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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 "dict.h" |
43 | #include "isisd.h" | |
44 | #include "isis_misc.h" | |
45 | #include "isis_adjacency.h" | |
46 | #include "isis_circuit.h" | |
eb5d44eb | 47 | #include "isis_pdu.h" |
48 | #include "isis_lsp.h" | |
49 | #include "isis_dynhn.h" | |
50 | #include "isis_spf.h" | |
51 | #include "isis_route.h" | |
52 | #include "isis_csm.h" | |
2b67862c | 53 | #include "isis_mt.h" |
841791b6 | 54 | #include "isis_tlvs.h" |
b30e837b | 55 | #include "fabricd.h" |
cbd8e49e | 56 | #include "isis_spf_private.h" |
eb5d44eb | 57 | |
1b49e4f0 CF |
58 | DEFINE_MTYPE_STATIC(ISISD, ISIS_SPF_RUN, "ISIS SPF Run Info"); |
59 | ||
af8ac8f9 CF |
60 | /* |
61 | * supports the given af ? | |
62 | */ | |
63 | static bool speaks(uint8_t *protocols, uint8_t count, int family) | |
64 | { | |
65 | for (uint8_t i = 0; i < count; i++) { | |
66 | if (family == AF_INET && protocols[i] == NLPID_IP) | |
67 | return true; | |
68 | if (family == AF_INET6 && protocols[i] == NLPID_IPV6) | |
69 | return true; | |
70 | } | |
71 | return false; | |
72 | } | |
73 | ||
1b49e4f0 | 74 | struct isis_spf_run { |
d62a17ae | 75 | struct isis_area *area; |
76 | int level; | |
1b49e4f0 CF |
77 | }; |
78 | ||
eb5d44eb | 79 | /* 7.2.7 */ |
d62a17ae | 80 | static void remove_excess_adjs(struct list *adjs) |
eb5d44eb | 81 | { |
d62a17ae | 82 | struct listnode *node, *excess = NULL; |
83 | struct isis_adjacency *adj, *candidate = NULL; | |
84 | int comp; | |
85 | ||
86 | for (ALL_LIST_ELEMENTS_RO(adjs, node, adj)) { | |
87 | if (excess == NULL) | |
88 | excess = node; | |
89 | candidate = listgetdata(excess); | |
90 | ||
91 | if (candidate->sys_type < adj->sys_type) { | |
92 | excess = node; | |
93 | continue; | |
94 | } | |
95 | if (candidate->sys_type > adj->sys_type) | |
96 | continue; | |
f390d2c7 | 97 | |
d62a17ae | 98 | comp = memcmp(candidate->sysid, adj->sysid, ISIS_SYS_ID_LEN); |
99 | if (comp > 0) { | |
100 | excess = node; | |
101 | continue; | |
102 | } | |
103 | if (comp < 0) | |
104 | continue; | |
eb5d44eb | 105 | |
0849c75e | 106 | if (candidate->circuit->idx > adj->circuit->idx) { |
d62a17ae | 107 | excess = node; |
108 | continue; | |
109 | } | |
f390d2c7 | 110 | |
0849c75e | 111 | if (candidate->circuit->idx < adj->circuit->idx) |
d62a17ae | 112 | continue; |
f390d2c7 | 113 | |
d62a17ae | 114 | comp = memcmp(candidate->snpa, adj->snpa, ETH_ALEN); |
115 | if (comp > 0) { | |
116 | excess = node; | |
117 | continue; | |
118 | } | |
f390d2c7 | 119 | } |
f390d2c7 | 120 | |
d62a17ae | 121 | list_delete_node(adjs, excess); |
eb5d44eb | 122 | |
d62a17ae | 123 | return; |
eb5d44eb | 124 | } |
125 | ||
d62a17ae | 126 | static const char *vtype2string(enum vertextype vtype) |
eb5d44eb | 127 | { |
d62a17ae | 128 | switch (vtype) { |
129 | case VTYPE_PSEUDO_IS: | |
130 | return "pseudo_IS"; | |
131 | break; | |
132 | case VTYPE_PSEUDO_TE_IS: | |
133 | return "pseudo_TE-IS"; | |
134 | break; | |
135 | case VTYPE_NONPSEUDO_IS: | |
136 | return "IS"; | |
137 | break; | |
138 | case VTYPE_NONPSEUDO_TE_IS: | |
139 | return "TE-IS"; | |
140 | break; | |
141 | case VTYPE_ES: | |
142 | return "ES"; | |
143 | break; | |
144 | case VTYPE_IPREACH_INTERNAL: | |
145 | return "IP internal"; | |
146 | break; | |
147 | case VTYPE_IPREACH_EXTERNAL: | |
148 | return "IP external"; | |
149 | break; | |
150 | case VTYPE_IPREACH_TE: | |
151 | return "IP TE"; | |
152 | break; | |
153 | case VTYPE_IP6REACH_INTERNAL: | |
154 | return "IP6 internal"; | |
155 | break; | |
156 | case VTYPE_IP6REACH_EXTERNAL: | |
157 | return "IP6 external"; | |
158 | break; | |
159 | default: | |
160 | return "UNKNOWN"; | |
161 | } | |
162 | return NULL; /* Not reached */ | |
eb5d44eb | 163 | } |
164 | ||
d4cff91a | 165 | const char *vid2string(struct isis_vertex *vertex, char *buff, int size) |
eb5d44eb | 166 | { |
d62a17ae | 167 | if (VTYPE_IS(vertex->type) || VTYPE_ES(vertex->type)) { |
168 | return print_sys_hostname(vertex->N.id); | |
169 | } | |
170 | ||
171 | if (VTYPE_IP(vertex->type)) { | |
321c1bbb CF |
172 | srcdest2str(&vertex->N.ip.dest, |
173 | &vertex->N.ip.src, | |
174 | buff, size); | |
d62a17ae | 175 | return buff; |
176 | } | |
177 | ||
178 | return "UNKNOWN"; | |
eb5d44eb | 179 | } |
180 | ||
686afe9f | 181 | static struct isis_vertex *isis_vertex_new(struct isis_spftree *spftree, |
f6ae63ca | 182 | void *id, |
ae9c9aba | 183 | enum vertextype vtype) |
eb919f07 CF |
184 | { |
185 | struct isis_vertex *vertex; | |
186 | ||
187 | vertex = XCALLOC(MTYPE_ISIS_VERTEX, sizeof(struct isis_vertex)); | |
188 | ||
f6ae63ca | 189 | isis_vertex_id_init(vertex, id, vtype); |
d62a17ae | 190 | |
191 | vertex->Adj_N = list_new(); | |
192 | vertex->parents = list_new(); | |
d62a17ae | 193 | |
686afe9f CF |
194 | if (spftree->hopcount_metric) { |
195 | vertex->firsthops = hash_create(isis_vertex_queue_hash_key, | |
196 | isis_vertex_queue_hash_cmp, | |
197 | NULL); | |
198 | } | |
199 | ||
d62a17ae | 200 | return vertex; |
eb5d44eb | 201 | } |
202 | ||
d62a17ae | 203 | static void isis_vertex_adj_del(struct isis_vertex *vertex, |
204 | struct isis_adjacency *adj) | |
3f045a08 | 205 | { |
d62a17ae | 206 | struct listnode *node, *nextnode; |
207 | if (!vertex) | |
208 | return; | |
209 | for (node = listhead(vertex->Adj_N); node; node = nextnode) { | |
210 | nextnode = listnextnode(node); | |
211 | if (listgetdata(node) == adj) | |
212 | list_delete_node(vertex->Adj_N, node); | |
213 | } | |
214 | return; | |
3f045a08 JB |
215 | } |
216 | ||
d62a17ae | 217 | struct isis_spftree *isis_spftree_new(struct isis_area *area) |
3f045a08 | 218 | { |
d62a17ae | 219 | struct isis_spftree *tree; |
220 | ||
221 | tree = XCALLOC(MTYPE_ISIS_SPFTREE, sizeof(struct isis_spftree)); | |
d62a17ae | 222 | |
bded4060 CF |
223 | isis_vertex_queue_init(&tree->tents, "IS-IS SPF tents", true); |
224 | isis_vertex_queue_init(&tree->paths, "IS-IS SPF paths", false); | |
321c1bbb | 225 | tree->route_table = srcdest_table_init(); |
d62a17ae | 226 | tree->area = area; |
227 | tree->last_run_timestamp = 0; | |
3dca3c8c | 228 | tree->last_run_monotime = 0; |
d62a17ae | 229 | tree->last_run_duration = 0; |
230 | tree->runcount = 0; | |
231 | return tree; | |
3f045a08 JB |
232 | } |
233 | ||
d62a17ae | 234 | void isis_spftree_del(struct isis_spftree *spftree) |
eb5d44eb | 235 | { |
eb919f07 CF |
236 | isis_vertex_queue_free(&spftree->tents); |
237 | isis_vertex_queue_free(&spftree->paths); | |
3dace42d CF |
238 | route_table_finish(spftree->route_table); |
239 | spftree->route_table = NULL; | |
eb5d44eb | 240 | |
3dace42d | 241 | XFREE(MTYPE_ISIS_SPFTREE, spftree); |
d62a17ae | 242 | return; |
eb5d44eb | 243 | } |
3f045a08 | 244 | |
