2 * bgp_updgrp.c: BGP update group structures
4 * @copyright Copyright (C) 2014 Cumulus Networks, Inc.
6 * @author Avneesh Sachdev <avneesh@sproute.net>
7 * @author Rajesh Varadarajan <rajesh@sproute.net>
8 * @author Pradosh Mohapatra <pradosh@sproute.net>
10 * This file is part of GNU Zebra.
12 * GNU Zebra is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2, or (at your option) any
17 * GNU Zebra is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * You should have received a copy of the GNU General Public License along
23 * with this program; see the file COPYING; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
34 #include "sockunion.h"
42 #include "workqueue.h"
47 #include "bgpd/bgpd.h"
48 #include "bgpd/bgp_table.h"
49 #include "bgpd/bgp_debug.h"
50 #include "bgpd/bgp_errors.h"
51 #include "bgpd/bgp_fsm.h"
52 #include "bgpd/bgp_addpath.h"
53 #include "bgpd/bgp_advertise.h"
54 #include "bgpd/bgp_packet.h"
55 #include "bgpd/bgp_updgrp.h"
56 #include "bgpd/bgp_route.h"
57 #include "bgpd/bgp_filter.h"
58 #include "bgpd/bgp_io.h"
65 * assign a unique ID to update group and subgroup. Mostly for display/
66 * debugging purposes. It's a 64-bit space - used leisurely without a
67 * worry about its wrapping and about filling gaps. While at it, timestamp
70 static void update_group_checkin(struct update_group
*updgrp
)
72 updgrp
->id
= ++bm
->updgrp_idspace
;
73 updgrp
->uptime
= monotime(NULL
);
76 static void update_subgroup_checkin(struct update_subgroup
*subgrp
,
77 struct update_group
*updgrp
)
79 subgrp
->id
= ++bm
->subgrp_idspace
;
80 subgrp
->uptime
= monotime(NULL
);
83 static void sync_init(struct update_subgroup
*subgrp
,
84 struct update_group
*updgrp
)
86 struct peer
*peer
= UPDGRP_PEER(updgrp
);
89 XCALLOC(MTYPE_BGP_SYNCHRONISE
, sizeof(struct bgp_synchronize
));
90 bgp_adv_fifo_init(&subgrp
->sync
->update
);
91 bgp_adv_fifo_init(&subgrp
->sync
->withdraw
);
92 bgp_adv_fifo_init(&subgrp
->sync
->withdraw_low
);
94 hash_create(bgp_advertise_attr_hash_key
,
95 bgp_advertise_attr_hash_cmp
, "BGP SubGroup Hash");
97 /* We use a larger buffer for subgrp->work in the event that:
98 * - We RX a BGP_UPDATE where the attributes alone are just
99 * under 4096 or 65535 (if Extended Message capability negotiated).
100 * - The user configures an outbound route-map that does many as-path
101 * prepends or adds many communities. At most they can have
103 * args in a route-map so there is a finite limit on how large they
105 * make the attributes.
107 * Having a buffer with BGP_MAX_PACKET_SIZE_OVERFLOW allows us to avoid
109 * checking for every single attribute as we construct an UPDATE.
111 subgrp
->work
= stream_new(peer
->max_packet_size
112 + BGP_MAX_PACKET_SIZE_OVERFLOW
);
113 subgrp
->scratch
= stream_new(peer
->max_packet_size
);
116 static void sync_delete(struct update_subgroup
*subgrp
)
118 XFREE(MTYPE_BGP_SYNCHRONISE
, subgrp
->sync
);
120 hash_clean(subgrp
->hash
,
121 (void (*)(void *))bgp_advertise_attr_free
);
122 hash_free(subgrp
->hash
);
126 stream_free(subgrp
->work
);
129 stream_free(subgrp
->scratch
);
130 subgrp
->scratch
= NULL
;
136 * copy only those fields that are relevant to update group match
138 static void conf_copy(struct peer
*dst
, struct peer
*src
, afi_t afi
,
141 struct bgp_filter
*srcfilter
;
142 struct bgp_filter
*dstfilter
;
144 srcfilter
= &src
->filter
[afi
][safi
];
145 dstfilter
= &dst
->filter
[afi
][safi
];
148 dst
->sort
= src
->sort
;
150 dst
->v_routeadv
= src
->v_routeadv
;
151 dst
->flags
= src
->flags
;
152 dst
->af_flags
[afi
][safi
] = src
->af_flags
[afi
][safi
];
153 dst
->pmax_out
[afi
][safi
] = src
->pmax_out
[afi
][safi
];
154 dst
->max_packet_size
= src
->max_packet_size
;
155 XFREE(MTYPE_BGP_PEER_HOST
, dst
->host
);
157 dst
->host
= XSTRDUP(MTYPE_BGP_PEER_HOST
, src
->host
);
159 dst
->af_cap
[afi
][safi
] = src
->af_cap
[afi
][safi
];
160 dst
->afc_nego
[afi
][safi
] = src
->afc_nego
[afi
][safi
];
161 dst
->orf_plist
[afi
][safi
] = src
->orf_plist
[afi
][safi
];
162 dst
->addpath_type
[afi
][safi
] = src
->addpath_type
[afi
][safi
];
163 dst
->local_as
= src
->local_as
;
164 dst
->change_local_as
= src
->change_local_as
;
165 dst
->shared_network
= src
->shared_network
;
166 dst
->local_role
= src
->local_role
;
167 dst
->as_path_loop_detection
= src
->as_path_loop_detection
;
169 if (src
->soo
[afi
][safi
]) {
170 ecommunity_free(&dst
->soo
[afi
][safi
]);
171 dst
->soo
[afi
][safi
] = ecommunity_dup(src
->soo
[afi
][safi
]);
174 memcpy(&(dst
->nexthop
), &(src
->nexthop
), sizeof(struct bgp_nexthop
));
176 dst
->group
= src
->group
;
178 if (src
->default_rmap
[afi
][safi
].name
) {
179 dst
->default_rmap
[afi
][safi
].name
=
180 XSTRDUP(MTYPE_ROUTE_MAP_NAME
,
181 src
->default_rmap
[afi
][safi
].name
);
182 dst
->default_rmap
[afi
][safi
].map
=
183 src
->default_rmap
[afi
][safi
].map
;
186 if (DISTRIBUTE_OUT_NAME(srcfilter
)) {
187 DISTRIBUTE_OUT_NAME(dstfilter
) = XSTRDUP(
188 MTYPE_BGP_FILTER_NAME
, DISTRIBUTE_OUT_NAME(srcfilter
));
189 DISTRIBUTE_OUT(dstfilter
) = DISTRIBUTE_OUT(srcfilter
);
192 if (PREFIX_LIST_OUT_NAME(srcfilter
)) {
193 PREFIX_LIST_OUT_NAME(dstfilter
) = XSTRDUP(
194 MTYPE_BGP_FILTER_NAME
, PREFIX_LIST_OUT_NAME(srcfilter
));
195 PREFIX_LIST_OUT(dstfilter
) = PREFIX_LIST_OUT(srcfilter
);
198 if (FILTER_LIST_OUT_NAME(srcfilter
)) {
199 FILTER_LIST_OUT_NAME(dstfilter
) = XSTRDUP(
200 MTYPE_BGP_FILTER_NAME
, FILTER_LIST_OUT_NAME(srcfilter
));
201 FILTER_LIST_OUT(dstfilter
) = FILTER_LIST_OUT(srcfilter
);
204 if (ROUTE_MAP_OUT_NAME(srcfilter
)) {
205 ROUTE_MAP_OUT_NAME(dstfilter
) = XSTRDUP(
206 MTYPE_BGP_FILTER_NAME
, ROUTE_MAP_OUT_NAME(srcfilter
));
207 ROUTE_MAP_OUT(dstfilter
) = ROUTE_MAP_OUT(srcfilter
);
210 if (UNSUPPRESS_MAP_NAME(srcfilter
)) {
211 UNSUPPRESS_MAP_NAME(dstfilter
) = XSTRDUP(
212 MTYPE_BGP_FILTER_NAME
, UNSUPPRESS_MAP_NAME(srcfilter
));
213 UNSUPPRESS_MAP(dstfilter
) = UNSUPPRESS_MAP(srcfilter
);
216 if (ADVERTISE_MAP_NAME(srcfilter
)) {
217 ADVERTISE_MAP_NAME(dstfilter
) = XSTRDUP(
218 MTYPE_BGP_FILTER_NAME
, ADVERTISE_MAP_NAME(srcfilter
));
219 ADVERTISE_MAP(dstfilter
) = ADVERTISE_MAP(srcfilter
);
220 ADVERTISE_CONDITION(dstfilter
) = ADVERTISE_CONDITION(srcfilter
);
223 if (CONDITION_MAP_NAME(srcfilter
)) {
224 CONDITION_MAP_NAME(dstfilter
) = XSTRDUP(
225 MTYPE_BGP_FILTER_NAME
, CONDITION_MAP_NAME(srcfilter
));
226 CONDITION_MAP(dstfilter
) = CONDITION_MAP(srcfilter
);
229 dstfilter
->advmap
.update_type
= srcfilter
->advmap
.update_type
;
233 * since we did a bunch of XSTRDUP's in conf_copy, time to free them up
235 static void conf_release(struct peer
*src
, afi_t afi
, safi_t safi
)
237 struct bgp_filter
*srcfilter
;
239 srcfilter
= &src
->filter
[afi
][safi
];
241 XFREE(MTYPE_ROUTE_MAP_NAME
, src
->default_rmap
[afi
][safi
].name
);
243 XFREE(MTYPE_BGP_FILTER_NAME
, srcfilter
->dlist
[FILTER_OUT
].name
);
245 XFREE(MTYPE_BGP_FILTER_NAME
, srcfilter
->plist
[FILTER_OUT
].name
);
247 XFREE(MTYPE_BGP_FILTER_NAME
, srcfilter
->aslist
[FILTER_OUT
].name
);
249 XFREE(MTYPE_BGP_FILTER_NAME
, srcfilter
->map
[RMAP_OUT
].name
);
251 XFREE(MTYPE_BGP_FILTER_NAME
, srcfilter
->usmap
.name
);
253 XFREE(MTYPE_BGP_FILTER_NAME
, srcfilter
->advmap
.aname
);
255 XFREE(MTYPE_BGP_FILTER_NAME
, srcfilter
->advmap
.cname
);
257 XFREE(MTYPE_BGP_PEER_HOST
, src
->host
);
259 ecommunity_free(&src
->soo
[afi
][safi
]);
262 static void peer2_updgrp_copy(struct update_group
*updgrp
, struct peer_af
*paf
)
275 updgrp
->afi
= paf
->afi
;
276 updgrp
->safi
= paf
->safi
;
277 updgrp
->afid
= paf
->afid
;
278 updgrp
->bgp
= src
->bgp
;
280 conf_copy(dst
, src
, paf
->afi
, paf
->safi
);
284 * auxiliary functions to maintain the hash table.
