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eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_spf.c | |
3 | * The SPT algorithm | |
4 | * | |
5 | * Copyright (C) 2001,2002 Sampo Saaristo | |
d62a17ae | 6 | * Tampere University of Technology |
eb5d44eb | 7 | * Institute of Communications Engineering |
1b49e4f0 | 8 | * Copyright (C) 2017 Christian Franke <chris@opensourcerouting.org> |
eb5d44eb | 9 | * |
d62a17ae | 10 | * This program is free software; you can redistribute it and/or modify it |
11 | * under the terms of the GNU General Public Licenseas published by the Free | |
12 | * Software Foundation; either version 2 of the License, or (at your option) | |
eb5d44eb | 13 | * any later version. |
14 | * | |
d62a17ae | 15 | * This program is distributed in the hope that it will be useful,but WITHOUT |
16 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
eb5d44eb | 18 | * more details. |
896014f4 DL |
19 | * |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; see the file COPYING; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
eb5d44eb | 23 | */ |
24 | ||
eb5d44eb | 25 | #include <zebra.h> |
eb5d44eb | 26 | |
27 | #include "thread.h" | |
28 | #include "linklist.h" | |
29 | #include "vty.h" | |
30 | #include "log.h" | |
31 | #include "command.h" | |
32 | #include "memory.h" | |
33 | #include "prefix.h" | |
eb5d44eb | 34 | #include "if.h" |
35 | #include "table.h" | |
03f7e182 | 36 | #include "spf_backoff.h" |
321c1bbb | 37 | #include "srcdest_table.h" |
eb5d44eb | 38 | |
39 | #include "isis_constants.h" | |
40 | #include "isis_common.h" | |
3f045a08 | 41 | #include "isis_flags.h" |
eb5d44eb | 42 | #include "isisd.h" |
43 | #include "isis_misc.h" | |
44 | #include "isis_adjacency.h" | |
45 | #include "isis_circuit.h" | |
eb5d44eb | 46 | #include "isis_pdu.h" |
47 | #include "isis_lsp.h" | |
48 | #include "isis_dynhn.h" | |
49 | #include "isis_spf.h" | |
50 | #include "isis_route.h" | |
51 | #include "isis_csm.h" | |
2b67862c | 52 | #include "isis_mt.h" |
841791b6 | 53 | #include "isis_tlvs.h" |
b30e837b | 54 | #include "fabricd.h" |
cbd8e49e | 55 | #include "isis_spf_private.h" |
eb5d44eb | 56 | |
1b49e4f0 CF |
57 | DEFINE_MTYPE_STATIC(ISISD, ISIS_SPF_RUN, "ISIS SPF Run Info"); |
58 | ||
af8ac8f9 CF |
59 | /* |
60 | * supports the given af ? | |
61 | */ | |
62 | static bool speaks(uint8_t *protocols, uint8_t count, int family) | |
63 | { | |
64 | for (uint8_t i = 0; i < count; i++) { | |
65 | if (family == AF_INET && protocols[i] == NLPID_IP) | |
66 | return true; | |
67 | if (family == AF_INET6 && protocols[i] == NLPID_IPV6) | |
68 | return true; | |
69 | } | |
70 | return false; | |
71 | } | |
72 | ||
1b49e4f0 | 73 | struct isis_spf_run { |
d62a17ae | 74 | struct isis_area *area; |
75 | int level; | |
1b49e4f0 CF |
76 | }; |
77 | ||
eb5d44eb | 78 | /* 7.2.7 */ |
d62a17ae | 79 | static void remove_excess_adjs(struct list *adjs) |
eb5d44eb | 80 | { |
d62a17ae | 81 | struct listnode *node, *excess = NULL; |
82 | struct isis_adjacency *adj, *candidate = NULL; | |
83 | int comp; | |
84 | ||
85 | for (ALL_LIST_ELEMENTS_RO(adjs, node, adj)) { | |
86 | if (excess == NULL) | |
87 | excess = node; | |
88 | candidate = listgetdata(excess); | |
89 | ||
90 | if (candidate->sys_type < adj->sys_type) { | |
91 | excess = node; | |
92 | continue; | |
93 | } | |
94 | if (candidate->sys_type > adj->sys_type) | |
95 | continue; | |
f390d2c7 | 96 | |
d62a17ae | 97 | comp = memcmp(candidate->sysid, adj->sysid, ISIS_SYS_ID_LEN); |
98 | if (comp > 0) { | |
99 | excess = node; | |
100 | continue; | |
101 | } | |
102 | if (comp < 0) | |
103 | continue; | |
eb5d44eb | 104 | |
0849c75e | 105 | if (candidate->circuit->idx > adj->circuit->idx) { |
d62a17ae | 106 | excess = node; |
107 | continue; | |
108 | } | |
f390d2c7 | 109 | |
0849c75e | 110 | if (candidate->circuit->idx < adj->circuit->idx) |
d62a17ae | 111 | continue; |
f390d2c7 | 112 | |
d62a17ae | 113 | comp = memcmp(candidate->snpa, adj->snpa, ETH_ALEN); |
114 | if (comp > 0) { | |
115 | excess = node; | |
116 | continue; | |
117 | } | |
f390d2c7 | 118 | } |
f390d2c7 | 119 | |
d62a17ae | 120 | list_delete_node(adjs, excess); |
eb5d44eb | 121 | |
d62a17ae | 122 | return; |
eb5d44eb | 123 | } |
124 | ||
d62a17ae | 125 | static const char *vtype2string(enum vertextype vtype) |
eb5d44eb | 126 | { |
d62a17ae | 127 | switch (vtype) { |
128 | case VTYPE_PSEUDO_IS: | |
129 | return "pseudo_IS"; | |
d62a17ae | 130 | case VTYPE_PSEUDO_TE_IS: |
131 | return "pseudo_TE-IS"; | |
d62a17ae | 132 | case VTYPE_NONPSEUDO_IS: |
133 | return "IS"; | |
d62a17ae | 134 | case VTYPE_NONPSEUDO_TE_IS: |
135 | return "TE-IS"; | |
d62a17ae | 136 | case VTYPE_ES: |
137 | return "ES"; | |
d62a17ae | 138 | case VTYPE_IPREACH_INTERNAL: |
139 | return "IP internal"; | |
d62a17ae | 140 | case VTYPE_IPREACH_EXTERNAL: |
141 | return "IP external"; | |
d62a17ae | 142 | case VTYPE_IPREACH_TE: |
143 | return "IP TE"; | |
d62a17ae | 144 | case VTYPE_IP6REACH_INTERNAL: |
145 | return "IP6 internal"; | |
d62a17ae | 146 | case VTYPE_IP6REACH_EXTERNAL: |
147 | return "IP6 external"; | |
d62a17ae | 148 | default: |
149 | return "UNKNOWN"; | |
150 | } | |
151 | return NULL; /* Not reached */ | |
eb5d44eb | 152 | } |
153 | ||
d4cff91a | 154 | const char *vid2string(struct isis_vertex *vertex, char *buff, int size) |
eb5d44eb | 155 | { |
d62a17ae | 156 | if (VTYPE_IS(vertex->type) || VTYPE_ES(vertex->type)) { |
157 | return print_sys_hostname(vertex->N.id); | |
158 | } | |
159 | ||
160 | if (VTYPE_IP(vertex->type)) { | |
321c1bbb CF |
161 | srcdest2str(&vertex->N.ip.dest, |
162 | &vertex->N.ip.src, | |
163 | buff, size); | |
d62a17ae | 164 | return buff; |
165 | } | |
166 | ||
167 | return "UNKNOWN"; | |
eb5d44eb | 168 | } |
169 | ||
686afe9f | 170 | static struct isis_vertex *isis_vertex_new(struct isis_spftree *spftree, |
f6ae63ca | 171 | void *id, |
ae9c9aba | 172 | enum vertextype vtype) |
eb919f07 CF |
173 | { |
174 | struct isis_vertex *vertex; | |
175 | ||
176 | vertex = XCALLOC(MTYPE_ISIS_VERTEX, sizeof(struct isis_vertex)); | |
177 | ||
f6ae63ca | 178 | isis_vertex_id_init(vertex, id, vtype); |
d62a17ae | 179 | |
180 | vertex->Adj_N = list_new(); | |
181 | vertex->parents = list_new(); | |
d62a17ae | 182 | |
686afe9f CF |
183 | if (spftree->hopcount_metric) { |
184 | vertex->firsthops = hash_create(isis_vertex_queue_hash_key, | |
185 | isis_vertex_queue_hash_cmp, | |
186 | NULL); | |
187 | } | |
188 | ||
d62a17ae | 189 | return vertex; |
eb5d44eb | 190 | } |
191 | ||
d62a17ae | 192 | static void isis_vertex_adj_del(struct isis_vertex *vertex, |
193 | struct isis_adjacency *adj) | |
3f045a08 | 194 | { |
d62a17ae | 195 | struct listnode *node, *nextnode; |
196 | if (!vertex) | |
197 | return; | |
198 | for (node = listhead(vertex->Adj_N); node; node = nextnode) { | |
199 | nextnode = listnextnode(node); | |
200 | if (listgetdata(node) == adj) | |
201 | list_delete_node(vertex->Adj_N, node); | |
202 | } | |
203 | return; | |
3f045a08 JB |
204 | } |
205 | ||
