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1 | /* |
2 | * Copyright (C) 2020 NetDEF, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the Free | |
6 | * Software Foundation; either version 2 of the License, or (at your option) | |
7 | * any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; see the file COPYING; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | ||
19 | #include <zebra.h> | |
20 | ||
21 | #include "memory.h" | |
22 | #include "log.h" | |
23 | #include "lib_errors.h" | |
24 | ||
25 | #include "pathd/pathd.h" | |
26 | #include "pathd/path_memory.h" | |
27 | #include "pathd/path_zebra.h" | |
28 | #include "pathd/path_debug.h" | |
29 | ||
30 | #define HOOK_DELAY 3 | |
31 | ||
32 | DEFINE_MTYPE_STATIC(PATHD, PATH_SEGMENT_LIST, "Segment List") | |
33 | DEFINE_MTYPE_STATIC(PATHD, PATH_SR_POLICY, "SR Policy") | |
34 | DEFINE_MTYPE_STATIC(PATHD, PATH_SR_CANDIDATE, "SR Policy candidate path") | |
35 | ||
36 | DEFINE_HOOK(pathd_candidate_created, (struct srte_candidate * candidate), | |
37 | (candidate)) | |
38 | DEFINE_HOOK(pathd_candidate_updated, (struct srte_candidate * candidate), | |
39 | (candidate)) | |
40 | DEFINE_HOOK(pathd_candidate_removed, (struct srte_candidate * candidate), | |
41 | (candidate)) | |
42 | ||
43 | static void trigger_pathd_candidate_created(struct srte_candidate *candidate); | |
44 | static int trigger_pathd_candidate_created_timer(struct thread *thread); | |
45 | static void trigger_pathd_candidate_updated(struct srte_candidate *candidate); | |
46 | static int trigger_pathd_candidate_updated_timer(struct thread *thread); | |
47 | static void trigger_pathd_candidate_removed(struct srte_candidate *candidate); | |
48 | static const char * | |
49 | srte_candidate_metric_name(enum srte_candidate_metric_type type); | |
50 | ||
51 | static void srte_set_metric(struct srte_metric *metric, float value, | |
52 | bool required, bool is_bound, bool is_computed); | |
53 | static void srte_unset_metric(struct srte_metric *metric); | |
54 | ||
55 | ||
56 | /* Generate rb-tree of Segment List Segment instances. */ | |
57 | static inline int srte_segment_entry_compare(const struct srte_segment_entry *a, | |
58 | const struct srte_segment_entry *b) | |
59 | { | |
60 | return a->index - b->index; | |
61 | } | |
62 | RB_GENERATE(srte_segment_entry_head, srte_segment_entry, entry, | |
63 | srte_segment_entry_compare) | |
64 | ||
65 | /* Generate rb-tree of Segment List instances. */ | |
66 | static inline int srte_segment_list_compare(const struct srte_segment_list *a, | |
67 | const struct srte_segment_list *b) | |
68 | { | |
69 | return strcmp(a->name, b->name); | |
70 | } | |
71 | RB_GENERATE(srte_segment_list_head, srte_segment_list, entry, | |
72 | srte_segment_list_compare) | |
73 | ||
74 | struct srte_segment_list_head srte_segment_lists = | |
75 | RB_INITIALIZER(&srte_segment_lists); | |
76 | ||
77 | /* Generate rb-tree of Candidate Path instances. */ | |
78 | static inline int srte_candidate_compare(const struct srte_candidate *a, | |
79 | const struct srte_candidate *b) | |
80 | { | |
81 | return a->preference - b->preference; | |
82 | } | |
83 | RB_GENERATE(srte_candidate_head, srte_candidate, entry, srte_candidate_compare) | |
84 | ||
85 | /* Generate rb-tree of SR Policy instances. */ | |
86 | static inline int srte_policy_compare(const struct srte_policy *a, | |
87 | const struct srte_policy *b) | |
88 | { | |
89 | return sr_policy_compare(&a->endpoint, &b->endpoint, a->color, | |
90 | b->color); | |
91 | } | |
92 | RB_GENERATE(srte_policy_head, srte_policy, entry, srte_policy_compare) | |
93 | ||
94 | struct srte_policy_head srte_policies = RB_INITIALIZER(&srte_policies); | |
95 | ||
96 | /** | |
97 | * Adds a segment list to pathd. | |
98 | * | |
99 | * @param name The name of the segment list to add | |
100 | * @return The added segment list | |
101 | */ | |
102 | struct srte_segment_list *srte_segment_list_add(const char *name) | |
103 | { | |
104 | struct srte_segment_list *segment_list; | |
105 | ||
106 | segment_list = XCALLOC(MTYPE_PATH_SEGMENT_LIST, sizeof(*segment_list)); | |
107 | strlcpy(segment_list->name, name, sizeof(segment_list->name)); | |
108 | RB_INIT(srte_segment_entry_head, &segment_list->segments); | |
109 | RB_INSERT(srte_segment_list_head, &srte_segment_lists, segment_list); | |
110 | ||
111 | return segment_list; | |
112 | } | |
113 | ||
114 | /** | |
115 | * Deletes a segment list from pathd. | |
116 | * | |
117 | * The given segment list structure will be freed and should not be used anymore | |
118 | * after calling this function. | |
119 | * | |
120 | * @param segment_list the segment list to remove from pathd. | |
121 | */ | |
122 | void srte_segment_list_del(struct srte_segment_list *segment_list) | |
123 | { | |
124 | struct srte_segment_entry *segment, *safe_seg; | |
125 | RB_FOREACH_SAFE (segment, srte_segment_entry_head, | |
126 | &segment_list->segments, safe_seg) { | |
127 | srte_segment_entry_del(segment); | |
128 | } | |
129 | RB_REMOVE(srte_segment_list_head, &srte_segment_lists, segment_list); | |
130 | XFREE(MTYPE_PATH_SEGMENT_LIST, segment_list); | |
131 | } | |
132 | ||
133 | /** | |
134 | * Search for a segment list by name. | |
135 | * | |
136 | * @param name The name of the segment list to look for | |
137 | * @return The segment list if found, NULL otherwise | |
138 | */ | |
139 | struct srte_segment_list *srte_segment_list_find(const char *name) | |
140 | { | |
141 | struct srte_segment_list search; | |
142 | ||
143 | strlcpy(search.name, name, sizeof(search.name)); | |
144 | return RB_FIND(srte_segment_list_head, &srte_segment_lists, &search); | |
