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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 * |
4690c7d7 | 157 | vid2string (struct isis_vertex *vertex, char * buff, int size) |
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 */ | |
4690c7d7 | 177 | prefix2str ((struct prefix *) &vertex->N.prefix, buff, size); |
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 | 191 | vertex = XCALLOC (MTYPE_ISIS_VERTEX, sizeof (struct isis_vertex)); |
eb5d44eb | 192 | |
3f045a08 JB |
193 | vertex->type = vtype; |
194 | switch (vtype) | |
195 | { | |
196 | case VTYPE_ES: | |
197 | case VTYPE_NONPSEUDO_IS: | |
198 | case VTYPE_NONPSEUDO_TE_IS: | |
199 | memcpy (vertex->N.id, (u_char *) id, ISIS_SYS_ID_LEN); | |
200 | break; | |
201 | case VTYPE_PSEUDO_IS: | |
202 | case VTYPE_PSEUDO_TE_IS: | |
203 | memcpy (vertex->N.id, (u_char *) id, ISIS_SYS_ID_LEN + 1); | |
204 | break; | |
205 | case VTYPE_IPREACH_INTERNAL: | |
206 | case VTYPE_IPREACH_EXTERNAL: | |
207 | case VTYPE_IPREACH_TE: | |
208 | #ifdef HAVE_IPV6 | |
209 | case VTYPE_IP6REACH_INTERNAL: | |
210 | case VTYPE_IP6REACH_EXTERNAL: | |
211 | #endif /* HAVE_IPV6 */ | |
212 | memcpy (&vertex->N.prefix, (struct prefix *) id, | |
213 | sizeof (struct prefix)); | |
214 | break; | |
215 | default: | |
216 | zlog_err ("WTF!"); | |
217 | } | |
218 | ||
219 | vertex->Adj_N = list_new (); | |
220 | vertex->parents = list_new (); | |
221 | vertex->children = list_new (); | |
222 | ||
223 | return vertex; | |
eb5d44eb | 224 | } |
225 | ||
92365889 | 226 | static void |
eb5d44eb | 227 | isis_vertex_del (struct isis_vertex *vertex) |
228 | { | |
eb5d44eb | 229 | list_delete (vertex->Adj_N); |
3f045a08 JB |
230 | vertex->Adj_N = NULL; |
231 | list_delete (vertex->parents); | |
232 | vertex->parents = NULL; | |
233 | list_delete (vertex->children); | |
234 | vertex->children = NULL; | |
eb5d44eb | 235 | |
3f045a08 | 236 | memset(vertex, 0, sizeof(struct isis_vertex)); |
eb5d44eb | 237 | XFREE (MTYPE_ISIS_VERTEX, vertex); |
f390d2c7 | 238 | |
eb5d44eb | 239 | return; |
240 | } | |
241 | ||
92365889 | 242 | static void |
3f045a08 JB |
243 | isis_vertex_adj_del (struct isis_vertex *vertex, struct isis_adjacency *adj) |
244 | { | |
245 | struct listnode *node, *nextnode; | |
246 | if (!vertex) | |
247 | return; | |
248 | for (node = listhead (vertex->Adj_N); node; node = nextnode) | |
249 | { | |
250 | nextnode = listnextnode(node); | |
251 | if (listgetdata(node) == adj) | |
252 | list_delete_node(vertex->Adj_N, node); | |
253 | } | |
254 | return; | |
255 | } | |
256 | ||
257 | struct isis_spftree * | |
258 | isis_spftree_new (struct isis_area *area) | |
259 | { | |
260 | struct isis_spftree *tree; | |
261 | ||
262 | tree = XCALLOC (MTYPE_ISIS_SPFTREE, sizeof (struct isis_spftree)); | |
263 | if (tree == NULL) | |
264 | { | |
265 | zlog_err ("ISIS-Spf: isis_spftree_new Out of memory!"); | |
266 | return NULL; | |
267 | } | |
268 | ||
269 | tree->tents = list_new (); | |
270 | tree->paths = list_new (); | |
271 | tree->area = area; | |
e38e0df0 SV |
272 | tree->last_run_timestamp = 0; |
273 | tree->last_run_duration = 0; | |
3f045a08 JB |
274 | tree->runcount = 0; |
275 | tree->pending = 0; | |
276 | return tree; | |
277 | } | |
278 | ||
279 | void | |
eb5d44eb | 280 | isis_spftree_del (struct isis_spftree *spftree) |
281 | { | |
3f045a08 JB |
282 | THREAD_TIMER_OFF (spftree->t_spf); |
283 | ||
f7c43dcb | 284 | spftree->tents->del = (void (*)(void *)) isis_vertex_del; |
eb5d44eb | 285 | list_delete (spftree->tents); |
3f045a08 | 286 | spftree->tents = NULL; |
f390d2c7 | 287 | |
f7c43dcb | 288 | spftree->paths->del = (void (*)(void *)) isis_vertex_del; |
eb5d44eb | 289 | list_delete (spftree->paths); |
3f045a08 | 290 | spftree->paths = NULL; |
eb5d44eb | 291 | |
292 | XFREE (MTYPE_ISIS_SPFTREE, spftree); | |
293 | ||
294 | return; | |
295 | } | |
3f045a08 JB |
296 | |
297 | void | |
298 | isis_spftree_adj_del (struct isis_spftree *spftree, struct isis_adjacency *adj) | |
299 | { | |
300 | struct listnode *node; | |
301 | if (!adj) | |
302 | return; | |
303 | for (node = listhead (spftree->tents); node; node = listnextnode (node)) | |
304 | isis_vertex_adj_del (listgetdata (node), adj); | |
305 | for (node = listhead (spftree->paths); node; node = listnextnode (node)) | |
306 | isis_vertex_adj_del (listgetdata (node), adj); | |
307 | return; | |
308 | } | |
eb5d44eb | 309 | |
f390d2c7 | 310 | void |
eb5d44eb | 311 | spftree_area_init (struct isis_area *area) |
312 | { | |
3f045a08 JB |
313 | if (area->is_type & IS_LEVEL_1) |
314 | { | |
315 | if (area->spftree[0] == NULL) | |
316 | area->spftree[0] = isis_spftree_new (area); | |
eb5d44eb | 317 | #ifdef HAVE_IPV6 |
3f045a08 JB |
318 | if (area->spftree6[0] == NULL) |
319 | area->spftree6[0] = isis_spftree_new (area); | |
eb5d44eb | 320 | #endif |
3f045a08 | 321 | } |
eb5d44eb | 322 | |
3f045a08 JB |
323 | if (area->is_type & IS_LEVEL_2) |
324 | { | |
325 | if (area->spftree[1] == NULL) | |
326 | area->spftree[1] = isis_spftree_new (area); | |
eb5d44eb | 327 | #ifdef HAVE_IPV6 |
3f045a08 JB |
328 | if (area->spftree6[1] == NULL) |
329 | area->spftree6[1] = isis_spftree_new (area); | |
eb5d44eb | 330 | #endif |
3f045a08 | 331 | } |
eb5d44eb | 332 | |
333 | return; | |
334 | } | |
335 | ||
3f045a08 JB |
336 | void |
337 | spftree_area_del (struct isis_area *area) | |
eb5d44eb | 338 | { |
3f045a08 JB |
339 | if (area->is_type & IS_LEVEL_1) |
340 | { | |
