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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_add(ZAPI_CALLBACK_ARGS) |
12e41d03 | 67 | { |
d62a17ae | 68 | struct interface *ifp; |
26bb1fd5 | 69 | struct pim_instance *pim; |
d62a17ae | 70 | |
71 | /* | |
72 | zebra api adds/dels interfaces using the same call | |
73 | interface_add_read below, see comments in lib/zclient.c | |
74 | */ | |
75 | ifp = zebra_interface_add_read(zclient->ibuf, vrf_id); | |
76 | if (!ifp) | |
77 | return 0; | |
78 | ||
26bb1fd5 | 79 | pim = pim_get_pim_instance(vrf_id); |
d62a17ae | 80 | if (PIM_DEBUG_ZEBRA) { |
81 | zlog_debug( | |
87ad28f4 | 82 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 83 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 84 | (long)ifp->flags, ifp->metric, ifp->mtu, |
85 | if_is_operative(ifp)); | |
86 | } | |
87 | ||
26bb1fd5 DS |
88 | if (if_is_operative(ifp)) { |
89 | struct pim_interface *pim_ifp; | |
90 | ||
91 | pim_ifp = ifp->info; | |
92 | /* | |
93 | * If we have a pim_ifp already and this is an if_add | |
94 | * that means that we probably have a vrf move event | |
95 | * If that is the case, set the proper vrfness. | |
96 | */ | |
97 | if (pim_ifp) | |
98 | pim_ifp->pim = pim; | |
d62a17ae | 99 | pim_if_addr_add_all(ifp); |
26bb1fd5 | 100 | } |
d62a17ae | 101 | |
90133de6 DS |
102 | /* |
103 | * If we are a vrf device that is up, open up the pim_socket for | |
104 | * listening | |
105 | * to incoming pim messages irrelevant if the user has configured us | |
106 | * for pim or not. | |
107 | */ | |
108 | if (pim_if_is_vrf_device(ifp)) { | |
109 | struct pim_interface *pim_ifp; | |
110 | ||
111 | if (!ifp->info) { | |
b1891fa0 AK |
112 | pim_ifp = pim_if_new(ifp, false, false, false, |
113 | false /*vxlan_term*/); | |
90133de6 DS |
114 | ifp->info = pim_ifp; |
115 | } | |
116 | ||
117 | pim_sock_add(ifp); | |
118 | } | |
119 | ||
0a2dcc1c AK |
120 | if (!strncmp(ifp->name, PIM_VXLAN_TERM_DEV_NAME, |
121 | sizeof(PIM_VXLAN_TERM_DEV_NAME))) | |
122 | pim_vxlan_add_term_dev(pim, ifp); | |
123 | ||
d62a17ae | 124 | return 0; |
12e41d03 DL |
125 | } |
126 | ||
121f9dee | 127 | static int pim_zebra_if_del(ZAPI_CALLBACK_ARGS) |
12e41d03 | 128 | { |
d62a17ae | 129 | struct interface *ifp; |
0a2dcc1c | 130 | struct pim_instance *pim; |
d62a17ae | 131 | |
132 | /* | |
133 | zebra api adds/dels interfaces using the same call | |
134 | interface_add_read below, see comments in lib/zclient.c | |
135 | ||
136 | comments in lib/zclient.c seem to indicate that calling | |
137 | zebra_interface_add_read is the correct call, but that | |
138 | results in an attemted out of bounds read which causes | |
139 | pimd to assert. Other clients use zebra_interface_state_read | |
140 | and it appears to work just fine. | |
141 | */ | |
142 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
143 | if (!ifp) | |
144 | return 0; | |
145 | ||
146 | if (PIM_DEBUG_ZEBRA) { | |
147 | zlog_debug( | |
87ad28f4 | 148 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 149 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 150 | (long)ifp->flags, ifp->metric, ifp->mtu, |
151 | if_is_operative(ifp)); | |
152 | } | |
153 | ||
154 | if (!if_is_operative(ifp)) | |
155 | pim_if_addr_del_all(ifp); | |
156 | ||
9d6c33ea DS |
157 | if_set_index(ifp, IFINDEX_INTERNAL); |
158 | ||
0a2dcc1c AK |
159 | pim = pim_get_pim_instance(vrf_id); |
160 | if (pim && pim->vxlan.term_if == ifp) | |
161 | pim_vxlan_del_term_dev(pim); | |
162 | ||
d62a17ae | 163 | return 0; |
12e41d03 DL |
164 | } |
165 | ||
121f9dee | 166 | static int pim_zebra_if_state_up(ZAPI_CALLBACK_ARGS) |
12e41d03 | 167 | { |
26bb1fd5 | 168 | struct pim_instance *pim; |
d62a17ae | 169 | struct interface *ifp; |
e0ae31b8 | 170 | uint32_t table_id; |
d62a17ae | 171 | |
172 | /* | |
173 | zebra api notifies interface up/down events by using the same call | |
174 | zebra_interface_state_read below, see comments in lib/zclient.c | |
175 | */ | |
176 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
177 | if (!ifp) | |
178 | return 0; | |
179 | ||
180 | if (PIM_DEBUG_ZEBRA) { | |
181 | zlog_debug( | |
87ad28f4 | 182 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 183 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 184 | (long)ifp->flags, ifp->metric, ifp->mtu, |
185 | if_is_operative(ifp)); | |
186 | } | |
187 | ||
26bb1fd5 | 188 | pim = pim_get_pim_instance(vrf_id); |
d62a17ae | 189 | if (if_is_operative(ifp)) { |
26bb1fd5 DS |
190 | struct pim_interface *pim_ifp; |
191 | ||
192 | pim_ifp = ifp->info; | |
193 | /* | |
194 | * If we have a pim_ifp already and this is an if_add | |
195 | * that means that we probably have a vrf move event | |
196 | * If that is the case, set the proper vrfness. | |
197 | */ | |
198 | if (pim_ifp) | |
199 | pim_ifp->pim = pim; | |
200 | ||
d62a17ae | 201 | /* |
202 | pim_if_addr_add_all() suffices for bringing up both IGMP and | |
203 | PIM | |
204 | */ | |
205 | pim_if_addr_add_all(ifp); | |
206 | } | |
207 | ||
e0ae31b8 DS |
208 | /* |
209 | * If we have a pimreg device callback and it's for a specific | |
210 | * table set the master appropriately | |
211 | */ | |
0651460e | 212 | if (sscanf(ifp->name, "pimreg%" SCNu32, &table_id) == 1) { |
e0ae31b8 | 213 | struct vrf *vrf; |
a2addae8 | 214 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
e0ae31b8 | 215 | if ((table_id == vrf->data.l.table_id) |
a36898e7 | 216 | && (ifp->vrf_id != vrf->vrf_id)) { |
e0ae31b8 | 217 | struct interface *master = if_lookup_by_name( |
a36898e7 | 218 | vrf->name, vrf->vrf_id); |
e691f179 DS |
219 | |
220 | if (!master) { | |
996c9314 LB |
221 | zlog_debug( |
222 | "%s: Unable to find Master interface for %s", | |
223 | __PRETTY_FUNCTION__, vrf->name); | |
e691f179 DS |
