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8f5f5e91 DS |
1 | /* |
2 | * PIM for Quagga | |
3 | * Copyright (C) 2015 Cumulus Networks, Inc. | |
4 | * Donald Sharp | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
896014f4 DL |
15 | * |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
8f5f5e91 DS |
19 | */ |
20 | #include <zebra.h> | |
21 | ||
9bf3c633 | 22 | #include "lib/json.h" |
54b97c74 | 23 | #include "log.h" |
8f5f5e91 | 24 | #include "network.h" |
744d91b3 | 25 | #include "if.h" |
36d6bd7d DS |
26 | #include "linklist.h" |
27 | #include "prefix.h" | |
28 | #include "memory.h" | |
00d07c6f DS |
29 | #include "vty.h" |
30 | #include "vrf.h" | |
dfe43e25 | 31 | #include "plist.h" |
cba44481 | 32 | #include "nexthop.h" |
89b68082 | 33 | #include "table.h" |
3613d898 | 34 | #include "lib_errors.h" |
8f5f5e91 DS |
35 | |
36 | #include "pimd.h" | |
993e3d8e | 37 | #include "pim_instance.h" |
75a26779 | 38 | #include "pim_vty.h" |
54b97c74 | 39 | #include "pim_str.h" |
7176984f | 40 | #include "pim_iface.h" |
8f5f5e91 | 41 | #include "pim_rp.h" |
ed66602c | 42 | #include "pim_rpf.h" |
13afbd05 | 43 | #include "pim_sock.h" |
36d6bd7d | 44 | #include "pim_memory.h" |
e34e07e6 | 45 | #include "pim_neighbor.h" |
7667c556 | 46 | #include "pim_msdp.h" |
1bc98276 | 47 | #include "pim_nht.h" |
28309df0 SP |
48 | #include "pim_mroute.h" |
49 | #include "pim_oil.h" | |
50 | #include "pim_zebra.h" | |
d0e418b4 | 51 | #include "pim_bsm.h" |
c6ced474 | 52 | #include "pim_util.h" |
8c0a7680 | 53 | #include "pim_ssm.h" |
f1ebd3db | 54 | #include "termtable.h" |
36d6bd7d | 55 | |
c2cf4b02 DS |
56 | /* Cleanup pim->rpf_hash each node data */ |
57 | void pim_rp_list_hash_clean(void *data) | |
58 | { | |
7c591950 | 59 | struct pim_nexthop_cache *pnc = (struct pim_nexthop_cache *)data; |
c2cf4b02 | 60 | |
6a154c88 | 61 | list_delete(&pnc->rp_list); |
6e1ef388 | 62 | |
7c591950 DS |
63 | hash_clean(pnc->upstream_hash, NULL); |
64 | hash_free(pnc->upstream_hash); | |
65 | pnc->upstream_hash = NULL; | |
1159c202 SP |
66 | if (pnc->nexthop) |
67 | nexthops_free(pnc->nexthop); | |
6e1ef388 DS |
68 | |
69 | XFREE(MTYPE_PIM_NEXTHOP_CACHE, pnc); | |
c2cf4b02 DS |
70 | } |
71 | ||
d62a17ae | 72 | static void pim_rp_info_free(struct rp_info *rp_info) |
36d6bd7d | 73 | { |
0a22ddfb | 74 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); |
ff823fc9 | 75 | |
d62a17ae | 76 | XFREE(MTYPE_PIM_RP, rp_info); |
36d6bd7d DS |
77 | } |
78 | ||
d62a17ae | 79 | int pim_rp_list_cmp(void *v1, void *v2) |
36d6bd7d | 80 | { |
d62a17ae | 81 | struct rp_info *rp1 = (struct rp_info *)v1; |
82 | struct rp_info *rp2 = (struct rp_info *)v2; | |
5d1d18a1 | 83 | int ret; |
d62a17ae | 84 | |
85 | /* | |
86 | * Sort by RP IP address | |
87 | */ | |
b63192cf | 88 | ret = pim_addr_cmp(rp1->rp.rpf_addr, rp2->rp.rpf_addr); |
5d1d18a1 DL |
89 | if (ret) |
90 | return ret; | |
d62a17ae | 91 | |
92 | /* | |
93 | * Sort by group IP address | |
94 | */ | |
5d1d18a1 DL |
95 | ret = prefix_cmp(&rp1->group, &rp2->group); |
96 | if (ret) | |
97 | return ret; | |
d62a17ae | 98 | |
99 | return 0; | |
36d6bd7d DS |
100 | } |
101 | ||
d9c9a9ee | 102 | void pim_rp_init(struct pim_instance *pim) |
36d6bd7d | 103 | { |
d62a17ae | 104 | struct rp_info *rp_info; |
89b68082 | 105 | struct route_node *rn; |
36d6bd7d | 106 | |
d9c9a9ee DS |
107 | pim->rp_list = list_new(); |
108 | pim->rp_list->del = (void (*)(void *))pim_rp_info_free; | |
109 | pim->rp_list->cmp = pim_rp_list_cmp; | |
36d6bd7d | 110 | |
89b68082 | 111 | pim->rp_table = route_table_init(); |
89b68082 | 112 | |
d62a17ae | 113 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); |
36d6bd7d | 114 | |
c6ced474 | 115 | if (!pim_get_all_mcast_group(&rp_info->group)) { |
450971aa | 116 | flog_err(EC_LIB_DEVELOPMENT, |
5d1d18a1 | 117 | "Unable to convert all-multicast prefix"); |
6a154c88 | 118 | list_delete(&pim->rp_list); |
89b68082 | 119 | route_table_finish(pim->rp_table); |
2e8345c1 DS |
120 | XFREE(MTYPE_PIM_RP, rp_info); |
121 | return; | |
122 | } | |
b63192cf | 123 | rp_info->rp.rpf_addr = PIMADDR_ANY; |
36d6bd7d | 124 | |
d9c9a9ee | 125 | listnode_add(pim->rp_list, rp_info); |
89b68082 DS |
126 | |
127 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
89b68082 | 128 | rn->info = rp_info; |
23fc858a | 129 | if (PIM_DEBUG_PIM_TRACE) |
5d1d18a1 DL |
130 | zlog_debug("Allocated: %p for rp_info: %p(%pFX) Lock: %d", rn, |
131 | rp_info, &rp_info->group, | |
132 | route_node_get_lock_count(rn)); | |
36d6bd7d DS |
133 | } |
134 | ||
d9c9a9ee | 135 | void pim_rp_free(struct pim_instance *pim) |
36d6bd7d | 136 | { |
e4e52805 DS |
137 | if (pim->rp_table) |
138 | route_table_finish(pim->rp_table); | |
139 | pim->rp_table = NULL; | |
906640db | 140 | |
141 | if (pim->rp_list) | |
142 | list_delete(&pim->rp_list); | |
36d6bd7d DS |
143 | } |
144 | ||
dfe43e25 DW |
145 | /* |
146 | * Given an RP's prefix-list, return the RP's rp_info for that prefix-list | |
147 | */ | |
d9c9a9ee | 148 | static struct rp_info *pim_rp_find_prefix_list(struct pim_instance *pim, |
1db07606 | 149 | pim_addr rp, const char *plist) |
36d6bd7d | 150 | { |
d62a17ae | 151 | struct listnode *node; |
152 | struct rp_info *rp_info; | |
153 | ||
d9c9a9ee | 154 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
b63192cf | 155 | if ((!pim_addr_cmp(rp, rp_info->rp.rpf_addr)) && |
1db07606 | 156 | rp_info->plist && strcmp(rp_info->plist, plist) == 0) { |
d62a17ae | 157 | return rp_info; |
158 | } | |
159 | } | |
160 | ||
161 | return NULL; | |
36d6bd7d DS |
162 | } |
163 | ||
dfe43e25 DW |
164 | /* |
165 | * Return true if plist is used by any rp_info | |
166 | */ | |
d9c9a9ee | 167 | static int pim_rp_prefix_list_used(struct pim_instance *pim, const char *plist) |
dfe43e25 | 168 | { |
d62a17ae | 169 | struct listnode *node; |
170 | struct rp_info *rp_info; | |
171 | ||
d9c9a9ee | 172 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 173 | if (rp_info->plist && strcmp(rp_info->plist, plist) == 0) { |
174 | return 1; | |
175 | } | |
176 | } | |
177 | ||
178 | return 0; | |
dfe43e25 DW |
179 | } |
180 | ||
181 | /* | |
d62a17ae | 182 | * Given an RP's address, return the RP's rp_info that is an exact match for |
183 | * 'group' | |
dfe43e25 | 184 | */ |
