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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 | |
6 | * Tampere University of Technology | |
7 | * Institute of Communications Engineering | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public Licenseas published by the Free | |
11 | * Software Foundation; either version 2 of the License, or (at your option) | |
12 | * any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful,but WITHOUT | |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
17 | * more details. | |
18 | ||
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write to the Free Software Foundation, Inc., | |
21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | ||
eb5d44eb | 24 | #include <zebra.h> |
eb5d44eb | 25 | |
26 | #include "thread.h" | |
27 | #include "linklist.h" | |
28 | #include "vty.h" | |
29 | #include "log.h" | |
30 | #include "command.h" | |
31 | #include "memory.h" | |
32 | #include "prefix.h" | |
33 | #include "hash.h" | |
34 | #include "if.h" | |
35 | #include "table.h" | |
36 | ||
37 | #include "isis_constants.h" | |
38 | #include "isis_common.h" | |
3f045a08 | 39 | #include "isis_flags.h" |
eb5d44eb | 40 | #include "dict.h" |
41 | #include "isisd.h" | |
42 | #include "isis_misc.h" | |
43 | #include "isis_adjacency.h" | |
44 | #include "isis_circuit.h" | |
45 | #include "isis_tlv.h" | |
46 | #include "isis_pdu.h" | |
47 | #include "isis_lsp.h" | |
48 | #include "isis_dynhn.h" | |
49 | #include "isis_spf.h" | |
50 | #include "isis_route.h" | |
51 | #include "isis_csm.h" | |
52 | ||
eb5d44eb | 53 | int isis_run_spf_l1 (struct thread *thread); |
54 | int isis_run_spf_l2 (struct thread *thread); | |
55 | ||
eb5d44eb | 56 | /* 7.2.7 */ |
92365889 | 57 | static void |
eb5d44eb | 58 | remove_excess_adjs (struct list *adjs) |
59 | { | |
3fdb2dd9 | 60 | struct listnode *node, *excess = NULL; |
eb5d44eb | 61 | struct isis_adjacency *adj, *candidate = NULL; |
62 | int comp; | |
63 | ||
3fdb2dd9 | 64 | for (ALL_LIST_ELEMENTS_RO (adjs, node, adj)) |
f390d2c7 | 65 | { |
66 | if (excess == NULL) | |
67 | excess = node; | |
1eb8ef25 | 68 | candidate = listgetdata (excess); |
69 | ||
f390d2c7 | 70 | if (candidate->sys_type < adj->sys_type) |
71 | { | |
72 | excess = node; | |
73 | candidate = adj; | |
74 | continue; | |
75 | } | |
76 | if (candidate->sys_type > adj->sys_type) | |
77 | continue; | |
78 | ||
79 | comp = memcmp (candidate->sysid, adj->sysid, ISIS_SYS_ID_LEN); | |
80 | if (comp > 0) | |
81 | { | |
82 | excess = node; | |
83 | candidate = adj; | |
84 | continue; | |
85 | } | |
86 | if (comp < 0) | |
87 | continue; | |
eb5d44eb | 88 | |
f390d2c7 | 89 | if (candidate->circuit->circuit_id > adj->circuit->circuit_id) |
90 | { | |
91 | excess = node; | |
92 | candidate = adj; | |
93 | continue; | |
94 | } | |
95 | ||
96 | if (candidate->circuit->circuit_id < adj->circuit->circuit_id) | |
97 | continue; | |
98 | ||
99 | comp = memcmp (candidate->snpa, adj->snpa, ETH_ALEN); | |
100 | if (comp > 0) | |
101 | { | |
102 | excess = node; | |
103 | candidate = adj; | |
104 | continue; | |
105 | } | |
eb5d44eb | 106 | } |
f390d2c7 | 107 | |
eb5d44eb | 108 | list_delete_node (adjs, excess); |
109 | ||
110 | return; | |
111 | } | |
112 | ||
92365889 | 113 | static const char * |
eb5d44eb | 114 | vtype2string (enum vertextype vtype) |
115 | { | |
f390d2c7 | 116 | switch (vtype) |
117 | { | |
118 | case VTYPE_PSEUDO_IS: | |
119 | return "pseudo_IS"; | |
120 | break; | |
82a8428c | 121 | case VTYPE_PSEUDO_TE_IS: |
122 | return "pseudo_TE-IS"; | |
123 | break; | |
f390d2c7 | 124 | case VTYPE_NONPSEUDO_IS: |
125 | return "IS"; | |
126 | break; | |
82a8428c | 127 | case VTYPE_NONPSEUDO_TE_IS: |
128 | return "TE-IS"; | |
129 | break; | |
f390d2c7 | 130 | case VTYPE_ES: |
131 | return "ES"; | |
132 | break; | |
133 | case VTYPE_IPREACH_INTERNAL: | |
134 | return "IP internal"; | |
135 | break; | |
136 | case VTYPE_IPREACH_EXTERNAL: | |
137 | return "IP external"; | |
138 | break; | |
82a8428c | 139 | case VTYPE_IPREACH_TE: |
140 | return "IP TE"; | |
141 | break; | |
eb5d44eb | 142 | #ifdef HAVE_IPV6 |
f390d2c7 | 143 | case VTYPE_IP6REACH_INTERNAL: |
144 | return "IP6 internal"; | |
145 | break; | |
146 | case VTYPE_IP6REACH_EXTERNAL: | |
147 | return "IP6 external"; | |
148 | break; | |
149 | #endif /* HAVE_IPV6 */ | |
150 | default: | |
151 | return "UNKNOWN"; | |
152 | } | |
153 | return NULL; /* Not reached */ | |
eb5d44eb | 154 | } |
155 | ||
92365889 | 156 | static const char * |
f390d2c7 | 157 | vid2string (struct isis_vertex *vertex, u_char * buff) |
eb5d44eb | 158 | { |
f390d2c7 | 159 | switch (vertex->type) |
160 | { | |
161 | case VTYPE_PSEUDO_IS: | |
82a8428c | 162 | case VTYPE_PSEUDO_TE_IS: |
3f045a08 | 163 | return print_sys_hostname (vertex->N.id); |
f390d2c7 | 164 | break; |
165 | case VTYPE_NONPSEUDO_IS: | |
82a8428c | 166 | case VTYPE_NONPSEUDO_TE_IS: |
f390d2c7 | 167 | case VTYPE_ES: |
3f045a08 | 168 | return print_sys_hostname (vertex->N.id); |
f390d2c7 | 169 | break; |
170 | case VTYPE_IPREACH_INTERNAL: | |
171 | case VTYPE_IPREACH_EXTERNAL: | |
82a8428c | 172 | case VTYPE_IPREACH_TE: |
eb5d44eb | 173 | #ifdef HAVE_IPV6 |
f390d2c7 | 174 | case VTYPE_IP6REACH_INTERNAL: |
175 | case VTYPE_IP6REACH_EXTERNAL: | |
176 | #endif /* HAVE_IPV6 */ | |
f7c43dcb | 177 | prefix2str ((struct prefix *) &vertex->N.prefix, (char *) buff, BUFSIZ); |
f390d2c7 | 178 | break; |
179 | default: | |
180 | return "UNKNOWN"; | |
181 | } | |
182 | ||
f7c43dcb | 183 | return (char *) buff; |
eb5d44eb | 184 | } |
185 | ||
3f045a08 JB |
186 | static struct isis_vertex * |
187 | isis_vertex_new (void *id, enum vertextype vtype) | |
eb5d44eb | 188 | { |
3f045a08 | 189 | struct isis_vertex *vertex; |
eb5d44eb | 190 | |
3f045a08 JB |
191 | vertex = XCALLOC (MTYPE_ISIS_VERTEX, sizeof (struct isis_vertex)); |
192 | if (vertex == NULL) | |
f390d2c7 | 193 | { |
3f045a08 | 194 | zlog_err ("isis_vertex_new Out of memory!"); |
f390d2c7 | 195 | return NULL; |
196 | } | |
eb5d44eb | 197 | |
3f045a08 JB |
198 | vertex->type = vtype; |
199 | switch (vtype) | |
200 | { | |
201 | case VTYPE_ES: | |
202 | case VTYPE_NONPSEUDO_IS: | |
203 | case VTYPE_NONPSEUDO_TE_IS: | |
204 | memcpy (vertex->N.id, (u_char *) id, ISIS_SYS_ID_LEN); | |
205 | break; | |
206 | case VTYPE_PSEUDO_IS: | |
207 | case VTYPE_PSEUDO_TE_IS: | |
208 | memcpy (vertex->N.id, (u_char *) id, ISIS_SYS_ID_LEN + 1); | |
209 | break; | |
210 | case VTYPE_IPREACH_INTERNAL: | |
211 | case VTYPE_IPREACH_EXTERNAL: | |
212 | case VTYPE_IPREACH_TE: | |
213 | #ifdef HAVE_IPV6 | |
214 | case VTYPE_IP6REACH_INTERNAL: | |
215 | case VTYPE_IP6REACH_EXTERNAL: | |
216 | #endif /* HAVE_IPV6 */ | |
217 | memcpy (&vertex->N.prefix, (struct prefix *) id, | |
218 | sizeof (struct prefix)); | |
219 | break; | |
220 | default: | |
221 | zlog_err ("WTF!"); | |
222 | } | |
223 | ||
224 | vertex->Adj_N = list_new (); | |
225 | vertex->parents = list_new (); | |
226 | vertex->children = list_new (); | |
227 | ||
228 | return vertex; | |
eb5d44eb | 229 | } |
230 | ||
92365889 | 231 | static void |
eb5d44eb | 232 | isis_vertex_del (struct isis_vertex *vertex) |
233 | { | |
eb5d44eb | 234 | list_delete (vertex->Adj_N); |
3f045a08 JB |
235 | vertex->Adj_N = NULL; |
236 | list_delete (vertex->parents); | |
237 | vertex->parents = NULL; | |
238 | list_delete (vertex->children); | |
239 | vertex->children = NULL; | |
eb5d44eb | 240 | |
3f045a08 | 241 | memset(vertex, 0, sizeof(struct isis_vertex)); |
eb5d44eb | 242 | XFREE (MTYPE_ISIS_VERTEX, vertex); |
f390d2c7 | 243 | |
eb5d44eb | 244 | return; |
245 | } | |
246 | ||
92365889 | 247 | static void |
3f045a08 JB |
248 | isis_vertex_adj_del (struct isis_vertex *vertex, struct isis_adjacency *adj) |
249 | { | |
250 | struct listnode *node, *nextnode; | |
251 | if (!vertex) | |
252 | return; | |
253 | for (node = listhead (vertex->Adj_N); node; node = nextnode) | |
254 | { | |
255 | nextnode = listnextnode(node); | |
256 | if (listgetdata(node) == adj) | |
