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851140a7 S |
1 | /* |
2 | * Zebra GR related helper functions. | |
3 | * | |
4 | * Portions: | |
5 | * Copyright (C) 2019 VMware, Inc. | |
6 | * et al. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | #include <libgen.h> | |
25 | ||
26 | #include "lib/prefix.h" | |
27 | #include "lib/command.h" | |
28 | #include "lib/if.h" | |
29 | #include "lib/thread.h" | |
30 | #include "lib/stream.h" | |
31 | #include "lib/memory.h" | |
32 | #include "lib/table.h" | |
33 | #include "lib/network.h" | |
34 | #include "lib/sockunion.h" | |
35 | #include "lib/log.h" | |
36 | #include "lib/zclient.h" | |
37 | #include "lib/privs.h" | |
38 | #include "lib/network.h" | |
39 | #include "lib/buffer.h" | |
40 | #include "lib/nexthop.h" | |
41 | #include "lib/vrf.h" | |
42 | #include "lib/libfrr.h" | |
43 | #include "lib/sockopt.h" | |
44 | ||
45 | #include "zebra/zebra_router.h" | |
46 | #include "zebra/debug.h" | |
47 | #include "zebra/zapi_msg.h" | |
48 | ||
c0ce4875 | 49 | DEFINE_MTYPE_STATIC(ZEBRA, ZEBRA_GR, "GR"); |
851140a7 S |
50 | |
51 | /* | |
52 | * Forward declaration. | |
53 | */ | |
54 | static struct zserv *zebra_gr_find_stale_client(struct zserv *client); | |
cc9f21da | 55 | static void zebra_gr_route_stale_delete_timer_expiry(struct thread *thread); |
b9e6727a S |
56 | static int32_t zebra_gr_delete_stale_routes(struct client_gr_info *info); |
57 | static void zebra_gr_process_client_stale_routes(struct zserv *client, | |
58 | vrf_id_t vrf_id); | |
851140a7 S |
59 | |
60 | /* | |
61 | * Debug macros. | |
62 | */ | |
63 | #define LOG_GR(msg, ...) \ | |
64 | do { \ | |
65 | if (IS_ZEBRA_DEBUG_EVENT) \ | |
66 | zlog_debug(msg, ##__VA_ARGS__); \ | |
67 | } while (0) | |
68 | ||
69 | ||
70 | /* | |
71 | * Client connection functions | |
72 | */ | |
73 | ||
b9e6727a S |
74 | /* |
75 | * Function to clean all the stale clients, | |
76 | * function will also clean up all per instance | |
77 | * capabilities that are exchanged. | |
78 | */ | |
79 | void zebra_gr_stale_client_cleanup(struct list *client_list) | |
80 | { | |
81 | struct listnode *node, *nnode; | |
82 | struct zserv *s_client = NULL; | |
83 | struct client_gr_info *info, *ninfo; | |
84 | ||
85 | /* Find the stale client */ | |
86 | for (ALL_LIST_ELEMENTS(client_list, node, nnode, s_client)) { | |
87 | ||
88 | LOG_GR("%s: Stale client %s is being deleted", __func__, | |
89 | zebra_route_string(s_client->proto)); | |
90 | ||
91 | TAILQ_FOREACH_SAFE (info, &s_client->gr_info_queue, gr_info, | |
92 | ninfo) { | |
93 | ||
94 | /* Cancel the stale timer */ | |
95 | if (info->t_stale_removal != NULL) { | |
96 | THREAD_OFF(info->t_stale_removal); | |
97 | info->t_stale_removal = NULL; | |
98 | /* Process the stale routes */ | |
99 | thread_execute( | |
100 | zrouter.master, | |
101 | zebra_gr_route_stale_delete_timer_expiry, | |
102 | info, 1); | |
103 | } | |
104 | } | |
105 | } | |
106 | } | |
107 | ||
108 | /* | |
109 | * A helper function to create client info. | |
110 | */ | |
111 | static struct client_gr_info *zebra_gr_client_info_create(struct zserv *client) | |
112 | { | |
113 | struct client_gr_info *info; | |
114 | ||
