]>
Commit | Line | Data |
---|---|---|
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 | |
affe9e99 | 55 | list_delete_and_null(&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; | |
6e1ef388 DS |
60 | |
61 | XFREE(MTYPE_PIM_NEXTHOP_CACHE, pnc); | |
c2cf4b02 DS |
62 | } |
63 | ||
d62a17ae | 64 | static void pim_rp_info_free(struct rp_info *rp_info) |
36d6bd7d | 65 | { |
ff823fc9 DS |
66 | if (rp_info->plist) |
67 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
68 | ||
d62a17ae | 69 | XFREE(MTYPE_PIM_RP, rp_info); |
36d6bd7d DS |
70 | } |
71 | ||
d62a17ae | 72 | int pim_rp_list_cmp(void *v1, void *v2) |
36d6bd7d | 73 | { |
d62a17ae | 74 | struct rp_info *rp1 = (struct rp_info *)v1; |
75 | struct rp_info *rp2 = (struct rp_info *)v2; | |
76 | ||
77 | /* | |
78 | * Sort by RP IP address | |
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 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
85 | > rp2->rp.rpf_addr.u.prefix4.s_addr) | |
86 | return 1; | |
87 | ||
88 | /* | |
89 | * Sort by group IP address | |
90 | */ | |
91 | if (rp1->group.u.prefix4.s_addr < rp2->group.u.prefix4.s_addr) | |
92 | return -1; | |
93 | ||
94 | if (rp1->group.u.prefix4.s_addr > rp2->group.u.prefix4.s_addr) | |
95 | return 1; | |
96 | ||
97 | return 0; | |
36d6bd7d DS |
98 | } |
99 | ||
d9c9a9ee | 100 | void pim_rp_init(struct pim_instance *pim) |
36d6bd7d | 101 | { |
d62a17ae | 102 | struct rp_info *rp_info; |
89b68082 | 103 | struct route_node *rn; |
36d6bd7d | 104 | |
d9c9a9ee DS |
105 | pim->rp_list = list_new(); |
106 | pim->rp_list->del = (void (*)(void *))pim_rp_info_free; | |
107 | pim->rp_list->cmp = pim_rp_list_cmp; | |
36d6bd7d | 108 | |
89b68082 | 109 | pim->rp_table = route_table_init(); |
89b68082 | 110 | |
d62a17ae | 111 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); |
36d6bd7d | 112 | |
2e8345c1 | 113 | if (!str2prefix("224.0.0.0/4", &rp_info->group)) { |
af4c2728 | 114 | flog_err(LIB_ERR_DEVELOPMENT, |
d9ff4302 | 115 | "Unable to convert 224.0.0.0/4 to prefix"); |
affe9e99 | 116 | list_delete_and_null(&pim->rp_list); |
89b68082 | 117 | route_table_finish(pim->rp_table); |
2e8345c1 DS |
118 | XFREE(MTYPE_PIM_RP, rp_info); |
119 | return; | |
120 | } | |
d62a17ae | 121 | rp_info->group.family = AF_INET; |
122 | rp_info->rp.rpf_addr.family = AF_INET; | |
123 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
124 | rp_info->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
36d6bd7d | 125 | |
d9c9a9ee | 126 | listnode_add(pim->rp_list, rp_info); |
89b68082 DS |
127 | |
128 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
89b68082 DS |
129 | rn->info = rp_info; |
130 | if (PIM_DEBUG_TRACE) | |
996c9314 LB |
131 | zlog_debug( |
132 | "Allocated: %p for rp_info: %p(224.0.0.0/4) Lock: %d", | |
133 | rn, rp_info, rn->lock); | |
36d6bd7d DS |
134 | } |
135 | ||
d9c9a9ee | 136 | void pim_rp_free(struct pim_instance *pim) |
36d6bd7d | 137 | { |
d9c9a9ee | 138 | if (pim->rp_list) |
affe9e99 | 139 | list_delete_and_null(&pim->rp_list); |
36d6bd7d DS |
140 | } |
141 | ||
dfe43e25 DW |
142 | /* |
143 | * Given an RP's prefix-list, return the RP's rp_info for that prefix-list | |
144 | */ | |
d9c9a9ee DS |
145 | static struct rp_info *pim_rp_find_prefix_list(struct pim_instance *pim, |
146 | struct in_addr rp, | |
d62a17ae | 147 | const char *plist) |
36d6bd7d | 148 | { |
d62a17ae | 149 | struct listnode *node; |
150 | struct rp_info *rp_info; | |
151 | ||
d9c9a9ee | 152 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 153 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
154 | && rp_info->plist && strcmp(rp_info->plist, plist) == 0) { | |
155 | return rp_info; | |
156 | } | |
157 | } | |
158 | ||
159 | return NULL; | |
36d6bd7d DS |
160 | } |
161 | ||
dfe43e25 DW |
162 | /* |
163 | * Return true if plist is used by any rp_info | |
164 | */ | |
d9c9a9ee | 165 | static int pim_rp_prefix_list_used(struct pim_instance *pim, const char *plist) |
dfe43e25 | 166 | { |
d62a17ae | 167 | struct listnode *node; |
168 | struct rp_info *rp_info; | |
169 | ||
d9c9a9ee | 170 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 171 | if (rp_info->plist && strcmp(rp_info->plist, plist) == 0) { |
172 | return 1; | |
173 | } | |
174 | } | |
175 | ||
176 | return 0; | |
dfe43e25 DW |
177 | } |
178 | ||
179 | /* | |
d62a17ae | 180 | * Given an RP's address, return the RP's rp_info that is an exact match for |
181 | * 'group' | |
dfe43e25 | 182 | */ |
d9c9a9ee DS |
183 | static struct rp_info *pim_rp_find_exact(struct pim_instance *pim, |
184 | struct in_addr rp, | |
123214ef | 185 | const struct prefix *group) |