341 | if (area->spftree[0] != NULL) | |
f390d2c7 | 342 | { |
3f045a08 JB |
343 | isis_spftree_del (area->spftree[0]); |
344 | area->spftree[0] = NULL; | |
345 | } | |
346 | #ifdef HAVE_IPV6 | |
347 | if (area->spftree6[0]) | |
348 | { | |
349 | isis_spftree_del (area->spftree6[0]); | |
350 | area->spftree6[0] = NULL; | |
f390d2c7 | 351 | } |
3f045a08 JB |
352 | #endif |
353 | } | |
f390d2c7 | 354 | |
3f045a08 JB |
355 | if (area->is_type & IS_LEVEL_2) |
356 | { | |
357 | if (area->spftree[1] != NULL) | |
f390d2c7 | 358 | { |
3f045a08 JB |
359 | isis_spftree_del (area->spftree[1]); |
360 | area->spftree[1] = NULL; | |
361 | } | |
eb5d44eb | 362 | #ifdef HAVE_IPV6 |
de543de3 | 363 | if (area->spftree6[1] != NULL) |
3f045a08 JB |
364 | { |
365 | isis_spftree_del (area->spftree6[1]); | |
366 | area->spftree6[1] = NULL; | |
f390d2c7 | 367 | } |
3f045a08 JB |
368 | #endif |
369 | } | |
eb5d44eb | 370 | |
3f045a08 JB |
371 | return; |
372 | } | |
f390d2c7 | 373 | |
3f045a08 JB |
374 | void |
375 | spftree_area_adj_del (struct isis_area *area, struct isis_adjacency *adj) | |
376 | { | |
377 | if (area->is_type & IS_LEVEL_1) | |
378 | { | |
379 | if (area->spftree[0] != NULL) | |
380 | isis_spftree_adj_del (area->spftree[0], adj); | |
381 | #ifdef HAVE_IPV6 | |
382 | if (area->spftree6[0] != NULL) | |
383 | isis_spftree_adj_del (area->spftree6[0], adj); | |
384 | #endif | |
385 | } | |
386 | ||
387 | if (area->is_type & IS_LEVEL_2) | |
388 | { | |
389 | if (area->spftree[1] != NULL) | |
390 | isis_spftree_adj_del (area->spftree[1], adj); | |
391 | #ifdef HAVE_IPV6 | |
392 | if (area->spftree6[1] != NULL) | |
393 | isis_spftree_adj_del (area->spftree6[1], adj); | |
394 | #endif | |
395 | } | |
396 | ||
397 | return; | |
398 | } | |
399 | ||
400 | /* | |
401 | * Find the system LSP: returns the LSP in our LSP database | |
402 | * associated with the given system ID. | |
403 | */ | |
404 | static struct isis_lsp * | |
405 | isis_root_system_lsp (struct isis_area *area, int level, u_char *sysid) | |
406 | { | |
e38e0df0 | 407 | struct isis_lsp *lsp; |
3f045a08 JB |
408 | u_char lspid[ISIS_SYS_ID_LEN + 2]; |
409 | ||
410 | memcpy (lspid, sysid, ISIS_SYS_ID_LEN); | |
411 | LSP_PSEUDO_ID (lspid) = 0; | |
412 | LSP_FRAGMENT (lspid) = 0; | |
e38e0df0 SV |
413 | lsp = lsp_search (lspid, area->lspdb[level - 1]); |
414 | if (lsp && lsp->lsp_header->rem_lifetime != 0) | |
415 | return lsp; | |
416 | return NULL; | |
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 |
4690c7d7 | 428 | char buff[PREFIX2STR_BUFFER]; |
eb5d44eb | 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", |
4690c7d7 | 444 | vtype2string (vertex->type), vid2string (vertex, buff, sizeof (buff)), |
529d65b3 | 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 |
4690c7d7 | 507 | char buff[PREFIX2STR_BUFFER]; |
eb5d44eb | 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), | |
4690c7d7 | 532 | vtype2string (vertex->type), vid2string (vertex, buff, sizeof (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 | { | |
a8fd8202 | 548 | listnode_add_before (spftree->tents, node, vertex); |
f390d2c7 | 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 */ | |
a8fd8202 | 554 | listnode_add_before (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 | |
4690c7d7 | 618 | char buff[PREFIX2STR_BUFFER]; |
eb5d44eb | 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), | |
4690c7d7 | 643 | vtype2string (vtype), vid2string (vertex, buff, sizeof (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), | |
4690c7d7 | 657 | vtype2string (vtype), vid2string (vertex, buff, sizeof (buff)), dist, |
3f045a08 JB |
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 | { | |
948b6bef DL |
811 | assert ((te_ipv4_reach->control & 0x3F) <= IPV4_MAX_BITLEN); |
812 | ||
3f045a08 JB |
813 | dist = cost + ntohl (te_ipv4_reach->te_metric); |
814 | vtype = VTYPE_IPREACH_TE; | |
815 | prefix.u.prefix4 = newprefix2inaddr (&te_ipv4_reach->prefix_start, | |
816 | te_ipv4_reach->control); | |
817 | prefix.prefixlen = (te_ipv4_reach->control & 0x3F); | |
818 | apply_mask (&prefix); | |
819 | process_N (spftree, vtype, (void *) &prefix, dist, depth + 1, | |
820 | family, parent); | |
821 | } | |
822 | } | |
eb5d44eb | 823 | #ifdef HAVE_IPV6 |
3f045a08 JB |
824 | if (family == AF_INET6 && lsp->tlv_data.ipv6_reachs) |
825 | { | |
826 | prefix.family = AF_INET6; | |
827 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.ipv6_reachs, node, ip6reach)) | |
828 | { | |
948b6bef DL |
829 | assert (ip6reach->prefix_len <= IPV6_MAX_BITLEN); |
830 | ||
e1a555b6 | 831 | dist = cost + ntohl(ip6reach->metric); |
3f045a08 JB |
832 | vtype = (ip6reach->control_info & CTRL_INFO_DISTRIBUTION) ? |
833 | VTYPE_IP6REACH_EXTERNAL : VTYPE_IP6REACH_INTERNAL; | |
834 | prefix.prefixlen = ip6reach->prefix_len; | |
835 | memcpy (&prefix.u.prefix6.s6_addr, ip6reach->prefix, | |
836 | PSIZE (ip6reach->prefix_len)); | |
837 | apply_mask (&prefix); | |
838 | process_N (spftree, vtype, (void *) &prefix, dist, depth + 1, | |
839 | family, parent); | |
f390d2c7 | 840 | } |
3f045a08 JB |
841 | } |
842 | #endif /* HAVE_IPV6 */ | |
f390d2c7 | 843 | |
eb5d44eb | 844 | if (fragnode == NULL) |
845 | fragnode = listhead (lsp->lspu.frags); | |
f390d2c7 | 846 | else |
1eb8ef25 | 847 | fragnode = listnextnode (fragnode); |
eb5d44eb | 848 | |
f390d2c7 | 849 | if (fragnode) |
850 | { | |
1eb8ef25 | 851 | lsp = listgetdata (fragnode); |
f390d2c7 | 852 | goto lspfragloop; |
853 | } | |
