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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; | |
348 | struct pim_nexthop_cache pnc; | |
89b68082 | 349 | struct route_node *rn; |
d62a17ae | 350 | |
351 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); | |
d62a17ae | 352 | |
353 | if (group_range == NULL) | |
354 | result = str2prefix("224.0.0.0/4", &rp_info->group); | |
355 | else | |
356 | result = str2prefix(group_range, &rp_info->group); | |
357 | ||
358 | if (!result) { | |
359 | XFREE(MTYPE_PIM_RP, rp_info); | |
360 | return PIM_GROUP_BAD_ADDRESS; | |
361 | } | |
362 | ||
363 | rp_info->rp.rpf_addr.family = AF_INET; | |
364 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
365 | result = inet_pton(rp_info->rp.rpf_addr.family, rp, | |
366 | &rp_info->rp.rpf_addr.u.prefix4); | |
367 | ||
368 | if (result <= 0) { | |
369 | XFREE(MTYPE_PIM_RP, rp_info); | |
370 | return PIM_RP_BAD_ADDRESS; | |
371 | } | |
372 | ||
373 | if (plist) { | |
374 | /* | |
375 | * Return if the prefix-list is already configured for this RP | |
376 | */ | |
d9c9a9ee | 377 | if (pim_rp_find_prefix_list(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 378 | plist)) { |
379 | XFREE(MTYPE_PIM_RP, rp_info); | |
380 | return PIM_SUCCESS; | |
381 | } | |
382 | ||
383 | /* | |
384 | * Barf if the prefix-list is already configured for an RP | |
385 | */ | |
d9c9a9ee | 386 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 387 | XFREE(MTYPE_PIM_RP, rp_info); |
388 | return PIM_RP_PFXLIST_IN_USE; | |
389 | } | |
390 | ||
391 | /* | |
392 | * Free any existing rp_info entries for this RP | |
393 | */ | |
d9c9a9ee | 394 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 395 | tmp_rp_info)) { |
396 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr | |
397 | == tmp_rp_info->rp.rpf_addr.u.prefix4.s_addr) { | |
398 | if (tmp_rp_info->plist) | |
fec883d9 | 399 | pim_rp_del(pim, rp, NULL, |
d62a17ae | 400 | tmp_rp_info->plist); |
401 | else | |
402 | pim_rp_del( | |
fec883d9 | 403 | pim, rp, |
d62a17ae | 404 | prefix2str(&tmp_rp_info->group, |
405 | buffer, BUFSIZ), | |
406 | NULL); | |
407 | } | |
408 | } | |
409 | ||
410 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
411 | } else { | |
89b68082 | 412 | |
2e8345c1 DS |
413 | if (!str2prefix("224.0.0.0/4", &group_all)) { |
414 | XFREE(MTYPE_PIM_RP, rp_info); | |
415 | return PIM_GROUP_BAD_ADDRESS; | |
416 | } | |
d9c9a9ee | 417 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 418 | |
419 | /* | |
420 | * Barf if group is a non-multicast subnet | |
421 | */ | |
422 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
423 | XFREE(MTYPE_PIM_RP, rp_info); | |
424 | return PIM_GROUP_BAD_ADDRESS; | |
425 | } | |
426 | ||
427 | /* | |
428 | * Remove any prefix-list rp_info entries for this RP | |
429 | */ | |
d9c9a9ee | 430 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 431 | tmp_rp_info)) { |
432 | if (tmp_rp_info->plist | |
433 | && rp_info->rp.rpf_addr.u.prefix4.s_addr | |
434 | == tmp_rp_info->rp.rpf_addr.u.prefix4 | |
435 | .s_addr) { | |
fec883d9 | 436 | pim_rp_del(pim, rp, NULL, tmp_rp_info->plist); |
d62a17ae | 437 | } |
438 | } | |
439 | ||
440 | /* | |
441 | * Take over the 224.0.0.0/4 group if the rp is INADDR_NONE | |
442 | */ | |
443 | if (prefix_same(&rp_all->group, &rp_info->group) | |
