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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 | ||
321c1bbb | 165 | #define VID2STR_BUFFER SRCDEST2STR_BUFFER |
d62a17ae | 166 | static const char *vid2string(struct isis_vertex *vertex, char *buff, int size) |
eb5d44eb | 167 | { |
d62a17ae | 168 | if (VTYPE_IS(vertex->type) || VTYPE_ES(vertex->type)) { |
169 | return print_sys_hostname(vertex->N.id); | |
170 | } | |
171 | ||
172 | if (VTYPE_IP(vertex->type)) { | |
321c1bbb CF |
173 | srcdest2str(&vertex->N.ip.dest, |
174 | &vertex->N.ip.src, | |
175 | buff, size); | |
d62a17ae | 176 | return buff; |
177 | } | |
178 | ||
179 | return "UNKNOWN"; | |
eb5d44eb | 180 | } |
181 | ||
686afe9f CF |
182 | static struct isis_vertex *isis_vertex_new(struct isis_spftree *spftree, |
183 | union isis_N *n, | |
ae9c9aba | 184 | enum vertextype vtype) |
eb919f07 CF |
185 | { |
186 | struct isis_vertex *vertex; | |
187 | ||
188 | vertex = XCALLOC(MTYPE_ISIS_VERTEX, sizeof(struct isis_vertex)); | |
189 | ||
ae9c9aba | 190 | isis_vertex_id_init(vertex, n, vtype); |
d62a17ae | 191 | |
192 | vertex->Adj_N = list_new(); | |
193 | vertex->parents = list_new(); | |
d62a17ae | 194 | |
686afe9f CF |
195 | if (spftree->hopcount_metric) { |
196 | vertex->firsthops = hash_create(isis_vertex_queue_hash_key, | |
197 | isis_vertex_queue_hash_cmp, | |
198 | NULL); | |
199 | } | |
200 | ||
d62a17ae | 201 | return vertex; |
eb5d44eb | 202 | } |
203 | ||
d62a17ae | 204 | static void isis_vertex_adj_del(struct isis_vertex *vertex, |
205 | struct isis_adjacency *adj) | |
3f045a08 | 206 | { |
d62a17ae | 207 | struct listnode *node, *nextnode; |
208 | if (!vertex) | |
209 | return; | |
210 | for (node = listhead(vertex->Adj_N); node; node = nextnode) { | |
211 | nextnode = listnextnode(node); | |
212 | if (listgetdata(node) == adj) | |
213 | list_delete_node(vertex->Adj_N, node); | |
214 | } | |
215 | return; | |
3f045a08 JB |
216 | } |
217 | ||
d62a17ae | 218 | struct isis_spftree *isis_spftree_new(struct isis_area *area) |
3f045a08 | 219 | { |
d62a17ae | 220 | struct isis_spftree *tree; |
221 | ||
222 | tree = XCALLOC(MTYPE_ISIS_SPFTREE, sizeof(struct isis_spftree)); | |
d62a17ae | 223 | |
bded4060 CF |
224 | isis_vertex_queue_init(&tree->tents, "IS-IS SPF tents", true); |
225 | isis_vertex_queue_init(&tree->paths, "IS-IS SPF paths", false); | |
321c1bbb | 226 | tree->route_table = srcdest_table_init(); |
d62a17ae | 227 | tree->area = area; |
228 | tree->last_run_timestamp = 0; | |
3dca3c8c | 229 | tree->last_run_monotime = 0; |
d62a17ae | 230 | tree->last_run_duration = 0; |
231 | tree->runcount = 0; | |
232 | return tree; | |
3f045a08 JB |
233 | } |
234 | ||
d62a17ae | 235 | void isis_spftree_del(struct isis_spftree *spftree) |
eb5d44eb | 236 | { |
eb919f07 CF |
237 | isis_vertex_queue_free(&spftree->tents); |
238 | isis_vertex_queue_free(&spftree->paths); | |
3dace42d CF |
239 | route_table_finish(spftree->route_table); |
240 | spftree->route_table = NULL; | |
eb5d44eb | 241 | |
3dace42d | 242 | XFREE(MTYPE_ISIS_SPFTREE, spftree); |
d62a17ae | 243 | return; |
eb5d44eb | 244 | } |
3f045a08 | 245 | |
d62a17ae | 246 | static void isis_spftree_adj_del(struct isis_spftree *spftree, |
247 | struct isis_adjacency *adj) | |
3f045a08 | 248 | { |
d62a17ae | 249 | struct listnode *node; |
eb919f07 | 250 | struct isis_vertex *v; |
d62a17ae | 251 | if (!adj) |
252 | return; | |
bded4060 | 253 | assert(!isis_vertex_queue_count(&spftree->tents)); |
eb919f07 CF |
254 | for (ALL_QUEUE_ELEMENTS_RO(&spftree->paths, node, v)) |
255 | isis_vertex_adj_del(v, adj); | |
d62a17ae | 256 | return; |
3f045a08 | 257 | } |
eb5d44eb | 258 | |
d62a17ae | 259 | void spftree_area_init(struct isis_area *area) |
eb5d44eb | 260 | { |
be985ba0 CF |
261 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
262 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
263 | if (!(area->is_type & level)) | |
264 | continue; | |
265 | if (area->spftree[tree][level - 1]) | |
266 | continue; | |
d62a17ae | 267 | |
be985ba0 CF |
268 | area->spftree[tree][level - 1] = isis_spftree_new(area); |
269 | } | |
d62a17ae | 270 | } |
eb5d44eb | 271 | } |
272 | ||
d62a17ae | 273 | void spftree_area_del(struct isis_area *area) |
eb5d44eb | 274 | { |
be985ba0 CF |
275 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
276 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
277 | if (!(area->is_type & level)) | |
278 | continue; | |
279 | if (!area->spftree[tree][level - 1]) | |
280 | continue; | |
d62a17ae | 281 | |
be985ba0 | 282 | isis_spftree_del(area->spftree[tree][level - 1]); |
d62a17ae | 283 | } |
284 | } | |
3f045a08 | 285 | } |
f390d2c7 | 286 | |
d62a17ae | 287 | void spftree_area_adj_del(struct isis_area *area, struct isis_adjacency *adj) |
3f045a08 | 288 | { |
be985ba0 CF |
289 | for (int tree = SPFTREE_IPV4; tree < SPFTREE_COUNT; tree++) { |
290 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
291 | if (!(area->is_type & level)) | |
292 | continue; | |
293 | if (!area->spftree[tree][level - 1]) | |
294 | continue; | |
