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 "lib/sockopt.h"
47 #include "frr_pthread.h"
50 #include "bgpd/bgpd.h"
51 #include "bgpd/bgp_table.h"
52 #include "bgpd/bgp_aspath.h"
53 #include "bgpd/bgp_route.h"
54 #include "bgpd/bgp_dump.h"
55 #include "bgpd/bgp_debug.h"
56 #include "bgpd/bgp_errors.h"
57 #include "bgpd/bgp_community.h"
58 #include "bgpd/bgp_community_alias.h"
59 #include "bgpd/bgp_conditional_adv.h"
60 #include "bgpd/bgp_attr.h"
61 #include "bgpd/bgp_regex.h"
62 #include "bgpd/bgp_clist.h"
63 #include "bgpd/bgp_fsm.h"
64 #include "bgpd/bgp_packet.h"
65 #include "bgpd/bgp_zebra.h"
66 #include "bgpd/bgp_open.h"
67 #include "bgpd/bgp_filter.h"
68 #include "bgpd/bgp_nexthop.h"
69 #include "bgpd/bgp_damp.h"
70 #include "bgpd/bgp_mplsvpn.h"
72 #include "bgpd/rfapi/bgp_rfapi_cfg.h"
73 #include "bgpd/rfapi/rfapi_backend.h"
75 #include "bgpd/bgp_evpn.h"
76 #include "bgpd/bgp_advertise.h"
77 #include "bgpd/bgp_network.h"
78 #include "bgpd/bgp_vty.h"
79 #include "bgpd/bgp_mpath.h"
80 #include "bgpd/bgp_nht.h"
81 #include "bgpd/bgp_updgrp.h"
82 #include "bgpd/bgp_bfd.h"
83 #include "bgpd/bgp_memory.h"
84 #include "bgpd/bgp_evpn_vty.h"
85 #include "bgpd/bgp_keepalives.h"
86 #include "bgpd/bgp_io.h"
87 #include "bgpd/bgp_ecommunity.h"
88 #include "bgpd/bgp_flowspec.h"
89 #include "bgpd/bgp_labelpool.h"
90 #include "bgpd/bgp_pbr.h"
91 #include "bgpd/bgp_addpath.h"
92 #include "bgpd/bgp_evpn_private.h"
93 #include "bgpd/bgp_evpn_mh.h"
94 #include "bgpd/bgp_mac.h"
96 DEFINE_MTYPE_STATIC(BGPD
, PEER_TX_SHUTDOWN_MSG
, "Peer shutdown message (TX)");
97 DEFINE_MTYPE_STATIC(BGPD
, BGP_EVPN_INFO
, "BGP EVPN instance information");
98 DEFINE_QOBJ_TYPE(bgp_master
);
99 DEFINE_QOBJ_TYPE(bgp
);
100 DEFINE_QOBJ_TYPE(peer
);
101 DEFINE_HOOK(bgp_inst_delete
, (struct bgp
*bgp
), (bgp
));
103 /* BGP process wide configuration. */
104 static struct bgp_master bgp_master
;
106 /* BGP process wide configuration pointer to export. */
107 struct bgp_master
*bm
;
109 /* BGP community-list. */
110 struct community_list_handler
*bgp_clist
;
112 unsigned int multipath_num
= MULTIPATH_NUM
;
114 /* Number of bgp instances configured for suppress fib config */
115 unsigned int bgp_suppress_fib_count
;
117 static void bgp_if_finish(struct bgp
*bgp
);
118 static void peer_drop_dynamic_neighbor(struct peer
*peer
);
120 extern struct zclient
*zclient
;
122 /* handle main socket creation or deletion */
123 static int bgp_check_main_socket(bool create
, struct bgp
*bgp
)
125 static int bgp_server_main_created
;
126 struct listnode
*node
;
130 if (bgp_server_main_created
)
132 if (list_isempty(bm
->addresses
)) {
133 if (bgp_socket(bgp
, bm
->port
, NULL
) < 0)
134 return BGP_ERR_INVALID_VALUE
;
136 for (ALL_LIST_ELEMENTS_RO(bm
->addresses
, node
, address
))
137 if (bgp_socket(bgp
, bm
->port
, address
) < 0)
138 return BGP_ERR_INVALID_VALUE
;
140 bgp_server_main_created
= 1;
143 if (!bgp_server_main_created
)
146 bgp_server_main_created
= 0;
150 void bgp_session_reset(struct peer
*peer
)
152 if (peer
->doppelganger
&& (peer
->doppelganger
->status
!= Deleted
)
153 && !(CHECK_FLAG(peer
->doppelganger
->flags
, PEER_FLAG_CONFIG_NODE
)))
154 peer_delete(peer
->doppelganger
);
156 BGP_EVENT_ADD(peer
, BGP_Stop
);
160 * During session reset, we may delete the doppelganger peer, which would
161 * be the next node to the current node. If the session reset was invoked
162 * during walk of peer list, we would end up accessing the freed next
163 * node. This function moves the next node along.
165 static void bgp_session_reset_safe(struct peer
*peer
, struct listnode
**nnode
)
170 n
= (nnode
) ? *nnode
: NULL
;
171 npeer
= (n
) ? listgetdata(n
) : NULL
;
173 if (peer
->doppelganger
&& (peer
->doppelganger
->status
!= Deleted
)
174 && !(CHECK_FLAG(peer
->doppelganger
->flags
,
175 PEER_FLAG_CONFIG_NODE
))) {
176 if (peer
->doppelganger
== npeer
)
177 /* nnode and *nnode are confirmed to be non-NULL here */
178 *nnode
= (*nnode
)->next
;
179 peer_delete(peer
->doppelganger
);
182 BGP_EVENT_ADD(peer
, BGP_Stop
);
185 /* BGP global flag manipulation. */
186 int bgp_option_set(int flag
)
190 case BGP_OPT_NO_LISTEN
:
191 case BGP_OPT_NO_ZEBRA
:
192 SET_FLAG(bm
->options
, flag
);
195 return BGP_ERR_INVALID_FLAG
;
200 int bgp_option_unset(int flag
)
204 case BGP_OPT_NO_ZEBRA
:
206 UNSET_FLAG(bm
->options
, flag
);
209 return BGP_ERR_INVALID_FLAG
;
214 int bgp_option_check(int flag
)
216 return CHECK_FLAG(bm
->options
, flag
);
219 /* set the bgp no-rib option during runtime and remove installed routes */
220 void bgp_option_norib_set_runtime(void)
223 struct listnode
*node
;
227 if (bgp_option_check(BGP_OPT_NO_FIB
))
230 bgp_option_set(BGP_OPT_NO_FIB
);
232 zlog_info("Disabled BGP route installation to RIB (Zebra)");
234 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, node
, bgp
)) {
235 FOREACH_AFI_SAFI (afi
, safi
) {
237 * Stop a crash, more work is needed
238 * here to properly add/remove these types of
241 if (!bgp_fibupd_safi(safi
))
244 bgp_zebra_withdraw_table_all_subtypes(bgp
, afi
, safi
);
248 zlog_info("All routes have been withdrawn from RIB (Zebra)");
251 /* unset the bgp no-rib option during runtime and announce routes to Zebra */
252 void bgp_option_norib_unset_runtime(void)
255 struct listnode
*node
;
259 if (!bgp_option_check(BGP_OPT_NO_FIB
))
262 bgp_option_unset(BGP_OPT_NO_FIB
);
264 zlog_info("Enabled BGP route installation to RIB (Zebra)");
266 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, node
, bgp
)) {
267 FOREACH_AFI_SAFI (afi
, safi
) {
269 * Stop a crash, more work is needed
270 * here to properly add/remove these types
271 * of routes from zebra
273 if (!bgp_fibupd_safi(safi
))
276 bgp_zebra_announce_table_all_subtypes(bgp
, afi
, safi
);
280 zlog_info("All routes have been installed in RIB (Zebra)");
283 /* Internal function to set BGP structure configureation flag. */
284 static void bgp_config_set(struct bgp
*bgp
, int config
)
286 SET_FLAG(bgp
->config
, config
);
289 static void bgp_config_unset(struct bgp
*bgp
, int config
)
291 UNSET_FLAG(bgp
->config
, config
);
294 static int bgp_config_check(struct bgp
*bgp
, int config
)
296 return CHECK_FLAG(bgp
->config
, config
);
299 /* Set BGP router identifier; distinguish between explicit config and other
302 static int bgp_router_id_set(struct bgp
*bgp
, const struct in_addr
*id
,
306 struct listnode
*node
, *nnode
;
308 if (IPV4_ADDR_SAME(&bgp
->router_id
, id
))
311 /* EVPN uses router id in RD, withdraw them */
312 if (is_evpn_enabled())
313 bgp_evpn_handle_router_id_update(bgp
, true);
315 vpn_handle_router_id_update(bgp
, true, is_config
);
317 IPV4_ADDR_COPY(&bgp
->router_id
, id
);
319 /* Set all peer's local identifier with this value. */
320 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
321 IPV4_ADDR_COPY(&peer
->local_id
, id
);
323 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
324 peer
->last_reset
= PEER_DOWN_RID_CHANGE
;
325 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
326 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
330 /* EVPN uses router id in RD, update them */
331 if (is_evpn_enabled())
332 bgp_evpn_handle_router_id_update(bgp
, false);
334 vpn_handle_router_id_update(bgp
, false, is_config
);
339 void bgp_router_id_zebra_bump(vrf_id_t vrf_id
, const struct prefix
*router_id
)
341 struct listnode
*node
, *nnode
;
343 struct in_addr
*addr
= NULL
;
345 if (router_id
!= NULL
)
346 addr
= (struct in_addr
*)&(router_id
->u
.prefix4
);
348 if (vrf_id
== VRF_DEFAULT
) {
349 /* Router-id change for default VRF has to also update all
351 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
)) {
352 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
)
356 bgp
->router_id_zebra
= *addr
;
358 addr
= &bgp
->router_id_zebra
;
360 if (!bgp
->router_id_static
.s_addr
) {
361 /* Router ID is updated if there are no active
364 if (bgp
->established_peers
== 0) {
365 if (BGP_DEBUG(zebra
, ZEBRA
))
367 "RID change : vrf %s(%u), RTR ID %pI4",
371 * if old router-id was 0x0, set flag
372 * to use this new value
374 bgp_router_id_set(bgp
, addr
,
375 (bgp
->router_id
.s_addr
383 bgp
= bgp_lookup_by_vrf_id(vrf_id
);
386 bgp
->router_id_zebra
= *addr
;
388 addr
= &bgp
->router_id_zebra
;
390 if (!bgp
->router_id_static
.s_addr
) {
391 /* Router ID is updated if there are no active
394 if (bgp
->established_peers
== 0) {
395 if (BGP_DEBUG(zebra
, ZEBRA
))
397 "RID change : vrf %s(%u), RTR ID %pI4",
401 * if old router-id was 0x0, set flag
402 * to use this new value
404 bgp_router_id_set(bgp
, addr
,
405 (bgp
->router_id
.s_addr
416 void bgp_router_id_static_set(struct bgp
*bgp
, struct in_addr id
)
418 bgp
->router_id_static
= id
;
419 bgp_router_id_set(bgp
,
420 id
.s_addr
!= INADDR_ANY
? &id
: &bgp
->router_id_zebra
,
421 true /* is config */);
424 void bm_wait_for_fib_set(bool set
)
426 bool send_msg
= false;
428 if (bm
->wait_for_fib
== set
)
431 bm
->wait_for_fib
= set
;
433 if (bgp_suppress_fib_count
== 0)
435 bgp_suppress_fib_count
++;
437 bgp_suppress_fib_count
--;
438 if (bgp_suppress_fib_count
== 0)
442 if (send_msg
&& zclient
)
443 zebra_route_notify_send(ZEBRA_ROUTE_NOTIFY_REQUEST
,
447 /* Set the suppress fib pending for the bgp configuration */
448 void bgp_suppress_fib_pending_set(struct bgp
*bgp
, bool set
)
450 bool send_msg
= false;
452 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
)
456 SET_FLAG(bgp
->flags
, BGP_FLAG_SUPPRESS_FIB_PENDING
);
457 /* Send msg to zebra for the first instance of bgp enabled
460 if (bgp_suppress_fib_count
== 0)
462 bgp_suppress_fib_count
++;
464 UNSET_FLAG(bgp
->flags
, BGP_FLAG_SUPPRESS_FIB_PENDING
);
465 bgp_suppress_fib_count
--;
467 /* Send msg to zebra if there are no instances enabled
470 if (bgp_suppress_fib_count
== 0)
473 /* Send route notify request to RIB */
475 if (BGP_DEBUG(zebra
, ZEBRA
))
476 zlog_debug("Sending ZEBRA_ROUTE_NOTIFY_REQUEST");
479 zebra_route_notify_send(ZEBRA_ROUTE_NOTIFY_REQUEST
,
484 /* BGP's cluster-id control. */
485 void bgp_cluster_id_set(struct bgp
*bgp
, struct in_addr
*cluster_id
)
488 struct listnode
*node
, *nnode
;
490 if (bgp_config_check(bgp
, BGP_CONFIG_CLUSTER_ID
)
491 && IPV4_ADDR_SAME(&bgp
->cluster_id
, cluster_id
))
494 IPV4_ADDR_COPY(&bgp
->cluster_id
, cluster_id
);
495 bgp_config_set(bgp
, BGP_CONFIG_CLUSTER_ID
);
497 /* Clear all IBGP peer. */
498 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
499 if (peer
->sort
!= BGP_PEER_IBGP
)
502 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
503 peer
->last_reset
= PEER_DOWN_CLID_CHANGE
;
504 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
505 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
510 void bgp_cluster_id_unset(struct bgp
*bgp
)
513 struct listnode
*node
, *nnode
;
515 if (!bgp_config_check(bgp
, BGP_CONFIG_CLUSTER_ID
))
518 bgp
->cluster_id
.s_addr
= 0;
519 bgp_config_unset(bgp
, BGP_CONFIG_CLUSTER_ID
);
521 /* Clear all IBGP peer. */
522 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
523 if (peer
->sort
!= BGP_PEER_IBGP
)
526 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
527 peer
->last_reset
= PEER_DOWN_CLID_CHANGE
;
528 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
529 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
534 /* BGP timer configuration. */
535 void bgp_timers_set(struct bgp
*bgp
, uint32_t keepalive
, uint32_t holdtime
,
536 uint32_t connect_retry
, uint32_t delayopen
)
538 bgp
->default_keepalive
=
539 (keepalive
< holdtime
/ 3 ? keepalive
: holdtime
/ 3);
540 bgp
->default_holdtime
= holdtime
;
541 bgp
->default_connect_retry
= connect_retry
;
542 bgp
->default_delayopen
= delayopen
;
545 /* mostly for completeness - CLI uses its own defaults */
546 void bgp_timers_unset(struct bgp
*bgp
)
548 bgp
->default_keepalive
= BGP_DEFAULT_KEEPALIVE
;
549 bgp
->default_holdtime
= BGP_DEFAULT_HOLDTIME
;
550 bgp
->default_connect_retry
= BGP_DEFAULT_CONNECT_RETRY
;
551 bgp
->default_delayopen
= BGP_DEFAULT_DELAYOPEN
;
554 /* BGP confederation configuration. */
555 void bgp_confederation_id_set(struct bgp
*bgp
, as_t as
)
558 struct listnode
*node
, *nnode
;
564 /* Remember - were we doing confederation before? */
565 already_confed
= bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
);
567 bgp_config_set(bgp
, BGP_CONFIG_CONFEDERATION
);
569 /* If we were doing confederation already, this is just an external
570 AS change. Just Reset EBGP sessions, not CONFED sessions. If we
571 were not doing confederation before, reset all EBGP sessions. */
572 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
573 enum bgp_peer_sort ptype
= peer_sort(peer
);
575 /* We're looking for peers who's AS is not local or part of our
577 if (already_confed
) {
578 if (ptype
== BGP_PEER_EBGP
) {
580 if (BGP_IS_VALID_STATE_FOR_NOTIF(
583 PEER_DOWN_CONFED_ID_CHANGE
;
585 peer
, BGP_NOTIFY_CEASE
,
586 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
588 bgp_session_reset_safe(peer
, &nnode
);
591 /* Not doign confederation before, so reset every
594 if (ptype
!= BGP_PEER_IBGP
) {
595 /* Reset the local_as to be our EBGP one */
596 if (ptype
== BGP_PEER_EBGP
)
598 if (BGP_IS_VALID_STATE_FOR_NOTIF(
601 PEER_DOWN_CONFED_ID_CHANGE
;
603 peer
, BGP_NOTIFY_CEASE
,
604 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
606 bgp_session_reset_safe(peer
, &nnode
);
613 void bgp_confederation_id_unset(struct bgp
*bgp
)
616 struct listnode
*node
, *nnode
;
619 bgp_config_unset(bgp
, BGP_CONFIG_CONFEDERATION
);
621 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
622 /* We're looking for peers who's AS is not local */
623 if (peer_sort(peer
) != BGP_PEER_IBGP
) {
624 peer
->local_as
= bgp
->as
;
625 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
626 peer
->last_reset
= PEER_DOWN_CONFED_ID_CHANGE
;
627 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
628 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
632 bgp_session_reset_safe(peer
, &nnode
);
637 /* Is an AS part of the confed or not? */
638 bool bgp_confederation_peers_check(struct bgp
*bgp
, as_t as
)
645 for (i
= 0; i
< bgp
->confed_peers_cnt
; i
++)
646 if (bgp
->confed_peers
[i
] == as
)
652 /* Add an AS to the confederation set. */
653 void bgp_confederation_peers_add(struct bgp
*bgp
, as_t as
)
656 struct listnode
*node
, *nnode
;
661 if (bgp_confederation_peers_check(bgp
, as
))
665 XREALLOC(MTYPE_BGP_CONFED_LIST
, bgp
->confed_peers
,
666 (bgp
->confed_peers_cnt
+ 1) * sizeof(as_t
));
668 bgp
->confed_peers
[bgp
->confed_peers_cnt
] = as
;
669 bgp
->confed_peers_cnt
++;
671 if (bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
)) {
672 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
673 if (peer
->as
== as
) {
674 (void)peer_sort(peer
);
675 peer
->local_as
= bgp
->as
;
676 if (BGP_IS_VALID_STATE_FOR_NOTIF(
679 PEER_DOWN_CONFED_PEER_CHANGE
;
681 peer
, BGP_NOTIFY_CEASE
,
682 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
684 bgp_session_reset_safe(peer
, &nnode
);
690 /* Delete an AS from the confederation set. */
691 void bgp_confederation_peers_remove(struct bgp
*bgp
, as_t as
)
696 struct listnode
*node
, *nnode
;
701 if (!bgp_confederation_peers_check(bgp
, as
))
704 for (i
= 0; i
< bgp
->confed_peers_cnt
; i
++)
705 if (bgp
->confed_peers
[i
] == as
)
706 for (j
= i
+ 1; j
< bgp
->confed_peers_cnt
; j
++)
707 bgp
->confed_peers
[j
- 1] = bgp
->confed_peers
[j
];
709 bgp
->confed_peers_cnt
--;
711 if (bgp
->confed_peers_cnt
== 0) {
712 if (bgp
->confed_peers
)
713 XFREE(MTYPE_BGP_CONFED_LIST
, bgp
->confed_peers
);
714 bgp
->confed_peers
= NULL
;
717 XREALLOC(MTYPE_BGP_CONFED_LIST
, bgp
->confed_peers
,
718 bgp
->confed_peers_cnt
* sizeof(as_t
));
720 /* Now reset any peer who's remote AS has just been removed from the
722 if (bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
)) {
723 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
724 if (peer
->as
== as
) {
725 (void)peer_sort(peer
);
726 peer
->local_as
= bgp
->confed_id
;
727 if (BGP_IS_VALID_STATE_FOR_NOTIF(
730 PEER_DOWN_CONFED_PEER_CHANGE
;
732 peer
, BGP_NOTIFY_CEASE
,
733 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
735 bgp_session_reset_safe(peer
, &nnode
);
741 /* Local preference configuration. */
742 void bgp_default_local_preference_set(struct bgp
*bgp
, uint32_t local_pref
)
747 bgp
->default_local_pref
= local_pref
;
750 void bgp_default_local_preference_unset(struct bgp
*bgp
)
755 bgp
->default_local_pref
= BGP_DEFAULT_LOCAL_PREF
;
758 /* Local preference configuration. */
759 void bgp_default_subgroup_pkt_queue_max_set(struct bgp
*bgp
,
765 bgp
->default_subgroup_pkt_queue_max
= queue_size
;
768 void bgp_default_subgroup_pkt_queue_max_unset(struct bgp
*bgp
)
772 bgp
->default_subgroup_pkt_queue_max
=
773 BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX
;
776 /* Listen limit configuration. */
777 void bgp_listen_limit_set(struct bgp
*bgp
, int listen_limit
)
782 bgp
->dynamic_neighbors_limit
= listen_limit
;
785 void bgp_listen_limit_unset(struct bgp
*bgp
)
790 bgp
->dynamic_neighbors_limit
= BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT
;
793 int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi
, iana_safi_t pkt_safi
,
794 afi_t
*afi
, safi_t
*safi
)
796 /* Map from IANA values to internal values, return error if
797 * values are unrecognized.
