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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" |
8f5f5e91 DS |
34 | |
35 | #include "pimd.h" | |
75a26779 | 36 | #include "pim_vty.h" |
54b97c74 | 37 | #include "pim_str.h" |
7176984f | 38 | #include "pim_iface.h" |
8f5f5e91 | 39 | #include "pim_rp.h" |
ed66602c DS |
40 | #include "pim_str.h" |
41 | #include "pim_rpf.h" | |
13afbd05 | 42 | #include "pim_sock.h" |
36d6bd7d | 43 | #include "pim_memory.h" |
00d07c6f | 44 | #include "pim_iface.h" |
7667c556 | 45 | #include "pim_msdp.h" |
1bc98276 | 46 | #include "pim_nht.h" |
8f5f5e91 | 47 | |
36d6bd7d | 48 | |
c2cf4b02 DS |
49 | /* Cleanup pim->rpf_hash each node data */ |
50 | void pim_rp_list_hash_clean(void *data) | |
51 | { | |
7c591950 | 52 | struct pim_nexthop_cache *pnc = (struct pim_nexthop_cache *)data; |
c2cf4b02 | 53 | |
affe9e99 | 54 | list_delete_and_null(&pnc->rp_list); |
6e1ef388 | 55 | |
7c591950 DS |
56 | hash_clean(pnc->upstream_hash, NULL); |
57 | hash_free(pnc->upstream_hash); | |
58 | pnc->upstream_hash = NULL; | |
6e1ef388 DS |
59 | |
60 | XFREE(MTYPE_PIM_NEXTHOP_CACHE, pnc); | |
c2cf4b02 DS |
61 | } |
62 | ||
d62a17ae | 63 | static void pim_rp_info_free(struct rp_info *rp_info) |
36d6bd7d | 64 | { |
d62a17ae | 65 | XFREE(MTYPE_PIM_RP, rp_info); |
36d6bd7d DS |
66 | } |
67 | ||
d62a17ae | 68 | int pim_rp_list_cmp(void *v1, void *v2) |
36d6bd7d | 69 | { |
d62a17ae | 70 | struct rp_info *rp1 = (struct rp_info *)v1; |
71 | struct rp_info *rp2 = (struct rp_info *)v2; | |
72 | ||
73 | /* | |
74 | * Sort by RP IP address | |
75 | */ | |
76 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
77 | < rp2->rp.rpf_addr.u.prefix4.s_addr) | |
78 | return -1; | |
79 | ||
80 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
81 | > rp2->rp.rpf_addr.u.prefix4.s_addr) | |
82 | return 1; | |
83 | ||
84 | /* | |
85 | * Sort by group IP address | |
86 | */ | |
87 | if (rp1->group.u.prefix4.s_addr < rp2->group.u.prefix4.s_addr) | |
88 | return -1; | |
89 | ||
90 | if (rp1->group.u.prefix4.s_addr > rp2->group.u.prefix4.s_addr) | |
91 | return 1; | |
92 | ||
93 | return 0; | |
36d6bd7d DS |
94 | } |
95 | ||
d9c9a9ee | 96 | void pim_rp_init(struct pim_instance *pim) |
36d6bd7d | 97 | { |
d62a17ae | 98 | struct rp_info *rp_info; |
89b68082 | 99 | struct route_node *rn; |
36d6bd7d | 100 | |
d9c9a9ee | 101 | pim->rp_list = list_new(); |
093c928f DS |
102 | if (!pim->rp_list) { |
103 | zlog_err("Unable to alloc rp_list"); | |
104 | return; | |
105 | } | |
d9c9a9ee DS |
106 | pim->rp_list->del = (void (*)(void *))pim_rp_info_free; |
107 | pim->rp_list->cmp = pim_rp_list_cmp; | |
36d6bd7d | 108 | |
89b68082 DS |
109 | pim->rp_table = route_table_init(); |
110 | if (!pim->rp_table) { | |
111 | zlog_err("Unable to alloc rp_table"); | |
affe9e99 | 112 | list_delete_and_null(&pim->rp_list); |
89b68082 DS |
113 | return; |
114 | } | |
115 | ||
d62a17ae | 116 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); |
36d6bd7d | 117 | |
2e8345c1 | 118 | if (!str2prefix("224.0.0.0/4", &rp_info->group)) { |
093c928f | 119 | zlog_err("Unable to convert 224.0.0.0/4 to prefix"); |
affe9e99 | 120 | list_delete_and_null(&pim->rp_list); |
89b68082 | 121 | route_table_finish(pim->rp_table); |
2e8345c1 DS |
122 | XFREE(MTYPE_PIM_RP, rp_info); |
123 | return; | |
124 | } | |
d62a17ae | 125 | rp_info->group.family = AF_INET; |
126 | rp_info->rp.rpf_addr.family = AF_INET; | |
127 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
128 | rp_info->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
36d6bd7d | 129 | |
d9c9a9ee | 130 | listnode_add(pim->rp_list, rp_info); |
89b68082 DS |
131 | |
132 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
133 | if (!rn) { | |
134 | zlog_err("Failure to get route node for pim->rp_table"); | |
affe9e99 | 135 | list_delete_and_null(&pim->rp_list); |
89b68082 DS |
136 | route_table_finish(pim->rp_table); |
137 | XFREE(MTYPE_PIM_RP, rp_info); | |
138 | return; | |
139 | } | |
140 | ||
141 | rn->info = rp_info; | |
142 | if (PIM_DEBUG_TRACE) | |
996c9314 LB |
143 | zlog_debug( |
144 | "Allocated: %p for rp_info: %p(224.0.0.0/4) Lock: %d", | |
145 | rn, rp_info, rn->lock); | |
36d6bd7d DS |
146 | } |
147 | ||
d9c9a9ee | 148 | void pim_rp_free(struct pim_instance *pim) |
36d6bd7d | 149 | { |
d9c9a9ee | 150 | if (pim->rp_list) |
affe9e99 | 151 | list_delete_and_null(&pim->rp_list); |
36d6bd7d DS |
152 | } |
153 | ||
dfe43e25 DW |
154 | /* |
155 | * Given an RP's prefix-list, return the RP's rp_info for that prefix-list | |
156 | */ | |
d9c9a9ee DS |
157 | static struct rp_info *pim_rp_find_prefix_list(struct pim_instance *pim, |
158 | struct in_addr rp, | |
d62a17ae | 159 | const char *plist) |
36d6bd7d | 160 | { |
d62a17ae | 161 | struct listnode *node; |