295 | isis_spftree_adj_del(area->spftree[tree][level - 1], | |
296 | adj); | |
297 | } | |
d62a17ae | 298 | } |
b30e837b CF |
299 | |
300 | if (fabricd_spftree(area) != NULL) | |
301 | isis_spftree_adj_del(fabricd_spftree(area), adj); | |
3f045a08 JB |
302 | } |
303 | ||
d62a17ae | 304 | /* |
305 | * Find the system LSP: returns the LSP in our LSP database | |
3f045a08 JB |
306 | * associated with the given system ID. |
307 | */ | |
d62a17ae | 308 | static struct isis_lsp *isis_root_system_lsp(struct isis_area *area, int level, |
d7c0a89a | 309 | uint8_t *sysid) |
3f045a08 | 310 | { |
d62a17ae | 311 | struct isis_lsp *lsp; |
d7c0a89a | 312 | uint8_t lspid[ISIS_SYS_ID_LEN + 2]; |
d62a17ae | 313 | |
314 | memcpy(lspid, sysid, ISIS_SYS_ID_LEN); | |
315 | LSP_PSEUDO_ID(lspid) = 0; | |
316 | LSP_FRAGMENT(lspid) = 0; | |
317 | lsp = lsp_search(lspid, area->lspdb[level - 1]); | |
af8ac8f9 | 318 | if (lsp && lsp->hdr.rem_lifetime != 0) |
d62a17ae | 319 | return lsp; |
320 | return NULL; | |
eb5d44eb | 321 | } |
322 | ||
323 | /* | |
324 | * Add this IS to the root of SPT | |
325 | */ | |
d62a17ae | 326 | static struct isis_vertex *isis_spf_add_root(struct isis_spftree *spftree, |
d7c0a89a | 327 | uint8_t *sysid) |
eb5d44eb | 328 | { |
d62a17ae | 329 | struct isis_vertex *vertex; |
330 | struct isis_lsp *lsp; | |
eb5d44eb | 331 | #ifdef EXTREME_DEBUG |
321c1bbb | 332 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 333 | #endif /* EXTREME_DEBUG */ |
ae9c9aba | 334 | union isis_N n; |
f390d2c7 | 335 | |
ae9c9aba | 336 | memcpy(n.id, sysid, ISIS_SYS_ID_LEN); |
337 | LSP_PSEUDO_ID(n.id) = 0; | |
f390d2c7 | 338 | |
d62a17ae | 339 | lsp = isis_root_system_lsp(spftree->area, spftree->level, sysid); |
340 | if (lsp == NULL) | |
341 | zlog_warn("ISIS-Spf: could not find own l%d LSP!", | |
342 | spftree->level); | |
eb5d44eb | 343 | |
686afe9f | 344 | vertex = isis_vertex_new(spftree, &n, |
9d303b37 DL |
345 | spftree->area->oldmetric |
346 | ? VTYPE_NONPSEUDO_IS | |
347 | : VTYPE_NONPSEUDO_TE_IS); | |
bded4060 | 348 | isis_vertex_queue_append(&spftree->paths, vertex); |
eb5d44eb | 349 | |
350 | #ifdef EXTREME_DEBUG | |
d62a17ae | 351 | zlog_debug("ISIS-Spf: added this IS %s %s depth %d dist %d to PATHS", |
352 | vtype2string(vertex->type), | |
353 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
354 | vertex->d_N); | |
eb5d44eb | 355 | #endif /* EXTREME_DEBUG */ |
356 | ||
d62a17ae | 357 | return vertex; |
eb5d44eb | 358 | } |
359 | ||
686afe9f CF |
360 | static void vertex_add_parent_firsthop(struct hash_backet *backet, void *arg) |
361 | { | |
362 | struct isis_vertex *vertex = arg; | |
363 | struct isis_vertex *hop = backet->data; | |
364 | ||
365 | hash_get(vertex->firsthops, hop, hash_alloc_intern); | |
366 | } | |
367 | ||
368 | static void vertex_update_firsthops(struct isis_vertex *vertex, | |
369 | struct isis_vertex *parent) | |
370 | { | |
371 | if (vertex->d_N <= 2) | |
372 | hash_get(vertex->firsthops, vertex, hash_alloc_intern); | |
373 | ||
374 | if (vertex->d_N < 2 || !parent) | |
375 | return; | |
376 | ||
377 | hash_iterate(parent->firsthops, vertex_add_parent_firsthop, vertex); | |
378 | } | |
379 | ||
eb5d44eb | 380 | /* |
381 | * Add a vertex to TENT sorted by cost and by vertextype on tie break situation | |
382 | */ | |
d62a17ae | 383 | static struct isis_vertex *isis_spf_add2tent(struct isis_spftree *spftree, |
384 | enum vertextype vtype, void *id, | |
385 | uint32_t cost, int depth, | |
386 | struct isis_adjacency *adj, | |
387 | struct isis_vertex *parent) | |
eb5d44eb | 388 | { |
eb919f07 | 389 | struct isis_vertex *vertex; |
d62a17ae | 390 | struct listnode *node; |
391 | struct isis_adjacency *parent_adj; | |
f390d2c7 | 392 | #ifdef EXTREME_DEBUG |
321c1bbb | 393 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 394 | #endif |
395 | ||
eb919f07 CF |
396 | assert(isis_find_vertex(&spftree->paths, id, vtype) == NULL); |
397 | assert(isis_find_vertex(&spftree->tents, id, vtype) == NULL); | |
686afe9f | 398 | vertex = isis_vertex_new(spftree, id, vtype); |
d62a17ae | 399 | vertex->d_N = cost; |
400 | vertex->depth = depth; | |
401 | ||
402 | if (parent) { | |
403 | listnode_add(vertex->parents, parent); | |
d62a17ae | 404 | } |
405 | ||
686afe9f CF |
406 | if (spftree->hopcount_metric) |
407 | vertex_update_firsthops(vertex, parent); | |
408 | ||
d62a17ae | 409 | if (parent && parent->Adj_N && listcount(parent->Adj_N) > 0) { |
410 | for (ALL_LIST_ELEMENTS_RO(parent->Adj_N, node, parent_adj)) | |
411 | listnode_add(vertex->Adj_N, parent_adj); | |
412 | } else if (adj) { | |
413 | listnode_add(vertex->Adj_N, adj); | |
414 | } | |
3f045a08 | 415 | |
f390d2c7 | 416 | #ifdef EXTREME_DEBUG |
d62a17ae | 417 | zlog_debug( |
418 | "ISIS-Spf: add to TENT %s %s %s depth %d dist %d adjcount %d", | |
419 | print_sys_hostname(vertex->N.id), vtype2string(vertex->type), | |
420 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
421 | vertex->d_N, listcount(vertex->Adj_N)); | |
eb5d44eb | 422 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 423 | |
