1 /* BGP-4, BGP-4+ daemon program
2 * Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "sockunion.h"
38 #include "workqueue.h"
46 #include "frr_pthread.h"
49 #include "bgpd/bgpd.h"
50 #include "bgpd/bgp_table.h"
51 #include "bgpd/bgp_aspath.h"
52 #include "bgpd/bgp_route.h"
53 #include "bgpd/bgp_dump.h"
54 #include "bgpd/bgp_debug.h"
55 #include "bgpd/bgp_errors.h"
56 #include "bgpd/bgp_community.h"
57 #include "bgpd/bgp_attr.h"
58 #include "bgpd/bgp_regex.h"
59 #include "bgpd/bgp_clist.h"
60 #include "bgpd/bgp_fsm.h"
61 #include "bgpd/bgp_packet.h"
62 #include "bgpd/bgp_zebra.h"
63 #include "bgpd/bgp_open.h"
64 #include "bgpd/bgp_filter.h"
65 #include "bgpd/bgp_nexthop.h"
66 #include "bgpd/bgp_damp.h"
67 #include "bgpd/bgp_mplsvpn.h"
69 #include "bgpd/rfapi/bgp_rfapi_cfg.h"
70 #include "bgpd/rfapi/rfapi_backend.h"
72 #include "bgpd/bgp_evpn.h"
73 #include "bgpd/bgp_advertise.h"
74 #include "bgpd/bgp_network.h"
75 #include "bgpd/bgp_vty.h"
76 #include "bgpd/bgp_mpath.h"
77 #include "bgpd/bgp_nht.h"
78 #include "bgpd/bgp_updgrp.h"
79 #include "bgpd/bgp_bfd.h"
80 #include "bgpd/bgp_memory.h"
81 #include "bgpd/bgp_evpn_vty.h"
82 #include "bgpd/bgp_keepalives.h"
83 #include "bgpd/bgp_io.h"
84 #include "bgpd/bgp_ecommunity.h"
85 #include "bgpd/bgp_flowspec.h"
86 #include "bgpd/bgp_labelpool.h"
87 #include "bgpd/bgp_pbr.h"
88 #include "bgpd/bgp_addpath.h"
89 #include "bgpd/bgp_evpn_private.h"
90 #include "bgpd/bgp_evpn_mh.h"
91 #include "bgpd/bgp_mac.h"
93 DEFINE_MTYPE_STATIC(BGPD
, PEER_TX_SHUTDOWN_MSG
, "Peer shutdown message (TX)");
94 DEFINE_MTYPE_STATIC(BGPD
, BGP_EVPN_INFO
, "BGP EVPN instance information");
95 DEFINE_QOBJ_TYPE(bgp_master
)
97 DEFINE_QOBJ_TYPE(peer
)
98 DEFINE_HOOK(bgp_inst_delete
, (struct bgp
*bgp
), (bgp
))
100 /* BGP process wide configuration. */
101 static struct bgp_master bgp_master
;
103 /* BGP process wide configuration pointer to export. */
104 struct bgp_master
*bm
;
106 /* BGP community-list. */
107 struct community_list_handler
*bgp_clist
;
109 unsigned int multipath_num
= MULTIPATH_NUM
;
111 static void bgp_if_finish(struct bgp
*bgp
);
112 static void peer_drop_dynamic_neighbor(struct peer
*peer
);
114 extern struct zclient
*zclient
;
116 /* handle main socket creation or deletion */
117 static int bgp_check_main_socket(bool create
, struct bgp
*bgp
)
119 static int bgp_server_main_created
;
122 if (bgp_server_main_created
)
124 if (bgp_socket(bgp
, bm
->port
, bm
->address
) < 0)
125 return BGP_ERR_INVALID_VALUE
;
126 bgp_server_main_created
= 1;
129 if (!bgp_server_main_created
)
132 bgp_server_main_created
= 0;
136 void bgp_session_reset(struct peer
*peer
)
138 if (peer
->doppelganger
&& (peer
->doppelganger
->status
!= Deleted
)
139 && !(CHECK_FLAG(peer
->doppelganger
->flags
, PEER_FLAG_CONFIG_NODE
)))
140 peer_delete(peer
->doppelganger
);
142 BGP_EVENT_ADD(peer
, BGP_Stop
);
146 * During session reset, we may delete the doppelganger peer, which would
147 * be the next node to the current node. If the session reset was invoked
148 * during walk of peer list, we would end up accessing the freed next
149 * node. This function moves the next node along.
151 static void bgp_session_reset_safe(struct peer
*peer
, struct listnode
**nnode
)
156 n
= (nnode
) ? *nnode
: NULL
;
157 npeer
= (n
) ? listgetdata(n
) : NULL
;
159 if (peer
->doppelganger
&& (peer
->doppelganger
->status
!= Deleted
)
160 && !(CHECK_FLAG(peer
->doppelganger
->flags
,
161 PEER_FLAG_CONFIG_NODE
))) {
162 if (peer
->doppelganger
== npeer
)
163 /* nnode and *nnode are confirmed to be non-NULL here */
164 *nnode
= (*nnode
)->next
;
165 peer_delete(peer
->doppelganger
);
168 BGP_EVENT_ADD(peer
, BGP_Stop
);
171 /* BGP global flag manipulation. */
172 int bgp_option_set(int flag
)
176 case BGP_OPT_NO_LISTEN
:
177 case BGP_OPT_NO_ZEBRA
:
178 SET_FLAG(bm
->options
, flag
);
181 return BGP_ERR_INVALID_FLAG
;
186 int bgp_option_unset(int flag
)
190 case BGP_OPT_NO_ZEBRA
:
192 UNSET_FLAG(bm
->options
, flag
);
195 return BGP_ERR_INVALID_FLAG
;
200 int bgp_option_check(int flag
)
202 return CHECK_FLAG(bm
->options
, flag
);
205 /* Internal function to set BGP structure configureation flag. */
206 static void bgp_config_set(struct bgp
*bgp
, int config
)
208 SET_FLAG(bgp
->config
, config
);
211 static void bgp_config_unset(struct bgp
*bgp
, int config
)
213 UNSET_FLAG(bgp
->config
, config
);
216 static int bgp_config_check(struct bgp
*bgp
, int config
)
218 return CHECK_FLAG(bgp
->config
, config
);
221 /* Set BGP router identifier; distinguish between explicit config and other
224 static int bgp_router_id_set(struct bgp
*bgp
, const struct in_addr
*id
,
228 struct listnode
*node
, *nnode
;
230 if (IPV4_ADDR_SAME(&bgp
->router_id
, id
))
233 /* EVPN uses router id in RD, withdraw them */
234 if (is_evpn_enabled())
235 bgp_evpn_handle_router_id_update(bgp
, true);
237 vpn_handle_router_id_update(bgp
, true, is_config
);
239 IPV4_ADDR_COPY(&bgp
->router_id
, id
);
241 /* Set all peer's local identifier with this value. */
242 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
243 IPV4_ADDR_COPY(&peer
->local_id
, id
);
245 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
246 peer
->last_reset
= PEER_DOWN_RID_CHANGE
;
247 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
248 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
252 /* EVPN uses router id in RD, update them */
253 if (is_evpn_enabled())
254 bgp_evpn_handle_router_id_update(bgp
, false);
256 vpn_handle_router_id_update(bgp
, false, is_config
);
261 void bgp_router_id_zebra_bump(vrf_id_t vrf_id
, const struct prefix
*router_id
)
263 struct listnode
*node
, *nnode
;
265 struct in_addr
*addr
= NULL
;
267 if (router_id
!= NULL
)
268 addr
= (struct in_addr
*)&(router_id
->u
.prefix4
);
270 if (vrf_id
== VRF_DEFAULT
) {
271 /* Router-id change for default VRF has to also update all
273 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
)) {
274 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
)
278 bgp
->router_id_zebra
= *addr
;
280 addr
= &bgp
->router_id_zebra
;
282 if (!bgp
->router_id_static
.s_addr
) {
283 /* Router ID is updated if there are no active
286 if (bgp
->established_peers
== 0) {
287 if (BGP_DEBUG(zebra
, ZEBRA
))
289 "RID change : vrf %s(%u), RTR ID %s",
293 bgp_router_id_set(bgp
, addr
, false);
298 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
301 bgp
->router_id_zebra
= *addr
;
303 addr
= &bgp
->router_id_zebra
;
305 if (!bgp
->router_id_static
.s_addr
) {
306 /* Router ID is updated if there are no active
309 if (bgp
->established_peers
== 0) {
310 if (BGP_DEBUG(zebra
, ZEBRA
))
312 "RID change : vrf %s(%u), RTR ID %s",
316 bgp_router_id_set(bgp
, addr
, false);
324 void bgp_router_id_static_set(struct bgp
*bgp
, struct in_addr id
)
326 bgp
->router_id_static
= id
;
327 bgp_router_id_set(bgp
,
328 id
.s_addr
!= INADDR_ANY
? &id
: &bgp
->router_id_zebra
,
329 true /* is config */);
332 /* BGP's cluster-id control. */
333 int bgp_cluster_id_set(struct bgp
*bgp
, struct in_addr
*cluster_id
)
336 struct listnode
*node
, *nnode
;
338 if (bgp_config_check(bgp
, BGP_CONFIG_CLUSTER_ID
)
339 && IPV4_ADDR_SAME(&bgp
->cluster_id
, cluster_id
))
342 IPV4_ADDR_COPY(&bgp
->cluster_id
, cluster_id
);
343 bgp_config_set(bgp
, BGP_CONFIG_CLUSTER_ID
);
345 /* Clear all IBGP peer. */
346 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
347 if (peer
->sort
!= BGP_PEER_IBGP
)
350 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
351 peer
->last_reset
= PEER_DOWN_CLID_CHANGE
;
352 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
353 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
359 int bgp_cluster_id_unset(struct bgp
*bgp
)
362 struct listnode
*node
, *nnode
;
364 if (!bgp_config_check(bgp
, BGP_CONFIG_CLUSTER_ID
))
367 bgp
->cluster_id
.s_addr
= 0;
368 bgp_config_unset(bgp
, BGP_CONFIG_CLUSTER_ID
);
370 /* Clear all IBGP peer. */
371 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
372 if (peer
->sort
!= BGP_PEER_IBGP
)
375 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
376 peer
->last_reset
= PEER_DOWN_CLID_CHANGE
;
377 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
378 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
384 /* time_t value that is monotonicly increasing
385 * and uneffected by adjustments to system clock
387 time_t bgp_clock(void)
395 /* BGP timer configuration. */
396 void bgp_timers_set(struct bgp
*bgp
, uint32_t keepalive
, uint32_t holdtime
,
397 uint32_t connect_retry
)
399 bgp
->default_keepalive
=
400 (keepalive
< holdtime
/ 3 ? keepalive
: holdtime
/ 3);
401 bgp
->default_holdtime
= holdtime
;
402 bgp
->default_connect_retry
= connect_retry
;
405 /* mostly for completeness - CLI uses its own defaults */
406 void bgp_timers_unset(struct bgp
*bgp
)
408 bgp
->default_keepalive
= BGP_DEFAULT_KEEPALIVE
;
409 bgp
->default_holdtime
= BGP_DEFAULT_HOLDTIME
;
410 bgp
->default_connect_retry
= BGP_DEFAULT_CONNECT_RETRY
;
413 /* BGP confederation configuration. */
414 int bgp_confederation_id_set(struct bgp
*bgp
, as_t as
)
417 struct listnode
*node
, *nnode
;
421 return BGP_ERR_INVALID_AS
;
423 /* Remember - were we doing confederation before? */
424 already_confed
= bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
);
426 bgp_config_set(bgp
, BGP_CONFIG_CONFEDERATION
);
428 /* If we were doing confederation already, this is just an external
429 AS change. Just Reset EBGP sessions, not CONFED sessions. If we
430 were not doing confederation before, reset all EBGP sessions. */
431 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
432 bgp_peer_sort_t ptype
= peer_sort(peer
);
434 /* We're looking for peers who's AS is not local or part of our
436 if (already_confed
) {
437 if (ptype
== BGP_PEER_EBGP
) {
439 if (BGP_IS_VALID_STATE_FOR_NOTIF(
442 PEER_DOWN_CONFED_ID_CHANGE
;
444 peer
, BGP_NOTIFY_CEASE
,
445 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
447 bgp_session_reset_safe(peer
, &nnode
);
450 /* Not doign confederation before, so reset every
453 if (ptype
!= BGP_PEER_IBGP
) {
454 /* Reset the local_as to be our EBGP one */
455 if (ptype
== BGP_PEER_EBGP
)
457 if (BGP_IS_VALID_STATE_FOR_NOTIF(
460 PEER_DOWN_CONFED_ID_CHANGE
;
462 peer
, BGP_NOTIFY_CEASE
,
463 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
465 bgp_session_reset_safe(peer
, &nnode
);
472 int bgp_confederation_id_unset(struct bgp
*bgp
)
475 struct listnode
*node
, *nnode
;
478 bgp_config_unset(bgp
, BGP_CONFIG_CONFEDERATION
);
480 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
481 /* We're looking for peers who's AS is not local */
482 if (peer_sort(peer
) != BGP_PEER_IBGP
) {
483 peer
->local_as
= bgp
->as
;
484 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
485 peer
->last_reset
= PEER_DOWN_CONFED_ID_CHANGE
;
486 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
487 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
491 bgp_session_reset_safe(peer
, &nnode
);
497 /* Is an AS part of the confed or not? */
498 bool bgp_confederation_peers_check(struct bgp
*bgp
, as_t as
)
505 for (i
= 0; i
< bgp
->confed_peers_cnt
; i
++)
506 if (bgp
->confed_peers
[i
] == as
)
512 /* Add an AS to the confederation set. */
513 int bgp_confederation_peers_add(struct bgp
*bgp
, as_t as
)
516 struct listnode
*node
, *nnode
;
519 return BGP_ERR_INVALID_BGP
;
522 return BGP_ERR_INVALID_AS
;
524 if (bgp_confederation_peers_check(bgp
, as
))
527 if (bgp
->confed_peers
)
529 XREALLOC(MTYPE_BGP_CONFED_LIST
, bgp
->confed_peers
,
530 (bgp
->confed_peers_cnt
+ 1) * sizeof(as_t
));
533 XMALLOC(MTYPE_BGP_CONFED_LIST
,
534 (bgp
->confed_peers_cnt
+ 1) * sizeof(as_t
));
536 bgp
->confed_peers
[bgp
->confed_peers_cnt
] = as
;
537 bgp
->confed_peers_cnt
++;
539 if (bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
)) {
540 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
541 if (peer
->as
== as
) {
542 peer
->local_as
= bgp
->as
;
543 if (BGP_IS_VALID_STATE_FOR_NOTIF(
546 PEER_DOWN_CONFED_PEER_CHANGE
;
548 peer
, BGP_NOTIFY_CEASE
,
549 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
551 bgp_session_reset_safe(peer
, &nnode
);
558 /* Delete an AS from the confederation set. */
559 int bgp_confederation_peers_remove(struct bgp
*bgp
, as_t as
)
564 struct listnode
*node
, *nnode
;
569 if (!bgp_confederation_peers_check(bgp
, as
))
572 for (i
= 0; i
< bgp
->confed_peers_cnt
; i
++)
573 if (bgp
->confed_peers
[i
] == as
)
574 for (j
= i
+ 1; j
< bgp
->confed_peers_cnt
; j
++)
575 bgp
->confed_peers
[j
- 1] = bgp
->confed_peers
[j
];
577 bgp
->confed_peers_cnt
--;
579 if (bgp
->confed_peers_cnt
== 0) {
580 if (bgp
->confed_peers
)
581 XFREE(MTYPE_BGP_CONFED_LIST
, bgp
->confed_peers
);
582 bgp
->confed_peers
= NULL
;
585 XREALLOC(MTYPE_BGP_CONFED_LIST
, bgp
->confed_peers
,
586 bgp
->confed_peers_cnt
* sizeof(as_t
));
588 /* Now reset any peer who's remote AS has just been removed from the
590 if (bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
)) {
591 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
592 if (peer
->as
== as
) {
593 peer
->local_as
= bgp
->confed_id
;
594 if (BGP_IS_VALID_STATE_FOR_NOTIF(
597 PEER_DOWN_CONFED_PEER_CHANGE
;
599 peer
, BGP_NOTIFY_CEASE
,
600 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
602 bgp_session_reset_safe(peer
, &nnode
);
610 /* Local preference configuration. */
611 int bgp_default_local_preference_set(struct bgp
*bgp
, uint32_t local_pref
)
616 bgp
->default_local_pref
= local_pref
;
621 int bgp_default_local_preference_unset(struct bgp
*bgp
)
626 bgp
->default_local_pref
= BGP_DEFAULT_LOCAL_PREF
;
631 /* Local preference configuration. */
632 int bgp_default_subgroup_pkt_queue_max_set(struct bgp
*bgp
, uint32_t queue_size
)
637 bgp
->default_subgroup_pkt_queue_max
= queue_size
;
642 int bgp_default_subgroup_pkt_queue_max_unset(struct bgp
*bgp
)
646 bgp
->default_subgroup_pkt_queue_max
=
647 BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX
;
652 /* Listen limit configuration. */
653 int bgp_listen_limit_set(struct bgp
*bgp
, int listen_limit
)
658 bgp
->dynamic_neighbors_limit
= listen_limit
;
663 int bgp_listen_limit_unset(struct bgp
*bgp
)
668 bgp
->dynamic_neighbors_limit
= BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT
;
673 int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi
, iana_safi_t pkt_safi
,
674 afi_t
*afi
, safi_t
*safi
)
676 /* Map from IANA values to internal values, return error if
677 * values are unrecognized.
679 *afi
= afi_iana2int(pkt_afi
);
680 *safi
= safi_iana2int(pkt_safi
);
681 if (*afi
== AFI_MAX
|| *safi
== SAFI_MAX
)
687 int bgp_map_afi_safi_int2iana(afi_t afi
, safi_t safi
, iana_afi_t
*pkt_afi
,
688 iana_safi_t
*pkt_safi
)
690 /* Map from internal values to IANA values, return error if
691 * internal values are bad (unexpected).
693 if (afi
== AFI_MAX
|| safi
== SAFI_MAX
)
695 *pkt_afi
= afi_int2iana(afi
);
696 *pkt_safi
= safi_int2iana(safi
);
700 struct peer_af
*peer_af_create(struct peer
*peer
, afi_t afi
, safi_t safi
)
709 afid
= afindex(afi
, safi
);
710 if (afid
>= BGP_AF_MAX
)
714 assert(peer
->peer_af_array
[afid
] == NULL
);
716 /* Allocate new peer af */
717 af
= XCALLOC(MTYPE_BGP_PEER_AF
, sizeof(struct peer_af
));
719 peer
->peer_af_array
[afid
] = af
;
724 bgp
->af_peer_count
[afi
][safi
]++;
729 struct peer_af
*peer_af_find(struct peer
*peer
, afi_t afi
, safi_t safi
)
736 afid
= afindex(afi
, safi
);
737 if (afid
>= BGP_AF_MAX
)
740 return peer
->peer_af_array
[afid
];
743 int peer_af_delete(struct peer
*peer
, afi_t afi
, safi_t safi
)
752 afid
= afindex(afi
, safi
);
753 if (afid
>= BGP_AF_MAX
)
756 af
= peer
->peer_af_array
[afid
];
761 bgp_stop_announce_route_timer(af
);
763 if (PAF_SUBGRP(af
)) {
764 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
765 zlog_debug("u%" PRIu64
":s%" PRIu64
" remove peer %s",
766 af
->subgroup
->update_group
->id
,
767 af
->subgroup
->id
, peer
->host
);
771 update_subgroup_remove_peer(af
->subgroup
, af
);
773 if (bgp
->af_peer_count
[afi
][safi
])
774 bgp
->af_peer_count
[afi
][safi
]--;
776 peer
->peer_af_array
[afid
] = NULL
;
777 XFREE(MTYPE_BGP_PEER_AF
, af
);
781 /* Peer comparison function for sorting. */
782 int peer_cmp(struct peer
*p1
, struct peer
*p2
)
784 if (p1
->group
&& !p2
->group
)
787 if (!p1
->group
&& p2
->group
)
790 if (p1
->group
== p2
->group
) {
791 if (p1
->conf_if
&& !p2
->conf_if
)
794 if (!p1
->conf_if
&& p2
->conf_if
)
797 if (p1
->conf_if
&& p2
->conf_if
)
798 return if_cmp_name_func(p1
->conf_if
, p2
->conf_if
);
800 return strcmp(p1
->group
->name
, p2
->group
->name
);
802 return sockunion_cmp(&p1
->su
, &p2
->su
);
805 static unsigned int peer_hash_key_make(const void *p
)
807 const struct peer
*peer
= p
;
808 return sockunion_hash(&peer
->su
);
811 static bool peer_hash_same(const void *p1
, const void *p2
)
813 const struct peer
*peer1
= p1
;
814 const struct peer
*peer2
= p2
;
815 return (sockunion_same(&peer1
->su
, &peer2
->su
)
816 && CHECK_FLAG(peer1
->flags
, PEER_FLAG_CONFIG_NODE
)
817 == CHECK_FLAG(peer2
->flags
, PEER_FLAG_CONFIG_NODE
));
820 void peer_flag_inherit(struct peer
*peer
, uint32_t flag
)
824 /* Skip if peer is not a peer-group member. */
825 if (!peer_group_active(peer
))
828 /* Unset override flag to signal inheritance from peer-group. */
829 UNSET_FLAG(peer
->flags_override
, flag
);
832 * Inherit flag state from peer-group. If the flag of the peer-group is
833 * not being inverted, the peer must inherit the inverse of the current
834 * peer-group flag state.
836 group_val
= CHECK_FLAG(peer
->group
->conf
->flags
, flag
);
837 if (!CHECK_FLAG(peer
->group
->conf
->flags_invert
, flag
)
838 && CHECK_FLAG(peer
->flags_invert
, flag
))
839 COND_FLAG(peer
->flags
, flag
, !group_val
);
841 COND_FLAG(peer
->flags
, flag
, group_val
);
844 int peer_af_flag_check(struct peer
*peer
, afi_t afi
, safi_t safi
, uint32_t flag
)
846 return CHECK_FLAG(peer
->af_flags
[afi
][safi
], flag
);
849 void peer_af_flag_inherit(struct peer
*peer
, afi_t afi
, safi_t safi
,
854 /* Skip if peer is not a peer-group member. */
855 if (!peer_group_active(peer
))
858 /* Unset override flag to signal inheritance from peer-group. */
859 UNSET_FLAG(peer
->af_flags_override
[afi
][safi
], flag
);
862 * Inherit flag state from peer-group. If the flag of the peer-group is
863 * not being inverted, the peer must inherit the inverse of the current
864 * peer-group flag state.
866 group_val
= CHECK_FLAG(peer
->group
->conf
->af_flags
[afi
][safi
], flag
);
867 if (!CHECK_FLAG(peer
->group
->conf
->af_flags_invert
[afi
][safi
], flag
)
868 && CHECK_FLAG(peer
->af_flags_invert
[afi
][safi
], flag
))
869 COND_FLAG(peer
->af_flags
[afi
][safi
], flag
, !group_val
);
871 COND_FLAG(peer
->af_flags
[afi
][safi
], flag
, group_val
);
874 /* Check peer's AS number and determines if this peer is IBGP or EBGP */
875 static inline bgp_peer_sort_t
peer_calc_sort(struct peer
*peer
)
882 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
883 if (peer
->as_type
== AS_INTERNAL
)
884 return BGP_PEER_IBGP
;
886 else if (peer
->as_type
== AS_EXTERNAL
)
887 return BGP_PEER_EBGP
;
889 else if (peer
->as_type
== AS_SPECIFIED
&& peer
->as
) {
891 return (bgp
->as
== peer
->as
? BGP_PEER_IBGP
899 peer1
= listnode_head(peer
->group
->peer
);
904 return BGP_PEER_INTERNAL
;
908 if (bgp
&& CHECK_FLAG(bgp
->config
, BGP_CONFIG_CONFEDERATION
)) {
909 if (peer
->local_as
== 0)
910 return BGP_PEER_INTERNAL
;
912 if (peer
->local_as
== peer
->as
) {
913 if (bgp
->as
== bgp
->confed_id
) {
914 if (peer
->local_as
== bgp
->as
)
915 return BGP_PEER_IBGP
;
917 return BGP_PEER_EBGP
;
919 if (peer
->local_as
== bgp
->confed_id
)
920 return BGP_PEER_EBGP
;
922 return BGP_PEER_IBGP
;
926 if (bgp_confederation_peers_check(bgp
, peer
->as
))
927 return BGP_PEER_CONFED
;
929 return BGP_PEER_EBGP
;
931 if (peer
->as_type
== AS_UNSPECIFIED
) {
932 /* check if in peer-group with AS information */
934 && (peer
->group
->conf
->as_type
!= AS_UNSPECIFIED
)) {
935 if (peer
->group
->conf
->as_type
938 == peer
->group
->conf
->as
)
939 return BGP_PEER_IBGP
;
941 return BGP_PEER_EBGP
;
942 } else if (peer
->group
->conf
->as_type
944 return BGP_PEER_IBGP
;
946 return BGP_PEER_EBGP
;
948 /* no AS information anywhere, let caller know */
949 return BGP_PEER_UNSPECIFIED
;
950 } else if (peer
->as_type
!= AS_SPECIFIED
)
951 return (peer
->as_type
== AS_INTERNAL
? BGP_PEER_IBGP
954 return (peer
->local_as
== 0
956 : peer
->local_as
== peer
->as
? BGP_PEER_IBGP
961 /* Calculate and cache the peer "sort" */
962 bgp_peer_sort_t
peer_sort(struct peer
*peer
)
964 peer
->sort
= peer_calc_sort(peer
);
968 bgp_peer_sort_t
peer_sort_lookup(struct peer
*peer
)
973 static void peer_free(struct peer
*peer
)
978 assert(peer
->status
== Deleted
);
982 /* this /ought/ to have been done already through bgp_stop earlier,
983 * but just to be sure..