257 | list_delete_node(vertex->Adj_N, node); | |
258 | } | |
259 | return; | |
260 | } | |
261 | ||
262 | struct isis_spftree * | |
263 | isis_spftree_new (struct isis_area *area) | |
264 | { | |
265 | struct isis_spftree *tree; | |
266 | ||
267 | tree = XCALLOC (MTYPE_ISIS_SPFTREE, sizeof (struct isis_spftree)); | |
268 | if (tree == NULL) | |
269 | { | |
270 | zlog_err ("ISIS-Spf: isis_spftree_new Out of memory!"); | |
271 | return NULL; | |
272 | } | |
273 | ||
274 | tree->tents = list_new (); | |
275 | tree->paths = list_new (); | |
276 | tree->area = area; | |
e38e0df0 SV |
277 | tree->last_run_timestamp = 0; |
278 | tree->last_run_duration = 0; | |
3f045a08 JB |
279 | tree->runcount = 0; |
280 | tree->pending = 0; | |
281 | return tree; | |
282 | } | |
283 | ||
284 | void | |
eb5d44eb | 285 | isis_spftree_del (struct isis_spftree *spftree) |
286 | { | |
3f045a08 JB |
287 | THREAD_TIMER_OFF (spftree->t_spf); |
288 | ||
f7c43dcb | 289 | spftree->tents->del = (void (*)(void *)) isis_vertex_del; |
eb5d44eb | 290 | list_delete (spftree->tents); |
3f045a08 | 291 | spftree->tents = NULL; |
f390d2c7 | 292 | |
f7c43dcb | 293 | spftree->paths->del = (void (*)(void *)) isis_vertex_del; |
eb5d44eb | 294 | list_delete (spftree->paths); |
3f045a08 | 295 | spftree->paths = NULL; |
eb5d44eb | 296 | |
297 | XFREE (MTYPE_ISIS_SPFTREE, spftree); | |
298 | ||
299 | return; | |
300 | } | |
3f045a08 JB |
301 | |
302 | void | |
303 | isis_spftree_adj_del (struct isis_spftree *spftree, struct isis_adjacency *adj) | |
304 | { | |
305 | struct listnode *node; | |
306 | if (!adj) | |
307 | return; | |
308 | for (node = listhead (spftree->tents); node; node = listnextnode (node)) | |
309 | isis_vertex_adj_del (listgetdata (node), adj); | |
310 | for (node = listhead (spftree->paths); node; node = listnextnode (node)) | |
311 | isis_vertex_adj_del (listgetdata (node), adj); | |
312 | return; | |
313 | } | |
eb5d44eb | 314 | |
f390d2c7 | 315 | void |
eb5d44eb | 316 | spftree_area_init (struct isis_area *area) |
317 | { | |
3f045a08 JB |
318 | if (area->is_type & IS_LEVEL_1) |
319 | { | |
320 | if (area->spftree[0] == NULL) | |
321 | area->spftree[0] = isis_spftree_new (area); | |
eb5d44eb | 322 | #ifdef HAVE_IPV6 |
3f045a08 JB |
323 | if (area->spftree6[0] == NULL) |
324 | area->spftree6[0] = isis_spftree_new (area); | |
eb5d44eb | 325 | #endif |
3f045a08 | 326 | } |
eb5d44eb | 327 | |
3f045a08 JB |
328 | if (area->is_type & IS_LEVEL_2) |
329 | { | |
330 | if (area->spftree[1] == NULL) | |
331 | area->spftree[1] = isis_spftree_new (area); | |
eb5d44eb | 332 | #ifdef HAVE_IPV6 |
3f045a08 JB |
333 | if (area->spftree6[1] == NULL) |
334 | area->spftree6[1] = isis_spftree_new (area); | |
eb5d44eb | 335 | #endif |
3f045a08 | 336 | } |
eb5d44eb | 337 | |
338 | return; | |
339 | } | |
340 | ||
3f045a08 JB |
341 | void |
342 | spftree_area_del (struct isis_area *area) | |
eb5d44eb | 343 | { |
3f045a08 JB |
344 | if (area->is_type & IS_LEVEL_1) |
345 | { | |
346 | if (area->spftree[0] != NULL) | |
f390d2c7 | 347 | { |
3f045a08 JB |
348 | isis_spftree_del (area->spftree[0]); |
349 | area->spftree[0] = NULL; | |
350 | } | |
351 | #ifdef HAVE_IPV6 | |
352 | if (area->spftree6[0]) | |
353 | { | |
354 | isis_spftree_del (area->spftree6[0]); | |
355 | area->spftree6[0] = NULL; | |
f390d2c7 | 356 | } |
3f045a08 JB |
357 | #endif |
358 | } | |
f390d2c7 | 359 | |
3f045a08 JB |
360 | if (area->is_type & IS_LEVEL_2) |
361 | { | |
362 | if (area->spftree[1] != NULL) | |
f390d2c7 | 363 | { |
3f045a08 JB |
364 | isis_spftree_del (area->spftree[1]); |
365 | area->spftree[1] = NULL; | |
366 | } | |
eb5d44eb | 367 | #ifdef HAVE_IPV6 |
de543de3 | 368 | if (area->spftree6[1] != NULL) |
3f045a08 JB |
369 | { |
370 | isis_spftree_del (area->spftree6[1]); | |
371 | area->spftree6[1] = NULL; | |
f390d2c7 | 372 | } |
3f045a08 JB |
373 | #endif |
374 | } | |
eb5d44eb | 375 | |
3f045a08 JB |
376 | return; |
377 | } | |
f390d2c7 | 378 | |
3f045a08 JB |
379 | void |
380 | spftree_area_adj_del (struct isis_area *area, struct isis_adjacency *adj) | |
381 | { | |
382 | if (area->is_type & IS_LEVEL_1) | |
383 | { | |
384 | if (area->spftree[0] != NULL) | |
385 | isis_spftree_adj_del (area->spftree[0], adj); | |
386 | #ifdef HAVE_IPV6 | |
387 | if (area->spftree6[0] != NULL) | |
388 | isis_spftree_adj_del (area->spftree6[0], adj); | |
389 | #endif | |
390 | } | |
391 | ||
392 | if (area->is_type & IS_LEVEL_2) | |
393 | { | |
394 | if (area->spftree[1] != NULL) | |
395 | isis_spftree_adj_del (area->spftree[1], adj); | |
396 | #ifdef HAVE_IPV6 | |
397 | if (area->spftree6[1] != NULL) | |
398 | isis_spftree_adj_del (area->spftree6[1], adj); | |
399 | #endif | |
400 | } | |
401 | ||
402 | return; | |
403 | } | |
404 | ||
405 | /* | |
406 | * Find the system LSP: returns the LSP in our LSP database | |
407 | * associated with the given system ID. | |
408 | */ | |
409 | static struct isis_lsp * | |
410 | isis_root_system_lsp (struct isis_area *area, int level, u_char *sysid) | |
411 | { | |
e38e0df0 | 412 | struct isis_lsp *lsp; |
3f045a08 JB |
413 | u_char lspid[ISIS_SYS_ID_LEN + 2]; |
414 | ||
415 | memcpy (lspid, sysid, ISIS_SYS_ID_LEN); | |
416 | LSP_PSEUDO_ID (lspid) = 0; | |
417 | LSP_FRAGMENT (lspid) = 0; | |
e38e0df0 SV |
418 | lsp = lsp_search (lspid, area->lspdb[level - 1]); |
419 | if (lsp && lsp->lsp_header->rem_lifetime != 0) | |
420 | return lsp; | |
421 | return NULL; | |
eb5d44eb | 422 | } |
423 | ||
424 | /* | |
425 | * Add this IS to the root of SPT | |
426 | */ | |
3f045a08 JB |
427 | static struct isis_vertex * |
428 | isis_spf_add_root (struct isis_spftree *spftree, int level, u_char *sysid) | |
eb5d44eb | 429 | { |
430 | struct isis_vertex *vertex; | |
431 | struct isis_lsp *lsp; | |
eb5d44eb | 432 | #ifdef EXTREME_DEBUG |
433 | u_char buff[BUFSIZ]; | |
434 | #endif /* EXTREME_DEBUG */ | |
f390d2c7 | 435 | |
3f045a08 | 436 | lsp = isis_root_system_lsp (spftree->area, level, sysid); |
eb5d44eb | 437 | if (lsp == NULL) |
438 | zlog_warn ("ISIS-Spf: could not find own l%d LSP!", level); | |
f390d2c7 | 439 | |
3f045a08 JB |
440 | if (!spftree->area->oldmetric) |
441 | vertex = isis_vertex_new (sysid, VTYPE_NONPSEUDO_TE_IS); | |
82a8428c | 442 | else |
3f045a08 | 443 | vertex = isis_vertex_new (sysid, VTYPE_NONPSEUDO_IS); |
eb5d44eb | 444 | |
445 | listnode_add (spftree->paths, vertex); | |
446 | ||
447 | #ifdef EXTREME_DEBUG | |
529d65b3 | 448 | zlog_debug ("ISIS-Spf: added this IS %s %s depth %d dist %d to PATHS", |
449 | vtype2string (vertex->type), vid2string (vertex, buff), | |
450 | vertex->depth, vertex->d_N); | |
eb5d44eb | 451 | #endif /* EXTREME_DEBUG */ |
452 | ||
3f045a08 | 453 | return vertex; |
eb5d44eb | 454 | } |
455 | ||
92365889 | 456 | static struct isis_vertex * |
f390d2c7 | 457 | isis_find_vertex (struct list *list, void *id, enum vertextype vtype) |
eb5d44eb | 458 | { |
459 | struct listnode *node; | |
460 | struct isis_vertex *vertex; | |
461 | struct prefix *p1, *p2; | |
462 | ||
1eb8ef25 | 463 | for (ALL_LIST_ELEMENTS_RO (list, node, vertex)) |
f390d2c7 | 464 | { |
f390d2c7 | 465 | if (vertex->type != vtype) |
466 | continue; | |
467 | switch (vtype) | |
468 | { | |
469 | case VTYPE_ES: | |
470 | case VTYPE_NONPSEUDO_IS: | |
82a8428c | 471 | case VTYPE_NONPSEUDO_TE_IS: |
f390d2c7 | 472 | if (memcmp ((u_char *) id, vertex->N.id, ISIS_SYS_ID_LEN) == 0) |
473 | return vertex; | |
474 | break; | |
475 | case VTYPE_PSEUDO_IS: | |
82a8428c | 476 | case VTYPE_PSEUDO_TE_IS: |
f390d2c7 | 477 | if (memcmp ((u_char *) id, vertex->N.id, ISIS_SYS_ID_LEN + 1) == 0) |
478 | return vertex; | |
479 | break; | |
480 | case VTYPE_IPREACH_INTERNAL: | |
481 | case VTYPE_IPREACH_EXTERNAL: | |
82a8428c | 482 | case VTYPE_IPREACH_TE: |
eb5d44eb | 483 | #ifdef HAVE_IPV6 |
f390d2c7 | 484 | case VTYPE_IP6REACH_INTERNAL: |
485 | case VTYPE_IP6REACH_EXTERNAL: | |
eb5d44eb | 486 | #endif /* HAVE_IPV6 */ |
f390d2c7 | 487 | p1 = (struct prefix *) id; |
488 | p2 = (struct prefix *) &vertex->N.id; | |