162 | struct rp_info *rp_info; | |
163 | ||
d9c9a9ee | 164 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 165 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
166 | && rp_info->plist && strcmp(rp_info->plist, plist) == 0) { | |
167 | return rp_info; | |
168 | } | |
169 | } | |
170 | ||
171 | return NULL; | |
36d6bd7d DS |
172 | } |
173 | ||
dfe43e25 DW |
174 | /* |
175 | * Return true if plist is used by any rp_info | |
176 | */ | |
d9c9a9ee | 177 | static int pim_rp_prefix_list_used(struct pim_instance *pim, const char *plist) |
dfe43e25 | 178 | { |
d62a17ae | 179 | struct listnode *node; |
180 | struct rp_info *rp_info; | |
181 | ||
d9c9a9ee | 182 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 183 | if (rp_info->plist && strcmp(rp_info->plist, plist) == 0) { |
184 | return 1; | |
185 | } | |
186 | } | |
187 | ||
188 | return 0; | |
dfe43e25 DW |
189 | } |
190 | ||
191 | /* | |
d62a17ae | 192 | * Given an RP's address, return the RP's rp_info that is an exact match for |
193 | * 'group' | |
dfe43e25 | 194 | */ |
d9c9a9ee DS |
195 | static struct rp_info *pim_rp_find_exact(struct pim_instance *pim, |
196 | struct in_addr rp, | |
123214ef | 197 | const struct prefix *group) |
36d6bd7d | 198 | { |
d62a17ae | 199 | struct listnode *node; |
200 | struct rp_info *rp_info; | |
36d6bd7d | 201 | |
d9c9a9ee | 202 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 203 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
204 | && prefix_same(&rp_info->group, group)) | |
205 | return rp_info; | |
206 | } | |
54b97c74 | 207 | |
d62a17ae | 208 | return NULL; |
36d6bd7d DS |
209 | } |
210 | ||
dfe43e25 DW |
211 | /* |
212 | * Given a group, return the rp_info for that group | |
213 | */ | |
d9c9a9ee | 214 | static struct rp_info *pim_rp_find_match_group(struct pim_instance *pim, |
123214ef | 215 | const struct prefix *group) |
36d6bd7d | 216 | { |
d62a17ae | 217 | struct listnode *node; |
b77b1550 | 218 | struct rp_info *best = NULL; |
d62a17ae | 219 | struct rp_info *rp_info; |
220 | struct prefix_list *plist; | |
123214ef | 221 | const struct prefix *p, *bp; |
89b68082 | 222 | struct route_node *rn; |
d62a17ae | 223 | |
4646b86a | 224 | bp = NULL; |
d9c9a9ee | 225 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 226 | if (rp_info->plist) { |
227 | plist = prefix_list_lookup(AFI_IP, rp_info->plist); | |
228 | ||
996c9314 LB |
229 | if (prefix_list_apply_which_prefix(plist, &p, group) |
230 | == PREFIX_DENY) | |
b77b1550 DS |
231 | continue; |
232 | ||
233 | if (!best) { | |
234 | best = rp_info; | |
235 | bp = p; | |
236 | continue; | |
237 | } | |
238 | ||
4646b86a | 239 | if (bp && bp->prefixlen < p->prefixlen) { |
b77b1550 DS |
240 | best = rp_info; |
241 | bp = p; | |
242 | } | |
d62a17ae | 243 | } |
244 | } | |
245 | ||
89b68082 DS |
246 | rn = route_node_match(pim->rp_table, group); |
247 | if (!rn) { | |
996c9314 LB |
248 | zlog_err( |
249 | "%s: BUG We should have found default group information\n", | |
250 | __PRETTY_FUNCTION__); | |
89b68082 DS |
251 | return best; |
252 | } | |
253 | ||
254 | rp_info = rn->info; | |
255 | if (PIM_DEBUG_TRACE) { | |
256 | char buf[PREFIX_STRLEN]; | |
257 | ||
258 | route_unlock_node(rn); | |
996c9314 LB |
259 | zlog_debug("Lookedup: %p for rp_info: %p(%s) Lock: %d", rn, |
260 | rp_info, | |
89b68082 DS |
261 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
262 | rn->lock); | |
263 | } | |
264 | ||
265 | if (!best) | |
266 | return rp_info; | |
267 | ||
268 | if (rp_info->group.prefixlen < best->group.prefixlen) | |
269 | best = rp_info; | |
270 | ||
b77b1550 | 271 | return best; |
36d6bd7d | 272 | } |
75a26779 | 273 | |
dfe43e25 DW |
274 | /* |
275 | * When the user makes "ip pim rp" configuration changes or if they change the | |
276 | * prefix-list(s) used by these statements we must tickle the upstream state | |
277 | * for each group to make them re-lookup who their RP should be. | |
278 | * | |
279 | * This is a placeholder function for now. | |
280 | */ | |
472ad383 | 281 | static void pim_rp_refresh_group_to_rp_mapping(struct pim_instance *pim) |
dfe43e25 | 282 | { |
472ad383 | 283 | pim_msdp_i_am_rp_changed(pim); |
dfe43e25 DW |
284 | } |
285 | ||
d9c9a9ee DS |
286 | void pim_rp_prefix_list_update(struct pim_instance *pim, |
287 | struct prefix_list *plist) | |
dfe43e25 | 288 | { |
d62a17ae | 289 | struct listnode *node; |
290 | struct rp_info *rp_info; | |
291 | int refresh_needed = 0; | |
292 | ||
d9c9a9ee | 293 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 294 | if (rp_info->plist |
295 | && strcmp(rp_info->plist, prefix_list_name(plist)) == 0) { | |
296 | refresh_needed = 1; | |
297 | break; | |
298 | } | |
299 | } | |
300 | ||
301 | if (refresh_needed) | |
