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8f5f5e91 DS |
1 | /* |
2 | * PIM for Quagga | |
3 | * Copyright (C) 2015 Cumulus Networks, Inc. | |
4 | * Donald Sharp | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
896014f4 DL |
15 | * |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
8f5f5e91 DS |
19 | */ |
20 | #include <zebra.h> | |
21 | ||
9bf3c633 | 22 | #include "lib/json.h" |
54b97c74 | 23 | #include "log.h" |
8f5f5e91 | 24 | #include "network.h" |
744d91b3 | 25 | #include "if.h" |
36d6bd7d DS |
26 | #include "linklist.h" |
27 | #include "prefix.h" | |
28 | #include "memory.h" | |
00d07c6f DS |
29 | #include "vty.h" |
30 | #include "vrf.h" | |
dfe43e25 | 31 | #include "plist.h" |
cba44481 | 32 | #include "nexthop.h" |
89b68082 | 33 | #include "table.h" |
8f5f5e91 DS |
34 | |
35 | #include "pimd.h" | |
75a26779 | 36 | #include "pim_vty.h" |
54b97c74 | 37 | #include "pim_str.h" |
7176984f | 38 | #include "pim_iface.h" |
8f5f5e91 | 39 | #include "pim_rp.h" |
ed66602c DS |
40 | #include "pim_str.h" |
41 | #include "pim_rpf.h" | |
13afbd05 | 42 | #include "pim_sock.h" |
36d6bd7d | 43 | #include "pim_memory.h" |
00d07c6f | 44 | #include "pim_iface.h" |
7667c556 | 45 | #include "pim_msdp.h" |
1bc98276 | 46 | #include "pim_nht.h" |
8f5f5e91 | 47 | |
36d6bd7d | 48 | |
c2cf4b02 DS |
49 | /* Cleanup pim->rpf_hash each node data */ |
50 | void pim_rp_list_hash_clean(void *data) | |
51 | { | |
7c591950 | 52 | struct pim_nexthop_cache *pnc = (struct pim_nexthop_cache *)data; |
c2cf4b02 | 53 | |
affe9e99 | 54 | list_delete_and_null(&pnc->rp_list); |
6e1ef388 | 55 | |
7c591950 DS |
56 | hash_clean(pnc->upstream_hash, NULL); |
57 | hash_free(pnc->upstream_hash); | |
58 | pnc->upstream_hash = NULL; | |
6e1ef388 DS |
59 | |
60 | XFREE(MTYPE_PIM_NEXTHOP_CACHE, pnc); | |
c2cf4b02 DS |
61 | } |
62 | ||
d62a17ae | 63 | static void pim_rp_info_free(struct rp_info *rp_info) |
36d6bd7d | 64 | { |
d62a17ae | 65 | XFREE(MTYPE_PIM_RP, rp_info); |
36d6bd7d DS |
66 | } |
67 | ||
d62a17ae | 68 | int pim_rp_list_cmp(void *v1, void *v2) |
36d6bd7d | 69 | { |
d62a17ae | 70 | struct rp_info *rp1 = (struct rp_info *)v1; |
71 | struct rp_info *rp2 = (struct rp_info *)v2; | |
72 | ||
73 | /* | |
74 | * Sort by RP IP address | |
75 | */ | |
76 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
77 | < rp2->rp.rpf_addr.u.prefix4.s_addr) | |
78 | return -1; | |
79 | ||
80 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
81 | > rp2->rp.rpf_addr.u.prefix4.s_addr) | |
82 | return 1; | |
83 | ||
84 | /* | |
85 | * Sort by group IP address | |
86 | */ | |
87 | if (rp1->group.u.prefix4.s_addr < rp2->group.u.prefix4.s_addr) | |
88 | return -1; | |
89 | ||
90 | if (rp1->group.u.prefix4.s_addr > rp2->group.u.prefix4.s_addr) | |
91 | return 1; | |
92 | ||
93 | return 0; | |
36d6bd7d DS |
94 | } |
95 | ||
d9c9a9ee | 96 | void pim_rp_init(struct pim_instance *pim) |
36d6bd7d | 97 | { |
d62a17ae | 98 | struct rp_info *rp_info; |
89b68082 | 99 | struct route_node *rn; |
36d6bd7d | 100 | |
d9c9a9ee | 101 | pim->rp_list = list_new(); |
093c928f DS |
102 | if (!pim->rp_list) { |
103 | zlog_err("Unable to alloc rp_list"); | |
104 | return; | |
105 | } | |
d9c9a9ee DS |
106 | pim->rp_list->del = (void (*)(void *))pim_rp_info_free; |
107 | pim->rp_list->cmp = pim_rp_list_cmp; | |
36d6bd7d | 108 | |
89b68082 DS |
109 | pim->rp_table = route_table_init(); |
110 | if (!pim->rp_table) { | |
111 | zlog_err("Unable to alloc rp_table"); | |
affe9e99 | 112 | list_delete_and_null(&pim->rp_list); |
89b68082 DS |
113 | return; |
114 | } | |
115 | ||
d62a17ae | 116 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); |
36d6bd7d | 117 | |
093c928f DS |
118 | if (!rp_info) { |
119 | zlog_err("Unable to alloc rp_info"); | |
89b68082 | 120 | route_table_finish(pim->rp_table); |
affe9e99 | 121 | list_delete_and_null(&pim->rp_list); |
d62a17ae | 122 | return; |
093c928f | 123 | } |
36d6bd7d | 124 | |
2e8345c1 | 125 | if (!str2prefix("224.0.0.0/4", &rp_info->group)) { |
093c928f | 126 | zlog_err("Unable to convert 224.0.0.0/4 to prefix"); |
affe9e99 | 127 | list_delete_and_null(&pim->rp_list); |
89b68082 | 128 | route_table_finish(pim->rp_table); |
2e8345c1 DS |
129 | XFREE(MTYPE_PIM_RP, rp_info); |
130 | return; | |
131 | } | |
d62a17ae | 132 | rp_info->group.family = AF_INET; |
133 | rp_info->rp.rpf_addr.family = AF_INET; | |
134 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
135 | rp_info->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
36d6bd7d | 136 | |
d9c9a9ee | 137 | listnode_add(pim->rp_list, rp_info); |
89b68082 DS |
138 | |
139 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
140 | if (!rn) { | |
141 | zlog_err("Failure to get route node for pim->rp_table"); | |
affe9e99 | 142 | list_delete_and_null(&pim->rp_list); |
89b68082 DS |
143 | route_table_finish(pim->rp_table); |
144 | XFREE(MTYPE_PIM_RP, rp_info); | |