444 | && pim_rpf_addr_is_inaddr_none(&rp_all->rp)) { | |
445 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; | |
446 | XFREE(MTYPE_PIM_RP, rp_info); | |
447 | ||
448 | /* Register addr with Zebra NHT */ | |
449 | nht_p.family = AF_INET; | |
450 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
451 | nht_p.u.prefix4 = | |
452 | rp_all->rp.rpf_addr.u.prefix4; // RP address | |
3d225d48 | 453 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 454 | char buf[PREFIX2STR_BUFFER]; |
455 | char buf1[PREFIX2STR_BUFFER]; | |
456 | prefix2str(&nht_p, buf, sizeof(buf)); | |
457 | prefix2str(&rp_all->group, buf1, sizeof(buf1)); | |
458 | zlog_debug( | |
459 | "%s: NHT Register rp_all addr %s grp %s ", | |
460 | __PRETTY_FUNCTION__, buf, buf1); | |
461 | } | |
462 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
463 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_all, |
464 | &pnc)) { | |
cb9c7c50 | 465 | if (!pim_ecmp_nexthop_search( |
fec883d9 | 466 | pim, &pnc, |
25b787a2 DS |
467 | &rp_all->rp.source_nexthop, &nht_p, |
468 | &rp_all->group, 1)) | |
d62a17ae | 469 | return PIM_RP_NO_PATH; |
470 | } else { | |
53bc94b0 | 471 | if (!pim_ecmp_nexthop_lookup( |
d9c9a9ee | 472 | pim, &rp_all->rp.source_nexthop, |
53bc94b0 | 473 | &nht_p, &rp_all->group, 1)) |
d62a17ae | 474 | return PIM_RP_NO_PATH; |
475 | } | |
fec883d9 | 476 | pim_rp_check_interfaces(pim, rp_all); |
472ad383 | 477 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 478 | return PIM_SUCCESS; |
479 | } | |
480 | ||
481 | /* | |
482 | * Return if the group is already configured for this RP | |
483 | */ | |
d9c9a9ee | 484 | if (pim_rp_find_exact(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 485 | &rp_info->group)) { |
486 | XFREE(MTYPE_PIM_RP, rp_info); | |
487 | return PIM_SUCCESS; | |
488 | } | |
489 | ||
490 | /* | |
491 | * Barf if this group is already covered by some other RP | |
492 | */ | |
d9c9a9ee | 493 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 494 | |
495 | if (tmp_rp_info) { | |
496 | if (tmp_rp_info->plist) { | |
497 | XFREE(MTYPE_PIM_RP, rp_info); | |
498 | return PIM_GROUP_PFXLIST_OVERLAP; | |
499 | } else { | |
500 | /* | |
501 | * If the only RP that covers this group is an | |
502 | * RP configured for | |
503 | * 224.0.0.0/4 that is fine, ignore that one. | |
504 | * For all others | |
505 | * though we must return PIM_GROUP_OVERLAP | |
506 | */ | |
89b68082 DS |
507 | if (prefix_same(&rp_info->group, |
508 | &tmp_rp_info->group)) { | |
d62a17ae | 509 | XFREE(MTYPE_PIM_RP, rp_info); |
510 | return PIM_GROUP_OVERLAP; | |
511 | } | |
512 | } | |
513 | } | |
514 | } | |
515 | ||
d9c9a9ee | 516 | listnode_add_sort(pim->rp_list, rp_info); |
89b68082 | 517 | rn = route_node_get(pim->rp_table, &rp_info->group); |
89b68082 DS |
518 | rn->info = rp_info; |
519 | ||
520 | if (PIM_DEBUG_TRACE) { | |
521 | char buf[PREFIX_STRLEN]; | |
522 | ||
996c9314 LB |
523 | zlog_debug("Allocated: %p for rp_info: %p(%s) Lock: %d", rn, |
524 | rp_info, | |
89b68082 DS |
525 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
526 | rn->lock); | |
527 | } | |
d62a17ae | 528 | |
529 | /* Register addr with Zebra NHT */ | |
530 | nht_p.family = AF_INET; | |
531 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
532 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 533 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 534 | char buf[PREFIX2STR_BUFFER]; |