fd5540ea | 185 | static struct rp_info *pim_rp_find_exact(struct pim_instance *pim, pim_addr rp, |
123214ef | 186 | const struct prefix *group) |
36d6bd7d | 187 | { |
d62a17ae | 188 | struct listnode *node; |
189 | struct rp_info *rp_info; | |
36d6bd7d | 190 | |
d9c9a9ee | 191 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
b63192cf | 192 | if ((!pim_addr_cmp(rp, rp_info->rp.rpf_addr)) && |
fd5540ea | 193 | prefix_same(&rp_info->group, group)) |
d62a17ae | 194 | return rp_info; |
195 | } | |
54b97c74 | 196 | |
d62a17ae | 197 | return NULL; |
36d6bd7d DS |
198 | } |
199 | ||
2b6b16fc DL |
200 | /* |
201 | * XXX: long-term issue: we don't actually have a good "ip address-list" | |
202 | * implementation. ("access-list XYZ" is the closest but honestly it's | |
203 | * kinda garbage.) | |
204 | * | |
205 | * So it's using a prefix-list to match an address here, which causes very | |
206 | * unexpected results for the user since prefix-lists by default only match | |
207 | * when the prefix length is an exact match too. i.e. you'd have to add the | |
208 | * "le 32" and do "ip prefix-list foo permit 10.0.0.0/24 le 32" | |
209 | * | |
210 | * To avoid this pitfall, this code uses "address_mode = true" for the prefix | |
211 | * list match (this is the only user for that.) | |
212 | * | |
213 | * In the long run, we need to add a "ip address-list", but that's a wholly | |
214 | * separate bag of worms, and existing configs using ip prefix-list would | |
215 | * drop into the UX pitfall. | |
216 | */ | |
217 | ||
218 | #include "lib/plist_int.h" | |
219 | ||
dfe43e25 DW |
220 | /* |
221 | * Given a group, return the rp_info for that group | |
222 | */ | |
28309df0 | 223 | struct rp_info *pim_rp_find_match_group(struct pim_instance *pim, |
123214ef | 224 | const struct prefix *group) |
36d6bd7d | 225 | { |
d62a17ae | 226 | struct listnode *node; |
b77b1550 | 227 | struct rp_info *best = NULL; |
d62a17ae | 228 | struct rp_info *rp_info; |
229 | struct prefix_list *plist; | |
2b6b16fc DL |
230 | const struct prefix *bp; |
231 | const struct prefix_list_entry *entry; | |
89b68082 | 232 | struct route_node *rn; |
d62a17ae | 233 | |
4646b86a | 234 | bp = NULL; |
d9c9a9ee | 235 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 236 | if (rp_info->plist) { |
fd5540ea | 237 | plist = prefix_list_lookup(PIM_AFI, rp_info->plist); |
d62a17ae | 238 | |
2b6b16fc DL |
239 | if (prefix_list_apply_ext(plist, &entry, group, true) |
240 | == PREFIX_DENY || !entry) | |
b77b1550 DS |
241 | continue; |
242 | ||
243 | if (!best) { | |
244 | best = rp_info; | |
2b6b16fc | 245 | bp = &entry->prefix; |
b77b1550 DS |
246 | continue; |
247 | } | |
248 | ||
2b6b16fc | 249 | if (bp && bp->prefixlen < entry->prefix.prefixlen) { |
b77b1550 | 250 | best = rp_info; |
2b6b16fc | 251 | bp = &entry->prefix; |
b77b1550 | 252 | } |
d62a17ae | 253 | } |
254 | } | |
255 | ||
89b68082 DS |
256 | rn = route_node_match(pim->rp_table, group); |
257 | if (!rn) { | |
af4c2728 | 258 | flog_err( |
450971aa | 259 | EC_LIB_DEVELOPMENT, |
1d5453d6 | 260 | "%s: BUG We should have found default group information", |
5e81f5dd | 261 | __func__); |
89b68082 DS |
262 | return best; |
263 | } | |
264 | ||
265 | rp_info = rn->info; | |
cf568522 DS |
266 | if (PIM_DEBUG_PIM_TRACE) { |
267 | if (best) | |
268 | zlog_debug( | |
269 | "Lookedup(%pFX): prefix_list match %s, rn %p found: %pFX", | |
270 | group, best->plist, rn, &rp_info->group); | |
271 | else | |
272 | zlog_debug("Lookedup(%pFX): rn %p found:%pFX", group, | |
273 | rn, &rp_info->group); | |
274 | } | |
89b68082 | 275 | |
260c92c8 | 276 | route_unlock_node(rn); |
277 | ||
94dc0c4e DS |
278 | /* |
279 | * rp's with prefix lists have the group as 224.0.0.0/4 which will | |
280 | * match anything. So if we have a rp_info that should match a prefix | |
281 | * list then if we do match then best should be the answer( even | |
282 | * if it is NULL ) | |
283 | */ | |
284 | if (!rp_info || (rp_info && rp_info->plist)) | |
285 | return best; | |
286 | ||
287 | /* | |
288 | * So we have a non plist rp_info found in the lookup and no plists | |
289 | * at all to be choosen, return it! | |
290 | */ | |
89b68082 DS |
291 | if (!best) |
292 | return rp_info; | |
293 | ||
94dc0c4e DS |
294 | /* |
295 | * If we have a matching non prefix list and a matching prefix | |
296 | * list we should return the actual rp_info that has the LPM | |
297 | * If they are equal, use the prefix-list( but let's hope | |
298 | * the end-operator doesn't do this ) | |
299 | */ | |
300 | if (rp_info->group.prefixlen > bp->prefixlen) | |
89b68082 DS |
301 | best = rp_info; |
302 | ||
b77b1550 | 303 | return best; |
36d6bd7d | 304 | } |
75a26779 | 305 | |
dfe43e25 DW |
306 | /* |
307 | * When the user makes "ip pim rp" configuration changes or if they change the | |
308 | * prefix-list(s) used by these statements we must tickle the upstream state | |
309 | * for each group to make them re-lookup who their RP should be. | |
310 | * | |
311 | * This is a placeholder function for now. | |
312 | */ | |
e7016ceb | 313 | void pim_rp_refresh_group_to_rp_mapping(struct pim_instance *pim) |
dfe43e25 | 314 | { |
472ad383 | 315 | pim_msdp_i_am_rp_changed(pim); |
a749b900 | 316 | pim_upstream_reeval_use_rpt(pim); |
dfe43e25 DW |
317 | } |
318 | ||
d9c9a9ee DS |
319 | void pim_rp_prefix_list_update(struct pim_instance *pim, |
320 | struct prefix_list *plist) | |
dfe43e25 | 321 | { |
d62a17ae | 322 | struct listnode *node; |
323 | struct rp_info *rp_info; | |
324 | int refresh_needed = 0; | |
325 | ||
d9c9a9ee | 326 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 327 | if (rp_info->plist |
328 | && strcmp(rp_info->plist, prefix_list_name(plist)) == 0) { | |
329 | refresh_needed = 1; | |
330 | break; | |
331 | } | |
332 | } | |
333 | ||
334 | if (refresh_needed) | |
472ad383 | 335 | pim_rp_refresh_group_to_rp_mapping(pim); |
dfe43e25 DW |
336 | } |
337 | ||
d62a17ae | 338 | static int pim_rp_check_interface_addrs(struct rp_info *rp_info, |
339 | struct pim_interface *pim_ifp) | |
7176984f | 340 | { |
d62a17ae | 341 | struct listnode *node; |
342 | struct pim_secondary_addr *sec_addr; | |
c6c615c1 | 343 | pim_addr sec_paddr; |
034db86b | 344 | |