d62a17ae | 206 | struct isis_spftree *isis_spftree_new(struct isis_area *area) |
3f045a08 | 207 | { |
d62a17ae | 208 | struct isis_spftree *tree; |
209 | ||
210 | tree = XCALLOC(MTYPE_ISIS_SPFTREE, sizeof(struct isis_spftree)); | |
d62a17ae | 211 | |
bded4060 CF |
212 | isis_vertex_queue_init(&tree->tents, "IS-IS SPF tents", true); |
213 | isis_vertex_queue_init(&tree->paths, "IS-IS SPF paths", false); | |
321c1bbb | 214 | tree->route_table = srcdest_table_init(); |
d62a17ae | 215 | tree->area = area; |
216 | tree->last_run_timestamp = 0; | |
3dca3c8c | 217 | tree->last_run_monotime = 0; |
d62a17ae | 218 | tree->last_run_duration = 0; |
219 | tree->runcount = 0; | |
220 | return tree; | |
3f045a08 JB |
221 | } |
222 | ||
d62a17ae | 223 | void isis_spftree_del(struct isis_spftree *spftree) |
eb5d44eb | 224 | { |
eb919f07 CF |
225 | isis_vertex_queue_free(&spftree->tents); |
226 | isis_vertex_queue_free(&spftree->paths); | |
3dace42d CF |
227 | route_table_finish(spftree->route_table); |
228 | spftree->route_table = NULL; | |
eb5d44eb | 229 | |
3dace42d | 230 | XFREE(MTYPE_ISIS_SPFTREE, spftree); |
d62a17ae | 231 | return; |
eb5d44eb | 232 | } |
3f045a08 | 233 | |
d62a17ae | 234 | static void isis_spftree_adj_del(struct isis_spftree *spftree, |
235 | struct isis_adjacency *adj) | |
3f045a08 | 236 | { |
d62a17ae | 237 | struct listnode *node; |
eb919f07 | 238 | struct isis_vertex *v; |
d62a17ae | 239 | if (!adj) |
240 | return; | |
bded4060 | 241 | assert(!isis_vertex_queue_count(&spftree->tents)); |
eb919f07 CF |
242 | for (ALL_QUEUE_ELEMENTS_RO(&spftree->paths, node, v)) |
243 | isis_vertex_adj_del(v, adj); | |
d62a17ae | 244 | return; |
3f045a08 | 245 | } |
eb5d44eb | 246 | |
d62a17ae | 247 | void spftree_area_init(struct isis_area *area) |
eb5d44eb | 248 | { |
be985ba0 CF |
249 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
250 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
251 | if (!(area->is_type & level)) | |
252 | continue; | |
253 | if (area->spftree[tree][level - 1]) | |
254 | continue; | |
d62a17ae | 255 | |
be985ba0 CF |
256 | area->spftree[tree][level - 1] = isis_spftree_new(area); |
257 | } | |
d62a17ae | 258 | } |
eb5d44eb | 259 | } |
260 | ||
d62a17ae | 261 | void spftree_area_del(struct isis_area *area) |
eb5d44eb | 262 | { |
be985ba0 CF |
263 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
264 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
265 | if (!(area->is_type & level)) | |
266 | continue; | |
267 | if (!area->spftree[tree][level - 1]) | |
268 | continue; | |
d62a17ae | 269 | |
be985ba0 | 270 | isis_spftree_del(area->spftree[tree][level - 1]); |
d62a17ae | 271 | } |
272 | } | |
3f045a08 | 273 | } |
f390d2c7 | 274 | |
d62a17ae | 275 | void spftree_area_adj_del(struct isis_area *area, struct isis_adjacency *adj) |
3f045a08 | 276 | { |
be985ba0 CF |
277 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
278 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
279 | if (!(area->is_type & level)) | |
280 | continue; | |
281 | if (!area->spftree[tree][level - 1]) | |
282 | continue; | |
283 | isis_spftree_adj_del(area->spftree[tree][level - 1], | |
284 | adj); | |
285 | } | |
d62a17ae | 286 | } |
b30e837b CF |
287 | |
288 | if (fabricd_spftree(area) != NULL) | |
289 | isis_spftree_adj_del(fabricd_spftree(area), adj); | |
3f045a08 JB |
290 | } |
291 | ||
d62a17ae | 292 | /* |
293 | * Find the system LSP: returns the LSP in our LSP database | |
3f045a08 JB |
294 | * associated with the given system ID. |
295 | */ | |
d62a17ae | 296 | static struct isis_lsp *isis_root_system_lsp(struct isis_area *area, int level, |
d7c0a89a | 297 | uint8_t *sysid) |
3f045a08 | 298 | { |
d62a17ae | 299 | struct isis_lsp *lsp; |
d7c0a89a | 300 | uint8_t lspid[ISIS_SYS_ID_LEN + 2]; |
d62a17ae | 301 | |
302 | memcpy(lspid, sysid, ISIS_SYS_ID_LEN); | |
303 | LSP_PSEUDO_ID(lspid) = 0; | |
304 | LSP_FRAGMENT(lspid) = 0; | |
4bef0ec4 | 305 | lsp = lsp_search(&area->lspdb[level - 1], lspid); |
af8ac8f9 | 306 | if (lsp && lsp->hdr.rem_lifetime != 0) |
d62a17ae | 307 | return lsp; |
308 | return NULL; | |
eb5d44eb | 309 | } |
310 | ||
311 | /* | |
312 | * Add this IS to the root of SPT | |
313 | */ | |
d62a17ae | 314 | static struct isis_vertex *isis_spf_add_root(struct isis_spftree *spftree, |
d7c0a89a | 315 | uint8_t *sysid) |
eb5d44eb | 316 | { |
d62a17ae | 317 | struct isis_vertex *vertex; |
318 | struct isis_lsp *lsp; | |
eb5d44eb | 319 | #ifdef EXTREME_DEBUG |
321c1bbb | 320 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 321 | #endif /* EXTREME_DEBUG */ |
f390d2c7 | 322 | |
d62a17ae | 323 | lsp = isis_root_system_lsp(spftree->area, spftree->level, sysid); |
324 | if (lsp == NULL) | |
325 | zlog_warn("ISIS-Spf: could not find own l%d LSP!", | |
326 | spftree->level); | |
eb5d44eb | 327 | |
f6ae63ca | 328 | vertex = isis_vertex_new(spftree, sysid, |
9d303b37 DL |
329 | spftree->area->oldmetric |
330 | ? VTYPE_NONPSEUDO_IS | |
331 | : VTYPE_NONPSEUDO_TE_IS); | |
bded4060 | 332 | isis_vertex_queue_append(&spftree->paths, vertex); |
eb5d44eb | 333 | |
334 | #ifdef EXTREME_DEBUG | |
d62a17ae | 335 | zlog_debug("ISIS-Spf: added this IS %s %s depth %d dist %d to PATHS", |
336 | vtype2string(vertex->type), | |
337 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
338 | vertex->d_N); | |
eb5d44eb | 339 | #endif /* EXTREME_DEBUG */ |
340 | ||
d62a17ae | 341 | return vertex; |
eb5d44eb | 342 | } |
343 | ||
e3b78da8 | 344 | static void vertex_add_parent_firsthop(struct hash_bucket *bucket, void *arg) |
686afe9f CF |
345 | { |
346 | struct isis_vertex *vertex = arg; | |
e3b78da8 | 347 | struct isis_vertex *hop = bucket->data; |
686afe9f CF |
348 | |
349 | hash_get(vertex->firsthops, hop, hash_alloc_intern); | |
350 | } | |
351 | ||
352 | static void vertex_update_firsthops(struct isis_vertex *vertex, | |
353 | struct isis_vertex *parent) | |
354 | { | |
355 | if (vertex->d_N <= 2) | |
356 | hash_get(vertex->firsthops, vertex, hash_alloc_intern); | |
357 | ||
358 | if (vertex->d_N < 2 || !parent) | |
359 | return; | |
360 | ||
361 | hash_iterate(parent->firsthops, vertex_add_parent_firsthop, vertex); | |
362 | } | |
363 | ||
eb5d44eb | 364 | /* |
365 | * Add a vertex to TENT sorted by cost and by vertextype on tie break situation | |
366 | */ | |
d62a17ae | 367 | static struct isis_vertex *isis_spf_add2tent(struct isis_spftree *spftree, |
368 | enum vertextype vtype, void *id, | |
369 | uint32_t cost, int depth, | |
370 | struct isis_adjacency *adj, | |
371 | struct isis_vertex *parent) | |
eb5d44eb | 372 | { |
eb919f07 | 373 | struct isis_vertex *vertex; |
d62a17ae | 374 | struct listnode *node; |
375 | struct isis_adjacency *parent_adj; | |
321c1bbb | 376 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 377 | |
75750ccf EDP |
378 | vertex = isis_find_vertex(&spftree->paths, id, vtype); |
379 | if (vertex != NULL) { | |
380 | zlog_err( | |
381 | "%s: vertex %s of type %s already in PATH; check for sysId collisions with established neighbors", | |
382 | __func__, vid2string(vertex, buff, sizeof(buff)), | |
