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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 | |
6e1ef388 DS |
54 | list_delete(pnc->rp_list); |
55 | pnc->rp_list = NULL; | |
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 | { |
d62a17ae | 66 | XFREE(MTYPE_PIM_RP, rp_info); |
36d6bd7d DS |
67 | } |
68 | ||
d62a17ae | 69 | int pim_rp_list_cmp(void *v1, void *v2) |
36d6bd7d | 70 | { |
d62a17ae | 71 | struct rp_info *rp1 = (struct rp_info *)v1; |
72 | struct rp_info *rp2 = (struct rp_info *)v2; | |
73 | ||
74 | /* | |
75 | * Sort by RP IP address | |
76 | */ | |
77 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
78 | < rp2->rp.rpf_addr.u.prefix4.s_addr) | |
79 | return -1; | |
80 | ||
81 | if (rp1->rp.rpf_addr.u.prefix4.s_addr | |
82 | > rp2->rp.rpf_addr.u.prefix4.s_addr) | |
83 | return 1; | |
84 | ||
85 | /* | |
86 | * Sort by group IP address | |
87 | */ | |
88 | if (rp1->group.u.prefix4.s_addr < rp2->group.u.prefix4.s_addr) | |
89 | return -1; | |
90 | ||
91 | if (rp1->group.u.prefix4.s_addr > rp2->group.u.prefix4.s_addr) | |
92 | return 1; | |
93 | ||
94 | return 0; | |
36d6bd7d DS |
95 | } |
96 | ||
d9c9a9ee | 97 | void pim_rp_init(struct pim_instance *pim) |
36d6bd7d | 98 | { |
d62a17ae | 99 | struct rp_info *rp_info; |
89b68082 | 100 | struct route_node *rn; |
36d6bd7d | 101 | |
d9c9a9ee | 102 | pim->rp_list = list_new(); |
093c928f DS |
103 | if (!pim->rp_list) { |
104 | zlog_err("Unable to alloc rp_list"); | |
105 | return; | |
106 | } | |
d9c9a9ee DS |
107 | pim->rp_list->del = (void (*)(void *))pim_rp_info_free; |
108 | pim->rp_list->cmp = pim_rp_list_cmp; | |
36d6bd7d | 109 | |
89b68082 DS |
110 | pim->rp_table = route_table_init(); |
111 | if (!pim->rp_table) { | |
112 | zlog_err("Unable to alloc rp_table"); | |
113 | list_delete(pim->rp_list); | |
114 | return; | |
115 | } | |
116 | ||
d62a17ae | 117 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); |
36d6bd7d | 118 | |
093c928f DS |
119 | if (!rp_info) { |
120 | zlog_err("Unable to alloc rp_info"); | |
89b68082 | 121 | route_table_finish(pim->rp_table); |
093c928f | 122 | list_delete(pim->rp_list); |
d62a17ae | 123 | return; |
093c928f | 124 | } |
36d6bd7d | 125 | |
2e8345c1 | 126 | if (!str2prefix("224.0.0.0/4", &rp_info->group)) { |
093c928f DS |
127 | zlog_err("Unable to convert 224.0.0.0/4 to prefix"); |
128 | list_delete(pim->rp_list); | |
89b68082 | 129 | route_table_finish(pim->rp_table); |
2e8345c1 DS |
130 | XFREE(MTYPE_PIM_RP, rp_info); |
131 | return; | |
132 | } | |
d62a17ae | 133 | rp_info->group.family = AF_INET; |
134 | rp_info->rp.rpf_addr.family = AF_INET; | |
135 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
136 | rp_info->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
36d6bd7d | 137 | |
d9c9a9ee | 138 | listnode_add(pim->rp_list, rp_info); |
89b68082 DS |
139 | |
140 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
141 | if (!rn) { | |
142 | zlog_err("Failure to get route node for pim->rp_table"); | |
143 | list_delete(pim->rp_list); | |
144 | route_table_finish(pim->rp_table); | |
145 | XFREE(MTYPE_PIM_RP, rp_info); | |
146 | return; | |
147 | } | |
148 | ||
149 | rn->info = rp_info; | |
150 | if (PIM_DEBUG_TRACE) | |
151 | zlog_debug("Allocated: %p for rp_info: %p(224.0.0.0/4) Lock: %d", | |
152 | rn, rp_info, rn->lock); | |
36d6bd7d DS |
153 | } |
154 | ||
d9c9a9ee | 155 | void pim_rp_free(struct pim_instance *pim) |
36d6bd7d | 156 | { |
d9c9a9ee DS |
157 | if (pim->rp_list) |
158 | list_delete(pim->rp_list); | |
159 | pim->rp_list = NULL; | |
36d6bd7d DS |
160 | } |
161 | ||
dfe43e25 DW |
162 | /* |
163 | * Given an RP's prefix-list, return the RP's rp_info for that prefix-list | |
164 | */ | |
d9c9a9ee DS |
165 | static struct rp_info *pim_rp_find_prefix_list(struct pim_instance *pim, |
166 | struct in_addr rp, | |
d62a17ae | 167 | const char *plist) |
36d6bd7d | 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.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
174 | && rp_info->plist && strcmp(rp_info->plist, plist) == 0) { | |
175 | return rp_info; | |
176 | } | |
177 | } | |
178 | ||
179 | return NULL; | |
36d6bd7d DS |
180 | } |
181 | ||
dfe43e25 DW |
182 | /* |
183 | * Return true if plist is used by any rp_info | |
184 | */ | |
d9c9a9ee | 185 | static int pim_rp_prefix_list_used(struct pim_instance *pim, const char *plist) |
dfe43e25 | 186 | { |
d62a17ae | 187 | struct listnode *node; |
188 | struct rp_info *rp_info; | |
189 | ||
d9c9a9ee | 190 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 191 | if (rp_info->plist && strcmp(rp_info->plist, plist) == 0) { |