145 | } | |
146 | ||
147 | /** | |
148 | * Adds a segment to a segment list. | |
149 | * | |
150 | * @param segment_list The segment list the segment should be added to | |
151 | * @param index The index of the added segment in the segment list | |
152 | * @return The added segment | |
153 | */ | |
154 | struct srte_segment_entry * | |
155 | srte_segment_entry_add(struct srte_segment_list *segment_list, uint32_t index) | |
156 | { | |
157 | struct srte_segment_entry *segment; | |
158 | ||
159 | segment = XCALLOC(MTYPE_PATH_SEGMENT_LIST, sizeof(*segment)); | |
160 | segment->segment_list = segment_list; | |
161 | segment->index = index; | |
162 | RB_INSERT(srte_segment_entry_head, &segment_list->segments, segment); | |
163 | ||
164 | return segment; | |
165 | } | |
166 | ||
167 | /** | |
168 | * Deletes a segment from a segment list. | |
169 | * | |
170 | * @param segment The segment to be removed | |
171 | */ | |
172 | void srte_segment_entry_del(struct srte_segment_entry *segment) | |
173 | { | |
174 | RB_REMOVE(srte_segment_entry_head, &segment->segment_list->segments, | |
175 | segment); | |
176 | XFREE(MTYPE_PATH_SEGMENT_LIST, segment); | |
177 | } | |
178 | ||
179 | /** | |
180 | * Set the node or adjacency identifier of a segment. | |
181 | * | |
182 | * @param segment The segment for which the NAI should be set | |
183 | * @param type The type of the NAI | |
184 | * @param type The address of the node or the local address of the adjacency | |
185 | * @param type The local interface index of the unumbered adjacency | |
186 | * @param type The remote address of the adjacency | |
187 | * @param type The remote interface index of the unumbered adjacency | |
188 | */ | |
189 | void srte_segment_entry_set_nai(struct srte_segment_entry *segment, | |
190 | enum srte_segment_nai_type type, | |
191 | struct ipaddr *local_ip, uint32_t local_iface, | |
192 | struct ipaddr *remote_ip, uint32_t remote_iface) | |
193 | { | |
194 | segment->nai_type = type; | |
195 | memcpy(&segment->nai_local_addr, local_ip, sizeof(struct ipaddr)); | |
196 | ||
197 | switch (type) { | |
198 | case SRTE_SEGMENT_NAI_TYPE_IPV4_NODE: | |
199 | case SRTE_SEGMENT_NAI_TYPE_IPV6_NODE: | |
200 | break; | |
201 | case SRTE_SEGMENT_NAI_TYPE_IPV4_ADJACENCY: | |
202 | case SRTE_SEGMENT_NAI_TYPE_IPV6_ADJACENCY: | |
203 | memcpy(&segment->nai_remote_addr, remote_ip, | |
204 | sizeof(struct ipaddr)); | |
205 | break; | |
206 | case SRTE_SEGMENT_NAI_TYPE_IPV4_UNNUMBERED_ADJACENCY: | |
207 | memcpy(&segment->nai_remote_addr, remote_ip, | |
208 | sizeof(struct ipaddr)); | |
209 | segment->nai_local_iface = local_iface; | |
210 | segment->nai_remote_iface = remote_iface; | |
211 | break; | |
212 | default: | |
213 | segment->nai_local_addr.ipa_type = IPADDR_NONE; | |
214 | segment->nai_local_iface = 0; | |
215 | segment->nai_remote_addr.ipa_type = IPADDR_NONE; | |
216 | segment->nai_remote_iface = 0; | |
217 | } | |
218 | } | |
219 | ||
220 | /** | |
221 | * Add a policy to pathd. | |
222 | * | |
223 | * WARNING: The color 0 is a special case as it is the no-color. | |
224 | * | |
225 | * @param color The color of the policy. | |
226 | * @param endpoint The IP address of the policy endpoint | |
227 | * @return The created policy | |
228 | */ | |
229 | struct srte_policy *srte_policy_add(uint32_t color, struct ipaddr *endpoint) | |
230 | { | |
231 | struct srte_policy *policy; | |
232 | ||
233 | policy = XCALLOC(MTYPE_PATH_SR_POLICY, sizeof(*policy)); | |
234 | policy->color = color; | |
235 | policy->endpoint = *endpoint; | |
236 | policy->binding_sid = MPLS_LABEL_NONE; | |
237 | RB_INIT(srte_candidate_head, &policy->candidate_paths); | |
238 | RB_INSERT(srte_policy_head, &srte_policies, policy); | |
239 | ||
240 | return policy; | |
241 | } | |
242 | ||
243 | /** | |
244 | * Delete a policy from pathd. | |
245 | * | |
246 | * The given policy structure will be freed and should never be used again | |
247 | * after calling this function. | |
248 | * | |
249 | * @param policy The policy to be removed | |
250 | */ | |
251 | void srte_policy_del(struct srte_policy *policy) | |
252 | { | |
253 | struct srte_candidate *candidate; | |
254 | ||
255 | path_zebra_delete_sr_policy(policy); | |
256 | ||
257 | path_zebra_release_label(policy->binding_sid); | |
258 | ||
259 | while (!RB_EMPTY(srte_candidate_head, &policy->candidate_paths)) { | |
260 | candidate = | |
261 | RB_ROOT(srte_candidate_head, &policy->candidate_paths); | |
262 | trigger_pathd_candidate_removed(candidate); | |
263 | srte_candidate_del(candidate); | |
264 | } | |
265 | ||
266 | RB_REMOVE(srte_policy_head, &srte_policies, policy); | |
267 | XFREE(MTYPE_PATH_SR_POLICY, policy); | |
268 | } | |
269 | ||
270 | /** | |
271 | * Search for a policy by color and endpoint. | |
272 | * | |
273 | * WARNING: The color 0 is a special case as it is the no-color. | |
274 | * | |
275 | * @param color The color of the policy to look for | |
276 | * @param endpoint The endpoint of the policy to look for | |
277 | * @return The policy if found, NULL otherwise | |
278 | */ | |
279 | struct srte_policy *srte_policy_find(uint32_t color, struct ipaddr *endpoint) | |
280 | { | |
281 | struct srte_policy search; | |
282 | ||
283 | search.color = color; | |
284 | search.endpoint = *endpoint; | |
285 | return RB_FIND(srte_policy_head, &srte_policies, &search); | |
286 | } | |
287 | ||
288 | /** | |
289 | * Update a policy binding SID. | |
290 | * | |
291 | * @param policy The policy for which the SID should be updated | |
292 | * @param binding_sid The new binding SID for the given policy | |
293 | */ | |