987 bgp_writes_off(peer
);
988 assert(!peer
->t_write
);
989 assert(!peer
->t_read
);
990 BGP_EVENT_FLUSH(peer
);
992 pthread_mutex_destroy(&peer
->io_mtx
);
994 /* Free connected nexthop, if present */
995 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
)
996 && !peer_dynamic_neighbor(peer
))
997 bgp_delete_connected_nexthop(family2afi(peer
->su
.sa
.sa_family
),
1000 XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG
, peer
->tx_shutdown_message
);
1002 XFREE(MTYPE_PEER_DESC
, peer
->desc
);
1003 XFREE(MTYPE_BGP_PEER_HOST
, peer
->host
);
1004 XFREE(MTYPE_BGP_PEER_HOST
, peer
->domainname
);
1005 XFREE(MTYPE_BGP_PEER_IFNAME
, peer
->ifname
);
1007 /* Update source configuration. */
1008 if (peer
->update_source
) {
1009 sockunion_free(peer
->update_source
);
1010 peer
->update_source
= NULL
;
1013 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
1015 XFREE(MTYPE_TMP
, peer
->notify
.data
);
1016 memset(&peer
->notify
, 0, sizeof(struct bgp_notify
));
1018 if (peer
->clear_node_queue
)
1019 work_queue_free_and_null(&peer
->clear_node_queue
);
1021 bgp_sync_delete(peer
);
1023 XFREE(MTYPE_PEER_CONF_IF
, peer
->conf_if
);
1025 bfd_info_free(&(peer
->bfd_info
));
1027 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
1028 for (safi
= SAFI_UNICAST
; safi
< SAFI_MAX
; safi
++) {
1029 bgp_addpath_set_peer_type(peer
, afi
, safi
,
1034 bgp_unlock(peer
->bgp
);
1036 memset(peer
, 0, sizeof(struct peer
));
1038 XFREE(MTYPE_BGP_PEER
, peer
);
1041 /* increase reference count on a struct peer */
1042 struct peer
*peer_lock_with_caller(const char *name
, struct peer
*peer
)
1044 assert(peer
&& (peer
->lock
>= 0));
1047 zlog_debug("%s peer_lock %p %d", name
, peer
, peer
->lock
);
1055 /* decrease reference count on a struct peer
1056 * struct peer is freed and NULL returned if last reference
1058 struct peer
*peer_unlock_with_caller(const char *name
, struct peer
*peer
)
1060 assert(peer
&& (peer
->lock
> 0));
1063 zlog_debug("%s peer_unlock %p %d", name
, peer
, peer
->lock
);
1068 if (peer
->lock
== 0) {
1075 /* BGP GR changes */
1077 int bgp_global_gr_init(struct bgp
*bgp
)
1079 if (BGP_DEBUG(graceful_restart
, GRACEFUL_RESTART
))
1080 zlog_debug("%s called ..", __func__
);
1082 int local_GLOBAL_GR_FSM
[BGP_GLOBAL_GR_MODE
][BGP_GLOBAL_GR_EVENT_CMD
] = {
1083 /* GLOBAL_HELPER Mode */
1086 /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/
1087 GLOBAL_GR
, GLOBAL_INVALID
,
1088 /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/
1089 GLOBAL_DISABLE
, GLOBAL_INVALID
1091 /* GLOBAL_GR Mode */
1094 /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/
1095 GLOBAL_INVALID
, GLOBAL_HELPER
,
1096 /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/
1097 GLOBAL_DISABLE
, GLOBAL_INVALID
1099 /* GLOBAL_DISABLE Mode */
1102 /*GLOBAL_GR_cmd */ /*no_Global_GR_cmd*/
1103 GLOBAL_GR
, GLOBAL_INVALID
,
1104 /*GLOBAL_DISABLE_cmd*//*no_Global_Disable_cmd*/
1105 GLOBAL_INVALID
, GLOBAL_HELPER
1107 /* GLOBAL_INVALID Mode */
1110 /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/
1111 GLOBAL_INVALID
, GLOBAL_INVALID
,
1112 /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/
1113 GLOBAL_INVALID
, GLOBAL_INVALID
1116 memcpy(bgp
->GLOBAL_GR_FSM
, local_GLOBAL_GR_FSM
,
1117 sizeof(local_GLOBAL_GR_FSM
));
1119 bgp
->global_gr_present_state
= GLOBAL_HELPER
;
1120 bgp
->present_zebra_gr_state
= ZEBRA_GR_DISABLE
;
1122 return BGP_GR_SUCCESS
;
1125 int bgp_peer_gr_init(struct peer
*peer
)
1127 if (BGP_DEBUG(graceful_restart
, GRACEFUL_RESTART
))
1128 zlog_debug("%s called ..", __func__
);
1130 struct bgp_peer_gr local_Peer_GR_FSM
[BGP_PEER_GR_MODE
]
1131 [BGP_PEER_GR_EVENT_CMD
] = {
1133 /* PEER_HELPER Mode */
1134 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1135 { PEER_GR
, bgp_peer_gr_action
}, {PEER_INVALID
, NULL
},
1136 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1137 {PEER_DISABLE
, bgp_peer_gr_action
}, {PEER_INVALID
, NULL
},
1138 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1139 { PEER_INVALID
, NULL
}, {PEER_GLOBAL_INHERIT
,
1140 bgp_peer_gr_action
}
1144 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1145 { PEER_INVALID
, NULL
}, { PEER_GLOBAL_INHERIT
,
1146 bgp_peer_gr_action
},
1147 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1148 {PEER_DISABLE
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1149 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1150 { PEER_HELPER
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
}
1153 /* PEER_DISABLE Mode */
1154 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1155 { PEER_GR
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1156 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1157 { PEER_INVALID
, NULL
}, { PEER_GLOBAL_INHERIT
,
1158 bgp_peer_gr_action
},
1159 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1160 { PEER_HELPER
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
}
1163 /* PEER_INVALID Mode */
1164 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1165 { PEER_INVALID
, NULL
}, { PEER_INVALID
, NULL
},
1166 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1167 { PEER_INVALID
, NULL
}, { PEER_INVALID
, NULL
},
1168 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1169 { PEER_INVALID
, NULL
}, { PEER_INVALID
, NULL
},
1172 /* PEER_GLOBAL_INHERIT Mode */
1173 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1174 { PEER_GR
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1175 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1176 { PEER_DISABLE
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1177 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1178 { PEER_HELPER
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
}
1181 memcpy(&peer
->PEER_GR_FSM
, local_Peer_GR_FSM
,
1182 sizeof(local_Peer_GR_FSM
));
1183 peer
->peer_gr_present_state
= PEER_GLOBAL_INHERIT
;
1184 bgp_peer_move_to_gr_mode(peer
, PEER_GLOBAL_INHERIT
);
1186 return BGP_GR_SUCCESS
;
1189 /* Allocate new peer object, implicitely locked. */
1190 struct peer
*peer_new(struct bgp
*bgp
)
1197 /* bgp argument is absolutely required */
1200 /* Allocate new peer. */
1201 peer
= XCALLOC(MTYPE_BGP_PEER
, sizeof(struct peer
));
1203 /* Set default value. */
1205 peer
->v_start
= BGP_INIT_START_TIMER
;
1206 peer
->v_connect
= bgp
->default_connect_retry
;
1207 peer
->status
= Idle
;
1208 peer
->ostatus
= Idle
;
1209 peer
->cur_event
= peer
->last_event
= peer
->last_major_event
= 0;
1210 peer
->bgp
= bgp_lock(bgp
);
1211 peer
= peer_lock(peer
); /* initial reference */
1212 peer
->password
= NULL
;
1214 /* Set default flags. */
1215 FOREACH_AFI_SAFI (afi
, safi
) {
1216 SET_FLAG(peer
->af_flags
[afi
][safi
], PEER_FLAG_SEND_COMMUNITY
);
1217 SET_FLAG(peer
->af_flags
[afi
][safi
],
1218 PEER_FLAG_SEND_EXT_COMMUNITY
);
1219 SET_FLAG(peer
->af_flags
[afi
][safi
],
1220 PEER_FLAG_SEND_LARGE_COMMUNITY
);
1222 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
1223 PEER_FLAG_SEND_COMMUNITY
);
1224 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
1225 PEER_FLAG_SEND_EXT_COMMUNITY
);
1226 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
1227 PEER_FLAG_SEND_LARGE_COMMUNITY
);
1228 peer
->addpath_type
[afi
][safi
] = BGP_ADDPATH_NONE
;
1231 /* set nexthop-unchanged for l2vpn evpn by default */
1232 SET_FLAG(peer
->af_flags
[AFI_L2VPN
][SAFI_EVPN
],
1233 PEER_FLAG_NEXTHOP_UNCHANGED
);
1235 SET_FLAG(peer
->sflags
, PEER_STATUS_CAPABILITY_OPEN
);
1237 /* Initialize per peer bgp GR FSM */
1238 bgp_peer_gr_init(peer
);
1240 /* Create buffers. */
1241 peer
->ibuf
= stream_fifo_new();
1242 peer
->obuf
= stream_fifo_new();
1243 pthread_mutex_init(&peer
->io_mtx
, NULL
);
1245 /* We use a larger buffer for peer->obuf_work in the event that:
1246 * - We RX a BGP_UPDATE where the attributes alone are just
1247 * under BGP_MAX_PACKET_SIZE
1248 * - The user configures an outbound route-map that does many as-path
1249 * prepends or adds many communities. At most they can have
1250 * CMD_ARGC_MAX args in a route-map so there is a finite limit on how
1251 * large they can make the attributes.
1253 * Having a buffer with BGP_MAX_PACKET_SIZE_OVERFLOW allows us to avoid
1254 * bounds checking for every single attribute as we construct an
1258 stream_new(BGP_MAX_PACKET_SIZE
+ BGP_MAX_PACKET_SIZE_OVERFLOW
);
1260 ringbuf_new(BGP_MAX_PACKET_SIZE
* BGP_READ_PACKET_MAX
);
1262 peer
->scratch
= stream_new(BGP_MAX_PACKET_SIZE
);
1264 bgp_sync_init(peer
);
1266 /* Get service port number. */
1267 sp
= getservbyname("bgp", "tcp");
1268 peer
->port
= (sp
== NULL
) ? BGP_PORT_DEFAULT
: ntohs(sp
->s_port
);
1270 QOBJ_REG(peer
, peer
);
1275 * This function is invoked when a duplicate peer structure associated with
1276 * a neighbor is being deleted. If this about-to-be-deleted structure is
1277 * the one with all the config, then we have to copy over the info.
1279 void peer_xfer_config(struct peer
*peer_dst
, struct peer
*peer_src
)
1281 struct peer_af
*paf
;
1289 /* The following function is used by both peer group config copy to
1290 * individual peer and when we transfer config
1292 if (peer_src
->change_local_as
)
1293 peer_dst
->change_local_as
= peer_src
->change_local_as
;
1295 /* peer flags apply */
1296 peer_dst
->flags
= peer_src
->flags
;
1297 peer_dst
->cap
= peer_src
->cap
;
1299 peer_dst
->peer_gr_present_state
= peer_src
->peer_gr_present_state
;
1300 peer_dst
->peer_gr_new_status_flag
= peer_src
->peer_gr_new_status_flag
;
1302 peer_dst
->local_as
= peer_src
->local_as
;
1303 peer_dst
->port
= peer_src
->port
;
1304 (void)peer_sort(peer_dst
);
1305 peer_dst
->rmap_type
= peer_src
->rmap_type
;
1308 peer_dst
->holdtime
= peer_src
->holdtime
;
1309 peer_dst
->keepalive
= peer_src
->keepalive
;
1310 peer_dst
->connect
= peer_src
->connect
;
1311 peer_dst
->v_holdtime
= peer_src
->v_holdtime
;
1312 peer_dst
->v_keepalive
= peer_src
->v_keepalive
;
1313 peer_dst
->routeadv
= peer_src
->routeadv
;
1314 peer_dst
->v_routeadv
= peer_src
->v_routeadv
;
1316 /* password apply */
1317 if (peer_src
->password
&& !peer_dst
->password
)
1318 peer_dst
->password
=
1319 XSTRDUP(MTYPE_PEER_PASSWORD
, peer_src
->password
);
1321 FOREACH_AFI_SAFI (afi
, safi
) {
1322 peer_dst
->afc
[afi
][safi
] = peer_src
->afc
[afi
][safi
];
1323 peer_dst
->af_flags
[afi
][safi
] = peer_src
->af_flags
[afi
][safi
];
1324 peer_dst
->allowas_in
[afi
][safi
] =
1325 peer_src
->allowas_in
[afi
][safi
];
1326 peer_dst
->weight
[afi
][safi
] = peer_src
->weight
[afi
][safi
];
1327 peer_dst
->addpath_type
[afi
][safi
] =
1328 peer_src
->addpath_type
[afi
][safi
];
1331 for (afidx
= BGP_AF_START
; afidx
< BGP_AF_MAX
; afidx
++) {
1332 paf
= peer_src
->peer_af_array
[afidx
];
1334 peer_af_create(peer_dst
, paf
->afi
, paf
->safi
);
1337 /* update-source apply */
1338 if (peer_src
->update_source
) {
1339 if (peer_dst
->update_source
)
1340 sockunion_free(peer_dst
->update_source
);
1341 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer_dst
->update_if
);
1342 peer_dst
->update_source
=
1343 sockunion_dup(peer_src
->update_source
);
1344 } else if (peer_src
->update_if
) {
1345 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer_dst
->update_if
);
1346 if (peer_dst
->update_source
) {
1347 sockunion_free(peer_dst
->update_source
);
1348 peer_dst
->update_source
= NULL
;
1350 peer_dst
->update_if
=
1351 XSTRDUP(MTYPE_PEER_UPDATE_SOURCE
, peer_src
->update_if
);
1354 if (peer_src
->ifname
) {
1355 XFREE(MTYPE_BGP_PEER_IFNAME
, peer_dst
->ifname
);
1358 XSTRDUP(MTYPE_BGP_PEER_IFNAME
, peer_src
->ifname
);
1362 static int bgp_peer_conf_if_to_su_update_v4(struct peer
*peer
,
1363 struct interface
*ifp
)
1365 struct connected
*ifc
;
1368 struct listnode
*node
;
1370 /* If our IPv4 address on the interface is /30 or /31, we can derive the
1371 * IPv4 address of the other end.
1373 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, ifc
)) {
1374 if (ifc
->address
&& (ifc
->address
->family
== AF_INET
)) {
1375 PREFIX_COPY_IPV4(&p
, CONNECTED_PREFIX(ifc
));
1376 if (p
.prefixlen
== 30) {
1377 peer
->su
.sa
.sa_family
= AF_INET
;
1378 addr
= ntohl(p
.u
.prefix4
.s_addr
);
1380 peer
->su
.sin
.sin_addr
.s_addr
=
1382 else if (addr
% 4 == 2)
1383 peer
->su
.sin
.sin_addr
.s_addr
=
1385 #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
1386 peer
->su
.sin
.sin_len
=
1387 sizeof(struct sockaddr_in
);
1388 #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
1390 } else if (p
.prefixlen
== 31) {
1391 peer
->su
.sa
.sa_family
= AF_INET
;
1392 addr
= ntohl(p
.u
.prefix4
.s_addr
);
1394 peer
->su
.sin
.sin_addr
.s_addr
=
1397 peer
->su
.sin
.sin_addr
.s_addr
=
1399 #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
1400 peer
->su
.sin
.sin_len
=
1401 sizeof(struct sockaddr_in
);
1402 #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
1404 } else if (bgp_debug_neighbor_events(peer
))
1406 "%s: IPv4 interface address is not /30 or /31, v4 session not started",
1414 static bool bgp_peer_conf_if_to_su_update_v6(struct peer
*peer
,
1415 struct interface
*ifp
)
1417 struct nbr_connected
*ifc_nbr
;
1419 /* Have we learnt the peer's IPv6 link-local address? */
1420 if (ifp
->nbr_connected
1421 && (ifc_nbr
= listnode_head(ifp
->nbr_connected
))) {
1422 peer
->su
.sa
.sa_family
= AF_INET6
;
1423 memcpy(&peer
->su
.sin6
.sin6_addr
, &ifc_nbr
->address
->u
.prefix
,
1424 sizeof(struct in6_addr
));
1426 peer
->su
.sin6
.sin6_len
= sizeof(struct sockaddr_in6
);
1428 peer
->su
.sin6
.sin6_scope_id
= ifp
->ifindex
;
1436 * Set or reset the peer address socketunion structure based on the
1437 * learnt/derived peer address. If the address has changed, update the
1438 * password on the listen socket, if needed.
1440 void bgp_peer_conf_if_to_su_update(struct peer
*peer
)
1442 struct interface
*ifp
;
1444 int peer_addr_updated
= 0;
1450 * Our peer structure is stored in the bgp->peerhash
1451 * release it before we modify anything.
1453 hash_release(peer
->bgp
->peerhash
, peer
);
1455 prev_family
= peer
->su
.sa
.sa_family
;
1456 if ((ifp
= if_lookup_by_name(peer
->conf_if
, peer
->bgp
->vrf_id
))) {
1458 /* If BGP unnumbered is not "v6only", we first see if we can
1460 * peer's IPv4 address.
1462 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_IFPEER_V6ONLY
))
1464 bgp_peer_conf_if_to_su_update_v4(peer
, ifp
);
1466 /* If "v6only" or we can't derive peer's IPv4 address, see if
1468 * learnt the peer's IPv6 link-local address. This is from the
1470 * IPv6 address in router advertisement.
1472 if (!peer_addr_updated
)
1474 bgp_peer_conf_if_to_su_update_v6(peer
, ifp
);
1476 /* If we could derive the peer address, we may need to install the
1478 * configured for the peer, if any, on the listen socket. Otherwise,
1480 * that peer's address is not available and uninstall the password, if
1483 if (peer_addr_updated
) {
1484 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
)
1485 && prev_family
== AF_UNSPEC
)
1488 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
)
1489 && prev_family
!= AF_UNSPEC
)
1490 bgp_md5_unset(peer
);
1491 peer
->su
.sa
.sa_family
= AF_UNSPEC
;
1492 memset(&peer
->su
.sin6
.sin6_addr
, 0, sizeof(struct in6_addr
));
1496 * Since our su changed we need to del/add peer to the peerhash
1498 hash_get(peer
->bgp
->peerhash
, peer
, hash_alloc_intern
);
1501 static void bgp_recalculate_afi_safi_bestpaths(struct bgp
*bgp
, afi_t afi
,
1504 struct bgp_dest
*dest
, *ndest
;
1505 struct bgp_table
*table
;
1507 for (dest
= bgp_table_top(bgp
->rib
[afi
][safi
]); dest
;
1508 dest
= bgp_route_next(dest
)) {
1509 table
= bgp_dest_get_bgp_table_info(dest
);
1510 if (table
!= NULL
) {
1511 /* Special handling for 2-level routing
1513 if (safi
== SAFI_MPLS_VPN
|| safi
== SAFI_ENCAP
1514 || safi
== SAFI_EVPN
) {
1515 for (ndest
= bgp_table_top(table
); ndest
;
1516 ndest
= bgp_route_next(ndest
))
1517 bgp_process(bgp
, ndest
, afi
, safi
);
1519 bgp_process(bgp
, dest
, afi
, safi
);
1524 /* Force a bestpath recalculation for all prefixes. This is used
1525 * when 'bgp bestpath' commands are entered.
1527 void bgp_recalculate_all_bestpaths(struct bgp
*bgp
)
1532 FOREACH_AFI_SAFI (afi
, safi
) {
1533 bgp_recalculate_afi_safi_bestpaths(bgp
, afi
, safi
);
1538 * Create new BGP peer.
1540 * conf_if and su are mutually exclusive if configuring from the cli.
1541 * If we are handing a doppelganger, then we *must* pass in both
1542 * the original peer's su and conf_if, so that we can appropriately
1543 * track the bgp->peerhash( ie we don't want to remove the current
1544 * one from the config ).
1546 struct peer
*peer_create(union sockunion
*su
, const char *conf_if
,
1547 struct bgp
*bgp
, as_t local_as
, as_t remote_as
,
1548 int as_type
, afi_t afi
, safi_t safi
,
1549 struct peer_group
*group
)
1553 char buf
[SU_ADDRSTRLEN
];
1555 peer
= peer_new(bgp
);
1557 peer
->conf_if
= XSTRDUP(MTYPE_PEER_CONF_IF
, conf_if
);
1561 bgp_peer_conf_if_to_su_update(peer
);
1562 XFREE(MTYPE_BGP_PEER_HOST
, peer
->host
);
1563 peer
->host
= XSTRDUP(MTYPE_BGP_PEER_HOST
, conf_if
);
1566 sockunion2str(su
, buf
, SU_ADDRSTRLEN
);
1567 XFREE(MTYPE_BGP_PEER_HOST
, peer
->host
);
1568 peer
->host
= XSTRDUP(MTYPE_BGP_PEER_HOST
, buf
);
1570 peer
->local_as
= local_as
;
1571 peer
->as
= remote_as
;
1572 peer
->as_type
= as_type
;
1573 peer
->local_id
= bgp
->router_id
;
1574 peer
->v_holdtime
= bgp
->default_holdtime
;
1575 peer
->v_keepalive
= bgp
->default_keepalive
;
1576 peer
->v_routeadv
= (peer_sort(peer
) == BGP_PEER_IBGP
)
1577 ? BGP_DEFAULT_IBGP_ROUTEADV
1578 : BGP_DEFAULT_EBGP_ROUTEADV
;
1580 peer
= peer_lock(peer
); /* bgp peer list reference */
1581 peer
->group
= group
;
1582 listnode_add_sort(bgp
->peer
, peer
);
1583 hash_get(bgp
->peerhash
, peer
, hash_alloc_intern
);
1585 /* Adjust update-group coalesce timer heuristics for # peers. */
1586 if (bgp
->heuristic_coalesce
) {
1587 long ct
= BGP_DEFAULT_SUBGROUP_COALESCE_TIME
1589 * BGP_PEER_ADJUST_SUBGROUP_COALESCE_TIME
);
1590 bgp
->coalesce_time
= MIN(BGP_MAX_SUBGROUP_COALESCE_TIME
, ct
);
1593 active
= peer_active(peer
);
1595 if (peer
->su
.sa
.sa_family
== AF_UNSPEC
)
1596 peer
->last_reset
= PEER_DOWN_NBR_ADDR
;
1598 peer
->last_reset
= PEER_DOWN_NOAFI_ACTIVATED
;
1601 /* Last read and reset time set */
1602 peer
->readtime
= peer
->resettime
= bgp_clock();
1604 /* Default TTL set. */
1605 peer
->ttl
= (peer
->sort
== BGP_PEER_IBGP
) ? MAXTTL
: BGP_DEFAULT_TTL
;
1607 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
1610 peer
->afc
[afi
][safi
] = 1;
1611 peer_af_create(peer
, afi
, safi
);
1614 /* auto shutdown if configured */
1615 if (bgp
->autoshutdown
)
1616 peer_flag_set(peer
, PEER_FLAG_SHUTDOWN
);
1617 /* Set up peer's events and timers. */
1618 else if (!active
&& peer_active(peer
))
1619 bgp_timer_set(peer
);
1621 bgp_peer_gr_flags_update(peer
);
1622 BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp
, bgp
->peer
);
1627 /* Make accept BGP peer. This function is only called from the test code */
1628 struct peer
*peer_create_accept(struct bgp
*bgp
)
1632 peer
= peer_new(bgp
);
1634 peer
= peer_lock(peer
); /* bgp peer list reference */
1635 listnode_add_sort(bgp
->peer
, peer
);
1641 * Return true if we have a peer configured to use this afi/safi
1643 int bgp_afi_safi_peer_exists(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1645 struct listnode
*node
;
1648 for (ALL_LIST_ELEMENTS_RO(bgp
->peer
, node
, peer
)) {
1649 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
))
1652 if (peer
->afc
[afi
][safi
])
1659 /* Change peer's AS number. */
1660 void peer_as_change(struct peer
*peer
, as_t as
, int as_specified
)
1662 bgp_peer_sort_t origtype
, newtype
;
1665 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
1666 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
1667 peer
->last_reset
= PEER_DOWN_REMOTE_AS_CHANGE
;
1668 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
1669 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
1671 bgp_session_reset(peer
);
1673 origtype
= peer_sort_lookup(peer
);
1675 peer
->as_type
= as_specified
;
1677 if (bgp_config_check(peer
->bgp
, BGP_CONFIG_CONFEDERATION
)
1678 && !bgp_confederation_peers_check(peer
->bgp
, as
)
1679 && peer
->bgp
->as
!= as
)
1680 peer
->local_as
= peer
->bgp
->confed_id
;
1682 peer
->local_as
= peer
->bgp
->as
;
1684 newtype
= peer_sort(peer
);
1685 /* Advertisement-interval reset */
1686 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_ROUTEADV
)) {
1687 peer
->v_routeadv
= (newtype
== BGP_PEER_IBGP
)
1688 ? BGP_DEFAULT_IBGP_ROUTEADV
1689 : BGP_DEFAULT_EBGP_ROUTEADV
;
1693 if (newtype
== BGP_PEER_IBGP
)
1695 else if (origtype
== BGP_PEER_IBGP
)
1696 peer
->ttl
= BGP_DEFAULT_TTL
;
1698 /* reflector-client reset */
1699 if (newtype
!= BGP_PEER_IBGP
) {
1700 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_UNICAST
],
1701 PEER_FLAG_REFLECTOR_CLIENT
);
1702 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_MULTICAST
],
1703 PEER_FLAG_REFLECTOR_CLIENT
);
1704 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_LABELED_UNICAST
],
1705 PEER_FLAG_REFLECTOR_CLIENT
);
1706 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_MPLS_VPN
],
1707 PEER_FLAG_REFLECTOR_CLIENT
);
1708 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_ENCAP
],
1709 PEER_FLAG_REFLECTOR_CLIENT
);
1710 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_FLOWSPEC
],
1711 PEER_FLAG_REFLECTOR_CLIENT
);
1712 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_UNICAST
],
1713 PEER_FLAG_REFLECTOR_CLIENT
);
1714 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_MULTICAST
],
1715 PEER_FLAG_REFLECTOR_CLIENT
);
1716 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_LABELED_UNICAST
],
1717 PEER_FLAG_REFLECTOR_CLIENT
);
1718 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_MPLS_VPN
],
1719 PEER_FLAG_REFLECTOR_CLIENT
);
1720 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_ENCAP
],
1721 PEER_FLAG_REFLECTOR_CLIENT
);
1722 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_FLOWSPEC
],
1723 PEER_FLAG_REFLECTOR_CLIENT
);
1724 UNSET_FLAG(peer
->af_flags
[AFI_L2VPN
][SAFI_EVPN
],
1725 PEER_FLAG_REFLECTOR_CLIENT
);
1728 /* local-as reset */
1729 if (newtype
!= BGP_PEER_EBGP
) {
1730 peer
->change_local_as
= 0;
1731 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS
);
1732 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
1733 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
1737 /* If peer does not exist, create new one. If peer already exists,
1738 set AS number to the peer. */
1739 int peer_remote_as(struct bgp
*bgp
, union sockunion
*su
, const char *conf_if
,
1740 as_t
*as
, int as_type
, afi_t afi
, safi_t safi
)
1746 peer
= peer_lookup_by_conf_if(bgp
, conf_if
);
1748 peer
= peer_lookup(bgp
, su
);
1751 /* Not allowed for a dynamic peer. */
1752 if (peer_dynamic_neighbor(peer
)) {
1754 return BGP_ERR_INVALID_FOR_DYNAMIC_PEER
;
1757 /* When this peer is a member of peer-group. */
1759 /* peer-group already has AS number/internal/external */
1760 if (peer
->group
->conf
->as
1761 || peer
->group
->conf
->as_type
) {
1762 /* Return peer group's AS number. */
1763 *as
= peer
->group
->conf
->as
;
1764 return BGP_ERR_PEER_GROUP_MEMBER
;
1767 bgp_peer_sort_t peer_sort_type
=
1768 peer_sort(peer
->group
->conf
);
1770 /* Explicit AS numbers used, compare AS numbers */
1771 if (as_type
== AS_SPECIFIED
) {
1772 if (((peer_sort_type
== BGP_PEER_IBGP
)
1773 && (bgp
->as
!= *as
))
1774 || ((peer_sort_type
== BGP_PEER_EBGP
)
1775 && (bgp
->as
== *as
))) {
1777 return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT
;
1780 /* internal/external used, compare as-types */
1781 if (((peer_sort_type
== BGP_PEER_IBGP
)
1782 && (as_type
!= AS_INTERNAL
))
1783 || ((peer_sort_type
== BGP_PEER_EBGP
)
1784 && (as_type
!= AS_EXTERNAL
))) {
1786 return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT
;
1791 /* Existing peer's AS number change. */
1792 if (((peer
->as_type
== AS_SPECIFIED
) && peer
->as
!= *as
)
1793 || (peer
->as_type
!= as_type
))
1794 peer_as_change(peer
, *as
, as_type
);
1797 return BGP_ERR_NO_INTERFACE_CONFIG
;
1799 /* If the peer is not part of our confederation, and its not an
1800 iBGP peer then spoof the source AS */
1801 if (bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
)
1802 && !bgp_confederation_peers_check(bgp
, *as
)
1804 local_as
= bgp
->confed_id
;
1808 /* If this is IPv4 unicast configuration and "no bgp default
1809 ipv4-unicast" is specified. */
1811 if (CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_DEFAULT_IPV4
)
1812 && afi
== AFI_IP
&& safi
== SAFI_UNICAST
)
1813 peer_create(su
, conf_if
, bgp
, local_as
, *as
, as_type
, 0,
1816 peer_create(su
, conf_if
, bgp
, local_as
, *as
, as_type
,
1823 static void peer_group2peer_config_copy_af(struct peer_group
*group
,
1824 struct peer
*peer
, afi_t afi
,
1828 int out
= FILTER_OUT
;
1830 uint32_t pflags_ovrd
;
1831 uint8_t *pfilter_ovrd
;
1835 pflags_ovrd
= peer
->af_flags_override
[afi
][safi
];
1836 pfilter_ovrd
= &peer
->filter_override
[afi
][safi
][in
];
1838 /* peer af_flags apply */
1839 flags_tmp
= conf
->af_flags
[afi
][safi
] & ~pflags_ovrd
;
1840 flags_tmp
^= conf
->af_flags_invert
[afi
][safi
]
1841 ^ peer
->af_flags_invert
[afi
][safi
];
1842 flags_tmp
&= ~pflags_ovrd
;
1844 UNSET_FLAG(peer
->af_flags
[afi
][safi
], ~pflags_ovrd
);
1845 SET_FLAG(peer
->af_flags
[afi
][safi
], flags_tmp
);
1846 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
1847 conf
->af_flags_invert
[afi
][safi
]);
1849 /* maximum-prefix */
1850 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_MAX_PREFIX
)) {
1851 PEER_ATTR_INHERIT(peer
, group
, pmax
[afi
][safi
]);
1852 PEER_ATTR_INHERIT(peer
, group
, pmax_threshold
[afi
][safi
]);
1853 PEER_ATTR_INHERIT(peer
, group
, pmax_restart
[afi
][safi
]);
1857 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_ALLOWAS_IN
))
1858 PEER_ATTR_INHERIT(peer
, group
, allowas_in
[afi
][safi
]);
1861 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_WEIGHT
))
1862 PEER_ATTR_INHERIT(peer
, group
, weight
[afi
][safi
]);
1864 /* default-originate route-map */
1865 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_DEFAULT_ORIGINATE
)) {
1866 PEER_STR_ATTR_INHERIT(peer
, group
, default_rmap
[afi
][safi
].name
,
1867 MTYPE_ROUTE_MAP_NAME
);
1868 PEER_ATTR_INHERIT(peer
, group
, default_rmap
[afi
][safi
].map
);
1871 /* inbound filter apply */
1872 if (!CHECK_FLAG(pfilter_ovrd
[in
], PEER_FT_DISTRIBUTE_LIST
)) {
1873 PEER_STR_ATTR_INHERIT(peer
, group
,
1874 filter
[afi
][safi
].dlist
[in
].name
,
1875 MTYPE_BGP_FILTER_NAME
);
1876 PEER_ATTR_INHERIT(peer
, group
,
1877 filter
[afi
][safi
].dlist
[in
].alist
);
1880 if (!CHECK_FLAG(pfilter_ovrd
[in
], PEER_FT_PREFIX_LIST
)) {
1881 PEER_STR_ATTR_INHERIT(peer
, group
,
1882 filter
[afi
][safi
].plist
[in
].name
,
1883 MTYPE_BGP_FILTER_NAME
);
1884 PEER_ATTR_INHERIT(peer
, group
,
1885 filter
[afi
][safi
].plist
[in
].plist
);
1888 if (!CHECK_FLAG(pfilter_ovrd