192 | return 1; | |
193 | } | |
194 | } | |
195 | ||
196 | return 0; | |
dfe43e25 DW |
197 | } |
198 | ||
199 | /* | |
d62a17ae | 200 | * Given an RP's address, return the RP's rp_info that is an exact match for |
201 | * 'group' | |
dfe43e25 | 202 | */ |
d9c9a9ee DS |
203 | static struct rp_info *pim_rp_find_exact(struct pim_instance *pim, |
204 | struct in_addr rp, | |
d62a17ae | 205 | struct prefix *group) |
36d6bd7d | 206 | { |
d62a17ae | 207 | struct listnode *node; |
208 | struct rp_info *rp_info; | |
36d6bd7d | 209 | |
d9c9a9ee | 210 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 211 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
212 | && prefix_same(&rp_info->group, group)) | |
213 | return rp_info; | |
214 | } | |
54b97c74 | 215 | |
d62a17ae | 216 | return NULL; |
36d6bd7d DS |
217 | } |
218 | ||
dfe43e25 DW |
219 | /* |
220 | * Given a group, return the rp_info for that group | |
221 | */ | |
d9c9a9ee DS |
222 | static struct rp_info *pim_rp_find_match_group(struct pim_instance *pim, |
223 | struct prefix *group) | |
36d6bd7d | 224 | { |
d62a17ae | 225 | struct listnode *node; |
b77b1550 | 226 | struct rp_info *best = NULL; |
d62a17ae | 227 | struct rp_info *rp_info; |
228 | struct prefix_list *plist; | |
b77b1550 | 229 | struct prefix *p, *bp; |
89b68082 | 230 | struct route_node *rn; |
d62a17ae | 231 | |
d9c9a9ee | 232 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 233 | if (rp_info->plist) { |
234 | plist = prefix_list_lookup(AFI_IP, rp_info->plist); | |
235 | ||
b77b1550 DS |
236 | if (prefix_list_apply_which_prefix(plist, &p, group) == PREFIX_DENY) |
237 | continue; | |
238 | ||
239 | if (!best) { | |
240 | best = rp_info; | |
241 | bp = p; | |
242 | continue; | |
243 | } | |
244 | ||
245 | if (bp->prefixlen < p->prefixlen) { | |
246 | best = rp_info; | |
247 | bp = p; | |
248 | } | |
d62a17ae | 249 | } |
250 | } | |
251 | ||
89b68082 DS |
252 | rn = route_node_match(pim->rp_table, group); |
253 | if (!rn) { | |
254 | zlog_err("%s: BUG We should have found default group information\n", | |
255 | __PRETTY_FUNCTION__); | |
256 | return best; | |
257 | } | |
258 | ||
259 | rp_info = rn->info; | |
260 | if (PIM_DEBUG_TRACE) { | |
261 | char buf[PREFIX_STRLEN]; | |
262 | ||
263 | route_unlock_node(rn); | |
264 | zlog_debug("Lookedup: %p for rp_info: %p(%s) Lock: %d", | |
265 | rn, rp_info, | |
266 | prefix2str(&rp_info->group, buf, sizeof(buf)), | |
267 | rn->lock); | |
268 | } | |
269 | ||
270 | if (!best) | |
271 | return rp_info; | |
272 | ||
273 | if (rp_info->group.prefixlen < best->group.prefixlen) | |
274 | best = rp_info; | |
275 | ||
b77b1550 | 276 | return best; |
36d6bd7d | 277 | } |
75a26779 | 278 | |
dfe43e25 DW |
279 | /* |
280 | * When the user makes "ip pim rp" configuration changes or if they change the | |
281 | * prefix-list(s) used by these statements we must tickle the upstream state | |
282 | * for each group to make them re-lookup who their RP should be. | |
283 | * | |
284 | * This is a placeholder function for now. | |
285 | */ | |
472ad383 | 286 | static void pim_rp_refresh_group_to_rp_mapping(struct pim_instance *pim) |
dfe43e25 | 287 | { |
472ad383 | 288 | pim_msdp_i_am_rp_changed(pim); |
dfe43e25 DW |
289 | } |
290 | ||
d9c9a9ee DS |
291 | void pim_rp_prefix_list_update(struct pim_instance *pim, |
292 | struct prefix_list *plist) | |
dfe43e25 | 293 | { |
d62a17ae | 294 | struct listnode *node; |
295 | struct rp_info *rp_info; | |
296 | int refresh_needed = 0; | |
297 | ||
d9c9a9ee | 298 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 299 | if (rp_info->plist |
300 | && strcmp(rp_info->plist, prefix_list_name(plist)) == 0) { | |
301 | refresh_needed = 1; | |
302 | break; | |
303 | } | |
304 | } | |
305 | ||
306 | if (refresh_needed) | |
472ad383 | 307 | pim_rp_refresh_group_to_rp_mapping(pim); |
dfe43e25 DW |
308 | } |
309 | ||
d62a17ae | 310 | static int pim_rp_check_interface_addrs(struct rp_info *rp_info, |
311 | struct pim_interface *pim_ifp) | |
7176984f | 312 | { |
d62a17ae | 313 | struct listnode *node; |
314 | struct pim_secondary_addr *sec_addr; | |
7176984f | 315 | |
d62a17ae | 316 | if (pim_ifp->primary_address.s_addr |
317 | == rp_info->rp.rpf_addr.u.prefix4.s_addr) | |
318 | return 1; | |
7176984f | 319 | |
d62a17ae | 320 | if (!pim_ifp->sec_addr_list) { |
321 | return 0; | |
322 | } | |
7176984f | 323 | |
d62a17ae | 324 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
325 | if (prefix_same(&sec_addr->addr, &rp_info->rp.rpf_addr)) { | |
326 | return 1; | |
327 | } | |
328 | } | |
7176984f | 329 | |
d62a17ae | 330 | return 0; |
7176984f | 331 | } |