145 | return; | |
146 | } | |
147 | ||
148 | rn->info = rp_info; | |
149 | if (PIM_DEBUG_TRACE) | |
150 | zlog_debug("Allocated: %p for rp_info: %p(224.0.0.0/4) Lock: %d", | |
151 | rn, rp_info, rn->lock); | |
36d6bd7d DS |
152 | } |
153 | ||
d9c9a9ee | 154 | void pim_rp_free(struct pim_instance *pim) |
36d6bd7d | 155 | { |
d9c9a9ee | 156 | if (pim->rp_list) |
affe9e99 | 157 | list_delete_and_null(&pim->rp_list); |
36d6bd7d DS |
158 | } |
159 | ||
dfe43e25 DW |
160 | /* |
161 | * Given an RP's prefix-list, return the RP's rp_info for that prefix-list | |
162 | */ | |
d9c9a9ee DS |
163 | static struct rp_info *pim_rp_find_prefix_list(struct pim_instance *pim, |
164 | struct in_addr rp, | |
d62a17ae | 165 | const char *plist) |
36d6bd7d | 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.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
172 | && rp_info->plist && strcmp(rp_info->plist, plist) == 0) { | |
173 | return rp_info; | |
174 | } | |
175 | } | |
176 | ||
177 | return NULL; | |
36d6bd7d DS |
178 | } |
179 | ||
dfe43e25 DW |
180 | /* |
181 | * Return true if plist is used by any rp_info | |
182 | */ | |
d9c9a9ee | 183 | static int pim_rp_prefix_list_used(struct pim_instance *pim, const char *plist) |
dfe43e25 | 184 | { |
d62a17ae | 185 | struct listnode *node; |
186 | struct rp_info *rp_info; | |
187 | ||
d9c9a9ee | 188 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 189 | if (rp_info->plist && strcmp(rp_info->plist, plist) == 0) { |
190 | return 1; | |
191 | } | |
192 | } | |
193 | ||
194 | return 0; | |
dfe43e25 DW |
195 | } |
196 | ||
197 | /* | |
d62a17ae | 198 | * Given an RP's address, return the RP's rp_info that is an exact match for |
199 | * 'group' | |
dfe43e25 | 200 | */ |
d9c9a9ee DS |
201 | static struct rp_info *pim_rp_find_exact(struct pim_instance *pim, |
202 | struct in_addr rp, | |
d62a17ae | 203 | struct prefix *group) |
36d6bd7d | 204 | { |
d62a17ae | 205 | struct listnode *node; |
206 | struct rp_info *rp_info; | |
36d6bd7d | 207 | |
d9c9a9ee | 208 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 209 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
210 | && prefix_same(&rp_info->group, group)) | |
211 | return rp_info; | |
212 | } | |
54b97c74 | 213 | |
d62a17ae | 214 | return NULL; |
36d6bd7d DS |
215 | } |
216 | ||
dfe43e25 DW |
217 | /* |
218 | * Given a group, return the rp_info for that group | |
219 | */ | |
d9c9a9ee DS |
220 | static struct rp_info *pim_rp_find_match_group(struct pim_instance *pim, |
221 | struct prefix *group) | |
36d6bd7d | 222 | { |
d62a17ae | 223 | struct listnode *node; |
b77b1550 | 224 | struct rp_info *best = NULL; |
d62a17ae | 225 | struct rp_info *rp_info; |
226 | struct prefix_list *plist; | |
b77b1550 | 227 | struct prefix *p, *bp; |
89b68082 | 228 | struct route_node *rn; |
d62a17ae | 229 | |
4646b86a | 230 | bp = NULL; |
d9c9a9ee | 231 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 232 | if (rp_info->plist) { |
233 | plist = prefix_list_lookup(AFI_IP, rp_info->plist); | |
234 | ||
b77b1550 DS |
235 | if (prefix_list_apply_which_prefix(plist, &p, group) == PREFIX_DENY) |
236 | continue; | |
237 | ||
238 | if (!best) { | |
239 | best = rp_info; | |
240 | bp = p; | |
241 | continue; | |
242 | } | |
243 | ||
4646b86a | 244 | if (bp && bp->prefixlen < p->prefixlen) { |
b77b1550 DS |
245 | best = rp_info; |
246 | bp = p; | |
247 | } | |
d62a17ae | 248 | } |
249 | } | |
250 | ||
89b68082 DS |
251 | rn = route_node_match(pim->rp_table, group); |
252 | if (!rn) { | |
253 | zlog_err("%s: BUG We should have found default group information\n", | |
254 | __PRETTY_FUNCTION__); | |
255 | return best; | |
256 | } | |
257 | ||
258 | rp_info = rn->info; | |
259 | if (PIM_DEBUG_TRACE) { | |
260 | char buf[PREFIX_STRLEN]; | |
261 | ||
262 | route_unlock_node(rn); | |
263 | zlog_debug("Lookedup: %p for rp_info: %p(%s) Lock: %d", | |
264 | rn, rp_info, | |
265 | prefix2str(&rp_info->group, buf, sizeof(buf)), | |
266 | rn->lock); | |
267 | } | |
268 | ||
269 | if (!best) | |
270 | return rp_info; | |
271 | ||
272 | if (rp_info->group.prefixlen < best->group.prefixlen) | |
273 | best = rp_info; | |
274 | ||
b77b1550 | 275 | return best; |
36d6bd7d | 276 | } |
75a26779 | 277 | |
dfe43e25 DW |
278 | /* |
279 | * When the user makes "ip pim rp" configuration changes or if they change the | |
280 | * prefix-list(s) used by these statements we must tickle the upstream state | |
281 | * for each group to make them re-lookup who their RP should be. | |
282 | * | |
283 | * This is a placeholder function for now. | |
284 | */ | |
472ad383 | 285 | static void pim_rp_refresh_group_to_rp_mapping(struct pim_instance *pim) |
dfe43e25 | 286 | { |
472ad383 | 287 | pim_msdp_i_am_rp_changed(pim); |
dfe43e25 DW |
288 | } |
289 | ||
d9c9a9ee DS |
290 | void pim_rp_prefix_list_update(struct pim_instance *pim, |
