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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" | |
75a26779 | 37 | #include "pim_vty.h" |
54b97c74 | 38 | #include "pim_str.h" |
7176984f | 39 | #include "pim_iface.h" |
8f5f5e91 | 40 | #include "pim_rp.h" |
ed66602c DS |
41 | #include "pim_str.h" |
42 | #include "pim_rpf.h" | |
13afbd05 | 43 | #include "pim_sock.h" |
36d6bd7d | 44 | #include "pim_memory.h" |
00d07c6f | 45 | #include "pim_iface.h" |
7667c556 | 46 | #include "pim_msdp.h" |
1bc98276 | 47 | #include "pim_nht.h" |
8f5f5e91 | 48 | |
36d6bd7d | 49 | |
c2cf4b02 DS |
50 | /* Cleanup pim->rpf_hash each node data */ |
51 | void pim_rp_list_hash_clean(void *data) | |
52 | { | |
7c591950 | 53 | struct pim_nexthop_cache *pnc = (struct pim_nexthop_cache *)data; |
c2cf4b02 | 54 | |
6a154c88 | 55 | list_delete(&pnc->rp_list); |
6e1ef388 | 56 | |
7c591950 DS |
57 | hash_clean(pnc->upstream_hash, NULL); |
58 | hash_free(pnc->upstream_hash); | |
59 | pnc->upstream_hash = NULL; | |
1159c202 SP |
60 | if (pnc->nexthop) |
61 | nexthops_free(pnc->nexthop); | |
6e1ef388 DS |
62 | |
63 | XFREE(MTYPE_PIM_NEXTHOP_CACHE, pnc); | |
c2cf4b02 DS |
64 | } |
65 | ||
d62a17ae | 66 | static void pim_rp_info_free(struct rp_info *rp_info) |
36d6bd7d | 67 | { |
ff823fc9 DS |
68 | if (rp_info->plist) |
69 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
70 | ||
d62a17ae | 71 | XFREE(MTYPE_PIM_RP, rp_info); |
36d6bd7d DS |
72 | } |
73 | ||
d62a17ae | 74 | int pim_rp_list_cmp(void *v1, void *v2) |
36d6bd7d | 75 | { |
d62a17ae | 76 | struct rp_info *rp1 = (struct rp_info *)v1; |
77 | struct rp_info *rp2 = (struct rp_info *)v2; | |
78 | ||
79 | /* | |
80 | * Sort by RP IP address | |
81 | */ | |
82 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
83 | < rp2->rp.rpf_addr.u.prefix4.s_addr) | |
84 | return -1; | |
85 | ||
86 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
87 | > rp2->rp.rpf_addr.u.prefix4.s_addr) | |
88 | return 1; | |
89 | ||
90 | /* | |
91 | * Sort by group IP address | |
92 | */ | |
93 | if (rp1->group.u.prefix4.s_addr < rp2->group.u.prefix4.s_addr) | |
94 | return -1; | |
95 | ||
96 | if (rp1->group.u.prefix4.s_addr > rp2->group.u.prefix4.s_addr) | |
97 | return 1; | |
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 | |
2e8345c1 | 115 | if (!str2prefix("224.0.0.0/4", &rp_info->group)) { |
450971aa | 116 | flog_err(EC_LIB_DEVELOPMENT, |
1c50c1c0 | 117 | "Unable to convert 224.0.0.0/4 to 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 | } | |
d62a17ae | 123 | rp_info->group.family = AF_INET; |
124 | rp_info->rp.rpf_addr.family = AF_INET; | |
125 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
126 | rp_info->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
36d6bd7d | 127 | |
d9c9a9ee | 128 | listnode_add(pim->rp_list, rp_info); |
89b68082 DS |
129 | |
130 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
89b68082 DS |
131 | rn->info = rp_info; |
132 | if (PIM_DEBUG_TRACE) | |
996c9314 LB |
133 | zlog_debug( |
134 | "Allocated: %p for rp_info: %p(224.0.0.0/4) Lock: %d", | |
135 | rn, rp_info, rn->lock); | |
36d6bd7d DS |
136 | } |
137 | ||
d9c9a9ee | 138 | void pim_rp_free(struct pim_instance *pim) |
36d6bd7d | 139 | { |
d9c9a9ee | 140 | if (pim->rp_list) |
6a154c88 | 141 | list_delete(&pim->rp_list); |
36d6bd7d DS |
142 | } |
143 | ||
dfe43e25 DW |
144 | /* |
145 | * Given an RP's prefix-list, return the RP's rp_info for that prefix-list | |
146 | */ | |
d9c9a9ee DS |
147 | static struct rp_info *pim_rp_find_prefix_list(struct pim_instance *pim, |
148 | struct in_addr rp, | |
d62a17ae | 149 | 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)) { |
d62a17ae | 155 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
156 | && rp_info->plist && strcmp(rp_info->plist, plist) == 0) { | |
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 | */ |
d9c9a9ee DS |
185 | static struct rp_info *pim_rp_find_exact(struct pim_instance *pim, |
186 | struct in_addr rp, | |
123214ef | 187 | const struct prefix *group) |
36d6bd7d | 188 | { |
d62a17ae | 189 | struct listnode *node; |
190 | struct rp_info *rp_info; | |
36d6bd7d | 191 | |
d9c9a9ee | 192 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 193 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
194 | && prefix_same(&rp_info->group, group)) | |
195 | return rp_info; | |
196 | } | |
54b97c74 | 197 | |
d62a17ae | 198 | return NULL; |
36d6bd7d DS |
