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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
3f9c7369 DS |
2 | /** |
3 | * bgp_updgrp.c: BGP update group structures | |
4 | * | |
5 | * @copyright Copyright (C) 2014 Cumulus Networks, Inc. | |
6 | * | |
7 | * @author Avneesh Sachdev <avneesh@sproute.net> | |
8 | * @author Rajesh Varadarajan <rajesh@sproute.net> | |
9 | * @author Pradosh Mohapatra <pradosh@sproute.net> | |
3f9c7369 DS |
10 | */ |
11 | ||
12 | #include <zebra.h> | |
13 | ||
14 | #include "prefix.h" | |
24a58196 | 15 | #include "frrevent.h" |
3f9c7369 DS |
16 | #include "buffer.h" |
17 | #include "stream.h" | |
18 | #include "command.h" | |
19 | #include "sockunion.h" | |
20 | #include "network.h" | |
21 | #include "memory.h" | |
22 | #include "filter.h" | |
23 | #include "routemap.h" | |
3f9c7369 DS |
24 | #include "log.h" |
25 | #include "plist.h" | |
26 | #include "linklist.h" | |
27 | #include "workqueue.h" | |
28 | #include "hash.h" | |
29 | #include "jhash.h" | |
30 | #include "queue.h" | |
31 | ||
32 | #include "bgpd/bgpd.h" | |
33 | #include "bgpd/bgp_table.h" | |
34 | #include "bgpd/bgp_debug.h" | |
14454c9f | 35 | #include "bgpd/bgp_errors.h" |
3f9c7369 | 36 | #include "bgpd/bgp_fsm.h" |
b1dd7180 | 37 | #include "bgpd/bgp_addpath.h" |
3f9c7369 DS |
38 | #include "bgpd/bgp_advertise.h" |
39 | #include "bgpd/bgp_packet.h" | |
40 | #include "bgpd/bgp_updgrp.h" | |
41 | #include "bgpd/bgp_route.h" | |
42 | #include "bgpd/bgp_filter.h" | |
2fc102e1 | 43 | #include "bgpd/bgp_io.h" |
3f9c7369 DS |
44 | |
45 | /******************** | |
46 | * PRIVATE FUNCTIONS | |
47 | ********************/ | |
48 | ||
49 | /** | |
50 | * assign a unique ID to update group and subgroup. Mostly for display/ | |
51 | * debugging purposes. It's a 64-bit space - used leisurely without a | |
52 | * worry about its wrapping and about filling gaps. While at it, timestamp | |
53 | * the creation. | |
54 | */ | |
d62a17ae | 55 | static void update_group_checkin(struct update_group *updgrp) |
3f9c7369 | 56 | { |
d62a17ae | 57 | updgrp->id = ++bm->updgrp_idspace; |
083ec940 | 58 | updgrp->uptime = monotime(NULL); |
3f9c7369 DS |
59 | } |
60 | ||
d62a17ae | 61 | static void update_subgroup_checkin(struct update_subgroup *subgrp, |
62 | struct update_group *updgrp) | |
3f9c7369 | 63 | { |
d62a17ae | 64 | subgrp->id = ++bm->subgrp_idspace; |
083ec940 | 65 | subgrp->uptime = monotime(NULL); |
3f9c7369 DS |
66 | } |
67 | ||
ef56aee4 DA |
68 | static void sync_init(struct update_subgroup *subgrp, |
69 | struct update_group *updgrp) | |
3f9c7369 | 70 | { |
ef56aee4 DA |
71 | struct peer *peer = UPDGRP_PEER(updgrp); |
72 | ||
d62a17ae | 73 | subgrp->sync = |
74 | XCALLOC(MTYPE_BGP_SYNCHRONISE, sizeof(struct bgp_synchronize)); | |
a274fef8 DL |
75 | bgp_adv_fifo_init(&subgrp->sync->update); |
76 | bgp_adv_fifo_init(&subgrp->sync->withdraw); | |
77 | bgp_adv_fifo_init(&subgrp->sync->withdraw_low); | |
996c9314 | 78 | subgrp->hash = |
4d28080c DA |
79 | hash_create(bgp_advertise_attr_hash_key, |
80 | bgp_advertise_attr_hash_cmp, "BGP SubGroup Hash"); | |
d62a17ae | 81 | |
82 | /* We use a larger buffer for subgrp->work in the event that: | |
83 | * - We RX a BGP_UPDATE where the attributes alone are just | |
ef56aee4 | 84 | * under 4096 or 65535 (if Extended Message capability negotiated). |
d62a17ae | 85 | * - The user configures an outbound route-map that does many as-path |
86 | * prepends or adds many communities. At most they can have | |
87 | * CMD_ARGC_MAX | |
88 | * args in a route-map so there is a finite limit on how large they | |
89 | * can | |
90 | * make the attributes. | |
91 | * | |
92 | * Having a buffer with BGP_MAX_PACKET_SIZE_OVERFLOW allows us to avoid | |
93 | * bounds | |
94 | * checking for every single attribute as we construct an UPDATE. | |
95 | */ | |
ef56aee4 DA |
96 | subgrp->work = stream_new(peer->max_packet_size |
97 | + BGP_MAX_PACKET_SIZE_OVERFLOW); | |
98 | subgrp->scratch = stream_new(peer->max_packet_size); | |
3f9c7369 DS |
99 | } |
100 | ||
d62a17ae | 101 | static void sync_delete(struct update_subgroup *subgrp) |
3f9c7369 | 102 | { |
0a22ddfb | 103 | XFREE(MTYPE_BGP_SYNCHRONISE, subgrp->sync); |
d8bc11a5 DS |
104 | hash_clean_and_free(&subgrp->hash, |
105 | (void (*)(void *))bgp_advertise_attr_free); | |
106 | ||
d62a17ae | 107 | if (subgrp->work) |
108 | stream_free(subgrp->work); | |
109 | subgrp->work = NULL; | |
110 | if (subgrp->scratch) | |
111 | stream_free(subgrp->scratch); | |
112 | subgrp->scratch = NULL; | |
3f9c7369 DS |
113 | } |
114 | ||
115 | /** | |
116 | * conf_copy | |
117 | * | |
118 | * copy only those fields that are relevant to update group match | |
119 | */ | |
d62a17ae | 120 | static void conf_copy(struct peer *dst, struct peer *src, afi_t afi, |
121 | safi_t safi) | |
3f9c7369 | 122 | { |
d62a17ae | 123 | struct bgp_filter *srcfilter; |
124 | struct bgp_filter *dstfilter; | |
125 | ||
126 | srcfilter = &src->filter[afi][safi]; | |
127 | dstfilter = &dst->filter[afi][safi]; | |
128 | ||
129 | dst->bgp = src->bgp; | |
130 | dst->sort = src->sort; | |
131 | dst->as = src->as; | |
132 | dst->v_routeadv = src->v_routeadv; | |
133 | dst->flags = src->flags; | |
134 | dst->af_flags[afi][safi] = src->af_flags[afi][safi]; | |
fde246e8 | 135 | dst->pmax_out[afi][safi] = src->pmax_out[afi][safi]; |
ef56aee4 | 136 | dst->max_packet_size = src->max_packet_size; |
0a22ddfb | 137 | XFREE(MTYPE_BGP_PEER_HOST, dst->host); |
d62a17ae | 138 | |
139 | dst->host = XSTRDUP(MTYPE_BGP_PEER_HOST, src->host); | |
140 | dst->cap = src->cap; | |
141 | dst->af_cap[afi][safi] = src->af_cap[afi][safi]; | |
142 | dst->afc_nego[afi][safi] = src->afc_nego[afi][safi]; | |
143 | dst->orf_plist[afi][safi] = src->orf_plist[afi][safi]; | |
dcc68b5e | 144 | dst->addpath_type[afi][safi] = src->addpath_type[afi][safi]; |
d62a17ae | 145 | dst->local_as = src->local_as; |
146 | dst->change_local_as = src->change_local_as; | |
147 | dst->shared_network = src->shared_network; | |
d864dd9e | 148 | dst->local_role = src->local_role; |
25851bf0 | 149 | dst->as_path_loop_detection = src->as_path_loop_detection; |
01da2d26 DA |
150 | |
151 | if (src->soo[afi][safi]) { | |
152 | ecommunity_free(&dst->soo[afi][safi]); | |
153 | dst->soo[afi][safi] = ecommunity_dup(src->soo[afi][safi]); | |
154 | } | |
155 | ||
d62a17ae | 156 | memcpy(&(dst->nexthop), &(src->nexthop), sizeof(struct bgp_nexthop)); |
157 | ||
158 | dst->group = src->group; | |
159 | ||
160 | if (src->default_rmap[afi][safi].name) { | |
161 | dst->default_rmap[afi][safi].name = | |
162 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, | |
163 | src->default_rmap[afi][safi].name); | |
164 | dst->default_rmap[afi][safi].map = | |
165 | src->default_rmap[afi][safi].map; | |
166 | } | |
167 | ||
168 | if (DISTRIBUTE_OUT_NAME(srcfilter)) { | |
169 | DISTRIBUTE_OUT_NAME(dstfilter) = XSTRDUP( | |
170 | MTYPE_BGP_FILTER_NAME, DISTRIBUTE_OUT_NAME(srcfilter)); | |
171 | DISTRIBUTE_OUT(dstfilter) = DISTRIBUTE_OUT(srcfilter); | |
172 | } | |
173 | ||
174 | if (PREFIX_LIST_OUT_NAME(srcfilter)) { | |
175 | PREFIX_LIST_OUT_NAME(dstfilter) = XSTRDUP( | |
176 | MTYPE_BGP_FILTER_NAME, PREFIX_LIST_OUT_NAME(srcfilter)); | |
177 | PREFIX_LIST_OUT(dstfilter) = PREFIX_LIST_OUT(srcfilter); | |
178 | } | |
179 | ||
180 | if (FILTER_LIST_OUT_NAME(srcfilter)) { | |
181 | FILTER_LIST_OUT_NAME(dstfilter) = XSTRDUP( | |
182 | MTYPE_BGP_FILTER_NAME, FILTER_LIST_OUT_NAME(srcfilter)); | |
183 | FILTER_LIST_OUT(dstfilter) = FILTER_LIST_OUT(srcfilter); | |
184 | } | |
185 | ||
186 | if (ROUTE_MAP_OUT_NAME(srcfilter)) { | |
187 | ROUTE_MAP_OUT_NAME(dstfilter) = XSTRDUP( | |
188 | MTYPE_BGP_FILTER_NAME, ROUTE_MAP_OUT_NAME(srcfilter)); | |
189 | ROUTE_MAP_OUT(dstfilter) = ROUTE_MAP_OUT(srcfilter); | |
190 | } | |
191 | ||
192 | if (UNSUPPRESS_MAP_NAME(srcfilter)) { | |
193 | UNSUPPRESS_MAP_NAME(dstfilter) = XSTRDUP( | |
194 | MTYPE_BGP_FILTER_NAME, UNSUPPRESS_MAP_NAME(srcfilter)); | |
195 | UNSUPPRESS_MAP(dstfilter) = UNSUPPRESS_MAP(srcfilter); | |
196 | } | |
7f7940e6 MK |
197 | |
198 | if (ADVERTISE_MAP_NAME(srcfilter)) { | |
199 | ADVERTISE_MAP_NAME(dstfilter) = XSTRDUP( | |
200 | MTYPE_BGP_FILTER_NAME, ADVERTISE_MAP_NAME(srcfilter)); | |
201 | ADVERTISE_MAP(dstfilter) = ADVERTISE_MAP(srcfilter); | |
202 | ADVERTISE_CONDITION(dstfilter) = ADVERTISE_CONDITION(srcfilter); | |
203 | } | |
204 | ||
205 | if (CONDITION_MAP_NAME(srcfilter)) { | |
206 | CONDITION_MAP_NAME(dstfilter) = XSTRDUP( | |
207 | MTYPE_BGP_FILTER_NAME, CONDITION_MAP_NAME(srcfilter)); | |
208 | CONDITION_MAP(dstfilter) = CONDITION_MAP(srcfilter); | |
209 | } | |
f373ce6c QY |
210 | |
211 | dstfilter->advmap.update_type = srcfilter->advmap.update_type; | |
3f9c7369 DS |
212 | } |
213 | ||
214 | /** | |
6e919709 | 215 | * since we did a bunch of XSTRDUP's in conf_copy, time to free them up |
3f9c7369 | 216 | */ |
d62a17ae | 217 | static void conf_release(struct peer *src, afi_t afi, safi_t safi) |
3f9c7369 | 218 | { |
d62a17ae | 219 | struct bgp_filter *srcfilter; |
3f9c7369 | 220 | |
d62a17ae | 221 | srcfilter = &src->filter[afi][safi]; |
3f9c7369 | 222 | |
0a22ddfb | 223 | XFREE(MTYPE_ROUTE_MAP_NAME, src->default_rmap[afi][safi].name); |
3f9c7369 | 224 | |
0a22ddfb | 225 | XFREE(MTYPE_BGP_FILTER_NAME, srcfilter->dlist[FILTER_OUT].name); |
3f9c7369 | 226 | |
0a22ddfb | 227 | XFREE(MTYPE_BGP_FILTER_NAME, srcfilter->plist[FILTER_OUT].name); |
3f9c7369 | 228 | |
0a22ddfb | 229 | XFREE(MTYPE_BGP_FILTER_NAME, srcfilter->aslist[FILTER_OUT].name); |
3f9c7369 | 230 | |
0a22ddfb | 231 | XFREE(MTYPE_BGP_FILTER_NAME, srcfilter->map[RMAP_OUT].name); |
3f9c7369 | 232 | |
0a22ddfb | 233 | XFREE(MTYPE_BGP_FILTER_NAME, srcfilter->usmap.name); |
495f0b13 | 234 | |
7f7940e6 MK |
235 | XFREE(MTYPE_BGP_FILTER_NAME, srcfilter->advmap.aname); |
236 | ||
237 | XFREE(MTYPE_BGP_FILTER_NAME, srcfilter->advmap.cname); | |
238 | ||
0a22ddfb | 239 | XFREE(MTYPE_BGP_PEER_HOST, src->host); |
61adcf71 DA |
240 | |
241 | ecommunity_free(&src->soo[afi][safi]); | |
3f9c7369 DS |
242 | } |
243 | ||
d62a17ae | 244 | static void peer2_updgrp_copy(struct update_group *updgrp, struct peer_af *paf) |
3f9c7369 | 245 | { |
d62a17ae | 246 | struct peer *src; |
247 | struct peer *dst; | |
3f9c7369 | 248 | |
d62a17ae | 249 | if (!updgrp || !paf) |
250 | return; | |
3f9c7369 | 251 | |
d62a17ae | 252 | src = paf->peer; |
253 | dst = updgrp->conf; | |
254 | if (!src || !dst) | |
255 | return; | |
3f9c7369 | 256 | |
d62a17ae | 257 | updgrp->afi = paf->afi; |
258 | updgrp->safi = paf->safi; | |
259 | updgrp->afid = paf->afid; | |
260 | updgrp->bgp = src->bgp; | |
3f9c7369 | 261 | |
d62a17ae | 262 | conf_copy(dst, src, paf->afi, paf->safi); |
3f9c7369 DS |
263 | } |
264 | ||
265 | /** | |
266 | * auxiliary functions to maintain the hash table. | |
267 | * - updgrp_hash_alloc - to create a new entry, passed to hash_get | |
268 | * - updgrp_hash_key_make - makes the key for update group search | |
269 | * - updgrp_hash_cmp - compare two update groups. | |
270 | */ | |
d62a17ae | 271 | static void *updgrp_hash_alloc(void *p) |
