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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" |
12e41d03 DL |
48 | |
49 | #undef PIM_DEBUG_IFADDR_DUMP | |
50 | #define PIM_DEBUG_IFADDR_DUMP | |
51 | ||
38f4935a DS |
52 | static struct zclient *zclient = NULL; |
53 | ||
12e41d03 | 54 | |
12e41d03 DL |
55 | /* Router-id update message from zebra. */ |
56 | static int pim_router_id_update_zebra(int command, struct zclient *zclient, | |
469351b3 | 57 | zebra_size_t length, vrf_id_t vrf_id) |
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 | ||
66 | static int pim_zebra_if_add(int command, struct zclient *zclient, | |
469351b3 | 67 | zebra_size_t length, vrf_id_t vrf_id) |
12e41d03 | 68 | { |
d62a17ae | 69 | struct interface *ifp; |
26bb1fd5 | 70 | struct pim_instance *pim; |
d62a17ae | 71 | |
72 | /* | |
73 | zebra api adds/dels interfaces using the same call | |
74 | interface_add_read below, see comments in lib/zclient.c | |
75 | */ | |
76 | ifp = zebra_interface_add_read(zclient->ibuf, vrf_id); | |
77 | if (!ifp) | |
78 | return 0; | |
79 | ||
26bb1fd5 | 80 | pim = pim_get_pim_instance(vrf_id); |
d62a17ae | 81 | if (PIM_DEBUG_ZEBRA) { |
82 | zlog_debug( | |
87ad28f4 | 83 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 84 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 85 | (long)ifp->flags, ifp->metric, ifp->mtu, |
86 | if_is_operative(ifp)); | |
87 | } | |
88 | ||
26bb1fd5 DS |
89 | if (if_is_operative(ifp)) { |
90 | struct pim_interface *pim_ifp; | |
91 | ||
92 | pim_ifp = ifp->info; | |
93 | /* | |
94 | * If we have a pim_ifp already and this is an if_add | |
95 | * that means that we probably have a vrf move event | |
96 | * If that is the case, set the proper vrfness. | |
97 | */ | |
98 | if (pim_ifp) | |
99 | pim_ifp->pim = pim; | |
d62a17ae | 100 | pim_if_addr_add_all(ifp); |
26bb1fd5 | 101 | } |
d62a17ae | 102 | |
90133de6 DS |
103 | /* |
104 | * If we are a vrf device that is up, open up the pim_socket for | |
105 | * listening | |
106 | * to incoming pim messages irrelevant if the user has configured us | |
107 | * for pim or not. | |
108 | */ | |
109 | if (pim_if_is_vrf_device(ifp)) { | |
110 | struct pim_interface *pim_ifp; | |
111 | ||
112 | if (!ifp->info) { | |
85a13586 | 113 | pim_ifp = pim_if_new(ifp, false, false, false); |
90133de6 DS |
114 | ifp->info = pim_ifp; |
115 | } | |
116 | ||
117 | pim_sock_add(ifp); | |
118 | } | |
119 | ||
d62a17ae | 120 | return 0; |
12e41d03 DL |
121 | } |
122 | ||
123 | static int pim_zebra_if_del(int command, struct zclient *zclient, | |
469351b3 | 124 | zebra_size_t length, vrf_id_t vrf_id) |
12e41d03 | 125 | { |
d62a17ae | 126 | struct interface *ifp; |
127 | ||
128 | /* | |
129 | zebra api adds/dels interfaces using the same call | |
130 | interface_add_read below, see comments in lib/zclient.c | |
131 | ||
132 | comments in lib/zclient.c seem to indicate that calling | |
133 | zebra_interface_add_read is the correct call, but that | |
134 | results in an attemted out of bounds read which causes | |
135 | pimd to assert. Other clients use zebra_interface_state_read | |
136 | and it appears to work just fine. | |
137 | */ | |
138 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
139 | if (!ifp) | |
140 | return 0; | |
141 | ||
142 | if (PIM_DEBUG_ZEBRA) { | |
143 | zlog_debug( | |
87ad28f4 | 144 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 145 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 146 | (long)ifp->flags, ifp->metric, ifp->mtu, |
147 | if_is_operative(ifp)); | |
148 | } | |
149 | ||
150 | if (!if_is_operative(ifp)) | |
151 | pim_if_addr_del_all(ifp); | |
152 | ||
153 | return 0; | |
12e41d03 DL |
154 | } |
155 | ||
156 | static int pim_zebra_if_state_up(int command, struct zclient *zclient, | |
469351b3 | 157 | zebra_size_t length, vrf_id_t vrf_id) |
12e41d03 | 158 | { |
26bb1fd5 | 159 | struct pim_instance *pim; |
d62a17ae | 160 | struct interface *ifp; |
e0ae31b8 | 161 | uint32_t table_id; |
d62a17ae | 162 | |
163 | /* | |
164 | zebra api notifies interface up/down events by using the same call | |
165 | zebra_interface_state_read below, see comments in lib/zclient.c | |
166 | */ | |
167 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
168 | if (!ifp) | |
169 | return 0; | |
170 | ||
171 | if (PIM_DEBUG_ZEBRA) { | |
172 | zlog_debug( | |
87ad28f4 | 173 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 174 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 175 | (long)ifp->flags, ifp->metric, ifp->mtu, |
176 | if_is_operative(ifp)); | |
177 | } | |
178 | ||
26bb1fd5 | 179 | pim = pim_get_pim_instance(vrf_id); |
d62a17ae | 180 | if (if_is_operative(ifp)) { |
26bb1fd5 DS |
181 | struct pim_interface *pim_ifp; |
182 | ||
183 | pim_ifp = ifp->info; | |
184 | /* | |
185 | * If we have a pim_ifp already and this is an if_add | |
186 | * that means that we probably have a vrf move event | |
187 | * If that is the case, set the proper vrfness. | |
188 | */ | |
189 | if (pim_ifp) | |
190 | pim_ifp->pim = pim; | |
191 | ||
d62a17ae | 192 | /* |
193 | pim_if_addr_add_all() suffices for bringing up both IGMP and | |
194 | PIM | |
195 | */ | |
196 | pim_if_addr_add_all(ifp); | |
197 | } | |
198 | ||
e0ae31b8 DS |
199 | /* |
200 | * If we have a pimreg device callback and it's for a specific | |
201 | * table set the master appropriately | |
202 | */ | |
0651460e | 203 | if (sscanf(ifp->name, "pimreg%" SCNu32, &table_id) == 1) { |
e0ae31b8 | 204 | struct vrf *vrf; |
a2addae8 | 205 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
e0ae31b8 DS |
206 | if ((table_id == vrf->data.l.table_id) |
207 | && (ifp->vrf_id != vrf->vrf_id)) { | |
208 | struct interface *master = if_lookup_by_name( | |
209 | vrf->name, vrf->vrf_id); | |
e691f179 DS |
210 | |
211 | if (!master) { | |
996c9314 LB |
212 | zlog_debug( |
213 | "%s: Unable to find Master interface for %s", | |
214 | __PRETTY_FUNCTION__, vrf->name); | |
e691f179 DS |
215 | return 0; |
216 | } | |
e0ae31b8 DS |
217 | zclient_interface_set_master(zclient, master, |
218 | ifp); | |
219 | } | |
220 | } | |
221 | } | |
d62a17ae | 222 | return 0; |
12e41d03 DL |
223 | } |
224 | ||