535 | char buf1[PREFIX2STR_BUFFER]; | |
536 | prefix2str(&nht_p, buf, sizeof(buf)); | |
537 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
538 | zlog_debug("%s: NHT Register RP addr %s grp %s with Zebra ", | |
539 | __PRETTY_FUNCTION__, buf, buf1); | |
540 | } | |
541 | ||
542 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
543 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) { |
544 | if (!pim_ecmp_nexthop_search(pim, &pnc, | |
25b787a2 | 545 | &rp_info->rp.source_nexthop, |
cb9c7c50 | 546 | &nht_p, &rp_info->group, 1)) |
d62a17ae | 547 | return PIM_RP_NO_PATH; |
548 | } else { | |
53bc94b0 DS |
549 | if (!pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
550 | &nht_p, &rp_info->group, 1)) | |
d62a17ae | 551 | return PIM_RP_NO_PATH; |
552 | } | |
553 | ||
fec883d9 | 554 | pim_rp_check_interfaces(pim, rp_info); |
472ad383 | 555 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 556 | return PIM_SUCCESS; |
75a26779 DS |
557 | } |
558 | ||
fec883d9 DS |
559 | int pim_rp_del(struct pim_instance *pim, const char *rp, |
560 | const char *group_range, const char *plist) | |
75a26779 | 561 | { |
d62a17ae | 562 | struct prefix group; |
563 | struct in_addr rp_addr; | |
564 | struct prefix g_all; | |
565 | struct rp_info *rp_info; | |
566 | struct rp_info *rp_all; | |
567 | int result; | |
568 | struct prefix nht_p; | |
89b68082 DS |
569 | struct route_node *rn; |
570 | bool was_plist = false; | |
d62a17ae | 571 | |
572 | if (group_range == NULL) | |
573 | result = str2prefix("224.0.0.0/4", &group); | |
574 | else | |
575 | result = str2prefix(group_range, &group); | |
576 | ||
577 | if (!result) | |
578 | return PIM_GROUP_BAD_ADDRESS; | |
579 | ||
580 | result = inet_pton(AF_INET, rp, &rp_addr); | |
581 | if (result <= 0) | |
582 | return PIM_RP_BAD_ADDRESS; | |
583 | ||
584 | if (plist) | |
d9c9a9ee | 585 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 586 | else |
d9c9a9ee | 587 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 588 | |
589 | if (!rp_info) | |
590 | return PIM_RP_NOT_FOUND; | |
591 | ||
592 | if (rp_info->plist) { | |
593 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
89b68082 | 594 | was_plist = true; |
d62a17ae | 595 | } |
596 | ||
597 | /* Deregister addr with Zebra NHT */ | |
598 | nht_p.family = AF_INET; | |
599 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
600 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 601 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 602 | char buf[PREFIX2STR_BUFFER]; |
603 | prefix2str(&nht_p, buf, sizeof(buf)); | |
604 | zlog_debug("%s: Deregister RP addr %s with Zebra ", | |
605 | __PRETTY_FUNCTION__, buf); | |
606 | } | |
fec883d9 | 607 | pim_delete_tracked_nexthop(pim, &nht_p, NULL, rp_info); |
d62a17ae | 608 | |
e691f179 DS |
609 | if (!str2prefix("224.0.0.0/4", &g_all)) |
610 | return PIM_RP_BAD_ADDRESS; | |
611 | ||
d9c9a9ee | 612 | rp_all = pim_rp_find_match_group(pim, &g_all); |
d62a17ae | 613 | |
614 | if (rp_all == rp_info) { | |
615 | rp_all->rp.rpf_addr.family = AF_INET; | |
616 | rp_all->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
617 | rp_all->i_am_rp = 0; | |
618 | return PIM_SUCCESS; | |
619 | } | |
620 | ||
d9c9a9ee | 621 | listnode_delete(pim->rp_list, rp_info); |
89b68082 DS |
622 | |
623 | if (!was_plist) { | |