799 *afi
= afi_iana2int(pkt_afi
);
800 *safi
= safi_iana2int(pkt_safi
);
801 if (*afi
== AFI_MAX
|| *safi
== SAFI_MAX
)
807 int bgp_map_afi_safi_int2iana(afi_t afi
, safi_t safi
, iana_afi_t
*pkt_afi
,
808 iana_safi_t
*pkt_safi
)
810 /* Map from internal values to IANA values, return error if
811 * internal values are bad (unexpected).
813 if (afi
== AFI_MAX
|| safi
== SAFI_MAX
)
815 *pkt_afi
= afi_int2iana(afi
);
816 *pkt_safi
= safi_int2iana(safi
);
820 struct peer_af
*peer_af_create(struct peer
*peer
, afi_t afi
, safi_t safi
)
829 afid
= afindex(afi
, safi
);
830 if (afid
>= BGP_AF_MAX
)
834 assert(peer
->peer_af_array
[afid
] == NULL
);
836 /* Allocate new peer af */
837 af
= XCALLOC(MTYPE_BGP_PEER_AF
, sizeof(struct peer_af
));
839 peer
->peer_af_array
[afid
] = af
;
844 bgp
->af_peer_count
[afi
][safi
]++;
849 struct peer_af
*peer_af_find(struct peer
*peer
, afi_t afi
, safi_t safi
)
856 afid
= afindex(afi
, safi
);
857 if (afid
>= BGP_AF_MAX
)
860 return peer
->peer_af_array
[afid
];
863 int peer_af_delete(struct peer
*peer
, afi_t afi
, safi_t safi
)
872 afid
= afindex(afi
, safi
);
873 if (afid
>= BGP_AF_MAX
)
876 af
= peer
->peer_af_array
[afid
];
881 bgp_soft_reconfig_table_task_cancel(bgp
, bgp
->rib
[afi
][safi
], peer
);
883 bgp_stop_announce_route_timer(af
);
885 if (PAF_SUBGRP(af
)) {
886 if (BGP_DEBUG(update_groups
, UPDATE_GROUPS
))
887 zlog_debug("u%" PRIu64
":s%" PRIu64
" remove peer %s",
888 af
->subgroup
->update_group
->id
,
889 af
->subgroup
->id
, peer
->host
);
893 update_subgroup_remove_peer(af
->subgroup
, af
);
895 if (bgp
->af_peer_count
[afi
][safi
])
896 bgp
->af_peer_count
[afi
][safi
]--;
898 peer
->peer_af_array
[afid
] = NULL
;
899 XFREE(MTYPE_BGP_PEER_AF
, af
);
903 /* Peer comparison function for sorting. */
904 int peer_cmp(struct peer
*p1
, struct peer
*p2
)
906 if (p1
->group
&& !p2
->group
)
909 if (!p1
->group
&& p2
->group
)
912 if (p1
->group
== p2
->group
) {
913 if (p1
->conf_if
&& !p2
->conf_if
)
916 if (!p1
->conf_if
&& p2
->conf_if
)
919 if (p1
->conf_if
&& p2
->conf_if
)
920 return if_cmp_name_func(p1
->conf_if
, p2
->conf_if
);
922 return strcmp(p1
->group
->name
, p2
->group
->name
);
924 return sockunion_cmp(&p1
->su
, &p2
->su
);
927 static unsigned int peer_hash_key_make(const void *p
)
929 const struct peer
*peer
= p
;
930 return sockunion_hash(&peer
->su
);
933 static bool peer_hash_same(const void *p1
, const void *p2
)
935 const struct peer
*peer1
= p1
;
936 const struct peer
*peer2
= p2
;
937 return (sockunion_same(&peer1
->su
, &peer2
->su
)
938 && CHECK_FLAG(peer1
->flags
, PEER_FLAG_CONFIG_NODE
)
939 == CHECK_FLAG(peer2
->flags
, PEER_FLAG_CONFIG_NODE
));
942 void peer_flag_inherit(struct peer
*peer
, uint64_t flag
)
946 /* Skip if peer is not a peer-group member. */
947 if (!peer_group_active(peer
))
950 /* Unset override flag to signal inheritance from peer-group. */
951 UNSET_FLAG(peer
->flags_override
, flag
);
954 * Inherit flag state from peer-group. If the flag of the peer-group is
955 * not being inverted, the peer must inherit the inverse of the current
956 * peer-group flag state.
958 group_val
= CHECK_FLAG(peer
->group
->conf
->flags
, flag
);
959 if (!CHECK_FLAG(peer
->group
->conf
->flags_invert
, flag
)
960 && CHECK_FLAG(peer
->flags_invert
, flag
))
961 COND_FLAG(peer
->flags
, flag
, !group_val
);
963 COND_FLAG(peer
->flags
, flag
, group_val
);
966 int peer_af_flag_check(struct peer
*peer
, afi_t afi
, safi_t safi
, uint32_t flag
)
968 return CHECK_FLAG(peer
->af_flags
[afi
][safi
], flag
);
971 void peer_af_flag_inherit(struct peer
*peer
, afi_t afi
, safi_t safi
,
976 /* Skip if peer is not a peer-group member. */
977 if (!peer_group_active(peer
))
980 /* Unset override flag to signal inheritance from peer-group. */
981 UNSET_FLAG(peer
->af_flags_override
[afi
][safi
], flag
);
984 * Inherit flag state from peer-group. If the flag of the peer-group is
985 * not being inverted, the peer must inherit the inverse of the current
986 * peer-group flag state.
988 group_val
= CHECK_FLAG(peer
->group
->conf
->af_flags
[afi
][safi
], flag
);
989 if (!CHECK_FLAG(peer
->group
->conf
->af_flags_invert
[afi
][safi
], flag
)
990 && CHECK_FLAG(peer
->af_flags_invert
[afi
][safi
], flag
))
991 COND_FLAG(peer
->af_flags
[afi
][safi
], flag
, !group_val
);
993 COND_FLAG(peer
->af_flags
[afi
][safi
], flag
, group_val
);
996 /* Check peer's AS number and determines if this peer is IBGP or EBGP */
997 static inline enum bgp_peer_sort
peer_calc_sort(struct peer
*peer
)
1004 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
1005 if (peer
->as_type
== AS_INTERNAL
)
1006 return BGP_PEER_IBGP
;
1008 else if (peer
->as_type
== AS_EXTERNAL
)
1009 return BGP_PEER_EBGP
;
1011 else if (peer
->as_type
== AS_SPECIFIED
&& peer
->as
) {
1013 return (bgp
->as
== peer
->as
? BGP_PEER_IBGP
1020 assert(peer
->group
);
1021 peer1
= listnode_head(peer
->group
->peer
);
1026 return BGP_PEER_INTERNAL
;
1030 if (bgp
&& CHECK_FLAG(bgp
->config
, BGP_CONFIG_CONFEDERATION
)) {
1031 if (peer
->local_as
== 0)
1032 return BGP_PEER_INTERNAL
;
1034 if (peer
->local_as
== peer
->as
) {
1035 if (bgp
->as
== bgp
->confed_id
) {
1036 if (peer
->local_as
== bgp
->as
)
1037 return BGP_PEER_IBGP
;
1039 return BGP_PEER_EBGP
;
1041 if (peer
->local_as
== bgp
->confed_id
)
1042 return BGP_PEER_EBGP
;
1044 return BGP_PEER_IBGP
;
1048 if (bgp_confederation_peers_check(bgp
, peer
->as
))
1049 return BGP_PEER_CONFED
;
1051 return BGP_PEER_EBGP
;
1053 if (peer
->as_type
== AS_UNSPECIFIED
) {
1054 /* check if in peer-group with AS information */
1056 && (peer
->group
->conf
->as_type
!= AS_UNSPECIFIED
)) {
1057 if (peer
->group
->conf
->as_type
1060 == peer
->group
->conf
->as
)
1061 return BGP_PEER_IBGP
;
1063 return BGP_PEER_EBGP
;
1064 } else if (peer
->group
->conf
->as_type
1066 return BGP_PEER_IBGP
;
1068 return BGP_PEER_EBGP
;
1070 /* no AS information anywhere, let caller know */
1071 return BGP_PEER_UNSPECIFIED
;
1072 } else if (peer
->as_type
!= AS_SPECIFIED
)
1073 return (peer
->as_type
== AS_INTERNAL
? BGP_PEER_IBGP
1076 return (peer
->local_as
== 0
1078 : peer
->local_as
== peer
->as
? BGP_PEER_IBGP
1083 /* Calculate and cache the peer "sort" */
1084 enum bgp_peer_sort
peer_sort(struct peer
*peer
)
1086 peer
->sort
= peer_calc_sort(peer
);
1090 enum bgp_peer_sort
peer_sort_lookup(struct peer
*peer
)
1095 static void peer_free(struct peer
*peer
)
1100 assert(peer
->status
== Deleted
);
1104 /* this /ought/ to have been done already through bgp_stop earlier,
1105 * but just to be sure..
1107 bgp_timer_set(peer
);
1108 bgp_reads_off(peer
);
1109 bgp_writes_off(peer
);
1110 assert(!peer
->t_write
);
1111 assert(!peer
->t_read
);
1112 BGP_EVENT_FLUSH(peer
);
1114 pthread_mutex_destroy(&peer
->io_mtx
);
1116 /* Free connected nexthop, if present */
1117 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
)
1118 && !peer_dynamic_neighbor(peer
))
1119 bgp_delete_connected_nexthop(family2afi(peer
->su
.sa
.sa_family
),
1122 FOREACH_AFI_SAFI (afi
, safi
) {
1123 if (peer
->filter
[afi
][safi
].advmap
.aname
)
1124 XFREE(MTYPE_BGP_FILTER_NAME
,
1125 peer
->filter
[afi
][safi
].advmap
.aname
);
1126 if (peer
->filter
[afi
][safi
].advmap
.cname
)
1127 XFREE(MTYPE_BGP_FILTER_NAME
,
1128 peer
->filter
[afi
][safi
].advmap
.cname
);
1131 XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG
, peer
->tx_shutdown_message
);
1133 XFREE(MTYPE_PEER_DESC
, peer
->desc
);
1134 XFREE(MTYPE_BGP_PEER_HOST
, peer
->host
);
1135 XFREE(MTYPE_BGP_PEER_HOST
, peer
->domainname
);
1136 XFREE(MTYPE_BGP_PEER_IFNAME
, peer
->ifname
);
1138 /* Update source configuration. */
1139 if (peer
->update_source
) {
1140 sockunion_free(peer
->update_source
);
1141 peer
->update_source
= NULL
;
1144 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
1146 XFREE(MTYPE_BGP_NOTIFICATION
, peer
->notify
.data
);
1147 memset(&peer
->notify
, 0, sizeof(struct bgp_notify
));
1149 if (peer
->clear_node_queue
)
1150 work_queue_free_and_null(&peer
->clear_node_queue
);
1152 bgp_sync_delete(peer
);
1154 XFREE(MTYPE_PEER_CONF_IF
, peer
->conf_if
);
1156 /* Remove BFD configuration. */
1157 if (peer
->bfd_config
)
1158 bgp_peer_remove_bfd_config(peer
);
1160 FOREACH_AFI_SAFI (afi
, safi
)
1161 bgp_addpath_set_peer_type(peer
, afi
, safi
, BGP_ADDPATH_NONE
);
1163 bgp_unlock(peer
->bgp
);
1165 memset(peer
, 0, sizeof(struct peer
));
1167 XFREE(MTYPE_BGP_PEER
, peer
);
1170 /* increase reference count on a struct peer */
1171 struct peer
*peer_lock_with_caller(const char *name
, struct peer
*peer
)
1173 assert(peer
&& (peer
->lock
>= 0));
1180 /* decrease reference count on a struct peer
1181 * struct peer is freed and NULL returned if last reference
1183 struct peer
*peer_unlock_with_caller(const char *name
, struct peer
*peer
)
1185 assert(peer
&& (peer
->lock
> 0));
1189 if (peer
->lock
== 0) {
1196 /* BGP GR changes */
1198 int bgp_global_gr_init(struct bgp
*bgp
)
1200 if (BGP_DEBUG(graceful_restart
, GRACEFUL_RESTART
))
1201 zlog_debug("%s called ..", __func__
);
1203 int local_GLOBAL_GR_FSM
[BGP_GLOBAL_GR_MODE
][BGP_GLOBAL_GR_EVENT_CMD
] = {
1204 /* GLOBAL_HELPER Mode */
1207 /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/
1208 GLOBAL_GR
, GLOBAL_INVALID
,
1209 /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/
1210 GLOBAL_DISABLE
, GLOBAL_INVALID
1212 /* GLOBAL_GR Mode */
1215 /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/
1216 GLOBAL_GR
, GLOBAL_HELPER
,
1217 /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/
1218 GLOBAL_DISABLE
, GLOBAL_INVALID
1220 /* GLOBAL_DISABLE Mode */
1223 /*GLOBAL_GR_cmd */ /*no_Global_GR_cmd*/
1224 GLOBAL_GR
, GLOBAL_INVALID
,
1225 /*GLOBAL_DISABLE_cmd*//*no_Global_Disable_cmd*/
1226 GLOBAL_INVALID
, GLOBAL_HELPER
1228 /* GLOBAL_INVALID Mode */
1231 /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/
1232 GLOBAL_INVALID
, GLOBAL_INVALID
,
1233 /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/
1234 GLOBAL_INVALID
, GLOBAL_INVALID
1237 memcpy(bgp
->GLOBAL_GR_FSM
, local_GLOBAL_GR_FSM
,
1238 sizeof(local_GLOBAL_GR_FSM
));
1240 bgp
->global_gr_present_state
= GLOBAL_HELPER
;
1241 bgp
->present_zebra_gr_state
= ZEBRA_GR_DISABLE
;
1243 return BGP_GR_SUCCESS
;
1246 int bgp_peer_gr_init(struct peer
*peer
)
1248 if (BGP_DEBUG(graceful_restart
, GRACEFUL_RESTART
))
1249 zlog_debug("%s called ..", __func__
);
1251 struct bgp_peer_gr local_Peer_GR_FSM
[BGP_PEER_GR_MODE
]
1252 [BGP_PEER_GR_EVENT_CMD
] = {
1254 /* PEER_HELPER Mode */
1255 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1256 { PEER_GR
, bgp_peer_gr_action
}, {PEER_INVALID
, NULL
},
1257 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1258 {PEER_DISABLE
, bgp_peer_gr_action
}, {PEER_INVALID
, NULL
},
1259 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1260 { PEER_INVALID
, NULL
}, {PEER_GLOBAL_INHERIT
,
1261 bgp_peer_gr_action
}
1265 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1266 { PEER_INVALID
, NULL
}, { PEER_GLOBAL_INHERIT
,
1267 bgp_peer_gr_action
},
1268 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1269 {PEER_DISABLE
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1270 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1271 { PEER_HELPER
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
}
1274 /* PEER_DISABLE Mode */
1275 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1276 { PEER_GR
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1277 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1278 { PEER_INVALID
, NULL
}, { PEER_GLOBAL_INHERIT
,
1279 bgp_peer_gr_action
},
1280 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1281 { PEER_HELPER
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
}
1284 /* PEER_INVALID Mode */
1285 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1286 { PEER_INVALID
, NULL
}, { PEER_INVALID
, NULL
},
1287 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1288 { PEER_INVALID
, NULL
}, { PEER_INVALID
, NULL
},
1289 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1290 { PEER_INVALID
, NULL
}, { PEER_INVALID
, NULL
},
1293 /* PEER_GLOBAL_INHERIT Mode */
1294 /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */
1295 { PEER_GR
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1296 /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */
1297 { PEER_DISABLE
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
},
1298 /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */
1299 { PEER_HELPER
, bgp_peer_gr_action
}, { PEER_INVALID
, NULL
}
1302 memcpy(&peer
->PEER_GR_FSM
, local_Peer_GR_FSM
,
1303 sizeof(local_Peer_GR_FSM
));
1304 peer
->peer_gr_present_state
= PEER_GLOBAL_INHERIT
;
1305 bgp_peer_move_to_gr_mode(peer
, PEER_GLOBAL_INHERIT
);
1307 return BGP_GR_SUCCESS
;
1310 static void bgp_srv6_init(struct bgp
*bgp
)
1312 bgp
->srv6_enabled
= false;
1313 memset(bgp
->srv6_locator_name
, 0, sizeof(bgp
->srv6_locator_name
));
1314 bgp
->srv6_locator_chunks
= list_new();
1315 bgp
->srv6_functions
= list_new();
1318 static void bgp_srv6_cleanup(struct bgp
*bgp
)
1320 if (bgp
->srv6_locator_chunks
)
1321 list_delete(&bgp
->srv6_locator_chunks
);
1322 if (bgp
->srv6_functions
)
1323 list_delete(&bgp
->srv6_functions
);
1326 /* Allocate new peer object, implicitely locked. */
1327 struct peer
*peer_new(struct bgp
*bgp
)
1334 /* bgp argument is absolutely required */
1337 /* Allocate new peer. */
1338 peer
= XCALLOC(MTYPE_BGP_PEER
, sizeof(struct peer
));
1340 /* Set default value. */
1342 peer
->v_start
= BGP_INIT_START_TIMER
;
1343 peer
->v_connect
= bgp
->default_connect_retry
;
1344 peer
->status
= Idle
;
1345 peer
->ostatus
= Idle
;
1346 peer
->cur_event
= peer
->last_event
= peer
->last_major_event
= 0;
1347 peer
->bgp
= bgp_lock(bgp
);
1348 peer
= peer_lock(peer
); /* initial reference */
1349 peer
->local_role
= ROLE_UNDEFINED
;
1350 peer
->remote_role
= ROLE_UNDEFINED
;
1351 peer
->password
= NULL
;
1352 peer
->max_packet_size
= BGP_STANDARD_MESSAGE_MAX_PACKET_SIZE
;
1354 /* Set default flags. */
1355 FOREACH_AFI_SAFI (afi
, safi
) {
1356 SET_FLAG(peer
->af_flags
[afi
][safi
], PEER_FLAG_SEND_COMMUNITY
);
1357 SET_FLAG(peer
->af_flags
[afi
][safi
],
1358 PEER_FLAG_SEND_EXT_COMMUNITY
);
1359 SET_FLAG(peer
->af_flags
[afi
][safi
],
1360 PEER_FLAG_SEND_LARGE_COMMUNITY
);
1362 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
1363 PEER_FLAG_SEND_COMMUNITY
);
1364 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
1365 PEER_FLAG_SEND_EXT_COMMUNITY
);
1366 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
1367 PEER_FLAG_SEND_LARGE_COMMUNITY
);
1368 peer
->addpath_type
[afi
][safi
] = BGP_ADDPATH_NONE
;
1369 peer
->soo
[afi
][safi
] = NULL
;
1372 /* set nexthop-unchanged for l2vpn evpn by default */
1373 SET_FLAG(peer
->af_flags
[AFI_L2VPN
][SAFI_EVPN
],
1374 PEER_FLAG_NEXTHOP_UNCHANGED
);
1376 SET_FLAG(peer
->sflags
, PEER_STATUS_CAPABILITY_OPEN
);
1378 /* Initialize per peer bgp GR FSM */
1379 bgp_peer_gr_init(peer
);
1381 /* Create buffers. */
1382 peer
->ibuf
= stream_fifo_new();
1383 peer
->obuf
= stream_fifo_new();
1384 pthread_mutex_init(&peer
->io_mtx
, NULL
);
1386 /* We use a larger buffer for peer->obuf_work in the event that:
1387 * - We RX a BGP_UPDATE where the attributes alone are just
1388 * under BGP_EXTENDED_MESSAGE_MAX_PACKET_SIZE.