36d6bd7d | 186 | { |
d62a17ae | 187 | struct listnode *node; |
188 | struct rp_info *rp_info; | |
36d6bd7d | 189 | |
d9c9a9ee | 190 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 191 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
192 | && prefix_same(&rp_info->group, group)) | |
193 | return rp_info; | |
194 | } | |
54b97c74 | 195 | |
d62a17ae | 196 | return NULL; |
36d6bd7d DS |
197 | } |
198 | ||
dfe43e25 DW |
199 | /* |
200 | * Given a group, return the rp_info for that group | |
201 | */ | |
d9c9a9ee | 202 | static struct rp_info *pim_rp_find_match_group(struct pim_instance *pim, |
123214ef | 203 | const struct prefix *group) |
36d6bd7d | 204 | { |
d62a17ae | 205 | struct listnode *node; |
b77b1550 | 206 | struct rp_info *best = NULL; |
d62a17ae | 207 | struct rp_info *rp_info; |
208 | struct prefix_list *plist; | |
123214ef | 209 | const struct prefix *p, *bp; |
89b68082 | 210 | struct route_node *rn; |
d62a17ae | 211 | |
4646b86a | 212 | bp = NULL; |
d9c9a9ee | 213 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 214 | if (rp_info->plist) { |
215 | plist = prefix_list_lookup(AFI_IP, rp_info->plist); | |
216 | ||
996c9314 LB |
217 | if (prefix_list_apply_which_prefix(plist, &p, group) |
218 | == PREFIX_DENY) | |
b77b1550 DS |
219 | continue; |
220 | ||
221 | if (!best) { | |
222 | best = rp_info; | |
223 | bp = p; | |
224 | continue; | |
225 | } | |
226 | ||
4646b86a | 227 | if (bp && bp->prefixlen < p->prefixlen) { |
b77b1550 DS |
228 | best = rp_info; |
229 | bp = p; | |
230 | } | |
d62a17ae | 231 | } |
232 | } | |
233 | ||
89b68082 DS |
234 | rn = route_node_match(pim->rp_table, group); |
235 | if (!rn) { | |
af4c2728 | 236 | flog_err( |
3613d898 | 237 | LIB_ERR_DEVELOPMENT, |
996c9314 LB |
238 | "%s: BUG We should have found default group information\n", |
239 | __PRETTY_FUNCTION__); | |
89b68082 DS |
240 | return best; |
241 | } | |
242 | ||
243 | rp_info = rn->info; | |
244 | if (PIM_DEBUG_TRACE) { | |
245 | char buf[PREFIX_STRLEN]; | |
246 | ||
247 | route_unlock_node(rn); | |
996c9314 LB |
248 | zlog_debug("Lookedup: %p for rp_info: %p(%s) Lock: %d", rn, |
249 | rp_info, | |
89b68082 DS |
250 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
251 | rn->lock); | |
252 | } | |
253 | ||
254 | if (!best) | |
255 | return rp_info; | |
256 | ||
257 | if (rp_info->group.prefixlen < best->group.prefixlen) | |
258 | best = rp_info; | |
259 | ||
b77b1550 | 260 | return best; |
36d6bd7d | 261 | } |
75a26779 | 262 | |
dfe43e25 DW |
263 | /* |
264 | * When the user makes "ip pim rp" configuration changes or if they change the | |
265 | * prefix-list(s) used by these statements we must tickle the upstream state | |
266 | * for each group to make them re-lookup who their RP should be. | |
267 | * | |
268 | * This is a placeholder function for now. | |
269 | */ | |
472ad383 | 270 | static void pim_rp_refresh_group_to_rp_mapping(struct pim_instance *pim) |
dfe43e25 | 271 | { |
472ad383 | 272 | pim_msdp_i_am_rp_changed(pim); |
dfe43e25 DW |
273 | } |
274 | ||
d9c9a9ee DS |
275 | void pim_rp_prefix_list_update(struct pim_instance *pim, |
276 | struct prefix_list *plist) | |
dfe43e25 | 277 | { |
d62a17ae | 278 | struct listnode *node; |
279 | struct rp_info *rp_info; | |
280 | int refresh_needed = 0; | |
281 | ||
d9c9a9ee | 282 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 283 | if (rp_info->plist |
284 | && strcmp(rp_info->plist, prefix_list_name(plist)) == 0) { | |
285 | refresh_needed = 1; | |
286 | break; | |
287 | } | |
288 | } | |
289 | ||
290 | if (refresh_needed) | |
472ad383 | 291 | pim_rp_refresh_group_to_rp_mapping(pim); |
dfe43e25 DW |
292 | } |
293 | ||
d62a17ae | 294 | static int pim_rp_check_interface_addrs(struct rp_info *rp_info, |
295 | struct pim_interface *pim_ifp) | |
7176984f | 296 | { |
d62a17ae | 297 | struct listnode *node; |
298 | struct pim_secondary_addr *sec_addr; | |
7176984f | 299 | |
d62a17ae | 300 | if (pim_ifp->primary_address.s_addr |
301 | == rp_info->rp.rpf_addr.u.prefix4.s_addr) | |
302 | return 1; | |
7176984f | 303 | |
d62a17ae | 304 | if (!pim_ifp->sec_addr_list) { |
305 | return 0; | |
306 | } | |
7176984f | 307 | |
d62a17ae | 308 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
309 | if (prefix_same(&sec_addr->addr, &rp_info->rp.rpf_addr)) { | |
310 | return 1; | |
311 | } | |
312 | } | |
7176984f | 313 | |
d62a17ae | 314 | return 0; |
7176984f | 315 | } |
316 | ||
fec883d9 DS |
317 | static void pim_rp_check_interfaces(struct pim_instance *pim, |
318 | struct rp_info *rp_info) | |
00d07c6f | 319 | { |
d62a17ae | 320 | struct interface *ifp; |