332 | ||
fec883d9 DS |
333 | static void pim_rp_check_interfaces(struct pim_instance *pim, |
334 | struct rp_info *rp_info) | |
00d07c6f | 335 | { |
d62a17ae | 336 | struct listnode *node; |
337 | struct interface *ifp; | |
00d07c6f | 338 | |
d62a17ae | 339 | rp_info->i_am_rp = 0; |
fec883d9 | 340 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(pim->vrf_id), node, ifp)) { |
d62a17ae | 341 | struct pim_interface *pim_ifp = ifp->info; |
00d07c6f | 342 | |
d62a17ae | 343 | if (!pim_ifp) |
344 | continue; | |
00d07c6f | 345 | |
d62a17ae | 346 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { |
347 | rp_info->i_am_rp = 1; | |
348 | } | |
349 | } | |
00d07c6f DS |
350 | } |
351 | ||
fec883d9 DS |
352 | int pim_rp_new(struct pim_instance *pim, const char *rp, |
353 | const char *group_range, const char *plist) | |
75a26779 | 354 | { |
d62a17ae | 355 | int result = 0; |
356 | struct rp_info *rp_info; | |
357 | struct rp_info *rp_all; | |
358 | struct prefix group_all; | |
359 | struct listnode *node, *nnode; | |
360 | struct rp_info *tmp_rp_info; | |
361 | char buffer[BUFSIZ]; | |
362 | struct prefix nht_p; | |
363 | struct pim_nexthop_cache pnc; | |
89b68082 | 364 | struct route_node *rn; |
d62a17ae | 365 | |
366 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); | |
367 | if (!rp_info) | |
368 | return PIM_MALLOC_FAIL; | |
369 | ||
370 | if (group_range == NULL) | |
371 | result = str2prefix("224.0.0.0/4", &rp_info->group); | |
372 | else | |
373 | result = str2prefix(group_range, &rp_info->group); | |
374 | ||
375 | if (!result) { | |
376 | XFREE(MTYPE_PIM_RP, rp_info); | |
377 | return PIM_GROUP_BAD_ADDRESS; | |
378 | } | |
379 | ||
380 | rp_info->rp.rpf_addr.family = AF_INET; | |
381 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
382 | result = inet_pton(rp_info->rp.rpf_addr.family, rp, | |
383 | &rp_info->rp.rpf_addr.u.prefix4); | |
384 | ||
385 | if (result <= 0) { | |
386 | XFREE(MTYPE_PIM_RP, rp_info); | |
387 | return PIM_RP_BAD_ADDRESS; | |
388 | } | |
389 | ||
390 | if (plist) { | |
391 | /* | |
392 | * Return if the prefix-list is already configured for this RP | |
393 | */ | |
d9c9a9ee | 394 | if (pim_rp_find_prefix_list(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 395 | plist)) { |
396 | XFREE(MTYPE_PIM_RP, rp_info); | |
397 | return PIM_SUCCESS; | |
398 | } | |
399 | ||
400 | /* | |
401 | * Barf if the prefix-list is already configured for an RP | |
402 | */ | |
d9c9a9ee | 403 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 404 | XFREE(MTYPE_PIM_RP, rp_info); |
405 | return PIM_RP_PFXLIST_IN_USE; | |
406 | } | |
407 | ||
408 | /* | |
409 | * Free any existing rp_info entries for this RP | |
410 | */ | |
d9c9a9ee | 411 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 412 | tmp_rp_info)) { |
413 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr | |
414 | == tmp_rp_info->rp.rpf_addr.u.prefix4.s_addr) { | |
415 | if (tmp_rp_info->plist) | |
fec883d9 | 416 | pim_rp_del(pim, rp, NULL, |
d62a17ae | 417 | tmp_rp_info->plist); |
418 | else | |
419 | pim_rp_del( | |
fec883d9 | 420 | pim, rp, |
d62a17ae | 421 | prefix2str(&tmp_rp_info->group, |
422 | buffer, BUFSIZ), | |
423 | NULL); | |
424 | } | |
425 | } | |
426 | ||
427 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
428 | } else { | |
89b68082 | 429 | |
2e8345c1 DS |
430 | if (!str2prefix("224.0.0.0/4", &group_all)) { |
431 | XFREE(MTYPE_PIM_RP, rp_info); | |
432 | return PIM_GROUP_BAD_ADDRESS; | |
433 | } | |
d9c9a9ee | 434 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 435 | |
436 | /* | |
437 | * Barf if group is a non-multicast subnet | |
438 | */ | |
439 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
440 | XFREE(MTYPE_PIM_RP, rp_info); | |
441 | return PIM_GROUP_BAD_ADDRESS; | |
442 | } | |
443 | ||
444 | /* | |
445 | * Remove any prefix-list rp_info entries for this RP | |
446 | */ | |
d9c9a9ee | 447 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 448 | tmp_rp_info)) { |
449 | if (tmp_rp_info->plist | |
450 | && rp_info->rp.rpf_addr.u.prefix4.s_addr | |
451 | == tmp_rp_info->rp.rpf_addr.u.prefix4 | |
452 | .s_addr) { | |
fec883d9 | 453 | pim_rp_del(pim, rp, NULL, tmp_rp_info->plist); |
d62a17ae | 454 | } |
455 | } | |
456 | ||
457 | /* | |
458 | * Take over the 224.0.0.0/4 group if the rp is INADDR_NONE | |
459 | */ | |
460 | if (prefix_same(&rp_all->group, &rp_info->group) | |
461 | && pim_rpf_addr_is_inaddr_none(&rp_all->rp)) { | |
462 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; | |
463 | XFREE(MTYPE_PIM_RP, rp_info); | |
464 | ||
465 | /* Register addr with Zebra NHT */ | |