472ad383 | 302 | pim_rp_refresh_group_to_rp_mapping(pim); |
dfe43e25 DW |
303 | } |
304 | ||
d62a17ae | 305 | static int pim_rp_check_interface_addrs(struct rp_info *rp_info, |
306 | struct pim_interface *pim_ifp) | |
7176984f | 307 | { |
d62a17ae | 308 | struct listnode *node; |
309 | struct pim_secondary_addr *sec_addr; | |
7176984f | 310 | |
d62a17ae | 311 | if (pim_ifp->primary_address.s_addr |
312 | == rp_info->rp.rpf_addr.u.prefix4.s_addr) | |
313 | return 1; | |
7176984f | 314 | |
d62a17ae | 315 | if (!pim_ifp->sec_addr_list) { |
316 | return 0; | |
317 | } | |
7176984f | 318 | |
d62a17ae | 319 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
320 | if (prefix_same(&sec_addr->addr, &rp_info->rp.rpf_addr)) { | |
321 | return 1; | |
322 | } | |
323 | } | |
7176984f | 324 | |
d62a17ae | 325 | return 0; |
7176984f | 326 | } |
327 | ||
fec883d9 DS |
328 | static void pim_rp_check_interfaces(struct pim_instance *pim, |
329 | struct rp_info *rp_info) | |
00d07c6f | 330 | { |
d62a17ae | 331 | struct interface *ifp; |
00d07c6f | 332 | |
d62a17ae | 333 | rp_info->i_am_rp = 0; |
451fda4f | 334 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 335 | struct pim_interface *pim_ifp = ifp->info; |
00d07c6f | 336 | |
d62a17ae | 337 | if (!pim_ifp) |
338 | continue; | |
00d07c6f | 339 | |
d62a17ae | 340 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { |
341 | rp_info->i_am_rp = 1; | |
342 | } | |
343 | } | |
00d07c6f DS |
344 | } |
345 | ||
fec883d9 DS |
346 | int pim_rp_new(struct pim_instance *pim, const char *rp, |
347 | const char *group_range, const char *plist) | |
75a26779 | 348 | { |
d62a17ae | 349 | int result = 0; |
350 | struct rp_info *rp_info; | |
351 | struct rp_info *rp_all; | |
352 | struct prefix group_all; | |
353 | struct listnode *node, *nnode; | |
354 | struct rp_info *tmp_rp_info; | |
355 | char buffer[BUFSIZ]; | |
356 | struct prefix nht_p; | |
357 | struct pim_nexthop_cache pnc; | |
89b68082 | 358 | struct route_node *rn; |
d62a17ae | 359 | |
360 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); | |
d62a17ae | 361 | |
362 | if (group_range == NULL) | |
363 | result = str2prefix("224.0.0.0/4", &rp_info->group); | |
364 | else | |
365 | result = str2prefix(group_range, &rp_info->group); | |
366 | ||
367 | if (!result) { | |
368 | XFREE(MTYPE_PIM_RP, rp_info); | |
369 | return PIM_GROUP_BAD_ADDRESS; | |
370 | } | |
371 | ||
372 | rp_info->rp.rpf_addr.family = AF_INET; | |
373 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
374 | result = inet_pton(rp_info->rp.rpf_addr.family, rp, | |
375 | &rp_info->rp.rpf_addr.u.prefix4); | |
376 | ||
377 | if (result <= 0) { | |
378 | XFREE(MTYPE_PIM_RP, rp_info); | |
379 | return PIM_RP_BAD_ADDRESS; | |
380 | } | |
381 | ||
382 | if (plist) { | |
383 | /* | |
384 | * Return if the prefix-list is already configured for this RP | |
385 | */ | |
d9c9a9ee | 386 | if (pim_rp_find_prefix_list(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 387 | plist)) { |
388 | XFREE(MTYPE_PIM_RP, rp_info); | |
389 | return PIM_SUCCESS; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Barf if the prefix-list is already configured for an RP | |
394 | */ | |
d9c9a9ee | 395 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 396 | XFREE(MTYPE_PIM_RP, rp_info); |
397 | return PIM_RP_PFXLIST_IN_USE; | |
398 | } | |
399 | ||
400 | /* | |
401 | * Free any existing rp_info entries for this RP | |
402 | */ | |
d9c9a9ee | 403 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 404 | tmp_rp_info)) { |
405 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr | |
406 | == tmp_rp_info->rp.rpf_addr.u.prefix4.s_addr) { | |
407 | if (tmp_rp_info->plist) | |
fec883d9 | 408 | pim_rp_del(pim, rp, NULL, |
d62a17ae | 409 | tmp_rp_info->plist); |
410 | else | |
411 | pim_rp_del( | |
fec883d9 | 412 | pim, rp, |
d62a17ae | 413 | prefix2str(&tmp_rp_info->group, |
414 | buffer, BUFSIZ), | |
415 | NULL); | |
416 | } | |
417 | } | |
418 | ||
419 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
420 | } else { | |
89b68082 | 421 | |
2e8345c1 DS |
422 | if (!str2prefix("224.0.0.0/4", &group_all)) { |
423 | XFREE(MTYPE_PIM_RP, rp_info); | |
424 | return PIM_GROUP_BAD_ADDRESS; | |
425 | } | |
d9c9a9ee | 426 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 427 | |
428 | /* | |
429 | * Barf if group is a non-multicast subnet | |
430 | */ | |
431 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
432 | XFREE(MTYPE_PIM_RP, rp_info); | |
433 | return PIM_GROUP_BAD_ADDRESS; | |
434 | } | |
435 | ||
436 | /* | |
437 | * Remove any prefix-list rp_info entries for this RP | |
438 | */ | |
d9c9a9ee | 439 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 440 | tmp_rp_info)) { |
441 | if (tmp_rp_info->plist | |
442 | && rp_info->rp.rpf_addr.u.prefix4.s_addr | |
