(struct interface *ifp) | |
735 | { | |
d62a17ae | 736 | struct connected *ifc; |
737 | struct listnode *node; | |
738 | struct listnode *nextnode; | |
739 | int v4_addrs = 0; | |
740 | int v6_addrs = 0; | |
741 | struct pim_interface *pim_ifp = ifp->info; | |
650d9ad1 | 742 | bool vxlan_term; |
d62a17ae | 743 | |
744 | ||
745 | /* PIM/IGMP enabled ? */ | |
746 | if (!pim_ifp) | |
747 | return; | |
748 | ||
749 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
750 | struct prefix *p = ifc->address; | |
751 | ||
752 | if (p->family != AF_INET) | |
753 | v6_addrs++; | |
754 | else | |
755 | v4_addrs++; | |
756 | pim_if_addr_add(ifc); | |
757 | } | |
d8424057 | 758 | |
d62a17ae | 759 | if (!v4_addrs && v6_addrs && !if_is_loopback(ifp)) { |
760 | if (PIM_IF_TEST_PIM(pim_ifp->options)) { | |
761 | ||
762 | /* Interface has a valid primary address ? */ | |
763 | if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) { | |
764 | ||
765 | /* Interface has a valid socket ? */ | |
766 | if (pim_ifp->pim_sock_fd < 0) { | |
767 | if (pim_sock_add(ifp)) { | |
768 | zlog_warn( | |
769 | "Failure creating PIM socket for interface %s", | |
770 | ifp->name); | |
771 | } | |
772 | } | |
773 | } | |
774 | } /* pim */ | |
775 | } | |
776 | /* | |
777 | * PIM or IGMP is enabled on interface, and there is at least one | |
778 | * address assigned, then try to create a vif_index. | |
779 | */ | |
780 | if (pim_ifp->mroute_vif_index < 0) { | |
650d9ad1 AK |
781 | vxlan_term = pim_vxlan_is_term_dev_cfg(pim_ifp->pim, ifp); |
782 | pim_if_add_vif(ifp, false, vxlan_term); | |
d62a17ae | 783 | } |
784 | pim_ifchannel_scan_forward_start(ifp); | |
785 | ||
fec883d9 | 786 | pim_rp_setup(pim_ifp->pim); |
d62a17ae | 787 | pim_rp_check_on_if_add(pim_ifp); |
12e41d03 DL |
788 | } |
789 | ||
790 | void pim_if_addr_del_all(struct interface *ifp) | |
791 | { | |
d62a17ae | 792 | struct connected *ifc; |
793 | struct listnode *node; | |
794 | struct listnode *nextnode; | |
5ec5d976 | 795 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
819f099b DS |
796 | struct pim_instance *pim; |
797 | ||
798 | if (!vrf) | |
799 | return; | |
800 | pim = vrf->info; | |
d62a17ae | 801 | |
802 | /* PIM/IGMP enabled ? */ | |
803 | if (!ifp->info) | |
804 | return; | |
12e41d03 | 805 | |
d62a17ae | 806 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { |
807 | struct prefix *p = ifc->address; | |
12e41d03 | 808 | |
d62a17ae | 809 | if (p->family != AF_INET) |
810 | continue; | |
12e41d03 | 811 | |
d62a17ae | 812 | pim_if_addr_del(ifc, 1 /* force_prim_as_any=true */); |
813 | } | |
da3dcffb | 814 | |
5ec5d976 DS |
815 | pim_rp_setup(pim); |
816 | pim_i_am_rp_re_evaluate(pim); | |
12e41d03 DL |
817 | } |
818 | ||
819 | void pim_if_addr_del_all_igmp(struct interface *ifp) | |
820 | { | |
d62a17ae | 821 | struct connected *ifc; |
822 | struct listnode *node; | |
823 | struct listnode *nextnode; | |
824 | ||
825 | /* PIM/IGMP enabled ? */ | |
826 | if (!ifp->info) | |
827 | return; | |
828 | ||
829 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
830 | struct prefix *p = ifc->address; | |
831 | ||
832 | if (p->family != AF_INET) | |
833 | continue; | |
834 | ||
835 | pim_if_addr_del_igmp(ifc); | |
836 | } | |
12e41d03 DL |
837 | } |
838 | ||
839 | void pim_if_addr_del_all_pim(struct interface *ifp) | |
840 | { | |
d62a17ae | 841 | struct connected *ifc; |
842 | struct listnode *node; | |
843 | struct listnode *nextnode; | |
844 | ||
845 | /* PIM/IGMP enabled ? */ | |
846 | if (!ifp->info) | |
847 | return; | |
848 | ||
849 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nextnode, ifc)) { | |
850 | struct prefix *p = ifc->address; | |
851 | ||
852 | if (p->family != AF_INET) | |
853 | continue; | |
854 | ||
855 | pim_if_addr_del_pim(ifc); | |
856 | } | |
12e41d03 DL |
857 | } |
858 | ||
d62a17ae | 859 | struct in_addr pim_find_primary_addr(struct interface *ifp) |
12e41d03 | 860 | { |
d62a17ae | 861 | struct connected *ifc; |
862 | struct listnode *node; | |
819f099b | 863 | struct in_addr addr = {0}; |
d62a17ae | 864 | int v4_addrs = 0; |
865 | int v6_addrs = 0; | |
866 | struct pim_interface *pim_ifp = ifp->info; | |
896b2044 | 867 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
d62a17ae | 868 | |
819f099b DS |
869 | if (!vrf) |
870 | return addr; | |
871 | ||
d62a17ae | 872 | if (pim_ifp && PIM_INADDR_ISNOT_ANY(pim_ifp->update_source)) { |