d62a17ae | 245 | static void isis_spftree_adj_del(struct isis_spftree *spftree, |
246 | struct isis_adjacency *adj) | |
3f045a08 | 247 | { |
d62a17ae | 248 | struct listnode *node; |
eb919f07 | 249 | struct isis_vertex *v; |
d62a17ae | 250 | if (!adj) |
251 | return; | |
bded4060 | 252 | assert(!isis_vertex_queue_count(&spftree->tents)); |
eb919f07 CF |
253 | for (ALL_QUEUE_ELEMENTS_RO(&spftree->paths, node, v)) |
254 | isis_vertex_adj_del(v, adj); | |
d62a17ae | 255 | return; |
3f045a08 | 256 | } |
eb5d44eb | 257 | |
d62a17ae | 258 | void spftree_area_init(struct isis_area *area) |
eb5d44eb | 259 | { |
be985ba0 CF |
260 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
261 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
262 | if (!(area->is_type & level)) | |
263 | continue; | |
264 | if (area->spftree[tree][level - 1]) | |
265 | continue; | |
d62a17ae | 266 | |
be985ba0 CF |
267 | area->spftree[tree][level - 1] = isis_spftree_new(area); |
268 | } | |
d62a17ae | 269 | } |
eb5d44eb | 270 | } |
271 | ||
d62a17ae | 272 | void spftree_area_del(struct isis_area *area) |
eb5d44eb | 273 | { |
be985ba0 CF |
274 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
275 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
276 | if (!(area->is_type & level)) | |
277 | continue; | |
278 | if (!area->spftree[tree][level - 1]) | |
279 | continue; | |
d62a17ae | 280 | |
be985ba0 | 281 | isis_spftree_del(area->spftree[tree][level - 1]); |
d62a17ae | 282 | } |
283 | } | |
3f045a08 | 284 | } |
f390d2c7 | 285 | |
d62a17ae | 286 | void spftree_area_adj_del(struct isis_area *area, struct isis_adjacency *adj) |
3f045a08 | 287 | { |
be985ba0 CF |
288 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
289 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
290 | if (!(area->is_type & level)) | |
291 | continue; | |
292 | if (!area->spftree[tree][level - 1]) | |
293 | continue; | |
294 | isis_spftree_adj_del(area->spftree[tree][level - 1], | |
295 | adj); | |
296 | } | |
d62a17ae | 297 | } |
b30e837b CF |
298 | |
299 | if (fabricd_spftree(area) != NULL) | |
300 | isis_spftree_adj_del(fabricd_spftree(area), adj); | |
3f045a08 JB |
301 | } |
302 | ||
d62a17ae | 303 | /* |
304 | * Find the system LSP: returns the LSP in our LSP database | |
3f045a08 JB |
305 | * associated with the given system ID. |
306 | */ | |
d62a17ae | 307 | static struct isis_lsp *isis_root_system_lsp(struct isis_area *area, int level, |
d7c0a89a | 308 | uint8_t *sysid) |
3f045a08 | 309 | { |
d62a17ae | 310 | struct isis_lsp *lsp; |
d7c0a89a | 311 | uint8_t lspid[ISIS_SYS_ID_LEN + 2]; |
d62a17ae | 312 | |
313 | memcpy(lspid, sysid, ISIS_SYS_ID_LEN); | |
314 | LSP_PSEUDO_ID(lspid) = 0; | |
315 | LSP_FRAGMENT(lspid) = 0; | |
316 | lsp = lsp_search(lspid, area->lspdb[level - 1]); | |
af8ac8f9 | 317 | if (lsp && lsp->hdr.rem_lifetime != 0) |
d62a17ae | 318 | return lsp; |
319 | return NULL; | |
eb5d44eb | 320 | } |
321 | ||
322 | /* | |
323 | * Add this IS to the root of SPT | |
324 | */ | |
d62a17ae | 325 | static struct isis_vertex *isis_spf_add_root(struct isis_spftree *spftree, |
d7c0a89a | 326 | uint8_t *sysid) |
eb5d44eb | 327 | { |
d62a17ae | 328 | struct isis_vertex *vertex; |
329 | struct isis_lsp *lsp; | |
eb5d44eb | 330 | #ifdef EXTREME_DEBUG |
321c1bbb | 331 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 332 | #endif /* EXTREME_DEBUG */ |
f390d2c7 | 333 | |
d62a17ae | 334 | lsp = isis_root_system_lsp(spftree->area, spftree->level, sysid); |
335 | if (lsp == NULL) | |
336 | zlog_warn("ISIS-Spf: could not find own l%d LSP!", | |
337 | spftree->level); | |
eb5d44eb | 338 | |
f6ae63ca | 339 | vertex = isis_vertex_new(spftree, sysid, |
9d303b37 DL |
340 | spftree->area->oldmetric |
341 | ? VTYPE_NONPSEUDO_IS | |
342 | : VTYPE_NONPSEUDO_TE_IS); | |
bded4060 | 343 | isis_vertex_queue_append(&spftree->paths, vertex); |
eb5d44eb | 344 | |
345 | #ifdef EXTREME_DEBUG | |
d62a17ae | 346 | zlog_debug("ISIS-Spf: added this IS %s %s depth %d dist %d to PATHS", |
347 | vtype2string(vertex->type), | |
348 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
349 | vertex->d_N); | |
eb5d44eb | 350 | #endif /* EXTREME_DEBUG */ |
351 | ||
d62a17ae | 352 | return vertex; |
eb5d44eb | 353 | } |
354 | ||
686afe9f CF |
355 | static void vertex_add_parent_firsthop(struct hash_backet *backet, void *arg) |
356 | { | |
357 | struct isis_vertex *vertex = arg; | |
358 | struct isis_vertex *hop = backet->data; | |
359 | ||
360 | hash_get(vertex->firsthops, hop, hash_alloc_intern); | |
361 | } | |
362 | ||
363 | static void vertex_update_firsthops(struct isis_vertex *vertex, | |
364 | struct isis_vertex *parent) | |
365 | { | |
366 | if (vertex->d_N <= 2) | |
367 | hash_get(vertex->firsthops, vertex, hash_alloc_intern); | |
368 | ||
369 | if (vertex->d_N < 2 || !parent) | |
370 | return; | |
371 | ||
372 | hash_iterate(parent->firsthops, vertex_add_parent_firsthop, vertex); | |
373 | } | |
374 | ||
eb5d44eb | 375 | /* |
376 | * Add a vertex to TENT sorted by cost and by vertextype on tie break situation | |
377 | */ | |
d62a17ae | 378 | static struct isis_vertex *isis_spf_add2tent(struct isis_spftree *spftree, |
379 | enum vertextype vtype, void *id, | |
380 | uint32_t cost, int depth, | |
381 | struct isis_adjacency *adj, | |
382 | struct isis_vertex *parent) | |
eb5d44eb | 383 | { |
eb919f07 | 384 | struct isis_vertex *vertex; |
d62a17ae | 385 | struct listnode *node; |
386 | struct isis_adjacency *parent_adj; | |
f390d2c7 | 387 | #ifdef EXTREME_DEBUG |
321c1bbb | 388 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 389 | #endif |
390 | ||
eb919f07 CF |
391 | assert(isis_find_vertex(&spftree->paths, id, vtype) == NULL); |
392 | assert(isis_find_vertex(&spftree->tents, id, vtype) == NULL); | |
686afe9f | 393 | vertex = isis_vertex_new(spftree, id, vtype); |
d62a17ae | 394 | vertex->d_N = cost; |
395 | vertex->depth = depth; | |
396 | ||
397 | if (parent) { | |
398 | listnode_add(vertex->parents, parent); | |
d62a17ae | 399 | } |
400 | ||
686afe9f CF |
401 | if (spftree->hopcount_metric) |
402 | vertex_update_firsthops(vertex, parent); | |
403 | ||
d62a17ae | 404 | if (parent && parent->Adj_N && listcount(parent->Adj_N) > 0) { |
405 | for (ALL_LIST_ELEMENTS_RO(parent->Adj_N, node, parent_adj)) | |
406 | listnode_add(vertex->Adj_N, parent_adj); | |
407 | } else if (adj) { | |
408 | listnode_add(vertex->Adj_N, adj); | |
409 | } | |
3f045a08 | 410 | |
f390d2c7 | 411 | #ifdef EXTREME_DEBUG |
d62a17ae | 412 | zlog_debug( |
413 | "ISIS-Spf: add to TENT %s %s %s depth %d dist %d adjcount %d", | |
414 | print_sys_hostname(vertex->N.id), vtype2string(vertex->type), | |
415 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
416 | vertex->d_N, listcount(vertex->Adj_N)); | |