c0ce4875 | 115 | info = XCALLOC(MTYPE_ZEBRA_GR, sizeof(struct client_gr_info)); |
b9e6727a S |
116 | |
117 | TAILQ_INSERT_TAIL(&(client->gr_info_queue), info, gr_info); | |
118 | return info; | |
119 | } | |
120 | ||
121 | /* | |
98cb53f9 | 122 | * A helper function to delete and destroy client info. |
b9e6727a S |
123 | */ |
124 | static void zebra_gr_client_info_delte(struct zserv *client, | |
125 | struct client_gr_info *info) | |
126 | { | |
127 | TAILQ_REMOVE(&(client->gr_info_queue), info, gr_info); | |
128 | ||
129 | THREAD_OFF(info->t_stale_removal); | |
130 | ||
c0ce4875 | 131 | XFREE(MTYPE_ZEBRA_GR, info->current_prefix); |
b9e6727a S |
132 | |
133 | LOG_GR("%s: Instance info is being deleted for client %s", __func__, | |
134 | zebra_route_string(client->proto)); | |
135 | ||
136 | /* Delete all the stale routes. */ | |
cd7108ba | 137 | info->do_delete = true; |
b9e6727a S |
138 | zebra_gr_delete_stale_routes(info); |
139 | ||
c0ce4875 | 140 | XFREE(MTYPE_ZEBRA_GR, info); |
b9e6727a S |
141 | } |
142 | ||
851140a7 S |
143 | /* |
144 | * Function to handle client when it disconnect. | |
145 | */ | |
b9e6727a | 146 | int32_t zebra_gr_client_disconnect(struct zserv *client) |
851140a7 S |
147 | { |
148 | struct zserv *stale_client; | |
149 | struct timeval tv; | |
150 | struct client_gr_info *info = NULL; | |
151 | ||
152 | /* Find the stale client */ | |
153 | stale_client = zebra_gr_find_stale_client(client); | |
154 | ||
155 | /* | |
156 | * We should never be here. | |
157 | */ | |
158 | if (stale_client) { | |
159 | LOG_GR("%s: Stale client %s exist, we should not be here!", | |
160 | __func__, zebra_route_string(client->proto)); | |
161 | assert(0); | |
162 | } | |
163 | ||
164 | client->restart_time = monotime(&tv); | |
165 | ||
98cb53f9 | 166 | /* For all the GR instance start the stale removal timer. */ |
851140a7 S |
167 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { |
168 | if (ZEBRA_CLIENT_GR_ENABLED(info->capabilities) | |
169 | && (info->t_stale_removal == NULL)) { | |
170 | thread_add_timer( | |
171 | zrouter.master, | |
172 | zebra_gr_route_stale_delete_timer_expiry, info, | |
173 | info->stale_removal_time, | |
174 | &info->t_stale_removal); | |
175 | info->current_afi = AFI_IP; | |
176 | info->stale_client_ptr = client; | |
177 | info->stale_client = true; | |
178 | LOG_GR("%s: Client %s Stale timer update to %d", | |
179 | __func__, zebra_route_string(client->proto), | |
180 | info->stale_removal_time); | |
181 | } | |
182 | } | |
183 | ||
184 | listnode_add(zrouter.stale_client_list, client); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
b9e6727a S |
189 | /* |
190 | * Function to delete stale client | |
191 | */ | |
192 | static void zebra_gr_delete_stale_client(struct client_gr_info *info) | |
193 | { | |
194 | struct client_gr_info *bgp_info; | |
195 | struct zserv *s_client = NULL; | |
196 | ||
197 | s_client = info->stale_client_ptr; | |
198 | ||
199 | if (!s_client || !info->stale_client) | |
200 | return; | |
201 | ||
202 | /* | |
203 | * If there are bgp instances with the stale delete timer pending | |
204 | * then stale client is not deleted | |
205 | */ | |
206 | if ((s_client->gr_instance_count > 0) && info->gr_enable) | |
207 | s_client->gr_instance_count--; | |
