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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
851140a7 S |
2 | /* |
3 | * Zebra GR related helper functions. | |
4 | * | |
5 | * Portions: | |
6 | * Copyright (C) 2019 VMware, Inc. | |
7 | * et al. | |
851140a7 S |
8 | */ |
9 | ||
10 | #include <zebra.h> | |
11 | #include <libgen.h> | |
12 | ||
13 | #include "lib/prefix.h" | |
14 | #include "lib/command.h" | |
15 | #include "lib/if.h" | |
16 | #include "lib/thread.h" | |
17 | #include "lib/stream.h" | |
18 | #include "lib/memory.h" | |
19 | #include "lib/table.h" | |
20 | #include "lib/network.h" | |
21 | #include "lib/sockunion.h" | |
22 | #include "lib/log.h" | |
23 | #include "lib/zclient.h" | |
24 | #include "lib/privs.h" | |
25 | #include "lib/network.h" | |
26 | #include "lib/buffer.h" | |
27 | #include "lib/nexthop.h" | |
28 | #include "lib/vrf.h" | |
29 | #include "lib/libfrr.h" | |
30 | #include "lib/sockopt.h" | |
31 | ||
32 | #include "zebra/zebra_router.h" | |
33 | #include "zebra/debug.h" | |
34 | #include "zebra/zapi_msg.h" | |
35 | ||
c0ce4875 | 36 | DEFINE_MTYPE_STATIC(ZEBRA, ZEBRA_GR, "GR"); |
851140a7 S |
37 | |
38 | /* | |
39 | * Forward declaration. | |
40 | */ | |
41 | static struct zserv *zebra_gr_find_stale_client(struct zserv *client); | |
cc9f21da | 42 | static void zebra_gr_route_stale_delete_timer_expiry(struct thread *thread); |
b9e6727a S |
43 | static int32_t zebra_gr_delete_stale_routes(struct client_gr_info *info); |
44 | static void zebra_gr_process_client_stale_routes(struct zserv *client, | |
45 | vrf_id_t vrf_id); | |
851140a7 S |
46 | |
47 | /* | |
48 | * Debug macros. | |
49 | */ | |
50 | #define LOG_GR(msg, ...) \ | |
51 | do { \ | |
52 | if (IS_ZEBRA_DEBUG_EVENT) \ | |
53 | zlog_debug(msg, ##__VA_ARGS__); \ | |
54 | } while (0) | |
55 | ||
56 | ||
57 | /* | |
58 | * Client connection functions | |
59 | */ | |
60 | ||
b9e6727a S |
61 | /* |
62 | * Function to clean all the stale clients, | |
63 | * function will also clean up all per instance | |
64 | * capabilities that are exchanged. | |
65 | */ | |
66 | void zebra_gr_stale_client_cleanup(struct list *client_list) | |
67 | { | |
68 | struct listnode *node, *nnode; | |
69 | struct zserv *s_client = NULL; | |
70 | struct client_gr_info *info, *ninfo; | |
71 | ||
72 | /* Find the stale client */ | |
73 | for (ALL_LIST_ELEMENTS(client_list, node, nnode, s_client)) { | |
74 | ||
75 | LOG_GR("%s: Stale client %s is being deleted", __func__, | |
76 | zebra_route_string(s_client->proto)); | |
77 | ||
78 | TAILQ_FOREACH_SAFE (info, &s_client->gr_info_queue, gr_info, | |
79 | ninfo) { | |
80 | ||
81 | /* Cancel the stale timer */ | |
82 | if (info->t_stale_removal != NULL) { | |
83 | THREAD_OFF(info->t_stale_removal); | |
84 | info->t_stale_removal = NULL; | |
85 | /* Process the stale routes */ | |
86 | thread_execute( | |
87 | zrouter.master, | |
88 | zebra_gr_route_stale_delete_timer_expiry, | |
89 | info, 1); | |
90 | } | |
91 | } | |
92 | } | |
93 | } | |
94 | ||
95 | /* | |
96 | * A helper function to create client info. | |
97 | */ | |
98 | static struct client_gr_info *zebra_gr_client_info_create(struct zserv *client) | |
99 | { | |
100 | struct client_gr_info *info; | |