466 | nht_p.family = AF_INET; | |
467 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
468 | nht_p.u.prefix4 = | |
469 | rp_all->rp.rpf_addr.u.prefix4; // RP address | |
470 | if (PIM_DEBUG_PIM_TRACE) { | |
471 | char buf[PREFIX2STR_BUFFER]; | |
472 | char buf1[PREFIX2STR_BUFFER]; | |
473 | prefix2str(&nht_p, buf, sizeof(buf)); | |
474 | prefix2str(&rp_all->group, buf1, sizeof(buf1)); | |
475 | zlog_debug( | |
476 | "%s: NHT Register rp_all addr %s grp %s ", | |
477 | __PRETTY_FUNCTION__, buf, buf1); | |
478 | } | |
479 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
480 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_all, |
481 | &pnc)) { | |
cb9c7c50 | 482 | if (!pim_ecmp_nexthop_search( |
fec883d9 | 483 | pim, &pnc, |
25b787a2 DS |
484 | &rp_all->rp.source_nexthop, &nht_p, |
485 | &rp_all->group, 1)) | |
d62a17ae | 486 | return PIM_RP_NO_PATH; |
487 | } else { | |
488 | if (pim_nexthop_lookup( | |
d9c9a9ee | 489 | pim, &rp_all->rp.source_nexthop, |
d62a17ae | 490 | rp_all->rp.rpf_addr.u.prefix4, 1) |
491 | != 0) | |
492 | return PIM_RP_NO_PATH; | |
493 | } | |
fec883d9 | 494 | pim_rp_check_interfaces(pim, rp_all); |
472ad383 | 495 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 496 | return PIM_SUCCESS; |
497 | } | |
498 | ||
499 | /* | |
500 | * Return if the group is already configured for this RP | |
501 | */ | |
d9c9a9ee | 502 | if (pim_rp_find_exact(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 503 | &rp_info->group)) { |
504 | XFREE(MTYPE_PIM_RP, rp_info); | |
505 | return PIM_SUCCESS; | |
506 | } | |
507 | ||
508 | /* | |
509 | * Barf if this group is already covered by some other RP | |
510 | */ | |
d9c9a9ee | 511 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 512 | |
513 | if (tmp_rp_info) { | |
514 | if (tmp_rp_info->plist) { | |
515 | XFREE(MTYPE_PIM_RP, rp_info); | |
516 | return PIM_GROUP_PFXLIST_OVERLAP; | |
517 | } else { | |
518 | /* | |
519 | * If the only RP that covers this group is an | |
520 | * RP configured for | |
521 | * 224.0.0.0/4 that is fine, ignore that one. | |
522 | * For all others | |
523 | * though we must return PIM_GROUP_OVERLAP | |
524 | */ | |
89b68082 DS |
525 | if (prefix_same(&rp_info->group, |
526 | &tmp_rp_info->group)) { | |
d62a17ae | 527 | XFREE(MTYPE_PIM_RP, rp_info); |
528 | return PIM_GROUP_OVERLAP; | |
529 | } | |
530 | } | |
531 | } | |
532 | } | |
533 | ||
d9c9a9ee | 534 | listnode_add_sort(pim->rp_list, rp_info); |
89b68082 DS |
535 | rn = route_node_get(pim->rp_table, &rp_info->group); |
536 | if (!rn) { | |
537 | char buf[PREFIX_STRLEN]; | |
538 | zlog_err("Failure to get route node for pim->rp_table: %s", | |
539 | prefix2str(&rp_info->group, buf, sizeof(buf))); | |
540 | return PIM_MALLOC_FAIL; | |
541 | } | |
542 | rn->info = rp_info; | |
543 | ||
544 | if (PIM_DEBUG_TRACE) { | |
545 | char buf[PREFIX_STRLEN]; | |
546 | ||
547 | zlog_debug("Allocated: %p for rp_info: %p(%s) Lock: %d", | |
548 | rn, rp_info, | |
549 | prefix2str(&rp_info->group, buf, sizeof(buf)), | |
550 | rn->lock); | |
551 | } | |
d62a17ae | 552 | |
553 | /* Register addr with Zebra NHT */ | |
554 | nht_p.family = AF_INET; | |
555 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
556 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
557 | if (PIM_DEBUG_PIM_TRACE) { | |
558 | char buf[PREFIX2STR_BUFFER]; | |
559 | char buf1[PREFIX2STR_BUFFER]; | |
560 | prefix2str(&nht_p, buf, sizeof(buf)); | |
561 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
562 | zlog_debug("%s: NHT Register RP addr %s grp %s with Zebra ", | |
563 | __PRETTY_FUNCTION__, buf, buf1); | |
564 | } | |
565 | ||
566 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
567 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) { |
568 | if (!pim_ecmp_nexthop_search(pim, &pnc, | |
25b787a2 | 569 | &rp_info->rp.source_nexthop, |
cb9c7c50 | 570 | &nht_p, &rp_info->group, 1)) |
d62a17ae | 571 | return PIM_RP_NO_PATH; |
572 | } else { | |
d9c9a9ee | 573 | if (pim_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
d62a17ae | 574 | rp_info->rp.rpf_addr.u.prefix4, 1) |
575 | != 0) | |
576 | return PIM_RP_NO_PATH; | |
577 | } | |
578 | ||
fec883d9 | 579 | pim_rp_check_interfaces(pim, rp_info); |
472ad383 | 580 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 581 | return PIM_SUCCESS; |
75a26779 DS |
582 | } |
583 | ||
fec883d9 DS |
584 | int pim_rp_del(struct pim_instance *pim, const char *rp, |
585 | const char *group_range, const char *plist) | |
75a26779 | 586 | { |
d62a17ae | 587 | struct prefix group; |
588 | struct in_addr rp_addr; | |
589 | struct prefix g_all; | |