225 | static int pim_zebra_if_state_down(int command, struct zclient *zclient, | |
469351b3 | 226 | zebra_size_t length, vrf_id_t vrf_id) |
12e41d03 | 227 | { |
d62a17ae | 228 | struct interface *ifp; |
229 | ||
230 | /* | |
231 | zebra api notifies interface up/down events by using the same call | |
232 | zebra_interface_state_read below, see comments in lib/zclient.c | |
233 | */ | |
234 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
235 | if (!ifp) | |
236 | return 0; | |
237 | ||
238 | if (PIM_DEBUG_ZEBRA) { | |
239 | zlog_debug( | |
87ad28f4 | 240 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 241 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 242 | (long)ifp->flags, ifp->metric, ifp->mtu, |
243 | if_is_operative(ifp)); | |
244 | } | |
245 | ||
246 | if (!if_is_operative(ifp)) { | |
247 | pim_ifchannel_delete_all(ifp); | |
248 | /* | |
249 | pim_if_addr_del_all() suffices for shutting down IGMP, | |
250 | but not for shutting down PIM | |
251 | */ | |
252 | pim_if_addr_del_all(ifp); | |
253 | ||
254 | /* | |
255 | pim_sock_delete() closes the socket, stops read and timer | |
256 | threads, | |
257 | and kills all neighbors. | |
258 | */ | |
259 | if (ifp->info) { | |
260 | pim_sock_delete(ifp, "link down"); | |
261 | } | |
262 | } | |
263 | ||
264 | if (ifp->info) | |
265 | pim_if_del_vif(ifp); | |
266 | ||
267 | return 0; | |
12e41d03 DL |
268 | } |
269 | ||
ee568318 DS |
270 | static int pim_zebra_interface_vrf_update(int command, struct zclient *zclient, |
271 | zebra_size_t length, vrf_id_t vrf_id) | |
272 | { | |
273 | struct interface *ifp; | |
274 | vrf_id_t new_vrf_id; | |
275 | ||
276 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
277 | &new_vrf_id); | |
278 | if (!ifp) | |
279 | return 0; | |
280 | ||
281 | if (PIM_DEBUG_ZEBRA) | |
282 | zlog_debug("%s: %s updating from %u to %u", | |
283 | __PRETTY_FUNCTION__, | |
284 | ifp->name, vrf_id, new_vrf_id); | |
285 | ||
286 | if_update_to_new_vrf(ifp, new_vrf_id); | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
12e41d03 DL |
291 | #ifdef PIM_DEBUG_IFADDR_DUMP |
292 | static void dump_if_address(struct interface *ifp) | |
293 | { | |
d62a17ae | 294 | struct connected *ifc; |
295 | struct listnode *node; | |
296 | ||
297 | zlog_debug("%s %s: interface %s addresses:", __FILE__, | |
298 | __PRETTY_FUNCTION__, ifp->name); | |
299 | ||
300 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
301 | struct prefix *p = ifc->address; | |
302 | ||
303 | if (p->family != AF_INET) | |
304 | continue; | |
305 | ||
306 | zlog_debug("%s %s: interface %s address %s %s", __FILE__, | |
307 | __PRETTY_FUNCTION__, ifp->name, | |
308 | inet_ntoa(p->u.prefix4), | |
309 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
310 | ? "secondary" | |
311 | : "primary"); | |
312 | } | |
12e41d03 DL |
313 | } |
314 | #endif | |
315 | ||
316 | static int pim_zebra_if_address_add(int command, struct zclient *zclient, | |
469351b3 | 317 | zebra_size_t length, vrf_id_t vrf_id) |
12e41d03 | 318 | { |
d62a17ae | 319 | struct connected *c; |
320 | struct prefix *p; | |
321 | struct pim_interface *pim_ifp; | |
26bb1fd5 | 322 | struct pim_instance *pim; |
d62a17ae | 323 | |
324 | /* | |
325 | zebra api notifies address adds/dels events by using the same call | |
326 | interface_add_read below, see comments in lib/zclient.c | |
327 | ||
328 | zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, ...) | |
329 | will add address to interface list by calling | |
330 | connected_add_by_prefix() | |
331 | */ | |
332 | c = zebra_interface_address_read(command, zclient->ibuf, vrf_id); | |
333 | if (!c) | |
334 | return 0; | |
335 | ||
336 | pim_ifp = c->ifp->info; | |
337 | p = c->address; | |
338 | ||
339 | if (PIM_DEBUG_ZEBRA) { | |
340 | char buf[BUFSIZ]; | |
341 | prefix2str(p, buf, BUFSIZ); | |
87ad28f4 | 342 | zlog_debug("%s: %s(%u) connected IP address %s flags %u %s", |
e0ae31b8 | 343 | __PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf, |
996c9314 LB |
344 | c->flags, |
345 | CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) | |
346 | ? "secondary" | |
347 | : "primary"); | |
d62a17ae | 348 | |
12e41d03 | 349 | #ifdef PIM_DEBUG_IFADDR_DUMP |
d62a17ae | 350 | dump_if_address(c->ifp); |
12e41d03 | 351 | #endif |
d62a17ae | 352 | } |
12e41d03 | 353 | |
d62a17ae | 354 | if (!CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)) { |
355 | /* trying to add primary address */ | |
12e41d03 | 356 | |
d62a17ae | 357 | struct in_addr primary_addr = pim_find_primary_addr(c->ifp); |
358 | if (p->family != AF_INET | |
359 | || primary_addr.s_addr != p->u.prefix4.s_addr) { | |
360 | if (PIM_DEBUG_ZEBRA) { | |
361 | /* but we had a primary address already */ | |
12e41d03 | 362 | |
d62a17ae | 363 | char buf[BUFSIZ]; |
12e41d03 | 364 | |
d62a17ae | 365 | prefix2str(p, buf, BUFSIZ); |
12e41d03 | 366 | |
d62a17ae | 367 | zlog_warn( |
368 | "%s: %s : forcing secondary flag on %s", | |
369 | __PRETTY_FUNCTION__, c->ifp->name, buf); | |
370 | } | |
371 | SET_FLAG(c->flags, ZEBRA_IFA_SECONDARY); | |
372 | } | |
373 | } | |
12e41d03 | 374 | |
d62a17ae | 375 | pim_if_addr_add(c); |
26bb1fd5 DS |
376 | if (pim_ifp) { |
377 | pim = pim_get_pim_instance(vrf_id); | |
378 | pim_ifp->pim = pim; | |
379 | ||
d62a17ae | 380 | pim_rp_check_on_if_add(pim_ifp); |
26bb1fd5 | 381 | } |
12e41d03 | 382 | |
d62a17ae | 383 | if (if_is_loopback(c->ifp)) { |
f4e14fdb | 384 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 385 | struct interface *ifp; |
d8424057 | 386 | |
451fda4f | 387 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 388 | if (!if_is_loopback(ifp) && if_is_operative(ifp)) |
389 | pim_if_addr_add_all(ifp); | |
390 | } | |
391 | } | |
d8424057 | 392 | |
d62a17ae | 393 | return 0; |
12e41d03 DL |
394 | } |
395 | ||
396 | static int pim_zebra_if_address_del(int command, struct zclient *client, | |
469351b3 | 397 | zebra_size_t length, vrf_id_t vrf_id) |
12e41d03 | 398 | { |
d62a17ae | 399 | struct connected *c; |
400 | struct prefix *p; | |
fec883d9 | 401 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
819f099b DS |
402 | struct pim_instance *pim; |
403 | ||
404 | if (!vrf) | |
405 | return 0; | |
406 | pim = vrf->info; | |
d62a17ae | 407 | |