00d07c6f | 321 | |
d62a17ae | 322 | rp_info->i_am_rp = 0; |
451fda4f | 323 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 324 | struct pim_interface *pim_ifp = ifp->info; |
00d07c6f | 325 | |
d62a17ae | 326 | if (!pim_ifp) |
327 | continue; | |
00d07c6f | 328 | |
d62a17ae | 329 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { |
330 | rp_info->i_am_rp = 1; | |
331 | } | |
332 | } | |
00d07c6f DS |
333 | } |
334 | ||
fec883d9 DS |
335 | int pim_rp_new(struct pim_instance *pim, const char *rp, |
336 | const char *group_range, const char *plist) | |
75a26779 | 337 | { |
d62a17ae | 338 | int result = 0; |
339 | struct rp_info *rp_info; | |
340 | struct rp_info *rp_all; | |
341 | struct prefix group_all; | |
342 | struct listnode *node, *nnode; | |
343 | struct rp_info *tmp_rp_info; | |
344 | char buffer[BUFSIZ]; | |
345 | struct prefix nht_p; | |
346 | struct pim_nexthop_cache pnc; | |
89b68082 | 347 | struct route_node *rn; |
d62a17ae | 348 | |
349 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); | |
d62a17ae | 350 | |
351 | if (group_range == NULL) | |
352 | result = str2prefix("224.0.0.0/4", &rp_info->group); | |
353 | else | |
354 | result = str2prefix(group_range, &rp_info->group); | |
355 | ||
356 | if (!result) { | |
357 | XFREE(MTYPE_PIM_RP, rp_info); | |
358 | return PIM_GROUP_BAD_ADDRESS; | |
359 | } | |
360 | ||
361 | rp_info->rp.rpf_addr.family = AF_INET; | |
362 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
363 | result = inet_pton(rp_info->rp.rpf_addr.family, rp, | |
364 | &rp_info->rp.rpf_addr.u.prefix4); | |
365 | ||
366 | if (result <= 0) { | |
367 | XFREE(MTYPE_PIM_RP, rp_info); | |
368 | return PIM_RP_BAD_ADDRESS; | |
369 | } | |
370 | ||
371 | if (plist) { | |
372 | /* | |
373 | * Return if the prefix-list is already configured for this RP | |
374 | */ | |
d9c9a9ee | 375 | if (pim_rp_find_prefix_list(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 376 | plist)) { |
377 | XFREE(MTYPE_PIM_RP, rp_info); | |
378 | return PIM_SUCCESS; | |
379 | } | |
380 | ||
381 | /* | |
382 | * Barf if the prefix-list is already configured for an RP | |
383 | */ | |
d9c9a9ee | 384 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 385 | XFREE(MTYPE_PIM_RP, rp_info); |
386 | return PIM_RP_PFXLIST_IN_USE; | |
387 | } | |
388 | ||
389 | /* | |
390 | * Free any existing rp_info entries for this RP | |
391 | */ | |
d9c9a9ee | 392 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 393 | tmp_rp_info)) { |
394 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr | |
395 | == tmp_rp_info->rp.rpf_addr.u.prefix4.s_addr) { | |
396 | if (tmp_rp_info->plist) | |
fec883d9 | 397 | pim_rp_del(pim, rp, NULL, |
d62a17ae | 398 | tmp_rp_info->plist); |
399 | else | |
400 | pim_rp_del( | |
fec883d9 | 401 | pim, rp, |
d62a17ae | 402 | prefix2str(&tmp_rp_info->group, |
403 | buffer, BUFSIZ), | |
404 | NULL); | |
405 | } | |
406 | } | |
407 | ||
408 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
409 | } else { | |
89b68082 | 410 | |
2e8345c1 DS |
411 | if (!str2prefix("224.0.0.0/4", &group_all)) { |
412 | XFREE(MTYPE_PIM_RP, rp_info); | |
413 | return PIM_GROUP_BAD_ADDRESS; | |
414 | } | |
d9c9a9ee | 415 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 416 | |
417 | /* | |
418 | * Barf if group is a non-multicast subnet | |
419 | */ | |
420 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
421 | XFREE(MTYPE_PIM_RP, rp_info); | |
422 | return PIM_GROUP_BAD_ADDRESS; | |
423 | } | |
424 | ||
425 | /* | |
426 | * Remove any prefix-list rp_info entries for this RP | |
427 | */ | |
d9c9a9ee | 428 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 429 | tmp_rp_info)) { |
430 | if (tmp_rp_info->plist | |
431 | && rp_info->rp.rpf_addr.u.prefix4.s_addr | |
432 | == tmp_rp_info->rp.rpf_addr.u.prefix4 | |
433 | .s_addr) { | |
fec883d9 | 434 | pim_rp_del(pim, rp, NULL, tmp_rp_info->plist); |
d62a17ae | 435 | } |
436 | } | |
437 | ||
438 | /* | |
439 | * Take over the 224.0.0.0/4 group if the rp is INADDR_NONE | |
440 | */ | |
441 | if (prefix_same(&rp_all->group, &rp_info->group) | |
442 | && pim_rpf_addr_is_inaddr_none(&rp_all->rp)) { | |
443 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; | |
444 | XFREE(MTYPE_PIM_RP, rp_info); | |
445 | ||
446 | /* Register addr with Zebra NHT */ | |
447 | nht_p.family = AF_INET; | |
448 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
449 | nht_p.u.prefix4 = | |
450 | rp_all->rp.rpf_addr.u.prefix4; // RP address | |
3d225d48 | 451 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 452 | char buf[PREFIX2STR_BUFFER]; |