3f9c7369 | 272 | { |
d62a17ae | 273 | struct update_group *updgrp; |
274 | const struct update_group *in; | |
275 | ||
276 | in = (const struct update_group *)p; | |
277 | updgrp = XCALLOC(MTYPE_BGP_UPDGRP, sizeof(struct update_group)); | |
278 | memcpy(updgrp, in, sizeof(struct update_group)); | |
279 | updgrp->conf = XCALLOC(MTYPE_BGP_PEER, sizeof(struct peer)); | |
280 | conf_copy(updgrp->conf, in->conf, in->afi, in->safi); | |
281 | return updgrp; | |
3f9c7369 DS |
282 | } |
283 | ||
284 | /** | |
285 | * The hash value for a peer is computed from the following variables: | |
286 | * v = f( | |
287 | * 1. IBGP (1) or EBGP (2) | |
288 | * 2. FLAGS based on configuration: | |
289 | * LOCAL_AS_NO_PREPEND | |
290 | * LOCAL_AS_REPLACE_AS | |
291 | * 3. AF_FLAGS based on configuration: | |
292 | * Refer to definition in bgp_updgrp.h | |
293 | * 4. (AF-independent) Capability flags: | |
294 | * AS4_RCV capability | |
295 | * 5. (AF-dependent) Capability flags: | |
296 | * ORF_PREFIX_SM_RCV (peer can send prefix ORF) | |
297 | * 6. MRAI | |
298 | * 7. peer-group name | |
299 | * 8. Outbound route-map name (neighbor route-map <> out) | |
300 | * 9. Outbound distribute-list name (neighbor distribute-list <> out) | |
301 | * 10. Outbound prefix-list name (neighbor prefix-list <> out) | |
302 | * 11. Outbound as-list name (neighbor filter-list <> out) | |
303 | * 12. Unsuppress map name (neighbor unsuppress-map <>) | |
304 | * 13. default rmap name (neighbor default-originate route-map <>) | |
305 | * 14. encoding both global and link-local nexthop? | |
306 | * 15. If peer is configured to be a lonesoul, peer ip address | |
307 | * 16. Local-as should match, if configured. | |
e0267260 | 308 | * 17. maximum-prefix-out |
d864dd9e | 309 | * 18. Local-role should also match, if configured. |
3f9c7369 DS |
310 | * ) |
311 | */ | |
d8b87afe | 312 | static unsigned int updgrp_hash_key_make(const void *p) |
3f9c7369 | 313 | { |
d62a17ae | 314 | const struct update_group *updgrp; |
315 | const struct peer *peer; | |
316 | const struct bgp_filter *filter; | |
d782e3ff | 317 | uint64_t flags; |
d62a17ae | 318 | uint32_t key; |
319 | afi_t afi; | |
320 | safi_t safi; | |
3f9c7369 | 321 | |
b0d2fa38 DS |
322 | /* |
323 | * IF YOU ADD AN ADDITION TO THE HASH KEY TO ENSURE | |
324 | * THAT THE UPDATE GROUP CALCULATION IS CORRECT THEN | |
325 | * PLEASE ADD IT TO THE DEBUG OUTPUT TOO AT THE BOTTOM | |
326 | */ | |
3f9c7369 DS |
327 | #define SEED1 999331 |
328 | #define SEED2 2147483647 | |
329 | ||
d62a17ae | 330 | updgrp = p; |
331 | peer = updgrp->conf; | |
332 | afi = updgrp->afi; | |
333 | safi = updgrp->safi; | |
334 | flags = peer->af_flags[afi][safi]; | |
335 | filter = &peer->filter[afi][safi]; | |
336 | ||
337 | key = 0; | |
338 | ||
339 | key = jhash_1word(peer->sort, key); /* EBGP or IBGP */ | |
340 | key = jhash_1word((peer->flags & PEER_UPDGRP_FLAGS), key); | |
341 | key = jhash_1word((flags & PEER_UPDGRP_AF_FLAGS), key); | |
dcc68b5e | 342 | key = jhash_1word((uint32_t)peer->addpath_type[afi][safi], key); |
d62a17ae | 343 | key = jhash_1word((peer->cap & PEER_UPDGRP_CAP_FLAGS), key); |
344 | key = jhash_1word((peer->af_cap[afi][safi] & PEER_UPDGRP_AF_CAP_FLAGS), | |
345 | key); | |
346 | key = jhash_1word(peer->v_routeadv, key); | |
347 | key = jhash_1word(peer->change_local_as, key); | |
cecd7358 | 348 | key = jhash_1word(peer->max_packet_size, key); |
e0267260 | 349 | key = jhash_1word(peer->pmax_out[afi][safi], key); |
d62a17ae | 350 | |
25851bf0 DA |
351 | if (peer->as_path_loop_detection) |
352 | key = jhash_2words(peer->as, peer->as_path_loop_detection, key); | |
353 | ||
d62a17ae | 354 | if (peer->group) |
355 | key = jhash_1word(jhash(peer->group->name, | |
356 | strlen(peer->group->name), SEED1), | |
357 | key); | |
358 | ||
359 | if (filter->map[RMAP_OUT].name) | |
360 | key = jhash_1word(jhash(filter->map[RMAP_OUT].name, | |
361 | strlen(filter->map[RMAP_OUT].name), | |
362 | SEED1), | |
363 | key); | |
364 | ||
365 | if (filter->dlist[FILTER_OUT].name) | |
366 | key = jhash_1word(jhash(filter->dlist[FILTER_OUT].name, | |
367 | strlen(filter->dlist[FILTER_OUT].name), | |
368 | SEED1), | |
369 | key); | |
370 | ||
371 | if (filter->plist[FILTER_OUT].name) | |
372 | key = jhash_1word(jhash(filter->plist[FILTER_OUT].name, | |
373 | strlen(filter->plist[FILTER_OUT].name), | |
374 | SEED1), | |
375 | key); | |
376 | ||
377 | if (filter->aslist[FILTER_OUT].name) | |
378 | key = jhash_1word(jhash(filter->aslist[FILTER_OUT].name, | |
379 | strlen(filter->aslist[FILTER_OUT].name), | |
380 | SEED1), | |
381 | key); | |
382 | ||
383 | if (filter->usmap.name) | |
384 | key = jhash_1word(jhash(filter->usmap.name, | |
385 | strlen(filter->usmap.name), SEED1), | |
386 | key); | |
387 | ||
7f7940e6 MK |
388 | if (filter->advmap.aname) |
389 | key = jhash_1word(jhash(filter->advmap.aname, | |
390 | strlen(filter->advmap.aname), SEED1), | |
391 | key); | |
392 | ||
f373ce6c QY |
393 | if (filter->advmap.update_type) |
394 | key = jhash_1word(filter->advmap.update_type, key); | |
395 | ||
d62a17ae | 396 | if (peer->default_rmap[afi][safi].name) |
397 | key = jhash_1word( | |
398 | jhash(peer->default_rmap[afi][safi].name, | |
399 | strlen(peer->default_rmap[afi][safi].name), | |
400 | SEED1), | |
401 | key); | |
402 | ||
403 | /* If peer is on a shared network and is exchanging IPv6 prefixes, | |
404 | * it needs to include link-local address. That's different from | |
405 | * non-shared-network peers (nexthop encoded with 32 bytes vs 16 | |
406 | * bytes). We create different update groups to take care of that. | |
407 | */ | |
408 | key = jhash_1word( | |
409 | (peer->shared_network && peer_afi_active_nego(peer, AFI_IP6)), | |
410 | key); | |
d62a17ae | 411 | /* |
412 | * There are certain peers that must get their own update-group: | |
413 | * - lonesoul peers | |
414 | * - peers that negotiated ORF | |
a849a3fe | 415 | * - maximum-prefix-out is set |
d62a17ae | 416 | */ |
417 | if (CHECK_FLAG(peer->flags, PEER_FLAG_LONESOUL) | |
418 | || CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_RCV) | |
419 | || CHECK_FLAG(peer->af_cap[afi][safi], | |
a849a3fe DA |
420 | PEER_CAP_ORF_PREFIX_SM_OLD_RCV) |
421 | || CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_MAX_PREFIX_OUT)) | |
d62a17ae | 422 | key = jhash_1word(jhash(peer->host, strlen(peer->host), SEED2), |
423 | key); | |
d864dd9e EB |
424 | /* |
425 | * Multiple sessions with the same neighbor should get their own | |
426 | * update-group if they have different roles. | |
427 | */ | |
428 | key = jhash_1word(peer->local_role, key); | |
d62a17ae | 429 | |
97a52c82 DA |
430 | /* Neighbors configured with the AIGP attribute are put in a separate |
431 | * update group from other neighbors. | |
432 | */ | |
433 | key = jhash_1word((peer->flags & PEER_FLAG_AIGP), key); | |
434 | ||
01da2d26 DA |
435 | if (peer->soo[afi][safi]) { |
436 | char *soo_str = ecommunity_str(peer->soo[afi][safi]); | |
437 | ||
438 | key = jhash_1word(jhash(soo_str, strlen(soo_str), SEED1), key); | |
439 | } | |
440 | ||
b0d2fa38 DS |
441 | /* |
442 | * ANY NEW ITEMS THAT ARE ADDED TO THE key, ENSURE DEBUG | |
443 | * STATEMENT STAYS UP TO DATE | |
444 | */ | |
34d8aff1 DS |
445 | if (bgp_debug_neighbor_events(peer)) { |
446 | zlog_debug( | |
da5e1a58 | 447 | "%pBP Update Group Hash: sort: %d UpdGrpFlags: %ju UpdGrpAFFlags: %ju", |
0ebabd41 | 448 | peer, peer->sort, |
da5e1a58 DA |
449 | (intmax_t)CHECK_FLAG(peer->flags, PEER_UPDGRP_FLAGS), |
450 | (intmax_t)CHECK_FLAG(flags, PEER_UPDGRP_AF_FLAGS)); | |
34d8aff1 | 451 | zlog_debug( |
25851bf0 | 452 | "%pBP Update Group Hash: addpath: %u UpdGrpCapFlag: %u UpdGrpCapAFFlag: %u route_adv: %u change local as: %u, as_path_loop_detection: %d", |
34d8aff1 | 453 | peer, (uint32_t)peer->addpath_type[afi][safi], |
da5e1a58 DA |
454 | CHECK_FLAG(peer->cap, PEER_UPDGRP_CAP_FLAGS), |
455 | CHECK_FLAG(peer->af_cap[afi][safi], | |
456 | PEER_UPDGRP_AF_CAP_FLAGS), | |
25851bf0 DA |
457 | peer->v_routeadv, peer->change_local_as, |
458 | peer->as_path_loop_detection); | |
34d8aff1 DS |
459 | zlog_debug( |
460 | "%pBP Update Group Hash: max packet size: %u pmax_out: %u Peer Group: %s rmap out: %s", | |
461 | peer, peer->max_packet_size, peer->pmax_out[afi][safi], | |
462 | peer->group ? peer->group->name : "(NONE)", | |
463 | ROUTE_MAP_OUT_NAME(filter) ? ROUTE_MAP_OUT_NAME(filter) | |
464 | : "(NONE)"); | |
465 | zlog_debug( | |
b0d2fa38 | 466 | "%pBP Update Group Hash: dlist out: %s plist out: %s aslist out: %s usmap out: %s advmap: %s %d", |
34d8aff1 DS |
467 | peer, |
468 | DISTRIBUTE_OUT_NAME(filter) | |
469 | ? DISTRIBUTE_OUT_NAME(filter) | |
470 | : "(NONE)", | |
471 | PREFIX_LIST_OUT_NAME(filter) | |
472 | ? PREFIX_LIST_OUT_NAME(filter) | |
473 | : "(NONE)", | |
474 | FILTER_LIST_OUT_NAME(filter) | |
475 | ? FILTER_LIST_OUT_NAME(filter) | |
476 | : "(NONE)", | |
477 | UNSUPPRESS_MAP_NAME(filter) | |
478 | ? UNSUPPRESS_MAP_NAME(filter) | |
479 | : "(NONE)", | |
480 | ADVERTISE_MAP_NAME(filter) ? ADVERTISE_MAP_NAME(filter) | |
b0d2fa38 DS |
481 | : "(NONE)", |
482 | filter->advmap.update_type); | |
34d8aff1 DS |
483 | zlog_debug( |
484 | "%pBP Update Group Hash: default rmap: %s shared network and afi active network: %d", | |
485 | peer, | |
486 | peer->default_rmap[afi][safi].name | |
487 | ? peer->default_rmap[afi][safi].name | |
488 | : "(NONE)", | |
489 | peer->shared_network && | |
490 | peer_afi_active_nego(peer, AFI_IP6)); | |
491 | zlog_debug( | |
da5e1a58 | 492 | "%pBP Update Group Hash: Lonesoul: %d ORF prefix: %u ORF old: %u max prefix out: %ju", |
37e70073 | 493 | peer, !!CHECK_FLAG(peer->flags, PEER_FLAG_LONESOUL), |
34d8aff1 DS |
494 | CHECK_FLAG(peer->af_cap[afi][safi], |
495 | PEER_CAP_ORF_PREFIX_SM_RCV), | |
496 | CHECK_FLAG(peer->af_cap[afi][safi], | |
497 | PEER_CAP_ORF_PREFIX_SM_OLD_RCV), | |
da5e1a58 DA |
498 | (intmax_t)CHECK_FLAG(peer->af_flags[afi][safi], |
499 | PEER_FLAG_MAX_PREFIX_OUT)); | |
b0d2fa38 DS |
500 | zlog_debug( |
501 | "%pBP Update Group Hash: local role: %u AIGP: %d SOO: %s", | |
502 | peer, peer->local_role, | |
503 | !!CHECK_FLAG(peer->flags, PEER_FLAG_AIGP), | |
504 | peer->soo[afi][safi] | |
505 | ? ecommunity_str(peer->soo[afi][safi]) | |
506 | : "(NONE)"); | |
34d8aff1 DS |
507 | zlog_debug("%pBP Update Group Hash key: %u", peer, key); |
508 | } | |
d62a17ae | 509 | return key; |
3f9c7369 DS |
510 | } |
511 | ||
74df8d6d | 512 | static bool updgrp_hash_cmp(const void *p1, const void *p2) |
3f9c7369 | 513 | { |
d62a17ae | 514 | const struct update_group *grp1; |
515 | const struct update_group *grp2; | |
516 | const struct peer *pe1; | |
517 | const struct peer *pe2; | |
d782e3ff DA |
518 | uint64_t flags1; |
519 | uint64_t flags2; | |
d62a17ae | 520 | const struct bgp_filter *fl1; |
521 | const struct bgp_filter *fl2; | |
522 | afi_t afi; | |
523 | safi_t safi; | |
524 | ||
525 | if (!p1 || !p2) | |
74df8d6d | 526 | return false; |
d62a17ae | 527 | |
528 | grp1 = p1; | |
529 | grp2 = p2; | |
530 | pe1 = grp1->conf; | |
531 | pe2 = grp2->conf; | |
532 | afi = grp1->afi; | |