224 | return 0; |
225 | } | |
e0ae31b8 DS |
226 | zclient_interface_set_master(zclient, master, |
227 | ifp); | |
228 | } | |
229 | } | |
230 | } | |
d62a17ae | 231 | return 0; |
12e41d03 DL |
232 | } |
233 | ||
121f9dee | 234 | static int pim_zebra_if_state_down(ZAPI_CALLBACK_ARGS) |
12e41d03 | 235 | { |
d62a17ae | 236 | struct interface *ifp; |
237 | ||
238 | /* | |
239 | zebra api notifies interface up/down events by using the same call | |
240 | zebra_interface_state_read below, see comments in lib/zclient.c | |
241 | */ | |
242 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
243 | if (!ifp) | |
244 | return 0; | |
245 | ||
246 | if (PIM_DEBUG_ZEBRA) { | |
247 | zlog_debug( | |
87ad28f4 | 248 | "%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d", |
e0ae31b8 | 249 | __PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id, |
d62a17ae | 250 | (long)ifp->flags, ifp->metric, ifp->mtu, |
251 | if_is_operative(ifp)); | |
252 | } | |
253 | ||
254 | if (!if_is_operative(ifp)) { | |
255 | pim_ifchannel_delete_all(ifp); | |
256 | /* | |
257 | pim_if_addr_del_all() suffices for shutting down IGMP, | |
258 | but not for shutting down PIM | |
259 | */ | |
260 | pim_if_addr_del_all(ifp); | |
261 | ||
262 | /* | |
263 | pim_sock_delete() closes the socket, stops read and timer | |
264 | threads, | |
265 | and kills all neighbors. | |
266 | */ | |
267 | if (ifp->info) { | |
268 | pim_sock_delete(ifp, "link down"); | |
269 | } | |
270 | } | |
271 | ||
272 | if (ifp->info) | |
273 | pim_if_del_vif(ifp); | |
274 | ||
275 | return 0; | |
12e41d03 DL |
276 | } |
277 | ||
121f9dee | 278 | static int pim_zebra_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
ee568318 DS |
279 | { |
280 | struct interface *ifp; | |
281 | vrf_id_t new_vrf_id; | |
282 | ||
283 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
284 | &new_vrf_id); | |
285 | if (!ifp) | |
286 | return 0; | |
287 | ||
288 | if (PIM_DEBUG_ZEBRA) | |
289 | zlog_debug("%s: %s updating from %u to %u", | |
290 | __PRETTY_FUNCTION__, | |
291 | ifp->name, vrf_id, new_vrf_id); | |
292 | ||
a36898e7 | 293 | if_update_to_new_vrf(ifp, new_vrf_id); |
ee568318 DS |
294 | |
295 | return 0; | |
296 | } | |
297 | ||
12e41d03 DL |
298 | #ifdef PIM_DEBUG_IFADDR_DUMP |
299 | static void dump_if_address(struct interface *ifp) | |
300 | { | |
d62a17ae | 301 | struct connected *ifc; |
302 | struct listnode *node; | |
303 | ||
304 | zlog_debug("%s %s: interface %s addresses:", __FILE__, | |
305 | __PRETTY_FUNCTION__, ifp->name); | |
306 | ||
307 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
308 | struct prefix *p = ifc->address; | |
309 | ||
310 | if (p->family != AF_INET) | |
311 | continue; | |
312 | ||
313 | zlog_debug("%s %s: interface %s address %s %s", __FILE__, | |
314 | __PRETTY_FUNCTION__, ifp->name, | |
315 | inet_ntoa(p->u.prefix4), | |
316 | CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) | |
317 | ? "secondary" | |
318 | : "primary"); | |
319 | } | |
12e41d03 DL |
320 | } |
321 | #endif | |
322 | ||
121f9dee | 323 | static int pim_zebra_if_address_add(ZAPI_CALLBACK_ARGS) |
12e41d03 | 324 | { |
d62a17ae | 325 | struct connected *c; |
326 | struct prefix *p; | |
327 | struct pim_interface *pim_ifp; | |
26bb1fd5 | 328 | struct pim_instance *pim; |
d62a17ae | 329 | |
330 | /* | |
331 | zebra api notifies address adds/dels events by using the same call | |
332 | interface_add_read below, see comments in lib/zclient.c | |
333 | ||
334 | zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, ...) | |
335 | will add address to interface list by calling | |
336 | connected_add_by_prefix() | |
337 | */ | |
121f9dee | 338 | c = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); |
d62a17ae | 339 | if (!c) |
340 | return 0; | |
341 | ||
342 | pim_ifp = c->ifp->info; | |
343 | p = c->address; | |
344 | ||
345 | if (PIM_DEBUG_ZEBRA) { | |
346 | char buf[BUFSIZ]; | |
347 | prefix2str(p, buf, BUFSIZ); | |
87ad28f4 | 348 | zlog_debug("%s: %s(%u) connected IP address %s flags %u %s", |
e0ae31b8 | 349 | __PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf, |
996c9314 LB |
350 | c->flags, |
351 | CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) | |
352 | ? "secondary" | |
353 | : "primary"); | |
d62a17ae | 354 | |
12e41d03 | 355 | #ifdef PIM_DEBUG_IFADDR_DUMP |
d62a17ae | 356 | dump_if_address(c->ifp); |
12e41d03 | 357 | #endif |
d62a17ae | 358 | } |
12e41d03 | 359 | |
d62a17ae | 360 | if (!CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)) { |
361 | /* trying to add primary address */ | |
12e41d03 | 362 | |
d62a17ae | 363 | struct in_addr primary_addr = pim_find_primary_addr(c->ifp); |
364 | if (p->family != AF_INET | |
365 | || primary_addr.s_addr != p->u.prefix4.s_addr) { | |
366 | if (PIM_DEBUG_ZEBRA) { | |
367 | /* but we had a primary address already */ | |
12e41d03 | 368 | |
d62a17ae | 369 | char buf[BUFSIZ]; |
12e41d03 | 370 | |
d62a17ae | 371 | prefix2str(p, buf, BUFSIZ); |
12e41d03 | 372 | |
d62a17ae | 373 | zlog_warn( |
374 | "%s: %s : forcing secondary flag on %s", | |
375 | __PRETTY_FUNCTION__, c->ifp->name, buf); | |
376 | } | |
377 | SET_FLAG(c->flags, ZEBRA_IFA_SECONDARY); | |
378 | } | |
379 | } | |
12e41d03 | 380 | |
d62a17ae | 381 | pim_if_addr_add(c); |
26bb1fd5 DS |
382 | if (pim_ifp) { |
383 | pim = pim_get_pim_instance(vrf_id); | |
384 | pim_ifp->pim = pim; | |
385 | ||
d62a17ae | 386 | pim_rp_check_on_if_add(pim_ifp); |
26bb1fd5 | 387 | } |
12e41d03 | 388 | |
d62a17ae | 389 | if (if_is_loopback(c->ifp)) { |
f4e14fdb | 390 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 391 | struct interface *ifp; |
d8424057 | 392 | |
451fda4f | 393 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 394 | if (!if_is_loopback(ifp) && if_is_operative(ifp)) |