489 | if (p1->family == p2->family && p1->prefixlen == p2->prefixlen && | |
490 | memcmp (&p1->u.prefix, &p2->u.prefix, | |
491 | PSIZE (p1->prefixlen)) == 0) | |
492 | return vertex; | |
493 | break; | |
494 | } | |
eb5d44eb | 495 | } |
eb5d44eb | 496 | |
497 | return NULL; | |
498 | } | |
499 | ||
eb5d44eb | 500 | /* |
501 | * Add a vertex to TENT sorted by cost and by vertextype on tie break situation | |
502 | */ | |
92365889 | 503 | static struct isis_vertex * |
f390d2c7 | 504 | isis_spf_add2tent (struct isis_spftree *spftree, enum vertextype vtype, |
3f045a08 JB |
505 | void *id, uint32_t cost, int depth, int family, |
506 | struct isis_adjacency *adj, struct isis_vertex *parent) | |
eb5d44eb | 507 | { |
508 | struct isis_vertex *vertex, *v; | |
509 | struct listnode *node; | |
3f045a08 | 510 | struct isis_adjacency *parent_adj; |
f390d2c7 | 511 | #ifdef EXTREME_DEBUG |
eb5d44eb | 512 | u_char buff[BUFSIZ]; |
513 | #endif | |
514 | ||
3f045a08 JB |
515 | assert (isis_find_vertex (spftree->paths, id, vtype) == NULL); |
516 | assert (isis_find_vertex (spftree->tents, id, vtype) == NULL); | |
eb5d44eb | 517 | vertex = isis_vertex_new (id, vtype); |
518 | vertex->d_N = cost; | |
519 | vertex->depth = depth; | |
f390d2c7 | 520 | |
3f045a08 JB |
521 | if (parent) { |
522 | listnode_add (vertex->parents, parent); | |
523 | if (listnode_lookup (parent->children, vertex) == NULL) | |
524 | listnode_add (parent->children, vertex); | |
525 | } | |
526 | ||
527 | if (parent && parent->Adj_N && listcount(parent->Adj_N) > 0) { | |
528 | for (ALL_LIST_ELEMENTS_RO (parent->Adj_N, node, parent_adj)) | |
529 | listnode_add (vertex->Adj_N, parent_adj); | |
530 | } else if (adj) { | |
eb5d44eb | 531 | listnode_add (vertex->Adj_N, adj); |
3f045a08 JB |
532 | } |
533 | ||
f390d2c7 | 534 | #ifdef EXTREME_DEBUG |
3f045a08 JB |
535 | zlog_debug ("ISIS-Spf: add to TENT %s %s %s depth %d dist %d adjcount %d", |
536 | print_sys_hostname (vertex->N.id), | |
529d65b3 | 537 | vtype2string (vertex->type), vid2string (vertex, buff), |
3f045a08 | 538 | vertex->depth, vertex->d_N, listcount(vertex->Adj_N)); |
eb5d44eb | 539 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 540 | |
f390d2c7 | 541 | if (list_isempty (spftree->tents)) |
542 | { | |
543 | listnode_add (spftree->tents, vertex); | |
544 | return vertex; | |
545 | } | |
3f045a08 JB |
546 | |
547 | /* XXX: This cant use the standard ALL_LIST_ELEMENTS macro */ | |
1eb8ef25 | 548 | for (node = listhead (spftree->tents); node; node = listnextnode (node)) |
f390d2c7 | 549 | { |
1eb8ef25 | 550 | v = listgetdata (node); |
f390d2c7 | 551 | if (v->d_N > vertex->d_N) |
552 | { | |
553 | list_add_node_prev (spftree->tents, node, vertex); | |
554 | break; | |
555 | } | |
3f045a08 | 556 | else if (v->d_N == vertex->d_N && v->type > vertex->type) |
f390d2c7 | 557 | { |
558 | /* Tie break, add according to type */ | |
3f045a08 | 559 | list_add_node_prev (spftree->tents, node, vertex); |
f390d2c7 | 560 | break; |
561 | } | |
eb5d44eb | 562 | } |
3f045a08 JB |
563 | |
564 | if (node == NULL) | |
565 | listnode_add (spftree->tents, vertex); | |
566 | ||
eb5d44eb | 567 | return vertex; |
568 | } | |
569 | ||
3f045a08 | 570 | static void |
f390d2c7 | 571 | isis_spf_add_local (struct isis_spftree *spftree, enum vertextype vtype, |
3f045a08 JB |
572 | void *id, struct isis_adjacency *adj, uint32_t cost, |
573 | int family, struct isis_vertex *parent) | |
eb5d44eb | 574 | { |
575 | struct isis_vertex *vertex; | |
f390d2c7 | 576 | |
577 | vertex = isis_find_vertex (spftree->tents, id, vtype); | |
578 | ||
579 | if (vertex) | |
580 | { | |
581 | /* C.2.5 c) */ | |
582 | if (vertex->d_N == cost) | |
583 | { | |
584 | if (adj) | |
585 | listnode_add (vertex->Adj_N, adj); | |
586 | /* d) */ | |
587 | if (listcount (vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
588 | remove_excess_adjs (vertex->Adj_N); | |
3f045a08 JB |
589 | if (parent && (listnode_lookup (vertex->parents, parent) == NULL)) |
590 | listnode_add (vertex->parents, parent); | |
591 | if (parent && (listnode_lookup (parent->children, vertex) == NULL)) | |
592 | listnode_add (parent->children, vertex); | |
593 | return; | |
f390d2c7 | 594 | } |
3f045a08 | 595 | else if (vertex->d_N < cost) |
f390d2c7 | 596 | { |
3f045a08 JB |
597 | /* e) do nothing */ |
598 | return; | |
f390d2c7 | 599 | } |
3f045a08 JB |
600 | else { /* vertex->d_N > cost */ |
601 | /* f) */ | |
602 | struct listnode *pnode, *pnextnode; | |
603 | struct isis_vertex *pvertex; | |
604 | listnode_delete (spftree->tents, vertex); | |
605 | assert (listcount (vertex->children) == 0); | |
606 | for (ALL_LIST_ELEMENTS (vertex->parents, pnode, pnextnode, pvertex)) | |
607 | listnode_delete(pvertex->children, vertex); | |
608 | isis_vertex_del (vertex); | |
609 | } | |
eb5d44eb | 610 | } |
eb5d44eb | 611 | |
3f045a08 JB |
612 | isis_spf_add2tent (spftree, vtype, id, cost, 1, family, adj, parent); |
613 | return; | |
eb5d44eb | 614 | } |
615 | ||
92365889 | 616 | static void |
f390d2c7 | 617 | process_N (struct isis_spftree *spftree, enum vertextype vtype, void *id, |
3f045a08 JB |
618 | uint32_t dist, uint16_t depth, int family, |
619 | struct isis_vertex *parent) | |
eb5d44eb | 620 | { |
621 | struct isis_vertex *vertex; | |
622 | #ifdef EXTREME_DEBUG | |
623 | u_char buff[255]; | |
624 | #endif | |
625 | ||
3f045a08 JB |
626 | assert (spftree && parent); |
627 | ||
628 | /* RFC3787 section 5.1 */ | |
629 | if (spftree->area->newmetric == 1) | |
630 | { | |
631 | if (dist > MAX_WIDE_PATH_METRIC) | |
632 | return; | |
633 | } | |
eb5d44eb | 634 | /* C.2.6 b) */ |
3f045a08 JB |
635 | else if (spftree->area->oldmetric == 1) |
636 | { | |
637 | if (dist > MAX_NARROW_PATH_METRIC) | |
638 | return; | |
639 | } | |
640 | ||
eb5d44eb | 641 | /* c) */ |
642 | vertex = isis_find_vertex (spftree->paths, id, vtype); | |
f390d2c7 | 643 | if (vertex) |
644 | { | |
eb5d44eb | 645 | #ifdef EXTREME_DEBUG |
3f045a08 JB |
646 | zlog_debug ("ISIS-Spf: process_N %s %s %s dist %d already found from PATH", |
647 | print_sys_hostname (vertex->N.id), | |
529d65b3 | 648 | vtype2string (vtype), vid2string (vertex, buff), dist); |
eb5d44eb | 649 | #endif /* EXTREME_DEBUG */ |
f390d2c7 | 650 | assert (dist >= vertex->d_N); |
651 | return; | |
652 | } | |
eb5d44eb | 653 | |
654 | vertex = isis_find_vertex (spftree->tents, id, vtype); | |
f390d2c7 | 655 | /* d) */ |
656 | if (vertex) | |
657 | { | |
658 | /* 1) */ | |
eb5d44eb | 659 | #ifdef EXTREME_DEBUG |
3f045a08 JB |
660 | zlog_debug ("ISIS-Spf: process_N %s %s %s dist %d parent %s adjcount %d", |
661 | print_sys_hostname (vertex->N.id), | |
662 | vtype2string (vtype), vid2string (vertex, buff), dist, | |
663 | (parent ? print_sys_hostname (parent->N.id) : "null"), | |
664 | (parent ? listcount (parent->Adj_N) : 0)); | |
eb5d44eb | 665 | #endif /* EXTREME_DEBUG */ |
f390d2c7 | 666 | if (vertex->d_N == dist) |
667 | { | |
3f045a08 JB |
668 | struct listnode *node; |
669 | struct isis_adjacency *parent_adj; | |
670 | for (ALL_LIST_ELEMENTS_RO (parent->Adj_N, node, parent_adj)) | |
671 | if (listnode_lookup(vertex->Adj_N, parent_adj) == NULL) | |
672 | listnode_add (vertex->Adj_N, parent_adj); | |
f390d2c7 | 673 | /* 2) */ |
674 | if (listcount (vertex->Adj_N) > ISIS_MAX_PATH_SPLITS) | |
675 | remove_excess_adjs (vertex->Adj_N); | |
3f045a08 JB |
676 | if (listnode_lookup (vertex->parents, parent) == NULL) |
677 | listnode_add (vertex->parents, parent); | |
678 | if (listnode_lookup (parent->children, vertex) == NULL) | |
679 | listnode_add (parent->children, vertex); | |
f390d2c7 | 680 | /* 3) */ |
681 | return; | |
682 | } | |
683 | else if (vertex->d_N < dist) | |
684 | { | |
685 | return; | |
686 | /* 4) */ | |
687 | } | |
688 | else | |
689 | { | |
3f045a08 JB |
690 | struct listnode *pnode, *pnextnode; |
691 | struct isis_vertex *pvertex; | |
f390d2c7 | 692 | listnode_delete (spftree->tents, vertex); |
3f045a08 JB |
693 | assert (listcount (vertex->children) == 0); |