1389 * - The user configures an outbound route-map that does many as-path
1390 * prepends or adds many communities. At most they can have
1391 * CMD_ARGC_MAX args in a route-map so there is a finite limit on how
1392 * large they can make the attributes.
1394 * Having a buffer with BGP_MAX_PACKET_SIZE_OVERFLOW allows us to avoid
1395 * bounds checking for every single attribute as we construct an
1399 stream_new(BGP_MAX_PACKET_SIZE
+ BGP_MAX_PACKET_SIZE_OVERFLOW
);
1401 ringbuf_new(BGP_MAX_PACKET_SIZE
* BGP_READ_PACKET_MAX
);
1403 peer
->scratch
= stream_new(BGP_MAX_PACKET_SIZE
);
1405 bgp_sync_init(peer
);
1407 /* Get service port number. */
1408 sp
= getservbyname("bgp", "tcp");
1409 peer
->port
= (sp
== NULL
) ? BGP_PORT_DEFAULT
: ntohs(sp
->s_port
);
1411 QOBJ_REG(peer
, peer
);
1416 * This function is invoked when a duplicate peer structure associated with
1417 * a neighbor is being deleted. If this about-to-be-deleted structure is
1418 * the one with all the config, then we have to copy over the info.
1420 void peer_xfer_config(struct peer
*peer_dst
, struct peer
*peer_src
)
1422 struct peer_af
*paf
;
1430 /* The following function is used by both peer group config copy to
1431 * individual peer and when we transfer config
1433 if (peer_src
->change_local_as
)
1434 peer_dst
->change_local_as
= peer_src
->change_local_as
;
1436 /* peer flags apply */
1437 peer_dst
->flags
= peer_src
->flags
;
1439 peer_dst
->peer_gr_present_state
= peer_src
->peer_gr_present_state
;
1440 peer_dst
->peer_gr_new_status_flag
= peer_src
->peer_gr_new_status_flag
;
1442 peer_dst
->local_as
= peer_src
->local_as
;
1443 peer_dst
->port
= peer_src
->port
;
1444 /* copy tcp_mss value */
1445 peer_dst
->tcp_mss
= peer_src
->tcp_mss
;
1446 (void)peer_sort(peer_dst
);
1447 peer_dst
->rmap_type
= peer_src
->rmap_type
;
1448 peer_dst
->local_role
= peer_src
->local_role
;
1450 peer_dst
->max_packet_size
= peer_src
->max_packet_size
;
1453 peer_dst
->holdtime
= peer_src
->holdtime
;
1454 peer_dst
->keepalive
= peer_src
->keepalive
;
1455 peer_dst
->connect
= peer_src
->connect
;
1456 peer_dst
->delayopen
= peer_src
->delayopen
;
1457 peer_dst
->v_holdtime
= peer_src
->v_holdtime
;
1458 peer_dst
->v_keepalive
= peer_src
->v_keepalive
;
1459 peer_dst
->routeadv
= peer_src
->routeadv
;
1460 peer_dst
->v_routeadv
= peer_src
->v_routeadv
;
1461 peer_dst
->v_delayopen
= peer_src
->v_delayopen
;
1463 /* password apply */
1464 if (peer_src
->password
&& !peer_dst
->password
)
1465 peer_dst
->password
=
1466 XSTRDUP(MTYPE_PEER_PASSWORD
, peer_src
->password
);
1468 FOREACH_AFI_SAFI (afi
, safi
) {
1469 peer_dst
->afc
[afi
][safi
] = peer_src
->afc
[afi
][safi
];
1470 peer_dst
->af_flags
[afi
][safi
] = peer_src
->af_flags
[afi
][safi
];
1471 peer_dst
->allowas_in
[afi
][safi
] =
1472 peer_src
->allowas_in
[afi
][safi
];
1473 peer_dst
->weight
[afi
][safi
] = peer_src
->weight
[afi
][safi
];
1474 peer_dst
->addpath_type
[afi
][safi
] =
1475 peer_src
->addpath_type
[afi
][safi
];
1476 if (peer_src
->soo
[afi
][safi
]) {
1477 ecommunity_free(&peer_dst
->soo
[afi
][safi
]);
1478 peer_dst
->soo
[afi
][safi
] =
1479 ecommunity_dup(peer_src
->soo
[afi
][safi
]);
1483 for (afidx
= BGP_AF_START
; afidx
< BGP_AF_MAX
; afidx
++) {
1484 paf
= peer_src
->peer_af_array
[afidx
];
1486 if (!peer_af_find(peer_dst
, paf
->afi
, paf
->safi
))
1487 peer_af_create(peer_dst
, paf
->afi
, paf
->safi
);
1491 /* update-source apply */
1492 if (peer_src
->update_source
) {
1493 if (peer_dst
->update_source
)
1494 sockunion_free(peer_dst
->update_source
);
1495 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer_dst
->update_if
);
1496 peer_dst
->update_source
=
1497 sockunion_dup(peer_src
->update_source
);
1498 } else if (peer_src
->update_if
) {
1499 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer_dst
->update_if
);
1500 if (peer_dst
->update_source
) {
1501 sockunion_free(peer_dst
->update_source
);
1502 peer_dst
->update_source
= NULL
;
1504 peer_dst
->update_if
=
1505 XSTRDUP(MTYPE_PEER_UPDATE_SOURCE
, peer_src
->update_if
);
1508 if (peer_src
->ifname
) {
1509 XFREE(MTYPE_BGP_PEER_IFNAME
, peer_dst
->ifname
);
1512 XSTRDUP(MTYPE_BGP_PEER_IFNAME
, peer_src
->ifname
);
1516 static int bgp_peer_conf_if_to_su_update_v4(struct peer
*peer
,
1517 struct interface
*ifp
)
1519 struct connected
*ifc
;
1522 struct listnode
*node
;
1524 /* If our IPv4 address on the interface is /30 or /31, we can derive the
1525 * IPv4 address of the other end.
1527 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, ifc
)) {
1528 if (ifc
->address
&& (ifc
->address
->family
== AF_INET
)) {
1529 prefix_copy(&p
, CONNECTED_PREFIX(ifc
));
1530 if (p
.prefixlen
== 30) {
1531 peer
->su
.sa
.sa_family
= AF_INET
;
1532 addr
= ntohl(p
.u
.prefix4
.s_addr
);
1534 peer
->su
.sin
.sin_addr
.s_addr
=
1536 else if (addr
% 4 == 2)
1537 peer
->su
.sin
.sin_addr
.s_addr
=
1539 #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
1540 peer
->su
.sin
.sin_len
=
1541 sizeof(struct sockaddr_in
);
1542 #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
1544 } else if (p
.prefixlen
== 31) {
1545 peer
->su
.sa
.sa_family
= AF_INET
;
1546 addr
= ntohl(p
.u
.prefix4
.s_addr
);
1548 peer
->su
.sin
.sin_addr
.s_addr
=
1551 peer
->su
.sin
.sin_addr
.s_addr
=
1553 #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
1554 peer
->su
.sin
.sin_len
=
1555 sizeof(struct sockaddr_in
);
1556 #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
1558 } else if (bgp_debug_neighbor_events(peer
))
1560 "%s: IPv4 interface address is not /30 or /31, v4 session not started",
1568 static bool bgp_peer_conf_if_to_su_update_v6(struct peer
*peer
,
1569 struct interface
*ifp
)
1571 struct nbr_connected
*ifc_nbr
;
1573 /* Have we learnt the peer's IPv6 link-local address? */
1574 if (ifp
->nbr_connected
1575 && (ifc_nbr
= listnode_head(ifp
->nbr_connected
))) {
1576 peer
->su
.sa
.sa_family
= AF_INET6
;
1577 memcpy(&peer
->su
.sin6
.sin6_addr
, &ifc_nbr
->address
->u
.prefix
,
1578 sizeof(struct in6_addr
));
1580 peer
->su
.sin6
.sin6_len
= sizeof(struct sockaddr_in6
);
1582 peer
->su
.sin6
.sin6_scope_id
= ifp
->ifindex
;
1590 * Set or reset the peer address socketunion structure based on the
1591 * learnt/derived peer address. If the address has changed, update the
1592 * password on the listen socket, if needed.
1594 void bgp_peer_conf_if_to_su_update(struct peer
*peer
)
1596 struct interface
*ifp
;
1598 int peer_addr_updated
= 0;
1604 * Our peer structure is stored in the bgp->peerhash
1605 * release it before we modify anything.
1607 hash_release(peer
->bgp
->peerhash
, peer
);
1609 prev_family
= peer
->su
.sa
.sa_family
;
1610 if ((ifp
= if_lookup_by_name(peer
->conf_if
, peer
->bgp
->vrf_id
))) {
1612 /* If BGP unnumbered is not "v6only", we first see if we can
1614 * peer's IPv4 address.
1616 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_IFPEER_V6ONLY
))
1618 bgp_peer_conf_if_to_su_update_v4(peer
, ifp
);
1620 /* If "v6only" or we can't derive peer's IPv4 address, see if
1622 * learnt the peer's IPv6 link-local address. This is from the
1624 * IPv6 address in router advertisement.
1626 if (!peer_addr_updated
)
1628 bgp_peer_conf_if_to_su_update_v6(peer
, ifp
);
1630 /* If we could derive the peer address, we may need to install the
1632 * configured for the peer, if any, on the listen socket. Otherwise,
1634 * that peer's address is not available and uninstall the password, if
1637 if (peer_addr_updated
) {
1638 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
)
1639 && prev_family
== AF_UNSPEC
)
1642 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
)
1643 && prev_family
!= AF_UNSPEC
)
1644 bgp_md5_unset(peer
);
1645 peer
->su
.sa
.sa_family
= AF_UNSPEC
;
1646 memset(&peer
->su
.sin6
.sin6_addr
, 0, sizeof(struct in6_addr
));
1650 * Since our su changed we need to del/add peer to the peerhash
1652 (void)hash_get(peer
->bgp
->peerhash
, peer
, hash_alloc_intern
);
1655 void bgp_recalculate_afi_safi_bestpaths(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1657 struct bgp_dest
*dest
, *ndest
;
1658 struct bgp_table
*table
;
1660 for (dest
= bgp_table_top(bgp
->rib
[afi
][safi
]); dest
;
1661 dest
= bgp_route_next(dest
)) {
1662 table
= bgp_dest_get_bgp_table_info(dest
);
1663 if (table
!= NULL
) {
1664 /* Special handling for 2-level routing
1666 if (safi
== SAFI_MPLS_VPN
|| safi
== SAFI_ENCAP
1667 || safi
== SAFI_EVPN
) {
1668 for (ndest
= bgp_table_top(table
); ndest
;
1669 ndest
= bgp_route_next(ndest
))
1670 bgp_process(bgp
, ndest
, afi
, safi
);
1672 bgp_process(bgp
, dest
, afi
, safi
);
1677 /* Force a bestpath recalculation for all prefixes. This is used
1678 * when 'bgp bestpath' commands are entered.
1680 void bgp_recalculate_all_bestpaths(struct bgp
*bgp
)
1685 FOREACH_AFI_SAFI (afi
, safi
) {
1686 bgp_recalculate_afi_safi_bestpaths(bgp
, afi
, safi
);
1691 * Create new BGP peer.
1693 * conf_if and su are mutually exclusive if configuring from the cli.
1694 * If we are handing a doppelganger, then we *must* pass in both
1695 * the original peer's su and conf_if, so that we can appropriately
1696 * track the bgp->peerhash( ie we don't want to remove the current
1697 * one from the config ).