873 | return pim_ifp->update_source; | |
874 | } | |
875 | ||
876 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
877 | struct prefix *p = ifc->address; | |
878 | ||
879 | if (p->family != AF_INET) { | |
880 | v6_addrs++; | |
881 | continue; | |
882 | } | |
883 | ||
884 | if (PIM_INADDR_IS_ANY(p->u.prefix4)) { | |
885 | zlog_warn( | |
886 | "%s: null IPv4 address connected to interface %s", | |
5e81f5dd | 887 | __func__, ifp->name); |
d62a17ae | 888 | continue; |
889 | } | |
890 | ||
891 | v4_addrs++; | |
892 | ||
893 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) | |
894 | continue; | |
895 | ||
896 | return p->u.prefix4; | |
897 | } | |
898 | ||
899 | /* | |
900 | * If we have no v4_addrs and v6 is configured | |
901 | * We probably are using unnumbered | |
902 | * So let's grab the loopbacks v4 address | |
903 | * and use that as the primary address | |
904 | */ | |
2430f057 | 905 | if (!v4_addrs && v6_addrs) { |
d62a17ae | 906 | struct interface *lo_ifp; |
2430f057 | 907 | |
fec883d9 | 908 | // DBS - Come back and check here |
896b2044 DS |
909 | if (ifp->vrf_id == VRF_DEFAULT) |
910 | lo_ifp = if_lookup_by_name("lo", vrf->vrf_id); | |
911 | else | |
912 | lo_ifp = if_lookup_by_name(vrf->name, vrf->vrf_id); | |
913 | ||
2430f057 | 914 | if (lo_ifp && (lo_ifp != ifp)) |
d62a17ae | 915 | return pim_find_primary_addr(lo_ifp); |
916 | } | |
917 | ||
918 | addr.s_addr = PIM_NET_INADDR_ANY; | |
919 | ||
920 | return addr; | |
12e41d03 DL |
921 | } |
922 | ||
d62a17ae | 923 | static int pim_iface_next_vif_index(struct interface *ifp) |
744d91b3 | 924 | { |
f88df3a6 DS |
925 | struct pim_interface *pim_ifp = ifp->info; |
926 | struct pim_instance *pim = pim_ifp->pim; | |
d62a17ae | 927 | int i; |
f88df3a6 | 928 | |
d62a17ae | 929 | /* |
930 | * The pimreg vif is always going to be in index 0 | |
931 | * of the table. | |
932 | */ | |
933 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
934 | return 0; | |
935 | ||
936 | for (i = 1; i < MAXVIFS; i++) { | |
f88df3a6 | 937 | if (pim->iface_vif_index[i] == 0) |
d62a17ae | 938 | return i; |
939 | } | |
940 | return MAXVIFS; | |
744d91b3 DS |
941 | } |
942 | ||
12e41d03 DL |
943 | /* |
944 | pim_if_add_vif() uses ifindex as vif_index | |
945 | ||
946 | see also pim_if_find_vifindex_by_ifindex() | |
947 | */ | |
b1891fa0 | 948 | int pim_if_add_vif(struct interface *ifp, bool ispimreg, bool is_vxlan_term) |
12e41d03 | 949 | { |
d62a17ae | 950 | struct pim_interface *pim_ifp = ifp->info; |
951 | struct in_addr ifaddr; | |
952 | unsigned char flags = 0; | |
953 | ||
954 | zassert(pim_ifp); | |
955 | ||
956 | if (pim_ifp->mroute_vif_index > 0) { | |
957 | zlog_warn("%s: vif_index=%d > 0 on interface %s ifindex=%d", | |
15569c58 DA |
958 | __func__, pim_ifp->mroute_vif_index, ifp->name, |
959 | ifp->ifindex); | |
d62a17ae | 960 | return -1; |
961 | } | |
962 | ||
963 | if (ifp->ifindex < 0) { | |
15569c58 DA |
964 | zlog_warn("%s: ifindex=%d < 1 on interface %s", __func__, |
965 | ifp->ifindex, ifp->name); | |
d62a17ae | 966 | return -2; |
967 | } | |
968 | ||
969 | ifaddr = pim_ifp->primary_address; | |
b1891fa0 | 970 | if (!ispimreg && !is_vxlan_term && PIM_INADDR_IS_ANY(ifaddr)) { |
d62a17ae | 971 | zlog_warn( |
972 | "%s: could not get address for interface %s ifindex=%d", | |
15569c58 | 973 | __func__, ifp->name, ifp->ifindex); |
d62a17ae | 974 | return -4; |
975 | } | |
976 | ||
977 | pim_ifp->mroute_vif_index = pim_iface_next_vif_index(ifp); | |
978 | ||
979 | if (pim_ifp->mroute_vif_index >= MAXVIFS) { | |
980 | zlog_warn( | |
981 | "%s: Attempting to configure more than MAXVIFS=%d on pim enabled interface %s", | |
15569c58 | 982 | __func__, MAXVIFS, ifp->name); |
d62a17ae | 983 | return -3; |
984 | } | |
985 | ||
986 | if (ifp->ifindex == PIM_OIF_PIM_REGISTER_VIF) | |
987 | flags = VIFF_REGISTER; | |
b3f2bf7c | 988 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 989 | else |
990 | flags = VIFF_USE_IFINDEX; | |
b3f2bf7c RW |
991 | #endif |
992 | ||
d62a17ae | 993 | if (pim_mroute_add_vif(ifp, ifaddr, flags)) { |
994 | /* pim_mroute_add_vif reported error */ | |
995 | return -5; | |
996 | } | |
12e41d03 | 997 | |
f88df3a6 | 998 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 1; |
269c1fe1 AK |
999 | |
1000 | /* if the device qualifies as pim_vxlan iif/oif update vxlan entries */ | |