291 | struct prefix_list *plist) | |
dfe43e25 | 292 | { |
d62a17ae | 293 | struct listnode *node; |
294 | struct rp_info *rp_info; | |
295 | int refresh_needed = 0; | |
296 | ||
d9c9a9ee | 297 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 298 | if (rp_info->plist |
299 | && strcmp(rp_info->plist, prefix_list_name(plist)) == 0) { | |
300 | refresh_needed = 1; | |
301 | break; | |
302 | } | |
303 | } | |
304 | ||
305 | if (refresh_needed) | |
472ad383 | 306 | pim_rp_refresh_group_to_rp_mapping(pim); |
dfe43e25 DW |
307 | } |
308 | ||
d62a17ae | 309 | static int pim_rp_check_interface_addrs(struct rp_info *rp_info, |
310 | struct pim_interface *pim_ifp) | |
7176984f | 311 | { |
d62a17ae | 312 | struct listnode *node; |
313 | struct pim_secondary_addr *sec_addr; | |
7176984f | 314 | |
d62a17ae | 315 | if (pim_ifp->primary_address.s_addr |
316 | == rp_info->rp.rpf_addr.u.prefix4.s_addr) | |
317 | return 1; | |
7176984f | 318 | |
d62a17ae | 319 | if (!pim_ifp->sec_addr_list) { |
320 | return 0; | |
321 | } | |
7176984f | 322 | |
d62a17ae | 323 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
324 | if (prefix_same(&sec_addr->addr, &rp_info->rp.rpf_addr)) { | |
325 | return 1; | |
326 | } | |
327 | } | |
7176984f | 328 | |
d62a17ae | 329 | return 0; |
7176984f | 330 | } |
331 | ||
fec883d9 DS |
332 | static void pim_rp_check_interfaces(struct pim_instance *pim, |
333 | struct rp_info *rp_info) | |
00d07c6f | 334 | { |
d62a17ae | 335 | struct listnode *node; |
336 | struct interface *ifp; | |
00d07c6f | 337 | |
d62a17ae | 338 | rp_info->i_am_rp = 0; |
fec883d9 | 339 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(pim->vrf_id), node, ifp)) { |
d62a17ae | 340 | struct pim_interface *pim_ifp = ifp->info; |
00d07c6f | 341 | |
d62a17ae | 342 | if (!pim_ifp) |
343 | continue; | |
00d07c6f | 344 | |
d62a17ae | 345 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { |
346 | rp_info->i_am_rp = 1; | |
347 | } | |
348 | } | |
00d07c6f DS |
349 | } |
350 | ||
fec883d9 DS |
351 | int pim_rp_new(struct pim_instance *pim, const char *rp, |
352 | const char *group_range, const char *plist) | |
75a26779 | 353 | { |
d62a17ae | 354 | int result = 0; |
355 | struct rp_info *rp_info; | |
356 | struct rp_info *rp_all; | |
357 | struct prefix group_all; | |
358 | struct listnode *node, *nnode; | |
359 | struct rp_info *tmp_rp_info; | |
360 | char buffer[BUFSIZ]; | |
361 | struct prefix nht_p; | |
362 | struct pim_nexthop_cache pnc; | |
89b68082 | 363 | struct route_node *rn; |
d62a17ae | 364 | |
365 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); | |
366 | if (!rp_info) | |
367 | return PIM_MALLOC_FAIL; | |
368 | ||
369 | if (group_range == NULL) | |
370 | result = str2prefix("224.0.0.0/4", &rp_info->group); | |
371 | else | |
372 | result = str2prefix(group_range, &rp_info->group); | |
373 | ||
374 | if (!result) { | |
375 | XFREE(MTYPE_PIM_RP, rp_info); | |
376 | return PIM_GROUP_BAD_ADDRESS; | |
377 | } | |
378 | ||
379 | rp_info->rp.rpf_addr.family = AF_INET; | |
380 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
381 | result = inet_pton(rp_info->rp.rpf_addr.family, rp, | |
382 | &rp_info->rp.rpf_addr.u.prefix4); | |
383 | ||
384 | if (result <= 0) { | |
385 | XFREE(MTYPE_PIM_RP, rp_info); | |
386 | return PIM_RP_BAD_ADDRESS; | |
387 | } | |
388 | ||
389 | if (plist) { | |
390 | /* | |
391 | * Return if the prefix-list is already configured for this RP | |
392 | */ | |
d9c9a9ee | 393 | if (pim_rp_find_prefix_list(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 394 | plist)) { |
395 | XFREE(MTYPE_PIM_RP, rp_info); | |
396 | return PIM_SUCCESS; | |
397 | } | |
398 | ||
399 | /* | |
400 | * Barf if the prefix-list is already configured for an RP | |
401 | */ | |
d9c9a9ee | 402 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 403 | XFREE(MTYPE_PIM_RP, rp_info); |
404 | return PIM_RP_PFXLIST_IN_USE; | |
405 | } | |
406 | ||
407 | /* | |
408 | * Free any existing rp_info entries for this RP | |
409 | */ | |
d9c9a9ee | 410 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 411 | tmp_rp_info)) { |
412 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr | |
413 | == tmp_rp_info->rp.rpf_addr.u.prefix4.s_addr) { | |
414 | if (tmp_rp_info->plist) | |
fec883d9 | 415 | pim_rp_del(pim, rp, NULL, |
d62a17ae | 416 | tmp_rp_info->plist); |
417 | else | |
418 | pim_rp_del( | |
fec883d9 | 419 | pim, rp, |
d62a17ae | 420 | prefix2str(&tmp_rp_info->group, |
421 | buffer, BUFSIZ), | |
422 | NULL); | |
423 | } | |
424 | } | |
425 | ||
426 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
427 | } else { | |
89b68082 | 428 | |
2e8345c1 DS |
429 | if (!str2prefix("224.0.0.0/4", &group_all)) { |
430 | XFREE(MTYPE_PIM_RP, rp_info); | |
431 | return PIM_GROUP_BAD_ADDRESS; | |
432 | } | |
d9c9a9ee | 433 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 434 | |
435 | /* | |
