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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 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
12e41d03 DL |
19 | |
20 | #include <zebra.h> | |
21 | ||
12e41d03 DL |
22 | #include "if.h" |
23 | #include "log.h" | |
24 | #include "prefix.h" | |
25 | #include "zclient.h" | |
26 | #include "stream.h" | |
27 | #include "network.h" | |
dfe43e25 DW |
28 | #include "vty.h" |
29 | #include "plist.h" | |
ba4eb1bc | 30 | #include "lib/bfd.h" |
12e41d03 DL |
31 | |
32 | #include "pimd.h" | |
33 | #include "pim_pim.h" | |
34 | #include "pim_zebra.h" | |
35 | #include "pim_iface.h" | |
36 | #include "pim_str.h" | |
37 | #include "pim_oil.h" | |
38 | #include "pim_rpf.h" | |
39 | #include "pim_time.h" | |
40 | #include "pim_join.h" | |
41 | #include "pim_zlookup.h" | |
42 | #include "pim_ifchannel.h" | |
8f5f5e91 | 43 | #include "pim_rp.h" |
2560106c | 44 | #include "pim_igmpv3.h" |
982bff89 | 45 | #include "pim_jp_agg.h" |
1bc98276 | 46 | #include "pim_nht.h" |
15a5dafe | 47 | #include "pim_ssm.h" |
af7b561b | 48 | #include "pim_vxlan.h" |
12e41d03 DL |
49 | |
50 | #undef PIM_DEBUG_IFADDR_DUMP | |
51 | #define PIM_DEBUG_IFADDR_DUMP | |
52 | ||
38f4935a DS |
53 | static struct zclient *zclient = NULL; |
54 | ||
12e41d03 | 55 | |
12e41d03 | 56 | /* Router-id update message from zebra. */ |
121f9dee | 57 | static int pim_router_id_update_zebra(ZAPI_CALLBACK_ARGS) |
12e41d03 | 58 | { |
d62a17ae | 59 | struct prefix router_id; |
12e41d03 | 60 | |
d62a17ae | 61 | zebra_router_id_update_read(zclient->ibuf, &router_id); |
12e41d03 | 62 | |
d62a17ae | 63 | return 0; |
12e41d03 DL |
64 | } |
65 | ||
121f9dee | 66 | static int pim_zebra_if_del(ZAPI_CALLBACK_ARGS) |
12e41d03 | 67 | { |
d62a17ae | 68 | struct interface *ifp; |
0a2dcc1c | 69 | struct pim_instance *pim; |
d62a17ae | 70 | |
d62a17ae | 71 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); |
72 | if (!ifp) | |
73 | return 0; | |
74 | ||
75 | if (PIM_DEBUG_ZEBRA) { | |
76 | zlog_debug( | |
87ad28f4 | 77 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 78 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 79 | (long)ifp->flags, ifp->metric, ifp->mtu, |
80 | if_is_operative(ifp)); | |
81 | } | |
82 | ||
83 | if (!if_is_operative(ifp)) | |
84 | pim_if_addr_del_all(ifp); | |
85 | ||
9d6c33ea DS |
86 | if_set_index(ifp, IFINDEX_INTERNAL); |
87 | ||
0a2dcc1c AK |
88 | pim = pim_get_pim_instance(vrf_id); |
89 | if (pim && pim->vxlan.term_if == ifp) | |
90 | pim_vxlan_del_term_dev(pim); | |
91 | ||
d62a17ae | 92 | return 0; |
12e41d03 DL |
93 | } |
94 | ||
121f9dee | 95 | static int pim_zebra_if_state_down(ZAPI_CALLBACK_ARGS) |
12e41d03 | 96 | { |
d62a17ae | 97 | struct interface *ifp; |
98 | ||
99 | /* | |
100 | zebra api notifies interface up/down events by using the same call | |
101 | zebra_interface_state_read below, see comments in lib/zclient.c | |
102 | */ | |
103 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
104 | if (!ifp) | |
105 | return 0; | |
106 | ||
107 | if (PIM_DEBUG_ZEBRA) { | |
108 | zlog_debug( | |
87ad28f4 | 109 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 110 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 111 | (long)ifp->flags, ifp->metric, ifp->mtu, |
112 | if_is_operative(ifp)); | |
113 | } | |
114 | ||
115 | if (!if_is_operative(ifp)) { | |
116 | pim_ifchannel_delete_all(ifp); | |
117 | /* | |
118 | pim_if_addr_del_all() suffices for shutting down IGMP, | |
119 | but not for shutting down PIM | |
120 | */ | |
121 | pim_if_addr_del_all(ifp); | |
122 | ||
123 | /* | |
124 | pim_sock_delete() closes the socket, stops read and timer | |
125 | threads, | |
126 | and kills all neighbors. | |
127 | */ | |
128 | if (ifp->info) { | |
129 | pim_sock_delete(ifp, "link down"); | |
130 | } | |
131 | } | |
132 | ||
133 | if (ifp->info) | |
134 | pim_if_del_vif(ifp); | |
135 | ||
136 | return 0; | |
12e41d03 DL |
137 | } |
138 | ||
121f9dee | 139 | static int pim_zebra_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
ee568318 DS |
140 | { |
141 | struct interface *ifp; | |
142 | vrf_id_t new_vrf_id; | |
143 | ||
144 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
145 | &new_vrf_id); | |
146 | if (!ifp) | |
147 | return 0; | |
148 | ||
149 | if (PIM_DEBUG_ZEBRA) | |
150 | zlog_debug("%s: %s updating from %u to %u", | |
151 | __PRETTY_FUNCTION__, | |
152 | ifp->name, vrf_id, new_vrf_id); | |
153 | ||
a36898e7 | 154 | if_update_to_new_vrf(ifp, new_vrf_id); |
ee568318 DS |
155 | |
156 | return 0; | |
157 | } | |
158 | ||
12e41d03 DL |
159 | #ifdef PIM_DEBUG_IFADDR_DUMP |
160 | static void dump_if_address(struct interface *ifp) | |
161 | { | |
d62a17ae | 162 | struct connected *ifc; |
163 | struct listnode *node; | |
164 | ||
165 | zlog_debug("%s %s: interface %s addresses:", __FILE__, | |
166 | __PRETTY_FUNCTION__, ifp->name); | |
167 | ||
168 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
169 | struct prefix *p = ifc->address; | |
170 | ||
171 | if (p->family != AF_INET) | |
172 | continue; | |
173 | ||
174 | zlog_debug("%s %s: interface %s address %s %s", __FILE__, | |
175 | __PRETTY_FUNCTION__, ifp->name, | |
176 | inet_ntoa(p->u.prefix4), | |
177 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
178 | ? "secondary" | |
179 | : "primary"); | |
180 | } | |
12e41d03 DL |