395 | pim_if_addr_add_all(ifp); | |
396 | } | |
397 | } | |
d8424057 | 398 | |
d62a17ae | 399 | return 0; |
12e41d03 DL |
400 | } |
401 | ||
121f9dee | 402 | static int pim_zebra_if_address_del(ZAPI_CALLBACK_ARGS) |
12e41d03 | 403 | { |
d62a17ae | 404 | struct connected *c; |
405 | struct prefix *p; | |
fec883d9 | 406 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
819f099b DS |
407 | struct pim_instance *pim; |
408 | ||
409 | if (!vrf) | |
410 | return 0; | |
411 | pim = vrf->info; | |
d62a17ae | 412 | |
413 | /* | |
414 | zebra api notifies address adds/dels events by using the same call | |
415 | interface_add_read below, see comments in lib/zclient.c | |
416 | ||
417 | zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, ...) | |
418 | will remove address from interface list by calling | |
419 | connected_delete_by_prefix() | |
420 | */ | |
121f9dee | 421 | c = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); |
d62a17ae | 422 | if (!c) |
423 | return 0; | |
424 | ||
425 | p = c->address; | |
426 | if (p->family == AF_INET) { | |
427 | if (PIM_DEBUG_ZEBRA) { | |
428 | char buf[BUFSIZ]; | |
429 | prefix2str(p, buf, BUFSIZ); | |
430 | zlog_debug( | |
87ad28f4 | 431 | "%s: %s(%u) disconnected IP address %s flags %u %s", |
e0ae31b8 | 432 | __PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf, |
d62a17ae | 433 | c->flags, |
434 | CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) | |
435 | ? "secondary" | |
436 | : "primary"); | |
6233f087 | 437 | |
12e41d03 | 438 | #ifdef PIM_DEBUG_IFADDR_DUMP |
d62a17ae | 439 | dump_if_address(c->ifp); |
12e41d03 | 440 | #endif |
d62a17ae | 441 | } |
12e41d03 | 442 | |
d62a17ae | 443 | pim_if_addr_del(c, 0); |
fec883d9 DS |
444 | pim_rp_setup(pim); |
445 | pim_i_am_rp_re_evaluate(pim); | |
d62a17ae | 446 | } |
6233f087 | 447 | |
d62a17ae | 448 | connected_free(c); |
449 | return 0; | |
12e41d03 DL |
450 | } |
451 | ||
74389231 DS |
452 | void pim_zebra_update_all_interfaces(struct pim_instance *pim) |
453 | { | |
454 | struct interface *ifp; | |
455 | ||
456 | FOR_ALL_INTERFACES (pim->vrf, ifp) { | |
457 | struct pim_interface *pim_ifp = ifp->info; | |
458 | struct pim_iface_upstream_switch *us; | |
459 | struct listnode *node; | |
460 | ||
461 | if (!pim_ifp) | |
462 | continue; | |
463 | ||
464 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->upstream_switch_list, node, | |
465 | us)) { | |
466 | struct pim_rpf rpf; | |
467 | ||
468 | rpf.source_nexthop.interface = ifp; | |
469 | rpf.rpf_addr.u.prefix4 = us->address; | |
470 | pim_joinprune_send(&rpf, us->us); | |
471 | pim_jp_agg_clear_group(us->us); | |
472 | } | |
473 | } | |
474 | } | |
475 | ||
cc67ccf9 DS |
476 | void pim_zebra_upstream_rpf_changed(struct pim_instance *pim, |
477 | struct pim_upstream *up, | |
478 | struct pim_rpf *old) | |
479 | { | |
1250cb5d SP |
480 | if (old->source_nexthop.interface) { |
481 | struct pim_neighbor *nbr; | |
cc67ccf9 | 482 | |
1250cb5d SP |
483 | nbr = pim_neighbor_find(old->source_nexthop.interface, |
484 | old->rpf_addr.u.prefix4); | |
485 | if (nbr) | |
486 | pim_jp_agg_remove_group(nbr->upstream_jp_agg, up); | |
cc67ccf9 | 487 | |
cc67ccf9 | 488 | /* |
1250cb5d SP |
489 | * We have detected a case where we might need |
490 | * to rescan the inherited o_list so do it. | |
cc67ccf9 | 491 | */ |
1250cb5d SP |
492 | if (up->channel_oil->oil_inherited_rescan) { |
493 | pim_upstream_inherited_olist_decide(pim, up); | |
494 | up->channel_oil->oil_inherited_rescan = 0; | |
495 | } | |
cc67ccf9 | 496 | |
1250cb5d SP |
497 | if (up->join_state == PIM_UPSTREAM_JOINED) { |
498 | /* | |
499 | * If we come up real fast we can be here | |
500 | * where the mroute has not been installed | |
501 | * so install it. | |
502 | */ | |
503 | if (!up->channel_oil->installed) | |
504 | pim_mroute_add(up->channel_oil, | |
505 | __PRETTY_FUNCTION__); | |
506 | ||
507 | /* | |
508 | * RFC 4601: 4.5.7. Sending (S,G) | |
509 | * Join/Prune Messages | |
510 | * | |
511 | * Transitions from Joined State | |
512 | * | |
513 | * RPF'(S,G) changes not due to an Assert | |
514 | * | |
515 | * The upstream (S,G) state machine remains | |
516 | * in Joined state. Send Join(S,G) to the new | |
517 | * upstream neighbor, which is the new value | |
518 | * of RPF'(S,G). Send Prune(S,G) to the old | |
519 | * upstream neighbor, which is the old value | |
520 | * of RPF'(S,G). Set the Join Timer (JT) to | |
521 | * expire after t_periodic seconds. | |
522 | */ | |
523 | pim_jp_agg_switch_interface(old, &up->rpf, up); | |
524 | ||
525 | pim_upstream_join_timer_restart(up, old); | |
526 | } /* up->join_state == PIM_UPSTREAM_JOINED */ | |
527 | } | |
528 | ||
529 | else { | |
cc67ccf9 | 530 | /* |
1250cb5d SP |
531 | * We have detected a case where we might need |
532 | * to rescan the inherited o_list so do it. | |
cc67ccf9 | 533 | */ |
1250cb5d SP |
534 | if (up->channel_oil->oil_inherited_rescan) { |
535 | pim_upstream_inherited_olist_decide(pim, up); | |
536 | up->channel_oil->oil_inherited_rescan = 0; | |
537 | } | |
cc67ccf9 | 538 | |
1250cb5d SP |
539 | if (!up->channel_oil->installed) |
540 | pim_mroute_add(up->channel_oil, __PRETTY_FUNCTION__); | |
541 | } | |
cc67ccf9 | 542 | |
1250cb5d SP |
543 | /* FIXME can join_desired actually be changed by pim_rpf_update() |
544 | * returning PIM_RPF_CHANGED ? | |
545 | */ | |
cc67ccf9 DS |
546 | pim_upstream_update_join_desired(pim, up); |
547 | } | |
548 | ||
121f9dee | 549 | static int pim_zebra_vxlan_sg_proc(ZAPI_CALLBACK_ARGS) |
af7b561b AK |
550 | { |
551 | struct stream *s; | |
552 | struct pim_instance *pim; | |
553 | struct prefix_sg sg; | |
554 | ||
555 | pim = pim_get_pim_instance(vrf_id); | |
556 | if (!pim) | |
557 | return 0; | |
558 | ||
559 | s = zclient->ibuf; | |
