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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) | |
996c9314 LB |
150 | zlog_debug( |
151 | "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 | 157 | if (pim->rp_list) |
affe9e99 | 158 | list_delete_and_null(&pim->rp_list); |
36d6bd7d DS |
159 | } |
160 | ||
dfe43e25 DW |
161 | /* |
162 | * Given an RP's prefix-list, return the RP's rp_info for that prefix-list | |
163 | */ | |
d9c9a9ee DS |
164 | static struct rp_info *pim_rp_find_prefix_list(struct pim_instance *pim, |
165 | struct in_addr rp, | |
d62a17ae | 166 | const char *plist) |
36d6bd7d | 167 | { |
d62a17ae | 168 | struct listnode *node; |
169 | struct rp_info *rp_info; | |
170 | ||
d9c9a9ee | 171 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 172 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
173 | && rp_info->plist && strcmp(rp_info->plist, plist) == 0) { | |
174 | return rp_info; | |
175 | } | |
176 | } | |
177 | ||
178 | return NULL; | |
36d6bd7d DS |
179 | } |
180 | ||
dfe43e25 DW |
181 | /* |
182 | * Return true if plist is used by any rp_info | |
183 | */ | |
d9c9a9ee | 184 | static int pim_rp_prefix_list_used(struct pim_instance *pim, const char *plist) |
dfe43e25 | 185 | { |
d62a17ae | 186 | struct listnode *node; |
187 | struct rp_info *rp_info; | |
188 | ||
d9c9a9ee | 189 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 190 | if (rp_info->plist && strcmp(rp_info->plist, plist) == 0) { |
191 | return 1; | |
192 | } | |
193 | } | |
194 | ||
195 | return 0; | |
dfe43e25 DW |
196 | } |
197 | ||
198 | /* | |
d62a17ae | 199 | * Given an RP's address, return the RP's rp_info that is an exact match for |
200 | * 'group' | |
dfe43e25 | 201 | */ |
d9c9a9ee DS |
202 | static struct rp_info *pim_rp_find_exact(struct pim_instance *pim, |
203 | struct in_addr rp, | |
d62a17ae | 204 | struct prefix *group) |
36d6bd7d | 205 | { |
d62a17ae | 206 | struct listnode *node; |
207 | struct rp_info *rp_info; | |
36d6bd7d | 208 | |
d9c9a9ee | 209 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 210 | if (rp.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr |
211 | && prefix_same(&rp_info->group, group)) | |
212 | return rp_info; | |
213 | } | |
54b97c74 | 214 | |
d62a17ae | 215 | return NULL; |
36d6bd7d DS |
216 | } |
217 | ||
dfe43e25 DW |
218 | /* |
219 | * Given a group, return the rp_info for that group | |
220 | */ | |
d9c9a9ee DS |
221 | static struct rp_info *pim_rp_find_match_group(struct pim_instance *pim, |
222 | struct prefix *group) | |
36d6bd7d | 223 | { |
d62a17ae | 224 | struct listnode *node; |
b77b1550 | 225 | struct rp_info *best = NULL; |
d62a17ae | 226 | struct rp_info *rp_info; |
227 | struct prefix_list *plist; | |
b77b1550 | 228 | struct prefix *p, *bp; |
89b68082 | 229 | struct route_node *rn; |
d62a17ae | 230 | |
4646b86a | 231 | bp = NULL; |
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 | ||
996c9314 LB |
236 | if (prefix_list_apply_which_prefix(plist, &p, group) |
237 | == PREFIX_DENY) | |
b77b1550 DS |
238 | continue; |
239 | ||
240 | if (!best) { | |
241 | best = rp_info; | |
242 | bp = p; | |
243 | continue; | |
244 | } | |
245 | ||
4646b86a | 246 | if (bp && bp->prefixlen < p->prefixlen) { |
b77b1550 DS |
247 | best = rp_info; |
248 | bp = p; | |
249 | } | |
d62a17ae | 250 | } |
251 | } | |
252 | ||
89b68082 DS |
253 | rn = route_node_match(pim->rp_table, group); |
254 | if (!rn) { | |
996c9314 LB |
255 | zlog_err( |
256 | "%s: BUG We should have found default group information\n", | |
257 | __PRETTY_FUNCTION__); | |
89b68082 DS |
258 | return best; |
259 | } | |
260 | ||
261 | rp_info = rn->info; | |
262 | if (PIM_DEBUG_TRACE) { | |
263 | char buf[PREFIX_STRLEN]; | |
264 | ||
265 | route_unlock_node(rn); | |
996c9314 LB |
266 | zlog_debug("Lookedup: %p for rp_info: %p(%s) Lock: %d", rn, |
267 | rp_info, | |
89b68082 DS |
268 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
269 | rn->lock); | |
270 | } | |
271 | ||
272 | if (!best) | |
273 | return rp_info; | |
274 | ||
275 | if (rp_info->group.prefixlen < best->group.prefixlen) | |
276 | best = rp_info; | |
277 | ||
b77b1550 | 278 | return best; |
36d6bd7d | 279 | } |
75a26779 | 280 | |
dfe43e25 DW |
281 | /* |
282 | * When the user makes "ip pim rp" configuration changes or if they change the | |