b63192cf | 345 | if (!pim_addr_cmp(pim_ifp->primary_address, rp_info->rp.rpf_addr)) |
d62a17ae | 346 | return 1; |
7176984f | 347 | |
d62a17ae | 348 | if (!pim_ifp->sec_addr_list) { |
349 | return 0; | |
350 | } | |
7176984f | 351 | |
d62a17ae | 352 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
c6c615c1 MR |
353 | sec_paddr = pim_addr_from_prefix(&sec_addr->addr); |
354 | /* If an RP-address is self, It should be enough to say | |
355 | * I am RP the prefix-length should not matter here */ | |
356 | if (!pim_addr_cmp(sec_paddr, rp_info->rp.rpf_addr)) | |
d62a17ae | 357 | return 1; |
d62a17ae | 358 | } |
7176984f | 359 | |
d62a17ae | 360 | return 0; |
7176984f | 361 | } |
362 | ||
fec883d9 DS |
363 | static void pim_rp_check_interfaces(struct pim_instance *pim, |
364 | struct rp_info *rp_info) | |
00d07c6f | 365 | { |
d62a17ae | 366 | struct interface *ifp; |
00d07c6f | 367 | |
d62a17ae | 368 | rp_info->i_am_rp = 0; |
451fda4f | 369 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 370 | struct pim_interface *pim_ifp = ifp->info; |
00d07c6f | 371 | |
d62a17ae | 372 | if (!pim_ifp) |
373 | continue; | |
00d07c6f | 374 | |
d62a17ae | 375 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { |
376 | rp_info->i_am_rp = 1; | |
377 | } | |
378 | } | |
00d07c6f DS |
379 | } |
380 | ||
28309df0 SP |
381 | void pim_upstream_update(struct pim_instance *pim, struct pim_upstream *up) |
382 | { | |
383 | struct pim_rpf old_rpf; | |
384 | enum pim_rpf_result rpf_result; | |
5d99ebea DL |
385 | pim_addr old_upstream_addr; |
386 | pim_addr new_upstream_addr; | |
28309df0 SP |
387 | |
388 | old_upstream_addr = up->upstream_addr; | |
389 | pim_rp_set_upstream_addr(pim, &new_upstream_addr, up->sg.src, | |
390 | up->sg.grp); | |
391 | ||
23fc858a | 392 | if (PIM_DEBUG_PIM_TRACE) |
5d1d18a1 | 393 | zlog_debug("%s: pim upstream update for old upstream %pPA", |
ee2bbf7c | 394 | __func__, &old_upstream_addr); |
28309df0 | 395 | |
5d99ebea | 396 | if (!pim_addr_cmp(old_upstream_addr, new_upstream_addr)) |
28309df0 SP |
397 | return; |
398 | ||
399 | /* Lets consider a case, where a PIM upstream has a better RP as a | |
400 | * result of a new RP configuration with more precise group range. | |
401 | * This upstream has to be added to the upstream hash of new RP's | |
402 | * NHT(pnc) and has to be removed from old RP's NHT upstream hash | |
403 | */ | |
5d99ebea | 404 | if (!pim_addr_is_any(old_upstream_addr)) { |
28309df0 | 405 | /* Deregister addr with Zebra NHT */ |
2dbe669b | 406 | if (PIM_DEBUG_PIM_TRACE) |
15569c58 | 407 | zlog_debug( |
b63192cf | 408 | "%s: Deregister upstream %s addr %pPA with Zebra NHT", |
409 | __func__, up->sg_str, &old_upstream_addr); | |
e6e53006 | 410 | pim_delete_tracked_nexthop(pim, old_upstream_addr, up, NULL); |
28309df0 SP |
411 | } |
412 | ||
413 | /* Update the upstream address */ | |
414 | up->upstream_addr = new_upstream_addr; | |
415 | ||
416 | old_rpf.source_nexthop.interface = up->rpf.source_nexthop.interface; | |
417 | ||
8c55c132 | 418 | rpf_result = pim_rpf_update(pim, up, &old_rpf, __func__); |
28309df0 | 419 | if (rpf_result == PIM_RPF_FAILURE) |
15569c58 | 420 | pim_mroute_del(up->channel_oil, __func__); |
28309df0 SP |
421 | |
422 | /* update kernel multicast forwarding cache (MFC) */ | |
7984af18 AK |
423 | if (up->rpf.source_nexthop.interface && up->channel_oil) |
424 | pim_upstream_mroute_iif_update(up->channel_oil, __func__); | |
28309df0 | 425 | |
b36576e4 AK |
426 | if (rpf_result == PIM_RPF_CHANGED || |
427 | (rpf_result == PIM_RPF_FAILURE && | |
428 | old_rpf.source_nexthop.interface)) | |
28309df0 SP |
429 | pim_zebra_upstream_rpf_changed(pim, up, &old_rpf); |
430 | ||
28309df0 SP |
431 | } |
432 | ||
6ed1cea1 | 433 | int pim_rp_new(struct pim_instance *pim, pim_addr rp_addr, struct prefix group, |
cc144e8b | 434 | const char *plist, enum rp_source rp_src_flag) |
d0e418b4 | 435 | { |
436 | int result = 0; | |
d62a17ae | 437 | struct rp_info *rp_info; |
438 | struct rp_info *rp_all; | |
439 | struct prefix group_all; | |
440 | struct listnode *node, *nnode; | |
441 | struct rp_info *tmp_rp_info; | |
442 | char buffer[BUFSIZ]; | |
b63192cf | 443 | pim_addr nht_p; |
94dc0c4e | 444 | struct route_node *rn = NULL; |
28309df0 | 445 | struct pim_upstream *up; |
62596d9a | 446 | bool upstream_updated = false; |
d62a17ae | 447 | |
6ed1cea1 | 448 | if (pim_addr_is_any(rp_addr)) |
1e0d1c25 DS |
449 | return PIM_RP_BAD_ADDRESS; |
450 | ||
d62a17ae | 451 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); |
d62a17ae | 452 | |
b63192cf | 453 | rp_info->rp.rpf_addr = rp_addr; |
d0e418b4 | 454 | prefix_copy(&rp_info->group, &group); |
455 | rp_info->rp_src = rp_src_flag; | |
d62a17ae | 456 | |
d62a17ae | 457 | if (plist) { |
458 | /* | |
459 | * Return if the prefix-list is already configured for this RP | |
460 | */ | |
1db07606 | 461 | if (pim_rp_find_prefix_list(pim, rp_addr, plist)) { |
d62a17ae | 462 | XFREE(MTYPE_PIM_RP, rp_info); |
463 | return PIM_SUCCESS; | |
464 | } | |
465 | ||
466 | /* | |
467 | * Barf if the prefix-list is already configured for an RP | |
468 | */ | |
d9c9a9ee | 469 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 470 | XFREE(MTYPE_PIM_RP, rp_info); |
471 | return PIM_RP_PFXLIST_IN_USE; | |
472 | } | |
473 | ||
474 | /* | |
475 | * Free any existing rp_info entries for this RP | |
476 | */ | |
d9c9a9ee | 477 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 478 | tmp_rp_info)) { |
b63192cf | 479 | if (!pim_addr_cmp(rp_info->rp.rpf_addr, |
480 | tmp_rp_info->rp.rpf_addr)) { | |
d62a17ae | 481 | if (tmp_rp_info->plist) |
99384c6e | 482 | pim_rp_del_config(pim, rp_addr, NULL, |
d0e418b4 | 483 | tmp_rp_info->plist); |
d62a17ae | 484 | else |
d0e418b4 | 485 | pim_rp_del_config( |
99384c6e | 486 | pim, rp_addr, |
d62a17ae | 487 | prefix2str(&tmp_rp_info->group, |
488 | buffer, BUFSIZ), | |
489 | NULL); | |
490 | } | |
491 | } | |
492 | ||
493 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
494 | } else { | |
89b68082 | 495 | |
c6ced474 | 496 | if (!pim_get_all_mcast_group(&group_all)) { |
2e8345c1 DS |
497 | XFREE(MTYPE_PIM_RP, rp_info); |
498 | return PIM_GROUP_BAD_ADDRESS; | |
499 | } | |
d9c9a9ee | 500 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 501 | |
502 | /* | |