560 | ||
561 | sg.family = AF_INET; | |
562 | sg.prefixlen = stream_getl(s); | |
563 | stream_get(&sg.src.s_addr, s, sg.prefixlen); | |
564 | stream_get(&sg.grp.s_addr, s, sg.prefixlen); | |
565 | ||
566 | if (PIM_DEBUG_ZEBRA) { | |
567 | char sg_str[PIM_SG_LEN]; | |
568 | ||
569 | pim_str_sg_set(&sg, sg_str); | |
570 | zlog_debug("%u:recv SG %s %s", vrf_id, | |
121f9dee | 571 | (cmd == ZEBRA_VXLAN_SG_ADD)?"add":"del", |
af7b561b AK |
572 | sg_str); |
573 | } | |
574 | ||
121f9dee | 575 | if (cmd == ZEBRA_VXLAN_SG_ADD) |
af7b561b AK |
576 | pim_vxlan_sg_add(pim, &sg); |
577 | else | |
578 | pim_vxlan_sg_del(pim, &sg); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
ecbbc3a7 AK |
583 | static void pim_zebra_vxlan_replay(void) |
584 | { | |
585 | struct stream *s = NULL; | |
586 | ||
587 | /* Check socket. */ | |
588 | if (!zclient || zclient->sock < 0) | |
589 | return; | |
590 | ||
591 | s = zclient->obuf; | |
592 | stream_reset(s); | |
593 | ||
594 | zclient_create_header(s, ZEBRA_VXLAN_SG_REPLAY, VRF_DEFAULT); | |
595 | stream_putw_at(s, 0, stream_get_endp(s)); | |
596 | ||
597 | zclient_send_message(zclient); | |
598 | } | |
599 | ||
d62a17ae | 600 | void pim_scan_individual_oil(struct channel_oil *c_oil, int in_vif_index) |
12e41d03 | 601 | { |
d62a17ae | 602 | struct in_addr vif_source; |
603 | int input_iface_vif_index; | |
d62a17ae | 604 | |
732c209c | 605 | pim_rp_set_upstream_addr(c_oil->pim, &vif_source, |
d9c9a9ee | 606 | c_oil->oil.mfcc_origin, |
732c209c | 607 | c_oil->oil.mfcc_mcastgrp); |
d62a17ae | 608 | |
609 | if (in_vif_index) | |
610 | input_iface_vif_index = in_vif_index; | |
611 | else { | |
612 | struct prefix src, grp; | |
613 | ||
614 | src.family = AF_INET; | |
615 | src.prefixlen = IPV4_MAX_BITLEN; | |
616 | src.u.prefix4 = vif_source; | |
617 | grp.family = AF_INET; | |
618 | grp.prefixlen = IPV4_MAX_BITLEN; | |
619 | grp.u.prefix4 = c_oil->oil.mfcc_mcastgrp; | |
620 | ||
621 | if (PIM_DEBUG_ZEBRA) { | |
622 | char source_str[INET_ADDRSTRLEN]; | |
623 | char group_str[INET_ADDRSTRLEN]; | |
624 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
625 | source_str, sizeof(source_str)); | |
626 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
627 | group_str, sizeof(group_str)); | |
628 | zlog_debug( | |
a895ac30 | 629 | "%s: channel_oil (%s,%s) upstream info is not present.", |
d62a17ae | 630 | __PRETTY_FUNCTION__, source_str, group_str); |
631 | } | |
632 | input_iface_vif_index = pim_ecmp_fib_lookup_if_vif_index( | |
b938537b | 633 | c_oil->pim, &src, &grp); |
d62a17ae | 634 | } |
635 | ||
636 | if (input_iface_vif_index < 1) { | |
637 | if (PIM_DEBUG_ZEBRA) { | |
638 | char source_str[INET_ADDRSTRLEN]; | |
639 | char group_str[INET_ADDRSTRLEN]; | |
640 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
641 | source_str, sizeof(source_str)); | |
642 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
643 | group_str, sizeof(group_str)); | |
644 | zlog_debug( | |
645 | "%s %s: could not find input interface(%d) for (S,G)=(%s,%s)", | |
646 | __FILE__, __PRETTY_FUNCTION__, | |
647 | c_oil->oil.mfcc_parent, source_str, group_str); | |
648 | } | |
649 | pim_mroute_del(c_oil, __PRETTY_FUNCTION__); | |
650 | return; | |
651 | } | |
652 | ||
653 | if (input_iface_vif_index == c_oil->oil.mfcc_parent) { | |
654 | if (!c_oil->installed) | |
655 | pim_mroute_add(c_oil, __PRETTY_FUNCTION__); | |
656 | ||
657 | /* RPF unchanged */ | |
658 | return; | |
659 | } | |
660 | ||
661 | if (PIM_DEBUG_ZEBRA) { | |
7cfc7bcf DS |
662 | struct interface *old_iif = pim_if_find_by_vif_index( |
663 | c_oil->pim, c_oil->oil.mfcc_parent); | |
664 | struct interface *new_iif = pim_if_find_by_vif_index( | |
665 | c_oil->pim, input_iface_vif_index); | |
d62a17ae | 666 | char source_str[INET_ADDRSTRLEN]; |
667 | char group_str[INET_ADDRSTRLEN]; | |
668 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, | |
669 | sizeof(source_str)); | |
670 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, | |
671 | sizeof(group_str)); | |
672 | zlog_debug( | |
673 | "%s %s: (S,G)=(%s,%s) input interface changed from %s vif_index=%d to %s vif_index=%d", | |
674 | __FILE__, __PRETTY_FUNCTION__, source_str, group_str, | |
97f03dde DS |
675 | (old_iif) ? old_iif->name : "<old_iif?>", |
676 | c_oil->oil.mfcc_parent, | |
677 | (new_iif) ? new_iif->name : "<new_iif?>", | |
d62a17ae | 678 | input_iface_vif_index); |
679 | } | |
680 | ||
681 | /* new iif loops to existing oif ? */ | |
682 | if (c_oil->oil.mfcc_ttls[input_iface_vif_index]) { | |
7cfc7bcf DS |
683 | struct interface *new_iif = pim_if_find_by_vif_index( |
684 | c_oil->pim, input_iface_vif_index); | |
d62a17ae | 685 | |
686 | if (PIM_DEBUG_ZEBRA) { | |
687 | char source_str[INET_ADDRSTRLEN]; | |
688 | char group_str[INET_ADDRSTRLEN]; | |
689 | pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, | |
690 | source_str, sizeof(source_str)); | |
691 | pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, | |
692 | group_str, sizeof(group_str)); | |
693 | zlog_debug( | |
694 | "%s %s: (S,G)=(%s,%s) new iif loops to existing oif: %s vif_index=%d", | |
695 | __FILE__, __PRETTY_FUNCTION__, source_str, | |
97f03dde DS |
696 | group_str, |
697 | (new_iif) ? new_iif->name : "<new_iif?>", | |
d62a17ae | 698 | input_iface_vif_index); |
699 | } | |
700 | } | |
701 | ||
702 | /* update iif vif_index */ | |
afb2f470 DS |
703 | pim_channel_oil_change_iif(c_oil->pim, c_oil, input_iface_vif_index, |
704 | __PRETTY_FUNCTION__); | |
705 | pim_mroute_add(c_oil, __PRETTY_FUNCTION__); | |
8a67a996 DS |
706 | } |
707 | ||
da11e325 | 708 | void pim_scan_oil(struct pim_instance *pim) |
8a67a996 | 709 | { |
d62a17ae | 710 | struct listnode *node; |
711 | struct listnode *nextnode; | |
712 | struct channel_oil *c_oil; | |