eb5d44eb | 417 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 418 | |
eb919f07 | 419 | isis_vertex_queue_insert(&spftree->tents, vertex); |
d62a17ae | 420 | return vertex; |
421 | } | |
422 | ||
423 | static void isis_spf_add_local(struct isis_spftree *spftree, | |
424 | enum vertextype vtype, void *id, | |
425 | struct isis_adjacency *adj, uint32_t cost, | |
426 | struct isis_vertex *parent) | |
427 | { | |
428 | struct isis_vertex *vertex; | |
429 | ||
eb919f07 | 430 | vertex = isis_find_vertex(&spftree->tents, id, vtype); |
d62a17ae | 431 | |
432 | if (vertex) { | |
433 | /* C.2.5 c) */ | |
434 | if (vertex->d_N == cost) { | |
435 | if (adj) | |
436 | listnode_add(vertex->Adj_N, adj); | |
437 | /* d) */ | |
438 | if (listcount(vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
439 | remove_excess_adjs(vertex->Adj_N); | |
9d303b37 DL |
440 | if (parent && (listnode_lookup(vertex->parents, parent) |
441 | == NULL)) | |
d62a17ae | 442 | listnode_add(vertex->parents, parent); |
d62a17ae | 443 | return; |
444 | } else if (vertex->d_N < cost) { | |
445 | /* e) do nothing */ | |
446 | return; | |
447 | } else { /* vertex->d_N > cost */ | |
448 | /* f) */ | |
eb919f07 | 449 | isis_vertex_queue_delete(&spftree->tents, vertex); |
d62a17ae | 450 | isis_vertex_del(vertex); |
451 | } | |
f390d2c7 | 452 | } |
d62a17ae | 453 | |
454 | isis_spf_add2tent(spftree, vtype, id, cost, 1, adj, parent); | |
455 | return; | |
eb5d44eb | 456 | } |
457 | ||
d62a17ae | 458 | static void process_N(struct isis_spftree *spftree, enum vertextype vtype, |
459 | void *id, uint32_t dist, uint16_t depth, | |
460 | struct isis_vertex *parent) | |
eb5d44eb | 461 | { |
d62a17ae | 462 | struct isis_vertex *vertex; |
eb5d44eb | 463 | #ifdef EXTREME_DEBUG |
321c1bbb | 464 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 465 | #endif |
466 | ||
d62a17ae | 467 | assert(spftree && parent); |
468 | ||
b30e837b CF |
469 | if (spftree->hopcount_metric |
470 | && !VTYPE_IS(vtype)) | |
471 | return; | |
472 | ||
321c1bbb | 473 | struct prefix_pair p; |
af8ac8f9 | 474 | if (vtype >= VTYPE_IPREACH_INTERNAL) { |
321c1bbb CF |
475 | memcpy(&p, id, sizeof(p)); |
476 | apply_mask(&p.dest); | |
477 | apply_mask((struct prefix *)&p.src); | |
af8ac8f9 CF |
478 | id = &p; |
479 | } | |
480 | ||
d62a17ae | 481 | /* RFC3787 section 5.1 */ |
482 | if (spftree->area->newmetric == 1) { | |
483 | if (dist > MAX_WIDE_PATH_METRIC) | |
484 | return; | |
485 | } | |
486 | /* C.2.6 b) */ | |
487 | else if (spftree->area->oldmetric == 1) { | |
488 | if (dist > MAX_NARROW_PATH_METRIC) | |
489 | return; | |
490 | } | |
491 | ||
492 | /* c) */ | |
eb919f07 | 493 | vertex = isis_find_vertex(&spftree->paths, id, vtype); |
d62a17ae | 494 | if (vertex) { |
eb5d44eb | 495 | #ifdef EXTREME_DEBUG |
d62a17ae | 496 | zlog_debug( |
497 | "ISIS-Spf: process_N %s %s %s dist %d already found from PATH", | |
498 | print_sys_hostname(vertex->N.id), vtype2string(vtype), | |
499 | vid2string(vertex, buff, sizeof(buff)), dist); | |
eb5d44eb | 500 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 501 | assert(dist >= vertex->d_N); |
502 | return; | |
503 | } | |
504 | ||
eb919f07 | 505 | vertex = isis_find_vertex(&spftree->tents, id, vtype); |
d62a17ae | 506 | /* d) */ |
507 | if (vertex) { | |
508 | /* 1) */ | |
eb5d44eb | 509 | #ifdef EXTREME_DEBUG |
d62a17ae | 510 | zlog_debug( |
511 | "ISIS-Spf: process_N %s %s %s dist %d parent %s adjcount %d", | |
512 | print_sys_hostname(vertex->N.id), vtype2string(vtype), | |
513 | vid2string(vertex, buff, sizeof(buff)), dist, | |
514 | (parent ? print_sys_hostname(parent->N.id) : "null"), | |
515 | (parent ? listcount(parent->Adj_N) : 0)); | |
eb5d44eb | 516 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 517 | if (vertex->d_N == dist) { |
518 | struct listnode *node; | |
519 | struct isis_adjacency *parent_adj; | |
520 | for (ALL_LIST_ELEMENTS_RO(parent->Adj_N, node, | |
521 | parent_adj)) | |
522 | if (listnode_lookup(vertex->Adj_N, parent_adj) | |
523 | == NULL) | |
524 | listnode_add(vertex->Adj_N, parent_adj); | |
686afe9f CF |
525 | if (spftree->hopcount_metric) |
526 | vertex_update_firsthops(vertex, parent); | |
d62a17ae | 527 | /* 2) */ |
528 | if (listcount(vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
529 | remove_excess_adjs(vertex->Adj_N); | |
530 | if (listnode_lookup(vertex->parents, parent) == NULL) | |
531 | listnode_add(vertex->parents, parent); | |
d62a17ae | 532 | return; |
533 | } else if (vertex->d_N < dist) { | |
534 | return; | |
535 | /* 4) */ | |
536 | } else { | |
eb919f07 | 537 | isis_vertex_queue_delete(&spftree->tents, vertex); |
d62a17ae | 538 | isis_vertex_del(vertex); |
539 | } | |
f390d2c7 | 540 | } |
f390d2c7 | 541 | |
3f045a08 | 542 | #ifdef EXTREME_DEBUG |
d62a17ae | 543 | zlog_debug("ISIS-Spf: process_N add2tent %s %s dist %d parent %s", |
544 | print_sys_hostname(id), vtype2string(vtype), dist, | |
545 | (parent ? print_sys_hostname(parent->N.id) : "null")); | |
3f045a08 JB |
546 | #endif /* EXTREME_DEBUG */ |
547 | ||
d62a17ae | 548 | isis_spf_add2tent(spftree, vtype, id, dist, depth, NULL, parent); |
549 | return; | |
eb5d44eb | 550 | } |
551 | ||
552 | /* | |
553 | * C.2.6 Step 1 | |
554 | */ | |
d62a17ae | 555 | static int isis_spf_process_lsp(struct isis_spftree *spftree, |
556 | struct isis_lsp *lsp, uint32_t cost, | |
d7c0a89a | 557 | uint16_t depth, uint8_t *root_sysid, |
d62a17ae | 558 | struct isis_vertex *parent) |
eb5d44eb | 559 | { |
af8ac8f9 CF |
560 | bool pseudo_lsp = LSP_PSEUDO_ID(lsp->hdr.lsp_id); |
561 | struct listnode *fragnode = NULL; | |
d62a17ae | 562 | uint32_t dist; |
d62a17ae | 563 | enum vertextype vtype; |
d7c0a89a | 564 | static const uint8_t null_sysid[ISIS_SYS_ID_LEN]; |
af8ac8f9 | 565 | struct isis_mt_router_info *mt_router_info = NULL; |
321c1bbb | 566 | struct prefix_pair ip_info; |
af8ac8f9 CF |
567 | |
568 | if (!lsp->tlvs) | |
569 | return ISIS_OK; | |
d62a17ae | 570 | |
571 | if (spftree->mtid != ISIS_MT_IPV4_UNICAST) | |
af8ac8f9 CF |
572 | mt_router_info = isis_tlvs_lookup_mt_router_info(lsp->tlvs, |
573 | spftree->mtid); | |
d62a17ae | 574 | |
9d303b37 | 575 | if (!pseudo_lsp && (spftree->mtid == ISIS_MT_IPV4_UNICAST |
af8ac8f9 CF |
576 | && !speaks(lsp->tlvs->protocols_supported.protocols, |
577 | lsp->tlvs->protocols_supported.count, | |
578 | spftree->family)) | |
d62a17ae | 579 | && !mt_router_info) |
580 | return ISIS_OK; | |
eb5d44eb | 581 | |
39a275aa | 582 | /* RFC3787 section 4 SHOULD ignore overload bit in pseudo LSPs */ |
98c5bc15 CF |
583 | bool no_overload = (pseudo_lsp |
584 | || (spftree->mtid == ISIS_MT_IPV4_UNICAST | |
39a275aa | 585 | && !ISIS_MASK_LSP_OL_BIT(lsp->hdr.lsp_bits)) |
98c5bc15 | 586 | || (mt_router_info && !mt_router_info->overload)); |
39a275aa | 587 | |