503 | * Barf if group is a non-multicast subnet | |
504 | */ | |
505 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
506 | XFREE(MTYPE_PIM_RP, rp_info); | |
507 | return PIM_GROUP_BAD_ADDRESS; | |
508 | } | |
509 | ||
510 | /* | |
511 | * Remove any prefix-list rp_info entries for this RP | |
512 | */ | |
d9c9a9ee | 513 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 514 | tmp_rp_info)) { |
6ed1cea1 | 515 | if (tmp_rp_info->plist && |
b63192cf | 516 | (!pim_addr_cmp(rp_info->rp.rpf_addr, |
517 | tmp_rp_info->rp.rpf_addr))) { | |
99384c6e | 518 | pim_rp_del_config(pim, rp_addr, NULL, |
d0e418b4 | 519 | tmp_rp_info->plist); |
d62a17ae | 520 | } |
521 | } | |
522 | ||
523 | /* | |
b369d0cc | 524 | * Take over the 224.0.0.0/4 group if the rp is INADDR_ANY |
d62a17ae | 525 | */ |
cc144e8b | 526 | if (prefix_same(&rp_all->group, &rp_info->group) && |
527 | pim_rpf_addr_is_inaddr_any(&rp_all->rp)) { | |
d62a17ae | 528 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; |
d0e418b4 | 529 | rp_all->rp_src = rp_src_flag; |
d62a17ae | 530 | XFREE(MTYPE_PIM_RP, rp_info); |
531 | ||
532 | /* Register addr with Zebra NHT */ | |
6ed1cea1 | 533 | nht_p = rp_all->rp.rpf_addr; |
2dbe669b | 534 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 535 | zlog_debug( |
b63192cf | 536 | "%s: NHT Register rp_all addr %pPA grp %pFX ", |
2dbe669b | 537 | __func__, &nht_p, &rp_all->group); |
28309df0 | 538 | |
dd3364cb | 539 | frr_each (rb_pim_upstream, &pim->upstream_head, up) { |
28309df0 SP |
540 | /* Find (*, G) upstream whose RP is not |
541 | * configured yet | |
542 | */ | |
01adb431 | 543 | if (pim_addr_is_any(up->upstream_addr) && |
2a27f13b | 544 | pim_addr_is_any(up->sg.src)) { |
28309df0 SP |
545 | struct prefix grp; |
546 | struct rp_info *trp_info; | |
547 | ||
5d99ebea | 548 | pim_addr_to_prefix(&grp, up->sg.grp); |
d0e418b4 | 549 | trp_info = pim_rp_find_match_group( |
550 | pim, &grp); | |
62596d9a | 551 | if (trp_info == rp_all) { |
28309df0 | 552 | pim_upstream_update(pim, up); |
62596d9a MR |
553 | upstream_updated = true; |
554 | } | |
28309df0 SP |
555 | } |
556 | } | |
62596d9a MR |
557 | if (upstream_updated) |
558 | pim_zebra_update_all_interfaces(pim); | |
28309df0 | 559 | |
5bd51314 DS |
560 | pim_rp_check_interfaces(pim, rp_all); |
561 | pim_rp_refresh_group_to_rp_mapping(pim); | |
e6e53006 | 562 | pim_find_or_track_nexthop(pim, nht_p, NULL, rp_all, |
4efdb9c6 | 563 | NULL); |
4533b847 | 564 | |
43763b11 DS |
565 | if (!pim_ecmp_nexthop_lookup(pim, |
566 | &rp_all->rp.source_nexthop, | |
e6e53006 | 567 | nht_p, &rp_all->group, 1)) |
43763b11 | 568 | return PIM_RP_NO_PATH; |
d62a17ae | 569 | return PIM_SUCCESS; |
570 | } | |
571 | ||
572 | /* | |
573 | * Return if the group is already configured for this RP | |
574 | */ | |
fd5540ea | 575 | tmp_rp_info = pim_rp_find_exact(pim, rp_addr, &rp_info->group); |
d0e418b4 | 576 | if (tmp_rp_info) { |
577 | if ((tmp_rp_info->rp_src != rp_src_flag) | |
578 | && (rp_src_flag == RP_SRC_STATIC)) | |
579 | tmp_rp_info->rp_src = rp_src_flag; | |
d62a17ae | 580 | XFREE(MTYPE_PIM_RP, rp_info); |
d0e418b4 | 581 | return result; |
d62a17ae | 582 | } |
583 | ||
584 | /* | |
585 | * Barf if this group is already covered by some other RP | |
586 | */ | |
d9c9a9ee | 587 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 588 | |
589 | if (tmp_rp_info) { | |
590 | if (tmp_rp_info->plist) { | |
591 | XFREE(MTYPE_PIM_RP, rp_info); | |
592 | return PIM_GROUP_PFXLIST_OVERLAP; | |
593 | } else { | |
594 | /* | |
595 | * If the only RP that covers this group is an | |
596 | * RP configured for | |
597 | * 224.0.0.0/4 that is fine, ignore that one. | |
598 | * For all others | |
599 | * though we must return PIM_GROUP_OVERLAP | |
600 | */ | |
89b68082 DS |
601 | if (prefix_same(&rp_info->group, |
602 | &tmp_rp_info->group)) { | |
d0e418b4 | 603 | if ((rp_src_flag == RP_SRC_STATIC) |
604 | && (tmp_rp_info->rp_src | |
605 | == RP_SRC_STATIC)) { | |
606 | XFREE(MTYPE_PIM_RP, rp_info); | |
607 | return PIM_GROUP_OVERLAP; | |
608 | } | |
609 | ||
610 | result = pim_rp_change( | |
49b7b2c4 | 611 | pim, rp_addr, |
d0e418b4 | 612 | tmp_rp_info->group, |
613 | rp_src_flag); | |
d62a17ae | 614 | XFREE(MTYPE_PIM_RP, rp_info); |
d0e418b4 | 615 | return result; |
d62a17ae | 616 | } |
617 | } | |
618 | } | |
619 | } | |
620 | ||
d9c9a9ee | 621 | listnode_add_sort(pim->rp_list, rp_info); |
94dc0c4e DS |
622 | |
623 | if (!rp_info->plist) { | |
624 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
625 | rn->info = rp_info; | |
626 | } | |
89b68082 | 627 | |
2dbe669b DA |
628 | if (PIM_DEBUG_PIM_TRACE) |
629 | zlog_debug("Allocated: %p for rp_info: %p(%pFX) Lock: %d", rn, | |
630 | rp_info, &rp_info->group, | |
94dc0c4e | 631 | rn ? route_node_get_lock_count(rn) : 0); |
d62a17ae | 632 | |
dd3364cb | 633 | frr_each (rb_pim_upstream, &pim->upstream_head, up) { |
2a27f13b | 634 | if (pim_addr_is_any(up->sg.src)) { |
28309df0 SP |
635 | struct prefix grp; |
636 | struct rp_info *trp_info; | |
637 | ||
5d99ebea | 638 | pim_addr_to_prefix(&grp, up->sg.grp); |
28309df0 SP |
639 | trp_info = pim_rp_find_match_group(pim, &grp); |
640 | ||
62596d9a | 641 | if (trp_info == rp_info) { |
28309df0 | 642 | pim_upstream_update(pim, up); |
62596d9a MR |
643 | upstream_updated = true; |
644 | } | |
28309df0 SP |
645 | } |
646 | } | |
647 | ||
62596d9a MR |
648 | if (upstream_updated) |
649 | pim_zebra_update_all_interfaces(pim); | |
650 | ||
5bd51314 DS |
651 | pim_rp_check_interfaces(pim, rp_info); |
652 | pim_rp_refresh_group_to_rp_mapping(pim); | |
653 | ||
d62a17ae | 654 | /* Register addr with Zebra NHT */ |
6ed1cea1 | 655 | nht_p = rp_info->rp.rpf_addr; |
2dbe669b | 656 | if (PIM_DEBUG_PIM_NHT_RP) |
b63192cf | 657 | zlog_debug("%s: NHT Register RP addr %pPA grp %pFX with Zebra ", |
2dbe669b | 658 | __func__, &nht_p, &rp_info->group); |
e6e53006 | 659 | pim_find_or_track_nexthop(pim, nht_p, NULL, rp_info, NULL); |
660 | if (!pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, nht_p, | |
43763b11 DS |
661 | &rp_info->group, 1)) |
662 | return PIM_RP_NO_PATH; | |
d62a17ae | 663 | |
d62a17ae | 664 | return PIM_SUCCESS; |
75a26779 DS |
665 | } |
666 | ||
99384c6e MR |
667 | void pim_rp_del_config(struct pim_instance *pim, pim_addr rp_addr, |