453 | char buf1[PREFIX2STR_BUFFER]; | |
454 | prefix2str(&nht_p, buf, sizeof(buf)); | |
455 | prefix2str(&rp_all->group, buf1, sizeof(buf1)); | |
456 | zlog_debug( | |
457 | "%s: NHT Register rp_all addr %s grp %s ", | |
458 | __PRETTY_FUNCTION__, buf, buf1); | |
459 | } | |
460 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
461 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_all, |
462 | &pnc)) { | |
cb9c7c50 | 463 | if (!pim_ecmp_nexthop_search( |
fec883d9 | 464 | pim, &pnc, |
25b787a2 DS |
465 | &rp_all->rp.source_nexthop, &nht_p, |
466 | &rp_all->group, 1)) | |
d62a17ae | 467 | return PIM_RP_NO_PATH; |
468 | } else { | |
53bc94b0 | 469 | if (!pim_ecmp_nexthop_lookup( |
d9c9a9ee | 470 | pim, &rp_all->rp.source_nexthop, |
53bc94b0 | 471 | &nht_p, &rp_all->group, 1)) |
d62a17ae | 472 | return PIM_RP_NO_PATH; |
473 | } | |
fec883d9 | 474 | pim_rp_check_interfaces(pim, rp_all); |
472ad383 | 475 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 476 | return PIM_SUCCESS; |
477 | } | |
478 | ||
479 | /* | |
480 | * Return if the group is already configured for this RP | |
481 | */ | |
d9c9a9ee | 482 | if (pim_rp_find_exact(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 483 | &rp_info->group)) { |
484 | XFREE(MTYPE_PIM_RP, rp_info); | |
485 | return PIM_SUCCESS; | |
486 | } | |
487 | ||
488 | /* | |
489 | * Barf if this group is already covered by some other RP | |
490 | */ | |
d9c9a9ee | 491 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 492 | |
493 | if (tmp_rp_info) { | |
494 | if (tmp_rp_info->plist) { | |
495 | XFREE(MTYPE_PIM_RP, rp_info); | |
496 | return PIM_GROUP_PFXLIST_OVERLAP; | |
497 | } else { | |
498 | /* | |
499 | * If the only RP that covers this group is an | |
500 | * RP configured for | |
501 | * 224.0.0.0/4 that is fine, ignore that one. | |
502 | * For all others | |
503 | * though we must return PIM_GROUP_OVERLAP | |
504 | */ | |
89b68082 DS |
505 | if (prefix_same(&rp_info->group, |
506 | &tmp_rp_info->group)) { | |
d62a17ae | 507 | XFREE(MTYPE_PIM_RP, rp_info); |
508 | return PIM_GROUP_OVERLAP; | |
509 | } | |
510 | } | |
511 | } | |
512 | } | |
513 | ||
d9c9a9ee | 514 | listnode_add_sort(pim->rp_list, rp_info); |
89b68082 | 515 | rn = route_node_get(pim->rp_table, &rp_info->group); |
89b68082 DS |
516 | rn->info = rp_info; |
517 | ||
518 | if (PIM_DEBUG_TRACE) { | |
519 | char buf[PREFIX_STRLEN]; | |
520 | ||
996c9314 LB |
521 | zlog_debug("Allocated: %p for rp_info: %p(%s) Lock: %d", rn, |
522 | rp_info, | |
89b68082 DS |
523 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
524 | rn->lock); | |
525 | } | |
d62a17ae | 526 | |
527 | /* Register addr with Zebra NHT */ | |
528 | nht_p.family = AF_INET; | |
529 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
530 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 531 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 532 | char buf[PREFIX2STR_BUFFER]; |
533 | char buf1[PREFIX2STR_BUFFER]; | |
534 | prefix2str(&nht_p, buf, sizeof(buf)); | |
535 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
536 | zlog_debug("%s: NHT Register RP addr %s grp %s with Zebra ", | |
537 | __PRETTY_FUNCTION__, buf, buf1); | |
538 | } | |
539 | ||
540 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
541 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) { |
542 | if (!pim_ecmp_nexthop_search(pim, &pnc, | |
25b787a2 | 543 | &rp_info->rp.source_nexthop, |
cb9c7c50 | 544 | &nht_p, &rp_info->group, 1)) |
d62a17ae | 545 | return PIM_RP_NO_PATH; |
546 | } else { | |
53bc94b0 DS |
547 | if (!pim_ecmp_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
548 | &nht_p, &rp_info->group, 1)) | |
d62a17ae | 549 | return PIM_RP_NO_PATH; |
550 | } | |
551 | ||
fec883d9 | 552 | pim_rp_check_interfaces(pim, rp_info); |
472ad383 | 553 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 554 | return PIM_SUCCESS; |
75a26779 DS |
555 | } |
556 | ||
fec883d9 DS |
557 | int pim_rp_del(struct pim_instance *pim, const char *rp, |
558 | const char *group_range, const char *plist) | |
75a26779 | 559 | { |
d62a17ae | 560 | struct prefix group; |
561 | struct in_addr rp_addr; | |
562 | struct prefix g_all; | |
563 | struct rp_info *rp_info; | |
564 | struct rp_info *rp_all; | |
565 | int result; | |
566 | struct prefix nht_p; | |
89b68082 DS |
567 | struct route_node *rn; |
568 | bool was_plist = false; | |
d62a17ae | 569 | |
570 | if (group_range == NULL) | |
571 | result = str2prefix("224.0.0.0/4", &group); | |
572 | else | |
573 | result = str2prefix(group_range, &group); | |
574 | ||
575 | if (!result) | |
576 | return PIM_GROUP_BAD_ADDRESS; | |