199 | } |
200 | ||
dfe43e25 DW |
201 | /* |
202 | * Given a group, return the rp_info for that group | |
203 | */ | |
d9c9a9ee | 204 | static struct rp_info *pim_rp_find_match_group(struct pim_instance *pim, |
123214ef | 205 | const struct prefix *group) |
36d6bd7d | 206 | { |
d62a17ae | 207 | struct listnode *node; |
b77b1550 | 208 | struct rp_info *best = NULL; |
d62a17ae | 209 | struct rp_info *rp_info; |
210 | struct prefix_list *plist; | |
123214ef | 211 | const struct prefix *p, *bp; |
89b68082 | 212 | struct route_node *rn; |
d62a17ae | 213 | |
4646b86a | 214 | bp = NULL; |
d9c9a9ee | 215 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 216 | if (rp_info->plist) { |
217 | plist = prefix_list_lookup(AFI_IP, rp_info->plist); | |
218 | ||
996c9314 LB |
219 | if (prefix_list_apply_which_prefix(plist, &p, group) |
220 | == PREFIX_DENY) | |
b77b1550 DS |
221 | continue; |
222 | ||
223 | if (!best) { | |
224 | best = rp_info; | |
225 | bp = p; | |
226 | continue; | |
227 | } | |
228 | ||
4646b86a | 229 | if (bp && bp->prefixlen < p->prefixlen) { |
b77b1550 DS |
230 | best = rp_info; |
231 | bp = p; | |
232 | } | |
d62a17ae | 233 | } |
234 | } | |
235 | ||
89b68082 DS |
236 | rn = route_node_match(pim->rp_table, group); |
237 | if (!rn) { | |
af4c2728 | 238 | flog_err( |
450971aa | 239 | EC_LIB_DEVELOPMENT, |
996c9314 LB |
240 | "%s: BUG We should have found default group information\n", |
241 | __PRETTY_FUNCTION__); | |
89b68082 DS |
242 | return best; |
243 | } | |
244 | ||
245 | rp_info = rn->info; | |
246 | if (PIM_DEBUG_TRACE) { | |
247 | char buf[PREFIX_STRLEN]; | |
248 | ||
249 | route_unlock_node(rn); | |
996c9314 LB |
250 | zlog_debug("Lookedup: %p for rp_info: %p(%s) Lock: %d", rn, |
251 | rp_info, | |
89b68082 DS |
252 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
253 | rn->lock); | |
254 | } | |
255 | ||
256 | if (!best) | |
257 | return rp_info; | |
258 | ||
259 | if (rp_info->group.prefixlen < best->group.prefixlen) | |
260 | best = rp_info; | |
261 | ||
b77b1550 | 262 | return best; |
36d6bd7d | 263 | } |
75a26779 | 264 | |
dfe43e25 DW |
265 | /* |
266 | * When the user makes "ip pim rp" configuration changes or if they change the | |
267 | * prefix-list(s) used by these statements we must tickle the upstream state | |
268 | * for each group to make them re-lookup who their RP should be. | |
269 | * | |
270 | * This is a placeholder function for now. | |
271 | */ | |
472ad383 | 272 | static void pim_rp_refresh_group_to_rp_mapping(struct pim_instance *pim) |
dfe43e25 | 273 | { |
472ad383 | 274 | pim_msdp_i_am_rp_changed(pim); |
dfe43e25 DW |
275 | } |
276 | ||
d9c9a9ee DS |
277 | void pim_rp_prefix_list_update(struct pim_instance *pim, |
278 | struct prefix_list *plist) | |
dfe43e25 | 279 | { |
d62a17ae | 280 | struct listnode *node; |
281 | struct rp_info *rp_info; | |
282 | int refresh_needed = 0; | |
283 | ||
d9c9a9ee | 284 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 285 | if (rp_info->plist |
286 | && strcmp(rp_info->plist, prefix_list_name(plist)) == 0) { | |
287 | refresh_needed = 1; | |
288 | break; | |
289 | } | |
290 | } | |
291 | ||
292 | if (refresh_needed) | |
472ad383 | 293 | pim_rp_refresh_group_to_rp_mapping(pim); |
dfe43e25 DW |
294 | } |
295 | ||
d62a17ae | 296 | static int pim_rp_check_interface_addrs(struct rp_info *rp_info, |
297 | struct pim_interface *pim_ifp) | |
7176984f | 298 | { |
d62a17ae | 299 | struct listnode *node; |
300 | struct pim_secondary_addr *sec_addr; | |
7176984f | 301 | |
d62a17ae | 302 | if (pim_ifp->primary_address.s_addr |
303 | == rp_info->rp.rpf_addr.u.prefix4.s_addr) | |
304 | return 1; | |
7176984f | 305 | |
d62a17ae | 306 | if (!pim_ifp->sec_addr_list) { |
307 | return 0; | |
308 | } | |
7176984f | 309 | |
d62a17ae | 310 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
311 | if (prefix_same(&sec_addr->addr, &rp_info->rp.rpf_addr)) { | |
312 | return 1; | |
313 | } | |
314 | } | |
7176984f | 315 | |
d62a17ae | 316 | return 0; |
7176984f | 317 | } |
318 | ||
fec883d9 DS |
319 | static void pim_rp_check_interfaces(struct pim_instance *pim, |
320 | struct rp_info *rp_info) | |
00d07c6f | 321 | { |
d62a17ae | 322 | struct interface *ifp; |
00d07c6f | 323 | |
d62a17ae | 324 | rp_info->i_am_rp = 0; |
451fda4f | 325 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 326 | struct pim_interface *pim_ifp = ifp->info; |
00d07c6f | 327 | |