668 | const char *group_range, const char *plist) | |
75a26779 | 669 | { |
d62a17ae | 670 | struct prefix group; |
d62a17ae | 671 | int result; |
d62a17ae | 672 | |
673 | if (group_range == NULL) | |
c6ced474 | 674 | result = pim_get_all_mcast_group(&group); |
d62a17ae | 675 | else |
676 | result = str2prefix(group_range, &group); | |
677 | ||
99384c6e MR |
678 | if (!result) { |
679 | if (PIM_DEBUG_PIM_TRACE) | |
680 | zlog_debug( | |
681 | "%s: String to prefix failed for %pPAs group", | |
682 | __func__, &rp_addr); | |
683 | return; | |
684 | } | |
d62a17ae | 685 | |
99384c6e | 686 | pim_rp_del(pim, rp_addr, group, plist, RP_SRC_STATIC); |
d0e418b4 | 687 | } |
688 | ||
9dca52b9 MR |
689 | int pim_rp_del(struct pim_instance *pim, pim_addr rp_addr, struct prefix group, |
690 | const char *plist, enum rp_source rp_src_flag) | |
d0e418b4 | 691 | { |
692 | struct prefix g_all; | |
693 | struct rp_info *rp_info; | |
694 | struct rp_info *rp_all; | |
b63192cf | 695 | pim_addr nht_p; |
d0e418b4 | 696 | struct route_node *rn; |
697 | bool was_plist = false; | |
698 | struct rp_info *trp_info; | |
699 | struct pim_upstream *up; | |
d0e418b4 | 700 | struct bsgrp_node *bsgrp = NULL; |
701 | struct bsm_rpinfo *bsrp = NULL; | |
62596d9a | 702 | bool upstream_updated = false; |
d0e418b4 | 703 | |
d62a17ae | 704 | if (plist) |
d9c9a9ee | 705 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 706 | else |
d9c9a9ee | 707 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 708 | |
709 | if (!rp_info) | |
710 | return PIM_RP_NOT_FOUND; | |
711 | ||
712 | if (rp_info->plist) { | |
713 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
89b68082 | 714 | was_plist = true; |
d62a17ae | 715 | } |
716 | ||
23fc858a | 717 | if (PIM_DEBUG_PIM_TRACE) |
9dca52b9 MR |
718 | zlog_debug("%s: Delete RP %pPA for the group %pFX", __func__, |
719 | &rp_addr, &group); | |
d0e418b4 | 720 | |
721 | /* While static RP is getting deleted, we need to check if dynamic RP | |
722 | * present for the same group in BSM RP table, then install the dynamic | |
723 | * RP for the group node into the main rp table | |
724 | */ | |
725 | if (rp_src_flag == RP_SRC_STATIC) { | |
726 | bsgrp = pim_bsm_get_bsgrp_node(&pim->global_scope, &group); | |
727 | ||
728 | if (bsgrp) { | |
fdab2940 | 729 | bsrp = bsm_rpinfos_first(bsgrp->bsrp_list); |
d0e418b4 | 730 | if (bsrp) { |
9dca52b9 | 731 | if (PIM_DEBUG_PIM_TRACE) |
15569c58 | 732 | zlog_debug( |
9dca52b9 MR |
733 | "%s: BSM RP %pPA found for the group %pFX", |
734 | __func__, &bsrp->rp_address, | |
735 | &group); | |
d0e418b4 | 736 | return pim_rp_change(pim, bsrp->rp_address, |
737 | group, RP_SRC_BSR); | |
738 | } | |
739 | } else { | |
23fc858a | 740 | if (PIM_DEBUG_PIM_TRACE) |
d0e418b4 | 741 | zlog_debug( |
2dbe669b DA |
742 | "%s: BSM RP not found for the group %pFX", |
743 | __func__, &group); | |
d0e418b4 | 744 | } |
745 | } | |
746 | ||
d62a17ae | 747 | /* Deregister addr with Zebra NHT */ |
9dca52b9 | 748 | nht_p = rp_info->rp.rpf_addr; |
2dbe669b | 749 | if (PIM_DEBUG_PIM_NHT_RP) |
b63192cf | 750 | zlog_debug("%s: Deregister RP addr %pPA with Zebra ", __func__, |
2dbe669b | 751 | &nht_p); |
e6e53006 | 752 | pim_delete_tracked_nexthop(pim, nht_p, NULL, rp_info); |
d62a17ae | 753 | |
c6ced474 | 754 | if (!pim_get_all_mcast_group(&g_all)) |
e691f179 DS |
755 | return PIM_RP_BAD_ADDRESS; |
756 | ||
d9c9a9ee | 757 | rp_all = pim_rp_find_match_group(pim, &g_all); |
d62a17ae | 758 | |
759 | if (rp_all == rp_info) { | |
dd3364cb | 760 | frr_each (rb_pim_upstream, &pim->upstream_head, up) { |
8cfd7268 SP |
761 | /* Find the upstream (*, G) whose upstream address is |
762 | * same as the deleted RP | |
763 | */ | |
01adb431 DL |
764 | pim_addr rpf_addr; |
765 | ||
b63192cf | 766 | rpf_addr = rp_info->rp.rpf_addr; |
01adb431 | 767 | if (!pim_addr_cmp(up->upstream_addr, rpf_addr) && |
2a27f13b | 768 | pim_addr_is_any(up->sg.src)) { |
8cfd7268 | 769 | struct prefix grp; |
5d99ebea DL |
770 | |
771 | pim_addr_to_prefix(&grp, up->sg.grp); | |
8cfd7268 SP |
772 | trp_info = pim_rp_find_match_group(pim, &grp); |
773 | if (trp_info == rp_all) { | |
774 | pim_upstream_rpf_clear(pim, up); | |
01adb431 | 775 | up->upstream_addr = PIMADDR_ANY; |
8cfd7268 SP |
776 | } |
777 | } | |
778 | } | |
b63192cf | 779 | rp_all->rp.rpf_addr = PIMADDR_ANY; |
d62a17ae | 780 | rp_all->i_am_rp = 0; |
781 | return PIM_SUCCESS; | |
782 | } | |
783 | ||
d9c9a9ee | 784 | listnode_delete(pim->rp_list, rp_info); |
89b68082 DS |
785 | |
786 | if (!was_plist) { | |
787 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
788 | if (rn) { | |
789 | if (rn->info != rp_info) | |
af4c2728 | 790 | flog_err( |
450971aa | 791 | EC_LIB_DEVELOPMENT, |
3613d898 | 792 | "Expected rn->info to be equal to rp_info"); |
89b68082 | 793 | |
2dbe669b | 794 | if (PIM_DEBUG_PIM_TRACE) |
996c9314 | 795 | zlog_debug( |
2dbe669b DA |
796 | "%s:Found for Freeing: %p for rp_info: %p(%pFX) Lock: %d", |
797 | __func__, rn, rp_info, &rp_info->group, | |
c10e14e9 | 798 | route_node_get_lock_count(rn)); |
2dbe669b | 799 | |
89b68082 DS |
800 | rn->info = NULL; |
801 | route_unlock_node(rn); | |
802 | route_unlock_node(rn); | |
803 | } | |
804 | } | |
805 | ||
472ad383 | 806 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f | 807 | |
dd3364cb | 808 | frr_each (rb_pim_upstream, &pim->upstream_head, up) { |
8cfd7268 SP |
809 | /* Find the upstream (*, G) whose upstream address is same as |
810 | * the deleted RP | |
811 | */ | |
01adb431 DL |
812 | pim_addr rpf_addr; |
813 | ||
b63192cf | 814 | rpf_addr = rp_info->rp.rpf_addr; |
01adb431 | 815 | if (!pim_addr_cmp(up->upstream_addr, rpf_addr) && |
2a27f13b | 816 | pim_addr_is_any(up->sg.src)) { |
8cfd7268 SP |
817 | struct prefix grp; |
818 | ||
5d99ebea | 819 | pim_addr_to_prefix(&grp, up->sg.grp); |
8cfd7268 SP |
820 | trp_info = pim_rp_find_match_group(pim, &grp); |
821 | ||
822 | /* RP not found for the group grp */ | |
cc144e8b | 823 | if (pim_rpf_addr_is_inaddr_any(&trp_info->rp)) { |
8cfd7268 | 824 | pim_upstream_rpf_clear(pim, up); |
d0e418b4 | 825 | pim_rp_set_upstream_addr( |
826 | pim, &up->upstream_addr, up->sg.src, | |
827 | up->sg.grp); | |
8cfd7268 SP |
828 | } |
829 | ||
830 | /* RP found for the group grp */ | |
62596d9a | 831 | else { |