533 | safi = grp1->safi; | |
534 | flags1 = pe1->af_flags[afi][safi]; | |
535 | flags2 = pe2->af_flags[afi][safi]; | |
536 | fl1 = &pe1->filter[afi][safi]; | |
537 | fl2 = &pe2->filter[afi][safi]; | |
538 | ||
539 | /* put EBGP and IBGP peers in different update groups */ | |
540 | if (pe1->sort != pe2->sort) | |
74df8d6d | 541 | return false; |
d62a17ae | 542 | |
543 | /* check peer flags */ | |
544 | if ((pe1->flags & PEER_UPDGRP_FLAGS) | |
545 | != (pe2->flags & PEER_UPDGRP_FLAGS)) | |
74df8d6d | 546 | return false; |
d62a17ae | 547 | |
548 | /* If there is 'local-as' configured, it should match. */ | |
549 | if (pe1->change_local_as != pe2->change_local_as) | |
74df8d6d | 550 | return false; |
d62a17ae | 551 | |
e0267260 LS |
552 | if (pe1->pmax_out[afi][safi] != pe2->pmax_out[afi][safi]) |
553 | return false; | |
554 | ||
d62a17ae | 555 | /* flags like route reflector client */ |
556 | if ((flags1 & PEER_UPDGRP_AF_FLAGS) != (flags2 & PEER_UPDGRP_AF_FLAGS)) | |
74df8d6d | 557 | return false; |
d62a17ae | 558 | |
dcc68b5e | 559 | if (pe1->addpath_type[afi][safi] != pe2->addpath_type[afi][safi]) |
b08047f8 | 560 | return false; |
dcc68b5e | 561 | |
d62a17ae | 562 | if ((pe1->cap & PEER_UPDGRP_CAP_FLAGS) |
563 | != (pe2->cap & PEER_UPDGRP_CAP_FLAGS)) | |
74df8d6d | 564 | return false; |
d62a17ae | 565 | |
566 | if ((pe1->af_cap[afi][safi] & PEER_UPDGRP_AF_CAP_FLAGS) | |
567 | != (pe2->af_cap[afi][safi] & PEER_UPDGRP_AF_CAP_FLAGS)) | |
74df8d6d | 568 | return false; |
d62a17ae | 569 | |
570 | if (pe1->v_routeadv != pe2->v_routeadv) | |
74df8d6d | 571 | return false; |
d62a17ae | 572 | |
573 | if (pe1->group != pe2->group) | |
74df8d6d | 574 | return false; |
d62a17ae | 575 | |
d864dd9e EB |
576 | /* Roles can affect filtering */ |
577 | if (pe1->local_role != pe2->local_role) | |
578 | return false; | |
579 | ||
d62a17ae | 580 | /* route-map names should be the same */ |
581 | if ((fl1->map[RMAP_OUT].name && !fl2->map[RMAP_OUT].name) | |
582 | || (!fl1->map[RMAP_OUT].name && fl2->map[RMAP_OUT].name) | |
583 | || (fl1->map[RMAP_OUT].name && fl2->map[RMAP_OUT].name | |
584 | && strcmp(fl1->map[RMAP_OUT].name, fl2->map[RMAP_OUT].name))) | |
74df8d6d | 585 | return false; |
d62a17ae | 586 | |
587 | if ((fl1->dlist[FILTER_OUT].name && !fl2->dlist[FILTER_OUT].name) | |
588 | || (!fl1->dlist[FILTER_OUT].name && fl2->dlist[FILTER_OUT].name) | |
589 | || (fl1->dlist[FILTER_OUT].name && fl2->dlist[FILTER_OUT].name | |
590 | && strcmp(fl1->dlist[FILTER_OUT].name, | |
591 | fl2->dlist[FILTER_OUT].name))) | |
74df8d6d | 592 | return false; |
d62a17ae | 593 | |
594 | if ((fl1->plist[FILTER_OUT].name && !fl2->plist[FILTER_OUT].name) | |
595 | || (!fl1->plist[FILTER_OUT].name && fl2->plist[FILTER_OUT].name) | |
596 | || (fl1->plist[FILTER_OUT].name && fl2->plist[FILTER_OUT].name | |
597 | && strcmp(fl1->plist[FILTER_OUT].name, | |
598 | fl2->plist[FILTER_OUT].name))) | |
74df8d6d | 599 | return false; |
d62a17ae | 600 | |
601 | if ((fl1->aslist[FILTER_OUT].name && !fl2->aslist[FILTER_OUT].name) | |
602 | || (!fl1->aslist[FILTER_OUT].name && fl2->aslist[FILTER_OUT].name) | |
603 | || (fl1->aslist[FILTER_OUT].name && fl2->aslist[FILTER_OUT].name | |
604 | && strcmp(fl1->aslist[FILTER_OUT].name, | |
605 | fl2->aslist[FILTER_OUT].name))) | |
74df8d6d | 606 | return false; |
d62a17ae | 607 | |
608 | if ((fl1->usmap.name && !fl2->usmap.name) | |
609 | || (!fl1->usmap.name && fl2->usmap.name) | |
610 | || (fl1->usmap.name && fl2->usmap.name | |
611 | && strcmp(fl1->usmap.name, fl2->usmap.name))) | |
74df8d6d | 612 | return false; |
d62a17ae | 613 | |
7f7940e6 MK |
614 | if ((fl1->advmap.aname && !fl2->advmap.aname) |
615 | || (!fl1->advmap.aname && fl2->advmap.aname) | |
616 | || (fl1->advmap.aname && fl2->advmap.aname | |
617 | && strcmp(fl1->advmap.aname, fl2->advmap.aname))) | |
618 | return false; | |
619 | ||
f373ce6c QY |
620 | if (fl1->advmap.update_type != fl2->advmap.update_type) |
621 | return false; | |
622 | ||
d62a17ae | 623 | if ((pe1->default_rmap[afi][safi].name |
624 | && !pe2->default_rmap[afi][safi].name) | |
625 | || (!pe1->default_rmap[afi][safi].name | |
626 | && pe2->default_rmap[afi][safi].name) | |
627 | || (pe1->default_rmap[afi][safi].name | |
628 | && pe2->default_rmap[afi][safi].name | |
629 | && strcmp(pe1->default_rmap[afi][safi].name, | |
630 | pe2->default_rmap[afi][safi].name))) | |
74df8d6d | 631 | return false; |
d62a17ae | 632 | |
633 | if ((afi == AFI_IP6) && (pe1->shared_network != pe2->shared_network)) | |
74df8d6d | 634 | return false; |
d62a17ae | 635 | |
636 | if ((CHECK_FLAG(pe1->flags, PEER_FLAG_LONESOUL) | |
637 | || CHECK_FLAG(pe1->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_RCV) | |
638 | || CHECK_FLAG(pe1->af_cap[afi][safi], | |
639 | PEER_CAP_ORF_PREFIX_SM_OLD_RCV)) | |
640 | && !sockunion_same(&pe1->su, &pe2->su)) | |
74df8d6d | 641 | return false; |
d62a17ae | 642 | |
74df8d6d | 643 | return true; |
3f9c7369 DS |
644 | } |
645 | ||
d62a17ae | 646 | static void peer_lonesoul_or_not(struct peer *peer, int set) |
3f9c7369 | 647 | { |
d62a17ae | 648 | /* no change in status? */ |
649 | if (set == (CHECK_FLAG(peer->flags, PEER_FLAG_LONESOUL) > 0)) | |
650 | return; | |
3f9c7369 | 651 | |
d62a17ae | 652 | if (set) |
653 | SET_FLAG(peer->flags, PEER_FLAG_LONESOUL); | |
654 | else | |
655 | UNSET_FLAG(peer->flags, PEER_FLAG_LONESOUL); | |
3f9c7369 | 656 | |
d62a17ae | 657 | update_group_adjust_peer_afs(peer); |
3f9c7369 DS |
658 | } |
659 | ||
660 | /* | |
661 | * subgroup_total_packets_enqueued | |
662 | * | |
663 | * Returns the total number of packets enqueued to a subgroup. | |
664 | */ | |
665 | static unsigned int | |
d62a17ae | 666 | subgroup_total_packets_enqueued(struct update_subgroup *subgrp) |
3f9c7369 | 667 | { |
d62a17ae | 668 | struct bpacket *pkt; |
3f9c7369 | 669 | |
d62a17ae | 670 | pkt = bpacket_queue_last(SUBGRP_PKTQ(subgrp)); |
3f9c7369 | 671 | |
d62a17ae | 672 | return pkt->ver - 1; |
3f9c7369 DS |
673 | } |
674 | ||
d62a17ae | 675 | static int update_group_show_walkcb(struct update_group *updgrp, void *arg) |
3f9c7369 | 676 | { |
d62a17ae | 677 | struct updwalk_context *ctx = arg; |
678 | struct vty *vty; | |
679 | struct update_subgroup *subgrp; | |
680 | struct peer_af *paf; | |
681 | struct bgp_filter *filter; | |
0997ee26 | 682 | struct peer *peer = UPDGRP_PEER(updgrp); |
d62a17ae | 683 | int match = 0; |
fa5a9276 AR |
684 | json_object *json_updgrp = NULL; |
685 | json_object *json_subgrps = NULL; | |
686 | json_object *json_subgrp = NULL; | |
687 | json_object *json_time = NULL; | |
688 | json_object *json_subgrp_time = NULL; | |
689 | json_object *json_subgrp_event = NULL; | |
690 | json_object *json_peers = NULL; | |
691 | json_object *json_pkt_info = NULL; | |
692 | time_t epoch_tbuf, tbuf; | |
d62a17ae | 693 | |
694 | if (!ctx) | |
695 | return CMD_SUCCESS; | |
696 | ||
697 | if (ctx->subgrp_id) { | |
a2addae8 | 698 | UPDGRP_FOREACH_SUBGRP (updgrp, subgrp) { |
d62a17ae | 699 | if (ctx->subgrp_id && (ctx->subgrp_id != subgrp->id)) |
700 | continue; | |
701 | else { | |
702 | match = 1; | |
703 | break; | |
704 | } | |
705 | } | |
706 | } else { | |
707 | match = 1; | |
708 | } | |
709 | ||
710 | if (!match) { | |
711 | /* Since this routine is invoked from a walk, we cannot signal | |
712 | * any */ | |
713 | /* error here, can only return. */ | |
714 | return CMD_SUCCESS; | |
715 | } | |
716 | ||
717 | vty = ctx->vty; | |
718 | ||
fa5a9276 AR |
719 | if (ctx->uj) { |
720 | json_updgrp = json_object_new_object(); | |
721 | /* Display json o/p */ | |
722 | tbuf = monotime(NULL); | |
723 | tbuf -= updgrp->uptime; | |
724 | epoch_tbuf = time(NULL) - tbuf; | |
725 | json_time = json_object_new_object(); | |
726 | json_object_int_add(json_time, "epoch", epoch_tbuf); | |
727 | json_object_string_add(json_time, "epochString", | |
728 | ctime(&epoch_tbuf)); | |
729 | json_object_object_add(json_updgrp, "groupCreateTime", | |
730 | json_time); | |
731 | json_object_string_add(json_updgrp, "afi", | |
732 | afi2str(updgrp->afi)); | |
733 | json_object_string_add(json_updgrp, "safi", | |
734 | safi2str(updgrp->safi)); | |
735 | } else { | |
736 | vty_out(vty, "Update-group %" PRIu64 ":\n", updgrp->id); | |
737 | vty_out(vty, " Created: %s", timestamp_string(updgrp->uptime)); | |
738 | } | |
739 | ||
d62a17ae | 740 | filter = &updgrp->conf->filter[updgrp->afi][updgrp->safi]; |
fa5a9276 AR |
741 | if (filter->map[RMAP_OUT].name) { |
742 | if (ctx->uj) | |
743 | json_object_string_add(json_updgrp, "outRouteMap", | |
744 | filter->map[RMAP_OUT].name); | |
745 | else | |
746 | vty_out(vty, " Outgoing route map: %s\n", | |
747 | filter->map[RMAP_OUT].name); | |
748 | } | |
d62a17ae | 749 | |
fa5a9276 AR |
750 | if (ctx->uj) |
751 | json_object_int_add(json_updgrp, "minRouteAdvInt", | |
752 | updgrp->conf->v_routeadv); | |
753 | else | |
754 | vty_out(vty, " MRAI value (seconds): %d\n", | |
755 | updgrp->conf->v_routeadv); | |
756 | ||
757 | if (updgrp->conf->change_local_as) { | |
758 | if (ctx->uj) { | |
759 | json_object_int_add(json_updgrp, "localAs", | |
760 | updgrp->conf->change_local_as); | |
761 | json_object_boolean_add( | |
762 | json_updgrp, "noPrepend", | |
763 | CHECK_FLAG(updgrp->conf->flags, | |
764 | PEER_FLAG_LOCAL_AS_NO_PREPEND)); | |
765 | json_object_boolean_add( | |
766 | json_updgrp, "replaceLocalAs", | |
767 | CHECK_FLAG(updgrp->conf->flags, | |
768 | PEER_FLAG_LOCAL_AS_REPLACE_AS)); | |
769 | } else { | |
770 | vty_out(vty, " Local AS %u%s%s\n", | |
771 | updgrp->conf->change_local_as, | |
772 | CHECK_FLAG(updgrp->conf->flags, | |
773 | PEER_FLAG_LOCAL_AS_NO_PREPEND) | |
774 | ? " no-prepend" | |
775 | : "", | |
776 | CHECK_FLAG(updgrp->conf->flags, | |
777 | PEER_FLAG_LOCAL_AS_REPLACE_AS) | |
778 | ? " replace-as" | |
779 | : ""); | |
780 | } | |
781 | } | |
5691f760 DS |
782 | if (ctx->uj) |
783 | json_subgrps = json_object_new_array(); | |
a2addae8 | 784 | UPDGRP_FOREACH_SUBGRP (updgrp, subgrp) { |
d62a17ae | 785 | if (ctx->subgrp_id && (ctx->subgrp_id != subgrp->id)) |
786 | continue; | |
fa5a9276 AR |
787 | if (ctx->uj) { |
788 | json_subgrp = json_object_new_object(); | |
789 | json_object_int_add(json_subgrp, "subGroupId", | |
790 | subgrp->id); | |
791 | tbuf = monotime(NULL); | |
792 | tbuf -= subgrp->uptime; | |
793 | epoch_tbuf = time(NULL) - tbuf; | |
794 | json_subgrp_time = json_object_new_object(); | |
795 | json_object_int_add(json_subgrp_time, "epoch", | |
796 | epoch_tbuf); | |
797 | json_object_string_add(json_subgrp_time, "epochString", | |
798 | ctime(&epoch_tbuf)); | |
799 | json_object_object_add(json_subgrp, "groupCreateTime", | |
800 | json_subgrp_time); | |
801 | } else { | |
802 | vty_out(vty, "\n"); | |
803 | vty_out(vty, " Update-subgroup %" PRIu64 ":\n", | |
804 | subgrp->id); | |
805 | vty_out(vty, " Created: %s", | |
806 | timestamp_string(subgrp->uptime)); | |
807 | } | |
d62a17ae | 808 | |
809 | if (subgrp->split_from.update_group_id | |
810 | || subgrp->split_from.subgroup_id) { | |
fa5a9276 AR |
811 | if (ctx->uj) { |
812 | json_object_int_add( | |
813 | json_subgrp, "splitGroupId", | |