713 | ifindex_t ifindex; | |
714 | int vif_index = 0; | |
715 | ||
bfc92019 DS |
716 | pim->scan_oil_last = pim_time_monotonic_sec(); |
717 | ++pim->scan_oil_events; | |
d62a17ae | 718 | |
da11e325 DS |
719 | for (ALL_LIST_ELEMENTS(pim->channel_oil_list, node, nextnode, c_oil)) { |
720 | if (c_oil->up && c_oil->up->rpf.source_nexthop.interface) { | |
721 | ifindex = c_oil->up->rpf.source_nexthop | |
722 | .interface->ifindex; | |
723 | vif_index = | |
724 | pim_if_find_vifindex_by_ifindex(pim, ifindex); | |
725 | /* Pass Current selected NH vif index to mroute | |
726 | * download */ | |
727 | if (vif_index) | |
728 | pim_scan_individual_oil(c_oil, vif_index); | |
729 | } else | |
730 | pim_scan_individual_oil(c_oil, 0); | |
d62a17ae | 731 | } |
12e41d03 DL |
732 | } |
733 | ||
734 | static int on_rpf_cache_refresh(struct thread *t) | |
735 | { | |
da11e325 DS |
736 | struct pim_instance *pim = THREAD_ARG(t); |
737 | ||
d62a17ae | 738 | /* update kernel multicast forwarding cache (MFC) */ |
da11e325 | 739 | pim_scan_oil(pim); |
12e41d03 | 740 | |
bfc92019 DS |
741 | pim->rpf_cache_refresh_last = pim_time_monotonic_sec(); |
742 | ++pim->rpf_cache_refresh_events; | |
12e41d03 | 743 | |
d62a17ae | 744 | // It is called as part of pim_neighbor_add |
745 | // pim_rp_setup (); | |
746 | return 0; | |
12e41d03 DL |
747 | } |
748 | ||
da11e325 | 749 | void sched_rpf_cache_refresh(struct pim_instance *pim) |
12e41d03 | 750 | { |
bfc92019 | 751 | ++pim->rpf_cache_refresh_requests; |
12e41d03 | 752 | |
bfc92019 | 753 | pim_rpf_set_refresh_time(pim); |
e71bf8f7 | 754 | |
da11e325 | 755 | if (pim->rpf_cache_refresher) { |
d62a17ae | 756 | /* Refresh timer is already running */ |
757 | return; | |
758 | } | |
12e41d03 | 759 | |
d62a17ae | 760 | /* Start refresh timer */ |
12e41d03 | 761 | |
d62a17ae | 762 | if (PIM_DEBUG_ZEBRA) { |
763 | zlog_debug("%s: triggering %ld msec timer", __PRETTY_FUNCTION__, | |
da03883e | 764 | router->rpf_cache_refresh_delay_msec); |
d62a17ae | 765 | } |
12e41d03 | 766 | |
36417fcc | 767 | thread_add_timer_msec(router->master, on_rpf_cache_refresh, pim, |
da03883e | 768 | router->rpf_cache_refresh_delay_msec, |
da11e325 | 769 | &pim->rpf_cache_refresher); |
12e41d03 DL |
770 | } |
771 | ||
d62a17ae | 772 | static void pim_zebra_connected(struct zclient *zclient) |
48e8451b | 773 | { |
d62a17ae | 774 | /* Send the client registration */ |
0945d5ed | 775 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER, router->vrf_id); |
ba4eb1bc | 776 | |
4dfe9ad2 | 777 | zclient_send_reg_requests(zclient, router->vrf_id); |
ecbbc3a7 AK |
778 | |
779 | /* request for VxLAN BUM group addresses */ | |
780 | pim_zebra_vxlan_replay(); | |
48e8451b | 781 | } |
8711a53d | 782 | |
ac567a6f DS |
783 | static void pim_zebra_capabilities(struct zclient_capabilities *cap) |
784 | { | |
d6749d74 | 785 | router->role = cap->role; |
ac567a6f DS |
786 | } |
787 | ||
eb05883f | 788 | void pim_zebra_init(void) |
12e41d03 | 789 | { |
d62a17ae | 790 | /* Socket for receiving updates from Zebra daemon */ |
36417fcc | 791 | zclient = zclient_new(router->master, &zclient_options_default); |
d62a17ae | 792 | |
ac567a6f | 793 | zclient->zebra_capabilities = pim_zebra_capabilities; |
d62a17ae | 794 | zclient->zebra_connected = pim_zebra_connected; |
795 | zclient->router_id_update = pim_router_id_update_zebra; | |
796 | zclient->interface_add = pim_zebra_if_add; | |
797 | zclient->interface_delete = pim_zebra_if_del; | |
798 | zclient->interface_up = pim_zebra_if_state_up; | |
799 | zclient->interface_down = pim_zebra_if_state_down; | |
800 | zclient->interface_address_add = pim_zebra_if_address_add; | |
801 | zclient->interface_address_delete = pim_zebra_if_address_del; | |
ee568318 | 802 | zclient->interface_vrf_update = pim_zebra_interface_vrf_update; |
d62a17ae | 803 | zclient->nexthop_update = pim_parse_nexthop_update; |
af7b561b AK |
804 | zclient->vxlan_sg_add = pim_zebra_vxlan_sg_proc; |
805 | zclient->vxlan_sg_del = pim_zebra_vxlan_sg_proc; | |
d62a17ae | 806 | |
342213ea | 807 | zclient_init(zclient, ZEBRA_ROUTE_PIM, 0, &pimd_privs); |
d62a17ae | 808 | if (PIM_DEBUG_PIM_TRACE) { |
87270023 | 809 | zlog_notice("%s: zclient socket initialized", |
d62a17ae | 810 | __PRETTY_FUNCTION__); |
811 | } | |
812 | ||
813 | zclient_lookup_new(); | |
12e41d03 DL |
814 | } |
815 | ||
6f932b0c DS |
816 | void igmp_anysource_forward_start(struct pim_instance *pim, |
817 | struct igmp_group *group) | |
12e41d03 | 818 | { |
d62a17ae | 819 | struct igmp_source *source; |
820 | struct in_addr src_addr = {.s_addr = 0}; | |
821 | /* Any source (*,G) is forwarded only if mode is EXCLUDE {empty} */ | |
822 | zassert(group->group_filtermode_isexcl); | |
823 | zassert(listcount(group->group_source_list) < 1); | |
824 | ||
825 | source = source_new(group, src_addr); | |
826 | if (!source) { | |
827 | zlog_warn("%s: Failure to create * source", | |
828 | __PRETTY_FUNCTION__); | |
829 | return; | |
830 | } | |
831 | ||
6f932b0c | 832 | igmp_source_forward_start(pim, source); |
12e41d03 DL |
833 | } |
834 | ||
835 | void igmp_anysource_forward_stop(struct igmp_group *group) | |
836 | { | |
d62a17ae | 837 | struct igmp_source *source; |
838 | struct in_addr star = {.s_addr = 0}; | |
12e41d03 | 839 | |
d62a17ae | 840 | source = igmp_find_source_by_addr(group, star); |
841 | if (source) | |
842 | igmp_source_forward_stop(source); | |
12e41d03 DL |
843 | } |
844 | ||
6f439a70 DS |
845 | static void igmp_source_forward_reevaluate_one(struct pim_instance *pim, |
846 | struct igmp_source *source) | |
15a5dafe | 847 | { |
d62a17ae | 848 | struct prefix_sg sg; |
849 | struct igmp_group *group = source->source_group; | |
850 | struct pim_ifchannel *ch; | |
851 | ||