383 | vtype2string(vertex->type)); | |
384 | return NULL; | |
385 | } | |
386 | vertex = isis_find_vertex(&spftree->tents, id, vtype); | |
387 | if (vertex != NULL) { | |
388 | zlog_err( | |
389 | "%s: vertex %s of type %s already in TENT; check for sysId collisions with established neighbors", | |
390 | __func__, vid2string(vertex, buff, sizeof(buff)), | |
391 | vtype2string(vertex->type)); | |
392 | return NULL; | |
393 | } | |
394 | ||
686afe9f | 395 | vertex = isis_vertex_new(spftree, id, vtype); |
d62a17ae | 396 | vertex->d_N = cost; |
397 | vertex->depth = depth; | |
398 | ||
399 | if (parent) { | |
400 | listnode_add(vertex->parents, parent); | |
d62a17ae | 401 | } |
402 | ||
686afe9f CF |
403 | if (spftree->hopcount_metric) |
404 | vertex_update_firsthops(vertex, parent); | |
405 | ||
d62a17ae | 406 | if (parent && parent->Adj_N && listcount(parent->Adj_N) > 0) { |
407 | for (ALL_LIST_ELEMENTS_RO(parent->Adj_N, node, parent_adj)) | |
408 | listnode_add(vertex->Adj_N, parent_adj); | |
409 | } else if (adj) { | |
410 | listnode_add(vertex->Adj_N, adj); | |
411 | } | |
3f045a08 | 412 | |
f390d2c7 | 413 | #ifdef EXTREME_DEBUG |
d62a17ae | 414 | zlog_debug( |
415 | "ISIS-Spf: add to TENT %s %s %s depth %d dist %d adjcount %d", | |
416 | print_sys_hostname(vertex->N.id), vtype2string(vertex->type), | |
417 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
418 | vertex->d_N, listcount(vertex->Adj_N)); | |
eb5d44eb | 419 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 420 | |
eb919f07 | 421 | isis_vertex_queue_insert(&spftree->tents, vertex); |
d62a17ae | 422 | return vertex; |
423 | } | |
424 | ||
425 | static void isis_spf_add_local(struct isis_spftree *spftree, | |
426 | enum vertextype vtype, void *id, | |
427 | struct isis_adjacency *adj, uint32_t cost, | |
428 | struct isis_vertex *parent) | |
429 | { | |
430 | struct isis_vertex *vertex; | |
431 | ||
eb919f07 | 432 | vertex = isis_find_vertex(&spftree->tents, id, vtype); |
d62a17ae | 433 | |
434 | if (vertex) { | |
435 | /* C.2.5 c) */ | |
436 | if (vertex->d_N == cost) { | |
437 | if (adj) | |
438 | listnode_add(vertex->Adj_N, adj); | |
439 | /* d) */ | |
440 | if (listcount(vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
441 | remove_excess_adjs(vertex->Adj_N); | |
9d303b37 DL |
442 | if (parent && (listnode_lookup(vertex->parents, parent) |
443 | == NULL)) | |
d62a17ae | 444 | listnode_add(vertex->parents, parent); |
d62a17ae | 445 | return; |
446 | } else if (vertex->d_N < cost) { | |
447 | /* e) do nothing */ | |
448 | return; | |
449 | } else { /* vertex->d_N > cost */ | |
450 | /* f) */ | |
eb919f07 | 451 | isis_vertex_queue_delete(&spftree->tents, vertex); |
d62a17ae | 452 | isis_vertex_del(vertex); |
453 | } | |
f390d2c7 | 454 | } |
d62a17ae | 455 | |
456 | isis_spf_add2tent(spftree, vtype, id, cost, 1, adj, parent); | |
457 | return; | |
eb5d44eb | 458 | } |
459 | ||
d62a17ae | 460 | static void process_N(struct isis_spftree *spftree, enum vertextype vtype, |
461 | void *id, uint32_t dist, uint16_t depth, | |
462 | struct isis_vertex *parent) | |
eb5d44eb | 463 | { |
d62a17ae | 464 | struct isis_vertex *vertex; |
eb5d44eb | 465 | #ifdef EXTREME_DEBUG |
321c1bbb | 466 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 467 | #endif |
468 | ||
d62a17ae | 469 | assert(spftree && parent); |
470 | ||
b30e837b CF |
471 | if (spftree->hopcount_metric |
472 | && !VTYPE_IS(vtype)) | |
473 | return; | |
474 | ||
321c1bbb | 475 | struct prefix_pair p; |
af8ac8f9 | 476 | if (vtype >= VTYPE_IPREACH_INTERNAL) { |
321c1bbb CF |
477 | memcpy(&p, id, sizeof(p)); |
478 | apply_mask(&p.dest); | |
479 | apply_mask((struct prefix *)&p.src); | |
af8ac8f9 CF |
480 | id = &p; |
481 | } | |
482 | ||
d62a17ae | 483 | /* RFC3787 section 5.1 */ |
484 | if (spftree->area->newmetric == 1) { | |
485 | if (dist > MAX_WIDE_PATH_METRIC) | |
486 | return; | |
487 | } | |
488 | /* C.2.6 b) */ | |
489 | else if (spftree->area->oldmetric == 1) { | |
490 | if (dist > MAX_NARROW_PATH_METRIC) | |
491 | return; | |
492 | } | |
493 | ||
494 | /* c) */ | |
eb919f07 | 495 | vertex = isis_find_vertex(&spftree->paths, id, vtype); |
d62a17ae | 496 | if (vertex) { |
eb5d44eb | 497 | #ifdef EXTREME_DEBUG |
d62a17ae | 498 | zlog_debug( |
499 | "ISIS-Spf: process_N %s %s %s dist %d already found from PATH", | |
500 | print_sys_hostname(vertex->N.id), vtype2string(vtype), | |
501 | vid2string(vertex, buff, sizeof(buff)), dist); | |
eb5d44eb | 502 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 503 | assert(dist >= vertex->d_N); |
504 | return; | |
505 | } | |
506 | ||
eb919f07 | 507 | vertex = isis_find_vertex(&spftree->tents, id, vtype); |
d62a17ae | 508 | /* d) */ |
509 | if (vertex) { | |
510 | /* 1) */ | |
eb5d44eb | 511 | #ifdef EXTREME_DEBUG |
d62a17ae | 512 | zlog_debug( |
513 | "ISIS-Spf: process_N %s %s %s dist %d parent %s adjcount %d", | |
514 | print_sys_hostname(vertex->N.id), vtype2string(vtype), | |
515 | vid2string(vertex, buff, sizeof(buff)), dist, | |
516 | (parent ? print_sys_hostname(parent->N.id) : "null"), | |
517 | (parent ? listcount(parent->Adj_N) : 0)); | |
eb5d44eb | 518 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 519 | if (vertex->d_N == dist) { |
520 | struct listnode *node; | |
521 | struct isis_adjacency *parent_adj; | |
522 | for (ALL_LIST_ELEMENTS_RO(parent->Adj_N, node, | |
523 | parent_adj)) | |
524 | if (listnode_lookup(vertex->Adj_N, parent_adj) | |
525 | == NULL) | |
526 | listnode_add(vertex->Adj_N, parent_adj); | |
686afe9f CF |
527 | if (spftree->hopcount_metric) |
528 | vertex_update_firsthops(vertex, parent); | |
d62a17ae | 529 | /* 2) */ |
530 | if (listcount(vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
531 | remove_excess_adjs(vertex->Adj_N); | |
532 | if (listnode_lookup(vertex->parents, parent) == NULL) | |
533 | listnode_add(vertex->parents, parent); | |
d62a17ae | 534 | return; |
535 | } else if (vertex->d_N < dist) { | |
536 | return; | |
537 | /* 4) */ | |
538 | } else { | |
eb919f07 | 539 | isis_vertex_queue_delete(&spftree->tents, vertex); |
d62a17ae | 540 | isis_vertex_del(vertex); |
541 | } | |
f390d2c7 | 542 | } |
f390d2c7 | 543 | |
3f045a08 | 544 | #ifdef EXTREME_DEBUG |
d62a17ae | 545 | zlog_debug("ISIS-Spf: process_N add2tent %s %s dist %d parent %s", |
546 | print_sys_hostname(id), vtype2string(vtype), dist, | |
547 | (parent ? print_sys_hostname(parent->N.id) : "null")); | |
3f045a08 JB |
548 | #endif /* EXTREME_DEBUG */ |
549 | ||
d62a17ae | 550 | isis_spf_add2tent(spftree, vtype, id, dist, depth, NULL, parent); |
551 | return; | |
eb5d44eb | 552 | } |
553 | ||
554 | /* | |
555 | * C.2.6 Step 1 | |
556 | */ | |
d62a17ae | 557 | static int isis_spf_process_lsp(struct isis_spftree *spftree, |
558 | struct isis_lsp *lsp, uint32_t cost, | |
d7c0a89a | 559 | uint16_t depth, uint8_t *root_sysid, |
d62a17ae | 560 | struct isis_vertex *parent) |
eb5d44eb | 561 | { |
af8ac8f9 CF |
562 | bool pseudo_lsp = LSP_PSEUDO_ID(lsp->hdr.lsp_id); |
563 | struct listnode *fragnode = NULL; | |