814 | subgrp->split_from.update_group_id); | |
815 | json_object_int_add( | |
816 | json_subgrp, "splitSubGroupId", | |
817 | subgrp->split_from.subgroup_id); | |
818 | } else { | |
819 | vty_out(vty, | |
820 | " Split from group id: %" PRIu64 | |
821 | "\n", | |
822 | subgrp->split_from.update_group_id); | |
823 | vty_out(vty, | |
824 | " Split from subgroup id: %" PRIu64 | |
825 | "\n", | |
826 | subgrp->split_from.subgroup_id); | |
827 | } | |
d62a17ae | 828 | } |
829 | ||
fa5a9276 AR |
830 | if (ctx->uj) { |
831 | json_subgrp_event = json_object_new_object(); | |
832 | json_object_int_add(json_subgrp_event, "joinEvents", | |
833 | subgrp->join_events); | |
834 | json_object_int_add(json_subgrp_event, "pruneEvents", | |
835 | subgrp->prune_events); | |
836 | json_object_int_add(json_subgrp_event, "mergeEvents", | |
837 | subgrp->merge_events); | |
838 | json_object_int_add(json_subgrp_event, "splitEvents", | |
839 | subgrp->split_events); | |
840 | json_object_int_add(json_subgrp_event, "switchEvents", | |
841 | subgrp->updgrp_switch_events); | |
842 | json_object_int_add(json_subgrp_event, | |
843 | "peerRefreshEvents", | |
844 | subgrp->peer_refreshes_combined); | |
845 | json_object_int_add(json_subgrp_event, | |
846 | "mergeCheckEvents", | |
847 | subgrp->merge_checks_triggered); | |
848 | json_object_object_add(json_subgrp, "statistics", | |
849 | json_subgrp_event); | |
850 | json_object_int_add(json_subgrp, "coalesceTime", | |
851 | (UPDGRP_INST(subgrp->update_group)) | |
852 | ->coalesce_time); | |
853 | json_object_int_add(json_subgrp, "version", | |
854 | subgrp->version); | |
855 | json_pkt_info = json_object_new_object(); | |
856 | json_object_int_add( | |
857 | json_pkt_info, "qeueueLen", | |
858 | bpacket_queue_length(SUBGRP_PKTQ(subgrp))); | |
859 | json_object_int_add( | |
860 | json_pkt_info, "queuedTotal", | |
861 | subgroup_total_packets_enqueued(subgrp)); | |
862 | json_object_int_add( | |
863 | json_pkt_info, "queueHwmLen", | |
864 | bpacket_queue_hwm_length(SUBGRP_PKTQ(subgrp))); | |
865 | json_object_int_add( | |
866 | json_pkt_info, "totalEnqueued", | |
867 | subgroup_total_packets_enqueued(subgrp)); | |
868 | json_object_object_add(json_subgrp, "packetQueueInfo", | |
869 | json_pkt_info); | |
870 | json_object_int_add(json_subgrp, "adjListCount", | |
871 | subgrp->adj_count); | |
872 | json_object_boolean_add( | |
873 | json_subgrp, "needsRefresh", | |
874 | CHECK_FLAG(subgrp->flags, | |
875 | SUBGRP_FLAG_NEEDS_REFRESH)); | |
876 | } else { | |
877 | vty_out(vty, " Join events: %u\n", | |
878 | subgrp->join_events); | |
879 | vty_out(vty, " Prune events: %u\n", | |
880 | subgrp->prune_events); | |
881 | vty_out(vty, " Merge events: %u\n", | |
882 | subgrp->merge_events); | |
883 | vty_out(vty, " Split events: %u\n", | |
884 | subgrp->split_events); | |
885 | vty_out(vty, " Update group switch events: %u\n", | |
886 | subgrp->updgrp_switch_events); | |
887 | vty_out(vty, " Peer refreshes combined: %u\n", | |
888 | subgrp->peer_refreshes_combined); | |
889 | vty_out(vty, " Merge checks triggered: %u\n", | |
890 | subgrp->merge_checks_triggered); | |
891 | vty_out(vty, " Coalesce Time: %u%s\n", | |
892 | (UPDGRP_INST(subgrp->update_group)) | |
893 | ->coalesce_time, | |
894 | subgrp->t_coalesce ? "(Running)" : ""); | |
895 | vty_out(vty, " Version: %" PRIu64 "\n", | |
896 | subgrp->version); | |
897 | vty_out(vty, " Packet queue length: %d\n", | |
898 | bpacket_queue_length(SUBGRP_PKTQ(subgrp))); | |
899 | vty_out(vty, " Total packets enqueued: %u\n", | |
900 | subgroup_total_packets_enqueued(subgrp)); | |
901 | vty_out(vty, " Packet queue high watermark: %d\n", | |
902 | bpacket_queue_hwm_length(SUBGRP_PKTQ(subgrp))); | |
903 | vty_out(vty, " Adj-out list count: %u\n", | |
904 | subgrp->adj_count); | |
905 | vty_out(vty, " Advertise list: %s\n", | |
906 | advertise_list_is_empty(subgrp) ? "empty" | |
907 | : "not empty"); | |
908 | vty_out(vty, " Flags: %s\n", | |
909 | CHECK_FLAG(subgrp->flags, | |
910 | SUBGRP_FLAG_NEEDS_REFRESH) | |
911 | ? "R" | |
912 | : ""); | |
913 | if (peer) | |
914 | vty_out(vty, " Max packet size: %d\n", | |
915 | peer->max_packet_size); | |
916 | } | |
d62a17ae | 917 | if (subgrp->peer_count > 0) { |
fa5a9276 AR |
918 | if (ctx->uj) { |
919 | json_peers = json_object_new_array(); | |
920 | SUBGRP_FOREACH_PEER (subgrp, paf) { | |
921 | json_object *peer = | |
922 | json_object_new_string( | |
923 | paf->peer->host); | |
924 | json_object_array_add(json_peers, peer); | |
925 | } | |
926 | json_object_object_add(json_subgrp, "peers", | |
927 | json_peers); | |
928 | } else { | |
929 | vty_out(vty, " Peers:\n"); | |
930 | SUBGRP_FOREACH_PEER (subgrp, paf) | |
931 | vty_out(vty, " - %s\n", | |
932 | paf->peer->host); | |
933 | } | |
d62a17ae | 934 | } |
fa5a9276 AR |
935 | |
936 | if (ctx->uj) | |
937 | json_object_array_add(json_subgrps, json_subgrp); | |
8fe8a7f6 | 938 | } |
fa5a9276 AR |
939 | |
940 | if (ctx->uj) { | |
941 | json_object_object_add(json_updgrp, "subGroup", json_subgrps); | |
942 | json_object_object_addf(ctx->json_updategrps, json_updgrp, | |
943 | "%" PRIu64, updgrp->id); | |
944 | } | |
945 | ||
d62a17ae | 946 | return UPDWALK_CONTINUE; |
3f9c7369 DS |
947 | } |
948 | ||
949 | /* | |
950 | * Helper function to show the packet queue for each subgroup of update group. | |
951 | * Will be constrained to a particular subgroup id if id !=0 | |
952 | */ | |
d62a17ae | 953 | static int updgrp_show_packet_queue_walkcb(struct update_group *updgrp, |
954 | void *arg) | |
3f9c7369 | 955 | { |
d62a17ae | 956 | struct updwalk_context *ctx = arg; |
957 | struct update_subgroup *subgrp; | |
958 | struct vty *vty; | |
959 | ||
960 | vty = ctx->vty; | |
a2addae8 | 961 | UPDGRP_FOREACH_SUBGRP (updgrp, subgrp) { |
d62a17ae | 962 | if (ctx->subgrp_id && (ctx->subgrp_id != subgrp->id)) |
963 | continue; | |
964 | vty_out(vty, "update group %" PRIu64 ", subgroup %" PRIu64 "\n", | |
965 | updgrp->id, subgrp->id); | |
966 | bpacket_queue_show_vty(SUBGRP_PKTQ(subgrp), vty); | |
967 | } | |
968 | return UPDWALK_CONTINUE; | |
3f9c7369 DS |
969 | } |
970 | ||
971 | /* | |
972 | * Show the packet queue for each subgroup of update group. Will be | |
973 | * constrained to a particular subgroup id if id !=0 | |
974 | */ | |
d62a17ae | 975 | void update_group_show_packet_queue(struct bgp *bgp, afi_t afi, safi_t safi, |
976 | struct vty *vty, uint64_t id) | |
3f9c7369 | 977 | { |
d62a17ae | 978 | struct updwalk_context ctx; |
979 | ||
980 | memset(&ctx, 0, sizeof(ctx)); | |
981 | ctx.vty = vty; | |
982 | ctx.subgrp_id = id; | |
983 | ctx.flags = 0; | |
984 | update_group_af_walk(bgp, afi, safi, updgrp_show_packet_queue_walkcb, | |
985 | &ctx); | |
3f9c7369 DS |
986 | } |
987 | ||
d62a17ae | 988 | static struct update_group *update_group_find(struct peer_af *paf) |
3f9c7369 | 989 | { |
d62a17ae | 990 | struct update_group *updgrp; |
991 | struct update_group tmp; | |
992 | struct peer tmp_conf; | |
3f9c7369 | 993 | |
d62a17ae | 994 | if (!peer_established(PAF_PEER(paf))) |
995 | return NULL; | |
3f9c7369 | 996 | |
d62a17ae | 997 | memset(&tmp, 0, sizeof(tmp)); |
998 | memset(&tmp_conf, 0, sizeof(tmp_conf)); | |
999 | tmp.conf = &tmp_conf; | |
1000 | peer2_updgrp_copy(&tmp, paf); | |
3f9c7369 | 1001 | |
d62a17ae | 1002 | updgrp = hash_lookup(paf->peer->bgp->update_groups[paf->afid], &tmp); |
1003 | conf_release(&tmp_conf, paf->afi, paf->safi); | |
1004 | return updgrp; | |
3f9c7369 DS |
1005 | } |
1006 | ||
d62a17ae | 1007 | static struct update_group *update_group_create(struct peer_af *paf) |
3f9c7369 | 1008 | { |
d62a17ae | 1009 | struct update_group *updgrp; |
1010 | struct update_group tmp; | |
1011 | struct peer tmp_conf; | |
3f9c7369 | 1012 | |
d62a17ae | 1013 | memset(&tmp, 0, sizeof(tmp)); |
1014 | memset(&tmp_conf, 0, sizeof(tmp_conf)); | |
1015 | tmp.conf = &tmp_conf; | |
1016 | peer2_updgrp_copy(&tmp, paf); | |
3f9c7369 | 1017 | |
d62a17ae | 1018 | updgrp = hash_get(paf->peer->bgp->update_groups[paf->afid], &tmp, |
1019 | updgrp_hash_alloc); | |
d62a17ae | 1020 | update_group_checkin(updgrp); |
3f9c7369 | 1021 | |
d62a17ae | 1022 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) |
1023 | zlog_debug("create update group %" PRIu64, updgrp->id); | |
3f9c7369 | 1024 | |
d62a17ae | 1025 | UPDGRP_GLOBAL_STAT(updgrp, updgrps_created) += 1; |
3f9c7369 | 1026 | |
d62a17ae | 1027 | conf_release(&tmp_conf, paf->afi, paf->safi); |
1028 | return updgrp; | |
3f9c7369 DS |
1029 | } |
1030 | ||
d62a17ae | 1031 | static void update_group_delete(struct update_group *updgrp) |
3f9c7369 | 1032 | { |
d62a17ae | 1033 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) |
1034 | zlog_debug("delete update group %" PRIu64, updgrp->id); | |
3f9c7369 | 1035 | |
d62a17ae | 1036 | UPDGRP_GLOBAL_STAT(updgrp, updgrps_deleted) += 1; |
3f9c7369 | 1037 | |
d62a17ae | 1038 | hash_release(updgrp->bgp->update_groups[updgrp->afid], updgrp); |
1039 | conf_release(updgrp->conf, updgrp->afi, updgrp->safi); | |
3d68677e | 1040 | |
0a22ddfb | 1041 | XFREE(MTYPE_BGP_PEER_HOST, updgrp->conf->host); |
6e919709 | 1042 | |
0a22ddfb | 1043 | XFREE(MTYPE_BGP_PEER_IFNAME, updgrp->conf->ifname); |
6e919709 | 1044 | |
d62a17ae | 1045 | XFREE(MTYPE_BGP_PEER, updgrp->conf); |
1046 | XFREE(MTYPE_BGP_UPDGRP, updgrp); | |
3f9c7369 DS |
1047 | } |
1048 | ||
d62a17ae | 1049 | static void update_group_add_subgroup(struct update_group *updgrp, |
1050 | struct update_subgroup *subgrp) | |
3f9c7369 | 1051 | { |
d62a17ae | 1052 | if (!updgrp || !subgrp) |
1053 | return; | |
3f9c7369 | 1054 | |
d62a17ae | 1055 | LIST_INSERT_HEAD(&(updgrp->subgrps), subgrp, updgrp_train); |
1056 | subgrp->update_group = updgrp; | |
3f9c7369 DS |
1057 | } |
1058 | ||
d62a17ae | 1059 | static void update_group_remove_subgroup(struct update_group *updgrp, |
1060 | struct update_subgroup *subgrp) | |
3f9c7369 | 1061 | { |
d62a17ae | 1062 | if (!updgrp || !subgrp) |
1063 | return; | |
3f9c7369 | 1064 | |
d62a17ae | 1065 | LIST_REMOVE(subgrp, updgrp_train); |
1066 | subgrp->update_group = NULL; | |
1067 | if (LIST_EMPTY(&(updgrp->subgrps))) | |
1068 | update_group_delete(updgrp); | |
3f9c7369 DS |
1069 | } |
1070 | ||
1071 | static struct update_subgroup * | |
d62a17ae | 1072 | update_subgroup_create(struct update_group *updgrp) |
3f9c7369 | 1073 | { |
d62a17ae | 1074 | struct update_subgroup *subgrp; |
3f9c7369 | 1075 | |
d62a17ae | 1076 | subgrp = XCALLOC(MTYPE_BGP_UPD_SUBGRP, sizeof(struct update_subgroup)); |
1077 | update_subgroup_checkin(subgrp, updgrp); | |
1078 | subgrp->v_coalesce = (UPDGRP_INST(updgrp))->coalesce_time; | |
ef56aee4 | 1079 | sync_init(subgrp, updgrp); |
d62a17ae | 1080 | bpacket_queue_init(SUBGRP_PKTQ(subgrp)); |
1081 | bpacket_queue_add(SUBGRP_PKTQ(subgrp), NULL, NULL); | |
1082 | TAILQ_INIT(&(subgrp->adjq)); | |
1083 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) | |
1084 | zlog_debug("create subgroup u%" PRIu64 ":s%" PRIu64, updgrp->id, | |
1085 | subgrp->id); | |
3f9c7369 | 1086 | |
d62a17ae | 1087 | update_group_add_subgroup(updgrp, subgrp); |