694 | for (ALL_LIST_ELEMENTS (vertex->parents, pnode, pnextnode, pvertex)) | |
695 | listnode_delete(pvertex->children, vertex); | |
696 | isis_vertex_del (vertex); | |
f390d2c7 | 697 | } |
eb5d44eb | 698 | } |
f390d2c7 | 699 | |
3f045a08 JB |
700 | #ifdef EXTREME_DEBUG |
701 | zlog_debug ("ISIS-Spf: process_N add2tent %s %s dist %d parent %s", | |
702 | print_sys_hostname(id), vtype2string (vtype), dist, | |
703 | (parent ? print_sys_hostname (parent->N.id) : "null")); | |
704 | #endif /* EXTREME_DEBUG */ | |
705 | ||
706 | isis_spf_add2tent (spftree, vtype, id, dist, depth, family, NULL, parent); | |
eb5d44eb | 707 | return; |
708 | } | |
709 | ||
710 | /* | |
711 | * C.2.6 Step 1 | |
712 | */ | |
92365889 | 713 | static int |
f390d2c7 | 714 | isis_spf_process_lsp (struct isis_spftree *spftree, struct isis_lsp *lsp, |
3f045a08 JB |
715 | uint32_t cost, uint16_t depth, int family, |
716 | u_char *root_sysid, struct isis_vertex *parent) | |
eb5d44eb | 717 | { |
718 | struct listnode *node, *fragnode = NULL; | |
3f045a08 | 719 | uint32_t dist; |
eb5d44eb | 720 | struct is_neigh *is_neigh; |
82a8428c | 721 | struct te_is_neigh *te_is_neigh; |
eb5d44eb | 722 | struct ipv4_reachability *ipreach; |
82a8428c | 723 | struct te_ipv4_reachability *te_ipv4_reach; |
eb5d44eb | 724 | enum vertextype vtype; |
725 | struct prefix prefix; | |
726 | #ifdef HAVE_IPV6 | |
727 | struct ipv6_reachability *ip6reach; | |
728 | #endif /* HAVE_IPV6 */ | |
3f045a08 | 729 | static const u_char null_sysid[ISIS_SYS_ID_LEN]; |
f390d2c7 | 730 | |
3f045a08 | 731 | if (!speaks (lsp->tlv_data.nlpids, family)) |
eb5d44eb | 732 | return ISIS_OK; |
733 | ||
f390d2c7 | 734 | lspfragloop: |
735 | if (lsp->lsp_header->seq_num == 0) | |
736 | { | |
3f045a08 | 737 | zlog_warn ("isis_spf_process_lsp(): lsp with 0 seq_num - ignore"); |
f390d2c7 | 738 | return ISIS_WARNING; |
eb5d44eb | 739 | } |
f390d2c7 | 740 | |
3f045a08 JB |
741 | #ifdef EXTREME_DEBUG |
742 | zlog_debug ("ISIS-Spf: process_lsp %s", print_sys_hostname(lsp->lsp_header->lsp_id)); | |
743 | #endif /* EXTREME_DEBUG */ | |
744 | ||
f390d2c7 | 745 | if (!ISIS_MASK_LSP_OL_BIT (lsp->lsp_header->lsp_bits)) |
3f045a08 JB |
746 | { |
747 | if (lsp->tlv_data.is_neighs) | |
f390d2c7 | 748 | { |
3f045a08 JB |
749 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.is_neighs, node, is_neigh)) |
750 | { | |
751 | /* C.2.6 a) */ | |
752 | /* Two way connectivity */ | |
753 | if (!memcmp (is_neigh->neigh_id, root_sysid, ISIS_SYS_ID_LEN)) | |
754 | continue; | |
755 | if (!memcmp (is_neigh->neigh_id, null_sysid, ISIS_SYS_ID_LEN)) | |
756 | continue; | |
757 | dist = cost + is_neigh->metrics.metric_default; | |
758 | vtype = LSP_PSEUDO_ID (is_neigh->neigh_id) ? VTYPE_PSEUDO_IS | |
759 | : VTYPE_NONPSEUDO_IS; | |
760 | process_N (spftree, vtype, (void *) is_neigh->neigh_id, dist, | |
761 | depth + 1, family, parent); | |
762 | } | |
763 | } | |
764 | if (lsp->tlv_data.te_is_neighs) | |
765 | { | |
766 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.te_is_neighs, node, | |
767 | te_is_neigh)) | |
768 | { | |
769 | if (!memcmp (te_is_neigh->neigh_id, root_sysid, ISIS_SYS_ID_LEN)) | |
770 | continue; | |
771 | if (!memcmp (te_is_neigh->neigh_id, null_sysid, ISIS_SYS_ID_LEN)) | |
772 | continue; | |
773 | dist = cost + GET_TE_METRIC(te_is_neigh); | |
774 | vtype = LSP_PSEUDO_ID (te_is_neigh->neigh_id) ? VTYPE_PSEUDO_TE_IS | |
775 | : VTYPE_NONPSEUDO_TE_IS; | |
776 | process_N (spftree, vtype, (void *) te_is_neigh->neigh_id, dist, | |
777 | depth + 1, family, parent); | |
778 | } | |
779 | } | |
780 | } | |
f390d2c7 | 781 | |
3f045a08 JB |
782 | if (family == AF_INET && lsp->tlv_data.ipv4_int_reachs) |
783 | { | |
784 | prefix.family = AF_INET; | |
785 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.ipv4_int_reachs, node, ipreach)) | |
786 | { | |
787 | dist = cost + ipreach->metrics.metric_default; | |
788 | vtype = VTYPE_IPREACH_INTERNAL; | |
789 | prefix.u.prefix4 = ipreach->prefix; | |
790 | prefix.prefixlen = ip_masklen (ipreach->mask); | |
791 | apply_mask (&prefix); | |
792 | process_N (spftree, vtype, (void *) &prefix, dist, depth + 1, | |
793 | family, parent); | |
794 | } | |
795 | } | |
796 | if (family == AF_INET && lsp->tlv_data.ipv4_ext_reachs) | |
797 | { | |
798 | prefix.family = AF_INET; | |
799 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.ipv4_ext_reachs, node, ipreach)) | |
800 | { | |
801 | dist = cost + ipreach->metrics.metric_default; | |
802 | vtype = VTYPE_IPREACH_EXTERNAL; | |
803 | prefix.u.prefix4 = ipreach->prefix; | |
804 | prefix.prefixlen = ip_masklen (ipreach->mask); | |
805 | apply_mask (&prefix); | |
806 | process_N (spftree, vtype, (void *) &prefix, dist, depth + 1, | |
807 | family, parent); | |
808 | } | |
809 | } | |
810 | if (family == AF_INET && lsp->tlv_data.te_ipv4_reachs) | |
811 | { | |
812 | prefix.family = AF_INET; | |
813 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.te_ipv4_reachs, | |
814 | node, te_ipv4_reach)) | |
815 | { | |
948b6bef DL |
816 | assert ((te_ipv4_reach->control & 0x3F) <= IPV4_MAX_BITLEN); |
817 | ||
3f045a08 JB |
818 | dist = cost + ntohl (te_ipv4_reach->te_metric); |
819 | vtype = VTYPE_IPREACH_TE; | |
820 | prefix.u.prefix4 = newprefix2inaddr (&te_ipv4_reach->prefix_start, | |
821 | te_ipv4_reach->control); | |
822 | prefix.prefixlen = (te_ipv4_reach->control & 0x3F); | |
823 | apply_mask (&prefix); | |
824 | process_N (spftree, vtype, (void *) &prefix, dist, depth + 1, | |
825 | family, parent); | |
826 | } | |
827 | } | |
eb5d44eb | 828 | #ifdef HAVE_IPV6 |
3f045a08 JB |
829 | if (family == AF_INET6 && lsp->tlv_data.ipv6_reachs) |
830 | { | |
831 | prefix.family = AF_INET6; | |
832 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.ipv6_reachs, node, ip6reach)) | |
833 | { | |
948b6bef DL |
834 | assert (ip6reach->prefix_len <= IPV6_MAX_BITLEN); |
835 | ||
3f045a08 JB |
836 | dist = cost + ip6reach->metric; |
837 | vtype = (ip6reach->control_info & CTRL_INFO_DISTRIBUTION) ? | |
838 | VTYPE_IP6REACH_EXTERNAL : VTYPE_IP6REACH_INTERNAL; | |
839 | prefix.prefixlen = ip6reach->prefix_len; | |
840 | memcpy (&prefix.u.prefix6.s6_addr, ip6reach->prefix, | |
841 | PSIZE (ip6reach->prefix_len)); | |
842 | apply_mask (&prefix); | |
843 | process_N (spftree, vtype, (void *) &prefix, dist, depth + 1, | |
844 | family, parent); | |
f390d2c7 | 845 | } |
3f045a08 JB |
846 | } |
847 | #endif /* HAVE_IPV6 */ | |
f390d2c7 | 848 | |
eb5d44eb | 849 | if (fragnode == NULL) |
850 | fragnode = listhead (lsp->lspu.frags); | |
f390d2c7 | 851 | else |
1eb8ef25 | 852 | fragnode = listnextnode (fragnode); |
eb5d44eb | 853 | |
f390d2c7 | 854 | if (fragnode) |
855 | { | |
1eb8ef25 | 856 | lsp = listgetdata (fragnode); |
f390d2c7 | 857 | goto lspfragloop; |
858 | } | |
859 | ||
eb5d44eb | 860 | return ISIS_OK; |
861 | } | |
862 | ||
92365889 | 863 | static int |
f390d2c7 | 864 | isis_spf_process_pseudo_lsp (struct isis_spftree *spftree, |
3f045a08 JB |
865 | struct isis_lsp *lsp, uint32_t cost, |
866 | uint16_t depth, int family, | |
867 | u_char *root_sysid, | |
868 | struct isis_vertex *parent) | |
eb5d44eb | 869 | { |
3fdb2dd9 | 870 | struct listnode *node, *fragnode = NULL; |
eb5d44eb | 871 | struct is_neigh *is_neigh; |
82a8428c | 872 | struct te_is_neigh *te_is_neigh; |
eb5d44eb | 873 | enum vertextype vtype; |
3f045a08 | 874 | uint32_t dist; |
f390d2c7 | 875 | |
876 | pseudofragloop: | |
877 | ||
878 | if (lsp->lsp_header->seq_num == 0) | |
879 | { | |
880 | zlog_warn ("isis_spf_process_pseudo_lsp(): lsp with 0 seq_num" | |
881 | " - do not process"); | |
882 | return ISIS_WARNING; | |
eb5d44eb | 883 | } |
f390d2c7 | 884 | |
3f045a08 JB |
885 | #ifdef EXTREME_DEBUG |
886 | zlog_debug ("ISIS-Spf: process_pseudo_lsp %s", | |
887 | print_sys_hostname(lsp->lsp_header->lsp_id)); | |
888 | #endif /* EXTREME_DEBUG */ | |
889 | ||
890 | /* RFC3787 section 4 SHOULD ignore overload bit in pseudo LSPs */ | |
891 | ||
82a8428c | 892 | if (lsp->tlv_data.is_neighs) |