f390d2c7 | 588 | lspfragloop: |
af8ac8f9 | 589 | if (lsp->hdr.seqno == 0) { |
d62a17ae | 590 | zlog_warn( |
591 | "isis_spf_process_lsp(): lsp with 0 seq_num - ignore"); | |
592 | return ISIS_WARNING; | |
593 | } | |
f390d2c7 | 594 | |
3f045a08 | 595 | #ifdef EXTREME_DEBUG |
d62a17ae | 596 | zlog_debug("ISIS-Spf: process_lsp %s", |
af8ac8f9 | 597 | print_sys_hostname(lsp->hdr.lsp_id)); |
3f045a08 JB |
598 | #endif /* EXTREME_DEBUG */ |
599 | ||
39a275aa | 600 | if (no_overload) { |
d62a17ae | 601 | if (pseudo_lsp || spftree->mtid == ISIS_MT_IPV4_UNICAST) { |
af8ac8f9 CF |
602 | struct isis_oldstyle_reach *r; |
603 | for (r = (struct isis_oldstyle_reach *) | |
604 | lsp->tlvs->oldstyle_reach.head; | |
605 | r; r = r->next) { | |
a2d41bb0 CF |
606 | if (fabricd) |
607 | continue; | |
608 | ||
d62a17ae | 609 | /* C.2.6 a) */ |
610 | /* Two way connectivity */ | |
af8ac8f9 | 611 | if (!memcmp(r->id, root_sysid, ISIS_SYS_ID_LEN)) |
d62a17ae | 612 | continue; |
613 | if (!pseudo_lsp | |
af8ac8f9 | 614 | && !memcmp(r->id, null_sysid, |
d62a17ae | 615 | ISIS_SYS_ID_LEN)) |
616 | continue; | |
af8ac8f9 | 617 | dist = cost + r->metric; |
d62a17ae | 618 | process_N(spftree, |
af8ac8f9 | 619 | LSP_PSEUDO_ID(r->id) |
d62a17ae | 620 | ? VTYPE_PSEUDO_IS |
621 | : VTYPE_NONPSEUDO_IS, | |
af8ac8f9 CF |
622 | (void *)r->id, dist, depth + 1, |
623 | parent); | |
d62a17ae | 624 | } |
625 | } | |
626 | ||
af8ac8f9 CF |
627 | struct isis_item_list *te_neighs = NULL; |
628 | if (pseudo_lsp || spftree->mtid == ISIS_MT_IPV4_UNICAST) | |
629 | te_neighs = &lsp->tlvs->extended_reach; | |
630 | else | |
631 | te_neighs = isis_lookup_mt_items(&lsp->tlvs->mt_reach, | |
632 | spftree->mtid); | |
633 | ||
634 | struct isis_extended_reach *er; | |
635 | for (er = te_neighs | |
636 | ? (struct isis_extended_reach *) | |
637 | te_neighs->head | |
638 | : NULL; | |
639 | er; er = er->next) { | |
640 | if (!memcmp(er->id, root_sysid, ISIS_SYS_ID_LEN)) | |
d62a17ae | 641 | continue; |
642 | if (!pseudo_lsp | |
af8ac8f9 | 643 | && !memcmp(er->id, null_sysid, ISIS_SYS_ID_LEN)) |
d62a17ae | 644 | continue; |
b30e837b | 645 | dist = cost + (spftree->hopcount_metric ? 1 : er->metric); |
d62a17ae | 646 | process_N(spftree, |
af8ac8f9 CF |
647 | LSP_PSEUDO_ID(er->id) ? VTYPE_PSEUDO_TE_IS |
648 | : VTYPE_NONPSEUDO_TE_IS, | |
649 | (void *)er->id, dist, depth + 1, parent); | |
d62a17ae | 650 | } |
f390d2c7 | 651 | } |
d62a17ae | 652 | |
3be6e411 | 653 | if (!fabricd && !pseudo_lsp && spftree->family == AF_INET |
d62a17ae | 654 | && spftree->mtid == ISIS_MT_IPV4_UNICAST) { |
af8ac8f9 CF |
655 | struct isis_item_list *reachs[] = { |
656 | &lsp->tlvs->oldstyle_ip_reach, | |
657 | &lsp->tlvs->oldstyle_ip_reach_ext}; | |
d62a17ae | 658 | |
d62a17ae | 659 | for (unsigned int i = 0; i < array_size(reachs); i++) { |
af8ac8f9 CF |
660 | vtype = i ? VTYPE_IPREACH_EXTERNAL |
661 | : VTYPE_IPREACH_INTERNAL; | |
662 | ||
321c1bbb CF |
663 | memset(&ip_info, 0, sizeof(ip_info)); |
664 | ip_info.dest.family = AF_INET; | |
665 | ||
af8ac8f9 CF |
666 | struct isis_oldstyle_ip_reach *r; |
667 | for (r = (struct isis_oldstyle_ip_reach *)reachs[i] | |
668 | ->head; | |
669 | r; r = r->next) { | |
670 | dist = cost + r->metric; | |
321c1bbb CF |
671 | ip_info.dest.u.prefix4 = r->prefix.prefix; |
672 | ip_info.dest.prefixlen = r->prefix.prefixlen; | |
673 | process_N(spftree, vtype, &ip_info, | |
af8ac8f9 | 674 | dist, depth + 1, parent); |
d62a17ae | 675 | } |
676 | } | |
f390d2c7 | 677 | } |
d62a17ae | 678 | |
679 | if (!pseudo_lsp && spftree->family == AF_INET) { | |
af8ac8f9 CF |
680 | struct isis_item_list *ipv4_reachs; |
681 | if (spftree->mtid == ISIS_MT_IPV4_UNICAST) | |
682 | ipv4_reachs = &lsp->tlvs->extended_ip_reach; | |
683 | else | |
684 | ipv4_reachs = isis_lookup_mt_items( | |
685 | &lsp->tlvs->mt_ip_reach, spftree->mtid); | |
686 | ||
321c1bbb CF |
687 | memset(&ip_info, 0, sizeof(ip_info)); |
688 | ip_info.dest.family = AF_INET; | |
689 | ||
af8ac8f9 CF |
690 | struct isis_extended_ip_reach *r; |
691 | for (r = ipv4_reachs | |
692 | ? (struct isis_extended_ip_reach *) | |
693 | ipv4_reachs->head | |
694 | : NULL; | |
695 | r; r = r->next) { | |
696 | dist = cost + r->metric; | |
321c1bbb CF |
697 | ip_info.dest.u.prefix4 = r->prefix.prefix; |
698 | ip_info.dest.prefixlen = r->prefix.prefixlen; | |
699 | process_N(spftree, VTYPE_IPREACH_TE, &ip_info, | |
d62a17ae | 700 | dist, depth + 1, parent); |
f390d2c7 | 701 | } |
f390d2c7 | 702 | } |
d62a17ae | 703 | |
704 | if (!pseudo_lsp && spftree->family == AF_INET6) { | |
af8ac8f9 CF |
705 | struct isis_item_list *ipv6_reachs; |
706 | if (spftree->mtid == ISIS_MT_IPV4_UNICAST) | |
707 | ipv6_reachs = &lsp->tlvs->ipv6_reach; | |
708 | else | |
709 | ipv6_reachs = isis_lookup_mt_items( | |
710 | &lsp->tlvs->mt_ipv6_reach, spftree->mtid); | |
711 | ||
712 | struct isis_ipv6_reach *r; | |
713 | for (r = ipv6_reachs | |
714 | ? (struct isis_ipv6_reach *)ipv6_reachs->head | |
715 | : NULL; | |
716 | r; r = r->next) { | |
717 | dist = cost + r->metric; | |
718 | vtype = r->external ? VTYPE_IP6REACH_EXTERNAL | |
719 | : VTYPE_IP6REACH_INTERNAL; | |
321c1bbb CF |
720 | memset(&ip_info, 0, sizeof(ip_info)); |
721 | ip_info.dest.family = AF_INET6; | |
722 | ip_info.dest.u.prefix6 = r->prefix.prefix; | |
723 | ip_info.dest.prefixlen = r->prefix.prefixlen; | |
724 | ||
725 | if (r->subtlvs | |
726 | && r->subtlvs->source_prefix | |
727 | && r->subtlvs->source_prefix->prefixlen) { | |
728 | if (spftree->tree_id != SPFTREE_DSTSRC) { | |
729 | char buff[VID2STR_BUFFER]; | |
730 | zlog_warn("Ignoring dest-src route %s in non dest-src topology", | |
731 | srcdest2str( | |
732 | &ip_info.dest, | |
733 | r->subtlvs->source_prefix, | |
734 | buff, sizeof(buff) | |
735 | ) | |
736 | ); | |
737 | continue; | |
738 | } | |
739 | ip_info.src = *r->subtlvs->source_prefix; | |
740 | } | |
741 | process_N(spftree, vtype, &ip_info, dist, | |
d62a17ae | 742 | depth + 1, parent); |
743 | } | |
f390d2c7 | 744 | } |
d62a17ae | 745 | |
746 | if (fragnode == NULL) | |
747 | fragnode = listhead(lsp->lspu.frags); | |
748 | else | |
749 | fragnode = listnextnode(fragnode); | |
750 | ||
751 | if (fragnode) { | |
752 | lsp = listgetdata(fragnode); | |
753 | goto lspfragloop; | |
754 | } | |
755 | ||
756 | return ISIS_OK; | |
757 | } | |
758 | ||
759 | static int isis_spf_preload_tent(struct isis_spftree *spftree, | |
d7c0a89a QY |
760 | uint8_t *root_sysid, |
761 | struct isis_vertex *parent) | |
d62a17ae | 762 | { |
763 | struct isis_circuit *circuit; | |
764 | struct listnode *cnode, *anode, *ipnode; | |
765 | struct isis_adjacency *adj; | |
766 | struct isis_lsp *lsp; | |
767 | struct list *adj_list; | |
768 | struct list *adjdb; | |
769 | struct prefix_ipv4 *ipv4; | |