283 | * prefix-list(s) used by these statements we must tickle the upstream state | |
284 | * for each group to make them re-lookup who their RP should be. | |
285 | * | |
286 | * This is a placeholder function for now. | |
287 | */ | |
472ad383 | 288 | static void pim_rp_refresh_group_to_rp_mapping(struct pim_instance *pim) |
dfe43e25 | 289 | { |
472ad383 | 290 | pim_msdp_i_am_rp_changed(pim); |
dfe43e25 DW |
291 | } |
292 | ||
d9c9a9ee DS |
293 | void pim_rp_prefix_list_update(struct pim_instance *pim, |
294 | struct prefix_list *plist) | |
dfe43e25 | 295 | { |
d62a17ae | 296 | struct listnode *node; |
297 | struct rp_info *rp_info; | |
298 | int refresh_needed = 0; | |
299 | ||
d9c9a9ee | 300 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 301 | if (rp_info->plist |
302 | && strcmp(rp_info->plist, prefix_list_name(plist)) == 0) { | |
303 | refresh_needed = 1; | |
304 | break; | |
305 | } | |
306 | } | |
307 | ||
308 | if (refresh_needed) | |
472ad383 | 309 | pim_rp_refresh_group_to_rp_mapping(pim); |
dfe43e25 DW |
310 | } |
311 | ||
d62a17ae | 312 | static int pim_rp_check_interface_addrs(struct rp_info *rp_info, |
313 | struct pim_interface *pim_ifp) | |
7176984f | 314 | { |
d62a17ae | 315 | struct listnode *node; |
316 | struct pim_secondary_addr *sec_addr; | |
7176984f | 317 | |
d62a17ae | 318 | if (pim_ifp->primary_address.s_addr |
319 | == rp_info->rp.rpf_addr.u.prefix4.s_addr) | |
320 | return 1; | |
7176984f | 321 | |
d62a17ae | 322 | if (!pim_ifp->sec_addr_list) { |
323 | return 0; | |
324 | } | |
7176984f | 325 | |
d62a17ae | 326 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->sec_addr_list, node, sec_addr)) { |
327 | if (prefix_same(&sec_addr->addr, &rp_info->rp.rpf_addr)) { | |
328 | return 1; | |
329 | } | |
330 | } | |
7176984f | 331 | |
d62a17ae | 332 | return 0; |
7176984f | 333 | } |
334 | ||
fec883d9 DS |
335 | static void pim_rp_check_interfaces(struct pim_instance *pim, |
336 | struct rp_info *rp_info) | |
00d07c6f | 337 | { |
d62a17ae | 338 | struct interface *ifp; |
00d07c6f | 339 | |
d62a17ae | 340 | rp_info->i_am_rp = 0; |
451fda4f | 341 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 342 | struct pim_interface *pim_ifp = ifp->info; |
00d07c6f | 343 | |
d62a17ae | 344 | if (!pim_ifp) |
345 | continue; | |
00d07c6f | 346 | |
d62a17ae | 347 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { |
348 | rp_info->i_am_rp = 1; | |
349 | } | |
350 | } | |
00d07c6f DS |
351 | } |
352 | ||
fec883d9 DS |
353 | int pim_rp_new(struct pim_instance *pim, const char *rp, |
354 | const char *group_range, const char *plist) | |
75a26779 | 355 | { |
d62a17ae | 356 | int result = 0; |
357 | struct rp_info *rp_info; | |
358 | struct rp_info *rp_all; | |
359 | struct prefix group_all; | |
360 | struct listnode *node, *nnode; | |
361 | struct rp_info *tmp_rp_info; | |
362 | char buffer[BUFSIZ]; | |
363 | struct prefix nht_p; | |
364 | struct pim_nexthop_cache pnc; | |
89b68082 | 365 | struct route_node *rn; |
d62a17ae | 366 | |
367 | rp_info = XCALLOC(MTYPE_PIM_RP, sizeof(*rp_info)); | |
368 | if (!rp_info) | |
369 | return PIM_MALLOC_FAIL; | |
370 | ||
371 | if (group_range == NULL) | |
372 | result = str2prefix("224.0.0.0/4", &rp_info->group); | |
373 | else | |
374 | result = str2prefix(group_range, &rp_info->group); | |
375 | ||
376 | if (!result) { | |
377 | XFREE(MTYPE_PIM_RP, rp_info); | |
378 | return PIM_GROUP_BAD_ADDRESS; | |
379 | } | |
380 | ||
381 | rp_info->rp.rpf_addr.family = AF_INET; | |
382 | rp_info->rp.rpf_addr.prefixlen = IPV4_MAX_PREFIXLEN; | |
383 | result = inet_pton(rp_info->rp.rpf_addr.family, rp, | |
384 | &rp_info->rp.rpf_addr.u.prefix4); | |
385 | ||
386 | if (result <= 0) { | |
387 | XFREE(MTYPE_PIM_RP, rp_info); | |
388 | return PIM_RP_BAD_ADDRESS; | |
389 | } | |
390 | ||
391 | if (plist) { | |
392 | /* | |
393 | * Return if the prefix-list is already configured for this RP | |
394 | */ | |
d9c9a9ee | 395 | if (pim_rp_find_prefix_list(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 396 | plist)) { |
397 | XFREE(MTYPE_PIM_RP, rp_info); | |
398 | return PIM_SUCCESS; | |
399 | } | |
400 | ||
401 | /* | |
402 | * Barf if the prefix-list is already configured for an RP | |
403 | */ | |
d9c9a9ee | 404 | if (pim_rp_prefix_list_used(pim, plist)) { |