181 | } |
182 | #endif | |
183 | ||
121f9dee | 184 | static int pim_zebra_if_address_add(ZAPI_CALLBACK_ARGS) |
12e41d03 | 185 | { |
d62a17ae | 186 | struct connected *c; |
187 | struct prefix *p; | |
188 | struct pim_interface *pim_ifp; | |
26bb1fd5 | 189 | struct pim_instance *pim; |
d62a17ae | 190 | |
191 | /* | |
192 | zebra api notifies address adds/dels events by using the same call | |
193 | interface_add_read below, see comments in lib/zclient.c | |
194 | ||
195 | zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, ...) | |
196 | will add address to interface list by calling | |
197 | connected_add_by_prefix() | |
198 | */ | |
121f9dee | 199 | c = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); |
d62a17ae | 200 | if (!c) |
201 | return 0; | |
202 | ||
203 | pim_ifp = c->ifp->info; | |
204 | p = c->address; | |
205 | ||
206 | if (PIM_DEBUG_ZEBRA) { | |
207 | char buf[BUFSIZ]; | |
208 | prefix2str(p, buf, BUFSIZ); | |
87ad28f4 | 209 | zlog_debug("%s: %s(%u) connected IP address %s flags %u %s", |
e0ae31b8 | 210 | __PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf, |
996c9314 LB |
211 | c->flags, |
212 | CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) | |
213 | ? "secondary" | |
214 | : "primary"); | |
d62a17ae | 215 | |
12e41d03 | 216 | #ifdef PIM_DEBUG_IFADDR_DUMP |
d62a17ae | 217 | dump_if_address(c->ifp); |
12e41d03 | 218 | #endif |
d62a17ae | 219 | } |
12e41d03 | 220 | |
d62a17ae | 221 | if (!CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)) { |
222 | /* trying to add primary address */ | |
12e41d03 | 223 | |
d62a17ae | 224 | struct in_addr primary_addr = pim_find_primary_addr(c->ifp); |
225 | if (p->family != AF_INET | |
226 | || primary_addr.s_addr != p->u.prefix4.s_addr) { | |
227 | if (PIM_DEBUG_ZEBRA) { | |
228 | /* but we had a primary address already */ | |
12e41d03 | 229 | |
d62a17ae | 230 | char buf[BUFSIZ]; |
12e41d03 | 231 | |
d62a17ae | 232 | prefix2str(p, buf, BUFSIZ); |
12e41d03 | 233 | |
d62a17ae | 234 | zlog_warn( |
235 | "%s: %s : forcing secondary flag on %s", | |
236 | __PRETTY_FUNCTION__, c->ifp->name, buf); | |
237 | } | |
238 | SET_FLAG(c->flags, ZEBRA_IFA_SECONDARY); | |
239 | } | |
240 | } | |
12e41d03 | 241 | |
d62a17ae | 242 | pim_if_addr_add(c); |
26bb1fd5 DS |
243 | if (pim_ifp) { |
244 | pim = pim_get_pim_instance(vrf_id); | |
245 | pim_ifp->pim = pim; | |
246 | ||
d62a17ae | 247 | pim_rp_check_on_if_add(pim_ifp); |
26bb1fd5 | 248 | } |
12e41d03 | 249 | |
d62a17ae | 250 | if (if_is_loopback(c->ifp)) { |
f4e14fdb | 251 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 252 | struct interface *ifp; |
d8424057 | 253 | |
451fda4f | 254 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 255 | if (!if_is_loopback(ifp) && if_is_operative(ifp)) |
256 | pim_if_addr_add_all(ifp); | |
257 | } | |
258 | } | |
d8424057 | 259 | |
d62a17ae | 260 | return 0; |
12e41d03 DL |
261 | } |
262 | ||
121f9dee | 263 | static int pim_zebra_if_address_del(ZAPI_CALLBACK_ARGS) |
12e41d03 | 264 | { |
d62a17ae | 265 | struct connected *c; |
266 | struct prefix *p; | |
fec883d9 | 267 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
819f099b DS |
268 | struct pim_instance *pim; |
269 | ||
270 | if (!vrf) | |
271 | return 0; | |
272 | pim = vrf->info; | |
d62a17ae | 273 | |
274 | /* | |
275 | zebra api notifies address adds/dels events by using the same call | |
276 | interface_add_read below, see comments in lib/zclient.c | |
277 | ||
278 | zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, ...) | |
279 | will remove address from interface list by calling | |
280 | connected_delete_by_prefix() | |
281 | */ | |
121f9dee | 282 | c = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); |
d62a17ae | 283 | if (!c) |
284 | return 0; | |
285 | ||
286 | p = c->address; | |
287 | if (p->family == AF_INET) { | |
288 | if (PIM_DEBUG_ZEBRA) { | |
289 | char buf[BUFSIZ]; | |
290 | prefix2str(p, buf, BUFSIZ); | |
291 | zlog_debug( | |
87ad28f4 | 292 | "%s: %s(%u) disconnected IP address %s flags %u %s", |
e0ae31b8 | 293 | __PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf, |
d62a17ae | 294 | c->flags, |
295 | CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) | |
296 | ? "secondary" | |
297 | : "primary"); | |
6233f087 | 298 | |
12e41d03 | 299 | #ifdef PIM_DEBUG_IFADDR_DUMP |
d62a17ae | 300 | dump_if_address(c->ifp); |
12e41d03 | 301 | #endif |
d62a17ae | 302 | } |
12e41d03 | 303 | |
d62a17ae | 304 | pim_if_addr_del(c, 0); |
fec883d9 DS |
305 | pim_rp_setup(pim); |
306 | pim_i_am_rp_re_evaluate(pim); | |
d62a17ae | 307 | } |
6233f087 | 308 | |
d62a17ae | 309 | connected_free(c); |
310 | return 0; | |
12e41d03 DL |
311 | } |
312 | ||
74389231 DS |
313 | void pim_zebra_update_all_interfaces(struct pim_instance *pim) |
314 | { | |
315 | struct interface *ifp; | |
316 | ||
317 | FOR_ALL_INTERFACES (pim->vrf, ifp) { | |
318 | struct pim_interface *pim_ifp = ifp->info; | |
319 | struct pim_iface_upstream_switch *us; | |
320 | struct listnode *node; | |
321 | ||
322 | if (!pim_ifp) | |
323 | continue; | |
324 | ||
325 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->upstream_switch_list, node, | |
326 | us)) { | |
327 | struct pim_rpf rpf; | |
328 | ||
329 | rpf.source_nexthop.interface = ifp; | |
330 | rpf.rpf_addr.u.prefix4 = us->address; | |
331 | pim_joinprune_send(&rpf, us->us); | |