[in
], PEER_FT_FILTER_LIST
)) {
1889 PEER_STR_ATTR_INHERIT(peer
, group
,
1890 filter
[afi
][safi
].aslist
[in
].name
,
1891 MTYPE_BGP_FILTER_NAME
);
1892 PEER_ATTR_INHERIT(peer
, group
,
1893 filter
[afi
][safi
].aslist
[in
].aslist
);
1896 if (!CHECK_FLAG(pfilter_ovrd
[RMAP_IN
], PEER_FT_ROUTE_MAP
)) {
1897 PEER_STR_ATTR_INHERIT(peer
, group
,
1898 filter
[afi
][safi
].map
[in
].name
,
1899 MTYPE_BGP_FILTER_NAME
);
1900 PEER_ATTR_INHERIT(peer
, group
,
1901 filter
[afi
][safi
].map
[RMAP_IN
].map
);
1904 /* outbound filter apply */
1905 if (!CHECK_FLAG(pfilter_ovrd
[out
], PEER_FT_DISTRIBUTE_LIST
)) {
1906 PEER_STR_ATTR_INHERIT(peer
, group
,
1907 filter
[afi
][safi
].dlist
[out
].name
,
1908 MTYPE_BGP_FILTER_NAME
);
1909 PEER_ATTR_INHERIT(peer
, group
,
1910 filter
[afi
][safi
].dlist
[out
].alist
);
1913 if (!CHECK_FLAG(pfilter_ovrd
[out
], PEER_FT_PREFIX_LIST
)) {
1914 PEER_STR_ATTR_INHERIT(peer
, group
,
1915 filter
[afi
][safi
].plist
[out
].name
,
1916 MTYPE_BGP_FILTER_NAME
);
1917 PEER_ATTR_INHERIT(peer
, group
,
1918 filter
[afi
][safi
].plist
[out
].plist
);
1921 if (!CHECK_FLAG(pfilter_ovrd
[out
], PEER_FT_FILTER_LIST
)) {
1922 PEER_STR_ATTR_INHERIT(peer
, group
,
1923 filter
[afi
][safi
].aslist
[out
].name
,
1924 MTYPE_BGP_FILTER_NAME
);
1925 PEER_ATTR_INHERIT(peer
, group
,
1926 filter
[afi
][safi
].aslist
[out
].aslist
);
1929 if (!CHECK_FLAG(pfilter_ovrd
[RMAP_OUT
], PEER_FT_ROUTE_MAP
)) {
1930 PEER_STR_ATTR_INHERIT(peer
, group
,
1931 filter
[afi
][safi
].map
[RMAP_OUT
].name
,
1932 MTYPE_BGP_FILTER_NAME
);
1933 PEER_ATTR_INHERIT(peer
, group
,
1934 filter
[afi
][safi
].map
[RMAP_OUT
].map
);
1937 /* nondirectional filter apply */
1938 if (!CHECK_FLAG(pfilter_ovrd
[0], PEER_FT_UNSUPPRESS_MAP
)) {
1939 PEER_STR_ATTR_INHERIT(peer
, group
, filter
[afi
][safi
].usmap
.name
,
1940 MTYPE_BGP_FILTER_NAME
);
1941 PEER_ATTR_INHERIT(peer
, group
, filter
[afi
][safi
].usmap
.map
);
1944 if (peer
->addpath_type
[afi
][safi
] == BGP_ADDPATH_NONE
) {
1945 peer
->addpath_type
[afi
][safi
] = conf
->addpath_type
[afi
][safi
];
1946 bgp_addpath_type_changed(conf
->bgp
);
1950 static int peer_activate_af(struct peer
*peer
, afi_t afi
, safi_t safi
)
1955 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
1956 flog_err(EC_BGP_PEER_GROUP
, "%s was called for peer-group %s",
1957 __func__
, peer
->host
);
1961 /* Do not activate a peer for both SAFI_UNICAST and SAFI_LABELED_UNICAST
1963 if ((safi
== SAFI_UNICAST
&& peer
->afc
[afi
][SAFI_LABELED_UNICAST
])
1964 || (safi
== SAFI_LABELED_UNICAST
&& peer
->afc
[afi
][SAFI_UNICAST
]))
1965 return BGP_ERR_PEER_SAFI_CONFLICT
;
1967 /* Nothing to do if we've already activated this peer */
1968 if (peer
->afc
[afi
][safi
])
1971 if (peer_af_create(peer
, afi
, safi
) == NULL
)
1974 active
= peer_active(peer
);
1975 peer
->afc
[afi
][safi
] = 1;
1978 peer_group2peer_config_copy_af(peer
->group
, peer
, afi
, safi
);
1980 if (!active
&& peer_active(peer
)) {
1981 bgp_timer_set(peer
);
1983 if (peer
->status
== Established
) {
1984 if (CHECK_FLAG(peer
->cap
, PEER_CAP_DYNAMIC_RCV
)) {
1985 peer
->afc_adv
[afi
][safi
] = 1;
1986 bgp_capability_send(peer
, afi
, safi
,
1988 CAPABILITY_ACTION_SET
);
1989 if (peer
->afc_recv
[afi
][safi
]) {
1990 peer
->afc_nego
[afi
][safi
] = 1;
1991 bgp_announce_route(peer
, afi
, safi
);
1994 peer
->last_reset
= PEER_DOWN_AF_ACTIVATE
;
1995 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
1996 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
1999 if (peer
->status
== OpenSent
|| peer
->status
== OpenConfirm
) {
2000 peer
->last_reset
= PEER_DOWN_AF_ACTIVATE
;
2001 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2002 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2005 * If we are turning on a AFI/SAFI locally and we've
2006 * started bringing a peer up, we need to tell
2007 * the other peer to restart because we might loose
2008 * configuration here because when the doppelganger
2009 * gets to a established state due to how
2010 * we resolve we could just overwrite the afi/safi
2013 other
= peer
->doppelganger
;
2015 && (other
->status
== OpenSent
2016 || other
->status
== OpenConfirm
)) {
2017 other
->last_reset
= PEER_DOWN_AF_ACTIVATE
;
2018 bgp_notify_send(other
, BGP_NOTIFY_CEASE
,
2019 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2026 /* Activate the peer or peer group for specified AFI and SAFI. */
2027 int peer_activate(struct peer
*peer
, afi_t afi
, safi_t safi
)
2030 struct peer_group
*group
;
2031 struct listnode
*node
, *nnode
;
2032 struct peer
*tmp_peer
;
2035 /* Nothing to do if we've already activated this peer */
2036 if (peer
->afc
[afi
][safi
])
2041 /* This is a peer-group so activate all of the members of the
2042 * peer-group as well */
2043 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2045 /* Do not activate a peer for both SAFI_UNICAST and
2046 * SAFI_LABELED_UNICAST */
2047 if ((safi
== SAFI_UNICAST
2048 && peer
->afc
[afi
][SAFI_LABELED_UNICAST
])
2049 || (safi
== SAFI_LABELED_UNICAST
2050 && peer
->afc
[afi
][SAFI_UNICAST
]))
2051 return BGP_ERR_PEER_SAFI_CONFLICT
;
2053 peer
->afc
[afi
][safi
] = 1;
2054 group
= peer
->group
;
2056 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, tmp_peer
)) {
2057 ret
|= peer_activate_af(tmp_peer
, afi
, safi
);
2060 ret
|= peer_activate_af(peer
, afi
, safi
);
2063 /* If this is the first peer to be activated for this
2064 * afi/labeled-unicast recalc bestpaths to trigger label allocation */
2065 if (safi
== SAFI_LABELED_UNICAST
2066 && !bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
]) {
2068 if (BGP_DEBUG(zebra
, ZEBRA
))
2070 "peer(s) are now active for labeled-unicast, allocate MPLS labels");
2072 bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
] = 1;
2073 bgp_recalculate_afi_safi_bestpaths(bgp
, afi
, SAFI_UNICAST
);
2076 if (safi
== SAFI_FLOWSPEC
) {
2077 /* connect to table manager */
2078 bgp_zebra_init_tm_connect(bgp
);
2083 static bool non_peergroup_deactivate_af(struct peer
*peer
, afi_t afi
,
2086 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2087 flog_err(EC_BGP_PEER_GROUP
, "%s was called for peer-group %s",
2088 __func__
, peer
->host
);
2092 /* Nothing to do if we've already deactivated this peer */
2093 if (!peer
->afc
[afi
][safi
])
2096 /* De-activate the address family configuration. */
2097 peer
->afc
[afi
][safi
] = 0;
2099 if (peer_af_delete(peer
, afi
, safi
) != 0) {
2100 flog_err(EC_BGP_PEER_DELETE
,
2101 "couldn't delete af structure for peer %s(%s, %s)",
2102 peer
->host
, afi2str(afi
), safi2str(safi
));
2106 if (peer
->status
== Established
) {
2107 if (CHECK_FLAG(peer
->cap
, PEER_CAP_DYNAMIC_RCV
)) {
2108 peer
->afc_adv
[afi
][safi
] = 0;
2109 peer
->afc_nego
[afi
][safi
] = 0;
2111 if (peer_active_nego(peer
)) {
2112 bgp_capability_send(peer
, afi
, safi
,
2114 CAPABILITY_ACTION_UNSET
);
2115 bgp_clear_route(peer
, afi
, safi
);
2116 peer
->pcount
[afi
][safi
] = 0;
2118 peer
->last_reset
= PEER_DOWN_NEIGHBOR_DELETE
;
2119 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2120 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2123 peer
->last_reset
= PEER_DOWN_NEIGHBOR_DELETE
;
2124 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2125 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2132 int peer_deactivate(struct peer
*peer
, afi_t afi
, safi_t safi
)
2135 struct peer_group
*group
;
2136 struct peer
*tmp_peer
;
2137 struct listnode
*node
, *nnode
;
2140 /* Nothing to do if we've already de-activated this peer */
2141 if (!peer
->afc
[afi
][safi
])
2144 /* This is a peer-group so de-activate all of the members of the
2145 * peer-group as well */
2146 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2147 peer
->afc
[afi
][safi
] = 0;
2148 group
= peer
->group
;
2150 if (peer_af_delete(peer
, afi
, safi
) != 0) {
2153 "couldn't delete af structure for peer %s(%s, %s)",
2154 peer
->host
, afi2str(afi
), safi2str(safi
));
2157 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, tmp_peer
)) {
2158 ret
|= non_peergroup_deactivate_af(tmp_peer
, afi
, safi
);
2161 ret
|= non_peergroup_deactivate_af(peer
, afi
, safi
);
2166 /* If this is the last peer to be deactivated for this
2167 * afi/labeled-unicast recalc bestpaths to trigger label deallocation */
2168 if (safi
== SAFI_LABELED_UNICAST
2169 && bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
]
2170 && !bgp_afi_safi_peer_exists(bgp
, afi
, safi
)) {
2172 if (BGP_DEBUG(zebra
, ZEBRA
))
2174 "peer(s) are no longer active for labeled-unicast, deallocate MPLS labels");
2176 bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
] = 0;
2177 bgp_recalculate_afi_safi_bestpaths(bgp
, afi
, SAFI_UNICAST
);
2182 void peer_nsf_stop(struct peer
*peer
)
2187 UNSET_FLAG(peer
->sflags
, PEER_STATUS_NSF_WAIT
);
2188 UNSET_FLAG(peer
->sflags
, PEER_STATUS_NSF_MODE
);
2190 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
2191 for (safi
= SAFI_UNICAST
; safi
<= SAFI_MPLS_VPN
; safi
++)
2192 peer
->nsf
[afi
][safi
] = 0;
2194 if (peer
->t_gr_restart
) {
2195 BGP_TIMER_OFF(peer
->t_gr_restart
);
2196 if (bgp_debug_neighbor_events(peer
))
2197 zlog_debug("%s graceful restart timer stopped",
2200 if (peer
->t_gr_stale
) {
2201 BGP_TIMER_OFF(peer
->t_gr_stale
);
2202 if (bgp_debug_neighbor_events(peer
))
2204 "%s graceful restart stalepath timer stopped",
2207 bgp_clear_route_all(peer
);
2210 /* Delete peer from confguration.
2212 * The peer is moved to a dead-end "Deleted" neighbour-state, to allow
2213 * it to "cool off" and refcounts to hit 0, at which state it is freed.
2215 * This function /should/ take care to be idempotent, to guard against
2216 * it being called multiple times through stray events that come in
2217 * that happen to result in this function being called again. That
2218 * said, getting here for a "Deleted" peer is a bug in the neighbour
2221 int peer_delete(struct peer
*peer
)
2227 struct bgp_filter
*filter
;
2228 struct listnode
*pn
;
2231 assert(peer
->status
!= Deleted
);
2234 accept_peer
= CHECK_FLAG(peer
->sflags
, PEER_STATUS_ACCEPT_PEER
);
2236 bgp_keepalives_off(peer
);
2237 bgp_reads_off(peer
);
2238 bgp_writes_off(peer
);
2239 assert(!CHECK_FLAG(peer
->thread_flags
, PEER_THREAD_WRITES_ON
));
2240 assert(!CHECK_FLAG(peer
->thread_flags
, PEER_THREAD_READS_ON
));
2241 assert(!CHECK_FLAG(peer
->thread_flags
, PEER_THREAD_KEEPALIVES_ON
));
2243 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_NSF_WAIT
))
2244 peer_nsf_stop(peer
);
2246 SET_FLAG(peer
->flags
, PEER_FLAG_DELETE
);
2248 bgp_bfd_deregister_peer(peer
);
2250 /* If this peer belongs to peer group, clear up the
2253 if (peer_dynamic_neighbor(peer
))
2254 peer_drop_dynamic_neighbor(peer
);
2256 if ((pn
= listnode_lookup(peer
->group
->peer
, peer
))) {
2258 peer
); /* group->peer list reference */
2259 list_delete_node(peer
->group
->peer
, pn
);
2264 /* Withdraw all information from routing table. We can not use
2265 * BGP_EVENT_ADD (peer, BGP_Stop) at here. Because the event is
2266 * executed after peer structure is deleted.
2268 peer
->last_reset
= PEER_DOWN_NEIGHBOR_DELETE
;
2270 UNSET_FLAG(peer
->flags
, PEER_FLAG_DELETE
);
2272 if (peer
->doppelganger
) {
2273 peer
->doppelganger
->doppelganger
= NULL
;
2274 peer
->doppelganger
= NULL
;
2277 UNSET_FLAG(peer
->sflags
, PEER_STATUS_ACCEPT_PEER
);
2278 bgp_fsm_change_status(peer
, Deleted
);
2280 /* Remove from NHT */
2281 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
))
2282 bgp_unlink_nexthop_by_peer(peer
);
2284 /* Password configuration */
2285 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
)) {
2286 XFREE(MTYPE_PEER_PASSWORD
, peer
->password
);
2288 if (!accept_peer
&& !BGP_PEER_SU_UNSPEC(peer
)
2289 && !CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
2290 bgp_md5_unset(peer
);
2293 bgp_timer_set(peer
); /* stops all timers for Deleted */
2295 /* Delete from all peer list. */
2296 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)
2297 && (pn
= listnode_lookup(bgp
->peer
, peer
))) {
2298 peer_unlock(peer
); /* bgp peer list reference */
2299 list_delete_node(bgp
->peer
, pn
);
2300 hash_release(bgp
->peerhash
, peer
);
2305 stream_fifo_free(peer
->ibuf
);
2310 stream_fifo_free(peer
->obuf
);
2314 if (peer
->ibuf_work
) {
2315 ringbuf_del(peer
->ibuf_work
);
2316 peer
->ibuf_work
= NULL
;
2319 if (peer
->obuf_work
) {
2320 stream_free(peer
->obuf_work
);
2321 peer
->obuf_work
= NULL
;
2324 if (peer
->scratch
) {
2325 stream_free(peer
->scratch
);
2326 peer
->scratch
= NULL
;
2329 /* Local and remote addresses. */
2330 if (peer
->su_local
) {
2331 sockunion_free(peer
->su_local
);
2332 peer
->su_local
= NULL
;
2335 if (peer
->su_remote
) {
2336 sockunion_free(peer
->su_remote
);
2337 peer
->su_remote
= NULL
;
2340 /* Free filter related memory. */
2341 FOREACH_AFI_SAFI (afi
, safi
) {
2342 filter
= &peer
->filter
[afi
][safi
];
2344 for (i
= FILTER_IN
; i
< FILTER_MAX
; i
++) {
2345 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->dlist
[i
].name
);
2346 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->plist
[i
].name
);
2347 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->aslist
[i
].name
);
2350 for (i
= RMAP_IN
; i
< RMAP_MAX
; i
++) {
2351 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[i
].name
);
2354 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
2355 XFREE(MTYPE_ROUTE_MAP_NAME
, peer
->default_rmap
[afi
][safi
].name
);
2358 FOREACH_AFI_SAFI (afi
, safi
)
2359 peer_af_delete(peer
, afi
, safi
);
2361 XFREE(MTYPE_BGP_PEER_HOST
, peer
->hostname
);
2362 XFREE(MTYPE_BGP_PEER_HOST
, peer
->domainname
);
2364 peer_unlock(peer
); /* initial reference */
2369 static int peer_group_cmp(struct peer_group
*g1
, struct peer_group
*g2
)
2371 return strcmp(g1
->name
, g2
->name
);
2374 /* Peer group cofiguration. */
2375 static struct peer_group
*peer_group_new(void)
2377 return XCALLOC(MTYPE_PEER_GROUP
, sizeof(struct peer_group
));
2380 static void peer_group_free(struct peer_group
*group
)
2382 XFREE(MTYPE_PEER_GROUP
, group
);
2385 struct peer_group
*peer_group_lookup(struct bgp
*bgp
, const char *name
)
2387 struct peer_group
*group
;
2388 struct listnode
*node
, *nnode
;
2390 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
2391 if (strcmp(group
->name
, name
) == 0)
2397 struct peer_group
*peer_group_get(struct bgp
*bgp
, const char *name
)
2399 struct peer_group
*group
;
2402 group
= peer_group_lookup(bgp
, name
);
2406 group
= peer_group_new();
2408 XFREE(MTYPE_PEER_GROUP_HOST
, group
->name
);
2409 group
->name
= XSTRDUP(MTYPE_PEER_GROUP_HOST
, name
);
2410 group
->peer
= list_new();
2411 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
2412 group
->listen_range
[afi
] = list_new();
2413 group
->conf
= peer_new(bgp
);
2414 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_NO_DEFAULT_IPV4
))
2415 group
->conf
->afc
[AFI_IP
][SAFI_UNICAST
] = 1;
2416 XFREE(MTYPE_BGP_PEER_HOST
, group
->conf
->host
);
2417 group
->conf
->host
= XSTRDUP(MTYPE_BGP_PEER_HOST
, name
);
2418 group
->conf
->group
= group
;
2419 group
->conf
->as
= 0;
2420 group
->conf
->ttl
= BGP_DEFAULT_TTL
;
2421 group
->conf
->gtsm_hops
= BGP_GTSM_HOPS_DISABLED
;
2422 group
->conf
->v_routeadv
= BGP_DEFAULT_EBGP_ROUTEADV
;
2423 SET_FLAG(group
->conf
->sflags
, PEER_STATUS_GROUP
);
2424 listnode_add_sort(bgp
->group
, group
);
2429 static void peer_group2peer_config_copy(struct peer_group
*group
,
2439 peer
->as
= conf
->as
;
2442 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_LOCAL_AS
))
2443 peer
->change_local_as
= conf
->change_local_as
;
2445 /* If peer-group has configured TTL then override it */
2446 if (conf
->ttl
!= BGP_DEFAULT_TTL
)
2447 peer
->ttl
= conf
->ttl
;
2450 peer
->gtsm_hops
= conf
->gtsm_hops
;
2452 /* peer flags apply */
2453 flags_tmp
= conf
->flags
& ~peer
->flags_override
;
2454 flags_tmp
^= conf
->flags_invert
^ peer
->flags_invert
;
2455 flags_tmp
&= ~peer
->flags_override
;
2457 UNSET_FLAG(peer
->flags
, ~peer
->flags_override
);
2458 SET_FLAG(peer
->flags
, flags_tmp
);
2459 SET_FLAG(peer
->flags_invert
, conf
->flags_invert
);
2461 /* peer timers apply */
2462 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_TIMER
)) {
2463 PEER_ATTR_INHERIT(peer
, group
, holdtime
);
2464 PEER_ATTR_INHERIT(peer
, group
, keepalive
);
2467 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_TIMER_CONNECT
)) {
2468 PEER_ATTR_INHERIT(peer
, group
, connect
);
2469 if (CHECK_FLAG(conf
->flags
, PEER_FLAG_TIMER_CONNECT
))
2470 peer
->v_connect
= conf
->connect
;
2472 peer
->v_connect
= peer
->bgp
->default_connect_retry
;
2475 /* advertisement-interval apply */
2476 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_ROUTEADV
)) {
2477 PEER_ATTR_INHERIT(peer
, group
, routeadv
);
2478 if (CHECK_FLAG(conf
->flags
, PEER_FLAG_ROUTEADV
))
2479 peer
->v_routeadv
= conf
->routeadv
;
2481 peer
->v_routeadv
= (peer_sort(peer
) == BGP_PEER_IBGP
)
2482 ? BGP_DEFAULT_IBGP_ROUTEADV
2483 : BGP_DEFAULT_EBGP_ROUTEADV
;
2486 /* capability extended-nexthop apply */
2487 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_CAPABILITY_ENHE
))
2488 if (CHECK_FLAG(conf
->flags
, PEER_FLAG_CAPABILITY_ENHE
))
2489 SET_FLAG(peer
->flags
, PEER_FLAG_CAPABILITY_ENHE
);
2491 /* password apply */
2492 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_PASSWORD
))
2493 PEER_STR_ATTR_INHERIT(peer
, group
, password
,
2494 MTYPE_PEER_PASSWORD
);
2496 if (!BGP_PEER_SU_UNSPEC(peer
))
2499 /* update-source apply */
2500 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_UPDATE_SOURCE
)) {
2501 if (conf
->update_source
) {
2502 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
2503 PEER_SU_ATTR_INHERIT(peer
, group
, update_source
);
2504 } else if (conf
->update_if
) {
2505 sockunion_free(peer
->update_source
);
2506 PEER_STR_ATTR_INHERIT(peer
, group
, update_if
,
2507 MTYPE_PEER_UPDATE_SOURCE
);
2511 /* Update GR flags for the peer. */
2512 bgp_peer_gr_flags_update(peer
);
2514 bgp_bfd_peer_group2peer_copy(conf
, peer
);
2517 /* Peer group's remote AS configuration. */
2518 int peer_group_remote_as(struct bgp
*bgp
, const char *group_name
, as_t
*as
,
2521 struct peer_group
*group
;
2523 struct listnode
*node
, *nnode
;
2525 group
= peer_group_lookup(bgp
, group_name
);
2529 if ((as_type
== group
->conf
->as_type
) && (group
->conf
->as
== *as
))
2533 /* When we setup peer-group AS number all peer group member's AS
2534 number must be updated to same number. */
2535 peer_as_change(group
->conf
, *as
, as_type
);
2537 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2538 if (((peer
->as_type
== AS_SPECIFIED
) && peer
->as
!= *as
)
2539 || (peer
->as_type
!= as_type
))
2540 peer_as_change(peer
, *as
, as_type
);
2546 void peer_notify_unconfig(struct peer
*peer
)
2548 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
2549 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2550 BGP_NOTIFY_CEASE_PEER_UNCONFIG
);
2553 void peer_group_notify_unconfig(struct peer_group
*group
)
2555 struct peer
*peer
, *other
;
2556 struct listnode
*node
, *nnode
;
2558 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2559 other
= peer
->doppelganger
;
2560 if (other
&& other
->status
!= Deleted
) {
2561 other
->group
= NULL
;
2562 peer_notify_unconfig(other
);
2564 peer_notify_unconfig(peer
);
2568 int peer_group_delete(struct peer_group
*group
)
2572 struct prefix
*prefix
;
2574 struct listnode
*node
, *nnode
;
2579 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2580 other
= peer
->doppelganger
;
2582 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CAPABILITY_ENHE
))
2583 bgp_zebra_terminate_radv(bgp
, peer
);
2586 if (other
&& other
->status
!= Deleted
) {
2587 other
->group
= NULL
;
2591 list_delete(&group
->peer
);
2593 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
2594 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
,
2596 prefix_free(&prefix
);
2598 list_delete(&group
->listen_range
[afi
]);
2601 XFREE(MTYPE_PEER_GROUP_HOST
, group
->name
);
2604 bfd_info_free(&(group
->conf
->bfd_info
));
2606 group
->conf
->group
= NULL
;
2607 peer_delete(group
->conf
);
2609 /* Delete from all peer_group list. */
2610 listnode_delete(bgp
->group
, group
);
2612 peer_group_free(group
);
2617 int peer_group_remote_as_delete(struct peer_group
*group
)
2619 struct peer
*peer
, *other
;
2620 struct listnode
*node
, *nnode
;
2622 if ((group
->conf
->as_type
== AS_UNSPECIFIED
)
2623 || ((!group
->conf
->as
) && (group
->conf
->as_type
== AS_SPECIFIED
)))
2626 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2627 other
= peer
->doppelganger
;
2629 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CAPABILITY_ENHE
))
2630 bgp_zebra_terminate_radv(peer
->bgp
, peer
);
2634 if (other
&& other
->status
!= Deleted
) {
2635 other
->group
= NULL
;
2639 list_delete_all_node(group
->peer
);
2641 group
->conf
->as
= 0;
2642 group
->conf
->as_type
= AS_UNSPECIFIED
;
2647 int peer_group_listen_range_add(struct peer_group
*group
, struct prefix
*range
)
2649 struct prefix
*prefix
;
2650 struct listnode
*node
, *nnode
;
2653 afi
= family2afi(range
->family
);
2655 /* Group needs remote AS configured. */
2656 if (group
->conf
->as_type
== AS_UNSPECIFIED
)
2657 return BGP_ERR_PEER_GROUP_NO_REMOTE_AS
;
2659 /* Ensure no duplicates. Currently we don't care about overlaps. */
2660 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
, prefix
)) {
2661 if (prefix_same(range
, prefix
))
2665 prefix
= prefix_new();
2666 prefix_copy(prefix
, range
);
2667 listnode_add(group
->listen_range
[afi
], prefix
);
2669 /* Update passwords for new ranges */
2670 if (group
->conf
->password
)
2671 bgp_md5_set_prefix(prefix
, group
->conf
->password
);
2676 int peer_group_listen_range_del(struct peer_group
*group
, struct prefix
*range
)
2678 struct prefix
*prefix
, prefix2
;
2679 struct listnode
*node
, *nnode
;
2682 char buf
[PREFIX2STR_BUFFER
];
2684 afi
= family2afi(range
->family
);
2686 /* Identify the listen range. */
2687 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
, prefix
)) {
2688 if (prefix_same(range
, prefix
))
2693 return BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND
;
2695 prefix2str(prefix
, buf
, sizeof(buf
));
2697 /* Dispose off any dynamic neighbors that exist due to this listen range
2699 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2700 if (!peer_dynamic_neighbor(peer
))
2703 sockunion2hostprefix(&peer
->su
, &prefix2
);
2704 if (prefix_match(prefix
, &prefix2
)) {
2705 if (bgp_debug_neighbor_events(peer
))
2707 "Deleting dynamic neighbor %s group %s upon delete of listen range %s",
2708 peer
->host
, group
->name
, buf
);
2713 /* Get rid of the listen range */
2714 listnode_delete(group
->listen_range
[afi
], prefix
);
2716 /* Remove passwords for deleted ranges */
2717 if (group
->conf
->password
)
2718 bgp_md5_unset_prefix(prefix
);
2723 /* Bind specified peer to peer group. */
2724 int peer_group_bind(struct bgp
*bgp
, union sockunion
*su
, struct peer
*peer
,
2725 struct peer_group
*group
, as_t
*as
)
2727 int first_member
= 0;
2730 bgp_peer_sort_t ptype
, gtype
;
2732 /* Lookup the peer. */
2734 peer
= peer_lookup(bgp
, su
);
2736 /* The peer exist, bind it to the peer-group */
2738 /* When the peer already belongs to a peer-group, check the
2740 if (peer_group_active(peer
)) {
2742 /* The peer is already bound to the peer-group,
2745 if (strcmp(peer
->group
->name
, group
->name
) == 0)
2748 return BGP_ERR_PEER_GROUP_CANT_CHANGE
;
2751 /* The peer has not specified a remote-as, inherit it from the
2753 if (peer
->as_type
== AS_UNSPECIFIED
) {
2754 peer
->as_type
= group
->conf
->as_type
;
2755 peer
->as
= group
->conf
->as
;
2756 peer
->sort
= group
->conf
->sort
;
2759 ptype
= peer_sort(peer
);
2760 if (!group
->conf
->as
&& ptype
!= BGP_PEER_UNSPECIFIED
) {
2761 gtype
= peer_sort(group
->conf
);
2762 if ((gtype
!= BGP_PEER_INTERNAL
) && (gtype
!= ptype
)) {
2765 return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT
;
2768 if (gtype
== BGP_PEER_INTERNAL
)
2772 peer_group2peer_config_copy(group
, peer
);
2774 FOREACH_AFI_SAFI (afi
, safi
) {
2775 if (group
->conf
->afc
[afi
][safi
]) {
2776 peer
->afc
[afi
][safi
] = 1;
2778 if (peer_af_find(peer
, afi
, safi
)
2779 || peer_af_create(peer
, afi
, safi
)) {
2780 peer_group2peer_config_copy_af(
2781 group
, peer
, afi
, safi
);
2783 } else if (peer
->afc
[afi
][safi
])
2784 peer_deactivate(peer
, afi
, safi
);
2788 assert(group
&& peer
->group
== group
);
2790 listnode_delete(bgp
->peer
, peer
);
2792 peer
->group
= group
;
2793 listnode_add_sort(bgp
->peer
, peer
);
2795 peer
= peer_lock(peer
); /* group->peer list reference */
2796 listnode_add(group
->peer
, peer
);
2800 gtype
= peer_sort(group
->conf
);
2801 /* Advertisement-interval reset */
2802 if (!CHECK_FLAG(group
->conf
->flags
,
2803 PEER_FLAG_ROUTEADV
)) {
2804 group
->conf
->v_routeadv
=
2805 (gtype
== BGP_PEER_IBGP
)
2806 ? BGP_DEFAULT_IBGP_ROUTEADV
2807 : BGP_DEFAULT_EBGP_ROUTEADV
;
2810 /* ebgp-multihop reset */
2811 if (gtype
== BGP_PEER_IBGP
)
2812 group
->conf
->ttl
= MAXTTL
;
2814 /* local-as reset */
2815 if (gtype
!= BGP_PEER_EBGP
) {
2816 group
->conf
->change_local_as
= 0;
2817 peer_flag_unset(group
->conf
,
2818 PEER_FLAG_LOCAL_AS
);
2819 peer_flag_unset(group
->conf
,
2820 PEER_FLAG_LOCAL_AS_NO_PREPEND
);
2821 peer_flag_unset(group
->conf
,
2822 PEER_FLAG_LOCAL_AS_REPLACE_AS
);
2826 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
2828 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
2829 peer
->last_reset
= PEER_DOWN_RMAP_BIND
;
2830 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2831 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2833 bgp_session_reset(peer
);
2837 /* Create a new peer. */
2839 if ((group
->conf
->as_type
== AS_SPECIFIED
)
2840 && (!group
->conf
->as
)) {
2841 return BGP_ERR_PEER_GROUP_NO_REMOTE_AS
;
2844 peer
= peer_create(su
, NULL
, bgp
, bgp
->as
, group
->conf
->as
,
2845 group
->conf
->as_type
, 0, 0, group
);
2847 peer
= peer_lock(peer
); /* group->peer list reference */
2848 listnode_add(group
->peer
, peer
);
2850 peer_group2peer_config_copy(group
, peer
);
2852 /* If the peer-group is active for this afi/safi then activate
2854 FOREACH_AFI_SAFI (afi
, safi
) {
2855 if (group
->conf
->afc
[afi
][safi
]) {
2856 peer
->afc
[afi
][safi
] = 1;
2857 peer_af_create(peer
, afi
, safi
);
2858 peer_group2peer_config_copy_af(group
, peer
, afi
,
2860 } else if (peer
->afc
[afi
][safi
])
2861 peer_deactivate(peer
, afi
, safi
);
2864 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
2866 /* Set up peer's events and timers. */
2867 if (peer_active(peer
))
2868 bgp_timer_set(peer
);
2874 static int bgp_startup_timer_expire(struct thread
*thread
)
2878 bgp
= THREAD_ARG(thread
);
2879 bgp
->t_startup
= NULL
;
2885 * On shutdown we call the cleanup function which
2886 * does a free of the link list nodes, free up
2887 * the data we are pointing at too.