d62a17ae | 405 | XFREE(MTYPE_PIM_RP, rp_info); |
406 | return PIM_RP_PFXLIST_IN_USE; | |
407 | } | |
408 | ||
409 | /* | |
410 | * Free any existing rp_info entries for this RP | |
411 | */ | |
d9c9a9ee | 412 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 413 | tmp_rp_info)) { |
414 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr | |
415 | == tmp_rp_info->rp.rpf_addr.u.prefix4.s_addr) { | |
416 | if (tmp_rp_info->plist) | |
fec883d9 | 417 | pim_rp_del(pim, rp, NULL, |
d62a17ae | 418 | tmp_rp_info->plist); |
419 | else | |
420 | pim_rp_del( | |
fec883d9 | 421 | pim, rp, |
d62a17ae | 422 | prefix2str(&tmp_rp_info->group, |
423 | buffer, BUFSIZ), | |
424 | NULL); | |
425 | } | |
426 | } | |
427 | ||
428 | rp_info->plist = XSTRDUP(MTYPE_PIM_FILTER_NAME, plist); | |
429 | } else { | |
89b68082 | 430 | |
2e8345c1 DS |
431 | if (!str2prefix("224.0.0.0/4", &group_all)) { |
432 | XFREE(MTYPE_PIM_RP, rp_info); | |
433 | return PIM_GROUP_BAD_ADDRESS; | |
434 | } | |
d9c9a9ee | 435 | rp_all = pim_rp_find_match_group(pim, &group_all); |
d62a17ae | 436 | |
437 | /* | |
438 | * Barf if group is a non-multicast subnet | |
439 | */ | |
440 | if (!prefix_match(&rp_all->group, &rp_info->group)) { | |
441 | XFREE(MTYPE_PIM_RP, rp_info); | |
442 | return PIM_GROUP_BAD_ADDRESS; | |
443 | } | |
444 | ||
445 | /* | |
446 | * Remove any prefix-list rp_info entries for this RP | |
447 | */ | |
d9c9a9ee | 448 | for (ALL_LIST_ELEMENTS(pim->rp_list, node, nnode, |
d62a17ae | 449 | tmp_rp_info)) { |
450 | if (tmp_rp_info->plist | |
451 | && rp_info->rp.rpf_addr.u.prefix4.s_addr | |
452 | == tmp_rp_info->rp.rpf_addr.u.prefix4 | |
453 | .s_addr) { | |
fec883d9 | 454 | pim_rp_del(pim, rp, NULL, tmp_rp_info->plist); |
d62a17ae | 455 | } |
456 | } | |
457 | ||
458 | /* | |
459 | * Take over the 224.0.0.0/4 group if the rp is INADDR_NONE | |
460 | */ | |
461 | if (prefix_same(&rp_all->group, &rp_info->group) | |
462 | && pim_rpf_addr_is_inaddr_none(&rp_all->rp)) { | |
463 | rp_all->rp.rpf_addr = rp_info->rp.rpf_addr; | |
464 | XFREE(MTYPE_PIM_RP, rp_info); | |
465 | ||
466 | /* Register addr with Zebra NHT */ | |
467 | nht_p.family = AF_INET; | |
468 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
469 | nht_p.u.prefix4 = | |
470 | rp_all->rp.rpf_addr.u.prefix4; // RP address | |
3d225d48 | 471 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 472 | char buf[PREFIX2STR_BUFFER]; |
473 | char buf1[PREFIX2STR_BUFFER]; | |
474 | prefix2str(&nht_p, buf, sizeof(buf)); | |
475 | prefix2str(&rp_all->group, buf1, sizeof(buf1)); | |
476 | zlog_debug( | |
477 | "%s: NHT Register rp_all addr %s grp %s ", | |
478 | __PRETTY_FUNCTION__, buf, buf1); | |
479 | } | |
480 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
481 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_all, |
482 | &pnc)) { | |
cb9c7c50 | 483 | if (!pim_ecmp_nexthop_search( |
fec883d9 | 484 | pim, &pnc, |
25b787a2 DS |
485 | &rp_all->rp.source_nexthop, &nht_p, |
486 | &rp_all->group, 1)) | |
d62a17ae | 487 | return PIM_RP_NO_PATH; |
488 | } else { | |
489 | if (pim_nexthop_lookup( | |
d9c9a9ee | 490 | pim, &rp_all->rp.source_nexthop, |
d62a17ae | 491 | rp_all->rp.rpf_addr.u.prefix4, 1) |
492 | != 0) | |
493 | return PIM_RP_NO_PATH; | |
494 | } | |
fec883d9 | 495 | pim_rp_check_interfaces(pim, rp_all); |
472ad383 | 496 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 497 | return PIM_SUCCESS; |
498 | } | |
499 | ||
500 | /* | |
501 | * Return if the group is already configured for this RP | |
502 | */ | |
d9c9a9ee | 503 | if (pim_rp_find_exact(pim, rp_info->rp.rpf_addr.u.prefix4, |
d62a17ae | 504 | &rp_info->group)) { |
505 | XFREE(MTYPE_PIM_RP, rp_info); | |
506 | return PIM_SUCCESS; | |
507 | } | |
508 | ||
509 | /* | |
510 | * Barf if this group is already covered by some other RP | |
511 | */ | |
d9c9a9ee | 512 | tmp_rp_info = pim_rp_find_match_group(pim, &rp_info->group); |
d62a17ae | 513 | |
514 | if (tmp_rp_info) { | |
515 | if (tmp_rp_info->plist) { | |
516 | XFREE(MTYPE_PIM_RP, rp_info); | |
517 | return PIM_GROUP_PFXLIST_OVERLAP; | |
518 | } else { | |
519 | /* | |
520 | * If the only RP that covers this group is an | |
521 | * RP configured for | |
522 | * 224.0.0.0/4 that is fine, ignore that one. | |
523 | * For all others | |
524 | * though we must return PIM_GROUP_OVERLAP | |