eb919f07 | 424 | isis_vertex_queue_insert(&spftree->tents, vertex); |
d62a17ae | 425 | return vertex; |
426 | } | |
427 | ||
428 | static void isis_spf_add_local(struct isis_spftree *spftree, | |
429 | enum vertextype vtype, void *id, | |
430 | struct isis_adjacency *adj, uint32_t cost, | |
431 | struct isis_vertex *parent) | |
432 | { | |
433 | struct isis_vertex *vertex; | |
434 | ||
eb919f07 | 435 | vertex = isis_find_vertex(&spftree->tents, id, vtype); |
d62a17ae | 436 | |
437 | if (vertex) { | |
438 | /* C.2.5 c) */ | |
439 | if (vertex->d_N == cost) { | |
440 | if (adj) | |
441 | listnode_add(vertex->Adj_N, adj); | |
442 | /* d) */ | |
443 | if (listcount(vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
444 | remove_excess_adjs(vertex->Adj_N); | |
9d303b37 DL |
445 | if (parent && (listnode_lookup(vertex->parents, parent) |
446 | == NULL)) | |
d62a17ae | 447 | listnode_add(vertex->parents, parent); |
d62a17ae | 448 | return; |
449 | } else if (vertex->d_N < cost) { | |
450 | /* e) do nothing */ | |
451 | return; | |
452 | } else { /* vertex->d_N > cost */ | |
453 | /* f) */ | |
eb919f07 | 454 | isis_vertex_queue_delete(&spftree->tents, vertex); |
d62a17ae | 455 | isis_vertex_del(vertex); |
456 | } | |
f390d2c7 | 457 | } |
d62a17ae | 458 | |
459 | isis_spf_add2tent(spftree, vtype, id, cost, 1, adj, parent); | |
460 | return; | |
eb5d44eb | 461 | } |
462 | ||
d62a17ae | 463 | static void process_N(struct isis_spftree *spftree, enum vertextype vtype, |
464 | void *id, uint32_t dist, uint16_t depth, | |
465 | struct isis_vertex *parent) | |
eb5d44eb | 466 | { |
d62a17ae | 467 | struct isis_vertex *vertex; |
eb5d44eb | 468 | #ifdef EXTREME_DEBUG |
321c1bbb | 469 | char buff[VID2STR_BUFFER]; |
eb5d44eb | 470 | #endif |
471 | ||
d62a17ae | 472 | assert(spftree && parent); |
473 | ||
b30e837b CF |
474 | if (spftree->hopcount_metric |
475 | && !VTYPE_IS(vtype)) | |
476 | return; | |
477 | ||
321c1bbb | 478 | struct prefix_pair p; |
af8ac8f9 | 479 | if (vtype >= VTYPE_IPREACH_INTERNAL) { |
321c1bbb CF |
480 | memcpy(&p, id, sizeof(p)); |
481 | apply_mask(&p.dest); | |
482 | apply_mask((struct prefix *)&p.src); | |
af8ac8f9 CF |
483 | id = &p; |
484 | } | |
485 | ||
d62a17ae | 486 | /* RFC3787 section 5.1 */ |
487 | if (spftree->area->newmetric == 1) { | |
488 | if (dist > MAX_WIDE_PATH_METRIC) | |
489 | return; | |
490 | } | |
491 | /* C.2.6 b) */ | |
492 | else if (spftree->area->oldmetric == 1) { | |
493 | if (dist > MAX_NARROW_PATH_METRIC) | |
494 | return; | |
495 | } | |
496 | ||
497 | /* c) */ | |
eb919f07 | 498 | vertex = isis_find_vertex(&spftree->paths, id, vtype); |
d62a17ae | 499 | if (vertex) { |
eb5d44eb | 500 | #ifdef EXTREME_DEBUG |
d62a17ae | 501 | zlog_debug( |
502 | "ISIS-Spf: process_N %s %s %s dist %d already found from PATH", | |
503 | print_sys_hostname(vertex->N.id), vtype2string(vtype), | |
504 | vid2string(vertex, buff, sizeof(buff)), dist); | |
eb5d44eb | 505 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 506 | assert(dist >= vertex->d_N); |
507 | return; | |
508 | } | |
509 | ||
eb919f07 | 510 | vertex = isis_find_vertex(&spftree->tents, id, vtype); |
d62a17ae | 511 | /* d) */ |
512 | if (vertex) { | |
513 | /* 1) */ | |
eb5d44eb | 514 | #ifdef EXTREME_DEBUG |
d62a17ae | 515 | zlog_debug( |
516 | "ISIS-Spf: process_N %s %s %s dist %d parent %s adjcount %d", | |
517 | print_sys_hostname(vertex->N.id), vtype2string(vtype), | |
518 | vid2string(vertex, buff, sizeof(buff)), dist, | |
519 | (parent ? print_sys_hostname(parent->N.id) : "null"), | |
520 | (parent ? listcount(parent->Adj_N) : 0)); | |
eb5d44eb | 521 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 522 | if (vertex->d_N == dist) { |
523 | struct listnode *node; | |
524 | struct isis_adjacency *parent_adj; | |
525 | for (ALL_LIST_ELEMENTS_RO(parent->Adj_N, node, | |
526 | parent_adj)) | |
527 | if (listnode_lookup(vertex->Adj_N, parent_adj) | |
528 | == NULL) | |
529 | listnode_add(vertex->Adj_N, parent_adj); | |
686afe9f CF |
530 | if (spftree->hopcount_metric) |
531 | vertex_update_firsthops(vertex, parent); | |
d62a17ae | 532 | /* 2) */ |
533 | if (listcount(vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
534 | remove_excess_adjs(vertex->Adj_N); | |
535 | if (listnode_lookup(vertex->parents, parent) == NULL) | |
536 | listnode_add(vertex->parents, parent); | |
d62a17ae | 537 | return; |
538 | } else if (vertex->d_N < dist) { | |
539 | return; | |
540 | /* 4) */ | |
541 | } else { | |
eb919f07 | 542 | isis_vertex_queue_delete(&spftree->tents, vertex); |
d62a17ae | 543 | isis_vertex_del(vertex); |
544 | } | |
f390d2c7 | 545 | } |
f390d2c7 | 546 | |
3f045a08 | 547 | #ifdef EXTREME_DEBUG |
d62a17ae | 548 | zlog_debug("ISIS-Spf: process_N add2tent %s %s dist %d parent %s", |
549 | print_sys_hostname(id), vtype2string(vtype), dist, | |
550 | (parent ? print_sys_hostname(parent->N.id) : "null")); | |
3f045a08 JB |
551 | #endif /* EXTREME_DEBUG */ |
552 | ||
d62a17ae | 553 | isis_spf_add2tent(spftree, vtype, id, dist, depth, NULL, parent); |
554 | return; | |