3f9c7369 | 1088 | |
d62a17ae | 1089 | UPDGRP_INCR_STAT(updgrp, subgrps_created); |
3f9c7369 | 1090 | |
d62a17ae | 1091 | return subgrp; |
3f9c7369 DS |
1092 | } |
1093 | ||
d62a17ae | 1094 | static void update_subgroup_delete(struct update_subgroup *subgrp) |
3f9c7369 | 1095 | { |
d62a17ae | 1096 | if (!subgrp) |
1097 | return; | |
3f9c7369 | 1098 | |
d62a17ae | 1099 | if (subgrp->update_group) |
1100 | UPDGRP_INCR_STAT(subgrp->update_group, subgrps_deleted); | |
3f9c7369 | 1101 | |
e16d030c DS |
1102 | EVENT_OFF(subgrp->t_merge_check); |
1103 | EVENT_OFF(subgrp->t_coalesce); | |
3f9c7369 | 1104 | |
d62a17ae | 1105 | bpacket_queue_cleanup(SUBGRP_PKTQ(subgrp)); |
1106 | subgroup_clear_table(subgrp); | |
3f9c7369 | 1107 | |
d62a17ae | 1108 | sync_delete(subgrp); |
3f9c7369 | 1109 | |
4f9a63ad | 1110 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS) && subgrp->update_group) |
d62a17ae | 1111 | zlog_debug("delete subgroup u%" PRIu64 ":s%" PRIu64, |
1112 | subgrp->update_group->id, subgrp->id); | |
3f9c7369 | 1113 | |
d62a17ae | 1114 | update_group_remove_subgroup(subgrp->update_group, subgrp); |
3f9c7369 | 1115 | |
d62a17ae | 1116 | XFREE(MTYPE_BGP_UPD_SUBGRP, subgrp); |
3f9c7369 DS |
1117 | } |
1118 | ||
d62a17ae | 1119 | void update_subgroup_inherit_info(struct update_subgroup *to, |
1120 | struct update_subgroup *from) | |
3f9c7369 | 1121 | { |
d62a17ae | 1122 | if (!to || !from) |
1123 | return; | |
3f9c7369 | 1124 | |
d62a17ae | 1125 | to->sflags = from->sflags; |
3f9c7369 DS |
1126 | } |
1127 | ||
1128 | /* | |
1129 | * update_subgroup_check_delete | |
1130 | * | |
1131 | * Delete a subgroup if it is ready to be deleted. | |
1132 | * | |
2951a7a4 | 1133 | * Returns true if the subgroup was deleted. |
3f9c7369 | 1134 | */ |
3dc339cd | 1135 | static bool update_subgroup_check_delete(struct update_subgroup *subgrp) |
3f9c7369 | 1136 | { |
d62a17ae | 1137 | if (!subgrp) |
3dc339cd | 1138 | return false; |
3f9c7369 | 1139 | |
d62a17ae | 1140 | if (!LIST_EMPTY(&(subgrp->peers))) |
3dc339cd | 1141 | return false; |
3f9c7369 | 1142 | |
d62a17ae | 1143 | update_subgroup_delete(subgrp); |
3f9c7369 | 1144 | |
3dc339cd | 1145 | return true; |
3f9c7369 DS |
1146 | } |
1147 | ||
1148 | /* | |
1149 | * update_subgroup_add_peer | |
1150 | * | |
1151 | * @param send_enqueued_packets If true all currently enqueued packets will | |
1152 | * also be sent to the peer. | |
1153 | */ | |
d62a17ae | 1154 | static void update_subgroup_add_peer(struct update_subgroup *subgrp, |
1155 | struct peer_af *paf, | |
1156 | int send_enqueued_pkts) | |
3f9c7369 | 1157 | { |
d62a17ae | 1158 | struct bpacket *pkt; |
3f9c7369 | 1159 | |
d62a17ae | 1160 | if (!subgrp || !paf) |
1161 | return; | |
3f9c7369 | 1162 | |
d62a17ae | 1163 | LIST_INSERT_HEAD(&(subgrp->peers), paf, subgrp_train); |
1164 | paf->subgroup = subgrp; | |
1165 | subgrp->peer_count++; | |
3f9c7369 | 1166 | |
d62a17ae | 1167 | if (bgp_debug_peer_updout_enabled(paf->peer->host)) { |
1168 | UPDGRP_PEER_DBG_EN(subgrp->update_group); | |
1169 | } | |
3f9c7369 | 1170 | |
d62a17ae | 1171 | SUBGRP_INCR_STAT(subgrp, join_events); |
3f9c7369 | 1172 | |
d62a17ae | 1173 | if (send_enqueued_pkts) { |
1174 | pkt = bpacket_queue_first(SUBGRP_PKTQ(subgrp)); | |
1175 | } else { | |
3f9c7369 | 1176 | |
d62a17ae | 1177 | /* |
1178 | * Hang the peer off of the last, placeholder, packet in the | |
1179 | * queue. This means it won't see any of the packets that are | |
1180 | * currently the queue. | |
1181 | */ | |
1182 | pkt = bpacket_queue_last(SUBGRP_PKTQ(subgrp)); | |
1183 | assert(pkt->buffer == NULL); | |
1184 | } | |
3f9c7369 | 1185 | |
d62a17ae | 1186 | bpacket_add_peer(pkt, paf); |
3f9c7369 | 1187 | |
7bfdba54 S |
1188 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) |
1189 | zlog_debug("peer %s added to subgroup s%" PRIu64, | |
1190 | paf->peer->host, subgrp->id); | |
3f9c7369 DS |
1191 | } |
1192 | ||
1193 | /* | |
1194 | * update_subgroup_remove_peer_internal | |
1195 | * | |
1196 | * Internal function that removes a peer from a subgroup, but does not | |
1197 | * delete the subgroup. A call to this function must almost always be | |
1198 | * followed by a call to update_subgroup_check_delete(). | |
1199 | * | |
1200 | * @see update_subgroup_remove_peer | |
1201 | */ | |
d62a17ae | 1202 | static void update_subgroup_remove_peer_internal(struct update_subgroup *subgrp, |
1203 | struct peer_af *paf) | |
3f9c7369 | 1204 | { |
d3e51db0 | 1205 | assert(subgrp && paf && subgrp->update_group); |
3f9c7369 | 1206 | |
d62a17ae | 1207 | if (bgp_debug_peer_updout_enabled(paf->peer->host)) { |
1208 | UPDGRP_PEER_DBG_DIS(subgrp->update_group); | |
1209 | } | |
3f9c7369 | 1210 | |
d62a17ae | 1211 | bpacket_queue_remove_peer(paf); |
1212 | LIST_REMOVE(paf, subgrp_train); | |
1213 | paf->subgroup = NULL; | |
1214 | subgrp->peer_count--; | |
3f9c7369 | 1215 | |
7bfdba54 S |
1216 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) |
1217 | zlog_debug("peer %s deleted from subgroup s%" | |
4882d296 | 1218 | PRIu64 " peer cnt %d", |
7bfdba54 | 1219 | paf->peer->host, subgrp->id, subgrp->peer_count); |
d62a17ae | 1220 | SUBGRP_INCR_STAT(subgrp, prune_events); |
3f9c7369 DS |
1221 | } |
1222 | ||
1223 | /* | |
1224 | * update_subgroup_remove_peer | |
1225 | */ | |
d62a17ae | 1226 | void update_subgroup_remove_peer(struct update_subgroup *subgrp, |
1227 | struct peer_af *paf) | |
3f9c7369 | 1228 | { |
d62a17ae | 1229 | if (!subgrp || !paf) |
1230 | return; | |
3f9c7369 | 1231 | |
d62a17ae | 1232 | update_subgroup_remove_peer_internal(subgrp, paf); |
3f9c7369 | 1233 | |
d62a17ae | 1234 | if (update_subgroup_check_delete(subgrp)) |
1235 | return; | |
3f9c7369 | 1236 | |
d62a17ae | 1237 | /* |
1238 | * The deletion of the peer may have caused some packets to be | |
1239 | * deleted from the subgroup packet queue. Check if the subgroup can | |
1240 | * be merged now. | |
1241 | */ | |
1242 | update_subgroup_check_merge(subgrp, "removed peer from subgroup"); | |
3f9c7369 DS |
1243 | } |
1244 | ||
d62a17ae | 1245 | static struct update_subgroup *update_subgroup_find(struct update_group *updgrp, |
1246 | struct peer_af *paf) | |
3f9c7369 | 1247 | { |
d62a17ae | 1248 | struct update_subgroup *subgrp = NULL; |
1249 | uint64_t version; | |
1250 | ||
1251 | if (paf->subgroup) { | |
1252 | assert(0); | |
1253 | return NULL; | |
1254 | } else | |
1255 | version = 0; | |
1256 | ||
1257 | if (!peer_established(PAF_PEER(paf))) | |
1258 | return NULL; | |
1259 | ||
a2addae8 | 1260 | UPDGRP_FOREACH_SUBGRP (updgrp, subgrp) { |
d62a17ae | 1261 | if (subgrp->version != version |
1262 | || CHECK_FLAG(subgrp->sflags, | |
1263 | SUBGRP_STATUS_DEFAULT_ORIGINATE)) | |
1264 | continue; | |
1265 | ||
1266 | /* | |
1267 | * The version number is not meaningful on a subgroup that needs | |
1268 | * a refresh. | |
1269 | */ | |
1270 | if (update_subgroup_needs_refresh(subgrp)) | |
1271 | continue; | |
1272 | ||
1273 | break; | |
1274 | } | |
1275 | ||
1276 | return subgrp; | |
3f9c7369 DS |
1277 | } |
1278 | ||
1279 | /* | |
1280 | * update_subgroup_ready_for_merge | |
1281 | * | |
2951a7a4 | 1282 | * Returns true if this subgroup is in a state that allows it to be |
3f9c7369 DS |
1283 | * merged into another subgroup. |
1284 | */ | |
3dc339cd | 1285 | static bool update_subgroup_ready_for_merge(struct update_subgroup *subgrp) |
3f9c7369 DS |
1286 | { |
1287 | ||
d62a17ae | 1288 | /* |
1289 | * Not ready if there are any encoded packets waiting to be written | |
1290 | * out to peers. | |
1291 | */ | |
1292 | if (!bpacket_queue_is_empty(SUBGRP_PKTQ(subgrp))) | |
3dc339cd | 1293 | return false; |
d62a17ae | 1294 | |
1295 | /* | |
1296 | * Not ready if there enqueued updates waiting to be encoded. | |
1297 | */ | |
1298 | if (!advertise_list_is_empty(subgrp)) | |
3dc339cd | 1299 | return false; |
d62a17ae | 1300 | |
1301 | /* | |
1302 | * Don't attempt to merge a subgroup that needs a refresh. For one, | |
1303 | * we can't determine if the adj_out of such a group matches that of | |
1304 | * another group. | |
1305 | */ | |
1306 | if (update_subgroup_needs_refresh(subgrp)) | |
3dc339cd | 1307 | return false; |
d62a17ae | 1308 | |
3dc339cd | 1309 | return true; |
3f9c7369 DS |
1310 | } |
1311 | ||
1312 | /* | |
1313 | * update_subgrp_can_merge_into | |
1314 | * | |
2951a7a4 | 1315 | * Returns true if the first subgroup can merge into the second |
3f9c7369 DS |
1316 | * subgroup. |
1317 | */ | |
d62a17ae | 1318 | static int update_subgroup_can_merge_into(struct update_subgroup *subgrp, |
1319 | struct update_subgroup *target) | |
3f9c7369 DS |
1320 | { |
1321 | ||
d62a17ae | 1322 | if (subgrp == target) |
1323 | return 0; | |
3f9c7369 | 1324 | |
d62a17ae | 1325 | /* |
1326 | * Both must have processed the BRIB to the same point in order to | |
1327 | * be merged. | |
1328 | */ | |
1329 | if (subgrp->version != target->version) | |
1330 | return 0; | |
3f9c7369 | 1331 | |
d62a17ae | 1332 | if (CHECK_FLAG(subgrp->sflags, SUBGRP_STATUS_DEFAULT_ORIGINATE) |
1333 | != CHECK_FLAG(target->sflags, SUBGRP_STATUS_DEFAULT_ORIGINATE)) | |
1334 | return 0; | |
f910ef58 | 1335 | |
d62a17ae | 1336 | if (subgrp->adj_count != target->adj_count) |
1337 | return 0; | |
3f9c7369 | 1338 | |
d62a17ae | 1339 | return update_subgroup_ready_for_merge(target); |
3f9c7369 DS |
1340 | } |
1341 | ||
1342 | /* | |
1343 | * update_subgroup_merge | |
1344 | * | |
1345 | * Merge the first subgroup into the second one. | |
1346 | */ | |
d62a17ae | 1347 | static void update_subgroup_merge(struct update_subgroup *subgrp, |
1348 | struct update_subgroup *target, | |
1349 | const char *reason) | |
3f9c7369 | 1350 | { |
d62a17ae | 1351 | struct peer_af *paf; |
1352 | int result; | |
1353 | int peer_count; | |
3f9c7369 | 1354 | |
d62a17ae | 1355 | assert(subgrp->adj_count == target->adj_count); |
3f9c7369 | 1356 | |
d62a17ae | 1357 | peer_count = subgrp->peer_count; |
3f9c7369 | 1358 | |
d62a17ae | 1359 | while (1) { |
1360 | paf = LIST_FIRST(&subgrp->peers); | |
1361 | if (!paf) | |
1362 | break; | |
3f9c7369 | 1363 | |
d62a17ae | 1364 | update_subgroup_remove_peer_internal(subgrp, paf); |
3f9c7369 | 1365 | |
d62a17ae | 1366 | /* |
1367 | * Add the peer to the target subgroup, while making sure that | |
1368 | * any currently enqueued packets won't be sent to it. Enqueued | |
1369 | * packets could, for example, result in an unnecessary withdraw | |
1370 | * followed by an advertise. | |
1371 | */ | |
1372 | update_subgroup_add_peer(target, paf, 0); | |
1373 | } | |
3f9c7369 | 1374 | |
d62a17ae | 1375 | SUBGRP_INCR_STAT(target, merge_events); |
3f9c7369 | 1376 | |
d62a17ae | 1377 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) |
6cde4b45 | 1378 | zlog_debug("u%" PRIu64 ":s%" PRIu64" (%d peers) merged into u%" PRIu64 ":s%" PRIu64", trigger: %s", |
d62a17ae | 1379 | subgrp->update_group->id, subgrp->id, peer_count, |
1380 | target->update_group->id, target->id, | |
1381 | reason ? reason : "unknown"); | |
3f9c7369 | 1382 | |
d62a17ae | 1383 | result = update_subgroup_check_delete(subgrp); |
1384 | assert(result); | |
3f9c7369 DS |