d62a17ae | 328 | if (!pim_ifp) |
329 | continue; | |
00d07c6f | 330 | |
d62a17ae | 331 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { |
332 | rp_info->i_am_rp = 1; | |
333 | } | |
334 | } | |
00d07c6f DS |
335 | } |
336 | ||
fec883d9 DS |
337 | int pim_rp_new(struct pim_instance *pim, const char *rp, |
338 | const char *group_range, const char *plist) | |
75a26779 | 339 | { |
d62a17ae | 340 | int result = 0; |
341 | struct rp_info *rp_info; | |
342 | struct rp_info *rp_all; | |
343 | struct prefix group_all; | |
344 | struct listnode *node, *nnode; | |
345 | struct rp_info *tmp_rp_info; | |
346 | char buffer[BUFSIZ]; | |
347 | struct prefix nht_p; | |
6b44b401 | 348 | struct prefix temp; |
d62a17ae | 349 | struct pim_nexthop_cache pnc; |
89b68082 | 350 | struct route_node *rn; |
d62a17ae | 351 | |
352 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); | |
d62a17ae | 353 | |
354 | if (group_range == NULL) | |
355 | result = str2prefix("224.0.0.0/4", &rp_info->group); | |
6b44b401 | 356 | else { |
d62a17ae | 357 | result = str2prefix(group_range, &rp_info->group); |
6b44b401 SP |
358 | if (result) { |
359 | prefix_copy(&temp, &rp_info->group); | |
360 | apply_mask(&temp); | |
361 | if (!prefix_same(&rp_info->group, &temp)) { | |
362 | XFREE(MTYPE_PIM_RP, rp_info); | |
363 | return PIM_GROUP_BAD_ADDR_MASK_COMBO; | |
364 | } | |
365 | } | |
366 | } | |
d62a17ae | 367 | |
368 | if (!result) { | |
369 | XFREE(MTYPE_PIM_RP, rp_info); | |
370 | return PIM_GROUP_BAD_ADDRESS; | |
371 | } | |
372 | ||
373 | rp_info->rp.rpf_addr.family = AF_INET; | |
374 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
375 | result = inet_pton(rp_info->rp.rpf_addr.family, rp, | |
376 | &rp_info->rp.rpf_addr.u.prefix4); | |
377 | ||
378 | if (result <= 0) { | |
379 | XFREE(MTYPE_PIM_RP, rp_info); | |
380 | return PIM_RP_BAD_ADDRESS; | |
381 | } | |
382 | ||
383 | if (plist) { | |
384 | /* | |
385 | * Return if the prefix-list is already configured for this RP | |
386 | */ | |
d9c9a9ee | 387 | if (pim_rp_find_prefix_list(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 388 | plist)) { |
389 | XFREE(MTYPE_PIM_RP, rp_info); | |
390 | return PIM_SUCCESS; | |
391 | } | |
392 | ||
393 | /* | |
394 | * Barf if the prefix-list is already configured for an RP | |
395 | */ | |
d9c9a9ee | 396 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 397 | XFREE(MTYPE_PIM_RP, rp_info); |
398 | return PIM_RP_PFXLIST_IN_USE; | |
399 | } | |
400 | ||
401 | /* | |
402 | * Free any existing rp_info entries for this RP | |
403 | */ | |
d9c9a9ee | 404 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 405 | tmp_rp_info)) { |
406 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr | |
407 | == tmp_rp_info->rp.rpf_addr.u.prefix4.s_addr) { | |
408 | if (tmp_rp_info->plist) | |
fec883d9 | 409 | pim_rp_del(pim, rp, NULL, |
d62a17ae | 410 | tmp_rp_info->plist); |
411 | else | |
412 | pim_rp_del( | |
fec883d9 | 413 | pim, rp, |
d62a17ae | 414 | prefix2str(&tmp_rp_info->group, |
415 | buffer, BUFSIZ), | |
416 | NULL); | |
417 | } | |
418 | } | |
419 | ||
420 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
421 | } else { | |
89b68082 | 422 | |
2e8345c1 DS |
423 | if (!str2prefix("224.0.0.0/4", &group_all)) { |
424 | XFREE(MTYPE_PIM_RP, rp_info); | |
425 | return PIM_GROUP_BAD_ADDRESS; | |
426 | } | |
d9c9a9ee | 427 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 428 | |
429 | /* | |
430 | * Barf if group is a non-multicast subnet | |
431 | */ | |
432 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
433 | XFREE(MTYPE_PIM_RP, rp_info); | |
434 | return PIM_GROUP_BAD_ADDRESS; | |
435 | } | |
436 | ||
437 | /* | |
438 | * Remove any prefix-list rp_info entries for this RP | |
439 | */ | |
d9c9a9ee | 440 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 441 | tmp_rp_info)) { |
442 | if (tmp_rp_info->plist | |
443 | && rp_info->rp.rpf_addr.u.prefix4.s_addr | |
444 | == tmp_rp_info->rp.rpf_addr.u.prefix4 | |
445 | .s_addr) { | |
fec883d9 | 446 | pim_rp_del(pim, rp, NULL, tmp_rp_info->plist); |
d62a17ae | 447 | } |
448 | } | |
449 | ||
450 | /* | |
451 | * Take over the 224.0.0.0/4 group if the rp is INADDR_NONE | |
452 | */ | |
453 | if (prefix_same(&rp_all->group, &rp_info->group) | |
454 | && pim_rpf_addr_is_inaddr_none(&rp_all->rp)) { | |
455 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; | |
456 | XFREE(MTYPE_PIM_RP, rp_info); | |
457 | ||