eb5d44eb | 555 | } |
556 | ||
557 | /* | |
558 | * C.2.6 Step 1 | |
559 | */ | |
d62a17ae | 560 | static int isis_spf_process_lsp(struct isis_spftree *spftree, |
561 | struct isis_lsp *lsp, uint32_t cost, | |
d7c0a89a | 562 | uint16_t depth, uint8_t *root_sysid, |
d62a17ae | 563 | struct isis_vertex *parent) |
eb5d44eb | 564 | { |
af8ac8f9 CF |
565 | bool pseudo_lsp = LSP_PSEUDO_ID(lsp->hdr.lsp_id); |
566 | struct listnode *fragnode = NULL; | |
d62a17ae | 567 | uint32_t dist; |
d62a17ae | 568 | enum vertextype vtype; |
d7c0a89a | 569 | static const uint8_t null_sysid[ISIS_SYS_ID_LEN]; |
af8ac8f9 | 570 | struct isis_mt_router_info *mt_router_info = NULL; |
321c1bbb | 571 | struct prefix_pair ip_info; |
af8ac8f9 CF |
572 | |
573 | if (!lsp->tlvs) | |
574 | return ISIS_OK; | |
d62a17ae | 575 | |
576 | if (spftree->mtid != ISIS_MT_IPV4_UNICAST) | |
af8ac8f9 CF |
577 | mt_router_info = isis_tlvs_lookup_mt_router_info(lsp->tlvs, |
578 | spftree->mtid); | |
d62a17ae | 579 | |
9d303b37 | 580 | if (!pseudo_lsp && (spftree->mtid == ISIS_MT_IPV4_UNICAST |
af8ac8f9 CF |
581 | && !speaks(lsp->tlvs->protocols_supported.protocols, |
582 | lsp->tlvs->protocols_supported.count, | |
583 | spftree->family)) | |
d62a17ae | 584 | && !mt_router_info) |
585 | return ISIS_OK; | |
eb5d44eb | 586 | |
39a275aa | 587 | /* RFC3787 section 4 SHOULD ignore overload bit in pseudo LSPs */ |
98c5bc15 CF |
588 | bool no_overload = (pseudo_lsp |
589 | || (spftree->mtid == ISIS_MT_IPV4_UNICAST | |
39a275aa | 590 | && !ISIS_MASK_LSP_OL_BIT(lsp->hdr.lsp_bits)) |
98c5bc15 | 591 | || (mt_router_info && !mt_router_info->overload)); |
39a275aa | 592 | |
f390d2c7 | 593 | lspfragloop: |
af8ac8f9 | 594 | if (lsp->hdr.seqno == 0) { |
d62a17ae | 595 | zlog_warn( |
596 | "isis_spf_process_lsp(): lsp with 0 seq_num - ignore"); | |
597 | return ISIS_WARNING; | |
598 | } | |
f390d2c7 | 599 | |
3f045a08 | 600 | #ifdef EXTREME_DEBUG |
d62a17ae | 601 | zlog_debug("ISIS-Spf: process_lsp %s", |
af8ac8f9 | 602 | print_sys_hostname(lsp->hdr.lsp_id)); |
3f045a08 JB |
603 | #endif /* EXTREME_DEBUG */ |
604 | ||
39a275aa | 605 | if (no_overload) { |
d62a17ae | 606 | if (pseudo_lsp || spftree->mtid == ISIS_MT_IPV4_UNICAST) { |
af8ac8f9 CF |
607 | struct isis_oldstyle_reach *r; |
608 | for (r = (struct isis_oldstyle_reach *) | |
609 | lsp->tlvs->oldstyle_reach.head; | |
610 | r; r = r->next) { | |
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 | |
655 | if (!pseudo_lsp && spftree->family == AF_INET | |
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) { | |
affe9e99 | 829 | list_delete_and_null(&adj_list); |
d62a17ae | 830 | if (isis->debugs & DEBUG_SPF_EVENTS) |
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( | |
875 | lsp_id, | |
876 | spftree->area | |
877 | ->lspdb[spftree->level | |
878 | - 1]); | |
879 | if (lsp == NULL | |
af8ac8f9 | 880 | || lsp->hdr.rem_lifetime == 0) |
d62a17ae | 881 | zlog_warn( |
882 | "ISIS-Spf: No LSP %s found for IS adjacency " | |
883 | "L%d on %s (ID %u)", | |
884 | rawlspid_print(lsp_id), | |
885 | spftree->level, | |
886 | circuit->interface->name, | |
887 | circuit->circuit_id); | |
888 | break; | |
889 | case ISIS_SYSTYPE_UNKNOWN: | |
890 | default: | |
891 | zlog_warn( | |
892 | "isis_spf_preload_tent unknow adj type"); | |
893 | } | |
894 | } | |
affe9e99 | 895 | list_delete_and_null(&adj_list); |
d62a17ae | 896 | /* |
897 | * Add the pseudonode | |
898 | */ | |
899 | if (spftree->level == 1) | |
900 | memcpy(lsp_id, circuit->u.bc.l1_desig_is, | |
901 | ISIS_SYS_ID_LEN + 1); | |
902 | else | |
903 | memcpy(lsp_id, circuit->u.bc.l2_desig_is, | |
904 | ISIS_SYS_ID_LEN + 1); | |
905 | /* can happen during DR reboot */ | |
906 | if (memcmp(lsp_id, null_lsp_id, ISIS_SYS_ID_LEN + 1) | |
907 | == 0) { | |
908 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
909 | zlog_debug( | |
910 | "ISIS-Spf: No L%d DR on %s (ID %d)", | |
911 | spftree->level, | |
912 | circuit->interface->name, | |
913 | circuit->circuit_id); | |
914 | continue; | |
915 | } | |
916 | adj = isis_adj_lookup(lsp_id, adjdb); | |
917 | /* if no adj, we are the dis or error */ | |
918 | if (!adj && !circuit->u.bc.is_dr[spftree->level - 1]) { | |
919 | zlog_warn( | |
920 | "ISIS-Spf: No adjacency found from root " | |
921 | "to L%d DR %s on %s (ID %d)", | |
922 | spftree->level, rawlspid_print(lsp_id), | |
923 | circuit->interface->name, | |
924 | circuit->circuit_id); | |
925 | continue; | |
926 | } | |
927 | lsp = lsp_search( | |
928 | lsp_id, | |
929 | spftree->area->lspdb[spftree->level - 1]); | |
af8ac8f9 | 930 | if (lsp == NULL || lsp->hdr.rem_lifetime == 0) { |
d62a17ae | 931 | zlog_warn( |
932 | "ISIS-Spf: No lsp (%p) found from root " | |
933 | "to L%d DR %s on %s (ID %d)", | |
934 | (void *)lsp, spftree->level, | |
935 | rawlspid_print(lsp_id), | |
936 | circuit->interface->name, | |
937 | circuit->circuit_id); | |
938 | continue; | |
939 | } | |
b30e837b CF |
940 | isis_spf_process_lsp(spftree, lsp, |
941 | spftree->hopcount_metric ? | |
942 | 1 : circuit->te_metric[spftree->level - 1], | |