101 | ||
c0ce4875 | 102 | info = XCALLOC(MTYPE_ZEBRA_GR, sizeof(struct client_gr_info)); |
b9e6727a S |
103 | |
104 | TAILQ_INSERT_TAIL(&(client->gr_info_queue), info, gr_info); | |
105 | return info; | |
106 | } | |
107 | ||
108 | /* | |
98cb53f9 | 109 | * A helper function to delete and destroy client info. |
b9e6727a S |
110 | */ |
111 | static void zebra_gr_client_info_delte(struct zserv *client, | |
112 | struct client_gr_info *info) | |
113 | { | |
114 | TAILQ_REMOVE(&(client->gr_info_queue), info, gr_info); | |
115 | ||
116 | THREAD_OFF(info->t_stale_removal); | |
117 | ||
c0ce4875 | 118 | XFREE(MTYPE_ZEBRA_GR, info->current_prefix); |
b9e6727a S |
119 | |
120 | LOG_GR("%s: Instance info is being deleted for client %s", __func__, | |
121 | zebra_route_string(client->proto)); | |
122 | ||
123 | /* Delete all the stale routes. */ | |
cd7108ba | 124 | info->do_delete = true; |
b9e6727a S |
125 | zebra_gr_delete_stale_routes(info); |
126 | ||
c0ce4875 | 127 | XFREE(MTYPE_ZEBRA_GR, info); |
b9e6727a S |
128 | } |
129 | ||
851140a7 S |
130 | /* |
131 | * Function to handle client when it disconnect. | |
132 | */ | |
b9e6727a | 133 | int32_t zebra_gr_client_disconnect(struct zserv *client) |
851140a7 S |
134 | { |
135 | struct zserv *stale_client; | |
136 | struct timeval tv; | |
137 | struct client_gr_info *info = NULL; | |
138 | ||
139 | /* Find the stale client */ | |
140 | stale_client = zebra_gr_find_stale_client(client); | |
141 | ||
142 | /* | |
143 | * We should never be here. | |
144 | */ | |
145 | if (stale_client) { | |
146 | LOG_GR("%s: Stale client %s exist, we should not be here!", | |
147 | __func__, zebra_route_string(client->proto)); | |
148 | assert(0); | |
149 | } | |
150 | ||
151 | client->restart_time = monotime(&tv); | |
152 | ||
98cb53f9 | 153 | /* For all the GR instance start the stale removal timer. */ |
851140a7 S |
154 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { |
155 | if (ZEBRA_CLIENT_GR_ENABLED(info->capabilities) | |
156 | && (info->t_stale_removal == NULL)) { | |
157 | thread_add_timer( | |
158 | zrouter.master, | |
159 | zebra_gr_route_stale_delete_timer_expiry, info, | |
160 | info->stale_removal_time, | |
161 | &info->t_stale_removal); | |
162 | info->current_afi = AFI_IP; | |
163 | info->stale_client_ptr = client; | |
164 | info->stale_client = true; | |
165 | LOG_GR("%s: Client %s Stale timer update to %d", | |
166 | __func__, zebra_route_string(client->proto), | |
167 | info->stale_removal_time); | |
168 | } | |
169 | } | |
170 | ||
171 | listnode_add(zrouter.stale_client_list, client); | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
b9e6727a S |
176 | /* |
177 | * Function to delete stale client | |
178 | */ | |
179 | static void zebra_gr_delete_stale_client(struct client_gr_info *info) | |
180 | { | |
181 | struct client_gr_info *bgp_info; | |
182 | struct zserv *s_client = NULL; | |
183 | ||
184 | s_client = info->stale_client_ptr; | |
185 | ||
186 | if (!s_client || !info->stale_client) | |
187 | return; | |
188 | ||
189 | /* | |
190 | * If there are bgp instances with the stale delete timer pending | |
191 | * then stale client is not deleted | |
192 | */ | |
193 | if ((s_client->gr_instance_count > 0) && info->gr_enable) | |