854 | ||
eb5d44eb | 855 | return ISIS_OK; |
856 | } | |
857 | ||
92365889 | 858 | static int |
f390d2c7 | 859 | isis_spf_process_pseudo_lsp (struct isis_spftree *spftree, |
3f045a08 JB |
860 | struct isis_lsp *lsp, uint32_t cost, |
861 | uint16_t depth, int family, | |
862 | u_char *root_sysid, | |
863 | struct isis_vertex *parent) | |
eb5d44eb | 864 | { |
3fdb2dd9 | 865 | struct listnode *node, *fragnode = NULL; |
eb5d44eb | 866 | struct is_neigh *is_neigh; |
82a8428c | 867 | struct te_is_neigh *te_is_neigh; |
eb5d44eb | 868 | enum vertextype vtype; |
3f045a08 | 869 | uint32_t dist; |
f390d2c7 | 870 | |
871 | pseudofragloop: | |
872 | ||
873 | if (lsp->lsp_header->seq_num == 0) | |
874 | { | |
875 | zlog_warn ("isis_spf_process_pseudo_lsp(): lsp with 0 seq_num" | |
876 | " - do not process"); | |
877 | return ISIS_WARNING; | |
eb5d44eb | 878 | } |
f390d2c7 | 879 | |
3f045a08 JB |
880 | #ifdef EXTREME_DEBUG |
881 | zlog_debug ("ISIS-Spf: process_pseudo_lsp %s", | |
882 | print_sys_hostname(lsp->lsp_header->lsp_id)); | |
883 | #endif /* EXTREME_DEBUG */ | |
884 | ||
885 | /* RFC3787 section 4 SHOULD ignore overload bit in pseudo LSPs */ | |
886 | ||
82a8428c | 887 | if (lsp->tlv_data.is_neighs) |
3fdb2dd9 | 888 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.is_neighs, node, is_neigh)) |
82a8428c | 889 | { |
82a8428c | 890 | /* Two way connectivity */ |
3f045a08 | 891 | if (!memcmp (is_neigh->neigh_id, root_sysid, ISIS_SYS_ID_LEN)) |
82a8428c | 892 | continue; |
3f045a08 JB |
893 | dist = cost + is_neigh->metrics.metric_default; |
894 | vtype = LSP_PSEUDO_ID (is_neigh->neigh_id) ? VTYPE_PSEUDO_IS | |
895 | : VTYPE_NONPSEUDO_IS; | |
896 | process_N (spftree, vtype, (void *) is_neigh->neigh_id, dist, | |
897 | depth + 1, family, parent); | |
82a8428c | 898 | } |
899 | if (lsp->tlv_data.te_is_neighs) | |
3fdb2dd9 | 900 | for (ALL_LIST_ELEMENTS_RO (lsp->tlv_data.te_is_neighs, node, te_is_neigh)) |
82a8428c | 901 | { |
82a8428c | 902 | /* Two way connectivity */ |
3f045a08 | 903 | if (!memcmp (te_is_neigh->neigh_id, root_sysid, ISIS_SYS_ID_LEN)) |
82a8428c | 904 | continue; |
3f045a08 JB |
905 | dist = cost + GET_TE_METRIC(te_is_neigh); |
906 | vtype = LSP_PSEUDO_ID (te_is_neigh->neigh_id) ? VTYPE_PSEUDO_TE_IS | |
907 | : VTYPE_NONPSEUDO_TE_IS; | |
908 | process_N (spftree, vtype, (void *) te_is_neigh->neigh_id, dist, | |
909 | depth + 1, family, parent); | |
82a8428c | 910 | } |
f390d2c7 | 911 | |
eb5d44eb | 912 | if (fragnode == NULL) |
913 | fragnode = listhead (lsp->lspu.frags); | |
f390d2c7 | 914 | else |
1eb8ef25 | 915 | fragnode = listnextnode (fragnode); |
eb5d44eb | 916 | |
f390d2c7 | 917 | if (fragnode) |
918 | { | |
1eb8ef25 | 919 | lsp = listgetdata (fragnode); |
f390d2c7 | 920 | goto pseudofragloop; |
921 | } | |
eb5d44eb | 922 | |
eb5d44eb | 923 | return ISIS_OK; |
924 | } | |
f390d2c7 | 925 | |
92365889 | 926 | static int |
3f045a08 JB |
927 | isis_spf_preload_tent (struct isis_spftree *spftree, int level, |
928 | int family, u_char *root_sysid, | |
929 | struct isis_vertex *parent) | |
eb5d44eb | 930 | { |
eb5d44eb | 931 | struct isis_circuit *circuit; |
3fdb2dd9 | 932 | struct listnode *cnode, *anode, *ipnode; |
eb5d44eb | 933 | struct isis_adjacency *adj; |
934 | struct isis_lsp *lsp; | |
935 | struct list *adj_list; | |
936 | struct list *adjdb; | |
937 | struct prefix_ipv4 *ipv4; | |
938 | struct prefix prefix; | |
939 | int retval = ISIS_OK; | |
940 | u_char lsp_id[ISIS_SYS_ID_LEN + 2]; | |
3f045a08 | 941 | static u_char null_lsp_id[ISIS_SYS_ID_LEN + 2]; |
eb5d44eb | 942 | #ifdef HAVE_IPV6 |
943 | struct prefix_ipv6 *ipv6; | |
944 | #endif /* HAVE_IPV6 */ | |
f390d2c7 | 945 | |
3f045a08 | 946 | for (ALL_LIST_ELEMENTS_RO (spftree->area->circuit_list, cnode, circuit)) |
f390d2c7 | 947 | { |
f390d2c7 | 948 | if (circuit->state != C_STATE_UP) |
949 | continue; | |
3f045a08 | 950 | if (!(circuit->is_type & level)) |
f390d2c7 | 951 | continue; |
952 | if (family == AF_INET && !circuit->ip_router) | |
953 | continue; | |
eb5d44eb | 954 | #ifdef HAVE_IPV6 |
f390d2c7 | 955 | if (family == AF_INET6 && !circuit->ipv6_router) |
956 | continue; | |
eb5d44eb | 957 | #endif /* HAVE_IPV6 */ |
f390d2c7 | 958 | /* |
959 | * Add IP(v6) addresses of this circuit | |
960 | */ | |
961 | if (family == AF_INET) | |
962 | { | |
963 | prefix.family = AF_INET; | |
3fdb2dd9 | 964 | for (ALL_LIST_ELEMENTS_RO (circuit->ip_addrs, ipnode, ipv4)) |
f390d2c7 | 965 | { |
f390d2c7 | 966 | prefix.u.prefix4 = ipv4->prefix; |
967 | prefix.prefixlen = ipv4->prefixlen; | |
3f045a08 | 968 | apply_mask (&prefix); |
f390d2c7 | 969 | isis_spf_add_local (spftree, VTYPE_IPREACH_INTERNAL, &prefix, |
3f045a08 | 970 | NULL, 0, family, parent); |
f390d2c7 | 971 | } |
972 | } | |
eb5d44eb | 973 | #ifdef HAVE_IPV6 |
f390d2c7 | 974 | if (family == AF_INET6) |
975 | { | |
976 | prefix.family = AF_INET6; | |
3fdb2dd9 | 977 | for (ALL_LIST_ELEMENTS_RO (circuit->ipv6_non_link, ipnode, ipv6)) |
f390d2c7 | 978 | { |
f390d2c7 | 979 | prefix.prefixlen = ipv6->prefixlen; |
980 | prefix.u.prefix6 = ipv6->prefix; | |
3f045a08 | 981 | apply_mask (&prefix); |
f390d2c7 | 982 | isis_spf_add_local (spftree, VTYPE_IP6REACH_INTERNAL, |
3f045a08 | 983 | &prefix, NULL, 0, family, parent); |
f390d2c7 | 984 | } |
985 | } | |
eb5d44eb | 986 | #endif /* HAVE_IPV6 */ |
f390d2c7 | 987 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) |
988 | { | |
989 | /* | |
990 | * Add the adjacencies | |
991 | */ | |