332 | pim_jp_agg_clear_group(us->us); | |
333 | } | |
334 | } | |
335 | } | |
336 | ||
cc67ccf9 DS |
337 | void pim_zebra_upstream_rpf_changed(struct pim_instance *pim, |
338 | struct pim_upstream *up, | |
339 | struct pim_rpf *old) | |
340 | { | |
1250cb5d SP |
341 | if (old->source_nexthop.interface) { |
342 | struct pim_neighbor *nbr; | |
cc67ccf9 | 343 | |
1250cb5d SP |
344 | nbr = pim_neighbor_find(old->source_nexthop.interface, |
345 | old->rpf_addr.u.prefix4); | |
346 | if (nbr) | |
347 | pim_jp_agg_remove_group(nbr->upstream_jp_agg, up); | |
cc67ccf9 | 348 | |
cc67ccf9 | 349 | /* |
1250cb5d SP |
350 | * We have detected a case where we might need |
351 | * to rescan the inherited o_list so do it. | |
cc67ccf9 | 352 | */ |
1250cb5d SP |
353 | if (up->channel_oil->oil_inherited_rescan) { |
354 | pim_upstream_inherited_olist_decide(pim, up); | |
355 | up->channel_oil->oil_inherited_rescan = 0; | |
356 | } | |
cc67ccf9 | 357 | |
1250cb5d SP |
358 | if (up->join_state == PIM_UPSTREAM_JOINED) { |
359 | /* | |
360 | * If we come up real fast we can be here | |
361 | * where the mroute has not been installed | |
362 | * so install it. | |
363 | */ | |
364 | if (!up->channel_oil->installed) | |
365 | pim_mroute_add(up->channel_oil, | |
366 | __PRETTY_FUNCTION__); | |
367 | ||
368 | /* | |
369 | * RFC 4601: 4.5.7. Sending (S,G) | |
370 | * Join/Prune Messages | |
371 | * | |
372 | * Transitions from Joined State | |
373 | * | |
374 | * RPF'(S,G) changes not due to an Assert | |
375 | * | |
376 | * The upstream (S,G) state machine remains | |
377 | * in Joined state. Send Join(S,G) to the new | |
378 | * upstream neighbor, which is the new value | |
379 | * of RPF'(S,G). Send Prune(S,G) to the old | |
380 | * upstream neighbor, which is the old value | |
381 | * of RPF'(S,G). Set the Join Timer (JT) to | |
382 | * expire after t_periodic seconds. | |
383 | */ | |
384 | pim_jp_agg_switch_interface(old, &up->rpf, up); | |
385 | ||
386 | pim_upstream_join_timer_restart(up, old); | |
387 | } /* up->join_state == PIM_UPSTREAM_JOINED */ | |
388 | } | |
389 | ||
390 | else { | |
cc67ccf9 | 391 | /* |
1250cb5d SP |
392 | * We have detected a case where we might need |
393 | * to rescan the inherited o_list so do it. | |
cc67ccf9 | 394 | */ |
1250cb5d SP |
395 | if (up->channel_oil->oil_inherited_rescan) { |
396 | pim_upstream_inherited_olist_decide(pim, up); | |
397 | up->channel_oil->oil_inherited_rescan = 0; | |
398 | } | |
cc67ccf9 | 399 | |
1250cb5d SP |
400 | if (!up->channel_oil->installed) |
401 | pim_mroute_add(up->channel_oil, __PRETTY_FUNCTION__); | |
402 | } | |
cc67ccf9 | 403 | |
1250cb5d SP |
404 | /* FIXME can join_desired actually be changed by pim_rpf_update() |
405 | * returning PIM_RPF_CHANGED ? | |
406 | */ | |
cc67ccf9 DS |
407 | pim_upstream_update_join_desired(pim, up); |
408 | } | |
409 | ||
121f9dee | 410 | static int pim_zebra_vxlan_sg_proc(ZAPI_CALLBACK_ARGS) |
af7b561b AK |
411 | { |
412 | struct stream *s; | |
413 | struct pim_instance *pim; | |
414 | struct prefix_sg sg; | |
415 | ||
416 | pim = pim_get_pim_instance(vrf_id); | |
417 | if (!pim) | |
418 | return 0; | |
419 | ||
420 | s = zclient->ibuf; | |
421 | ||
422 | sg.family = AF_INET; | |
423 | sg.prefixlen = stream_getl(s); | |
424 | stream_get(&sg.src.s_addr, s, sg.prefixlen); | |
425 | stream_get(&sg.grp.s_addr, s, sg.prefixlen); | |
426 | ||
427 | if (PIM_DEBUG_ZEBRA) { | |
428 | char sg_str[PIM_SG_LEN]; | |
429 | ||
430 | pim_str_sg_set(&sg, sg_str); | |
431 | zlog_debug("%u:recv SG %s %s", vrf_id, | |
121f9dee | 432 | (cmd == ZEBRA_VXLAN_SG_ADD)?"add":"del", |
af7b561b AK |
433 | sg_str); |
434 | } | |
435 | ||
121f9dee | 436 | if (cmd == ZEBRA_VXLAN_SG_ADD) |
af7b561b AK |
437 | pim_vxlan_sg_add(pim, &sg); |
438 | else | |
439 | pim_vxlan_sg_del(pim, &sg); | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
ecbbc3a7 AK |
444 | static void pim_zebra_vxlan_replay(void) |
445 | { | |
446 | struct stream *s = NULL; | |
447 | ||
448 | /* Check socket. */ | |
449 | if (!zclient || zclient->sock < 0) | |
450 | return; | |
451 | ||
452 | s = zclient->obuf; | |
453 | stream_reset(s); | |
454 | ||
455 | zclient_create_header(s, ZEBRA_VXLAN_SG_REPLAY, VRF_DEFAULT); | |
456 | stream_putw_at(s, 0, stream_get_endp(s)); | |
457 | ||
458 | zclient_send_message(zclient); | |
459 | } | |
460 | ||
d62a17ae | 461 | void pim_scan_individual_oil(struct channel_oil *c_oil, int in_vif_index) |
12e41d03 | 462 | { |
d62a17ae | 463 | struct in_addr vif_source; |
464 | int input_iface_vif_index; | |
d62a17ae | 465 | |
732c209c | 466 | pim_rp_set_upstream_addr(c_oil->pim, &vif_source, |
d9c9a9ee | 467 | c_oil->oil.mfcc_origin, |
732c209c | 468 | c_oil->oil.mfcc_mcastgrp); |
d62a17ae | 469 | |
470 | if (in_vif_index) | |
471 | input_iface_vif_index = in_vif_index; | |
472 | else { | |
473 | struct prefix src, grp; | |
474 | ||
475 | src.family = AF_INET; | |
476 | src.prefixlen = IPV4_MAX_BITLEN; | |
477 | src.u.prefix4 = vif_source; | |
478 | grp.family = AF_INET; | |
479 | grp.prefixlen = IPV4_MAX_BITLEN; | |
480 | grp.u.prefix4 = c_oil->oil.mfcc_mcastgrp; | |
481 | ||
482 | if (PIM_DEBUG_ZEBRA) { | |
483 | char source_str[INET_ADDRSTRLEN]; | |
484 | char group_str[INET_ADDRSTRLEN]; | |
485 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
