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