1385 | } |
1386 | ||
1387 | /* | |
1388 | * update_subgroup_check_merge | |
1389 | * | |
1390 | * Merge this subgroup into another subgroup if possible. | |
1391 | * | |
2951a7a4 | 1392 | * Returns true if the subgroup has been merged. The subgroup pointer |
3f9c7369 DS |
1393 | * should not be accessed in this case. |
1394 | */ | |
3dc339cd DA |
1395 | bool update_subgroup_check_merge(struct update_subgroup *subgrp, |
1396 | const char *reason) | |
3f9c7369 | 1397 | { |
d62a17ae | 1398 | struct update_subgroup *target; |
3f9c7369 | 1399 | |
d62a17ae | 1400 | if (!update_subgroup_ready_for_merge(subgrp)) |
3dc339cd | 1401 | return false; |
3f9c7369 | 1402 | |
d62a17ae | 1403 | /* |
1404 | * Look for a subgroup to merge into. | |
1405 | */ | |
a2addae8 | 1406 | UPDGRP_FOREACH_SUBGRP (subgrp->update_group, target) { |
d62a17ae | 1407 | if (update_subgroup_can_merge_into(subgrp, target)) |
1408 | break; | |
1409 | } | |
3f9c7369 | 1410 | |
d62a17ae | 1411 | if (!target) |
3dc339cd | 1412 | return false; |
3f9c7369 | 1413 | |
d62a17ae | 1414 | update_subgroup_merge(subgrp, target, reason); |
3dc339cd | 1415 | return true; |
3f9c7369 DS |
1416 | } |
1417 | ||
d62a17ae | 1418 | /* |
9d303b37 DL |
1419 | * update_subgroup_merge_check_thread_cb |
1420 | */ | |
e6685141 | 1421 | static void update_subgroup_merge_check_thread_cb(struct event *thread) |
3f9c7369 | 1422 | { |
d62a17ae | 1423 | struct update_subgroup *subgrp; |
3f9c7369 | 1424 | |
e16d030c | 1425 | subgrp = EVENT_ARG(thread); |
3f9c7369 | 1426 | |
d62a17ae | 1427 | subgrp->t_merge_check = NULL; |
3f9c7369 | 1428 | |
d62a17ae | 1429 | update_subgroup_check_merge(subgrp, "triggered merge check"); |
3f9c7369 DS |
1430 | } |
1431 | ||
1432 | /* | |
1433 | * update_subgroup_trigger_merge_check | |
1434 | * | |
1435 | * Triggers a call to update_subgroup_check_merge() on a clean context. | |
1436 | * | |
1437 | * @param force If true, the merge check will be triggered even if the | |
1438 | * subgroup doesn't currently look ready for a merge. | |
1439 | * | |
2951a7a4 | 1440 | * Returns true if a merge check will be performed shortly. |
3f9c7369 | 1441 | */ |
3dc339cd DA |
1442 | bool update_subgroup_trigger_merge_check(struct update_subgroup *subgrp, |
1443 | int force) | |
3f9c7369 | 1444 | { |
d62a17ae | 1445 | if (subgrp->t_merge_check) |
3dc339cd | 1446 | return true; |
3f9c7369 | 1447 | |
d62a17ae | 1448 | if (!force && !update_subgroup_ready_for_merge(subgrp)) |
3dc339cd | 1449 | return false; |
3f9c7369 | 1450 | |
d62a17ae | 1451 | subgrp->t_merge_check = NULL; |
907a2395 DS |
1452 | event_add_timer_msec(bm->master, update_subgroup_merge_check_thread_cb, |
1453 | subgrp, 0, &subgrp->t_merge_check); | |
3f9c7369 | 1454 | |
d62a17ae | 1455 | SUBGRP_INCR_STAT(subgrp, merge_checks_triggered); |
3f9c7369 | 1456 | |
3dc339cd | 1457 | return true; |
3f9c7369 DS |
1458 | } |
1459 | ||
1460 | /* | |
1461 | * update_subgroup_copy_adj_out | |
1462 | * | |
1463 | * Helper function that clones the adj out (state about advertised | |
1464 | * routes) from one subgroup to another. It assumes that the adj out | |
1465 | * of the target subgroup is empty. | |
1466 | */ | |
d62a17ae | 1467 | static void update_subgroup_copy_adj_out(struct update_subgroup *source, |
1468 | struct update_subgroup *dest) | |
3f9c7369 | 1469 | { |
d62a17ae | 1470 | struct bgp_adj_out *aout, *aout_copy; |
1471 | ||
a2addae8 | 1472 | SUBGRP_FOREACH_ADJ (source, aout) { |
d62a17ae | 1473 | /* |
1474 | * Copy the adj out. | |
1475 | */ | |
9bcb3eef DS |
1476 | aout_copy = bgp_adj_out_alloc(dest, aout->dest, |
1477 | aout->addpath_tx_id); | |
d62a17ae | 1478 | aout_copy->attr = |
7c87afac | 1479 | aout->attr ? bgp_attr_intern(aout->attr) : NULL; |
d62a17ae | 1480 | } |
0ab7b206 AD |
1481 | |
1482 | dest->scount = source->scount; | |
3f9c7369 DS |
1483 | } |
1484 | ||
1485 | /* | |
1486 | * update_subgroup_copy_packets | |
1487 | * | |
1488 | * Copy packets after and including the given packet to the subgroup | |
1489 | * 'dest'. | |
1490 | * | |
1491 | * Returns the number of packets copied. | |
1492 | */ | |
d62a17ae | 1493 | static int update_subgroup_copy_packets(struct update_subgroup *dest, |
1494 | struct bpacket *pkt) | |
3f9c7369 | 1495 | { |
d62a17ae | 1496 | int count; |
1497 | ||
1498 | count = 0; | |
1499 | while (pkt && pkt->buffer) { | |
1500 | bpacket_queue_add(SUBGRP_PKTQ(dest), stream_dup(pkt->buffer), | |
1501 | &pkt->arr); | |
1502 | count++; | |
1503 | pkt = bpacket_next(pkt); | |
1504 | } | |
3f9c7369 | 1505 | |
d62a17ae | 1506 | return count; |
3f9c7369 DS |
1507 | } |
1508 | ||
3dc339cd DA |
1509 | static bool updgrp_prefix_list_update(struct update_group *updgrp, |
1510 | const char *name) | |
3f9c7369 | 1511 | { |
d62a17ae | 1512 | struct peer *peer; |
1513 | struct bgp_filter *filter; | |
1514 | ||
1515 | peer = UPDGRP_PEER(updgrp); | |
1516 | filter = &peer->filter[UPDGRP_AFI(updgrp)][UPDGRP_SAFI(updgrp)]; | |
1517 | ||
1518 | if (PREFIX_LIST_OUT_NAME(filter) | |
1519 | && (strcmp(name, PREFIX_LIST_OUT_NAME(filter)) == 0)) { | |
1520 | PREFIX_LIST_OUT(filter) = prefix_list_lookup( | |
1521 | UPDGRP_AFI(updgrp), PREFIX_LIST_OUT_NAME(filter)); | |
3dc339cd | 1522 | return true; |
d62a17ae | 1523 | } |
3dc339cd | 1524 | return false; |
3f9c7369 DS |
1525 | } |
1526 | ||
3dc339cd DA |
1527 | static bool updgrp_filter_list_update(struct update_group *updgrp, |
1528 | const char *name) | |
3f9c7369 | 1529 | { |
d62a17ae | 1530 | struct peer *peer; |
1531 | struct bgp_filter *filter; | |
1532 | ||
1533 | peer = UPDGRP_PEER(updgrp); | |
1534 | filter = &peer->filter[UPDGRP_AFI(updgrp)][UPDGRP_SAFI(updgrp)]; | |
1535 | ||
1536 | if (FILTER_LIST_OUT_NAME(filter) | |
1537 | && (strcmp(name, FILTER_LIST_OUT_NAME(filter)) == 0)) { | |
1538 | FILTER_LIST_OUT(filter) = | |
1539 | as_list_lookup(FILTER_LIST_OUT_NAME(filter)); | |
3dc339cd | 1540 | return true; |
d62a17ae | 1541 | } |
3dc339cd | 1542 | return false; |
3f9c7369 DS |
1543 | } |
1544 | ||
3dc339cd DA |
1545 | static bool updgrp_distribute_list_update(struct update_group *updgrp, |
1546 | const char *name) | |
3f9c7369 | 1547 | { |
d62a17ae | 1548 | struct peer *peer; |
1549 | struct bgp_filter *filter; | |
1550 | ||
1551 | peer = UPDGRP_PEER(updgrp); | |
1552 | filter = &peer->filter[UPDGRP_AFI(updgrp)][UPDGRP_SAFI(updgrp)]; | |
1553 | ||
1554 | if (DISTRIBUTE_OUT_NAME(filter) | |
1555 | && (strcmp(name, DISTRIBUTE_OUT_NAME(filter)) == 0)) { | |
1556 | DISTRIBUTE_OUT(filter) = access_list_lookup( | |
1557 | UPDGRP_AFI(updgrp), DISTRIBUTE_OUT_NAME(filter)); | |
3dc339cd | 1558 | return true; |
d62a17ae | 1559 | } |
3dc339cd | 1560 | return false; |
3f9c7369 DS |
1561 | } |
1562 | ||
d62a17ae | 1563 | static int updgrp_route_map_update(struct update_group *updgrp, |
1564 | const char *name, int *def_rmap_changed) | |
3f9c7369 | 1565 | { |
d62a17ae | 1566 | struct peer *peer; |
1567 | struct bgp_filter *filter; | |
1568 | int changed = 0; | |
1569 | afi_t afi; | |
1570 | safi_t safi; | |
1571 | ||
1572 | peer = UPDGRP_PEER(updgrp); | |
1573 | afi = UPDGRP_AFI(updgrp); | |
1574 | safi = UPDGRP_SAFI(updgrp); | |
1575 | filter = &peer->filter[afi][safi]; | |
1576 | ||
1577 | if (ROUTE_MAP_OUT_NAME(filter) | |
1578 | && (strcmp(name, ROUTE_MAP_OUT_NAME(filter)) == 0)) { | |
1579 | ROUTE_MAP_OUT(filter) = route_map_lookup_by_name(name); | |
1580 | ||
1581 | changed = 1; | |
1582 | } | |
1583 | ||
1584 | if (UNSUPPRESS_MAP_NAME(filter) | |
1585 | && (strcmp(name, UNSUPPRESS_MAP_NAME(filter)) == 0)) { | |
1586 | UNSUPPRESS_MAP(filter) = route_map_lookup_by_name(name); | |
1587 | changed = 1; | |
1588 | } | |
1589 | ||
1590 | /* process default-originate route-map */ | |
1591 | if (peer->default_rmap[afi][safi].name | |
1592 | && (strcmp(name, peer->default_rmap[afi][safi].name) == 0)) { | |
1593 | peer->default_rmap[afi][safi].map = | |
1594 | route_map_lookup_by_name(name); | |
1595 | if (def_rmap_changed) | |
1596 | *def_rmap_changed = 1; | |
1597 | } | |
1598 | return changed; | |
3f9c7369 DS |
1599 | } |
1600 | ||
1601 | /* | |
1602 | * hash iteration callback function to process a policy change for an | |
1603 | * update group. Check if the changed policy matches the updgrp's | |
1604 | * outbound route-map or unsuppress-map or default-originate map or | |
1605 | * filter-list or prefix-list or distribute-list. | |
1606 | * Trigger update generation accordingly. | |
1607 | */ | |
d62a17ae | 1608 | static int updgrp_policy_update_walkcb(struct update_group *updgrp, void *arg) |
3f9c7369 | 1609 | { |
d62a17ae | 1610 | struct updwalk_context *ctx = arg; |
1611 | struct update_subgroup *subgrp; | |
1612 | int changed = 0; | |
1613 | int def_changed = 0; | |
1614 | ||
1615 | if (!updgrp || !ctx || !ctx->policy_name) | |
1616 | return UPDWALK_CONTINUE; | |
1617 | ||
1618 | switch (ctx->policy_type) { | |
1619 | case BGP_POLICY_ROUTE_MAP: | |
1620 | changed = updgrp_route_map_update(updgrp, ctx->policy_name, | |
1621 | &def_changed); | |
1622 | break; | |
1623 | case BGP_POLICY_FILTER_LIST: | |
1624 | changed = updgrp_filter_list_update(updgrp, ctx->policy_name); | |
1625 | break; | |
1626 | case BGP_POLICY_PREFIX_LIST: | |
1627 | changed = updgrp_prefix_list_update(updgrp, ctx->policy_name); | |
1628 | break; | |
1629 | case BGP_POLICY_DISTRIBUTE_LIST: | |
1630 | changed = | |
1631 | updgrp_distribute_list_update(updgrp, ctx->policy_name); | |
1632 | break; | |
1633 | default: | |
1634 | break; | |
1635 | } | |
1636 | ||
1637 | /* If not doing route update, return after updating "config" */ | |
1638 | if (!ctx->policy_route_update) | |
1639 | return UPDWALK_CONTINUE; | |
1640 | ||
1641 | /* If nothing has changed, return after updating "config" */ | |
1642 | if (!changed && !def_changed) | |
1643 | return UPDWALK_CONTINUE; | |
1644 | ||
1645 | /* | |
1646 | * If something has changed, at the beginning of a route-map | |
1647 | * modification | |
1648 | * event, mark each subgroup's needs-refresh bit. For one, it signals to | |
1649 | * whoever that the subgroup needs a refresh. Second, it prevents | |
1650 | * premature | |
1651 | * merge of this subgroup with another before a complete (outbound) | |
1652 | * refresh. | |
1653 | */ | |
1654 | if (ctx->policy_event_start_flag) { | |
a2addae8 | 1655 | UPDGRP_FOREACH_SUBGRP (updgrp, subgrp) { |
d62a17ae | 1656 | update_subgroup_set_needs_refresh(subgrp, 1); |
1657 | } | |
1658 | return UPDWALK_CONTINUE; | |
1659 | } | |
1660 | ||
a2addae8 | 1661 | UPDGRP_FOREACH_SUBGRP (updgrp, subgrp) { |
2adac256 DA |
1662 | /* Avoid supressing duplicate routes later |
1663 | * when processing in subgroup_announce_table(). | |
1664 | */ | |
1665 | SET_FLAG(subgrp->sflags, SUBGRP_STATUS_FORCE_UPDATES); | |
1666 | ||
d62a17ae | 1667 | if (changed) { |
1668 | if (bgp_debug_update(NULL, NULL, updgrp, 0)) | |
1669 | zlog_debug( | |
6cde4b45 | 1670 | "u%" PRIu64 ":s%" PRIu64" announcing routes upon policy %s (type %d) change", |
d62a17ae | 1671 | updgrp->id, subgrp->id, |
1672 | ctx->policy_name, ctx->policy_type); | |
1673 | subgroup_announce_route(subgrp); | |
1674 | } | |