486 | source_str, sizeof(source_str)); | |
487 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
488 | group_str, sizeof(group_str)); | |
489 | zlog_debug( | |
a895ac30 | 490 | "%s: channel_oil (%s,%s) upstream info is not present.", |
d62a17ae | 491 | __PRETTY_FUNCTION__, source_str, group_str); |
492 | } | |
493 | input_iface_vif_index = pim_ecmp_fib_lookup_if_vif_index( | |
b938537b | 494 | c_oil->pim, &src, &grp); |
d62a17ae | 495 | } |
496 | ||
497 | if (input_iface_vif_index < 1) { | |
498 | if (PIM_DEBUG_ZEBRA) { | |
499 | char source_str[INET_ADDRSTRLEN]; | |
500 | char group_str[INET_ADDRSTRLEN]; | |
501 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
502 | source_str, sizeof(source_str)); | |
503 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
504 | group_str, sizeof(group_str)); | |
505 | zlog_debug( | |
506 | "%s %s: could not find input interface(%d) for (S,G)=(%s,%s)", | |
507 | __FILE__, __PRETTY_FUNCTION__, | |
508 | c_oil->oil.mfcc_parent, source_str, group_str); | |
509 | } | |
510 | pim_mroute_del(c_oil, __PRETTY_FUNCTION__); | |
511 | return; | |
512 | } | |
513 | ||
514 | if (input_iface_vif_index == c_oil->oil.mfcc_parent) { | |
515 | if (!c_oil->installed) | |
516 | pim_mroute_add(c_oil, __PRETTY_FUNCTION__); | |
517 | ||
518 | /* RPF unchanged */ | |
519 | return; | |
520 | } | |
521 | ||
522 | if (PIM_DEBUG_ZEBRA) { | |
7cfc7bcf DS |
523 | struct interface *old_iif = pim_if_find_by_vif_index( |
524 | c_oil->pim, c_oil->oil.mfcc_parent); | |
525 | struct interface *new_iif = pim_if_find_by_vif_index( | |
526 | c_oil->pim, input_iface_vif_index); | |
d62a17ae | 527 | char source_str[INET_ADDRSTRLEN]; |
528 | char group_str[INET_ADDRSTRLEN]; | |
529 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, | |
530 | sizeof(source_str)); | |
531 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, | |
532 | sizeof(group_str)); | |
533 | zlog_debug( | |
534 | "%s %s: (S,G)=(%s,%s) input interface changed from %s vif_index=%d to %s vif_index=%d", | |
535 | __FILE__, __PRETTY_FUNCTION__, source_str, group_str, | |
97f03dde DS |
536 | (old_iif) ? old_iif->name : "<old_iif?>", |
537 | c_oil->oil.mfcc_parent, | |
538 | (new_iif) ? new_iif->name : "<new_iif?>", | |
d62a17ae | 539 | input_iface_vif_index); |
540 | } | |
541 | ||
542 | /* new iif loops to existing oif ? */ | |
543 | if (c_oil->oil.mfcc_ttls[input_iface_vif_index]) { | |
7cfc7bcf DS |
544 | struct interface *new_iif = pim_if_find_by_vif_index( |
545 | c_oil->pim, input_iface_vif_index); | |
d62a17ae | 546 | |
547 | if (PIM_DEBUG_ZEBRA) { | |
548 | char source_str[INET_ADDRSTRLEN]; | |
549 | char group_str[INET_ADDRSTRLEN]; | |
550 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
551 | source_str, sizeof(source_str)); | |
552 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
553 | group_str, sizeof(group_str)); | |
554 | zlog_debug( | |
555 | "%s %s: (S,G)=(%s,%s) new iif loops to existing oif: %s vif_index=%d", | |
556 | __FILE__, __PRETTY_FUNCTION__, source_str, | |
97f03dde DS |
557 | group_str, |
558 | (new_iif) ? new_iif->name : "<new_iif?>", | |
d62a17ae | 559 | input_iface_vif_index); |
560 | } | |
561 | } | |
562 | ||
563 | /* update iif vif_index */ | |
afb2f470 DS |
564 | pim_channel_oil_change_iif(c_oil->pim, c_oil, input_iface_vif_index, |
565 | __PRETTY_FUNCTION__); | |
566 | pim_mroute_add(c_oil, __PRETTY_FUNCTION__); | |
8a67a996 DS |
567 | } |
568 | ||
da11e325 | 569 | void pim_scan_oil(struct pim_instance *pim) |
8a67a996 | 570 | { |
d62a17ae | 571 | struct listnode *node; |
572 | struct listnode *nextnode; | |
573 | struct channel_oil *c_oil; | |
574 | ifindex_t ifindex; | |
575 | int vif_index = 0; | |
576 | ||
bfc92019 DS |
577 | pim->scan_oil_last = pim_time_monotonic_sec(); |
578 | ++pim->scan_oil_events; | |
d62a17ae | 579 | |
da11e325 DS |
580 | for (ALL_LIST_ELEMENTS(pim->channel_oil_list, node, nextnode, c_oil)) { |
581 | if (c_oil->up && c_oil->up->rpf.source_nexthop.interface) { | |
582 | ifindex = c_oil->up->rpf.source_nexthop | |
583 | .interface->ifindex; | |
584 | vif_index = | |
585 | pim_if_find_vifindex_by_ifindex(pim, ifindex); | |
586 | /* Pass Current selected NH vif index to mroute | |
587 | * download */ | |
588 | if (vif_index) | |
589 | pim_scan_individual_oil(c_oil, vif_index); | |
590 | } else | |
591 | pim_scan_individual_oil(c_oil, 0); | |
d62a17ae | 592 | } |
12e41d03 DL |
593 | } |
594 | ||
595 | static int on_rpf_cache_refresh(struct thread *t) | |
596 | { | |
da11e325 DS |
597 | struct pim_instance *pim = THREAD_ARG(t); |
598 | ||
d62a17ae | 599 | /* update kernel multicast forwarding cache (MFC) */ |
da11e325 | 600 | pim_scan_oil(pim); |
12e41d03 | 601 | |
bfc92019 DS |
602 | pim->rpf_cache_refresh_last = pim_time_monotonic_sec(); |
603 | ++pim->rpf_cache_refresh_events; | |
12e41d03 | 604 | |
d62a17ae | 605 | // It is called as part of pim_neighbor_add |
606 | // pim_rp_setup (); | |
607 | return 0; | |
12e41d03 DL |
608 | } |
609 | ||
da11e325 | 610 | void sched_rpf_cache_refresh(struct pim_instance *pim) |
12e41d03 | 611 | { |
bfc92019 | 612 | ++pim->rpf_cache_refresh_requests; |
12e41d03 | 613 | |
bfc92019 | 614 | pim_rpf_set_refresh_time(pim); |
e71bf8f7 | 615 | |
da11e325 | 616 | if (pim->rpf_cache_refresher) { |
d62a17ae | 617 | /* Refresh timer is already running */ |