321c1bbb | 770 | struct prefix_pair ip_info; |
d62a17ae | 771 | int retval = ISIS_OK; |
d7c0a89a QY |
772 | uint8_t lsp_id[ISIS_SYS_ID_LEN + 2]; |
773 | static uint8_t null_lsp_id[ISIS_SYS_ID_LEN + 2]; | |
d62a17ae | 774 | struct prefix_ipv6 *ipv6; |
775 | struct isis_circuit_mt_setting *circuit_mt; | |
776 | ||
777 | for (ALL_LIST_ELEMENTS_RO(spftree->area->circuit_list, cnode, | |
778 | circuit)) { | |
779 | circuit_mt = circuit_lookup_mt_setting(circuit, spftree->mtid); | |
780 | if (circuit_mt && !circuit_mt->enabled) | |
781 | continue; | |
782 | if (circuit->state != C_STATE_UP) | |
783 | continue; | |
784 | if (!(circuit->is_type & spftree->level)) | |
785 | continue; | |
786 | if (spftree->family == AF_INET && !circuit->ip_router) | |
787 | continue; | |
788 | if (spftree->family == AF_INET6 && !circuit->ipv6_router) | |
789 | continue; | |
790 | /* | |
791 | * Add IP(v6) addresses of this circuit | |
792 | */ | |
b30e837b | 793 | if (spftree->family == AF_INET && !spftree->hopcount_metric) { |
321c1bbb CF |
794 | memset(&ip_info, 0, sizeof(ip_info)); |
795 | ip_info.dest.family = AF_INET; | |
d62a17ae | 796 | for (ALL_LIST_ELEMENTS_RO(circuit->ip_addrs, ipnode, |
797 | ipv4)) { | |
321c1bbb CF |
798 | ip_info.dest.u.prefix4 = ipv4->prefix; |
799 | ip_info.dest.prefixlen = ipv4->prefixlen; | |
800 | apply_mask(&ip_info.dest); | |
d62a17ae | 801 | isis_spf_add_local(spftree, |
802 | VTYPE_IPREACH_INTERNAL, | |
321c1bbb | 803 | &ip_info, NULL, 0, parent); |
d62a17ae | 804 | } |
805 | } | |
b30e837b | 806 | if (spftree->family == AF_INET6 && !spftree->hopcount_metric) { |
321c1bbb CF |
807 | memset(&ip_info, 0, sizeof(ip_info)); |
808 | ip_info.dest.family = AF_INET6; | |
d62a17ae | 809 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_non_link, |
810 | ipnode, ipv6)) { | |
321c1bbb CF |
811 | ip_info.dest.u.prefix6 = ipv6->prefix; |
812 | ip_info.dest.prefixlen = ipv6->prefixlen; | |
813 | apply_mask(&ip_info.dest); | |
d62a17ae | 814 | isis_spf_add_local(spftree, |
815 | VTYPE_IP6REACH_INTERNAL, | |
321c1bbb | 816 | &ip_info, NULL, 0, parent); |
d62a17ae | 817 | } |
818 | } | |
819 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) { | |
820 | /* | |
821 | * Add the adjacencies | |
822 | */ | |
823 | adj_list = list_new(); | |
824 | adjdb = circuit->u.bc.adjdb[spftree->level - 1]; | |
825 | isis_adj_build_up_list(adjdb, adj_list); | |
826 | if (listcount(adj_list) == 0) { | |
6a154c88 | 827 | list_delete(&adj_list); |
d62a17ae | 828 | if (isis->debugs & DEBUG_SPF_EVENTS) |
829 | zlog_debug( | |
830 | "ISIS-Spf: no L%d adjacencies on circuit %s", | |
831 | spftree->level, | |
832 | circuit->interface->name); | |
833 | continue; | |
834 | } | |
835 | for (ALL_LIST_ELEMENTS_RO(adj_list, anode, adj)) { | |
836 | if (!adj_has_mt(adj, spftree->mtid)) | |
837 | continue; | |
838 | if (spftree->mtid == ISIS_MT_IPV4_UNICAST | |
af8ac8f9 CF |
839 | && !speaks(adj->nlpids.nlpids, |
840 | adj->nlpids.count, | |
841 | spftree->family)) | |
d62a17ae | 842 | continue; |
843 | switch (adj->sys_type) { | |
844 | case ISIS_SYSTYPE_ES: | |
845 | memcpy(lsp_id, adj->sysid, | |
846 | ISIS_SYS_ID_LEN); | |
847 | LSP_PSEUDO_ID(lsp_id) = 0; | |
848 | isis_spf_add_local( | |
849 | spftree, VTYPE_ES, lsp_id, adj, | |
b30e837b | 850 | spftree->hopcount_metric ? 1 : |
d62a17ae | 851 | circuit->te_metric |
852 | [spftree->level - 1], | |
853 | parent); | |
854 | break; | |
855 | case ISIS_SYSTYPE_IS: | |
856 | case ISIS_SYSTYPE_L1_IS: | |
857 | case ISIS_SYSTYPE_L2_IS: | |
858 | memcpy(lsp_id, adj->sysid, | |
859 | ISIS_SYS_ID_LEN); | |
860 | LSP_PSEUDO_ID(lsp_id) = 0; | |
861 | LSP_FRAGMENT(lsp_id) = 0; | |
862 | isis_spf_add_local( | |
863 | spftree, | |
864 | spftree->area->oldmetric | |
865 | ? VTYPE_NONPSEUDO_IS | |
866 | : VTYPE_NONPSEUDO_TE_IS, | |
867 | lsp_id, adj, | |
b30e837b | 868 | spftree->hopcount_metric ? 1 : |
d62a17ae | 869 | circuit->te_metric |
870 | [spftree->level - 1], | |
871 | parent); | |
872 | lsp = lsp_search( | |
873 | lsp_id, | |
874 | spftree->area | |
875 | ->lspdb[spftree->level | |
876 | - 1]); | |
877 | if (lsp == NULL | |
af8ac8f9 | 878 | || lsp->hdr.rem_lifetime == 0) |
d62a17ae | 879 | zlog_warn( |
880 | "ISIS-Spf: No LSP %s found for IS adjacency " | |
881 | "L%d on %s (ID %u)", | |
882 | rawlspid_print(lsp_id), | |
883 | spftree->level, | |
884 | circuit->interface->name, | |
885 | circuit->circuit_id); | |
886 | break; | |
887 | case ISIS_SYSTYPE_UNKNOWN: | |
888 | default: | |
889 | zlog_warn( | |
0437e105 | 890 | "isis_spf_preload_tent unknown adj type"); |
d62a17ae | 891 | } |
892 | } | |
6a154c88 | 893 | list_delete(&adj_list); |
d62a17ae | 894 | /* |
895 | * Add the pseudonode | |
896 | */ | |
897 | if (spftree->level == 1) | |
898 | memcpy(lsp_id, circuit->u.bc.l1_desig_is, | |
899 | ISIS_SYS_ID_LEN + 1); | |
900 | else | |
901 | memcpy(lsp_id, circuit->u.bc.l2_desig_is, | |
902 | ISIS_SYS_ID_LEN + 1); | |
903 | /* can happen during DR reboot */ | |
904 | if (memcmp(lsp_id, null_lsp_id, ISIS_SYS_ID_LEN + 1) | |
905 | == 0) { | |
906 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
907 | zlog_debug( | |
908 | "ISIS-Spf: No L%d DR on %s (ID %d)", | |
909 | spftree->level, | |
910 | circuit->interface->name, | |
911 | circuit->circuit_id); | |
912 | continue; | |
913 | } | |
914 | adj = isis_adj_lookup(lsp_id, adjdb); | |
915 | /* if no adj, we are the dis or error */ | |
916 | if (!adj && !circuit->u.bc.is_dr[spftree->level - 1]) { | |
917 | zlog_warn( | |
918 | "ISIS-Spf: No adjacency found from root " | |
919 | "to L%d DR %s on %s (ID %d)", | |
920 | spftree->level, rawlspid_print(lsp_id), | |
921 | circuit->interface->name, | |
922 | circuit->circuit_id); | |
923 | continue; | |
924 | } | |
925 | lsp = lsp_search( | |
926 | lsp_id, | |
927 | spftree->area->lspdb[spftree->level - 1]); | |
af8ac8f9 | 928 | if (lsp == NULL || lsp->hdr.rem_lifetime == 0) { |
d62a17ae | 929 | zlog_warn( |
930 | "ISIS-Spf: No lsp (%p) found from root " | |
931 | "to L%d DR %s on %s (ID %d)", | |
932 | (void *)lsp, spftree->level, | |
933 | rawlspid_print(lsp_id), | |
934 | circuit->interface->name, | |
935 | circuit->circuit_id); | |
936 | continue; | |
937 | } | |
b30e837b CF |
938 | isis_spf_process_lsp(spftree, lsp, |
939 | spftree->hopcount_metric ? | |
940 | 1 : circuit->te_metric[spftree->level - 1], | |
941 | 0, root_sysid, parent); | |
d62a17ae | 942 | } else if (circuit->circ_type == CIRCUIT_T_P2P) { |
943 | adj = circuit->u.p2p.neighbor; | |
44b89511 | 944 | if (!adj || adj->adj_state != ISIS_ADJ_UP) |
d62a17ae | 945 | continue; |
946 | if (!adj_has_mt(adj, spftree->mtid)) | |
947 | continue; | |
948 | switch (adj->sys_type) { | |
949 | case ISIS_SYSTYPE_ES: | |