443 | == tmp_rp_info->rp.rpf_addr.u.prefix4 | |
444 | .s_addr) { | |
fec883d9 | 445 | pim_rp_del(pim, rp, NULL, tmp_rp_info->plist); |
d62a17ae | 446 | } |
447 | } | |
448 | ||
449 | /* | |
450 | * Take over the 224.0.0.0/4 group if the rp is INADDR_NONE | |
451 | */ | |
452 | if (prefix_same(&rp_all->group, &rp_info->group) | |
453 | && pim_rpf_addr_is_inaddr_none(&rp_all->rp)) { | |
454 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; | |
455 | XFREE(MTYPE_PIM_RP, rp_info); | |
456 | ||
457 | /* Register addr with Zebra NHT */ | |
458 | nht_p.family = AF_INET; | |
459 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
460 | nht_p.u.prefix4 = | |
461 | rp_all->rp.rpf_addr.u.prefix4; // RP address | |
3d225d48 | 462 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 463 | char buf[PREFIX2STR_BUFFER]; |
464 | char buf1[PREFIX2STR_BUFFER]; | |
465 | prefix2str(&nht_p, buf, sizeof(buf)); | |
466 | prefix2str(&rp_all->group, buf1, sizeof(buf1)); | |
467 | zlog_debug( | |
468 | "%s: NHT Register rp_all addr %s grp %s ", | |
469 | __PRETTY_FUNCTION__, buf, buf1); | |
470 | } | |
471 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
472 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_all, |
473 | &pnc)) { | |
cb9c7c50 | 474 | if (!pim_ecmp_nexthop_search( |
fec883d9 | 475 | pim, &pnc, |
25b787a2 DS |
476 | &rp_all->rp.source_nexthop, &nht_p, |
477 | &rp_all->group, 1)) | |
d62a17ae | 478 | return PIM_RP_NO_PATH; |
479 | } else { | |
53bc94b0 | 480 | if (!pim_ecmp_nexthop_lookup( |
d9c9a9ee | 481 | pim, &rp_all->rp.source_nexthop, |
53bc94b0 | 482 | &nht_p, &rp_all->group, 1)) |
d62a17ae | 483 | return PIM_RP_NO_PATH; |
484 | } | |
fec883d9 | 485 | pim_rp_check_interfaces(pim, rp_all); |
472ad383 | 486 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 487 | return PIM_SUCCESS; |
488 | } | |
489 | ||
490 | /* | |
491 | * Return if the group is already configured for this RP | |
492 | */ | |
d9c9a9ee | 493 | if (pim_rp_find_exact(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 494 | &rp_info->group)) { |
495 | XFREE(MTYPE_PIM_RP, rp_info); | |
496 | return PIM_SUCCESS; | |
497 | } | |
498 | ||
499 | /* | |
500 | * Barf if this group is already covered by some other RP | |
501 | */ | |
d9c9a9ee | 502 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 503 | |
504 | if (tmp_rp_info) { | |
505 | if (tmp_rp_info->plist) { | |
506 | XFREE(MTYPE_PIM_RP, rp_info); | |
507 | return PIM_GROUP_PFXLIST_OVERLAP; | |
508 | } else { | |
509 | /* | |
510 | * If the only RP that covers this group is an | |
511 | * RP configured for | |
512 | * 224.0.0.0/4 that is fine, ignore that one. | |
513 | * For all others | |
514 | * though we must return PIM_GROUP_OVERLAP | |
515 | */ | |
89b68082 DS |
516 | if (prefix_same(&rp_info->group, |
517 | &tmp_rp_info->group)) { | |
d62a17ae | 518 | XFREE(MTYPE_PIM_RP, rp_info); |
519 | return PIM_GROUP_OVERLAP; | |
520 | } | |
521 | } | |
522 | } | |
523 | } | |
524 | ||
d9c9a9ee | 525 | listnode_add_sort(pim->rp_list, rp_info); |
89b68082 | 526 | rn = route_node_get(pim->rp_table, &rp_info->group); |
89b68082 DS |
527 | rn->info = rp_info; |
528 | ||
529 | if (PIM_DEBUG_TRACE) { | |
530 | char buf[PREFIX_STRLEN]; | |
531 | ||
996c9314 LB |
532 | zlog_debug("Allocated: %p for rp_info: %p(%s) Lock: %d", rn, |
533 | rp_info, | |
89b68082 DS |
534 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
535 | rn->lock); | |
536 | } | |
d62a17ae | 537 | |
538 | /* Register addr with Zebra NHT */ | |
539 | nht_p.family = AF_INET; | |
540 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
541 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 542 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 543 | char buf[PREFIX2STR_BUFFER]; |
544 | char buf1[PREFIX2STR_BUFFER]; | |
545 | prefix2str(&nht_p, buf, sizeof(buf)); | |
546 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
547 | zlog_debug("%s: NHT Register RP addr %s grp %s with Zebra ", | |
548 | __PRETTY_FUNCTION__, buf, buf1); | |
549 | } | |
550 | ||
551 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
552 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) { |
553 | if (!pim_ecmp_nexthop_search(pim, &pnc, | |
25b787a2 | 554 | &rp_info->rp.source_nexthop, |
cb9c7c50 | 555 | &nht_p, &rp_info->group, 1)) |
d62a17ae | 556 | return PIM_RP_NO_PATH; |
557 | } else { | |
53bc94b0 DS |
558 | if (!pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
559 | &nht_p, &rp_info->group, 1)) | |
d62a17ae | 560 | return PIM_RP_NO_PATH; |
561 | } | |
562 | ||
fec883d9 | 563 | pim_rp_check_interfaces(pim, rp_info); |
472ad383 | 564 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 565 | return PIM_SUCCESS; |
75a26779 DS |
566 | } |
567 | ||
fec883d9 DS |