624 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
625 | if (rn) { | |
626 | if (rn->info != rp_info) | |
af4c2728 | 627 | flog_err( |
450971aa | 628 | EC_LIB_DEVELOPMENT, |
3613d898 | 629 | "Expected rn->info to be equal to rp_info"); |
89b68082 DS |
630 | |
631 | if (PIM_DEBUG_TRACE) { | |
632 | char buf[PREFIX_STRLEN]; | |
633 | ||
996c9314 LB |
634 | zlog_debug( |
635 | "%s:Found for Freeing: %p for rp_info: %p(%s) Lock: %d", | |
636 | __PRETTY_FUNCTION__, rn, rp_info, | |
637 | prefix2str(&rp_info->group, buf, | |
638 | sizeof(buf)), | |
639 | rn->lock); | |
89b68082 DS |
640 | } |
641 | rn->info = NULL; | |
642 | route_unlock_node(rn); | |
643 | route_unlock_node(rn); | |
644 | } | |
645 | } | |
646 | ||
472ad383 | 647 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f DS |
648 | |
649 | XFREE(MTYPE_PIM_RP, rp_info); | |
d62a17ae | 650 | return PIM_SUCCESS; |
75a26779 | 651 | } |
13afbd05 | 652 | |
fec883d9 | 653 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 654 | { |
d62a17ae | 655 | struct listnode *node; |
656 | struct rp_info *rp_info; | |
d62a17ae | 657 | struct prefix nht_p; |
658 | struct pim_nexthop_cache pnc; | |
659 | ||
d9c9a9ee | 660 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 661 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
662 | continue; | |
663 | ||
664 | nht_p.family = AF_INET; | |
665 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
666 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
667 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
668 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
669 | pim_ecmp_nexthop_search(pim, &pnc, | |
cb9c7c50 DS |
670 | &rp_info->rp.source_nexthop, |
671 | &nht_p, &rp_info->group, 1); | |
672 | else { | |
3d225d48 | 673 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 674 | char buf[PREFIX2STR_BUFFER]; |
675 | prefix2str(&nht_p, buf, sizeof(buf)); | |
676 | zlog_debug( | |
677 | "%s: NHT Local Nexthop not found for RP %s ", | |
678 | __PRETTY_FUNCTION__, buf); | |
679 | } | |
ff5d90c2 DS |
680 | if (!pim_ecmp_nexthop_lookup(pim, |
681 | &rp_info->rp.source_nexthop, | |
682 | &nht_p, &rp_info->group, 1)) | |
3d225d48 | 683 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 684 | zlog_debug( |
685 | "Unable to lookup nexthop for rp specified"); | |
d62a17ae | 686 | } |
687 | } | |
13afbd05 DS |
688 | } |
689 | ||
54b97c74 | 690 | /* |
7176984f | 691 | * Checks to see if we should elect ourself the actual RP when new if |
692 | * addresses are added against an interface. | |
54b97c74 | 693 | */ |
d62a17ae | 694 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 695 | { |
d62a17ae | 696 | struct listnode *node; |
697 | struct rp_info *rp_info; | |
698 | bool i_am_rp_changed = false; | |
d9c9a9ee | 699 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 700 | |
d9c9a9ee | 701 | if (pim->rp_list == NULL) |
d62a17ae | 702 | return; |
703 | ||
d9c9a9ee | 704 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 705 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
706 | continue; | |
707 | ||
708 | /* if i_am_rp is already set nothing to be done (adding new | |
709 | * addresses | |
710 | * is not going to make a difference). */ | |
711 | if (rp_info->i_am_rp) { | |
712 | continue; | |
713 | } | |
714 | ||
715 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