950 | memcpy(lsp_id, adj->sysid, ISIS_SYS_ID_LEN); | |
951 | LSP_PSEUDO_ID(lsp_id) = 0; | |
952 | isis_spf_add_local( | |
953 | spftree, VTYPE_ES, lsp_id, adj, | |
b30e837b | 954 | spftree->hopcount_metric ? 1 : |
d62a17ae | 955 | circuit->te_metric[spftree->level - 1], |
956 | parent); | |
957 | break; | |
958 | case ISIS_SYSTYPE_IS: | |
959 | case ISIS_SYSTYPE_L1_IS: | |
960 | case ISIS_SYSTYPE_L2_IS: | |
961 | memcpy(lsp_id, adj->sysid, ISIS_SYS_ID_LEN); | |
962 | LSP_PSEUDO_ID(lsp_id) = 0; | |
963 | LSP_FRAGMENT(lsp_id) = 0; | |
964 | if (spftree->mtid != ISIS_MT_IPV4_UNICAST | |
af8ac8f9 CF |
965 | || speaks(adj->nlpids.nlpids, |
966 | adj->nlpids.count, | |
967 | spftree->family)) | |
d62a17ae | 968 | isis_spf_add_local( |
969 | spftree, | |
970 | spftree->area->oldmetric | |
971 | ? VTYPE_NONPSEUDO_IS | |
972 | : VTYPE_NONPSEUDO_TE_IS, | |
973 | lsp_id, adj, | |
b30e837b | 974 | spftree->hopcount_metric ? 1 : |
d62a17ae | 975 | circuit->te_metric |
976 | [spftree->level - 1], | |
977 | parent); | |
978 | break; | |
979 | case ISIS_SYSTYPE_UNKNOWN: | |
980 | default: | |
981 | zlog_warn( | |
982 | "isis_spf_preload_tent unknown adj type"); | |
983 | break; | |
984 | } | |
985 | } else if (circuit->circ_type == CIRCUIT_T_LOOPBACK) { | |
986 | continue; | |
987 | } else { | |
988 | zlog_warn("isis_spf_preload_tent unsupported media"); | |
989 | retval = ISIS_WARNING; | |
990 | } | |
f390d2c7 | 991 | } |
eb5d44eb | 992 | |
d62a17ae | 993 | return retval; |
eb5d44eb | 994 | } |
995 | ||
996 | /* | |
997 | * The parent(s) for vertex is set when added to TENT list | |
998 | * now we just put the child pointer(s) in place | |
999 | */ | |
d62a17ae | 1000 | static void add_to_paths(struct isis_spftree *spftree, |
1001 | struct isis_vertex *vertex) | |
eb5d44eb | 1002 | { |
321c1bbb | 1003 | char buff[VID2STR_BUFFER]; |
3f045a08 | 1004 | |
ae9c9aba | 1005 | if (isis_find_vertex(&spftree->paths, &vertex->N, vertex->type)) |
d62a17ae | 1006 | return; |
bded4060 | 1007 | isis_vertex_queue_append(&spftree->paths, vertex); |
eb5d44eb | 1008 | |
f390d2c7 | 1009 | #ifdef EXTREME_DEBUG |
d62a17ae | 1010 | zlog_debug("ISIS-Spf: added %s %s %s depth %d dist %d to PATHS", |
1011 | print_sys_hostname(vertex->N.id), vtype2string(vertex->type), | |
1012 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
1013 | vertex->d_N); | |
f390d2c7 | 1014 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 1015 | |
d62a17ae | 1016 | if (VTYPE_IP(vertex->type)) { |
1017 | if (listcount(vertex->Adj_N) > 0) | |
321c1bbb CF |
1018 | isis_route_create(&vertex->N.ip.dest, |
1019 | &vertex->N.ip.src, | |
d62a17ae | 1020 | vertex->d_N, vertex->depth, |
1021 | vertex->Adj_N, spftree->area, | |
3dace42d | 1022 | spftree->route_table); |
d62a17ae | 1023 | else if (isis->debugs & DEBUG_SPF_EVENTS) |
1024 | zlog_debug( | |
1025 | "ISIS-Spf: no adjacencies do not install route for " | |
1026 | "%s depth %d dist %d", | |
1027 | vid2string(vertex, buff, sizeof(buff)), | |
1028 | vertex->depth, vertex->d_N); | |
1029 | } | |
1030 | ||
1031 | return; | |
eb5d44eb | 1032 | } |
1033 | ||
d62a17ae | 1034 | static void init_spt(struct isis_spftree *spftree, int mtid, int level, |
b30e837b CF |
1035 | int family, enum spf_tree_id tree_id, |
1036 | bool hopcount_metric) | |
eb5d44eb | 1037 | { |
eb919f07 CF |
1038 | isis_vertex_queue_clear(&spftree->tents); |
1039 | isis_vertex_queue_clear(&spftree->paths); | |
d62a17ae | 1040 | |
1041 | spftree->mtid = mtid; | |
1042 | spftree->level = level; | |
1043 | spftree->family = family; | |
6d38d078 | 1044 | spftree->tree_id = tree_id; |
b30e837b CF |
1045 | spftree->hopcount_metric = hopcount_metric; |
1046 | } | |
1047 | ||
1048 | static void isis_spf_loop(struct isis_spftree *spftree, | |
1049 | uint8_t *root_sysid) | |
1050 | { | |
1051 | struct isis_vertex *vertex; | |
b30e837b CF |
1052 | struct isis_lsp *lsp; |
1053 | ||
1054 | while (isis_vertex_queue_count(&spftree->tents)) { | |
1055 | vertex = isis_vertex_queue_pop(&spftree->tents); | |
1056 | ||
1057 | #ifdef EXTREME_DEBUG | |
1058 | zlog_debug( | |
1059 | "ISIS-Spf: get TENT node %s %s depth %d dist %d to PATHS", | |
1060 | print_sys_hostname(vertex->N.id), | |
1061 | vtype2string(vertex->type), vertex->depth, vertex->d_N); | |
1062 | #endif /* EXTREME_DEBUG */ | |
1063 | ||
1064 | add_to_paths(spftree, vertex); | |
cbd8e49e CF |
1065 | if (!VTYPE_IS(vertex->type)) |
1066 | continue; | |
1067 | ||
1068 | lsp = lsp_for_vertex(spftree, vertex); | |
1069 | if (!lsp) { | |
1070 | zlog_warn("ISIS-Spf: No LSP found for %s", | |
883b4b86 A |
1071 | isis_format_id(vertex->N.id, |
1072 | sizeof(vertex->N.id))); | |
cbd8e49e | 1073 | continue; |
b30e837b | 1074 | } |
cbd8e49e CF |
1075 | |
1076 | isis_spf_process_lsp(spftree, lsp, vertex->d_N, vertex->depth, | |
1077 | root_sysid, vertex); | |
b30e837b CF |
1078 | } |
1079 | } | |
1080 | ||
1081 | struct isis_spftree *isis_run_hopcount_spf(struct isis_area *area, | |
1082 | uint8_t *sysid, | |
1083 | struct isis_spftree *spftree) | |
1084 | { | |
1085 | if (!spftree) | |
1086 | spftree = isis_spftree_new(area); | |
1087 | ||
1088 | init_spt(spftree, ISIS_MT_IPV4_UNICAST, ISIS_LEVEL2, | |
1089 | AF_INET, SPFTREE_IPV4, true); | |
1090 | if (!memcmp(sysid, isis->sysid, ISIS_SYS_ID_LEN)) { | |
1091 | /* If we are running locally, initialize with information from adjacencies */ | |
1092 | struct isis_vertex *root = isis_spf_add_root(spftree, sysid); | |
1093 | isis_spf_preload_tent(spftree, sysid, root); | |
1094 | } else { | |
1095 | isis_vertex_queue_insert(&spftree->tents, isis_vertex_new( | |
686afe9f CF |
1096 | spftree, sysid, |
1097 | VTYPE_NONPSEUDO_TE_IS)); | |
b30e837b CF |
1098 | } |
1099 | ||
1100 | isis_spf_loop(spftree, sysid); | |
1101 | ||
1102 | return spftree; | |
eb5d44eb | 1103 | } |
1104 | ||
6d38d078 CF |
1105 | static int isis_run_spf(struct isis_area *area, int level, |
1106 | enum spf_tree_id tree_id, | |
d7c0a89a | 1107 | uint8_t *sysid, struct timeval *nowtv) |
eb5d44eb | 1108 | { |
d62a17ae | 1109 | int retval = ISIS_OK; |
d62a17ae | 1110 | struct isis_vertex *root_vertex; |
6d38d078 | 1111 | struct isis_spftree *spftree = area->spftree[tree_id][level - 1]; |
d62a17ae | 1112 | struct timeval time_now; |
1113 | unsigned long long start_time, end_time; | |
6d38d078 | 1114 | uint16_t mtid = 0; |
d62a17ae | 1115 | |
1116 | /* Get time that can't roll backwards. */ | |
a699dd69 RZ |
1117 | start_time = nowtv->tv_sec; |
1118 | start_time = (start_time * 1000000) + nowtv->tv_usec; | |
d62a17ae | 1119 | |
6d38d078 CF |
1120 | int family = -1; |
1121 | switch (tree_id) { | |
1122 | case SPFTREE_IPV4: | |
1123 | family = AF_INET; | |
1124 | mtid = ISIS_MT_IPV4_UNICAST; | |
1125 | break; | |
1126 | case SPFTREE_IPV6: | |
1127 | family = AF_INET6; | |