1001 | pim_vxlan_add_vif(ifp); | |
1002 | ||
d62a17ae | 1003 | return 0; |
12e41d03 DL |
1004 | } |
1005 | ||
12e41d03 DL |
1006 | int pim_if_del_vif(struct interface *ifp) |
1007 | { | |
d62a17ae | 1008 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 | 1009 | |
d62a17ae | 1010 | if (pim_ifp->mroute_vif_index < 1) { |
1011 | zlog_warn("%s: vif_index=%d < 1 on interface %s ifindex=%d", | |
15569c58 DA |
1012 | __func__, pim_ifp->mroute_vif_index, ifp->name, |
1013 | ifp->ifindex); | |
d62a17ae | 1014 | return -1; |
1015 | } | |
12e41d03 | 1016 | |
269c1fe1 AK |
1017 | /* if the device was a pim_vxlan iif/oif update vxlan mroute entries */ |
1018 | pim_vxlan_del_vif(ifp); | |
1019 | ||
ea3d967b | 1020 | pim_mroute_del_vif(ifp); |
12e41d03 | 1021 | |
d62a17ae | 1022 | /* |
1023 | Update vif_index | |
1024 | */ | |
f88df3a6 | 1025 | pim_ifp->pim->iface_vif_index[pim_ifp->mroute_vif_index] = 0; |
12e41d03 | 1026 | |
d62a17ae | 1027 | pim_ifp->mroute_vif_index = -1; |
12e41d03 | 1028 | |
d62a17ae | 1029 | return 0; |
12e41d03 DL |
1030 | } |
1031 | ||
da82728d | 1032 | // DBS - VRF Revist |
7cfc7bcf DS |
1033 | struct interface *pim_if_find_by_vif_index(struct pim_instance *pim, |
1034 | ifindex_t vif_index) | |
12e41d03 | 1035 | { |
d62a17ae | 1036 | struct interface *ifp; |
12e41d03 | 1037 | |
451fda4f | 1038 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
7cfc7bcf DS |
1039 | if (ifp->info) { |
1040 | struct pim_interface *pim_ifp; | |
1041 | pim_ifp = ifp->info; | |
b892f1dd | 1042 | |
7cfc7bcf DS |
1043 | if (vif_index == pim_ifp->mroute_vif_index) |
1044 | return ifp; | |
d62a17ae | 1045 | } |
1046 | } | |
12e41d03 | 1047 | |
d62a17ae | 1048 | return 0; |
12e41d03 DL |
1049 | } |
1050 | ||
1051 | /* | |
1052 | pim_if_add_vif() uses ifindex as vif_index | |
1053 | */ | |
7cfc7bcf | 1054 | int pim_if_find_vifindex_by_ifindex(struct pim_instance *pim, ifindex_t ifindex) |
12e41d03 | 1055 | { |
d62a17ae | 1056 | struct pim_interface *pim_ifp; |
1057 | struct interface *ifp; | |
ae90dfbb | 1058 | |
7cfc7bcf | 1059 | ifp = if_lookup_by_index(ifindex, pim->vrf_id); |
d62a17ae | 1060 | if (!ifp || !ifp->info) |
1061 | return -1; | |
1062 | pim_ifp = ifp->info; | |
ae90dfbb | 1063 | |
d62a17ae | 1064 | return pim_ifp->mroute_vif_index; |
12e41d03 DL |
1065 | } |
1066 | ||
1067 | int pim_if_lan_delay_enabled(struct interface *ifp) | |
1068 | { | |
d62a17ae | 1069 | struct pim_interface *pim_ifp; |
12e41d03 | 1070 | |
d62a17ae | 1071 | pim_ifp = ifp->info; |
1072 | zassert(pim_ifp); | |
1073 | zassert(pim_ifp->pim_number_of_nonlandelay_neighbors >= 0); | |
12e41d03 | 1074 | |
d62a17ae | 1075 | return pim_ifp->pim_number_of_nonlandelay_neighbors == 0; |
12e41d03 DL |
1076 | } |
1077 | ||
1078 | uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp) | |
1079 | { | |
d62a17ae | 1080 | if (pim_if_lan_delay_enabled(ifp)) { |
1081 | struct pim_interface *pim_ifp; | |
1082 | pim_ifp = ifp->info; | |
1083 | return pim_ifp->pim_neighbors_highest_propagation_delay_msec; | |
1084 | } else { | |
1085 | return PIM_DEFAULT_PROPAGATION_DELAY_MSEC; | |
1086 | } | |
12e41d03 DL |
1087 | } |
1088 | ||
1089 | uint16_t pim_if_effective_override_interval_msec(struct interface *ifp) | |
1090 | { | |
d62a17ae | 1091 | if (pim_if_lan_delay_enabled(ifp)) { |
1092 | struct pim_interface *pim_ifp; | |
1093 | pim_ifp = ifp->info; | |
1094 | return pim_ifp->pim_neighbors_highest_override_interval_msec; | |
1095 | } else { | |
1096 | return PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC; | |
1097 | } | |
12e41d03 DL |
1098 | } |
1099 | ||
1100 | int pim_if_t_override_msec(struct interface *ifp) | |
1101 | { | |
d62a17ae | 1102 | int effective_override_interval_msec; |
1103 | int t_override_msec; | |
12e41d03 | 1104 | |
d62a17ae | 1105 | effective_override_interval_msec = |
1106 | pim_if_effective_override_interval_msec(ifp); | |
12e41d03 | 1107 | |
5920b3eb RZ |
1108 | t_override_msec = |
1109 | frr_weak_random() % (effective_override_interval_msec + 1); | |
12e41d03 | 1110 | |
d62a17ae | 1111 | return t_override_msec; |
12e41d03 DL |
1112 | } |
1113 | ||
1114 | uint16_t pim_if_jp_override_interval_msec(struct interface *ifp) | |
1115 | { | |
d62a17ae | 1116 | return pim_if_effective_propagation_delay_msec(ifp) |
1117 | + pim_if_effective_override_interval_msec(ifp); | |
12e41d03 DL |
1118 | } |
1119 | ||