716 | i_am_rp_changed = true; | |
717 | rp_info->i_am_rp = 1; | |
3d225d48 | 718 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 719 | char rp[PREFIX_STRLEN]; |
720 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
721 | rp, sizeof(rp)); | |
722 | zlog_debug("%s: %s: i am rp", __func__, rp); | |
723 | } | |
724 | } | |
725 | } | |
726 | ||
727 | if (i_am_rp_changed) { | |
472ad383 | 728 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 729 | } |
7176984f | 730 | } |
36d6bd7d | 731 | |
7176984f | 732 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
733 | * are removed. Removing numbers is an uncommon event in an active network | |
734 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 735 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 736 | { |
d62a17ae | 737 | struct listnode *node; |
738 | struct rp_info *rp_info; | |
739 | bool i_am_rp_changed = false; | |
740 | int old_i_am_rp; | |
741 | ||
d9c9a9ee | 742 | if (pim->rp_list == NULL) |
d62a17ae | 743 | return; |
744 | ||
d9c9a9ee | 745 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 746 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
747 | continue; | |
748 | ||
749 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 750 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 751 | |
752 | if (old_i_am_rp != rp_info->i_am_rp) { | |
753 | i_am_rp_changed = true; | |
3d225d48 | 754 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 755 | char rp[PREFIX_STRLEN]; |
756 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
757 | rp, sizeof(rp)); | |
758 | if (rp_info->i_am_rp) { | |
759 | zlog_debug("%s: %s: i am rp", __func__, | |
760 | rp); | |
761 | } else { | |
762 | zlog_debug("%s: %s: i am no longer rp", | |
763 | __func__, rp); | |
764 | } | |
765 | } | |
766 | } | |
767 | } | |
768 | ||
769 | if (i_am_rp_changed) { | |
472ad383 | 770 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 771 | } |
54b97c74 DS |
772 | } |
773 | ||
774 | /* | |
775 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
776 | * this router is the RP for the group. | |
777 | * | |
778 | * Since we only have static RP, all groups are part of this RP | |
779 | */ | |
d9c9a9ee | 780 | int pim_rp_i_am_rp(struct pim_instance *pim, struct in_addr group) |
54b97c74 | 781 | { |
d62a17ae | 782 | struct prefix g; |
783 | struct rp_info *rp_info; | |
36d6bd7d | 784 | |
d62a17ae | 785 | memset(&g, 0, sizeof(g)); |
786 | g.family = AF_INET; | |
787 | g.prefixlen = 32; | |
788 | g.u.prefix4 = group; | |
36d6bd7d | 789 | |
d9c9a9ee | 790 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 791 | |
d62a17ae | 792 | if (rp_info) |
793 | return rp_info->i_am_rp; | |
36d6bd7d | 794 | |
d62a17ae | 795 | return 0; |
54b97c74 DS |
796 | } |
797 | ||
71694057 DS |
798 | /* |
799 | * RP(G) | |
800 | * | |
801 | * Return the RP that the Group belongs too. | |
802 | */ | |
fec883d9 | 803 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, struct in_addr group) |
71694057 | 804 | { |
d62a17ae | 805 | struct prefix g; |
806 | struct rp_info *rp_info; | |
807 | ||
808 | memset(&g, 0, sizeof(g)); | |
809 | g.family = AF_INET; | |
810 | g.prefixlen = 32; | |
811 | g.u.prefix4 = group; | |
812 | ||
d9c9a9ee | 813 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 814 | |
815 | if (rp_info) { | |
816 | struct prefix nht_p; | |