408 | /* | |
409 | zebra api notifies address adds/dels events by using the same call | |
410 | interface_add_read below, see comments in lib/zclient.c | |
411 | ||
412 | zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, ...) | |
413 | will remove address from interface list by calling | |
414 | connected_delete_by_prefix() | |
415 | */ | |
416 | c = zebra_interface_address_read(command, client->ibuf, vrf_id); | |
417 | if (!c) | |
418 | return 0; | |
419 | ||
420 | p = c->address; | |
421 | if (p->family == AF_INET) { | |
422 | if (PIM_DEBUG_ZEBRA) { | |
423 | char buf[BUFSIZ]; | |
424 | prefix2str(p, buf, BUFSIZ); | |
425 | zlog_debug( | |
87ad28f4 | 426 | "%s: %s(%u) disconnected IP address %s flags %u %s", |
e0ae31b8 | 427 | __PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf, |
d62a17ae | 428 | c->flags, |
429 | CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) | |
430 | ? "secondary" | |
431 | : "primary"); | |
6233f087 | 432 | |
12e41d03 | 433 | #ifdef PIM_DEBUG_IFADDR_DUMP |
d62a17ae | 434 | dump_if_address(c->ifp); |
12e41d03 | 435 | #endif |
d62a17ae | 436 | } |
12e41d03 | 437 | |
d62a17ae | 438 | pim_if_addr_del(c, 0); |
fec883d9 DS |
439 | pim_rp_setup(pim); |
440 | pim_i_am_rp_re_evaluate(pim); | |
d62a17ae | 441 | } |
6233f087 | 442 | |
d62a17ae | 443 | connected_free(c); |
444 | return 0; | |
12e41d03 DL |
445 | } |
446 | ||
74389231 DS |
447 | void pim_zebra_update_all_interfaces(struct pim_instance *pim) |
448 | { | |
449 | struct interface *ifp; | |
450 | ||
451 | FOR_ALL_INTERFACES (pim->vrf, ifp) { | |
452 | struct pim_interface *pim_ifp = ifp->info; | |
453 | struct pim_iface_upstream_switch *us; | |
454 | struct listnode *node; | |
455 | ||
456 | if (!pim_ifp) | |
457 | continue; | |
458 | ||
459 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->upstream_switch_list, node, | |
460 | us)) { | |
461 | struct pim_rpf rpf; | |
462 | ||
463 | rpf.source_nexthop.interface = ifp; | |
464 | rpf.rpf_addr.u.prefix4 = us->address; | |
465 | pim_joinprune_send(&rpf, us->us); | |
466 | pim_jp_agg_clear_group(us->us); | |
467 | } | |
468 | } | |
469 | } | |
470 | ||
cc67ccf9 DS |
471 | void pim_zebra_upstream_rpf_changed(struct pim_instance *pim, |
472 | struct pim_upstream *up, | |
473 | struct pim_rpf *old) | |
474 | { | |
475 | struct pim_neighbor *nbr; | |
476 | ||
477 | nbr = pim_neighbor_find(old->source_nexthop.interface, | |
478 | old->rpf_addr.u.prefix4); | |
479 | if (nbr) | |
480 | pim_jp_agg_remove_group(nbr->upstream_jp_agg, up); | |
481 | ||
482 | /* | |
483 | * We have detected a case where we might need | |
484 | * to rescan the inherited o_list so do it. | |
485 | */ | |
486 | if (up->channel_oil->oil_inherited_rescan) { | |
487 | pim_upstream_inherited_olist_decide(pim, up); | |
488 | up->channel_oil->oil_inherited_rescan = 0; | |
489 | } | |
490 | ||
491 | if (up->join_state == PIM_UPSTREAM_JOINED) { | |
492 | /* | |
493 | * If we come up real fast we can be here | |
494 | * where the mroute has not been installed | |
495 | * so install it. | |
496 | */ | |
497 | if (!up->channel_oil->installed) | |
498 | pim_mroute_add(up->channel_oil, __PRETTY_FUNCTION__); | |
499 | ||
500 | /* | |
501 | * RFC 4601: 4.5.7. Sending (S,G) | |
502 | * Join/Prune Messages | |
503 | * | |
504 | * Transitions from Joined State | |
505 | * | |
506 | * RPF'(S,G) changes not due to an Assert | |
507 | * | |
508 | * The upstream (S,G) state machine remains | |
509 | * in Joined state. Send Join(S,G) to the new | |
510 | * upstream neighbor, which is the new value | |
511 | * of RPF'(S,G). Send Prune(S,G) to the old | |
512 | * upstream neighbor, which is the old value | |
513 | * of RPF'(S,G). Set the Join Timer (JT) to | |
514 | * expire after t_periodic seconds. | |
515 | */ | |
516 | pim_jp_agg_switch_interface(old, &up->rpf, up); | |
517 | ||
518 | pim_upstream_join_timer_restart(up, old); | |
519 | } /* up->join_state == PIM_UPSTREAM_JOINED */ | |
520 | ||
521 | /* FIXME can join_desired actually be changed by | |
522 | pim_rpf_update() | |
523 | returning PIM_RPF_CHANGED ? */ | |
524 | pim_upstream_update_join_desired(pim, up); | |
525 | } | |
526 | ||
da11e325 | 527 | static void scan_upstream_rpf_cache(struct pim_instance *pim) |
12e41d03 | 528 | { |
d62a17ae | 529 | struct listnode *up_node; |
d62a17ae | 530 | struct listnode *up_nextnode; |
d62a17ae | 531 | struct pim_upstream *up; |
d62a17ae | 532 | |
da11e325 DS |
533 | for (ALL_LIST_ELEMENTS(pim->upstream_list, up_node, up_nextnode, up)) { |
534 | enum pim_rpf_result rpf_result; | |
535 | struct pim_rpf old; | |
536 | struct prefix nht_p; | |
d62a17ae | 537 | |
957d93ea SP |
538 | if (up->upstream_addr.s_addr == INADDR_ANY) { |
539 | if (PIM_DEBUG_TRACE) | |
540 | zlog_debug( | |
541 | "%s: RP not configured for Upstream %s", | |
542 | __PRETTY_FUNCTION__, up->sg_str); | |
543 | continue; | |
544 | } | |
545 | ||
da11e325 DS |
546 | nht_p.family = AF_INET; |
547 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
548 | nht_p.u.prefix4.s_addr = up->upstream_addr.s_addr; | |
549 | pim_resolve_upstream_nh(pim, &nht_p); | |
d62a17ae | 550 | |
da11e325 DS |
551 | old.source_nexthop.interface = up->rpf.source_nexthop.interface; |
552 | old.source_nexthop.nbr = up->rpf.source_nexthop.nbr; | |
553 | rpf_result = pim_rpf_update(pim, up, &old, 0); | |
d62a17ae | 554 | |
da11e325 DS |
555 | if (rpf_result == PIM_RPF_FAILURE) |
556 | continue; | |
d62a17ae | 557 | |
cc67ccf9 DS |
558 | if (rpf_result == PIM_RPF_CHANGED) |
559 | pim_zebra_upstream_rpf_changed(pim, up, &old); | |
da11e325 DS |
560 | |
561 | } /* for (qpim_upstream_list) */ | |
562 | ||
74389231 | 563 | pim_zebra_update_all_interfaces(pim); |
12e41d03 DL |
564 | } |
565 | ||
d62a17ae | 566 | void pim_scan_individual_oil(struct channel_oil *c_oil, int in_vif_index) |
12e41d03 | 567 | { |
d62a17ae | 568 | struct in_addr vif_source; |
569 | int input_iface_vif_index; | |
570 | int old_vif_index; | |
571 | ||
732c209c | 572 | pim_rp_set_upstream_addr(c_oil->pim, &vif_source, |
d9c9a9ee | 573 | c_oil->oil.mfcc_origin, |
732c209c | 574 | c_oil->oil.mfcc_mcastgrp); |
d62a17ae | 575 | |
576 | if (in_vif_index) | |
577 | input_iface_vif_index = in_vif_index; | |