992 | adj_list = list_new (); | |
993 | adjdb = circuit->u.bc.adjdb[level - 1]; | |
994 | isis_adj_build_up_list (adjdb, adj_list); | |
995 | if (listcount (adj_list) == 0) | |
996 | { | |
997 | list_delete (adj_list); | |
c89c05dd | 998 | if (isis->debugs & DEBUG_SPF_EVENTS) |
999 | zlog_debug ("ISIS-Spf: no L%d adjacencies on circuit %s", | |
1000 | level, circuit->interface->name); | |
f390d2c7 | 1001 | continue; |
1002 | } | |
3f045a08 | 1003 | for (ALL_LIST_ELEMENTS_RO (adj_list, anode, adj)) |
f390d2c7 | 1004 | { |
f390d2c7 | 1005 | if (!speaks (&adj->nlpids, family)) |
f390d2c7 | 1006 | continue; |
f390d2c7 | 1007 | switch (adj->sys_type) |
1008 | { | |
1009 | case ISIS_SYSTYPE_ES: | |
1010 | isis_spf_add_local (spftree, VTYPE_ES, adj->sysid, adj, | |
3f045a08 JB |
1011 | circuit->te_metric[level - 1], |
1012 | family, parent); | |
f390d2c7 | 1013 | break; |
1014 | case ISIS_SYSTYPE_IS: | |
1015 | case ISIS_SYSTYPE_L1_IS: | |
1016 | case ISIS_SYSTYPE_L2_IS: | |
3f045a08 JB |
1017 | isis_spf_add_local (spftree, |
1018 | spftree->area->oldmetric ? | |
1019 | VTYPE_NONPSEUDO_IS : | |
1020 | VTYPE_NONPSEUDO_TE_IS, | |
1021 | adj->sysid, adj, | |
1022 | circuit->te_metric[level - 1], | |
1023 | family, parent); | |
f390d2c7 | 1024 | memcpy (lsp_id, adj->sysid, ISIS_SYS_ID_LEN); |
1025 | LSP_PSEUDO_ID (lsp_id) = 0; | |
1026 | LSP_FRAGMENT (lsp_id) = 0; | |
3f045a08 | 1027 | lsp = lsp_search (lsp_id, spftree->area->lspdb[level - 1]); |
e38e0df0 | 1028 | if (lsp == NULL || lsp->lsp_header->rem_lifetime == 0) |
3f045a08 JB |
1029 | zlog_warn ("ISIS-Spf: No LSP %s found for IS adjacency " |
1030 | "L%d on %s (ID %u)", | |
1031 | rawlspid_print (lsp_id), level, | |
1032 | circuit->interface->name, circuit->circuit_id); | |
f390d2c7 | 1033 | break; |
1034 | case ISIS_SYSTYPE_UNKNOWN: | |
1035 | default: | |
1036 | zlog_warn ("isis_spf_preload_tent unknow adj type"); | |
1037 | } | |
f390d2c7 | 1038 | } |
1039 | list_delete (adj_list); | |
1040 | /* | |
1041 | * Add the pseudonode | |
1042 | */ | |
1043 | if (level == 1) | |
1044 | memcpy (lsp_id, circuit->u.bc.l1_desig_is, ISIS_SYS_ID_LEN + 1); | |
1045 | else | |
1046 | memcpy (lsp_id, circuit->u.bc.l2_desig_is, ISIS_SYS_ID_LEN + 1); | |
3f045a08 JB |
1047 | /* can happen during DR reboot */ |
1048 | if (memcmp (lsp_id, null_lsp_id, ISIS_SYS_ID_LEN + 1) == 0) | |
1049 | { | |
1050 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1051 | zlog_debug ("ISIS-Spf: No L%d DR on %s (ID %d)", | |
1052 | level, circuit->interface->name, circuit->circuit_id); | |
1053 | continue; | |
1054 | } | |
f390d2c7 | 1055 | adj = isis_adj_lookup (lsp_id, adjdb); |
1056 | /* if no adj, we are the dis or error */ | |
1057 | if (!adj && !circuit->u.bc.is_dr[level - 1]) | |
1058 | { | |
3f045a08 JB |
1059 | zlog_warn ("ISIS-Spf: No adjacency found from root " |
1060 | "to L%d DR %s on %s (ID %d)", | |
1061 | level, rawlspid_print (lsp_id), | |
1062 | circuit->interface->name, circuit->circuit_id); | |
1063 | continue; | |
f390d2c7 | 1064 | } |
3f045a08 | 1065 | lsp = lsp_search (lsp_id, spftree->area->lspdb[level - 1]); |
f390d2c7 | 1066 | if (lsp == NULL || lsp->lsp_header->rem_lifetime == 0) |
1067 | { | |
3f045a08 JB |
1068 | zlog_warn ("ISIS-Spf: No lsp (%p) found from root " |
1069 | "to L%d DR %s on %s (ID %d)", | |
6c4f4e6e DL |
1070 | (void *)lsp, level, rawlspid_print (lsp_id), |
1071 | circuit->interface->name, circuit->circuit_id); | |
3f045a08 | 1072 | continue; |
f390d2c7 | 1073 | } |
3f045a08 JB |
1074 | isis_spf_process_pseudo_lsp (spftree, lsp, |
1075 | circuit->te_metric[level - 1], 0, | |
1076 | family, root_sysid, parent); | |
f390d2c7 | 1077 | } |
1078 | else if (circuit->circ_type == CIRCUIT_T_P2P) | |
1079 | { | |
1080 | adj = circuit->u.p2p.neighbor; | |
1081 | if (!adj) | |
1082 | continue; | |
1083 | switch (adj->sys_type) | |
1084 | { | |
1085 | case ISIS_SYSTYPE_ES: | |
1086 | isis_spf_add_local (spftree, VTYPE_ES, adj->sysid, adj, | |
3f045a08 JB |
1087 | circuit->te_metric[level - 1], family, |
1088 | parent); | |
f390d2c7 | 1089 | break; |
1090 | case ISIS_SYSTYPE_IS: | |
1091 | case ISIS_SYSTYPE_L1_IS: | |
1092 | case ISIS_SYSTYPE_L2_IS: | |
1093 | if (speaks (&adj->nlpids, family)) | |
3f045a08 JB |
1094 | isis_spf_add_local (spftree, |
1095 | spftree->area->oldmetric ? | |
1096 | VTYPE_NONPSEUDO_IS : | |
1097 | VTYPE_NONPSEUDO_TE_IS, | |
1098 | adj->sysid, | |
82a8428c | 1099 | adj, circuit->te_metric[level - 1], |
3f045a08 | 1100 | family, parent); |
f390d2c7 | 1101 | break; |
1102 | case ISIS_SYSTYPE_UNKNOWN: | |
1103 | default: | |
3f045a08 | 1104 | zlog_warn ("isis_spf_preload_tent unknown adj type"); |
f390d2c7 | 1105 | break; |
1106 | } | |
1107 | } | |
3f045a08 JB |
1108 | else if (circuit->circ_type == CIRCUIT_T_LOOPBACK) |
1109 | { | |
1110 | continue; | |
1111 | } | |
eb5d44eb | 1112 | else |
f390d2c7 | 1113 | { |
1114 | zlog_warn ("isis_spf_preload_tent unsupported media"); | |
1115 | retval = ISIS_WARNING; | |
1116 | } | |
eb5d44eb | 1117 | } |
eb5d44eb | 1118 | |
1119 | return retval; | |
1120 | } | |
1121 | ||
1122 | /* | |
1123 | * The parent(s) for vertex is set when added to TENT list | |
1124 | * now we just put the child pointer(s) in place | |
1125 | */ | |
92365889 | 1126 | static void |
eb5d44eb | 1127 | add_to_paths (struct isis_spftree *spftree, struct isis_vertex *vertex, |
3f045a08 | 1128 | int level) |
eb5d44eb | 1129 | { |
4690c7d7 | 1130 | char buff[PREFIX2STR_BUFFER]; |