1699 struct peer
*peer_create(union sockunion
*su
, const char *conf_if
,
1700 struct bgp
*bgp
, as_t local_as
, as_t remote_as
,
1701 int as_type
, struct peer_group
*group
)
1705 char buf
[SU_ADDRSTRLEN
];
1709 peer
= peer_new(bgp
);
1711 peer
->conf_if
= XSTRDUP(MTYPE_PEER_CONF_IF
, conf_if
);
1715 bgp_peer_conf_if_to_su_update(peer
);
1716 XFREE(MTYPE_BGP_PEER_HOST
, peer
->host
);
1717 peer
->host
= XSTRDUP(MTYPE_BGP_PEER_HOST
, conf_if
);
1720 sockunion2str(su
, buf
, SU_ADDRSTRLEN
);
1721 XFREE(MTYPE_BGP_PEER_HOST
, peer
->host
);
1722 peer
->host
= XSTRDUP(MTYPE_BGP_PEER_HOST
, buf
);
1724 peer
->local_as
= local_as
;
1725 peer
->as
= remote_as
;
1726 peer
->as_type
= as_type
;
1727 peer
->local_id
= bgp
->router_id
;
1728 peer
->v_holdtime
= bgp
->default_holdtime
;
1729 peer
->v_keepalive
= bgp
->default_keepalive
;
1730 peer
->v_routeadv
= (peer_sort(peer
) == BGP_PEER_IBGP
)
1731 ? BGP_DEFAULT_IBGP_ROUTEADV
1732 : BGP_DEFAULT_EBGP_ROUTEADV
;
1733 if (bgp_config_inprocess())
1734 peer
->shut_during_cfg
= true;
1736 peer
= peer_lock(peer
); /* bgp peer list reference */
1737 peer
->group
= group
;
1738 listnode_add_sort(bgp
->peer
, peer
);
1739 (void)hash_get(bgp
->peerhash
, peer
, hash_alloc_intern
);
1741 /* Adjust update-group coalesce timer heuristics for # peers. */
1742 if (bgp
->heuristic_coalesce
) {
1743 long ct
= BGP_DEFAULT_SUBGROUP_COALESCE_TIME
1745 * BGP_PEER_ADJUST_SUBGROUP_COALESCE_TIME
);
1746 bgp
->coalesce_time
= MIN(BGP_MAX_SUBGROUP_COALESCE_TIME
, ct
);
1749 active
= peer_active(peer
);
1751 if (peer
->su
.sa
.sa_family
== AF_UNSPEC
)
1752 peer
->last_reset
= PEER_DOWN_NBR_ADDR
;
1754 peer
->last_reset
= PEER_DOWN_NOAFI_ACTIVATED
;
1757 /* Last read and reset time set */
1758 peer
->readtime
= peer
->resettime
= monotime(NULL
);
1760 /* Default TTL set. */
1761 peer
->ttl
= (peer
->sort
== BGP_PEER_IBGP
) ? MAXTTL
: BGP_DEFAULT_TTL
;
1763 /* Default configured keepalives count for shutdown rtt command */
1764 peer
->rtt_keepalive_conf
= 1;
1766 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
1768 /* If 'bgp default <afi>-<safi>' is configured, then activate the
1769 * neighbor for the corresponding address family. IPv4 Unicast is
1770 * the only address family enabled by default without expliict
1773 FOREACH_AFI_SAFI (afi
, safi
) {
1774 if (bgp
->default_af
[afi
][safi
]) {
1775 peer
->afc
[afi
][safi
] = 1;
1776 peer_af_create(peer
, afi
, safi
);
1780 /* auto shutdown if configured */
1781 if (bgp
->autoshutdown
)
1782 peer_flag_set(peer
, PEER_FLAG_SHUTDOWN
);
1783 /* Set up peer's events and timers. */
1784 else if (!active
&& peer_active(peer
))
1785 bgp_timer_set(peer
);
1787 bgp_peer_gr_flags_update(peer
);
1788 BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp
, bgp
->peer
);
1793 /* Make accept BGP peer. This function is only called from the test code */
1794 struct peer
*peer_create_accept(struct bgp
*bgp
)
1798 peer
= peer_new(bgp
);
1800 peer
= peer_lock(peer
); /* bgp peer list reference */
1801 listnode_add_sort(bgp
->peer
, peer
);
1807 * Return true if we have a peer configured to use this afi/safi
1809 bool bgp_afi_safi_peer_exists(struct bgp
*bgp
, afi_t afi
, safi_t safi
)
1811 struct listnode
*node
;
1814 for (ALL_LIST_ELEMENTS_RO(bgp
->peer
, node
, peer
)) {
1815 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
))
1818 if (peer
->afc
[afi
][safi
])
1825 /* Change peer's AS number. */
1826 void peer_as_change(struct peer
*peer
, as_t as
, int as_specified
)
1828 enum bgp_peer_sort origtype
, newtype
;
1831 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
1832 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
1833 peer
->last_reset
= PEER_DOWN_REMOTE_AS_CHANGE
;
1834 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
1835 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
1837 bgp_session_reset(peer
);
1839 origtype
= peer_sort_lookup(peer
);
1841 peer
->as_type
= as_specified
;
1843 if (bgp_config_check(peer
->bgp
, BGP_CONFIG_CONFEDERATION
)
1844 && !bgp_confederation_peers_check(peer
->bgp
, as
)
1845 && peer
->bgp
->as
!= as
)
1846 peer
->local_as
= peer
->bgp
->confed_id
;
1848 peer
->local_as
= peer
->bgp
->as
;
1850 newtype
= peer_sort(peer
);
1851 /* Advertisement-interval reset */
1852 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_ROUTEADV
)) {
1853 peer
->v_routeadv
= (newtype
== BGP_PEER_IBGP
)
1854 ? BGP_DEFAULT_IBGP_ROUTEADV
1855 : BGP_DEFAULT_EBGP_ROUTEADV
;
1859 if (newtype
== BGP_PEER_IBGP
)
1861 else if (origtype
== BGP_PEER_IBGP
)
1862 peer
->ttl
= BGP_DEFAULT_TTL
;
1864 /* reflector-client reset */
1865 if (newtype
!= BGP_PEER_IBGP
) {
1866 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_UNICAST
],
1867 PEER_FLAG_REFLECTOR_CLIENT
);
1868 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_MULTICAST
],
1869 PEER_FLAG_REFLECTOR_CLIENT
);
1870 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_LABELED_UNICAST
],
1871 PEER_FLAG_REFLECTOR_CLIENT
);
1872 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_MPLS_VPN
],
1873 PEER_FLAG_REFLECTOR_CLIENT
);
1874 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_ENCAP
],
1875 PEER_FLAG_REFLECTOR_CLIENT
);
1876 UNSET_FLAG(peer
->af_flags
[AFI_IP
][SAFI_FLOWSPEC
],
1877 PEER_FLAG_REFLECTOR_CLIENT
);
1878 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_UNICAST
],
1879 PEER_FLAG_REFLECTOR_CLIENT
);
1880 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_MULTICAST
],
1881 PEER_FLAG_REFLECTOR_CLIENT
);
1882 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_LABELED_UNICAST
],
1883 PEER_FLAG_REFLECTOR_CLIENT
);
1884 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_MPLS_VPN
],
1885 PEER_FLAG_REFLECTOR_CLIENT
);
1886 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_ENCAP
],
1887 PEER_FLAG_REFLECTOR_CLIENT
);
1888 UNSET_FLAG(peer
->af_flags
[AFI_IP6
][SAFI_FLOWSPEC
],
1889 PEER_FLAG_REFLECTOR_CLIENT
);
1890 UNSET_FLAG(peer
->af_flags
[AFI_L2VPN
][SAFI_EVPN
],
1891 PEER_FLAG_REFLECTOR_CLIENT
);
1894 /* local-as reset */
1895 if (newtype
!= BGP_PEER_EBGP
) {
1896 peer
->change_local_as
= 0;
1897 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS
);
1898 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
1899 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
1903 /* If peer does not exist, create new one. If peer already exists,
1904 set AS number to the peer. */
1905 int peer_remote_as(struct bgp
*bgp
, union sockunion
*su
, const char *conf_if
,
1906 as_t
*as
, int as_type
)
1912 peer
= peer_lookup_by_conf_if(bgp
, conf_if
);
1914 peer
= peer_lookup(bgp
, su
);
1917 /* Not allowed for a dynamic peer. */
1918 if (peer_dynamic_neighbor(peer
)) {
1920 return BGP_ERR_INVALID_FOR_DYNAMIC_PEER
;
1923 /* When this peer is a member of peer-group. */
1925 /* peer-group already has AS number/internal/external */
1926 if (peer
->group
->conf
->as
1927 || peer
->group
->conf
->as_type
) {
1928 /* Return peer group's AS number. */
1929 *as
= peer
->group
->conf
->as
;
1930 return BGP_ERR_PEER_GROUP_MEMBER
;
1933 enum bgp_peer_sort peer_sort_type
=
1934 peer_sort(peer
->group
->conf
);
1936 /* Explicit AS numbers used, compare AS numbers */
1937 if (as_type
== AS_SPECIFIED
) {
1938 if (((peer_sort_type
== BGP_PEER_IBGP
)
1939 && (bgp
->as
!= *as
))
1940 || ((peer_sort_type
== BGP_PEER_EBGP
)
1941 && (bgp
->as
== *as
))) {
1943 return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT
;
1946 /* internal/external used, compare as-types */
1947 if (((peer_sort_type
== BGP_PEER_IBGP
)
1948 && (as_type
!= AS_INTERNAL
))
1949 || ((peer_sort_type
== BGP_PEER_EBGP
)
1950 && (as_type
!= AS_EXTERNAL
))) {
1952 return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT
;
1957 /* Existing peer's AS number change. */
1958 if (((peer
->as_type
== AS_SPECIFIED
) && peer
->as
!= *as
)
1959 || (peer
->as_type
!= as_type
))
1960 peer_as_change(peer
, *as
, as_type
);
1963 return BGP_ERR_NO_INTERFACE_CONFIG
;
1965 /* If the peer is not part of our confederation, and its not an
1966 iBGP peer then spoof the source AS */
1967 if (bgp_config_check(bgp
, BGP_CONFIG_CONFEDERATION
)
1968 && !bgp_confederation_peers_check(bgp
, *as
)
1970 local_as
= bgp
->confed_id
;
1974 peer_create(su
, conf_if
, bgp
, local_as
, *as
, as_type
, NULL
);
1980 const char *bgp_get_name_by_role(uint8_t role
)
1985 case ROLE_RS_SERVER
:
1987 case ROLE_RS_CLIENT
:
1993 case ROLE_UNDEFINED
:
1999 static void peer_group2peer_config_copy_af(struct peer_group
*group
,
2000 struct peer
*peer
, afi_t afi
,
2004 int out
= FILTER_OUT
;
2006 uint64_t pflags_ovrd
;
2007 uint8_t *pfilter_ovrd
;
2011 pflags_ovrd
= peer
->af_flags_override
[afi
][safi
];
2012 pfilter_ovrd
= &peer
->filter_override
[afi
][safi
][in
];
2014 /* peer af_flags apply */
2015 flags_tmp
= conf
->af_flags
[afi
][safi
] & ~pflags_ovrd
;
2016 flags_tmp
^= conf
->af_flags_invert
[afi
][safi
]
2017 ^ peer
->af_flags_invert
[afi
][safi
];
2018 flags_tmp
&= ~pflags_ovrd
;
2020 UNSET_FLAG(peer
->af_flags
[afi
][safi
], ~pflags_ovrd
);
2021 SET_FLAG(peer
->af_flags
[afi
][safi
], flags_tmp
);
2022 SET_FLAG(peer
->af_flags_invert
[afi
][safi
],
2023 conf
->af_flags_invert
[afi
][safi
]);
2025 /* maximum-prefix */
2026 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_MAX_PREFIX
)) {
2027 PEER_ATTR_INHERIT(peer
, group
, pmax
[afi
][safi
]);
2028 PEER_ATTR_INHERIT(peer
, group
, pmax_threshold
[afi
][safi
]);
2029 PEER_ATTR_INHERIT(peer
, group
, pmax_restart
[afi
][safi
]);
2032 /* maximum-prefix-out */
2033 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_MAX_PREFIX_OUT
))
2034 PEER_ATTR_INHERIT(peer
, group
, pmax_out
[afi
][safi
]);
2037 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_ALLOWAS_IN
))
2038 PEER_ATTR_INHERIT(peer
, group
, allowas_in
[afi
][safi
]);
2041 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_SOO
))
2042 PEER_ATTR_INHERIT(peer
, group
, soo
[afi
][safi
]);
2045 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_WEIGHT
))
2046 PEER_ATTR_INHERIT(peer
, group
, weight
[afi
][safi
]);
2048 /* default-originate route-map */
2049 if (!CHECK_FLAG(pflags_ovrd
, PEER_FLAG_DEFAULT_ORIGINATE
)) {
2050 PEER_STR_ATTR_INHERIT(peer
, group
, default_rmap
[afi
][safi
].name
,
2051 MTYPE_ROUTE_MAP_NAME
);
2052 PEER_ATTR_INHERIT(peer
, group
, default_rmap
[afi
][safi
].map
);
2055 /* inbound filter apply */
2056 if (!CHECK_FLAG(pfilter_ovrd
[in
], PEER_FT_DISTRIBUTE_LIST
)) {
2057 PEER_STR_ATTR_INHERIT(peer
, group
,
2058 filter
[afi
][safi
].dlist
[in
].name
,
2059 MTYPE_BGP_FILTER_NAME
);
2060 PEER_ATTR_INHERIT(peer
, group
,
2061 filter
[afi
][safi
].dlist
[in
].alist
);
2064 if (!CHECK_FLAG(pfilter_ovrd
[in
], PEER_FT_PREFIX_LIST
)) {
2065 PEER_STR_ATTR_INHERIT(peer
, group
,
2066 filter
[afi
][safi
].plist
[in
].name
,
2067 MTYPE_BGP_FILTER_NAME
);
2068 PEER_ATTR_INHERIT(peer
, group
,
2069 filter
[afi
][safi
].plist
[in
].plist
);
2072 if (!CHECK_FLAG(pfilter_ovrd
[in
], PEER_FT_FILTER_LIST
)) {
2073 PEER_STR_ATTR_INHERIT(peer
, group
,
2074 filter
[afi
][safi
].aslist
[in
].name
,
2075 MTYPE_BGP_FILTER_NAME
);
2076 PEER_ATTR_INHERIT(peer
, group
,
2077 filter
[afi
][safi
].aslist
[in
].aslist
);
2080 if (!CHECK_FLAG(pfilter_ovrd
[RMAP_IN
], PEER_FT_ROUTE_MAP
)) {
2081 PEER_STR_ATTR_INHERIT(peer
, group
,
2082 filter
[afi
][safi
].map
[in
].name
,
2083 MTYPE_BGP_FILTER_NAME
);
2084 PEER_ATTR_INHERIT(peer
, group
,
2085 filter
[afi
][safi
].map
[RMAP_IN
].map
);
2088 /* outbound filter apply */
2089 if (!CHECK_FLAG(pfilter_ovrd
[out
], PEER_FT_DISTRIBUTE_LIST
)) {
2090 PEER_STR_ATTR_INHERIT(peer
, group
,
2091 filter
[afi
][safi
].dlist
[out
].name
,
2092 MTYPE_BGP_FILTER_NAME
);
2093 PEER_ATTR_INHERIT(peer
, group
,
2094 filter
[afi
][safi
].dlist
[out
].alist
);
2097 if (!CHECK_FLAG(pfilter_ovrd
[out
], PEER_FT_PREFIX_LIST
)) {
2098 PEER_STR_ATTR_INHERIT(peer
, group
,
2099 filter
[afi
][safi
].plist
[out
].name
,
2100 MTYPE_BGP_FILTER_NAME
);
2101 PEER_ATTR_INHERIT(peer
, group
,
2102 filter
[afi
][safi
].plist
[out
].plist
);
2105 if (!CHECK_FLAG(pfilter_ovrd
[out
], PEER_FT_FILTER_LIST
)) {
2106 PEER_STR_ATTR_INHERIT(peer
, group
,
2107 filter
[afi
][safi
].aslist
[out
].name
,
2108 MTYPE_BGP_FILTER_NAME
);
2109 PEER_ATTR_INHERIT(peer
, group
,
2110 filter
[afi
][safi
].aslist
[out
].aslist
);
2113 if (!CHECK_FLAG(pfilter_ovrd
[RMAP_OUT
], PEER_FT_ROUTE_MAP
)) {
2114 PEER_STR_ATTR_INHERIT(peer
, group
,
2115 filter
[afi
][safi
].map
[RMAP_OUT
].name
,
2116 MTYPE_BGP_FILTER_NAME
);
2117 PEER_ATTR_INHERIT(peer
, group
,
2118 filter
[afi
][safi
].map
[RMAP_OUT
].map
);
2121 /* nondirectional filter apply */
2122 if (!CHECK_FLAG(pfilter_ovrd
[0], PEER_FT_UNSUPPRESS_MAP
)) {
2123 PEER_STR_ATTR_INHERIT(peer
, group
, filter
[afi
][safi
].usmap
.name
,
2124 MTYPE_BGP_FILTER_NAME
);
2125 PEER_ATTR_INHERIT(peer
, group
, filter
[afi
][safi
].usmap
.map
);
2128 /* Conditional Advertisements */
2129 if (!CHECK_FLAG(pfilter_ovrd
[RMAP_OUT
], PEER_FT_ADVERTISE_MAP
)) {
2130 PEER_STR_ATTR_INHERIT(peer
, group
,
2131 filter
[afi
][safi
].advmap
.aname
,
2132 MTYPE_BGP_FILTER_NAME
);
2133 PEER_ATTR_INHERIT(peer
, group
, filter
[afi
][safi
].advmap
.amap
);
2134 PEER_STR_ATTR_INHERIT(peer
, group
,
2135 filter
[afi
][safi
].advmap
.cname
,
2136 MTYPE_BGP_FILTER_NAME
);
2137 PEER_ATTR_INHERIT(peer
, group
, filter
[afi
][safi
].advmap
.cmap
);
2138 PEER_ATTR_INHERIT(peer
, group
,
2139 filter
[afi
][safi
].advmap
.condition
);
2142 if (peer
->addpath_type
[afi
][safi
] == BGP_ADDPATH_NONE
) {
2143 peer
->addpath_type
[afi
][safi
] = conf
->addpath_type
[afi
][safi
];
2144 bgp_addpath_type_changed(conf
->bgp
);
2148 static int peer_activate_af(struct peer
*peer
, afi_t afi
, safi_t safi
)
2153 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2154 flog_err(EC_BGP_PEER_GROUP
, "%s was called for peer-group %s",
2155 __func__