577 | ||
578 | result = inet_pton(AF_INET, rp, &rp_addr); | |
579 | if (result <= 0) | |
580 | return PIM_RP_BAD_ADDRESS; | |
581 | ||
582 | if (plist) | |
d9c9a9ee | 583 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 584 | else |
d9c9a9ee | 585 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 586 | |
587 | if (!rp_info) | |
588 | return PIM_RP_NOT_FOUND; | |
589 | ||
590 | if (rp_info->plist) { | |
591 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
89b68082 | 592 | was_plist = true; |
d62a17ae | 593 | } |
594 | ||
595 | /* Deregister addr with Zebra NHT */ | |
596 | nht_p.family = AF_INET; | |
597 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
598 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 599 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 600 | char buf[PREFIX2STR_BUFFER]; |
601 | prefix2str(&nht_p, buf, sizeof(buf)); | |
602 | zlog_debug("%s: Deregister RP addr %s with Zebra ", | |
603 | __PRETTY_FUNCTION__, buf); | |
604 | } | |
fec883d9 | 605 | pim_delete_tracked_nexthop(pim, &nht_p, NULL, rp_info); |
d62a17ae | 606 | |
e691f179 DS |
607 | if (!str2prefix("224.0.0.0/4", &g_all)) |
608 | return PIM_RP_BAD_ADDRESS; | |
609 | ||
d9c9a9ee | 610 | rp_all = pim_rp_find_match_group(pim, &g_all); |
d62a17ae | 611 | |
612 | if (rp_all == rp_info) { | |
613 | rp_all->rp.rpf_addr.family = AF_INET; | |
614 | rp_all->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
615 | rp_all->i_am_rp = 0; | |
616 | return PIM_SUCCESS; | |
617 | } | |
618 | ||
d9c9a9ee | 619 | listnode_delete(pim->rp_list, rp_info); |
89b68082 DS |
620 | |
621 | if (!was_plist) { | |
622 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
623 | if (rn) { | |
624 | if (rn->info != rp_info) | |
af4c2728 | 625 | flog_err( |
3613d898 DS |
626 | LIB_ERR_DEVELOPMENT, |
627 | "Expected rn->info to be equal to rp_info"); | |
89b68082 DS |
628 | |
629 | if (PIM_DEBUG_TRACE) { | |
630 | char buf[PREFIX_STRLEN]; | |
631 | ||
996c9314 LB |
632 | zlog_debug( |
633 | "%s:Found for Freeing: %p for rp_info: %p(%s) Lock: %d", | |
634 | __PRETTY_FUNCTION__, rn, rp_info, | |
635 | prefix2str(&rp_info->group, buf, | |
636 | sizeof(buf)), | |
637 | rn->lock); | |
89b68082 DS |
638 | } |
639 | rn->info = NULL; | |
640 | route_unlock_node(rn); | |
641 | route_unlock_node(rn); | |
642 | } | |
643 | } | |
644 | ||
472ad383 | 645 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f DS |
646 | |
647 | XFREE(MTYPE_PIM_RP, rp_info); | |
d62a17ae | 648 | return PIM_SUCCESS; |
75a26779 | 649 | } |
13afbd05 | 650 | |
fec883d9 | 651 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 652 | { |
d62a17ae | 653 | struct listnode *node; |
654 | struct rp_info *rp_info; | |
d62a17ae | 655 | struct prefix nht_p; |
656 | struct pim_nexthop_cache pnc; | |
657 | ||
d9c9a9ee | 658 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 659 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
660 | continue; | |
661 | ||
662 | nht_p.family = AF_INET; | |
663 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
664 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
665 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
666 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
667 | pim_ecmp_nexthop_search(pim, &pnc, | |
cb9c7c50 DS |
668 | &rp_info->rp.source_nexthop, |
669 | &nht_p, &rp_info->group, 1); | |
670 | else { | |
3d225d48 | 671 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 672 | char buf[PREFIX2STR_BUFFER]; |
673 | prefix2str(&nht_p, buf, sizeof(buf)); | |
674 | zlog_debug( | |
675 | "%s: NHT Local Nexthop not found for RP %s ", | |
676 | __PRETTY_FUNCTION__, buf); | |
677 | } | |
ff5d90c2 DS |
678 | if (!pim_ecmp_nexthop_lookup(pim, |
679 | &rp_info->rp.source_nexthop, | |
680 | &nht_p, &rp_info->group, 1)) | |
3d225d48 | 681 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 682 | zlog_debug( |
683 | "Unable to lookup nexthop for rp specified"); | |
d62a17ae | 684 | } |
685 | } | |
13afbd05 DS |
686 | } |
687 | ||
54b97c74 | 688 | /* |
7176984f | 689 | * Checks to see if we should elect ourself the actual RP when new if |
690 | * addresses are added against an interface. | |
54b97c74 | 691 | */ |
d62a17ae | 692 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 693 | { |
d62a17ae | 694 | struct listnode *node; |
695 | struct rp_info *rp_info; | |
696 | bool i_am_rp_changed = false; | |
d9c9a9ee | 697 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 698 | |
d9c9a9ee | 699 | if (pim->rp_list == NULL) |
d62a17ae | 700 | return; |
701 | ||