817 | struct pim_nexthop_cache pnc; | |
818 | /* Register addr with Zebra NHT */ | |
819 | nht_p.family = AF_INET; | |
820 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
821 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 822 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 823 | char buf[PREFIX2STR_BUFFER]; |
824 | char buf1[PREFIX2STR_BUFFER]; | |
825 | prefix2str(&nht_p, buf, sizeof(buf)); | |
826 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
827 | zlog_debug( | |
828 | "%s: NHT Register RP addr %s grp %s with Zebra", | |
829 | __PRETTY_FUNCTION__, buf, buf1); | |
830 | } | |
831 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
832 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
833 | pim_ecmp_nexthop_search(pim, &pnc, | |
d62a17ae | 834 | &rp_info->rp.source_nexthop, |
835 | &nht_p, &rp_info->group, 1); | |
cb9c7c50 | 836 | else { |
3d225d48 | 837 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 838 | char buf[PREFIX2STR_BUFFER]; |
839 | char buf1[PREFIX2STR_BUFFER]; | |
840 | prefix2str(&nht_p, buf, sizeof(buf)); | |
841 | prefix2str(&g, buf1, sizeof(buf1)); | |
842 | zlog_debug( | |
843 | "%s: Nexthop cache not found for RP %s grp %s register with Zebra", | |
844 | __PRETTY_FUNCTION__, buf, buf1); | |
845 | } | |
bfc92019 | 846 | pim_rpf_set_refresh_time(pim); |
56cb79b6 A |
847 | (void)pim_ecmp_nexthop_lookup( |
848 | pim, &rp_info->rp.source_nexthop, &nht_p, | |
849 | &rp_info->group, 1); | |
d62a17ae | 850 | } |
851 | return (&rp_info->rp); | |
852 | } | |
853 | ||
854 | // About to Go Down | |
855 | return NULL; | |
71694057 DS |
856 | } |
857 | ||
8f5f5e91 DS |
858 | /* |
859 | * Set the upstream IP address we want to talk to based upon | |
860 | * the rp configured and the source address | |
861 | * | |
862 | * If we have don't have a RP configured and the source address is * | |
863 | * then return failure. | |
864 | * | |
865 | */ | |
d9c9a9ee DS |
866 | int pim_rp_set_upstream_addr(struct pim_instance *pim, struct in_addr *up, |
867 | struct in_addr source, struct in_addr group) | |
8f5f5e91 | 868 | { |
d62a17ae | 869 | struct rp_info *rp_info; |
870 | struct prefix g; | |
36d6bd7d | 871 | |
d62a17ae | 872 | memset(&g, 0, sizeof(g)); |
873 | g.family = AF_INET; | |
874 | g.prefixlen = 32; | |
875 | g.u.prefix4 = group; | |
36d6bd7d | 876 | |
d9c9a9ee | 877 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 878 | |
d62a17ae | 879 | if ((pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
880 | && (source.s_addr == INADDR_ANY)) { | |
3d225d48 | 881 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 882 | zlog_debug("%s: Received a (*,G) with no RP configured", |
883 | __PRETTY_FUNCTION__); | |
884 | return 0; | |
885 | } | |
8f5f5e91 | 886 | |
d62a17ae | 887 | *up = (source.s_addr == INADDR_ANY) ? rp_info->rp.rpf_addr.u.prefix4 |
888 | : source; | |
8f5f5e91 | 889 | |
d62a17ae | 890 | return 1; |
8f5f5e91 | 891 | } |
75a26779 | 892 | |
0c8b717e DS |
893 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
894 | const char *spaces) | |
75a26779 | 895 | { |
d62a17ae | 896 | struct listnode *node; |
897 | struct rp_info *rp_info; | |
898 | char rp_buffer[32]; | |
899 | char group_buffer[32]; | |
900 | int count = 0; | |
901 | ||
d9c9a9ee | 902 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 903 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