208 | ||
209 | TAILQ_REMOVE(&(s_client->gr_info_queue), info, gr_info); | |
210 | ||
211 | LOG_GR("%s: Client %s gr count %d", __func__, | |
212 | zebra_route_string(s_client->proto), | |
213 | s_client->gr_instance_count); | |
214 | ||
215 | TAILQ_FOREACH (bgp_info, &s_client->gr_info_queue, gr_info) { | |
216 | if (bgp_info->t_stale_removal != NULL) | |
217 | return; | |
218 | } | |
219 | ||
220 | LOG_GR("%s: Client %s is being deleted", __func__, | |
221 | zebra_route_string(s_client->proto)); | |
222 | ||
223 | TAILQ_INIT(&(s_client->gr_info_queue)); | |
224 | listnode_delete(zrouter.stale_client_list, s_client); | |
225 | if (info->stale_client) | |
c0ce4875 MS |
226 | zserv_client_delete(s_client); |
227 | XFREE(MTYPE_ZEBRA_GR, info); | |
b9e6727a S |
228 | } |
229 | ||
851140a7 S |
230 | /* |
231 | * Function to find stale client. | |
232 | */ | |
233 | static struct zserv *zebra_gr_find_stale_client(struct zserv *client) | |
234 | { | |
235 | struct listnode *node, *nnode; | |
236 | struct zserv *stale_client; | |
237 | ||
238 | /* Find the stale client */ | |
239 | for (ALL_LIST_ELEMENTS(zrouter.stale_client_list, node, nnode, | |
240 | stale_client)) { | |
241 | if (client->proto == stale_client->proto | |
242 | && client->instance == stale_client->instance) { | |
243 | return stale_client; | |
244 | } | |
245 | } | |
246 | ||
247 | return NULL; | |
248 | } | |
249 | ||
250 | /* | |
251 | * Function to handle reconnect of client post restart. | |
252 | */ | |
253 | void zebra_gr_client_reconnect(struct zserv *client) | |
254 | { | |
255 | struct listnode *node, *nnode; | |
256 | struct zserv *old_client = NULL; | |
257 | struct client_gr_info *info = NULL; | |
258 | ||
259 | /* Find the stale client */ | |
260 | for (ALL_LIST_ELEMENTS(zrouter.stale_client_list, node, nnode, | |
261 | old_client)) { | |
262 | if (client->proto == old_client->proto | |
263 | && client->instance == old_client->instance) | |
264 | break; | |
265 | } | |
266 | ||
267 | /* Copy the timers */ | |
6f4aee61 S |
268 | if (!old_client) |
269 | return; | |
851140a7 | 270 | |
6f4aee61 S |
271 | client->gr_instance_count = old_client->gr_instance_count; |
272 | client->restart_time = old_client->restart_time; | |
273 | ||
274 | LOG_GR("%s : old client %s, gr_instance_count %d", __func__, | |
275 | zebra_route_string(old_client->proto), | |
276 | old_client->gr_instance_count); | |
277 | ||
278 | if (TAILQ_FIRST(&old_client->gr_info_queue)) { | |
279 | TAILQ_CONCAT(&client->gr_info_queue, &old_client->gr_info_queue, | |
280 | gr_info); | |
281 | TAILQ_INIT(&old_client->gr_info_queue); | |
282 | } | |
851140a7 | 283 | |
6f4aee61 S |
284 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { |
285 | info->stale_client_ptr = client; | |
286 | info->stale_client = false; | |
851140a7 | 287 | } |
6f4aee61 S |
288 | |
289 | /* Delete the stale client */ | |
290 | listnode_delete(zrouter.stale_client_list, old_client); | |
291 | /* Delete old client */ | |
c0ce4875 | 292 | zserv_client_delete(old_client); |
851140a7 S |
293 | } |
294 | ||
b9e6727a S |
295 | /* |
296 | * Functions to deal with capabilities | |
297 | */ | |
298 | ||
299 | /* | |
300 | * Update the graceful restart information | |