590 | struct rp_info *rp_info; | |
591 | struct rp_info *rp_all; | |
592 | int result; | |
593 | struct prefix nht_p; | |
89b68082 DS |
594 | struct route_node *rn; |
595 | bool was_plist = false; | |
d62a17ae | 596 | |
597 | if (group_range == NULL) | |
598 | result = str2prefix("224.0.0.0/4", &group); | |
599 | else | |
600 | result = str2prefix(group_range, &group); | |
601 | ||
602 | if (!result) | |
603 | return PIM_GROUP_BAD_ADDRESS; | |
604 | ||
605 | result = inet_pton(AF_INET, rp, &rp_addr); | |
606 | if (result <= 0) | |
607 | return PIM_RP_BAD_ADDRESS; | |
608 | ||
609 | if (plist) | |
d9c9a9ee | 610 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 611 | else |
d9c9a9ee | 612 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 613 | |
614 | if (!rp_info) | |
615 | return PIM_RP_NOT_FOUND; | |
616 | ||
617 | if (rp_info->plist) { | |
618 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
619 | rp_info->plist = NULL; | |
89b68082 | 620 | was_plist = true; |
d62a17ae | 621 | } |
622 | ||
623 | /* Deregister addr with Zebra NHT */ | |
624 | nht_p.family = AF_INET; | |
625 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
626 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
627 | if (PIM_DEBUG_PIM_TRACE) { | |
628 | char buf[PREFIX2STR_BUFFER]; | |
629 | prefix2str(&nht_p, buf, sizeof(buf)); | |
630 | zlog_debug("%s: Deregister RP addr %s with Zebra ", | |
631 | __PRETTY_FUNCTION__, buf); | |
632 | } | |
fec883d9 | 633 | pim_delete_tracked_nexthop(pim, &nht_p, NULL, rp_info); |
d62a17ae | 634 | |
635 | str2prefix("224.0.0.0/4", &g_all); | |
d9c9a9ee | 636 | rp_all = pim_rp_find_match_group(pim, &g_all); |
d62a17ae | 637 | |
638 | if (rp_all == rp_info) { | |
639 | rp_all->rp.rpf_addr.family = AF_INET; | |
640 | rp_all->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
641 | rp_all->i_am_rp = 0; | |
642 | return PIM_SUCCESS; | |
643 | } | |
644 | ||
d9c9a9ee | 645 | listnode_delete(pim->rp_list, rp_info); |
89b68082 DS |
646 | |
647 | if (!was_plist) { | |
648 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
649 | if (rn) { | |
650 | if (rn->info != rp_info) | |
651 | zlog_err("WTF matey"); | |
652 | ||
653 | if (PIM_DEBUG_TRACE) { | |
654 | char buf[PREFIX_STRLEN]; | |
655 | ||
656 | zlog_debug("%s:Found for Freeing: %p for rp_info: %p(%s) Lock: %d", | |
657 | __PRETTY_FUNCTION__, | |
658 | rn, rp_info, | |
659 | prefix2str(&rp_info->group, buf, sizeof(buf)), | |
660 | rn->lock); | |
661 | } | |
662 | rn->info = NULL; | |
663 | route_unlock_node(rn); | |
664 | route_unlock_node(rn); | |
665 | } | |
666 | } | |
667 | ||
472ad383 | 668 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f DS |
669 | |
670 | XFREE(MTYPE_PIM_RP, rp_info); | |
d62a17ae | 671 | return PIM_SUCCESS; |
75a26779 | 672 | } |
13afbd05 | 673 | |
fec883d9 | 674 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 675 | { |
d62a17ae | 676 | struct listnode *node; |
677 | struct rp_info *rp_info; | |
d62a17ae | 678 | struct prefix nht_p; |
679 | struct pim_nexthop_cache pnc; | |
680 | ||
d9c9a9ee | 681 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 682 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
683 | continue; | |
684 | ||
685 | nht_p.family = AF_INET; | |
686 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
687 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
688 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
689 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
690 | pim_ecmp_nexthop_search(pim, &pnc, | |
cb9c7c50 DS |
691 | &rp_info->rp.source_nexthop, |
692 | &nht_p, &rp_info->group, 1); | |
693 | else { | |
d62a17ae | 694 | if (PIM_DEBUG_ZEBRA) { |
695 | char buf[PREFIX2STR_BUFFER]; | |
696 | prefix2str(&nht_p, buf, sizeof(buf)); | |
697 | zlog_debug( | |
698 | "%s: NHT Local Nexthop not found for RP %s ", | |
699 | __PRETTY_FUNCTION__, buf); | |
700 | } | |
d9c9a9ee DS |
701 | if (!pim_nexthop_lookup( |
702 | pim, &rp_info->rp.source_nexthop, | |
703 | rp_info->rp.rpf_addr.u.prefix4, 1)) | |
d62a17ae | 704 | if (PIM_DEBUG_PIM_TRACE) |
705 | zlog_debug( | |
706 | "Unable to lookup nexthop for rp specified"); | |
d62a17ae | 707 | } |
708 | } | |
13afbd05 DS |
709 | } |
710 | ||
54b97c74 | 711 | /* |
7176984f | 712 | * Checks to see if we should elect ourself the actual RP when new if |
713 | * addresses are added against an interface. | |
54b97c74 | 714 | */ |
d62a17ae | 715 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 716 | { |
d62a17ae | 717 | struct listnode *node; |
718 | struct rp_info *rp_info; | |
719 | bool i_am_rp_changed = false; | |