285 * - updgrp_hash_alloc - to create a new entry, passed to hash_get
286 * - updgrp_hash_key_make - makes the key for update group search
287 * - updgrp_hash_cmp - compare two update groups.
289 static void *updgrp_hash_alloc(void *p
)
291 struct update_group
*updgrp
;
292 const struct update_group
*in
;
294 in
= (const struct update_group
*)p
;
295 updgrp
= XCALLOC(MTYPE_BGP_UPDGRP
, sizeof(struct update_group
));
296 memcpy(updgrp
, in
, sizeof(struct update_group
));
297 updgrp
->conf
= XCALLOC(MTYPE_BGP_PEER
, sizeof(struct peer
));
298 conf_copy(updgrp
->conf
, in
->conf
, in
->afi
, in
->safi
);
303 * The hash value for a peer is computed from the following variables:
305 * 1. IBGP (1) or EBGP (2)
306 * 2. FLAGS based on configuration:
307 * LOCAL_AS_NO_PREPEND
308 * LOCAL_AS_REPLACE_AS
309 * 3. AF_FLAGS based on configuration:
310 * Refer to definition in bgp_updgrp.h
311 * 4. (AF-independent) Capability flags:
313 * 5. (AF-dependent) Capability flags:
314 * ORF_PREFIX_SM_RCV (peer can send prefix ORF)
317 * 8. Outbound route-map name (neighbor route-map <> out)
318 * 9. Outbound distribute-list name (neighbor distribute-list <> out)
319 * 10. Outbound prefix-list name (neighbor prefix-list <> out)
320 * 11. Outbound as-list name (neighbor filter-list <> out)
321 * 12. Unsuppress map name (neighbor unsuppress-map <>)
322 * 13. default rmap name (neighbor default-originate route-map <>)
323 * 14. encoding both global and link-local nexthop?
324 * 15. If peer is configured to be a lonesoul, peer ip address
325 * 16. Local-as should match, if configured.
326 * 17. maximum-prefix-out
327 * 18. Local-role should also match, if configured.
330 static unsigned int updgrp_hash_key_make(const void *p
)
332 const struct update_group
*updgrp
;
333 const struct peer
*peer
;
334 const struct bgp_filter
*filter
;
341 #define SEED2 2147483647
347 flags
= peer
->af_flags
[afi
][safi
];
348 filter
= &peer
->filter
[afi
][safi
];
352 key
= jhash_1word(peer
->sort
, key
); /* EBGP or IBGP */
353 key
= jhash_1word((peer
->flags
& PEER_UPDGRP_FLAGS
), key
);
354 key
= jhash_1word((flags
& PEER_UPDGRP_AF_FLAGS
), key
);
355 key
= jhash_1word((uint32_t)peer
->addpath_type
[afi
][safi
], key
);
356 key
= jhash_1word((peer
->cap
& PEER_UPDGRP_CAP_FLAGS
), key
);
357 key
= jhash_1word((peer
->af_cap
[afi
][safi
] & PEER_UPDGRP_AF_CAP_FLAGS
),
359 key
= jhash_1word(peer
->v_routeadv
, key
);
360 key
= jhash_1word(peer
->change_local_as
, key
);
361 key
= jhash_1word(peer
->max_packet_size
, key
);
362 key
= jhash_1word(peer
->pmax_out
[afi
][safi
], key
);
364 if (peer
->as_path_loop_detection
)
365 key
= jhash_2words(peer
->as
, peer
->as_path_loop_detection
, key
);
368 key
= jhash_1word(jhash(peer
->group
->name
,
369 strlen(peer
->group
->name
), SEED1
),
372 if (filter
->map
[RMAP_OUT
].name
)
373 key
= jhash_1word(jhash(filter
->map
[RMAP_OUT
].name
,
374 strlen(filter
->map
[RMAP_OUT
].name
),
378 if (filter
->dlist
[FILTER_OUT
].name
)
379 key
= jhash_1word(jhash(filter
->dlist
[FILTER_OUT
].name
,
380 strlen(filter
->dlist
[FILTER_OUT
].name
),
384 if (filter
->plist
[FILTER_OUT
].name
)
385 key
= jhash_1word(jhash(filter
->plist
[FILTER_OUT
].name
,
386 strlen(filter
->plist
[FILTER_OUT
].name
),
390 if (filter
->aslist
[FILTER_OUT
].name
)
391 key
= jhash_1word(jhash(filter
->aslist
[FILTER_OUT
].name
,
392 strlen(filter
->aslist
[FILTER_OUT
].name
),
396 if (filter
->usmap
.name
)
397 key
= jhash_1word(jhash(filter
->usmap
.name
,
398 strlen(filter
->usmap
.name
), SEED1
),
401 if (filter
->advmap
.aname
)
402 key
= jhash_1word(jhash(filter
->advmap
.aname
,
403 strlen(filter
->advmap
.aname
), SEED1
),
406 if (filter
->advmap
.update_type
)
407 key
= jhash_1word(filter
->advmap
.update_type
, key
);
409 if (peer
->default_rmap
[afi
][safi
].name
)
411 jhash(peer
->default_rmap
[afi
][safi
].name
,
412 strlen(peer
->default_rmap
[afi
][safi
].name
),
416 /* If peer is on a shared network and is exchanging IPv6 prefixes,
417 * it needs to include link-local address. That's different from
418 * non-shared-network peers (nexthop encoded with 32 bytes vs 16
419 * bytes). We create different update groups to take care of that.
422 (peer
->shared_network
&& peer_afi_active_nego(peer
, AFI_IP6
)),
425 * There are certain peers that must get their own update-group:
427 * - peers that negotiated ORF
428 * - maximum-prefix-out is set
430 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_LONESOUL
)
431 || CHECK_FLAG(peer
->af_cap
[afi
][safi
], PEER_CAP_ORF_PREFIX_SM_RCV
)
432 || CHECK_FLAG(peer
->af_cap
[afi
][safi
],
433 PEER_CAP_ORF_PREFIX_SM_OLD_RCV
)
434 || CHECK_FLAG(peer
->af_flags
[afi
][safi
], PEER_FLAG_MAX_PREFIX_OUT
))
435 key
= jhash_1word(jhash(peer
->host
, strlen(peer
->host
), SEED2
),
438 * Multiple sessions with the same neighbor should get their own
439 * update-group if they have different roles.
441 key
= jhash_1word(peer
->local_role
, key
);
443 /* Neighbors configured with the AIGP attribute are put in a separate
444 * update group from other neighbors.