301 | * for the client instance. | |
98cb53f9 | 302 | * This function handles all the capabilities that are received. |
b9e6727a S |
303 | */ |
304 | static void zebra_client_update_info(struct zserv *client, struct zapi_cap *api) | |
305 | { | |
306 | struct client_gr_info *info = NULL; | |
307 | ||
308 | /* Find the bgp information for the specified vrf id */ | |
309 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { | |
310 | if (info->vrf_id == api->vrf_id) | |
311 | break; | |
312 | } | |
313 | ||
314 | ||
315 | /* | |
316 | * If the command is delete, then cancel the stale timer and | |
317 | * delete the bgp info | |
318 | */ | |
319 | switch (api->cap) { | |
320 | case ZEBRA_CLIENT_GR_DISABLE: | |
321 | if (!info) | |
322 | return; | |
323 | ||
324 | LOG_GR("%s: Client %s instance GR disabled count %d", __func__, | |
325 | zebra_route_string(client->proto), | |
326 | client->gr_instance_count); | |
327 | ||
328 | if ((info->gr_enable) && (client->gr_instance_count > 0)) | |
329 | client->gr_instance_count--; | |
330 | ||
331 | zebra_gr_client_info_delte(client, info); | |
332 | break; | |
333 | case ZEBRA_CLIENT_GR_CAPABILITIES: | |
334 | /* Allocate bgp info */ | |
335 | if (!info) | |
336 | info = zebra_gr_client_info_create(client); | |
337 | ||
98cb53f9 | 338 | /* Update other parameters */ |
b9e6727a S |
339 | if (!info->gr_enable) { |
340 | client->gr_instance_count++; | |
341 | ||
342 | LOG_GR("%s: Cient %s GR enabled count %d", __func__, | |
343 | zebra_route_string(client->proto), | |
344 | client->gr_instance_count); | |
345 | ||
346 | info->capabilities = api->cap; | |
347 | info->stale_removal_time = api->stale_removal_time; | |
348 | info->vrf_id = api->vrf_id; | |
349 | info->gr_enable = true; | |
350 | } | |
351 | break; | |
352 | case ZEBRA_CLIENT_RIB_STALE_TIME: | |
353 | LOG_GR("%s: Client %s stale time update event", __func__, | |
354 | zebra_route_string(client->proto)); | |
355 | ||
356 | /* Update the stale removal timer */ | |
357 | if (info && info->t_stale_removal == NULL) { | |
358 | ||
359 | LOG_GR("%s: Stale time: %d is now update to: %d", | |
360 | __func__, info->stale_removal_time, | |
361 | api->stale_removal_time); | |
362 | ||
363 | info->stale_removal_time = api->stale_removal_time; | |
364 | } | |
365 | ||
366 | break; | |
367 | case ZEBRA_CLIENT_ROUTE_UPDATE_COMPLETE: | |
368 | LOG_GR( | |
369 | "%s: Client %s route update complete for AFI %d, SAFI %d", | |
370 | __func__, zebra_route_string(client->proto), api->afi, | |
371 | api->safi); | |
372 | if (info) | |
373 | info->route_sync[api->afi][api->safi] = true; | |
374 | break; | |
375 | case ZEBRA_CLIENT_ROUTE_UPDATE_PENDING: | |
376 | LOG_GR("%s: Client %s route update pending for AFI %d, SAFI %d", | |
377 | __func__, zebra_route_string(client->proto), api->afi, | |
378 | api->safi); | |
379 | if (info) | |
380 | info->af_enabled[api->afi][api->safi] = true; | |
381 | break; | |
382 | } | |
383 | } | |
384 | ||
385 | /* | |
386 | * Handler for capabilities that are received from client. | |
387 | */ | |
388 | static void zebra_client_capabilities_handler(struct zserv *client, | |
389 | struct zapi_cap *api) | |
390 | { | |
391 | switch (api->cap) { | |