436 | * Barf if group is a non-multicast subnet | |
437 | */ | |
438 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
439 | XFREE(MTYPE_PIM_RP, rp_info); | |
440 | return PIM_GROUP_BAD_ADDRESS; | |
441 | } | |
442 | ||
443 | /* | |
444 | * Remove any prefix-list rp_info entries for this RP | |
445 | */ | |
d9c9a9ee | 446 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 447 | tmp_rp_info)) { |
448 | if (tmp_rp_info->plist | |
449 | && rp_info->rp.rpf_addr.u.prefix4.s_addr | |
450 | == tmp_rp_info->rp.rpf_addr.u.prefix4 | |
451 | .s_addr) { | |
fec883d9 | 452 | pim_rp_del(pim, rp, NULL, tmp_rp_info->plist); |
d62a17ae | 453 | } |
454 | } | |
455 | ||
456 | /* | |
457 | * Take over the 224.0.0.0/4 group if the rp is INADDR_NONE | |
458 | */ | |
459 | if (prefix_same(&rp_all->group, &rp_info->group) | |
460 | && pim_rpf_addr_is_inaddr_none(&rp_all->rp)) { | |
461 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; | |
462 | XFREE(MTYPE_PIM_RP, rp_info); | |
463 | ||
464 | /* Register addr with Zebra NHT */ | |
465 | nht_p.family = AF_INET; | |
466 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
467 | nht_p.u.prefix4 = | |
468 | rp_all->rp.rpf_addr.u.prefix4; // RP address | |
3d225d48 | 469 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 470 | char buf[PREFIX2STR_BUFFER]; |
471 | char buf1[PREFIX2STR_BUFFER]; | |
472 | prefix2str(&nht_p, buf, sizeof(buf)); | |
473 | prefix2str(&rp_all->group, buf1, sizeof(buf1)); | |
474 | zlog_debug( | |
475 | "%s: NHT Register rp_all addr %s grp %s ", | |
476 | __PRETTY_FUNCTION__, buf, buf1); | |
477 | } | |
478 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
479 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_all, |
480 | &pnc)) { | |
cb9c7c50 | 481 | if (!pim_ecmp_nexthop_search( |
fec883d9 | 482 | pim, &pnc, |
25b787a2 DS |
483 | &rp_all->rp.source_nexthop, &nht_p, |
484 | &rp_all->group, 1)) | |
d62a17ae | 485 | return PIM_RP_NO_PATH; |
486 | } else { | |
487 | if (pim_nexthop_lookup( | |
d9c9a9ee | 488 | pim, &rp_all->rp.source_nexthop, |
d62a17ae | 489 | rp_all->rp.rpf_addr.u.prefix4, 1) |
490 | != 0) | |
491 | return PIM_RP_NO_PATH; | |
492 | } | |
fec883d9 | 493 | pim_rp_check_interfaces(pim, rp_all); |
472ad383 | 494 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 495 | return PIM_SUCCESS; |
496 | } | |
497 | ||
498 | /* | |
499 | * Return if the group is already configured for this RP | |
500 | */ | |
d9c9a9ee | 501 | if (pim_rp_find_exact(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 502 | &rp_info->group)) { |
503 | XFREE(MTYPE_PIM_RP, rp_info); | |
504 | return PIM_SUCCESS; | |
505 | } | |
506 | ||
507 | /* | |
508 | * Barf if this group is already covered by some other RP | |
509 | */ | |
d9c9a9ee | 510 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 511 | |
512 | if (tmp_rp_info) { | |
513 | if (tmp_rp_info->plist) { | |
514 | XFREE(MTYPE_PIM_RP, rp_info); | |
515 | return PIM_GROUP_PFXLIST_OVERLAP; | |
516 | } else { | |
517 | /* | |
518 | * If the only RP that covers this group is an | |
519 | * RP configured for | |
520 | * 224.0.0.0/4 that is fine, ignore that one. | |
521 | * For all others | |
522 | * though we must return PIM_GROUP_OVERLAP | |
523 | */ | |
89b68082 DS |
524 | if (prefix_same(&rp_info->group, |
525 | &tmp_rp_info->group)) { | |
d62a17ae | 526 | XFREE(MTYPE_PIM_RP, rp_info); |
527 | return PIM_GROUP_OVERLAP; | |
528 | } | |
529 | } | |
530 | } | |
531 | } | |
532 | ||
d9c9a9ee | 533 | listnode_add_sort(pim->rp_list, rp_info); |
89b68082 DS |
534 | rn = route_node_get(pim->rp_table, &rp_info->group); |
535 | if (!rn) { | |
536 | char buf[PREFIX_STRLEN]; | |
537 | zlog_err("Failure to get route node for pim->rp_table: %s", | |
538 | prefix2str(&rp_info->group, buf, sizeof(buf))); | |
539 | return PIM_MALLOC_FAIL; | |
540 | } | |
541 | rn->info = rp_info; | |
542 | ||
543 | if (PIM_DEBUG_TRACE) { | |
544 | char buf[PREFIX_STRLEN]; | |
545 | ||
546 | zlog_debug("Allocated: %p for rp_info: %p(%s) Lock: %d", | |
547 | rn, rp_info, | |
548 | prefix2str(&rp_info->group, buf, sizeof(buf)), | |
549 | rn->lock); | |
550 | } | |
d62a17ae | 551 | |
552 | /* Register addr with Zebra NHT */ | |
553 | nht_p.family = AF_INET; | |
554 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
555 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 556 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 557 | char buf[PREFIX2STR_BUFFER]; |
558 | char buf1[PREFIX2STR_BUFFER]; | |
559 | prefix2str(&nht_p, buf, sizeof(buf)); | |
560 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
561 | zlog_debug("%s: NHT Register RP addr %s grp %s with Zebra ", | |
562 | __PRETTY_FUNCTION__, buf, buf1); | |
563 | } | |
564 | ||
565 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
566 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) { |
567 | if (!pim_ecmp_nexthop_search(pim, &pnc, | |