d62a17ae | 564 | uint32_t dist; |
d62a17ae | 565 | enum vertextype vtype; |
d7c0a89a | 566 | static const uint8_t null_sysid[ISIS_SYS_ID_LEN]; |
af8ac8f9 | 567 | struct isis_mt_router_info *mt_router_info = NULL; |
321c1bbb | 568 | struct prefix_pair ip_info; |
af8ac8f9 CF |
569 | |
570 | if (!lsp->tlvs) | |
571 | return ISIS_OK; | |
d62a17ae | 572 | |
573 | if (spftree->mtid != ISIS_MT_IPV4_UNICAST) | |
af8ac8f9 CF |
574 | mt_router_info = isis_tlvs_lookup_mt_router_info(lsp->tlvs, |
575 | spftree->mtid); | |
d62a17ae | 576 | |
9d303b37 | 577 | if (!pseudo_lsp && (spftree->mtid == ISIS_MT_IPV4_UNICAST |
af8ac8f9 CF |
578 | && !speaks(lsp->tlvs->protocols_supported.protocols, |
579 | lsp->tlvs->protocols_supported.count, | |
580 | spftree->family)) | |
d62a17ae | 581 | && !mt_router_info) |
582 | return ISIS_OK; | |
eb5d44eb | 583 | |
39a275aa | 584 | /* RFC3787 section 4 SHOULD ignore overload bit in pseudo LSPs */ |
98c5bc15 CF |
585 | bool no_overload = (pseudo_lsp |
586 | || (spftree->mtid == ISIS_MT_IPV4_UNICAST | |
39a275aa | 587 | && !ISIS_MASK_LSP_OL_BIT(lsp->hdr.lsp_bits)) |
98c5bc15 | 588 | || (mt_router_info && !mt_router_info->overload)); |
39a275aa | 589 | |
f390d2c7 | 590 | lspfragloop: |
af8ac8f9 | 591 | if (lsp->hdr.seqno == 0) { |
d62a17ae | 592 | zlog_warn( |
593 | "isis_spf_process_lsp(): lsp with 0 seq_num - ignore"); | |
594 | return ISIS_WARNING; | |
595 | } | |
f390d2c7 | 596 | |
3f045a08 | 597 | #ifdef EXTREME_DEBUG |
d62a17ae | 598 | zlog_debug("ISIS-Spf: process_lsp %s", |
af8ac8f9 | 599 | print_sys_hostname(lsp->hdr.lsp_id)); |
3f045a08 JB |
600 | #endif /* EXTREME_DEBUG */ |
601 | ||
39a275aa | 602 | if (no_overload) { |
d62a17ae | 603 | if (pseudo_lsp || spftree->mtid == ISIS_MT_IPV4_UNICAST) { |
af8ac8f9 CF |
604 | struct isis_oldstyle_reach *r; |
605 | for (r = (struct isis_oldstyle_reach *) | |
606 | lsp->tlvs->oldstyle_reach.head; | |
607 | r; r = r->next) { | |
a2d41bb0 CF |
608 | if (fabricd) |
609 | continue; | |
610 | ||
d62a17ae | 611 | /* C.2.6 a) */ |
612 | /* Two way connectivity */ | |
af8ac8f9 | 613 | if (!memcmp(r->id, root_sysid, ISIS_SYS_ID_LEN)) |
d62a17ae | 614 | continue; |
615 | if (!pseudo_lsp | |
af8ac8f9 | 616 | && !memcmp(r->id, null_sysid, |
d62a17ae | 617 | ISIS_SYS_ID_LEN)) |
618 | continue; | |
af8ac8f9 | 619 | dist = cost + r->metric; |
d62a17ae | 620 | process_N(spftree, |
af8ac8f9 | 621 | LSP_PSEUDO_ID(r->id) |
d62a17ae | 622 | ? VTYPE_PSEUDO_IS |
623 | : VTYPE_NONPSEUDO_IS, | |
af8ac8f9 CF |
624 | (void *)r->id, dist, depth + 1, |
625 | parent); | |
d62a17ae | 626 | } |
627 | } | |
628 | ||
af8ac8f9 CF |
629 | struct isis_item_list *te_neighs = NULL; |
630 | if (pseudo_lsp || spftree->mtid == ISIS_MT_IPV4_UNICAST) | |
631 | te_neighs = &lsp->tlvs->extended_reach; | |
632 | else | |
633 | te_neighs = isis_lookup_mt_items(&lsp->tlvs->mt_reach, | |
634 | spftree->mtid); | |
635 | ||
636 | struct isis_extended_reach *er; | |
637 | for (er = te_neighs | |
638 | ? (struct isis_extended_reach *) | |
639 | te_neighs->head | |
640 | : NULL; | |
641 | er; er = er->next) { | |
642 | if (!memcmp(er->id, root_sysid, ISIS_SYS_ID_LEN)) | |
d62a17ae | 643 | continue; |
644 | if (!pseudo_lsp | |
af8ac8f9 | 645 | && !memcmp(er->id, null_sysid, ISIS_SYS_ID_LEN)) |
d62a17ae | 646 | continue; |
b30e837b | 647 | dist = cost + (spftree->hopcount_metric ? 1 : er->metric); |
d62a17ae | 648 | process_N(spftree, |
af8ac8f9 CF |
649 | LSP_PSEUDO_ID(er->id) ? VTYPE_PSEUDO_TE_IS |
650 | : VTYPE_NONPSEUDO_TE_IS, | |
651 | (void *)er->id, dist, depth + 1, parent); | |
d62a17ae | 652 | } |
f390d2c7 | 653 | } |
d62a17ae | 654 | |
3be6e411 | 655 | if (!fabricd && !pseudo_lsp && spftree->family == AF_INET |
d62a17ae | 656 | && spftree->mtid == ISIS_MT_IPV4_UNICAST) { |
af8ac8f9 CF |
657 | struct isis_item_list *reachs[] = { |
658 | &lsp->tlvs->oldstyle_ip_reach, | |
659 | &lsp->tlvs->oldstyle_ip_reach_ext}; | |
d62a17ae | 660 | |
d62a17ae | 661 | for (unsigned int i = 0; i < array_size(reachs); i++) { |
af8ac8f9 CF |
662 | vtype = i ? VTYPE_IPREACH_EXTERNAL |
663 | : VTYPE_IPREACH_INTERNAL; | |
664 | ||
321c1bbb CF |
665 | memset(&ip_info, 0, sizeof(ip_info)); |
666 | ip_info.dest.family = AF_INET; | |
667 | ||
af8ac8f9 CF |
668 | struct isis_oldstyle_ip_reach *r; |
669 | for (r = (struct isis_oldstyle_ip_reach *)reachs[i] | |
670 | ->head; | |
671 | r; r = r->next) { | |
672 | dist = cost + r->metric; | |
321c1bbb CF |
673 | ip_info.dest.u.prefix4 = r->prefix.prefix; |
674 | ip_info.dest.prefixlen = r->prefix.prefixlen; | |
675 | process_N(spftree, vtype, &ip_info, | |
af8ac8f9 | 676 | dist, depth + 1, parent); |
d62a17ae | 677 | } |
678 | } | |
f390d2c7 | 679 | } |
d62a17ae | 680 | |
681 | if (!pseudo_lsp && spftree->family == AF_INET) { | |
af8ac8f9 CF |
682 | struct isis_item_list *ipv4_reachs; |
683 | if (spftree->mtid == ISIS_MT_IPV4_UNICAST) | |
684 | ipv4_reachs = &lsp->tlvs->extended_ip_reach; | |
685 | else | |
686 | ipv4_reachs = isis_lookup_mt_items( | |
687 | &lsp->tlvs->mt_ip_reach, spftree->mtid); | |
688 | ||
321c1bbb CF |
689 | memset(&ip_info, 0, sizeof(ip_info)); |
690 | ip_info.dest.family = AF_INET; | |
691 | ||
af8ac8f9 CF |
692 | struct isis_extended_ip_reach *r; |
693 | for (r = ipv4_reachs | |
694 | ? (struct isis_extended_ip_reach *) | |
695 | ipv4_reachs->head | |
696 | : NULL; | |
697 | r; r = r->next) { | |
698 | dist = cost + r->metric; | |
321c1bbb CF |
699 | ip_info.dest.u.prefix4 = r->prefix.prefix; |
700 | ip_info.dest.prefixlen = r->prefix.prefixlen; | |
701 | process_N(spftree, VTYPE_IPREACH_TE, &ip_info, | |
d62a17ae | 702 | dist, depth + 1, parent); |
f390d2c7 | 703 | } |
f390d2c7 | 704 | } |
d62a17ae | 705 | |
706 | if (!pseudo_lsp && spftree->family == AF_INET6) { | |
af8ac8f9 CF |
707 | struct isis_item_list *ipv6_reachs; |
708 | if (spftree->mtid == ISIS_MT_IPV4_UNICAST) | |
709 | ipv6_reachs = &lsp->tlvs->ipv6_reach; | |
710 | else | |
711 | ipv6_reachs = isis_lookup_mt_items( | |
712 | &lsp->tlvs->mt_ipv6_reach, spftree->mtid); | |
713 | ||
714 | struct isis_ipv6_reach *r; | |
715 | for (r = ipv6_reachs | |
716 | ? (struct isis_ipv6_reach *)ipv6_reachs->head | |
717 | : NULL; | |
718 | r; r = r->next) { | |
719 | dist = cost + r->metric; | |
720 | vtype = r->external ? VTYPE_IP6REACH_EXTERNAL | |
721 | : VTYPE_IP6REACH_INTERNAL; | |
321c1bbb CF |
722 | memset(&ip_info, 0, sizeof(ip_info)); |
723 | ip_info.dest.family = AF_INET6; | |
724 | ip_info.dest.u.prefix6 = r->prefix.prefix; | |
725 | ip_info.dest.prefixlen = r->prefix.prefixlen; | |
726 | ||
727 | if (r->subtlvs | |
728 | && r->subtlvs->source_prefix | |
729 | && r->subtlvs->source_prefix->prefixlen) { | |
730 | if (spftree->tree_id != SPFTREE_DSTSRC) { | |
731 | char buff[VID2STR_BUFFER]; | |
732 | zlog_warn("Ignoring dest-src route %s in non dest-src topology", | |
733 | srcdest2str( | |
734 | &ip_info.dest, | |
735 | r->subtlvs->source_prefix, | |
736 | buff, sizeof(buff) | |
737 | ) | |
738 | ); | |
739 | continue; | |
740 | } | |