3f045a08 JB |
1131 | |
1132 | if (isis_find_vertex (spftree->paths, vertex->N.id, vertex->type)) | |
1133 | return; | |
eb5d44eb | 1134 | listnode_add (spftree->paths, vertex); |
1135 | ||
f390d2c7 | 1136 | #ifdef EXTREME_DEBUG |
3f045a08 JB |
1137 | zlog_debug ("ISIS-Spf: added %s %s %s depth %d dist %d to PATHS", |
1138 | print_sys_hostname (vertex->N.id), | |
4690c7d7 | 1139 | vtype2string (vertex->type), vid2string (vertex, buff, sizeof (buff)), |
529d65b3 | 1140 | vertex->depth, vertex->d_N); |
f390d2c7 | 1141 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 1142 | |
f390d2c7 | 1143 | if (vertex->type > VTYPE_ES) |
1144 | { | |
1145 | if (listcount (vertex->Adj_N) > 0) | |
fac1f7cc | 1146 | isis_route_create ((struct prefix *) &vertex->N.prefix, vertex->d_N, |
3f045a08 | 1147 | vertex->depth, vertex->Adj_N, spftree->area, level); |
f390d2c7 | 1148 | else if (isis->debugs & DEBUG_SPF_EVENTS) |
3f045a08 | 1149 | zlog_debug ("ISIS-Spf: no adjacencies do not install route for " |
4690c7d7 | 1150 | "%s depth %d dist %d", vid2string (vertex, buff, sizeof (buff)), |
3f045a08 | 1151 | vertex->depth, vertex->d_N); |
f390d2c7 | 1152 | } |
1153 | ||
eb5d44eb | 1154 | return; |
1155 | } | |
1156 | ||
92365889 | 1157 | static void |
eb5d44eb | 1158 | init_spt (struct isis_spftree *spftree) |
1159 | { | |
f7c43dcb | 1160 | spftree->tents->del = spftree->paths->del = (void (*)(void *)) isis_vertex_del; |
eb5d44eb | 1161 | list_delete_all_node (spftree->tents); |
1162 | list_delete_all_node (spftree->paths); | |
1163 | spftree->tents->del = spftree->paths->del = NULL; | |
eb5d44eb | 1164 | return; |
1165 | } | |
1166 | ||
92365889 | 1167 | static int |
3f045a08 | 1168 | isis_run_spf (struct isis_area *area, int level, int family, u_char *sysid) |
eb5d44eb | 1169 | { |
1170 | int retval = ISIS_OK; | |
1171 | struct listnode *node; | |
1172 | struct isis_vertex *vertex; | |
3f045a08 | 1173 | struct isis_vertex *root_vertex; |
f390d2c7 | 1174 | struct isis_spftree *spftree = NULL; |
eb5d44eb | 1175 | u_char lsp_id[ISIS_SYS_ID_LEN + 2]; |
1176 | struct isis_lsp *lsp; | |
fac1f7cc | 1177 | struct route_table *table = NULL; |
43057bf2 | 1178 | struct timeval time_now; |
e38e0df0 SV |
1179 | unsigned long long start_time, end_time; |
1180 | ||
1181 | /* Get time that can't roll backwards. */ | |
43057bf2 | 1182 | quagga_gettime(QUAGGA_CLK_MONOTONIC, &time_now); |
e38e0df0 | 1183 | start_time = time_now.tv_sec; |
43057bf2 | 1184 | start_time = (start_time * 1000000) + time_now.tv_usec; |
f390d2c7 | 1185 | |
eb5d44eb | 1186 | if (family == AF_INET) |
1187 | spftree = area->spftree[level - 1]; | |
1188 | #ifdef HAVE_IPV6 | |
1189 | else if (family == AF_INET6) | |
1190 | spftree = area->spftree6[level - 1]; | |
1191 | #endif | |
eb5d44eb | 1192 | assert (spftree); |
3f045a08 | 1193 | assert (sysid); |
eb5d44eb | 1194 | |
fac1f7cc | 1195 | /* Make all routes in current route table inactive. */ |
1196 | if (family == AF_INET) | |
1197 | table = area->route_table[level - 1]; | |
41b36e90 | 1198 | #ifdef HAVE_IPV6 |
fac1f7cc | 1199 | else if (family == AF_INET6) |
1200 | table = area->route_table6[level - 1]; | |
41b36e90 | 1201 | #endif |
fac1f7cc | 1202 | |
3f045a08 | 1203 | isis_route_invalidate_table (area, table); |
fac1f7cc | 1204 | |
eb5d44eb | 1205 | /* |
1206 | * C.2.5 Step 0 | |
1207 | */ | |
1208 | init_spt (spftree); | |
1209 | /* a) */ | |
3f045a08 | 1210 | root_vertex = isis_spf_add_root (spftree, level, sysid); |
eb5d44eb | 1211 | /* b) */ |
3f045a08 JB |
1212 | retval = isis_spf_preload_tent (spftree, level, family, sysid, root_vertex); |
1213 | if (retval != ISIS_OK) | |
1214 | { | |
1215 | zlog_warn ("ISIS-Spf: failed to load TENT SPF-root:%s", print_sys_hostname(sysid)); | |
1216 | goto out; | |
1217 | } | |
f390d2c7 | 1218 | |
eb5d44eb | 1219 | /* |
1220 | * C.2.7 Step 2 | |
1221 | */ | |
f390d2c7 | 1222 | if (listcount (spftree->tents) == 0) |
1223 | { | |
3f045a08 | 1224 | zlog_warn ("ISIS-Spf: TENT is empty SPF-root:%s", print_sys_hostname(sysid)); |
13fb40ac | 1225 | goto out; |
f390d2c7 | 1226 | } |
1227 | ||
1228 | while (listcount (spftree->tents) > 0) | |
1229 | { | |
1230 | node = listhead (spftree->tents); | |
1eb8ef25 | 1231 | vertex = listgetdata (node); |
3f045a08 JB |
1232 | |
1233 | #ifdef EXTREME_DEBUG | |
1234 | zlog_debug ("ISIS-Spf: get TENT node %s %s depth %d dist %d to PATHS", | |
1235 | print_sys_hostname (vertex->N.id), | |
1236 | vtype2string (vertex->type), vertex->depth, vertex->d_N); | |
1237 | #endif /* EXTREME_DEBUG */ | |
1238 | ||
1239 | /* Remove from tent list and add to paths list */ | |
f390d2c7 | 1240 | list_delete_node (spftree->tents, node); |
3f045a08 JB |
1241 | add_to_paths (spftree, vertex, level); |
1242 | switch (vertex->type) | |
1243 | { | |
1244 | case VTYPE_PSEUDO_IS: | |
1245 | case VTYPE_NONPSEUDO_IS: | |
1246 | case VTYPE_PSEUDO_TE_IS: | |
1247 | case VTYPE_NONPSEUDO_TE_IS: | |
f390d2c7 | 1248 | memcpy (lsp_id, vertex->N.id, ISIS_SYS_ID_LEN + 1); |
1249 | LSP_FRAGMENT (lsp_id) = 0; | |
1250 | lsp = lsp_search (lsp_id, area->lspdb[level - 1]); | |
e38e0df0 | 1251 | if (lsp && lsp->lsp_header->rem_lifetime != 0) |
f390d2c7 | 1252 | { |
1253 | if (LSP_PSEUDO_ID (lsp_id)) | |
1254 | { | |
1255 | isis_spf_process_pseudo_lsp (spftree, lsp, vertex->d_N, | |
3f045a08 JB |
1256 | vertex->depth, family, sysid, |
1257 | vertex); | |
f390d2c7 | 1258 | } |
1259 | else | |
1260 | { | |
1261 | isis_spf_process_lsp (spftree, lsp, vertex->d_N, | |