25b787a2 | 568 | &rp_info->rp.source_nexthop, |
cb9c7c50 | 569 | &nht_p, &rp_info->group, 1)) |
d62a17ae | 570 | return PIM_RP_NO_PATH; |
571 | } else { | |
d9c9a9ee | 572 | if (pim_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
d62a17ae | 573 | rp_info->rp.rpf_addr.u.prefix4, 1) |
574 | != 0) | |
575 | return PIM_RP_NO_PATH; | |
576 | } | |
577 | ||
fec883d9 | 578 | pim_rp_check_interfaces(pim, rp_info); |
472ad383 | 579 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 580 | return PIM_SUCCESS; |
75a26779 DS |
581 | } |
582 | ||
fec883d9 DS |
583 | int pim_rp_del(struct pim_instance *pim, const char *rp, |
584 | const char *group_range, const char *plist) | |
75a26779 | 585 | { |
d62a17ae | 586 | struct prefix group; |
587 | struct in_addr rp_addr; | |
588 | struct prefix g_all; | |
589 | struct rp_info *rp_info; | |
590 | struct rp_info *rp_all; | |
591 | int result; | |
592 | struct prefix nht_p; | |
89b68082 DS |
593 | struct route_node *rn; |
594 | bool was_plist = false; | |
d62a17ae | 595 | |
596 | if (group_range == NULL) | |
597 | result = str2prefix("224.0.0.0/4", &group); | |
598 | else | |
599 | result = str2prefix(group_range, &group); | |
600 | ||
601 | if (!result) | |
602 | return PIM_GROUP_BAD_ADDRESS; | |
603 | ||
604 | result = inet_pton(AF_INET, rp, &rp_addr); | |
605 | if (result <= 0) | |
606 | return PIM_RP_BAD_ADDRESS; | |
607 | ||
608 | if (plist) | |
d9c9a9ee | 609 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 610 | else |
d9c9a9ee | 611 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 612 | |
613 | if (!rp_info) | |
614 | return PIM_RP_NOT_FOUND; | |
615 | ||
616 | if (rp_info->plist) { | |
617 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
618 | rp_info->plist = NULL; | |
89b68082 | 619 | was_plist = true; |
d62a17ae | 620 | } |
621 | ||
622 | /* Deregister addr with Zebra NHT */ | |
623 | nht_p.family = AF_INET; | |
624 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
625 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 626 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 627 | char buf[PREFIX2STR_BUFFER]; |
628 | prefix2str(&nht_p, buf, sizeof(buf)); | |
629 | zlog_debug("%s: Deregister RP addr %s with Zebra ", | |
630 | __PRETTY_FUNCTION__, buf); | |
631 | } | |
fec883d9 | 632 | pim_delete_tracked_nexthop(pim, &nht_p, NULL, rp_info); |
d62a17ae | 633 | |
e691f179 DS |
634 | if (!str2prefix("224.0.0.0/4", &g_all)) |
635 | return PIM_RP_BAD_ADDRESS; | |
636 | ||
d9c9a9ee | 637 | rp_all = pim_rp_find_match_group(pim, &g_all); |
d62a17ae | 638 | |
639 | if (rp_all == rp_info) { | |
640 | rp_all->rp.rpf_addr.family = AF_INET; | |
641 | rp_all->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
642 | rp_all->i_am_rp = 0; | |
643 | return PIM_SUCCESS; | |
644 | } | |
645 | ||
d9c9a9ee | 646 | listnode_delete(pim->rp_list, rp_info); |
89b68082 DS |
647 | |
648 | if (!was_plist) { | |
649 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
650 | if (rn) { | |
651 | if (rn->info != rp_info) | |
652 | zlog_err("WTF matey"); | |
653 | ||
654 | if (PIM_DEBUG_TRACE) { | |
655 | char buf[PREFIX_STRLEN]; | |
656 | ||
657 | zlog_debug("%s:Found for Freeing: %p for rp_info: %p(%s) Lock: %d", | |
658 | __PRETTY_FUNCTION__, | |
659 | rn, rp_info, | |
660 | prefix2str(&rp_info->group, buf, sizeof(buf)), | |
661 | rn->lock); | |
662 | } | |
663 | rn->info = NULL; | |
664 | route_unlock_node(rn); | |
665 | route_unlock_node(rn); | |
666 | } | |
667 | } | |
668 | ||
472ad383 | 669 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f DS |
670 | |
671 | XFREE(MTYPE_PIM_RP, rp_info); | |
d62a17ae | 672 | return PIM_SUCCESS; |
75a26779 | 673 | } |
13afbd05 | 674 | |
fec883d9 | 675 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 676 | { |
d62a17ae | 677 | struct listnode *node; |
678 | struct rp_info *rp_info; | |
d62a17ae | 679 | struct prefix nht_p; |
680 | struct pim_nexthop_cache pnc; | |
681 | ||
d9c9a9ee | 682 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 683 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
684 | continue; | |
685 | ||
686 | nht_p.family = AF_INET; | |
687 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
688 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
689 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
690 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
691 | pim_ecmp_nexthop_search(pim, &pnc, | |
cb9c7c50 DS |
692 | &rp_info->rp.source_nexthop, |
693 | &nht_p, &rp_info->group, 1); | |
694 | else { | |
3d225d48 | 695 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 696 | char buf[PREFIX2STR_BUFFER]; |
697 | prefix2str(&nht_p, buf, sizeof(buf)); | |
698 | zlog_debug( | |
699 | "%s: NHT Local Nexthop not found for RP %s ", | |
700 | __PRETTY_FUNCTION__, buf); | |
701 | } | |
d9c9a9ee DS |
702 | if (!pim_nexthop_lookup( |
703 | pim, &rp_info->rp.source_nexthop, | |