, peer
->host
);
2159 /* Do not activate a peer for both SAFI_UNICAST and SAFI_LABELED_UNICAST
2161 if ((safi
== SAFI_UNICAST
&& peer
->afc
[afi
][SAFI_LABELED_UNICAST
])
2162 || (safi
== SAFI_LABELED_UNICAST
&& peer
->afc
[afi
][SAFI_UNICAST
]))
2163 return BGP_ERR_PEER_SAFI_CONFLICT
;
2165 /* Nothing to do if we've already activated this peer */
2166 if (peer
->afc
[afi
][safi
])
2169 if (peer_af_create(peer
, afi
, safi
) == NULL
)
2172 active
= peer_active(peer
);
2173 peer
->afc
[afi
][safi
] = 1;
2176 peer_group2peer_config_copy_af(peer
->group
, peer
, afi
, safi
);
2178 if (!active
&& peer_active(peer
)) {
2179 bgp_timer_set(peer
);
2181 if (peer_established(peer
)) {
2182 if (CHECK_FLAG(peer
->cap
, PEER_CAP_DYNAMIC_RCV
)) {
2183 peer
->afc_adv
[afi
][safi
] = 1;
2184 bgp_capability_send(peer
, afi
, safi
,
2186 CAPABILITY_ACTION_SET
);
2187 if (peer
->afc_recv
[afi
][safi
]) {
2188 peer
->afc_nego
[afi
][safi
] = 1;
2189 bgp_announce_route(peer
, afi
, safi
,
2193 peer
->last_reset
= PEER_DOWN_AF_ACTIVATE
;
2194 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2195 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2198 if (peer
->status
== OpenSent
|| peer
->status
== OpenConfirm
) {
2199 peer
->last_reset
= PEER_DOWN_AF_ACTIVATE
;
2200 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2201 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2204 * If we are turning on a AFI/SAFI locally and we've
2205 * started bringing a peer up, we need to tell
2206 * the other peer to restart because we might loose
2207 * configuration here because when the doppelganger
2208 * gets to a established state due to how
2209 * we resolve we could just overwrite the afi/safi
2212 other
= peer
->doppelganger
;
2214 && (other
->status
== OpenSent
2215 || other
->status
== OpenConfirm
)) {
2216 other
->last_reset
= PEER_DOWN_AF_ACTIVATE
;
2217 bgp_notify_send(other
, BGP_NOTIFY_CEASE
,
2218 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2225 /* Activate the peer or peer group for specified AFI and SAFI. */
2226 int peer_activate(struct peer
*peer
, afi_t afi
, safi_t safi
)
2229 struct peer_group
*group
;
2230 struct listnode
*node
, *nnode
;
2231 struct peer
*tmp_peer
;
2234 /* Nothing to do if we've already activated this peer */
2235 if (peer
->afc
[afi
][safi
])
2240 /* This is a peer-group so activate all of the members of the
2241 * peer-group as well */
2242 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2244 /* Do not activate a peer for both SAFI_UNICAST and
2245 * SAFI_LABELED_UNICAST */
2246 if ((safi
== SAFI_UNICAST
2247 && peer
->afc
[afi
][SAFI_LABELED_UNICAST
])
2248 || (safi
== SAFI_LABELED_UNICAST
2249 && peer
->afc
[afi
][SAFI_UNICAST
]))
2250 return BGP_ERR_PEER_SAFI_CONFLICT
;
2252 peer
->afc
[afi
][safi
] = 1;
2253 group
= peer
->group
;
2255 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, tmp_peer
)) {
2256 ret
|= peer_activate_af(tmp_peer
, afi
, safi
);
2259 ret
|= peer_activate_af(peer
, afi
, safi
);
2262 /* If this is the first peer to be activated for this
2263 * afi/labeled-unicast recalc bestpaths to trigger label allocation */
2264 if (ret
!= BGP_ERR_PEER_SAFI_CONFLICT
&& safi
== SAFI_LABELED_UNICAST
2265 && !bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
]) {
2267 if (BGP_DEBUG(zebra
, ZEBRA
))
2269 "peer(s) are now active for labeled-unicast, allocate MPLS labels");
2271 bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
] = 1;
2272 bgp_recalculate_afi_safi_bestpaths(bgp
, afi
, SAFI_UNICAST
);
2275 if (safi
== SAFI_FLOWSPEC
) {
2276 /* connect to table manager */
2277 bgp_zebra_init_tm_connect(bgp
);
2282 static bool non_peergroup_deactivate_af(struct peer
*peer
, afi_t afi
,
2285 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2286 flog_err(EC_BGP_PEER_GROUP
, "%s was called for peer-group %s",
2287 __func__
, peer
->host
);
2291 /* Nothing to do if we've already deactivated this peer */
2292 if (!peer
->afc
[afi
][safi
])
2295 /* De-activate the address family configuration. */
2296 peer
->afc
[afi
][safi
] = 0;
2298 if (peer_af_delete(peer
, afi
, safi
) != 0) {
2299 flog_err(EC_BGP_PEER_DELETE
,
2300 "couldn't delete af structure for peer %s(%s, %s)",
2301 peer
->host
, afi2str(afi
), safi2str(safi
));
2305 if (peer_established(peer
)) {
2306 if (CHECK_FLAG(peer
->cap
, PEER_CAP_DYNAMIC_RCV
)) {
2307 peer
->afc_adv
[afi
][safi
] = 0;
2308 peer
->afc_nego
[afi
][safi
] = 0;
2310 if (peer_active_nego(peer
)) {
2311 bgp_capability_send(peer
, afi
, safi
,
2313 CAPABILITY_ACTION_UNSET
);
2314 bgp_clear_route(peer
, afi
, safi
);
2315 peer
->pcount
[afi
][safi
] = 0;
2317 peer
->last_reset
= PEER_DOWN_NEIGHBOR_DELETE
;
2318 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2319 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2322 peer
->last_reset
= PEER_DOWN_NEIGHBOR_DELETE
;
2323 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2324 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
2331 int peer_deactivate(struct peer
*peer
, afi_t afi
, safi_t safi
)
2334 struct peer_group
*group
;
2335 struct peer
*tmp_peer
;
2336 struct listnode
*node
, *nnode
;
2339 /* Nothing to do if we've already de-activated this peer */
2340 if (!peer
->afc
[afi
][safi
])
2343 /* This is a peer-group so de-activate all of the members of the
2344 * peer-group as well */
2345 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
2346 peer
->afc
[afi
][safi
] = 0;
2347 group
= peer
->group
;
2349 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, tmp_peer
)) {
2350 ret
|= non_peergroup_deactivate_af(tmp_peer
, afi
, safi
);
2353 ret
|= non_peergroup_deactivate_af(peer
, afi
, safi
);
2358 /* If this is the last peer to be deactivated for this
2359 * afi/labeled-unicast recalc bestpaths to trigger label deallocation */
2360 if (safi
== SAFI_LABELED_UNICAST
2361 && bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
]
2362 && !bgp_afi_safi_peer_exists(bgp
, afi
, safi
)) {
2364 if (BGP_DEBUG(zebra
, ZEBRA
))
2366 "peer(s) are no longer active for labeled-unicast, deallocate MPLS labels");
2368 bgp
->allocate_mpls_labels
[afi
][SAFI_UNICAST
] = 0;
2369 bgp_recalculate_afi_safi_bestpaths(bgp
, afi
, SAFI_UNICAST
);
2374 void peer_nsf_stop(struct peer
*peer
)
2379 UNSET_FLAG(peer
->sflags
, PEER_STATUS_NSF_WAIT
);
2380 UNSET_FLAG(peer
->sflags
, PEER_STATUS_NSF_MODE
);
2382 FOREACH_AFI_SAFI_NSF (afi
, safi
)
2383 peer
->nsf
[afi
][safi
] = 0;
2385 if (peer
->t_gr_restart
) {
2386 THREAD_OFF(peer
->t_gr_restart
);
2387 if (bgp_debug_neighbor_events(peer
))
2388 zlog_debug("%pBP graceful restart timer stopped", peer
);
2390 if (peer
->t_gr_stale
) {
2391 THREAD_OFF(peer
->t_gr_stale
);
2392 if (bgp_debug_neighbor_events(peer
))
2394 "%pBP graceful restart stalepath timer stopped",
2397 bgp_clear_route_all(peer
);
2400 /* Delete peer from confguration.
2402 * The peer is moved to a dead-end "Deleted" neighbour-state, to allow
2403 * it to "cool off" and refcounts to hit 0, at which state it is freed.
2405 * This function /should/ take care to be idempotent, to guard against
2406 * it being called multiple times through stray events that come in
2407 * that happen to result in this function being called again. That
2408 * said, getting here for a "Deleted" peer is a bug in the neighbour
2411 int peer_delete(struct peer
*peer
)
2417 struct bgp_filter
*filter
;
2418 struct listnode
*pn
;
2421 assert(peer
->status
!= Deleted
);
2424 accept_peer
= CHECK_FLAG(peer
->sflags
, PEER_STATUS_ACCEPT_PEER
);
2426 bgp_soft_reconfig_table_task_cancel(bgp
, NULL
, peer
);
2428 bgp_keepalives_off(peer
);
2429 bgp_reads_off(peer
);
2430 bgp_writes_off(peer
);
2431 assert(!CHECK_FLAG(peer
->thread_flags
, PEER_THREAD_WRITES_ON
));
2432 assert(!CHECK_FLAG(peer
->thread_flags
, PEER_THREAD_READS_ON
));
2433 assert(!CHECK_FLAG(peer
->thread_flags
, PEER_THREAD_KEEPALIVES_ON
));
2435 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_NSF_WAIT
))
2436 peer_nsf_stop(peer
);
2438 SET_FLAG(peer
->flags
, PEER_FLAG_DELETE
);
2440 /* Remove BFD settings. */
2441 if (peer
->bfd_config
)
2442 bgp_peer_remove_bfd_config(peer
);
2444 /* If this peer belongs to peer group, clear up the
2447 if (peer_dynamic_neighbor(peer
))
2448 peer_drop_dynamic_neighbor(peer
);
2450 if ((pn
= listnode_lookup(peer
->group
->peer
, peer
))) {
2452 peer
); /* group->peer list reference */
2453 list_delete_node(peer
->group
->peer
, pn
);
2458 /* Withdraw all information from routing table. We can not use
2459 * BGP_EVENT_ADD (peer, BGP_Stop) at here. Because the event is
2460 * executed after peer structure is deleted.
2462 peer
->last_reset
= PEER_DOWN_NEIGHBOR_DELETE
;
2464 UNSET_FLAG(peer
->flags
, PEER_FLAG_DELETE
);
2466 if (peer
->doppelganger
) {
2467 peer
->doppelganger
->doppelganger
= NULL
;
2468 peer
->doppelganger
= NULL
;
2471 UNSET_FLAG(peer
->sflags
, PEER_STATUS_ACCEPT_PEER
);
2472 bgp_fsm_change_status(peer
, Deleted
);
2474 /* Remove from NHT */
2475 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
))
2476 bgp_unlink_nexthop_by_peer(peer
);
2478 /* Password configuration */
2479 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
)) {
2480 XFREE(MTYPE_PEER_PASSWORD
, peer
->password
);
2481 if (!accept_peer
&& !BGP_PEER_SU_UNSPEC(peer
)
2482 && !CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)
2483 && !CHECK_FLAG(peer
->flags
, PEER_FLAG_DYNAMIC_NEIGHBOR
))
2484 bgp_md5_unset(peer
);
2487 bgp_timer_set(peer
); /* stops all timers for Deleted */
2489 /* Delete from all peer list. */
2490 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)
2491 && (pn
= listnode_lookup(bgp
->peer
, peer
))) {
2492 peer_unlock(peer
); /* bgp peer list reference */
2493 list_delete_node(bgp
->peer
, pn
);
2494 hash_release(bgp
->peerhash
, peer
);
2499 stream_fifo_free(peer
->ibuf
);
2504 stream_fifo_free(peer
->obuf
);
2508 if (peer
->ibuf_work
) {
2509 ringbuf_del(peer
->ibuf_work
);
2510 peer
->ibuf_work
= NULL
;
2513 if (peer
->obuf_work
) {
2514 stream_free(peer
->obuf_work
);
2515 peer
->obuf_work
= NULL
;
2518 if (peer
->scratch
) {
2519 stream_free(peer
->scratch
);
2520 peer
->scratch
= NULL
;
2523 /* Local and remote addresses. */
2524 if (peer
->su_local
) {
2525 sockunion_free(peer
->su_local
);
2526 peer
->su_local
= NULL
;
2529 if (peer
->su_remote
) {
2530 sockunion_free(peer
->su_remote
);
2531 peer
->su_remote
= NULL
;
2534 /* Free filter related memory. */
2535 FOREACH_AFI_SAFI (afi
, safi
) {
2536 filter
= &peer
->filter
[afi
][safi
];
2538 for (i
= FILTER_IN
; i
< FILTER_MAX
; i
++) {
2539 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->dlist
[i
].name
);
2540 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->plist
[i
].name
);
2541 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->aslist
[i
].name
);
2544 for (i
= RMAP_IN
; i
< RMAP_MAX
; i
++) {
2545 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[i
].name
);
2548 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
2549 XFREE(MTYPE_ROUTE_MAP_NAME
, peer
->default_rmap
[afi
][safi
].name
);
2550 ecommunity_free(&peer
->soo
[afi
][safi
]);
2553 FOREACH_AFI_SAFI (afi
, safi
)
2554 peer_af_delete(peer
, afi
, safi
);
2556 XFREE(MTYPE_BGP_PEER_HOST
, peer
->hostname
);
2557 XFREE(MTYPE_BGP_PEER_HOST
, peer
->domainname
);
2559 peer_unlock(peer
); /* initial reference */
2564 static int peer_group_cmp(struct peer_group
*g1
, struct peer_group
*g2
)
2566 return strcmp(g1
->name
, g2
->name
);
2569 /* Peer group cofiguration. */
2570 static struct peer_group
*peer_group_new(void)
2572 return XCALLOC(MTYPE_PEER_GROUP
, sizeof(struct peer_group
));
2575 static void peer_group_free(struct peer_group
*group
)
2577 XFREE(MTYPE_PEER_GROUP
, group
);
2580 struct peer_group
*peer_group_lookup(struct bgp
*bgp
, const char *name
)
2582 struct peer_group
*group
;
2583 struct listnode
*node
, *nnode
;
2585 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
2586 if (strcmp(group
->name
, name
) == 0)
2592 struct peer_group
*peer_group_get(struct bgp
*bgp
, const char *name
)
2594 struct peer_group
*group
;
2598 group
= peer_group_lookup(bgp
, name
);
2602 group
= peer_group_new();
2604 XFREE(MTYPE_PEER_GROUP_HOST
, group
->name
);
2605 group
->name
= XSTRDUP(MTYPE_PEER_GROUP_HOST
, name
);
2606 group
->peer
= list_new();
2607 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
2608 group
->listen_range
[afi
] = list_new();
2609 group
->conf
= peer_new(bgp
);
2610 FOREACH_AFI_SAFI (afi
, safi
) {
2611 if (bgp
->default_af
[afi
][safi
])
2612 group
->conf
->afc
[afi
][safi
] = 1;
2614 XFREE(MTYPE_BGP_PEER_HOST
, group
->conf
->host
);
2615 group
->conf
->host
= XSTRDUP(MTYPE_BGP_PEER_HOST
, name
);
2616 group
->conf
->group
= group
;
2617 group
->conf
->as
= 0;
2618 group
->conf
->ttl
= BGP_DEFAULT_TTL
;
2619 group
->conf
->gtsm_hops
= BGP_GTSM_HOPS_DISABLED
;
2620 group
->conf
->v_routeadv
= BGP_DEFAULT_EBGP_ROUTEADV
;
2621 SET_FLAG(group
->conf
->sflags
, PEER_STATUS_GROUP
);
2622 listnode_add_sort(bgp
->group
, group
);
2627 static void peer_group2peer_config_copy(struct peer_group
*group
,
2637 peer
->as
= conf
->as
;
2640 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_LOCAL_AS
))
2641 peer
->change_local_as
= conf
->change_local_as
;
2643 /* If peer-group has configured TTL then override it */
2644 if (conf
->ttl
!= BGP_DEFAULT_TTL
)
2645 peer
->ttl
= conf
->ttl
;
2648 peer
->gtsm_hops
= conf
->gtsm_hops
;
2650 /* peer flags apply */
2651 flags_tmp
= conf
->flags
& ~peer
->flags_override
;
2652 flags_tmp
^= conf
->flags_invert
^ peer
->flags_invert
;
2653 flags_tmp
&= ~peer
->flags_override
;
2655 UNSET_FLAG(peer
->flags
, ~peer
->flags_override
);
2656 SET_FLAG(peer
->flags
, flags_tmp
);
2657 SET_FLAG(peer
->flags_invert
, conf
->flags_invert
);
2659 /* peer timers apply */
2660 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_TIMER