458 | /* Register addr with Zebra NHT */ | |
459 | nht_p.family = AF_INET; | |
460 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
461 | nht_p.u.prefix4 = | |
462 | rp_all->rp.rpf_addr.u.prefix4; // RP address | |
3d225d48 | 463 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 464 | char buf[PREFIX2STR_BUFFER]; |
465 | char buf1[PREFIX2STR_BUFFER]; | |
466 | prefix2str(&nht_p, buf, sizeof(buf)); | |
467 | prefix2str(&rp_all->group, buf1, sizeof(buf1)); | |
468 | zlog_debug( | |
469 | "%s: NHT Register rp_all addr %s grp %s ", | |
470 | __PRETTY_FUNCTION__, buf, buf1); | |
471 | } | |
472 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
473 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_all, |
474 | &pnc)) { | |
cb9c7c50 | 475 | if (!pim_ecmp_nexthop_search( |
fec883d9 | 476 | pim, &pnc, |
25b787a2 DS |
477 | &rp_all->rp.source_nexthop, &nht_p, |
478 | &rp_all->group, 1)) | |
d62a17ae | 479 | return PIM_RP_NO_PATH; |
480 | } else { | |
53bc94b0 | 481 | if (!pim_ecmp_nexthop_lookup( |
d9c9a9ee | 482 | pim, &rp_all->rp.source_nexthop, |
53bc94b0 | 483 | &nht_p, &rp_all->group, 1)) |
d62a17ae | 484 | return PIM_RP_NO_PATH; |
485 | } | |
fec883d9 | 486 | pim_rp_check_interfaces(pim, rp_all); |
472ad383 | 487 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 488 | return PIM_SUCCESS; |
489 | } | |
490 | ||
491 | /* | |
492 | * Return if the group is already configured for this RP | |
493 | */ | |
d9c9a9ee | 494 | if (pim_rp_find_exact(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 495 | &rp_info->group)) { |
496 | XFREE(MTYPE_PIM_RP, rp_info); | |
497 | return PIM_SUCCESS; | |
498 | } | |
499 | ||
500 | /* | |
501 | * Barf if this group is already covered by some other RP | |
502 | */ | |
d9c9a9ee | 503 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 504 | |
505 | if (tmp_rp_info) { | |
506 | if (tmp_rp_info->plist) { | |
507 | XFREE(MTYPE_PIM_RP, rp_info); | |
508 | return PIM_GROUP_PFXLIST_OVERLAP; | |
509 | } else { | |
510 | /* | |
511 | * If the only RP that covers this group is an | |
512 | * RP configured for | |
513 | * 224.0.0.0/4 that is fine, ignore that one. | |
514 | * For all others | |
515 | * though we must return PIM_GROUP_OVERLAP | |
516 | */ | |
89b68082 DS |
517 | if (prefix_same(&rp_info->group, |
518 | &tmp_rp_info->group)) { | |
d62a17ae | 519 | XFREE(MTYPE_PIM_RP, rp_info); |
520 | return PIM_GROUP_OVERLAP; | |
521 | } | |
522 | } | |
523 | } | |
524 | } | |
525 | ||
d9c9a9ee | 526 | listnode_add_sort(pim->rp_list, rp_info); |
89b68082 | 527 | rn = route_node_get(pim->rp_table, &rp_info->group); |
89b68082 DS |
528 | rn->info = rp_info; |
529 | ||
530 | if (PIM_DEBUG_TRACE) { | |
531 | char buf[PREFIX_STRLEN]; | |
532 | ||
996c9314 LB |
533 | zlog_debug("Allocated: %p for rp_info: %p(%s) Lock: %d", rn, |
534 | rp_info, | |
89b68082 DS |
535 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
536 | rn->lock); | |
537 | } | |
d62a17ae | 538 | |
539 | /* Register addr with Zebra NHT */ | |
540 | nht_p.family = AF_INET; | |
541 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
542 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 543 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 544 | char buf[PREFIX2STR_BUFFER]; |
545 | char buf1[PREFIX2STR_BUFFER]; | |
546 | prefix2str(&nht_p, buf, sizeof(buf)); | |
547 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
548 | zlog_debug("%s: NHT Register RP addr %s grp %s with Zebra ", | |
549 | __PRETTY_FUNCTION__, buf, buf1); | |
550 | } | |
551 | ||
552 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
553 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) { |
554 | if (!pim_ecmp_nexthop_search(pim, &pnc, | |
25b787a2 | 555 | &rp_info->rp.source_nexthop, |
cb9c7c50 | 556 | &nht_p, &rp_info->group, 1)) |
d62a17ae | 557 | return PIM_RP_NO_PATH; |
558 | } else { | |
53bc94b0 DS |
559 | if (!pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
560 | &nht_p, &rp_info->group, 1)) | |
d62a17ae | 561 | return PIM_RP_NO_PATH; |
562 | } | |
563 | ||
fec883d9 | 564 | pim_rp_check_interfaces(pim, rp_info); |
472ad383 | 565 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 566 | return PIM_SUCCESS; |
75a26779 DS |
567 | } |
568 | ||
fec883d9 DS |
569 | int pim_rp_del(struct pim_instance *pim, const char *rp, |
570 | const char *group_range, const char *plist) | |
75a26779 | 571 | { |
d62a17ae | 572 | struct prefix group; |