d9c9a9ee | 720 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 721 | |
d9c9a9ee | 722 | if (pim->rp_list == NULL) |
d62a17ae | 723 | return; |
724 | ||
d9c9a9ee | 725 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 726 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
727 | continue; | |
728 | ||
729 | /* if i_am_rp is already set nothing to be done (adding new | |
730 | * addresses | |
731 | * is not going to make a difference). */ | |
732 | if (rp_info->i_am_rp) { | |
733 | continue; | |
734 | } | |
735 | ||
736 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
737 | i_am_rp_changed = true; | |
738 | rp_info->i_am_rp = 1; | |
739 | if (PIM_DEBUG_ZEBRA) { | |
740 | char rp[PREFIX_STRLEN]; | |
741 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
742 | rp, sizeof(rp)); | |
743 | zlog_debug("%s: %s: i am rp", __func__, rp); | |
744 | } | |
745 | } | |
746 | } | |
747 | ||
748 | if (i_am_rp_changed) { | |
472ad383 | 749 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 750 | } |
7176984f | 751 | } |
36d6bd7d | 752 | |
7176984f | 753 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
754 | * are removed. Removing numbers is an uncommon event in an active network | |
755 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 756 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 757 | { |
d62a17ae | 758 | struct listnode *node; |
759 | struct rp_info *rp_info; | |
760 | bool i_am_rp_changed = false; | |
761 | int old_i_am_rp; | |
762 | ||
d9c9a9ee | 763 | if (pim->rp_list == NULL) |
d62a17ae | 764 | return; |
765 | ||
d9c9a9ee | 766 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 767 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
768 | continue; | |
769 | ||
770 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 771 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 772 | |
773 | if (old_i_am_rp != rp_info->i_am_rp) { | |
774 | i_am_rp_changed = true; | |
775 | if (PIM_DEBUG_ZEBRA) { | |
776 | char rp[PREFIX_STRLEN]; | |
777 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
778 | rp, sizeof(rp)); | |
779 | if (rp_info->i_am_rp) { | |
780 | zlog_debug("%s: %s: i am rp", __func__, | |
781 | rp); | |
782 | } else { | |
783 | zlog_debug("%s: %s: i am no longer rp", | |
784 | __func__, rp); | |
785 | } | |
786 | } | |
787 | } | |
788 | } | |
789 | ||
790 | if (i_am_rp_changed) { | |
472ad383 | 791 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 792 | } |
54b97c74 DS |
793 | } |
794 | ||
795 | /* | |
796 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
797 | * this router is the RP for the group. | |
798 | * | |
799 | * Since we only have static RP, all groups are part of this RP | |
800 | */ | |
d9c9a9ee | 801 | int pim_rp_i_am_rp(struct pim_instance *pim, struct in_addr group) |
54b97c74 | 802 | { |
d62a17ae | 803 | struct prefix g; |
804 | struct rp_info *rp_info; | |
36d6bd7d | 805 | |
d62a17ae | 806 | memset(&g, 0, sizeof(g)); |
807 | g.family = AF_INET; | |
808 | g.prefixlen = 32; | |
809 | g.u.prefix4 = group; | |
36d6bd7d | 810 | |
d9c9a9ee | 811 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 812 | |
d62a17ae | 813 | if (rp_info) |
814 | return rp_info->i_am_rp; | |
36d6bd7d | 815 | |
d62a17ae | 816 | return 0; |
54b97c74 DS |
817 | } |
818 | ||
71694057 DS |
819 | /* |
820 | * RP(G) | |
821 | * | |
822 | * Return the RP that the Group belongs too. | |
823 | */ | |
fec883d9 | 824 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, struct in_addr group) |
71694057 | 825 | { |
d62a17ae | 826 | struct prefix g; |
827 | struct rp_info *rp_info; | |
828 | ||
829 | memset(&g, 0, sizeof(g)); | |
830 | g.family = AF_INET; | |
831 | g.prefixlen = 32; | |
832 | g.u.prefix4 = group; | |
833 | ||
d9c9a9ee | 834 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 835 | |
836 | if (rp_info) { | |
837 | struct prefix nht_p; | |
838 | struct pim_nexthop_cache pnc; | |
839 | /* Register addr with Zebra NHT */ | |
840 | nht_p.family = AF_INET; | |
841 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
842 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
843 | if (PIM_DEBUG_PIM_TRACE) { | |
844 | char buf[PREFIX2STR_BUFFER]; | |
845 | char buf1[PREFIX2STR_BUFFER]; | |
846 | prefix2str(&nht_p, buf, sizeof(buf)); | |
847 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
848 | zlog_debug( | |
849 | "%s: NHT Register RP addr %s grp %s with Zebra", | |
850 | __PRETTY_FUNCTION__, buf, buf1); | |
851 | } | |
852 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
853 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
854 | pim_ecmp_nexthop_search(pim, &pnc, | |