578 | else { | |
579 | struct prefix src, grp; | |
580 | ||
581 | src.family = AF_INET; | |
582 | src.prefixlen = IPV4_MAX_BITLEN; | |
583 | src.u.prefix4 = vif_source; | |
584 | grp.family = AF_INET; | |
585 | grp.prefixlen = IPV4_MAX_BITLEN; | |
586 | grp.u.prefix4 = c_oil->oil.mfcc_mcastgrp; | |
587 | ||
588 | if (PIM_DEBUG_ZEBRA) { | |
589 | char source_str[INET_ADDRSTRLEN]; | |
590 | char group_str[INET_ADDRSTRLEN]; | |
591 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
592 | source_str, sizeof(source_str)); | |
593 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
594 | group_str, sizeof(group_str)); | |
595 | zlog_debug( | |
a895ac30 | 596 | "%s: channel_oil (%s,%s) upstream info is not present.", |
d62a17ae | 597 | __PRETTY_FUNCTION__, source_str, group_str); |
598 | } | |
599 | input_iface_vif_index = pim_ecmp_fib_lookup_if_vif_index( | |
b938537b | 600 | c_oil->pim, &src, &grp); |
d62a17ae | 601 | } |
602 | ||
603 | if (input_iface_vif_index < 1) { | |
604 | if (PIM_DEBUG_ZEBRA) { | |
605 | char source_str[INET_ADDRSTRLEN]; | |
606 | char group_str[INET_ADDRSTRLEN]; | |
607 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
608 | source_str, sizeof(source_str)); | |
609 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
610 | group_str, sizeof(group_str)); | |
611 | zlog_debug( | |
612 | "%s %s: could not find input interface(%d) for (S,G)=(%s,%s)", | |
613 | __FILE__, __PRETTY_FUNCTION__, | |
614 | c_oil->oil.mfcc_parent, source_str, group_str); | |
615 | } | |
616 | pim_mroute_del(c_oil, __PRETTY_FUNCTION__); | |
617 | return; | |
618 | } | |
619 | ||
620 | if (input_iface_vif_index == c_oil->oil.mfcc_parent) { | |
621 | if (!c_oil->installed) | |
622 | pim_mroute_add(c_oil, __PRETTY_FUNCTION__); | |
623 | ||
624 | /* RPF unchanged */ | |
625 | return; | |
626 | } | |
627 | ||
628 | if (PIM_DEBUG_ZEBRA) { | |
7cfc7bcf DS |
629 | struct interface *old_iif = pim_if_find_by_vif_index( |
630 | c_oil->pim, c_oil->oil.mfcc_parent); | |
631 | struct interface *new_iif = pim_if_find_by_vif_index( | |
632 | c_oil->pim, input_iface_vif_index); | |
d62a17ae | 633 | char source_str[INET_ADDRSTRLEN]; |
634 | char group_str[INET_ADDRSTRLEN]; | |
635 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, | |
636 | sizeof(source_str)); | |
637 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, | |
638 | sizeof(group_str)); | |
639 | zlog_debug( | |
640 | "%s %s: (S,G)=(%s,%s) input interface changed from %s vif_index=%d to %s vif_index=%d", | |
641 | __FILE__, __PRETTY_FUNCTION__, source_str, group_str, | |
97f03dde DS |
642 | (old_iif) ? old_iif->name : "<old_iif?>", |
643 | c_oil->oil.mfcc_parent, | |
644 | (new_iif) ? new_iif->name : "<new_iif?>", | |
d62a17ae | 645 | input_iface_vif_index); |
646 | } | |
647 | ||
648 | /* new iif loops to existing oif ? */ | |
649 | if (c_oil->oil.mfcc_ttls[input_iface_vif_index]) { | |
7cfc7bcf DS |
650 | struct interface *new_iif = pim_if_find_by_vif_index( |
651 | c_oil->pim, input_iface_vif_index); | |
d62a17ae | 652 | |
653 | if (PIM_DEBUG_ZEBRA) { | |
654 | char source_str[INET_ADDRSTRLEN]; | |
655 | char group_str[INET_ADDRSTRLEN]; | |
656 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
657 | source_str, sizeof(source_str)); | |
658 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
659 | group_str, sizeof(group_str)); | |
660 | zlog_debug( | |
661 | "%s %s: (S,G)=(%s,%s) new iif loops to existing oif: %s vif_index=%d", | |
662 | __FILE__, __PRETTY_FUNCTION__, source_str, | |
97f03dde DS |
663 | group_str, |
664 | (new_iif) ? new_iif->name : "<new_iif?>", | |
d62a17ae | 665 | input_iface_vif_index); |
666 | } | |
667 | } | |
668 | ||
669 | /* update iif vif_index */ | |
670 | old_vif_index = c_oil->oil.mfcc_parent; | |
671 | c_oil->oil.mfcc_parent = input_iface_vif_index; | |
672 | ||
673 | /* update kernel multicast forwarding cache (MFC) */ | |
674 | if (pim_mroute_add(c_oil, __PRETTY_FUNCTION__)) { | |
675 | if (PIM_DEBUG_MROUTE) { | |
676 | /* just log warning */ | |
7cfc7bcf DS |
677 | struct interface *old_iif = pim_if_find_by_vif_index( |
678 | c_oil->pim, old_vif_index); | |
679 | struct interface *new_iif = pim_if_find_by_vif_index( | |
680 | c_oil->pim, input_iface_vif_index); | |
d62a17ae | 681 | char source_str[INET_ADDRSTRLEN]; |
682 | char group_str[INET_ADDRSTRLEN]; | |
683 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
684 | source_str, sizeof(source_str)); | |
685 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
686 | group_str, sizeof(group_str)); | |
687 | zlog_debug( | |
688 | "%s %s: (S,G)=(%s,%s) failure updating input interface from %s vif_index=%d to %s vif_index=%d", | |
689 | __FILE__, __PRETTY_FUNCTION__, source_str, | |
690 | group_str, | |
691 | old_iif ? old_iif->name : "<old_iif?>", | |
692 | c_oil->oil.mfcc_parent, | |
693 | new_iif ? new_iif->name : "<new_iif?>", | |
694 | input_iface_vif_index); | |
695 | } | |
696 | } | |
8a67a996 DS |
697 | } |
698 | ||
da11e325 | 699 | void pim_scan_oil(struct pim_instance *pim) |
8a67a996 | 700 | { |
d62a17ae | 701 | struct listnode *node; |
702 | struct listnode *nextnode; | |
703 | struct channel_oil *c_oil; | |
704 | ifindex_t ifindex; | |
705 | int vif_index = 0; | |
706 | ||
bfc92019 DS |
707 | pim->scan_oil_last = pim_time_monotonic_sec(); |
708 | ++pim->scan_oil_events; | |
d62a17ae | 709 | |
da11e325 DS |
710 | for (ALL_LIST_ELEMENTS(pim->channel_oil_list, node, nextnode, c_oil)) { |
711 | if (c_oil->up && c_oil->up->rpf.source_nexthop.interface) { | |
712 | ifindex = c_oil->up->rpf.source_nexthop | |
713 | .interface->ifindex; | |
714 | vif_index = | |
715 | pim_if_find_vifindex_by_ifindex(pim, ifindex); | |
716 | /* Pass Current selected NH vif index to mroute | |
717 | * download */ | |
718 | if (vif_index) | |
719 | pim_scan_individual_oil(c_oil, vif_index); | |
720 | } else | |
721 | pim_scan_individual_oil(c_oil, 0); | |
d62a17ae | 722 | } |
12e41d03 DL |
723 | } |
724 | ||
725 | static int on_rpf_cache_refresh(struct thread *t) | |
726 | { | |
da11e325 DS |
727 | struct pim_instance *pim = THREAD_ARG(t); |
728 | ||
d62a17ae | 729 | /* update PIM protocol state */ |