525 | */ | |
89b68082 DS |
526 | if (prefix_same(&rp_info->group, |
527 | &tmp_rp_info->group)) { | |
d62a17ae | 528 | XFREE(MTYPE_PIM_RP, rp_info); |
529 | return PIM_GROUP_OVERLAP; | |
530 | } | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
d9c9a9ee | 535 | listnode_add_sort(pim->rp_list, rp_info); |
89b68082 DS |
536 | rn = route_node_get(pim->rp_table, &rp_info->group); |
537 | if (!rn) { | |
538 | char buf[PREFIX_STRLEN]; | |
539 | zlog_err("Failure to get route node for pim->rp_table: %s", | |
540 | prefix2str(&rp_info->group, buf, sizeof(buf))); | |
541 | return PIM_MALLOC_FAIL; | |
542 | } | |
543 | rn->info = rp_info; | |
544 | ||
545 | if (PIM_DEBUG_TRACE) { | |
546 | char buf[PREFIX_STRLEN]; | |
547 | ||
996c9314 LB |
548 | zlog_debug("Allocated: %p for rp_info: %p(%s) Lock: %d", rn, |
549 | rp_info, | |
89b68082 DS |
550 | prefix2str(&rp_info->group, buf, sizeof(buf)), |
551 | rn->lock); | |
552 | } | |
d62a17ae | 553 | |
554 | /* Register addr with Zebra NHT */ | |
555 | nht_p.family = AF_INET; | |
556 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
557 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 558 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 559 | char buf[PREFIX2STR_BUFFER]; |
560 | char buf1[PREFIX2STR_BUFFER]; | |
561 | prefix2str(&nht_p, buf, sizeof(buf)); | |
562 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
563 | zlog_debug("%s: NHT Register RP addr %s grp %s with Zebra ", | |
564 | __PRETTY_FUNCTION__, buf, buf1); | |
565 | } | |
566 | ||
567 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
568 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) { |
569 | if (!pim_ecmp_nexthop_search(pim, &pnc, | |
25b787a2 | 570 | &rp_info->rp.source_nexthop, |
cb9c7c50 | 571 | &nht_p, &rp_info->group, 1)) |
d62a17ae | 572 | return PIM_RP_NO_PATH; |
573 | } else { | |
d9c9a9ee | 574 | if (pim_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
d62a17ae | 575 | rp_info->rp.rpf_addr.u.prefix4, 1) |
576 | != 0) | |
577 | return PIM_RP_NO_PATH; | |
578 | } | |
579 | ||
fec883d9 | 580 | pim_rp_check_interfaces(pim, rp_info); |
472ad383 | 581 | pim_rp_refresh_group_to_rp_mapping(pim); |
d62a17ae | 582 | return PIM_SUCCESS; |
75a26779 DS |
583 | } |
584 | ||
fec883d9 DS |
585 | int pim_rp_del(struct pim_instance *pim, const char *rp, |
586 | const char *group_range, const char *plist) | |
75a26779 | 587 | { |
d62a17ae | 588 | struct prefix group; |
589 | struct in_addr rp_addr; | |
590 | struct prefix g_all; | |
591 | struct rp_info *rp_info; | |
592 | struct rp_info *rp_all; | |
593 | int result; | |
594 | struct prefix nht_p; | |
89b68082 DS |
595 | struct route_node *rn; |
596 | bool was_plist = false; | |
d62a17ae | 597 | |
598 | if (group_range == NULL) | |
599 | result = str2prefix("224.0.0.0/4", &group); | |
600 | else | |
601 | result = str2prefix(group_range, &group); | |
602 | ||
603 | if (!result) | |
604 | return PIM_GROUP_BAD_ADDRESS; | |
605 | ||
606 | result = inet_pton(AF_INET, rp, &rp_addr); | |
607 | if (result <= 0) | |
608 | return PIM_RP_BAD_ADDRESS; | |
609 | ||
610 | if (plist) | |
d9c9a9ee | 611 | rp_info = pim_rp_find_prefix_list(pim, rp_addr, plist); |
d62a17ae | 612 | else |
d9c9a9ee | 613 | rp_info = pim_rp_find_exact(pim, rp_addr, &group); |
d62a17ae | 614 | |
615 | if (!rp_info) | |
616 | return PIM_RP_NOT_FOUND; | |
617 | ||
618 | if (rp_info->plist) { | |
619 | XFREE(MTYPE_PIM_FILTER_NAME, rp_info->plist); | |
620 | rp_info->plist = NULL; | |
89b68082 | 621 | was_plist = true; |
d62a17ae | 622 | } |
623 | ||
624 | /* Deregister addr with Zebra NHT */ | |
625 | nht_p.family = AF_INET; | |
626 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
627 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 628 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 629 | char buf[PREFIX2STR_BUFFER]; |
630 | prefix2str(&nht_p, buf, sizeof(buf)); | |
631 | zlog_debug("%s: Deregister RP addr %s with Zebra ", | |
632 | __PRETTY_FUNCTION__, buf); | |
633 | } | |
fec883d9 | 634 | pim_delete_tracked_nexthop(pim, &nht_p, NULL, rp_info); |
d62a17ae | 635 | |
e691f179 DS |
636 | if (!str2prefix("224.0.0.0/4", &g_all)) |
637 | return PIM_RP_BAD_ADDRESS; | |
638 | ||
d9c9a9ee | 639 | rp_all = pim_rp_find_match_group(pim, &g_all); |