)) {
2661 PEER_ATTR_INHERIT(peer
, group
, holdtime
);
2662 PEER_ATTR_INHERIT(peer
, group
, keepalive
);
2665 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_TIMER_CONNECT
)) {
2666 PEER_ATTR_INHERIT(peer
, group
, connect
);
2667 if (CHECK_FLAG(conf
->flags
, PEER_FLAG_TIMER_CONNECT
))
2668 peer
->v_connect
= conf
->connect
;
2670 peer
->v_connect
= peer
->bgp
->default_connect_retry
;
2673 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_TIMER_DELAYOPEN
)) {
2674 PEER_ATTR_INHERIT(peer
, group
, delayopen
);
2675 if (CHECK_FLAG(conf
->flags
, PEER_FLAG_TIMER_DELAYOPEN
))
2676 peer
->v_delayopen
= conf
->delayopen
;
2678 peer
->v_delayopen
= peer
->bgp
->default_delayopen
;
2681 /* advertisement-interval apply */
2682 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_ROUTEADV
)) {
2683 PEER_ATTR_INHERIT(peer
, group
, routeadv
);
2684 if (CHECK_FLAG(conf
->flags
, PEER_FLAG_ROUTEADV
))
2685 peer
->v_routeadv
= conf
->routeadv
;
2687 peer
->v_routeadv
= (peer_sort(peer
) == BGP_PEER_IBGP
)
2688 ? BGP_DEFAULT_IBGP_ROUTEADV
2689 : BGP_DEFAULT_EBGP_ROUTEADV
;
2692 /* capability extended-nexthop apply */
2693 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_CAPABILITY_ENHE
))
2694 if (CHECK_FLAG(conf
->flags
, PEER_FLAG_CAPABILITY_ENHE
))
2695 SET_FLAG(peer
->flags
, PEER_FLAG_CAPABILITY_ENHE
);
2697 /* password apply */
2698 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_PASSWORD
))
2699 PEER_STR_ATTR_INHERIT(peer
, group
, password
,
2700 MTYPE_PEER_PASSWORD
);
2702 if (!BGP_PEER_SU_UNSPEC(peer
))
2705 /* update-source apply */
2706 if (!CHECK_FLAG(peer
->flags_override
, PEER_FLAG_UPDATE_SOURCE
)) {
2707 if (conf
->update_source
) {
2708 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
2709 PEER_SU_ATTR_INHERIT(peer
, group
, update_source
);
2710 } else if (conf
->update_if
) {
2711 sockunion_free(peer
->update_source
);
2712 PEER_STR_ATTR_INHERIT(peer
, group
, update_if
,
2713 MTYPE_PEER_UPDATE_SOURCE
);
2718 PEER_ATTR_INHERIT(peer
, group
, local_role
);
2720 /* Update GR flags for the peer. */
2721 bgp_peer_gr_flags_update(peer
);
2723 /* Apply BFD settings from group to peer if it exists. */
2724 if (conf
->bfd_config
) {
2725 bgp_peer_configure_bfd(peer
, false);
2726 bgp_peer_config_apply(peer
, group
);
2730 /* Peer group's remote AS configuration. */
2731 int peer_group_remote_as(struct bgp
*bgp
, const char *group_name
, as_t
*as
,
2734 struct peer_group
*group
;
2736 struct listnode
*node
, *nnode
;
2738 group
= peer_group_lookup(bgp
, group_name
);
2742 if ((as_type
== group
->conf
->as_type
) && (group
->conf
->as
== *as
))
2746 /* When we setup peer-group AS number all peer group member's AS
2747 number must be updated to same number. */
2748 peer_as_change(group
->conf
, *as
, as_type
);
2750 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2751 if (((peer
->as_type
== AS_SPECIFIED
) && peer
->as
!= *as
)
2752 || (peer
->as_type
!= as_type
))
2753 peer_as_change(peer
, *as
, as_type
);
2759 void peer_notify_unconfig(struct peer
*peer
)
2761 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
2762 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
2763 BGP_NOTIFY_CEASE_PEER_UNCONFIG
);
2766 void peer_group_notify_unconfig(struct peer_group
*group
)
2768 struct peer
*peer
, *other
;
2769 struct listnode
*node
, *nnode
;
2771 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2772 other
= peer
->doppelganger
;
2773 if (other
&& other
->status
!= Deleted
) {
2774 other
->group
= NULL
;
2775 peer_notify_unconfig(other
);
2777 peer_notify_unconfig(peer
);
2781 int peer_group_delete(struct peer_group
*group
)
2785 struct prefix
*prefix
;
2787 struct listnode
*node
, *nnode
;
2792 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2793 other
= peer
->doppelganger
;
2795 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CAPABILITY_ENHE
))
2796 bgp_zebra_terminate_radv(bgp
, peer
);
2799 if (other
&& other
->status
!= Deleted
) {
2800 other
->group
= NULL
;
2804 list_delete(&group
->peer
);
2806 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
2807 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
,
2809 prefix_free(&prefix
);
2811 list_delete(&group
->listen_range
[afi
]);
2814 XFREE(MTYPE_PEER_GROUP_HOST
, group
->name
);
2817 if (group
->conf
->bfd_config
)
2818 bgp_peer_remove_bfd_config(group
->conf
);
2820 group
->conf
->group
= NULL
;
2821 peer_delete(group
->conf
);
2823 /* Delete from all peer_group list. */
2824 listnode_delete(bgp
->group
, group
);
2826 peer_group_free(group
);
2831 int peer_group_remote_as_delete(struct peer_group
*group
)
2833 struct peer
*peer
, *other
;
2834 struct listnode
*node
, *nnode
;
2836 if ((group
->conf
->as_type
== AS_UNSPECIFIED
)
2837 || ((!group
->conf
->as
) && (group
->conf
->as_type
== AS_SPECIFIED
)))
2840 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2841 other
= peer
->doppelganger
;
2843 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_CAPABILITY_ENHE
))
2844 bgp_zebra_terminate_radv(peer
->bgp
, peer
);
2848 if (other
&& other
->status
!= Deleted
) {
2849 other
->group
= NULL
;
2853 list_delete_all_node(group
->peer
);
2855 group
->conf
->as
= 0;
2856 group
->conf
->as_type
= AS_UNSPECIFIED
;
2861 int peer_group_listen_range_add(struct peer_group
*group
, struct prefix
*range
)
2863 struct prefix
*prefix
;
2864 struct listnode
*node
, *nnode
;
2867 afi
= family2afi(range
->family
);
2869 /* Group needs remote AS configured. */
2870 if (group
->conf
->as_type
== AS_UNSPECIFIED
)
2871 return BGP_ERR_PEER_GROUP_NO_REMOTE_AS
;
2873 /* Ensure no duplicates. Currently we don't care about overlaps. */
2874 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
, prefix
)) {
2875 if (prefix_same(range
, prefix
))
2879 prefix
= prefix_new();
2880 prefix_copy(prefix
, range
);
2881 listnode_add(group
->listen_range
[afi
], prefix
);
2883 /* Update passwords for new ranges */
2884 if (group
->conf
->password
)
2885 bgp_md5_set_prefix(group
->bgp
, prefix
, group
->conf
->password
);
2890 int peer_group_listen_range_del(struct peer_group
*group
, struct prefix
*range
)
2892 struct prefix
*prefix
, prefix2
;
2893 struct listnode
*node
, *nnode
;
2897 afi
= family2afi(range
->family
);
2899 /* Identify the listen range. */
2900 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
, prefix
)) {
2901 if (prefix_same(range
, prefix
))
2906 return BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND
;
2908 /* Dispose off any dynamic neighbors that exist due to this listen range
2910 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
2911 if (!peer_dynamic_neighbor(peer
))
2914 if (sockunion2hostprefix(&peer
->su
, &prefix2
)
2915 && prefix_match(prefix
, &prefix2
)) {
2916 if (bgp_debug_neighbor_events(peer
))
2918 "Deleting dynamic neighbor %s group %s upon delete of listen range %pFX",
2919 peer
->host
, group
->name
, prefix
);
2924 /* Get rid of the listen range */
2925 listnode_delete(group
->listen_range
[afi
], prefix
);
2927 /* Remove passwords for deleted ranges */
2928 if (group
->conf
->password
)
2929 bgp_md5_unset_prefix(group
->bgp
, prefix
);
2934 /* Bind specified peer to peer group. */
2935 int peer_group_bind(struct bgp
*bgp
, union sockunion
*su
, struct peer
*peer
,
2936 struct peer_group
*group
, as_t
*as
)
2938 int first_member
= 0;
2941 enum bgp_peer_sort ptype
, gtype
;
2943 /* Lookup the peer. */
2945 peer
= peer_lookup(bgp
, su
);
2947 /* The peer exist, bind it to the peer-group */
2949 /* When the peer already belongs to a peer-group, check the
2951 if (peer_group_active(peer
)) {
2953 /* The peer is already bound to the peer-group,
2956 if (strcmp(peer
->group
->name
, group
->name
) == 0)
2959 return BGP_ERR_PEER_GROUP_CANT_CHANGE
;
2962 /* The peer has not specified a remote-as, inherit it from the
2964 if (peer
->as_type
== AS_UNSPECIFIED
) {
2965 peer
->as_type
= group
->conf
->as_type
;
2966 peer
->as
= group
->conf
->as
;
2967 peer
->sort
= group
->conf
->sort
;
2970 ptype
= peer_sort(peer
);
2971 if (!group
->conf
->as
&& ptype
!= BGP_PEER_UNSPECIFIED
) {
2972 gtype
= peer_sort(group
->conf
);
2973 if ((gtype
!= BGP_PEER_INTERNAL
) && (gtype
!= ptype
)) {
2976 return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT
;
2979 if (gtype
== BGP_PEER_INTERNAL
)
2983 peer_group2peer_config_copy(group
, peer
);
2985 FOREACH_AFI_SAFI (afi
, safi
) {
2986 if (group
->conf
->afc
[afi
][safi
]) {
2987 peer
->afc
[afi
][safi
] = 1;
2989 if (peer_af_find(peer
, afi
, safi
)
2990 || peer_af_create(peer
, afi
, safi
)) {
2991 peer_group2peer_config_copy_af(
2992 group
, peer
, afi
, safi
);
2994 } else if (peer
->afc
[afi
][safi
])
2995 peer_deactivate(peer
, afi
, safi
);
2999 assert(group
&& peer
->group
== group
);
3001 listnode_delete(bgp
->peer
, peer
);
3003 peer
->group
= group
;
3004 listnode_add_sort(bgp
->peer
, peer
);
3006 peer
= peer_lock(peer
); /* group->peer list reference */
3007 listnode_add(group
->peer
, peer
);
3011 gtype
= peer_sort(group
->conf
);
3012 /* Advertisement-interval reset */
3013 if (!CHECK_FLAG(group
->conf
->flags
,
3014 PEER_FLAG_ROUTEADV
)) {
3015 group
->conf
->v_routeadv
=
3016 (gtype
== BGP_PEER_IBGP
)
3017 ? BGP_DEFAULT_IBGP_ROUTEADV
3018 : BGP_DEFAULT_EBGP_ROUTEADV
;
3021 /* ebgp-multihop reset */
3022 if (gtype
== BGP_PEER_IBGP
)
3023 group
->conf
->ttl
= MAXTTL
;
3025 /* local-as reset */
3026 if (gtype
!= BGP_PEER_EBGP
) {
3027 group
->conf
->change_local_as
= 0;
3028 peer_flag_unset(group
->conf
,
3029 PEER_FLAG_LOCAL_AS
);
3030 peer_flag_unset(group
->conf
,
3031 PEER_FLAG_LOCAL_AS_NO_PREPEND
);
3032 peer_flag_unset(group
->conf
,
3033 PEER_FLAG_LOCAL_AS_REPLACE_AS
);
3037 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
3039 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
3040 peer
->last_reset
= PEER_DOWN_RMAP_BIND
;
3041 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
3042 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
3044 bgp_session_reset(peer
);
3048 /* Create a new peer. */
3050 if ((group
->conf
->as_type
== AS_SPECIFIED
)
3051 && (!group
->conf
->as
)) {
3052 return BGP_ERR_PEER_GROUP_NO_REMOTE_AS
;
3055 peer
= peer_create(su
, NULL
, bgp
, bgp
->as
, group
->conf
->as
,
3056 group
->conf
->as_type
, group
);
3058 peer
= peer_lock(peer
); /* group->peer list reference */
3059 listnode_add(group
->peer
, peer
);
3061 peer_group2peer_config_copy(group
, peer
);
3063 /* If the peer-group is active for this afi/safi then activate
3065 FOREACH_AFI_SAFI (afi
, safi
) {
3066 if (group
->conf
->afc
[afi
][safi
]) {
3067 peer
->afc
[afi
][safi
] = 1;
3069 if (!peer_af_find(peer
, afi
, safi
))
3070 peer_af_create(peer
, afi
, safi
);
3072 peer_group2peer_config_copy_af(group
, peer
, afi
,
3074 } else if (peer
->afc
[afi
][safi
])
3075 peer_deactivate(peer
, afi
, safi
);
3078 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
3080 /* Set up peer's events and timers. */
3081 if (peer_active(peer
))
3082 bgp_timer_set(peer
);
3088 static void bgp_startup_timer_expire(struct thread
*thread
)
3092 bgp
= THREAD_ARG(thread
);
3093 bgp
->t_startup
= NULL
;
3097 * On shutdown we call the cleanup function which
3098 * does a free of the link list nodes, free up
3099 * the data we are pointing at too.
3101 static void bgp_vrf_string_name_delete(void *data
)
3105 XFREE(MTYPE_TMP
, vname
);
3108 /* BGP instance creation by `router bgp' commands. */
3109 static struct bgp
*bgp_create(as_t
*as
, const char *name
,
3110 enum bgp_instance_type inst_type
)
3116 bgp
= XCALLOC(MTYPE_BGP
, sizeof(struct bgp
));
3118 if (BGP_DEBUG(zebra
, ZEBRA
)) {
3119 if (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
3120 zlog_debug("Creating Default VRF, AS %u", *as
);
3122 zlog_debug("Creating %s %s, AS %u",
3123 (inst_type
== BGP_INSTANCE_TYPE_VRF
)
3129 /* Default the EVPN VRF to the default one */
3130 if (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
&& !bgp_master
.bgp_evpn
) {
3137 bgp
->allow_martian
= false;
3138 bgp_process_queue_init(bgp
);
3139 bgp
->heuristic_coalesce
= true;
3140 bgp
->inst_type
= inst_type
;
3141 bgp
->vrf_id
= (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
) ? VRF_DEFAULT
3143 bgp
->peer_self
= peer_new(bgp
);
3144 XFREE(MTYPE_BGP_PEER_HOST
, bgp
->peer_self
->host
);
3145 bgp
->peer_self
->host
=
3146 XSTRDUP(MTYPE_BGP_PEER_HOST
, "Static announcement");
3147 XFREE(MTYPE_BGP_PEER_HOST
, bgp
->peer_self
->hostname
);
3148 if (cmd_hostname_get())
3149 bgp
->peer_self
->hostname
=
3150 XSTRDUP(MTYPE_BGP_PEER_HOST
, cmd_hostname_get());
3152 XFREE(MTYPE_BGP_PEER_HOST
, bgp
->peer_self
->domainname
);
3153 if (cmd_domainname_get())
3154 bgp
->peer_self
->domainname
=
3155 XSTRDUP(MTYPE_BGP_PEER_HOST
, cmd_domainname_get());
3156 bgp
->peer
= list_new();
3157 bgp
->peer
->cmp
= (int (*)(void *, void *))peer_cmp
;
3158 bgp
->peerhash
= hash_create(peer_hash_key_make
, peer_hash_same
,
3160 bgp
->peerhash
->max_size
= BGP_PEER_MAX_HASH_SIZE
;
3162 bgp
->group
= list_new();
3163 bgp
->group
->cmp
= (int (*)(void *, void *))peer_group_cmp
;
3165 FOREACH_AFI_SAFI (afi
, safi
) {
3166 bgp
->route
[afi
][safi
] = bgp_table_init(bgp
, afi
, safi
);
3167 bgp
->aggregate
[afi
][safi
] = bgp_table_init(bgp
, afi
, safi
);
3168 bgp
->rib
[afi
][safi
] = bgp_table_init(bgp
, afi
, safi
);
3170 /* Enable maximum-paths */
3171 bgp_maximum_paths_set(bgp
, afi
, safi
, BGP_PEER_EBGP
,
3173 bgp_maximum_paths_set(bgp
, afi
, safi
, BGP_PEER_IBGP
,
3175 /* Initialize graceful restart info */
3176 bgp
->gr_info
[afi
][safi
].eor_required
= 0;
3177 bgp
->gr_info
[afi
][safi
].eor_received
= 0;
3178 bgp
->gr_info
[afi
][safi
].t_select_deferral
= NULL
;
3179 bgp
->gr_info
[afi
][safi
].t_route_select
= NULL
;
3180 bgp
->gr_info
[afi
][safi
].gr_deferred
= 0;
3183 bgp
->v_update_delay
= bm
->v_update_delay