852 | if ((source->source_addr.s_addr != INADDR_ANY) | |
853 | || !IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) | |
854 | return; | |
855 | ||
856 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
857 | sg.src = source->source_addr; | |
858 | sg.grp = group->group_addr; | |
859 | ||
860 | ch = pim_ifchannel_find(group->group_igmp_sock->interface, &sg); | |
6f439a70 | 861 | if (pim_is_grp_ssm(pim, group->group_addr)) { |
d62a17ae | 862 | /* If SSM group withdraw local membership */ |
863 | if (ch | |
864 | && (ch->local_ifmembership == PIM_IFMEMBERSHIP_INCLUDE)) { | |
865 | if (PIM_DEBUG_PIM_EVENTS) | |
866 | zlog_debug( | |
867 | "local membership del for %s as G is now SSM", | |
868 | pim_str_sg_dump(&sg)); | |
869 | pim_ifchannel_local_membership_del( | |
870 | group->group_igmp_sock->interface, &sg); | |
871 | } | |
872 | } else { | |
873 | /* If ASM group add local membership */ | |
874 | if (!ch | |
875 | || (ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO)) { | |
876 | if (PIM_DEBUG_PIM_EVENTS) | |
877 | zlog_debug( | |
878 | "local membership add for %s as G is now ASM", | |
879 | pim_str_sg_dump(&sg)); | |
880 | pim_ifchannel_local_membership_add( | |
881 | group->group_igmp_sock->interface, &sg); | |
882 | } | |
883 | } | |
15a5dafe | 884 | } |
885 | ||
5d59e408 | 886 | void igmp_source_forward_reevaluate_all(struct pim_instance *pim) |
15a5dafe | 887 | { |
d62a17ae | 888 | struct interface *ifp; |
889 | ||
5d59e408 DS |
890 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
891 | struct pim_interface *pim_ifp = ifp->info; | |
892 | struct listnode *sock_node; | |
893 | struct igmp_sock *igmp; | |
894 | ||
895 | if (!pim_ifp) | |
d62a17ae | 896 | continue; |
897 | ||
5d59e408 DS |
898 | /* scan igmp sockets */ |
899 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, | |
900 | igmp)) { | |
901 | struct listnode *grpnode; | |
902 | struct igmp_group *grp; | |
903 | ||
904 | /* scan igmp groups */ | |
905 | for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, | |
906 | grpnode, grp)) { | |
907 | struct listnode *srcnode; | |
908 | struct igmp_source *src; | |
909 | ||
910 | /* scan group sources */ | |
911 | for (ALL_LIST_ELEMENTS_RO( | |
912 | grp->group_source_list, srcnode, | |
913 | src)) { | |
914 | igmp_source_forward_reevaluate_one(pim, | |
915 | src); | |
916 | } /* scan group sources */ | |
917 | } /* scan igmp groups */ | |
918 | } /* scan igmp sockets */ | |
919 | } /* scan interfaces */ | |
15a5dafe | 920 | } |
921 | ||
6f932b0c DS |
922 | void igmp_source_forward_start(struct pim_instance *pim, |
923 | struct igmp_source *source) | |
12e41d03 | 924 | { |
75c61a18 | 925 | struct pim_interface *pim_oif; |
d62a17ae | 926 | struct igmp_group *group; |
927 | struct prefix_sg sg; | |
928 | int result; | |
929 | int input_iface_vif_index = 0; | |
930 | ||
931 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
932 | sg.src = source->source_addr; | |
933 | sg.grp = source->source_group->group_addr; | |
934 | ||
935 | if (PIM_DEBUG_IGMP_TRACE) { | |
936 | zlog_debug( | |
937 | "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d", | |
938 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
939 | source->source_group->group_igmp_sock->fd, | |
940 | source->source_group->group_igmp_sock->interface->name, | |
941 | IGMP_SOURCE_TEST_FORWARDING(source->source_flags)); | |
942 | } | |
943 | ||
944 | /* Prevent IGMP interface from installing multicast route multiple | |
945 | times */ | |
946 | if (IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) { | |
947 | return; | |
8711a53d | 948 | } |
d62a17ae | 949 | |
950 | group = source->source_group; | |
75c61a18 DS |
951 | pim_oif = group->group_igmp_sock->interface->info; |
952 | if (!pim_oif) { | |
953 | if (PIM_DEBUG_IGMP_TRACE) { | |
954 | zlog_debug( | |
955 | "%s: multicast not enabled on oif=%s ?", | |
956 | __PRETTY_FUNCTION__, | |
957 | source->source_group->group_igmp_sock | |
958 | ->interface->name); | |
959 | } | |
960 | return; | |
961 | } | |
d62a17ae | 962 | |
963 | if (!source->source_channel_oil) { | |
964 | struct in_addr vif_source; | |
d1a1b09c | 965 | struct prefix src, grp; |
d62a17ae | 966 | struct pim_nexthop nexthop; |
967 | struct pim_upstream *up = NULL; | |
968 | ||
6f932b0c | 969 | if (!pim_rp_set_upstream_addr(pim, &vif_source, |
732c209c SP |
970 | source->source_addr, sg.grp)) { |
971 | /*Create a dummy channel oil */ | |
8a3e7e9e DS |
972 | source->source_channel_oil = pim_channel_oil_add( |
973 | pim, &sg, MAXVIFS, __PRETTY_FUNCTION__); | |
732c209c | 974 | } |
d62a17ae | 975 | |
732c209c | 976 | else { |
732c209c SP |
977 | src.family = AF_INET; |
978 | src.prefixlen = IPV4_MAX_BITLEN; | |
979 | src.u.prefix4 = vif_source; // RP or Src address | |
980 | grp.family = AF_INET; | |
981 | grp.prefixlen = IPV4_MAX_BITLEN; | |
982 | grp.u.prefix4 = sg.grp; | |
983 | ||
43763b11 DS |
984 | up = pim_upstream_find(pim, &sg); |
985 | if (up) { | |
986 | memcpy(&nexthop, &up->rpf.source_nexthop, | |
987 | sizeof(struct pim_nexthop)); | |
988 | pim_ecmp_nexthop_lookup(pim, &nexthop, &src, | |
989 | &grp, 0); | |
990 | if (nexthop.interface) | |
991 | input_iface_vif_index = | |
d62a17ae | 992 | pim_if_find_vifindex_by_ifindex( |
43763b11 DS |
993 | pim, |
994 | nexthop.interface->ifindex); | |
732c209c SP |
995 | } else |
996 | input_iface_vif_index = | |
43763b11 DS |
997 | pim_ecmp_fib_lookup_if_vif_index( |
998 | pim, &src, &grp); | |
d62a17ae | 999 | |
732c209c SP |
1000 | if (PIM_DEBUG_ZEBRA) { |
1001 | char buf2[INET_ADDRSTRLEN]; | |
d62a17ae | 1002 | |
732c209c SP |
1003 | pim_inet4_dump("<source?>", vif_source, buf2, |
1004 | sizeof(buf2)); | |
1005 | zlog_debug("%s: NHT %s vif_source %s vif_index:%d ", | |
d62a17ae | 1006 | __PRETTY_FUNCTION__, |