704 | rp_info->rp.rpf_addr.u.prefix4, 1)) | |
3d225d48 | 705 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 706 | zlog_debug( |
707 | "Unable to lookup nexthop for rp specified"); | |
d62a17ae | 708 | } |
709 | } | |
13afbd05 DS |
710 | } |
711 | ||
54b97c74 | 712 | /* |
7176984f | 713 | * Checks to see if we should elect ourself the actual RP when new if |
714 | * addresses are added against an interface. | |
54b97c74 | 715 | */ |
d62a17ae | 716 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 717 | { |
d62a17ae | 718 | struct listnode *node; |
719 | struct rp_info *rp_info; | |
720 | bool i_am_rp_changed = false; | |
d9c9a9ee | 721 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 722 | |
d9c9a9ee | 723 | if (pim->rp_list == NULL) |
d62a17ae | 724 | return; |
725 | ||
d9c9a9ee | 726 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 727 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
728 | continue; | |
729 | ||
730 | /* if i_am_rp is already set nothing to be done (adding new | |
731 | * addresses | |
732 | * is not going to make a difference). */ | |
733 | if (rp_info->i_am_rp) { | |
734 | continue; | |
735 | } | |
736 | ||
737 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
738 | i_am_rp_changed = true; | |
739 | rp_info->i_am_rp = 1; | |
3d225d48 | 740 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 741 | char rp[PREFIX_STRLEN]; |
742 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
743 | rp, sizeof(rp)); | |
744 | zlog_debug("%s: %s: i am rp", __func__, rp); | |
745 | } | |
746 | } | |
747 | } | |
748 | ||
749 | if (i_am_rp_changed) { | |
472ad383 | 750 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 751 | } |
7176984f | 752 | } |
36d6bd7d | 753 | |
7176984f | 754 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
755 | * are removed. Removing numbers is an uncommon event in an active network | |
756 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 757 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 758 | { |
d62a17ae | 759 | struct listnode *node; |
760 | struct rp_info *rp_info; | |
761 | bool i_am_rp_changed = false; | |
762 | int old_i_am_rp; | |
763 | ||
d9c9a9ee | 764 | if (pim->rp_list == NULL) |
d62a17ae | 765 | return; |
766 | ||
d9c9a9ee | 767 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 768 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
769 | continue; | |
770 | ||
771 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 772 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 773 | |
774 | if (old_i_am_rp != rp_info->i_am_rp) { | |
775 | i_am_rp_changed = true; | |
3d225d48 | 776 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 777 | char rp[PREFIX_STRLEN]; |
778 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
779 | rp, sizeof(rp)); | |
780 | if (rp_info->i_am_rp) { | |
781 | zlog_debug("%s: %s: i am rp", __func__, | |
782 | rp); | |
783 | } else { | |
784 | zlog_debug("%s: %s: i am no longer rp", | |
785 | __func__, rp); | |
786 | } | |
787 | } | |
788 | } | |
789 | } | |
790 | ||
791 | if (i_am_rp_changed) { | |
472ad383 | 792 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 793 | } |
54b97c74 DS |
794 | } |
795 | ||
796 | /* | |
797 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
798 | * this router is the RP for the group. | |
799 | * | |
800 | * Since we only have static RP, all groups are part of this RP | |
801 | */ | |
d9c9a9ee | 802 | int pim_rp_i_am_rp(struct pim_instance *pim, struct in_addr group) |
54b97c74 | 803 | { |
d62a17ae | 804 | struct prefix g; |
805 | struct rp_info *rp_info; | |
36d6bd7d | 806 | |
d62a17ae | 807 | memset(&g, 0, sizeof(g)); |
808 | g.family = AF_INET; | |
809 | g.prefixlen = 32; | |
810 | g.u.prefix4 = group; | |
36d6bd7d | 811 | |
d9c9a9ee | 812 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 813 | |
d62a17ae | 814 | if (rp_info) |
815 | return rp_info->i_am_rp; | |
36d6bd7d | 816 | |
d62a17ae | 817 | return 0; |
54b97c74 DS |
818 | } |
819 | ||
71694057 DS |
820 | /* |
821 | * RP(G) | |
822 | * | |
823 | * Return the RP that the Group belongs too. | |
824 | */ | |
fec883d9 | 825 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, struct in_addr group) |
71694057 | 826 | { |
d62a17ae | 827 | struct prefix g; |
828 | struct rp_info *rp_info; | |
829 | ||
830 | memset(&g, 0, sizeof(g)); | |
831 | g.family = AF_INET; | |
832 | g.prefixlen = 32; | |
833 | g.u.prefix4 = group; | |
834 | ||
d9c9a9ee | 835 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 836 | |
837 | if (rp_info) { | |
838 | struct prefix nht_p; | |
839 | struct pim_nexthop_cache pnc; | |
840 | /* Register addr with Zebra NHT */ | |
841 | nht_p.family = AF_INET; | |
842 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
843 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 844 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 845 | char buf[PREFIX2STR_BUFFER]; |