;
3184 bgp
->v_establish_wait
= bm
->v_establish_wait
;
3185 bgp
->default_local_pref
= BGP_DEFAULT_LOCAL_PREF
;
3186 bgp
->default_subgroup_pkt_queue_max
=
3187 BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX
;
3188 bgp_timers_unset(bgp
);
3189 bgp
->default_min_holdtime
= 0;
3190 bgp
->restart_time
= BGP_DEFAULT_RESTART_TIME
;
3191 bgp
->stalepath_time
= BGP_DEFAULT_STALEPATH_TIME
;
3192 bgp
->select_defer_time
= BGP_DEFAULT_SELECT_DEFERRAL_TIME
;
3193 bgp
->rib_stale_time
= BGP_DEFAULT_RIB_STALE_TIME
;
3194 bgp
->dynamic_neighbors_limit
= BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT
;
3195 bgp
->dynamic_neighbors_count
= 0;
3196 bgp
->lb_ref_bw
= BGP_LINK_BW_REF_BW
;
3197 bgp
->lb_handling
= BGP_LINK_BW_ECMP
;
3198 bgp
->reject_as_sets
= false;
3199 bgp
->condition_check_period
= DEFAULT_CONDITIONAL_ROUTES_POLL_TIME
;
3200 bgp_addpath_init_bgp_data(&bgp
->tx_addpath
);
3201 bgp
->fast_convergence
= false;
3203 bgp
->llgr_stale_time
= BGP_DEFAULT_LLGR_STALE_TIME
;
3205 #ifdef ENABLE_BGP_VNC
3206 if (inst_type
!= BGP_INSTANCE_TYPE_VRF
) {
3207 bgp
->rfapi
= bgp_rfapi_new(bgp
);
3209 assert(bgp
->rfapi_cfg
);
3211 #endif /* ENABLE_BGP_VNC */
3213 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
3214 bgp
->vpn_policy
[afi
].bgp
= bgp
;
3215 bgp
->vpn_policy
[afi
].afi
= afi
;
3216 bgp
->vpn_policy
[afi
].tovpn_label
= MPLS_LABEL_NONE
;
3217 bgp
->vpn_policy
[afi
].tovpn_zebra_vrf_label_last_sent
=
3220 bgp
->vpn_policy
[afi
].import_vrf
= list_new();
3221 bgp
->vpn_policy
[afi
].import_vrf
->del
=
3222 bgp_vrf_string_name_delete
;
3223 bgp
->vpn_policy
[afi
].export_vrf
= list_new();
3224 bgp
->vpn_policy
[afi
].export_vrf
->del
=
3225 bgp_vrf_string_name_delete
;
3226 SET_FLAG(bgp
->af_flags
[afi
][SAFI_MPLS_VPN
],
3227 BGP_VPNVX_RETAIN_ROUTE_TARGET_ALL
);
3230 bgp
->name
= XSTRDUP(MTYPE_BGP
, name
);
3232 thread_add_timer(bm
->master
, bgp_startup_timer_expire
, bgp
,
3233 bgp
->restart_time
, &bgp
->t_startup
);
3235 /* printable name we can use in debug messages */
3236 if (inst_type
== BGP_INSTANCE_TYPE_DEFAULT
) {
3237 bgp
->name_pretty
= XSTRDUP(MTYPE_BGP
, "VRF default");
3247 len
= 4 + 1 + strlen(n
) + 1; /* "view foo\0" */
3249 bgp
->name_pretty
= XCALLOC(MTYPE_BGP
, len
);
3250 snprintf(bgp
->name_pretty
, len
, "%s %s",
3251 (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
)
3257 atomic_store_explicit(&bgp
->wpkt_quanta
, BGP_WRITE_PACKET_MAX
,
3258 memory_order_relaxed
);
3259 atomic_store_explicit(&bgp
->rpkt_quanta
, BGP_READ_PACKET_MAX
,
3260 memory_order_relaxed
);
3261 bgp
->coalesce_time
= BGP_DEFAULT_SUBGROUP_COALESCE_TIME
;
3262 bgp
->default_af
[AFI_IP
][SAFI_UNICAST
] = true;
3266 update_bgp_group_init(bgp
);
3268 /* assign a unique rd id for auto derivation of vrf's RD */
3269 bf_assign_index(bm
->rd_idspace
, bgp
->vrf_rd_id
);
3271 bgp
->evpn_info
= XCALLOC(MTYPE_BGP_EVPN_INFO
,
3272 sizeof(struct bgp_evpn_info
));
3274 bgp_evpn_vrf_es_init(bgp
);
3278 /*initilize global GR FSM */
3279 bgp_global_gr_init(bgp
);
3281 memset(&bgp
->ebgprequirespolicywarning
, 0,
3282 sizeof(bgp
->ebgprequirespolicywarning
));
3287 /* Return the "default VRF" instance of BGP. */
3288 struct bgp
*bgp_get_default(void)
3291 struct listnode
*node
, *nnode
;
3293 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
))
3294 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
3299 /* Lookup BGP entry. */
3300 struct bgp
*bgp_lookup(as_t as
, const char *name
)
3303 struct listnode
*node
, *nnode
;
3305 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
))
3307 && ((bgp
->name
== NULL
&& name
== NULL
)
3308 || (bgp
->name
&& name
&& strcmp(bgp
->name
, name
) == 0)))
3313 /* Lookup BGP structure by view name. */
3314 struct bgp
*bgp_lookup_by_name(const char *name
)
3317 struct listnode
*node
, *nnode
;
3319 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
))
3320 if ((bgp
->name
== NULL
&& name
== NULL
)
3321 || (bgp
->name
&& name
&& strcmp(bgp
->name
, name
) == 0))
3326 /* Lookup BGP instance based on VRF id. */
3327 /* Note: Only to be used for incoming messages from Zebra. */
3328 struct bgp
*bgp_lookup_by_vrf_id(vrf_id_t vrf_id
)
3332 /* Lookup VRF (in tree) and follow link. */
3333 vrf
= vrf_lookup_by_id(vrf_id
);
3336 return (vrf
->info
) ? (struct bgp
*)vrf
->info
: NULL
;
3339 /* Sets the BGP instance where EVPN is enabled */
3340 void bgp_set_evpn(struct bgp
*bgp
)
3342 if (bm
->bgp_evpn
== bgp
)
3345 /* First, release the reference count we hold on the instance */
3347 bgp_unlock(bm
->bgp_evpn
);
3351 /* Increase the reference count on this new VRF */
3353 bgp_lock(bm
->bgp_evpn
);
3356 /* Returns the BGP instance where EVPN is enabled, if any */
3357 struct bgp
*bgp_get_evpn(void)
3359 return bm
->bgp_evpn
;
3362 /* handle socket creation or deletion, if necessary
3363 * this is called for all new BGP instances
3365 int bgp_handle_socket(struct bgp
*bgp
, struct vrf
*vrf
, vrf_id_t old_vrf_id
,
3368 struct listnode
*node
;
3371 /* Create BGP server socket, if listen mode not disabled */
3372 if (!bgp
|| bgp_option_check(BGP_OPT_NO_LISTEN
))
3374 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
) {
3376 * suppress vrf socket
3379 bgp_close_vrf_socket(bgp
);
3383 return BGP_ERR_INVALID_VALUE
;
3385 * if vrf_id did not change
3387 if (vrf
->vrf_id
== old_vrf_id
)
3389 if (old_vrf_id
!= VRF_UNKNOWN
) {
3390 /* look for old socket. close it. */
3391 bgp_close_vrf_socket(bgp
);
3393 /* if backend is not yet identified ( VRF_UNKNOWN) then
3394 * creation will be done later
3396 if (vrf
->vrf_id
== VRF_UNKNOWN
)
3398 if (list_isempty(bm
->addresses
)) {
3399 if (bgp_socket(bgp
, bm
->port
, NULL
) < 0)
3400 return BGP_ERR_INVALID_VALUE
;
3402 for (ALL_LIST_ELEMENTS_RO(bm
->addresses
, node
, address
))
3403 if (bgp_socket(bgp
, bm
->port
, address
) < 0)
3404 return BGP_ERR_INVALID_VALUE
;
3408 return bgp_check_main_socket(create
, bgp
);
3411 int bgp_lookup_by_as_name_type(struct bgp
**bgp_val
, as_t
*as
, const char *name
,
3412 enum bgp_instance_type inst_type
)
3416 /* Multiple instance check. */
3418 bgp
= bgp_lookup_by_name(name
);
3420 bgp
= bgp_get_default();
3424 if (bgp
->as
!= *as
) {
3426 return BGP_ERR_AS_MISMATCH
;
3428 if (bgp
->inst_type
!= inst_type
)
3429 return BGP_ERR_INSTANCE_MISMATCH
;
3437 /* Called from VTY commands. */
3438 int bgp_get(struct bgp
**bgp_val
, as_t
*as
, const char *name
,
3439 enum bgp_instance_type inst_type
)
3442 struct vrf
*vrf
= NULL
;
3445 ret
= bgp_lookup_by_as_name_type(bgp_val
, as
, name
, inst_type
);
3446 if (ret
|| *bgp_val
)
3449 bgp
= bgp_create(as
, name
, inst_type
);
3452 * view instances will never work inside of a vrf
3453 * as such they must always be in the VRF_DEFAULT
3454 * Also we must set this to something useful because
3455 * of the vrf socket code needing an actual useful
3456 * default value to send to the underlying OS.
3458 * This code is currently ignoring vrf based
3459 * code using the -Z option( and that is probably
3460 * best addressed elsewhere in the code )
3462 if (inst_type
== BGP_INSTANCE_TYPE_VIEW
)
3463 bgp
->vrf_id
= VRF_DEFAULT
;
3465 bgp_router_id_set(bgp
, &bgp
->router_id_zebra
, true);
3466 bgp_address_init(bgp
);
3467 bgp_tip_hash_init(bgp
);
3471 bgp
->t_rmap_def_originate_eval
= NULL
;
3473 /* If Default instance or VRF, link to the VRF structure, if present. */
3474 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
3475 || bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
) {
3476 vrf
= bgp_vrf_lookup_by_instance_type(bgp
);
3478 bgp_vrf_link(bgp
, vrf
);
3480 /* BGP server socket already processed if BGP instance
3481 * already part of the list
3483 bgp_handle_socket(bgp
, vrf
, VRF_UNKNOWN
, true);
3484 listnode_add(bm
->bgp
, bgp
);
3486 if (IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
3487 if (BGP_DEBUG(zebra
, ZEBRA
))
3488 zlog_debug("%s: Registering BGP instance %s to zebra",
3490 bgp_zebra_instance_register(bgp
);
3496 static void bgp_zclient_set_redist(afi_t afi
, int type
, unsigned short instance
,
3497 vrf_id_t vrf_id
, bool set
)
3501 redist_add_instance(&zclient
->mi_redist
[afi
][type
],
3504 redist_del_instance(&zclient
->mi_redist
[afi
][type
],
3508 vrf_bitmap_set(zclient
->redist
[afi
][type
], vrf_id
);
3510 vrf_bitmap_unset(zclient
->redist
[afi
][type
], vrf_id
);
3514 static void bgp_set_redist_vrf_bitmaps(struct bgp
*bgp
, bool set
)
3518 struct list
*red_list
;
3519 struct listnode
*node
;
3520 struct bgp_redist
*red
;
3522 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
3523 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
3525 red_list
= bgp
->redist
[afi
][i
];
3529 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
))
3530 bgp_zclient_set_redist(afi
, i
, red
->instance
,
3537 * Make BGP instance "up". Applies only to VRFs (non-default) and
3538 * implies the VRF has been learnt from Zebra.
3540 void bgp_instance_up(struct bgp
*bgp
)
3543 struct listnode
*node
, *next
;
3545 bgp_set_redist_vrf_bitmaps(bgp
, true);
3547 /* Register with zebra. */
3548 bgp_zebra_instance_register(bgp
);
3550 /* Kick off any peers that may have been configured. */
3551 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
)) {
3552 if (!BGP_PEER_START_SUPPRESSED(peer
))
3553 BGP_EVENT_ADD(peer
, BGP_Start
);
3556 /* Process any networks that have been configured. */
3557 bgp_static_add(bgp
);
3561 * Make BGP instance "down". Applies only to VRFs (non-default) and
3562 * implies the VRF has been deleted by Zebra.
3564 void bgp_instance_down(struct bgp
*bgp
)
3567 struct listnode
*node
;
3568 struct listnode
*next
;
3571 if (bgp
->t_rmap_def_originate_eval
) {
3572 THREAD_OFF(bgp
->t_rmap_def_originate_eval
);
3573 bgp_unlock(bgp
); /* TODO - This timer is started with a lock -
3577 /* Bring down peers, so corresponding routes are purged. */
3578 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
)) {
3579 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
3580 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
3581 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
);
3583 bgp_session_reset(peer
);
3586 /* Purge network and redistributed routes. */
3587 bgp_purge_static_redist_routes(bgp
);
3589 /* Cleanup registered nexthops (flags) */
3590 bgp_cleanup_nexthops(bgp
);
3592 bgp_zebra_instance_deregister(bgp
);
3594 bgp_set_redist_vrf_bitmaps(bgp
, false);
3597 /* Delete BGP instance. */
3598 int bgp_delete(struct bgp
*bgp
)
3601 struct peer_group
*group
;
3602 struct listnode
*node
, *next
;
3607 struct graceful_restart_info
*gr_info
;
3611 bgp_soft_reconfig_table_task_cancel(bgp
, NULL
, NULL
);
3613 /* make sure we withdraw any exported routes */
3614 vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN
, AFI_IP
, bgp_get_default(),
3616 vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN
, AFI_IP6
, bgp_get_default(),
3619 bgp_vpn_leak_unimport(bgp
);
3621 hook_call(bgp_inst_delete
, bgp
);
3623 THREAD_OFF(bgp
->t_startup
);
3624 THREAD_OFF(bgp
->t_maxmed_onstartup
);
3625 THREAD_OFF(bgp
->t_update_delay
);
3626 THREAD_OFF(bgp
->t_establish_wait
);
3628 /* Set flag indicating bgp instance delete in progress */
3629 SET_FLAG(bgp
->flags
, BGP_FLAG_DELETE_IN_PROGRESS
);
3631 /* Delete the graceful restart info */
3632 FOREACH_AFI_SAFI (afi
, safi
) {
3635 gr_info
= &bgp
->gr_info
[afi
][safi
];
3639 THREAD_OFF(gr_info
->t_select_deferral
);
3641 t
= gr_info
->t_route_select
;
3643 void *info
= THREAD_ARG(t
);
3645 XFREE(MTYPE_TMP
, info
);
3647 THREAD_OFF(gr_info
->t_route_select
);
3650 if (BGP_DEBUG(zebra
, ZEBRA
)) {
3651 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
3652 zlog_debug("Deleting Default VRF");
3654 zlog_debug("Deleting %s %s",
3655 (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
)
3661 /* unmap from RT list */
3662 bgp_evpn_vrf_delete(bgp
);
3664 /* unmap bgp vrf label */
3665 vpn_leak_zebra_vrf_label_withdraw(bgp
, AFI_IP
);
3666 vpn_leak_zebra_vrf_label_withdraw(bgp
, AFI_IP6
);
3669 if (bgp
->t_rmap_def_originate_eval
) {
3670 THREAD_OFF(bgp
->t_rmap_def_originate_eval
);
3671 bgp_unlock(bgp
); /* TODO - This timer is started with a lock -
3675 /* Inform peers we're going down. */
3676 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
)) {
3677 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
3678 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
3679 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
);
3682 /* Delete static routes (networks). */
3683 bgp_static_delete(bgp
);
3685 /* Unset redistribution. */
3686 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++)
3687 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
3688 if (i
!= ZEBRA_ROUTE_BGP
)
3689 bgp_redistribute_unset(bgp
, afi
, i
, 0);
3691 /* Free peers and peer-groups. */
3692 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, next
, group
))
3693 peer_group_delete(group
);
3695 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, next
, peer
))
3698 if (bgp
->peer_self
) {
3699 peer_delete(bgp
->peer_self
);
3700 bgp
->peer_self
= NULL
;
3703 update_bgp_group_free(bgp
);
3705 /* TODO - Other memory may need to be freed - e.g., NHT */
3707 #ifdef ENABLE_BGP_VNC
3710 bgp_cleanup_routes(bgp
);
3712 for (afi
= 0; afi
< AFI_MAX
; ++afi
) {
3713 if (!bgp
->vpn_policy
[afi
].import_redirect_rtlist
)
3716 &bgp
->vpn_policy
[afi
]
3717 .import_redirect_rtlist
);
3718 bgp
->vpn_policy
[afi
].import_redirect_rtlist
= NULL
;
3721 /* Deregister from Zebra, if needed */
3722 if (IS_BGP_INST_KNOWN_TO_ZEBRA(bgp
)) {
3723 if (BGP_DEBUG(zebra
, ZEBRA
))
3725 "%s: deregistering this bgp %s instance from zebra",
3726 __func__
, bgp
->name
);
3727 bgp_zebra_instance_deregister(bgp
);
3730 /* Remove visibility via the master list - there may however still be
3731 * routes to be processed still referencing the struct bgp.