943 | 0, root_sysid, parent); | |
d62a17ae | 944 | } else if (circuit->circ_type == CIRCUIT_T_P2P) { |
945 | adj = circuit->u.p2p.neighbor; | |
44b89511 | 946 | if (!adj || adj->adj_state != ISIS_ADJ_UP) |
d62a17ae | 947 | continue; |
948 | if (!adj_has_mt(adj, spftree->mtid)) | |
949 | continue; | |
950 | switch (adj->sys_type) { | |
951 | case ISIS_SYSTYPE_ES: | |
952 | memcpy(lsp_id, adj->sysid, ISIS_SYS_ID_LEN); | |
953 | LSP_PSEUDO_ID(lsp_id) = 0; | |
954 | isis_spf_add_local( | |
955 | spftree, VTYPE_ES, lsp_id, adj, | |
b30e837b | 956 | spftree->hopcount_metric ? 1 : |
d62a17ae | 957 | circuit->te_metric[spftree->level - 1], |
958 | parent); | |
959 | break; | |
960 | case ISIS_SYSTYPE_IS: | |
961 | case ISIS_SYSTYPE_L1_IS: | |
962 | case ISIS_SYSTYPE_L2_IS: | |
963 | memcpy(lsp_id, adj->sysid, ISIS_SYS_ID_LEN); | |
964 | LSP_PSEUDO_ID(lsp_id) = 0; | |
965 | LSP_FRAGMENT(lsp_id) = 0; | |
966 | if (spftree->mtid != ISIS_MT_IPV4_UNICAST | |
af8ac8f9 CF |
967 | || speaks(adj->nlpids.nlpids, |
968 | adj->nlpids.count, | |
969 | spftree->family)) | |
d62a17ae | 970 | isis_spf_add_local( |
971 | spftree, | |
972 | spftree->area->oldmetric | |
973 | ? VTYPE_NONPSEUDO_IS | |
974 | : VTYPE_NONPSEUDO_TE_IS, | |
975 | lsp_id, adj, | |
b30e837b | 976 | spftree->hopcount_metric ? 1 : |
d62a17ae | 977 | circuit->te_metric |
978 | [spftree->level - 1], | |
979 | parent); | |
980 | break; | |
981 | case ISIS_SYSTYPE_UNKNOWN: | |
982 | default: | |
983 | zlog_warn( | |
984 | "isis_spf_preload_tent unknown adj type"); | |
985 | break; | |
986 | } | |
987 | } else if (circuit->circ_type == CIRCUIT_T_LOOPBACK) { | |
988 | continue; | |
989 | } else { | |
990 | zlog_warn("isis_spf_preload_tent unsupported media"); | |
991 | retval = ISIS_WARNING; | |
992 | } | |
f390d2c7 | 993 | } |
eb5d44eb | 994 | |
d62a17ae | 995 | return retval; |
eb5d44eb | 996 | } |
997 | ||
998 | /* | |
999 | * The parent(s) for vertex is set when added to TENT list | |
1000 | * now we just put the child pointer(s) in place | |
1001 | */ | |
d62a17ae | 1002 | static void add_to_paths(struct isis_spftree *spftree, |
1003 | struct isis_vertex *vertex) | |
eb5d44eb | 1004 | { |
321c1bbb | 1005 | char buff[VID2STR_BUFFER]; |
3f045a08 | 1006 | |
ae9c9aba | 1007 | if (isis_find_vertex(&spftree->paths, &vertex->N, vertex->type)) |
d62a17ae | 1008 | return; |
bded4060 | 1009 | isis_vertex_queue_append(&spftree->paths, vertex); |
eb5d44eb | 1010 | |
f390d2c7 | 1011 | #ifdef EXTREME_DEBUG |
d62a17ae | 1012 | zlog_debug("ISIS-Spf: added %s %s %s depth %d dist %d to PATHS", |
1013 | print_sys_hostname(vertex->N.id), vtype2string(vertex->type), | |
1014 | vid2string(vertex, buff, sizeof(buff)), vertex->depth, | |
1015 | vertex->d_N); | |
f390d2c7 | 1016 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 1017 | |
d62a17ae | 1018 | if (VTYPE_IP(vertex->type)) { |
1019 | if (listcount(vertex->Adj_N) > 0) | |
321c1bbb CF |
1020 | isis_route_create(&vertex->N.ip.dest, |
1021 | &vertex->N.ip.src, | |
d62a17ae | 1022 | vertex->d_N, vertex->depth, |
1023 | vertex->Adj_N, spftree->area, | |
3dace42d | 1024 | spftree->route_table); |
d62a17ae | 1025 | else if (isis->debugs & DEBUG_SPF_EVENTS) |
1026 | zlog_debug( | |
1027 | "ISIS-Spf: no adjacencies do not install route for " | |
1028 | "%s depth %d dist %d", | |
1029 | vid2string(vertex, buff, sizeof(buff)), | |
1030 | vertex->depth, vertex->d_N); | |
1031 | } | |
1032 | ||
1033 | return; | |
eb5d44eb | 1034 | } |
1035 | ||
d62a17ae | 1036 | static void init_spt(struct isis_spftree *spftree, int mtid, int level, |
b30e837b CF |
1037 | int family, enum spf_tree_id tree_id, |
1038 | bool hopcount_metric) | |
eb5d44eb | 1039 | { |
eb919f07 CF |
1040 | isis_vertex_queue_clear(&spftree->tents); |
1041 | isis_vertex_queue_clear(&spftree->paths); | |
d62a17ae | 1042 | |
1043 | spftree->mtid = mtid; | |
1044 | spftree->level = level; | |
1045 | spftree->family = family; | |
6d38d078 | 1046 | spftree->tree_id = tree_id; |
b30e837b CF |
1047 | spftree->hopcount_metric = hopcount_metric; |
1048 | } | |
1049 | ||
1050 | static void isis_spf_loop(struct isis_spftree *spftree, | |
1051 | uint8_t *root_sysid) | |
1052 | { | |
1053 | struct isis_vertex *vertex; | |
b30e837b CF |
1054 | struct isis_lsp *lsp; |
1055 | ||
1056 | while (isis_vertex_queue_count(&spftree->tents)) { | |
1057 | vertex = isis_vertex_queue_pop(&spftree->tents); | |
1058 | ||
1059 | #ifdef EXTREME_DEBUG | |
1060 | zlog_debug( | |
1061 | "ISIS-Spf: get TENT node %s %s depth %d dist %d to PATHS", | |
1062 | print_sys_hostname(vertex->N.id), | |
1063 | vtype2string(vertex->type), vertex->depth, vertex->d_N); | |
1064 | #endif /* EXTREME_DEBUG */ | |
1065 | ||
1066 | add_to_paths(spftree, vertex); | |
cbd8e49e CF |
1067 | if (!VTYPE_IS(vertex->type)) |
1068 | continue; | |
1069 | ||
1070 | lsp = lsp_for_vertex(spftree, vertex); | |
1071 | if (!lsp) { | |
1072 | zlog_warn("ISIS-Spf: No LSP found for %s", | |
1073 | rawlspid_print(vertex->N.id)); /* FIXME */ | |
1074 | continue; | |
b30e837b | 1075 | } |