1007 | pim_str_sg_dump(&sg), | |
732c209c | 1008 | buf2, input_iface_vif_index); |
d62a17ae | 1009 | } |
d62a17ae | 1010 | |
732c209c SP |
1011 | if (input_iface_vif_index < 1) { |
1012 | if (PIM_DEBUG_IGMP_TRACE) { | |
1013 | char source_str[INET_ADDRSTRLEN]; | |
1014 | pim_inet4_dump("<source?>", | |
1015 | source->source_addr, | |
1016 | source_str, sizeof(source_str)); | |
1017 | zlog_debug( | |
1018 | "%s %s: could not find input interface for source %s", | |
1019 | __FILE__, __PRETTY_FUNCTION__, | |
1020 | source_str); | |
1021 | } | |
1022 | source->source_channel_oil = | |
8a3e7e9e DS |
1023 | pim_channel_oil_add( |
1024 | pim, &sg, MAXVIFS, | |
1025 | __PRETTY_FUNCTION__); | |
732c209c SP |
1026 | } |
1027 | ||
1028 | else { | |
1029 | /* | |
1030 | * Protect IGMP against adding looped MFC | |
1031 | * entries created by both source and receiver | |
1032 | * attached to the same interface. See TODO | |
50d06d9e | 1033 | * T22. Block only when the intf is non DR |
1034 | * DR must create upstream. | |
732c209c | 1035 | */ |
50d06d9e | 1036 | if ((input_iface_vif_index == |
1037 | pim_oif->mroute_vif_index) && | |
1038 | !(PIM_I_am_DR(pim_oif))) { | |
732c209c SP |
1039 | /* ignore request for looped MFC entry |
1040 | */ | |
1041 | if (PIM_DEBUG_IGMP_TRACE) { | |
1042 | zlog_debug( | |
1043 | "%s: ignoring request for looped MFC entry (S,G)=%s: igmp_sock=%d oif=%s vif_index=%d", | |
1044 | __PRETTY_FUNCTION__, | |
1045 | pim_str_sg_dump(&sg), | |
1046 | source->source_group | |
1047 | ->group_igmp_sock->fd, | |
1048 | source->source_group | |
1049 | ->group_igmp_sock | |
1050 | ->interface->name, | |
1051 | input_iface_vif_index); | |
1052 | } | |
1053 | return; | |
1054 | } | |
1055 | ||
1056 | source->source_channel_oil = | |
8a3e7e9e DS |
1057 | pim_channel_oil_add( |
1058 | pim, &sg, input_iface_vif_index, | |
1059 | __PRETTY_FUNCTION__); | |
732c209c SP |
1060 | if (!source->source_channel_oil) { |
1061 | if (PIM_DEBUG_IGMP_TRACE) { | |
1062 | zlog_debug( | |
1063 | "%s %s: could not create OIL for channel (S,G)=%s", | |
1064 | __FILE__, | |
1065 | __PRETTY_FUNCTION__, | |
1066 | pim_str_sg_dump(&sg)); | |
1067 | } | |
1068 | return; | |
1069 | } | |
d62a17ae | 1070 | } |
d62a17ae | 1071 | } |
8711a53d | 1072 | } |
d62a17ae | 1073 | |
1074 | result = pim_channel_add_oif(source->source_channel_oil, | |
1075 | group->group_igmp_sock->interface, | |
1076 | PIM_OIF_FLAG_PROTO_IGMP); | |
1077 | if (result) { | |
1078 | if (PIM_DEBUG_MROUTE) { | |
1079 | zlog_warn("%s: add_oif() failed with return=%d", | |
1080 | __func__, result); | |
1081 | } | |
1082 | return; | |
8711a53d | 1083 | } |
d62a17ae | 1084 | |
90a084e4 DS |
1085 | if (!(PIM_I_am_DR(pim_oif))) { |
1086 | if (PIM_DEBUG_IGMP_TRACE) | |
1087 | zlog_debug("%s: %s was received on %s interface but we are not DR for that interface", | |
1088 | __PRETTY_FUNCTION__, | |
1089 | pim_str_sg_dump(&sg), | |
1090 | group->group_igmp_sock->interface->name); | |
b96892db DS |
1091 | |
1092 | pim_channel_del_oif(source->source_channel_oil, | |
1093 | group->group_igmp_sock->interface, | |
1094 | PIM_OIF_FLAG_PROTO_IGMP); | |
75c61a18 | 1095 | return; |
90a084e4 | 1096 | } |
d62a17ae | 1097 | /* |
1098 | Feed IGMPv3-gathered local membership information into PIM | |
1099 | per-interface (S,G) state. | |
1100 | */ | |
1101 | if (!pim_ifchannel_local_membership_add( | |
75c61a18 | 1102 | group->group_igmp_sock->interface, &sg)) { |
d62a17ae | 1103 | if (PIM_DEBUG_MROUTE) |
1104 | zlog_warn("%s: Failure to add local membership for %s", | |
1105 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
b96892db DS |
1106 | |
1107 | pim_channel_del_oif(source->source_channel_oil, | |
1108 | group->group_igmp_sock->interface, | |
1109 | PIM_OIF_FLAG_PROTO_IGMP); | |
d62a17ae | 1110 | return; |
1111 | } | |
1112 | ||
1113 | IGMP_SOURCE_DO_FORWARDING(source->source_flags); | |
12e41d03 DL |
1114 | } |
1115 | ||
1116 | /* | |
1117 | igmp_source_forward_stop: stop fowarding, but keep the source | |
1118 | igmp_source_delete: stop fowarding, and delete the source | |
1119 | */ | |
1120 | void igmp_source_forward_stop(struct igmp_source *source) | |
1121 | { | |
d62a17ae | 1122 | struct igmp_group *group; |
1123 | struct prefix_sg sg; | |
1124 | int result; | |
1125 | ||
1126 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
1127 | sg.src = source->source_addr; | |
1128 | sg.grp = source->source_group->group_addr; | |
1129 | ||
1130 | if (PIM_DEBUG_IGMP_TRACE) { | |
1131 | zlog_debug( | |
1132 | "%s: (S,G)=%s igmp_sock=%d oif=%s fwd=%d", | |
1133 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
1134 | source->source_group->group_igmp_sock->fd, | |
1135 | source->source_group->group_igmp_sock->interface->name, | |
1136 | IGMP_SOURCE_TEST_FORWARDING(source->source_flags)); | |
1137 | } | |
1138 | ||
1139 | /* Prevent IGMP interface from removing multicast route multiple | |
1140 | times */ | |
1141 | if (!IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) { | |
1142 | return; | |
1143 | } | |
1144 | ||
1145 | group = source->source_group; | |
1146 | ||
1147 | /* | |
1148 | It appears that in certain circumstances that | |
1149 | igmp_source_forward_stop is called when IGMP forwarding | |
1150 | was not enabled in oif_flags for this outgoing interface. | |
1151 | Possibly because of multiple calls. When that happens, we | |
1152 | enter the below if statement and this function returns early | |
1153 | which in turn triggers the calling function to assert. | |
1154 | Making the call to pim_channel_del_oif and ignoring the return code | |
1155 | fixes the issue without ill effect, similar to | |
1156 | pim_forward_stop below. | |
1157 | */ | |
1158 | result = pim_channel_del_oif(source->source_channel_oil, | |