d62a17ae | 855 | &rp_info->rp.source_nexthop, |
856 | &nht_p, &rp_info->group, 1); | |
cb9c7c50 | 857 | else { |
d62a17ae | 858 | if (PIM_DEBUG_ZEBRA) { |
859 | char buf[PREFIX2STR_BUFFER]; | |
860 | char buf1[PREFIX2STR_BUFFER]; | |
861 | prefix2str(&nht_p, buf, sizeof(buf)); | |
862 | prefix2str(&g, buf1, sizeof(buf1)); | |
863 | zlog_debug( | |
864 | "%s: Nexthop cache not found for RP %s grp %s register with Zebra", | |
865 | __PRETTY_FUNCTION__, buf, buf1); | |
866 | } | |
867 | pim_rpf_set_refresh_time(); | |
d9c9a9ee | 868 | pim_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
d62a17ae | 869 | rp_info->rp.rpf_addr.u.prefix4, 1); |
870 | } | |
871 | return (&rp_info->rp); | |
872 | } | |
873 | ||
874 | // About to Go Down | |
875 | return NULL; | |
71694057 DS |
876 | } |
877 | ||
8f5f5e91 DS |
878 | /* |
879 | * Set the upstream IP address we want to talk to based upon | |
880 | * the rp configured and the source address | |
881 | * | |
882 | * If we have don't have a RP configured and the source address is * | |
883 | * then return failure. | |
884 | * | |
885 | */ | |
d9c9a9ee DS |
886 | int pim_rp_set_upstream_addr(struct pim_instance *pim, struct in_addr *up, |
887 | struct in_addr source, struct in_addr group) | |
8f5f5e91 | 888 | { |
d62a17ae | 889 | struct rp_info *rp_info; |
890 | struct prefix g; | |
36d6bd7d | 891 | |
d62a17ae | 892 | memset(&g, 0, sizeof(g)); |
893 | g.family = AF_INET; | |
894 | g.prefixlen = 32; | |
895 | g.u.prefix4 = group; | |
36d6bd7d | 896 | |
d9c9a9ee | 897 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 898 | |
d62a17ae | 899 | if ((pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
900 | && (source.s_addr == INADDR_ANY)) { | |
901 | if (PIM_DEBUG_PIM_TRACE) | |
902 | zlog_debug("%s: Received a (*,G) with no RP configured", | |
903 | __PRETTY_FUNCTION__); | |
904 | return 0; | |
905 | } | |
8f5f5e91 | 906 | |
d62a17ae | 907 | *up = (source.s_addr == INADDR_ANY) ? rp_info->rp.rpf_addr.u.prefix4 |
908 | : source; | |
8f5f5e91 | 909 | |
d62a17ae | 910 | return 1; |
8f5f5e91 | 911 | } |
75a26779 | 912 | |
0c8b717e DS |
913 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
914 | const char *spaces) | |
75a26779 | 915 | { |
d62a17ae | 916 | struct listnode *node; |
917 | struct rp_info *rp_info; | |
918 | char rp_buffer[32]; | |
919 | char group_buffer[32]; | |
920 | int count = 0; | |
921 | ||
d9c9a9ee | 922 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 923 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
924 | continue; | |
925 | ||
926 | if (rp_info->plist) | |
0c8b717e | 927 | vty_out(vty, "%sip pim rp %s prefix-list %s\n", spaces, |
d62a17ae | 928 | inet_ntop(AF_INET, |
929 | &rp_info->rp.rpf_addr.u.prefix4, | |
930 | rp_buffer, 32), | |
931 | rp_info->plist); | |
932 | else | |
0c8b717e | 933 | vty_out(vty, "%sip pim rp %s %s\n", spaces, |
d62a17ae | 934 | inet_ntop(AF_INET, |
935 | &rp_info->rp.rpf_addr.u.prefix4, | |
936 | rp_buffer, 32), | |
937 | prefix2str(&rp_info->group, group_buffer, 32)); | |
938 | count++; | |
939 | } | |
940 | ||
941 | return count; | |
75a26779 DS |
942 | } |
943 | ||
fec883d9 DS |
944 | int pim_rp_check_is_my_ip_address(struct pim_instance *pim, |
945 | struct in_addr group, | |
d62a17ae | 946 | struct in_addr dest_addr) |
75a26779 | 947 | { |
d62a17ae | 948 | struct rp_info *rp_info; |
949 | struct prefix g; | |
950 | ||
951 | memset(&g, 0, sizeof(g)); | |
952 | g.family = AF_INET; | |
953 | g.prefixlen = 32; | |
954 | g.u.prefix4 = group; | |
955 | ||
d9c9a9ee | 956 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 957 | /* |
958 | * See if we can short-cut some? | |
959 | * This might not make sense if we ever leave a static RP | |
960 | * type of configuration. | |
961 | * Note - Premature optimization might bite our patooeys' here. | |
962 | */ | |
d9c9a9ee | 963 | if (I_am_RP(pim, group)) { |
d62a17ae | 964 | if (dest_addr.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr) |
965 | return 1; | |
966 | } | |
967 | ||
fec883d9 | 968 | if (if_lookup_exact_address(&dest_addr, AF_INET, pim->vrf_id)) |
d62a17ae | 969 | return 1; |
970 | ||
971 | return 0; | |
75a26779 | 972 | } |
00d07c6f | 973 | |
64c86530 | 974 | void pim_rp_show_information(struct pim_instance *pim, struct vty *vty, |
d9c9a9ee | 975 | u_char uj) |
00d07c6f | 976 | { |
d62a17ae | 977 | struct rp_info *rp_info; |
978 | struct rp_info *prev_rp_info = NULL; | |
979 | struct listnode *node; | |
980 | ||
981 | json_object *json = NULL; | |
982 | json_object *json_rp_rows = NULL; | |
983 | json_object *json_row = NULL; | |
984 | ||
985 | if (uj) | |