573 | struct in_addr rp_addr; | |
574 | struct prefix g_all; | |
575 | struct rp_info *rp_info; | |
576 | struct rp_info *rp_all; | |
577 | int result; | |
578 | struct prefix nht_p; | |
89b68082 DS |
579 | struct route_node *rn; |
580 | bool was_plist = false; | |
d62a17ae | 581 | |
582 | if (group_range == NULL) | |
583 | result = str2prefix("224.0.0.0/4", &group); | |
584 | else | |
585 | result = str2prefix(group_range, &group); | |
586 | ||
587 | if (!result) | |
588 | return PIM_GROUP_BAD_ADDRESS; | |
589 | ||
590 | result = inet_pton(AF_INET, rp, &rp_addr); | |
591 | if (result <= 0) | |
592 | return PIM_RP_BAD_ADDRESS; | |
593 | ||
594 | if (plist) | |
d9c9a9ee | 595 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 596 | else |
d9c9a9ee | 597 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 598 | |
599 | if (!rp_info) | |
600 | return PIM_RP_NOT_FOUND; | |
601 | ||
602 | if (rp_info->plist) { | |
603 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
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) | |
af4c2728 | 637 | flog_err( |
450971aa | 638 | EC_LIB_DEVELOPMENT, |
3613d898 | 639 | "Expected rn->info to be equal to rp_info"); |
89b68082 DS |
640 | |
641 | if (PIM_DEBUG_TRACE) { | |
642 | char buf[PREFIX_STRLEN]; | |
643 | ||
996c9314 LB |
644 | zlog_debug( |
645 | "%s:Found for Freeing: %p for rp_info: %p(%s) Lock: %d", | |
646 | __PRETTY_FUNCTION__, rn, rp_info, | |
647 | prefix2str(&rp_info->group, buf, | |
648 | sizeof(buf)), | |
649 | rn->lock); | |
89b68082 DS |
650 | } |
651 | rn->info = NULL; | |
652 | route_unlock_node(rn); | |
653 | route_unlock_node(rn); | |
654 | } | |
655 | } | |
656 | ||
472ad383 | 657 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f DS |
658 | |
659 | XFREE(MTYPE_PIM_RP, rp_info); | |
d62a17ae | 660 | return PIM_SUCCESS; |
75a26779 | 661 | } |
13afbd05 | 662 | |
fec883d9 | 663 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 664 | { |
d62a17ae | 665 | struct listnode *node; |
666 | struct rp_info *rp_info; | |
d62a17ae | 667 | struct prefix nht_p; |
668 | struct pim_nexthop_cache pnc; | |
669 | ||
d9c9a9ee | 670 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 671 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
672 | continue; | |
673 | ||
674 | nht_p.family = AF_INET; | |
675 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
676 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
677 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
678 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
679 | pim_ecmp_nexthop_search(pim, &pnc, | |
cb9c7c50 DS |
680 | &rp_info->rp.source_nexthop, |
681 | &nht_p, &rp_info->group, 1); | |
682 | else { | |
3d225d48 | 683 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 684 | char buf[PREFIX2STR_BUFFER]; |
685 | prefix2str(&nht_p, buf, sizeof(buf)); | |
686 | zlog_debug( | |
687 | "%s: NHT Local Nexthop not found for RP %s ", | |
688 | __PRETTY_FUNCTION__, buf); | |
689 | } | |
ff5d90c2 DS |
690 | if (!pim_ecmp_nexthop_lookup(pim, |
691 | &rp_info->rp.source_nexthop, | |
692 | &nht_p, &rp_info->group, 1)) | |
3d225d48 | 693 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 694 | zlog_debug( |
695 | "Unable to lookup nexthop for rp specified"); | |
d62a17ae | 696 | } |
697 | } | |
13afbd05 DS |
698 | } |
699 | ||
54b97c74 | 700 | /* |
7176984f | 701 | * Checks to see if we should elect ourself the actual RP when new if |
702 | * addresses are added against an interface. | |
54b97c74 | 703 | */ |
d62a17ae | 704 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 705 | { |
d62a17ae | 706 | struct listnode *node; |
707 | struct rp_info *rp_info; | |
708 | bool i_am_rp_changed = false; | |
d9c9a9ee | 709 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 710 | |
d9c9a9ee | 711 | if (pim->rp_list == NULL) |
d62a17ae | 712 | return; |
713 | ||
d9c9a9ee | 714 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 715 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
716 | continue; | |
717 | ||
718 | /* if i_am_rp is already set nothing to be done (adding new | |
719 | * addresses | |
720 | * is not going to make a difference). */ | |
721 | if (rp_info->i_am_rp) { | |
722 | continue; | |
723 | } | |
724 | ||
725 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
726 | i_am_rp_changed = true; | |
727 | rp_info->i_am_rp = 1; | |
3d225d48 | 728 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 729 | char rp[PREFIX_STRLEN]; |