446 key
= jhash_1word((peer
->flags
& PEER_FLAG_AIGP
), key
);
448 if (peer
->soo
[afi
][safi
]) {
449 char *soo_str
= ecommunity_str(peer
->soo
[afi
][safi
]);
451 key
= jhash_1word(jhash(soo_str
, strlen(soo_str
), SEED1
), key
);
454 if (bgp_debug_neighbor_events(peer
)) {
456 "%pBP Update Group Hash: sort: %d UpdGrpFlags: %ju UpdGrpAFFlags: %ju",
458 (intmax_t)CHECK_FLAG(peer
->flags
, PEER_UPDGRP_FLAGS
),
459 (intmax_t)CHECK_FLAG(flags
, PEER_UPDGRP_AF_FLAGS
));
461 "%pBP Update Group Hash: addpath: %u UpdGrpCapFlag: %u UpdGrpCapAFFlag: %u route_adv: %u change local as: %u, as_path_loop_detection: %d",
462 peer
, (uint32_t)peer
->addpath_type
[afi
][safi
],
463 CHECK_FLAG(peer
->cap
, PEER_UPDGRP_CAP_FLAGS
),
464 CHECK_FLAG(peer
->af_cap
[afi
][safi
],
465 PEER_UPDGRP_AF_CAP_FLAGS
),
466 peer
->v_routeadv
, peer
->change_local_as
,
467 peer
->as_path_loop_detection
);
469 "%pBP Update Group Hash: max packet size: %u pmax_out: %u Peer Group: %s rmap out: %s",
470 peer
, peer
->max_packet_size
, peer
->pmax_out
[afi
][safi
],
471 peer
->group
? peer
->group
->name
: "(NONE)",
472 ROUTE_MAP_OUT_NAME(filter
) ? ROUTE_MAP_OUT_NAME(filter
)
475 "%pBP Update Group Hash: dlist out: %s plist out: %s aslist out: %s usmap out: %s advmap: %s",
477 DISTRIBUTE_OUT_NAME(filter
)
478 ? DISTRIBUTE_OUT_NAME(filter
)
480 PREFIX_LIST_OUT_NAME(filter
)
481 ? PREFIX_LIST_OUT_NAME(filter
)
483 FILTER_LIST_OUT_NAME(filter
)
484 ? FILTER_LIST_OUT_NAME(filter
)
486 UNSUPPRESS_MAP_NAME(filter
)
487 ? UNSUPPRESS_MAP_NAME(filter
)
489 ADVERTISE_MAP_NAME(filter
) ? ADVERTISE_MAP_NAME(filter
)
492 "%pBP Update Group Hash: default rmap: %s shared network and afi active network: %d",
494 peer
->default_rmap
[afi
][safi
].name
495 ? peer
->default_rmap
[afi
][safi
].name
497 peer
->shared_network
&&
498 peer_afi_active_nego(peer
, AFI_IP6
));
500 "%pBP Update Group Hash: Lonesoul: %d ORF prefix: %u ORF old: %u max prefix out: %ju",
501 peer
, !!CHECK_FLAG(peer
->flags
, PEER_FLAG_LONESOUL
),
502 CHECK_FLAG(peer
->af_cap
[afi
][safi
],
503 PEER_CAP_ORF_PREFIX_SM_RCV
),
504 CHECK_FLAG(peer
->af_cap
[afi
][safi
],
505 PEER_CAP_ORF_PREFIX_SM_OLD_RCV
),
506 (intmax_t)CHECK_FLAG(peer
->af_flags
[afi
][safi
],
507 PEER_FLAG_MAX_PREFIX_OUT
));
508 zlog_debug("%pBP Update Group Hash key: %u", peer
, key
);
513 static bool updgrp_hash_cmp(const void *p1
, const void *p2
)
515 const struct update_group
*grp1
;
516 const struct update_group
*grp2
;
517 const struct peer
*pe1
;
518 const struct peer
*pe2
;
521 const struct bgp_filter
*fl1
;
522 const struct bgp_filter
*fl2
;
535 flags1
= pe1
->af_flags
[afi
][safi
];
536 flags2
= pe2
->af_flags
[afi
][safi
];
537 fl1
= &pe1
->filter
[afi
][safi
];
538 fl2
= &pe2
->filter
[afi
][safi
];
540 /* put EBGP and IBGP peers in different update groups */
541 if (pe1
->sort
!= pe2
->sort
)
544 /* check peer flags */
545 if ((pe1
->flags
& PEER_UPDGRP_FLAGS
)
546 != (pe2
->flags
& PEER_UPDGRP_FLAGS
))
549 /* If there is 'local-as' configured, it should match. */
550 if (pe1
->change_local_as
!= pe2
->change_local_as
)
553 if (pe1
->pmax_out
[afi
][safi
] != pe2
->pmax_out
[afi
][safi
])
556 /* flags like route reflector client */
557 if ((flags1
& PEER_UPDGRP_AF_FLAGS
) != (flags2
& PEER_UPDGRP_AF_FLAGS
))
560 if (pe1
->addpath_type
[afi
][safi
] != pe2
->addpath_type
[afi
][safi
])
563 if ((pe1
->cap
& PEER_UPDGRP_CAP_FLAGS
)
564 != (pe2
->cap
& PEER_UPDGRP_CAP_FLAGS
))
567 if ((pe1
->af_cap
[afi
][safi
] & PEER_UPDGRP_AF_CAP_FLAGS
)
568 != (pe2
->af_cap
[afi
][safi
] & PEER_UPDGRP_AF_CAP_FLAGS
))
571 if (pe1
->v_routeadv
!= pe2
->v_routeadv
)
574 if (pe1
->group
!= pe2
->group
)
577 /* Roles can affect filtering */
578 if (pe1
->local_role
!= pe2
->local_role
)
581 /* route-map names should be the same */
582 if ((fl1
->map
[RMAP_OUT
].name
&& !fl2
->map
[RMAP_OUT
].name
)
583 || (!fl1
->map
[RMAP_OUT
].name
&& fl2
->map
[RMAP_OUT
].name
)
584 || (fl1
->map
[RMAP_OUT
].name
&& fl2
->map
[RMAP_OUT
].name
585 && strcmp(fl1
->map
[RMAP_OUT
].name
, fl2
->map
[RMAP_OUT
].name
)))
588 if ((fl1
->dlist
[FILTER_OUT
].name
&& !fl2
->dlist
[FILTER_OUT
].name
)
589 || (!fl1
->dlist
[FILTER_OUT
].name
&& fl2
->dlist
[FILTER_OUT
].name
)
590 || (fl1
->dlist
[FILTER_OUT
].name
&& fl2
->dlist
[FILTER_OUT
].name
591 && strcmp(fl1
->dlist
[FILTER_OUT
].name
,
592 fl2
->dlist
[FILTER_OUT
].name
)))
595 if ((fl1
->plist
[FILTER_OUT
].name
&& !fl2
->plist
[FILTER_OUT
].name
)
596 || (!fl1
->plist
[FILTER_OUT
].name
&& fl2
->plist
[FILTER_OUT
].name
)
597 || (fl1
->plist
[FILTER_OUT
].name
&& fl2
->plist
[FILTER_OUT
].name
598 && strcmp(fl1
->plist
[FILTER_OUT
].name
,
599 fl2
->plist
[FILTER_OUT
].name
)))
602 if ((fl1
->aslist
[FILTER_OUT
].name
&& !fl2
->aslist
[FILTER_OUT
].name
)
603 || (!fl1
->aslist
[FILTER_OUT
].name
&& fl2
->aslist
[FILTER_OUT
].name
)
604 || (fl1
->aslist
[FILTER_OUT
].name
&& fl2
->aslist
[FILTER_OUT
].name
605 && strcmp(fl1
->aslist
[FILTER_OUT
].name
,
606 fl2
->aslist
[FILTER_OUT
].name
)))
609 if ((fl1
->usmap
.name
&& !fl2
->usmap
.name
)
610 || (!fl1
->usmap
.name
&& fl2
->usmap
.name
)
611 || (fl1
->usmap
.name
&& fl2
->usmap
.name
612 && strcmp(fl1
->usmap
.name
, fl2
->usmap
.name
)))
615 if ((fl1
->advmap
.aname
&& !fl2
->advmap
.aname
)
616 || (!fl1
->advmap
.aname
&& fl2
->advmap
.aname
)
617 || (fl1
->advmap
.aname
&& fl2
->advmap
.aname
618 && strcmp(fl1
->advmap
.aname
, fl2
->advmap
.aname
)))
621 if (fl1
->advmap
.update_type
!= fl2
->advmap
.update_type
)
624 if ((pe1
->default_rmap
[afi
][safi
].name
625 && !pe2
->default_rmap
[afi
][safi
].name
)
626 || (!pe1
->default_rmap
[afi
][safi
].name
627 && pe2
->default_rmap
[afi
][safi
].name
)
628 || (pe1
->default_rmap
[afi
][safi
].name
629 && pe2
->default_rmap
[afi
][safi
].name
630 && strcmp(pe1
->default_rmap
[afi
][safi
].name
,
631 pe2
->default_rmap
[afi
][safi
].name
)))
634 if ((afi
== AFI_IP6
) && (pe1
->shared_network
!= pe2
->shared_network
))
637 if ((CHECK_FLAG(pe1
->flags
, PEER_FLAG_LONESOUL
)
638 || CHECK_FLAG(pe1
->af_cap
[afi
][safi
], PEER_CAP_ORF_PREFIX_SM_RCV
)
639 || CHECK_FLAG(pe1
->af_cap
[afi
][safi
],
640 PEER_CAP_ORF_PREFIX_SM_OLD_RCV
))
641 && !sockunion_same(&pe1
->su
, &pe2
->su
))
647 static void peer_lonesoul_or_not(struct peer
*peer
, int set
)
649 /* no change in status? */
650 if (set
== (CHECK_FLAG(peer
->flags
, PEER_FLAG_LONESOUL
) > 0))
654 SET_FLAG(peer
->flags
, PEER_FLAG_LONESOUL
);
656 UNSET_FLAG(peer
->flags
, PEER_FLAG_LONESOUL
);
658 update_group_adjust_peer_afs(peer
);
662 * subgroup_total_packets_enqueued
664 * Returns the total number of packets enqueued to a subgroup.