986 | json = json_object_new_object(); | |
987 | else | |
988 | vty_out(vty, | |
989 | "RP address group/prefix-list OIF I am RP\n"); | |
990 | ||
d9c9a9ee | 991 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 992 | if (!pim_rpf_addr_is_inaddr_none(&rp_info->rp)) { |
993 | char buf[48]; | |
994 | ||
995 | if (uj) { | |
996 | /* | |
997 | * If we have moved on to a new RP then add the | |
998 | * entry for the previous RP | |
999 | */ | |
1000 | if (prev_rp_info | |
1001 | && prev_rp_info->rp.rpf_addr.u.prefix4 | |
1002 | .s_addr | |
1003 | != rp_info->rp.rpf_addr.u.prefix4 | |
1004 | .s_addr) { | |
1005 | json_object_object_add( | |
1006 | json, | |
1007 | inet_ntoa(prev_rp_info->rp | |
1008 | .rpf_addr.u | |
1009 | .prefix4), | |
1010 | json_rp_rows); | |
1011 | json_rp_rows = NULL; | |
1012 | } | |
1013 | ||
1014 | if (!json_rp_rows) | |
1015 | json_rp_rows = json_object_new_array(); | |
1016 | ||
1017 | json_row = json_object_new_object(); | |
1018 | if (rp_info->rp.source_nexthop.interface) | |
1019 | json_object_string_add( | |
1020 | json_row, "outboundInterface", | |
1021 | rp_info->rp.source_nexthop | |
1022 | .interface->name); | |
1023 | ||
1024 | if (rp_info->i_am_rp) | |
1025 | json_object_boolean_true_add(json_row, | |
1026 | "iAmRP"); | |
1027 | ||
1028 | if (rp_info->plist) | |
1029 | json_object_string_add(json_row, | |
1030 | "prefixList", | |
1031 | rp_info->plist); | |
1032 | else | |
1033 | json_object_string_add( | |
1034 | json_row, "group", | |
1035 | prefix2str(&rp_info->group, buf, | |
1036 | 48)); | |
1037 | ||
1038 | json_object_array_add(json_rp_rows, json_row); | |
1039 | } else { | |
1040 | vty_out(vty, "%-15s ", | |
1041 | inet_ntoa(rp_info->rp.rpf_addr.u | |
1042 | .prefix4)); | |
1043 | ||
1044 | if (rp_info->plist) | |
1045 | vty_out(vty, "%-18s ", rp_info->plist); | |
1046 | else | |
1047 | vty_out(vty, "%-18s ", | |
1048 | prefix2str(&rp_info->group, buf, | |
1049 | 48)); | |
1050 | ||
1051 | if (rp_info->rp.source_nexthop.interface) | |
1052 | vty_out(vty, "%-10s ", | |
1053 | rp_info->rp.source_nexthop | |
1054 | .interface->name); | |
1055 | else | |
1056 | vty_out(vty, "%-10s ", "(Unknown)"); | |
1057 | ||
1058 | if (rp_info->i_am_rp) | |
1059 | vty_out(vty, "yes\n"); | |
1060 | else | |
1061 | vty_out(vty, "no\n"); | |
1062 | } | |
1063 | ||
1064 | prev_rp_info = rp_info; | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | if (uj) { | |
1069 | if (prev_rp_info && json_rp_rows) | |
1070 | json_object_object_add( | |
1071 | json, | |
1072 | inet_ntoa(prev_rp_info->rp.rpf_addr.u.prefix4), | |
1073 | json_rp_rows); | |
1074 | ||
9d303b37 DL |
1075 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
1076 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 1077 | json_object_free(json); |
1078 | } | |
00d07c6f | 1079 | } |
cba44481 | 1080 | |
fec883d9 | 1081 | void pim_resolve_rp_nh(struct pim_instance *pim) |
cba44481 | 1082 | { |
d62a17ae | 1083 | struct listnode *node = NULL; |
1084 | struct rp_info *rp_info = NULL; | |
1085 | struct nexthop *nh_node = NULL; | |
1086 | struct prefix nht_p; | |
1087 | struct pim_nexthop_cache pnc; | |
1088 | struct pim_neighbor *nbr = NULL; | |
1089 | ||
d9c9a9ee | 1090 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 1091 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
1092 | continue; | |
1093 | ||
1094 | nht_p.family = AF_INET; | |
1095 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
1096 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
1097 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 | 1098 | if (!pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, |
25bdac42 | 1099 | &pnc)) |
cb9c7c50 DS |
1100 | continue; |
1101 | ||
1102 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
1103 | if (nh_node->gate.ipv4.s_addr != 0) | |
1104 | continue; | |
1105 | ||
1106 | struct interface *ifp1 = if_lookup_by_index( | |
fec883d9 | 1107 | nh_node->ifindex, pim->vrf_id); |
cb9c7c50 DS |
1108 | nbr = pim_neighbor_find_if(ifp1); |
1109 | if (!nbr) | |
1110 | continue; | |
1111 | ||
1112 | nh_node->gate.ipv4 = nbr->source_addr; | |
1113 | if (PIM_DEBUG_TRACE) { | |
1114 | char str[PREFIX_STRLEN]; | |
1115 | char str1[INET_ADDRSTRLEN]; | |
1116 | pim_inet4_dump("<nht_nbr?>", nbr->source_addr, | |
1117 | str1, sizeof(str1)); | |
1118 | pim_addr_dump("<nht_addr?>", &nht_p, str, | |
1119 | sizeof(str)); | |
1120 | zlog_debug( | |
1121 | "%s: addr %s new nexthop addr %s interface %s", | |
1122 | __PRETTY_FUNCTION__, str, str1, | |
1123 | ifp1->name); | |
d62a17ae | 1124 | } |
1125 | } | |
1126 | } | |
cba44481 | 1127 | } |