d62a17ae | 640 | |
641 | if (rp_all == rp_info) { | |
642 | rp_all->rp.rpf_addr.family = AF_INET; | |
643 | rp_all->rp.rpf_addr.u.prefix4.s_addr = INADDR_NONE; | |
644 | rp_all->i_am_rp = 0; | |
645 | return PIM_SUCCESS; | |
646 | } | |
647 | ||
d9c9a9ee | 648 | listnode_delete(pim->rp_list, rp_info); |
89b68082 DS |
649 | |
650 | if (!was_plist) { | |
651 | rn = route_node_get(pim->rp_table, &rp_info->group); | |
652 | if (rn) { | |
653 | if (rn->info != rp_info) | |
654 | zlog_err("WTF matey"); | |
655 | ||
656 | if (PIM_DEBUG_TRACE) { | |
657 | char buf[PREFIX_STRLEN]; | |
658 | ||
996c9314 LB |
659 | zlog_debug( |
660 | "%s:Found for Freeing: %p for rp_info: %p(%s) Lock: %d", | |
661 | __PRETTY_FUNCTION__, rn, rp_info, | |
662 | prefix2str(&rp_info->group, buf, | |
663 | sizeof(buf)), | |
664 | rn->lock); | |
89b68082 DS |
665 | } |
666 | rn->info = NULL; | |
667 | route_unlock_node(rn); | |
668 | route_unlock_node(rn); | |
669 | } | |
670 | } | |
671 | ||
472ad383 | 672 | pim_rp_refresh_group_to_rp_mapping(pim); |
093c928f DS |
673 | |
674 | XFREE(MTYPE_PIM_RP, rp_info); | |
d62a17ae | 675 | return PIM_SUCCESS; |
75a26779 | 676 | } |
13afbd05 | 677 | |
fec883d9 | 678 | void pim_rp_setup(struct pim_instance *pim) |
13afbd05 | 679 | { |
d62a17ae | 680 | struct listnode *node; |
681 | struct rp_info *rp_info; | |
d62a17ae | 682 | struct prefix nht_p; |
683 | struct pim_nexthop_cache pnc; | |
684 | ||
d9c9a9ee | 685 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 686 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
687 | continue; | |
688 | ||
689 | nht_p.family = AF_INET; | |
690 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
691 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
692 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
693 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
694 | pim_ecmp_nexthop_search(pim, &pnc, | |
cb9c7c50 DS |
695 | &rp_info->rp.source_nexthop, |
696 | &nht_p, &rp_info->group, 1); | |
697 | else { | |
3d225d48 | 698 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 699 | char buf[PREFIX2STR_BUFFER]; |
700 | prefix2str(&nht_p, buf, sizeof(buf)); | |
701 | zlog_debug( | |
702 | "%s: NHT Local Nexthop not found for RP %s ", | |
703 | __PRETTY_FUNCTION__, buf); | |
704 | } | |
5271457d | 705 | if (pim_nexthop_lookup( |
d9c9a9ee | 706 | pim, &rp_info->rp.source_nexthop, |
5271457d | 707 | rp_info->rp.rpf_addr.u.prefix4, 1) < 0) |
3d225d48 | 708 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 709 | zlog_debug( |
710 | "Unable to lookup nexthop for rp specified"); | |
d62a17ae | 711 | } |
712 | } | |
13afbd05 DS |
713 | } |
714 | ||
54b97c74 | 715 | /* |
7176984f | 716 | * Checks to see if we should elect ourself the actual RP when new if |
717 | * addresses are added against an interface. | |
54b97c74 | 718 | */ |
d62a17ae | 719 | void pim_rp_check_on_if_add(struct pim_interface *pim_ifp) |
54b97c74 | 720 | { |
d62a17ae | 721 | struct listnode *node; |
722 | struct rp_info *rp_info; | |
723 | bool i_am_rp_changed = false; | |
d9c9a9ee | 724 | struct pim_instance *pim = pim_ifp->pim; |
d62a17ae | 725 | |
d9c9a9ee | 726 | if (pim->rp_list == NULL) |
d62a17ae | 727 | return; |
728 | ||
d9c9a9ee | 729 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 730 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
731 | continue; | |
732 | ||
733 | /* if i_am_rp is already set nothing to be done (adding new | |
734 | * addresses | |
735 | * is not going to make a difference). */ | |
736 | if (rp_info->i_am_rp) { | |
737 | continue; | |
738 | } | |
739 | ||
740 | if (pim_rp_check_interface_addrs(rp_info, pim_ifp)) { | |
741 | i_am_rp_changed = true; | |
742 | rp_info->i_am_rp = 1; | |
3d225d48 | 743 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 744 | char rp[PREFIX_STRLEN]; |
745 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
746 | rp, sizeof(rp)); | |
747 | zlog_debug("%s: %s: i am rp", __func__, rp); | |
748 | } | |
749 | } | |
750 | } | |
751 | ||
752 | if (i_am_rp_changed) { | |
472ad383 | 753 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 754 | } |
7176984f | 755 | } |
36d6bd7d | 756 | |
7176984f | 757 | /* up-optimized re-evaluation of "i_am_rp". this is used when ifaddresses |
758 | * are removed. Removing numbers is an uncommon event in an active network | |