568 | int pim_rp_del(struct pim_instance *pim, const char *rp, |
569 | const char *group_range, const char *plist) | |
75a26779 | 570 | { |
d62a17ae | 571 | struct prefix group; |
572 | struct in_addr rp_addr; | |
573 | struct prefix g_all; | |
574 | struct rp_info *rp_info; | |
575 | struct rp_info *rp_all; | |
576 | int result; | |
577 | struct prefix nht_p; | |
89b68082 DS |
578 | struct route_node *rn; |
579 | bool was_plist = false; | |
d62a17ae | 580 | |
581 | if (group_range == NULL) | |
582 | result = str2prefix("224.0.0.0/4", &group); | |
583 | else | |
584 | result = str2prefix(group_range, &group); | |
585 | ||
586 | if (!result) | |
587 | return PIM_GROUP_BAD_ADDRESS; | |
588 | ||
589 | result = inet_pton(AF_INET, rp, &rp_addr); | |
590 | if (result <= 0) | |
591 | return PIM_RP_BAD_ADDRESS; | |
592 | ||
593 | if (plist) | |
d9c9a9ee | 594 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 595 | else |
d9c9a9ee | 596 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 597 | |
598 | if (!rp_info) | |
599 | return PIM_RP_NOT_FOUND; | |
600 | ||
601 | if (rp_info->plist) { | |
602 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
603 | rp_info->plist = NULL; | |
89b68082 | 604 | was_plist = true; |
d62a17ae | 605 | } |
606 | ||
607 | /* Deregister addr with Zebra NHT */ | |
608 | nht_p.family = AF_INET; | |
609 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
610 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 611 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 612 | char buf[PREFIX2STR_BUFFER]; |
613 | prefix2str(&nht_p, buf, sizeof(buf)); | |
614 | zlog_debug("%s: Deregister RP addr %s with Zebra ", | |
615 | __PRETTY_FUNCTION__, buf); | |
616 | } | |
fec883d9 | 617 | pim_delete_tracked_nexthop(pim, &nht_p, NULL, rp_info); |
d62a17ae | 618 | |
e691f179 DS |
619 | if (!str2prefix("224.0.0.0/4", &g_all)) |
620 | return PIM_RP_BAD_ADDRESS; | |
621 | ||
d9c9a9ee | 622 | rp_all = pim_rp_find_match_group(pim, &g_all); |
d62a17ae | 623 | |
624 | if (rp_all == rp_info) { | |
625 | rp_all->rp.rpf_addr.family = AF_INET; | |
626 | rp_all->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
627 | rp_all->i_am_rp = 0; | |
628 | return PIM_SUCCESS; | |
629 | } | |
630 | ||
d9c9a9ee | 631 | listnode_delete(pim->rp_list, rp_info); |
89b68082 DS |
632 | |
633 | if (!was_plist) { | |
634 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
635 | if (rn) { | |
636 | if (rn->info != rp_info) | |
637 | zlog_err("WTF matey"); | |
638 | ||
639 | if (PIM_DEBUG_TRACE) { | |
640 | char buf[PREFIX_STRLEN]; | |
641 | ||
996c9314 LB |
642 | zlog_debug( |
643 | "%s:Found for Freeing: %p for rp_info: %p(%s) Lock: %d", | |
644 | __PRETTY_FUNCTION__, rn, rp_info, | |
645 | prefix2str(&rp_info->group, buf, | |
646 | sizeof(buf)), | |
647 | rn->lock); | |
89b68082 DS |
648 | } |
649 | rn->info = NULL; | |
650 | route_unlock_node(rn); | |
651 | route_unlock_node(rn); | |
652 | } | |
653 | } | |
654 | ||
472ad383 | 655 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f DS |
656 | |
657 | XFREE(MTYPE_PIM_RP, rp_info); | |
d62a17ae | 658 | return PIM_SUCCESS; |
75a26779 | 659 | } |
13afbd05 | 660 | |
fec883d9 | 661 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 662 | { |
d62a17ae | 663 | struct listnode *node; |
664 | struct rp_info *rp_info; | |
d62a17ae | 665 | struct prefix nht_p; |
666 | struct pim_nexthop_cache pnc; | |
667 | ||
d9c9a9ee | 668 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 669 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
670 | continue; | |
671 | ||
672 | nht_p.family = AF_INET; | |
673 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
674 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
675 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
676 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
677 | pim_ecmp_nexthop_search(pim, &pnc, | |
cb9c7c50 DS |
678 | &rp_info->rp.source_nexthop, |
679 | &nht_p, &rp_info->group, 1); | |
680 | else { | |
3d225d48 | 681 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 682 | char buf[PREFIX2STR_BUFFER]; |
683 | prefix2str(&nht_p, buf, sizeof(buf)); | |
684 | zlog_debug( | |
685 | "%s: NHT Local Nexthop not found for RP %s ", | |
686 | __PRETTY_FUNCTION__, buf); | |
687 | } | |
ff5d90c2 DS |
688 | if (!pim_ecmp_nexthop_lookup(pim, |
689 | &rp_info->rp.source_nexthop, | |
690 | &nht_p, &rp_info->group, 1)) | |
3d225d48 | 691 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 692 | zlog_debug( |
693 | "Unable to lookup nexthop for rp specified"); | |
d62a17ae | 694 | } |
695 | } | |
13afbd05 DS |
696 | } |
697 | ||
54b97c74 | 698 | /* |
7176984f | 699 | * Checks to see if we should elect ourself the actual RP when new if |
700 | * addresses are added against an interface. | |