294 | void srte_policy_update_binding_sid(struct srte_policy *policy, | |
295 | uint32_t binding_sid) | |
296 | { | |
297 | if (policy->binding_sid != MPLS_LABEL_NONE) | |
298 | path_zebra_release_label(policy->binding_sid); | |
299 | ||
300 | policy->binding_sid = binding_sid; | |
301 | ||
302 | /* Reinstall the Binding-SID if necessary. */ | |
303 | if (policy->best_candidate) | |
304 | path_zebra_add_sr_policy( | |
305 | policy, policy->best_candidate->lsp->segment_list); | |
306 | } | |
307 | ||
308 | /** | |
309 | * Gives the policy best candidate path. | |
310 | * | |
311 | * @param policy The policy we want the best candidate path from | |
312 | * @return The best candidate path | |
313 | */ | |
314 | static struct srte_candidate * | |
315 | srte_policy_best_candidate(const struct srte_policy *policy) | |
316 | { | |
317 | struct srte_candidate *candidate; | |
318 | ||
319 | RB_FOREACH_REVERSE (candidate, srte_candidate_head, | |
320 | &policy->candidate_paths) { | |
321 | /* search for highest preference with existing segment list */ | |
322 | if (!CHECK_FLAG(candidate->flags, F_CANDIDATE_DELETED) | |
323 | && candidate->lsp->segment_list) | |
324 | return candidate; | |
325 | } | |
326 | ||
327 | return NULL; | |
328 | } | |
329 | ||
330 | /** | |
331 | * Apply changes defined by setting the policies, candidate paths | |
332 | * and segment lists modification flags NEW, MODIFIED and DELETED. | |
333 | * | |
334 | * This allows the northbound code to delay all the side effects of adding | |
335 | * modifying and deleting them to the end. | |
336 | * | |
337 | * Example of marking an object as modified: | |
338 | * `SET_FLAG(obj->flags, F_XXX_MODIFIED)` | |
339 | */ | |
340 | void srte_apply_changes(void) | |
341 | { | |
342 | struct srte_policy *policy, *safe_pol; | |
343 | struct srte_segment_list *segment_list, *safe_sl; | |
344 | ||
345 | RB_FOREACH_SAFE (policy, srte_policy_head, &srte_policies, safe_pol) { | |
346 | if (CHECK_FLAG(policy->flags, F_POLICY_DELETED)) { | |
347 | srte_policy_del(policy); | |
348 | continue; | |
349 | } | |
350 | srte_policy_apply_changes(policy); | |
351 | UNSET_FLAG(policy->flags, F_POLICY_NEW); | |
352 | UNSET_FLAG(policy->flags, F_POLICY_MODIFIED); | |
353 | } | |
354 | ||
355 | RB_FOREACH_SAFE (segment_list, srte_segment_list_head, | |
356 | &srte_segment_lists, safe_sl) { | |
357 | if (CHECK_FLAG(segment_list->flags, F_SEGMENT_LIST_DELETED)) { | |
358 | srte_segment_list_del(segment_list); | |
359 | continue; | |
360 | } | |
361 | UNSET_FLAG(segment_list->flags, F_SEGMENT_LIST_NEW); | |
362 | UNSET_FLAG(segment_list->flags, F_SEGMENT_LIST_MODIFIED); | |
363 | } | |
364 | } | |
365 | ||
366 | /** | |
367 | * Apply changes defined by setting the given policy and its candidate paths | |
368 | * modification flags NEW, MODIFIED and DELETED. | |
369 | * | |
370 | * In moste cases `void srte_apply_changes(void)` should be used instead, | |
371 | * this function will not handle the changes of segment lists used by the | |
372 | * policy. | |
373 | * | |
374 | * @param policy The policy changes has to be applied to. | |
375 | */ | |
376 | void srte_policy_apply_changes(struct srte_policy *policy) | |
377 | { | |
378 | struct srte_candidate *candidate, *safe; | |
379 | struct srte_candidate *old_best_candidate; | |
380 | struct srte_candidate *new_best_candidate; | |
381 | char endpoint[46]; | |
382 | ||
383 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
384 | ||
385 | /* Get old and new best candidate path. */ | |
386 | old_best_candidate = policy->best_candidate; | |
387 | new_best_candidate = srte_policy_best_candidate(policy); | |
388 | ||
389 | if (new_best_candidate != old_best_candidate) { | |
390 | /* TODO: add debug guard. */ | |
391 | zlog_debug( | |
392 | "SR-TE(%s, %u): best candidate changed from %s to %s", | |
393 | endpoint, policy->color, | |
394 | old_best_candidate ? old_best_candidate->name : "none", | |
395 | new_best_candidate ? new_best_candidate->name : "none"); | |
396 | ||
397 | if (old_best_candidate) { | |
398 | policy->best_candidate = NULL; | |
399 | UNSET_FLAG(old_best_candidate->flags, F_CANDIDATE_BEST); | |
400 | SET_FLAG(old_best_candidate->flags, | |
401 | F_CANDIDATE_MODIFIED); | |
402 | ||
403 | /* | |
404 | * Rely on replace semantics if there's a new best | |
405 | * candidate. | |
406 | */ | |
407 | if (!new_best_candidate) | |
408 | path_zebra_delete_sr_policy(policy); | |
409 | } | |
410 | if (new_best_candidate) { | |
411 | policy->best_candidate = new_best_candidate; | |
412 | SET_FLAG(new_best_candidate->flags, F_CANDIDATE_BEST); | |
413 | SET_FLAG(new_best_candidate->flags, | |
414 | F_CANDIDATE_MODIFIED); | |
415 | ||
416 | path_zebra_add_sr_policy( | |
417 | policy, new_best_candidate->lsp->segment_list); | |
418 | } | |
419 | } else if (new_best_candidate) { | |
420 | /* The best candidate path did not change, but some of its | |
421 | * attributes or its segment list may have changed. | |
422 | */ | |
423 | ||
424 | bool candidate_changed = CHECK_FLAG(new_best_candidate->flags, | |
425 | F_CANDIDATE_MODIFIED); | |
426 | bool segment_list_changed = | |
427 | new_best_candidate->lsp->segment_list | |
428 | && CHECK_FLAG( | |
429 | new_best_candidate->lsp->segment_list->flags, | |
430 | F_SEGMENT_LIST_MODIFIED); | |
431 | ||
432 | if (candidate_changed || segment_list_changed) { | |
433 | /* TODO: add debug guard. */ | |
434 | zlog_debug("SR-TE(%s, %u): best candidate %s changed", | |
435 | endpoint, policy->color, | |
436 | new_best_candidate->name); | |
437 | ||
438 | path_zebra_add_sr_policy( | |
439 | policy, new_best_candidate->lsp->segment_list); | |