1120 | /* | |
1121 | RFC 4601: 4.1.6. State Summarization Macros | |
1122 | ||
1123 | The function NBR( I, A ) uses information gathered through PIM Hello | |
1124 | messages to map the IP address A of a directly connected PIM | |
1125 | neighbor router on interface I to the primary IP address of the same | |
1126 | router (Section 4.3.4). The primary IP address of a neighbor is the | |
1127 | address that it uses as the source of its PIM Hello messages. | |
1128 | */ | |
1129 | struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, | |
1130 | struct in_addr addr) | |
1131 | { | |
d62a17ae | 1132 | struct listnode *neighnode; |
1133 | struct pim_neighbor *neigh; | |
1134 | struct pim_interface *pim_ifp; | |
1135 | struct prefix p; | |
1136 | ||
1137 | zassert(ifp); | |
1138 | ||
1139 | pim_ifp = ifp->info; | |
1140 | if (!pim_ifp) { | |
5e81f5dd DS |
1141 | zlog_warn("%s: multicast not enabled on interface %s", __func__, |
1142 | ifp->name); | |
d62a17ae | 1143 | return 0; |
1144 | } | |
1145 | ||
1146 | p.family = AF_INET; | |
1147 | p.u.prefix4 = addr; | |
1148 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
1149 | ||
1150 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, | |
1151 | neigh)) { | |
1152 | ||
1153 | /* primary address ? */ | |
1154 | if (neigh->source_addr.s_addr == addr.s_addr) | |
1155 | return neigh; | |
1156 | ||
1157 | /* secondary address ? */ | |
1158 | if (pim_neighbor_find_secondary(neigh, &p)) | |
1159 | return neigh; | |
1160 | } | |
1161 | ||
1162 | if (PIM_DEBUG_PIM_TRACE) { | |
1163 | char addr_str[INET_ADDRSTRLEN]; | |
1164 | pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str)); | |
1165 | zlog_debug( | |
1166 | "%s: neighbor not found for address %s on interface %s", | |
5e81f5dd | 1167 | __func__, addr_str, ifp->name); |
d62a17ae | 1168 | } |
1169 | ||
1170 | return NULL; | |
12e41d03 DL |
1171 | } |
1172 | ||
1173 | long pim_if_t_suppressed_msec(struct interface *ifp) | |
1174 | { | |
d62a17ae | 1175 | struct pim_interface *pim_ifp; |
1176 | long t_suppressed_msec; | |
1177 | uint32_t ramount = 0; | |
12e41d03 | 1178 | |
d62a17ae | 1179 | pim_ifp = ifp->info; |
1180 | zassert(pim_ifp); | |
12e41d03 | 1181 | |
d62a17ae | 1182 | /* join suppression disabled ? */ |
1183 | if (PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)) | |
1184 | return 0; | |
12e41d03 | 1185 | |
d62a17ae | 1186 | /* t_suppressed = t_periodic * rand(1.1, 1.4) */ |
5920b3eb | 1187 | ramount = 1100 + (frr_weak_random() % (1400 - 1100 + 1)); |
5b45753e | 1188 | t_suppressed_msec = router->t_periodic * ramount; |
12e41d03 | 1189 | |
d62a17ae | 1190 | return t_suppressed_msec; |
12e41d03 DL |
1191 | } |
1192 | ||
1193 | static void igmp_join_free(struct igmp_join *ij) | |
1194 | { | |
d62a17ae | 1195 | XFREE(MTYPE_PIM_IGMP_JOIN, ij); |
12e41d03 DL |
1196 | } |
1197 | ||
1198 | static struct igmp_join *igmp_join_find(struct list *join_list, | |
1199 | struct in_addr group_addr, | |
1200 | struct in_addr source_addr) | |
1201 | { | |
d62a17ae | 1202 | struct listnode *node; |
1203 | struct igmp_join *ij; | |
12e41d03 | 1204 | |
d62a17ae | 1205 | zassert(join_list); |
12e41d03 | 1206 | |
d62a17ae | 1207 | for (ALL_LIST_ELEMENTS_RO(join_list, node, ij)) { |
1208 | if ((group_addr.s_addr == ij->group_addr.s_addr) | |
1209 | && (source_addr.s_addr == ij->source_addr.s_addr)) | |
1210 | return ij; | |
1211 | } | |
12e41d03 | 1212 | |
d62a17ae | 1213 | return 0; |
12e41d03 DL |
1214 | } |
1215 | ||
d62a17ae | 1216 | static int igmp_join_sock(const char *ifname, ifindex_t ifindex, |
1217 | struct in_addr group_addr, struct in_addr source_addr) | |
12e41d03 | 1218 | { |
d62a17ae | 1219 | int join_fd; |
12e41d03 | 1220 | |
d62a17ae | 1221 | join_fd = pim_socket_raw(IPPROTO_IGMP); |
1222 | if (join_fd < 0) { | |
1223 | return -1; | |
1224 | } | |
12e41d03 | 1225 | |
c936e76f DS |
1226 | if (pim_igmp_join_source(join_fd, ifindex, group_addr, source_addr)) { |
1227 | char group_str[INET_ADDRSTRLEN]; | |
1228 | char source_str[INET_ADDRSTRLEN]; | |
1229 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1230 | sizeof(group_str)); | |
1231 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1232 | sizeof(source_str)); | |
1233 | zlog_warn( | |
1234 | "%s: setsockopt(fd=%d) failure for IGMP group %s source %s ifindex %d on interface %s: errno=%d: %s", | |
15569c58 DA |