741 | ip_info.src = *r->subtlvs->source_prefix; | |
742 | } | |
743 | process_N(spftree, vtype, &ip_info, dist, | |
d62a17ae | 744 | depth + 1, parent); |
745 | } | |
f390d2c7 | 746 | } |
d62a17ae | 747 | |
748 | if (fragnode == NULL) | |
749 | fragnode = listhead(lsp->lspu.frags); | |
750 | else | |
751 | fragnode = listnextnode(fragnode); | |
752 | ||
753 | if (fragnode) { | |
754 | lsp = listgetdata(fragnode); | |
755 | goto lspfragloop; | |
756 | } | |
757 | ||
758 | return ISIS_OK; | |
759 | } | |
760 | ||
761 | static int isis_spf_preload_tent(struct isis_spftree *spftree, | |
d7c0a89a QY |
762 | uint8_t *root_sysid, |
763 | struct isis_vertex *parent) | |
d62a17ae | 764 | { |
765 | struct isis_circuit *circuit; | |
766 | struct listnode *cnode, *anode, *ipnode; | |
767 | struct isis_adjacency *adj; | |
768 | struct isis_lsp *lsp; | |
769 | struct list *adj_list; | |
770 | struct list *adjdb; | |
771 | struct prefix_ipv4 *ipv4; | |
321c1bbb | 772 | struct prefix_pair ip_info; |
d62a17ae | 773 | int retval = ISIS_OK; |
d7c0a89a QY |
774 | uint8_t lsp_id[ISIS_SYS_ID_LEN + 2]; |
775 | static uint8_t null_lsp_id[ISIS_SYS_ID_LEN + 2]; | |
d62a17ae | 776 | struct prefix_ipv6 *ipv6; |
777 | struct isis_circuit_mt_setting *circuit_mt; | |
778 | ||
779 | for (ALL_LIST_ELEMENTS_RO(spftree->area->circuit_list, cnode, | |
780 | circuit)) { | |
781 | circuit_mt = circuit_lookup_mt_setting(circuit, spftree->mtid); | |
782 | if (circuit_mt && !circuit_mt->enabled) | |
783 | continue; | |
784 | if (circuit->state != C_STATE_UP) | |
785 | continue; | |
786 | if (!(circuit->is_type & spftree->level)) | |
787 | continue; | |
788 | if (spftree->family == AF_INET && !circuit->ip_router) | |
789 | continue; | |
790 | if (spftree->family == AF_INET6 && !circuit->ipv6_router) | |
791 | continue; | |
792 | /* | |
793 | * Add IP(v6) addresses of this circuit | |
794 | */ | |
b30e837b | 795 | if (spftree->family == AF_INET && !spftree->hopcount_metric) { |
321c1bbb CF |
796 | memset(&ip_info, 0, sizeof(ip_info)); |
797 | ip_info.dest.family = AF_INET; | |
d62a17ae | 798 | for (ALL_LIST_ELEMENTS_RO(circuit->ip_addrs, ipnode, |
799 | ipv4)) { | |
321c1bbb CF |
800 | ip_info.dest.u.prefix4 = ipv4->prefix; |
801 | ip_info.dest.prefixlen = ipv4->prefixlen; | |
802 | apply_mask(&ip_info.dest); | |
d62a17ae | 803 | isis_spf_add_local(spftree, |
804 | VTYPE_IPREACH_INTERNAL, | |
321c1bbb | 805 | &ip_info, NULL, 0, parent); |
d62a17ae | 806 | } |
807 | } | |
b30e837b | 808 | if (spftree->family == AF_INET6 && !spftree->hopcount_metric) { |
321c1bbb CF |
809 | memset(&ip_info, 0, sizeof(ip_info)); |
810 | ip_info.dest.family = AF_INET6; | |
d62a17ae | 811 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_non_link, |
812 | ipnode, ipv6)) { | |
321c1bbb CF |
813 | ip_info.dest.u.prefix6 = ipv6->prefix; |
814 | ip_info.dest.prefixlen = ipv6->prefixlen; | |
815 | apply_mask(&ip_info.dest); | |
d62a17ae | 816 | isis_spf_add_local(spftree, |
817 | VTYPE_IP6REACH_INTERNAL, | |
321c1bbb | 818 | &ip_info, NULL, 0, parent); |
d62a17ae | 819 | } |
820 | } | |
821 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) { | |
822 | /* | |
823 | * Add the adjacencies | |
824 | */ | |
825 | adj_list = list_new(); | |
826 | adjdb = circuit->u.bc.adjdb[spftree->level - 1]; | |
827 | isis_adj_build_up_list(adjdb, adj_list); | |
828 | if (listcount(adj_list) == 0) { | |
6a154c88 | 829 | list_delete(&adj_list); |
e740f9c1 | 830 | if (IS_DEBUG_SPF_EVENTS) |
d62a17ae | 831 | zlog_debug( |
832 | "ISIS-Spf: no L%d adjacencies on circuit %s", | |
833 | spftree->level, | |
834 | circuit->interface->name); | |
835 | continue; | |
836 | } | |
837 | for (ALL_LIST_ELEMENTS_RO(adj_list, anode, adj)) { | |
838 | if (!adj_has_mt(adj, spftree->mtid)) | |
839 | continue; | |
840 | if (spftree->mtid == ISIS_MT_IPV4_UNICAST | |
af8ac8f9 CF |
841 | && !speaks(adj->nlpids.nlpids, |
842 | adj->nlpids.count, | |
843 | spftree->family)) | |
d62a17ae | 844 | continue; |
845 | switch (adj->sys_type) { | |
846 | case ISIS_SYSTYPE_ES: | |
847 | memcpy(lsp_id, adj->sysid, | |
848 | ISIS_SYS_ID_LEN); | |
849 | LSP_PSEUDO_ID(lsp_id) = 0; | |
850 | isis_spf_add_local( | |
851 | spftree, VTYPE_ES, lsp_id, adj, | |
b30e837b | 852 | spftree->hopcount_metric ? 1 : |
d62a17ae | 853 | circuit->te_metric |
854 | [spftree->level - 1], | |
855 | parent); | |
856 | break; | |
857 | case ISIS_SYSTYPE_IS: | |
858 | case ISIS_SYSTYPE_L1_IS: | |
859 | case ISIS_SYSTYPE_L2_IS: | |
860 | memcpy(lsp_id, adj->sysid, | |
861 | ISIS_SYS_ID_LEN); | |
862 | LSP_PSEUDO_ID(lsp_id) = 0; | |
863 | LSP_FRAGMENT(lsp_id) = 0; | |
864 | isis_spf_add_local( | |
865 | spftree, | |
866 | spftree->area->oldmetric | |
867 | ? VTYPE_NONPSEUDO_IS | |
868 | : VTYPE_NONPSEUDO_TE_IS, | |
869 | lsp_id, adj, | |
b30e837b | 870 | spftree->hopcount_metric ? 1 : |
d62a17ae | 871 | circuit->te_metric |
872 | [spftree->level - 1], | |
873 | parent); | |
874 | lsp = lsp_search( | |
4bef0ec4 DL |
875 | &spftree->area->lspdb[spftree->level- 1], |
876 | lsp_id); | |
d62a17ae | 877 | if (lsp == NULL |
af8ac8f9 | 878 | || lsp->hdr.rem_lifetime == 0) |
d62a17ae | 879 | zlog_warn( |
3efd0893 | 880 | "ISIS-Spf: No LSP %s found for IS adjacency L%d on %s (ID %u)", |
d62a17ae | 881 | rawlspid_print(lsp_id), |
882 | spftree->level, | |
883 | circuit->interface->name, | |
884 | circuit->circuit_id); | |
885 | break; | |
886 | case ISIS_SYSTYPE_UNKNOWN: | |
887 | default: | |
888 | zlog_warn( | |
0437e105 | 889 | "isis_spf_preload_tent unknown adj type"); |
d62a17ae | 890 | } |
891 | } | |
6a154c88 | 892 | list_delete(&adj_list); |
d62a17ae | 893 | /* |
894 | * Add the pseudonode | |
895 | */ | |
896 | if (spftree->level == 1) | |
897 | memcpy(lsp_id, circuit->u.bc.l1_desig_is, | |
898 | ISIS_SYS_ID_LEN + 1); | |
899 | else | |
900 | memcpy(lsp_id, circuit->u.bc.l2_desig_is, | |
901 | ISIS_SYS_ID_LEN + 1); | |
902 | /* can happen during DR reboot */ | |
903 | if (memcmp(lsp_id, null_lsp_id, ISIS_SYS_ID_LEN + 1) | |
904 | == 0) { | |
e740f9c1 | 905 | if (IS_DEBUG_SPF_EVENTS) |
d62a17ae | 906 | zlog_debug( |
907 | "ISIS-Spf: No L%d DR on %s (ID %d)", | |
908 | spftree->level, | |
909 | circuit->interface->name, | |
910 | circuit->circuit_id); | |
911 | continue; | |
912 | } | |
913 | adj = isis_adj_lookup(lsp_id, adjdb); | |
914 | /* if no adj, we are the dis or error */ | |
915 | if (!adj && !circuit->u.bc.is_dr[spftree->level - 1]) { | |
916 | zlog_warn( | |
3efd0893 | 917 | "ISIS-Spf: No adjacency found from root to L%d DR %s on %s (ID %d)", |
d62a17ae | 918 | spftree->level, rawlspid_print(lsp_id), |
919 | circuit->interface->name, | |
920 | circuit->circuit_id); | |
921 | continue; | |
922 | } | |
923 | lsp = lsp_search( | |
4bef0ec4 DL |
924 | &spftree->area->lspdb[spftree->level - 1], |
925 | lsp_id); | |
af8ac8f9 | 926 | if (lsp == NULL || lsp->hdr.rem_lifetime == 0) { |
d62a17ae | 927 | zlog_warn( |
3efd0893 | 928 | "ISIS-Spf: No lsp (%p) found from root to L%d DR %s on %s (ID %d)", |
d62a17ae | 929 | (void *)lsp, spftree->level, |