440 | } | |
441 | } | |
442 | ||
443 | RB_FOREACH_SAFE (candidate, srte_candidate_head, | |
444 | &policy->candidate_paths, safe) { | |
445 | if (CHECK_FLAG(candidate->flags, F_CANDIDATE_DELETED)) { | |
446 | trigger_pathd_candidate_removed(candidate); | |
447 | srte_candidate_del(candidate); | |
448 | continue; | |
449 | } else if (CHECK_FLAG(candidate->flags, F_CANDIDATE_NEW)) { | |
450 | trigger_pathd_candidate_created(candidate); | |
451 | } else if (CHECK_FLAG(candidate->flags, F_CANDIDATE_MODIFIED)) { | |
452 | trigger_pathd_candidate_updated(candidate); | |
453 | } else if (candidate->lsp->segment_list | |
454 | && CHECK_FLAG(candidate->lsp->segment_list->flags, | |
455 | F_SEGMENT_LIST_MODIFIED)) { | |
456 | trigger_pathd_candidate_updated(candidate); | |
457 | } | |
458 | ||
459 | UNSET_FLAG(candidate->flags, F_CANDIDATE_NEW); | |
460 | UNSET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
461 | } | |
462 | } | |
463 | ||
464 | /** | |
465 | * Adds a candidate path to a policy. | |
466 | * | |
467 | * @param policy The policy the candidate path should be added to | |
468 | * @param preference The preference of the candidate path to be added | |
469 | * @return The added candidate path | |
470 | */ | |
471 | struct srte_candidate *srte_candidate_add(struct srte_policy *policy, | |
472 | uint32_t preference) | |
473 | { | |
474 | struct srte_candidate *candidate; | |
475 | struct srte_lsp *lsp; | |
476 | ||
477 | candidate = XCALLOC(MTYPE_PATH_SR_CANDIDATE, sizeof(*candidate)); | |
478 | lsp = XCALLOC(MTYPE_PATH_SR_CANDIDATE, sizeof(*lsp)); | |
479 | ||
480 | candidate->preference = preference; | |
481 | candidate->policy = policy; | |
482 | candidate->type = SRTE_CANDIDATE_TYPE_UNDEFINED; | |
483 | candidate->discriminator = rand(); | |
484 | ||
485 | lsp->candidate = candidate; | |
486 | candidate->lsp = lsp; | |
487 | ||
488 | RB_INSERT(srte_candidate_head, &policy->candidate_paths, candidate); | |
489 | ||
490 | return candidate; | |
491 | } | |
492 | ||
493 | /** | |
494 | * Deletes a candidate. | |
495 | * | |
496 | * The corresponding LSP will be removed alongside the candidate path. | |
497 | * The given candidate will be freed and shouldn't be used anymore after the | |
498 | * calling this function. | |
499 | * | |
500 | * @param candidate The candidate path to delete | |
501 | */ | |
502 | void srte_candidate_del(struct srte_candidate *candidate) | |
503 | { | |
504 | struct srte_policy *srte_policy = candidate->policy; | |
505 | ||
506 | RB_REMOVE(srte_candidate_head, &srte_policy->candidate_paths, | |
507 | candidate); | |
508 | ||
509 | XFREE(MTYPE_PATH_SR_CANDIDATE, candidate->lsp); | |
510 | XFREE(MTYPE_PATH_SR_CANDIDATE, candidate); | |
511 | } | |
512 | ||
513 | /** | |
514 | * Sets the bandwidth constraint of given candidate path. | |
515 | * | |
516 | * The corresponding LSP will be changed too. | |
517 | * | |
518 | * @param candidate The candidate path of which the bandwidth should be changed | |
519 | * @param bandwidth The Bandwidth constraint to set to the candidate path | |
520 | * @param required If the constraint is required (true) or only desired (false) | |
521 | */ | |
522 | void srte_candidate_set_bandwidth(struct srte_candidate *candidate, | |
523 | float bandwidth, bool required) | |
524 | { | |
525 | struct srte_policy *policy = candidate->policy; | |
526 | char endpoint[46]; | |
527 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
528 | zlog_debug( | |
529 | "SR-TE(%s, %u): candidate %s %sconfig bandwidth set to %f B/s", | |
530 | endpoint, policy->color, candidate->name, | |
531 | required ? "required " : "", bandwidth); | |
532 | SET_FLAG(candidate->flags, F_CANDIDATE_HAS_BANDWIDTH); | |
533 | COND_FLAG(candidate->flags, F_CANDIDATE_REQUIRED_BANDWIDTH, required); | |
534 | candidate->bandwidth = bandwidth; | |
535 | ||
536 | srte_lsp_set_bandwidth(candidate->lsp, bandwidth, required); | |
537 | } | |
538 | ||
539 | /** | |
540 | * Sets the bandwidth constraint of the given LSP. | |
541 | * | |
542 | * The changes will not be shown as part of the running configuration. | |
543 | * | |
544 | * @param lsp The lsp of which the bandwidth should be changed | |
545 | * @param bandwidth The Bandwidth constraint to set to the candidate path | |
546 | * @param required If the constraint is required (true) or only desired (false) | |
547 | */ | |
548 | void srte_lsp_set_bandwidth(struct srte_lsp *lsp, float bandwidth, | |
549 | bool required) | |
550 | { | |
551 | struct srte_candidate *candidate = lsp->candidate; | |
552 | struct srte_policy *policy = candidate->policy; | |
553 | char endpoint[46]; | |
554 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
555 | zlog_debug("SR-TE(%s, %u): candidate %s %slsp bandwidth set to %f B/s", | |
556 | endpoint, policy->color, candidate->name, | |
557 | required ? "required" : "", bandwidth); | |
558 | SET_FLAG(lsp->flags, F_CANDIDATE_HAS_BANDWIDTH); | |
559 | COND_FLAG(lsp->flags, F_CANDIDATE_REQUIRED_BANDWIDTH, required); | |
560 | lsp->bandwidth = bandwidth; | |
561 | } | |
562 | ||
563 | /** | |
564 | * Remove a candidate path bandwidth constraint. | |
565 | * | |
566 | * The corresponding LSP will be changed too. | |
567 | * | |
568 | * @param candidate The candidate path of which the bandwidth should be removed | |
569 | */ | |
570 | void srte_candidate_unset_bandwidth(struct srte_candidate *candidate) | |
571 | { | |
572 | struct srte_policy *policy = candidate->policy; | |
573 | char endpoint[46]; | |
574 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
575 | zlog_debug("SR-TE(%s, %u): candidate %s config bandwidth unset", | |