da11e325 | 730 | scan_upstream_rpf_cache(pim); |
12e41d03 | 731 | |
d62a17ae | 732 | /* update kernel multicast forwarding cache (MFC) */ |
da11e325 | 733 | pim_scan_oil(pim); |
12e41d03 | 734 | |
bfc92019 DS |
735 | pim->rpf_cache_refresh_last = pim_time_monotonic_sec(); |
736 | ++pim->rpf_cache_refresh_events; | |
12e41d03 | 737 | |
d62a17ae | 738 | // It is called as part of pim_neighbor_add |
739 | // pim_rp_setup (); | |
740 | return 0; | |
12e41d03 DL |
741 | } |
742 | ||
da11e325 | 743 | void sched_rpf_cache_refresh(struct pim_instance *pim) |
12e41d03 | 744 | { |
bfc92019 | 745 | ++pim->rpf_cache_refresh_requests; |
12e41d03 | 746 | |
bfc92019 | 747 | pim_rpf_set_refresh_time(pim); |
e71bf8f7 | 748 | |
da11e325 | 749 | if (pim->rpf_cache_refresher) { |
d62a17ae | 750 | /* Refresh timer is already running */ |
751 | return; | |
752 | } | |
12e41d03 | 753 | |
d62a17ae | 754 | /* Start refresh timer */ |
12e41d03 | 755 | |
d62a17ae | 756 | if (PIM_DEBUG_ZEBRA) { |
757 | zlog_debug("%s: triggering %ld msec timer", __PRETTY_FUNCTION__, | |
da03883e | 758 | router->rpf_cache_refresh_delay_msec); |
d62a17ae | 759 | } |
12e41d03 | 760 | |
36417fcc | 761 | thread_add_timer_msec(router->master, on_rpf_cache_refresh, pim, |
da03883e | 762 | router->rpf_cache_refresh_delay_msec, |
da11e325 | 763 | &pim->rpf_cache_refresher); |
12e41d03 DL |
764 | } |
765 | ||
d62a17ae | 766 | static void pim_zebra_connected(struct zclient *zclient) |
48e8451b | 767 | { |
d62a17ae | 768 | /* Send the client registration */ |
769 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER); | |
ba4eb1bc | 770 | |
4dfe9ad2 | 771 | zclient_send_reg_requests(zclient, router->vrf_id); |
48e8451b | 772 | } |
8711a53d | 773 | |
ac567a6f DS |
774 | static void pim_zebra_capabilities(struct zclient_capabilities *cap) |
775 | { | |
d6749d74 | 776 | router->role = cap->role; |
ac567a6f DS |
777 | } |
778 | ||
eb05883f | 779 | void pim_zebra_init(void) |
12e41d03 | 780 | { |
d62a17ae | 781 | /* Socket for receiving updates from Zebra daemon */ |
36417fcc | 782 | zclient = zclient_new(router->master, &zclient_options_default); |
d62a17ae | 783 | |
ac567a6f | 784 | zclient->zebra_capabilities = pim_zebra_capabilities; |
d62a17ae | 785 | zclient->zebra_connected = pim_zebra_connected; |
786 | zclient->router_id_update = pim_router_id_update_zebra; | |
787 | zclient->interface_add = pim_zebra_if_add; | |
788 | zclient->interface_delete = pim_zebra_if_del; | |
789 | zclient->interface_up = pim_zebra_if_state_up; | |
790 | zclient->interface_down = pim_zebra_if_state_down; | |
791 | zclient->interface_address_add = pim_zebra_if_address_add; | |
792 | zclient->interface_address_delete = pim_zebra_if_address_del; | |
ee568318 | 793 | zclient->interface_vrf_update = pim_zebra_interface_vrf_update; |
d62a17ae | 794 | zclient->nexthop_update = pim_parse_nexthop_update; |
795 | ||
342213ea | 796 | zclient_init(zclient, ZEBRA_ROUTE_PIM, 0, &pimd_privs); |
d62a17ae | 797 | if (PIM_DEBUG_PIM_TRACE) { |
87270023 | 798 | zlog_notice("%s: zclient socket initialized", |
d62a17ae | 799 | __PRETTY_FUNCTION__); |
800 | } | |
801 | ||
802 | zclient_lookup_new(); | |
12e41d03 DL |
803 | } |
804 | ||
6f932b0c DS |
805 | void igmp_anysource_forward_start(struct pim_instance *pim, |
806 | struct igmp_group *group) | |
12e41d03 | 807 | { |
d62a17ae | 808 | struct igmp_source *source; |
809 | struct in_addr src_addr = {.s_addr = 0}; | |
810 | /* Any source (*,G) is forwarded only if mode is EXCLUDE {empty} */ | |
811 | zassert(group->group_filtermode_isexcl); | |
812 | zassert(listcount(group->group_source_list) < 1); | |
813 | ||
814 | source = source_new(group, src_addr); | |
815 | if (!source) { | |
816 | zlog_warn("%s: Failure to create * source", | |
817 | __PRETTY_FUNCTION__); | |
818 | return; | |
819 | } | |
820 | ||
6f932b0c | 821 | igmp_source_forward_start(pim, source); |
12e41d03 DL |
822 | } |
823 | ||
824 | void igmp_anysource_forward_stop(struct igmp_group *group) | |
825 | { | |
d62a17ae | 826 | struct igmp_source *source; |
827 | struct in_addr star = {.s_addr = 0}; | |
12e41d03 | 828 | |
d62a17ae | 829 | source = igmp_find_source_by_addr(group, star); |
830 | if (source) | |
831 | igmp_source_forward_stop(source); | |
12e41d03 DL |
832 | } |
833 | ||
6f439a70 DS |
834 | static void igmp_source_forward_reevaluate_one(struct pim_instance *pim, |
835 | struct igmp_source *source) | |
15a5dafe | 836 | { |
d62a17ae | 837 | struct prefix_sg sg; |
838 | struct igmp_group *group = source->source_group; | |
839 | struct pim_ifchannel *ch; | |
840 | ||
841 | if ((source->source_addr.s_addr != INADDR_ANY) | |
842 | || !IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) | |
843 | return; | |
844 | ||
845 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
846 | sg.src = source->source_addr; | |
847 | sg.grp = group->group_addr; | |
848 | ||
849 | ch = pim_ifchannel_find(group->group_igmp_sock->interface, &sg); | |
6f439a70 | 850 | if (pim_is_grp_ssm(pim, group->group_addr)) { |
d62a17ae | 851 | /* If SSM group withdraw local membership */ |
852 | if (ch | |
853 | && (ch->local_ifmembership == PIM_IFMEMBERSHIP_INCLUDE)) { | |
854 | if (PIM_DEBUG_PIM_EVENTS) | |
855 | zlog_debug( | |
856 | "local membership del for %s as G is now SSM", | |
857 | pim_str_sg_dump(&sg)); | |
858 | pim_ifchannel_local_membership_del( | |
859 | group->group_igmp_sock->interface, &sg); | |
860 | } | |
861 | } else { | |
862 | /* If ASM group add local membership */ | |
863 | if (!ch | |
864 | || (ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO)) { | |
865 | if (PIM_DEBUG_PIM_EVENTS) | |
866 | zlog_debug( | |
867 | "local membership add for %s as G is now ASM", | |
868 | pim_str_sg_dump(&sg)); | |
869 | pim_ifchannel_local_membership_add( | |
870 | group->group_igmp_sock->interface, &sg); | |
871 | } | |
872 | } | |
15a5dafe | 873 | } |
874 | ||
5d59e408 | 875 | void igmp_source_forward_reevaluate_all(struct pim_instance *pim) |
15a5dafe | 876 | { |
d62a17ae | 877 | struct interface *ifp; |
878 | ||
5d59e408 DS |
879 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
880 | struct pim_interface *pim_ifp = ifp->info; | |
881 | struct listnode *sock_node; | |