3f045a08 | 1262 | vertex->depth, family, sysid, vertex); |
f390d2c7 | 1263 | } |
1264 | } | |
1265 | else | |
1266 | { | |
1267 | zlog_warn ("ISIS-Spf: No LSP found for %s", | |
1268 | rawlspid_print (lsp_id)); | |
1269 | } | |
3f045a08 JB |
1270 | break; |
1271 | default:; | |
eb5d44eb | 1272 | } |
eb5d44eb | 1273 | } |
f390d2c7 | 1274 | |
13fb40ac | 1275 | out: |
3f045a08 | 1276 | isis_route_validate (area); |
eb5d44eb | 1277 | spftree->pending = 0; |
e38e0df0 SV |
1278 | spftree->runcount++; |
1279 | spftree->last_run_timestamp = time (NULL); | |
43057bf2 | 1280 | quagga_gettime(QUAGGA_CLK_MONOTONIC, &time_now); |
e38e0df0 | 1281 | end_time = time_now.tv_sec; |
43057bf2 | 1282 | end_time = (end_time * 1000000) + time_now.tv_usec; |
e38e0df0 SV |
1283 | spftree->last_run_duration = end_time - start_time; |
1284 | ||
f390d2c7 | 1285 | |
eb5d44eb | 1286 | return retval; |
1287 | } | |
1288 | ||
1289 | int | |
1290 | isis_run_spf_l1 (struct thread *thread) | |
1291 | { | |
1292 | struct isis_area *area; | |
1293 | int retval = ISIS_OK; | |
1294 | ||
f390d2c7 | 1295 | area = THREAD_ARG (thread); |
eb5d44eb | 1296 | assert (area); |
1297 | ||
12a5cae7 | 1298 | area->spftree[0]->t_spf = NULL; |
3f045a08 | 1299 | area->spftree[0]->pending = 0; |
12a5cae7 | 1300 | |
f390d2c7 | 1301 | if (!(area->is_type & IS_LEVEL_1)) |
1302 | { | |
1303 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
12a5cae7 | 1304 | zlog_warn ("ISIS-SPF (%s) area does not share level", |
1305 | area->area_tag); | |
f390d2c7 | 1306 | return ISIS_WARNING; |
1307 | } | |
1308 | ||
1309 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
529d65b3 | 1310 | zlog_debug ("ISIS-Spf (%s) L1 SPF needed, periodic SPF", area->area_tag); |
eb5d44eb | 1311 | |
eb5d44eb | 1312 | if (area->ip_circuits) |
3f045a08 | 1313 | retval = isis_run_spf (area, 1, AF_INET, isis->sysid); |
12a5cae7 | 1314 | |
eb5d44eb | 1315 | return retval; |
1316 | } | |
1317 | ||
1318 | int | |
1319 | isis_run_spf_l2 (struct thread *thread) | |
1320 | { | |
1321 | struct isis_area *area; | |
1322 | int retval = ISIS_OK; | |
1323 | ||
f390d2c7 | 1324 | area = THREAD_ARG (thread); |
eb5d44eb | 1325 | assert (area); |
f390d2c7 | 1326 | |
12a5cae7 | 1327 | area->spftree[1]->t_spf = NULL; |
3f045a08 | 1328 | area->spftree[1]->pending = 0; |
12a5cae7 | 1329 | |
f390d2c7 | 1330 | if (!(area->is_type & IS_LEVEL_2)) |
1331 | { | |
1332 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
12a5cae7 | 1333 | zlog_warn ("ISIS-SPF (%s) area does not share level", area->area_tag); |
f390d2c7 | 1334 | return ISIS_WARNING; |
1335 | } | |
1336 | ||
1337 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
529d65b3 | 1338 | zlog_debug ("ISIS-Spf (%s) L2 SPF needed, periodic SPF", area->area_tag); |
eb5d44eb | 1339 | |
1340 | if (area->ip_circuits) | |
3f045a08 | 1341 | retval = isis_run_spf (area, 2, AF_INET, isis->sysid); |
eb5d44eb | 1342 | |
1343 | return retval; | |
1344 | } | |
1345 | ||
f390d2c7 | 1346 | int |
eb5d44eb | 1347 | isis_spf_schedule (struct isis_area *area, int level) |
1348 | { | |
eb5d44eb | 1349 | struct isis_spftree *spftree = area->spftree[level - 1]; |
3f045a08 | 1350 | time_t now = time (NULL); |
e38e0df0 | 1351 | int diff = now - spftree->last_run_timestamp; |
eb5d44eb | 1352 | |
3f045a08 JB |
1353 | assert (diff >= 0); |
1354 | assert (area->is_type & level); | |
eb5d44eb | 1355 | |
3f045a08 JB |
1356 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1357 | zlog_debug ("ISIS-Spf (%s) L%d SPF schedule called, lastrun %d sec ago", | |
1358 | area->area_tag, level, diff); | |
f390d2c7 | 1359 | |
3f045a08 JB |
1360 | if (spftree->pending) |
1361 | return ISIS_OK; | |
12a5cae7 | 1362 | |
1363 | THREAD_TIMER_OFF (spftree->t_spf); | |
f390d2c7 | 1364 | |
e38e0df0 SV |
1365 | /* wait configured min_spf_interval before doing the SPF */ |
1366 | if (diff >= area->min_spf_interval[level-1]) | |
3f045a08 | 1367 | return isis_run_spf (area, level, AF_INET, isis->sysid); |
f390d2c7 | 1368 | |
3f045a08 JB |
1369 | if (level == 1) |
1370 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf_l1, area, | |
e38e0df0 | 1371 | area->min_spf_interval[0] - diff); |
f390d2c7 | 1372 | else |
3f045a08 | 1373 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf_l2, area, |
e38e0df0 | 1374 | area->min_spf_interval[1] - diff); |
eb5d44eb | 1375 | |
3f045a08 JB |
1376 | if (isis->debugs & DEBUG_SPF_EVENTS) |
1377 | zlog_debug ("ISIS-Spf (%s) L%d SPF scheduled %d sec from now", | |
e38e0df0 | 1378 | area->area_tag, level, area->min_spf_interval[level-1] - diff); |
3f045a08 JB |
1379 | |
1380 | spftree->pending = 1; | |
1381 | ||
1382 | return ISIS_OK; | |
eb5d44eb | 1383 | } |
1384 | ||
1385 | #ifdef HAVE_IPV6 | |
92365889 | 1386 | static int |
12a5cae7 | 1387 | isis_run_spf6_l1 (struct thread *thread) |
1388 | { | |
1389 | struct isis_area *area; | |
1390 | int retval = ISIS_OK; | |
1391 | ||
1392 | area = THREAD_ARG (thread); | |
1393 | assert (area); | |
1394 | ||
1395 | area->spftree6[0]->t_spf = NULL; | |
3f045a08 | 1396 | area->spftree6[0]->pending = 0; |
12a5cae7 | 1397 | |
1398 | if (!(area->is_type & IS_LEVEL_1)) | |
1399 | { | |
1400 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
3f045a08 | 1401 | zlog_warn ("ISIS-SPF (%s) area does not share level", area->area_tag); |
12a5cae7 | 1402 | return ISIS_WARNING; |
1403 | } | |
1404 | ||
1405 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