618 | return; | |
619 | } | |
12e41d03 | 620 | |
d62a17ae | 621 | /* Start refresh timer */ |
12e41d03 | 622 | |
d62a17ae | 623 | if (PIM_DEBUG_ZEBRA) { |
624 | zlog_debug("%s: triggering %ld msec timer", __PRETTY_FUNCTION__, | |
da03883e | 625 | router->rpf_cache_refresh_delay_msec); |
d62a17ae | 626 | } |
12e41d03 | 627 | |
36417fcc | 628 | thread_add_timer_msec(router->master, on_rpf_cache_refresh, pim, |
da03883e | 629 | router->rpf_cache_refresh_delay_msec, |
da11e325 | 630 | &pim->rpf_cache_refresher); |
12e41d03 DL |
631 | } |
632 | ||
d62a17ae | 633 | static void pim_zebra_connected(struct zclient *zclient) |
48e8451b | 634 | { |
d62a17ae | 635 | /* Send the client registration */ |
0945d5ed | 636 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER, router->vrf_id); |
ba4eb1bc | 637 | |
4dfe9ad2 | 638 | zclient_send_reg_requests(zclient, router->vrf_id); |
ecbbc3a7 AK |
639 | |
640 | /* request for VxLAN BUM group addresses */ | |
641 | pim_zebra_vxlan_replay(); | |
48e8451b | 642 | } |
8711a53d | 643 | |
ac567a6f DS |
644 | static void pim_zebra_capabilities(struct zclient_capabilities *cap) |
645 | { | |
d6749d74 | 646 | router->role = cap->role; |
ac567a6f DS |
647 | } |
648 | ||
eb05883f | 649 | void pim_zebra_init(void) |
12e41d03 | 650 | { |
d62a17ae | 651 | /* Socket for receiving updates from Zebra daemon */ |
36417fcc | 652 | zclient = zclient_new(router->master, &zclient_options_default); |
d62a17ae | 653 | |
ac567a6f | 654 | zclient->zebra_capabilities = pim_zebra_capabilities; |
d62a17ae | 655 | zclient->zebra_connected = pim_zebra_connected; |
656 | zclient->router_id_update = pim_router_id_update_zebra; | |
d62a17ae | 657 | zclient->interface_delete = pim_zebra_if_del; |
d62a17ae | 658 | zclient->interface_down = pim_zebra_if_state_down; |
659 | zclient->interface_address_add = pim_zebra_if_address_add; | |
660 | zclient->interface_address_delete = pim_zebra_if_address_del; | |
ee568318 | 661 | zclient->interface_vrf_update = pim_zebra_interface_vrf_update; |
d62a17ae | 662 | zclient->nexthop_update = pim_parse_nexthop_update; |
af7b561b AK |
663 | zclient->vxlan_sg_add = pim_zebra_vxlan_sg_proc; |
664 | zclient->vxlan_sg_del = pim_zebra_vxlan_sg_proc; | |
d62a17ae | 665 | |
342213ea | 666 | zclient_init(zclient, ZEBRA_ROUTE_PIM, 0, &pimd_privs); |
d62a17ae | 667 | if (PIM_DEBUG_PIM_TRACE) { |
87270023 | 668 | zlog_notice("%s: zclient socket initialized", |
d62a17ae | 669 | __PRETTY_FUNCTION__); |
670 | } | |
671 | ||
672 | zclient_lookup_new(); | |
12e41d03 DL |
673 | } |
674 | ||
6f932b0c DS |
675 | void igmp_anysource_forward_start(struct pim_instance *pim, |
676 | struct igmp_group *group) | |
12e41d03 | 677 | { |
d62a17ae | 678 | struct igmp_source *source; |
679 | struct in_addr src_addr = {.s_addr = 0}; | |
680 | /* Any source (*,G) is forwarded only if mode is EXCLUDE {empty} */ | |
681 | zassert(group->group_filtermode_isexcl); | |
682 | zassert(listcount(group->group_source_list) < 1); | |
683 | ||
684 | source = source_new(group, src_addr); | |
685 | if (!source) { | |
686 | zlog_warn("%s: Failure to create * source", | |
687 | __PRETTY_FUNCTION__); | |
688 | return; | |
689 | } | |
690 | ||
6f932b0c | 691 | igmp_source_forward_start(pim, source); |
12e41d03 DL |
692 | } |
693 | ||
694 | void igmp_anysource_forward_stop(struct igmp_group *group) | |
695 | { | |
d62a17ae | 696 | struct igmp_source *source; |
697 | struct in_addr star = {.s_addr = 0}; | |
12e41d03 | 698 | |
d62a17ae | 699 | source = igmp_find_source_by_addr(group, star); |
700 | if (source) | |
701 | igmp_source_forward_stop(source); | |
12e41d03 DL |
702 | } |
703 | ||
6f439a70 DS |
704 | static void igmp_source_forward_reevaluate_one(struct pim_instance *pim, |
705 | struct igmp_source *source) | |
15a5dafe | 706 | { |
d62a17ae | 707 | struct prefix_sg sg; |
708 | struct igmp_group *group = source->source_group; | |
709 | struct pim_ifchannel *ch; | |
710 | ||
711 | if ((source->source_addr.s_addr != INADDR_ANY) | |
712 | || !IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) | |
713 | return; | |
714 | ||
715 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
716 | sg.src = source->source_addr; | |
717 | sg.grp = group->group_addr; | |
718 | ||
719 | ch = pim_ifchannel_find(group->group_igmp_sock->interface, &sg); | |
6f439a70 | 720 | if (pim_is_grp_ssm(pim, group->group_addr)) { |
d62a17ae | 721 | /* If SSM group withdraw local membership */ |
722 | if (ch | |
723 | && (ch->local_ifmembership == PIM_IFMEMBERSHIP_INCLUDE)) { | |
724 | if (PIM_DEBUG_PIM_EVENTS) | |
725 | zlog_debug( | |
726 | "local membership del for %s as G is now SSM", | |
727 | pim_str_sg_dump(&sg)); | |
728 | pim_ifchannel_local_membership_del( | |
729 | group->group_igmp_sock->interface, &sg); | |
730 | } | |
731 | } else { | |
732 | /* If ASM group add local membership */ | |
733 | if (!ch | |
734 | || (ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO)) { | |
735 | if (PIM_DEBUG_PIM_EVENTS) | |
736 | zlog_debug( | |
737 | "local membership add for %s as G is now ASM", | |
738 | pim_str_sg_dump(&sg)); | |
739 | pim_ifchannel_local_membership_add( | |
740 | group->group_igmp_sock->interface, &sg); | |
741 | } | |
742 | } | |
15a5dafe | 743 | } |
744 | ||
5d59e408 | 745 | void igmp_source_forward_reevaluate_all(struct pim_instance *pim) |