667 subgroup_total_packets_enqueued(struct update_subgroup
*subgrp
)
671 pkt
= bpacket_queue_last(SUBGRP_PKTQ(subgrp
));
676 static int update_group_show_walkcb(struct update_group
*updgrp
, void *arg
)
678 struct updwalk_context
*ctx
= arg
;
680 struct update_subgroup
*subgrp
;
682 struct bgp_filter
*filter
;
683 struct peer
*peer
= UPDGRP_PEER(updgrp
);
685 json_object
*json_updgrp
= NULL
;
686 json_object
*json_subgrps
= NULL
;
687 json_object
*json_subgrp
= NULL
;
688 json_object
*json_time
= NULL
;
689 json_object
*json_subgrp_time
= NULL
;
690 json_object
*json_subgrp_event
= NULL
;
691 json_object
*json_peers
= NULL
;
692 json_object
*json_pkt_info
= NULL
;
693 time_t epoch_tbuf
, tbuf
;
698 if (ctx
->subgrp_id
) {
699 UPDGRP_FOREACH_SUBGRP (updgrp
, subgrp
) {
700 if (ctx
->subgrp_id
&& (ctx
->subgrp_id
!= subgrp
->id
))
712 /* Since this routine is invoked from a walk, we cannot signal
714 /* error here, can only return. */
721 json_updgrp
= json_object_new_object();
722 /* Display json o/p */
723 tbuf
= monotime(NULL
);
724 tbuf
-= updgrp
->uptime
;
725 epoch_tbuf
= time(NULL
) - tbuf
;
726 json_time
= json_object_new_object();
727 json_object_int_add(json_time
, "epoch", epoch_tbuf
);
728 json_object_string_add(json_time
, "epochString",
730 json_object_object_add(json_updgrp
, "groupCreateTime",
732 json_object_string_add(json_updgrp
, "afi",
733 afi2str(updgrp
->afi
));
734 json_object_string_add(json_updgrp
, "safi",
735 safi2str(updgrp
->safi
));
737 vty_out(vty
, "Update-group %" PRIu64
":\n", updgrp
->id
);
738 vty_out(vty
, " Created: %s", timestamp_string(updgrp
->uptime
));
741 filter
= &updgrp
->conf
->filter
[updgrp
->afi
][updgrp
->safi
];
742 if (filter
->map
[RMAP_OUT
].name
) {
744 json_object_string_add(json_updgrp
, "outRouteMap",
745 filter
->map
[RMAP_OUT
].name
);
747 vty_out(vty
, " Outgoing route map: %s\n",
748 filter
->map
[RMAP_OUT
].name
);
752 json_object_int_add(json_updgrp
, "minRouteAdvInt",
753 updgrp
->conf
->v_routeadv
);
755 vty_out(vty
, " MRAI value (seconds): %d\n",
756 updgrp
->conf
->v_routeadv
);
758 if (updgrp
->conf
->change_local_as
) {
760 json_object_int_add(json_updgrp
, "localAs",
761 updgrp
->conf
->change_local_as
);
762 json_object_boolean_add(
763 json_updgrp
, "noPrepend",
764 CHECK_FLAG(updgrp
->conf
->flags
,
765 PEER_FLAG_LOCAL_AS_NO_PREPEND
));
766 json_object_boolean_add(
767 json_updgrp
, "replaceLocalAs",
768 CHECK_FLAG(updgrp
->conf
->flags
,
769 PEER_FLAG_LOCAL_AS_REPLACE_AS
));
771 vty_out(vty
, " Local AS %u%s%s\n",
772 updgrp
->conf
->change_local_as
,
773 CHECK_FLAG(updgrp
->conf
->flags
,
774 PEER_FLAG_LOCAL_AS_NO_PREPEND
)
777 CHECK_FLAG(updgrp
->conf
->flags
,
778 PEER_FLAG_LOCAL_AS_REPLACE_AS
)
784 json_subgrps
= json_object_new_array();
785 UPDGRP_FOREACH_SUBGRP (updgrp
, subgrp
) {
786 if (ctx
->subgrp_id
&& (ctx
->subgrp_id
!= subgrp
->id
))
789 json_subgrp
= json_object_new_object();
790 json_object_int_add(json_subgrp
, "subGroupId",
792 tbuf
= monotime(NULL
);
793 tbuf
-= subgrp
->uptime
;
794 epoch_tbuf
= time(NULL
) - tbuf
;
795 json_subgrp_time
= json_object_new_object();
796 json_object_int_add(json_subgrp_time
, "epoch",
798 json_object_string_add(json_subgrp_time
, "epochString",
800 json_object_object_add(json_subgrp
, "groupCreateTime",
804 vty_out(vty
, " Update-subgroup %" PRIu64
":\n",
806 vty_out(vty
, " Created: %s",
807 timestamp_string(subgrp
->uptime
));
810 if (subgrp
->split_from
.update_group_id
811 || subgrp
->split_from
.subgroup_id
) {
814 json_subgrp
, "splitGroupId",
815 subgrp
->split_from
.update_group_id
);
817 json_subgrp
, "splitSubGroupId",
818 subgrp
->split_from
.subgroup_id
);
821 " Split from group id: %" PRIu64
823 subgrp
->split_from
.update_group_id
);
825 " Split from subgroup id: %" PRIu64
827 subgrp
->split_from
.subgroup_id
);
832 json_subgrp_event
= json_object_new_object();
833 json_object_int_add(json_subgrp_event
, "joinEvents",
834 subgrp
->join_events
);
835 json_object_int_add(json_subgrp_event
, "pruneEvents",
836 subgrp
->prune_events
);
837 json_object_int_add(json_subgrp_event
, "mergeEvents",
838 subgrp
->merge_events
);
839 json_object_int_add(json_subgrp_event
, "splitEvents",
840 subgrp
->split_events
);
841 json_object_int_add(json_subgrp_event
, "switchEvents",
842 subgrp
->updgrp_switch_events
);
843 json_object_int_add(json_subgrp_event
,
845 subgrp
->peer_refreshes_combined
);
846 json_object_int_add(json_subgrp_event
,
848 subgrp
->merge_checks_triggered
);
849 json_object_object_add(json_subgrp
, "statistics",
851 json_object_int_add(json_subgrp
, "coalesceTime",
852 (UPDGRP_INST(subgrp
->update_group
))
854 json_object_int_add(json_subgrp
, "version",
856 json_pkt_info
= json_object_new_object();
858 json_pkt_info
, "qeueueLen",
859 bpacket_queue_length(SUBGRP_PKTQ(subgrp
)));
861 json_pkt_info
, "queuedTotal",
862 subgroup_total_packets_enqueued(subgrp
));
864 json_pkt_info
, "queueHwmLen",
865 bpacket_queue_hwm_length(SUBGRP_PKTQ(subgrp
)));
867 json_pkt_info
, "totalEnqueued",
868 subgroup_total_packets_enqueued(subgrp
));
869 json_object_object_add(json_subgrp
, "packetQueueInfo",
871 json_object_int_add(json_subgrp
, "adjListCount",
873 json_object_boolean_add(
874 json_subgrp
, "needsRefresh",
875 CHECK_FLAG(subgrp
->flags
,
876 SUBGRP_FLAG_NEEDS_REFRESH
));
878 vty_out(vty
, " Join events: %u\n",
879 subgrp
->join_events
);
880 vty_out(vty
, " Prune events: %u\n",
881 subgrp
->prune_events
);
882 vty_out(vty
, " Merge events: %u\n",
883 subgrp
->merge_events
);
884 vty_out(vty
, " Split events: %u\n",
885 subgrp
->split_events
);
886 vty_out(vty
, " Update group switch events: %u\n",
887 subgrp
->updgrp_switch_events
);
888 vty_out(vty
, " Peer refreshes combined: %u\n",
889 subgrp
->peer_refreshes_combined
);
890 vty_out(vty
, " Merge checks triggered: %u\n",
891 subgrp
->merge_checks_triggered
);
892 vty_out(vty
, " Coalesce Time: %u%s\n",
893 (UPDGRP_INST(subgrp
->update_group
))
895 subgrp
->t_coalesce
? "(Running)" : "");
896 vty_out(vty
, " Version: %" PRIu64
"\n",
898 vty_out(vty
, " Packet queue length: %d\n",
899 bpacket_queue_length(SUBGRP_PKTQ(subgrp
)));
900 vty_out(vty
, " Total packets enqueued: %u\n",
901 subgroup_total_packets_enqueued(subgrp
));
902 vty_out(vty
, " Packet queue high watermark: %d\n",
903 bpacket_queue_hwm_length(SUBGRP_PKTQ(subgrp
)));
904 vty_out(vty
, " Adj-out list count: %u\n",
906 vty_out(vty
, " Advertise list: %s\n",
907 advertise_list_is_empty(subgrp
) ? "empty"
909 vty_out(vty
, " Flags: %s\n",
910 CHECK_FLAG(subgrp
->flags
,
911 SUBGRP_FLAG_NEEDS_REFRESH
)
915 vty_out(vty
, " Max packet size: %d\n",
916 peer
->max_packet_size
);
918 if (subgrp
->peer_count
> 0) {
920 json_peers
= json_object_new_array();
921 SUBGRP_FOREACH_PEER (subgrp
, paf
) {
923 json_object_new_string(
925 json_object_array_add(json_peers
, peer
);
927 json_object_object_add(json_subgrp
, "peers",
930 vty_out(vty
, " Peers:\n");
931 SUBGRP_FOREACH_PEER (subgrp
, paf
)
932 vty_out(vty
, " - %s\n",
938 json_object_array_add(json_subgrps
, json_subgrp
);
942 json_object_object_add(json_updgrp
, "subGroup", json_subgrps
);
943 json_object_object_addf(ctx
->json_updategrps
, json_updgrp
,
944 "%" PRIu64
, updgrp
->id
);
947 return UPDWALK_CONTINUE
;
951 * Helper function to show the packet queue for each subgroup of update group.