529d65b3 | 1406 | zlog_debug ("ISIS-Spf (%s) L1 SPF needed, periodic SPF", area->area_tag); |
12a5cae7 | 1407 | |
1408 | if (area->ipv6_circuits) | |
3f045a08 | 1409 | retval = isis_run_spf (area, 1, AF_INET6, isis->sysid); |
12a5cae7 | 1410 | |
1411 | return retval; | |
1412 | } | |
1413 | ||
92365889 | 1414 | static int |
12a5cae7 | 1415 | isis_run_spf6_l2 (struct thread *thread) |
1416 | { | |
1417 | struct isis_area *area; | |
1418 | int retval = ISIS_OK; | |
1419 | ||
1420 | area = THREAD_ARG (thread); | |
1421 | assert (area); | |
1422 | ||
1423 | area->spftree6[1]->t_spf = NULL; | |
3f045a08 | 1424 | area->spftree6[1]->pending = 0; |
12a5cae7 | 1425 | |
1426 | if (!(area->is_type & IS_LEVEL_2)) | |
1427 | { | |
1428 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
1429 | zlog_warn ("ISIS-SPF (%s) area does not share level", area->area_tag); | |
1430 | return ISIS_WARNING; | |
1431 | } | |
1432 | ||
1433 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
fac1f7cc | 1434 | zlog_debug ("ISIS-Spf (%s) L2 SPF needed, periodic SPF.", area->area_tag); |
12a5cae7 | 1435 | |
1436 | if (area->ipv6_circuits) | |
3f045a08 | 1437 | retval = isis_run_spf (area, 2, AF_INET6, isis->sysid); |
12a5cae7 | 1438 | |
1439 | return retval; | |
1440 | } | |
1441 | ||
f390d2c7 | 1442 | int |
eb5d44eb | 1443 | isis_spf_schedule6 (struct isis_area *area, int level) |
1444 | { | |
1445 | int retval = ISIS_OK; | |
1446 | struct isis_spftree *spftree = area->spftree6[level - 1]; | |
e38e0df0 SV |
1447 | time_t now = time (NULL); |
1448 | time_t diff = now - spftree->last_run_timestamp; | |
1449 | ||
1450 | assert (diff >= 0); | |
1451 | assert (area->is_type & level); | |
1452 | ||
1453 | if (isis->debugs & DEBUG_SPF_EVENTS) | |
91283e76 DS |
1454 | zlog_debug ("ISIS-Spf (%s) L%d SPF schedule called, lastrun %lld sec ago", |
1455 | area->area_tag, level, (long long)diff); | |
eb5d44eb | 1456 | |
1457 | if (spftree->pending) | |
e38e0df0 | 1458 | return ISIS_OK; |
eb5d44eb | 1459 | |
12a5cae7 | 1460 | THREAD_TIMER_OFF (spftree->t_spf); |
eb5d44eb | 1461 | |
e38e0df0 SV |
1462 | /* wait configured min_spf_interval before doing the SPF */ |
1463 | if (diff >= area->min_spf_interval[level-1]) | |
1464 | return isis_run_spf (area, level, AF_INET6, isis->sysid); | |
1465 | ||
1466 | if (level == 1) | |
1467 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf6_l1, area, | |
1468 | area->min_spf_interval[0] - diff); | |
3f045a08 | 1469 | else |
e38e0df0 SV |
1470 | THREAD_TIMER_ON (master, spftree->t_spf, isis_run_spf6_l2, area, |
1471 | area->min_spf_interval[1] - diff); | |
3f045a08 | 1472 | |
e38e0df0 | 1473 | if (isis->debugs & DEBUG_SPF_EVENTS) |
91283e76 | 1474 | zlog_debug ("ISIS-Spf (%s) L%d SPF scheduled %lld sec from now", |
8f2c16aa DL |
1475 | area->area_tag, level, |
1476 | (long long)(area->min_spf_interval[level-1] - diff)); | |
f390d2c7 | 1477 | |
e38e0df0 | 1478 | spftree->pending = 1; |
eb5d44eb | 1479 | |
1480 | return retval; | |
1481 | } | |
eb5d44eb | 1482 | #endif |
1483 | ||
92365889 | 1484 | static void |
3f045a08 | 1485 | isis_print_paths (struct vty *vty, struct list *paths, u_char *root_sysid) |
eb5d44eb | 1486 | { |
1eb8ef25 | 1487 | struct listnode *node; |
3f045a08 | 1488 | struct listnode *anode; |
eb5d44eb | 1489 | struct isis_vertex *vertex; |
eb5d44eb | 1490 | struct isis_adjacency *adj; |
4690c7d7 | 1491 | char buff[PREFIX2STR_BUFFER]; |
eb5d44eb | 1492 | |
3f045a08 JB |
1493 | vty_out (vty, "Vertex Type Metric " |
1494 | "Next-Hop Interface Parent%s", VTY_NEWLINE); | |
1495 | ||
1496 | for (ALL_LIST_ELEMENTS_RO (paths, node, vertex)) { | |
1497 | if (memcmp (vertex->N.id, root_sysid, ISIS_SYS_ID_LEN) == 0) { | |
1498 | vty_out (vty, "%-20s %-12s %-6s", print_sys_hostname (root_sysid), | |
1499 | "", ""); | |
1500 | vty_out (vty, "%-30s", ""); | |
1501 | } else { | |
1502 | int rows = 0; | |
4690c7d7 | 1503 | vty_out (vty, "%-20s %-12s %-6u ", vid2string (vertex, buff, sizeof (buff)), |
3f045a08 JB |
1504 | vtype2string (vertex->type), vertex->d_N); |
1505 | for (ALL_LIST_ELEMENTS_RO (vertex->Adj_N, anode, adj)) { | |
1506 | if (adj) { | |
1507 | if (rows) { | |
1508 | vty_out (vty, "%s", VTY_NEWLINE); | |
1509 | vty_out (vty, "%-20s %-12s %-6s ", "", "", ""); | |
1510 | } | |
1511 | vty_out (vty, "%-20s %-9s ", | |
1512 | print_sys_hostname (adj->sysid), | |
1513 | adj->circuit->interface->name); | |
1514 | ++rows; | |
1515 | } | |
1516 | } | |
1517 | if (rows == 0) | |
1518 | vty_out (vty, "%-30s ", ""); | |
1519 | } | |
1eb8ef25 | 1520 | |
3f045a08 JB |
1521 | /* Print list of parents for the ECMP DAG */ |
1522 | if (listcount (vertex->parents) > 0) { | |
1523 | struct listnode *pnode; | |
1524 | struct isis_vertex *pvertex; | |
1525 | int rows = 0; | |
1526 | for (ALL_LIST_ELEMENTS_RO (vertex->parents, pnode, pvertex)) { | |
1527 | if (rows) { | |
1528 | vty_out (vty, "%s", VTY_NEWLINE); | |
1529 | vty_out (vty, "%-72s", ""); | |
1530 | } | |
1531 | vty_out (vty, "%s(%d)", | |
4690c7d7 | 1532 | vid2string (pvertex, buff, sizeof (buff)), pvertex->type); |
3f045a08 | 1533 | ++rows; |
f390d2c7 | 1534 | } |
3f045a08 JB |
1535 | } else { |
1536 | vty_out (vty, " NULL "); | |
1537 | } | |
1538 | ||
3f045a08 | 1539 | vty_out (vty, "%s", VTY_NEWLINE); |
f390d2c7 | 1540 | } |
eb5d44eb | 1541 | } |
1542 | ||
1543 | DEFUN (show_isis_topology, | |
1544 | show_isis_topology_cmd, | |
1545 | "show isis topology", | |
1546 | SHOW_STR | |
1547 | "IS-IS information\n" | |