3fdb2dd9 | 893 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.is_neighs, node, is_neigh)) |
82a8428c | 894 | { |
82a8428c | 895 | /* Two way connectivity */ |
3f045a08 | 896 | if (!memcmp (is_neigh->neigh_id, root_sysid, ISIS_SYS_ID_LEN)) |
82a8428c | 897 | continue; |
3f045a08 JB |
898 | dist = cost + is_neigh->metrics.metric_default; |
899 | vtype = LSP_PSEUDO_ID (is_neigh->neigh_id) ? VTYPE_PSEUDO_IS | |
900 | : VTYPE_NONPSEUDO_IS; | |
901 | process_N (spftree, vtype, (void *) is_neigh->neigh_id, dist, | |
902 | depth + 1, family, parent); | |
82a8428c | 903 | } |
904 | if (lsp->tlv_data.te_is_neighs) | |
3fdb2dd9 | 905 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.te_is_neighs, node, te_is_neigh)) |
82a8428c | 906 | { |
82a8428c | 907 | /* Two way connectivity */ |
3f045a08 | 908 | if (!memcmp (te_is_neigh->neigh_id, root_sysid, ISIS_SYS_ID_LEN)) |
82a8428c | 909 | continue; |
3f045a08 JB |
910 | dist = cost + GET_TE_METRIC(te_is_neigh); |
911 | vtype = LSP_PSEUDO_ID (te_is_neigh->neigh_id) ? VTYPE_PSEUDO_TE_IS | |
912 | : VTYPE_NONPSEUDO_TE_IS; | |
913 | process_N (spftree, vtype, (void *) te_is_neigh->neigh_id, dist, | |
914 | depth + 1, family, parent); | |
82a8428c | 915 | } |
f390d2c7 | 916 | |
eb5d44eb | 917 | if (fragnode == NULL) |
918 | fragnode = listhead (lsp->lspu.frags); | |
f390d2c7 | 919 | else |
1eb8ef25 | 920 | fragnode = listnextnode (fragnode); |
eb5d44eb | 921 | |
f390d2c7 | 922 | if (fragnode) |
923 | { | |
1eb8ef25 | 924 | lsp = listgetdata (fragnode); |
f390d2c7 | 925 | goto pseudofragloop; |
926 | } | |
eb5d44eb | 927 | |
eb5d44eb | 928 | return ISIS_OK; |
929 | } | |
f390d2c7 | 930 | |
92365889 | 931 | static int |
3f045a08 JB |
932 | isis_spf_preload_tent (struct isis_spftree *spftree, int level, |
933 | int family, u_char *root_sysid, | |
934 | struct isis_vertex *parent) | |
eb5d44eb | 935 | { |
eb5d44eb | 936 | struct isis_circuit *circuit; |
3fdb2dd9 | 937 | struct listnode *cnode, *anode, *ipnode; |
eb5d44eb | 938 | struct isis_adjacency *adj; |
939 | struct isis_lsp *lsp; | |
940 | struct list *adj_list; | |
941 | struct list *adjdb; | |
942 | struct prefix_ipv4 *ipv4; | |
943 | struct prefix prefix; | |
944 | int retval = ISIS_OK; | |
945 | u_char lsp_id[ISIS_SYS_ID_LEN + 2]; | |
3f045a08 | 946 | static u_char null_lsp_id[ISIS_SYS_ID_LEN + 2]; |
eb5d44eb | 947 | #ifdef HAVE_IPV6 |
948 | struct prefix_ipv6 *ipv6; | |
949 | #endif /* HAVE_IPV6 */ | |
f390d2c7 | 950 | |
3f045a08 | 951 | for (ALL_LIST_ELEMENTS_RO (spftree->area->circuit_list, cnode, circuit)) |
f390d2c7 | 952 | { |
f390d2c7 | 953 | if (circuit->state != C_STATE_UP) |
954 | continue; | |
3f045a08 | 955 | if (!(circuit->is_type & level)) |
f390d2c7 | 956 | continue; |
957 | if (family == AF_INET && !circuit->ip_router) | |
958 | continue; | |
eb5d44eb | 959 | #ifdef HAVE_IPV6 |
f390d2c7 | 960 | if (family == AF_INET6 && !circuit->ipv6_router) |
961 | continue; | |
eb5d44eb | 962 | #endif /* HAVE_IPV6 */ |
f390d2c7 | 963 | /* |
964 | * Add IP(v6) addresses of this circuit | |
965 | */ | |
966 | if (family == AF_INET) | |
967 | { | |
968 | prefix.family = AF_INET; | |
3fdb2dd9 | 969 | for (ALL_LIST_ELEMENTS_RO (circuit->ip_addrs, ipnode, ipv4)) |
f390d2c7 | 970 | { |
f390d2c7 | 971 | prefix.u.prefix4 = ipv4->prefix; |
972 | prefix.prefixlen = ipv4->prefixlen; | |
3f045a08 | 973 | apply_mask (&prefix); |
f390d2c7 | 974 | isis_spf_add_local (spftree, VTYPE_IPREACH_INTERNAL, &prefix, |
3f045a08 | 975 | NULL, 0, family, parent); |
f390d2c7 | 976 | } |
977 | } | |
eb5d44eb | 978 | #ifdef HAVE_IPV6 |
f390d2c7 | 979 | if (family == AF_INET6) |
980 | { | |
981 | prefix.family = AF_INET6; | |
3fdb2dd9 | 982 | for (ALL_LIST_ELEMENTS_RO (circuit->ipv6_non_link, ipnode, ipv6)) |
f390d2c7 | 983 | { |
f390d2c7 | 984 | prefix.prefixlen = ipv6->prefixlen; |
985 | prefix.u.prefix6 = ipv6->prefix; | |
3f045a08 | 986 | apply_mask (&prefix); |
f390d2c7 | 987 | isis_spf_add_local (spftree, VTYPE_IP6REACH_INTERNAL, |
3f045a08 | 988 | &prefix, NULL, 0, family, parent); |
f390d2c7 | 989 | } |
990 | } | |
eb5d44eb | 991 | #endif /* HAVE_IPV6 */ |
f390d2c7 | 992 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) |
993 | { | |
994 | /* | |
995 | * Add the adjacencies | |
996 | */ | |
997 | adj_list = list_new (); | |
998 | adjdb = circuit->u.bc.adjdb[level - 1]; | |
999 | isis_adj_build_up_list (adjdb, adj_list); | |
1000 | if (listcount (adj_list) == 0) | |
1001 | { | |
1002 | list_delete (adj_list); | |
c89c05dd | 1003 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1004 | zlog_debug ("ISIS-Spf: no L%d adjacencies on circuit %s", | |
1005 | level, circuit->interface->name); | |
f390d2c7 | 1006 | continue; |
1007 | } | |
3f045a08 | 1008 | for (ALL_LIST_ELEMENTS_RO (adj_list, anode, adj)) |
f390d2c7 | 1009 | { |
f390d2c7 | 1010 | if (!speaks (&adj->nlpids, family)) |
f390d2c7 | 1011 | continue; |
f390d2c7 | 1012 | switch (adj->sys_type) |
1013 | { | |
1014 | case ISIS_SYSTYPE_ES: | |
1015 | isis_spf_add_local (spftree, VTYPE_ES, adj->sysid, adj, | |
3f045a08 JB |
1016 | circuit->te_metric[level - 1], |
1017 | family, parent); | |
f390d2c7 | 1018 | break; |
1019 | case ISIS_SYSTYPE_IS: | |
1020 | case ISIS_SYSTYPE_L1_IS: | |
1021 | case ISIS_SYSTYPE_L2_IS: | |
3f045a08 JB |
1022 | isis_spf_add_local (spftree, |
1023 | spftree->area->oldmetric ? | |
1024 | VTYPE_NONPSEUDO_IS : | |
1025 | VTYPE_NONPSEUDO_TE_IS, | |
1026 | adj->sysid, adj, | |
1027 | circuit->te_metric[level - 1], | |
1028 | family, parent); | |
f390d2c7 | 1029 | memcpy (lsp_id, adj->sysid, ISIS_SYS_ID_LEN); |
1030 | LSP_PSEUDO_ID (lsp_id) = 0; | |
1031 | LSP_FRAGMENT (lsp_id) = 0; | |
3f045a08 | 1032 | lsp = lsp_search (lsp_id, spftree->area->lspdb[level - 1]); |
e38e0df0 | 1033 | if (lsp == NULL || lsp->lsp_header->rem_lifetime == 0) |
3f045a08 JB |
1034 | zlog_warn ("ISIS-Spf: No LSP %s found for IS adjacency " |
1035 | "L%d on %s (ID %u)", | |
1036 | rawlspid_print (lsp_id), level, | |
1037 | circuit->interface->name, circuit->circuit_id); | |
f390d2c7 | 1038 | break; |
1039 | case ISIS_SYSTYPE_UNKNOWN: | |
1040 | default: | |
1041 | zlog_warn ("isis_spf_preload_tent unknow adj type"); | |
1042 | } | |
f390d2c7 | 1043 | } |
1044 | list_delete (adj_list); | |
1045 | /* | |
1046 | * Add the pseudonode | |
1047 | */ | |
1048 | if (level == 1) | |
1049 | memcpy (lsp_id, circuit->u.bc.l1_desig_is, ISIS_SYS_ID_LEN + 1); | |
1050 | else | |
1051 | memcpy (lsp_id, circuit->u.bc.l2_desig_is, ISIS_SYS_ID_LEN + 1); | |
3f045a08 JB |
1052 | /* can happen during DR reboot */ |
1053 | if (memcmp (lsp_id, null_lsp_id, ISIS_SYS_ID_LEN + 1) == 0) | |
1054 | { | |
1055 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1056 | zlog_debug ("ISIS-Spf: No L%d DR on %s (ID %d)", | |
1057 | level, circuit->interface->name, circuit->circuit_id); | |
1058 | continue; | |
1059 | } | |
f390d2c7 | 1060 | adj = isis_adj_lookup (lsp_id, adjdb); |
1061 | /* if no adj, we are the dis or error */ | |
1062 | if (!adj && !circuit->u.bc.is_dr[level - 1]) | |
1063 | { | |
3f045a08 JB |
1064 | zlog_warn ("ISIS-Spf: No adjacency found from root " |
1065 | "to L%d DR %s on %s (ID %d)", | |
1066 | level, rawlspid_print (lsp_id), | |
1067 | circuit->interface->name, circuit->circuit_id); | |
1068 | continue; | |
f390d2c7 | 1069 | } |
3f045a08 | 1070 | lsp = lsp_search (lsp_id, spftree->area->lspdb[level - 1]); |
f390d2c7 | 1071 | if (lsp == NULL || lsp->lsp_header->rem_lifetime == 0) |
1072 | { | |
3f045a08 JB |
1073 | zlog_warn ("ISIS-Spf: No lsp (%p) found from root " |
1074 | "to L%d DR %s on %s (ID %d)", | |
1075 | lsp, level, rawlspid_print (lsp_id), | |
1076 | circuit->interface->name, circuit->circuit_id); | |
1077 | continue; | |
f390d2c7 | 1078 | } |
3f045a08 JB |
1079 | isis_spf_process_pseudo_lsp (spftree, lsp, |
1080 | circuit->te_metric[level - 1], 0, | |
1081 | family, root_sysid, parent); | |
f390d2c7 | 1082 | } |
1083 | else if (circuit->circ_type == CIRCUIT_T_P2P) | |
1084 | { | |
1085 | adj = circuit->u.p2p.neighbor; | |
1086 | if (!adj) | |