952 * Will be constrained to a particular subgroup id if id !=0
954 static int updgrp_show_packet_queue_walkcb(struct update_group
*updgrp
,
957 struct updwalk_context
*ctx
= arg
;
958 struct update_subgroup
*subgrp
;
962 UPDGRP_FOREACH_SUBGRP (updgrp
, subgrp
) {
963 if (ctx
->subgrp_id
&& (ctx
->subgrp_id
!= subgrp
->id
))
965 vty_out(vty
, "update group %" PRIu64
", subgroup %" PRIu64
"\n",
966 updgrp
->id
, subgrp
->id
);
967 bpacket_queue_show_vty(SUBGRP_PKTQ(subgrp
), vty
);
969 return UPDWALK_CONTINUE
;
973 * Show the packet queue for each subgroup of update group. Will be
974 * constrained to a particular subgroup id if id !=0
976 void update_group_show_packet_queue(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
977 struct vty
*vty
, uint64_t id
)
979 struct updwalk_context ctx
;
981 memset(&ctx
, 0, sizeof(ctx
));
985 update_group_af_walk(bgp
, afi
, safi
, updgrp_show_packet_queue_walkcb
,
989 static struct update_group
*update_group_find(struct peer_af
*paf
)
991 struct update_group
*updgrp
;
992 struct update_group tmp
;
993 struct peer tmp_conf
;
995 if (!peer_established(PAF_PEER(paf
)))
998 memset(&tmp
, 0, sizeof(tmp
));
999 memset(&tmp_conf
, 0, sizeof(tmp_conf
));
1000 tmp
.conf
= &tmp_conf
;
1001 peer2_updgrp_copy(&tmp
, paf
);
1003 updgrp
= hash_lookup(paf
->peer
->bgp
->update_groups
[paf
->afid
], &tmp
);
1004 conf_release(&tmp_conf
, paf
->afi
, paf
->safi
);
1008 static struct update_group
*update_group_create(struct peer_af
*paf
)
1010 struct update_group
*updgrp
;
1011 struct update_group tmp
;
1012 struct peer tmp_conf
;
1014 memset(&tmp
, 0, sizeof(tmp
));
1015 memset(&tmp_conf
, 0, sizeof(tmp_conf
));
1016 tmp
.conf
= &tmp_conf
;
1017 peer2_updgrp_copy(&tmp
, paf
);
1019 updgrp
= hash_get(paf
->peer
->bgp
->update_groups
[paf
->afid
], &tmp
,
1021 update_group_checkin(updgrp
);
1023 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1024 zlog_debug("create update group %" PRIu64
, updgrp
->id
);
1026 UPDGRP_GLOBAL_STAT(updgrp
, updgrps_created
) += 1;
1028 conf_release(&tmp_conf
, paf
->afi
, paf
->safi
);
1032 static void update_group_delete(struct update_group
*updgrp
)
1034 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1035 zlog_debug("delete update group %" PRIu64
, updgrp
->id
);
1037 UPDGRP_GLOBAL_STAT(updgrp
, updgrps_deleted
) += 1;
1039 hash_release(updgrp
->bgp
->update_groups
[updgrp
->afid
], updgrp
);
1040 conf_release(updgrp
->conf
, updgrp
->afi
, updgrp
->safi
);
1042 XFREE(MTYPE_BGP_PEER_HOST
, updgrp
->conf
->host
);
1044 XFREE(MTYPE_BGP_PEER_IFNAME
, updgrp
->conf
->ifname
);
1046 XFREE(MTYPE_BGP_PEER
, updgrp
->conf
);
1047 XFREE(MTYPE_BGP_UPDGRP
, updgrp
);
1050 static void update_group_add_subgroup(struct update_group
*updgrp
,
1051 struct update_subgroup
*subgrp
)
1053 if (!updgrp
|| !subgrp
)
1056 LIST_INSERT_HEAD(&(updgrp
->subgrps
), subgrp
, updgrp_train
);
1057 subgrp
->update_group
= updgrp
;
1060 static void update_group_remove_subgroup(struct update_group
*updgrp
,
1061 struct update_subgroup
*subgrp
)
1063 if (!updgrp
|| !subgrp
)
1066 LIST_REMOVE(subgrp
, updgrp_train
);
1067 subgrp
->update_group
= NULL
;
1068 if (LIST_EMPTY(&(updgrp
->subgrps
)))
1069 update_group_delete(updgrp
);
1072 static struct update_subgroup
*
1073 update_subgroup_create(struct update_group
*updgrp
)
1075 struct update_subgroup
*subgrp
;
1077 subgrp
= XCALLOC(MTYPE_BGP_UPD_SUBGRP
, sizeof(struct update_subgroup
));
1078 update_subgroup_checkin(subgrp
, updgrp
);
1079 subgrp
->v_coalesce
= (UPDGRP_INST(updgrp
))->coalesce_time
;
1080 sync_init(subgrp
, updgrp
);
1081 bpacket_queue_init(SUBGRP_PKTQ(subgrp
));
1082 bpacket_queue_add(SUBGRP_PKTQ(subgrp
), NULL
, NULL
);
1083 TAILQ_INIT(&(subgrp
->adjq
));
1084 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1085 zlog_debug("create subgroup u%" PRIu64
":s%" PRIu64
, updgrp
->id
,
1088 update_group_add_subgroup(updgrp
, subgrp
);
1090 UPDGRP_INCR_STAT(updgrp
, subgrps_created
);
1095 static void update_subgroup_delete(struct update_subgroup
*subgrp
)
1100 if (subgrp
->update_group
)
1101 UPDGRP_INCR_STAT(subgrp
->update_group
, subgrps_deleted
);
1103 THREAD_OFF(subgrp
->t_merge_check
);
1104 THREAD_OFF(subgrp
->t_coalesce
);
1106 bpacket_queue_cleanup(SUBGRP_PKTQ(subgrp
));
1107 subgroup_clear_table(subgrp
);
1109 sync_delete(subgrp
);
1111 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
) && subgrp
->update_group
)
1112 zlog_debug("delete subgroup u%" PRIu64
":s%" PRIu64
,
1113 subgrp
->update_group
->id
, subgrp
->id
);
1115 update_group_remove_subgroup(subgrp
->update_group
, subgrp
);
1117 XFREE(MTYPE_BGP_UPD_SUBGRP
, subgrp
);
1120 void update_subgroup_inherit_info(struct update_subgroup
*to
,
1121 struct update_subgroup
*from
)
1126 to
->sflags
= from
->sflags
;
1130 * update_subgroup_check_delete
1132 * Delete a subgroup if it is ready to be deleted.
1134 * Returns true if the subgroup was deleted.
1136 static bool update_subgroup_check_delete(struct update_subgroup
*subgrp
)
1141 if (!LIST_EMPTY(&(subgrp
->peers
)))
1144 update_subgroup_delete(subgrp
);
1150 * update_subgroup_add_peer
1152 * @param send_enqueued_packets If true all currently enqueued packets will
1153 * also be sent to the peer.
1155 static void update_subgroup_add_peer(struct update_subgroup
*subgrp
,
1156 struct peer_af
*paf
,
1157 int send_enqueued_pkts
)
1159 struct bpacket
*pkt
;
1161 if (!subgrp
|| !paf
)
1164 LIST_INSERT_HEAD(&(subgrp
->peers
), paf
, subgrp_train
);
1165 paf
->subgroup
= subgrp
;
1166 subgrp
->peer_count
++;
1168 if (bgp_debug_peer_updout_enabled(paf
->peer
->host
)) {
1169 UPDGRP_PEER_DBG_EN(subgrp
->update_group
);
1172 SUBGRP_INCR_STAT(subgrp
, join_events
);
1174 if (send_enqueued_pkts
) {
1175 pkt
= bpacket_queue_first(SUBGRP_PKTQ(subgrp
));
1179 * Hang the peer off of the last, placeholder, packet in the
1180 * queue. This means it won't see any of the packets that are
1181 * currently the queue.
1183 pkt
= bpacket_queue_last(SUBGRP_PKTQ(subgrp
));
1184 assert(pkt
->buffer
== NULL
);
1187 bpacket_add_peer(pkt
, paf
);
1189 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1190 zlog_debug("peer %s added to subgroup s%" PRIu64
,
1191 paf
->peer
->host
, subgrp
->id
);
1195 * update_subgroup_remove_peer_internal
1197 * Internal function that removes a peer from a subgroup, but does not
1198 * delete the subgroup. A call to this function must almost always be
1199 * followed by a call to update_subgroup_check_delete().
1201 * @see update_subgroup_remove_peer
1203 static void update_subgroup_remove_peer_internal(struct update_subgroup
*subgrp
,
1204 struct peer_af
*paf
)
1206 assert(subgrp
&& paf
&& subgrp
->update_group
);
1208 if (bgp_debug_peer_updout_enabled(paf
->peer
->host
)) {
1209 UPDGRP_PEER_DBG_DIS(subgrp
->update_group
);
1212 bpacket_queue_remove_peer(paf
);
1213 LIST_REMOVE(paf
, subgrp_train
);
1214 paf
->subgroup
= NULL
;
1215 subgrp
->peer_count
--;
1217 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1218 zlog_debug("peer %s deleted from subgroup s%"
1219 PRIu64
" peer cnt %d",
1220 paf
->peer
->host
, subgrp
->id
, subgrp
->peer_count
);
1221 SUBGRP_INCR_STAT(subgrp
, prune_events
);
1225 * update_subgroup_remove_peer
1227 void update_subgroup_remove_peer(struct update_subgroup
*subgrp
,
1228 struct peer_af
*paf
)
1230 if (!subgrp
|| !paf
)
1233 update_subgroup_remove_peer_internal(subgrp
, paf
);
1235 if (update_subgroup_check_delete(subgrp
))
1239 * The deletion of the peer may have caused some packets to be
1240 * deleted from the subgroup packet queue. Check if the subgroup can
1243 update_subgroup_check_merge(subgrp
, "removed peer from subgroup");
1246 static struct update_subgroup
*update_subgroup_find(struct update_group
*updgrp
,
1247 struct peer_af
*paf
)
1249 struct update_subgroup
*subgrp
= NULL
;
1252 if (paf
->subgroup
) {
1258 if (!peer_established(PAF_PEER(paf
)))
1261 UPDGRP_FOREACH_SUBGRP (updgrp
, subgrp
) {
1262 if (subgrp
->version
!= version
1263 || CHECK_FLAG(subgrp
->sflags
,
1264 SUBGRP_STATUS_DEFAULT_ORIGINATE
))
1268 * The version number is not meaningful on a subgroup that needs
1271 if (update_subgroup_needs_refresh(subgrp
))
1281 * update_subgroup_ready_for_merge
1283 * Returns true if this subgroup is in a state that allows it to be
1284 * merged into another subgroup.
1286 static bool update_subgroup_ready_for_merge(struct update_subgroup
*subgrp
)
1290 * Not ready if there are any encoded packets waiting to be written
1293 if (!bpacket_queue_is_empty(SUBGRP_PKTQ(subgrp
)))
1297 * Not ready if there enqueued updates waiting to be encoded.