759 | * so I have made no attempt to optimize it. */ | |
fec883d9 | 760 | void pim_i_am_rp_re_evaluate(struct pim_instance *pim) |
7176984f | 761 | { |
d62a17ae | 762 | struct listnode *node; |
763 | struct rp_info *rp_info; | |
764 | bool i_am_rp_changed = false; | |
765 | int old_i_am_rp; | |
766 | ||
d9c9a9ee | 767 | if (pim->rp_list == NULL) |
d62a17ae | 768 | return; |
769 | ||
d9c9a9ee | 770 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 771 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
772 | continue; | |
773 | ||
774 | old_i_am_rp = rp_info->i_am_rp; | |
fec883d9 | 775 | pim_rp_check_interfaces(pim, rp_info); |
d62a17ae | 776 | |
777 | if (old_i_am_rp != rp_info->i_am_rp) { | |
778 | i_am_rp_changed = true; | |
3d225d48 | 779 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 780 | char rp[PREFIX_STRLEN]; |
781 | pim_addr_dump("<rp?>", &rp_info->rp.rpf_addr, | |
782 | rp, sizeof(rp)); | |
783 | if (rp_info->i_am_rp) { | |
784 | zlog_debug("%s: %s: i am rp", __func__, | |
785 | rp); | |
786 | } else { | |
787 | zlog_debug("%s: %s: i am no longer rp", | |
788 | __func__, rp); | |
789 | } | |
790 | } | |
791 | } | |
792 | } | |
793 | ||
794 | if (i_am_rp_changed) { | |
472ad383 | 795 | pim_msdp_i_am_rp_changed(pim); |
d62a17ae | 796 | } |
54b97c74 DS |
797 | } |
798 | ||
799 | /* | |
800 | * I_am_RP(G) is true if the group-to-RP mapping indicates that | |
801 | * this router is the RP for the group. | |
802 | * | |
803 | * Since we only have static RP, all groups are part of this RP | |
804 | */ | |
d9c9a9ee | 805 | int pim_rp_i_am_rp(struct pim_instance *pim, struct in_addr group) |
54b97c74 | 806 | { |
d62a17ae | 807 | struct prefix g; |
808 | struct rp_info *rp_info; | |
36d6bd7d | 809 | |
d62a17ae | 810 | memset(&g, 0, sizeof(g)); |
811 | g.family = AF_INET; | |
812 | g.prefixlen = 32; | |
813 | g.u.prefix4 = group; | |
36d6bd7d | 814 | |
d9c9a9ee | 815 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 816 | |
d62a17ae | 817 | if (rp_info) |
818 | return rp_info->i_am_rp; | |
36d6bd7d | 819 | |
d62a17ae | 820 | return 0; |
54b97c74 DS |
821 | } |
822 | ||
71694057 DS |
823 | /* |
824 | * RP(G) | |
825 | * | |
826 | * Return the RP that the Group belongs too. | |
827 | */ | |
fec883d9 | 828 | struct pim_rpf *pim_rp_g(struct pim_instance *pim, struct in_addr group) |
71694057 | 829 | { |
d62a17ae | 830 | struct prefix g; |
831 | struct rp_info *rp_info; | |
832 | ||
833 | memset(&g, 0, sizeof(g)); | |
834 | g.family = AF_INET; | |
835 | g.prefixlen = 32; | |
836 | g.u.prefix4 = group; | |
837 | ||
d9c9a9ee | 838 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 839 | |
840 | if (rp_info) { | |
841 | struct prefix nht_p; | |
842 | struct pim_nexthop_cache pnc; | |
843 | /* Register addr with Zebra NHT */ | |
844 | nht_p.family = AF_INET; | |
845 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
846 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
3d225d48 | 847 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 848 | char buf[PREFIX2STR_BUFFER]; |
849 | char buf1[PREFIX2STR_BUFFER]; | |
850 | prefix2str(&nht_p, buf, sizeof(buf)); | |
851 | prefix2str(&rp_info->group, buf1, sizeof(buf1)); | |
852 | zlog_debug( | |
853 | "%s: NHT Register RP addr %s grp %s with Zebra", | |
854 | __PRETTY_FUNCTION__, buf, buf1); | |
855 | } | |
856 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 DS |
857 | if (pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, &pnc)) |
858 | pim_ecmp_nexthop_search(pim, &pnc, | |
d62a17ae | 859 | &rp_info->rp.source_nexthop, |
860 | &nht_p, &rp_info->group, 1); | |
cb9c7c50 | 861 | else { |
3d225d48 | 862 | if (PIM_DEBUG_PIM_NHT_RP) { |
d62a17ae | 863 | char buf[PREFIX2STR_BUFFER]; |
864 | char buf1[PREFIX2STR_BUFFER]; | |
865 | prefix2str(&nht_p, buf, sizeof(buf)); | |
866 | prefix2str(&g, buf1, sizeof(buf1)); | |
867 | zlog_debug( | |
868 | "%s: Nexthop cache not found for RP %s grp %s register with Zebra", | |
869 | __PRETTY_FUNCTION__, buf, buf1); | |
870 | } | |
bfc92019 | 871 | pim_rpf_set_refresh_time(pim); |
d9c9a9ee | 872 | pim_nexthop_lookup(pim, &rp_info->rp.source_nexthop, |
d62a17ae | 873 | rp_info->rp.rpf_addr.u.prefix4, 1); |
874 | } | |
875 | return (&rp_info->rp); | |
876 | } | |
877 | ||
878 | // About to Go Down | |