1235 | __func__, join_fd, group_str, source_str, ifindex, |
1236 | ifname, errno, safe_strerror(errno)); | |
c936e76f | 1237 | |
d62a17ae | 1238 | close(join_fd); |
1239 | return -2; | |
1240 | } | |
12e41d03 | 1241 | |
d62a17ae | 1242 | return join_fd; |
12e41d03 DL |
1243 | } |
1244 | ||
1245 | static struct igmp_join *igmp_join_new(struct interface *ifp, | |
1246 | struct in_addr group_addr, | |
1247 | struct in_addr source_addr) | |
1248 | { | |
d62a17ae | 1249 | struct pim_interface *pim_ifp; |
1250 | struct igmp_join *ij; | |
1251 | int join_fd; | |
1252 | ||
1253 | pim_ifp = ifp->info; | |
1254 | zassert(pim_ifp); | |
1255 | ||
1256 | join_fd = igmp_join_sock(ifp->name, ifp->ifindex, group_addr, | |
1257 | source_addr); | |
1258 | if (join_fd < 0) { | |
1259 | char group_str[INET_ADDRSTRLEN]; | |
1260 | char source_str[INET_ADDRSTRLEN]; | |
c936e76f | 1261 | |
d62a17ae | 1262 | pim_inet4_dump("<grp?>", group_addr, group_str, |
1263 | sizeof(group_str)); | |
1264 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1265 | sizeof(source_str)); | |
1266 | zlog_warn( | |
1267 | "%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s", | |
15569c58 | 1268 | __func__, group_str, source_str, ifp->name); |
d62a17ae | 1269 | return 0; |
1270 | } | |
1271 | ||
1272 | ij = XCALLOC(MTYPE_PIM_IGMP_JOIN, sizeof(*ij)); | |
d62a17ae | 1273 | |
1274 | ij->sock_fd = join_fd; | |
1275 | ij->group_addr = group_addr; | |
1276 | ij->source_addr = source_addr; | |
1277 | ij->sock_creation = pim_time_monotonic_sec(); | |
1278 | ||
1279 | listnode_add(pim_ifp->igmp_join_list, ij); | |
1280 | ||
1281 | return ij; | |
12e41d03 DL |
1282 | } |
1283 | ||
37664928 | 1284 | ferr_r pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr, |
996c9314 | 1285 | struct in_addr source_addr) |
12e41d03 | 1286 | { |
d62a17ae | 1287 | struct pim_interface *pim_ifp; |
1288 | struct igmp_join *ij; | |
1289 | ||
1290 | pim_ifp = ifp->info; | |
1291 | if (!pim_ifp) { | |
37664928 DS |
1292 | return ferr_cfg_invalid("multicast not enabled on interface %s", |
1293 | ifp->name); | |
d62a17ae | 1294 | } |
1295 | ||
1296 | if (!pim_ifp->igmp_join_list) { | |
1297 | pim_ifp->igmp_join_list = list_new(); | |
d62a17ae | 1298 | pim_ifp->igmp_join_list->del = (void (*)(void *))igmp_join_free; |
1299 | } | |
1300 | ||
1301 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
53d829f5 DW |
1302 | |
1303 | /* This interface has already been configured to join this IGMP group | |
1304 | */ | |
d62a17ae | 1305 | if (ij) { |
53d829f5 | 1306 | return ferr_ok(); |
d62a17ae | 1307 | } |
1308 | ||
11884868 | 1309 | (void)igmp_join_new(ifp, group_addr, source_addr); |
d62a17ae | 1310 | |
1311 | if (PIM_DEBUG_IGMP_EVENTS) { | |
1312 | char group_str[INET_ADDRSTRLEN]; | |
1313 | char source_str[INET_ADDRSTRLEN]; | |
1314 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1315 | sizeof(group_str)); | |
1316 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1317 | sizeof(source_str)); | |
1318 | zlog_debug( | |
1319 | "%s: issued static igmp join for channel (S,G)=(%s,%s) on interface %s", | |
15569c58 | 1320 | __func__, source_str, group_str, ifp->name); |
d62a17ae | 1321 | } |
12e41d03 | 1322 | |
37664928 | 1323 | return ferr_ok(); |
d62a17ae | 1324 | } |
12e41d03 DL |
1325 | |
1326 | ||
d62a17ae | 1327 | int pim_if_igmp_join_del(struct interface *ifp, struct in_addr group_addr, |
12e41d03 DL |
1328 | struct in_addr source_addr) |
1329 | { | |
d62a17ae | 1330 | struct pim_interface *pim_ifp; |
1331 | struct igmp_join *ij; | |
1332 | ||
1333 | pim_ifp = ifp->info; | |
1334 | if (!pim_ifp) { | |
15569c58 DA |
1335 | zlog_warn("%s: multicast not enabled on interface %s", __func__, |
1336 | ifp->name); | |
d62a17ae | 1337 | return -1; |
1338 | } | |
1339 | ||
1340 | if (!pim_ifp->igmp_join_list) { | |
15569c58 DA |
1341 | zlog_warn("%s: no IGMP join on interface %s", __func__, |
1342 | ifp->name); | |
d62a17ae | 1343 | return -2; |
1344 | } | |
1345 | ||
1346 | ij = igmp_join_find(pim_ifp->igmp_join_list, group_addr, source_addr); | |
1347 | if (!ij) { | |
1348 | char group_str[INET_ADDRSTRLEN]; | |
1349 | char source_str[INET_ADDRSTRLEN]; | |
1350 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1351 | sizeof(group_str)); | |
1352 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1353 | sizeof(source_str)); | |
1354 | zlog_warn( | |