882 | struct igmp_sock *igmp; | |
883 | ||
884 | if (!pim_ifp) | |
d62a17ae | 885 | continue; |
886 | ||
5d59e408 DS |
887 | /* scan igmp sockets */ |
888 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, | |
889 | igmp)) { | |
890 | struct listnode *grpnode; | |
891 | struct igmp_group *grp; | |
892 | ||
893 | /* scan igmp groups */ | |
894 | for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, | |
895 | grpnode, grp)) { | |
896 | struct listnode *srcnode; | |
897 | struct igmp_source *src; | |
898 | ||
899 | /* scan group sources */ | |
900 | for (ALL_LIST_ELEMENTS_RO( | |
901 | grp->group_source_list, srcnode, | |
902 | src)) { | |
903 | igmp_source_forward_reevaluate_one(pim, | |
904 | src); | |
905 | } /* scan group sources */ | |
906 | } /* scan igmp groups */ | |
907 | } /* scan igmp sockets */ | |
908 | } /* scan interfaces */ | |
15a5dafe | 909 | } |
910 | ||
6f932b0c DS |
911 | void igmp_source_forward_start(struct pim_instance *pim, |
912 | struct igmp_source *source) | |
12e41d03 | 913 | { |
75c61a18 | 914 | struct pim_interface *pim_oif; |
d62a17ae | 915 | struct igmp_group *group; |
916 | struct prefix_sg sg; | |
917 | int result; | |
918 | int input_iface_vif_index = 0; | |
919 | ||
920 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
921 | sg.src = source->source_addr; | |
922 | sg.grp = source->source_group->group_addr; | |
923 | ||
924 | if (PIM_DEBUG_IGMP_TRACE) { | |
925 | zlog_debug( | |
926 | "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d", | |
927 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
928 | source->source_group->group_igmp_sock->fd, | |
929 | source->source_group->group_igmp_sock->interface->name, | |
930 | IGMP_SOURCE_TEST_FORWARDING(source->source_flags)); | |
931 | } | |
932 | ||
933 | /* Prevent IGMP interface from installing multicast route multiple | |
934 | times */ | |
935 | if (IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) { | |
936 | return; | |
8711a53d | 937 | } |
d62a17ae | 938 | |
939 | group = source->source_group; | |
75c61a18 DS |
940 | pim_oif = group->group_igmp_sock->interface->info; |
941 | if (!pim_oif) { | |
942 | if (PIM_DEBUG_IGMP_TRACE) { | |
943 | zlog_debug( | |
944 | "%s: multicast not enabled on oif=%s ?", | |
945 | __PRETTY_FUNCTION__, | |
946 | source->source_group->group_igmp_sock | |
947 | ->interface->name); | |
948 | } | |
949 | return; | |
950 | } | |
d62a17ae | 951 | |
952 | if (!source->source_channel_oil) { | |
953 | struct in_addr vif_source; | |
d62a17ae | 954 | struct prefix nht_p, src, grp; |
d62a17ae | 955 | struct pim_nexthop_cache out_pnc; |
956 | struct pim_nexthop nexthop; | |
957 | struct pim_upstream *up = NULL; | |
958 | ||
6f932b0c | 959 | if (!pim_rp_set_upstream_addr(pim, &vif_source, |
732c209c SP |
960 | source->source_addr, sg.grp)) { |
961 | /*Create a dummy channel oil */ | |
962 | source->source_channel_oil = | |
963 | pim_channel_oil_add(pim, &sg, MAXVIFS); | |
d62a17ae | 964 | |
732c209c SP |
965 | if (!source->source_channel_oil) { |
966 | if (PIM_DEBUG_IGMP_TRACE) { | |
967 | zlog_debug( | |
968 | "%s %s: could not create OIL for channel (S,G)=%s", | |
969 | __FILE__, __PRETTY_FUNCTION__, | |
970 | pim_str_sg_dump(&sg)); | |
971 | } | |
972 | return; | |
973 | } | |
974 | } | |
d62a17ae | 975 | |
732c209c SP |
976 | else { |
977 | /* Register addr with Zebra NHT */ | |
978 | nht_p.family = AF_INET; | |
979 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
980 | nht_p.u.prefix4 = vif_source; | |
981 | memset(&out_pnc, 0, sizeof(struct pim_nexthop_cache)); | |
982 | ||
983 | src.family = AF_INET; | |
984 | src.prefixlen = IPV4_MAX_BITLEN; | |
985 | src.u.prefix4 = vif_source; // RP or Src address | |
986 | grp.family = AF_INET; | |
987 | grp.prefixlen = IPV4_MAX_BITLEN; | |
988 | grp.u.prefix4 = sg.grp; | |
989 | ||
990 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, NULL, | |
25bdac42 | 991 | &out_pnc)) { |
732c209c SP |
992 | if (out_pnc.nexthop_num) { |
993 | up = pim_upstream_find(pim, &sg); | |
994 | memset(&nexthop, 0, sizeof(nexthop)); | |
995 | if (up) | |
996 | memcpy(&nexthop, | |
997 | &up->rpf.source_nexthop, | |
998 | sizeof(struct pim_nexthop)); | |
999 | pim_ecmp_nexthop_search(pim, &out_pnc, | |
1000 | &nexthop, | |
1001 | &src, &grp, 0); | |
1002 | if (nexthop.interface) | |
1003 | input_iface_vif_index = | |
d62a17ae | 1004 | pim_if_find_vifindex_by_ifindex( |
732c209c SP |
1005 | pim, |
1006 | nexthop.interface->ifindex); | |
1007 | } else { | |
1008 | if (PIM_DEBUG_ZEBRA) { | |
1009 | char buf1[INET_ADDRSTRLEN]; | |
1010 | char buf2[INET_ADDRSTRLEN]; | |
1011 | ||
1012 | pim_inet4_dump("<source?>", | |
d62a17ae | 1013 | nht_p.u.prefix4, buf1, |
1014 | sizeof(buf1)); | |
732c209c | 1015 | pim_inet4_dump("<source?>", |
d62a17ae | 1016 | grp.u.prefix4, buf2, |
1017 | sizeof(buf2)); | |
732c209c | 1018 | zlog_debug( |
d62a17ae | 1019 | "%s: NHT Nexthop not found for addr %s grp %s", |
1020 | __PRETTY_FUNCTION__, buf1, | |
1021 | buf2); | |
732c209c | 1022 | } |
d62a17ae | 1023 | } |
732c209c SP |
1024 | } else |
1025 | input_iface_vif_index = | |
1026 | pim_ecmp_fib_lookup_if_vif_index(pim, &src, | |
b938537b | 1027 | &grp); |
d62a17ae | 1028 | |
732c209c SP |
1029 | if (PIM_DEBUG_ZEBRA) { |
1030 | char buf2[INET_ADDRSTRLEN]; | |
d62a17ae | 1031 | |
732c209c SP |
1032 | pim_inet4_dump("<source?>", vif_source, buf2, |
1033 | sizeof(buf2)); | |
1034 | zlog_debug("%s: NHT %s vif_source %s vif_index:%d ", | |
d62a17ae | 1035 | __PRETTY_FUNCTION__, |
1036 | pim_str_sg_dump(&sg), | |
732c209c | 1037 | buf2, input_iface_vif_index); |
d62a17ae | 1038 | } |
d62a17ae | 1039 | |
732c209c SP |
1040 | if (input_iface_vif_index < 1) { |
1041 | if (PIM_DEBUG_IGMP_TRACE) { | |
1042 | char source_str[INET_ADDRSTRLEN]; | |
1043 | pim_inet4_dump("<source?>", | |
1044 | source->source_addr, | |
1045 | source_str, sizeof(source_str)); | |
1046 | zlog_debug( | |
1047 | "%s %s: could not find input interface for source %s", | |
1048 | __FILE__, __PRETTY_FUNCTION__, | |
1049 | source_str); | |
1050 | } | |
1051 | source->source_channel_oil = | |
1052 | pim_channel_oil_add(pim, &sg, MAXVIFS); | |
1053 | } | |
1054 | ||
1055 | else { | |