2889 static void bgp_vrf_string_name_delete(void *data
)
2893 XFREE(MTYPE_TMP
, vname
);
2896 /* BGP instance creation by `router bgp' commands. */
2897 static struct bgp
*bgp_create(as_t
*as
, const char *name
,
2898 enum bgp_instance_type inst_type
)
2904 if ((bgp
= XCALLOC(MTYPE_BGP
, sizeof(struct bgp
))) == NULL
)
2907 if (BGP_DEBUG(zebra
, ZEBRA
)) {
2908 if (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
2909 zlog_debug("Creating Default VRF, AS %u", *as
);
2911 zlog_debug("Creating %s %s, AS %u",
2912 (inst_type
== BGP_INSTANCE_TYPE_VRF
)
2918 /* Default the EVPN VRF to the default one */
2919 if (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
&& !bgp_master
.bgp_evpn
) {
2925 bgp
->heuristic_coalesce
= true;
2926 bgp
->inst_type
= inst_type
;
2927 bgp
->vrf_id
= (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
) ? VRF_DEFAULT
2929 bgp
->peer_self
= peer_new(bgp
);
2930 XFREE(MTYPE_BGP_PEER_HOST
, bgp
->peer_self
->host
);
2931 bgp
->peer_self
->host
=
2932 XSTRDUP(MTYPE_BGP_PEER_HOST
, "Static announcement");
2933 XFREE(MTYPE_BGP_PEER_HOST
, bgp
->peer_self
->hostname
);
2934 if (cmd_hostname_get())
2935 bgp
->peer_self
->hostname
=
2936 XSTRDUP(MTYPE_BGP_PEER_HOST
, cmd_hostname_get());
2938 XFREE(MTYPE_BGP_PEER_HOST
, bgp
->peer_self
->domainname
);
2939 if (cmd_domainname_get())
2940 bgp
->peer_self
->domainname
=
2941 XSTRDUP(MTYPE_BGP_PEER_HOST
, cmd_domainname_get());
2942 bgp
->peer
= list_new();
2943 bgp
->peer
->cmp
= (int (*)(void *, void *))peer_cmp
;
2944 bgp
->peerhash
= hash_create(peer_hash_key_make
, peer_hash_same
,
2946 bgp
->peerhash
->max_size
= BGP_PEER_MAX_HASH_SIZE
;
2948 bgp
->group
= list_new();
2949 bgp
->group
->cmp
= (int (*)(void *, void *))peer_group_cmp
;
2951 FOREACH_AFI_SAFI (afi
, safi
) {
2952 bgp
->route
[afi
][safi
] = bgp_table_init(bgp
, afi
, safi
);
2953 bgp
->aggregate
[afi
][safi
] = bgp_table_init(bgp
, afi
, safi
);
2954 bgp
->rib
[afi
][safi
] = bgp_table_init(bgp
, afi
, safi
);
2956 /* Enable maximum-paths */
2957 bgp_maximum_paths_set(bgp
, afi
, safi
, BGP_PEER_EBGP
,
2959 bgp_maximum_paths_set(bgp
, afi
, safi
, BGP_PEER_IBGP
,
2961 /* Initialize graceful restart info */
2962 bgp
->gr_info
[afi
][safi
].eor_required
= 0;
2963 bgp
->gr_info
[afi
][safi
].eor_received
= 0;
2964 bgp
->gr_info
[afi
][safi
].t_select_deferral
= NULL
;
2965 bgp
->gr_info
[afi
][safi
].t_route_select
= NULL
;
2966 bgp
->gr_info
[afi
][safi
].route_list
= list_new();
2969 bgp
->v_update_delay
= BGP_UPDATE_DELAY_DEF
;
2970 bgp
->default_local_pref
= BGP_DEFAULT_LOCAL_PREF
;
2971 bgp
->default_subgroup_pkt_queue_max
=
2972 BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX
;
2973 bgp_timers_unset(bgp
);
2974 bgp
->restart_time
= BGP_DEFAULT_RESTART_TIME
;
2975 bgp
->stalepath_time
= BGP_DEFAULT_STALEPATH_TIME
;
2976 bgp
->select_defer_time
= BGP_DEFAULT_SELECT_DEFERRAL_TIME
;
2977 bgp
->rib_stale_time
= BGP_DEFAULT_RIB_STALE_TIME
;
2978 bgp
->dynamic_neighbors_limit
= BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT
;
2979 bgp
->dynamic_neighbors_count
= 0;
2980 bgp
->lb_ref_bw
= BGP_LINK_BW_REF_BW
;
2981 bgp
->lb_handling
= BGP_LINK_BW_ECMP
;
2982 bgp
->reject_as_sets
= false;
2983 bgp_addpath_init_bgp_data(&bgp
->tx_addpath
);
2987 #ifdef ENABLE_BGP_VNC
2988 if (inst_type
!= BGP_INSTANCE_TYPE_VRF
) {
2989 bgp
->rfapi
= bgp_rfapi_new(bgp
);
2991 assert(bgp
->rfapi_cfg
);
2993 #endif /* ENABLE_BGP_VNC */
2995 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
2996 bgp
->vpn_policy
[afi
].bgp
= bgp
;
2997 bgp
->vpn_policy
[afi
].afi
= afi
;
2998 bgp
->vpn_policy
[afi
].tovpn_label
= MPLS_LABEL_NONE
;
2999 bgp
->vpn_policy
[afi
].tovpn_zebra_vrf_label_last_sent
=
3002 bgp
->vpn_policy
[afi
].import_vrf
= list_new();
3003 bgp
->vpn_policy
[afi
].import_vrf
->del
=
3004 bgp_vrf_string_name_delete
;
3005 bgp
->vpn_policy
[afi
].export_vrf
= list_new();
3006 bgp
->vpn_policy
[afi
].export_vrf
->del
=
3007 bgp_vrf_string_name_delete
;
3010 bgp
->name
= XSTRDUP(MTYPE_BGP
, name
);
3012 thread_add_timer(bm
->master
, bgp_startup_timer_expire
, bgp
,
3013 bgp
->restart_time
, &bgp
->t_startup
);
3015 /* printable name we can use in debug messages */
3016 if (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
) {
3017 bgp
->name_pretty
= XSTRDUP(MTYPE_BGP
, "VRF default");
3027 len
= 4 + 1 + strlen(n
) + 1; /* "view foo\0" */
3029 bgp
->name_pretty
= XCALLOC(MTYPE_BGP
, len
);
3030 snprintf(bgp
->name_pretty
, len
, "%s %s",
3031 (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
)
3037 atomic_store_explicit(&bgp
->wpkt_quanta
, BGP_WRITE_PACKET_MAX
,
3038 memory_order_relaxed
);
3039 atomic_store_explicit(&bgp
->rpkt_quanta
, BGP_READ_PACKET_MAX
,
3040 memory_order_relaxed
);
3041 bgp
->coalesce_time
= BGP_DEFAULT_SUBGROUP_COALESCE_TIME
;
3045 update_bgp_group_init(bgp
);
3047 /* assign a unique rd id for auto derivation of vrf's RD */
3048 bf_assign_index(bm
->rd_idspace
, bgp
->vrf_rd_id
);
3050 bgp
->evpn_info
= XCALLOC(MTYPE_BGP_EVPN_INFO
,
3051 sizeof(struct bgp_evpn_info
));
3056 /*initilize global GR FSM */
3057 bgp_global_gr_init(bgp
);
3061 /* Return the "default VRF" instance of BGP. */
3062 struct bgp
*bgp_get_default(void)
3065 struct listnode
*node
, *nnode
;
3067 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
))
3068 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
3073 /* Lookup BGP entry. */
3074 struct bgp
*bgp_lookup(as_t as
, const char *name
)
3077 struct listnode
*node
, *nnode
;
3079 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
))
3081 && ((bgp
->name
== NULL
&& name
== NULL
)
3082 || (bgp
->name
&& name
&& strcmp(bgp
->name
, name
) == 0)))
3087 /* Lookup BGP structure by view name. */
3088 struct bgp
*bgp_lookup_by_name(const char *name
)
3091 struct listnode
*node
, *nnode
;
3093 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
))
3094 if ((bgp
->name
== NULL
&& name
== NULL
)
3095 || (bgp
->name
&& name
&& strcmp(bgp
->name
, name
) == 0))
3100 /* Lookup BGP instance based on VRF id. */
3101 /* Note: Only to be used for incoming messages from Zebra. */
3102 struct bgp
*bgp_lookup_by_vrf_id(vrf_id_t vrf_id
)
3106 /* Lookup VRF (in tree) and follow link. */
3107 vrf
= vrf_lookup_by_id(vrf_id
);
3110 return (vrf
->info
) ? (struct bgp
*)vrf
->info
: NULL
;
3113 /* Sets the BGP instance where EVPN is enabled */
3114 void bgp_set_evpn(struct bgp
*bgp
)
3116 if (bm
->bgp_evpn
== bgp
)
3119 /* First, release the reference count we hold on the instance */
3121 bgp_unlock(bm
->bgp_evpn
);
3125 /* Increase the reference count on this new VRF */
3127 bgp_lock(bm
->bgp_evpn
);
3130 /* Returns the BGP instance where EVPN is enabled, if any */
3131 struct bgp
*bgp_get_evpn(void)
3133 return bm
->bgp_evpn
;
3136 /* handle socket creation or deletion, if necessary
3137 * this is called for all new BGP instances
3139 int bgp_handle_socket(struct bgp
*bgp
, struct vrf
*vrf
, vrf_id_t old_vrf_id
,
3144 /* Create BGP server socket, if listen mode not disabled */
3145 if (!bgp
|| bgp_option_check(BGP_OPT_NO_LISTEN
))
3147 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
) {
3149 * suppress vrf socket
3152 bgp_close_vrf_socket(bgp
);
3156 return BGP_ERR_INVALID_VALUE
;
3158 * if vrf_id did not change
3160 if (vrf
->vrf_id
== old_vrf_id
)
3162 if (old_vrf_id
!= VRF_UNKNOWN
) {
3163 /* look for old socket. close it. */
3164 bgp_close_vrf_socket(bgp
);
3166 /* if backend is not yet identified ( VRF_UNKNOWN) then
3167 * creation will be done later
3169 if (vrf
->vrf_id
== VRF_UNKNOWN
)
3171 ret
= bgp_socket(bgp
, bm
->port
, bm
->address
);
3173 return BGP_ERR_INVALID_VALUE
;
3176 return bgp_check_main_socket(create
, bgp
);
3179 /* Called from VTY commands. */
3180 int bgp_get(struct bgp
**bgp_val
, as_t
*as
, const char *name
,
3181 enum bgp_instance_type inst_type
)
3184 struct vrf
*vrf
= NULL
;
3186 /* Multiple instance check. */
3188 bgp
= bgp_lookup_by_name(name
);
3190 bgp
= bgp_get_default();
3192 /* Already exists. */
3194 if (bgp
->as
!= *as
) {
3196 return BGP_ERR_INSTANCE_MISMATCH
;
3198 if (bgp
->inst_type
!= inst_type
)
3199 return BGP_ERR_INSTANCE_MISMATCH
;
3204 bgp
= bgp_create(as
, name
, inst_type
);
3205 if (bgp_option_check(BGP_OPT_NO_ZEBRA
) && name
)
3206 bgp
->vrf_id
= vrf_generate_id();
3207 bgp_router_id_set(bgp
, &bgp
->router_id_zebra
, true);
3208 bgp_address_init(bgp
);
3209 bgp_tip_hash_init(bgp
);
3213 bgp
->t_rmap_def_originate_eval
= NULL
;
3215 /* If Default instance or VRF, link to the VRF structure, if present. */
3216 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
3217 || bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
) {
3218 vrf
= bgp_vrf_lookup_by_instance_type(bgp
);
3220 bgp_vrf_link(bgp
, vrf
);
3222 /* BGP server socket already processed if BGP instance
3223 * already part of the list
3225 bgp_handle_socket(bgp
, vrf
, VRF_UNKNOWN
, true);
3226 listnode_add(bm
->bgp
, bgp
);
3228 if (IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
3229 if (BGP_DEBUG(zebra
, ZEBRA
))
3230 zlog_debug("%s: Registering BGP instance %s to zebra",
3232 bgp_zebra_instance_register(bgp
);
3239 * Make BGP instance "up". Applies only to VRFs (non-default) and
3240 * implies the VRF has been learnt from Zebra.
3242 void bgp_instance_up(struct bgp
*bgp
)
3245 struct listnode
*node
, *next
;
3247 /* Register with zebra. */
3248 bgp_zebra_instance_register(bgp
);
3250 /* Kick off any peers that may have been configured. */
3251 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
)) {
3252 if (!BGP_PEER_START_SUPPRESSED(peer
))
3253 BGP_EVENT_ADD(peer
, BGP_Start
);
3256 /* Process any networks that have been configured. */
3257 bgp_static_add(bgp
);
3261 * Make BGP instance "down". Applies only to VRFs (non-default) and
3262 * implies the VRF has been deleted by Zebra.
3264 void bgp_instance_down(struct bgp
*bgp
)
3267 struct listnode
*node
;
3268 struct listnode
*next
;
3271 if (bgp
->t_rmap_def_originate_eval
) {
3272 BGP_TIMER_OFF(bgp
->t_rmap_def_originate_eval
);
3273 bgp_unlock(bgp
); /* TODO - This timer is started with a lock -
3277 /* Bring down peers, so corresponding routes are purged. */
3278 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
)) {
3279 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
3280 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
3281 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
);
3283 bgp_session_reset(peer
);
3286 /* Purge network and redistributed routes. */
3287 bgp_purge_static_redist_routes(bgp
);
3289 /* Cleanup registered nexthops (flags) */
3290 bgp_cleanup_nexthops(bgp
);
3293 /* Delete BGP instance. */
3294 int bgp_delete(struct bgp
*bgp
)
3297 struct peer_group
*group
;
3298 struct listnode
*node
, *next
;
3303 struct graceful_restart_info
*gr_info
;
3307 hook_call(bgp_inst_delete
, bgp
);
3309 THREAD_OFF(bgp
->t_startup
);
3310 THREAD_OFF(bgp
->t_maxmed_onstartup
);
3311 THREAD_OFF(bgp
->t_update_delay
);
3312 THREAD_OFF(bgp
->t_establish_wait
);
3314 /* Set flag indicating bgp instance delete in progress */
3315 SET_FLAG(bgp
->flags
, BGP_FLAG_DELETE_IN_PROGRESS
);
3317 /* Delete the graceful restart info */
3318 FOREACH_AFI_SAFI (afi
, safi
) {
3319 gr_info
= &bgp
->gr_info
[afi
][safi
];
3323 BGP_TIMER_OFF(gr_info
->t_select_deferral
);
3324 BGP_TIMER_OFF(gr_info
->t_route_select
);
3325 if (gr_info
->route_list
)
3326 list_delete(&gr_info
->route_list
);
3329 if (BGP_DEBUG(zebra
, ZEBRA
)) {
3330 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
3331 zlog_debug("Deleting Default VRF");
3333 zlog_debug("Deleting %s %s",
3334 (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
)
3340 /* unmap from RT list */
3341 bgp_evpn_vrf_delete(bgp
);
3343 /* unmap bgp vrf label */
3344 vpn_leak_zebra_vrf_label_withdraw(bgp
, AFI_IP
);
3345 vpn_leak_zebra_vrf_label_withdraw(bgp
, AFI_IP6
);
3348 if (bgp
->t_rmap_def_originate_eval
) {
3349 BGP_TIMER_OFF(bgp
->t_rmap_def_originate_eval
);
3350 bgp_unlock(bgp
); /* TODO - This timer is started with a lock -
3354 /* Inform peers we're going down. */
3355 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
)) {
3356 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
3357 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
3358 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
);
3361 /* Delete static routes (networks). */
3362 bgp_static_delete(bgp
);
3364 /* Unset redistribution. */
3365 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
3366 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
3367 if (i
!= ZEBRA_ROUTE_BGP
)
3368 bgp_redistribute_unset(bgp
, afi
, i
, 0);
3370 /* Free peers and peer-groups. */
3371 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, next
, group
))
3372 peer_group_delete(group
);
3374 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
))
3377 if (bgp
->peer_self
) {
3378 peer_delete(bgp
->peer_self
);
3379 bgp
->peer_self
= NULL
;
3382 update_bgp_group_free(bgp
);
3384 /* TODO - Other memory may need to be freed - e.g., NHT */
3386 #ifdef ENABLE_BGP_VNC
3389 bgp_cleanup_routes(bgp
);
3391 for (afi
= 0; afi
< AFI_MAX
; ++afi
) {
3392 if (!bgp
->vpn_policy
[afi
].import_redirect_rtlist
)
3395 &bgp
->vpn_policy
[afi
]
3396 .import_redirect_rtlist
);
3397 bgp
->vpn_policy
[afi
].import_redirect_rtlist
= NULL
;
3400 /* Deregister from Zebra, if needed */
3401 if (IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
3402 if (BGP_DEBUG(zebra
, ZEBRA
))
3404 "%s: deregistering this bgp %s instance from zebra",
3405 __func__
, bgp
->name
);
3406 bgp_zebra_instance_deregister(bgp
);
3409 /* Remove visibility via the master list - there may however still be
3410 * routes to be processed still referencing the struct bgp.