1128 | mtid = isis_area_ipv6_topology(area); | |
1129 | break; | |
321c1bbb CF |
1130 | case SPFTREE_DSTSRC: |
1131 | family = AF_INET6; | |
1132 | mtid = ISIS_MT_IPV6_DSTSRC; | |
1133 | break; | |
6d38d078 CF |
1134 | case SPFTREE_COUNT: |
1135 | assert(!"isis_run_spf should never be called with SPFTREE_COUNT as argument!"); | |
1136 | return ISIS_WARNING; | |
1137 | } | |
1138 | ||
d62a17ae | 1139 | assert(spftree); |
1140 | assert(sysid); | |
1141 | ||
d62a17ae | 1142 | /* |
1143 | * C.2.5 Step 0 | |
1144 | */ | |
b30e837b | 1145 | init_spt(spftree, mtid, level, family, tree_id, false); |
d62a17ae | 1146 | /* a) */ |
1147 | root_vertex = isis_spf_add_root(spftree, sysid); | |
1148 | /* b) */ | |
1149 | retval = isis_spf_preload_tent(spftree, sysid, root_vertex); | |
1150 | if (retval != ISIS_OK) { | |
1151 | zlog_warn("ISIS-Spf: failed to load TENT SPF-root:%s", | |
1152 | print_sys_hostname(sysid)); | |
1153 | goto out; | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * C.2.7 Step 2 | |
1158 | */ | |
ce837d81 CF |
1159 | if (!isis_vertex_queue_count(&spftree->tents) |
1160 | && (isis->debugs & DEBUG_SPF_EVENTS)) { | |
d62a17ae | 1161 | zlog_warn("ISIS-Spf: TENT is empty SPF-root:%s", |
1162 | print_sys_hostname(sysid)); | |
d62a17ae | 1163 | } |
1164 | ||
b30e837b | 1165 | isis_spf_loop(spftree, sysid); |
13fb40ac | 1166 | out: |
d62a17ae | 1167 | spftree->runcount++; |
1168 | spftree->last_run_timestamp = time(NULL); | |
3dca3c8c | 1169 | spftree->last_run_monotime = monotime(&time_now); |
d62a17ae | 1170 | end_time = time_now.tv_sec; |
1171 | end_time = (end_time * 1000000) + time_now.tv_usec; | |
1172 | spftree->last_run_duration = end_time - start_time; | |
1173 | ||
1174 | return retval; | |
eb5d44eb | 1175 | } |
1176 | ||
3dace42d CF |
1177 | void isis_spf_verify_routes(struct isis_area *area, struct isis_spftree **trees) |
1178 | { | |
1179 | if (area->is_type == IS_LEVEL_1) { | |
1180 | isis_route_verify_table(area, trees[0]->route_table); | |
1181 | } else if (area->is_type == IS_LEVEL_2) { | |
1182 | isis_route_verify_table(area, trees[1]->route_table); | |
1183 | } else { | |
1184 | isis_route_verify_merge(area, trees[0]->route_table, | |
1185 | trees[1]->route_table); | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | void isis_spf_invalidate_routes(struct isis_spftree *tree) | |
1190 | { | |
1191 | isis_route_invalidate_table(tree->area, tree->route_table); | |
1192 | } | |
1193 | ||
d62a17ae | 1194 | static int isis_run_spf_cb(struct thread *thread) |
eb5d44eb | 1195 | { |
d62a17ae | 1196 | struct isis_spf_run *run = THREAD_ARG(thread); |
1197 | struct isis_area *area = run->area; | |
1198 | int level = run->level; | |
1199 | int retval = ISIS_OK; | |
1200 | ||
1201 | XFREE(MTYPE_ISIS_SPF_RUN, run); | |
1202 | area->spf_timer[level - 1] = NULL; | |
1203 | ||
1204 | if (!(area->is_type & level)) { | |
1205 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1206 | zlog_warn("ISIS-SPF (%s) area does not share level", | |
1207 | area->area_tag); | |
1208 | return ISIS_WARNING; | |
1209 | } | |
eb5d44eb | 1210 | |
3dace42d CF |
1211 | isis_area_invalidate_routes(area, level); |
1212 | ||
d62a17ae | 1213 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1214 | zlog_debug("ISIS-Spf (%s) L%d SPF needed, periodic SPF", | |
1215 | area->area_tag, level); | |
f390d2c7 | 1216 | |
d62a17ae | 1217 | if (area->ip_circuits) |
6d38d078 | 1218 | retval = isis_run_spf(area, level, SPFTREE_IPV4, isis->sysid, |
996c9314 | 1219 | &thread->real); |
d62a17ae | 1220 | if (area->ipv6_circuits) |
6d38d078 | 1221 | retval = isis_run_spf(area, level, SPFTREE_IPV6, isis->sysid, |
996c9314 | 1222 | &thread->real); |
321c1bbb CF |
1223 | if (area->ipv6_circuits |
1224 | && isis_area_ipv6_dstsrc_enabled(area)) | |
1225 | retval = isis_run_spf(area, level, SPFTREE_DSTSRC, isis->sysid, | |
1226 | &thread->real); | |
eb5d44eb | 1227 | |
3dace42d CF |
1228 | isis_area_verify_routes(area); |
1229 | ||
1230 | /* walk all circuits and reset any spf specific flags */ | |
1231 | struct listnode *node; | |
1232 | struct isis_circuit *circuit; | |
1233 | for (ALL_LIST_ELEMENTS_RO(area->circuit_list, node, circuit)) | |
1234 | UNSET_FLAG(circuit->flags, ISIS_CIRCUIT_FLAPPED_AFTER_SPF); | |
1235 | ||
b30e837b CF |
1236 | fabricd_run_spf(area); |
1237 | ||
d62a17ae | 1238 | return retval; |
eb5d44eb | 1239 | } |
1240 | ||
d62a17ae | 1241 | static struct isis_spf_run *isis_run_spf_arg(struct isis_area *area, int level) |
eb5d44eb | 1242 | { |
d62a17ae | 1243 | struct isis_spf_run *run = XMALLOC(MTYPE_ISIS_SPF_RUN, sizeof(*run)); |
1244 | ||
1245 | run->area = area; | |
1246 | run->level = level; | |
1247 | ||
1248 | return run; | |
eb5d44eb | 1249 | } |
eb5d44eb | 1250 | |
d62db30d CF |
1251 | int _isis_spf_schedule(struct isis_area *area, int level, |
1252 | const char *func, const char *file, int line) | |
eb5d44eb | 1253 | { |
be985ba0 | 1254 | struct isis_spftree *spftree = area->spftree[SPFTREE_IPV4][level - 1]; |
3dca3c8c CF |
1255 | time_t now = monotime(NULL); |
1256 | int diff = now - spftree->last_run_monotime; | |
d62a17ae | 1257 | |
1258 | assert(diff >= 0); | |
1259 | assert(area->is_type & level); | |
1260 | ||
d62db30d | 1261 | if (isis->debugs & DEBUG_SPF_EVENTS) { |
d62a17ae | 1262 | zlog_debug( |
d62db30d CF |
1263 | "ISIS-Spf (%s) L%d SPF schedule called, lastrun %d sec ago" |
1264 | " Caller: %s %s:%d", | |
1265 | area->area_tag, level, diff, func, file, line); | |
1266 | } | |
d62a17ae | 1267 | |
1268 | if (area->spf_delay_ietf[level - 1]) { | |
1269 | /* Need to call schedule function also if spf delay is running | |
1270 | * to | |
1271 | * restart holdoff timer - compare | |
1272 | * draft-ietf-rtgwg-backoff-algo-04 */ | |
1273 | long delay = | |
1274 | spf_backoff_schedule(area->spf_delay_ietf[level - 1]); | |
1275 | if (area->spf_timer[level - 1]) | |
1276 | return ISIS_OK; | |
1277 | ||
1278 | thread_add_timer_msec(master, isis_run_spf_cb, | |
1279 | isis_run_spf_arg(area, level), delay, | |
1280 | &area->spf_timer[level - 1]); | |
1281 | return ISIS_OK; | |
3f045a08 | 1282 | } |
d62a17ae | 1283 | |
1284 | if (area->spf_timer[level - 1]) | |
1285 | return ISIS_OK; | |
1286 | ||
1287 | /* wait configured min_spf_interval before doing the SPF */ | |
3dca3c8c | 1288 | long timer; |
d62a17ae | 1289 | if (diff >= area->min_spf_interval[level - 1]) { |
98c5bc15 | 1290 | /* Last run is more than min interval ago, schedule immediate run */ |
3dca3c8c CF |
1291 | timer = 0; |
1292 | } else { | |
1293 | timer = area->min_spf_interval[level - 1] - diff; | |
f390d2c7 | 1294 | } |
3f045a08 | 1295 | |
d62a17ae | 1296 | thread_add_timer(master, isis_run_spf_cb, isis_run_spf_arg(area, level), |