846 | char buf1[PREFIX2STR_BUFFER]; | |
847 | prefix2str(&nht_p, buf, sizeof(buf)); | |
848 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
849 | zlog_debug( | |
850 | "%s: NHT Register RP addr %s grp %s with Zebra", | |
851 | __PRETTY_FUNCTION__, buf, buf1); | |
852 | } | |
853 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
854 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
855 | pim_ecmp_nexthop_search(pim, &pnc, | |
d62a17ae | 856 | &rp_info->rp.source_nexthop, |
857 | &nht_p, &rp_info->group, 1); | |
cb9c7c50 | 858 | else { |
3d225d48 | 859 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 860 | char buf[PREFIX2STR_BUFFER]; |
861 | char buf1[PREFIX2STR_BUFFER]; | |
862 | prefix2str(&nht_p, buf, sizeof(buf)); | |
863 | prefix2str(&g, buf1, sizeof(buf1)); | |
864 | zlog_debug( | |
865 | "%s: Nexthop cache not found for RP %s grp %s register with Zebra", | |
866 | __PRETTY_FUNCTION__, buf, buf1); | |
867 | } | |
868 | pim_rpf_set_refresh_time(); | |
d9c9a9ee | 869 | pim_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
d62a17ae | 870 | rp_info->rp.rpf_addr.u.prefix4, 1); |
871 | } | |
872 | return (&rp_info->rp); | |
873 | } | |
874 | ||
875 | // About to Go Down | |
876 | return NULL; | |
71694057 DS |
877 | } |
878 | ||
8f5f5e91 DS |
879 | /* |
880 | * Set the upstream IP address we want to talk to based upon | |
881 | * the rp configured and the source address | |
882 | * | |
883 | * If we have don't have a RP configured and the source address is * | |
884 | * then return failure. | |
885 | * | |
886 | */ | |
d9c9a9ee DS |
887 | int pim_rp_set_upstream_addr(struct pim_instance *pim, struct in_addr *up, |
888 | struct in_addr source, struct in_addr group) | |
8f5f5e91 | 889 | { |
d62a17ae | 890 | struct rp_info *rp_info; |
891 | struct prefix g; | |
36d6bd7d | 892 | |
d62a17ae | 893 | memset(&g, 0, sizeof(g)); |
894 | g.family = AF_INET; | |
895 | g.prefixlen = 32; | |
896 | g.u.prefix4 = group; | |
36d6bd7d | 897 | |
d9c9a9ee | 898 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 899 | |
d62a17ae | 900 | if ((pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
901 | && (source.s_addr == INADDR_ANY)) { | |
3d225d48 | 902 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 903 | zlog_debug("%s: Received a (*,G) with no RP configured", |
904 | __PRETTY_FUNCTION__); | |
905 | return 0; | |
906 | } | |
8f5f5e91 | 907 | |
d62a17ae | 908 | *up = (source.s_addr == INADDR_ANY) ? rp_info->rp.rpf_addr.u.prefix4 |
909 | : source; | |
8f5f5e91 | 910 | |
d62a17ae | 911 | return 1; |
8f5f5e91 | 912 | } |
75a26779 | 913 | |
0c8b717e DS |
914 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
915 | const char *spaces) | |
75a26779 | 916 | { |
d62a17ae | 917 | struct listnode *node; |
918 | struct rp_info *rp_info; | |
919 | char rp_buffer[32]; | |
920 | char group_buffer[32]; | |
921 | int count = 0; | |
922 | ||
d9c9a9ee | 923 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 924 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
925 | continue; | |
926 | ||
927 | if (rp_info->plist) | |
0c8b717e | 928 | vty_out(vty, "%sip pim rp %s prefix-list %s\n", spaces, |
d62a17ae | 929 | inet_ntop(AF_INET, |
930 | &rp_info->rp.rpf_addr.u.prefix4, | |
931 | rp_buffer, 32), | |
932 | rp_info->plist); | |
933 | else | |
0c8b717e | 934 | vty_out(vty, "%sip pim rp %s %s\n", spaces, |
d62a17ae | 935 | inet_ntop(AF_INET, |
936 | &rp_info->rp.rpf_addr.u.prefix4, | |
937 | rp_buffer, 32), | |
938 | prefix2str(&rp_info->group, group_buffer, 32)); | |
939 | count++; | |
940 | } | |
941 | ||
942 | return count; | |
75a26779 DS |
943 | } |
944 | ||
fec883d9 DS |
945 | int pim_rp_check_is_my_ip_address(struct pim_instance *pim, |
946 | struct in_addr group, | |
d62a17ae | 947 | struct in_addr dest_addr) |
75a26779 | 948 | { |
d62a17ae | 949 | struct rp_info *rp_info; |
950 | struct prefix g; | |
951 | ||
952 | memset(&g, 0, sizeof(g)); | |
953 | g.family = AF_INET; | |
954 | g.prefixlen = 32; | |
955 | g.u.prefix4 = group; | |
956 | ||
d9c9a9ee | 957 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 958 | /* |
959 | * See if we can short-cut some? | |
960 | * This might not make sense if we ever leave a static RP | |
961 | * type of configuration. | |
962 | * Note - Premature optimization might bite our patooeys' here. | |
963 | */ | |
d9c9a9ee | 964 | if (I_am_RP(pim, group)) { |
d62a17ae | 965 | if (dest_addr.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr) |
966 | return 1; | |
967 | } | |
968 | ||
fec883d9 | 969 | if (if_lookup_exact_address(&dest_addr, AF_INET, pim->vrf_id)) |
d62a17ae | 970 | return 1; |
971 | ||
972 | return 0; | |
75a26779 | 973 | } |
00d07c6f | 974 | |
64c86530 | 975 | void pim_rp_show_information(struct pim_instance *pim, struct vty *vty, |
d9c9a9ee | 976 | u_char uj) |
00d07c6f | 977 | { |
d62a17ae | 978 | struct rp_info *rp_info; |