576 | endpoint, policy->color, candidate->name); | |
577 | UNSET_FLAG(candidate->flags, F_CANDIDATE_HAS_BANDWIDTH); | |
578 | UNSET_FLAG(candidate->flags, F_CANDIDATE_REQUIRED_BANDWIDTH); | |
579 | candidate->bandwidth = 0; | |
580 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
581 | srte_lsp_unset_bandwidth(candidate->lsp); | |
582 | } | |
583 | ||
584 | /** | |
585 | * Remove an LSP bandwidth constraint. | |
586 | * | |
587 | * The changes will not be shown as part of the running configuration. | |
588 | * | |
589 | * @param lsp The lsp of which the bandwidth should be changed | |
590 | */ | |
591 | void srte_lsp_unset_bandwidth(struct srte_lsp *lsp) | |
592 | { | |
593 | struct srte_candidate *candidate = lsp->candidate; | |
594 | struct srte_policy *policy = candidate->policy; | |
595 | char endpoint[46]; | |
596 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
597 | zlog_debug("SR-TE(%s, %u): candidate %s lsp bandwidth unset", endpoint, | |
598 | policy->color, candidate->name); | |
599 | UNSET_FLAG(lsp->flags, F_CANDIDATE_HAS_BANDWIDTH); | |
600 | UNSET_FLAG(lsp->flags, F_CANDIDATE_REQUIRED_BANDWIDTH); | |
601 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
602 | lsp->bandwidth = 0; | |
603 | } | |
604 | ||
605 | /** | |
606 | * Sets a candidate path metric constraint. | |
607 | * | |
608 | * The corresponding LSP will be changed too. | |
609 | * | |
610 | * @param candidate The candidate path of which the metric should be changed | |
611 | * @param type The metric type | |
612 | * @param value The metric value | |
613 | * @param required If the constraint is required (true) or only desired (false) | |
614 | * @param is_bound If the metric is an indicative value or a strict upper bound | |
615 | * @param is_computed If the metric was computed or configured | |
616 | */ | |
617 | void srte_candidate_set_metric(struct srte_candidate *candidate, | |
618 | enum srte_candidate_metric_type type, | |
619 | float value, bool required, bool is_bound, | |
620 | bool is_computed) | |
621 | { | |
622 | struct srte_policy *policy = candidate->policy; | |
623 | char endpoint[46]; | |
624 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
625 | zlog_debug( | |
626 | "SR-TE(%s, %u): candidate %s %sconfig metric %s (%u) set to %f " | |
627 | "(is-bound: %s; is_computed: %s)", | |
628 | endpoint, policy->color, candidate->name, | |
629 | required ? "required " : "", srte_candidate_metric_name(type), | |
630 | type, value, is_bound ? "true" : "false", | |
631 | is_computed ? "true" : "false"); | |
632 | assert((type > 0) && (type <= MAX_METRIC_TYPE)); | |
633 | srte_set_metric(&candidate->metrics[type - 1], value, required, | |
634 | is_bound, is_computed); | |
635 | srte_lsp_set_metric(candidate->lsp, type, value, required, is_bound, | |
636 | is_computed); | |
637 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
638 | } | |
639 | ||
640 | /** | |
641 | * Sets an LSP metric constraint. | |
642 | * | |
643 | * The changes will not be shown as part of the running configuration. | |
644 | * | |
645 | * @param lsp The LSP of which the metric should be changed | |
646 | * @param type The metric type | |
647 | * @param value The metric value | |
648 | * @param required If the constraint is required (true) or only desired (false) | |
649 | * @param is_bound If the metric is an indicative value or a strict upper bound | |
650 | * @param is_computed If the metric was computed or configured | |
651 | */ | |
652 | void srte_lsp_set_metric(struct srte_lsp *lsp, | |
653 | enum srte_candidate_metric_type type, float value, | |
654 | bool required, bool is_bound, bool is_computed) | |
655 | { | |
656 | struct srte_candidate *candidate = lsp->candidate; | |
657 | struct srte_policy *policy = candidate->policy; | |
658 | char endpoint[46]; | |
659 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
660 | zlog_debug( | |
661 | "SR-TE(%s, %u): candidate %s %slsp metric %s (%u) set to %f " | |
662 | "(is-bound: %s; is_computed: %s)", | |
663 | endpoint, policy->color, candidate->name, | |
664 | required ? "required " : "", srte_candidate_metric_name(type), | |
665 | type, value, is_bound ? "true" : "false", | |
666 | is_computed ? "true" : "false"); | |
667 | assert((type > 0) && (type <= MAX_METRIC_TYPE)); | |
668 | srte_set_metric(&lsp->metrics[type - 1], value, required, is_bound, | |
669 | is_computed); | |
670 | } | |
671 | ||
672 | void srte_set_metric(struct srte_metric *metric, float value, bool required, | |
673 | bool is_bound, bool is_computed) | |
674 | { | |
675 | SET_FLAG(metric->flags, F_METRIC_IS_DEFINED); | |
676 | COND_FLAG(metric->flags, F_METRIC_IS_REQUIRED, required); | |
677 | COND_FLAG(metric->flags, F_METRIC_IS_BOUND, is_bound); | |
678 | COND_FLAG(metric->flags, F_METRIC_IS_COMPUTED, is_computed); | |
679 | metric->value = value; | |
680 | } | |
681 | ||
682 | /** | |
683 | * Removes a candidate path metric constraint. | |
684 | * | |
685 | * The corresponding LSP will be changed too. | |
686 | * | |
687 | * @param candidate The candidate path from which the metric should be removed | |
688 | * @param type The metric type | |
689 | */ | |
690 | void srte_candidate_unset_metric(struct srte_candidate *candidate, | |
691 | enum srte_candidate_metric_type type) | |
692 | { | |
693 | struct srte_policy *policy = candidate->policy; | |
694 | char endpoint[46]; | |
695 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
696 | zlog_debug("SR-TE(%s, %u): candidate %s config metric %s (%u) unset", | |
697 | endpoint, policy->color, candidate->name, | |
698 | srte_candidate_metric_name(type), type); | |