730 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
731 | rp, sizeof(rp)); | |
732 | zlog_debug("%s: %s: i am rp", __func__, rp); | |
733 | } | |
734 | } | |
735 | } | |
736 | ||
737 | if (i_am_rp_changed) { | |
472ad383 | 738 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 739 | } |
7176984f | 740 | } |
36d6bd7d | 741 | |
7176984f | 742 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
743 | * are removed. Removing numbers is an uncommon event in an active network | |
744 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 745 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 746 | { |
d62a17ae | 747 | struct listnode *node; |
748 | struct rp_info *rp_info; | |
749 | bool i_am_rp_changed = false; | |
750 | int old_i_am_rp; | |
751 | ||
d9c9a9ee | 752 | if (pim->rp_list == NULL) |
d62a17ae | 753 | return; |
754 | ||
d9c9a9ee | 755 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 756 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
757 | continue; | |
758 | ||
759 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 760 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 761 | |
762 | if (old_i_am_rp != rp_info->i_am_rp) { | |
763 | i_am_rp_changed = true; | |
3d225d48 | 764 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 765 | char rp[PREFIX_STRLEN]; |
766 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
767 | rp, sizeof(rp)); | |
768 | if (rp_info->i_am_rp) { | |
769 | zlog_debug("%s: %s: i am rp", __func__, | |
770 | rp); | |
771 | } else { | |
772 | zlog_debug("%s: %s: i am no longer rp", | |
773 | __func__, rp); | |
774 | } | |
775 | } | |
776 | } | |
777 | } | |
778 | ||
779 | if (i_am_rp_changed) { | |
472ad383 | 780 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 781 | } |
54b97c74 DS |
782 | } |
783 | ||
784 | /* | |
785 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
786 | * this router is the RP for the group. | |
787 | * | |
788 | * Since we only have static RP, all groups are part of this RP | |
789 | */ | |
d9c9a9ee | 790 | int pim_rp_i_am_rp(struct pim_instance *pim, struct in_addr group) |
54b97c74 | 791 | { |
d62a17ae | 792 | struct prefix g; |
793 | struct rp_info *rp_info; | |
36d6bd7d | 794 | |
d62a17ae | 795 | memset(&g, 0, sizeof(g)); |
796 | g.family = AF_INET; | |
797 | g.prefixlen = 32; | |
798 | g.u.prefix4 = group; | |
36d6bd7d | 799 | |
d9c9a9ee | 800 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 801 | |
d62a17ae | 802 | if (rp_info) |
803 | return rp_info->i_am_rp; | |
36d6bd7d | 804 | |
d62a17ae | 805 | return 0; |
54b97c74 DS |
806 | } |
807 | ||
71694057 DS |
808 | /* |
809 | * RP(G) | |
810 | * | |
811 | * Return the RP that the Group belongs too. | |
812 | */ | |
fec883d9 | 813 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, struct in_addr group) |
71694057 | 814 | { |
d62a17ae | 815 | struct prefix g; |
816 | struct rp_info *rp_info; | |
817 | ||
818 | memset(&g, 0, sizeof(g)); | |
819 | g.family = AF_INET; | |
820 | g.prefixlen = 32; | |
821 | g.u.prefix4 = group; | |
822 | ||
d9c9a9ee | 823 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 824 | |
825 | if (rp_info) { | |
826 | struct prefix nht_p; | |
827 | struct pim_nexthop_cache pnc; | |
828 | /* Register addr with Zebra NHT */ | |
829 | nht_p.family = AF_INET; | |
830 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
831 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 832 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 833 | char buf[PREFIX2STR_BUFFER]; |
834 | char buf1[PREFIX2STR_BUFFER]; | |
835 | prefix2str(&nht_p, buf, sizeof(buf)); | |
836 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
837 | zlog_debug( | |
838 | "%s: NHT Register RP addr %s grp %s with Zebra", | |
839 | __PRETTY_FUNCTION__, buf, buf1); | |
840 | } | |
841 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
842 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
843 | pim_ecmp_nexthop_search(pim, &pnc, | |
d62a17ae | 844 | &rp_info->rp.source_nexthop, |
845 | &nht_p, &rp_info->group, 1); | |
cb9c7c50 | 846 | else { |
3d225d48 | 847 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 848 | char buf[PREFIX2STR_BUFFER]; |
849 | char buf1[PREFIX2STR_BUFFER]; | |
850 | prefix2str(&nht_p, buf, sizeof(buf)); | |
851 | prefix2str(&g, buf1, sizeof(buf1)); | |
852 | zlog_debug( | |
853 | "%s: Nexthop cache not found for RP %s grp %s register with Zebra", | |