979 | struct rp_info *prev_rp_info = NULL; | |
980 | struct listnode *node; | |
981 | ||
982 | json_object *json = NULL; | |
983 | json_object *json_rp_rows = NULL; | |
984 | json_object *json_row = NULL; | |
985 | ||
986 | if (uj) | |
987 | json = json_object_new_object(); | |
988 | else | |
989 | vty_out(vty, | |
990 | "RP address group/prefix-list OIF I am RP\n"); | |
991 | ||
d9c9a9ee | 992 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 993 | if (!pim_rpf_addr_is_inaddr_none(&rp_info->rp)) { |
994 | char buf[48]; | |
995 | ||
996 | if (uj) { | |
997 | /* | |
998 | * If we have moved on to a new RP then add the | |
999 | * entry for the previous RP | |
1000 | */ | |
1001 | if (prev_rp_info | |
1002 | && prev_rp_info->rp.rpf_addr.u.prefix4 | |
1003 | .s_addr | |
1004 | != rp_info->rp.rpf_addr.u.prefix4 | |
1005 | .s_addr) { | |
1006 | json_object_object_add( | |
1007 | json, | |
1008 | inet_ntoa(prev_rp_info->rp | |
1009 | .rpf_addr.u | |
1010 | .prefix4), | |
1011 | json_rp_rows); | |
1012 | json_rp_rows = NULL; | |
1013 | } | |
1014 | ||
1015 | if (!json_rp_rows) | |
1016 | json_rp_rows = json_object_new_array(); | |
1017 | ||
1018 | json_row = json_object_new_object(); | |
1019 | if (rp_info->rp.source_nexthop.interface) | |
1020 | json_object_string_add( | |
1021 | json_row, "outboundInterface", | |
1022 | rp_info->rp.source_nexthop | |
1023 | .interface->name); | |
1024 | ||
1025 | if (rp_info->i_am_rp) | |
1026 | json_object_boolean_true_add(json_row, | |
1027 | "iAmRP"); | |
1028 | ||
1029 | if (rp_info->plist) | |
1030 | json_object_string_add(json_row, | |
1031 | "prefixList", | |
1032 | rp_info->plist); | |
1033 | else | |
1034 | json_object_string_add( | |
1035 | json_row, "group", | |
1036 | prefix2str(&rp_info->group, buf, | |
1037 | 48)); | |
1038 | ||
1039 | json_object_array_add(json_rp_rows, json_row); | |
1040 | } else { | |
1041 | vty_out(vty, "%-15s ", | |
1042 | inet_ntoa(rp_info->rp.rpf_addr.u | |
1043 | .prefix4)); | |
1044 | ||
1045 | if (rp_info->plist) | |
1046 | vty_out(vty, "%-18s ", rp_info->plist); | |
1047 | else | |
1048 | vty_out(vty, "%-18s ", | |
1049 | prefix2str(&rp_info->group, buf, | |
1050 | 48)); | |
1051 | ||
1052 | if (rp_info->rp.source_nexthop.interface) | |
1053 | vty_out(vty, "%-10s ", | |
1054 | rp_info->rp.source_nexthop | |
1055 | .interface->name); | |
1056 | else | |
1057 | vty_out(vty, "%-10s ", "(Unknown)"); | |
1058 | ||
1059 | if (rp_info->i_am_rp) | |
1060 | vty_out(vty, "yes\n"); | |
1061 | else | |
1062 | vty_out(vty, "no\n"); | |
1063 | } | |
1064 | ||
1065 | prev_rp_info = rp_info; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | if (uj) { | |
1070 | if (prev_rp_info && json_rp_rows) | |
1071 | json_object_object_add( | |
1072 | json, | |
1073 | inet_ntoa(prev_rp_info->rp.rpf_addr.u.prefix4), | |
1074 | json_rp_rows); | |
1075 | ||
9d303b37 DL |
1076 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
1077 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 1078 | json_object_free(json); |
1079 | } | |
00d07c6f | 1080 | } |
cba44481 | 1081 | |
fec883d9 | 1082 | void pim_resolve_rp_nh(struct pim_instance *pim) |
cba44481 | 1083 | { |
d62a17ae | 1084 | struct listnode *node = NULL; |
1085 | struct rp_info *rp_info = NULL; | |
1086 | struct nexthop *nh_node = NULL; | |
1087 | struct prefix nht_p; | |
1088 | struct pim_nexthop_cache pnc; | |
1089 | struct pim_neighbor *nbr = NULL; | |
1090 | ||
d9c9a9ee | 1091 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 1092 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
1093 | continue; | |
1094 | ||
1095 | nht_p.family = AF_INET; | |
1096 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
1097 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
1098 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 | 1099 | if (!pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, |
25bdac42 | 1100 | &pnc)) |
cb9c7c50 DS |
1101 | continue; |
1102 | ||
1103 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
1104 | if (nh_node->gate.ipv4.s_addr != 0) | |
1105 | continue; | |
1106 | ||
1107 | struct interface *ifp1 = if_lookup_by_index( | |
fec883d9 | 1108 | nh_node->ifindex, pim->vrf_id); |
cb9c7c50 DS |
1109 | nbr = pim_neighbor_find_if(ifp1); |
1110 | if (!nbr) | |
1111 | continue; | |
1112 | ||
1113 | nh_node->gate.ipv4 = nbr->source_addr; | |
3d225d48 | 1114 | if (PIM_DEBUG_PIM_NHT_RP) { |
cb9c7c50 DS |
1115 | char str[PREFIX_STRLEN]; |
1116 | char str1[INET_ADDRSTRLEN]; | |
1117 | pim_inet4_dump("<nht_nbr?>", nbr->source_addr, | |
1118 | str1, sizeof(str1)); | |
1119 | pim_addr_dump("<nht_addr?>", &nht_p, str, | |
1120 | sizeof(str)); | |
1121 | zlog_debug( | |
1122 | "%s: addr %s new nexthop addr %s interface %s", | |
1123 | __PRETTY_FUNCTION__, str, str1, | |
1124 | ifp1->name); | |
d62a17ae | 1125 | } |
1126 | } | |
1127 | } | |
cba44481 | 1128 | } |