3dca3c8c | 1297 | timer, &area->spf_timer[level - 1]); |
d62a17ae | 1298 | |
1299 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
013b29d7 RZ |
1300 | zlog_debug("ISIS-Spf (%s) L%d SPF scheduled %ld sec from now", |
1301 | area->area_tag, level, timer); | |
d62a17ae | 1302 | |
1303 | return ISIS_OK; | |
1304 | } | |
1305 | ||
eb919f07 | 1306 | static void isis_print_paths(struct vty *vty, struct isis_vertex_queue *queue, |
d7c0a89a | 1307 | uint8_t *root_sysid) |
d62a17ae | 1308 | { |
1309 | struct listnode *node; | |
d62a17ae | 1310 | struct isis_vertex *vertex; |
321c1bbb | 1311 | char buff[VID2STR_BUFFER]; |
d62a17ae | 1312 | |
1313 | vty_out(vty, | |
1314 | "Vertex Type Metric Next-Hop Interface Parent\n"); | |
1315 | ||
eb919f07 | 1316 | for (ALL_QUEUE_ELEMENTS_RO(queue, node, vertex)) { |
d62a17ae | 1317 | if (memcmp(vertex->N.id, root_sysid, ISIS_SYS_ID_LEN) == 0) { |
1318 | vty_out(vty, "%-20s %-12s %-6s", | |
1319 | print_sys_hostname(root_sysid), "", ""); | |
af88c591 CF |
1320 | vty_out(vty, "%-30s\n", ""); |
1321 | continue; | |
d62a17ae | 1322 | } |
1323 | ||
af88c591 CF |
1324 | int rows = 0; |
1325 | struct listnode *anode = listhead(vertex->Adj_N); | |
1326 | struct listnode *pnode = listhead(vertex->parents); | |
1327 | struct isis_adjacency *adj; | |
1328 | struct isis_vertex *pvertex; | |
1329 | ||
1330 | vty_out(vty, "%-20s %-12s %-6u ", | |
1331 | vid2string(vertex, buff, sizeof(buff)), | |
1332 | vtype2string(vertex->type), vertex->d_N); | |
1230a82d A |
1333 | for (unsigned int i = 0; |
1334 | i < MAX(vertex->Adj_N ? listcount(vertex->Adj_N) : 0, | |
1335 | vertex->parents ? listcount(vertex->parents) : 0); | |
996c9314 | 1336 | i++) { |
af88c591 CF |
1337 | if (anode) { |
1338 | adj = listgetdata(anode); | |
1339 | anode = anode->next; | |
1340 | } else { | |
1341 | adj = NULL; | |
1342 | } | |
1343 | ||
1344 | if (pnode) { | |
1345 | pvertex = listgetdata(pnode); | |
1346 | pnode = pnode->next; | |
1347 | } else { | |
1348 | pvertex = NULL; | |
1349 | } | |
1350 | ||
1351 | if (rows) { | |
1352 | vty_out(vty, "\n"); | |
1353 | vty_out(vty, "%-20s %-12s %-6s ", "", "", ""); | |
1354 | } | |
1355 | ||
1356 | if (adj) { | |
1357 | vty_out(vty, "%-20s %-9s ", | |
1358 | print_sys_hostname(adj->sysid), | |
1359 | adj->circuit->interface->name); | |
1360 | } | |
1361 | ||
1362 | if (pvertex) { | |
1363 | if (!adj) | |
1364 | vty_out(vty, "%-20s %-9s ", "", ""); | |
1365 | ||
d62a17ae | 1366 | vty_out(vty, "%s(%d)", |
996c9314 | 1367 | vid2string(pvertex, buff, sizeof(buff)), |
d62a17ae | 1368 | pvertex->type); |
d62a17ae | 1369 | } |
d62a17ae | 1370 | |
af88c591 CF |
1371 | ++rows; |
1372 | } | |
d62a17ae | 1373 | vty_out(vty, "\n"); |
1374 | } | |
eb5d44eb | 1375 | } |
1376 | ||
321c1bbb CF |
1377 | static void isis_print_spftree(struct vty *vty, int level, |
1378 | struct isis_area *area, | |
1379 | enum spf_tree_id tree_id) | |
1380 | { | |
1381 | const char *tree_id_text = NULL; | |
1382 | ||
1383 | switch (tree_id) { | |
1384 | case SPFTREE_IPV4: | |
1385 | tree_id_text = "that speak IP"; | |
1386 | break; | |
1387 | case SPFTREE_IPV6: | |
1388 | tree_id_text = "that speak IPv6"; | |
1389 | break; | |
1390 | case SPFTREE_DSTSRC: | |
1391 | tree_id_text = "that support IPv6 dst-src routing"; | |
1392 | break; | |
1393 | case SPFTREE_COUNT: | |
1394 | assert(!"isis_print_spftree shouldn't be called with SPFTREE_COUNT as type"); | |
1395 | return; | |
1396 | } | |
1397 | ||
1398 | if (!area->spftree[tree_id][level - 1] | |
1399 | || !isis_vertex_queue_count( | |
1400 | &area->spftree[tree_id][level - 1]->paths)) | |
1401 | return; | |
1402 | ||
1403 | vty_out(vty, "IS-IS paths to level-%d routers %s\n", | |
1404 | level, tree_id_text); | |
1405 | isis_print_paths(vty, &area->spftree[tree_id][level - 1]->paths, | |
1406 | isis->sysid); | |
1407 | vty_out(vty, "\n"); | |
1408 | } | |
1409 | ||
eb5d44eb | 1410 | DEFUN (show_isis_topology, |
1411 | show_isis_topology_cmd, | |
ef020087 CF |
1412 | "show " PROTO_NAME " topology" |
1413 | #ifndef FABRICD | |
1414 | " [<level-1|level-2>]" | |
1415 | #endif | |
1416 | , SHOW_STR | |
7c0cbd0e | 1417 | PROTO_HELP |
1b49e4f0 | 1418 | "IS-IS paths to Intermediate Systems\n" |
ef020087 | 1419 | #ifndef FABRICD |
1b49e4f0 | 1420 | "Paths to all level-1 routers in the area\n" |
ef020087 CF |
1421 | "Paths to all level-2 routers in the domain\n" |
1422 | #endif | |
1423 | ) | |
eb5d44eb | 1424 | { |
d62a17ae | 1425 | int levels; |
1426 | struct listnode *node; | |
1427 | struct isis_area *area; | |
1428 | ||
1429 | if (argc < 4) | |
1430 | levels = ISIS_LEVEL1 | ISIS_LEVEL2; | |
1431 | else if (strmatch(argv[3]->text, "level-1")) | |
1432 | levels = ISIS_LEVEL1; | |
1433 | else | |
1434 | levels = ISIS_LEVEL2; | |
1435 | ||
1436 | if (!isis->area_list || isis->area_list->count == 0) | |
1437 | return CMD_SUCCESS; | |
1438 | ||
1439 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) { | |
1440 | vty_out(vty, "Area %s:\n", | |
1441 | area->area_tag ? area->area_tag : "null"); | |
1442 | ||
1443 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVELS; level++) { | |
1444 | if ((level & levels) == 0) | |
1445 | continue; | |
1446 | ||
321c1bbb CF |
1447 | if (area->ip_circuits > 0) { |
1448 | isis_print_spftree(vty, level, area, | |
1449 | SPFTREE_IPV4); | |
d62a17ae | 1450 | } |
321c1bbb CF |
1451 | if (area->ipv6_circuits > 0) { |
1452 | isis_print_spftree(vty, level, area, | |
1453 | SPFTREE_IPV6); | |
1454 | } | |
1455 | if (isis_area_ipv6_dstsrc_enabled(area)) { | |
1456 | isis_print_spftree(vty, level, area, | |
1457 | SPFTREE_DSTSRC); | |
d62a17ae | 1458 | } |
1459 | } | |
f390d2c7 | 1460 | |
b30e837b CF |
1461 | if (fabricd_spftree(area)) { |
1462 | vty_out(vty, | |
1463 | "IS-IS paths to level-2 routers with hop-by-hop metric\n"); | |
1464 | isis_print_paths(vty, &fabricd_spftree(area)->paths, isis->sysid); | |
1465 | vty_out(vty, "\n"); | |
1466 | } | |
1467 | ||
d62a17ae | 1468 | vty_out(vty, "\n"); |
f390d2c7 | 1469 | } |
3f045a08 | 1470 | |
d62a17ae | 1471 | return CMD_SUCCESS; |
f390d2c7 | 1472 | } |
eb5d44eb | 1473 | |
4d762f26 | 1474 | void isis_spf_cmds_init(void) |
eb5d44eb | 1475 | { |
d62a17ae | 1476 | install_element(VIEW_NODE, &show_isis_topology_cmd); |
eb5d44eb | 1477 | } |
02cd317e CF |
1478 | |
1479 | void isis_spf_print(struct isis_spftree *spftree, struct vty *vty) | |
1480 | { | |
1481 | vty_out(vty, " last run elapsed : "); | |
1482 | vty_out_timestr(vty, spftree->last_run_timestamp); | |
1483 | vty_out(vty, "\n"); | |
1484 | ||
1485 | vty_out(vty, " last run duration : %u usec\n", | |
d7c0a89a | 1486 | (uint32_t)spftree->last_run_duration); |
02cd317e | 1487 | |
996c9314 | 1488 | vty_out(vty, " run count : %u\n", spftree->runcount); |
02cd317e | 1489 | } |