1299 if (!advertise_list_is_empty(subgrp
))
1303 * Don't attempt to merge a subgroup that needs a refresh. For one,
1304 * we can't determine if the adj_out of such a group matches that of
1307 if (update_subgroup_needs_refresh(subgrp
))
1314 * update_subgrp_can_merge_into
1316 * Returns true if the first subgroup can merge into the second
1319 static int update_subgroup_can_merge_into(struct update_subgroup
*subgrp
,
1320 struct update_subgroup
*target
)
1323 if (subgrp
== target
)
1327 * Both must have processed the BRIB to the same point in order to
1330 if (subgrp
->version
!= target
->version
)
1333 if (CHECK_FLAG(subgrp
->sflags
, SUBGRP_STATUS_DEFAULT_ORIGINATE
)
1334 != CHECK_FLAG(target
->sflags
, SUBGRP_STATUS_DEFAULT_ORIGINATE
))
1337 if (subgrp
->adj_count
!= target
->adj_count
)
1340 return update_subgroup_ready_for_merge(target
);
1344 * update_subgroup_merge
1346 * Merge the first subgroup into the second one.
1348 static void update_subgroup_merge(struct update_subgroup
*subgrp
,
1349 struct update_subgroup
*target
,
1352 struct peer_af
*paf
;
1356 assert(subgrp
->adj_count
== target
->adj_count
);
1358 peer_count
= subgrp
->peer_count
;
1361 paf
= LIST_FIRST(&subgrp
->peers
);
1365 update_subgroup_remove_peer_internal(subgrp
, paf
);
1368 * Add the peer to the target subgroup, while making sure that
1369 * any currently enqueued packets won't be sent to it. Enqueued
1370 * packets could, for example, result in an unnecessary withdraw
1371 * followed by an advertise.
1373 update_subgroup_add_peer(target
, paf
, 0);
1376 SUBGRP_INCR_STAT(target
, merge_events
);
1378 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1379 zlog_debug("u%" PRIu64
":s%" PRIu64
" (%d peers) merged into u%" PRIu64
":s%" PRIu64
", trigger: %s",
1380 subgrp
->update_group
->id
, subgrp
->id
, peer_count
,
1381 target
->update_group
->id
, target
->id
,
1382 reason
? reason
: "unknown");
1384 result
= update_subgroup_check_delete(subgrp
);
1389 * update_subgroup_check_merge
1391 * Merge this subgroup into another subgroup if possible.
1393 * Returns true if the subgroup has been merged. The subgroup pointer
1394 * should not be accessed in this case.
1396 bool update_subgroup_check_merge(struct update_subgroup
*subgrp
,
1399 struct update_subgroup
*target
;
1401 if (!update_subgroup_ready_for_merge(subgrp
))
1405 * Look for a subgroup to merge into.
1407 UPDGRP_FOREACH_SUBGRP (subgrp
->update_group
, target
) {
1408 if (update_subgroup_can_merge_into(subgrp
, target
))
1415 update_subgroup_merge(subgrp
, target
, reason
);
1420 * update_subgroup_merge_check_thread_cb
1422 static void update_subgroup_merge_check_thread_cb(struct thread
*thread
)
1424 struct update_subgroup
*subgrp
;
1426 subgrp
= THREAD_ARG(thread
);
1428 subgrp
->t_merge_check
= NULL
;
1430 update_subgroup_check_merge(subgrp
, "triggered merge check");
1434 * update_subgroup_trigger_merge_check
1436 * Triggers a call to update_subgroup_check_merge() on a clean context.
1438 * @param force If true, the merge check will be triggered even if the
1439 * subgroup doesn't currently look ready for a merge.
1441 * Returns true if a merge check will be performed shortly.
1443 bool update_subgroup_trigger_merge_check(struct update_subgroup
*subgrp
,
1446 if (subgrp
->t_merge_check
)
1449 if (!force
&& !update_subgroup_ready_for_merge(subgrp
))
1452 subgrp
->t_merge_check
= NULL
;
1453 thread_add_timer_msec(bm
->master
, update_subgroup_merge_check_thread_cb
,
1454 subgrp
, 0, &subgrp
->t_merge_check
);
1456 SUBGRP_INCR_STAT(subgrp
, merge_checks_triggered
);
1462 * update_subgroup_copy_adj_out
1464 * Helper function that clones the adj out (state about advertised
1465 * routes) from one subgroup to another. It assumes that the adj out
1466 * of the target subgroup is empty.
1468 static void update_subgroup_copy_adj_out(struct update_subgroup
*source
,
1469 struct update_subgroup
*dest
)
1471 struct bgp_adj_out
*aout
, *aout_copy
;
1473 SUBGRP_FOREACH_ADJ (source
, aout
) {
1477 aout_copy
= bgp_adj_out_alloc(dest
, aout
->dest
,
1478 aout
->addpath_tx_id
);
1480 aout
->attr
? bgp_attr_intern(aout
->attr
) : NULL
;
1483 dest
->scount
= source
->scount
;
1487 * update_subgroup_copy_packets
1489 * Copy packets after and including the given packet to the subgroup
1492 * Returns the number of packets copied.
1494 static int update_subgroup_copy_packets(struct update_subgroup
*dest
,
1495 struct bpacket
*pkt
)
1500 while (pkt
&& pkt
->buffer
) {
1501 bpacket_queue_add(SUBGRP_PKTQ(dest
), stream_dup(pkt
->buffer
),
1504 pkt
= bpacket_next(pkt
);
1510 static bool updgrp_prefix_list_update(struct update_group
*updgrp
,
1514 struct bgp_filter
*filter
;
1516 peer
= UPDGRP_PEER(updgrp
);
1517 filter
= &peer
->filter
[UPDGRP_AFI(updgrp
)][UPDGRP_SAFI(updgrp
)];
1519 if (PREFIX_LIST_OUT_NAME(filter
)
1520 && (strcmp(name
, PREFIX_LIST_OUT_NAME(filter
)) == 0)) {
1521 PREFIX_LIST_OUT(filter
) = prefix_list_lookup(
1522 UPDGRP_AFI(updgrp
), PREFIX_LIST_OUT_NAME(filter
));
1528 static bool updgrp_filter_list_update(struct update_group
*updgrp
,
1532 struct bgp_filter
*filter
;
1534 peer
= UPDGRP_PEER(updgrp
);
1535 filter
= &peer
->filter
[UPDGRP_AFI(updgrp
)][UPDGRP_SAFI(updgrp
)];
1537 if (FILTER_LIST_OUT_NAME(filter
)
1538 && (strcmp(name
, FILTER_LIST_OUT_NAME(filter
)) == 0)) {
1539 FILTER_LIST_OUT(filter
) =
1540 as_list_lookup(FILTER_LIST_OUT_NAME(filter
));
1546 static bool updgrp_distribute_list_update(struct update_group
*updgrp
,
1550 struct bgp_filter
*filter
;
1552 peer
= UPDGRP_PEER(updgrp
);
1553 filter
= &peer
->filter
[UPDGRP_AFI(updgrp
)][UPDGRP_SAFI(updgrp
)];
1555 if (DISTRIBUTE_OUT_NAME(filter
)
1556 && (strcmp(name
, DISTRIBUTE_OUT_NAME(filter
)) == 0)) {
1557 DISTRIBUTE_OUT(filter
) = access_list_lookup(
1558 UPDGRP_AFI(updgrp
), DISTRIBUTE_OUT_NAME(filter
));
1564 static int updgrp_route_map_update(struct update_group
*updgrp
,
1565 const char *name
, int *def_rmap_changed
)
1568 struct bgp_filter
*filter
;
1573 peer
= UPDGRP_PEER(updgrp
);
1574 afi
= UPDGRP_AFI(updgrp
);
1575 safi
= UPDGRP_SAFI(updgrp
);
1576 filter
= &peer
->filter
[afi
][safi
];
1578 if (ROUTE_MAP_OUT_NAME(filter
)
1579 && (strcmp(name
, ROUTE_MAP_OUT_NAME(filter
)) == 0)) {
1580 ROUTE_MAP_OUT(filter
) = route_map_lookup_by_name(name
);
1585 if (UNSUPPRESS_MAP_NAME(filter
)
1586 && (strcmp(name
, UNSUPPRESS_MAP_NAME(filter
)) == 0)) {
1587 UNSUPPRESS_MAP(filter
) = route_map_lookup_by_name(name
);
1591 /* process default-originate route-map */
1592 if (peer
->default_rmap
[afi
][safi
].name
1593 && (strcmp(name
, peer
->default_rmap
[afi
][safi
].name
) == 0)) {
1594 peer
->default_rmap
[afi
][safi
].map
=
1595 route_map_lookup_by_name(name
);
1596 if (def_rmap_changed
)
1597 *def_rmap_changed
= 1;
1603 * hash iteration callback function to process a policy change for an
1604 * update group. Check if the changed policy matches the updgrp's
1605 * outbound route-map or unsuppress-map or default-originate map or
1606 * filter-list or prefix-list or distribute-list.
1607 * Trigger update generation accordingly.