1675 | if (def_changed) { | |
1676 | if (bgp_debug_update(NULL, NULL, updgrp, 0)) | |
1677 | zlog_debug( | |
6cde4b45 | 1678 | "u%" PRIu64 ":s%" PRIu64" announcing default upon default routemap %s change", |
d62a17ae | 1679 | updgrp->id, subgrp->id, |
1680 | ctx->policy_name); | |
a9ae9fb5 AR |
1681 | if (route_map_lookup_by_name(ctx->policy_name)) { |
1682 | /* | |
1683 | * When there is change in routemap, this flow | |
1684 | * is triggered. the routemap is still present | |
1685 | * in lib, hence its a update flow. The flag | |
1686 | * needs to be unset. | |
1687 | */ | |
1688 | UNSET_FLAG(subgrp->sflags, | |
1689 | SUBGRP_STATUS_DEFAULT_ORIGINATE); | |
1690 | subgroup_default_originate(subgrp, 0); | |
1691 | } else { | |
1692 | /* | |
1693 | * This is a explicit withdraw, since the | |
1694 | * routemap is not present in routemap lib. need | |
1695 | * to pass 1 for withdraw arg. | |
1696 | */ | |
1697 | subgroup_default_originate(subgrp, 1); | |
1698 | } | |
d62a17ae | 1699 | } |
1700 | update_subgroup_set_needs_refresh(subgrp, 0); | |
1701 | } | |
1702 | return UPDWALK_CONTINUE; | |
3f9c7369 DS |
1703 | } |
1704 | ||
e3b78da8 | 1705 | static int update_group_walkcb(struct hash_bucket *bucket, void *arg) |
3f9c7369 | 1706 | { |
e3b78da8 | 1707 | struct update_group *updgrp = bucket->data; |
d62a17ae | 1708 | struct updwalk_context *wctx = arg; |
1709 | int ret = (*wctx->cb)(updgrp, wctx->context); | |
1710 | return ret; | |
3f9c7369 DS |
1711 | } |
1712 | ||
d62a17ae | 1713 | static int update_group_periodic_merge_walkcb(struct update_group *updgrp, |
1714 | void *arg) | |
3f9c7369 | 1715 | { |
d62a17ae | 1716 | struct update_subgroup *subgrp; |
1717 | struct update_subgroup *tmp_subgrp; | |
1718 | const char *reason = arg; | |
3f9c7369 | 1719 | |
a2addae8 RW |
1720 | UPDGRP_FOREACH_SUBGRP_SAFE (updgrp, subgrp, tmp_subgrp) |
1721 | update_subgroup_check_merge(subgrp, reason); | |
d62a17ae | 1722 | return UPDWALK_CONTINUE; |
3f9c7369 DS |
1723 | } |
1724 | ||
1725 | /******************** | |
1726 | * PUBLIC FUNCTIONS | |
1727 | ********************/ | |
1728 | ||
1729 | /* | |
1730 | * trigger function when a policy (route-map/filter-list/prefix-list/ | |
1731 | * distribute-list etc.) content changes. Go through all the | |
1732 | * update groups and process the change. | |
1733 | * | |
1734 | * bgp: the bgp instance | |
1735 | * ptype: the type of policy that got modified, see bgpd.h | |
1736 | * pname: name of the policy | |
1737 | * route_update: flag to control if an automatic update generation should | |
1738 | * occur | |
1739 | * start_event: flag that indicates if it's the beginning of the change. | |
1740 | * Esp. when the user is changing the content interactively | |
1741 | * over multiple statements. Useful to set dirty flag on | |
1742 | * update groups. | |
1743 | */ | |
d54f55f2 | 1744 | void update_group_policy_update(struct bgp *bgp, enum bgp_policy_type ptype, |
f1aa4929 | 1745 | const char *pname, bool route_update, |
d62a17ae | 1746 | int start_event) |
3f9c7369 | 1747 | { |
d62a17ae | 1748 | struct updwalk_context ctx; |
3f9c7369 | 1749 | |
d62a17ae | 1750 | memset(&ctx, 0, sizeof(ctx)); |
1751 | ctx.policy_type = ptype; | |
1752 | ctx.policy_name = pname; | |
1753 | ctx.policy_route_update = route_update; | |
1754 | ctx.policy_event_start_flag = start_event; | |
1755 | ctx.flags = 0; | |
3f9c7369 | 1756 | |
d62a17ae | 1757 | update_group_walk(bgp, updgrp_policy_update_walkcb, &ctx); |
3f9c7369 DS |
1758 | } |
1759 | ||
1760 | /* | |
1761 | * update_subgroup_split_peer | |
1762 | * | |
1763 | * Ensure that the given peer is in a subgroup of its own in the | |
1764 | * specified update group. | |
1765 | */ | |
d62a17ae | 1766 | void update_subgroup_split_peer(struct peer_af *paf, |
1767 | struct update_group *updgrp) | |
3f9c7369 | 1768 | { |
d62a17ae | 1769 | struct update_subgroup *old_subgrp, *subgrp; |
1770 | uint64_t old_id; | |
1771 | ||
1772 | ||
1773 | old_subgrp = paf->subgroup; | |
1774 | ||
1775 | if (!updgrp) | |
1776 | updgrp = old_subgrp->update_group; | |
1777 | ||
1778 | /* | |
1779 | * If the peer is alone in its subgroup, reuse the existing | |
1780 | * subgroup. | |
1781 | */ | |
1782 | if (old_subgrp->peer_count == 1) { | |
1783 | if (updgrp == old_subgrp->update_group) | |
1784 | return; | |
1785 | ||
1786 | subgrp = old_subgrp; | |
1787 | old_id = old_subgrp->update_group->id; | |
1788 | ||
1789 | if (bgp_debug_peer_updout_enabled(paf->peer->host)) { | |
1790 | UPDGRP_PEER_DBG_DIS(old_subgrp->update_group); | |
1791 | } | |
1792 | ||
1793 | update_group_remove_subgroup(old_subgrp->update_group, | |
1794 | old_subgrp); | |
1795 | update_group_add_subgroup(updgrp, subgrp); | |
1796 | ||
1797 | if (bgp_debug_peer_updout_enabled(paf->peer->host)) { | |
1798 | UPDGRP_PEER_DBG_EN(updgrp); | |
1799 | } | |
1800 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) | |
6cde4b45 | 1801 | zlog_debug("u%" PRIu64 ":s%" PRIu64" peer %s moved to u%" PRIu64 ":s%" PRIu64, |
d62a17ae | 1802 | old_id, subgrp->id, paf->peer->host, |
1803 | updgrp->id, subgrp->id); | |
1804 | ||
1805 | /* | |
1806 | * The state of the subgroup (adj_out, advs, packet queue etc) | |
1807 | * is consistent internally, but may not be identical to other | |
1808 | * subgroups in the new update group even if the version number | |
1809 | * matches up. Make sure a full refresh is done before the | |
1810 | * subgroup is merged with another. | |
1811 | */ | |
1812 | update_subgroup_set_needs_refresh(subgrp, 1); | |
1813 | ||
1814 | SUBGRP_INCR_STAT(subgrp, updgrp_switch_events); | |
1815 | return; | |
1816 | } | |
3f9c7369 | 1817 | |
d62a17ae | 1818 | /* |
1819 | * Create a new subgroup under the specified update group, and copy | |
1820 | * over relevant state to it. | |
1821 | */ | |
1822 | subgrp = update_subgroup_create(updgrp); | |
1823 | update_subgroup_inherit_info(subgrp, old_subgrp); | |
1824 | ||
1825 | subgrp->split_from.update_group_id = old_subgrp->update_group->id; | |
1826 | subgrp->split_from.subgroup_id = old_subgrp->id; | |
1827 | ||
1828 | /* | |
1829 | * Copy out relevant state from the old subgroup. | |
1830 | */ | |
1831 | update_subgroup_copy_adj_out(paf->subgroup, subgrp); | |
1832 | update_subgroup_copy_packets(subgrp, paf->next_pkt_to_send); | |
1833 | ||
1834 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) | |
6cde4b45 | 1835 | zlog_debug("u%" PRIu64 ":s%" PRIu64" peer %s split and moved into u%" PRIu64":s%" PRIu64, |
d62a17ae | 1836 | paf->subgroup->update_group->id, paf->subgroup->id, |
1837 | paf->peer->host, updgrp->id, subgrp->id); | |
1838 | ||
1839 | SUBGRP_INCR_STAT(paf->subgroup, split_events); | |
1840 | ||
1841 | /* | |
1842 | * Since queued advs were left behind, this new subgroup needs a | |
1843 | * refresh. | |
1844 | */ | |
1845 | update_subgroup_set_needs_refresh(subgrp, 1); | |
1846 | ||
1847 | /* | |
1848 | * Remove peer from old subgroup, and add it to the new one. | |
1849 | */ | |
1850 | update_subgroup_remove_peer(paf->subgroup, paf); | |
1851 | ||
1852 | update_subgroup_add_peer(subgrp, paf, 1); | |
3f9c7369 DS |
1853 | } |
1854 | ||
d62a17ae | 1855 | void update_bgp_group_init(struct bgp *bgp) |
3f9c7369 | 1856 | { |
d62a17ae | 1857 | int afid; |
3f9c7369 | 1858 | |
a2addae8 | 1859 | AF_FOREACH (afid) |
3f65c5b1 | 1860 | bgp->update_groups[afid] = |
996c9314 | 1861 | hash_create(updgrp_hash_key_make, updgrp_hash_cmp, |
3f65c5b1 | 1862 | "BGP Update Group Hash"); |
3f9c7369 DS |
1863 | } |
1864 | ||
d62a17ae | 1865 | void update_bgp_group_free(struct bgp *bgp) |
3d68677e | 1866 | { |
d62a17ae | 1867 | int afid; |
1868 | ||
a2addae8 | 1869 | AF_FOREACH (afid) { |
d62a17ae | 1870 | if (bgp->update_groups[afid]) { |
1871 | hash_free(bgp->update_groups[afid]); | |
1872 | bgp->update_groups[afid] = NULL; | |
1873 | } | |
1874 | } | |
3d68677e DS |
1875 | } |
1876 | ||
d62a17ae | 1877 | void update_group_show(struct bgp *bgp, afi_t afi, safi_t safi, struct vty *vty, |
fa5a9276 | 1878 | uint64_t subgrp_id, bool uj) |
3f9c7369 | 1879 | { |
d62a17ae | 1880 | struct updwalk_context ctx; |
fa5a9276 AR |
1881 | json_object *json_vrf_obj = NULL; |
1882 | ||
d62a17ae | 1883 | memset(&ctx, 0, sizeof(ctx)); |
1884 | ctx.vty = vty; | |
1885 | ctx.subgrp_id = subgrp_id; | |
fa5a9276 AR |
1886 | ctx.uj = uj; |
1887 | ||
1888 | if (uj) { | |
1889 | ctx.json_updategrps = json_object_new_object(); | |
1890 | json_vrf_obj = json_object_new_object(); | |
1891 | } | |
8fe8a7f6 | 1892 | |
d62a17ae | 1893 | update_group_af_walk(bgp, afi, safi, update_group_show_walkcb, &ctx); |
fa5a9276 AR |
1894 | |
1895 | if (uj) { | |
1896 | const char *vname; | |
1897 | ||
1898 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
1899 | vname = VRF_DEFAULT_NAME; | |
1900 | else | |
1901 | vname = bgp->name; | |
1902 | json_object_object_add(json_vrf_obj, vname, | |
1903 | ctx.json_updategrps); | |
1904 | vty_json(vty, json_vrf_obj); | |
1905 | } | |
3f9c7369 DS |
1906 | } |
1907 | ||
1908 | /* | |
1909 | * update_group_show_stats | |
1910 | * | |
1911 | * Show global statistics about update groups. | |
1912 | */ | |
d62a17ae | 1913 | void update_group_show_stats(struct bgp *bgp, struct vty *vty) |
3f9c7369 | 1914 | { |
d62a17ae | 1915 | vty_out(vty, "Update groups created: %u\n", |
1916 | bgp->update_group_stats.updgrps_created); | |
1917 | vty_out(vty, "Update groups deleted: %u\n", | |
1918 | bgp->update_group_stats.updgrps_deleted); | |
1919 | vty_out(vty, "Update subgroups created: %u\n", | |
1920 | bgp->update_group_stats.subgrps_created); | |
1921 | vty_out(vty, "Update subgroups deleted: %u\n", | |
1922 | bgp->update_group_stats.subgrps_deleted); | |
1923 | vty_out(vty, "Join events: %u\n", bgp->update_group_stats.join_events); | |
1924 | vty_out(vty, "Prune events: %u\n", | |
1925 | bgp->update_group_stats.prune_events); | |
1926 | vty_out(vty, "Merge events: %u\n", | |
1927 | bgp->update_group_stats.merge_events); | |
1928 | vty_out(vty, "Split events: %u\n", | |
1929 | bgp->update_group_stats.split_events); | |
1930 | vty_out(vty, "Update group switch events: %u\n", | |
1931 | bgp->update_group_stats.updgrp_switch_events); | |
1932 | vty_out(vty, "Peer route refreshes combined: %u\n", | |
1933 | bgp->update_group_stats.peer_refreshes_combined); | |
1934 | vty_out(vty, "Merge checks triggered: %u\n", | |
1935 | bgp->update_group_stats.merge_checks_triggered); | |
3f9c7369 DS |
1936 | } |
1937 | ||
1938 | /* | |
1939 | * update_group_adjust_peer | |
1940 | */ | |
d62a17ae | 1941 | void update_group_adjust_peer(struct peer_af *paf) |
3f9c7369 | 1942 | { |
d62a17ae | 1943 | struct update_group *updgrp; |
1944 | struct update_subgroup *subgrp, *old_subgrp; | |
1945 | struct peer *peer; | |
1946 | ||
1947 | if (!paf) | |
1948 | return; | |
1949 | ||
1950 | peer = PAF_PEER(paf); | |
1951 | if (!peer_established(peer)) { | |
1952 | return; | |
1953 | } | |
1954 | ||
1955 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE)) { | |
1956 | return; | |
3f9c7369 | 1957 | } |
3f9c7369 | 1958 | |
d62a17ae | 1959 | if (!peer->afc_nego[paf->afi][paf->safi]) { |