854 | __PRETTY_FUNCTION__, buf, buf1); | |
855 | } | |
bfc92019 | 856 | pim_rpf_set_refresh_time(pim); |
56cb79b6 A |
857 | (void)pim_ecmp_nexthop_lookup( |
858 | pim, &rp_info->rp.source_nexthop, &nht_p, | |
859 | &rp_info->group, 1); | |
d62a17ae | 860 | } |
861 | return (&rp_info->rp); | |
862 | } | |
863 | ||
864 | // About to Go Down | |
865 | return NULL; | |
71694057 DS |
866 | } |
867 | ||
8f5f5e91 DS |
868 | /* |
869 | * Set the upstream IP address we want to talk to based upon | |
870 | * the rp configured and the source address | |
871 | * | |
872 | * If we have don't have a RP configured and the source address is * | |
873 | * then return failure. | |
874 | * | |
875 | */ | |
d9c9a9ee DS |
876 | int pim_rp_set_upstream_addr(struct pim_instance *pim, struct in_addr *up, |
877 | struct in_addr source, struct in_addr group) | |
8f5f5e91 | 878 | { |
d62a17ae | 879 | struct rp_info *rp_info; |
880 | struct prefix g; | |
36d6bd7d | 881 | |
d62a17ae | 882 | memset(&g, 0, sizeof(g)); |
883 | g.family = AF_INET; | |
884 | g.prefixlen = 32; | |
885 | g.u.prefix4 = group; | |
36d6bd7d | 886 | |
d9c9a9ee | 887 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 888 | |
d62a17ae | 889 | if ((pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
890 | && (source.s_addr == INADDR_ANY)) { | |
3d225d48 | 891 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 892 | zlog_debug("%s: Received a (*,G) with no RP configured", |
893 | __PRETTY_FUNCTION__); | |
894 | return 0; | |
895 | } | |
8f5f5e91 | 896 | |
d62a17ae | 897 | *up = (source.s_addr == INADDR_ANY) ? rp_info->rp.rpf_addr.u.prefix4 |
898 | : source; | |
8f5f5e91 | 899 | |
d62a17ae | 900 | return 1; |
8f5f5e91 | 901 | } |
75a26779 | 902 | |
0c8b717e DS |
903 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
904 | const char *spaces) | |
75a26779 | 905 | { |
d62a17ae | 906 | struct listnode *node; |
907 | struct rp_info *rp_info; | |
908 | char rp_buffer[32]; | |
909 | char group_buffer[32]; | |
910 | int count = 0; | |
911 | ||
d9c9a9ee | 912 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 913 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
914 | continue; | |
915 | ||
916 | if (rp_info->plist) | |
0c8b717e | 917 | vty_out(vty, "%sip pim rp %s prefix-list %s\n", spaces, |
d62a17ae | 918 | inet_ntop(AF_INET, |
919 | &rp_info->rp.rpf_addr.u.prefix4, | |
920 | rp_buffer, 32), | |
921 | rp_info->plist); | |
922 | else | |
0c8b717e | 923 | vty_out(vty, "%sip pim rp %s %s\n", spaces, |
d62a17ae | 924 | inet_ntop(AF_INET, |
925 | &rp_info->rp.rpf_addr.u.prefix4, | |
926 | rp_buffer, 32), | |
927 | prefix2str(&rp_info->group, group_buffer, 32)); | |
928 | count++; | |
929 | } | |
930 | ||
931 | return count; | |
75a26779 DS |
932 | } |
933 | ||
fec883d9 DS |
934 | int pim_rp_check_is_my_ip_address(struct pim_instance *pim, |
935 | struct in_addr group, | |
d62a17ae | 936 | struct in_addr dest_addr) |
75a26779 | 937 | { |
d62a17ae | 938 | struct rp_info *rp_info; |
939 | struct prefix g; | |
940 | ||
941 | memset(&g, 0, sizeof(g)); | |
942 | g.family = AF_INET; | |
943 | g.prefixlen = 32; | |
944 | g.u.prefix4 = group; | |
945 | ||
d9c9a9ee | 946 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 947 | /* |
948 | * See if we can short-cut some? | |
949 | * This might not make sense if we ever leave a static RP | |
950 | * type of configuration. | |
951 | * Note - Premature optimization might bite our patooeys' here. | |
952 | */ | |
d9c9a9ee | 953 | if (I_am_RP(pim, group)) { |
d62a17ae | 954 | if (dest_addr.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr) |
955 | return 1; | |
956 | } | |
957 | ||
fec883d9 | 958 | if (if_lookup_exact_address(&dest_addr, AF_INET, pim->vrf_id)) |
d62a17ae | 959 | return 1; |
960 | ||
961 | return 0; | |
75a26779 | 962 | } |
00d07c6f | 963 | |
088f1098 | 964 | void pim_rp_show_information(struct pim_instance *pim, struct vty *vty, bool uj) |
00d07c6f | 965 | { |
d62a17ae | 966 | struct rp_info *rp_info; |
967 | struct rp_info *prev_rp_info = NULL; | |
968 | struct listnode *node; | |
969 | ||
970 | json_object *json = NULL; | |
971 | json_object *json_rp_rows = NULL; | |
972 | json_object *json_row = NULL; | |
973 | ||
974 | if (uj) | |
975 | json = json_object_new_object(); | |
976 | else | |
977 | vty_out(vty, | |
978 | "RP address group/prefix-list OIF I am RP\n"); | |
979 | ||