879 | return NULL; | |
71694057 DS |
880 | } |
881 | ||
8f5f5e91 DS |
882 | /* |
883 | * Set the upstream IP address we want to talk to based upon | |
884 | * the rp configured and the source address | |
885 | * | |
886 | * If we have don't have a RP configured and the source address is * | |
887 | * then return failure. | |
888 | * | |
889 | */ | |
d9c9a9ee DS |
890 | int pim_rp_set_upstream_addr(struct pim_instance *pim, struct in_addr *up, |
891 | struct in_addr source, struct in_addr group) | |
8f5f5e91 | 892 | { |
d62a17ae | 893 | struct rp_info *rp_info; |
894 | struct prefix g; | |
36d6bd7d | 895 | |
d62a17ae | 896 | memset(&g, 0, sizeof(g)); |
897 | g.family = AF_INET; | |
898 | g.prefixlen = 32; | |
899 | g.u.prefix4 = group; | |
36d6bd7d | 900 | |
d9c9a9ee | 901 | rp_info = pim_rp_find_match_group(pim, &g); |
36d6bd7d | 902 | |
d62a17ae | 903 | if ((pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
904 | && (source.s_addr == INADDR_ANY)) { | |
3d225d48 | 905 | if (PIM_DEBUG_PIM_NHT_RP) |
d62a17ae | 906 | zlog_debug("%s: Received a (*,G) with no RP configured", |
907 | __PRETTY_FUNCTION__); | |
908 | return 0; | |
909 | } | |
8f5f5e91 | 910 | |
d62a17ae | 911 | *up = (source.s_addr == INADDR_ANY) ? rp_info->rp.rpf_addr.u.prefix4 |
912 | : source; | |
8f5f5e91 | 913 | |
d62a17ae | 914 | return 1; |
8f5f5e91 | 915 | } |
75a26779 | 916 | |
0c8b717e DS |
917 | int pim_rp_config_write(struct pim_instance *pim, struct vty *vty, |
918 | const char *spaces) | |
75a26779 | 919 | { |
d62a17ae | 920 | struct listnode *node; |
921 | struct rp_info *rp_info; | |
922 | char rp_buffer[32]; | |
923 | char group_buffer[32]; | |
924 | int count = 0; | |
925 | ||
d9c9a9ee | 926 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 927 | if (pim_rpf_addr_is_inaddr_none(&rp_info->rp)) |
928 | continue; | |
929 | ||
930 | if (rp_info->plist) | |
0c8b717e | 931 | vty_out(vty, "%sip pim rp %s prefix-list %s\n", spaces, |
d62a17ae | 932 | inet_ntop(AF_INET, |
933 | &rp_info->rp.rpf_addr.u.prefix4, | |
934 | rp_buffer, 32), | |
935 | rp_info->plist); | |
936 | else | |
0c8b717e | 937 | vty_out(vty, "%sip pim rp %s %s\n", spaces, |
d62a17ae | 938 | inet_ntop(AF_INET, |
939 | &rp_info->rp.rpf_addr.u.prefix4, | |
940 | rp_buffer, 32), | |
941 | prefix2str(&rp_info->group, group_buffer, 32)); | |
942 | count++; | |
943 | } | |
944 | ||
945 | return count; | |
75a26779 DS |
946 | } |
947 | ||
fec883d9 DS |
948 | int pim_rp_check_is_my_ip_address(struct pim_instance *pim, |
949 | struct in_addr group, | |
d62a17ae | 950 | struct in_addr dest_addr) |
75a26779 | 951 | { |
d62a17ae | 952 | struct rp_info *rp_info; |
953 | struct prefix g; | |
954 | ||
955 | memset(&g, 0, sizeof(g)); | |
956 | g.family = AF_INET; | |
957 | g.prefixlen = 32; | |
958 | g.u.prefix4 = group; | |
959 | ||
d9c9a9ee | 960 | rp_info = pim_rp_find_match_group(pim, &g); |
d62a17ae | 961 | /* |
962 | * See if we can short-cut some? | |
963 | * This might not make sense if we ever leave a static RP | |
964 | * type of configuration. | |
965 | * Note - Premature optimization might bite our patooeys' here. | |
966 | */ | |
d9c9a9ee | 967 | if (I_am_RP(pim, group)) { |
d62a17ae | 968 | if (dest_addr.s_addr == rp_info->rp.rpf_addr.u.prefix4.s_addr) |
969 | return 1; | |
970 | } | |
971 | ||
fec883d9 | 972 | if (if_lookup_exact_address(&dest_addr, AF_INET, pim->vrf_id)) |
d62a17ae | 973 | return 1; |
974 | ||
975 | return 0; | |
75a26779 | 976 | } |
00d07c6f | 977 | |
64c86530 | 978 | void pim_rp_show_information(struct pim_instance *pim, struct vty *vty, |
d7c0a89a | 979 | uint8_t uj) |
00d07c6f | 980 | { |
d62a17ae | 981 | struct rp_info *rp_info; |
982 | struct rp_info *prev_rp_info = NULL; | |
983 | struct listnode *node; | |
984 | ||
985 | json_object *json = NULL; | |
986 | json_object *json_rp_rows = NULL; | |
987 | json_object *json_row = NULL; | |
988 | ||
989 | if (uj) | |
990 | json = json_object_new_object(); | |
991 | else | |
992 | vty_out(vty, | |
993 | "RP address group/prefix-list OIF I am RP\n"); | |
994 | ||
d9c9a9ee | 995 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 996 | if (!pim_rpf_addr_is_inaddr_none(&rp_info->rp)) { |
997 | char buf[48]; | |
998 | ||
999 | if (uj) { | |
1000 | /* | |
1001 | * If we have moved on to a new RP then add the | |