3412 listnode_delete(bm
->bgp
, bgp
);
3414 /* Free interfaces in this instance. */
3417 vrf
= bgp_vrf_lookup_by_instance_type(bgp
);
3418 bgp_handle_socket(bgp
, vrf
, VRF_UNKNOWN
, false);
3420 bgp_vrf_unlink(bgp
, vrf
);
3422 /* Update EVPN VRF pointer */
3423 if (bm
->bgp_evpn
== bgp
) {
3424 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
3427 bgp_set_evpn(bgp_get_default());
3430 thread_master_free_unused(bm
->master
);
3431 bgp_unlock(bgp
); /* initial reference */
3436 void bgp_free(struct bgp
*bgp
)
3440 struct bgp_table
*table
;
3441 struct bgp_dest
*dest
;
3442 struct bgp_rmap
*rmap
;
3446 list_delete(&bgp
->group
);
3447 list_delete(&bgp
->peer
);
3449 if (bgp
->peerhash
) {
3450 hash_free(bgp
->peerhash
);
3451 bgp
->peerhash
= NULL
;
3454 FOREACH_AFI_SAFI (afi
, safi
) {
3455 /* Special handling for 2-level routing tables. */
3456 if (safi
== SAFI_MPLS_VPN
|| safi
== SAFI_ENCAP
3457 || safi
== SAFI_EVPN
) {
3458 for (dest
= bgp_table_top(bgp
->rib
[afi
][safi
]); dest
;
3459 dest
= bgp_route_next(dest
)) {
3460 table
= bgp_dest_get_bgp_table_info(dest
);
3461 bgp_table_finish(&table
);
3464 if (bgp
->route
[afi
][safi
])
3465 bgp_table_finish(&bgp
->route
[afi
][safi
]);
3466 if (bgp
->aggregate
[afi
][safi
])
3467 bgp_table_finish(&bgp
->aggregate
[afi
][safi
]);
3468 if (bgp
->rib
[afi
][safi
])
3469 bgp_table_finish(&bgp
->rib
[afi
][safi
]);
3470 rmap
= &bgp
->table_map
[afi
][safi
];
3471 XFREE(MTYPE_ROUTE_MAP_NAME
, rmap
->name
);
3474 bgp_scan_finish(bgp
);
3475 bgp_address_destroy(bgp
);
3476 bgp_tip_hash_destroy(bgp
);
3478 /* release the auto RD id */
3479 bf_release_index(bm
->rd_idspace
, bgp
->vrf_rd_id
);
3481 bgp_evpn_cleanup(bgp
);
3482 bgp_pbr_cleanup(bgp
);
3483 XFREE(MTYPE_BGP_EVPN_INFO
, bgp
->evpn_info
);
3485 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
3486 vpn_policy_direction_t dir
;
3488 if (bgp
->vpn_policy
[afi
].import_vrf
)
3489 list_delete(&bgp
->vpn_policy
[afi
].import_vrf
);
3490 if (bgp
->vpn_policy
[afi
].export_vrf
)
3491 list_delete(&bgp
->vpn_policy
[afi
].export_vrf
);
3493 dir
= BGP_VPN_POLICY_DIR_FROMVPN
;
3494 if (bgp
->vpn_policy
[afi
].rtlist
[dir
])
3495 ecommunity_free(&bgp
->vpn_policy
[afi
].rtlist
[dir
]);
3496 dir
= BGP_VPN_POLICY_DIR_TOVPN
;
3497 if (bgp
->vpn_policy
[afi
].rtlist
[dir
])
3498 ecommunity_free(&bgp
->vpn_policy
[afi
].rtlist
[dir
]);
3501 XFREE(MTYPE_BGP
, bgp
->name
);
3502 XFREE(MTYPE_BGP
, bgp
->name_pretty
);
3504 XFREE(MTYPE_BGP
, bgp
);
3507 struct peer
*peer_lookup_by_conf_if(struct bgp
*bgp
, const char *conf_if
)
3510 struct listnode
*node
, *nnode
;
3516 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3517 if (peer
->conf_if
&& !strcmp(peer
->conf_if
, conf_if
)
3518 && !CHECK_FLAG(peer
->sflags
,
3519 PEER_STATUS_ACCEPT_PEER
))
3521 } else if (bm
->bgp
!= NULL
) {
3522 struct listnode
*bgpnode
, *nbgpnode
;
3524 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
))
3525 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3527 && !strcmp(peer
->conf_if
, conf_if
)
3528 && !CHECK_FLAG(peer
->sflags
,
3529 PEER_STATUS_ACCEPT_PEER
))
3535 struct peer
*peer_lookup_by_hostname(struct bgp
*bgp
, const char *hostname
)
3538 struct listnode
*node
, *nnode
;
3544 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3545 if (peer
->hostname
&& !strcmp(peer
->hostname
, hostname
)
3546 && !CHECK_FLAG(peer
->sflags
,
3547 PEER_STATUS_ACCEPT_PEER
))
3549 } else if (bm
->bgp
!= NULL
) {
3550 struct listnode
*bgpnode
, *nbgpnode
;
3552 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
))
3553 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3555 && !strcmp(peer
->hostname
, hostname
)
3556 && !CHECK_FLAG(peer
->sflags
,
3557 PEER_STATUS_ACCEPT_PEER
))
3563 struct peer
*peer_lookup(struct bgp
*bgp
, union sockunion
*su
)
3565 struct peer
*peer
= NULL
;
3566 struct peer tmp_peer
;
3568 memset(&tmp_peer
, 0, sizeof(struct peer
));
3571 * We do not want to find the doppelganger peer so search for the peer
3573 * the hash that has PEER_FLAG_CONFIG_NODE
3575 SET_FLAG(tmp_peer
.flags
, PEER_FLAG_CONFIG_NODE
);
3580 peer
= hash_lookup(bgp
->peerhash
, &tmp_peer
);
3581 } else if (bm
->bgp
!= NULL
) {
3582 struct listnode
*bgpnode
, *nbgpnode
;
3584 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
)) {
3585 peer
= hash_lookup(bgp
->peerhash
, &tmp_peer
);
3594 struct peer
*peer_create_bind_dynamic_neighbor(struct bgp
*bgp
,
3595 union sockunion
*su
,
3596 struct peer_group
*group
)
3602 /* Create peer first; we've already checked group config is valid. */
3603 peer
= peer_create(su
, NULL
, bgp
, bgp
->as
, group
->conf
->as
,
3604 group
->conf
->as_type
, 0, 0, group
);
3609 peer
= peer_lock(peer
);
3610 listnode_add(group
->peer
, peer
);
3612 peer_group2peer_config_copy(group
, peer
);
3615 * Bind peer for all AFs configured for the group. We don't call
3616 * peer_group_bind as that is sub-optimal and does some stuff we don't
3619 FOREACH_AFI_SAFI (afi
, safi
) {
3620 if (!group
->conf
->afc
[afi
][safi
])
3622 peer
->afc
[afi
][safi
] = 1;
3624 if (!peer_af_find(peer
, afi
, safi
))
3625 peer_af_create(peer
, afi
, safi
);
3627 peer_group2peer_config_copy_af(group
, peer
, afi
, safi
);
3630 /* Mark as dynamic, but also as a "config node" for other things to
3632 SET_FLAG(peer
->flags
, PEER_FLAG_DYNAMIC_NEIGHBOR
);
3633 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
3639 peer_group_lookup_dynamic_neighbor_range(struct peer_group
*group
,
3640 struct prefix
*prefix
)
3642 struct listnode
*node
, *nnode
;
3643 struct prefix
*range
;
3646 afi
= family2afi(prefix
->family
);
3648 if (group
->listen_range
[afi
])
3649 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
,
3651 if (prefix_match(range
, prefix
))
3658 peer_group_lookup_dynamic_neighbor(struct bgp
*bgp
, struct prefix
*prefix
,
3659 struct prefix
**listen_range
)
3661 struct prefix
*range
= NULL
;
3662 struct peer_group
*group
= NULL
;
3663 struct listnode
*node
, *nnode
;
3665 *listen_range
= NULL
;
3667 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
))
3668 if ((range
= peer_group_lookup_dynamic_neighbor_range(
3671 } else if (bm
->bgp
!= NULL
) {
3672 struct listnode
*bgpnode
, *nbgpnode
;
3674 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
))
3675 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
))
3676 if ((range
= peer_group_lookup_dynamic_neighbor_range(
3682 *listen_range
= range
;
3683 return (group
&& range
) ? group
: NULL
;
3686 struct peer
*peer_lookup_dynamic_neighbor(struct bgp
*bgp
, union sockunion
*su
)
3688 struct peer_group
*group
;
3691 struct prefix prefix
;
3692 struct prefix
*listen_range
;
3694 char buf
[PREFIX2STR_BUFFER
];
3695 char buf1
[PREFIX2STR_BUFFER
];
3697 sockunion2hostprefix(su
, &prefix
);
3699 /* See if incoming connection matches a configured listen range. */
3700 group
= peer_group_lookup_dynamic_neighbor(bgp
, &prefix
, &listen_range
);
3711 prefix2str(&prefix
, buf
, sizeof(buf
));
3712 prefix2str(listen_range
, buf1
, sizeof(buf1
));
3714 if (bgp_debug_neighbor_events(NULL
))
3716 "Dynamic Neighbor %s matches group %s listen range %s",
3717 buf
, group
->name
, buf1
);
3719 /* Are we within the listen limit? */
3720 dncount
= gbgp
->dynamic_neighbors_count
;
3722 if (dncount
>= gbgp
->dynamic_neighbors_limit
) {
3723 if (bgp_debug_neighbor_events(NULL
))
3724 zlog_debug("Dynamic Neighbor %s rejected - at limit %d",
3725 inet_sutop(su
, buf
),
3726 gbgp
->dynamic_neighbors_limit
);
3730 /* Ensure group is not disabled. */
3731 if (CHECK_FLAG(group
->conf
->flags
, PEER_FLAG_SHUTDOWN
)) {
3732 if (bgp_debug_neighbor_events(NULL
))
3734 "Dynamic Neighbor %s rejected - group %s disabled",
3739 /* Check that at least one AF is activated for the group. */
3740 if (!peer_group_af_configured(group
)) {
3741 if (bgp_debug_neighbor_events(NULL
))
3743 "Dynamic Neighbor %s rejected - no AF activated for group %s",
3748 /* Create dynamic peer and bind to associated group. */
3749 peer
= peer_create_bind_dynamic_neighbor(gbgp
, su
, group
);
3752 gbgp
->dynamic_neighbors_count
= ++dncount
;
3754 if (bgp_debug_neighbor_events(peer
))
3755 zlog_debug("%s Dynamic Neighbor added, group %s count %d",
3756 peer
->host
, group
->name
, dncount
);
3761 static void peer_drop_dynamic_neighbor(struct peer
*peer
)
3764 if (peer
->group
->bgp
) {
3765 dncount
= peer
->group
->bgp
->dynamic_neighbors_count
;
3767 peer
->group
->bgp
->dynamic_neighbors_count
= --dncount
;
3769 if (bgp_debug_neighbor_events(peer
))
3770 zlog_debug("%s dropped from group %s, count %d", peer
->host
,
3771 peer
->group
->name
, dncount
);
3774 /* If peer is configured at least one address family return 1. */
3775 bool peer_active(struct peer
*peer
)
3777 if (BGP_PEER_SU_UNSPEC(peer
))
3779 if (peer
->afc
[AFI_IP
][SAFI_UNICAST
] || peer
->afc
[AFI_IP
][SAFI_MULTICAST
]
3780 || peer
->afc
[AFI_IP
][SAFI_LABELED_UNICAST
]
3781 || peer
->afc
[AFI_IP
][SAFI_MPLS_VPN
] || peer
->afc
[AFI_IP
][SAFI_ENCAP
]
3782 || peer
->afc
[AFI_IP
][SAFI_FLOWSPEC
]
3783 || peer
->afc
[AFI_IP6
][SAFI_UNICAST
]
3784 || peer
->afc
[AFI_IP6
][SAFI_MULTICAST
]
3785 || peer
->afc
[AFI_IP6
][SAFI_LABELED_UNICAST
]
3786 || peer
->afc
[AFI_IP6
][SAFI_MPLS_VPN
]
3787 || peer
->afc
[AFI_IP6
][SAFI_ENCAP
]
3788 || peer
->afc
[AFI_IP6
][SAFI_FLOWSPEC
]
3789 || peer
->afc
[AFI_L2VPN
][SAFI_EVPN
])
3794 /* If peer is negotiated at least one address family return 1. */
3795 bool peer_active_nego(struct peer
*peer
)
3797 if (peer
->afc_nego
[AFI_IP
][SAFI_UNICAST
]
3798 || peer
->afc_nego
[AFI_IP
][SAFI_MULTICAST
]
3799 || peer
->afc_nego
[AFI_IP
][SAFI_LABELED_UNICAST
]
3800 || peer
->afc_nego
[AFI_IP
][SAFI_MPLS_VPN
]
3801 || peer
->afc_nego
[AFI_IP
][SAFI_ENCAP
]
3802 || peer
->afc_nego
[AFI_IP
][SAFI_FLOWSPEC
]
3803 || peer
->afc_nego
[AFI_IP6
][SAFI_UNICAST
]
3804 || peer
->afc_nego
[AFI_IP6
][SAFI_MULTICAST
]
3805 || peer
->afc_nego
[AFI_IP6
][SAFI_LABELED_UNICAST
]
3806 || peer
->afc_nego
[AFI_IP6
][SAFI_MPLS_VPN
]
3807 || peer
->afc_nego
[AFI_IP6
][SAFI_ENCAP
]
3808 || peer
->afc_nego
[AFI_IP6
][SAFI_FLOWSPEC
]
3809 || peer
->afc_nego
[AFI_L2VPN
][SAFI_EVPN
])
3814 void peer_change_action(struct peer
*peer
, afi_t afi
, safi_t safi
,
3815 enum peer_change_type type
)
3817 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
3820 if (peer
->status
!= Established
)
3823 if (type
== peer_change_reset
) {
3824 /* If we're resetting session, we've to delete both peer struct
3826 if ((peer
->doppelganger
)
3827 && (peer
->doppelganger
->status
!= Deleted
)
3828 && (!CHECK_FLAG(peer
->doppelganger
->flags
,
3829 PEER_FLAG_CONFIG_NODE
)))
3830 peer_delete(peer
->doppelganger
);
3832 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
3833 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
3834 } else if (type
== peer_change_reset_in
) {
3835 if (CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_OLD_RCV
)
3836 || CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_NEW_RCV
))
3837 bgp_route_refresh_send(peer
, afi
, safi
, 0, 0, 0);
3839 if ((peer
->doppelganger
)
3840 && (peer
->doppelganger
->status
!= Deleted
)
3841 && (!CHECK_FLAG(peer
->doppelganger
->flags
,
3842 PEER_FLAG_CONFIG_NODE
)))
3843 peer_delete(peer
->doppelganger
);
3845 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
3846 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
3848 } else if (type
== peer_change_reset_out
) {
3849 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
3850 bgp_announce_route(peer
, afi
, safi
);
3854 struct peer_flag_action
{
3858 /* This flag can be set for peer-group member. */
3859 uint8_t not_for_member
;
3861 /* Action when the flag is changed. */
3862 enum peer_change_type type
;
3865 static const struct peer_flag_action peer_flag_action_list
[] = {
3866 {PEER_FLAG_PASSIVE
, 0, peer_change_reset
},
3867 {PEER_FLAG_SHUTDOWN
, 0, peer_change_reset
},
3868 {PEER_FLAG_DONT_CAPABILITY
, 0, peer_change_none
},
3869 {PEER_FLAG_OVERRIDE_CAPABILITY
, 0, peer_change_none
},
3870 {PEER_FLAG_STRICT_CAP_MATCH
, 0, peer_change_none
},
3871 {PEER_FLAG_DYNAMIC_CAPABILITY
, 0, peer_change_reset
},
3872 {PEER_FLAG_DISABLE_CONNECTED_CHECK
, 0, peer_change_reset
},
3873 {PEER_FLAG_CAPABILITY_ENHE
, 0, peer_change_reset
},
3874 {PEER_FLAG_ENFORCE_FIRST_AS
, 0, peer_change_reset_in
},
3875 {PEER_FLAG_IFPEER_V6ONLY
, 0, peer_change_reset
},
3876 {PEER_FLAG_ROUTEADV
, 0, peer_change_none
},
3877 {PEER_FLAG_TIMER
, 0, peer_change_none
},
3878 {PEER_FLAG_TIMER_CONNECT
, 0, peer_change_none
},
3879 {PEER_FLAG_PASSWORD
, 0, peer_change_none
},
3880 {PEER_FLAG_LOCAL_AS
, 0, peer_change_none
},
3881 {PEER_FLAG_LOCAL_AS_NO_PREPEND
, 0, peer_change_none
},
3882 {PEER_FLAG_LOCAL_AS_REPLACE_AS
, 0, peer_change_none
},
3883 {PEER_FLAG_UPDATE_SOURCE
, 0, peer_change_none
},
3886 static const struct peer_flag_action peer_af_flag_action_list
[] = {
3887 {PEER_FLAG_SEND_COMMUNITY
, 1, peer_change_reset_out
},
3888 {PEER_FLAG_SEND_EXT_COMMUNITY
, 1, peer_change_reset_out
},
3889 {PEER_FLAG_SEND_LARGE_COMMUNITY
, 1, peer_change_reset_out
},
3890 {PEER_FLAG_NEXTHOP_SELF
, 1, peer_change_reset_out
},
3891 {PEER_FLAG_REFLECTOR_CLIENT
, 1, peer_change_reset
},
3892 {PEER_FLAG_RSERVER_CLIENT
, 1, peer_change_reset
},
3893 {PEER_FLAG_SOFT_RECONFIG
, 0, peer_change_reset_in
},
3894 {PEER_FLAG_AS_PATH_UNCHANGED
, 1, peer_change_reset_out
},
3895 {PEER_FLAG_NEXTHOP_UNCHANGED
, 1, peer_change_reset_out
},
3896 {PEER_FLAG_MED_UNCHANGED
, 1, peer_change_reset_out
},
3897 {PEER_FLAG_DEFAULT_ORIGINATE
, 0, peer_change_none
},
3898 {PEER_FLAG_REMOVE_PRIVATE_AS
, 1, peer_change_reset_out
},
3899 {PEER_FLAG_ALLOWAS_IN
, 0, peer_change_reset_in
},
3900 {PEER_FLAG_ALLOWAS_IN_ORIGIN
, 0, peer_change_reset_in
},
3901 {PEER_FLAG_ORF_PREFIX_SM
, 1, peer_change_reset
},
3902 {PEER_FLAG_ORF_PREFIX_RM
, 1, peer_change_reset
},
3903 {PEER_FLAG_MAX_PREFIX
, 0, peer_change_none
},
3904 {PEER_FLAG_MAX_PREFIX_WARNING
, 0, peer_change_none
},
3905 {PEER_FLAG_MAX_PREFIX_FORCE
, 0, peer_change_none
},
3906 {PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED
, 0, peer_change_reset_out
},
3907 {PEER_FLAG_FORCE_NEXTHOP_SELF
, 1, peer_change_reset_out
},
3908 {PEER_FLAG_REMOVE_PRIVATE_AS_ALL
, 1, peer_change_reset_out
},
3909 {PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE
, 1, peer_change_reset_out
},
3910 {PEER_FLAG_AS_OVERRIDE
, 1, peer_change_reset_out
},
3911 {PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE
, 1, peer_change_reset_out
},
3912 {PEER_FLAG_WEIGHT
, 0, peer_change_reset_in
},
3915 /* Proper action set. */
3916 static int peer_flag_action_set(const struct peer_flag_action
*action_list
,
3917 int size
, struct peer_flag_action
*action
,
3924 const struct peer_flag_action
*match
= NULL
;
3926 /* Check peer's frag action. */
3927 for (i
= 0; i
< size
; i
++) {
3928 match
= &action_list
[i
];
3930 if (match
->flag
== 0)
3933 if (match
->flag
& flag
) {
3936 if (match
->type
== peer_change_reset_in
)
3938 if (match
->type
== peer_change_reset_out
)
3940 if (match
->type
== peer_change_reset
) {
3944 if (match
->not_for_member
)
3945 action
->not_for_member
= 1;
3949 /* Set peer clear type. */
3950 if (reset_in
&& reset_out
)
3951 action
->type
= peer_change_reset
;
3953 action
->type
= peer_change_reset_in
;
3955 action
->type
= peer_change_reset_out
;
3957 action
->type
= peer_change_none
;
3962 static void peer_flag_modify_action(struct peer
*peer
, uint32_t flag
)
3964 if (flag
== PEER_FLAG_SHUTDOWN
) {
3965 if (CHECK_FLAG(peer
->flags
, flag
)) {
3966 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_NSF_WAIT
))
3967 peer_nsf_stop(peer
);
3969 UNSET_FLAG(peer
->sflags
, PEER_STATUS_PREFIX_OVERFLOW
);
3970 if (peer
->t_pmax_restart
) {
3971 BGP_TIMER_OFF(peer
->t_pmax_restart
);
3972 if (bgp_debug_neighbor_events(peer
))
3974 "%s Maximum-prefix restart timer canceled",
3978 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
3979 char *msg
= peer
->tx_shutdown_message
;
3982 if (!msg
&& peer_group_active(peer
))
3983 msg
= peer
->group
->conf
3984 ->tx_shutdown_message
;
3985 msglen
= msg
? strlen(msg
) : 0;
3990 uint8_t msgbuf
[129];
3993 memcpy(msgbuf
+ 1, msg
, msglen
);
3995 bgp_notify_send_with_data(
3996 peer
, BGP_NOTIFY_CEASE
,
3997 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
,
3998 msgbuf
, msglen
+ 1);
4001 peer
, BGP_NOTIFY_CEASE
,
4002 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
);
4004 bgp_session_reset(peer
);
4006 peer
->v_start
= BGP_INIT_START_TIMER
;
4007 BGP_EVENT_ADD(peer
, BGP_Stop
);
4009 } else if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
4010 if (flag
== PEER_FLAG_DYNAMIC_CAPABILITY
)
4011 peer
->last_reset
= PEER_DOWN_CAPABILITY_CHANGE
;
4012 else if (flag
== PEER_FLAG_PASSIVE
)
4013 peer
->last_reset
= PEER_DOWN_PASSIVE_CHANGE
;
4014 else if (flag
== PEER_FLAG_DISABLE_CONNECTED_CHECK
)
4015 peer
->last_reset
= PEER_DOWN_MULTIHOP_CHANGE
;
4017 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4018 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4020 bgp_session_reset(peer
);
4023 /* Change specified peer flag. */
4024 static int peer_flag_modify(struct peer
*peer
, uint32_t flag
, int set
)
4028 bool invert
, member_invert
;
4029 struct peer
*member
;
4030 struct listnode
*node
, *nnode
;
4031 struct peer_flag_action action
;
4033 memset(&action
, 0, sizeof(struct peer_flag_action
));
4034 size
= sizeof(peer_flag_action_list
) / sizeof(struct peer_flag_action
);
4036 invert
= CHECK_FLAG(peer
->flags_invert
, flag
);
4037 found
= peer_flag_action_set(peer_flag_action_list
, size
, &action
,
4040 /* Abort if no flag action exists. */
4042 return BGP_ERR_INVALID_FLAG
;
4044 /* Check for flag conflict: STRICT_CAP_MATCH && OVERRIDE_CAPABILITY */
4045 if (set
&& CHECK_FLAG(peer
->flags
| flag
, PEER_FLAG_STRICT_CAP_MATCH
)
4046 && CHECK_FLAG(peer
->flags
| flag
, PEER_FLAG_OVERRIDE_CAPABILITY
))
4047 return BGP_ERR_PEER_FLAG_CONFLICT
;
4049 /* Handle flag updates where desired state matches current state. */
4050 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4051 if (set
&& CHECK_FLAG(peer
->flags
, flag
)) {
4052 COND_FLAG(peer
->flags_override
, flag
, !invert
);
4056 if (!set
&& !CHECK_FLAG(peer
->flags
, flag
)) {
4057 COND_FLAG(peer
->flags_override
, flag
, invert
);
4062 /* Inherit from peer-group or set/unset flags accordingly. */
4063 if (peer_group_active(peer
) && set
== invert
)
4064 peer_flag_inherit(peer
, flag
);
4066 COND_FLAG(peer
->flags
, flag
, set
);
4068 /* Check if handling a regular peer. */
4069 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4070 /* Update flag override state accordingly. */
4071 COND_FLAG(peer
->flags_override
, flag
, set
!= invert
);
4074 * For the extended next-hop encoding flag we need to turn RAs
4075 * on if flag is being set, but only turn RAs off if the flag
4076 * is being unset on this peer and if this peer is a member of a
4077 * peer-group, the peer-group also doesn't have the flag set.
4079 if (flag
== PEER_FLAG_CAPABILITY_ENHE
) {
4081 bgp_zebra_initiate_radv(peer
->bgp
, peer
);
4082 } else if (peer_group_active(peer
)) {
4083 if (!CHECK_FLAG(peer
->group
->conf
->flags
, flag
))
4084 bgp_zebra_terminate_radv(peer
->bgp
,
4087 bgp_zebra_terminate_radv(peer
->bgp
, peer
);
4090 /* Execute flag action on peer. */
4091 if (action
.type
== peer_change_reset
)
4092 peer_flag_modify_action(peer
, flag
);
4094 /* Skip peer-group mechanics for regular peers. */
4099 * Update peer-group members, unless they are explicitely overriding
4100 * peer-group configuration.
4102 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4103 /* Skip peers with overridden configuration. */
4104 if (CHECK_FLAG(member
->flags_override
, flag
))
4107 /* Check if only member without group is inverted. */
4109 CHECK_FLAG(member
->flags_invert
, flag
) && !invert
;
4111 /* Skip peers with equivalent configuration. */
4112 if (set
!= member_invert
&& CHECK_FLAG(member
->flags
, flag
))
4115 if (set
== member_invert
&& !CHECK_FLAG(member
->flags
, flag
))
4118 /* Update flag on peer-group member. */
4119 COND_FLAG(member
->flags
, flag
, set
!= member_invert
);
4121 if (flag
== PEER_FLAG_CAPABILITY_ENHE
)
4122 set
? bgp_zebra_initiate_radv(member
->bgp
, member
)
4123 : bgp_zebra_terminate_radv(member
->bgp
, member
);
4125 /* Execute flag action on peer-group member. */
4126 if (action
.type
== peer_change_reset
)
4127 peer_flag_modify_action(member
, flag
);
4133 int peer_flag_set(struct peer
*peer
, uint32_t flag
)
4135 return peer_flag_modify(peer
, flag
, 1);
4138 int peer_flag_unset(struct peer
*peer
, uint32_t flag
)
4140 return peer_flag_modify(peer
, flag
, 0);
4143 static int peer_af_flag_modify(struct peer
*peer
, afi_t afi
, safi_t safi
,
4144 uint32_t flag
, bool set
)
4148 bool invert
, member_invert
;
4149 struct peer
*member
;
4150 struct listnode
*node
, *nnode
;
4151 struct peer_flag_action action
;
4152 bgp_peer_sort_t ptype
;
4154 memset(&action
, 0, sizeof(struct peer_flag_action
));
4155 size
= sizeof(peer_af_flag_action_list
)
4156 / sizeof(struct peer_flag_action
);
4158 invert
= CHECK_FLAG(peer
->af_flags_invert
[afi
][safi
], flag
);
4159 found
= peer_flag_action_set(peer_af_flag_action_list
, size
, &action
,
4162 /* Abort if flag action exists. */
4164 return BGP_ERR_INVALID_FLAG
;
4166 ptype
= peer_sort(peer
);
4167 /* Special check for reflector client. */
4168 if (flag
& PEER_FLAG_REFLECTOR_CLIENT
&& ptype
!= BGP_PEER_IBGP
)
4169 return BGP_ERR_NOT_INTERNAL_PEER
;
4171 /* Special check for remove-private-AS. */
4172 if (flag
& PEER_FLAG_REMOVE_PRIVATE_AS
&& ptype
== BGP_PEER_IBGP
)
4173 return BGP_ERR_REMOVE_PRIVATE_AS
;
4175 /* as-override is not allowed for IBGP peers */
4176 if (flag
& PEER_FLAG_AS_OVERRIDE
&& ptype
== BGP_PEER_IBGP
)
4177 return BGP_ERR_AS_OVERRIDE
;
4179 /* Handle flag updates where desired state matches current state. */
4180 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4181 if (set
&& CHECK_FLAG(peer
->af_flags
[afi
][safi
], flag
)) {
4182 COND_FLAG(peer
->af_flags_override
[afi
][safi
], flag
,
4187 if (!set
&& !CHECK_FLAG(peer
->af_flags
[afi
][safi
], flag
)) {
4188 COND_FLAG(peer
->af_flags_override
[afi
][safi
], flag
,
4195 * For EVPN we implicitly set the NEXTHOP_UNCHANGED flag,
4196 * if we are setting/unsetting flags which conflict with this flag
4197 * handle accordingly
4199 if (afi
== AFI_L2VPN
&& safi
== SAFI_EVPN
) {
4203 * if we are setting NEXTHOP_SELF, we need to unset the
4204 * NEXTHOP_UNCHANGED flag
4206 if (CHECK_FLAG(flag
, PEER_FLAG_NEXTHOP_SELF
) ||
4207 CHECK_FLAG(flag
, PEER_FLAG_FORCE_NEXTHOP_SELF
))
4208 UNSET_FLAG(peer
->af_flags
[afi
][safi
],
4209 PEER_FLAG_NEXTHOP_UNCHANGED
);
4213 * if we are unsetting NEXTHOP_SELF, we need to set the
4214 * NEXTHOP_UNCHANGED flag to reset the defaults for EVPN
4216 if (CHECK_FLAG(flag
, PEER_FLAG_NEXTHOP_SELF
) ||
4217 CHECK_FLAG(flag
, PEER_FLAG_FORCE_NEXTHOP_SELF
))
4218 SET_FLAG(peer
->af_flags
[afi
][safi
],
4219 PEER_FLAG_NEXTHOP_UNCHANGED
);
4224 * If the peer is a route server client let's not
4225 * muck with the nexthop on the way out the door
4227 if (flag
& PEER_FLAG_RSERVER_CLIENT
) {
4229 SET_FLAG(peer
->af_flags
[afi
][safi
],
4230 PEER_FLAG_NEXTHOP_UNCHANGED
);
4232 UNSET_FLAG(peer
->af_flags
[afi
][safi
],
4233 PEER_FLAG_NEXTHOP_UNCHANGED
);
4236 /* Inherit from peer-group or set/unset flags accordingly. */
4237 if (peer_group_active(peer
) && set
== invert
)
4238 peer_af_flag_inherit(peer
, afi
, safi
, flag
);
4240 COND_FLAG(peer
->af_flags
[afi
][safi
], flag
, set
);
4242 /* Execute action when peer is established. */
4243 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)
4244 && peer
->status
== Established
) {
4245 if (!set
&& flag
== PEER_FLAG_SOFT_RECONFIG
)
4246 bgp_clear_adj_in(peer
, afi
, safi
);
4248 if (flag
== PEER_FLAG_REFLECTOR_CLIENT
)
4249 peer
->last_reset
= PEER_DOWN_RR_CLIENT_CHANGE
;
4250 else if (flag
== PEER_FLAG_RSERVER_CLIENT
)
4251 peer
->last_reset
= PEER_DOWN_RS_CLIENT_CHANGE
;
4252 else if (flag
== PEER_FLAG_ORF_PREFIX_SM
)
4253 peer
->last_reset
= PEER_DOWN_CAPABILITY_CHANGE
;
4254 else if (flag
== PEER_FLAG_ORF_PREFIX_RM
)
4255 peer
->last_reset
= PEER_DOWN_CAPABILITY_CHANGE
;
4257 peer_change_action(peer
, afi
, safi
, action
.type
);
4261 /* Check if handling a regular peer. */
4262 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4263 COND_FLAG(peer
->af_flags_override
[afi
][safi
], flag
,
4267 * Update peer-group members, unless they are explicitely
4268 * overriding peer-group configuration.
4270 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
,
4272 /* Skip peers with overridden configuration. */
4273 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
4277 /* Check if only member without group is inverted. */
4279 CHECK_FLAG(member
->af_flags_invert
[afi
][safi
],
4283 /* Skip peers with equivalent configuration. */
4284 if (set
!= member_invert
4285 && CHECK_FLAG(member
->af_flags
[afi
][safi
], flag
))
4288 if (set
== member_invert
4289 && !CHECK_FLAG(member
->af_flags
[afi
][safi
], flag
))
4292 /* Update flag on peer-group member. */
4293 COND_FLAG(member
->af_flags
[afi
][safi
], flag
,
4294 set
!= member_invert
);
4296 /* Execute flag action on peer-group member. */
4297 if (member
->status
== Established
) {
4298 if (!set
&& flag
== PEER_FLAG_SOFT_RECONFIG
)
4299 bgp_clear_adj_in(member
, afi
, safi
);
4301 if (flag
== PEER_FLAG_REFLECTOR_CLIENT
)
4302 member
->last_reset
=
4303 PEER_DOWN_RR_CLIENT_CHANGE
;
4305 == PEER_FLAG_RSERVER_CLIENT
)
4306 member
->last_reset
=
4307 PEER_DOWN_RS_CLIENT_CHANGE
;
4309 == PEER_FLAG_ORF_PREFIX_SM
)
4310 member
->last_reset
=
4311 PEER_DOWN_CAPABILITY_CHANGE
;
4313 == PEER_FLAG_ORF_PREFIX_RM
)
4314 member
->last_reset
=
4315 PEER_DOWN_CAPABILITY_CHANGE
;
4317 peer_change_action(member
, afi
, safi
,
4327 int peer_af_flag_set(struct peer
*peer
, afi_t afi
, safi_t safi
, uint32_t flag
)
4329 return peer_af_flag_modify(peer
, afi
, safi
, flag
, 1);
4332 int peer_af_flag_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, uint32_t flag
)
4334 return peer_af_flag_modify(peer
, afi
, safi
, flag
, 0);
4338 void peer_tx_shutdown_message_set(struct peer
*peer
, const char *msg
)
4340 XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG
, peer
->tx_shutdown_message
);
4341 peer
->tx_shutdown_message
=
4342 msg
? XSTRDUP(MTYPE_PEER_TX_SHUTDOWN_MSG
, msg
) : NULL
;
4345 void peer_tx_shutdown_message_unset(struct peer
*peer
)
4347 XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG
, peer
->tx_shutdown_message
);
4351 /* EBGP multihop configuration. */
4352 int peer_ebgp_multihop_set(struct peer
*peer
, int ttl
)
4354 struct peer_group
*group
;
4355 struct listnode
*node
, *nnode
;
4358 if (peer
->sort
== BGP_PEER_IBGP
|| peer
->conf_if
)
4361 /* see comment in peer_ttl_security_hops_set() */
4362 if (ttl
!= MAXTTL
) {
4363 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4364 group
= peer
->group
;
4365 if (group
->conf
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
)
4366 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4368 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
,
4370 if (peer1
->sort
== BGP_PEER_IBGP
)
4373 if (peer1
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
)
4374 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4377 if (peer
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
)
4378 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4384 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4385 if (peer
->fd
>= 0 && peer
->sort
!= BGP_PEER_IBGP
) {
4386 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4387 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4388 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4390 bgp_session_reset(peer
);
4393 group
= peer
->group
;
4394 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
4395 if (peer
->sort
== BGP_PEER_IBGP
)
4398 peer
->ttl
= group
->conf
->ttl
;
4400 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4401 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4402 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4404 bgp_session_reset(peer
);
4410 int peer_ebgp_multihop_unset(struct peer
*peer
)
4412 struct peer_group
*group
;
4413 struct listnode
*node
, *nnode
;
4415 if (peer
->sort
== BGP_PEER_IBGP
)
4418 if (peer
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
&& peer
->ttl
!= MAXTTL
)
4419 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4421 if (peer_group_active(peer
))
4422 peer
->ttl
= peer
->group
->conf
->ttl
;
4424 peer
->ttl
= BGP_DEFAULT_TTL
;
4426 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4427 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4428 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4429 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4431 bgp_session_reset(peer
);
4433 group
= peer
->group
;
4434 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
4435 if (peer
->sort
== BGP_PEER_IBGP
)
4438 peer
->ttl
= BGP_DEFAULT_TTL
;
4440 if (peer
->fd
>= 0) {
4441 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4443 peer
, BGP_NOTIFY_CEASE
,
4444 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4446 bgp_session_reset(peer
);
4453 /* Neighbor description. */
4454 void peer_description_set(struct peer
*peer
, const char *desc
)
4456 XFREE(MTYPE_PEER_DESC
, peer
->desc
);
4458 peer
->desc
= XSTRDUP(MTYPE_PEER_DESC
, desc
);
4461 void peer_description_unset(struct peer
*peer
)
4463 XFREE(MTYPE_PEER_DESC
, peer
->desc
);
4466 /* Neighbor update-source. */
4467 int peer_update_source_if_set(struct peer
*peer
, const char *ifname
)
4469 struct peer
*member
;
4470 struct listnode
*node
, *nnode
;
4472 /* Set flag and configuration on peer. */
4473 peer_flag_set(peer
, PEER_FLAG_UPDATE_SOURCE
);
4474 if (peer
->update_if
) {
4475 if (strcmp(peer
->update_if
, ifname
) == 0)
4477 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
4479 peer
->update_if
= XSTRDUP(MTYPE_PEER_UPDATE_SOURCE
, ifname
);
4480 sockunion_free(peer
->update_source
);
4481 peer
->update_source
= NULL
;
4483 /* Check if handling a regular peer. */
4484 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4485 /* Send notification or reset peer depending on state. */
4486 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
4487 peer
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
4488 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4489 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4491 bgp_session_reset(peer
);
4493 /* Skip peer-group mechanics for regular peers. */
4498 * Set flag and configuration on all peer-group members, unless they are
4499 * explicitely overriding peer-group configuration.