194 | s_client->gr_instance_count--; | |
195 | ||
196 | TAILQ_REMOVE(&(s_client->gr_info_queue), info, gr_info); | |
197 | ||
198 | LOG_GR("%s: Client %s gr count %d", __func__, | |
199 | zebra_route_string(s_client->proto), | |
200 | s_client->gr_instance_count); | |
201 | ||
202 | TAILQ_FOREACH (bgp_info, &s_client->gr_info_queue, gr_info) { | |
203 | if (bgp_info->t_stale_removal != NULL) | |
204 | return; | |
205 | } | |
206 | ||
207 | LOG_GR("%s: Client %s is being deleted", __func__, | |
208 | zebra_route_string(s_client->proto)); | |
209 | ||
210 | TAILQ_INIT(&(s_client->gr_info_queue)); | |
211 | listnode_delete(zrouter.stale_client_list, s_client); | |
212 | if (info->stale_client) | |
c0ce4875 MS |
213 | zserv_client_delete(s_client); |
214 | XFREE(MTYPE_ZEBRA_GR, info); | |
b9e6727a S |
215 | } |
216 | ||
851140a7 S |
217 | /* |
218 | * Function to find stale client. | |
219 | */ | |
220 | static struct zserv *zebra_gr_find_stale_client(struct zserv *client) | |
221 | { | |
222 | struct listnode *node, *nnode; | |
223 | struct zserv *stale_client; | |
224 | ||
225 | /* Find the stale client */ | |
226 | for (ALL_LIST_ELEMENTS(zrouter.stale_client_list, node, nnode, | |
227 | stale_client)) { | |
228 | if (client->proto == stale_client->proto | |
229 | && client->instance == stale_client->instance) { | |
230 | return stale_client; | |
231 | } | |
232 | } | |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
237 | /* | |
238 | * Function to handle reconnect of client post restart. | |
239 | */ | |
240 | void zebra_gr_client_reconnect(struct zserv *client) | |
241 | { | |
242 | struct listnode *node, *nnode; | |
243 | struct zserv *old_client = NULL; | |
244 | struct client_gr_info *info = NULL; | |
245 | ||
246 | /* Find the stale client */ | |
247 | for (ALL_LIST_ELEMENTS(zrouter.stale_client_list, node, nnode, | |
248 | old_client)) { | |
249 | if (client->proto == old_client->proto | |
250 | && client->instance == old_client->instance) | |
251 | break; | |
252 | } | |
253 | ||
254 | /* Copy the timers */ | |
6f4aee61 S |
255 | if (!old_client) |
256 | return; | |
851140a7 | 257 | |
6f4aee61 S |
258 | client->gr_instance_count = old_client->gr_instance_count; |
259 | client->restart_time = old_client->restart_time; | |
260 | ||
261 | LOG_GR("%s : old client %s, gr_instance_count %d", __func__, | |
262 | zebra_route_string(old_client->proto), | |
263 | old_client->gr_instance_count); | |
264 | ||
265 | if (TAILQ_FIRST(&old_client->gr_info_queue)) { | |
266 | TAILQ_CONCAT(&client->gr_info_queue, &old_client->gr_info_queue, | |
267 | gr_info); | |
268 | TAILQ_INIT(&old_client->gr_info_queue); | |
269 | } | |
851140a7 | 270 | |
6f4aee61 S |
271 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { |
272 | info->stale_client_ptr = client; | |
273 | info->stale_client = false; | |
851140a7 | 274 | } |
6f4aee61 S |
275 | |
276 | /* Delete the stale client */ | |
277 | listnode_delete(zrouter.stale_client_list, old_client); | |
278 | /* Delete old client */ | |
c0ce4875 | 279 | zserv_client_delete(old_client); |
851140a7 S |
280 | } |
281 | ||
b9e6727a S |
282 | /* |
283 | * Functions to deal with capabilities | |
284 | */ | |
285 | ||
286 | /* | |