54b97c74 | 701 | */ |
d62a17ae | 702 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 703 | { |
d62a17ae | 704 | struct listnode *node; |
705 | struct rp_info *rp_info; | |
706 | bool i_am_rp_changed = false; | |
d9c9a9ee | 707 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 708 | |
d9c9a9ee | 709 | if (pim->rp_list == NULL) |
d62a17ae | 710 | return; |
711 | ||
d9c9a9ee | 712 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 713 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
714 | continue; | |
715 | ||
716 | /* if i_am_rp is already set nothing to be done (adding new | |
717 | * addresses | |
718 | * is not going to make a difference). */ | |
719 | if (rp_info->i_am_rp) { | |
720 | continue; | |
721 | } | |
722 | ||
723 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
724 | i_am_rp_changed = true; | |
725 | rp_info->i_am_rp = 1; | |
3d225d48 | 726 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 727 | char rp[PREFIX_STRLEN]; |
728 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
729 | rp, sizeof(rp)); | |
730 | zlog_debug("%s: %s: i am rp", __func__, rp); | |
731 | } | |
732 | } | |
733 | } | |
734 | ||
735 | if (i_am_rp_changed) { | |
472ad383 | 736 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 737 | } |
7176984f | 738 | } |
36d6bd7d | 739 | |
7176984f | 740 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
741 | * are removed. Removing numbers is an uncommon event in an active network | |
742 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 743 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 744 | { |
d62a17ae | 745 | struct listnode *node; |
746 | struct rp_info *rp_info; | |
747 | bool i_am_rp_changed = false; | |
748 | int old_i_am_rp; | |
749 | ||
d9c9a9ee | 750 | if (pim->rp_list == NULL) |
d62a17ae | 751 | return; |
752 | ||
d9c9a9ee | 753 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 754 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
755 | continue; | |
756 | ||
757 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 758 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 759 | |
760 | if (old_i_am_rp != rp_info->i_am_rp) { | |
761 | i_am_rp_changed = true; | |
3d225d48 | 762 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 763 | char rp[PREFIX_STRLEN]; |
764 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
765 | rp, sizeof(rp)); | |
766 | if (rp_info->i_am_rp) { | |
767 | zlog_debug("%s: %s: i am rp", __func__, | |
768 | rp); | |
769 | } else { | |
770 | zlog_debug("%s: %s: i am no longer rp", | |
771 | __func__, rp); | |
772 | } | |
773 | } | |
774 | } | |
775 | } | |
776 | ||
777 | if (i_am_rp_changed) { | |
472ad383 | 778 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 779 | } |
54b97c74 DS |
780 | } |
781 | ||
782 | /* | |
783 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
784 | * this router is the RP for the group. | |
785 | * | |
786 | * Since we only have static RP, all groups are part of this RP | |
787 | */ | |
d9c9a9ee | 788 | int pim_rp_i_am_rp(struct pim_instance *pim, struct in_addr group) |
54b97c74 | 789 | { |
d62a17ae | 790 | struct prefix g; |
791 | struct rp_info *rp_info; | |
36d6bd7d | 792 | |
d62a17ae | 793 | memset(&g, 0, sizeof(g)); |
794 | g.family = AF_INET; | |
795 | g.prefixlen = 32; | |
796 | g.u.prefix4 = group; | |
36d6bd7d | 797 | |
d9c9a9ee | 798 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 799 | |
d62a17ae | 800 | if (rp_info) |
801 | return rp_info->i_am_rp; | |
36d6bd7d | 802 | |
d62a17ae | 803 | return 0; |
54b97c74 DS |
804 | } |
805 | ||
71694057 DS |
806 | /* |
807 | * RP(G) | |
808 | * | |
809 | * Return the RP that the Group belongs too. | |
810 | */ | |
fec883d9 | 811 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, struct in_addr group) |
71694057 | 812 | { |
d62a17ae | 813 | struct prefix g; |
814 | struct rp_info *rp_info; | |
815 | ||
816 | memset(&g, 0, sizeof(g)); | |
817 | g.family = AF_INET; | |
818 | g.prefixlen = 32; | |
819 | g.u.prefix4 = group; | |
820 | ||
d9c9a9ee | 821 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 822 | |
823 | if (rp_info) { | |
824 | struct prefix nht_p; | |
825 | struct pim_nexthop_cache pnc; | |
826 | /* Register addr with Zebra NHT */ | |
827 | nht_p.family = AF_INET; | |
828 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
829 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 830 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 831 | char buf[PREFIX2STR_BUFFER]; |
832 | char buf1[PREFIX2STR_BUFFER]; | |
833 | prefix2str(&nht_p, buf, sizeof(buf)); | |
834 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
835 | zlog_debug( | |
836 | "%s: NHT Register RP addr %s grp %s with Zebra", | |
837 | __PRETTY_FUNCTION__, buf, buf1); | |