cbd8e49e CF |
1076 | |
1077 | isis_spf_process_lsp(spftree, lsp, vertex->d_N, vertex->depth, | |
1078 | root_sysid, vertex); | |
b30e837b CF |
1079 | } |
1080 | } | |
1081 | ||
1082 | struct isis_spftree *isis_run_hopcount_spf(struct isis_area *area, | |
1083 | uint8_t *sysid, | |
1084 | struct isis_spftree *spftree) | |
1085 | { | |
1086 | if (!spftree) | |
1087 | spftree = isis_spftree_new(area); | |
1088 | ||
1089 | init_spt(spftree, ISIS_MT_IPV4_UNICAST, ISIS_LEVEL2, | |
1090 | AF_INET, SPFTREE_IPV4, true); | |
1091 | if (!memcmp(sysid, isis->sysid, ISIS_SYS_ID_LEN)) { | |
1092 | /* If we are running locally, initialize with information from adjacencies */ | |
1093 | struct isis_vertex *root = isis_spf_add_root(spftree, sysid); | |
1094 | isis_spf_preload_tent(spftree, sysid, root); | |
1095 | } else { | |
1096 | isis_vertex_queue_insert(&spftree->tents, isis_vertex_new( | |
686afe9f CF |
1097 | spftree, sysid, |
1098 | VTYPE_NONPSEUDO_TE_IS)); | |
b30e837b CF |
1099 | } |
1100 | ||
1101 | isis_spf_loop(spftree, sysid); | |
1102 | ||
1103 | return spftree; | |
eb5d44eb | 1104 | } |
1105 | ||
6d38d078 CF |
1106 | static int isis_run_spf(struct isis_area *area, int level, |
1107 | enum spf_tree_id tree_id, | |
d7c0a89a | 1108 | uint8_t *sysid, struct timeval *nowtv) |
eb5d44eb | 1109 | { |
d62a17ae | 1110 | int retval = ISIS_OK; |
d62a17ae | 1111 | struct isis_vertex *root_vertex; |
6d38d078 | 1112 | struct isis_spftree *spftree = area->spftree[tree_id][level - 1]; |
d62a17ae | 1113 | struct timeval time_now; |
1114 | unsigned long long start_time, end_time; | |
6d38d078 | 1115 | uint16_t mtid = 0; |
d62a17ae | 1116 | |
1117 | /* Get time that can't roll backwards. */ | |
a699dd69 RZ |
1118 | start_time = nowtv->tv_sec; |
1119 | start_time = (start_time * 1000000) + nowtv->tv_usec; | |
d62a17ae | 1120 | |
6d38d078 CF |
1121 | int family = -1; |
1122 | switch (tree_id) { | |
1123 | case SPFTREE_IPV4: | |
1124 | family = AF_INET; | |
1125 | mtid = ISIS_MT_IPV4_UNICAST; | |
1126 | break; | |
1127 | case SPFTREE_IPV6: | |
1128 | family = AF_INET6; | |
1129 | mtid = isis_area_ipv6_topology(area); | |
1130 | break; | |
321c1bbb CF |
1131 | case SPFTREE_DSTSRC: |
1132 | family = AF_INET6; | |
1133 | mtid = ISIS_MT_IPV6_DSTSRC; | |
1134 | break; | |
6d38d078 CF |
1135 | case SPFTREE_COUNT: |
1136 | assert(!"isis_run_spf should never be called with SPFTREE_COUNT as argument!"); | |
1137 | return ISIS_WARNING; | |
1138 | } | |
1139 | ||
d62a17ae | 1140 | assert(spftree); |
1141 | assert(sysid); | |
1142 | ||
d62a17ae | 1143 | /* |
1144 | * C.2.5 Step 0 | |
1145 | */ | |
b30e837b | 1146 | init_spt(spftree, mtid, level, family, tree_id, false); |
d62a17ae | 1147 | /* a) */ |
1148 | root_vertex = isis_spf_add_root(spftree, sysid); | |
1149 | /* b) */ | |
1150 | retval = isis_spf_preload_tent(spftree, sysid, root_vertex); | |
1151 | if (retval != ISIS_OK) { | |
1152 | zlog_warn("ISIS-Spf: failed to load TENT SPF-root:%s", | |
1153 | print_sys_hostname(sysid)); | |
1154 | goto out; | |
1155 | } | |
1156 | ||
1157 | /* | |
1158 | * C.2.7 Step 2 | |
1159 | */ | |
ce837d81 CF |
1160 | if (!isis_vertex_queue_count(&spftree->tents) |
1161 | && (isis->debugs & DEBUG_SPF_EVENTS)) { | |
d62a17ae | 1162 | zlog_warn("ISIS-Spf: TENT is empty SPF-root:%s", |
1163 | print_sys_hostname(sysid)); | |
d62a17ae | 1164 | } |
1165 | ||
b30e837b | 1166 | isis_spf_loop(spftree, sysid); |
13fb40ac | 1167 | out: |
d62a17ae | 1168 | spftree->runcount++; |
1169 | spftree->last_run_timestamp = time(NULL); | |
3dca3c8c | 1170 | spftree->last_run_monotime = monotime(&time_now); |
d62a17ae | 1171 | end_time = time_now.tv_sec; |
1172 | end_time = (end_time * 1000000) + time_now.tv_usec; | |
1173 | spftree->last_run_duration = end_time - start_time; | |
1174 | ||
1175 | return retval; | |
eb5d44eb | 1176 | } |
1177 | ||
3dace42d CF |
1178 | void isis_spf_verify_routes(struct isis_area *area, struct isis_spftree **trees) |
1179 | { | |
1180 | if (area->is_type == IS_LEVEL_1) { | |
1181 | isis_route_verify_table(area, trees[0]->route_table); | |
1182 | } else if (area->is_type == IS_LEVEL_2) { | |
1183 | isis_route_verify_table(area, trees[1]->route_table); | |
1184 | } else { | |
1185 | isis_route_verify_merge(area, trees[0]->route_table, | |
1186 | trees[1]->route_table); | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | void isis_spf_invalidate_routes(struct isis_spftree *tree) | |
1191 | { | |
1192 | isis_route_invalidate_table(tree->area, tree->route_table); | |
1193 | } | |
1194 | ||
d62a17ae | 1195 | static int isis_run_spf_cb(struct thread *thread) |
eb5d44eb | 1196 | { |
d62a17ae | 1197 | struct isis_spf_run *run = THREAD_ARG(thread); |
1198 | struct isis_area *area = run->area; | |
1199 | int level = run->level; | |
1200 | int retval = ISIS_OK; | |
1201 | ||
1202 | XFREE(MTYPE_ISIS_SPF_RUN, run); | |
1203 | area->spf_timer[level - 1] = NULL; | |
1204 | ||
1205 | if (!(area->is_type & level)) { | |
1206 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1207 | zlog_warn("ISIS-SPF (%s) area does not share level", | |