699 | assert((type > 0) && (type <= MAX_METRIC_TYPE)); | |
700 | srte_unset_metric(&candidate->metrics[type - 1]); | |
701 | srte_lsp_unset_metric(candidate->lsp, type); | |
702 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
703 | } | |
704 | ||
705 | /** | |
706 | * Removes a candidate path metric constraint. | |
707 | * | |
708 | * The changes will not be shown as part of the running configuration. | |
709 | * | |
710 | * @param lsp The LSP from which the metric should be removed | |
711 | * @param type The metric type | |
712 | */ | |
713 | void srte_lsp_unset_metric(struct srte_lsp *lsp, | |
714 | enum srte_candidate_metric_type type) | |
715 | { | |
716 | struct srte_candidate *candidate = lsp->candidate; | |
717 | struct srte_policy *policy = candidate->policy; | |
718 | char endpoint[46]; | |
719 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
720 | zlog_debug("SR-TE(%s, %u): candidate %s lsp metric %s (%u) unset", | |
721 | endpoint, policy->color, candidate->name, | |
722 | srte_candidate_metric_name(type), type); | |
723 | assert((type > 0) && (type <= MAX_METRIC_TYPE)); | |
724 | srte_unset_metric(&lsp->metrics[type - 1]); | |
725 | } | |
726 | ||
727 | void srte_unset_metric(struct srte_metric *metric) | |
728 | { | |
729 | UNSET_FLAG(metric->flags, F_METRIC_IS_DEFINED); | |
730 | UNSET_FLAG(metric->flags, F_METRIC_IS_BOUND); | |
731 | UNSET_FLAG(metric->flags, F_METRIC_IS_COMPUTED); | |
732 | metric->value = 0; | |
733 | } | |
734 | ||
735 | /** | |
736 | * Sets a candidate path objective function. | |
737 | * | |
738 | * @param candidate The candidate path of which the OF should be changed | |
739 | * @param required If the constraint is required (true) or only desired (false) | |
740 | * @param type The objective function type | |
741 | */ | |
742 | void srte_candidate_set_objfun(struct srte_candidate *candidate, bool required, | |
743 | enum objfun_type type) | |
744 | { | |
745 | struct srte_policy *policy = candidate->policy; | |
746 | char endpoint[46]; | |
747 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
748 | ||
749 | candidate->objfun = type; | |
750 | SET_FLAG(candidate->flags, F_CANDIDATE_HAS_OBJFUN); | |
751 | COND_FLAG(candidate->flags, F_CANDIDATE_REQUIRED_OBJFUN, required); | |
752 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
753 | zlog_debug("SR-TE(%s, %u): candidate %s %sobjective function set to %s", | |
754 | endpoint, policy->color, candidate->name, | |
755 | required ? "required " : "", objfun_type_name(type)); | |
756 | } | |
757 | ||
758 | /** | |
759 | * Removed the objective function constraint from a candidate path. | |
760 | * | |
761 | * @param candidate The candidate path from which the OF should be removed | |
762 | */ | |
763 | void srte_candidate_unset_objfun(struct srte_candidate *candidate) | |
764 | { | |
765 | struct srte_policy *policy = candidate->policy; | |
766 | char endpoint[46]; | |
767 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
768 | ||
769 | UNSET_FLAG(candidate->flags, F_CANDIDATE_HAS_OBJFUN); | |
770 | UNSET_FLAG(candidate->flags, F_CANDIDATE_REQUIRED_OBJFUN); | |
771 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
772 | candidate->objfun = OBJFUN_UNDEFINED; | |
773 | zlog_debug( | |
774 | "SR-TE(%s, %u): candidate %s objective functions preferences unset", | |
775 | endpoint, policy->color, candidate->name); | |
776 | } | |
777 | ||
778 | static uint32_t filter_type_to_flag(enum affinity_filter_type type) | |
779 | { | |
780 | switch (type) { | |
781 | case AFFINITY_FILTER_EXCLUDE_ANY: | |
782 | return F_CANDIDATE_HAS_EXCLUDE_ANY; | |
783 | case AFFINITY_FILTER_INCLUDE_ANY: | |
784 | return F_CANDIDATE_HAS_INCLUDE_ANY; | |
785 | case AFFINITY_FILTER_INCLUDE_ALL: | |
786 | return F_CANDIDATE_HAS_INCLUDE_ALL; | |
787 | default: | |
788 | return 0; | |
789 | } | |
790 | } | |
791 | ||
792 | static const char *filter_type_name(enum affinity_filter_type type) | |
793 | { | |
794 | switch (type) { | |
795 | case AFFINITY_FILTER_EXCLUDE_ANY: | |
796 | return "exclude-any"; | |
797 | case AFFINITY_FILTER_INCLUDE_ANY: | |
798 | return "include-any"; | |
799 | case AFFINITY_FILTER_INCLUDE_ALL: | |
800 | return "include-all"; | |
801 | default: | |
802 | return "unknown"; | |
803 | } | |
804 | } | |
805 | ||
806 | /** | |
807 | * Sets a candidate path affinity filter constraint. | |
808 | * | |
809 | * @param candidate The candidate path of which the constraint should be changed | |
810 | * @param type The affinity constraint type to set | |
811 | * @param filter The bitmask filter of the constraint | |
812 | */ | |
813 | void srte_candidate_set_affinity_filter(struct srte_candidate *candidate, | |
814 | enum affinity_filter_type type, | |
815 | uint32_t filter) | |
816 | { | |
817 | struct srte_policy *policy = candidate->policy; | |
818 | char endpoint[46]; | |
819 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
820 | ||
821 | assert(type > AFFINITY_FILTER_UNDEFINED); | |
822 | assert(type <= MAX_AFFINITY_FILTER_TYPE); | |
823 | SET_FLAG(candidate->flags, filter_type_to_flag(type)); | |
824 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
825 | candidate->affinity_filters[type - 1] = filter; | |
826 | zlog_debug( | |
827 | "SR-TE(%s, %u): candidate %s affinity filter %s set to 0x%08x", | |
828 | endpoint, policy->color, candidate->name, | |
829 | filter_type_name(type), filter); | |
830 | } | |
831 | ||
832 | /** | |
833 | * Removes a candidate path affinity filter constraint. | |
834 | * | |
835 | * @param candidate The candidate path from which the constraint should be | |
836 | * removed | |