287 | * Update the graceful restart information | |
288 | * for the client instance. | |
98cb53f9 | 289 | * This function handles all the capabilities that are received. |
b9e6727a S |
290 | */ |
291 | static void zebra_client_update_info(struct zserv *client, struct zapi_cap *api) | |
292 | { | |
293 | struct client_gr_info *info = NULL; | |
294 | ||
295 | /* Find the bgp information for the specified vrf id */ | |
296 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { | |
297 | if (info->vrf_id == api->vrf_id) | |
298 | break; | |
299 | } | |
300 | ||
301 | ||
302 | /* | |
303 | * If the command is delete, then cancel the stale timer and | |
304 | * delete the bgp info | |
305 | */ | |
306 | switch (api->cap) { | |
307 | case ZEBRA_CLIENT_GR_DISABLE: | |
308 | if (!info) | |
309 | return; | |
310 | ||
311 | LOG_GR("%s: Client %s instance GR disabled count %d", __func__, | |
312 | zebra_route_string(client->proto), | |
313 | client->gr_instance_count); | |
314 | ||
315 | if ((info->gr_enable) && (client->gr_instance_count > 0)) | |
316 | client->gr_instance_count--; | |
317 | ||
318 | zebra_gr_client_info_delte(client, info); | |
319 | break; | |
320 | case ZEBRA_CLIENT_GR_CAPABILITIES: | |
321 | /* Allocate bgp info */ | |
322 | if (!info) | |
323 | info = zebra_gr_client_info_create(client); | |
324 | ||
98cb53f9 | 325 | /* Update other parameters */ |
b9e6727a S |
326 | if (!info->gr_enable) { |
327 | client->gr_instance_count++; | |
328 | ||
329 | LOG_GR("%s: Cient %s GR enabled count %d", __func__, | |
330 | zebra_route_string(client->proto), | |
331 | client->gr_instance_count); | |
332 | ||
333 | info->capabilities = api->cap; | |
334 | info->stale_removal_time = api->stale_removal_time; | |
335 | info->vrf_id = api->vrf_id; | |
336 | info->gr_enable = true; | |
337 | } | |
338 | break; | |
339 | case ZEBRA_CLIENT_RIB_STALE_TIME: | |
340 | LOG_GR("%s: Client %s stale time update event", __func__, | |
341 | zebra_route_string(client->proto)); | |
342 | ||
343 | /* Update the stale removal timer */ | |
344 | if (info && info->t_stale_removal == NULL) { | |
345 | ||
346 | LOG_GR("%s: Stale time: %d is now update to: %d", | |
347 | __func__, info->stale_removal_time, | |
348 | api->stale_removal_time); | |
349 | ||
350 | info->stale_removal_time = api->stale_removal_time; | |
351 | } | |
352 | ||
353 | break; | |
354 | case ZEBRA_CLIENT_ROUTE_UPDATE_COMPLETE: | |
355 | LOG_GR( | |
356 | "%s: Client %s route update complete for AFI %d, SAFI %d", | |
357 | __func__, zebra_route_string(client->proto), api->afi, | |
358 | api->safi); | |
359 | if (info) | |
360 | info->route_sync[api->afi][api->safi] = true; | |
361 | break; | |
362 | case ZEBRA_CLIENT_ROUTE_UPDATE_PENDING: | |
363 | LOG_GR("%s: Client %s route update pending for AFI %d, SAFI %d", | |
364 | __func__, zebra_route_string(client->proto), api->afi, | |
365 | api->safi); | |
366 | if (info) | |
367 | info->af_enabled[api->afi][api->safi] = true; | |
368 | break; | |
369 | } | |
370 | } | |
371 | ||
372 | /* | |
373 | * Handler for capabilities that are received from client. | |
374 | */ | |
375 | static void zebra_client_capabilities_handler(struct zserv *client, | |
376 | struct zapi_cap *api) | |
377 | { | |