392 | case ZEBRA_CLIENT_GR_CAPABILITIES: | |
393 | case ZEBRA_CLIENT_ROUTE_UPDATE_PENDING: | |
394 | case ZEBRA_CLIENT_GR_DISABLE: | |
395 | case ZEBRA_CLIENT_RIB_STALE_TIME: | |
396 | /* | |
397 | * For all the cases we need to update the client info. | |
398 | */ | |
399 | zebra_client_update_info(client, api); | |
400 | break; | |
401 | case ZEBRA_CLIENT_ROUTE_UPDATE_COMPLETE: | |
402 | /* | |
403 | * After client info has been updated delete all | |
404 | * stale routes | |
405 | */ | |
406 | zebra_client_update_info(client, api); | |
407 | zebra_gr_process_client_stale_routes(client, api->vrf_id); | |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
412 | /* | |
413 | * Function to decode and call appropriate functions | |
414 | * to handle client capabilities. | |
415 | */ | |
416 | void zread_client_capabilities(ZAPI_HANDLER_ARGS) | |
417 | { | |
418 | struct zapi_cap api; | |
419 | struct stream *s; | |
420 | ||
421 | s = msg; | |
422 | ||
423 | if (zapi_capabilities_decode(s, &api)) { | |
424 | LOG_GR("%s: Error in reading capabilities for client %s", | |
425 | __func__, zebra_route_string(client->proto)); | |
426 | return; | |
427 | } | |
428 | ||
6f4aee61 S |
429 | /* GR only for dynamic clients */ |
430 | if (client->proto <= ZEBRA_ROUTE_CONNECT) { | |
431 | LOG_GR("%s: GR capabilities for client %s not supported", | |
432 | __func__, zebra_route_string(client->proto)); | |
433 | return; | |
434 | } | |
b9e6727a S |
435 | /* Call the capabilities handler */ |
436 | zebra_client_capabilities_handler(client, &api); | |
437 | } | |
438 | ||
439 | ||
440 | /* | |
441 | * Stale route handling | |
442 | */ | |
443 | ||
444 | /* | |
445 | * Delete all the stale routes that have not been refreshed | |
446 | * post restart. | |
447 | */ | |
cc9f21da | 448 | static void zebra_gr_route_stale_delete_timer_expiry(struct thread *thread) |
b9e6727a S |
449 | { |
450 | struct client_gr_info *info; | |
451 | int32_t cnt = 0; | |
452 | struct zserv *client; | |
453 | ||
454 | info = THREAD_ARG(thread); | |
455 | info->t_stale_removal = NULL; | |
456 | client = (struct zserv *)info->stale_client_ptr; | |
457 | ||
458 | /* Set the flag to indicate all stale route deletion */ | |
459 | if (thread->u.val == 1) | |
cd7108ba | 460 | info->do_delete = true; |
b9e6727a S |
461 | |
462 | cnt = zebra_gr_delete_stale_routes(info); | |
463 | ||
98cb53f9 | 464 | /* Restart the timer */ |
b9e6727a S |
465 | if (cnt > 0) { |
466 | LOG_GR("%s: Client %s processed %d routes. Start timer again", | |
467 | __func__, zebra_route_string(client->proto), cnt); | |
468 | ||
469 | thread_add_timer(zrouter.master, | |
470 | zebra_gr_route_stale_delete_timer_expiry, info, | |
471 | ZEBRA_DEFAULT_STALE_UPDATE_DELAY, | |
472 | &info->t_stale_removal); | |
473 | } else { | |
474 | /* No routes to delete for the VRF */ | |
98cb53f9 | 475 | LOG_GR("%s: Client %s all stale routes processed", __func__, |
b9e6727a S |
476 | zebra_route_string(client->proto)); |
477 | ||
c0ce4875 | 478 | XFREE(MTYPE_ZEBRA_GR, info->current_prefix); |
b9e6727a S |
479 | info->current_afi = 0; |
480 | zebra_gr_delete_stale_client(info); | |
481 | } | |
b9e6727a S |
482 | } |
483 | ||
484 | ||
485 | /* | |