d9c9a9ee | 980 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 981 | if (!pim_rpf_addr_is_inaddr_none(&rp_info->rp)) { |
982 | char buf[48]; | |
983 | ||
984 | if (uj) { | |
985 | /* | |
986 | * If we have moved on to a new RP then add the | |
987 | * entry for the previous RP | |
988 | */ | |
989 | if (prev_rp_info | |
990 | && prev_rp_info->rp.rpf_addr.u.prefix4 | |
991 | .s_addr | |
992 | != rp_info->rp.rpf_addr.u.prefix4 | |
993 | .s_addr) { | |
994 | json_object_object_add( | |
995 | json, | |
996 | inet_ntoa(prev_rp_info->rp | |
997 | .rpf_addr.u | |
998 | .prefix4), | |
999 | json_rp_rows); | |
1000 | json_rp_rows = NULL; | |
1001 | } | |
1002 | ||
1003 | if (!json_rp_rows) | |
1004 | json_rp_rows = json_object_new_array(); | |
1005 | ||
1006 | json_row = json_object_new_object(); | |
1007 | if (rp_info->rp.source_nexthop.interface) | |
1008 | json_object_string_add( | |
1009 | json_row, "outboundInterface", | |
1010 | rp_info->rp.source_nexthop | |
1011 | .interface->name); | |
1012 | ||
1013 | if (rp_info->i_am_rp) | |
1014 | json_object_boolean_true_add(json_row, | |
1015 | "iAmRP"); | |
1016 | ||
1017 | if (rp_info->plist) | |
1018 | json_object_string_add(json_row, | |
1019 | "prefixList", | |
1020 | rp_info->plist); | |
1021 | else | |
1022 | json_object_string_add( | |
1023 | json_row, "group", | |
1024 | prefix2str(&rp_info->group, buf, | |
1025 | 48)); | |
1026 | ||
1027 | json_object_array_add(json_rp_rows, json_row); | |
1028 | } else { | |
1029 | vty_out(vty, "%-15s ", | |
1030 | inet_ntoa(rp_info->rp.rpf_addr.u | |
1031 | .prefix4)); | |
1032 | ||
1033 | if (rp_info->plist) | |
1034 | vty_out(vty, "%-18s ", rp_info->plist); | |
1035 | else | |
1036 | vty_out(vty, "%-18s ", | |
1037 | prefix2str(&rp_info->group, buf, | |
1038 | 48)); | |
1039 | ||
1040 | if (rp_info->rp.source_nexthop.interface) | |
1041 | vty_out(vty, "%-10s ", | |
1042 | rp_info->rp.source_nexthop | |
1043 | .interface->name); | |
1044 | else | |
1045 | vty_out(vty, "%-10s ", "(Unknown)"); | |
1046 | ||
1047 | if (rp_info->i_am_rp) | |
1048 | vty_out(vty, "yes\n"); | |
1049 | else | |
1050 | vty_out(vty, "no\n"); | |
1051 | } | |
1052 | ||
1053 | prev_rp_info = rp_info; | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | if (uj) { | |
1058 | if (prev_rp_info && json_rp_rows) | |
1059 | json_object_object_add( | |
1060 | json, | |
1061 | inet_ntoa(prev_rp_info->rp.rpf_addr.u.prefix4), | |
1062 | json_rp_rows); | |
1063 | ||
9d303b37 DL |
1064 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
1065 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 1066 | json_object_free(json); |
1067 | } | |
00d07c6f | 1068 | } |
cba44481 | 1069 | |
fec883d9 | 1070 | void pim_resolve_rp_nh(struct pim_instance *pim) |
cba44481 | 1071 | { |
d62a17ae | 1072 | struct listnode *node = NULL; |
1073 | struct rp_info *rp_info = NULL; | |
1074 | struct nexthop *nh_node = NULL; | |
1075 | struct prefix nht_p; | |
1076 | struct pim_nexthop_cache pnc; | |
1077 | struct pim_neighbor *nbr = NULL; | |
1078 | ||
d9c9a9ee | 1079 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 1080 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
1081 | continue; | |
1082 | ||
1083 | nht_p.family = AF_INET; | |
1084 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
1085 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
1086 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 | 1087 | if (!pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, |
25bdac42 | 1088 | &pnc)) |
cb9c7c50 DS |
1089 | continue; |
1090 | ||
1091 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
1092 | if (nh_node->gate.ipv4.s_addr != 0) | |
1093 | continue; | |
1094 | ||
1095 | struct interface *ifp1 = if_lookup_by_index( | |
fec883d9 | 1096 | nh_node->ifindex, pim->vrf_id); |
cb9c7c50 DS |
1097 | nbr = pim_neighbor_find_if(ifp1); |
1098 | if (!nbr) | |
1099 | continue; | |
1100 | ||
1101 | nh_node->gate.ipv4 = nbr->source_addr; | |
3d225d48 | 1102 | if (PIM_DEBUG_PIM_NHT_RP) { |
cb9c7c50 DS |
1103 | char str[PREFIX_STRLEN]; |
1104 | char str1[INET_ADDRSTRLEN]; | |
1105 | pim_inet4_dump("<nht_nbr?>", nbr->source_addr, | |
1106 | str1, sizeof(str1)); | |
1107 | pim_addr_dump("<nht_addr?>", &nht_p, str, | |
1108 | sizeof(str)); | |
1109 | zlog_debug( | |
1110 | "%s: addr %s new nexthop addr %s interface %s", | |
1111 | __PRETTY_FUNCTION__, str, str1, | |
1112 | ifp1->name); | |
d62a17ae | 1113 | } |
1114 | } | |
1115 | } | |
cba44481 | 1116 | } |