1208 | area->area_tag); | |
1209 | return ISIS_WARNING; | |
1210 | } | |
eb5d44eb | 1211 | |
3dace42d CF |
1212 | isis_area_invalidate_routes(area, level); |
1213 | ||
d62a17ae | 1214 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1215 | zlog_debug("ISIS-Spf (%s) L%d SPF needed, periodic SPF", | |
1216 | area->area_tag, level); | |
f390d2c7 | 1217 | |
d62a17ae | 1218 | if (area->ip_circuits) |
6d38d078 | 1219 | retval = isis_run_spf(area, level, SPFTREE_IPV4, isis->sysid, |
996c9314 | 1220 | &thread->real); |
d62a17ae | 1221 | if (area->ipv6_circuits) |
6d38d078 | 1222 | retval = isis_run_spf(area, level, SPFTREE_IPV6, isis->sysid, |
996c9314 | 1223 | &thread->real); |
321c1bbb CF |
1224 | if (area->ipv6_circuits |
1225 | && isis_area_ipv6_dstsrc_enabled(area)) | |
1226 | retval = isis_run_spf(area, level, SPFTREE_DSTSRC, isis->sysid, | |
1227 | &thread->real); | |
eb5d44eb | 1228 | |
3dace42d CF |
1229 | isis_area_verify_routes(area); |
1230 | ||
1231 | /* walk all circuits and reset any spf specific flags */ | |
1232 | struct listnode *node; | |
1233 | struct isis_circuit *circuit; | |
1234 | for (ALL_LIST_ELEMENTS_RO(area->circuit_list, node, circuit)) | |
1235 | UNSET_FLAG(circuit->flags, ISIS_CIRCUIT_FLAPPED_AFTER_SPF); | |
1236 | ||
b30e837b CF |
1237 | fabricd_run_spf(area); |
1238 | ||
d62a17ae | 1239 | return retval; |
eb5d44eb | 1240 | } |
1241 | ||
d62a17ae | 1242 | static struct isis_spf_run *isis_run_spf_arg(struct isis_area *area, int level) |
eb5d44eb | 1243 | { |
d62a17ae | 1244 | struct isis_spf_run *run = XMALLOC(MTYPE_ISIS_SPF_RUN, sizeof(*run)); |
1245 | ||
1246 | run->area = area; | |
1247 | run->level = level; | |
1248 | ||
1249 | return run; | |
eb5d44eb | 1250 | } |
eb5d44eb | 1251 | |
d62a17ae | 1252 | int isis_spf_schedule(struct isis_area *area, int level) |
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 | ||
1261 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1262 | zlog_debug( | |
1263 | "ISIS-Spf (%s) L%d SPF schedule called, lastrun %d sec ago", | |
1264 | area->area_tag, level, diff); | |
1265 | ||
1266 | if (area->spf_delay_ietf[level - 1]) { | |
1267 | /* Need to call schedule function also if spf delay is running | |
1268 | * to | |
1269 | * restart holdoff timer - compare | |
1270 | * draft-ietf-rtgwg-backoff-algo-04 */ | |
1271 | long delay = | |
1272 | spf_backoff_schedule(area->spf_delay_ietf[level - 1]); | |
1273 | if (area->spf_timer[level - 1]) | |
1274 | return ISIS_OK; | |
1275 | ||
1276 | thread_add_timer_msec(master, isis_run_spf_cb, | |
1277 | isis_run_spf_arg(area, level), delay, | |
1278 | &area->spf_timer[level - 1]); | |
1279 | return ISIS_OK; | |
3f045a08 | 1280 | } |
d62a17ae | 1281 | |
1282 | if (area->spf_timer[level - 1]) | |
1283 | return ISIS_OK; | |
1284 | ||
1285 | /* wait configured min_spf_interval before doing the SPF */ | |
3dca3c8c | 1286 | long timer; |
d62a17ae | 1287 | if (diff >= area->min_spf_interval[level - 1]) { |
98c5bc15 | 1288 | /* Last run is more than min interval ago, schedule immediate run */ |
3dca3c8c CF |
1289 | timer = 0; |
1290 | } else { | |
1291 | timer = area->min_spf_interval[level - 1] - diff; | |
f390d2c7 | 1292 | } |
3f045a08 | 1293 | |
d62a17ae | 1294 | thread_add_timer(master, isis_run_spf_cb, isis_run_spf_arg(area, level), |
3dca3c8c | 1295 | timer, &area->spf_timer[level - 1]); |
d62a17ae | 1296 | |
1297 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
013b29d7 RZ |
1298 | zlog_debug("ISIS-Spf (%s) L%d SPF scheduled %ld sec from now", |
1299 | area->area_tag, level, timer); | |
d62a17ae | 1300 | |
1301 | return ISIS_OK; | |
1302 | } | |
1303 | ||
eb919f07 | 1304 | static void isis_print_paths(struct vty *vty, struct isis_vertex_queue *queue, |
d7c0a89a | 1305 | uint8_t *root_sysid) |
d62a17ae | 1306 | { |
1307 | struct listnode *node; | |
d62a17ae | 1308 | struct isis_vertex *vertex; |
321c1bbb | 1309 | char buff[VID2STR_BUFFER]; |
d62a17ae | 1310 | |
1311 | vty_out(vty, | |
1312 | "Vertex Type Metric Next-Hop Interface Parent\n"); | |
1313 | ||
eb919f07 | 1314 | for (ALL_QUEUE_ELEMENTS_RO(queue, node, vertex)) { |
d62a17ae | 1315 | if (memcmp(vertex->N.id, root_sysid, ISIS_SYS_ID_LEN) == 0) { |
1316 | vty_out(vty, "%-20s %-12s %-6s", | |
1317 | print_sys_hostname(root_sysid), "", ""); | |
af88c591 CF |
1318 | vty_out(vty, "%-30s\n", ""); |
1319 | continue; | |
d62a17ae | 1320 | } |
1321 | ||
af88c591 CF |
1322 | int rows = 0; |
1323 | struct listnode *anode = listhead(vertex->Adj_N); | |
1324 | struct listnode *pnode = listhead(vertex->parents); | |
1325 | struct isis_adjacency *adj; | |
1326 | struct isis_vertex *pvertex; | |
1327 | ||
1328 | vty_out(vty, "%-20s %-12s %-6u ", | |
1329 | vid2string(vertex, buff, sizeof(buff)), | |
1330 | vtype2string(vertex->type), vertex->d_N); | |
1230a82d A |
1331 | for (unsigned int i = 0; |
1332 | i < MAX(vertex->Adj_N ? listcount(vertex->Adj_N) : 0, | |
1333 | vertex->parents ? listcount(vertex->parents) : 0); | |
996c9314 | 1334 | i++) { |
af88c591 CF |
1335 | if (anode) { |