1002 | * entry for the previous RP | |
1003 | */ | |
1004 | if (prev_rp_info | |
1005 | && prev_rp_info->rp.rpf_addr.u.prefix4 | |
1006 | .s_addr | |
1007 | != rp_info->rp.rpf_addr.u.prefix4 | |
1008 | .s_addr) { | |
1009 | json_object_object_add( | |
1010 | json, | |
1011 | inet_ntoa(prev_rp_info->rp | |
1012 | .rpf_addr.u | |
1013 | .prefix4), | |
1014 | json_rp_rows); | |
1015 | json_rp_rows = NULL; | |
1016 | } | |
1017 | ||
1018 | if (!json_rp_rows) | |
1019 | json_rp_rows = json_object_new_array(); | |
1020 | ||
1021 | json_row = json_object_new_object(); | |
1022 | if (rp_info->rp.source_nexthop.interface) | |
1023 | json_object_string_add( | |
1024 | json_row, "outboundInterface", | |
1025 | rp_info->rp.source_nexthop | |
1026 | .interface->name); | |
1027 | ||
1028 | if (rp_info->i_am_rp) | |
1029 | json_object_boolean_true_add(json_row, | |
1030 | "iAmRP"); | |
1031 | ||
1032 | if (rp_info->plist) | |
1033 | json_object_string_add(json_row, | |
1034 | "prefixList", | |
1035 | rp_info->plist); | |
1036 | else | |
1037 | json_object_string_add( | |
1038 | json_row, "group", | |
1039 | prefix2str(&rp_info->group, buf, | |
1040 | 48)); | |
1041 | ||
1042 | json_object_array_add(json_rp_rows, json_row); | |
1043 | } else { | |
1044 | vty_out(vty, "%-15s ", | |
1045 | inet_ntoa(rp_info->rp.rpf_addr.u | |
1046 | .prefix4)); | |
1047 | ||
1048 | if (rp_info->plist) | |
1049 | vty_out(vty, "%-18s ", rp_info->plist); | |
1050 | else | |
1051 | vty_out(vty, "%-18s ", | |
1052 | prefix2str(&rp_info->group, buf, | |
1053 | 48)); | |
1054 | ||
1055 | if (rp_info->rp.source_nexthop.interface) | |
1056 | vty_out(vty, "%-10s ", | |
1057 | rp_info->rp.source_nexthop | |
1058 | .interface->name); | |
1059 | else | |
1060 | vty_out(vty, "%-10s ", "(Unknown)"); | |
1061 | ||
1062 | if (rp_info->i_am_rp) | |
1063 | vty_out(vty, "yes\n"); | |
1064 | else | |
1065 | vty_out(vty, "no\n"); | |
1066 | } | |
1067 | ||
1068 | prev_rp_info = rp_info; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | if (uj) { | |
1073 | if (prev_rp_info && json_rp_rows) | |
1074 | json_object_object_add( | |
1075 | json, | |
1076 | inet_ntoa(prev_rp_info->rp.rpf_addr.u.prefix4), | |
1077 | json_rp_rows); | |
1078 | ||
9d303b37 DL |
1079 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
1080 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 1081 | json_object_free(json); |
1082 | } | |
00d07c6f | 1083 | } |
cba44481 | 1084 | |
fec883d9 | 1085 | void pim_resolve_rp_nh(struct pim_instance *pim) |
cba44481 | 1086 | { |
d62a17ae | 1087 | struct listnode *node = NULL; |
1088 | struct rp_info *rp_info = NULL; | |
1089 | struct nexthop *nh_node = NULL; | |
1090 | struct prefix nht_p; | |
1091 | struct pim_nexthop_cache pnc; | |
1092 | struct pim_neighbor *nbr = NULL; | |
1093 | ||
d9c9a9ee | 1094 | for (ALL_LIST_ELEMENTS_RO(pim->rp_list, node, rp_info)) { |
d62a17ae | 1095 | if (rp_info->rp.rpf_addr.u.prefix4.s_addr == INADDR_NONE) |
1096 | continue; | |
1097 | ||
1098 | nht_p.family = AF_INET; | |
1099 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
1100 | nht_p.u.prefix4 = rp_info->rp.rpf_addr.u.prefix4; | |
1101 | memset(&pnc, 0, sizeof(struct pim_nexthop_cache)); | |
fec883d9 | 1102 | if (!pim_find_or_track_nexthop(pim, &nht_p, NULL, rp_info, |
25bdac42 | 1103 | &pnc)) |
cb9c7c50 DS |
1104 | continue; |
1105 | ||
1106 | for (nh_node = pnc.nexthop; nh_node; nh_node = nh_node->next) { | |
1107 | if (nh_node->gate.ipv4.s_addr != 0) | |
1108 | continue; | |
1109 | ||
1110 | struct interface *ifp1 = if_lookup_by_index( | |
fec883d9 | 1111 | nh_node->ifindex, pim->vrf_id); |
cb9c7c50 DS |
1112 | nbr = pim_neighbor_find_if(ifp1); |
1113 | if (!nbr) | |
1114 | continue; | |
1115 | ||
1116 | nh_node->gate.ipv4 = nbr->source_addr; | |
3d225d48 | 1117 | if (PIM_DEBUG_PIM_NHT_RP) { |
cb9c7c50 DS |
1118 | char str[PREFIX_STRLEN]; |
1119 | char str1[INET_ADDRSTRLEN]; | |
1120 | pim_inet4_dump("<nht_nbr?>", nbr->source_addr, | |
1121 | str1, sizeof(str1)); | |
1122 | pim_addr_dump("<nht_addr?>", &nht_p, str, | |
1123 | sizeof(str)); | |
1124 | zlog_debug( | |
1125 | "%s: addr %s new nexthop addr %s interface %s", | |
1126 | __PRETTY_FUNCTION__, str, str1, | |
1127 | ifp1->name); | |
d62a17ae | 1128 | } |
1129 | } | |
1130 | } | |
cba44481 | 1131 | } |