486 | * Function to process to check if route entry is stale | |
487 | * or has been updated. | |
488 | */ | |
489 | static void zebra_gr_process_route_entry(struct zserv *client, | |
490 | struct route_node *rn, | |
491 | struct route_entry *re) | |
492 | { | |
b9e6727a S |
493 | if ((client == NULL) || (rn == NULL) || (re == NULL)) |
494 | return; | |
495 | ||
496 | /* If the route is not refreshed after restart, delete the entry */ | |
497 | if (re->uptime < client->restart_time) { | |
2dbe669b DA |
498 | if (IS_ZEBRA_DEBUG_RIB) |
499 | zlog_debug("%s: Client %s stale route %pFX is deleted", | |
b9e6727a | 500 | __func__, zebra_route_string(client->proto), |
2dbe669b | 501 | &rn->p); |
b9e6727a S |
502 | rib_delnode(rn, re); |
503 | } | |
504 | } | |
851140a7 | 505 | |
b9e6727a S |
506 | /* |
507 | * This function walks through the route table for all vrf and deletes | |
508 | * the stale routes for the restarted client specified by the protocol | |
509 | * type | |
510 | */ | |
511 | static int32_t zebra_gr_delete_stale_route(struct client_gr_info *info, | |
512 | struct zebra_vrf *zvrf) | |
851140a7 | 513 | { |
b9e6727a S |
514 | struct route_node *rn, *curr; |
515 | struct route_entry *re; | |
516 | struct route_entry *next; | |
517 | struct route_table *table; | |
518 | int32_t n = 0; | |
b9e6727a S |
519 | afi_t afi, curr_afi; |
520 | uint8_t proto; | |
521 | uint16_t instance; | |
522 | struct zserv *s_client; | |
523 | ||
524 | if ((info == NULL) || (zvrf == NULL)) | |
525 | return -1; | |
526 | ||
527 | s_client = info->stale_client_ptr; | |
528 | if (s_client == NULL) { | |
529 | LOG_GR("%s: Stale client not present", __func__); | |
530 | return -1; | |
531 | } | |
532 | ||
533 | proto = s_client->proto; | |
534 | instance = s_client->instance; | |
535 | curr_afi = info->current_afi; | |
536 | ||
537 | LOG_GR("%s: Client %s stale routes are being deleted", __func__, | |
538 | zebra_route_string(proto)); | |
539 | ||
540 | /* Process routes for all AFI */ | |
541 | for (afi = curr_afi; afi < AFI_MAX; afi++) { | |
542 | table = zvrf->table[afi][SAFI_UNICAST]; | |
b9e6727a S |
543 | |
544 | if (table) { | |
545 | /* | |
546 | * If the current prefix is NULL then get the first | |
547 | * route entry in the table | |
548 | */ | |
a093ad85 | 549 | if (info->current_prefix == NULL) { |
b9e6727a S |
550 | rn = route_top(table); |
551 | if (rn == NULL) | |
552 | continue; | |
b9e6727a | 553 | curr = rn; |
b9e6727a S |
554 | } else |
555 | /* Get the next route entry */ | |
a093ad85 QY |
556 | curr = route_table_get_next( |
557 | table, info->current_prefix); | |
b9e6727a S |
558 | |
559 | for (rn = curr; rn; rn = srcdest_route_next(rn)) { | |
560 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
561 | if (CHECK_FLAG(re->status, | |
562 | ROUTE_ENTRY_REMOVED)) | |
563 | continue; | |
564 | /* If the route refresh is received | |
565 | * after restart then do not delete | |
566 | * the route | |
567 | */ | |
568 | if (re->type == proto | |
569 | && re->instance == instance) { | |
570 | zebra_gr_process_route_entry( | |
571 | s_client, rn, re); | |
572 | n++; | |
573 | } | |
574 | ||
575 | /* If the max route count is reached | |
576 | * then timer thread will be restarted | |