378 | switch (api->cap) { | |
379 | case ZEBRA_CLIENT_GR_CAPABILITIES: | |
380 | case ZEBRA_CLIENT_ROUTE_UPDATE_PENDING: | |
381 | case ZEBRA_CLIENT_GR_DISABLE: | |
382 | case ZEBRA_CLIENT_RIB_STALE_TIME: | |
383 | /* | |
384 | * For all the cases we need to update the client info. | |
385 | */ | |
386 | zebra_client_update_info(client, api); | |
387 | break; | |
388 | case ZEBRA_CLIENT_ROUTE_UPDATE_COMPLETE: | |
389 | /* | |
390 | * After client info has been updated delete all | |
391 | * stale routes | |
392 | */ | |
393 | zebra_client_update_info(client, api); | |
394 | zebra_gr_process_client_stale_routes(client, api->vrf_id); | |
395 | break; | |
396 | } | |
397 | } | |
398 | ||
399 | /* | |
400 | * Function to decode and call appropriate functions | |
401 | * to handle client capabilities. | |
402 | */ | |
403 | void zread_client_capabilities(ZAPI_HANDLER_ARGS) | |
404 | { | |
405 | struct zapi_cap api; | |
406 | struct stream *s; | |
407 | ||
408 | s = msg; | |
409 | ||
410 | if (zapi_capabilities_decode(s, &api)) { | |
411 | LOG_GR("%s: Error in reading capabilities for client %s", | |
412 | __func__, zebra_route_string(client->proto)); | |
413 | return; | |
414 | } | |
415 | ||
6f4aee61 S |
416 | /* GR only for dynamic clients */ |
417 | if (client->proto <= ZEBRA_ROUTE_CONNECT) { | |
418 | LOG_GR("%s: GR capabilities for client %s not supported", | |
419 | __func__, zebra_route_string(client->proto)); | |
420 | return; | |
421 | } | |
b9e6727a S |
422 | /* Call the capabilities handler */ |
423 | zebra_client_capabilities_handler(client, &api); | |
424 | } | |
425 | ||
426 | ||
427 | /* | |
428 | * Stale route handling | |
429 | */ | |
430 | ||
431 | /* | |
432 | * Delete all the stale routes that have not been refreshed | |
433 | * post restart. | |
434 | */ | |
cc9f21da | 435 | static void zebra_gr_route_stale_delete_timer_expiry(struct thread *thread) |
b9e6727a S |
436 | { |
437 | struct client_gr_info *info; | |
438 | int32_t cnt = 0; | |
439 | struct zserv *client; | |
440 | ||
441 | info = THREAD_ARG(thread); | |
442 | info->t_stale_removal = NULL; | |
443 | client = (struct zserv *)info->stale_client_ptr; | |
444 | ||
445 | /* Set the flag to indicate all stale route deletion */ | |
446 | if (thread->u.val == 1) | |
cd7108ba | 447 | info->do_delete = true; |
b9e6727a S |
448 | |
449 | cnt = zebra_gr_delete_stale_routes(info); | |
450 | ||
98cb53f9 | 451 | /* Restart the timer */ |
b9e6727a S |
452 | if (cnt > 0) { |
453 | LOG_GR("%s: Client %s processed %d routes. Start timer again", | |
454 | __func__, zebra_route_string(client->proto), cnt); | |
455 | ||
456 | thread_add_timer(zrouter.master, | |
457 | zebra_gr_route_stale_delete_timer_expiry, info, | |
458 | ZEBRA_DEFAULT_STALE_UPDATE_DELAY, | |
459 | &info->t_stale_removal); | |
460 | } else { | |
461 | /* No routes to delete for the VRF */ | |
98cb53f9 | 462 | LOG_GR("%s: Client %s all stale routes processed", __func__, |
b9e6727a S |
463 | zebra_route_string(client->proto)); |
464 | ||
c0ce4875 | 465 | XFREE(MTYPE_ZEBRA_GR, info->current_prefix); |
b9e6727a S |
466 | info->current_afi = 0; |
467 | zebra_gr_delete_stale_client(info); | |
468 | } | |
b9e6727a S |
469 | } |
470 | ||
471 | ||
472 | /* | |