d9c9a9ee | 702 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 703 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
704 | continue; | |
705 | ||
706 | /* if i_am_rp is already set nothing to be done (adding new | |
707 | * addresses | |
708 | * is not going to make a difference). */ | |
709 | if (rp_info->i_am_rp) { | |
710 | continue; | |
711 | } | |
712 | ||
713 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
714 | i_am_rp_changed = true; | |
715 | rp_info->i_am_rp = 1; | |
3d225d48 | 716 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 717 | char rp[PREFIX_STRLEN]; |
718 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
719 | rp, sizeof(rp)); | |
720 | zlog_debug("%s: %s: i am rp", __func__, rp); | |
721 | } | |
722 | } | |
723 | } | |
724 | ||
725 | if (i_am_rp_changed) { | |
472ad383 | 726 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 727 | } |
7176984f | 728 | } |
36d6bd7d | 729 | |
7176984f | 730 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
731 | * are removed. Removing numbers is an uncommon event in an active network | |
732 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 733 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 734 | { |
d62a17ae | 735 | struct listnode *node; |
736 | struct rp_info *rp_info; | |
737 | bool i_am_rp_changed = false; | |
738 | int old_i_am_rp; | |
739 | ||
d9c9a9ee | 740 | if (pim->rp_list == NULL) |
d62a17ae | 741 | return; |
742 | ||
d9c9a9ee | 743 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 744 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
745 | continue; | |
746 | ||
747 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 748 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 749 | |
750 | if (old_i_am_rp != rp_info->i_am_rp) { | |
751 | i_am_rp_changed = true; | |
3d225d48 | 752 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 753 | char rp[PREFIX_STRLEN]; |
754 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
755 | rp, sizeof(rp)); | |
756 | if (rp_info->i_am_rp) { | |
757 | zlog_debug("%s: %s: i am rp", __func__, | |
758 | rp); | |
759 | } else { | |
760 | zlog_debug("%s: %s: i am no longer rp", | |
761 | __func__, rp); | |
762 | } | |
763 | } | |
764 | } | |
765 | } | |
766 | ||
767 | if (i_am_rp_changed) { | |
472ad383 | 768 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 769 | } |
54b97c74 DS |
770 | } |
771 | ||
772 | /* | |
773 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
774 | * this router is the RP for the group. | |
775 | * | |
776 | * Since we only have static RP, all groups are part of this RP | |
777 | */ | |
d9c9a9ee | 778 | int pim_rp_i_am_rp(struct pim_instance *pim, struct in_addr group) |
54b97c74 | 779 | { |
d62a17ae | 780 | struct prefix g; |
781 | struct rp_info *rp_info; | |
36d6bd7d | 782 | |
d62a17ae | 783 | memset(&g, 0, sizeof(g)); |
784 | g.family = AF_INET; | |
785 | g.prefixlen = 32; | |
786 | g.u.prefix4 = group; | |
36d6bd7d | 787 | |
d9c9a9ee | 788 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 789 | |
d62a17ae | 790 | if (rp_info) |
791 | return rp_info->i_am_rp; | |
36d6bd7d | 792 | |
d62a17ae | 793 | return 0; |
54b97c74 DS |
794 | } |
795 | ||
71694057 DS |
796 | /* |
797 | * RP(G) | |
798 | * | |
799 | * Return the RP that the Group belongs too. | |
800 | */ | |
fec883d9 | 801 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, struct in_addr group) |
71694057 | 802 | { |
d62a17ae | 803 | struct prefix g; |
804 | struct rp_info *rp_info; | |
805 | ||
806 | memset(&g, 0, sizeof(g)); | |
807 | g.family = AF_INET; | |
808 | g.prefixlen = 32; | |
809 | g.u.prefix4 = group; | |
810 | ||
d9c9a9ee | 811 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 812 | |
813 | if (rp_info) { | |
814 | struct prefix nht_p; | |
815 | struct pim_nexthop_cache pnc; | |
816 | /* Register addr with Zebra NHT */ | |
817 | nht_p.family = AF_INET; | |
818 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
819 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 820 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 821 | char buf[PREFIX2STR_BUFFER]; |
822 | char buf1[PREFIX2STR_BUFFER]; | |
823 | prefix2str(&nht_p, buf, sizeof(buf)); | |
824 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
825 | zlog_debug( | |
826 | "%s: NHT Register RP addr %s grp %s with Zebra", | |
827 | __PRETTY_FUNCTION__, buf, buf1); | |
828 | } | |
829 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
830 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
831 | pim_ecmp_nexthop_search(pim, &pnc, | |
d62a17ae | 832 | &rp_info->rp.source_nexthop, |
833 | &nht_p, &rp_info->group, 1); | |
cb9c7c50 | 834 | else { |