1336 | adj = listgetdata(anode); | |
1337 | anode = anode->next; | |
1338 | } else { | |
1339 | adj = NULL; | |
1340 | } | |
1341 | ||
1342 | if (pnode) { | |
1343 | pvertex = listgetdata(pnode); | |
1344 | pnode = pnode->next; | |
1345 | } else { | |
1346 | pvertex = NULL; | |
1347 | } | |
1348 | ||
1349 | if (rows) { | |
1350 | vty_out(vty, "\n"); | |
1351 | vty_out(vty, "%-20s %-12s %-6s ", "", "", ""); | |
1352 | } | |
1353 | ||
1354 | if (adj) { | |
1355 | vty_out(vty, "%-20s %-9s ", | |
1356 | print_sys_hostname(adj->sysid), | |
1357 | adj->circuit->interface->name); | |
1358 | } | |
1359 | ||
1360 | if (pvertex) { | |
1361 | if (!adj) | |
1362 | vty_out(vty, "%-20s %-9s ", "", ""); | |
1363 | ||
d62a17ae | 1364 | vty_out(vty, "%s(%d)", |
996c9314 | 1365 | vid2string(pvertex, buff, sizeof(buff)), |
d62a17ae | 1366 | pvertex->type); |
d62a17ae | 1367 | } |
d62a17ae | 1368 | |
af88c591 CF |
1369 | ++rows; |
1370 | } | |
d62a17ae | 1371 | vty_out(vty, "\n"); |
1372 | } | |
eb5d44eb | 1373 | } |
1374 | ||
321c1bbb CF |
1375 | static void isis_print_spftree(struct vty *vty, int level, |
1376 | struct isis_area *area, | |
1377 | enum spf_tree_id tree_id) | |
1378 | { | |
1379 | const char *tree_id_text = NULL; | |
1380 | ||
1381 | switch (tree_id) { | |
1382 | case SPFTREE_IPV4: | |
1383 | tree_id_text = "that speak IP"; | |
1384 | break; | |
1385 | case SPFTREE_IPV6: | |
1386 | tree_id_text = "that speak IPv6"; | |
1387 | break; | |
1388 | case SPFTREE_DSTSRC: | |
1389 | tree_id_text = "that support IPv6 dst-src routing"; | |
1390 | break; | |
1391 | case SPFTREE_COUNT: | |
1392 | assert(!"isis_print_spftree shouldn't be called with SPFTREE_COUNT as type"); | |
1393 | return; | |
1394 | } | |
1395 | ||
1396 | if (!area->spftree[tree_id][level - 1] | |
1397 | || !isis_vertex_queue_count( | |
1398 | &area->spftree[tree_id][level - 1]->paths)) | |
1399 | return; | |
1400 | ||
1401 | vty_out(vty, "IS-IS paths to level-%d routers %s\n", | |
1402 | level, tree_id_text); | |
1403 | isis_print_paths(vty, &area->spftree[tree_id][level - 1]->paths, | |
1404 | isis->sysid); | |
1405 | vty_out(vty, "\n"); | |
1406 | } | |
1407 | ||
eb5d44eb | 1408 | DEFUN (show_isis_topology, |
1409 | show_isis_topology_cmd, | |
ef020087 CF |
1410 | "show " PROTO_NAME " topology" |
1411 | #ifndef FABRICD | |
1412 | " [<level-1|level-2>]" | |
1413 | #endif | |
1414 | , SHOW_STR | |
7c0cbd0e | 1415 | PROTO_HELP |
1b49e4f0 | 1416 | "IS-IS paths to Intermediate Systems\n" |
ef020087 | 1417 | #ifndef FABRICD |
1b49e4f0 | 1418 | "Paths to all level-1 routers in the area\n" |
ef020087 CF |
1419 | "Paths to all level-2 routers in the domain\n" |
1420 | #endif | |
1421 | ) | |
eb5d44eb | 1422 | { |
d62a17ae | 1423 | int levels; |
1424 | struct listnode *node; | |
1425 | struct isis_area *area; | |
1426 | ||
1427 | if (argc < 4) | |
1428 | levels = ISIS_LEVEL1 | ISIS_LEVEL2; | |
1429 | else if (strmatch(argv[3]->text, "level-1")) | |
1430 | levels = ISIS_LEVEL1; | |
1431 | else | |
1432 | levels = ISIS_LEVEL2; | |
1433 | ||
1434 | if (!isis->area_list || isis->area_list->count == 0) | |
1435 | return CMD_SUCCESS; | |
1436 | ||
1437 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) { | |
1438 | vty_out(vty, "Area %s:\n", | |
1439 | area->area_tag ? area->area_tag : "null"); | |
1440 | ||
1441 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVELS; level++) { | |
1442 | if ((level & levels) == 0) | |
1443 | continue; | |
1444 | ||
321c1bbb CF |
1445 | if (area->ip_circuits > 0) { |
1446 | isis_print_spftree(vty, level, area, | |
1447 | SPFTREE_IPV4); | |
d62a17ae | 1448 | } |
321c1bbb CF |
1449 | if (area->ipv6_circuits > 0) { |
1450 | isis_print_spftree(vty, level, area, | |
1451 | SPFTREE_IPV6); | |
1452 | } | |
1453 | if (isis_area_ipv6_dstsrc_enabled(area)) { | |
1454 | isis_print_spftree(vty, level, area, | |
1455 | SPFTREE_DSTSRC); | |
d62a17ae | 1456 | } |
1457 | } | |
f390d2c7 | 1458 | |
b30e837b CF |
1459 | if (fabricd_spftree(area)) { |
1460 | vty_out(vty, | |
1461 | "IS-IS paths to level-2 routers with hop-by-hop metric\n"); | |
1462 | isis_print_paths(vty, &fabricd_spftree(area)->paths, isis->sysid); | |
1463 | vty_out(vty, "\n"); | |
1464 | } | |
1465 | ||
d62a17ae | 1466 | vty_out(vty, "\n"); |
f390d2c7 | 1467 | } |
3f045a08 | 1468 | |
d62a17ae | 1469 | return CMD_SUCCESS; |
f390d2c7 | 1470 | } |
eb5d44eb | 1471 | |
d62a17ae | 1472 | void isis_spf_cmds_init() |
eb5d44eb | 1473 | { |
d62a17ae | 1474 | install_element(VIEW_NODE, &show_isis_topology_cmd); |
eb5d44eb | 1475 | } |
02cd317e CF |
1476 | |
1477 | void isis_spf_print(struct isis_spftree *spftree, struct vty *vty) | |
1478 | { | |
1479 | vty_out(vty, " last run elapsed : "); | |
1480 | vty_out_timestr(vty, spftree->last_run_timestamp); | |
1481 | vty_out(vty, "\n"); | |
1482 | ||
1483 | vty_out(vty, " last run duration : %u usec\n", | |
d7c0a89a | 1484 | (uint32_t)spftree->last_run_duration); |
02cd317e | 1485 | |
996c9314 | 1486 | vty_out(vty, " run count : %u\n", spftree->runcount); |
02cd317e | 1487 | } |