1355 | "%s: could not find IGMP group %s source %s on interface %s", | |
15569c58 | 1356 | __func__, group_str, source_str, ifp->name); |
d62a17ae | 1357 | return -3; |
1358 | } | |
1359 | ||
1360 | if (close(ij->sock_fd)) { | |
1361 | char group_str[INET_ADDRSTRLEN]; | |
1362 | char source_str[INET_ADDRSTRLEN]; | |
1363 | pim_inet4_dump("<grp?>", group_addr, group_str, | |
1364 | sizeof(group_str)); | |
1365 | pim_inet4_dump("<src?>", source_addr, source_str, | |
1366 | sizeof(source_str)); | |
1367 | zlog_warn( | |
1368 | "%s: failure closing sock_fd=%d for IGMP group %s source %s on interface %s: errno=%d: %s", | |
15569c58 DA |
1369 | __func__, ij->sock_fd, group_str, source_str, ifp->name, |
1370 | errno, safe_strerror(errno)); | |
d62a17ae | 1371 | /* warning only */ |
1372 | } | |
1373 | listnode_delete(pim_ifp->igmp_join_list, ij); | |
1374 | igmp_join_free(ij); | |
1375 | if (listcount(pim_ifp->igmp_join_list) < 1) { | |
6a154c88 | 1376 | list_delete(&pim_ifp->igmp_join_list); |
d62a17ae | 1377 | pim_ifp->igmp_join_list = 0; |
1378 | } | |
1379 | ||
1380 | return 0; | |
12e41d03 DL |
1381 | } |
1382 | ||
1383 | static void pim_if_igmp_join_del_all(struct interface *ifp) | |
1384 | { | |
d62a17ae | 1385 | struct pim_interface *pim_ifp; |
1386 | struct listnode *node; | |
1387 | struct listnode *nextnode; | |
1388 | struct igmp_join *ij; | |
1389 | ||
1390 | pim_ifp = ifp->info; | |
1391 | if (!pim_ifp) { | |
5e81f5dd DS |
1392 | zlog_warn("%s: multicast not enabled on interface %s", __func__, |
1393 | ifp->name); | |
d62a17ae | 1394 | return; |
1395 | } | |
1396 | ||
1397 | if (!pim_ifp->igmp_join_list) | |
1398 | return; | |
1399 | ||
1400 | for (ALL_LIST_ELEMENTS(pim_ifp->igmp_join_list, node, nextnode, ij)) | |
1401 | pim_if_igmp_join_del(ifp, ij->group_addr, ij->source_addr); | |
12e41d03 DL |
1402 | } |
1403 | ||
1404 | /* | |
1405 | RFC 4601 | |
1406 | ||
1407 | Transitions from "I am Assert Loser" State | |
1408 | ||
1409 | Current Winner's GenID Changes or NLT Expires | |
1410 | ||
1411 | The Neighbor Liveness Timer associated with the current winner | |
1412 | expires or we receive a Hello message from the current winner | |
1413 | reporting a different GenID from the one it previously reported. | |
1414 | This indicates that the current winner's interface or router has | |
1415 | gone down (and may have come back up), and so we must assume it no | |
1416 | longer knows it was the winner. | |
1417 | */ | |
1418 | void pim_if_assert_on_neighbor_down(struct interface *ifp, | |
1419 | struct in_addr neigh_addr) | |
1420 | { | |
d62a17ae | 1421 | struct pim_interface *pim_ifp; |
d62a17ae | 1422 | struct pim_ifchannel *ch; |
1423 | ||
1424 | pim_ifp = ifp->info; | |
1425 | zassert(pim_ifp); | |
1426 | ||
a2addae8 | 1427 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1428 | /* Is (S,G,I) assert loser ? */ |
1429 | if (ch->ifassert_state != PIM_IFASSERT_I_AM_LOSER) | |
1430 | continue; | |
1431 | /* Dead neighbor was winner ? */ | |
1432 | if (ch->ifassert_winner.s_addr != neigh_addr.s_addr) | |
1433 | continue; | |
1434 | ||
1435 | assert_action_a5(ch); | |
1436 | } | |
12e41d03 DL |
1437 | } |
1438 | ||
1439 | void pim_if_update_join_desired(struct pim_interface *pim_ifp) | |
1440 | { | |
d62a17ae | 1441 | struct pim_ifchannel *ch; |
12e41d03 | 1442 | |
d62a17ae | 1443 | /* clear off flag from interface's upstreams */ |
a2addae8 | 1444 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1445 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED( |
1446 | ch->upstream->flags); | |
1447 | } | |
12e41d03 | 1448 | |
d62a17ae | 1449 | /* scan per-interface (S,G,I) state on this I interface */ |
a2addae8 | 1450 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1451 | struct pim_upstream *up = ch->upstream; |
12e41d03 | 1452 | |
d62a17ae | 1453 | if (PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(up->flags)) |
1454 | continue; | |
12e41d03 | 1455 | |
d62a17ae | 1456 | /* update join_desired for the global (S,G) state */ |
9b29ea95 | 1457 | pim_upstream_update_join_desired(pim_ifp->pim, up); |
d62a17ae | 1458 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(up->flags); |
1459 | } | |
12e41d03 DL |
1460 | } |
1461 | ||
1462 | void pim_if_update_assert_tracking_desired(struct interface *ifp) | |
1463 | { | |
d62a17ae | 1464 | struct pim_interface *pim_ifp; |