3d225d48 | 835 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 836 | char buf[PREFIX2STR_BUFFER]; |
837 | char buf1[PREFIX2STR_BUFFER]; | |
838 | prefix2str(&nht_p, buf, sizeof(buf)); | |
839 | prefix2str(&g, buf1, sizeof(buf1)); | |
840 | zlog_debug( | |
841 | "%s: Nexthop cache not found for RP %s grp %s register with Zebra", | |
842 | __PRETTY_FUNCTION__, buf, buf1); | |
843 | } | |
bfc92019 | 844 | pim_rpf_set_refresh_time(pim); |
56cb79b6 A |
845 | (void)pim_ecmp_nexthop_lookup( |
846 | pim, &rp_info->rp.source_nexthop, &nht_p, | |
847 | &rp_info->group, 1); | |
d62a17ae | 848 | } |
849 | return (&rp_info->rp); | |
850 | } | |
851 | ||
852 | // About to Go Down | |
853 | return NULL; | |
71694057 DS |
854 | } |
855 | ||
8f5f5e91 DS |
856 | /* |
857 | * Set the upstream IP address we want to talk to based upon | |
858 | * the rp configured and the source address | |
859 | * | |
860 | * If we have don't have a RP configured and the source address is * | |
861 | * then return failure. | |
862 | * | |
863 | */ | |
d9c9a9ee DS |
864 | int pim_rp_set_upstream_addr(struct pim_instance *pim, struct in_addr *up, |
865 | struct in_addr source, struct in_addr group) | |
8f5f5e91 | 866 | { |
d62a17ae | 867 | struct rp_info *rp_info; |
868 | struct prefix g; | |
36d6bd7d | 869 | |
d62a17ae | 870 | memset(&g, 0, sizeof(g)); |
871 | g.family = AF_INET; | |
872 | g.prefixlen = 32; | |
873 | g.u.prefix4 = group; | |
36d6bd7d | 874 | |
d9c9a9ee | 875 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 876 | |
d62a17ae | 877 | if ((pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
878 | && (source.s_addr == INADDR_ANY)) { | |
3d225d48 | 879 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 880 | zlog_debug("%s: Received a (*,G) with no RP configured", |
881 | __PRETTY_FUNCTION__); | |
882 | return 0; | |
883 | } | |
8f5f5e91 | 884 | |
d62a17ae | 885 | *up = (source.s_addr == INADDR_ANY) ? rp_info->rp.rpf_addr.u.prefix4 |
886 | : source; | |
8f5f5e91 | 887 | |
d62a17ae | 888 | return 1; |
8f5f5e91 | 889 | } |
75a26779 | 890 | |
0c8b717e DS |
891 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
892 | const char *spaces) | |
75a26779 | 893 | { |
d62a17ae | 894 | struct listnode *node; |
895 | struct rp_info *rp_info; | |
896 | char rp_buffer[32]; | |
897 | char group_buffer[32]; | |
898 | int count = 0; | |
899 | ||
d9c9a9ee | 900 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 901 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
902 | continue; | |
903 | ||
904 | if (rp_info->plist) | |
0c8b717e | 905 | vty_out(vty, "%sip pim rp %s prefix-list %s\n", spaces, |
d62a17ae | 906 | inet_ntop(AF_INET, |
907 | &rp_info->rp.rpf_addr.u.prefix4, | |
908 | rp_buffer, 32), | |
909 | rp_info->plist); | |
910 | else | |
0c8b717e | 911 | vty_out(vty, "%sip pim rp %s %s\n", spaces, |
d62a17ae | 912 | inet_ntop(AF_INET, |
913 | &rp_info->rp.rpf_addr.u.prefix4, | |
914 | rp_buffer, 32), | |
915 | prefix2str(&rp_info->group, group_buffer, 32)); | |
916 | count++; | |
917 | } | |
918 | ||
919 | return count; | |
75a26779 DS |
920 | } |
921 | ||
fec883d9 DS |
922 | int pim_rp_check_is_my_ip_address(struct pim_instance *pim, |
923 | struct in_addr group, | |
d62a17ae | 924 | struct in_addr dest_addr) |
75a26779 | 925 | { |
d62a17ae | 926 | struct rp_info *rp_info; |
927 | struct prefix g; | |
928 | ||
929 | memset(&g, 0, sizeof(g)); | |
930 | g.family = AF_INET; | |
931 | g.prefixlen = 32; | |
932 | g.u.prefix4 = group; | |
933 | ||
d9c9a9ee | 934 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 935 | /* |
936 | * See if we can short-cut some? | |
937 | * This might not make sense if we ever leave a static RP | |
938 | * type of configuration. | |
939 | * Note - Premature optimization might bite our patooeys' here. | |
940 | */ | |
d9c9a9ee | 941 | if (I_am_RP(pim, group)) { |
d62a17ae | 942 | if (dest_addr.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr) |
943 | return 1; | |
944 | } | |
945 | ||
fec883d9 | 946 | if (if_lookup_exact_address(&dest_addr, AF_INET, pim->vrf_id)) |
d62a17ae | 947 | return 1; |
948 | ||
949 | return 0; | |
75a26779 | 950 | } |
00d07c6f | 951 | |
64c86530 | 952 | void pim_rp_show_information(struct pim_instance *pim, struct vty *vty, |
d7c0a89a | 953 | uint8_t uj) |
00d07c6f | 954 | { |
d62a17ae | 955 | struct rp_info *rp_info; |
956 | struct rp_info *prev_rp_info = NULL; | |
957 | struct listnode *node; | |
958 | ||
959 | json_object *json = NULL; | |
960 | json_object *json_rp_rows = NULL; | |
961 | json_object *json_row = NULL; | |
962 | ||
963 | if (uj) | |