838 | } | |
839 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
840 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
841 | pim_ecmp_nexthop_search(pim, &pnc, | |
d62a17ae | 842 | &rp_info->rp.source_nexthop, |
843 | &nht_p, &rp_info->group, 1); | |
cb9c7c50 | 844 | else { |
3d225d48 | 845 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 846 | char buf[PREFIX2STR_BUFFER]; |
847 | char buf1[PREFIX2STR_BUFFER]; | |
848 | prefix2str(&nht_p, buf, sizeof(buf)); | |
849 | prefix2str(&g, buf1, sizeof(buf1)); | |
850 | zlog_debug( | |
851 | "%s: Nexthop cache not found for RP %s grp %s register with Zebra", | |
852 | __PRETTY_FUNCTION__, buf, buf1); | |
853 | } | |
bfc92019 | 854 | pim_rpf_set_refresh_time(pim); |
ff5d90c2 DS |
855 | pim_ecmp_nexthop_lookup(pim, |
856 | &rp_info->rp.source_nexthop, | |
53bc94b0 | 857 | &nht_p, &rp_info->group, 1); |
d62a17ae | 858 | } |
859 | return (&rp_info->rp); | |
860 | } | |
861 | ||
862 | // About to Go Down | |
863 | return NULL; | |
71694057 DS |
864 | } |
865 | ||
8f5f5e91 DS |
866 | /* |
867 | * Set the upstream IP address we want to talk to based upon | |
868 | * the rp configured and the source address | |
869 | * | |
870 | * If we have don't have a RP configured and the source address is * | |
871 | * then return failure. | |
872 | * | |
873 | */ | |
d9c9a9ee DS |
874 | int pim_rp_set_upstream_addr(struct pim_instance *pim, struct in_addr *up, |
875 | struct in_addr source, struct in_addr group) | |
8f5f5e91 | 876 | { |
d62a17ae | 877 | struct rp_info *rp_info; |
878 | struct prefix g; | |
36d6bd7d | 879 | |
d62a17ae | 880 | memset(&g, 0, sizeof(g)); |
881 | g.family = AF_INET; | |
882 | g.prefixlen = 32; | |
883 | g.u.prefix4 = group; | |
36d6bd7d | 884 | |
d9c9a9ee | 885 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 886 | |
d62a17ae | 887 | if ((pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
888 | && (source.s_addr == INADDR_ANY)) { | |
3d225d48 | 889 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 890 | zlog_debug("%s: Received a (*,G) with no RP configured", |
891 | __PRETTY_FUNCTION__); | |
892 | return 0; | |
893 | } | |
8f5f5e91 | 894 | |
d62a17ae | 895 | *up = (source.s_addr == INADDR_ANY) ? rp_info->rp.rpf_addr.u.prefix4 |
896 | : source; | |
8f5f5e91 | 897 | |
d62a17ae | 898 | return 1; |
8f5f5e91 | 899 | } |
75a26779 | 900 | |
0c8b717e DS |
901 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
902 | const char *spaces) | |
75a26779 | 903 | { |
d62a17ae | 904 | struct listnode *node; |
905 | struct rp_info *rp_info; | |
906 | char rp_buffer[32]; | |
907 | char group_buffer[32]; | |
908 | int count = 0; | |
909 | ||
d9c9a9ee | 910 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 911 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
912 | continue; | |
913 | ||
914 | if (rp_info->plist) | |
0c8b717e | 915 | vty_out(vty, "%sip pim rp %s prefix-list %s\n", spaces, |
d62a17ae | 916 | inet_ntop(AF_INET, |
917 | &rp_info->rp.rpf_addr.u.prefix4, | |
918 | rp_buffer, 32), | |
919 | rp_info->plist); | |
920 | else | |
0c8b717e | 921 | vty_out(vty, "%sip pim rp %s %s\n", spaces, |
d62a17ae | 922 | inet_ntop(AF_INET, |
923 | &rp_info->rp.rpf_addr.u.prefix4, | |
924 | rp_buffer, 32), | |
925 | prefix2str(&rp_info->group, group_buffer, 32)); | |
926 | count++; | |
927 | } | |
928 | ||
929 | return count; | |
75a26779 DS |
930 | } |
931 | ||
fec883d9 DS |
932 | int pim_rp_check_is_my_ip_address(struct pim_instance *pim, |
933 | struct in_addr group, | |
d62a17ae | 934 | struct in_addr dest_addr) |
75a26779 | 935 | { |
d62a17ae | 936 | struct rp_info *rp_info; |
937 | struct prefix g; | |
938 | ||
939 | memset(&g, 0, sizeof(g)); | |
940 | g.family = AF_INET; | |
941 | g.prefixlen = 32; | |
942 | g.u.prefix4 = group; | |
943 | ||
d9c9a9ee | 944 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 945 | /* |
946 | * See if we can short-cut some? | |
947 | * This might not make sense if we ever leave a static RP | |
948 | * type of configuration. | |
949 | * Note - Premature optimization might bite our patooeys' here. | |
950 | */ | |
d9c9a9ee | 951 | if (I_am_RP(pim, group)) { |
d62a17ae | 952 | if (dest_addr.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr) |
953 | return 1; | |
954 | } | |
955 | ||
fec883d9 | 956 | if (if_lookup_exact_address(&dest_addr, AF_INET, pim->vrf_id)) |
d62a17ae | 957 | return 1; |
958 | ||
959 | return 0; | |
75a26779 | 960 | } |
00d07c6f | 961 | |
64c86530 | 962 | void pim_rp_show_information(struct pim_instance *pim, struct vty *vty, |
d7c0a89a | 963 | uint8_t uj) |
00d07c6f | 964 | { |
d62a17ae | 965 | struct rp_info *rp_info; |
966 | struct rp_info *prev_rp_info = NULL; | |
967 | struct listnode *node; | |
968 | ||