1087 | continue; | |
1088 | switch (adj->sys_type) | |
1089 | { | |
1090 | case ISIS_SYSTYPE_ES: | |
1091 | isis_spf_add_local (spftree, VTYPE_ES, adj->sysid, adj, | |
3f045a08 JB |
1092 | circuit->te_metric[level - 1], family, |
1093 | parent); | |
f390d2c7 | 1094 | break; |
1095 | case ISIS_SYSTYPE_IS: | |
1096 | case ISIS_SYSTYPE_L1_IS: | |
1097 | case ISIS_SYSTYPE_L2_IS: | |
1098 | if (speaks (&adj->nlpids, family)) | |
3f045a08 JB |
1099 | isis_spf_add_local (spftree, |
1100 | spftree->area->oldmetric ? | |
1101 | VTYPE_NONPSEUDO_IS : | |
1102 | VTYPE_NONPSEUDO_TE_IS, | |
1103 | adj->sysid, | |
82a8428c | 1104 | adj, circuit->te_metric[level - 1], |
3f045a08 | 1105 | family, parent); |
f390d2c7 | 1106 | break; |
1107 | case ISIS_SYSTYPE_UNKNOWN: | |
1108 | default: | |
3f045a08 | 1109 | zlog_warn ("isis_spf_preload_tent unknown adj type"); |
f390d2c7 | 1110 | break; |
1111 | } | |
1112 | } | |
3f045a08 JB |
1113 | else if (circuit->circ_type == CIRCUIT_T_LOOPBACK) |
1114 | { | |
1115 | continue; | |
1116 | } | |
eb5d44eb | 1117 | else |
f390d2c7 | 1118 | { |
1119 | zlog_warn ("isis_spf_preload_tent unsupported media"); | |
1120 | retval = ISIS_WARNING; | |
1121 | } | |
eb5d44eb | 1122 | } |
eb5d44eb | 1123 | |
1124 | return retval; | |
1125 | } | |
1126 | ||
1127 | /* | |
1128 | * The parent(s) for vertex is set when added to TENT list | |
1129 | * now we just put the child pointer(s) in place | |
1130 | */ | |
92365889 | 1131 | static void |
eb5d44eb | 1132 | add_to_paths (struct isis_spftree *spftree, struct isis_vertex *vertex, |
3f045a08 | 1133 | int level) |
eb5d44eb | 1134 | { |
eb5d44eb | 1135 | u_char buff[BUFSIZ]; |
3f045a08 JB |
1136 | |
1137 | if (isis_find_vertex (spftree->paths, vertex->N.id, vertex->type)) | |
1138 | return; | |
eb5d44eb | 1139 | listnode_add (spftree->paths, vertex); |
1140 | ||
f390d2c7 | 1141 | #ifdef EXTREME_DEBUG |
3f045a08 JB |
1142 | zlog_debug ("ISIS-Spf: added %s %s %s depth %d dist %d to PATHS", |
1143 | print_sys_hostname (vertex->N.id), | |
529d65b3 | 1144 | vtype2string (vertex->type), vid2string (vertex, buff), |
1145 | vertex->depth, vertex->d_N); | |
f390d2c7 | 1146 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 1147 | |
f390d2c7 | 1148 | if (vertex->type > VTYPE_ES) |
1149 | { | |
1150 | if (listcount (vertex->Adj_N) > 0) | |
fac1f7cc | 1151 | isis_route_create ((struct prefix *) &vertex->N.prefix, vertex->d_N, |
3f045a08 | 1152 | vertex->depth, vertex->Adj_N, spftree->area, level); |
f390d2c7 | 1153 | else if (isis->debugs & DEBUG_SPF_EVENTS) |
3f045a08 JB |
1154 | zlog_debug ("ISIS-Spf: no adjacencies do not install route for " |
1155 | "%s depth %d dist %d", vid2string (vertex, buff), | |
1156 | vertex->depth, vertex->d_N); | |
f390d2c7 | 1157 | } |
1158 | ||
eb5d44eb | 1159 | return; |
1160 | } | |
1161 | ||
92365889 | 1162 | static void |
eb5d44eb | 1163 | init_spt (struct isis_spftree *spftree) |
1164 | { | |
f7c43dcb | 1165 | spftree->tents->del = spftree->paths->del = (void (*)(void *)) isis_vertex_del; |
eb5d44eb | 1166 | list_delete_all_node (spftree->tents); |
1167 | list_delete_all_node (spftree->paths); | |
1168 | spftree->tents->del = spftree->paths->del = NULL; | |
eb5d44eb | 1169 | return; |
1170 | } | |
1171 | ||
92365889 | 1172 | static int |
3f045a08 | 1173 | isis_run_spf (struct isis_area *area, int level, int family, u_char *sysid) |
eb5d44eb | 1174 | { |
1175 | int retval = ISIS_OK; | |
1176 | struct listnode *node; | |
1177 | struct isis_vertex *vertex; | |
3f045a08 | 1178 | struct isis_vertex *root_vertex; |
f390d2c7 | 1179 | struct isis_spftree *spftree = NULL; |
eb5d44eb | 1180 | u_char lsp_id[ISIS_SYS_ID_LEN + 2]; |
1181 | struct isis_lsp *lsp; | |
fac1f7cc | 1182 | struct route_table *table = NULL; |
43057bf2 | 1183 | struct timeval time_now; |
e38e0df0 SV |
1184 | unsigned long long start_time, end_time; |
1185 | ||
1186 | /* Get time that can't roll backwards. */ | |
43057bf2 | 1187 | quagga_gettime(QUAGGA_CLK_MONOTONIC, &time_now); |
e38e0df0 | 1188 | start_time = time_now.tv_sec; |
43057bf2 | 1189 | start_time = (start_time * 1000000) + time_now.tv_usec; |
f390d2c7 | 1190 | |
eb5d44eb | 1191 | if (family == AF_INET) |
1192 | spftree = area->spftree[level - 1]; | |
1193 | #ifdef HAVE_IPV6 | |
1194 | else if (family == AF_INET6) | |
1195 | spftree = area->spftree6[level - 1]; | |
1196 | #endif | |
eb5d44eb | 1197 | assert (spftree); |
3f045a08 | 1198 | assert (sysid); |
eb5d44eb | 1199 | |
fac1f7cc | 1200 | /* Make all routes in current route table inactive. */ |
1201 | if (family == AF_INET) | |
1202 | table = area->route_table[level - 1]; | |
41b36e90 | 1203 | #ifdef HAVE_IPV6 |
fac1f7cc | 1204 | else if (family == AF_INET6) |
1205 | table = area->route_table6[level - 1]; | |
41b36e90 | 1206 | #endif |
fac1f7cc | 1207 | |
3f045a08 | 1208 | isis_route_invalidate_table (area, table); |
fac1f7cc | 1209 | |
eb5d44eb | 1210 | /* |
1211 | * C.2.5 Step 0 | |
1212 | */ | |
1213 | init_spt (spftree); | |
1214 | /* a) */ | |
3f045a08 | 1215 | root_vertex = isis_spf_add_root (spftree, level, sysid); |
eb5d44eb | 1216 | /* b) */ |
3f045a08 JB |
1217 | retval = isis_spf_preload_tent (spftree, level, family, sysid, root_vertex); |
1218 | if (retval != ISIS_OK) | |
1219 | { | |
1220 | zlog_warn ("ISIS-Spf: failed to load TENT SPF-root:%s", print_sys_hostname(sysid)); | |
1221 | goto out; | |
1222 | } | |
f390d2c7 | 1223 | |
eb5d44eb | 1224 | /* |
1225 | * C.2.7 Step 2 | |
1226 | */ | |
f390d2c7 | 1227 | if (listcount (spftree->tents) == 0) |
1228 | { | |
3f045a08 | 1229 | zlog_warn ("ISIS-Spf: TENT is empty SPF-root:%s", print_sys_hostname(sysid)); |
13fb40ac | 1230 | goto out; |
f390d2c7 | 1231 | } |
1232 | ||
1233 | while (listcount (spftree->tents) > 0) | |
1234 | { | |
1235 | node = listhead (spftree->tents); | |
1eb8ef25 | 1236 | vertex = listgetdata (node); |
3f045a08 JB |
1237 | |
1238 | #ifdef EXTREME_DEBUG | |
1239 | zlog_debug ("ISIS-Spf: get TENT node %s %s depth %d dist %d to PATHS", | |
1240 | print_sys_hostname (vertex->N.id), | |
1241 | vtype2string (vertex->type), vertex->depth, vertex->d_N); | |
1242 | #endif /* EXTREME_DEBUG */ | |
1243 | ||
1244 | /* Remove from tent list and add to paths list */ | |
f390d2c7 | 1245 | list_delete_node (spftree->tents, node); |
3f045a08 JB |
1246 | add_to_paths (spftree, vertex, level); |
1247 | switch (vertex->type) | |
1248 | { | |
1249 | case VTYPE_PSEUDO_IS: | |
1250 | case VTYPE_NONPSEUDO_IS: | |
1251 | case VTYPE_PSEUDO_TE_IS: | |
1252 | case VTYPE_NONPSEUDO_TE_IS: | |
f390d2c7 | 1253 | memcpy (lsp_id, vertex->N.id, ISIS_SYS_ID_LEN + 1); |
1254 | LSP_FRAGMENT (lsp_id) = 0; | |
1255 | lsp = lsp_search (lsp_id, area->lspdb[level - 1]); | |
e38e0df0 | 1256 | if (lsp && lsp->lsp_header->rem_lifetime != 0) |
f390d2c7 | 1257 | { |
1258 | if (LSP_PSEUDO_ID (lsp_id)) | |
1259 | { | |
1260 | isis_spf_process_pseudo_lsp (spftree, lsp, vertex->d_N, | |
3f045a08 JB |
1261 | vertex->depth, family, sysid, |
1262 | vertex); | |
f390d2c7 | 1263 | } |
1264 | else | |
1265 | { | |
1266 | isis_spf_process_lsp (spftree, lsp, vertex->d_N, | |
3f045a08 | 1267 | vertex->depth, family, sysid, vertex); |
f390d2c7 | 1268 | } |
1269 | } | |
1270 | else | |
1271 | { | |
1272 | zlog_warn ("ISIS-Spf: No LSP found for %s", | |
1273 | rawlspid_print (lsp_id)); | |
1274 | } | |
3f045a08 JB |
1275 | break; |
1276 | default:; | |
eb5d44eb | 1277 | } |
eb5d44eb | 1278 | } |
f390d2c7 | 1279 | |
13fb40ac | 1280 | out: |
3f045a08 | 1281 | isis_route_validate (area); |
eb5d44eb | 1282 | spftree->pending = 0; |
e38e0df0 SV |
1283 | spftree->runcount++; |
1284 | spftree->last_run_timestamp = time (NULL); | |
43057bf2 | 1285 | quagga_gettime(QUAGGA_CLK_MONOTONIC, &time_now); |
e38e0df0 | 1286 | end_time = time_now.tv_sec; |
43057bf2 | 1287 | end_time = (end_time * 1000000) + time_now.tv_usec; |
e38e0df0 SV |
1288 | spftree->last_run_duration = end_time - start_time; |
1289 | ||
f390d2c7 | 1290 | |
eb5d44eb | 1291 | return retval; |
1292 | } | |
1293 | ||