930 | rawlspid_print(lsp_id), | |
931 | circuit->interface->name, | |
932 | circuit->circuit_id); | |
933 | continue; | |
934 | } | |
b30e837b CF |
935 | isis_spf_process_lsp(spftree, lsp, |
936 | spftree->hopcount_metric ? | |
937 | 1 : circuit->te_metric[spftree->level - 1], | |
938 | 0, root_sysid, parent); | |
d62a17ae | 939 | } else if (circuit->circ_type == CIRCUIT_T_P2P) { |
940 | adj = circuit->u.p2p.neighbor; | |
44b89511 | 941 | if (!adj || adj->adj_state != ISIS_ADJ_UP) |
d62a17ae | 942 | continue; |
943 | if (!adj_has_mt(adj, spftree->mtid)) | |
944 | continue; | |
945 | switch (adj->sys_type) { | |
946 | case ISIS_SYSTYPE_ES: | |
947 | memcpy(lsp_id, adj->sysid, ISIS_SYS_ID_LEN); | |
948 | LSP_PSEUDO_ID(lsp_id) = 0; | |
949 | isis_spf_add_local( | |
950 | spftree, VTYPE_ES, lsp_id, adj, | |
b30e837b | 951 | spftree->hopcount_metric ? 1 : |
d62a17ae | 952 | circuit->te_metric[spftree->level - 1], |
953 | parent); | |
954 | break; | |
955 | case ISIS_SYSTYPE_IS: | |
956 | case ISIS_SYSTYPE_L1_IS: | |
957 | case ISIS_SYSTYPE_L2_IS: | |
958 | memcpy(lsp_id, adj->sysid, ISIS_SYS_ID_LEN); | |
959 | LSP_PSEUDO_ID(lsp_id) = 0; | |
960 | LSP_FRAGMENT(lsp_id) = 0; | |
961 | if (spftree->mtid != ISIS_MT_IPV4_UNICAST | |
af8ac8f9 CF |
962 | || speaks(adj->nlpids.nlpids, |
963 | adj->nlpids.count, | |
964 | spftree->family)) | |
d62a17ae | 965 | isis_spf_add_local( |
966 | spftree, | |
967 | spftree->area->oldmetric | |
968 | ? VTYPE_NONPSEUDO_IS | |
969 | : VTYPE_NONPSEUDO_TE_IS, | |
970 | lsp_id, adj, | |
b30e837b | 971 | spftree->hopcount_metric ? 1 : |
d62a17ae | 972 | circuit->te_metric |
973 | [spftree->level - 1], | |
974 | parent); | |
975 | break; | |
976 | case ISIS_SYSTYPE_UNKNOWN: | |
977 | default: | |
978 | zlog_warn( | |
979 | "isis_spf_preload_tent unknown adj type"); | |
980 | break; | |
981 | } | |
982 | } else if (circuit->circ_type == CIRCUIT_T_LOOPBACK) { | |
983 | continue; | |
984 | } else { | |
985 | zlog_warn("isis_spf_preload_tent unsupported media"); | |
986 | retval = ISIS_WARNING; | |
987 | } | |
f390d2c7 | 988 | } |
eb5d44eb | 989 | |
d62a17ae | 990 | return retval; |
eb5d44eb | 991 | } |
992 | ||
993 | /* | |
994 | * The parent(s) for vertex is set when added to TENT list | |
995 | * now we just put the child pointer(s) in place | |
996 | */ | |
d62a17ae | 997 | static void add_to_paths(struct isis_spftree *spftree, |
998 | struct isis_vertex *vertex) | |
eb5d44eb | 999 | { |
321c1bbb | 1000 | char buff[VID2STR_BUFFER]; |
3f045a08 | 1001 | |
ae9c9aba | 1002 | if (isis_find_vertex(&spftree->paths, &vertex->N, vertex->type)) |
d62a17ae | 1003 | return; |
bded4060 | 1004 | isis_vertex_queue_append(&spftree->paths, vertex); |
eb5d44eb | 1005 | |
f390d2c7 | 1006 | #ifdef EXTREME_DEBUG |
d62a17ae | 1007 | zlog_debug("ISIS-Spf: added %s %s %s depth %d dist %d to PATHS", |
1008 | print_sys_hostname(vertex->N.id), vtype2string(vertex->type), | |
1009 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
1010 | vertex->d_N); | |
f390d2c7 | 1011 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 1012 | |
d62a17ae | 1013 | if (VTYPE_IP(vertex->type)) { |
1014 | if (listcount(vertex->Adj_N) > 0) | |
321c1bbb CF |
1015 | isis_route_create(&vertex->N.ip.dest, |
1016 | &vertex->N.ip.src, | |
d62a17ae | 1017 | vertex->d_N, vertex->depth, |
1018 | vertex->Adj_N, spftree->area, | |
3dace42d | 1019 | spftree->route_table); |
e740f9c1 | 1020 | else if (IS_DEBUG_SPF_EVENTS) |
d62a17ae | 1021 | zlog_debug( |
3efd0893 | 1022 | "ISIS-Spf: no adjacencies do not install route for %s depth %d dist %d", |
d62a17ae | 1023 | vid2string(vertex, buff, sizeof(buff)), |
1024 | vertex->depth, vertex->d_N); | |
1025 | } | |
1026 | ||
1027 | return; | |
eb5d44eb | 1028 | } |
1029 | ||
d62a17ae | 1030 | static void init_spt(struct isis_spftree *spftree, int mtid, int level, |
b30e837b CF |
1031 | int family, enum spf_tree_id tree_id, |
1032 | bool hopcount_metric) | |
eb5d44eb | 1033 | { |
eb919f07 CF |
1034 | isis_vertex_queue_clear(&spftree->tents); |
1035 | isis_vertex_queue_clear(&spftree->paths); | |
d62a17ae | 1036 | |
1037 | spftree->mtid = mtid; | |
1038 | spftree->level = level; | |
1039 | spftree->family = family; | |
6d38d078 | 1040 | spftree->tree_id = tree_id; |
b30e837b CF |
1041 | spftree->hopcount_metric = hopcount_metric; |
1042 | } | |
1043 | ||
1044 | static void isis_spf_loop(struct isis_spftree *spftree, | |
1045 | uint8_t *root_sysid) | |
1046 | { | |
1047 | struct isis_vertex *vertex; | |
b30e837b CF |
1048 | struct isis_lsp *lsp; |
1049 | ||
1050 | while (isis_vertex_queue_count(&spftree->tents)) { | |
1051 | vertex = isis_vertex_queue_pop(&spftree->tents); | |
1052 | ||
1053 | #ifdef EXTREME_DEBUG | |
1054 | zlog_debug( | |
1055 | "ISIS-Spf: get TENT node %s %s depth %d dist %d to PATHS", | |
1056 | print_sys_hostname(vertex->N.id), | |
1057 | vtype2string(vertex->type), vertex->depth, vertex->d_N); | |
1058 | #endif /* EXTREME_DEBUG */ | |
1059 | ||
1060 | add_to_paths(spftree, vertex); | |
cbd8e49e CF |
1061 | if (!VTYPE_IS(vertex->type)) |
1062 | continue; | |
1063 | ||
1064 | lsp = lsp_for_vertex(spftree, vertex); | |
1065 | if (!lsp) { | |
1066 | zlog_warn("ISIS-Spf: No LSP found for %s", | |
883b4b86 A |
1067 | isis_format_id(vertex->N.id, |
1068 | sizeof(vertex->N.id))); | |
cbd8e49e | 1069 | continue; |
b30e837b | 1070 | } |
cbd8e49e CF |
1071 | |
1072 | isis_spf_process_lsp(spftree, lsp, vertex->d_N, vertex->depth, | |
1073 | root_sysid, vertex); | |
b30e837b CF |
1074 | } |
1075 | } | |
1076 | ||
1077 | struct isis_spftree *isis_run_hopcount_spf(struct isis_area *area, | |
1078 | uint8_t *sysid, | |
1079 | struct isis_spftree *spftree) | |
1080 | { | |
1081 | if (!spftree) | |
1082 | spftree = isis_spftree_new(area); | |
1083 | ||
1084 | init_spt(spftree, ISIS_MT_IPV4_UNICAST, ISIS_LEVEL2, | |
1085 | AF_INET, SPFTREE_IPV4, true); | |
1086 | if (!memcmp(sysid, isis->sysid, ISIS_SYS_ID_LEN)) { | |
1087 | /* If we are running locally, initialize with information from adjacencies */ | |
1088 | struct isis_vertex *root = isis_spf_add_root(spftree, sysid); | |
1089 | isis_spf_preload_tent(spftree, sysid, root); | |
1090 | } else { | |
1091 | isis_vertex_queue_insert(&spftree->tents, isis_vertex_new( | |
686afe9f CF |
1092 | spftree, sysid, |
1093 | VTYPE_NONPSEUDO_TE_IS)); | |
b30e837b CF |
1094 | } |
1095 | ||
1096 | isis_spf_loop(spftree, sysid); | |
1097 | ||
1098 | return spftree; | |
eb5d44eb | 1099 | } |
1100 | ||
6d38d078 | 1101 | static int isis_run_spf(struct isis_area *area, int level, |
e26e2c15 | 1102 | enum spf_tree_id tree_id, uint8_t *sysid) |
eb5d44eb | 1103 | { |
d62a17ae | 1104 | int retval = ISIS_OK; |
d62a17ae | 1105 | struct isis_vertex *root_vertex; |
6d38d078 | 1106 | struct isis_spftree *spftree = area->spftree[tree_id][level - 1]; |
e26e2c15 RW |
1107 | struct timeval time_start; |
1108 | struct timeval time_end; | |
6d38d078 | 1109 | uint16_t mtid = 0; |
d62a17ae | 1110 | |
1111 | /* Get time that can't roll backwards. */ | |
e26e2c15 | 1112 | monotime(&time_start); |