1609 static int updgrp_policy_update_walkcb(struct update_group
*updgrp
, void *arg
)
1611 struct updwalk_context
*ctx
= arg
;
1612 struct update_subgroup
*subgrp
;
1614 int def_changed
= 0;
1616 if (!updgrp
|| !ctx
|| !ctx
->policy_name
)
1617 return UPDWALK_CONTINUE
;
1619 switch (ctx
->policy_type
) {
1620 case BGP_POLICY_ROUTE_MAP
:
1621 changed
= updgrp_route_map_update(updgrp
, ctx
->policy_name
,
1624 case BGP_POLICY_FILTER_LIST
:
1625 changed
= updgrp_filter_list_update(updgrp
, ctx
->policy_name
);
1627 case BGP_POLICY_PREFIX_LIST
:
1628 changed
= updgrp_prefix_list_update(updgrp
, ctx
->policy_name
);
1630 case BGP_POLICY_DISTRIBUTE_LIST
:
1632 updgrp_distribute_list_update(updgrp
, ctx
->policy_name
);
1638 /* If not doing route update, return after updating "config" */
1639 if (!ctx
->policy_route_update
)
1640 return UPDWALK_CONTINUE
;
1642 /* If nothing has changed, return after updating "config" */
1643 if (!changed
&& !def_changed
)
1644 return UPDWALK_CONTINUE
;
1647 * If something has changed, at the beginning of a route-map
1649 * event, mark each subgroup's needs-refresh bit. For one, it signals to
1650 * whoever that the subgroup needs a refresh. Second, it prevents
1652 * merge of this subgroup with another before a complete (outbound)
1655 if (ctx
->policy_event_start_flag
) {
1656 UPDGRP_FOREACH_SUBGRP (updgrp
, subgrp
) {
1657 update_subgroup_set_needs_refresh(subgrp
, 1);
1659 return UPDWALK_CONTINUE
;
1662 UPDGRP_FOREACH_SUBGRP (updgrp
, subgrp
) {
1663 /* Avoid supressing duplicate routes later
1664 * when processing in subgroup_announce_table().
1666 SET_FLAG(subgrp
->sflags
, SUBGRP_STATUS_FORCE_UPDATES
);
1669 if (bgp_debug_update(NULL
, NULL
, updgrp
, 0))
1671 "u%" PRIu64
":s%" PRIu64
" announcing routes upon policy %s (type %d) change",
1672 updgrp
->id
, subgrp
->id
,
1673 ctx
->policy_name
, ctx
->policy_type
);
1674 subgroup_announce_route(subgrp
);
1677 if (bgp_debug_update(NULL
, NULL
, updgrp
, 0))
1679 "u%" PRIu64
":s%" PRIu64
" announcing default upon default routemap %s change",
1680 updgrp
->id
, subgrp
->id
,
1682 if (route_map_lookup_by_name(ctx
->policy_name
)) {
1684 * When there is change in routemap, this flow
1685 * is triggered. the routemap is still present
1686 * in lib, hence its a update flow. The flag
1687 * needs to be unset.
1689 UNSET_FLAG(subgrp
->sflags
,
1690 SUBGRP_STATUS_DEFAULT_ORIGINATE
);
1691 subgroup_default_originate(subgrp
, 0);
1694 * This is a explicit withdraw, since the
1695 * routemap is not present in routemap lib. need
1696 * to pass 1 for withdraw arg.
1698 subgroup_default_originate(subgrp
, 1);
1701 update_subgroup_set_needs_refresh(subgrp
, 0);
1703 return UPDWALK_CONTINUE
;
1706 static int update_group_walkcb(struct hash_bucket
*bucket
, void *arg
)
1708 struct update_group
*updgrp
= bucket
->data
;
1709 struct updwalk_context
*wctx
= arg
;
1710 int ret
= (*wctx
->cb
)(updgrp
, wctx
->context
);
1714 static int update_group_periodic_merge_walkcb(struct update_group
*updgrp
,
1717 struct update_subgroup
*subgrp
;
1718 struct update_subgroup
*tmp_subgrp
;
1719 const char *reason
= arg
;
1721 UPDGRP_FOREACH_SUBGRP_SAFE (updgrp
, subgrp
, tmp_subgrp
)
1722 update_subgroup_check_merge(subgrp
, reason
);
1723 return UPDWALK_CONTINUE
;
1726 /********************
1728 ********************/
1731 * trigger function when a policy (route-map/filter-list/prefix-list/
1732 * distribute-list etc.) content changes. Go through all the
1733 * update groups and process the change.
1735 * bgp: the bgp instance
1736 * ptype: the type of policy that got modified, see bgpd.h
1737 * pname: name of the policy
1738 * route_update: flag to control if an automatic update generation should
1740 * start_event: flag that indicates if it's the beginning of the change.
1741 * Esp. when the user is changing the content interactively
1742 * over multiple statements. Useful to set dirty flag on
1745 void update_group_policy_update(struct bgp
*bgp
, enum bgp_policy_type ptype
,
1746 const char *pname
, bool route_update
,
1749 struct updwalk_context ctx
;
1751 memset(&ctx
, 0, sizeof(ctx
));
1752 ctx
.policy_type
= ptype
;
1753 ctx
.policy_name
= pname
;
1754 ctx
.policy_route_update
= route_update
;
1755 ctx
.policy_event_start_flag
= start_event
;
1758 update_group_walk(bgp
, updgrp_policy_update_walkcb
, &ctx
);
1762 * update_subgroup_split_peer
1764 * Ensure that the given peer is in a subgroup of its own in the
1765 * specified update group.
1767 void update_subgroup_split_peer(struct peer_af
*paf
,
1768 struct update_group
*updgrp
)
1770 struct update_subgroup
*old_subgrp
, *subgrp
;
1774 old_subgrp
= paf
->subgroup
;
1777 updgrp
= old_subgrp
->update_group
;
1780 * If the peer is alone in its subgroup, reuse the existing
1783 if (old_subgrp
->peer_count
== 1) {
1784 if (updgrp
== old_subgrp
->update_group
)
1787 subgrp
= old_subgrp
;
1788 old_id
= old_subgrp
->update_group
->id
;
1790 if (bgp_debug_peer_updout_enabled(paf
->peer
->host
)) {
1791 UPDGRP_PEER_DBG_DIS(old_subgrp
->update_group
);
1794 update_group_remove_subgroup(old_subgrp
->update_group
,
1796 update_group_add_subgroup(updgrp
, subgrp
);
1798 if (bgp_debug_peer_updout_enabled(paf
->peer
->host
)) {
1799 UPDGRP_PEER_DBG_EN(updgrp
);
1801 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1802 zlog_debug("u%" PRIu64
":s%" PRIu64
" peer %s moved to u%" PRIu64
":s%" PRIu64
,
1803 old_id
, subgrp
->id
, paf
->peer
->host
,
1804 updgrp
->id
, subgrp
->id
);
1807 * The state of the subgroup (adj_out, advs, packet queue etc)
1808 * is consistent internally, but may not be identical to other
1809 * subgroups in the new update group even if the version number
1810 * matches up. Make sure a full refresh is done before the
1811 * subgroup is merged with another.
1813 update_subgroup_set_needs_refresh(subgrp
, 1);
1815 SUBGRP_INCR_STAT(subgrp
, updgrp_switch_events
);
1820 * Create a new subgroup under the specified update group, and copy
1821 * over relevant state to it.
1823 subgrp
= update_subgroup_create(updgrp
);
1824 update_subgroup_inherit_info(subgrp
, old_subgrp
);
1826 subgrp
->split_from
.update_group_id
= old_subgrp
->update_group
->id
;
1827 subgrp
->split_from
.subgroup_id
= old_subgrp
->id
;
1830 * Copy out relevant state from the old subgroup.
1832 update_subgroup_copy_adj_out(paf
->subgroup
, subgrp
);
1833 update_subgroup_copy_packets(subgrp
, paf
->next_pkt_to_send
);
1835 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
1836 zlog_debug("u%" PRIu64
":s%" PRIu64
" peer %s split and moved into u%" PRIu64
":s%" PRIu64
,
1837 paf
->subgroup
->update_group
->id
, paf
->subgroup
->id
,
1838 paf
->peer
->host
, updgrp
->id
, subgrp
->id
);
1840 SUBGRP_INCR_STAT(paf
->subgroup
, split_events
);
1843 * Since queued advs were left behind, this new subgroup needs a
1846 update_subgroup_set_needs_refresh(subgrp
, 1);
1849 * Remove peer from old subgroup, and add it to the new one.
1851 update_subgroup_remove_peer(paf
->subgroup
, paf
);
1853 update_subgroup_add_peer(subgrp
, paf
, 1);
1856 void update_bgp_group_init(struct bgp
*bgp
)
1861 bgp
->update_groups
[afid
] =
1862 hash_create(updgrp_hash_key_make
, updgrp_hash_cmp
,
1863 "BGP Update Group Hash");
1866 void update_bgp_group_free(struct bgp
*bgp
)
1871 if (bgp
->update_groups
[afid
]) {
1872 hash_free(bgp
->update_groups
[afid
]);
1873 bgp
->update_groups
[afid
] = NULL
;
1878 void update_group_show(struct bgp
*bgp
, afi_t afi
, safi_t safi
, struct vty
*vty
,
1879 uint64_t subgrp_id
, bool uj
)
1881 struct updwalk_context ctx
;
1882 json_object
*json_vrf_obj
= NULL
;
1884 memset(&ctx
, 0, sizeof(ctx
));
1886 ctx
.subgrp_id
= subgrp_id
;
1890 ctx
.json_updategrps
= json_object_new_object();
1891 json_vrf_obj
= json_object_new_object();
1894 update_group_af_walk(bgp
, afi
, safi
, update_group_show_walkcb
, &ctx
);
1899 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
1900 vname
= VRF_DEFAULT_NAME
;
1903 json_object_object_add(json_vrf_obj
, vname
,
1904 ctx
.json_updategrps
);
1905 vty_json(vty
, json_vrf_obj
);
1910 * update_group_show_stats
1912 * Show global statistics about update groups.