1056 | /* | |
1057 | * Protect IGMP against adding looped MFC | |
1058 | * entries created by both source and receiver | |
1059 | * attached to the same interface. See TODO | |
1060 | * T22. | |
1061 | */ | |
1062 | if (input_iface_vif_index == | |
1063 | pim_oif->mroute_vif_index) { | |
1064 | /* ignore request for looped MFC entry | |
1065 | */ | |
1066 | if (PIM_DEBUG_IGMP_TRACE) { | |
1067 | zlog_debug( | |
1068 | "%s: ignoring request for looped MFC entry (S,G)=%s: igmp_sock=%d oif=%s vif_index=%d", | |
1069 | __PRETTY_FUNCTION__, | |
1070 | pim_str_sg_dump(&sg), | |
1071 | source->source_group | |
1072 | ->group_igmp_sock->fd, | |
1073 | source->source_group | |
1074 | ->group_igmp_sock | |
1075 | ->interface->name, | |
1076 | input_iface_vif_index); | |
1077 | } | |
1078 | return; | |
1079 | } | |
1080 | ||
1081 | source->source_channel_oil = | |
1082 | pim_channel_oil_add(pim, &sg, | |
1083 | input_iface_vif_index); | |
1084 | if (!source->source_channel_oil) { | |
1085 | if (PIM_DEBUG_IGMP_TRACE) { | |
1086 | zlog_debug( | |
1087 | "%s %s: could not create OIL for channel (S,G)=%s", | |
1088 | __FILE__, | |
1089 | __PRETTY_FUNCTION__, | |
1090 | pim_str_sg_dump(&sg)); | |
1091 | } | |
1092 | return; | |
1093 | } | |
d62a17ae | 1094 | } |
d62a17ae | 1095 | } |
8711a53d | 1096 | } |
d62a17ae | 1097 | |
1098 | result = pim_channel_add_oif(source->source_channel_oil, | |
1099 | group->group_igmp_sock->interface, | |
1100 | PIM_OIF_FLAG_PROTO_IGMP); | |
1101 | if (result) { | |
1102 | if (PIM_DEBUG_MROUTE) { | |
1103 | zlog_warn("%s: add_oif() failed with return=%d", | |
1104 | __func__, result); | |
1105 | } | |
1106 | return; | |
8711a53d | 1107 | } |
d62a17ae | 1108 | |
90a084e4 DS |
1109 | if (!(PIM_I_am_DR(pim_oif))) { |
1110 | if (PIM_DEBUG_IGMP_TRACE) | |
1111 | zlog_debug("%s: %s was received on %s interface but we are not DR for that interface", | |
1112 | __PRETTY_FUNCTION__, | |
1113 | pim_str_sg_dump(&sg), | |
1114 | group->group_igmp_sock->interface->name); | |
b96892db DS |
1115 | |
1116 | pim_channel_del_oif(source->source_channel_oil, | |
1117 | group->group_igmp_sock->interface, | |
1118 | PIM_OIF_FLAG_PROTO_IGMP); | |
75c61a18 | 1119 | return; |
90a084e4 | 1120 | } |
d62a17ae | 1121 | /* |
1122 | Feed IGMPv3-gathered local membership information into PIM | |
1123 | per-interface (S,G) state. | |
1124 | */ | |
1125 | if (!pim_ifchannel_local_membership_add( | |
75c61a18 | 1126 | group->group_igmp_sock->interface, &sg)) { |
d62a17ae | 1127 | if (PIM_DEBUG_MROUTE) |
1128 | zlog_warn("%s: Failure to add local membership for %s", | |
1129 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
b96892db DS |
1130 | |
1131 | pim_channel_del_oif(source->source_channel_oil, | |
1132 | group->group_igmp_sock->interface, | |
1133 | PIM_OIF_FLAG_PROTO_IGMP); | |
d62a17ae | 1134 | return; |
1135 | } | |
1136 | ||
1137 | IGMP_SOURCE_DO_FORWARDING(source->source_flags); | |
12e41d03 DL |
1138 | } |
1139 | ||
1140 | /* | |
1141 | igmp_source_forward_stop: stop fowarding, but keep the source | |
1142 | igmp_source_delete: stop fowarding, and delete the source | |
1143 | */ | |
1144 | void igmp_source_forward_stop(struct igmp_source *source) | |
1145 | { | |
d62a17ae | 1146 | struct igmp_group *group; |
1147 | struct prefix_sg sg; | |
1148 | int result; | |
1149 | ||
1150 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
1151 | sg.src = source->source_addr; | |
1152 | sg.grp = source->source_group->group_addr; | |
1153 | ||
1154 | if (PIM_DEBUG_IGMP_TRACE) { | |
1155 | zlog_debug( | |
1156 | "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d", | |
1157 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
1158 | source->source_group->group_igmp_sock->fd, | |
1159 | source->source_group->group_igmp_sock->interface->name, | |
1160 | IGMP_SOURCE_TEST_FORWARDING(source->source_flags)); | |
1161 | } | |
1162 | ||
1163 | /* Prevent IGMP interface from removing multicast route multiple | |
1164 | times */ | |
1165 | if (!IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) { | |
1166 | return; | |
1167 | } | |
1168 | ||
1169 | group = source->source_group; | |
1170 | ||
1171 | /* | |
1172 | It appears that in certain circumstances that | |
1173 | igmp_source_forward_stop is called when IGMP forwarding | |
1174 | was not enabled in oif_flags for this outgoing interface. | |
1175 | Possibly because of multiple calls. When that happens, we | |
1176 | enter the below if statement and this function returns early | |
1177 | which in turn triggers the calling function to assert. | |
1178 | Making the call to pim_channel_del_oif and ignoring the return code | |
1179 | fixes the issue without ill effect, similar to | |
1180 | pim_forward_stop below. | |
1181 | */ | |
1182 | result = pim_channel_del_oif(source->source_channel_oil, | |
1183 | group->group_igmp_sock->interface, | |
1184 | PIM_OIF_FLAG_PROTO_IGMP); | |
1185 | if (result) { | |
1186 | if (PIM_DEBUG_IGMP_TRACE) | |
1187 | zlog_debug( | |
1188 | "%s: pim_channel_del_oif() failed with return=%d", | |
1189 | __func__, result); | |
1190 | return; | |
1191 | } | |
1192 | ||
1193 | /* | |
1194 | Feed IGMPv3-gathered local membership information into PIM | |
1195 | per-interface (S,G) state. | |
1196 | */ | |
1197 | pim_ifchannel_local_membership_del(group->group_igmp_sock->interface, | |
1198 | &sg); | |
1199 | ||
1200 | IGMP_SOURCE_DONT_FORWARDING(source->source_flags); | |
12e41d03 DL |
1201 | } |
1202 | ||
1203 | void pim_forward_start(struct pim_ifchannel *ch) | |
1204 | { | |
d62a17ae | 1205 | struct pim_upstream *up = ch->upstream; |
1206 | uint32_t mask = PIM_OIF_FLAG_PROTO_PIM; | |
1207 | int input_iface_vif_index = 0; | |
6f932b0c DS |
1208 | struct pim_instance *pim; |
1209 | struct pim_interface *pim_ifp; | |
1210 | ||
1211 | pim_ifp = ch->interface->info; | |
1212 | pim = pim_ifp->pim; | |
d62a17ae | 1213 | |
1214 | if (PIM_DEBUG_PIM_TRACE) { | |
1215 | char source_str[INET_ADDRSTRLEN]; | |
1216 | char group_str[INET_ADDRSTRLEN]; | |
1217 | char upstream_str[INET_ADDRSTRLEN]; | |
1218 | ||
1219 | pim_inet4_dump("<source?>", ch->sg.src, source_str, | |
1220 | sizeof(source_str)); | |