d62a17ae | 1113 | |
6d38d078 CF |
1114 | int family = -1; |
1115 | switch (tree_id) { | |
1116 | case SPFTREE_IPV4: | |
1117 | family = AF_INET; | |
1118 | mtid = ISIS_MT_IPV4_UNICAST; | |
1119 | break; | |
1120 | case SPFTREE_IPV6: | |
1121 | family = AF_INET6; | |
1122 | mtid = isis_area_ipv6_topology(area); | |
1123 | break; | |
321c1bbb CF |
1124 | case SPFTREE_DSTSRC: |
1125 | family = AF_INET6; | |
1126 | mtid = ISIS_MT_IPV6_DSTSRC; | |
1127 | break; | |
6d38d078 CF |
1128 | case SPFTREE_COUNT: |
1129 | assert(!"isis_run_spf should never be called with SPFTREE_COUNT as argument!"); | |
1130 | return ISIS_WARNING; | |
1131 | } | |
1132 | ||
d62a17ae | 1133 | assert(spftree); |
1134 | assert(sysid); | |
1135 | ||
d62a17ae | 1136 | /* |
1137 | * C.2.5 Step 0 | |
1138 | */ | |
b30e837b | 1139 | init_spt(spftree, mtid, level, family, tree_id, false); |
d62a17ae | 1140 | /* a) */ |
1141 | root_vertex = isis_spf_add_root(spftree, sysid); | |
1142 | /* b) */ | |
1143 | retval = isis_spf_preload_tent(spftree, sysid, root_vertex); | |
1144 | if (retval != ISIS_OK) { | |
1145 | zlog_warn("ISIS-Spf: failed to load TENT SPF-root:%s", | |
1146 | print_sys_hostname(sysid)); | |
1147 | goto out; | |
1148 | } | |
1149 | ||
1150 | /* | |
1151 | * C.2.7 Step 2 | |
1152 | */ | |
ce837d81 | 1153 | if (!isis_vertex_queue_count(&spftree->tents) |
e740f9c1 | 1154 | && (IS_DEBUG_SPF_EVENTS)) { |
d62a17ae | 1155 | zlog_warn("ISIS-Spf: TENT is empty SPF-root:%s", |
1156 | print_sys_hostname(sysid)); | |
d62a17ae | 1157 | } |
1158 | ||
b30e837b | 1159 | isis_spf_loop(spftree, sysid); |
13fb40ac | 1160 | out: |
d62a17ae | 1161 | spftree->runcount++; |
1162 | spftree->last_run_timestamp = time(NULL); | |
e26e2c15 RW |
1163 | spftree->last_run_monotime = monotime(&time_end); |
1164 | spftree->last_run_duration = | |
1165 | ((time_end.tv_sec - time_start.tv_sec) * 1000000) | |
1166 | + (time_end.tv_usec - time_start.tv_usec); | |
d62a17ae | 1167 | |
1168 | return retval; | |
eb5d44eb | 1169 | } |
1170 | ||
3dace42d CF |
1171 | void isis_spf_verify_routes(struct isis_area *area, struct isis_spftree **trees) |
1172 | { | |
1173 | if (area->is_type == IS_LEVEL_1) { | |
1174 | isis_route_verify_table(area, trees[0]->route_table); | |
1175 | } else if (area->is_type == IS_LEVEL_2) { | |
1176 | isis_route_verify_table(area, trees[1]->route_table); | |
1177 | } else { | |
1178 | isis_route_verify_merge(area, trees[0]->route_table, | |
1179 | trees[1]->route_table); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | void isis_spf_invalidate_routes(struct isis_spftree *tree) | |
1184 | { | |
1185 | isis_route_invalidate_table(tree->area, tree->route_table); | |
1186 | } | |
1187 | ||
d62a17ae | 1188 | static int isis_run_spf_cb(struct thread *thread) |
eb5d44eb | 1189 | { |
d62a17ae | 1190 | struct isis_spf_run *run = THREAD_ARG(thread); |
1191 | struct isis_area *area = run->area; | |
1192 | int level = run->level; | |
1193 | int retval = ISIS_OK; | |
1194 | ||
1195 | XFREE(MTYPE_ISIS_SPF_RUN, run); | |
1196 | area->spf_timer[level - 1] = NULL; | |
1197 | ||
1198 | if (!(area->is_type & level)) { | |
e740f9c1 | 1199 | if (IS_DEBUG_SPF_EVENTS) |
d62a17ae | 1200 | zlog_warn("ISIS-SPF (%s) area does not share level", |
1201 | area->area_tag); | |
1202 | return ISIS_WARNING; | |
1203 | } | |
eb5d44eb | 1204 | |
3dace42d CF |
1205 | isis_area_invalidate_routes(area, level); |
1206 | ||
e740f9c1 | 1207 | if (IS_DEBUG_SPF_EVENTS) |
d62a17ae | 1208 | zlog_debug("ISIS-Spf (%s) L%d SPF needed, periodic SPF", |
1209 | area->area_tag, level); | |
f390d2c7 | 1210 | |
d62a17ae | 1211 | if (area->ip_circuits) |
e26e2c15 | 1212 | retval = isis_run_spf(area, level, SPFTREE_IPV4, isis->sysid); |
d62a17ae | 1213 | if (area->ipv6_circuits) |
e26e2c15 RW |
1214 | retval = isis_run_spf(area, level, SPFTREE_IPV6, isis->sysid); |
1215 | if (area->ipv6_circuits && isis_area_ipv6_dstsrc_enabled(area)) | |
1216 | retval = isis_run_spf(area, level, SPFTREE_DSTSRC, isis->sysid); | |
eb5d44eb | 1217 | |
3dace42d CF |
1218 | isis_area_verify_routes(area); |
1219 | ||
26f6acaf RW |
1220 | isis_area_verify_sr(area); |
1221 | ||
3dace42d CF |
1222 | /* walk all circuits and reset any spf specific flags */ |
1223 | struct listnode *node; | |
1224 | struct isis_circuit *circuit; | |
1225 | for (ALL_LIST_ELEMENTS_RO(area->circuit_list, node, circuit)) | |
1226 | UNSET_FLAG(circuit->flags, ISIS_CIRCUIT_FLAPPED_AFTER_SPF); | |
1227 | ||
b30e837b CF |
1228 | fabricd_run_spf(area); |
1229 | ||
d62a17ae | 1230 | return retval; |
eb5d44eb | 1231 | } |
1232 | ||
d62a17ae | 1233 | static struct isis_spf_run *isis_run_spf_arg(struct isis_area *area, int level) |
eb5d44eb | 1234 | { |
d62a17ae | 1235 | struct isis_spf_run *run = XMALLOC(MTYPE_ISIS_SPF_RUN, sizeof(*run)); |
1236 | ||
1237 | run->area = area; | |
1238 | run->level = level; | |
1239 | ||
1240 | return run; | |
eb5d44eb | 1241 | } |
eb5d44eb | 1242 | |
d62db30d CF |
1243 | int _isis_spf_schedule(struct isis_area *area, int level, |
1244 | const char *func, const char *file, int line) | |
eb5d44eb | 1245 | { |
be985ba0 | 1246 | struct isis_spftree *spftree = area->spftree[SPFTREE_IPV4][level - 1]; |
3dca3c8c CF |
1247 | time_t now = monotime(NULL); |
1248 | int diff = now - spftree->last_run_monotime; | |
d62a17ae | 1249 | |
1250 | assert(diff >= 0); | |
1251 | assert(area->is_type & level); | |
1252 | ||
e740f9c1 | 1253 | if (IS_DEBUG_SPF_EVENTS) { |
d62a17ae | 1254 | zlog_debug( |
3efd0893 | 1255 | "ISIS-Spf (%s) L%d SPF schedule called, lastrun %d sec ago Caller: %s %s:%d", |
d62db30d CF |
1256 | area->area_tag, level, diff, func, file, line); |
1257 | } | |
d62a17ae | 1258 | |
1259 | if (area->spf_delay_ietf[level - 1]) { | |
1260 | /* Need to call schedule function also if spf delay is running | |
1261 | * to | |
1262 | * restart holdoff timer - compare | |
1263 | * draft-ietf-rtgwg-backoff-algo-04 */ | |
1264 | long delay = | |
1265 | spf_backoff_schedule(area->spf_delay_ietf[level - 1]); | |
1266 | if (area->spf_timer[level - 1]) | |
1267 | return ISIS_OK; | |
1268 | ||
1269 | thread_add_timer_msec(master, isis_run_spf_cb, | |
1270 | isis_run_spf_arg(area, level), delay, | |
1271 | &area->spf_timer[level - 1]); | |
1272 | return ISIS_OK; | |
3f045a08 | 1273 | } |
d62a17ae | 1274 | |
1275 | if (area->spf_timer[level - 1]) | |
1276 | return ISIS_OK; | |
1277 | ||
1278 | /* wait configured min_spf_interval before doing the SPF */ | |
3dca3c8c | 1279 | long timer; |
690497fb G |
1280 | if (diff >= area->min_spf_interval[level - 1] |
1281 | || area->bfd_force_spf_refresh) { | |
1282 | /* | |
1283 | * Last run is more than min interval ago or BFD signalled a | |
1284 | * 'down' message, schedule immediate run | |
1285 | */ | |
3dca3c8c | 1286 | timer = 0; |
690497fb G |
1287 | |
1288 | if (area->bfd_force_spf_refresh) { | |
1289 | zlog_debug( | |
1290 | "ISIS-Spf (%s) L%d SPF scheduled immediately due to BFD 'down' message", | |
1291 | area->area_tag, level); | |
1292 | area->bfd_force_spf_refresh = false; | |