473 | * Function to process to check if route entry is stale | |
474 | * or has been updated. | |
475 | */ | |
476 | static void zebra_gr_process_route_entry(struct zserv *client, | |
477 | struct route_node *rn, | |
478 | struct route_entry *re) | |
479 | { | |
b9e6727a S |
480 | if ((client == NULL) || (rn == NULL) || (re == NULL)) |
481 | return; | |
482 | ||
483 | /* If the route is not refreshed after restart, delete the entry */ | |
484 | if (re->uptime < client->restart_time) { | |
2dbe669b DA |
485 | if (IS_ZEBRA_DEBUG_RIB) |
486 | zlog_debug("%s: Client %s stale route %pFX is deleted", | |
b9e6727a | 487 | __func__, zebra_route_string(client->proto), |
2dbe669b | 488 | &rn->p); |
b9e6727a S |
489 | rib_delnode(rn, re); |
490 | } | |
491 | } | |
851140a7 | 492 | |
b9e6727a S |
493 | /* |
494 | * This function walks through the route table for all vrf and deletes | |
495 | * the stale routes for the restarted client specified by the protocol | |
496 | * type | |
497 | */ | |
498 | static int32_t zebra_gr_delete_stale_route(struct client_gr_info *info, | |
499 | struct zebra_vrf *zvrf) | |
851140a7 | 500 | { |
b9e6727a S |
501 | struct route_node *rn, *curr; |
502 | struct route_entry *re; | |
503 | struct route_entry *next; | |
504 | struct route_table *table; | |
505 | int32_t n = 0; | |
b9e6727a S |
506 | afi_t afi, curr_afi; |
507 | uint8_t proto; | |
508 | uint16_t instance; | |
509 | struct zserv *s_client; | |
510 | ||
511 | if ((info == NULL) || (zvrf == NULL)) | |
512 | return -1; | |
513 | ||
514 | s_client = info->stale_client_ptr; | |
515 | if (s_client == NULL) { | |
516 | LOG_GR("%s: Stale client not present", __func__); | |
517 | return -1; | |
518 | } | |
519 | ||
520 | proto = s_client->proto; | |
521 | instance = s_client->instance; | |
522 | curr_afi = info->current_afi; | |
523 | ||
524 | LOG_GR("%s: Client %s stale routes are being deleted", __func__, | |
525 | zebra_route_string(proto)); | |
526 | ||
527 | /* Process routes for all AFI */ | |
528 | for (afi = curr_afi; afi < AFI_MAX; afi++) { | |
529 | table = zvrf->table[afi][SAFI_UNICAST]; | |
b9e6727a S |
530 | |
531 | if (table) { | |
532 | /* | |
533 | * If the current prefix is NULL then get the first | |
534 | * route entry in the table | |
535 | */ | |
a093ad85 | 536 | if (info->current_prefix == NULL) { |
b9e6727a S |
537 | rn = route_top(table); |
538 | if (rn == NULL) | |
539 | continue; | |
b9e6727a | 540 | curr = rn; |
b9e6727a S |
541 | } else |
542 | /* Get the next route entry */ | |
a093ad85 QY |
543 | curr = route_table_get_next( |
544 | table, info->current_prefix); | |
b9e6727a S |
545 | |
546 | for (rn = curr; rn; rn = srcdest_route_next(rn)) { | |
547 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
548 | if (CHECK_FLAG(re->status, | |
549 | ROUTE_ENTRY_REMOVED)) | |
550 | continue; | |
551 | /* If the route refresh is received | |
552 | * after restart then do not delete | |
553 | * the route | |
554 | */ | |
555 | if (re->type == proto | |
556 | && re->instance == instance) { | |
557 | zebra_gr_process_route_entry( | |
558 | s_client, rn, re); | |
559 | n++; | |
560 | } | |
561 | ||
562 | /* If the max route count is reached | |
563 | * then timer thread will be restarted | |