15a5dafe | 746 | { |
d62a17ae | 747 | struct interface *ifp; |
748 | ||
5d59e408 DS |
749 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
750 | struct pim_interface *pim_ifp = ifp->info; | |
751 | struct listnode *sock_node; | |
752 | struct igmp_sock *igmp; | |
753 | ||
754 | if (!pim_ifp) | |
d62a17ae | 755 | continue; |
756 | ||
5d59e408 DS |
757 | /* scan igmp sockets */ |
758 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, | |
759 | igmp)) { | |
760 | struct listnode *grpnode; | |
761 | struct igmp_group *grp; | |
762 | ||
763 | /* scan igmp groups */ | |
764 | for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, | |
765 | grpnode, grp)) { | |
766 | struct listnode *srcnode; | |
767 | struct igmp_source *src; | |
768 | ||
769 | /* scan group sources */ | |
770 | for (ALL_LIST_ELEMENTS_RO( | |
771 | grp->group_source_list, srcnode, | |
772 | src)) { | |
773 | igmp_source_forward_reevaluate_one(pim, | |
774 | src); | |
775 | } /* scan group sources */ | |
776 | } /* scan igmp groups */ | |
777 | } /* scan igmp sockets */ | |
778 | } /* scan interfaces */ | |
15a5dafe | 779 | } |
780 | ||
6f932b0c DS |
781 | void igmp_source_forward_start(struct pim_instance *pim, |
782 | struct igmp_source *source) | |
12e41d03 | 783 | { |
75c61a18 | 784 | struct pim_interface *pim_oif; |
d62a17ae | 785 | struct igmp_group *group; |
786 | struct prefix_sg sg; | |
787 | int result; | |
788 | int input_iface_vif_index = 0; | |
789 | ||
790 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
791 | sg.src = source->source_addr; | |
792 | sg.grp = source->source_group->group_addr; | |
793 | ||
794 | if (PIM_DEBUG_IGMP_TRACE) { | |
795 | zlog_debug( | |
796 | "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d", | |
797 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
798 | source->source_group->group_igmp_sock->fd, | |
799 | source->source_group->group_igmp_sock->interface->name, | |
800 | IGMP_SOURCE_TEST_FORWARDING(source->source_flags)); | |
801 | } | |
802 | ||
803 | /* Prevent IGMP interface from installing multicast route multiple | |
804 | times */ | |
805 | if (IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) { | |
806 | return; | |
8711a53d | 807 | } |
d62a17ae | 808 | |
809 | group = source->source_group; | |
75c61a18 DS |
810 | pim_oif = group->group_igmp_sock->interface->info; |
811 | if (!pim_oif) { | |
812 | if (PIM_DEBUG_IGMP_TRACE) { | |
813 | zlog_debug( | |
814 | "%s: multicast not enabled on oif=%s ?", | |
815 | __PRETTY_FUNCTION__, | |
816 | source->source_group->group_igmp_sock | |
817 | ->interface->name); | |
818 | } | |
819 | return; | |
820 | } | |
d62a17ae | 821 | |
822 | if (!source->source_channel_oil) { | |
823 | struct in_addr vif_source; | |
d1a1b09c | 824 | struct prefix src, grp; |
d62a17ae | 825 | struct pim_nexthop nexthop; |
826 | struct pim_upstream *up = NULL; | |
827 | ||
6f932b0c | 828 | if (!pim_rp_set_upstream_addr(pim, &vif_source, |
732c209c SP |
829 | source->source_addr, sg.grp)) { |
830 | /*Create a dummy channel oil */ | |
8a3e7e9e DS |
831 | source->source_channel_oil = pim_channel_oil_add( |
832 | pim, &sg, MAXVIFS, __PRETTY_FUNCTION__); | |
732c209c | 833 | } |
d62a17ae | 834 | |
732c209c | 835 | else { |
732c209c SP |
836 | src.family = AF_INET; |
837 | src.prefixlen = IPV4_MAX_BITLEN; | |
838 | src.u.prefix4 = vif_source; // RP or Src address | |
839 | grp.family = AF_INET; | |
840 | grp.prefixlen = IPV4_MAX_BITLEN; | |
841 | grp.u.prefix4 = sg.grp; | |
842 | ||
43763b11 DS |
843 | up = pim_upstream_find(pim, &sg); |
844 | if (up) { | |
845 | memcpy(&nexthop, &up->rpf.source_nexthop, | |
846 | sizeof(struct pim_nexthop)); | |
847 | pim_ecmp_nexthop_lookup(pim, &nexthop, &src, | |
848 | &grp, 0); | |
849 | if (nexthop.interface) | |
850 | input_iface_vif_index = | |
d62a17ae | 851 | pim_if_find_vifindex_by_ifindex( |
43763b11 DS |
852 | pim, |
853 | nexthop.interface->ifindex); | |
732c209c SP |
854 | } else |
855 | input_iface_vif_index = | |
43763b11 DS |
856 | pim_ecmp_fib_lookup_if_vif_index( |
857 | pim, &src, &grp); | |
d62a17ae | 858 | |
732c209c SP |
859 | if (PIM_DEBUG_ZEBRA) { |
860 | char buf2[INET_ADDRSTRLEN]; | |
d62a17ae | 861 | |
732c209c SP |
862 | pim_inet4_dump("<source?>", vif_source, buf2, |
863 | sizeof(buf2)); | |
864 | zlog_debug("%s: NHT %s vif_source %s vif_index:%d ", | |
d62a17ae | 865 | __PRETTY_FUNCTION__, |
866 | pim_str_sg_dump(&sg), | |
732c209c | 867 | buf2, input_iface_vif_index); |
d62a17ae | 868 | } |
d62a17ae | 869 | |
732c209c SP |
870 | if (input_iface_vif_index < 1) { |
871 | if (PIM_DEBUG_IGMP_TRACE) { | |
872 | char source_str[INET_ADDRSTRLEN]; | |
873 | pim_inet4_dump("<source?>", | |
874 | source->source_addr, | |
875 | source_str, sizeof(source_str)); | |
876 | zlog_debug( | |
877 | "%s %s: could not find input interface for source %s", | |
878 | __FILE__, __PRETTY_FUNCTION__, | |
879 | source_str); | |
880 | } | |
881 | source->source_channel_oil = | |
8a3e7e9e DS |
882 | pim_channel_oil_add( |
883 | pim, &sg, MAXVIFS, | |
884 | __PRETTY_FUNCTION__); | |
732c209c SP |
885 | } |
886 | ||
887 | else { | |
888 | /* | |
889 | * Protect IGMP against adding looped MFC | |
890 | * entries created by both source and receiver | |
891 | * attached to the same interface. See TODO | |
50d06d9e | 892 | * T22. Block only when the intf is non DR |