1159 | group->group_igmp_sock->interface, | |
1160 | PIM_OIF_FLAG_PROTO_IGMP); | |
1161 | if (result) { | |
1162 | if (PIM_DEBUG_IGMP_TRACE) | |
1163 | zlog_debug( | |
1164 | "%s: pim_channel_del_oif() failed with return=%d", | |
1165 | __func__, result); | |
1166 | return; | |
1167 | } | |
1168 | ||
1169 | /* | |
1170 | Feed IGMPv3-gathered local membership information into PIM | |
1171 | per-interface (S,G) state. | |
1172 | */ | |
1173 | pim_ifchannel_local_membership_del(group->group_igmp_sock->interface, | |
1174 | &sg); | |
1175 | ||
1176 | IGMP_SOURCE_DONT_FORWARDING(source->source_flags); | |
12e41d03 DL |
1177 | } |
1178 | ||
1179 | void pim_forward_start(struct pim_ifchannel *ch) | |
1180 | { | |
d62a17ae | 1181 | struct pim_upstream *up = ch->upstream; |
1182 | uint32_t mask = PIM_OIF_FLAG_PROTO_PIM; | |
1183 | int input_iface_vif_index = 0; | |
6f932b0c DS |
1184 | struct pim_instance *pim; |
1185 | struct pim_interface *pim_ifp; | |
1186 | ||
1187 | pim_ifp = ch->interface->info; | |
1188 | pim = pim_ifp->pim; | |
d62a17ae | 1189 | |
1190 | if (PIM_DEBUG_PIM_TRACE) { | |
1191 | char source_str[INET_ADDRSTRLEN]; | |
1192 | char group_str[INET_ADDRSTRLEN]; | |
1193 | char upstream_str[INET_ADDRSTRLEN]; | |
1194 | ||
1195 | pim_inet4_dump("<source?>", ch->sg.src, source_str, | |
1196 | sizeof(source_str)); | |
1197 | pim_inet4_dump("<group?>", ch->sg.grp, group_str, | |
1198 | sizeof(group_str)); | |
1199 | pim_inet4_dump("<upstream?>", up->upstream_addr, upstream_str, | |
1200 | sizeof(upstream_str)); | |
1201 | zlog_debug("%s: (S,G)=(%s,%s) oif=%s (%s)", __PRETTY_FUNCTION__, | |
1202 | source_str, group_str, ch->interface->name, | |
732c209c | 1203 | inet_ntoa(up->upstream_addr)); |
d62a17ae | 1204 | } |
1205 | ||
1206 | /* Resolve IIF for upstream as mroute_del sets mfcc_parent to MAXVIFS, | |
1207 | as part of mroute_del called by pim_forward_stop. | |
1208 | */ | |
732c209c | 1209 | if ((up->upstream_addr.s_addr != INADDR_ANY) && (!up->channel_oil)) { |
d1a1b09c | 1210 | struct prefix src, grp; |
d62a17ae | 1211 | |
d62a17ae | 1212 | grp.family = AF_INET; |
1213 | grp.prefixlen = IPV4_MAX_BITLEN; | |
1214 | grp.u.prefix4 = up->sg.grp; | |
43763b11 DS |
1215 | src.family = AF_INET; |
1216 | src.prefixlen = IPV4_MAX_BITLEN; | |
1217 | src.u.prefix4 = up->sg.src; | |
1218 | ||
1219 | if (pim_ecmp_nexthop_lookup(pim, &up->rpf.source_nexthop, &src, | |
1220 | &grp, 0)) | |
1221 | input_iface_vif_index = pim_if_find_vifindex_by_ifindex( | |
1222 | pim, up->rpf.source_nexthop.interface->ifindex); | |
d62a17ae | 1223 | |
1224 | if (input_iface_vif_index < 1) { | |
1225 | if (PIM_DEBUG_PIM_TRACE) { | |
1226 | char source_str[INET_ADDRSTRLEN]; | |
1227 | pim_inet4_dump("<source?>", up->sg.src, | |
1228 | source_str, sizeof(source_str)); | |
1229 | zlog_debug( | |
1230 | "%s %s: could not find input interface for source %s", | |
1231 | __FILE__, __PRETTY_FUNCTION__, | |
1232 | source_str); | |
1233 | } | |
46dd6edb DS |
1234 | pim_channel_oil_change_iif(pim, up->channel_oil, |
1235 | MAXVIFS, | |
1236 | __PRETTY_FUNCTION__); | |
d62a17ae | 1237 | } |
732c209c | 1238 | |
11884868 | 1239 | else |
46dd6edb DS |
1240 | pim_channel_oil_change_iif(pim, up->channel_oil, |
1241 | input_iface_vif_index, | |
1242 | __PRETTY_FUNCTION__); | |
732c209c | 1243 | |
d62a17ae | 1244 | if (PIM_DEBUG_TRACE) { |
7cfc7bcf | 1245 | struct interface *in_intf = pim_if_find_by_vif_index( |
6f932b0c | 1246 | pim, input_iface_vif_index); |
d62a17ae | 1247 | zlog_debug( |
1248 | "%s: Update channel_oil IIF %s VIFI %d entry %s ", | |
1249 | __PRETTY_FUNCTION__, | |
732c209c | 1250 | in_intf ? in_intf->name : "Unknown", |
d62a17ae | 1251 | input_iface_vif_index, up->sg_str); |
1252 | } | |
d62a17ae | 1253 | } |
1254 | ||
1255 | if (up->flags & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
1256 | mask = PIM_OIF_FLAG_PROTO_IGMP; | |
1257 | ||
1258 | pim_channel_add_oif(up->channel_oil, ch->interface, mask); | |
12e41d03 DL |
1259 | } |
1260 | ||
aabb9a2f | 1261 | void pim_forward_stop(struct pim_ifchannel *ch, bool install_it) |
12e41d03 | 1262 | { |
d62a17ae | 1263 | struct pim_upstream *up = ch->upstream; |
12e41d03 | 1264 | |
d62a17ae | 1265 | if (PIM_DEBUG_PIM_TRACE) { |
aabb9a2f DS |
1266 | zlog_debug("%s: (S,G)=%s oif=%s install_it: %d installed: %d", |
1267 | __PRETTY_FUNCTION__, ch->sg_str, ch->interface->name, | |
1268 | install_it, up->channel_oil->installed); | |
d62a17ae | 1269 | } |
12e41d03 | 1270 | |
2164ed5d DS |
1271 | /* |
1272 | * If a channel is being removed, check to see if we still need | |
1273 | * to inherit the interface. If so make sure it is added in | |
1274 | */ | |
1275 | if (pim_upstream_evaluate_join_desired_interface(up, ch, ch->parent)) | |
1276 | pim_channel_add_oif(up->channel_oil, ch->interface, | |
1277 | PIM_OIF_FLAG_PROTO_PIM); | |
1278 | else | |
1279 | pim_channel_del_oif(up->channel_oil, ch->interface, | |
1280 | PIM_OIF_FLAG_PROTO_PIM); | |
aabb9a2f DS |
1281 | |
1282 | if (install_it && !up->channel_oil->installed) | |
1283 | pim_mroute_add(up->channel_oil, __PRETTY_FUNCTION__); | |
12e41d03 | 1284 | } |
8799b66b | 1285 | |
d62a17ae | 1286 | void pim_zebra_zclient_update(struct vty *vty) |
8799b66b | 1287 | { |
d62a17ae | 1288 | vty_out(vty, "Zclient update socket: "); |
1289 | ||
1290 | if (zclient) { | |
1291 | vty_out(vty, "%d failures=%d\n", zclient->sock, zclient->fail); | |
1292 | } else { | |
1293 | vty_out(vty, "<null zclient>\n"); | |
1294 | } | |
8799b66b | 1295 | } |
1bc98276 | 1296 | |
d62a17ae | 1297 | struct zclient *pim_zebra_zclient_get(void) |
1bc98276 | 1298 | { |
d62a17ae | 1299 | if (zclient) |
1300 | return zclient; | |
1301 | else | |
1302 | return NULL; | |
1bc98276 | 1303 | } |