1221 | pim_inet4_dump("<group?>", ch->sg.grp, group_str, | |
1222 | sizeof(group_str)); | |
1223 | pim_inet4_dump("<upstream?>", up->upstream_addr, upstream_str, | |
1224 | sizeof(upstream_str)); | |
1225 | zlog_debug("%s: (S,G)=(%s,%s) oif=%s (%s)", __PRETTY_FUNCTION__, | |
1226 | source_str, group_str, ch->interface->name, | |
732c209c | 1227 | inet_ntoa(up->upstream_addr)); |
d62a17ae | 1228 | } |
1229 | ||
1230 | /* Resolve IIF for upstream as mroute_del sets mfcc_parent to MAXVIFS, | |
1231 | as part of mroute_del called by pim_forward_stop. | |
1232 | */ | |
732c209c | 1233 | if ((up->upstream_addr.s_addr != INADDR_ANY) && (!up->channel_oil)) { |
d62a17ae | 1234 | struct prefix nht_p, src, grp; |
d62a17ae | 1235 | struct pim_nexthop_cache out_pnc; |
1236 | ||
1237 | /* Register addr with Zebra NHT */ | |
1238 | nht_p.family = AF_INET; | |
1239 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
b938537b | 1240 | nht_p.u.prefix4 = up->upstream_addr; |
d62a17ae | 1241 | grp.family = AF_INET; |
1242 | grp.prefixlen = IPV4_MAX_BITLEN; | |
1243 | grp.u.prefix4 = up->sg.grp; | |
1244 | memset(&out_pnc, 0, sizeof(struct pim_nexthop_cache)); | |
1245 | ||
6f932b0c | 1246 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, NULL, |
25bdac42 | 1247 | &out_pnc)) { |
d62a17ae | 1248 | if (out_pnc.nexthop_num) { |
1249 | src.family = AF_INET; | |
1250 | src.prefixlen = IPV4_MAX_BITLEN; | |
1251 | src.u.prefix4 = | |
1252 | up->upstream_addr; // RP or Src address | |
1253 | grp.family = AF_INET; | |
1254 | grp.prefixlen = IPV4_MAX_BITLEN; | |
1255 | grp.u.prefix4 = up->sg.grp; | |
1256 | // Compute PIM RPF using Cached nexthop | |
1257 | if (pim_ecmp_nexthop_search( | |
6f932b0c | 1258 | pim, &out_pnc, |
25b787a2 DS |
1259 | &up->rpf.source_nexthop, &src, &grp, |
1260 | 0)) | |
d62a17ae | 1261 | input_iface_vif_index = |
1262 | pim_if_find_vifindex_by_ifindex( | |
6f932b0c | 1263 | pim, |
d62a17ae | 1264 | up->rpf.source_nexthop |
1265 | .interface->ifindex); | |
1266 | else { | |
1267 | if (PIM_DEBUG_TRACE) | |
1268 | zlog_debug( | |
1269 | "%s: Nexthop selection failed for %s ", | |
1270 | __PRETTY_FUNCTION__, | |
1271 | up->sg_str); | |
1272 | } | |
1273 | } else { | |
1274 | if (PIM_DEBUG_ZEBRA) { | |
1275 | char buf1[INET_ADDRSTRLEN]; | |
1276 | char buf2[INET_ADDRSTRLEN]; | |
1277 | pim_inet4_dump("<source?>", | |
1278 | nht_p.u.prefix4, buf1, | |
1279 | sizeof(buf1)); | |
1280 | pim_inet4_dump("<source?>", | |
1281 | grp.u.prefix4, buf2, | |
1282 | sizeof(buf2)); | |
1283 | zlog_debug( | |
1284 | "%s: NHT pnc is NULL for addr %s grp %s", | |
1285 | __PRETTY_FUNCTION__, buf1, | |
1286 | buf2); | |
1287 | } | |
1288 | } | |
1289 | } else | |
1290 | input_iface_vif_index = | |
b938537b DS |
1291 | pim_ecmp_fib_lookup_if_vif_index(pim, &src, |
1292 | &grp); | |
d62a17ae | 1293 | |
1294 | if (input_iface_vif_index < 1) { | |
1295 | if (PIM_DEBUG_PIM_TRACE) { | |
1296 | char source_str[INET_ADDRSTRLEN]; | |
1297 | pim_inet4_dump("<source?>", up->sg.src, | |
1298 | source_str, sizeof(source_str)); | |
1299 | zlog_debug( | |
1300 | "%s %s: could not find input interface for source %s", | |
1301 | __FILE__, __PRETTY_FUNCTION__, | |
1302 | source_str); | |
1303 | } | |
732c209c SP |
1304 | up->channel_oil = pim_channel_oil_add(pim, &up->sg, |
1305 | MAXVIFS); | |
d62a17ae | 1306 | } |
732c209c SP |
1307 | |
1308 | else { | |
1309 | up->channel_oil = pim_channel_oil_add(pim, &up->sg, | |
1310 | input_iface_vif_index); | |
1311 | if (!up->channel_oil) { | |
1312 | if (PIM_DEBUG_PIM_TRACE) | |
1313 | zlog_debug( | |
1314 | "%s %s: could not create OIL for channel (S,G)=%s", | |
1315 | __FILE__, __PRETTY_FUNCTION__, | |
1316 | up->sg_str); | |
1317 | return; | |
1318 | } | |
1319 | } | |
1320 | ||
d62a17ae | 1321 | if (PIM_DEBUG_TRACE) { |
7cfc7bcf | 1322 | struct interface *in_intf = pim_if_find_by_vif_index( |
6f932b0c | 1323 | pim, input_iface_vif_index); |
d62a17ae | 1324 | zlog_debug( |
1325 | "%s: Update channel_oil IIF %s VIFI %d entry %s ", | |
1326 | __PRETTY_FUNCTION__, | |
732c209c | 1327 | in_intf ? in_intf->name : "Unknown", |
d62a17ae | 1328 | input_iface_vif_index, up->sg_str); |
1329 | } | |
732c209c | 1330 | |
6f932b0c | 1331 | up->channel_oil = pim_channel_oil_add(pim, &up->sg, |
611925dc | 1332 | input_iface_vif_index); |
d62a17ae | 1333 | if (!up->channel_oil) { |
1334 | if (PIM_DEBUG_PIM_TRACE) | |
1335 | zlog_debug( | |
1336 | "%s %s: could not create OIL for channel (S,G)=%s", | |
1337 | __FILE__, __PRETTY_FUNCTION__, | |
1338 | up->sg_str); | |
1339 | return; | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | if (up->flags & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
1344 | mask = PIM_OIF_FLAG_PROTO_IGMP; | |
1345 | ||
1346 | pim_channel_add_oif(up->channel_oil, ch->interface, mask); | |
12e41d03 DL |
1347 | } |
1348 | ||
aabb9a2f | 1349 | void pim_forward_stop(struct pim_ifchannel *ch, bool install_it) |
12e41d03 | 1350 | { |
d62a17ae | 1351 | struct pim_upstream *up = ch->upstream; |
12e41d03 | 1352 | |
d62a17ae | 1353 | if (PIM_DEBUG_PIM_TRACE) { |
aabb9a2f DS |
1354 | zlog_debug("%s: (S,G)=%s oif=%s install_it: %d installed: %d", |
1355 | __PRETTY_FUNCTION__, ch->sg_str, ch->interface->name, | |
1356 | install_it, up->channel_oil->installed); | |
d62a17ae | 1357 | } |
12e41d03 | 1358 | |
d62a17ae | 1359 | pim_channel_del_oif(up->channel_oil, ch->interface, |
1360 | PIM_OIF_FLAG_PROTO_PIM); | |
aabb9a2f DS |
1361 | |
1362 | if (install_it && !up->channel_oil->installed) | |
1363 | pim_mroute_add(up->channel_oil, __PRETTY_FUNCTION__); | |
12e41d03 | 1364 | } |
8799b66b | 1365 | |
d62a17ae | 1366 | void pim_zebra_zclient_update(struct vty *vty) |
8799b66b | 1367 | { |
d62a17ae | 1368 | vty_out(vty, "Zclient update socket: "); |
1369 | ||
1370 | if (zclient) { | |
1371 | vty_out(vty, "%d failures=%d\n", zclient->sock, zclient->fail); | |
1372 | } else { | |
1373 | vty_out(vty, "<null zclient>\n"); | |
1374 | } | |
8799b66b | 1375 | } |
1bc98276 | 1376 | |
d62a17ae | 1377 | struct zclient *pim_zebra_zclient_get(void) |
1bc98276 | 1378 | { |
d62a17ae | 1379 | if (zclient) |
1380 | return zclient; | |
1381 | else | |
1382 | return NULL; | |
1bc98276 | 1383 | } |