577 | * Store the current prefix and afi | |
578 | */ | |
579 | if ((n >= ZEBRA_MAX_STALE_ROUTE_COUNT) | |
cd7108ba | 580 | && (info->do_delete == false)) { |
b9e6727a | 581 | info->current_afi = afi; |
a093ad85 | 582 | info->current_prefix = XCALLOC( |
c0ce4875 | 583 | MTYPE_ZEBRA_GR, |
a093ad85 QY |
584 | sizeof(struct prefix)); |
585 | prefix_copy( | |
586 | info->current_prefix, | |
587 | &rn->p); | |
b9e6727a S |
588 | return n; |
589 | } | |
590 | } | |
591 | } | |
592 | } | |
593 | /* | |
594 | * Reset the current prefix to indicate processing completion | |
595 | * of the current AFI | |
596 | */ | |
c0ce4875 | 597 | XFREE(MTYPE_ZEBRA_GR, info->current_prefix); |
b9e6727a | 598 | } |
851140a7 S |
599 | return 0; |
600 | } | |
b9e6727a S |
601 | |
602 | /* | |
603 | * Delete the stale routes when client is restarted and routes are not | |
604 | * refreshed within the stale timeout | |
605 | */ | |
606 | static int32_t zebra_gr_delete_stale_routes(struct client_gr_info *info) | |
607 | { | |
608 | struct vrf *vrf; | |
609 | struct zebra_vrf *zvrf; | |
610 | uint64_t cnt = 0; | |
611 | ||
612 | if (info == NULL) | |
613 | return -1; | |
614 | ||
615 | /* Get the current VRF */ | |
616 | vrf = vrf_lookup_by_id(info->vrf_id); | |
617 | if (vrf == NULL) { | |
618 | LOG_GR("%s: Invalid VRF %d", __func__, info->vrf_id); | |
619 | return -1; | |
620 | } | |
621 | ||
622 | zvrf = vrf->info; | |
623 | if (zvrf == NULL) { | |
624 | LOG_GR("%s: Invalid VRF entry %d", __func__, info->vrf_id); | |
625 | return -1; | |
626 | } | |
627 | ||
628 | cnt = zebra_gr_delete_stale_route(info, zvrf); | |
629 | return cnt; | |
630 | } | |
631 | ||
632 | /* | |
633 | * This function checks if route update for all AFI, SAFI is completed | |
634 | * and cancels the stale timer | |
635 | */ | |
636 | static void zebra_gr_process_client_stale_routes(struct zserv *client, | |
637 | vrf_id_t vrf_id) | |
638 | { | |
639 | struct client_gr_info *info = NULL; | |
640 | afi_t afi; | |
641 | safi_t safi; | |
642 | ||
643 | TAILQ_FOREACH (info, &client->gr_info_queue, gr_info) { | |
644 | if (info->vrf_id == vrf_id) | |
645 | break; | |
646 | } | |
647 | ||
648 | if (info == NULL) | |
649 | return; | |
650 | ||
651 | /* Check if route update completed for all AFI, SAFI */ | |
df8d723c DA |
652 | FOREACH_AFI_SAFI_NSF (afi, safi) { |
653 | if (info->af_enabled[afi][safi]) { | |
654 | if (!info->route_sync[afi][safi]) { | |
655 | LOG_GR("%s: Client %s route update not completed for AFI %d, SAFI %d", | |
656 | __func__, | |
657 | zebra_route_string(client->proto), afi, | |
658 | safi); | |
659 | return; | |
b9e6727a S |
660 | } |
661 | } | |
df8d723c | 662 | } |
b9e6727a S |
663 | |
664 | /* | |
665 | * Route update completed for all AFI, SAFI | |
666 | * Cancel the stale timer and process the routes | |
667 | */ | |
668 | if (info->t_stale_removal) { | |
98cb53f9 | 669 | LOG_GR("%s: Client %s canceled stale delete timer vrf %d", |
b9e6727a S |
670 | __func__, zebra_route_string(client->proto), |
671 | info->vrf_id); | |
672 | THREAD_OFF(info->t_stale_removal); | |
673 | thread_execute(zrouter.master, | |
674 | zebra_gr_route_stale_delete_timer_expiry, info, | |
675 | 0); | |
676 | } | |
677 | } |