d62a17ae | 1465 | struct pim_ifchannel *ch; |
1466 | ||
1467 | pim_ifp = ifp->info; | |
1468 | if (!pim_ifp) | |
1469 | return; | |
1470 | ||
a2addae8 | 1471 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 1472 | pim_ifchannel_update_assert_tracking_desired(ch); |
1473 | } | |
12e41d03 | 1474 | } |
c992c9a0 DS |
1475 | |
1476 | /* | |
1477 | * PIM wants to have an interface pointer for everything it does. | |
1478 | * The pimreg is a special interface that we have that is not | |
1479 | * quite an inteface but a VIF is created for it. | |
1480 | */ | |
43e40fdf | 1481 | void pim_if_create_pimreg(struct pim_instance *pim) |
c992c9a0 | 1482 | { |
bcc24579 | 1483 | char pimreg_name[INTERFACE_NAMSIZ]; |
c992c9a0 | 1484 | |
43e40fdf | 1485 | if (!pim->regiface) { |
afa2b179 | 1486 | if (pim->vrf_id == VRF_DEFAULT) |
bcc24579 | 1487 | strlcpy(pimreg_name, "pimreg", sizeof(pimreg_name)); |
afa2b179 | 1488 | else |
bcc24579 RW |
1489 | snprintf(pimreg_name, sizeof(pimreg_name), "pimreg%u", |
1490 | pim->vrf->data.l.table_id); | |
afa2b179 | 1491 | |
d5c65bf1 | 1492 | pim->regiface = if_create_name(pimreg_name, pim->vrf_id); |
43e40fdf DS |
1493 | pim->regiface->ifindex = PIM_OIF_PIM_REGISTER_VIF; |
1494 | ||
b1891fa0 AK |
1495 | pim_if_new(pim->regiface, false, false, true, |
1496 | false /*vxlan_term*/); | |
85d25587 DS |
1497 | /* |
1498 | * On vrf moves we delete the interface if there | |
1499 | * is nothing going on with it. We cannot have | |
1500 | * the pimregiface deleted. | |
1501 | */ | |
1502 | pim->regiface->configured = true; | |
1503 | ||
d62a17ae | 1504 | } |
c992c9a0 | 1505 | } |
3565202d | 1506 | |
efe6f185 | 1507 | struct prefix *pim_if_connected_to_source(struct interface *ifp, struct in_addr src) |
3565202d | 1508 | { |
d62a17ae | 1509 | struct listnode *cnode; |
1510 | struct connected *c; | |
1511 | struct prefix p; | |
1512 | ||
1513 | if (!ifp) | |
efe6f185 | 1514 | return NULL; |
d62a17ae | 1515 | |
1516 | p.family = AF_INET; | |
1517 | p.u.prefix4 = src; | |
1518 | p.prefixlen = IPV4_MAX_BITLEN; | |
1519 | ||
1520 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
1521 | if ((c->address->family == AF_INET) | |
1522 | && prefix_match(CONNECTED_PREFIX(c), &p)) { | |
efe6f185 | 1523 | return CONNECTED_PREFIX(c); |
d62a17ae | 1524 | } |
1525 | } | |
1526 | ||
efe6f185 | 1527 | return NULL; |
3565202d | 1528 | } |
11699c47 | 1529 | |
e55a43d4 | 1530 | bool pim_if_is_vrf_device(struct interface *ifp) |
90133de6 | 1531 | { |
e55a43d4 DS |
1532 | if (if_is_vrf(ifp)) |
1533 | return true; | |
90133de6 | 1534 | |
e55a43d4 | 1535 | return false; |
90133de6 | 1536 | } |
ad7b74c4 DS |
1537 | |
1538 | int pim_if_ifchannel_count(struct pim_interface *pim_ifp) | |
1539 | { | |
1540 | struct pim_ifchannel *ch; | |
1541 | int count = 0; | |
1542 | ||
a2addae8 | 1543 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
ad7b74c4 DS |
1544 | count++; |
1545 | } | |
1546 | ||
1547 | return count; | |
1548 | } | |
138c5a74 DS |
1549 | |
1550 | int pim_ifp_create(struct interface *ifp) | |
1551 | { | |
ef7bd2a3 DS |
1552 | struct pim_instance *pim; |
1553 | ||
1554 | pim = pim_get_pim_instance(ifp->vrf_id); | |
1555 | if (PIM_DEBUG_ZEBRA) { | |
1556 | zlog_debug( | |
1557 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1558 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1559 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
ef7bd2a3 DS |
1560 | if_is_operative(ifp)); |
1561 | } | |
1562 | ||
1563 | if (if_is_operative(ifp)) { | |
1564 | struct pim_interface *pim_ifp; | |
1565 | ||
1566 | pim_ifp = ifp->info; | |
1567 | /* | |
1568 | * If we have a pim_ifp already and this is an if_add | |
1569 | * that means that we probably have a vrf move event | |
1570 | * If that is the case, set the proper vrfness. | |
1571 | */ | |
1572 | if (pim_ifp) | |
1573 | pim_ifp->pim = pim; | |
1574 | pim_if_addr_add_all(ifp); | |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | * If we are a vrf device that is up, open up the pim_socket for | |
1579 | * listening | |
1580 | * to incoming pim messages irrelevant if the user has configured us | |
1581 | * for pim or not. | |
1582 | */ | |
1583 | if (pim_if_is_vrf_device(ifp)) { | |
1584 | struct pim_interface *pim_ifp; | |
1585 | ||
1586 | if (!ifp->info) { | |
1587 | pim_ifp = pim_if_new(ifp, false, false, false, | |
1588 | false /*vxlan_term*/); | |