837 | * @param type The affinity constraint type to remove | |
838 | */ | |
839 | void srte_candidate_unset_affinity_filter(struct srte_candidate *candidate, | |
840 | enum affinity_filter_type type) | |
841 | { | |
842 | struct srte_policy *policy = candidate->policy; | |
843 | char endpoint[46]; | |
844 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
845 | ||
846 | assert(type > AFFINITY_FILTER_UNDEFINED); | |
847 | assert(type <= MAX_AFFINITY_FILTER_TYPE); | |
848 | UNSET_FLAG(candidate->flags, filter_type_to_flag(type)); | |
849 | SET_FLAG(candidate->flags, F_CANDIDATE_MODIFIED); | |
850 | candidate->affinity_filters[type - 1] = 0; | |
851 | zlog_debug("SR-TE(%s, %u): candidate %s affinity filter %s unset", | |
852 | endpoint, policy->color, candidate->name, | |
853 | filter_type_name(type)); | |
854 | } | |
855 | ||
856 | /** | |
857 | * Searches for a candidate path of the given policy. | |
858 | * | |
859 | * @param policy The policy to search for candidate path | |
860 | * @param preference The preference of the candidate path you are looking for | |
861 | * @return The candidate path if found, NULL otherwise | |
862 | */ | |
863 | struct srte_candidate *srte_candidate_find(struct srte_policy *policy, | |
864 | uint32_t preference) | |
865 | { | |
866 | struct srte_candidate search; | |
867 | ||
868 | search.preference = preference; | |
869 | return RB_FIND(srte_candidate_head, &policy->candidate_paths, &search); | |
870 | } | |
871 | ||
872 | /** | |
873 | * Searches for a an entry of a given segment list. | |
874 | * | |
875 | * @param segment_list The segment list to search for the entry | |
876 | * @param index The index of the entry you are looking for | |
877 | * @return The segment list entry if found, NULL otherwise. | |
878 | */ | |
879 | struct srte_segment_entry * | |
880 | srte_segment_entry_find(struct srte_segment_list *segment_list, uint32_t index) | |
881 | { | |
882 | struct srte_segment_entry search; | |
883 | ||
884 | search.index = index; | |
885 | return RB_FIND(srte_segment_entry_head, &segment_list->segments, | |
886 | &search); | |
887 | } | |
888 | ||
889 | /** | |
890 | * Updates a candidate status. | |
891 | * | |
892 | * @param candidate The candidate of which the status should be updated | |
893 | * @param status The new candidate path status | |
894 | */ | |
895 | void srte_candidate_status_update(struct srte_candidate *candidate, int status) | |
896 | { | |
897 | struct srte_policy *policy = candidate->policy; | |
898 | char endpoint[46]; | |
899 | ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint)); | |
900 | zlog_debug("SR-TE(%s, %u): zebra updated status to %d", endpoint, | |
901 | policy->color, status); | |
902 | switch (status) { | |
903 | case ZEBRA_SR_POLICY_DOWN: | |
904 | switch (policy->status) { | |
905 | /* If the policy is GOING_UP, and zebra faild | |
906 | to install it, we wait for zebra to retry */ | |
907 | /* TODO: Add some timeout after which we would | |
908 | get is back to DOWN and remove the | |
909 | policy */ | |
910 | case SRTE_POLICY_STATUS_GOING_UP: | |
911 | case SRTE_POLICY_STATUS_DOWN: | |
912 | return; | |
913 | default: | |
914 | zlog_debug("SR-TE(%s, %u): policy is DOWN", endpoint, | |
915 | policy->color); | |
916 | policy->status = SRTE_POLICY_STATUS_DOWN; | |
917 | break; | |
918 | } | |
919 | break; | |
920 | case ZEBRA_SR_POLICY_UP: | |
921 | switch (policy->status) { | |
922 | case SRTE_POLICY_STATUS_UP: | |
923 | return; | |
924 | default: | |
925 | zlog_debug("SR-TE(%s, %u): policy is UP", endpoint, | |
926 | policy->color); | |
927 | policy->status = SRTE_POLICY_STATUS_UP; | |
928 | break; | |
929 | } | |
930 | break; | |
931 | } | |
932 | ||
933 | trigger_pathd_candidate_updated(candidate); | |
934 | } | |
935 | ||
936 | /** | |
937 | * Flags the segment lists from give originator for removal. | |
938 | * | |
939 | * The function srte_apply_changes must be called afterward for | |
940 | * the segment list to be removed. | |
941 | * | |
942 | * @param originator The originator tag of the segment list to be marked | |
943 | * @param force If the unset should be forced regardless of the originator | |
944 | */ | |
945 | void srte_candidate_unset_segment_list(const char *originator, bool force) | |
946 | { | |
947 | if (originator == NULL) { | |
948 | zlog_warn( | |
949 | "Cannot unset segment list because originator is NULL"); | |
950 | return; | |
951 | } | |
952 | ||
953 | zlog_debug("Unset segment lists for originator %s", originator); | |
954 | ||
955 | /* Iterate the policies, then iterate each policy's candidate path | |
956 | * to check the candidate path's segment list originator */ | |
957 | struct srte_policy *policy; | |
958 | RB_FOREACH (policy, srte_policy_head, &srte_policies) { | |
959 | zlog_debug("Unset segment lists checking policy %s", | |
960 | policy->name); | |
961 | struct srte_candidate *candidate; | |
962 | RB_FOREACH (candidate, srte_candidate_head, | |
963 | &policy->candidate_paths) { | |
964 | zlog_debug("Unset segment lists checking candidate %s", | |
965 | candidate->name); | |
966 | if (candidate->lsp == NULL) { | |
967 | continue; | |
968 | } | |
969 | ||
970 | /* The candidate->lsp->segment_list is operational data, | |
971 | * configured by the PCE. We dont want to modify the | |
972 | * candidate->segment_list, | |
973 | * which is configuration data. */ | |
974 | struct srte_segment_list *segment_list = | |
975 | candidate->lsp->segment_list; | |
976 | if (segment_list == NULL) { | |
977 | continue; | |
978 | } | |
979 | ||
980 | if (segment_list->protocol_origin | |
981 | == SRTE_ORIGIN_LOCAL) { | |