893 | * DR must create upstream. | |
732c209c | 894 | */ |
50d06d9e | 895 | if ((input_iface_vif_index == |
896 | pim_oif->mroute_vif_index) && | |
897 | !(PIM_I_am_DR(pim_oif))) { | |
732c209c SP |
898 | /* ignore request for looped MFC entry |
899 | */ | |
900 | if (PIM_DEBUG_IGMP_TRACE) { | |
901 | zlog_debug( | |
902 | "%s: ignoring request for looped MFC entry (S,G)=%s: igmp_sock=%d oif=%s vif_index=%d", | |
903 | __PRETTY_FUNCTION__, | |
904 | pim_str_sg_dump(&sg), | |
905 | source->source_group | |
906 | ->group_igmp_sock->fd, | |
907 | source->source_group | |
908 | ->group_igmp_sock | |
909 | ->interface->name, | |
910 | input_iface_vif_index); | |
911 | } | |
912 | return; | |
913 | } | |
914 | ||
915 | source->source_channel_oil = | |
8a3e7e9e DS |
916 | pim_channel_oil_add( |
917 | pim, &sg, input_iface_vif_index, | |
918 | __PRETTY_FUNCTION__); | |
732c209c SP |
919 | if (!source->source_channel_oil) { |
920 | if (PIM_DEBUG_IGMP_TRACE) { | |
921 | zlog_debug( | |
922 | "%s %s: could not create OIL for channel (S,G)=%s", | |
923 | __FILE__, | |
924 | __PRETTY_FUNCTION__, | |
925 | pim_str_sg_dump(&sg)); | |
926 | } | |
927 | return; | |
928 | } | |
d62a17ae | 929 | } |
d62a17ae | 930 | } |
8711a53d | 931 | } |
d62a17ae | 932 | |
933 | result = pim_channel_add_oif(source->source_channel_oil, | |
934 | group->group_igmp_sock->interface, | |
935 | PIM_OIF_FLAG_PROTO_IGMP); | |
936 | if (result) { | |
937 | if (PIM_DEBUG_MROUTE) { | |
938 | zlog_warn("%s: add_oif() failed with return=%d", | |
939 | __func__, result); | |
940 | } | |
941 | return; | |
8711a53d | 942 | } |
d62a17ae | 943 | |
90a084e4 DS |
944 | if (!(PIM_I_am_DR(pim_oif))) { |
945 | if (PIM_DEBUG_IGMP_TRACE) | |
946 | zlog_debug("%s: %s was received on %s interface but we are not DR for that interface", | |
947 | __PRETTY_FUNCTION__, | |
948 | pim_str_sg_dump(&sg), | |
949 | group->group_igmp_sock->interface->name); | |
b96892db DS |
950 | |
951 | pim_channel_del_oif(source->source_channel_oil, | |
952 | group->group_igmp_sock->interface, | |
953 | PIM_OIF_FLAG_PROTO_IGMP); | |
75c61a18 | 954 | return; |
90a084e4 | 955 | } |
d62a17ae | 956 | /* |
957 | Feed IGMPv3-gathered local membership information into PIM | |
958 | per-interface (S,G) state. | |
959 | */ | |
960 | if (!pim_ifchannel_local_membership_add( | |
75c61a18 | 961 | group->group_igmp_sock->interface, &sg)) { |
d62a17ae | 962 | if (PIM_DEBUG_MROUTE) |
963 | zlog_warn("%s: Failure to add local membership for %s", | |
964 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
b96892db DS |
965 | |
966 | pim_channel_del_oif(source->source_channel_oil, | |
967 | group->group_igmp_sock->interface, | |
968 | PIM_OIF_FLAG_PROTO_IGMP); | |
d62a17ae | 969 | return; |
970 | } | |
971 | ||
972 | IGMP_SOURCE_DO_FORWARDING(source->source_flags); | |
12e41d03 DL |
973 | } |
974 | ||
975 | /* | |
976 | igmp_source_forward_stop: stop fowarding, but keep the source | |
977 | igmp_source_delete: stop fowarding, and delete the source | |
978 | */ | |
979 | void igmp_source_forward_stop(struct igmp_source *source) | |
980 | { | |
d62a17ae | 981 | struct igmp_group *group; |
982 | struct prefix_sg sg; | |
983 | int result; | |
984 | ||
985 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
986 | sg.src = source->source_addr; | |
987 | sg.grp = source->source_group->group_addr; | |
988 | ||
989 | if (PIM_DEBUG_IGMP_TRACE) { | |
990 | zlog_debug( | |
991 | "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d", | |
992 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
993 | source->source_group->group_igmp_sock->fd, | |
994 | source->source_group->group_igmp_sock->interface->name, | |
995 | IGMP_SOURCE_TEST_FORWARDING(source->source_flags)); | |
996 | } | |
997 | ||
998 | /* Prevent IGMP interface from removing multicast route multiple | |
999 | times */ | |
1000 | if (!IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) { | |
1001 | return; | |
1002 | } | |
1003 | ||
1004 | group = source->source_group; | |
1005 | ||
1006 | /* | |
1007 | It appears that in certain circumstances that | |
1008 | igmp_source_forward_stop is called when IGMP forwarding | |
1009 | was not enabled in oif_flags for this outgoing interface. | |
1010 | Possibly because of multiple calls. When that happens, we | |
1011 | enter the below if statement and this function returns early | |
1012 | which in turn triggers the calling function to assert. | |
1013 | Making the call to pim_channel_del_oif and ignoring the return code | |
1014 | fixes the issue without ill effect, similar to | |
1015 | pim_forward_stop below. | |
1016 | */ | |
1017 | result = pim_channel_del_oif(source->source_channel_oil, | |
1018 | group->group_igmp_sock->interface, | |
1019 | PIM_OIF_FLAG_PROTO_IGMP); | |
1020 | if (result) { | |
1021 | if (PIM_DEBUG_IGMP_TRACE) | |
1022 | zlog_debug( | |
1023 | "%s: pim_channel_del_oif() failed with return=%d", | |
1024 | __func__, result); | |
1025 | return; | |
1026 | } | |
1027 | ||
1028 | /* | |
1029 | Feed IGMPv3-gathered local membership information into PIM | |
1030 | per-interface (S,G) state. | |
1031 | */ | |
1032 | pim_ifchannel_local_membership_del(group->group_igmp_sock->interface, | |
1033 | &sg); | |
1034 | ||
1035 | IGMP_SOURCE_DONT_FORWARDING(source->source_flags); | |
12e41d03 DL |