1294 | int | |
1295 | isis_run_spf_l1 (struct thread *thread) | |
1296 | { | |
1297 | struct isis_area *area; | |
1298 | int retval = ISIS_OK; | |
1299 | ||
f390d2c7 | 1300 | area = THREAD_ARG (thread); |
eb5d44eb | 1301 | assert (area); |
1302 | ||
12a5cae7 | 1303 | area->spftree[0]->t_spf = NULL; |
3f045a08 | 1304 | area->spftree[0]->pending = 0; |
12a5cae7 | 1305 | |
f390d2c7 | 1306 | if (!(area->is_type & IS_LEVEL_1)) |
1307 | { | |
1308 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
12a5cae7 | 1309 | zlog_warn ("ISIS-SPF (%s) area does not share level", |
1310 | area->area_tag); | |
f390d2c7 | 1311 | return ISIS_WARNING; |
1312 | } | |
1313 | ||
1314 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
529d65b3 | 1315 | zlog_debug ("ISIS-Spf (%s) L1 SPF needed, periodic SPF", area->area_tag); |
eb5d44eb | 1316 | |
eb5d44eb | 1317 | if (area->ip_circuits) |
3f045a08 | 1318 | retval = isis_run_spf (area, 1, AF_INET, isis->sysid); |
12a5cae7 | 1319 | |
eb5d44eb | 1320 | return retval; |
1321 | } | |
1322 | ||
1323 | int | |
1324 | isis_run_spf_l2 (struct thread *thread) | |
1325 | { | |
1326 | struct isis_area *area; | |
1327 | int retval = ISIS_OK; | |
1328 | ||
f390d2c7 | 1329 | area = THREAD_ARG (thread); |
eb5d44eb | 1330 | assert (area); |
f390d2c7 | 1331 | |
12a5cae7 | 1332 | area->spftree[1]->t_spf = NULL; |
3f045a08 | 1333 | area->spftree[1]->pending = 0; |
12a5cae7 | 1334 | |
f390d2c7 | 1335 | if (!(area->is_type & IS_LEVEL_2)) |
1336 | { | |
1337 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
12a5cae7 | 1338 | zlog_warn ("ISIS-SPF (%s) area does not share level", area->area_tag); |
f390d2c7 | 1339 | return ISIS_WARNING; |
1340 | } | |
1341 | ||
1342 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
529d65b3 | 1343 | zlog_debug ("ISIS-Spf (%s) L2 SPF needed, periodic SPF", area->area_tag); |
eb5d44eb | 1344 | |
1345 | if (area->ip_circuits) | |
3f045a08 | 1346 | retval = isis_run_spf (area, 2, AF_INET, isis->sysid); |
eb5d44eb | 1347 | |
1348 | return retval; | |
1349 | } | |
1350 | ||
f390d2c7 | 1351 | int |
eb5d44eb | 1352 | isis_spf_schedule (struct isis_area *area, int level) |
1353 | { | |
eb5d44eb | 1354 | struct isis_spftree *spftree = area->spftree[level - 1]; |
3f045a08 | 1355 | time_t now = time (NULL); |
e38e0df0 | 1356 | int diff = now - spftree->last_run_timestamp; |
eb5d44eb | 1357 | |
3f045a08 JB |
1358 | assert (diff >= 0); |
1359 | assert (area->is_type & level); | |
eb5d44eb | 1360 | |
3f045a08 JB |
1361 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1362 | zlog_debug ("ISIS-Spf (%s) L%d SPF schedule called, lastrun %d sec ago", | |
1363 | area->area_tag, level, diff); | |
f390d2c7 | 1364 | |
3f045a08 JB |
1365 | if (spftree->pending) |
1366 | return ISIS_OK; | |
12a5cae7 | 1367 | |
1368 | THREAD_TIMER_OFF (spftree->t_spf); | |
f390d2c7 | 1369 | |
e38e0df0 SV |
1370 | /* wait configured min_spf_interval before doing the SPF */ |
1371 | if (diff >= area->min_spf_interval[level-1]) | |
3f045a08 | 1372 | return isis_run_spf (area, level, AF_INET, isis->sysid); |
f390d2c7 | 1373 | |
3f045a08 JB |
1374 | if (level == 1) |
1375 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf_l1, area, | |
e38e0df0 | 1376 | area->min_spf_interval[0] - diff); |
f390d2c7 | 1377 | else |
3f045a08 | 1378 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf_l2, area, |
e38e0df0 | 1379 | area->min_spf_interval[1] - diff); |
eb5d44eb | 1380 | |
3f045a08 JB |
1381 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1382 | zlog_debug ("ISIS-Spf (%s) L%d SPF scheduled %d sec from now", | |
e38e0df0 | 1383 | area->area_tag, level, area->min_spf_interval[level-1] - diff); |
3f045a08 JB |
1384 | |
1385 | spftree->pending = 1; | |
1386 | ||
1387 | return ISIS_OK; | |
eb5d44eb | 1388 | } |
1389 | ||
1390 | #ifdef HAVE_IPV6 | |
92365889 | 1391 | static int |
12a5cae7 | 1392 | isis_run_spf6_l1 (struct thread *thread) |
1393 | { | |
1394 | struct isis_area *area; | |
1395 | int retval = ISIS_OK; | |
1396 | ||
1397 | area = THREAD_ARG (thread); | |
1398 | assert (area); | |
1399 | ||
1400 | area->spftree6[0]->t_spf = NULL; | |
3f045a08 | 1401 | area->spftree6[0]->pending = 0; |
12a5cae7 | 1402 | |
1403 | if (!(area->is_type & IS_LEVEL_1)) | |
1404 | { | |
1405 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
3f045a08 | 1406 | zlog_warn ("ISIS-SPF (%s) area does not share level", area->area_tag); |
12a5cae7 | 1407 | return ISIS_WARNING; |
1408 | } | |
1409 | ||
1410 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
529d65b3 | 1411 | zlog_debug ("ISIS-Spf (%s) L1 SPF needed, periodic SPF", area->area_tag); |
12a5cae7 | 1412 | |
1413 | if (area->ipv6_circuits) | |
3f045a08 | 1414 | retval = isis_run_spf (area, 1, AF_INET6, isis->sysid); |
12a5cae7 | 1415 | |
1416 | return retval; | |
1417 | } | |
1418 | ||
92365889 | 1419 | static int |
12a5cae7 | 1420 | isis_run_spf6_l2 (struct thread *thread) |
1421 | { | |
1422 | struct isis_area *area; | |
1423 | int retval = ISIS_OK; | |
1424 | ||
1425 | area = THREAD_ARG (thread); | |
1426 | assert (area); | |
1427 | ||
1428 | area->spftree6[1]->t_spf = NULL; | |
3f045a08 | 1429 | area->spftree6[1]->pending = 0; |
12a5cae7 | 1430 | |
1431 | if (!(area->is_type & IS_LEVEL_2)) | |
1432 | { | |
1433 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1434 | zlog_warn ("ISIS-SPF (%s) area does not share level", area->area_tag); | |
1435 | return ISIS_WARNING; | |
1436 | } | |
1437 | ||
1438 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
fac1f7cc | 1439 | zlog_debug ("ISIS-Spf (%s) L2 SPF needed, periodic SPF.", area->area_tag); |
12a5cae7 | 1440 | |
1441 | if (area->ipv6_circuits) | |
3f045a08 | 1442 | retval = isis_run_spf (area, 2, AF_INET6, isis->sysid); |
12a5cae7 | 1443 | |
1444 | return retval; | |
1445 | } | |
1446 | ||
f390d2c7 | 1447 | int |
eb5d44eb | 1448 | isis_spf_schedule6 (struct isis_area *area, int level) |
1449 | { | |
1450 | int retval = ISIS_OK; | |
1451 | struct isis_spftree *spftree = area->spftree6[level - 1]; | |
e38e0df0 SV |
1452 | time_t now = time (NULL); |
1453 | time_t diff = now - spftree->last_run_timestamp; | |
1454 | ||
1455 | assert (diff >= 0); | |
1456 | assert (area->is_type & level); | |
1457 | ||
1458 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1459 | zlog_debug ("ISIS-Spf (%s) L%d SPF schedule called, lastrun %d sec ago", | |
1460 | area->area_tag, level, diff); | |
eb5d44eb | 1461 | |
1462 | if (spftree->pending) | |
e38e0df0 | 1463 | return ISIS_OK; |
eb5d44eb | 1464 | |
12a5cae7 | 1465 | THREAD_TIMER_OFF (spftree->t_spf); |
eb5d44eb | 1466 | |
e38e0df0 SV |
1467 | /* wait configured min_spf_interval before doing the SPF */ |
1468 | if (diff >= area->min_spf_interval[level-1]) | |
1469 | return isis_run_spf (area, level, AF_INET6, isis->sysid); | |
1470 | ||
1471 | if (level == 1) | |
1472 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf6_l1, area, | |
1473 | area->min_spf_interval[0] - diff); | |
3f045a08 | 1474 | else |
e38e0df0 SV |
1475 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf6_l2, area, |
1476 | area->min_spf_interval[1] - diff); | |
3f045a08 | 1477 | |
e38e0df0 SV |
1478 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1479 | zlog_debug ("ISIS-Spf (%s) L%d SPF scheduled %d sec from now", | |
1480 | area->area_tag, level, area->min_spf_interval[level-1] - diff); | |
f390d2c7 | 1481 | |
e38e0df0 | 1482 | spftree->pending = 1; |
eb5d44eb | 1483 | |
1484 | return retval; | |
1485 | } | |
eb5d44eb | 1486 | #endif |
1487 | ||
92365889 | 1488 | static void |
3f045a08 | 1489 | isis_print_paths (struct vty *vty, struct list *paths, u_char *root_sysid) |
eb5d44eb | 1490 | { |
1eb8ef25 | 1491 | struct listnode *node; |
3f045a08 | 1492 | struct listnode *anode; |
eb5d44eb | 1493 | struct isis_vertex *vertex; |
eb5d44eb | 1494 | struct isis_adjacency *adj; |
e8aca32f | 1495 | u_char buff[BUFSIZ]; |
eb5d44eb | 1496 | |
3f045a08 JB |
1497 | vty_out (vty, "Vertex Type Metric " |
1498 | "Next-Hop Interface Parent%s", VTY_NEWLINE); | |