564 | * Store the current prefix and afi | |
565 | */ | |
566 | if ((n >= ZEBRA_MAX_STALE_ROUTE_COUNT) | |
cd7108ba | 567 | && (info->do_delete == false)) { |
b9e6727a | 568 | info->current_afi = afi; |
a093ad85 | 569 | info->current_prefix = XCALLOC( |
c0ce4875 | 570 | MTYPE_ZEBRA_GR, |
a093ad85 QY |
571 | sizeof(struct prefix)); |
572 | prefix_copy( | |
573 | info->current_prefix, | |
574 | &rn->p); | |
b9e6727a S |
575 | return n; |
576 | } | |
577 | } | |
578 | } | |
579 | } | |
580 | /* | |
581 | * Reset the current prefix to indicate processing completion | |
582 | * of the current AFI | |
583 | */ | |
c0ce4875 | 584 | XFREE(MTYPE_ZEBRA_GR, info->current_prefix); |
b9e6727a | 585 | } |
851140a7 S |
586 | return 0; |
587 | } | |
b9e6727a S |
588 | |
589 | /* | |
590 | * Delete the stale routes when client is restarted and routes are not | |
591 | * refreshed within the stale timeout | |
592 | */ | |
593 | static int32_t zebra_gr_delete_stale_routes(struct client_gr_info *info) | |
594 | { | |
595 | struct vrf *vrf; | |
596 | struct zebra_vrf *zvrf; | |
597 | uint64_t cnt = 0; | |
598 | ||
599 | if (info == NULL) | |
600 | return -1; | |
601 | ||
602 | /* Get the current VRF */ | |
603 | vrf = vrf_lookup_by_id(info->vrf_id); | |
604 | if (vrf == NULL) { | |
605 | LOG_GR("%s: Invalid VRF %d", __func__, info->vrf_id); | |
606 | return -1; | |
607 | } | |
608 | ||
609 | zvrf = vrf->info; | |
610 | if (zvrf == NULL) { | |
611 | LOG_GR("%s: Invalid VRF entry %d", __func__, info->vrf_id); | |
612 | return -1; | |
613 | } | |
614 | ||
615 | cnt = zebra_gr_delete_stale_route(info, zvrf); | |
616 | return cnt; | |
617 | } | |
618 | ||
619 | /* | |
620 | * This function checks if route update for all AFI, SAFI is completed | |
621 | * and cancels the stale timer | |
622 | */ | |
623 | static void zebra_gr_process_client_stale_routes(struct zserv *client, | |
624 | vrf_id_t vrf_id) | |
625 | { | |
626 | struct client_gr_info *info = NULL; | |
627 | afi_t afi; | |
628 | safi_t safi; | |
629 | ||
630 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { | |
631 | if (info->vrf_id == vrf_id) | |
632 | break; | |
633 | } | |
634 | ||
635 | if (info == NULL) | |
636 | return; | |
637 | ||
638 | /* Check if route update completed for all AFI, SAFI */ | |
df8d723c DA |
639 | FOREACH_AFI_SAFI_NSF (afi, safi) { |
640 | if (info->af_enabled[afi][safi]) { | |
641 | if (!info->route_sync[afi][safi]) { | |
642 | LOG_GR("%s: Client %s route update not completed for AFI %d, SAFI %d", | |
643 | __func__, | |
644 | zebra_route_string(client->proto), afi, | |
645 | safi); | |
646 | return; | |
b9e6727a S |
647 | } |
648 | } | |
df8d723c | 649 | } |
b9e6727a S |
650 | |
651 | /* | |
652 | * Route update completed for all AFI, SAFI | |
653 | * Cancel the stale timer and process the routes | |
654 | */ | |
655 | if (info->t_stale_removal) { | |
98cb53f9 | 656 | LOG_GR("%s: Client %s canceled stale delete timer vrf %d", |
b9e6727a S |
657 | __func__, zebra_route_string(client->proto), |
658 | info->vrf_id); | |
659 | THREAD_OFF(info->t_stale_removal); | |
660 | thread_execute(zrouter.master, | |
661 | zebra_gr_route_stale_delete_timer_expiry, info, | |
662 | 0); | |
663 | } | |
664 | } |