904 | continue; | |
905 | ||
906 | if (rp_info->plist) | |
0c8b717e | 907 | vty_out(vty, "%sip pim rp %s prefix-list %s\n", spaces, |
d62a17ae | 908 | inet_ntop(AF_INET, |
909 | &rp_info->rp.rpf_addr.u.prefix4, | |
910 | rp_buffer, 32), | |
911 | rp_info->plist); | |
912 | else | |
0c8b717e | 913 | vty_out(vty, "%sip pim rp %s %s\n", spaces, |
d62a17ae | 914 | inet_ntop(AF_INET, |
915 | &rp_info->rp.rpf_addr.u.prefix4, | |
916 | rp_buffer, 32), | |
917 | prefix2str(&rp_info->group, group_buffer, 32)); | |
918 | count++; | |
919 | } | |
920 | ||
921 | return count; | |
75a26779 DS |
922 | } |
923 | ||
fec883d9 DS |
924 | int pim_rp_check_is_my_ip_address(struct pim_instance *pim, |
925 | struct in_addr group, | |
d62a17ae | 926 | struct in_addr dest_addr) |
75a26779 | 927 | { |
d62a17ae | 928 | struct rp_info *rp_info; |
929 | struct prefix g; | |
930 | ||
931 | memset(&g, 0, sizeof(g)); | |
932 | g.family = AF_INET; | |
933 | g.prefixlen = 32; | |
934 | g.u.prefix4 = group; | |
935 | ||
d9c9a9ee | 936 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 937 | /* |
938 | * See if we can short-cut some? | |
939 | * This might not make sense if we ever leave a static RP | |
940 | * type of configuration. | |
941 | * Note - Premature optimization might bite our patooeys' here. | |
942 | */ | |
d9c9a9ee | 943 | if (I_am_RP(pim, group)) { |
d62a17ae | 944 | if (dest_addr.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr) |
945 | return 1; | |
946 | } | |
947 | ||
fec883d9 | 948 | if (if_lookup_exact_address(&dest_addr, AF_INET, pim->vrf_id)) |
d62a17ae | 949 | return 1; |
950 | ||
951 | return 0; | |
75a26779 | 952 | } |
00d07c6f | 953 | |
088f1098 | 954 | void pim_rp_show_information(struct pim_instance *pim, struct vty *vty, bool uj) |
00d07c6f | 955 | { |
d62a17ae | 956 | struct rp_info *rp_info; |
957 | struct rp_info *prev_rp_info = NULL; | |
958 | struct listnode *node; | |
959 | ||
960 | json_object *json = NULL; | |
961 | json_object *json_rp_rows = NULL; | |
962 | json_object *json_row = NULL; | |
963 | ||
964 | if (uj) | |
965 | json = json_object_new_object(); | |
966 | else | |
967 | vty_out(vty, | |
968 | "RP address group/prefix-list OIF I am RP\n"); | |
969 | ||
d9c9a9ee | 970 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 971 | if (!pim_rpf_addr_is_inaddr_none(&rp_info->rp)) { |
972 | char buf[48]; | |
973 | ||
974 | if (uj) { | |
975 | /* | |
976 | * If we have moved on to a new RP then add the | |
977 | * entry for the previous RP | |
978 | */ | |
979 | if (prev_rp_info | |
980 | && prev_rp_info->rp.rpf_addr.u.prefix4 | |
981 | .s_addr | |
982 | != rp_info->rp.rpf_addr.u.prefix4 | |
983 | .s_addr) { | |
984 | json_object_object_add( | |
985 | json, | |
986 | inet_ntoa(prev_rp_info->rp | |
987 | .rpf_addr.u | |
988 | .prefix4), | |
989 | json_rp_rows); | |
990 | json_rp_rows = NULL; | |
991 | } | |
992 | ||
993 | if (!json_rp_rows) | |
994 | json_rp_rows = json_object_new_array(); | |
995 | ||
996 | json_row = json_object_new_object(); | |
997 | if (rp_info->rp.source_nexthop.interface) | |
998 | json_object_string_add( | |
999 | json_row, "outboundInterface", | |
1000 | rp_info->rp.source_nexthop | |
1001 | .interface->name); | |
1002 | ||
1003 | if (rp_info->i_am_rp) | |
1004 | json_object_boolean_true_add(json_row, | |
1005 | "iAmRP"); | |
1006 | ||