1960 | return; | |
1961 | } | |
3f9c7369 | 1962 | |
d62a17ae | 1963 | updgrp = update_group_find(paf); |
1964 | if (!updgrp) { | |
1965 | updgrp = update_group_create(paf); | |
1966 | if (!updgrp) { | |
e50f7cfd | 1967 | flog_err(EC_BGP_UPDGRP_CREATE, |
1c50c1c0 QY |
1968 | "couldn't create update group for peer %s", |
1969 | paf->peer->host); | |
d62a17ae | 1970 | return; |
1971 | } | |
1972 | } | |
3f9c7369 | 1973 | |
d62a17ae | 1974 | old_subgrp = paf->subgroup; |
3f9c7369 | 1975 | |
d62a17ae | 1976 | if (old_subgrp) { |
3f9c7369 | 1977 | |
d62a17ae | 1978 | /* |
1979 | * If the update group of the peer is unchanged, the peer can | |
1980 | * stay | |
1981 | * in its existing subgroup and we're done. | |
1982 | */ | |
1983 | if (old_subgrp->update_group == updgrp) | |
1984 | return; | |
1985 | ||
1986 | /* | |
1987 | * The peer is switching between update groups. Put it in its | |
1988 | * own subgroup under the new update group. | |
1989 | */ | |
1990 | update_subgroup_split_peer(paf, updgrp); | |
1991 | return; | |
1992 | } | |
1993 | ||
1994 | subgrp = update_subgroup_find(updgrp, paf); | |
1995 | if (!subgrp) { | |
1996 | subgrp = update_subgroup_create(updgrp); | |
1997 | if (!subgrp) | |
1998 | return; | |
1999 | } | |
3f9c7369 | 2000 | |
d62a17ae | 2001 | update_subgroup_add_peer(subgrp, paf, 1); |
2002 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) | |
2003 | zlog_debug("u%" PRIu64 ":s%" PRIu64 " add peer %s", updgrp->id, | |
2004 | subgrp->id, paf->peer->host); | |
2005 | ||
2006 | return; | |
3f9c7369 DS |
2007 | } |
2008 | ||
d62a17ae | 2009 | int update_group_adjust_soloness(struct peer *peer, int set) |
3f9c7369 | 2010 | { |
d62a17ae | 2011 | struct peer_group *group; |
2012 | struct listnode *node, *nnode; | |
2013 | ||
2014 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
2015 | peer_lonesoul_or_not(peer, set); | |
feb17238 | 2016 | if (peer_established(peer)) |
d62a17ae | 2017 | bgp_announce_route_all(peer); |
2018 | } else { | |
2019 | group = peer->group; | |
2020 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { | |
2021 | peer_lonesoul_or_not(peer, set); | |
feb17238 | 2022 | if (peer_established(peer)) |
d62a17ae | 2023 | bgp_announce_route_all(peer); |
2024 | } | |
2025 | } | |
2026 | return 0; | |
3f9c7369 DS |
2027 | } |
2028 | ||
2029 | /* | |
2030 | * update_subgroup_rib | |
2031 | */ | |
d62a17ae | 2032 | struct bgp_table *update_subgroup_rib(struct update_subgroup *subgrp) |
3f9c7369 | 2033 | { |
d62a17ae | 2034 | struct bgp *bgp; |
3f9c7369 | 2035 | |
d62a17ae | 2036 | bgp = SUBGRP_INST(subgrp); |
2037 | if (!bgp) | |
2038 | return NULL; | |
3f9c7369 | 2039 | |
d62a17ae | 2040 | return bgp->rib[SUBGRP_AFI(subgrp)][SUBGRP_SAFI(subgrp)]; |
3f9c7369 DS |
2041 | } |
2042 | ||
d62a17ae | 2043 | void update_group_af_walk(struct bgp *bgp, afi_t afi, safi_t safi, |
2044 | updgrp_walkcb cb, void *ctx) | |
3f9c7369 | 2045 | { |
d62a17ae | 2046 | struct updwalk_context wctx; |
2047 | int afid; | |
3f9c7369 | 2048 | |
d62a17ae | 2049 | if (!bgp) |
2050 | return; | |
2051 | afid = afindex(afi, safi); | |
2052 | if (afid >= BGP_AF_MAX) | |
2053 | return; | |
3f9c7369 | 2054 | |
d62a17ae | 2055 | memset(&wctx, 0, sizeof(wctx)); |
2056 | wctx.cb = cb; | |
2057 | wctx.context = ctx; | |
0de4848d | 2058 | |
d62a17ae | 2059 | if (bgp->update_groups[afid]) |
2060 | hash_walk(bgp->update_groups[afid], update_group_walkcb, &wctx); | |
3f9c7369 DS |
2061 | } |
2062 | ||
d62a17ae | 2063 | void update_group_walk(struct bgp *bgp, updgrp_walkcb cb, void *ctx) |
3f9c7369 | 2064 | { |
d62a17ae | 2065 | afi_t afi; |
2066 | safi_t safi; | |
3f9c7369 | 2067 | |
a2addae8 | 2068 | FOREACH_AFI_SAFI (afi, safi) { |
d62a17ae | 2069 | update_group_af_walk(bgp, afi, safi, cb, ctx); |
2070 | } | |
3f9c7369 DS |
2071 | } |
2072 | ||
d62a17ae | 2073 | void update_group_periodic_merge(struct bgp *bgp) |
3f9c7369 | 2074 | { |
d62a17ae | 2075 | char reason[] = "periodic merge check"; |
3f9c7369 | 2076 | |
d62a17ae | 2077 | update_group_walk(bgp, update_group_periodic_merge_walkcb, |
2078 | (void *)reason); | |
3f9c7369 DS |
2079 | } |
2080 | ||
0de4848d DS |
2081 | static int |
2082 | update_group_default_originate_route_map_walkcb(struct update_group *updgrp, | |
d62a17ae | 2083 | void *arg) |
0de4848d | 2084 | { |
d62a17ae | 2085 | struct update_subgroup *subgrp; |
2086 | struct peer *peer; | |
2087 | afi_t afi; | |
2088 | safi_t safi; | |
2089 | ||
a2addae8 | 2090 | UPDGRP_FOREACH_SUBGRP (updgrp, subgrp) { |
d62a17ae | 2091 | peer = SUBGRP_PEER(subgrp); |
2092 | afi = SUBGRP_AFI(subgrp); | |
2093 | safi = SUBGRP_SAFI(subgrp); | |
2094 | ||
2095 | if (peer->default_rmap[afi][safi].name) { | |
a9ae9fb5 AR |
2096 | /* |
2097 | * When there is change in routemap this flow will | |
2098 | * be triggered. We need to unset the Flag to ensure | |
2099 | * the update flow gets triggered. | |
2100 | */ | |
2101 | UNSET_FLAG(subgrp->sflags, | |
2102 | SUBGRP_STATUS_DEFAULT_ORIGINATE); | |
d62a17ae | 2103 | subgroup_default_originate(subgrp, 0); |
2104 | } | |
2105 | } | |
2106 | ||
2107 | return UPDWALK_CONTINUE; | |
0de4848d DS |
2108 | } |
2109 | ||
e6685141 | 2110 | void update_group_refresh_default_originate_route_map(struct event *thread) |
0de4848d | 2111 | { |
d62a17ae | 2112 | struct bgp *bgp; |
2113 | char reason[] = "refresh default-originate route-map"; | |
0de4848d | 2114 | |
e16d030c | 2115 | bgp = EVENT_ARG(thread); |
d62a17ae | 2116 | update_group_walk(bgp, update_group_default_originate_route_map_walkcb, |
2117 | reason); | |
e16d030c | 2118 | EVENT_OFF(bgp->t_rmap_def_originate_eval); |
d62a17ae | 2119 | bgp_unlock(bgp); |
0de4848d DS |
2120 | } |
2121 | ||
3f9c7369 DS |
2122 | /* |
2123 | * peer_af_announce_route | |
2124 | * | |
2125 | * Refreshes routes out to a peer_af immediately. | |
2126 | * | |
2951a7a4 | 2127 | * If the combine parameter is true, then this function will try to |
3f9c7369 DS |
2128 | * gather other peers in the subgroup for which a route announcement |
2129 | * is pending and efficently announce routes to all of them. | |
2130 | * | |
2131 | * For now, the 'combine' option has an effect only if all peers in | |
2132 | * the subgroup have a route announcement pending. | |
2133 | */ | |
d62a17ae | 2134 | void peer_af_announce_route(struct peer_af *paf, int combine) |
3f9c7369 | 2135 | { |
d62a17ae | 2136 | struct update_subgroup *subgrp; |
2137 | struct peer_af *cur_paf; | |
2138 | int all_pending; | |
2139 | ||
2140 | subgrp = paf->subgroup; | |
2141 | all_pending = 0; | |
2142 | ||
2143 | if (combine) { | |
2144 | /* | |
2145 | * If there are other peers in the old subgroup that also need | |
2146 | * routes to be announced, pull them into the peer's new | |
2147 | * subgroup. | |
2148 | * Combine route announcement with other peers if possible. | |
2149 | * | |
2150 | * For now, we combine only if all peers in the subgroup have an | |
2151 | * announcement pending. | |
2152 | */ | |
2153 | all_pending = 1; | |
2154 | ||
a2addae8 | 2155 | SUBGRP_FOREACH_PEER (subgrp, cur_paf) { |
d62a17ae | 2156 | if (cur_paf == paf) |
2157 | continue; | |
2158 | ||
2159 | if (cur_paf->t_announce_route) | |
2160 | continue; | |
2161 | ||
2162 | all_pending = 0; | |
2163 | break; | |
2164 | } | |
2165 | } | |
2166 | /* | |
2167 | * Announce to the peer alone if we were not asked to combine peers, | |
2168 | * or if some peers don't have a route annoucement pending. | |
2169 | */ | |
2170 | if (!combine || !all_pending) { | |
2171 | update_subgroup_split_peer(paf, NULL); | |
7bfdba54 | 2172 | subgrp = paf->subgroup; |
d62a17ae | 2173 | |
7bfdba54 | 2174 | assert(subgrp && subgrp->update_group); |
d62a17ae | 2175 | if (bgp_debug_update(paf->peer, NULL, subgrp->update_group, 0)) |
6cde4b45 | 2176 | zlog_debug("u%" PRIu64 ":s%" PRIu64" %s announcing routes", |
d62a17ae | 2177 | subgrp->update_group->id, subgrp->id, |
2178 | paf->peer->host); | |
2179 | ||
2180 | subgroup_announce_route(paf->subgroup); | |
2181 | return; | |
3f9c7369 | 2182 | } |
3f9c7369 | 2183 | |
d62a17ae | 2184 | /* |
2185 | * We will announce routes the entire subgroup. | |
2186 | * | |
2187 | * First stop refresh timers on all the other peers. | |
2188 | */ | |
a2addae8 | 2189 | SUBGRP_FOREACH_PEER (subgrp, cur_paf) { |
d62a17ae | 2190 | if (cur_paf == paf) |
2191 | continue; | |
3f9c7369 | 2192 | |
d62a17ae | 2193 | bgp_stop_announce_route_timer(cur_paf); |
2194 | } | |
3f9c7369 | 2195 | |
d62a17ae | 2196 | if (bgp_debug_update(paf->peer, NULL, subgrp->update_group, 0)) |
6cde4b45 | 2197 | zlog_debug("u%" PRIu64 ":s%" PRIu64" announcing routes to %s, combined into %d peers", |
d62a17ae | 2198 | subgrp->update_group->id, subgrp->id, |
2199 | paf->peer->host, subgrp->peer_count); | |
3f9c7369 | 2200 | |
d62a17ae | 2201 | subgroup_announce_route(subgrp); |
3f9c7369 | 2202 | |
d62a17ae | 2203 | SUBGRP_INCR_STAT_BY(subgrp, peer_refreshes_combined, |
2204 | subgrp->peer_count - 1); | |
3f9c7369 DS |
2205 | } |
2206 | ||
2fc102e1 QY |
2207 | void subgroup_trigger_write(struct update_subgroup *subgrp) |
2208 | { | |
2209 | struct peer_af *paf; | |
2210 | ||
becedef6 QY |
2211 | /* |
2212 | * For each peer in the subgroup, schedule a job to pull packets from | |
2213 | * the subgroup output queue into their own output queue. This action | |
2214 | * will trigger a write job on the I/O thread. | |
2215 | */ | |
996c9314 | 2216 | SUBGRP_FOREACH_PEER (subgrp, paf) |
feb17238 | 2217 | if (peer_established(paf->peer)) |
907a2395 | 2218 | event_add_timer_msec( |
996c9314 LB |
2219 | bm->master, bgp_generate_updgrp_packets, |
2220 | paf->peer, 0, | |
2221 | &paf->peer->t_generate_updgrp_packets); | |
2fc102e1 QY |
2222 | } |
2223 | ||
d62a17ae | 2224 | int update_group_clear_update_dbg(struct update_group *updgrp, void *arg) |
3f9c7369 | 2225 | { |
d62a17ae | 2226 | UPDGRP_PEER_DBG_OFF(updgrp); |
2227 | return UPDWALK_CONTINUE; | |
3f9c7369 | 2228 | } |
adbac85e | 2229 | |
06370dac | 2230 | /* Return true if we should addpath encode NLRI to this peer */ |
be92fc9f | 2231 | bool bgp_addpath_encode_tx(struct peer *peer, afi_t afi, safi_t safi) |
adbac85e | 2232 | { |
d62a17ae | 2233 | return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_TX_ADV) |
2234 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
2235 | PEER_CAP_ADDPATH_AF_RX_RCV)); | |
adbac85e | 2236 | } |
b1dd7180 | 2237 | |
8ccee4b8 DA |
2238 | bool bgp_addpath_capable(struct bgp_path_info *bpi, struct peer *peer, |
2239 | afi_t afi, safi_t safi) | |
2240 | { | |
2241 | return (bgp_addpath_tx_path(peer->addpath_type[afi][safi], bpi) || | |
2242 | (safi == SAFI_LABELED_UNICAST && | |
2243 | bgp_addpath_tx_path(peer->addpath_type[afi][SAFI_UNICAST], | |
2244 | bpi))); | |
2245 | } | |
2246 | ||
b1dd7180 DA |
2247 | bool bgp_check_selected(struct bgp_path_info *bpi, struct peer *peer, |
2248 | bool addpath_capable, afi_t afi, safi_t safi) | |
2249 | { | |
2250 | return (CHECK_FLAG(bpi->flags, BGP_PATH_SELECTED) || | |
8ccee4b8 | 2251 | (addpath_capable && bgp_addpath_capable(bpi, peer, afi, safi))); |
b1dd7180 | 2252 | } |