4501 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4502 /* Skip peers with overridden configuration. */
4503 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_UPDATE_SOURCE
))
4506 /* Skip peers with the same configuration. */
4507 if (member
->update_if
) {
4508 if (strcmp(member
->update_if
, ifname
) == 0)
4510 XFREE(MTYPE_PEER_UPDATE_SOURCE
, member
->update_if
);
4513 /* Set flag and configuration on peer-group member. */
4514 SET_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
);
4515 member
->update_if
= XSTRDUP(MTYPE_PEER_UPDATE_SOURCE
, ifname
);
4516 sockunion_free(member
->update_source
);
4517 member
->update_source
= NULL
;
4519 /* Send notification or reset peer depending on state. */
4520 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
4521 member
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
4522 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
4523 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4525 bgp_session_reset(member
);
4531 int peer_update_source_addr_set(struct peer
*peer
, const union sockunion
*su
)
4533 struct peer
*member
;
4534 struct listnode
*node
, *nnode
;
4536 /* Set flag and configuration on peer. */
4537 peer_flag_set(peer
, PEER_FLAG_UPDATE_SOURCE
);
4538 if (peer
->update_source
) {
4539 if (sockunion_cmp(peer
->update_source
, su
) == 0)
4541 sockunion_free(peer
->update_source
);
4543 peer
->update_source
= sockunion_dup(su
);
4544 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
4546 /* Check if handling a regular peer. */
4547 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4548 /* Send notification or reset peer depending on state. */
4549 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
4550 peer
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
4551 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4552 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4554 bgp_session_reset(peer
);
4556 /* Skip peer-group mechanics for regular peers. */
4561 * Set flag and configuration on all peer-group members, unless they are
4562 * explicitely overriding peer-group configuration.
4564 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4565 /* Skip peers with overridden configuration. */
4566 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_UPDATE_SOURCE
))
4569 /* Skip peers with the same configuration. */
4570 if (member
->update_source
) {
4571 if (sockunion_cmp(member
->update_source
, su
) == 0)
4573 sockunion_free(member
->update_source
);
4576 /* Set flag and configuration on peer-group member. */
4577 SET_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
);
4578 member
->update_source
= sockunion_dup(su
);
4579 XFREE(MTYPE_PEER_UPDATE_SOURCE
, member
->update_if
);
4581 /* Send notification or reset peer depending on state. */
4582 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
4583 member
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
4584 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
4585 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4587 bgp_session_reset(member
);
4593 int peer_update_source_unset(struct peer
*peer
)
4595 struct peer
*member
;
4596 struct listnode
*node
, *nnode
;
4598 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_UPDATE_SOURCE
))
4601 /* Inherit configuration from peer-group if peer is member. */
4602 if (peer_group_active(peer
)) {
4603 peer_flag_inherit(peer
, PEER_FLAG_UPDATE_SOURCE
);
4604 PEER_SU_ATTR_INHERIT(peer
, peer
->group
, update_source
);
4605 PEER_STR_ATTR_INHERIT(peer
, peer
->group
, update_if
,
4606 MTYPE_PEER_UPDATE_SOURCE
);
4608 /* Otherwise remove flag and configuration from peer. */
4609 peer_flag_unset(peer
, PEER_FLAG_UPDATE_SOURCE
);
4610 sockunion_free(peer
->update_source
);
4611 peer
->update_source
= NULL
;
4612 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
4615 /* Check if handling a regular peer. */
4616 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4617 /* Send notification or reset peer depending on state. */
4618 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
4619 peer
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
4620 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4621 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4623 bgp_session_reset(peer
);
4625 /* Skip peer-group mechanics for regular peers. */
4630 * Set flag and configuration on all peer-group members, unless they are
4631 * explicitely overriding peer-group configuration.
4633 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4634 /* Skip peers with overridden configuration. */
4635 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_UPDATE_SOURCE
))
4638 /* Skip peers with the same configuration. */
4639 if (!CHECK_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
)
4640 && !member
->update_source
&& !member
->update_if
)
4643 /* Remove flag and configuration on peer-group member. */
4644 UNSET_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
);
4645 sockunion_free(member
->update_source
);
4646 member
->update_source
= NULL
;
4647 XFREE(MTYPE_PEER_UPDATE_SOURCE
, member
->update_if
);
4649 /* Send notification or reset peer depending on state. */
4650 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
4651 member
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
4652 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
4653 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4655 bgp_session_reset(member
);
4661 int peer_default_originate_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
4662 const char *rmap
, struct route_map
*route_map
)
4664 struct peer
*member
;
4665 struct listnode
*node
, *nnode
;
4667 /* Set flag and configuration on peer. */
4668 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_DEFAULT_ORIGINATE
);
4670 if (!peer
->default_rmap
[afi
][safi
].name
4671 || strcmp(rmap
, peer
->default_rmap
[afi
][safi
].name
) != 0) {
4672 if (peer
->default_rmap
[afi
][safi
].name
)
4673 XFREE(MTYPE_ROUTE_MAP_NAME
,
4674 peer
->default_rmap
[afi
][safi
].name
);
4676 route_map_counter_decrement(peer
->default_rmap
[afi
][safi
].map
);
4677 peer
->default_rmap
[afi
][safi
].name
=
4678 XSTRDUP(MTYPE_ROUTE_MAP_NAME
, rmap
);
4679 peer
->default_rmap
[afi
][safi
].map
= route_map
;
4680 route_map_counter_increment(route_map
);
4683 if (peer
->default_rmap
[afi
][safi
].name
)
4684 XFREE(MTYPE_ROUTE_MAP_NAME
,
4685 peer
->default_rmap
[afi
][safi
].name
);
4687 route_map_counter_decrement(peer
->default_rmap
[afi
][safi
].map
);
4688 peer
->default_rmap
[afi
][safi
].name
= NULL
;
4689 peer
->default_rmap
[afi
][safi
].map
= NULL
;
4692 /* Check if handling a regular peer. */
4693 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4694 /* Update peer route announcements. */
4695 if (peer
->status
== Established
&& peer
->afc_nego
[afi
][safi
]) {
4696 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
4697 bgp_default_originate(peer
, afi
, safi
, 0);
4698 bgp_announce_route(peer
, afi
, safi
);
4701 /* Skip peer-group mechanics for regular peers. */
4706 * Set flag and configuration on all peer-group members, unless they are
4707 * explicitely overriding peer-group configuration.
4709 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4710 /* Skip peers with overridden configuration. */
4711 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
4712 PEER_FLAG_DEFAULT_ORIGINATE
))
4715 /* Set flag and configuration on peer-group member. */
4716 SET_FLAG(member
->af_flags
[afi
][safi
],
4717 PEER_FLAG_DEFAULT_ORIGINATE
);
4719 if (member
->default_rmap
[afi
][safi
].name
)
4720 XFREE(MTYPE_ROUTE_MAP_NAME
,
4721 member
->default_rmap
[afi
][safi
].name
);
4722 route_map_counter_decrement(
4723 member
->default_rmap
[afi
][safi
].map
);
4724 member
->default_rmap
[afi
][safi
].name
=
4725 XSTRDUP(MTYPE_ROUTE_MAP_NAME
, rmap
);
4726 member
->default_rmap
[afi
][safi
].map
= route_map
;
4727 route_map_counter_increment(route_map
);
4730 /* Update peer route announcements. */
4731 if (member
->status
== Established
4732 && member
->afc_nego
[afi
][safi
]) {
4733 update_group_adjust_peer(
4734 peer_af_find(member
, afi
, safi
));
4735 bgp_default_originate(member
, afi
, safi
, 0);
4736 bgp_announce_route(member
, afi
, safi
);
4743 int peer_default_originate_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
4745 struct peer
*member
;
4746 struct listnode
*node
, *nnode
;
4748 /* Inherit configuration from peer-group if peer is member. */
4749 if (peer_group_active(peer
)) {
4750 peer_af_flag_inherit(peer
, afi
, safi
,
4751 PEER_FLAG_DEFAULT_ORIGINATE
);
4752 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
4753 default_rmap
[afi
][safi
].name
,
4754 MTYPE_ROUTE_MAP_NAME
);
4755 PEER_ATTR_INHERIT(peer
, peer
->group
,
4756 default_rmap
[afi
][safi
].map
);
4758 /* Otherwise remove flag and configuration from peer. */
4759 peer_af_flag_unset(peer
, afi
, safi
,
4760 PEER_FLAG_DEFAULT_ORIGINATE
);
4761 if (peer
->default_rmap
[afi
][safi
].name
)
4762 XFREE(MTYPE_ROUTE_MAP_NAME
,
4763 peer
->default_rmap
[afi
][safi
].name
);
4764 route_map_counter_decrement(peer
->default_rmap
[afi
][safi
].map
);
4765 peer
->default_rmap
[afi
][safi
].name
= NULL
;
4766 peer
->default_rmap
[afi
][safi
].map
= NULL
;
4769 /* Check if handling a regular peer. */
4770 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4771 /* Update peer route announcements. */
4772 if (peer
->status
== Established
&& peer
->afc_nego
[afi
][safi
]) {
4773 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
4774 bgp_default_originate(peer
, afi
, safi
, 1);
4775 bgp_announce_route(peer
, afi
, safi
);
4778 /* Skip peer-group mechanics for regular peers. */
4783 * Remove flag and configuration from all peer-group members, unless
4784 * they are explicitely overriding peer-group configuration.
4786 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4787 /* Skip peers with overridden configuration. */
4788 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
4789 PEER_FLAG_DEFAULT_ORIGINATE
))
4792 /* Remove flag and configuration on peer-group member. */
4793 UNSET_FLAG(peer
->af_flags
[afi
][safi
],
4794 PEER_FLAG_DEFAULT_ORIGINATE
);
4795 if (peer
->default_rmap
[afi
][safi
].name
)
4796 XFREE(MTYPE_ROUTE_MAP_NAME
,
4797 peer
->default_rmap
[afi
][safi
].name
);
4798 route_map_counter_decrement(peer
->default_rmap
[afi
][safi
].map
);
4799 peer
->default_rmap
[afi
][safi
].name
= NULL
;
4800 peer
->default_rmap
[afi
][safi
].map
= NULL
;
4802 /* Update peer route announcements. */
4803 if (peer
->status
== Established
&& peer
->afc_nego
[afi
][safi
]) {
4804 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
4805 bgp_default_originate(peer
, afi
, safi
, 1);
4806 bgp_announce_route(peer
, afi
, safi
);
4813 void peer_port_set(struct peer
*peer
, uint16_t port
)
4818 void peer_port_unset(struct peer
*peer
)
4820 peer
->port
= BGP_PORT_DEFAULT
;
4824 * Helper function that is called after the name of the policy
4825 * being used by a peer has changed (AF specific). Automatically
4826 * initiates inbound or outbound processing as needed.
4828 static void peer_on_policy_change(struct peer
*peer
, afi_t afi
, safi_t safi
,
4832 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
4833 if (peer
->status
== Established
)
4834 bgp_announce_route(peer
, afi
, safi
);
4836 if (peer
->status
!= Established
)
4839 if (CHECK_FLAG(peer
->af_flags
[afi
][safi
],
4840 PEER_FLAG_SOFT_RECONFIG
))
4841 bgp_soft_reconfig_in(peer
, afi
, safi
);
4842 else if (CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_OLD_RCV
)
4843 || CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_NEW_RCV
))
4844 bgp_route_refresh_send(peer
, afi
, safi
, 0, 0, 0);
4849 /* neighbor weight. */
4850 int peer_weight_set(struct peer
*peer
, afi_t afi
, safi_t safi
, uint16_t weight
)
4852 struct peer
*member
;
4853 struct listnode
*node
, *nnode
;
4855 /* Set flag and configuration on peer. */
4856 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_WEIGHT
);
4857 if (peer
->weight
[afi
][safi
] != weight
) {
4858 peer
->weight
[afi
][safi
] = weight
;
4859 peer_on_policy_change(peer
, afi
, safi
, 0);
4862 /* Skip peer-group mechanics for regular peers. */
4863 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
4867 * Set flag and configuration on all peer-group members, unless they are
4868 * explicitely overriding peer-group configuration.
4870 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4871 /* Skip peers with overridden configuration. */
4872 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
4876 /* Set flag and configuration on peer-group member. */
4877 SET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
);
4878 if (member
->weight
[afi
][safi
] != weight
) {
4879 member
->weight
[afi
][safi
] = weight
;
4880 peer_on_policy_change(member
, afi
, safi
, 0);
4887 int peer_weight_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
4889 struct peer
*member
;
4890 struct listnode
*node
, *nnode
;
4892 if (!CHECK_FLAG(peer
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
))
4895 /* Inherit configuration from peer-group if peer is member. */
4896 if (peer_group_active(peer
)) {
4897 peer_af_flag_inherit(peer
, afi
, safi
, PEER_FLAG_WEIGHT
);
4898 PEER_ATTR_INHERIT(peer
, peer
->group
, weight
[afi
][safi
]);
4900 peer_on_policy_change(peer
, afi
, safi
, 0);
4904 /* Remove flag and configuration from peer. */
4905 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_WEIGHT
);
4906 peer
->weight
[afi
][safi
] = 0;
4907 peer_on_policy_change(peer
, afi
, safi
, 0);
4909 /* Skip peer-group mechanics for regular peers. */
4910 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
4914 * Remove flag and configuration from all peer-group members, unless
4915 * they are explicitely overriding peer-group configuration.
4917 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4918 /* Skip peers with overridden configuration. */
4919 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
4923 /* Skip peers where flag is already disabled. */
4924 if (!CHECK_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
))
4927 /* Remove flag and configuration on peer-group member. */
4928 UNSET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
);
4929 member
->weight
[afi
][safi
] = 0;
4930 peer_on_policy_change(member
, afi
, safi
, 0);
4936 int peer_timers_set(struct peer
*peer
, uint32_t keepalive
, uint32_t holdtime
)
4938 struct peer
*member
;
4939 struct listnode
*node
, *nnode
;
4941 if (keepalive
> 65535)
4942 return BGP_ERR_INVALID_VALUE
;
4944 if (holdtime
> 65535)
4945 return BGP_ERR_INVALID_VALUE
;
4947 if (holdtime
< 3 && holdtime
!= 0)
4948 return BGP_ERR_INVALID_VALUE
;
4950 /* Set flag and configuration on peer. */
4951 peer_flag_set(peer
, PEER_FLAG_TIMER
);
4952 peer
->holdtime
= holdtime
;
4953 peer
->keepalive
= (keepalive
< holdtime
/ 3 ? keepalive
: holdtime
/ 3);
4955 /* Skip peer-group mechanics for regular peers. */
4956 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
4960 * Set flag and configuration on all peer-group members, unless they are
4961 * explicitely overriding peer-group configuration.
4963 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4964 /* Skip peers with overridden configuration. */
4965 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_TIMER
))
4968 /* Set flag and configuration on peer-group member. */
4969 SET_FLAG(member
->flags
, PEER_FLAG_TIMER
);
4970 PEER_ATTR_INHERIT(peer
, peer
->group
, holdtime
);
4971 PEER_ATTR_INHERIT(peer
, peer
->group
, keepalive
);
4977 int peer_timers_unset(struct peer
*peer
)
4979 struct peer
*member
;
4980 struct listnode
*node
, *nnode
;
4982 /* Inherit configuration from peer-group if peer is member. */
4983 if (peer_group_active(peer
)) {
4984 peer_flag_inherit(peer
, PEER_FLAG_TIMER
);
4985 PEER_ATTR_INHERIT(peer
, peer
->group
, holdtime
);
4986 PEER_ATTR_INHERIT(peer
, peer
->group
, keepalive
);
4988 /* Otherwise remove flag and configuration from peer. */
4989 peer_flag_unset(peer
, PEER_FLAG_TIMER
);
4991 peer
->keepalive
= 0;
4994 /* Skip peer-group mechanics for regular peers. */
4995 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
4999 * Remove flag and configuration from all peer-group members, unless
5000 * they are explicitely overriding peer-group configuration.
5002 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5003 /* Skip peers with overridden configuration. */
5004 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_TIMER
))
5007 /* Remove flag and configuration on peer-group member. */
5008 UNSET_FLAG(member
->flags
, PEER_FLAG_TIMER
);
5009 member
->holdtime
= 0;
5010 member
->keepalive
= 0;
5016 int peer_timers_connect_set(struct peer
*peer
, uint32_t connect
)
5018 struct peer
*member
;
5019 struct listnode
*node
, *nnode
;
5021 if (connect
> 65535)
5022 return BGP_ERR_INVALID_VALUE
;
5024 /* Set flag and configuration on peer. */
5025 peer_flag_set(peer
, PEER_FLAG_TIMER_CONNECT
);
5026 peer
->connect
= connect
;
5027 peer
->v_connect
= connect
;
5029 /* Skip peer-group mechanics for regular peers. */
5030 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5034 * Set flag and configuration on all peer-group members, unless they are
5035 * explicitely overriding peer-group configuration.
5037 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5038 /* Skip peers with overridden configuration. */
5039 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_TIMER_CONNECT
))
5042 /* Set flag and configuration on peer-group member. */
5043 SET_FLAG(member
->flags
, PEER_FLAG_TIMER_CONNECT
);
5044 member
->connect
= connect
;
5045 member
->v_connect
= connect
;
5051 int peer_timers_connect_unset(struct peer
*peer
)
5053 struct peer
*member
;
5054 struct listnode
*node
, *nnode
;
5056 /* Inherit configuration from peer-group if peer is member. */
5057 if (peer_group_active(peer
)) {
5058 peer_flag_inherit(peer
, PEER_FLAG_TIMER_CONNECT
);
5059 PEER_ATTR_INHERIT(peer
, peer
->group
, connect
);
5061 /* Otherwise remove flag and configuration from peer. */
5062 peer_flag_unset(peer
, PEER_FLAG_TIMER_CONNECT
);
5066 /* Set timer with fallback to default value. */
5068 peer
->v_connect
= peer
->connect
;
5070 peer
->v_connect
= peer
->bgp
->default_connect_retry
;
5072 /* Skip peer-group mechanics for regular peers. */
5073 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5077 * Remove flag and configuration from all peer-group members, unless
5078 * they are explicitely overriding peer-group configuration.
5080 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5081 /* Skip peers with overridden configuration. */
5082 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_TIMER_CONNECT
))
5085 /* Remove flag and configuration on peer-group member. */
5086 UNSET_FLAG(member
->flags
, PEER_FLAG_TIMER_CONNECT
);
5087 member
->connect
= 0;
5088 member
->v_connect
= peer
->bgp
->default_connect_retry
;
5094 int peer_advertise_interval_set(struct peer
*peer
, uint32_t routeadv
)
5096 struct peer
*member
;
5097 struct listnode
*node
, *nnode
;
5100 return BGP_ERR_INVALID_VALUE
;
5102 /* Set flag and configuration on peer. */
5103 peer_flag_set(peer
, PEER_FLAG_ROUTEADV
);
5104 peer
->routeadv
= routeadv
;
5105 peer
->v_routeadv
= routeadv
;
5107 /* Check if handling a regular peer. */
5108 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5109 /* Update peer route announcements. */
5110 update_group_adjust_peer_afs(peer
);
5111 if (peer
->status
== Established
)
5112 bgp_announce_route_all(peer
);
5114 /* Skip peer-group mechanics for regular peers. */
5119 * Set flag and configuration on all peer-group members, unless they are
5120 * explicitely overriding peer-group configuration.
5122 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5123 /* Skip peers with overridden configuration. */
5124 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_ROUTEADV
))
5127 /* Set flag and configuration on peer-group member. */
5128 SET_FLAG(member
->flags
, PEER_FLAG_ROUTEADV
);
5129 member
->routeadv
= routeadv
;
5130 member
->v_routeadv
= routeadv
;
5132 /* Update peer route announcements. */
5133 update_group_adjust_peer_afs(member
);
5134 if (member
->status
== Established
)
5135 bgp_announce_route_all(member
);
5141 int peer_advertise_interval_unset(struct peer
*peer
)
5143 struct peer
*member
;
5144 struct listnode
*node
, *nnode
;
5146 /* Inherit configuration from peer-group if peer is member. */
5147 if (peer_group_active(peer
)) {
5148 peer_flag_inherit(peer
, PEER_FLAG_ROUTEADV
);
5149 PEER_ATTR_INHERIT(peer
, peer
->group
, routeadv
);
5151 /* Otherwise remove flag and configuration from peer. */
5152 peer_flag_unset(peer
, PEER_FLAG_ROUTEADV
);
5156 /* Set timer with fallback to default value. */
5158 peer
->v_routeadv
= peer
->routeadv
;
5160 peer
->v_routeadv
= (peer
->sort
== BGP_PEER_IBGP
)
5161 ? BGP_DEFAULT_IBGP_ROUTEADV
5162 : BGP_DEFAULT_EBGP_ROUTEADV
;
5164 /* Check if handling a regular peer. */
5165 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5166 /* Update peer route announcements. */
5167 update_group_adjust_peer_afs(peer
);
5168 if (peer
->status
== Established
)
5169 bgp_announce_route_all(peer
);
5171 /* Skip peer-group mechanics for regular peers. */
5176 * Remove flag and configuration from all peer-group members, unless
5177 * they are explicitely overriding peer-group configuration.
5179 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5180 /* Skip peers with overridden configuration. */
5181 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_ROUTEADV
))
5184 /* Remove flag and configuration on peer-group member. */
5185 UNSET_FLAG(member
->flags
, PEER_FLAG_ROUTEADV
);
5186 member
->routeadv
= 0;
5187 member
->v_routeadv
= (member
->sort
== BGP_PEER_IBGP
)
5188 ? BGP_DEFAULT_IBGP_ROUTEADV
5189 : BGP_DEFAULT_EBGP_ROUTEADV
;
5191 /* Update peer route announcements. */
5192 update_group_adjust_peer_afs(member
);
5193 if (member
->status
== Established
)
5194 bgp_announce_route_all(member
);
5200 /* neighbor interface */
5201 void peer_interface_set(struct peer
*peer
, const char *str
)
5203 XFREE(MTYPE_BGP_PEER_IFNAME
, peer
->ifname
);
5204 peer
->ifname
= XSTRDUP(MTYPE_BGP_PEER_IFNAME
, str
);
5207 void peer_interface_unset(struct peer
*peer
)
5209 XFREE(MTYPE_BGP_PEER_IFNAME
, peer
->ifname
);
5213 int peer_allowas_in_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
5214 int allow_num
, int origin
)
5216 struct peer
*member
;
5217 struct listnode
*node
, *nnode
;
5219 if (!origin
&& (allow_num
< 1 || allow_num
> 10))
5220 return BGP_ERR_INVALID_VALUE
;
5222 /* Set flag and configuration on peer. */
5223 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN
);
5225 if (peer
->allowas_in
[afi
][safi
] != 0
5226 || !CHECK_FLAG(peer
->af_flags
[afi
][safi
],
5227 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
5228 peer_af_flag_set(peer
, afi
, safi
,
5229 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5230 peer
->allowas_in
[afi
][safi
] = 0;
5231 peer_on_policy_change(peer
, afi
, safi
, 0);
5234 if (peer
->allowas_in
[afi
][safi
] != allow_num
5235 || CHECK_FLAG(peer
->af_flags
[afi
][safi
],
5236 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
5238 peer_af_flag_unset(peer
, afi
, safi
,
5239 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5240 peer
->allowas_in
[afi
][safi
] = allow_num
;
5241 peer_on_policy_change(peer
, afi
, safi
, 0);
5245 /* Skip peer-group mechanics for regular peers. */
5246 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5250 * Set flag and configuration on all peer-group members, unless
5251 * they are explicitely overriding peer-group configuration.
5253 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5254 /* Skip peers with overridden configuration. */
5255 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
5256 PEER_FLAG_ALLOWAS_IN
))
5259 /* Set flag and configuration on peer-group member. */
5260 SET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_ALLOWAS_IN
);
5262 if (member
->allowas_in
[afi
][safi
] != 0
5263 || !CHECK_FLAG(member
->af_flags
[afi
][safi
],
5264 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
5265 SET_FLAG(member
->af_flags
[afi
][safi
],
5266 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5267 member
->allowas_in
[afi
][safi
] = 0;
5268 peer_on_policy_change(peer
, afi
, safi
, 0);
5271 if (member
->allowas_in
[afi
][safi
] != allow_num
5272 || CHECK_FLAG(member
->af_flags
[afi
][safi
],
5273 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
5274 UNSET_FLAG(member
->af_flags
[afi
][safi
],
5275 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5276 member
->allowas_in
[afi
][safi
] = allow_num
;
5277 peer_on_policy_change(peer
, afi
, safi
, 0);
5285 int peer_allowas_in_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
5287 struct peer
*member
;
5288 struct listnode
*node
, *nnode
;
5290 /* Skip peer if flag is already disabled. */
5291 if (!CHECK_FLAG(peer
->af_flags
[afi
][safi
], PEER_FLAG_ALLOWAS_IN
))
5294 /* Inherit configuration from peer-group if peer is member. */
5295 if (peer_group_active(peer
)) {
5296 peer_af_flag_inherit(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN
);
5297 peer_af_flag_inherit(peer
, afi
, safi
,
5298 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5299 PEER_ATTR_INHERIT(peer
, peer
->group
, allowas_in
[afi
][safi
]);
5300 peer_on_policy_change(peer
, afi
, safi
, 0);
5305 /* Remove flag and configuration from peer. */
5306 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN
);
5307 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5308 peer
->allowas_in
[afi
][safi
] = 0;
5309 peer_on_policy_change(peer
, afi
, safi
, 0);
5311 /* Skip peer-group mechanics if handling a regular peer. */
5312 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5316 * Remove flags and configuration from all peer-group members, unless
5317 * they are explicitely overriding peer-group configuration.
5319 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5320 /* Skip peers with overridden configuration. */
5321 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
5322 PEER_FLAG_ALLOWAS_IN
))
5325 /* Skip peers where flag is already disabled. */
5326 if (!CHECK_FLAG(member
->af_flags
[afi
][safi
],
5327 PEER_FLAG_ALLOWAS_IN
))
5330 /* Remove flags and configuration on peer-group member. */
5331 UNSET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_ALLOWAS_IN
);
5332 UNSET_FLAG(member
->af_flags
[afi
][safi
],
5333 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5334 member
->allowas_in
[afi
][safi
] = 0;
5335 peer_on_policy_change(member
, afi
, safi
, 0);
5341 int peer_local_as_set(struct peer
*peer
, as_t as
, int no_prepend
,
5344 bool old_no_prepend
, old_replace_as
;
5345 struct bgp
*bgp
= peer
->bgp
;
5346 struct peer
*member
;
5347 struct listnode
*node
, *nnode
;
5348 bgp_peer_sort_t ptype
= peer_sort(peer
);
5350 if (ptype
!= BGP_PEER_EBGP
&& ptype
!= BGP_PEER_INTERNAL
)
5351 return BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP
;
5354 return BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS
;
5357 return BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS
;
5359 /* Save previous flag states. */
5361 !!CHECK_FLAG(peer
->flags
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
5363 !!CHECK_FLAG(peer
->flags
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
5365 /* Set flag and configuration on peer. */
5366 peer_flag_set(peer
, PEER_FLAG_LOCAL_AS
);
5367 peer_flag_modify(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
, no_prepend
);
5368 peer_flag_modify(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
, replace_as
);
5370 if (peer
->change_local_as
== as
&& old_no_prepend
== no_prepend
5371 && old_replace_as
== replace_as
)
5373 peer
->change_local_as
= as
;
5375 /* Check if handling a regular peer. */
5376 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5377 /* Send notification or reset peer depending on state. */
5378 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
5379 peer
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
5380 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
5381 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5383 bgp_session_reset(peer
);
5385 /* Skip peer-group mechanics for regular peers. */
5390 * Set flag and configuration on all peer-group members, unless they are
5391 * explicitely overriding peer-group configuration.