8cfd7268 | 832 | pim_upstream_update(pim, up); |
62596d9a MR |
833 | upstream_updated = true; |
834 | } | |
8cfd7268 SP |
835 | } |
836 | } | |
837 | ||
62596d9a MR |
838 | if (upstream_updated) |
839 | pim_zebra_update_all_interfaces(pim); | |
840 | ||
093c928f | 841 | XFREE(MTYPE_PIM_RP, rp_info); |
d62a17ae | 842 | return PIM_SUCCESS; |
75a26779 | 843 | } |
13afbd05 | 844 | |
49b7b2c4 | 845 | int pim_rp_change(struct pim_instance *pim, pim_addr new_rp_addr, |
d0e418b4 | 846 | struct prefix group, enum rp_source rp_src_flag) |
847 | { | |
b63192cf | 848 | pim_addr nht_p; |
d0e418b4 | 849 | struct route_node *rn; |
850 | int result = 0; | |
851 | struct rp_info *rp_info = NULL; | |
852 | struct pim_upstream *up; | |
62596d9a | 853 | bool upstream_updated = false; |
49b7b2c4 | 854 | pim_addr old_rp_addr; |
d0e418b4 | 855 | |
856 | rn = route_node_lookup(pim->rp_table, &group); | |
857 | if (!rn) { | |
858 | result = pim_rp_new(pim, new_rp_addr, group, NULL, rp_src_flag); | |
859 | return result; | |
860 | } | |
861 | ||
862 | rp_info = rn->info; | |
863 | ||
864 | if (!rp_info) { | |
865 | route_unlock_node(rn); | |
866 | result = pim_rp_new(pim, new_rp_addr, group, NULL, rp_src_flag); | |
867 | return result; | |
868 | } | |
869 | ||
b63192cf | 870 | old_rp_addr = rp_info->rp.rpf_addr; |
49b7b2c4 | 871 | if (!pim_addr_cmp(new_rp_addr, old_rp_addr)) { |
d0e418b4 | 872 | if (rp_info->rp_src != rp_src_flag) { |
873 | rp_info->rp_src = rp_src_flag; | |
874 | route_unlock_node(rn); | |
875 | return PIM_SUCCESS; | |
876 | } | |
877 | } | |
878 | ||
879 | /* Deregister old RP addr with Zebra NHT */ | |
49b7b2c4 MR |
880 | |
881 | if (!pim_addr_is_any(old_rp_addr)) { | |
882 | nht_p = rp_info->rp.rpf_addr; | |
2dbe669b | 883 | if (PIM_DEBUG_PIM_NHT_RP) |
b63192cf | 884 | zlog_debug("%s: Deregister RP addr %pPA with Zebra ", |
2dbe669b | 885 | __func__, &nht_p); |
e6e53006 | 886 | pim_delete_tracked_nexthop(pim, nht_p, NULL, rp_info); |
d0e418b4 | 887 | } |
888 | ||
889 | pim_rp_nexthop_del(rp_info); | |
890 | listnode_delete(pim->rp_list, rp_info); | |
891 | /* Update the new RP address*/ | |
49b7b2c4 | 892 | |
b63192cf | 893 | rp_info->rp.rpf_addr = new_rp_addr; |
d0e418b4 | 894 | rp_info->rp_src = rp_src_flag; |
895 | rp_info->i_am_rp = 0; | |
896 | ||
897 | listnode_add_sort(pim->rp_list, rp_info); | |
898 | ||
dd3364cb | 899 | frr_each (rb_pim_upstream, &pim->upstream_head, up) { |
2a27f13b | 900 | if (pim_addr_is_any(up->sg.src)) { |
d0e418b4 | 901 | struct prefix grp; |
902 | struct rp_info *trp_info; | |
903 | ||
5d99ebea | 904 | pim_addr_to_prefix(&grp, up->sg.grp); |
d0e418b4 | 905 | trp_info = pim_rp_find_match_group(pim, &grp); |
906 | ||
62596d9a | 907 | if (trp_info == rp_info) { |
d0e418b4 | 908 | pim_upstream_update(pim, up); |
62596d9a MR |
909 | upstream_updated = true; |
910 | } | |
d0e418b4 | 911 | } |
912 | } | |
913 | ||
62596d9a MR |
914 | if (upstream_updated) |
915 | pim_zebra_update_all_interfaces(pim); | |
916 | ||
d0e418b4 | 917 | /* Register new RP addr with Zebra NHT */ |
49b7b2c4 | 918 | nht_p = rp_info->rp.rpf_addr; |
2dbe669b | 919 | if (PIM_DEBUG_PIM_NHT_RP) |
b63192cf | 920 | zlog_debug("%s: NHT Register RP addr %pPA grp %pFX with Zebra ", |
2dbe669b | 921 | __func__, &nht_p, &rp_info->group); |
d0e418b4 | 922 | |
e6e53006 | 923 | pim_find_or_track_nexthop(pim, nht_p, NULL, rp_info, NULL); |
924 | if (!pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, nht_p, | |
d0e418b4 | 925 | &rp_info->group, 1)) { |
926 | route_unlock_node(rn); | |
927 | return PIM_RP_NO_PATH; | |
928 | } | |
929 | ||
930 | pim_rp_check_interfaces(pim, rp_info); | |
931 | ||
932 | route_unlock_node(rn); | |
933 | ||
934 | pim_rp_refresh_group_to_rp_mapping(pim); | |
935 | ||
936 | return result; | |
937 | } | |
938 | ||
fec883d9 | 939 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 940 | { |
d62a17ae | 941 | struct listnode *node; |
942 | struct rp_info *rp_info; | |
b63192cf | 943 | pim_addr nht_p; |
d62a17ae | 944 | |
d9c9a9ee | 945 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
cc144e8b | 946 | if (pim_rpf_addr_is_inaddr_any(&rp_info->rp)) |
d62a17ae | 947 | continue; |
948 | ||
5d1d18a1 | 949 | nht_p = rp_info->rp.rpf_addr; |
8cfd7268 | 950 | |
e6e53006 | 951 | pim_find_or_track_nexthop(pim, nht_p, NULL, rp_info, NULL); |
43763b11 | 952 | if (!pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
43a18948 | 953 | nht_p, &rp_info->group, 1)) { |
43763b11 | 954 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 955 | zlog_debug( |
43763b11 | 956 | "Unable to lookup nexthop for rp specified"); |
43a18948 SP |
957 | pim_rp_nexthop_del(rp_info); |
958 | } | |
d62a17ae | 959 | } |
13afbd05 DS |
960 | } |
961 | ||
54b97c74 | 962 | /* |
7176984f | 963 | * Checks to see if we should elect ourself the actual RP when new if |
964 | * addresses are added against an interface. | |
54b97c74 | 965 | */ |
d62a17ae | 966 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 967 | { |
d62a17ae | 968 | struct listnode *node; |
969 | struct rp_info *rp_info; | |
970 | bool i_am_rp_changed = false; | |
d9c9a9ee | 971 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 972 | |
d9c9a9ee | 973 | if (pim->rp_list == NULL) |
d62a17ae | 974 | return; |
975 | ||
d9c9a9ee | 976 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
cc144e8b | 977 | if (pim_rpf_addr_is_inaddr_any(&rp_info->rp)) |
d62a17ae | 978 | continue; |
979 | ||
980 | /* if i_am_rp is already set nothing to be done (adding new | |
981 | * addresses | |
982 | * is not going to make a difference). */ | |
983 | if (rp_info->i_am_rp) { | |
984 | continue; | |
985 | } | |
986 | ||
987 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
988 | i_am_rp_changed = true; | |
989 | rp_info->i_am_rp = 1; | |
b63192cf | 990 | if (PIM_DEBUG_PIM_NHT_RP) |
991 | zlog_debug("%s: %pPA: i am rp", __func__, | |
992 | &rp_info->rp.rpf_addr); | |
d62a17ae | 993 | } |
994 | } | |
995 | ||
996 | if (i_am_rp_changed) { | |
472ad383 | 997 | pim_msdp_i_am_rp_changed(pim); |
a749b900 | 998 | pim_upstream_reeval_use_rpt(pim); |
d62a17ae | 999 | } |
7176984f | 1000 | } |
36d6bd7d | 1001 | |
7176984f | 1002 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