1007 | if (rp_info->plist) | |
1008 | json_object_string_add(json_row, | |
1009 | "prefixList", | |
1010 | rp_info->plist); | |
1011 | else | |
1012 | json_object_string_add( | |
1013 | json_row, "group", | |
1014 | prefix2str(&rp_info->group, buf, | |
1015 | 48)); | |
1016 | ||
1017 | json_object_array_add(json_rp_rows, json_row); | |
1018 | } else { | |
1019 | vty_out(vty, "%-15s ", | |
1020 | inet_ntoa(rp_info->rp.rpf_addr.u | |
1021 | .prefix4)); | |
1022 | ||
1023 | if (rp_info->plist) | |
1024 | vty_out(vty, "%-18s ", rp_info->plist); | |
1025 | else | |
1026 | vty_out(vty, "%-18s ", | |
1027 | prefix2str(&rp_info->group, buf, | |
1028 | 48)); | |
1029 | ||
1030 | if (rp_info->rp.source_nexthop.interface) | |
1031 | vty_out(vty, "%-10s ", | |
1032 | rp_info->rp.source_nexthop | |
1033 | .interface->name); | |
1034 | else | |
1035 | vty_out(vty, "%-10s ", "(Unknown)"); | |
1036 | ||
1037 | if (rp_info->i_am_rp) | |
1038 | vty_out(vty, "yes\n"); | |
1039 | else | |
1040 | vty_out(vty, "no\n"); | |
1041 | } | |
1042 | ||
1043 | prev_rp_info = rp_info; | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | if (uj) { | |
1048 | if (prev_rp_info && json_rp_rows) | |
1049 | json_object_object_add( | |
1050 | json, | |
1051 | inet_ntoa(prev_rp_info->rp.rpf_addr.u.prefix4), | |
1052 | json_rp_rows); | |
1053 | ||
9d303b37 DL |
1054 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
1055 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 1056 | json_object_free(json); |
1057 | } | |
00d07c6f | 1058 | } |
cba44481 | 1059 | |
fec883d9 | 1060 | void pim_resolve_rp_nh(struct pim_instance *pim) |
cba44481 | 1061 | { |
d62a17ae | 1062 | struct listnode *node = NULL; |
1063 | struct rp_info *rp_info = NULL; | |
1064 | struct nexthop *nh_node = NULL; | |
1065 | struct prefix nht_p; | |
1066 | struct pim_nexthop_cache pnc; | |
1067 | struct pim_neighbor *nbr = NULL; | |
1068 | ||
d9c9a9ee | 1069 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 1070 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
1071 | continue; | |
1072 | ||
1073 | nht_p.family = AF_INET; | |
1074 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
1075 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
1076 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 | 1077 | if (!pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, |
25bdac42 | 1078 | &pnc)) |
cb9c7c50 DS |
1079 | continue; |
1080 | ||
1081 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
1082 | if (nh_node->gate.ipv4.s_addr != 0) | |
1083 | continue; | |
1084 | ||
1085 | struct interface *ifp1 = if_lookup_by_index( | |
fec883d9 | 1086 | nh_node->ifindex, pim->vrf_id); |
cb9c7c50 DS |
1087 | nbr = pim_neighbor_find_if(ifp1); |
1088 | if (!nbr) | |
1089 | continue; | |
1090 | ||
1091 | nh_node->gate.ipv4 = nbr->source_addr; | |
3d225d48 | 1092 | if (PIM_DEBUG_PIM_NHT_RP) { |
cb9c7c50 DS |
1093 | char str[PREFIX_STRLEN]; |
1094 | char str1[INET_ADDRSTRLEN]; | |
1095 | pim_inet4_dump("<nht_nbr?>", nbr->source_addr, | |
1096 | str1, sizeof(str1)); | |
1097 | pim_addr_dump("<nht_addr?>", &nht_p, str, | |
1098 | sizeof(str)); | |
1099 | zlog_debug( | |
1100 | "%s: addr %s new nexthop addr %s interface %s", | |
1101 | __PRETTY_FUNCTION__, str, str1, | |
1102 | ifp1->name); | |
d62a17ae | 1103 | } |
1104 | } | |
1105 | } | |
cba44481 | 1106 | } |