1914 void update_group_show_stats(struct bgp
*bgp
, struct vty
*vty
)
1916 vty_out(vty
, "Update groups created: %u\n",
1917 bgp
->update_group_stats
.updgrps_created
);
1918 vty_out(vty
, "Update groups deleted: %u\n",
1919 bgp
->update_group_stats
.updgrps_deleted
);
1920 vty_out(vty
, "Update subgroups created: %u\n",
1921 bgp
->update_group_stats
.subgrps_created
);
1922 vty_out(vty
, "Update subgroups deleted: %u\n",
1923 bgp
->update_group_stats
.subgrps_deleted
);
1924 vty_out(vty
, "Join events: %u\n", bgp
->update_group_stats
.join_events
);
1925 vty_out(vty
, "Prune events: %u\n",
1926 bgp
->update_group_stats
.prune_events
);
1927 vty_out(vty
, "Merge events: %u\n",
1928 bgp
->update_group_stats
.merge_events
);
1929 vty_out(vty
, "Split events: %u\n",
1930 bgp
->update_group_stats
.split_events
);
1931 vty_out(vty
, "Update group switch events: %u\n",
1932 bgp
->update_group_stats
.updgrp_switch_events
);
1933 vty_out(vty
, "Peer route refreshes combined: %u\n",
1934 bgp
->update_group_stats
.peer_refreshes_combined
);
1935 vty_out(vty
, "Merge checks triggered: %u\n",
1936 bgp
->update_group_stats
.merge_checks_triggered
);
1940 * update_group_adjust_peer
1942 void update_group_adjust_peer(struct peer_af
*paf
)
1944 struct update_group
*updgrp
;
1945 struct update_subgroup
*subgrp
, *old_subgrp
;
1951 peer
= PAF_PEER(paf
);
1952 if (!peer_established(peer
)) {
1956 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
)) {
1960 if (!peer
->afc_nego
[paf
->afi
][paf
->safi
]) {
1964 updgrp
= update_group_find(paf
);
1966 updgrp
= update_group_create(paf
);
1968 flog_err(EC_BGP_UPDGRP_CREATE
,
1969 "couldn't create update group for peer %s",
1975 old_subgrp
= paf
->subgroup
;
1980 * If the update group of the peer is unchanged, the peer can
1982 * in its existing subgroup and we're done.
1984 if (old_subgrp
->update_group
== updgrp
)
1988 * The peer is switching between update groups. Put it in its
1989 * own subgroup under the new update group.
1991 update_subgroup_split_peer(paf
, updgrp
);
1995 subgrp
= update_subgroup_find(updgrp
, paf
);
1997 subgrp
= update_subgroup_create(updgrp
);
2002 update_subgroup_add_peer(subgrp
, paf
, 1);
2003 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
2004 zlog_debug("u%" PRIu64
":s%" PRIu64
" add peer %s", updgrp
->id
,
2005 subgrp
->id
, paf
->peer
->host
);
2010 int update_group_adjust_soloness(struct peer
*peer
, int set
)
2012 struct peer_group
*group
;
2013 struct listnode
*node
, *nnode
;
2015 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2016 peer_lonesoul_or_not(peer
, set
);
2017 if (peer_established(peer
))
2018 bgp_announce_route_all(peer
);
2020 group
= peer
->group
;
2021 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2022 peer_lonesoul_or_not(peer
, set
);
2023 if (peer_established(peer
))
2024 bgp_announce_route_all(peer
);
2031 * update_subgroup_rib
2033 struct bgp_table
*update_subgroup_rib(struct update_subgroup
*subgrp
)
2037 bgp
= SUBGRP_INST(subgrp
);
2041 return bgp
->rib
[SUBGRP_AFI(subgrp
)][SUBGRP_SAFI(subgrp
)];
2044 void update_group_af_walk(struct bgp
*bgp
, afi_t afi
, safi_t safi
,
2045 updgrp_walkcb cb
, void *ctx
)
2047 struct updwalk_context wctx
;
2052 afid
= afindex(afi
, safi
);
2053 if (afid
>= BGP_AF_MAX
)
2056 memset(&wctx
, 0, sizeof(wctx
));
2060 if (bgp
->update_groups
[afid
])
2061 hash_walk(bgp
->update_groups
[afid
], update_group_walkcb
, &wctx
);
2064 void update_group_walk(struct bgp
*bgp
, updgrp_walkcb cb
, void *ctx
)
2069 FOREACH_AFI_SAFI (afi
, safi
) {
2070 update_group_af_walk(bgp
, afi
, safi
, cb
, ctx
);
2074 void update_group_periodic_merge(struct bgp
*bgp
)
2076 char reason
[] = "periodic merge check";
2078 update_group_walk(bgp
, update_group_periodic_merge_walkcb
,
2083 update_group_default_originate_route_map_walkcb(struct update_group
*updgrp
,
2086 struct update_subgroup
*subgrp
;
2091 UPDGRP_FOREACH_SUBGRP (updgrp
, subgrp
) {
2092 peer
= SUBGRP_PEER(subgrp
);
2093 afi
= SUBGRP_AFI(subgrp
);
2094 safi
= SUBGRP_SAFI(subgrp
);
2096 if (peer
->default_rmap
[afi
][safi
].name
) {
2098 * When there is change in routemap this flow will
2099 * be triggered. We need to unset the Flag to ensure
2100 * the update flow gets triggered.
2102 UNSET_FLAG(subgrp
->sflags
,
2103 SUBGRP_STATUS_DEFAULT_ORIGINATE
);
2104 subgroup_default_originate(subgrp
, 0);
2108 return UPDWALK_CONTINUE
;
2111 void update_group_refresh_default_originate_route_map(struct thread
*thread
)
2114 char reason
[] = "refresh default-originate route-map";
2116 bgp
= THREAD_ARG(thread
);
2117 update_group_walk(bgp
, update_group_default_originate_route_map_walkcb
,
2119 THREAD_OFF(bgp
->t_rmap_def_originate_eval
);
2124 * peer_af_announce_route
2126 * Refreshes routes out to a peer_af immediately.
2128 * If the combine parameter is true, then this function will try to
2129 * gather other peers in the subgroup for which a route announcement
2130 * is pending and efficently announce routes to all of them.
2132 * For now, the 'combine' option has an effect only if all peers in
2133 * the subgroup have a route announcement pending.
2135 void peer_af_announce_route(struct peer_af
*paf
, int combine
)
2137 struct update_subgroup
*subgrp
;
2138 struct peer_af
*cur_paf
;
2141 subgrp
= paf
->subgroup
;
2146 * If there are other peers in the old subgroup that also need
2147 * routes to be announced, pull them into the peer's new
2149 * Combine route announcement with other peers if possible.
2151 * For now, we combine only if all peers in the subgroup have an
2152 * announcement pending.
2156 SUBGRP_FOREACH_PEER (subgrp
, cur_paf
) {
2160 if (cur_paf
->t_announce_route
)
2168 * Announce to the peer alone if we were not asked to combine peers,
2169 * or if some peers don't have a route annoucement pending.
2171 if (!combine
|| !all_pending
) {
2172 update_subgroup_split_peer(paf
, NULL
);
2173 subgrp
= paf
->subgroup
;
2175 assert(subgrp
&& subgrp
->update_group
);
2176 if (bgp_debug_update(paf
->peer
, NULL
, subgrp
->update_group
, 0))
2177 zlog_debug("u%" PRIu64
":s%" PRIu64
" %s announcing routes",
2178 subgrp
->update_group
->id
, subgrp
->id
,
2181 subgroup_announce_route(paf
->subgroup
);
2186 * We will announce routes the entire subgroup.
2188 * First stop refresh timers on all the other peers.
2190 SUBGRP_FOREACH_PEER (subgrp
, cur_paf
) {
2194 bgp_stop_announce_route_timer(cur_paf
);
2197 if (bgp_debug_update(paf
->peer
, NULL
, subgrp
->update_group
, 0))
2198 zlog_debug("u%" PRIu64
":s%" PRIu64
" announcing routes to %s, combined into %d peers",
2199 subgrp
->update_group
->id
, subgrp
->id
,
2200 paf
->peer
->host
, subgrp
->peer_count
);
2202 subgroup_announce_route(subgrp
);
2204 SUBGRP_INCR_STAT_BY(subgrp
, peer_refreshes_combined
,
2205 subgrp
->peer_count
- 1);
2208 void subgroup_trigger_write(struct update_subgroup
*subgrp
)
2210 struct peer_af
*paf
;
2213 * For each peer in the subgroup, schedule a job to pull packets from
2214 * the subgroup output queue into their own output queue. This action
2215 * will trigger a write job on the I/O thread.
2217 SUBGRP_FOREACH_PEER (subgrp
, paf
)
2218 if (peer_established(paf
->peer
))
2219 thread_add_timer_msec(
2220 bm
->master
, bgp_generate_updgrp_packets
,
2222 &paf
->peer
->t_generate_updgrp_packets
);
2225 int update_group_clear_update_dbg(struct update_group
*updgrp
, void *arg
)
2227 UPDGRP_PEER_DBG_OFF(updgrp
);
2228 return UPDWALK_CONTINUE
;
2231 /* Return true if we should addpath encode NLRI to this peer */
2232 bool bgp_addpath_encode_tx(struct peer
*peer
, afi_t afi
, safi_t safi
)
2234 return (CHECK_FLAG(peer
->af_cap
[afi
][safi
], PEER_CAP_ADDPATH_AF_TX_ADV
)
2235 && CHECK_FLAG(peer
->af_cap
[afi
][safi
],
2236 PEER_CAP_ADDPATH_AF_RX_RCV
));
2239 bool bgp_addpath_capable(struct bgp_path_info
*bpi
, struct peer
*peer
,
2240 afi_t afi
, safi_t safi
)
2242 return (bgp_addpath_tx_path(peer
->addpath_type
[afi
][safi
], bpi
) ||
2243 (safi
== SAFI_LABELED_UNICAST
&&
2244 bgp_addpath_tx_path(peer
->addpath_type
[afi
][SAFI_UNICAST
],
2248 bool bgp_check_selected(struct bgp_path_info
*bpi
, struct peer
*peer
,
2249 bool addpath_capable
, afi_t afi
, safi_t safi
)
2251 return (CHECK_FLAG(bpi
->flags
, BGP_PATH_SELECTED
) ||
2252 (addpath_capable
&& bgp_addpath_capable(bpi
, peer
, afi
, safi
)));