1003 | * are removed. Removing numbers is an uncommon event in an active network | |
1004 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 1005 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 1006 | { |
d62a17ae | 1007 | struct listnode *node; |
1008 | struct rp_info *rp_info; | |
1009 | bool i_am_rp_changed = false; | |
1010 | int old_i_am_rp; | |
1011 | ||
d9c9a9ee | 1012 | if (pim->rp_list == NULL) |
d62a17ae | 1013 | return; |
1014 | ||
d9c9a9ee | 1015 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
cc144e8b | 1016 | if (pim_rpf_addr_is_inaddr_any(&rp_info->rp)) |
d62a17ae | 1017 | continue; |
1018 | ||
1019 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 1020 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 1021 | |
1022 | if (old_i_am_rp != rp_info->i_am_rp) { | |
1023 | i_am_rp_changed = true; | |
3d225d48 | 1024 | if (PIM_DEBUG_PIM_NHT_RP) { |
b63192cf | 1025 | if (rp_info->i_am_rp) |
1026 | zlog_debug("%s: %pPA: i am rp", | |
1027 | __func__, | |
1028 | &rp_info->rp.rpf_addr); | |
1029 | else | |
e6e53006 | 1030 | zlog_debug( |
1031 | "%s: %pPA: i am no longer rp", | |
1032 | __func__, | |
1033 | &rp_info->rp.rpf_addr); | |
d62a17ae | 1034 | } |
1035 | } | |
1036 | } | |
1037 | ||
1038 | if (i_am_rp_changed) { | |
472ad383 | 1039 | pim_msdp_i_am_rp_changed(pim); |
a749b900 | 1040 | pim_upstream_reeval_use_rpt(pim); |
d62a17ae | 1041 | } |
54b97c74 DS |
1042 | } |
1043 | ||
1044 | /* | |
1045 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
1046 | * this router is the RP for the group. | |
1047 | * | |
1048 | * Since we only have static RP, all groups are part of this RP | |
1049 | */ | |
5d99ebea | 1050 | int pim_rp_i_am_rp(struct pim_instance *pim, pim_addr group) |
54b97c74 | 1051 | { |
d62a17ae | 1052 | struct prefix g; |
1053 | struct rp_info *rp_info; | |
36d6bd7d | 1054 | |
d62a17ae | 1055 | memset(&g, 0, sizeof(g)); |
131ded08 | 1056 | pim_addr_to_prefix(&g, group); |
d9c9a9ee | 1057 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 1058 | |
d62a17ae | 1059 | if (rp_info) |
1060 | return rp_info->i_am_rp; | |
d62a17ae | 1061 | return 0; |
54b97c74 DS |
1062 | } |
1063 | ||
71694057 DS |
1064 | /* |
1065 | * RP(G) | |
1066 | * | |
1067 | * Return the RP that the Group belongs too. | |
1068 | */ | |
5d99ebea | 1069 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, pim_addr group) |
71694057 | 1070 | { |
d62a17ae | 1071 | struct prefix g; |
1072 | struct rp_info *rp_info; | |
1073 | ||
1074 | memset(&g, 0, sizeof(g)); | |
8eb5ad6c | 1075 | pim_addr_to_prefix(&g, group); |
d62a17ae | 1076 | |
d9c9a9ee | 1077 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 1078 | |
1079 | if (rp_info) { | |
b63192cf | 1080 | pim_addr nht_p; |
43763b11 | 1081 | |
d62a17ae | 1082 | /* Register addr with Zebra NHT */ |
8eb5ad6c | 1083 | nht_p = rp_info->rp.rpf_addr; |
2dbe669b | 1084 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 1085 | zlog_debug( |
b63192cf | 1086 | "%s: NHT Register RP addr %pPA grp %pFX with Zebra", |
2dbe669b | 1087 | __func__, &nht_p, &rp_info->group); |
e6e53006 | 1088 | pim_find_or_track_nexthop(pim, nht_p, NULL, rp_info, NULL); |
43763b11 DS |
1089 | pim_rpf_set_refresh_time(pim); |
1090 | (void)pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, | |
e6e53006 | 1091 | nht_p, &rp_info->group, 1); |
d62a17ae | 1092 | return (&rp_info->rp); |
1093 | } | |
1094 | ||
1095 | // About to Go Down | |
1096 | return NULL; | |
71694057 DS |
1097 | } |
1098 | ||
8f5f5e91 DS |
1099 | /* |
1100 | * Set the upstream IP address we want to talk to based upon | |
1101 | * the rp configured and the source address | |
1102 | * | |
1103 | * If we have don't have a RP configured and the source address is * | |
732c209c | 1104 | * then set the upstream addr as INADDR_ANY and return failure. |
8f5f5e91 DS |
1105 | * |
1106 | */ | |
5d99ebea DL |
1107 | int pim_rp_set_upstream_addr(struct pim_instance *pim, pim_addr *up, |
1108 | pim_addr source, pim_addr group) | |
8f5f5e91 | 1109 | { |
d62a17ae | 1110 | struct rp_info *rp_info; |
1111 | struct prefix g; | |
36d6bd7d | 1112 | |
d62a17ae | 1113 | memset(&g, 0, sizeof(g)); |
b1e132ac MR |
1114 | |
1115 | pim_addr_to_prefix(&g, group); | |
36d6bd7d | 1116 | |
d9c9a9ee | 1117 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 1118 | |
cc144e8b | 1119 | if (!rp_info || ((pim_rpf_addr_is_inaddr_any(&rp_info->rp)) && |
b1e132ac | 1120 | (pim_addr_is_any(source)))) { |
3d225d48 | 1121 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 1122 | zlog_debug("%s: Received a (*,G) with no RP configured", |
15569c58 | 1123 | __func__); |
b1e132ac | 1124 | *up = PIMADDR_ANY; |
d62a17ae | 1125 | return 0; |
1126 | } | |
8f5f5e91 | 1127 | |
b1e132ac | 1128 | if (pim_addr_is_any(source)) |
b63192cf | 1129 | *up = rp_info->rp.rpf_addr; |
b1e132ac MR |
1130 | else |
1131 | *up = source; | |
8f5f5e91 | 1132 | |
d62a17ae | 1133 | return 1; |
8f5f5e91 | 1134 | } |
75a26779 | 1135 | |
0c8b717e DS |
1136 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
1137 | const char *spaces) | |
75a26779 | 1138 | { |
d62a17ae | 1139 | struct listnode *node; |
1140 | struct rp_info *rp_info; | |
d62a17ae | 1141 | int count = 0; |
0c3182a0 | 1142 | pim_addr rp_addr; |
d62a17ae | 1143 | |
d9c9a9ee | 1144 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
cc144e8b | 1145 | if (pim_rpf_addr_is_inaddr_any(&rp_info->rp)) |
d62a17ae | 1146 | continue; |
1147 | ||
d0e418b4 | 1148 | if (rp_info->rp_src == RP_SRC_BSR) |
1149 | continue; | |
1150 | ||
b63192cf | 1151 | rp_addr = rp_info->rp.rpf_addr; |
d62a17ae | 1152 | if (rp_info->plist) |
0c3182a0 MR |
1153 | vty_out(vty, |
1154 | "%s" PIM_AF_NAME | |
1155 | " pim rp %pPA prefix-list %s\n", | |
1156 | spaces, &rp_addr, rp_info->plist); | |
d62a17ae | 1157 | else |
0c3182a0 MR |
1158 | vty_out(vty, "%s" PIM_AF_NAME " pim rp %pPA %pFX\n", |
1159 | spaces, &rp_addr, &rp_info->group); | |
d62a17ae | 1160 | count++; |
1161 | } | |
1162 | ||
1163 | return count; | |
75a26779 DS |
1164 | } |
1165 | ||
8c0a7680 | 1166 | void pim_rp_show_information(struct pim_instance *pim, struct prefix *range, |
0095f482 | 1167 | struct vty *vty, json_object *json) |
00d07c6f | 1168 | { |
d62a17ae | 1169 | struct rp_info *rp_info; |
1170 | struct rp_info *prev_rp_info = NULL; | |