1499 | ||
1500 | for (ALL_LIST_ELEMENTS_RO (paths, node, vertex)) { | |
1501 | if (memcmp (vertex->N.id, root_sysid, ISIS_SYS_ID_LEN) == 0) { | |
1502 | vty_out (vty, "%-20s %-12s %-6s", print_sys_hostname (root_sysid), | |
1503 | "", ""); | |
1504 | vty_out (vty, "%-30s", ""); | |
1505 | } else { | |
1506 | int rows = 0; | |
1507 | vty_out (vty, "%-20s %-12s %-6u ", vid2string (vertex, buff), | |
1508 | vtype2string (vertex->type), vertex->d_N); | |
1509 | for (ALL_LIST_ELEMENTS_RO (vertex->Adj_N, anode, adj)) { | |
1510 | if (adj) { | |
1511 | if (rows) { | |
1512 | vty_out (vty, "%s", VTY_NEWLINE); | |
1513 | vty_out (vty, "%-20s %-12s %-6s ", "", "", ""); | |
1514 | } | |
1515 | vty_out (vty, "%-20s %-9s ", | |
1516 | print_sys_hostname (adj->sysid), | |
1517 | adj->circuit->interface->name); | |
1518 | ++rows; | |
1519 | } | |
1520 | } | |
1521 | if (rows == 0) | |
1522 | vty_out (vty, "%-30s ", ""); | |
1523 | } | |
1eb8ef25 | 1524 | |
3f045a08 JB |
1525 | /* Print list of parents for the ECMP DAG */ |
1526 | if (listcount (vertex->parents) > 0) { | |
1527 | struct listnode *pnode; | |
1528 | struct isis_vertex *pvertex; | |
1529 | int rows = 0; | |
1530 | for (ALL_LIST_ELEMENTS_RO (vertex->parents, pnode, pvertex)) { | |
1531 | if (rows) { | |
1532 | vty_out (vty, "%s", VTY_NEWLINE); | |
1533 | vty_out (vty, "%-72s", ""); | |
1534 | } | |
1535 | vty_out (vty, "%s(%d)", | |
1536 | vid2string (pvertex, buff), pvertex->type); | |
1537 | ++rows; | |
f390d2c7 | 1538 | } |
3f045a08 JB |
1539 | } else { |
1540 | vty_out (vty, " NULL "); | |
1541 | } | |
1542 | ||
1543 | #if 0 | |
1544 | if (listcount (vertex->children) > 0) { | |
1545 | struct listnode *cnode; | |
1546 | struct isis_vertex *cvertex; | |
1547 | for (ALL_LIST_ELEMENTS_RO (vertex->children, cnode, cvertex)) { | |
1548 | vty_out (vty, "%s", VTY_NEWLINE); | |
1549 | vty_out (vty, "%-72s", ""); | |
1550 | vty_out (vty, "%s(%d) ", | |
1551 | vid2string (cvertex, buff), cvertex->type); | |
f390d2c7 | 1552 | } |
1553 | } | |
eb5d44eb | 1554 | #endif |
3f045a08 | 1555 | vty_out (vty, "%s", VTY_NEWLINE); |
f390d2c7 | 1556 | } |
eb5d44eb | 1557 | } |
1558 | ||
1559 | DEFUN (show_isis_topology, | |
1560 | show_isis_topology_cmd, | |
1561 | "show isis topology", | |
1562 | SHOW_STR | |
1563 | "IS-IS information\n" | |
1564 | "IS-IS paths to Intermediate Systems\n") | |
1565 | { | |
1566 | struct listnode *node; | |
1567 | struct isis_area *area; | |
1568 | int level; | |
f390d2c7 | 1569 | |
eb5d44eb | 1570 | if (!isis->area_list || isis->area_list->count == 0) |
1571 | return CMD_SUCCESS; | |
1572 | ||
1eb8ef25 | 1573 | for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area)) |
f390d2c7 | 1574 | { |
f390d2c7 | 1575 | vty_out (vty, "Area %s:%s", area->area_tag ? area->area_tag : "null", |
1576 | VTY_NEWLINE); | |
1577 | ||
1578 | for (level = 0; level < ISIS_LEVELS; level++) | |
1579 | { | |
1580 | if (area->ip_circuits > 0 && area->spftree[level] | |
1581 | && area->spftree[level]->paths->count > 0) | |
1582 | { | |
1583 | vty_out (vty, "IS-IS paths to level-%d routers that speak IP%s", | |
1584 | level + 1, VTY_NEWLINE); | |
3f045a08 JB |
1585 | isis_print_paths (vty, area->spftree[level]->paths, isis->sysid); |
1586 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1587 | } |
eb5d44eb | 1588 | #ifdef HAVE_IPV6 |
f390d2c7 | 1589 | if (area->ipv6_circuits > 0 && area->spftree6[level] |
1590 | && area->spftree6[level]->paths->count > 0) | |
1591 | { | |
1592 | vty_out (vty, | |
1593 | "IS-IS paths to level-%d routers that speak IPv6%s", | |
1594 | level + 1, VTY_NEWLINE); | |
3f045a08 JB |
1595 | isis_print_paths (vty, area->spftree6[level]->paths, isis->sysid); |
1596 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1597 | } |
eb5d44eb | 1598 | #endif /* HAVE_IPV6 */ |
f390d2c7 | 1599 | } |
3f045a08 JB |
1600 | |
1601 | vty_out (vty, "%s", VTY_NEWLINE); | |
eb5d44eb | 1602 | } |
eb5d44eb | 1603 | |
1604 | return CMD_SUCCESS; | |
f390d2c7 | 1605 | } |
eb5d44eb | 1606 | |
1607 | DEFUN (show_isis_topology_l1, | |
1608 | show_isis_topology_l1_cmd, | |
1609 | "show isis topology level-1", | |
1610 | SHOW_STR | |
1611 | "IS-IS information\n" | |
1612 | "IS-IS paths to Intermediate Systems\n" | |
1613 | "Paths to all level-1 routers in the area\n") | |
1614 | { | |
1615 | struct listnode *node; | |
1616 | struct isis_area *area; | |
f390d2c7 | 1617 | |
eb5d44eb | 1618 | if (!isis->area_list || isis->area_list->count == 0) |
1619 | return CMD_SUCCESS; | |
1620 | ||
1eb8ef25 | 1621 | for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area)) |
f390d2c7 | 1622 | { |
f390d2c7 | 1623 | vty_out (vty, "Area %s:%s", area->area_tag ? area->area_tag : "null", |
1624 | VTY_NEWLINE); | |
1625 | ||
1626 | if (area->ip_circuits > 0 && area->spftree[0] | |
1627 | && area->spftree[0]->paths->count > 0) | |
1628 | { | |
1629 | vty_out (vty, "IS-IS paths to level-1 routers that speak IP%s", | |
1630 | VTY_NEWLINE); | |
3f045a08 JB |
1631 | isis_print_paths (vty, area->spftree[0]->paths, isis->sysid); |
1632 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1633 | } |
eb5d44eb | 1634 | #ifdef HAVE_IPV6 |
f390d2c7 | 1635 | if (area->ipv6_circuits > 0 && area->spftree6[0] |
1636 | && area->spftree6[0]->paths->count > 0) | |
1637 | { | |
1638 | vty_out (vty, "IS-IS paths to level-1 routers that speak IPv6%s", | |
1639 | VTY_NEWLINE); | |
3f045a08 JB |
1640 | isis_print_paths (vty, area->spftree6[0]->paths, isis->sysid); |
1641 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1642 | } |
eb5d44eb | 1643 | #endif /* HAVE_IPV6 */ |
3f045a08 | 1644 | vty_out (vty, "%s", VTY_NEWLINE); |
eb5d44eb | 1645 | } |
1646 | ||
eb5d44eb | 1647 | return CMD_SUCCESS; |
f390d2c7 | 1648 | } |
eb5d44eb | 1649 | |
1650 | DEFUN (show_isis_topology_l2, | |
1651 | show_isis_topology_l2_cmd, | |
1652 | "show isis topology level-2", | |
1653 | SHOW_STR | |
1654 | "IS-IS information\n" | |
1655 | "IS-IS paths to Intermediate Systems\n" | |
1656 | "Paths to all level-2 routers in the domain\n") | |
1657 | { | |
1658 | struct listnode *node; | |
1659 | struct isis_area *area; | |
f390d2c7 | 1660 | |
eb5d44eb | 1661 | if (!isis->area_list || isis->area_list->count == 0) |
1662 | return CMD_SUCCESS; | |
1663 | ||
1eb8ef25 | 1664 | for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area)) |
f390d2c7 | 1665 | { |
f390d2c7 | 1666 | vty_out (vty, "Area %s:%s", area->area_tag ? area->area_tag : "null", |
1667 | VTY_NEWLINE); | |
1668 | ||
1669 | if (area->ip_circuits > 0 && area->spftree[1] | |
1670 | && area->spftree[1]->paths->count > 0) | |
1671 | { | |
1672 | vty_out (vty, "IS-IS paths to level-2 routers that speak IP%s", | |
1673 | VTY_NEWLINE); | |
3f045a08 JB |
1674 | isis_print_paths (vty, area->spftree[1]->paths, isis->sysid); |
1675 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1676 | } |
eb5d44eb | 1677 | #ifdef HAVE_IPV6 |
f390d2c7 | 1678 | if (area->ipv6_circuits > 0 && area->spftree6[1] |
1679 | && area->spftree6[1]->paths->count > 0) | |
1680 | { | |
1681 | vty_out (vty, "IS-IS paths to level-2 routers that speak IPv6%s", | |
1682 | VTY_NEWLINE); | |
3f045a08 JB |
1683 | isis_print_paths (vty, area->spftree6[1]->paths, isis->sysid); |
1684 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1685 | } |
eb5d44eb | 1686 | #endif /* HAVE_IPV6 */ |
3f045a08 | 1687 | vty_out (vty, "%s", VTY_NEWLINE); |
eb5d44eb | 1688 | } |
1689 | ||
eb5d44eb | 1690 | return CMD_SUCCESS; |
f390d2c7 | 1691 | } |
eb5d44eb | 1692 | |
1693 | void | |
1694 | isis_spf_cmds_init () | |
1695 | { | |
1696 | install_element (VIEW_NODE, &show_isis_topology_cmd); | |
1697 | install_element (VIEW_NODE, &show_isis_topology_l1_cmd); | |
1698 | install_element (VIEW_NODE, &show_isis_topology_l2_cmd); | |
1699 | ||
1700 | install_element (ENABLE_NODE, &show_isis_topology_cmd); | |
1701 | install_element (ENABLE_NODE, &show_isis_topology_l1_cmd); | |
1702 | install_element (ENABLE_NODE, &show_isis_topology_l2_cmd); | |
1703 | } |