1548 | "IS-IS paths to Intermediate Systems\n") | |
1549 | { | |
1550 | struct listnode *node; | |
1551 | struct isis_area *area; | |
1552 | int level; | |
f390d2c7 | 1553 | |
eb5d44eb | 1554 | if (!isis->area_list || isis->area_list->count == 0) |
1555 | return CMD_SUCCESS; | |
1556 | ||
1eb8ef25 | 1557 | for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area)) |
f390d2c7 | 1558 | { |
f390d2c7 | 1559 | vty_out (vty, "Area %s:%s", area->area_tag ? area->area_tag : "null", |
1560 | VTY_NEWLINE); | |
1561 | ||
1562 | for (level = 0; level < ISIS_LEVELS; level++) | |
1563 | { | |
1564 | if (area->ip_circuits > 0 && area->spftree[level] | |
1565 | && area->spftree[level]->paths->count > 0) | |
1566 | { | |
1567 | vty_out (vty, "IS-IS paths to level-%d routers that speak IP%s", | |
1568 | level + 1, VTY_NEWLINE); | |
3f045a08 JB |
1569 | isis_print_paths (vty, area->spftree[level]->paths, isis->sysid); |
1570 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1571 | } |
eb5d44eb | 1572 | #ifdef HAVE_IPV6 |
f390d2c7 | 1573 | if (area->ipv6_circuits > 0 && area->spftree6[level] |
1574 | && area->spftree6[level]->paths->count > 0) | |
1575 | { | |
1576 | vty_out (vty, | |
1577 | "IS-IS paths to level-%d routers that speak IPv6%s", | |
1578 | level + 1, VTY_NEWLINE); | |
3f045a08 JB |
1579 | isis_print_paths (vty, area->spftree6[level]->paths, isis->sysid); |
1580 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1581 | } |
eb5d44eb | 1582 | #endif /* HAVE_IPV6 */ |
f390d2c7 | 1583 | } |
3f045a08 JB |
1584 | |
1585 | vty_out (vty, "%s", VTY_NEWLINE); | |
eb5d44eb | 1586 | } |
eb5d44eb | 1587 | |
1588 | return CMD_SUCCESS; | |
f390d2c7 | 1589 | } |
eb5d44eb | 1590 | |
1591 | DEFUN (show_isis_topology_l1, | |
1592 | show_isis_topology_l1_cmd, | |
1593 | "show isis topology level-1", | |
1594 | SHOW_STR | |
1595 | "IS-IS information\n" | |
1596 | "IS-IS paths to Intermediate Systems\n" | |
1597 | "Paths to all level-1 routers in the area\n") | |
1598 | { | |
1599 | struct listnode *node; | |
1600 | struct isis_area *area; | |
f390d2c7 | 1601 | |
eb5d44eb | 1602 | if (!isis->area_list || isis->area_list->count == 0) |
1603 | return CMD_SUCCESS; | |
1604 | ||
1eb8ef25 | 1605 | for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area)) |
f390d2c7 | 1606 | { |
f390d2c7 | 1607 | vty_out (vty, "Area %s:%s", area->area_tag ? area->area_tag : "null", |
1608 | VTY_NEWLINE); | |
1609 | ||
1610 | if (area->ip_circuits > 0 && area->spftree[0] | |
1611 | && area->spftree[0]->paths->count > 0) | |
1612 | { | |
1613 | vty_out (vty, "IS-IS paths to level-1 routers that speak IP%s", | |
1614 | VTY_NEWLINE); | |
3f045a08 JB |
1615 | isis_print_paths (vty, area->spftree[0]->paths, isis->sysid); |
1616 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1617 | } |
eb5d44eb | 1618 | #ifdef HAVE_IPV6 |
f390d2c7 | 1619 | if (area->ipv6_circuits > 0 && area->spftree6[0] |
1620 | && area->spftree6[0]->paths->count > 0) | |
1621 | { | |
1622 | vty_out (vty, "IS-IS paths to level-1 routers that speak IPv6%s", | |
1623 | VTY_NEWLINE); | |
3f045a08 JB |
1624 | isis_print_paths (vty, area->spftree6[0]->paths, isis->sysid); |
1625 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1626 | } |
eb5d44eb | 1627 | #endif /* HAVE_IPV6 */ |
3f045a08 | 1628 | vty_out (vty, "%s", VTY_NEWLINE); |
eb5d44eb | 1629 | } |
1630 | ||
eb5d44eb | 1631 | return CMD_SUCCESS; |
f390d2c7 | 1632 | } |
eb5d44eb | 1633 | |
1634 | DEFUN (show_isis_topology_l2, | |
1635 | show_isis_topology_l2_cmd, | |
1636 | "show isis topology level-2", | |
1637 | SHOW_STR | |
1638 | "IS-IS information\n" | |
1639 | "IS-IS paths to Intermediate Systems\n" | |
1640 | "Paths to all level-2 routers in the domain\n") | |
1641 | { | |
1642 | struct listnode *node; | |
1643 | struct isis_area *area; | |
f390d2c7 | 1644 | |
eb5d44eb | 1645 | if (!isis->area_list || isis->area_list->count == 0) |
1646 | return CMD_SUCCESS; | |
1647 | ||
1eb8ef25 | 1648 | for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area)) |
f390d2c7 | 1649 | { |
f390d2c7 | 1650 | vty_out (vty, "Area %s:%s", area->area_tag ? area->area_tag : "null", |
1651 | VTY_NEWLINE); | |
1652 | ||
1653 | if (area->ip_circuits > 0 && area->spftree[1] | |
1654 | && area->spftree[1]->paths->count > 0) | |
1655 | { | |
1656 | vty_out (vty, "IS-IS paths to level-2 routers that speak IP%s", | |
1657 | VTY_NEWLINE); | |
3f045a08 JB |
1658 | isis_print_paths (vty, area->spftree[1]->paths, isis->sysid); |
1659 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1660 | } |
eb5d44eb | 1661 | #ifdef HAVE_IPV6 |
f390d2c7 | 1662 | if (area->ipv6_circuits > 0 && area->spftree6[1] |
1663 | && area->spftree6[1]->paths->count > 0) | |
1664 | { | |
1665 | vty_out (vty, "IS-IS paths to level-2 routers that speak IPv6%s", | |
1666 | VTY_NEWLINE); | |
3f045a08 JB |
1667 | isis_print_paths (vty, area->spftree6[1]->paths, isis->sysid); |
1668 | vty_out (vty, "%s", VTY_NEWLINE); | |
f390d2c7 | 1669 | } |
eb5d44eb | 1670 | #endif /* HAVE_IPV6 */ |
3f045a08 | 1671 | vty_out (vty, "%s", VTY_NEWLINE); |
eb5d44eb | 1672 | } |
1673 | ||
eb5d44eb | 1674 | return CMD_SUCCESS; |
f390d2c7 | 1675 | } |
eb5d44eb | 1676 | |
1677 | void | |
1678 | isis_spf_cmds_init () | |
1679 | { | |
1680 | install_element (VIEW_NODE, &show_isis_topology_cmd); | |
1681 | install_element (VIEW_NODE, &show_isis_topology_l1_cmd); | |
1682 | install_element (VIEW_NODE, &show_isis_topology_l2_cmd); | |
eb5d44eb | 1683 | } |