1171 | struct listnode *node; | |
f1ebd3db A |
1172 | struct ttable *tt = NULL; |
1173 | char *table = NULL; | |
025725f7 | 1174 | char source[7]; |
f1ebd3db | 1175 | char grp[INET6_ADDRSTRLEN]; |
d62a17ae | 1176 | |
d62a17ae | 1177 | json_object *json_rp_rows = NULL; |
1178 | json_object *json_row = NULL; | |
1179 | ||
f1ebd3db A |
1180 | if (!json) { |
1181 | /* Prepare table. */ | |
1182 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
1183 | ttable_add_row( | |
1184 | tt, | |
1185 | "RP address|group/prefix-list|OIF|I am RP|Source|Group-Type"); | |
1186 | tt->style.cell.rpad = 2; | |
1187 | tt->style.corner = '+'; | |
1188 | ttable_restyle(tt); | |
1189 | } | |
1190 | ||
d9c9a9ee | 1191 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
243e02ab DL |
1192 | if (pim_rpf_addr_is_inaddr_any(&rp_info->rp)) |
1193 | continue; | |
d62a17ae | 1194 | |
8c0a7680 DA |
1195 | #if PIM_IPV == 4 |
1196 | pim_addr group = rp_info->group.u.prefix4; | |
1197 | #else | |
1198 | pim_addr group = rp_info->group.u.prefix6; | |
1199 | #endif | |
1200 | const char *group_type = | |
1201 | pim_is_grp_ssm(pim, group) ? "SSM" : "ASM"; | |
1202 | ||
c07ddc36 | 1203 | if (range && !prefix_match(&rp_info->group, range)) |
8c0a7680 DA |
1204 | continue; |
1205 | ||
243e02ab DL |
1206 | if (rp_info->rp_src == RP_SRC_STATIC) |
1207 | strlcpy(source, "Static", sizeof(source)); | |
1208 | else if (rp_info->rp_src == RP_SRC_BSR) | |
1209 | strlcpy(source, "BSR", sizeof(source)); | |
1210 | else | |
1211 | strlcpy(source, "None", sizeof(source)); | |
0095f482 | 1212 | if (json) { |
243e02ab DL |
1213 | /* |
1214 | * If we have moved on to a new RP then add the | |
1215 | * entry for the previous RP | |
1216 | */ | |
1217 | if (prev_rp_info && | |
b63192cf | 1218 | (pim_addr_cmp(prev_rp_info->rp.rpf_addr, |
1219 | rp_info->rp.rpf_addr))) { | |
5d1d18a1 | 1220 | json_object_object_addf( |
b63192cf | 1221 | json, json_rp_rows, "%pPA", |
5d1d18a1 | 1222 | &prev_rp_info->rp.rpf_addr); |
243e02ab DL |
1223 | json_rp_rows = NULL; |
1224 | } | |
d62a17ae | 1225 | |
243e02ab DL |
1226 | if (!json_rp_rows) |
1227 | json_rp_rows = json_object_new_array(); | |
1228 | ||
1229 | json_row = json_object_new_object(); | |
b63192cf | 1230 | json_object_string_addf(json_row, "rpAddress", "%pPA", |
5d1d18a1 | 1231 | &rp_info->rp.rpf_addr); |
243e02ab DL |
1232 | if (rp_info->rp.source_nexthop.interface) |
1233 | json_object_string_add( | |
1234 | json_row, "outboundInterface", | |
1235 | rp_info->rp.source_nexthop | |
1236 | .interface->name); | |
1237 | else | |
1238 | json_object_string_add(json_row, | |
1239 | "outboundInterface", | |
1240 | "Unknown"); | |
1241 | if (rp_info->i_am_rp) | |
1242 | json_object_boolean_true_add(json_row, "iAmRP"); | |
1243 | else | |
1244 | json_object_boolean_false_add(json_row, | |
1245 | "iAmRP"); | |
d62a17ae | 1246 | |
243e02ab DL |
1247 | if (rp_info->plist) |
1248 | json_object_string_add(json_row, "prefixList", | |
1249 | rp_info->plist); | |
1250 | else | |
1251 | json_object_string_addf(json_row, "group", | |
1252 | "%pFX", | |
1253 | &rp_info->group); | |
1254 | json_object_string_add(json_row, "source", source); | |
8c0a7680 DA |
1255 | json_object_string_add(json_row, "groupType", |
1256 | group_type); | |
d62a17ae | 1257 | |
243e02ab DL |
1258 | json_object_array_add(json_rp_rows, json_row); |
1259 | } else { | |
f1ebd3db A |
1260 | prefix2str(&rp_info->group, grp, sizeof(grp)); |
1261 | ttable_add_row(tt, "%pPA|%s|%s|%s|%s|%s", | |
1262 | &rp_info->rp.rpf_addr, | |
1263 | rp_info->plist | |
1264 | ? rp_info->plist | |
1265 | : grp, | |
1266 | rp_info->rp.source_nexthop.interface | |
1267 | ? rp_info->rp.source_nexthop | |
1268 | .interface->name | |
1269 | : "Unknown", | |
1270 | rp_info->i_am_rp | |
1271 | ? "yes" | |
1272 | : "no", | |
1273 | source, group_type); | |
d62a17ae | 1274 | } |
243e02ab | 1275 | prev_rp_info = rp_info; |
d62a17ae | 1276 | } |
1277 | ||
f1ebd3db A |
1278 | /* Dump the generated table. */ |
1279 | if (!json) { | |
1280 | table = ttable_dump(tt, "\n"); | |
1281 | vty_out(vty, "%s\n", table); | |
1282 | XFREE(MTYPE_TMP, table); | |
1283 | ttable_del(tt); | |
1284 | } else { | |
d62a17ae | 1285 | if (prev_rp_info && json_rp_rows) |
b63192cf | 1286 | json_object_object_addf(json, json_rp_rows, "%pPA", |
5d1d18a1 | 1287 | &prev_rp_info->rp.rpf_addr); |
d62a17ae | 1288 | } |
00d07c6f | 1289 | } |
cba44481 | 1290 | |
c9cd7fbc | 1291 | void pim_resolve_rp_nh(struct pim_instance *pim, struct pim_neighbor *nbr) |
cba44481 | 1292 | { |
d62a17ae | 1293 | struct listnode *node = NULL; |
1294 | struct rp_info *rp_info = NULL; | |
1295 | struct nexthop *nh_node = NULL; | |
b63192cf | 1296 | pim_addr nht_p; |
d62a17ae | 1297 | struct pim_nexthop_cache pnc; |
d62a17ae | 1298 | |
d9c9a9ee | 1299 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
cc144e8b | 1300 | if (pim_rpf_addr_is_inaddr_any(&rp_info->rp)) |
d62a17ae | 1301 | continue; |
1302 | ||
5d1d18a1 | 1303 | nht_p = rp_info->rp.rpf_addr; |
d62a17ae | 1304 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); |
e6e53006 | 1305 | if (!pim_find_or_track_nexthop(pim, nht_p, NULL, rp_info, &pnc)) |
cb9c7c50 DS |
1306 | continue; |
1307 | ||
1308 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
5d1d18a1 DL |
1309 | #if PIM_IPV == 4 |
1310 | if (!pim_addr_is_any(nh_node->gate.ipv4)) | |
1311 | continue; | |
1312 | #else | |
1313 | if (!pim_addr_is_any(nh_node->gate.ipv6)) | |
cb9c7c50 | 1314 | continue; |
5d1d18a1 | 1315 | #endif |
cb9c7c50 DS |
1316 | |
1317 | struct interface *ifp1 = if_lookup_by_index( | |
d3cc1e45 | 1318 | nh_node->ifindex, pim->vrf->vrf_id); |
c9cd7fbc DS |
1319 | |
1320 | if (nbr->interface != ifp1) | |
cb9c7c50 DS |
1321 | continue; |
1322 | ||
ae449dc5 | 1323 | #if PIM_IPV == 4 |
cb9c7c50 | 1324 | nh_node->gate.ipv4 = nbr->source_addr; |
9bb93fa0 DL |
1325 | #else |
1326 | nh_node->gate.ipv6 = nbr->source_addr; | |
1327 | #endif | |
5d1d18a1 | 1328 | if (PIM_DEBUG_PIM_NHT_RP) |
cb9c7c50 | 1329 | zlog_debug( |
b63192cf | 1330 | "%s: addr %pPA new nexthop addr %pPAs interface %s", |
5d1d18a1 | 1331 | __func__, &nht_p, &nbr->source_addr, |
9bb93fa0 | 1332 | ifp1->name); |
d62a17ae | 1333 | } |
1334 | } | |
cba44481 | 1335 | } |