1589 | ifp->info = pim_ifp; | |
1590 | } | |
1591 | ||
1592 | pim_sock_add(ifp); | |
1593 | } | |
1594 | ||
1595 | if (!strncmp(ifp->name, PIM_VXLAN_TERM_DEV_NAME, | |
ccf696e8 | 1596 | sizeof(PIM_VXLAN_TERM_DEV_NAME))) { |
1597 | if (pim->mcast_if_count < MAXVIFS) | |
1598 | pim_vxlan_add_term_dev(pim, ifp); | |
1599 | else | |
1600 | zlog_warn( | |
1601 | "%s: Cannot enable pim on %s. MAXVIFS(%d) reached. Deleting and readding the vxlan termimation device after unconfiguring pim from other interfaces may succeed.", | |
1602 | __func__, ifp->name, MAXVIFS); | |
1603 | } | |
ef7bd2a3 | 1604 | |
138c5a74 DS |
1605 | return 0; |
1606 | } | |
1607 | ||
1608 | int pim_ifp_up(struct interface *ifp) | |
1609 | { | |
85d25587 | 1610 | struct pim_interface *pim_ifp; |
ddbf3e60 DS |
1611 | struct pim_instance *pim; |
1612 | uint32_t table_id; | |
1613 | ||
1614 | if (PIM_DEBUG_ZEBRA) { | |
1615 | zlog_debug( | |
1616 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1617 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1618 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
ddbf3e60 DS |
1619 | if_is_operative(ifp)); |
1620 | } | |
1621 | ||
1622 | pim = pim_get_pim_instance(ifp->vrf_id); | |
ddbf3e60 | 1623 | |
85d25587 DS |
1624 | pim_ifp = ifp->info; |
1625 | /* | |
1626 | * If we have a pim_ifp already and this is an if_add | |
1627 | * that means that we probably have a vrf move event | |
1628 | * If that is the case, set the proper vrfness. | |
1629 | */ | |
1630 | if (pim_ifp) | |
1631 | pim_ifp->pim = pim; | |
ddbf3e60 | 1632 | |
85d25587 DS |
1633 | /* |
1634 | pim_if_addr_add_all() suffices for bringing up both IGMP and | |
1635 | PIM | |
1636 | */ | |
1637 | pim_if_addr_add_all(ifp); | |
ddbf3e60 DS |
1638 | |
1639 | /* | |
1640 | * If we have a pimreg device callback and it's for a specific | |
1641 | * table set the master appropriately | |
1642 | */ | |
1643 | if (sscanf(ifp->name, "pimreg%" SCNu32, &table_id) == 1) { | |
1644 | struct vrf *vrf; | |
1645 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { | |
1646 | if ((table_id == vrf->data.l.table_id) | |
1647 | && (ifp->vrf_id != vrf->vrf_id)) { | |
1648 | struct interface *master = if_lookup_by_name( | |
1649 | vrf->name, vrf->vrf_id); | |
1650 | ||
1651 | if (!master) { | |
1652 | zlog_debug( | |
1653 | "%s: Unable to find Master interface for %s", | |
15569c58 | 1654 | __func__, vrf->name); |
ddbf3e60 DS |
1655 | return 0; |
1656 | } | |
1657 | pim_zebra_interface_set_master(master, ifp); | |
1658 | } | |
1659 | } | |
1660 | } | |
138c5a74 DS |
1661 | return 0; |
1662 | } | |
1663 | ||
1664 | int pim_ifp_down(struct interface *ifp) | |
1665 | { | |
b0b69e59 DS |
1666 | if (PIM_DEBUG_ZEBRA) { |
1667 | zlog_debug( | |
1668 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1669 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1670 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
b0b69e59 DS |
1671 | if_is_operative(ifp)); |
1672 | } | |
1673 | ||
1674 | if (!if_is_operative(ifp)) { | |
1675 | pim_ifchannel_delete_all(ifp); | |
1676 | /* | |
1677 | pim_if_addr_del_all() suffices for shutting down IGMP, | |
1678 | but not for shutting down PIM | |
1679 | */ | |
1680 | pim_if_addr_del_all(ifp); | |
1681 | ||
1682 | /* | |
1683 | pim_sock_delete() closes the socket, stops read and timer | |
1684 | threads, | |
1685 | and kills all neighbors. | |
1686 | */ | |
1687 | if (ifp->info) { | |
1688 | pim_sock_delete(ifp, "link down"); | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | if (ifp->info) | |
1693 | pim_if_del_vif(ifp); | |
1694 | ||
138c5a74 DS |
1695 | return 0; |
1696 | } | |
1697 | ||
1698 | int pim_ifp_destroy(struct interface *ifp) | |
1699 | { | |
3c3c3252 DS |
1700 | struct pim_instance *pim; |
1701 | ||
1702 | if (PIM_DEBUG_ZEBRA) { | |
1703 | zlog_debug( | |
1704 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", | |
15569c58 DA |
1705 | __func__, ifp->name, ifp->ifindex, ifp->vrf_id, |
1706 | (long)ifp->flags, ifp->metric, ifp->mtu, | |
3c3c3252 DS |
1707 | if_is_operative(ifp)); |
1708 | } | |
1709 | ||
1710 | if (!if_is_operative(ifp)) | |
1711 | pim_if_addr_del_all(ifp); | |
1712 | ||
1713 | pim = pim_get_pim_instance(ifp->vrf_id); | |
1714 | if (pim && pim->vxlan.term_if == ifp) | |
1715 | pim_vxlan_del_term_dev(pim); | |
1716 | ||
138c5a74 DS |
1717 | return 0; |
1718 | } |