5393 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5394 /* Skip peers with overridden configuration. */
5395 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_LOCAL_AS
))
5398 /* Skip peers with the same configuration. */
5399 old_no_prepend
= CHECK_FLAG(member
->flags
,
5400 PEER_FLAG_LOCAL_AS_NO_PREPEND
);
5401 old_replace_as
= CHECK_FLAG(member
->flags
,
5402 PEER_FLAG_LOCAL_AS_REPLACE_AS
);
5403 if (member
->change_local_as
== as
5404 && CHECK_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS
)
5405 && old_no_prepend
== no_prepend
5406 && old_replace_as
== replace_as
)
5409 /* Set flag and configuration on peer-group member. */
5410 SET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS
);
5411 COND_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_NO_PREPEND
,
5413 COND_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_REPLACE_AS
,
5415 member
->change_local_as
= as
;
5417 /* Send notification or stop peer depending on state. */
5418 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
5419 member
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
5420 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
5421 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5423 BGP_EVENT_ADD(member
, BGP_Stop
);
5429 int peer_local_as_unset(struct peer
*peer
)
5431 struct peer
*member
;
5432 struct listnode
*node
, *nnode
;
5434 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_LOCAL_AS
))
5437 /* Inherit configuration from peer-group if peer is member. */
5438 if (peer_group_active(peer
)) {
5439 peer_flag_inherit(peer
, PEER_FLAG_LOCAL_AS
);
5440 peer_flag_inherit(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
5441 peer_flag_inherit(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
5442 PEER_ATTR_INHERIT(peer
, peer
->group
, change_local_as
);
5444 /* Otherwise remove flag and configuration from peer. */
5445 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS
);
5446 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
5447 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
5448 peer
->change_local_as
= 0;
5451 /* Check if handling a regular peer. */
5452 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5453 /* Send notification or stop peer depending on state. */
5454 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
5455 peer
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
5456 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
5457 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5459 BGP_EVENT_ADD(peer
, BGP_Stop
);
5461 /* Skip peer-group mechanics for regular peers. */
5466 * Remove flag and configuration from all peer-group members, unless
5467 * they are explicitely overriding peer-group configuration.
5469 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5470 /* Skip peers with overridden configuration. */
5471 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_LOCAL_AS
))
5474 /* Remove flag and configuration on peer-group member. */
5475 UNSET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS
);
5476 UNSET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
5477 UNSET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
5478 member
->change_local_as
= 0;
5480 /* Send notification or stop peer depending on state. */
5481 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
5482 member
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
5483 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
5484 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5486 bgp_session_reset(member
);
5492 /* Set password for authenticating with the peer. */
5493 int peer_password_set(struct peer
*peer
, const char *password
)
5495 struct peer
*member
;
5496 struct listnode
*node
, *nnode
;
5497 int len
= password
? strlen(password
) : 0;
5498 int ret
= BGP_SUCCESS
;
5500 if ((len
< PEER_PASSWORD_MINLEN
) || (len
> PEER_PASSWORD_MAXLEN
))
5501 return BGP_ERR_INVALID_VALUE
;
5503 /* Set flag and configuration on peer. */
5504 peer_flag_set(peer
, PEER_FLAG_PASSWORD
);
5505 if (peer
->password
&& strcmp(peer
->password
, password
) == 0)
5507 XFREE(MTYPE_PEER_PASSWORD
, peer
->password
);
5508 peer
->password
= XSTRDUP(MTYPE_PEER_PASSWORD
, password
);
5510 /* Check if handling a regular peer. */
5511 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5512 /* Send notification or reset peer depending on state. */
5513 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
5514 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
5515 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5517 bgp_session_reset(peer
);
5520 * Attempt to install password on socket and skip peer-group
5523 if (BGP_PEER_SU_UNSPEC(peer
))
5525 return (bgp_md5_set(peer
) >= 0) ? BGP_SUCCESS
5526 : BGP_ERR_TCPSIG_FAILED
;
5530 * Set flag and configuration on all peer-group members, unless they are
5531 * explicitely overriding peer-group configuration.
5533 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5534 /* Skip peers with overridden configuration. */
5535 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_PASSWORD
))
5538 /* Skip peers with the same password. */
5539 if (member
->password
&& strcmp(member
->password
, password
) == 0)
5542 /* Set flag and configuration on peer-group member. */
5543 SET_FLAG(member
->flags
, PEER_FLAG_PASSWORD
);
5544 if (member
->password
)
5545 XFREE(MTYPE_PEER_PASSWORD
, member
->password
);
5546 member
->password
= XSTRDUP(MTYPE_PEER_PASSWORD
, password
);
5548 /* Send notification or reset peer depending on state. */
5549 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
))
5550 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
5551 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5553 bgp_session_reset(member
);
5555 /* Attempt to install password on socket. */
5556 if (!BGP_PEER_SU_UNSPEC(member
) && bgp_md5_set(member
) < 0)
5557 ret
= BGP_ERR_TCPSIG_FAILED
;
5560 /* Set flag and configuration on all peer-group listen ranges */
5561 struct listnode
*ln
;
5564 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP
], ln
, lr
))
5565 bgp_md5_set_prefix(lr
, password
);
5566 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP6
], ln
, lr
))
5567 bgp_md5_set_prefix(lr
, password
);
5572 int peer_password_unset(struct peer
*peer
)
5574 struct peer
*member
;
5575 struct listnode
*node
, *nnode
;
5577 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
))
5580 /* Inherit configuration from peer-group if peer is member. */
5581 if (peer_group_active(peer
)) {
5582 peer_flag_inherit(peer
, PEER_FLAG_PASSWORD
);
5583 PEER_STR_ATTR_INHERIT(peer
, peer
->group
, password
,
5584 MTYPE_PEER_PASSWORD
);
5586 /* Otherwise remove flag and configuration from peer. */
5587 peer_flag_unset(peer
, PEER_FLAG_PASSWORD
);
5588 XFREE(MTYPE_PEER_PASSWORD
, peer
->password
);
5591 /* Check if handling a regular peer. */
5592 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5593 /* Send notification or reset peer depending on state. */
5594 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
5595 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
5596 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5598 bgp_session_reset(peer
);
5600 /* Attempt to uninstall password on socket. */
5601 if (!BGP_PEER_SU_UNSPEC(peer
))
5602 bgp_md5_unset(peer
);
5604 /* Skip peer-group mechanics for regular peers. */
5609 * Remove flag and configuration from all peer-group members, unless
5610 * they are explicitely overriding peer-group configuration.
5612 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5613 /* Skip peers with overridden configuration. */
5614 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_PASSWORD
))
5617 /* Remove flag and configuration on peer-group member. */
5618 UNSET_FLAG(member
->flags
, PEER_FLAG_PASSWORD
);
5619 XFREE(MTYPE_PEER_PASSWORD
, member
->password
);
5621 /* Send notification or reset peer depending on state. */
5622 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
))
5623 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
5624 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5626 bgp_session_reset(member
);
5628 /* Attempt to uninstall password on socket. */
5629 if (!BGP_PEER_SU_UNSPEC(member
))
5630 bgp_md5_unset(member
);
5633 /* Set flag and configuration on all peer-group listen ranges */
5634 struct listnode
*ln
;
5637 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP
], ln
, lr
))
5638 bgp_md5_unset_prefix(lr
);
5639 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP6
], ln
, lr
))
5640 bgp_md5_unset_prefix(lr
);
5646 /* Set distribute list to the peer. */
5647 int peer_distribute_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
5650 struct peer
*member
;
5651 struct bgp_filter
*filter
;
5652 struct listnode
*node
, *nnode
;
5654 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
5655 return BGP_ERR_INVALID_VALUE
;
5657 /* Set configuration on peer. */
5658 filter
= &peer
->filter
[afi
][safi
];
5659 if (filter
->plist
[direct
].name
)
5660 return BGP_ERR_PEER_FILTER_CONFLICT
;
5661 if (filter
->dlist
[direct
].name
)
5662 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->dlist
[direct
].name
);
5663 filter
->dlist
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
5664 filter
->dlist
[direct
].alist
= access_list_lookup(afi
, name
);
5666 /* Check if handling a regular peer. */
5667 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5668 /* Set override-flag and process peer route updates. */
5669 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
5670 PEER_FT_DISTRIBUTE_LIST
);
5671 peer_on_policy_change(peer
, afi
, safi
,
5672 (direct
== FILTER_OUT
) ? 1 : 0);
5674 /* Skip peer-group mechanics for regular peers. */
5679 * Set configuration on all peer-group members, un less they are
5680 * explicitely overriding peer-group configuration.
5682 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5683 /* Skip peers with overridden configuration. */
5684 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
5685 PEER_FT_DISTRIBUTE_LIST
))
5688 /* Set configuration on peer-group member. */
5689 filter
= &member
->filter
[afi
][safi
];
5690 if (filter
->dlist
[direct
].name
)
5691 XFREE(MTYPE_BGP_FILTER_NAME
,
5692 filter
->dlist
[direct
].name
);
5693 filter
->dlist
[direct
].name
=
5694 XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
5695 filter
->dlist
[direct
].alist
= access_list_lookup(afi
, name
);
5697 /* Process peer route updates. */
5698 peer_on_policy_change(member
, afi
, safi
,
5699 (direct
== FILTER_OUT
) ? 1 : 0);
5705 int peer_distribute_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
)
5707 struct peer
*member
;
5708 struct bgp_filter
*filter
;
5709 struct listnode
*node
, *nnode
;
5711 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
5712 return BGP_ERR_INVALID_VALUE
;
5714 /* Unset override-flag unconditionally. */
5715 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
5716 PEER_FT_DISTRIBUTE_LIST
);
5718 /* Inherit configuration from peer-group if peer is member. */
5719 if (peer_group_active(peer
)) {
5720 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
5721 filter
[afi
][safi
].dlist
[direct
].name
,
5722 MTYPE_BGP_FILTER_NAME
);
5723 PEER_ATTR_INHERIT(peer
, peer
->group
,
5724 filter
[afi
][safi
].dlist
[direct
].alist
);
5726 /* Otherwise remove configuration from peer. */
5727 filter
= &peer
->filter
[afi
][safi
];
5728 if (filter
->dlist
[direct
].name
)
5729 XFREE(MTYPE_BGP_FILTER_NAME
,
5730 filter
->dlist
[direct
].name
);
5731 filter
->dlist
[direct
].name
= NULL
;
5732 filter
->dlist
[direct
].alist
= NULL
;
5735 /* Check if handling a regular peer. */
5736 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5737 /* Process peer route updates. */
5738 peer_on_policy_change(peer
, afi
, safi
,
5739 (direct
== FILTER_OUT
) ? 1 : 0);
5741 /* Skip peer-group mechanics for regular peers. */
5746 * Remove configuration on all peer-group members, unless they are
5747 * explicitely overriding peer-group configuration.
5749 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5750 /* Skip peers with overridden configuration. */
5751 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
5752 PEER_FT_DISTRIBUTE_LIST
))
5755 /* Remove configuration on peer-group member. */
5756 filter
= &member
->filter
[afi
][safi
];
5757 if (filter
->dlist
[direct
].name
)
5758 XFREE(MTYPE_BGP_FILTER_NAME
,
5759 filter
->dlist
[direct
].name
);
5760 filter
->dlist
[direct
].name
= NULL
;
5761 filter
->dlist
[direct
].alist
= NULL
;
5763 /* Process peer route updates. */
5764 peer_on_policy_change(member
, afi
, safi
,
5765 (direct
== FILTER_OUT
) ? 1 : 0);
5771 /* Update distribute list. */
5772 static void peer_distribute_update(struct access_list
*access
)
5777 struct listnode
*mnode
, *mnnode
;
5778 struct listnode
*node
, *nnode
;
5781 struct peer_group
*group
;
5782 struct bgp_filter
*filter
;
5784 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
5786 update_group_policy_update(bgp
, BGP_POLICY_FILTER_LIST
,
5787 access
->name
, 0, 0);
5788 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
5789 FOREACH_AFI_SAFI (afi
, safi
) {
5790 filter
= &peer
->filter
[afi
][safi
];
5792 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
5794 if (filter
->dlist
[direct
].name
)
5795 filter
->dlist
[direct
]
5796 .alist
= access_list_lookup(
5798 filter
->dlist
[direct
]
5801 filter
->dlist
[direct
].alist
=
5806 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
5807 FOREACH_AFI_SAFI (afi
, safi
) {
5808 filter
= &group
->conf
->filter
[afi
][safi
];
5810 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
5812 if (filter
->dlist
[direct
].name
)
5813 filter
->dlist
[direct
]
5814 .alist
= access_list_lookup(
5816 filter
->dlist
[direct
]
5819 filter
->dlist
[direct
].alist
=
5824 #ifdef ENABLE_BGP_VNC
5825 vnc_prefix_list_update(bgp
);
5830 /* Set prefix list to the peer. */
5831 int peer_prefix_list_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
5834 struct peer
*member
;
5835 struct bgp_filter
*filter
;
5836 struct listnode
*node
, *nnode
;
5838 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
5839 return BGP_ERR_INVALID_VALUE
;
5841 /* Set configuration on peer. */
5842 filter
= &peer
->filter
[afi
][safi
];
5843 if (filter
->dlist
[direct
].name
)
5844 return BGP_ERR_PEER_FILTER_CONFLICT
;
5845 if (filter
->plist
[direct
].name
)
5846 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->plist
[direct
].name
);
5847 filter
->plist
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
5848 filter
->plist
[direct
].plist
= prefix_list_lookup(afi
, name
);
5850 /* Check if handling a regular peer. */
5851 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5852 /* Set override-flag and process peer route updates. */
5853 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
5854 PEER_FT_PREFIX_LIST
);
5855 peer_on_policy_change(peer
, afi
, safi
,
5856 (direct
== FILTER_OUT
) ? 1 : 0);
5858 /* Skip peer-group mechanics for regular peers. */
5863 * Set configuration on all peer-group members, unless they are
5864 * explicitely overriding peer-group configuration.
5866 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5867 /* Skip peers with overridden configuration. */
5868 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
5869 PEER_FT_PREFIX_LIST
))
5872 /* Set configuration on peer-group member. */
5873 filter
= &member
->filter
[afi
][safi
];
5874 if (filter
->plist
[direct
].name
)
5875 XFREE(MTYPE_BGP_FILTER_NAME
,
5876 filter
->plist
[direct
].name
);
5877 filter
->plist
[direct
].name
=
5878 XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
5879 filter
->plist
[direct
].plist
= prefix_list_lookup(afi
, name
);
5881 /* Process peer route updates. */
5882 peer_on_policy_change(member
, afi
, safi
,
5883 (direct
== FILTER_OUT
) ? 1 : 0);
5889 int peer_prefix_list_unset(struct peer
*peer
, afi_t afi
, safi_t safi
,
5892 struct peer
*member
;
5893 struct bgp_filter
*filter
;
5894 struct listnode
*node
, *nnode
;
5896 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
5897 return BGP_ERR_INVALID_VALUE
;
5899 /* Unset override-flag unconditionally. */
5900 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
5901 PEER_FT_PREFIX_LIST
);
5903 /* Inherit configuration from peer-group if peer is member. */
5904 if (peer_group_active(peer
)) {
5905 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
5906 filter
[afi
][safi
].plist
[direct
].name
,
5907 MTYPE_BGP_FILTER_NAME
);
5908 PEER_ATTR_INHERIT(peer
, peer
->group
,
5909 filter
[afi
][safi
].plist
[direct
].plist
);
5911 /* Otherwise remove configuration from peer. */
5912 filter
= &peer
->filter
[afi
][safi
];
5913 if (filter
->plist
[direct
].name
)
5914 XFREE(MTYPE_BGP_FILTER_NAME
,
5915 filter
->plist
[direct
].name
);
5916 filter
->plist
[direct
].name
= NULL
;
5917 filter
->plist
[direct
].plist
= NULL
;
5920 /* Check if handling a regular peer. */
5921 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5922 /* Process peer route updates. */
5923 peer_on_policy_change(peer
, afi
, safi
,
5924 (direct
== FILTER_OUT
) ? 1 : 0);
5926 /* Skip peer-group mechanics for regular peers. */
5931 * Remove configuration on all peer-group members, unless they are
5932 * explicitely overriding peer-group configuration.
5934 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5935 /* Skip peers with overridden configuration. */
5936 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
5937 PEER_FT_PREFIX_LIST
))
5940 /* Remove configuration on peer-group member. */
5941 filter
= &member
->filter
[afi
][safi
];
5942 if (filter
->plist
[direct
].name
)
5943 XFREE(MTYPE_BGP_FILTER_NAME
,
5944 filter
->plist
[direct
].name
);
5945 filter
->plist
[direct
].name
= NULL
;
5946 filter
->plist
[direct
].plist
= NULL
;
5948 /* Process peer route updates. */
5949 peer_on_policy_change(member
, afi
, safi
,
5950 (direct
== FILTER_OUT
) ? 1 : 0);
5956 /* Update prefix-list list. */
5957 static void peer_prefix_list_update(struct prefix_list
*plist
)
5959 struct listnode
*mnode
, *mnnode
;
5960 struct listnode
*node
, *nnode
;
5963 struct peer_group
*group
;
5964 struct bgp_filter
*filter
;
5969 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
5972 * Update the prefix-list on update groups.
5974 update_group_policy_update(
5975 bgp
, BGP_POLICY_PREFIX_LIST
,
5976 plist
? prefix_list_name(plist
) : NULL
, 0, 0);
5978 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
5979 FOREACH_AFI_SAFI (afi
, safi
) {
5980 filter
= &peer
->filter
[afi
][safi
];
5982 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
5984 if (filter
->plist
[direct
].name
)
5985 filter
->plist
[direct
]
5986 .plist
= prefix_list_lookup(
5988 filter
->plist
[direct
]
5991 filter
->plist
[direct
].plist
=
5996 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
5997 FOREACH_AFI_SAFI (afi
, safi
) {
5998 filter
= &group
->conf
->filter
[afi
][safi
];
6000 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6002 if (filter
->plist
[direct
].name
)
6003 filter
->plist
[direct
]
6004 .plist
= prefix_list_lookup(
6006 filter
->plist
[direct
]
6009 filter
->plist
[direct
].plist
=
6017 int peer_aslist_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
6020 struct peer
*member
;
6021 struct bgp_filter
*filter
;
6022 struct listnode
*node
, *nnode
;
6024 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6025 return BGP_ERR_INVALID_VALUE
;
6027 /* Set configuration on peer. */
6028 filter
= &peer
->filter
[afi
][safi
];
6029 if (filter
->aslist
[direct
].name
)
6030 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->aslist
[direct
].name
);
6031 filter
->aslist
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6032 filter
->aslist
[direct
].aslist
= as_list_lookup(name
);
6034 /* Check if handling a regular peer. */
6035 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6036 /* Set override-flag and process peer route updates. */
6037 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6038 PEER_FT_FILTER_LIST
);
6039 peer_on_policy_change(peer
, afi
, safi
,
6040 (direct
== FILTER_OUT
) ? 1 : 0);
6042 /* Skip peer-group mechanics for regular peers. */
6047 * Set configuration on all peer-group members, unless they are
6048 * explicitely overriding peer-group configuration.
6050 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6051 /* Skip peers with overridden configuration. */
6052 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6053 PEER_FT_FILTER_LIST
))
6056 /* Set configuration on peer-group member. */
6057 filter
= &member
->filter
[afi
][safi
];
6058 if (filter
->aslist
[direct
].name
)
6059 XFREE(MTYPE_BGP_FILTER_NAME
,
6060 filter
->aslist
[direct
].name
);
6061 filter
->aslist
[direct
].name
=
6062 XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6063 filter
->aslist
[direct
].aslist
= as_list_lookup(name
);
6065 /* Process peer route updates. */
6066 peer_on_policy_change(member
, afi
, safi
,
6067 (direct
== FILTER_OUT
) ? 1 : 0);
6073 int peer_aslist_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
)
6075 struct peer
*member
;
6076 struct bgp_filter
*filter
;
6077 struct listnode
*node
, *nnode
;
6079 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6080 return BGP_ERR_INVALID_VALUE
;
6082 /* Unset override-flag unconditionally. */
6083 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6084 PEER_FT_FILTER_LIST
);
6086 /* Inherit configuration from peer-group if peer is member. */
6087 if (peer_group_active(peer
)) {
6088 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
6089 filter
[afi
][safi
].aslist
[direct
].name
,
6090 MTYPE_BGP_FILTER_NAME
);
6091 PEER_ATTR_INHERIT(peer
, peer
->group
,
6092 filter
[afi
][safi
].aslist
[direct
].aslist
);
6094 /* Otherwise remove configuration from peer. */
6095 filter
= &peer
->filter
[afi
][safi
];
6096 if (filter
->aslist
[direct
].name
)
6097 XFREE(MTYPE_BGP_FILTER_NAME
,
6098 filter
->aslist
[direct
].name
);
6099 filter
->aslist
[direct
].name
= NULL
;
6100 filter
->aslist
[direct
].aslist
= NULL
;
6103 /* Check if handling a regular peer. */
6104 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6105 /* Process peer route updates. */
6106 peer_on_policy_change(peer
, afi
, safi
,
6107 (direct
== FILTER_OUT
) ? 1 : 0);
6109 /* Skip peer-group mechanics for regular peers. */
6114 * Remove configuration on all peer-group members, unless they are
6115 * explicitely overriding peer-group configuration.
6117 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6118 /* Skip peers with overridden configuration. */
6119 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6120 PEER_FT_FILTER_LIST
))
6123 /* Remove configuration on peer-group member. */
6124 filter
= &member
->filter
[afi
][safi
];
6125 if (filter
->aslist
[direct
].name
)
6126 XFREE(MTYPE_BGP_FILTER_NAME
,
6127 filter
->aslist
[direct
].name
);
6128 filter
->aslist
[direct
].name
= NULL
;
6129 filter
->aslist
[direct
].aslist
= NULL
;
6131 /* Process peer route updates. */
6132 peer_on_policy_change(member
, afi
, safi
,
6133 (direct
== FILTER_OUT
) ? 1 : 0);
6139 static void peer_aslist_update(const char *aslist_name
)
6144 struct listnode
*mnode
, *mnnode
;
6145 struct listnode
*node
, *nnode
;
6148 struct peer_group
*group
;
6149 struct bgp_filter
*filter
;
6151 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
6152 update_group_policy_update(bgp
, BGP_POLICY_FILTER_LIST
,
6155 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
6156 FOREACH_AFI_SAFI (afi
, safi
) {
6157 filter
= &peer
->filter
[afi
][safi
];
6159 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6161 if (filter
->aslist
[direct
].name
)
6162 filter
->aslist
[direct
]
6163 .aslist
= as_list_lookup(
6164 filter
->aslist
[direct
]
6167 filter
->aslist
[direct
].aslist
=
6172 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
6173 FOREACH_AFI_SAFI (afi
, safi
) {
6174 filter
= &group
->conf
->filter
[afi
][safi
];
6176 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6178 if (filter
->aslist
[direct
].name
)
6179 filter
->aslist
[direct
]
6180 .aslist
= as_list_lookup(
6181 filter
->aslist
[direct
]
6184 filter
->aslist
[direct
].aslist
=
6192 static void peer_aslist_add(char *aslist_name
)
6194 peer_aslist_update(aslist_name
);
6195 route_map_notify_dependencies(aslist_name
, RMAP_EVENT_ASLIST_ADDED
);
6198 static void peer_aslist_del(const char *aslist_name
)
6200 peer_aslist_update(aslist_name
);
6201 route_map_notify_dependencies(aslist_name
, RMAP_EVENT_ASLIST_DELETED
);
6205 int peer_route_map_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
6206 const char *name
, struct route_map
*route_map
)
6208 struct peer
*member
;
6209 struct bgp_filter
*filter
;
6210 struct listnode
*node
, *nnode
;
6212 if (direct
!= RMAP_IN
&& direct
!= RMAP_OUT
)
6213 return BGP_ERR_INVALID_VALUE
;
6215 /* Set configuration on peer. */
6216 filter
= &peer
->filter
[afi
][safi
];
6217 if (filter
->map
[direct
].name
) {
6218 /* If the neighbor is configured with the same route-map
6219 * again then, ignore the duplicate configuration.
6221 if (strcmp(filter
->map
[direct
].name
, name
) == 0)
6224 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
6226 route_map_counter_decrement(filter
->map
[direct
].map
);
6227 filter
->map
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6228 filter
->map
[direct
].map
= route_map
;
6229 route_map_counter_increment(route_map
);
6231 /* Check if handling a regular peer. */
6232 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6233 /* Set override-flag and process peer route updates. */
6234 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6236 peer_on_policy_change(peer
, afi
, safi
,
6237 (direct
== RMAP_OUT
) ? 1 : 0);
6239 /* Skip peer-group mechanics for regular peers. */
6244 * Set configuration on all peer-group members, unless they are
6245 * explicitely overriding peer-group configuration.
6247 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6248 /* Skip peers with overridden configuration. */
6249 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6253 /* Set configuration on peer-group member. */
6254 filter
= &member
->filter
[afi
][safi
];
6255 if (filter
->map
[direct
].name
)
6256 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
6257 route_map_counter_decrement(filter
->map
[direct
].map
);
6258 filter
->map
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6259 filter
->map
[direct
].map
= route_map
;
6260 route_map_counter_increment(route_map
);
6262 /* Process peer route updates. */
6263 peer_on_policy_change(member
, afi
, safi
,
6264 (direct
== RMAP_OUT
) ? 1 : 0);
6269 /* Unset route-map from the peer. */
6270 int peer_route_map_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
)
6272 struct peer
*member
;
6273 struct bgp_filter
*filter
;
6274 struct listnode
*node
, *nnode
;
6276 if (direct
!= RMAP_IN
&& direct
!= RMAP_OUT
)
6277 return BGP_ERR_INVALID_VALUE
;
6279 /* Unset override-flag unconditionally. */
6280 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
], PEER_FT_ROUTE_MAP
);
6282 /* Inherit configuration from peer-group if peer is member. */
6283 if (peer_group_active(peer
)) {
6284 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
6285 filter
[afi
][safi
].map
[direct
].name
,
6286 MTYPE_BGP_FILTER_NAME
);
6287 PEER_ATTR_INHERIT(peer
, peer
->group
,
6288 filter
[afi
][safi
].map
[direct
].map
);
6290 /* Otherwise remove configuration from peer. */
6291 filter
= &peer
->filter
[afi
][safi
];
6292 if (filter
->map
[direct
].name
)
6293 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
6294 route_map_counter_decrement(filter
->map
[direct
].map
);
6295 filter
->map
[direct
].name
= NULL
;
6296 filter
->map
[direct
].map
= NULL
;
6299 /* Check if handling a regular peer. */
6300 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6301 /* Process peer route updates. */
6302 peer_on_policy_change(peer
, afi
, safi
,
6303 (direct
== RMAP_OUT
) ? 1 : 0);
6305 /* Skip peer-group mechanics for regular peers. */
6310 * Remove configuration on all peer-group members, unless they are
6311 * explicitely overriding peer-group configuration.
6313 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6314 /* Skip peers with overridden configuration. */
6315 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6319 /* Remove configuration on peer-group member. */
6320 filter
= &member
->filter
[afi
][safi
];
6321 if (filter
->map
[direct
].name
)
6322 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
6323 route_map_counter_decrement(filter
->map
[direct
].map
);
6324 filter
->map
[direct
].name
= NULL
;
6325 filter
->map
[direct
].map
= NULL
;
6327 /* Process peer route updates. */
6328 peer_on_policy_change(member
, afi
, safi
,
6329 (direct
== RMAP_OUT
) ? 1 : 0);
6335 /* Set unsuppress-map to the peer. */
6336 int peer_unsuppress_map_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
6337 const char *name
, struct route_map
*route_map
)
6339 struct peer
*member
;
6340 struct bgp_filter
*filter
;
6341 struct listnode
*node
, *nnode
;
6343 /* Set configuration on peer. */
6344 filter
= &peer
->filter
[afi
][safi
];
6345 if (filter
->usmap
.name
)
6346 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
6347 route_map_counter_decrement(filter
->usmap
.map
);
6348 filter
->usmap
.name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6349 filter
->usmap
.map
= route_map
;
6350 route_map_counter_increment(route_map
);
6352 /* Check if handling a regular peer. */
6353 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6354 /* Set override-flag and process peer route updates. */
6355 SET_FLAG(peer
->filter_override
[afi
][safi
][0],
6356 PEER_FT_UNSUPPRESS_MAP
);
6357 peer_on_policy_change(peer
, afi
, safi
, 1);
6359 /* Skip peer-group mechanics for regular peers. */
6364 * Set configuration on all peer-group members, unless they are
6365 * explicitely overriding peer-group configuration.