1036 | } |
1037 | ||
1038 | void pim_forward_start(struct pim_ifchannel *ch) | |
1039 | { | |
d62a17ae | 1040 | struct pim_upstream *up = ch->upstream; |
1041 | uint32_t mask = PIM_OIF_FLAG_PROTO_PIM; | |
1042 | int input_iface_vif_index = 0; | |
6f932b0c DS |
1043 | struct pim_instance *pim; |
1044 | struct pim_interface *pim_ifp; | |
1045 | ||
1046 | pim_ifp = ch->interface->info; | |
1047 | pim = pim_ifp->pim; | |
d62a17ae | 1048 | |
1049 | if (PIM_DEBUG_PIM_TRACE) { | |
1050 | char source_str[INET_ADDRSTRLEN]; | |
1051 | char group_str[INET_ADDRSTRLEN]; | |
1052 | char upstream_str[INET_ADDRSTRLEN]; | |
1053 | ||
1054 | pim_inet4_dump("<source?>", ch->sg.src, source_str, | |
1055 | sizeof(source_str)); | |
1056 | pim_inet4_dump("<group?>", ch->sg.grp, group_str, | |
1057 | sizeof(group_str)); | |
1058 | pim_inet4_dump("<upstream?>", up->upstream_addr, upstream_str, | |
1059 | sizeof(upstream_str)); | |
1060 | zlog_debug("%s: (S,G)=(%s,%s) oif=%s (%s)", __PRETTY_FUNCTION__, | |
1061 | source_str, group_str, ch->interface->name, | |
732c209c | 1062 | inet_ntoa(up->upstream_addr)); |
d62a17ae | 1063 | } |
1064 | ||
1065 | /* Resolve IIF for upstream as mroute_del sets mfcc_parent to MAXVIFS, | |
1066 | as part of mroute_del called by pim_forward_stop. | |
1067 | */ | |
732c209c | 1068 | if ((up->upstream_addr.s_addr != INADDR_ANY) && (!up->channel_oil)) { |
d1a1b09c | 1069 | struct prefix src, grp; |
d62a17ae | 1070 | |
d62a17ae | 1071 | grp.family = AF_INET; |
1072 | grp.prefixlen = IPV4_MAX_BITLEN; | |
1073 | grp.u.prefix4 = up->sg.grp; | |
43763b11 DS |
1074 | src.family = AF_INET; |
1075 | src.prefixlen = IPV4_MAX_BITLEN; | |
1076 | src.u.prefix4 = up->sg.src; | |
1077 | ||
1078 | if (pim_ecmp_nexthop_lookup(pim, &up->rpf.source_nexthop, &src, | |
1079 | &grp, 0)) | |
1080 | input_iface_vif_index = pim_if_find_vifindex_by_ifindex( | |
1081 | pim, up->rpf.source_nexthop.interface->ifindex); | |
d62a17ae | 1082 | |
1083 | if (input_iface_vif_index < 1) { | |
1084 | if (PIM_DEBUG_PIM_TRACE) { | |
1085 | char source_str[INET_ADDRSTRLEN]; | |
1086 | pim_inet4_dump("<source?>", up->sg.src, | |
1087 | source_str, sizeof(source_str)); | |
1088 | zlog_debug( | |
1089 | "%s %s: could not find input interface for source %s", | |
1090 | __FILE__, __PRETTY_FUNCTION__, | |
1091 | source_str); | |
1092 | } | |
46dd6edb DS |
1093 | pim_channel_oil_change_iif(pim, up->channel_oil, |
1094 | MAXVIFS, | |
1095 | __PRETTY_FUNCTION__); | |
d62a17ae | 1096 | } |
732c209c | 1097 | |
11884868 | 1098 | else |
46dd6edb DS |
1099 | pim_channel_oil_change_iif(pim, up->channel_oil, |
1100 | input_iface_vif_index, | |
1101 | __PRETTY_FUNCTION__); | |
732c209c | 1102 | |
d62a17ae | 1103 | if (PIM_DEBUG_TRACE) { |
7cfc7bcf | 1104 | struct interface *in_intf = pim_if_find_by_vif_index( |
6f932b0c | 1105 | pim, input_iface_vif_index); |
d62a17ae | 1106 | zlog_debug( |
1107 | "%s: Update channel_oil IIF %s VIFI %d entry %s ", | |
1108 | __PRETTY_FUNCTION__, | |
732c209c | 1109 | in_intf ? in_intf->name : "Unknown", |
d62a17ae | 1110 | input_iface_vif_index, up->sg_str); |
1111 | } | |
d62a17ae | 1112 | } |
1113 | ||
1114 | if (up->flags & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
1115 | mask = PIM_OIF_FLAG_PROTO_IGMP; | |
1116 | ||
1117 | pim_channel_add_oif(up->channel_oil, ch->interface, mask); | |
12e41d03 DL |
1118 | } |
1119 | ||
aabb9a2f | 1120 | void pim_forward_stop(struct pim_ifchannel *ch, bool install_it) |
12e41d03 | 1121 | { |
d62a17ae | 1122 | struct pim_upstream *up = ch->upstream; |
12e41d03 | 1123 | |
d62a17ae | 1124 | if (PIM_DEBUG_PIM_TRACE) { |
aabb9a2f DS |
1125 | zlog_debug("%s: (S,G)=%s oif=%s install_it: %d installed: %d", |
1126 | __PRETTY_FUNCTION__, ch->sg_str, ch->interface->name, | |
1127 | install_it, up->channel_oil->installed); | |
d62a17ae | 1128 | } |
12e41d03 | 1129 | |
2164ed5d DS |
1130 | /* |
1131 | * If a channel is being removed, check to see if we still need | |
1132 | * to inherit the interface. If so make sure it is added in | |
1133 | */ | |
1134 | if (pim_upstream_evaluate_join_desired_interface(up, ch, ch->parent)) | |
1135 | pim_channel_add_oif(up->channel_oil, ch->interface, | |
1136 | PIM_OIF_FLAG_PROTO_PIM); | |
1137 | else | |
1138 | pim_channel_del_oif(up->channel_oil, ch->interface, | |
1139 | PIM_OIF_FLAG_PROTO_PIM); | |
aabb9a2f DS |
1140 | |
1141 | if (install_it && !up->channel_oil->installed) | |
1142 | pim_mroute_add(up->channel_oil, __PRETTY_FUNCTION__); | |
12e41d03 | 1143 | } |
8799b66b | 1144 | |
d62a17ae | 1145 | void pim_zebra_zclient_update(struct vty *vty) |
8799b66b | 1146 | { |
d62a17ae | 1147 | vty_out(vty, "Zclient update socket: "); |
1148 | ||
1149 | if (zclient) { | |
1150 | vty_out(vty, "%d failures=%d\n", zclient->sock, zclient->fail); | |
1151 | } else { | |
1152 | vty_out(vty, "<null zclient>\n"); | |
1153 | } | |
8799b66b | 1154 | } |
1bc98276 | 1155 | |
d62a17ae | 1156 | struct zclient *pim_zebra_zclient_get(void) |
1bc98276 | 1157 | { |
d62a17ae | 1158 | if (zclient) |
1159 | return zclient; | |
1160 | else | |
1161 | return NULL; | |
1bc98276 | 1162 | } |
ddbf3e60 DS |
1163 | |
1164 | void pim_zebra_interface_set_master(struct interface *vrf, | |
1165 | struct interface *ifp) | |
1166 | { | |
1167 | zclient_interface_set_master(zclient, vrf, ifp); | |
1168 | } |