964 | json = json_object_new_object(); | |
965 | else | |
966 | vty_out(vty, | |
967 | "RP address group/prefix-list OIF I am RP\n"); | |
968 | ||
d9c9a9ee | 969 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 970 | if (!pim_rpf_addr_is_inaddr_none(&rp_info->rp)) { |
971 | char buf[48]; | |
972 | ||
973 | if (uj) { | |
974 | /* | |
975 | * If we have moved on to a new RP then add the | |
976 | * entry for the previous RP | |
977 | */ | |
978 | if (prev_rp_info | |
979 | && prev_rp_info->rp.rpf_addr.u.prefix4 | |
980 | .s_addr | |
981 | != rp_info->rp.rpf_addr.u.prefix4 | |
982 | .s_addr) { | |
983 | json_object_object_add( | |
984 | json, | |
985 | inet_ntoa(prev_rp_info->rp | |
986 | .rpf_addr.u | |
987 | .prefix4), | |
988 | json_rp_rows); | |
989 | json_rp_rows = NULL; | |
990 | } | |
991 | ||
992 | if (!json_rp_rows) | |
993 | json_rp_rows = json_object_new_array(); | |
994 | ||
995 | json_row = json_object_new_object(); | |
996 | if (rp_info->rp.source_nexthop.interface) | |
997 | json_object_string_add( | |
998 | json_row, "outboundInterface", | |
999 | rp_info->rp.source_nexthop | |
1000 | .interface->name); | |
1001 | ||
1002 | if (rp_info->i_am_rp) | |
1003 | json_object_boolean_true_add(json_row, | |
1004 | "iAmRP"); | |
1005 | ||
1006 | if (rp_info->plist) | |
1007 | json_object_string_add(json_row, | |
1008 | "prefixList", | |
1009 | rp_info->plist); | |
1010 | else | |
1011 | json_object_string_add( | |
1012 | json_row, "group", | |
1013 | prefix2str(&rp_info->group, buf, | |
1014 | 48)); | |
1015 | ||
1016 | json_object_array_add(json_rp_rows, json_row); | |
1017 | } else { | |
1018 | vty_out(vty, "%-15s ", | |
1019 | inet_ntoa(rp_info->rp.rpf_addr.u | |
1020 | .prefix4)); | |
1021 | ||
1022 | if (rp_info->plist) | |
1023 | vty_out(vty, "%-18s ", rp_info->plist); | |
1024 | else | |
1025 | vty_out(vty, "%-18s ", | |
1026 | prefix2str(&rp_info->group, buf, | |
1027 | 48)); | |
1028 | ||
1029 | if (rp_info->rp.source_nexthop.interface) | |
1030 | vty_out(vty, "%-10s ", | |
1031 | rp_info->rp.source_nexthop | |
1032 | .interface->name); | |
1033 | else | |
1034 | vty_out(vty, "%-10s ", "(Unknown)"); | |
1035 | ||
1036 | if (rp_info->i_am_rp) | |
1037 | vty_out(vty, "yes\n"); | |
1038 | else | |
1039 | vty_out(vty, "no\n"); | |
1040 | } | |
1041 | ||
1042 | prev_rp_info = rp_info; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | if (uj) { | |
1047 | if (prev_rp_info && json_rp_rows) | |
1048 | json_object_object_add( | |
1049 | json, | |
1050 | inet_ntoa(prev_rp_info->rp.rpf_addr.u.prefix4), | |
1051 | json_rp_rows); | |
1052 | ||
9d303b37 DL |
1053 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
1054 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 1055 | json_object_free(json); |
1056 | } | |
00d07c6f | 1057 | } |
cba44481 | 1058 | |
fec883d9 | 1059 | void pim_resolve_rp_nh(struct pim_instance *pim) |
cba44481 | 1060 | { |
d62a17ae | 1061 | struct listnode *node = NULL; |
1062 | struct rp_info *rp_info = NULL; | |
1063 | struct nexthop *nh_node = NULL; | |
1064 | struct prefix nht_p; | |
1065 | struct pim_nexthop_cache pnc; | |
1066 | struct pim_neighbor *nbr = NULL; | |
1067 | ||
d9c9a9ee | 1068 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 1069 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
1070 | continue; | |
1071 | ||
1072 | nht_p.family = AF_INET; | |
1073 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
1074 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
1075 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 | 1076 | if (!pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, |
25bdac42 | 1077 | &pnc)) |
cb9c7c50 DS |
1078 | continue; |
1079 | ||
1080 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
1081 | if (nh_node->gate.ipv4.s_addr != 0) | |
1082 | continue; | |
1083 | ||
1084 | struct interface *ifp1 = if_lookup_by_index( | |
fec883d9 | 1085 | nh_node->ifindex, pim->vrf_id); |
cb9c7c50 DS |
1086 | nbr = pim_neighbor_find_if(ifp1); |
1087 | if (!nbr) | |
1088 | continue; | |
1089 | ||
1090 | nh_node->gate.ipv4 = nbr->source_addr; | |
3d225d48 | 1091 | if (PIM_DEBUG_PIM_NHT_RP) { |
cb9c7c50 DS |
1092 | char str[PREFIX_STRLEN]; |
1093 | char str1[INET_ADDRSTRLEN]; | |
1094 | pim_inet4_dump("<nht_nbr?>", nbr->source_addr, | |
1095 | str1, sizeof(str1)); | |
1096 | pim_addr_dump("<nht_addr?>", &nht_p, str, | |
1097 | sizeof(str)); | |
1098 | zlog_debug( | |
1099 | "%s: addr %s new nexthop addr %s interface %s", | |
1100 | __PRETTY_FUNCTION__, str, str1, | |
1101 | ifp1->name); | |
d62a17ae | 1102 | } |
1103 | } | |
1104 | } | |
cba44481 | 1105 | } |