6367 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6368 /* Skip peers with overridden configuration. */
6369 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][0],
6370 PEER_FT_UNSUPPRESS_MAP
))
6373 /* Set configuration on peer-group member. */
6374 filter
= &member
->filter
[afi
][safi
];
6375 if (filter
->usmap
.name
)
6376 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
6377 route_map_counter_decrement(filter
->usmap
.map
);
6378 filter
->usmap
.name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6379 filter
->usmap
.map
= route_map
;
6380 route_map_counter_increment(route_map
);
6382 /* Process peer route updates. */
6383 peer_on_policy_change(member
, afi
, safi
, 1);
6389 /* Unset route-map from the peer. */
6390 int peer_unsuppress_map_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
6392 struct peer
*member
;
6393 struct bgp_filter
*filter
;
6394 struct listnode
*node
, *nnode
;
6396 /* Unset override-flag unconditionally. */
6397 UNSET_FLAG(peer
->filter_override
[afi
][safi
][0], PEER_FT_UNSUPPRESS_MAP
);
6399 /* Inherit configuration from peer-group if peer is member. */
6400 if (peer_group_active(peer
)) {
6401 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
6402 filter
[afi
][safi
].usmap
.name
,
6403 MTYPE_BGP_FILTER_NAME
);
6404 PEER_ATTR_INHERIT(peer
, peer
->group
,
6405 filter
[afi
][safi
].usmap
.map
);
6407 /* Otherwise remove configuration from peer. */
6408 filter
= &peer
->filter
[afi
][safi
];
6409 if (filter
->usmap
.name
)
6410 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
6411 route_map_counter_decrement(filter
->usmap
.map
);
6412 filter
->usmap
.name
= NULL
;
6413 filter
->usmap
.map
= NULL
;
6416 /* Check if handling a regular peer. */
6417 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6418 /* Process peer route updates. */
6419 peer_on_policy_change(peer
, afi
, safi
, 1);
6421 /* Skip peer-group mechanics for regular peers. */
6426 * Remove configuration on all peer-group members, unless they are
6427 * explicitely overriding peer-group configuration.
6429 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6430 /* Skip peers with overridden configuration. */
6431 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][0],
6432 PEER_FT_UNSUPPRESS_MAP
))
6435 /* Remove configuration on peer-group member. */
6436 filter
= &member
->filter
[afi
][safi
];
6437 if (filter
->usmap
.name
)
6438 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
6439 route_map_counter_decrement(filter
->usmap
.map
);
6440 filter
->usmap
.name
= NULL
;
6441 filter
->usmap
.map
= NULL
;
6443 /* Process peer route updates. */
6444 peer_on_policy_change(member
, afi
, safi
, 1);
6450 int peer_maximum_prefix_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
6451 uint32_t max
, uint8_t threshold
, int warning
,
6452 uint16_t restart
, bool force
)
6454 struct peer
*member
;
6455 struct listnode
*node
, *nnode
;
6457 /* Set flags and configuration on peer. */
6458 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX
);
6461 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_FORCE
);
6463 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_FORCE
);
6466 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_WARNING
);
6468 peer_af_flag_unset(peer
, afi
, safi
,
6469 PEER_FLAG_MAX_PREFIX_WARNING
);
6471 peer
->pmax
[afi
][safi
] = max
;
6472 peer
->pmax_threshold
[afi
][safi
] = threshold
;
6473 peer
->pmax_restart
[afi
][safi
] = restart
;
6475 /* Check if handling a regular peer. */
6476 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6477 /* Re-check if peer violates maximum-prefix. */
6478 if ((peer
->status
== Established
) && (peer
->afc
[afi
][safi
]))
6479 bgp_maximum_prefix_overflow(peer
, afi
, safi
, 1);
6481 /* Skip peer-group mechanics for regular peers. */
6486 * Set flags and configuration on all peer-group members, unless they
6487 * are explicitely overriding peer-group configuration.
6489 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6490 /* Skip peers with overridden configuration. */
6491 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
6492 PEER_FLAG_MAX_PREFIX
))
6495 /* Set flag and configuration on peer-group member. */
6496 member
->pmax
[afi
][safi
] = max
;
6497 member
->pmax_threshold
[afi
][safi
] = threshold
;
6498 member
->pmax_restart
[afi
][safi
] = restart
;
6501 SET_FLAG(member
->af_flags
[afi
][safi
],
6502 PEER_FLAG_MAX_PREFIX_FORCE
);
6504 UNSET_FLAG(member
->af_flags
[afi
][safi
],
6505 PEER_FLAG_MAX_PREFIX_FORCE
);
6508 SET_FLAG(member
->af_flags
[afi
][safi
],
6509 PEER_FLAG_MAX_PREFIX_WARNING
);
6511 UNSET_FLAG(member
->af_flags
[afi
][safi
],
6512 PEER_FLAG_MAX_PREFIX_WARNING
);
6514 /* Re-check if peer violates maximum-prefix. */
6515 if ((member
->status
== Established
) && (member
->afc
[afi
][safi
]))
6516 bgp_maximum_prefix_overflow(member
, afi
, safi
, 1);
6522 int peer_maximum_prefix_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
6524 /* Inherit configuration from peer-group if peer is member. */
6525 if (peer_group_active(peer
)) {
6526 peer_af_flag_inherit(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX
);
6527 peer_af_flag_inherit(peer
, afi
, safi
,
6528 PEER_FLAG_MAX_PREFIX_FORCE
);
6529 peer_af_flag_inherit(peer
, afi
, safi
,
6530 PEER_FLAG_MAX_PREFIX_WARNING
);
6531 PEER_ATTR_INHERIT(peer
, peer
->group
, pmax
[afi
][safi
]);
6532 PEER_ATTR_INHERIT(peer
, peer
->group
, pmax_threshold
[afi
][safi
]);
6533 PEER_ATTR_INHERIT(peer
, peer
->group
, pmax_restart
[afi
][safi
]);
6538 /* Remove flags and configuration from peer. */
6539 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX
);
6540 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_FORCE
);
6541 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_WARNING
);
6542 peer
->pmax
[afi
][safi
] = 0;
6543 peer
->pmax_threshold
[afi
][safi
] = 0;
6544 peer
->pmax_restart
[afi
][safi
] = 0;
6547 * Remove flags and configuration from all peer-group members, unless
6548 * they are explicitely overriding peer-group configuration.
6550 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6551 struct peer
*member
;
6552 struct listnode
*node
;
6554 for (ALL_LIST_ELEMENTS_RO(peer
->group
->peer
, node
, member
)) {
6555 /* Skip peers with overridden configuration. */
6556 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
6557 PEER_FLAG_MAX_PREFIX
))
6560 /* Remove flag and configuration on peer-group member.
6562 UNSET_FLAG(member
->af_flags
[afi
][safi
],
6563 PEER_FLAG_MAX_PREFIX
);
6564 UNSET_FLAG(member
->af_flags
[afi
][safi
],
6565 PEER_FLAG_MAX_PREFIX_FORCE
);
6566 UNSET_FLAG(member
->af_flags
[afi
][safi
],
6567 PEER_FLAG_MAX_PREFIX_WARNING
);
6568 member
->pmax
[afi
][safi
] = 0;
6569 member
->pmax_threshold
[afi
][safi
] = 0;
6570 member
->pmax_restart
[afi
][safi
] = 0;
6577 int is_ebgp_multihop_configured(struct peer
*peer
)
6579 struct peer_group
*group
;
6580 struct listnode
*node
, *nnode
;
6583 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6584 group
= peer
->group
;
6585 if ((peer_sort(peer
) != BGP_PEER_IBGP
)
6586 && (group
->conf
->ttl
!= BGP_DEFAULT_TTL
))
6589 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer1
)) {
6590 if ((peer_sort(peer1
) != BGP_PEER_IBGP
)
6591 && (peer1
->ttl
!= BGP_DEFAULT_TTL
))
6595 if ((peer_sort(peer
) != BGP_PEER_IBGP
)
6596 && (peer
->ttl
!= BGP_DEFAULT_TTL
))
6602 /* Set # of hops between us and BGP peer. */
6603 int peer_ttl_security_hops_set(struct peer
*peer
, int gtsm_hops
)
6605 struct peer_group
*group
;
6606 struct listnode
*node
, *nnode
;
6609 zlog_debug("peer_ttl_security_hops_set: set gtsm_hops to %d for %s",
6610 gtsm_hops
, peer
->host
);
6612 /* We cannot configure ttl-security hops when ebgp-multihop is already
6613 set. For non peer-groups, the check is simple. For peer-groups,
6615 slightly messy, because we need to check both the peer-group
6617 and all peer-group members for any trace of ebgp-multihop
6619 before actually applying the ttl-security rules. Cisco really made a
6620 mess of this configuration parameter, and OpenBGPD got it right.
6623 if ((peer
->gtsm_hops
== BGP_GTSM_HOPS_DISABLED
)
6624 && (peer
->sort
!= BGP_PEER_IBGP
)) {
6625 if (is_ebgp_multihop_configured(peer
))
6626 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
6628 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6629 peer
->gtsm_hops
= gtsm_hops
;
6631 /* Calling ebgp multihop also resets the session.
6632 * On restart, NHT will get setup correctly as will the
6633 * min & max ttls on the socket. The return value is
6636 ret
= peer_ebgp_multihop_set(peer
, MAXTTL
);
6641 group
= peer
->group
;
6642 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
,
6644 peer
->gtsm_hops
= group
->conf
->gtsm_hops
;
6646 /* Calling ebgp multihop also resets the
6648 * On restart, NHT will get setup correctly as
6650 * min & max ttls on the socket. The return
6654 peer_ebgp_multihop_set(peer
, MAXTTL
);
6658 /* Post the first gtsm setup or if its ibgp, maxttl setting
6660 * necessary, just set the minttl.
6662 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6663 peer
->gtsm_hops
= gtsm_hops
;
6666 sockopt_minttl(peer
->su
.sa
.sa_family
, peer
->fd
,
6667 MAXTTL
+ 1 - gtsm_hops
);
6668 if ((peer
->status
< Established
) && peer
->doppelganger
6669 && (peer
->doppelganger
->fd
>= 0))
6670 sockopt_minttl(peer
->su
.sa
.sa_family
,
6671 peer
->doppelganger
->fd
,
6672 MAXTTL
+ 1 - gtsm_hops
);
6674 group
= peer
->group
;
6675 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
,
6677 peer
->gtsm_hops
= group
->conf
->gtsm_hops
;
6679 /* Change setting of existing peer
6680 * established then change value (may break
6682 * not established yet (teardown session and
6684 * no session then do nothing (will get
6685 * handled by next connection)
6689 != BGP_GTSM_HOPS_DISABLED
)
6691 peer
->su
.sa
.sa_family
, peer
->fd
,
6692 MAXTTL
+ 1 - peer
->gtsm_hops
);
6693 if ((peer
->status
< Established
)
6694 && peer
->doppelganger
6695 && (peer
->doppelganger
->fd
>= 0))
6696 sockopt_minttl(peer
->su
.sa
.sa_family
,
6697 peer
->doppelganger
->fd
,
6698 MAXTTL
+ 1 - gtsm_hops
);
6706 int peer_ttl_security_hops_unset(struct peer
*peer
)
6708 struct peer_group
*group
;
6709 struct listnode
*node
, *nnode
;
6712 zlog_debug("peer_ttl_security_hops_unset: set gtsm_hops to zero for %s",
6715 /* if a peer-group member, then reset to peer-group default rather than
6717 if (peer_group_active(peer
))
6718 peer
->gtsm_hops
= peer
->group
->conf
->gtsm_hops
;
6720 peer
->gtsm_hops
= BGP_GTSM_HOPS_DISABLED
;
6722 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6723 /* Invoking ebgp_multihop_set will set the TTL back to the
6725 * value as well as restting the NHT and such. The session is
6728 if (peer
->sort
== BGP_PEER_EBGP
)
6729 ret
= peer_ebgp_multihop_unset(peer
);
6732 sockopt_minttl(peer
->su
.sa
.sa_family
, peer
->fd
,
6735 if ((peer
->status
< Established
) && peer
->doppelganger
6736 && (peer
->doppelganger
->fd
>= 0))
6737 sockopt_minttl(peer
->su
.sa
.sa_family
,
6738 peer
->doppelganger
->fd
, 0);
6741 group
= peer
->group
;
6742 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
6743 peer
->gtsm_hops
= BGP_GTSM_HOPS_DISABLED
;
6744 if (peer
->sort
== BGP_PEER_EBGP
)
6745 ret
= peer_ebgp_multihop_unset(peer
);
6748 sockopt_minttl(peer
->su
.sa
.sa_family
,
6751 if ((peer
->status
< Established
)
6752 && peer
->doppelganger
6753 && (peer
->doppelganger
->fd
>= 0))
6754 sockopt_minttl(peer
->su
.sa
.sa_family
,
6755 peer
->doppelganger
->fd
,
6765 * If peer clear is invoked in a loop for all peers on the BGP instance,
6766 * it may end up freeing the doppelganger, and if this was the next node
6767 * to the current node, we would end up accessing the freed next node.
6768 * Pass along additional parameter which can be updated if next node
6769 * is freed; only required when walking the peer list on BGP instance.
6771 int peer_clear(struct peer
*peer
, struct listnode
**nnode
)
6773 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_SHUTDOWN
)) {
6774 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_PREFIX_OVERFLOW
)) {
6775 UNSET_FLAG(peer
->sflags
, PEER_STATUS_PREFIX_OVERFLOW
);
6776 if (peer
->t_pmax_restart
) {
6777 BGP_TIMER_OFF(peer
->t_pmax_restart
);
6778 if (bgp_debug_neighbor_events(peer
))
6780 "%s Maximum-prefix restart timer canceled",
6783 BGP_EVENT_ADD(peer
, BGP_Start
);
6787 peer
->v_start
= BGP_INIT_START_TIMER
;
6788 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
6789 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
6790 BGP_NOTIFY_CEASE_ADMIN_RESET
);
6792 bgp_session_reset_safe(peer
, nnode
);
6797 int peer_clear_soft(struct peer
*peer
, afi_t afi
, safi_t safi
,
6798 enum bgp_clear_type stype
)
6800 struct peer_af
*paf
;
6802 if (peer
->status
!= Established
)
6805 if (!peer
->afc
[afi
][safi
])
6806 return BGP_ERR_AF_UNCONFIGURED
;
6808 peer
->rtt
= sockopt_tcp_rtt(peer
->fd
);
6810 if (stype
== BGP_CLEAR_SOFT_OUT
|| stype
== BGP_CLEAR_SOFT_BOTH
) {
6811 /* Clear the "neighbor x.x.x.x default-originate" flag */
6812 paf
= peer_af_find(peer
, afi
, safi
);
6813 if (paf
&& paf
->subgroup
6814 && CHECK_FLAG(paf
->subgroup
->sflags
,
6815 SUBGRP_STATUS_DEFAULT_ORIGINATE
))
6816 UNSET_FLAG(paf
->subgroup
->sflags
,
6817 SUBGRP_STATUS_DEFAULT_ORIGINATE
);
6819 bgp_announce_route(peer
, afi
, safi
);
6822 if (stype
== BGP_CLEAR_SOFT_IN_ORF_PREFIX
) {
6823 if (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
6824 PEER_CAP_ORF_PREFIX_SM_ADV
)
6825 && (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
6826 PEER_CAP_ORF_PREFIX_RM_RCV
)
6827 || CHECK_FLAG(peer
->af_cap
[afi
][safi
],
6828 PEER_CAP_ORF_PREFIX_RM_OLD_RCV
))) {
6829 struct bgp_filter
*filter
= &peer
->filter
[afi
][safi
];
6830 uint8_t prefix_type
;
6832 if (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
6833 PEER_CAP_ORF_PREFIX_RM_RCV
))
6834 prefix_type
= ORF_TYPE_PREFIX
;
6836 prefix_type
= ORF_TYPE_PREFIX_OLD
;
6838 if (filter
->plist
[FILTER_IN
].plist
) {
6839 if (CHECK_FLAG(peer
->af_sflags
[afi
][safi
],
6840 PEER_STATUS_ORF_PREFIX_SEND
))
6841 bgp_route_refresh_send(
6842 peer
, afi
, safi
, prefix_type
,
6844 bgp_route_refresh_send(peer
, afi
, safi
,
6846 REFRESH_IMMEDIATE
, 0);
6848 if (CHECK_FLAG(peer
->af_sflags
[afi
][safi
],
6849 PEER_STATUS_ORF_PREFIX_SEND
))
6850 bgp_route_refresh_send(
6851 peer
, afi
, safi
, prefix_type
,
6852 REFRESH_IMMEDIATE
, 1);
6854 bgp_route_refresh_send(peer
, afi
, safi
,
6861 if (stype
== BGP_CLEAR_SOFT_IN
|| stype
== BGP_CLEAR_SOFT_BOTH
6862 || stype
== BGP_CLEAR_SOFT_IN_ORF_PREFIX
) {
6863 /* If neighbor has soft reconfiguration inbound flag.
6864 Use Adj-RIB-In database. */
6865 if (CHECK_FLAG(peer
->af_flags
[afi
][safi
],
6866 PEER_FLAG_SOFT_RECONFIG
))
6867 bgp_soft_reconfig_in(peer
, afi
, safi
);
6869 /* If neighbor has route refresh capability, send route
6871 message to the peer. */
6872 if (CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_OLD_RCV
)
6873 || CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_NEW_RCV
))
6874 bgp_route_refresh_send(peer
, afi
, safi
, 0, 0,
6877 return BGP_ERR_SOFT_RECONFIG_UNCONFIGURED
;
6883 /* Display peer uptime.*/
6884 char *peer_uptime(time_t uptime2
, char *buf
, size_t len
, bool use_json
,
6887 time_t uptime1
, epoch_tbuf
;
6890 /* If there is no connection has been done before print `never'. */
6893 json_object_string_add(json
, "peerUptime", "never");
6894 json_object_int_add(json
, "peerUptimeMsec", 0);
6896 snprintf(buf
, len
, "never");
6900 /* Get current time. */
6901 uptime1
= bgp_clock();
6903 gmtime_r(&uptime1
, &tm
);
6905 if (uptime1
< ONE_DAY_SECOND
)
6906 snprintf(buf
, len
, "%02d:%02d:%02d", tm
.tm_hour
, tm
.tm_min
,
6908 else if (uptime1
< ONE_WEEK_SECOND
)
6909 snprintf(buf
, len
, "%dd%02dh%02dm", tm
.tm_yday
, tm
.tm_hour
,
6911 else if (uptime1
< ONE_YEAR_SECOND
)
6912 snprintf(buf
, len
, "%02dw%dd%02dh", tm
.tm_yday
/ 7,
6913 tm
.tm_yday
- ((tm
.tm_yday
/ 7) * 7), tm
.tm_hour
);
6915 snprintf(buf
, len
, "%02dy%02dw%dd", tm
.tm_year
- 70,
6917 tm
.tm_yday
- ((tm
.tm_yday
/ 7) * 7));
6920 epoch_tbuf
= time(NULL
) - uptime1
;
6921 json_object_string_add(json
, "peerUptime", buf
);
6922 json_object_int_add(json
, "peerUptimeMsec", uptime1
* 1000);
6923 json_object_int_add(json
, "peerUptimeEstablishedEpoch",
6930 void bgp_master_init(struct thread_master
*master
, const int buffer_size
)
6934 memset(&bgp_master
, 0, sizeof(struct bgp_master
));
6937 bm
->bgp
= list_new();
6938 bm
->listen_sockets
= list_new();
6939 bm
->port
= BGP_PORT_DEFAULT
;
6940 bm
->master
= master
;
6941 bm
->start_time
= bgp_clock();
6942 bm
->t_rmap_update
= NULL
;
6943 bm
->rmap_update_timer
= RMAP_DEFAULT_UPDATE_TIMER
;
6944 bm
->terminating
= false;
6945 bm
->socket_buffer
= buffer_size
;
6947 bgp_process_queue_init();
6950 /* init the rd id space.
6951 assign 0th index in the bitfield,
6952 so that we start with id 1
6954 bf_init(bm
->rd_idspace
, UINT16_MAX
);
6955 bf_assign_zero_index(bm
->rd_idspace
);
6957 /* mpls label dynamic allocation pool */
6958 bgp_lp_init(bm
->master
, &bm
->labelpool
);
6961 QOBJ_REG(bm
, bgp_master
);
6965 * Free up connected routes and interfaces for a BGP instance. Invoked upon
6966 * instance delete (non-default only) or BGP exit.
6968 static void bgp_if_finish(struct bgp
*bgp
)
6971 struct interface
*ifp
;
6973 vrf
= bgp_vrf_lookup_by_instance_type(bgp
);
6975 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
|| !vrf
)
6978 FOR_ALL_INTERFACES (vrf
, ifp
) {
6979 struct listnode
*c_node
, *c_nnode
;
6980 struct connected
*c
;
6982 for (ALL_LIST_ELEMENTS(ifp
->connected
, c_node
, c_nnode
, c
))
6983 bgp_connected_delete(bgp
, c
);
6987 static void bgp_viewvrf_autocomplete(vector comps
, struct cmd_token
*token
)
6989 struct vrf
*vrf
= NULL
;
6990 struct listnode
*next
;
6993 RB_FOREACH (vrf
, vrf_name_head
, &vrfs_by_name
)
6994 vector_set(comps
, XSTRDUP(MTYPE_COMPLETION
, vrf
->name
));
6996 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, bgp
)) {
6997 if (bgp
->inst_type
!= BGP_INSTANCE_TYPE_VIEW
)
7000 vector_set(comps
, XSTRDUP(MTYPE_COMPLETION
, bgp
->name
));
7004 static void bgp_instasn_autocomplete(vector comps
, struct cmd_token
*token
)
7006 struct listnode
*next
, *next2
;
7007 struct bgp
*bgp
, *bgp2
;
7010 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, bgp
)) {
7012 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next2
, bgp2
)) {
7013 if (bgp2
->as
== bgp
->as
)
7021 snprintf(buf
, sizeof(buf
), "%u", bgp
->as
);
7022 vector_set(comps
, XSTRDUP(MTYPE_COMPLETION
, buf
));
7026 static const struct cmd_variable_handler bgp_viewvrf_var_handlers
[] = {
7027 {.tokenname
= "VIEWVRFNAME", .completions
= bgp_viewvrf_autocomplete
},
7028 {.varname
= "instasn", .completions
= bgp_instasn_autocomplete
},
7029 {.completions
= NULL
},
7032 struct frr_pthread
*bgp_pth_io
;
7033 struct frr_pthread
*bgp_pth_ka
;
7035 static void bgp_pthreads_init(void)
7037 assert(!bgp_pth_io
);
7038 assert(!bgp_pth_ka
);
7040 struct frr_pthread_attr io
= {
7041 .start
= frr_pthread_attr_default
.start
,
7042 .stop
= frr_pthread_attr_default
.stop
,
7044 struct frr_pthread_attr ka
= {
7045 .start
= bgp_keepalives_start
,
7046 .stop
= bgp_keepalives_stop
,
7048 bgp_pth_io
= frr_pthread_new(&io
, "BGP I/O thread", "bgpd_io");
7049 bgp_pth_ka
= frr_pthread_new(&ka
, "BGP Keepalives thread", "bgpd_ka");
7052 void bgp_pthreads_run(void)
7054 frr_pthread_run(bgp_pth_io
, NULL
);
7055 frr_pthread_run(bgp_pth_ka
, NULL
);
7057 /* Wait until threads are ready. */
7058 frr_pthread_wait_running(bgp_pth_io
);
7059 frr_pthread_wait_running(bgp_pth_ka
);
7062 void bgp_pthreads_finish(void)
7064 frr_pthread_stop_all();
7067 void bgp_init(unsigned short instance
)
7070 /* allocates some vital data structures used by peer commands in
7073 /* pre-init pthreads */
7074 bgp_pthreads_init();
7077 bgp_zebra_init(bm
->master
, instance
);
7079 #ifdef ENABLE_BGP_VNC
7080 vnc_zebra_init(bm
->master
);
7083 /* BGP VTY commands installation. */
7091 bgp_route_map_init();
7092 bgp_scan_vty_init();
7094 #ifdef ENABLE_BGP_VNC
7097 bgp_ethernetvpn_init();
7098 bgp_flowspec_vty_init();
7100 /* Access list initialize. */
7102 access_list_add_hook(peer_distribute_update
);
7103 access_list_delete_hook(peer_distribute_update
);
7105 /* Filter list initialize. */
7107 as_list_add_hook(peer_aslist_add
);
7108 as_list_delete_hook(peer_aslist_del
);
7110 /* Prefix list initialize.*/
7112 prefix_list_add_hook(peer_prefix_list_update
);
7113 prefix_list_delete_hook(peer_prefix_list_update
);
7115 /* Community list initialize. */
7116 bgp_clist
= community_list_init();
7121 cmd_variable_handler_register(bgp_viewvrf_var_handlers
);
7124 void bgp_terminate(void)
7128 struct listnode
*node
, *nnode
;
7129 struct listnode
*mnode
, *mnnode
;
7133 /* Close the listener sockets first as this prevents peers from
7135 * to reconnect on receiving the peer unconfig message. In the presence
7136 * of a large number of peers this will ensure that no peer is left with
7137 * a dangling connection
7139 /* reverse bgp_master_init */
7142 if (bm
->listen_sockets
)
7143 list_delete(&bm
->listen_sockets
);
7145 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
))
7146 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
7147 if (peer
->status
== Established
7148 || peer
->status
== OpenSent
7149 || peer
->status
== OpenConfirm
)
7150 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
7151 BGP_NOTIFY_CEASE_PEER_UNCONFIG
);
7153 if (bm
->process_main_queue
)
7154 work_queue_free_and_null(&bm
->process_main_queue
);
7156 if (bm
->t_rmap_update
)
7157 BGP_TIMER_OFF(bm
->t_rmap_update
);
7160 bgp_evpn_mh_finish();
7163 struct peer
*peer_lookup_in_view(struct vty
*vty
, struct bgp
*bgp
,
7164 const char *ip_str
, bool use_json
)
7170 /* Get peer sockunion. */
7171 ret
= str2sockunion(ip_str
, &su
);
7173 peer
= peer_lookup_by_conf_if(bgp
, ip_str
);
7175 peer
= peer_lookup_by_hostname(bgp
, ip_str
);
7179 json_object
*json_no
= NULL
;
7180 json_no
= json_object_new_object();
7181 json_object_string_add(
7183 "malformedAddressOrName",
7185 vty_out(vty
, "%s\n",
7186 json_object_to_json_string_ext(
7188 JSON_C_TO_STRING_PRETTY
));
7189 json_object_free(json_no
);
7192 "%% Malformed address or name: %s\n",
7200 /* Peer structure lookup. */
7201 peer
= peer_lookup(bgp
, &su
);
7204 json_object
*json_no
= NULL
;
7205 json_no
= json_object_new_object();
7206 json_object_string_add(json_no
, "warning",
7207 "No such neighbor in this view/vrf");
7208 vty_out(vty
, "%s\n",
7209 json_object_to_json_string_ext(
7210 json_no
, JSON_C_TO_STRING_PRETTY
));
7211 json_object_free(json_no
);
7213 vty_out(vty
, "No such neighbor in this view/vrf\n");
7220 void bgp_gr_apply_running_config(void)
7222 struct peer
*peer
= NULL
;
7223 struct bgp
*bgp
= NULL
;
7224 struct listnode
*node
, *nnode
;
7225 bool gr_router_detected
= false;
7227 if (BGP_DEBUG(graceful_restart
, GRACEFUL_RESTART
))
7228 zlog_debug("[BGP_GR] %s called !", __func__
);
7230 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
)) {
7231 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
7232 bgp_peer_gr_flags_update(peer
);
7233 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_GRACEFUL_RESTART
))
7234 gr_router_detected
= true;
7237 if (gr_router_detected
7238 && bgp
->present_zebra_gr_state
== ZEBRA_GR_DISABLE
) {
7239 bgp_zebra_send_capabilities(bgp
, true);
7240 } else if (!gr_router_detected
7241 && bgp
->present_zebra_gr_state
== ZEBRA_GR_ENABLE
) {
7242 bgp_zebra_send_capabilities(bgp
, false);
7245 gr_router_detected
= false;