1293 | } | |
3dca3c8c CF |
1294 | } else { |
1295 | timer = area->min_spf_interval[level - 1] - diff; | |
f390d2c7 | 1296 | } |
3f045a08 | 1297 | |
d62a17ae | 1298 | thread_add_timer(master, isis_run_spf_cb, isis_run_spf_arg(area, level), |
3dca3c8c | 1299 | timer, &area->spf_timer[level - 1]); |
d62a17ae | 1300 | |
e740f9c1 | 1301 | if (IS_DEBUG_SPF_EVENTS) |
013b29d7 RZ |
1302 | zlog_debug("ISIS-Spf (%s) L%d SPF scheduled %ld sec from now", |
1303 | area->area_tag, level, timer); | |
d62a17ae | 1304 | |
1305 | return ISIS_OK; | |
1306 | } | |
1307 | ||
eb919f07 | 1308 | static void isis_print_paths(struct vty *vty, struct isis_vertex_queue *queue, |
d7c0a89a | 1309 | uint8_t *root_sysid) |
d62a17ae | 1310 | { |
1311 | struct listnode *node; | |
d62a17ae | 1312 | struct isis_vertex *vertex; |
321c1bbb | 1313 | char buff[VID2STR_BUFFER]; |
d62a17ae | 1314 | |
1315 | vty_out(vty, | |
1316 | "Vertex Type Metric Next-Hop Interface Parent\n"); | |
1317 | ||
eb919f07 | 1318 | for (ALL_QUEUE_ELEMENTS_RO(queue, node, vertex)) { |
d62a17ae | 1319 | if (memcmp(vertex->N.id, root_sysid, ISIS_SYS_ID_LEN) == 0) { |
1320 | vty_out(vty, "%-20s %-12s %-6s", | |
1321 | print_sys_hostname(root_sysid), "", ""); | |
af88c591 CF |
1322 | vty_out(vty, "%-30s\n", ""); |
1323 | continue; | |
d62a17ae | 1324 | } |
1325 | ||
af88c591 CF |
1326 | int rows = 0; |
1327 | struct listnode *anode = listhead(vertex->Adj_N); | |
1328 | struct listnode *pnode = listhead(vertex->parents); | |
1329 | struct isis_adjacency *adj; | |
1330 | struct isis_vertex *pvertex; | |
1331 | ||
1332 | vty_out(vty, "%-20s %-12s %-6u ", | |
1333 | vid2string(vertex, buff, sizeof(buff)), | |
1334 | vtype2string(vertex->type), vertex->d_N); | |
1230a82d A |
1335 | for (unsigned int i = 0; |
1336 | i < MAX(vertex->Adj_N ? listcount(vertex->Adj_N) : 0, | |
1337 | vertex->parents ? listcount(vertex->parents) : 0); | |
996c9314 | 1338 | i++) { |
af88c591 CF |
1339 | if (anode) { |
1340 | adj = listgetdata(anode); | |
1341 | anode = anode->next; | |
1342 | } else { | |
1343 | adj = NULL; | |
1344 | } | |
1345 | ||
1346 | if (pnode) { | |
1347 | pvertex = listgetdata(pnode); | |
1348 | pnode = pnode->next; | |
1349 | } else { | |
1350 | pvertex = NULL; | |
1351 | } | |
1352 | ||
1353 | if (rows) { | |
1354 | vty_out(vty, "\n"); | |
1355 | vty_out(vty, "%-20s %-12s %-6s ", "", "", ""); | |
1356 | } | |
1357 | ||
1358 | if (adj) { | |
1359 | vty_out(vty, "%-20s %-9s ", | |
1360 | print_sys_hostname(adj->sysid), | |
1361 | adj->circuit->interface->name); | |
1362 | } | |
1363 | ||
1364 | if (pvertex) { | |
1365 | if (!adj) | |
1366 | vty_out(vty, "%-20s %-9s ", "", ""); | |
1367 | ||
d62a17ae | 1368 | vty_out(vty, "%s(%d)", |
996c9314 | 1369 | vid2string(pvertex, buff, sizeof(buff)), |
d62a17ae | 1370 | pvertex->type); |
d62a17ae | 1371 | } |
d62a17ae | 1372 | |
af88c591 CF |
1373 | ++rows; |
1374 | } | |
d62a17ae | 1375 | vty_out(vty, "\n"); |
1376 | } | |
eb5d44eb | 1377 | } |
1378 | ||
321c1bbb CF |
1379 | static void isis_print_spftree(struct vty *vty, int level, |
1380 | struct isis_area *area, | |
1381 | enum spf_tree_id tree_id) | |
1382 | { | |
1383 | const char *tree_id_text = NULL; | |
1384 | ||
1385 | switch (tree_id) { | |
1386 | case SPFTREE_IPV4: | |
1387 | tree_id_text = "that speak IP"; | |
1388 | break; | |
1389 | case SPFTREE_IPV6: | |
1390 | tree_id_text = "that speak IPv6"; | |
1391 | break; | |
1392 | case SPFTREE_DSTSRC: | |
1393 | tree_id_text = "that support IPv6 dst-src routing"; | |
1394 | break; | |
1395 | case SPFTREE_COUNT: | |
1396 | assert(!"isis_print_spftree shouldn't be called with SPFTREE_COUNT as type"); | |
1397 | return; | |
1398 | } | |
1399 | ||
1400 | if (!area->spftree[tree_id][level - 1] | |
1401 | || !isis_vertex_queue_count( | |
1402 | &area->spftree[tree_id][level - 1]->paths)) | |
1403 | return; | |
1404 | ||
1405 | vty_out(vty, "IS-IS paths to level-%d routers %s\n", | |
1406 | level, tree_id_text); | |
1407 | isis_print_paths(vty, &area->spftree[tree_id][level - 1]->paths, | |
1408 | isis->sysid); | |
1409 | vty_out(vty, "\n"); | |
1410 | } | |
1411 | ||
eb5d44eb | 1412 | DEFUN (show_isis_topology, |
1413 | show_isis_topology_cmd, | |
ef020087 CF |
1414 | "show " PROTO_NAME " topology" |
1415 | #ifndef FABRICD | |
1416 | " [<level-1|level-2>]" | |
1417 | #endif | |
1418 | , SHOW_STR | |
7c0cbd0e | 1419 | PROTO_HELP |
1b49e4f0 | 1420 | "IS-IS paths to Intermediate Systems\n" |
ef020087 | 1421 | #ifndef FABRICD |
1b49e4f0 | 1422 | "Paths to all level-1 routers in the area\n" |
ef020087 CF |
1423 | "Paths to all level-2 routers in the domain\n" |
1424 | #endif | |
1425 | ) | |
eb5d44eb | 1426 | { |
d62a17ae | 1427 | int levels; |
1428 | struct listnode *node; | |
1429 | struct isis_area *area; | |
1430 | ||
1431 | if (argc < 4) | |
1432 | levels = ISIS_LEVEL1 | ISIS_LEVEL2; | |
1433 | else if (strmatch(argv[3]->text, "level-1")) | |
1434 | levels = ISIS_LEVEL1; | |
1435 | else | |
1436 | levels = ISIS_LEVEL2; | |
1437 | ||
1438 | if (!isis->area_list || isis->area_list->count == 0) | |
1439 | return CMD_SUCCESS; | |
1440 | ||
1441 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) { | |
1442 | vty_out(vty, "Area %s:\n", | |
1443 | area->area_tag ? area->area_tag : "null"); | |
1444 | ||
1445 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVELS; level++) { | |
1446 | if ((level & levels) == 0) | |
1447 | continue; | |
1448 | ||
321c1bbb CF |
1449 | if (area->ip_circuits > 0) { |
1450 | isis_print_spftree(vty, level, area, | |
1451 | SPFTREE_IPV4); | |
d62a17ae | 1452 | } |
321c1bbb CF |
1453 | if (area->ipv6_circuits > 0) { |
1454 | isis_print_spftree(vty, level, area, | |
1455 | SPFTREE_IPV6); | |
1456 | } | |
1457 | if (isis_area_ipv6_dstsrc_enabled(area)) { | |
1458 | isis_print_spftree(vty, level, area, | |
1459 | SPFTREE_DSTSRC); | |
d62a17ae | 1460 | } |
1461 | } | |
f390d2c7 | 1462 | |
b30e837b CF |
1463 | if (fabricd_spftree(area)) { |
1464 | vty_out(vty, | |
1465 | "IS-IS paths to level-2 routers with hop-by-hop metric\n"); | |
1466 | isis_print_paths(vty, &fabricd_spftree(area)->paths, isis->sysid); | |
1467 | vty_out(vty, "\n"); | |
1468 | } | |
1469 | ||
d62a17ae | 1470 | vty_out(vty, "\n"); |
f390d2c7 | 1471 | } |
3f045a08 | 1472 | |
d62a17ae | 1473 | return CMD_SUCCESS; |
f390d2c7 | 1474 | } |
eb5d44eb | 1475 | |
4d762f26 | 1476 | void isis_spf_cmds_init(void) |
eb5d44eb | 1477 | { |
d62a17ae | 1478 | install_element(VIEW_NODE, &show_isis_topology_cmd); |
eb5d44eb | 1479 | } |
02cd317e CF |
1480 | |
1481 | void isis_spf_print(struct isis_spftree *spftree, struct vty *vty) | |
1482 | { | |
1483 | vty_out(vty, " last run elapsed : "); | |
1484 | vty_out_timestr(vty, spftree->last_run_timestamp); | |
1485 | vty_out(vty, "\n"); | |
1486 | ||
1487 | vty_out(vty, " last run duration : %u usec\n", | |
d7c0a89a | 1488 | (uint32_t)spftree->last_run_duration); |
02cd317e | 1489 | |
996c9314 | 1490 | vty_out(vty, " run count : %u\n", spftree->runcount); |
02cd317e | 1491 | } |