982 | zlog_warn( | |
983 | "Cannot unset segment list %s because it " | |
984 | "was created locally", | |
985 | segment_list->name); | |
986 | continue; | |
987 | } | |
988 | ||
989 | /* In the case of last pce,we force the unset | |
990 | * because we don't have pce by prefix (TODO) is all | |
991 | * 'global' */ | |
992 | if (strncmp(segment_list->originator, originator, | |
993 | sizeof(segment_list->originator)) | |
994 | == 0 | |
995 | || force) { | |
996 | zlog_debug("Unset segment list %s", | |
997 | segment_list->name); | |
998 | SET_FLAG(segment_list->flags, | |
999 | F_SEGMENT_LIST_DELETED); | |
1000 | SET_FLAG(candidate->flags, | |
1001 | F_CANDIDATE_MODIFIED); | |
1002 | candidate->lsp->segment_list = NULL; | |
1003 | } | |
1004 | } | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | /** | |
1009 | * Gives a string representation of given protocol origin enum. | |
1010 | * | |
1011 | * @param origin The enum you want a string representation of | |
1012 | * @return The string representation of given enum | |
1013 | */ | |
1014 | const char *srte_origin2str(enum srte_protocol_origin origin) | |
1015 | { | |
1016 | switch (origin) { | |
1017 | case SRTE_ORIGIN_PCEP: | |
1018 | return "PCEP"; | |
1019 | case SRTE_ORIGIN_BGP: | |
1020 | return "BGP"; | |
1021 | case SRTE_ORIGIN_LOCAL: | |
1022 | return "Local"; | |
1023 | default: | |
1024 | return "Unknown"; | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | void trigger_pathd_candidate_created(struct srte_candidate *candidate) | |
1029 | { | |
1030 | /* The hook is called asynchronously to let the PCEP module | |
1031 | time to send a response to the PCE before receiving any updates from | |
1032 | pathd. In addition, a minimum amount of time need to pass before | |
1033 | the hook is called to prevent the hook to be called multiple times | |
1034 | from changing the candidate by hand with the console */ | |
1035 | if (candidate->hook_timer != NULL) | |
1036 | return; | |
1037 | thread_add_timer(master, trigger_pathd_candidate_created_timer, | |
1038 | (void *)candidate, HOOK_DELAY, &candidate->hook_timer); | |
1039 | } | |
1040 | ||
1041 | int trigger_pathd_candidate_created_timer(struct thread *thread) | |
1042 | { | |
1043 | struct srte_candidate *candidate = THREAD_ARG(thread); | |
1044 | candidate->hook_timer = NULL; | |
1045 | return hook_call(pathd_candidate_created, candidate); | |
1046 | } | |
1047 | ||
1048 | void trigger_pathd_candidate_updated(struct srte_candidate *candidate) | |
1049 | { | |
1050 | /* The hook is called asynchronously to let the PCEP module | |
1051 | time to send a response to the PCE before receiving any updates from | |
1052 | pathd. In addition, a minimum amount of time need to pass before | |
1053 | the hook is called to prevent the hook to be called multiple times | |
1054 | from changing the candidate by hand with the console */ | |
1055 | if (candidate->hook_timer != NULL) | |
1056 | return; | |
1057 | thread_add_timer(master, trigger_pathd_candidate_updated_timer, | |
1058 | (void *)candidate, HOOK_DELAY, &candidate->hook_timer); | |
1059 | } | |
1060 | ||
1061 | int trigger_pathd_candidate_updated_timer(struct thread *thread) | |
1062 | { | |
1063 | struct srte_candidate *candidate = THREAD_ARG(thread); | |
1064 | candidate->hook_timer = NULL; | |
1065 | return hook_call(pathd_candidate_updated, candidate); | |
1066 | } | |
1067 | ||
1068 | void trigger_pathd_candidate_removed(struct srte_candidate *candidate) | |
1069 | { | |
1070 | /* The hook needs to be call synchronously, otherwise the candidate | |
1071 | path will be already deleted when the handler is called */ | |
1072 | if (candidate->hook_timer != NULL) { | |
1073 | thread_cancel(&candidate->hook_timer); | |
1074 | candidate->hook_timer = NULL; | |
1075 | } | |
1076 | hook_call(pathd_candidate_removed, candidate); | |
1077 | } | |
1078 | ||
1079 | const char *srte_candidate_metric_name(enum srte_candidate_metric_type type) | |
1080 | { | |
1081 | switch (type) { | |
1082 | case SRTE_CANDIDATE_METRIC_TYPE_IGP: | |
1083 | return "IGP"; | |
1084 | case SRTE_CANDIDATE_METRIC_TYPE_TE: | |
1085 | return "TE"; | |
1086 | case SRTE_CANDIDATE_METRIC_TYPE_HC: | |
1087 | return "HC"; | |
1088 | case SRTE_CANDIDATE_METRIC_TYPE_ABC: | |
1089 | return "ABC"; | |
1090 | case SRTE_CANDIDATE_METRIC_TYPE_LMLL: | |
1091 | return "LMLL"; | |
1092 | case SRTE_CANDIDATE_METRIC_TYPE_CIGP: | |
1093 | return "CIGP"; | |
1094 | case SRTE_CANDIDATE_METRIC_TYPE_CTE: | |
1095 | return "CTE"; | |
1096 | case SRTE_CANDIDATE_METRIC_TYPE_PIGP: | |
1097 | return "PIGP"; | |
1098 | case SRTE_CANDIDATE_METRIC_TYPE_PTE: | |
1099 | return "PTE"; | |
1100 | case SRTE_CANDIDATE_METRIC_TYPE_PHC: | |
1101 | return "PHC"; | |
1102 | case SRTE_CANDIDATE_METRIC_TYPE_MSD: | |
1103 | return "MSD"; | |
1104 | case SRTE_CANDIDATE_METRIC_TYPE_PD: | |
1105 | return "PD"; | |
1106 | case SRTE_CANDIDATE_METRIC_TYPE_PDV: | |
1107 | return "PDV"; | |
1108 | case SRTE_CANDIDATE_METRIC_TYPE_PL: | |
1109 | return "PL"; | |
1110 | case SRTE_CANDIDATE_METRIC_TYPE_PPD: | |
1111 | return "PPD"; | |
1112 | case SRTE_CANDIDATE_METRIC_TYPE_PPDV: | |
1113 | return "PPDV"; | |
1114 | case SRTE_CANDIDATE_METRIC_TYPE_PPL: | |
1115 | return "PPL"; | |
1116 | case SRTE_CANDIDATE_METRIC_TYPE_NAP: | |
1117 | return "NAP"; | |
1118 | case SRTE_CANDIDATE_METRIC_TYPE_NLP: | |
1119 | return "NLP"; | |
1120 | case SRTE_CANDIDATE_METRIC_TYPE_DC: | |
1121 | return "DC"; | |
1122 | case SRTE_CANDIDATE_METRIC_TYPE_BNC: | |
1123 | return "BNC"; | |
1124 | default: | |
1125 | return "UNKNOWN"; | |
1126 | } | |
1127 | } |