969 | json_object *json = NULL; | |
970 | json_object *json_rp_rows = NULL; | |
971 | json_object *json_row = NULL; | |
972 | ||
973 | if (uj) | |
974 | json = json_object_new_object(); | |
975 | else | |
976 | vty_out(vty, | |
977 | "RP address group/prefix-list OIF I am RP\n"); | |
978 | ||
d9c9a9ee | 979 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 980 | if (!pim_rpf_addr_is_inaddr_none(&rp_info->rp)) { |
981 | char buf[48]; | |
982 | ||
983 | if (uj) { | |
984 | /* | |
985 | * If we have moved on to a new RP then add the | |
986 | * entry for the previous RP | |
987 | */ | |
988 | if (prev_rp_info | |
989 | && prev_rp_info->rp.rpf_addr.u.prefix4 | |
990 | .s_addr | |
991 | != rp_info->rp.rpf_addr.u.prefix4 | |
992 | .s_addr) { | |
993 | json_object_object_add( | |
994 | json, | |
995 | inet_ntoa(prev_rp_info->rp | |
996 | .rpf_addr.u | |
997 | .prefix4), | |
998 | json_rp_rows); | |
999 | json_rp_rows = NULL; | |
1000 | } | |
1001 | ||
1002 | if (!json_rp_rows) | |
1003 | json_rp_rows = json_object_new_array(); | |
1004 | ||
1005 | json_row = json_object_new_object(); | |
1006 | if (rp_info->rp.source_nexthop.interface) | |
1007 | json_object_string_add( | |
1008 | json_row, "outboundInterface", | |
1009 | rp_info->rp.source_nexthop | |
1010 | .interface->name); | |
1011 | ||
1012 | if (rp_info->i_am_rp) | |
1013 | json_object_boolean_true_add(json_row, | |
1014 | "iAmRP"); | |
1015 | ||
1016 | if (rp_info->plist) | |
1017 | json_object_string_add(json_row, | |
1018 | "prefixList", | |
1019 | rp_info->plist); | |
1020 | else | |
1021 | json_object_string_add( | |
1022 | json_row, "group", | |
1023 | prefix2str(&rp_info->group, buf, | |
1024 | 48)); | |
1025 | ||
1026 | json_object_array_add(json_rp_rows, json_row); | |
1027 | } else { | |
1028 | vty_out(vty, "%-15s ", | |
1029 | inet_ntoa(rp_info->rp.rpf_addr.u | |
1030 | .prefix4)); | |
1031 | ||
1032 | if (rp_info->plist) | |
1033 | vty_out(vty, "%-18s ", rp_info->plist); | |
1034 | else | |
1035 | vty_out(vty, "%-18s ", | |
1036 | prefix2str(&rp_info->group, buf, | |
1037 | 48)); | |
1038 | ||
1039 | if (rp_info->rp.source_nexthop.interface) | |
1040 | vty_out(vty, "%-10s ", | |
1041 | rp_info->rp.source_nexthop | |
1042 | .interface->name); | |
1043 | else | |
1044 | vty_out(vty, "%-10s ", "(Unknown)"); | |
1045 | ||
1046 | if (rp_info->i_am_rp) | |
1047 | vty_out(vty, "yes\n"); | |
1048 | else | |
1049 | vty_out(vty, "no\n"); | |
1050 | } | |
1051 | ||
1052 | prev_rp_info = rp_info; | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | if (uj) { | |
1057 | if (prev_rp_info && json_rp_rows) | |
1058 | json_object_object_add( | |
1059 | json, | |
1060 | inet_ntoa(prev_rp_info->rp.rpf_addr.u.prefix4), | |
1061 | json_rp_rows); | |
1062 | ||
9d303b37 DL |
1063 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
1064 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 1065 | json_object_free(json); |
1066 | } | |
00d07c6f | 1067 | } |
cba44481 | 1068 | |
fec883d9 | 1069 | void pim_resolve_rp_nh(struct pim_instance *pim) |
cba44481 | 1070 | { |
d62a17ae | 1071 | struct listnode *node = NULL; |
1072 | struct rp_info *rp_info = NULL; | |
1073 | struct nexthop *nh_node = NULL; | |
1074 | struct prefix nht_p; | |
1075 | struct pim_nexthop_cache pnc; | |
1076 | struct pim_neighbor *nbr = NULL; | |
1077 | ||
d9c9a9ee | 1078 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 1079 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
1080 | continue; | |
1081 | ||
1082 | nht_p.family = AF_INET; | |
1083 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
1084 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
1085 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 | 1086 | if (!pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, |
25bdac42 | 1087 | &pnc)) |
cb9c7c50 DS |
1088 | continue; |
1089 | ||
1090 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
1091 | if (nh_node->gate.ipv4.s_addr != 0) | |
1092 | continue; | |
1093 | ||
1094 | struct interface *ifp1 = if_lookup_by_index( | |
fec883d9 | 1095 | nh_node->ifindex, pim->vrf_id); |
cb9c7c50 DS |
1096 | nbr = pim_neighbor_find_if(ifp1); |
1097 | if (!nbr) | |
1098 | continue; | |
1099 | ||
1100 | nh_node->gate.ipv4 = nbr->source_addr; | |
3d225d48 | 1101 | if (PIM_DEBUG_PIM_NHT_RP) { |
cb9c7c50 DS |
1102 | char str[PREFIX_STRLEN]; |
1103 | char str1[INET_ADDRSTRLEN]; | |
1104 | pim_inet4_dump("<nht_nbr?>", nbr->source_addr, | |
1105 | str1, sizeof(str1)); | |
1106 | pim_addr_dump("<nht_addr?>", &nht_p, str, | |
1107 | sizeof(str)); | |
1108 | zlog_debug( | |
1109 | "%s: addr %s new nexthop addr %s interface %s", | |
1110 | __PRETTY_FUNCTION__, str, str1, | |
1111 | ifp1->name); | |
d62a17ae | 1112 | } |
1113 | } | |
1114 | } | |
cba44481 | 1115 | } |