3733 listnode_delete(bm
->bgp
, bgp
);
3735 /* Free interfaces in this instance. */
3738 vrf
= bgp_vrf_lookup_by_instance_type(bgp
);
3739 bgp_handle_socket(bgp
, vrf
, VRF_UNKNOWN
, false);
3741 bgp_vrf_unlink(bgp
, vrf
);
3743 /* Update EVPN VRF pointer */
3744 if (bm
->bgp_evpn
== bgp
) {
3745 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
3748 bgp_set_evpn(bgp_get_default());
3751 if (bgp
->process_queue
)
3752 work_queue_free_and_null(&bgp
->process_queue
);
3754 thread_master_free_unused(bm
->master
);
3755 bgp_unlock(bgp
); /* initial reference */
3760 void bgp_free(struct bgp
*bgp
)
3764 struct bgp_table
*table
;
3765 struct bgp_dest
*dest
;
3766 struct bgp_rmap
*rmap
;
3770 list_delete(&bgp
->group
);
3771 list_delete(&bgp
->peer
);
3773 if (bgp
->peerhash
) {
3774 hash_free(bgp
->peerhash
);
3775 bgp
->peerhash
= NULL
;
3778 FOREACH_AFI_SAFI (afi
, safi
) {
3779 /* Special handling for 2-level routing tables. */
3780 if (safi
== SAFI_MPLS_VPN
|| safi
== SAFI_ENCAP
3781 || safi
== SAFI_EVPN
) {
3782 for (dest
= bgp_table_top(bgp
->rib
[afi
][safi
]); dest
;
3783 dest
= bgp_route_next(dest
)) {
3784 table
= bgp_dest_get_bgp_table_info(dest
);
3785 bgp_table_finish(&table
);
3788 if (bgp
->route
[afi
][safi
])
3789 bgp_table_finish(&bgp
->route
[afi
][safi
]);
3790 if (bgp
->aggregate
[afi
][safi
])
3791 bgp_table_finish(&bgp
->aggregate
[afi
][safi
]);
3792 if (bgp
->rib
[afi
][safi
])
3793 bgp_table_finish(&bgp
->rib
[afi
][safi
]);
3794 rmap
= &bgp
->table_map
[afi
][safi
];
3795 XFREE(MTYPE_ROUTE_MAP_NAME
, rmap
->name
);
3798 bgp_scan_finish(bgp
);
3799 bgp_address_destroy(bgp
);
3800 bgp_tip_hash_destroy(bgp
);
3802 /* release the auto RD id */
3803 bf_release_index(bm
->rd_idspace
, bgp
->vrf_rd_id
);
3805 bgp_evpn_cleanup(bgp
);
3806 bgp_pbr_cleanup(bgp
);
3807 bgp_srv6_cleanup(bgp
);
3808 XFREE(MTYPE_BGP_EVPN_INFO
, bgp
->evpn_info
);
3810 for (afi
= AFI_IP
; afi
< AFI_MAX
; afi
++) {
3811 enum vpn_policy_direction dir
;
3813 if (bgp
->vpn_policy
[afi
].import_vrf
)
3814 list_delete(&bgp
->vpn_policy
[afi
].import_vrf
);
3815 if (bgp
->vpn_policy
[afi
].export_vrf
)
3816 list_delete(&bgp
->vpn_policy
[afi
].export_vrf
);
3818 dir
= BGP_VPN_POLICY_DIR_FROMVPN
;
3819 if (bgp
->vpn_policy
[afi
].rtlist
[dir
])
3820 ecommunity_free(&bgp
->vpn_policy
[afi
].rtlist
[dir
]);
3821 dir
= BGP_VPN_POLICY_DIR_TOVPN
;
3822 if (bgp
->vpn_policy
[afi
].rtlist
[dir
])
3823 ecommunity_free(&bgp
->vpn_policy
[afi
].rtlist
[dir
]);
3826 XFREE(MTYPE_BGP
, bgp
->name
);
3827 XFREE(MTYPE_BGP
, bgp
->name_pretty
);
3828 XFREE(MTYPE_BGP
, bgp
->snmp_stats
);
3830 XFREE(MTYPE_BGP
, bgp
);
3833 struct peer
*peer_lookup_by_conf_if(struct bgp
*bgp
, const char *conf_if
)
3836 struct listnode
*node
, *nnode
;
3842 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3843 if (peer
->conf_if
&& !strcmp(peer
->conf_if
, conf_if
)
3844 && !CHECK_FLAG(peer
->sflags
,
3845 PEER_STATUS_ACCEPT_PEER
))
3847 } else if (bm
->bgp
!= NULL
) {
3848 struct listnode
*bgpnode
, *nbgpnode
;
3850 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
))
3851 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3853 && !strcmp(peer
->conf_if
, conf_if
)
3854 && !CHECK_FLAG(peer
->sflags
,
3855 PEER_STATUS_ACCEPT_PEER
))
3861 struct peer
*peer_lookup_by_hostname(struct bgp
*bgp
, const char *hostname
)
3864 struct listnode
*node
, *nnode
;
3870 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3871 if (peer
->hostname
&& !strcmp(peer
->hostname
, hostname
)
3872 && !CHECK_FLAG(peer
->sflags
,
3873 PEER_STATUS_ACCEPT_PEER
))
3875 } else if (bm
->bgp
!= NULL
) {
3876 struct listnode
*bgpnode
, *nbgpnode
;
3878 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
))
3879 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
3881 && !strcmp(peer
->hostname
, hostname
)
3882 && !CHECK_FLAG(peer
->sflags
,
3883 PEER_STATUS_ACCEPT_PEER
))
3889 struct peer
*peer_lookup(struct bgp
*bgp
, union sockunion
*su
)
3891 struct peer
*peer
= NULL
;
3892 struct peer tmp_peer
;
3894 memset(&tmp_peer
, 0, sizeof(struct peer
));
3897 * We do not want to find the doppelganger peer so search for the peer
3899 * the hash that has PEER_FLAG_CONFIG_NODE
3901 SET_FLAG(tmp_peer
.flags
, PEER_FLAG_CONFIG_NODE
);
3906 peer
= hash_lookup(bgp
->peerhash
, &tmp_peer
);
3907 } else if (bm
->bgp
!= NULL
) {
3908 struct listnode
*bgpnode
, *nbgpnode
;
3910 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
)) {
3911 peer
= hash_lookup(bgp
->peerhash
, &tmp_peer
);
3920 struct peer
*peer_create_bind_dynamic_neighbor(struct bgp
*bgp
,
3921 union sockunion
*su
,
3922 struct peer_group
*group
)
3928 /* Create peer first; we've already checked group config is valid. */
3929 peer
= peer_create(su
, NULL
, bgp
, bgp
->as
, group
->conf
->as
,
3930 group
->conf
->as_type
, group
);
3935 peer
= peer_lock(peer
);
3936 listnode_add(group
->peer
, peer
);
3938 peer_group2peer_config_copy(group
, peer
);
3941 * Bind peer for all AFs configured for the group. We don't call
3942 * peer_group_bind as that is sub-optimal and does some stuff we don't
3945 FOREACH_AFI_SAFI (afi
, safi
) {
3946 if (!group
->conf
->afc
[afi
][safi
])
3948 peer
->afc
[afi
][safi
] = 1;
3950 if (!peer_af_find(peer
, afi
, safi
))
3951 peer_af_create(peer
, afi
, safi
);
3953 peer_group2peer_config_copy_af(group
, peer
, afi
, safi
);
3956 /* Mark as dynamic, but also as a "config node" for other things to
3958 SET_FLAG(peer
->flags
, PEER_FLAG_DYNAMIC_NEIGHBOR
);
3959 SET_FLAG(peer
->flags
, PEER_FLAG_CONFIG_NODE
);
3965 peer_group_lookup_dynamic_neighbor_range(struct peer_group
*group
,
3966 struct prefix
*prefix
)
3968 struct listnode
*node
, *nnode
;
3969 struct prefix
*range
;
3972 afi
= family2afi(prefix
->family
);
3974 if (group
->listen_range
[afi
])
3975 for (ALL_LIST_ELEMENTS(group
->listen_range
[afi
], node
, nnode
,
3977 if (prefix_match(range
, prefix
))
3984 peer_group_lookup_dynamic_neighbor(struct bgp
*bgp
, struct prefix
*prefix
,
3985 struct prefix
**listen_range
)
3987 struct prefix
*range
= NULL
;
3988 struct peer_group
*group
= NULL
;
3989 struct listnode
*node
, *nnode
;
3991 *listen_range
= NULL
;
3993 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
))
3994 if ((range
= peer_group_lookup_dynamic_neighbor_range(
3997 } else if (bm
->bgp
!= NULL
) {
3998 struct listnode
*bgpnode
, *nbgpnode
;
4000 for (ALL_LIST_ELEMENTS(bm
->bgp
, bgpnode
, nbgpnode
, bgp
))
4001 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
))
4002 if ((range
= peer_group_lookup_dynamic_neighbor_range(
4008 *listen_range
= range
;
4009 return (group
&& range
) ? group
: NULL
;
4012 struct peer
*peer_lookup_dynamic_neighbor(struct bgp
*bgp
, union sockunion
*su
)
4014 struct peer_group
*group
;
4017 struct prefix prefix
;
4018 struct prefix
*listen_range
;
4021 if (!sockunion2hostprefix(su
, &prefix
))
4024 /* See if incoming connection matches a configured listen range. */
4025 group
= peer_group_lookup_dynamic_neighbor(bgp
, &prefix
, &listen_range
);
4036 if (bgp_debug_neighbor_events(NULL
))
4038 "Dynamic Neighbor %pFX matches group %s listen range %pFX",
4039 &prefix
, group
->name
, listen_range
);
4041 /* Are we within the listen limit? */
4042 dncount
= gbgp
->dynamic_neighbors_count
;
4044 if (dncount
>= gbgp
->dynamic_neighbors_limit
) {
4045 if (bgp_debug_neighbor_events(NULL
))
4047 "Dynamic Neighbor %pFX rejected - at limit %d",
4048 &prefix
, gbgp
->dynamic_neighbors_limit
);
4052 /* Ensure group is not disabled. */
4053 if (CHECK_FLAG(group
->conf
->flags
, PEER_FLAG_SHUTDOWN
)) {
4054 if (bgp_debug_neighbor_events(NULL
))
4056 "Dynamic Neighbor %pFX rejected - group %s disabled",
4057 &prefix
, group
->name
);
4061 /* Check that at least one AF is activated for the group. */
4062 if (!peer_group_af_configured(group
)) {
4063 if (bgp_debug_neighbor_events(NULL
))
4065 "Dynamic Neighbor %pFX rejected - no AF activated for group %s",
4066 &prefix
, group
->name
);
4070 /* Create dynamic peer and bind to associated group. */
4071 peer
= peer_create_bind_dynamic_neighbor(gbgp
, su
, group
);
4074 gbgp
->dynamic_neighbors_count
= ++dncount
;
4076 if (bgp_debug_neighbor_events(peer
))
4077 zlog_debug("%s Dynamic Neighbor added, group %s count %d",
4078 peer
->host
, group
->name
, dncount
);
4083 static void peer_drop_dynamic_neighbor(struct peer
*peer
)
4086 if (peer
->group
->bgp
) {
4087 dncount
= peer
->group
->bgp
->dynamic_neighbors_count
;
4089 peer
->group
->bgp
->dynamic_neighbors_count
= --dncount
;
4091 if (bgp_debug_neighbor_events(peer
))
4092 zlog_debug("%s dropped from group %s, count %d", peer
->host
,
4093 peer
->group
->name
, dncount
);
4096 /* If peer is configured at least one address family return 1. */
4097 bool peer_active(struct peer
*peer
)
4099 if (BGP_PEER_SU_UNSPEC(peer
))
4101 if (peer
->afc
[AFI_IP
][SAFI_UNICAST
] || peer
->afc
[AFI_IP
][SAFI_MULTICAST
]
4102 || peer
->afc
[AFI_IP
][SAFI_LABELED_UNICAST
]
4103 || peer
->afc
[AFI_IP
][SAFI_MPLS_VPN
] || peer
->afc
[AFI_IP
][SAFI_ENCAP
]
4104 || peer
->afc
[AFI_IP
][SAFI_FLOWSPEC
]
4105 || peer
->afc
[AFI_IP6
][SAFI_UNICAST
]
4106 || peer
->afc
[AFI_IP6
][SAFI_MULTICAST
]
4107 || peer
->afc
[AFI_IP6
][SAFI_LABELED_UNICAST
]
4108 || peer
->afc
[AFI_IP6
][SAFI_MPLS_VPN
]
4109 || peer
->afc
[AFI_IP6
][SAFI_ENCAP
]
4110 || peer
->afc
[AFI_IP6
][SAFI_FLOWSPEC
]
4111 || peer
->afc
[AFI_L2VPN
][SAFI_EVPN
])
4116 /* If peer is negotiated at least one address family return 1. */
4117 bool peer_active_nego(struct peer
*peer
)
4119 if (peer
->afc_nego
[AFI_IP
][SAFI_UNICAST
]
4120 || peer
->afc_nego
[AFI_IP
][SAFI_MULTICAST
]
4121 || peer
->afc_nego
[AFI_IP
][SAFI_LABELED_UNICAST
]
4122 || peer
->afc_nego
[AFI_IP
][SAFI_MPLS_VPN
]
4123 || peer
->afc_nego
[AFI_IP
][SAFI_ENCAP
]
4124 || peer
->afc_nego
[AFI_IP
][SAFI_FLOWSPEC
]
4125 || peer
->afc_nego
[AFI_IP6
][SAFI_UNICAST
]
4126 || peer
->afc_nego
[AFI_IP6
][SAFI_MULTICAST
]
4127 || peer
->afc_nego
[AFI_IP6
][SAFI_LABELED_UNICAST
]
4128 || peer
->afc_nego
[AFI_IP6
][SAFI_MPLS_VPN
]
4129 || peer
->afc_nego
[AFI_IP6
][SAFI_ENCAP
]
4130 || peer
->afc_nego
[AFI_IP6
][SAFI_FLOWSPEC
]
4131 || peer
->afc_nego
[AFI_L2VPN
][SAFI_EVPN
])
4136 /* If peer received at least one address family MP, return true */
4137 bool peer_afc_received(struct peer
*peer
)
4142 FOREACH_AFI_SAFI (afi
, safi
)
4143 if (peer
->afc_recv
[afi
][safi
])
4149 /* If peer advertised at least one address family MP, return true */
4150 bool peer_afc_advertised(struct peer
*peer
)
4155 FOREACH_AFI_SAFI (afi
, safi
)
4156 if (peer
->afc_adv
[afi
][safi
])
4162 void peer_change_action(struct peer
*peer
, afi_t afi
, safi_t safi
,
4163 enum peer_change_type type
)
4165 struct peer_af
*paf
;
4167 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
4170 if (!peer_established(peer
))
4173 if (type
== peer_change_reset
) {
4174 /* If we're resetting session, we've to delete both peer struct
4176 if ((peer
->doppelganger
)
4177 && (peer
->doppelganger
->status
!= Deleted
)
4178 && (!CHECK_FLAG(peer
->doppelganger
->flags
,
4179 PEER_FLAG_CONFIG_NODE
)))
4180 peer_delete(peer
->doppelganger
);
4182 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4183 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4184 } else if (type
== peer_change_reset_in
) {
4185 if (CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_OLD_RCV
)
4186 || CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_NEW_RCV
))
4187 bgp_route_refresh_send(peer
, afi
, safi
, 0, 0, 0,
4188 BGP_ROUTE_REFRESH_NORMAL
);
4190 if ((peer
->doppelganger
)
4191 && (peer
->doppelganger
->status
!= Deleted
)
4192 && (!CHECK_FLAG(peer
->doppelganger
->flags
,
4193 PEER_FLAG_CONFIG_NODE
)))
4194 peer_delete(peer
->doppelganger
);
4196 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4197 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4199 } else if (type
== peer_change_reset_out
) {
4200 paf
= peer_af_find(peer
, afi
, safi
);
4201 if (paf
&& paf
->subgroup
)
4202 SET_FLAG(paf
->subgroup
->sflags
,
4203 SUBGRP_STATUS_FORCE_UPDATES
);
4205 update_group_adjust_peer(paf
);
4206 bgp_announce_route(peer
, afi
, safi
, false);
4210 struct peer_flag_action
{
4214 /* This flag can be set for peer-group member. */
4215 uint8_t not_for_member
;
4217 /* Action when the flag is changed. */
4218 enum peer_change_type type
;
4221 static const struct peer_flag_action peer_flag_action_list
[] = {
4222 {PEER_FLAG_PASSIVE
, 0, peer_change_reset
},
4223 {PEER_FLAG_SHUTDOWN
, 0, peer_change_reset
},
4224 {PEER_FLAG_RTT_SHUTDOWN
, 0, peer_change_none
},
4225 {PEER_FLAG_DONT_CAPABILITY
, 0, peer_change_none
},
4226 {PEER_FLAG_OVERRIDE_CAPABILITY
, 0, peer_change_none
},
4227 {PEER_FLAG_STRICT_CAP_MATCH
, 0, peer_change_none
},
4228 {PEER_FLAG_DYNAMIC_CAPABILITY
, 0, peer_change_reset
},
4229 {PEER_FLAG_DISABLE_CONNECTED_CHECK
, 0, peer_change_reset
},
4230 {PEER_FLAG_CAPABILITY_ENHE
, 0, peer_change_reset
},
4231 {PEER_FLAG_ENFORCE_FIRST_AS
, 0, peer_change_reset_in
},
4232 {PEER_FLAG_IFPEER_V6ONLY
, 0, peer_change_reset
},
4233 {PEER_FLAG_ROUTEADV
, 0, peer_change_none
},
4234 {PEER_FLAG_TIMER
, 0, peer_change_none
},
4235 {PEER_FLAG_TIMER_CONNECT
, 0, peer_change_none
},
4236 {PEER_FLAG_TIMER_DELAYOPEN
, 0, peer_change_none
},
4237 {PEER_FLAG_PASSWORD
, 0, peer_change_none
},
4238 {PEER_FLAG_LOCAL_AS
, 0, peer_change_none
},
4239 {PEER_FLAG_LOCAL_AS_NO_PREPEND
, 0, peer_change_none
},
4240 {PEER_FLAG_LOCAL_AS_REPLACE_AS
, 0, peer_change_none
},
4241 {PEER_FLAG_UPDATE_SOURCE
, 0, peer_change_none
},
4242 {PEER_FLAG_DISABLE_LINK_BW_ENCODING_IEEE
, 0, peer_change_none
},
4243 {PEER_FLAG_EXTENDED_OPT_PARAMS
, 0, peer_change_reset
},
4244 {PEER_FLAG_ROLE_STRICT_MODE
, 0, peer_change_reset
},
4245 {PEER_FLAG_ROLE
, 0, peer_change_reset
},
4246 {PEER_FLAG_PORT
, 0, peer_change_reset
},
4249 static const struct peer_flag_action peer_af_flag_action_list
[] = {
4250 {PEER_FLAG_SEND_COMMUNITY
, 1, peer_change_reset_out
},
4251 {PEER_FLAG_SEND_EXT_COMMUNITY
, 1, peer_change_reset_out
},
4252 {PEER_FLAG_SEND_LARGE_COMMUNITY
, 1, peer_change_reset_out
},
4253 {PEER_FLAG_NEXTHOP_SELF
, 1, peer_change_reset_out
},
4254 {PEER_FLAG_REFLECTOR_CLIENT
, 1, peer_change_reset
},
4255 {PEER_FLAG_RSERVER_CLIENT
, 1, peer_change_reset
},
4256 {PEER_FLAG_SOFT_RECONFIG
, 0, peer_change_reset_in
},
4257 {PEER_FLAG_AS_PATH_UNCHANGED
, 1, peer_change_reset_out
},
4258 {PEER_FLAG_NEXTHOP_UNCHANGED
, 1, peer_change_reset_out
},
4259 {PEER_FLAG_MED_UNCHANGED
, 1, peer_change_reset_out
},
4260 {PEER_FLAG_DEFAULT_ORIGINATE
, 0, peer_change_none
},
4261 {PEER_FLAG_REMOVE_PRIVATE_AS
, 1, peer_change_reset_out
},
4262 {PEER_FLAG_ALLOWAS_IN
, 0, peer_change_reset_in
},
4263 {PEER_FLAG_ALLOWAS_IN_ORIGIN
, 0, peer_change_reset_in
},
4264 {PEER_FLAG_ORF_PREFIX_SM
, 1, peer_change_reset
},
4265 {PEER_FLAG_ORF_PREFIX_RM
, 1, peer_change_reset
},
4266 {PEER_FLAG_MAX_PREFIX
, 0, peer_change_none
},
4267 {PEER_FLAG_MAX_PREFIX_WARNING
, 0, peer_change_none
},
4268 {PEER_FLAG_MAX_PREFIX_FORCE
, 0, peer_change_none
},
4269 {PEER_FLAG_MAX_PREFIX_OUT
, 0, peer_change_none
},
4270 {PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED
, 0, peer_change_reset_out
},
4271 {PEER_FLAG_FORCE_NEXTHOP_SELF
, 1, peer_change_reset_out
},
4272 {PEER_FLAG_REMOVE_PRIVATE_AS_ALL
, 1, peer_change_reset_out
},
4273 {PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE
, 1, peer_change_reset_out
},
4274 {PEER_FLAG_AS_OVERRIDE
, 1, peer_change_reset_out
},
4275 {PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE
, 1, peer_change_reset_out
},
4276 {PEER_FLAG_WEIGHT
, 0, peer_change_reset_in
},
4277 {PEER_FLAG_DISABLE_ADDPATH_RX
, 0, peer_change_reset
},
4278 {PEER_FLAG_SOO
, 0, peer_change_reset
},
4281 /* Proper action set. */
4282 static int peer_flag_action_set(const struct peer_flag_action
*action_list
,
4283 int size
, struct peer_flag_action
*action
,
4290 const struct peer_flag_action
*match
= NULL
;
4292 /* Check peer's frag action. */
4293 for (i
= 0; i
< size
; i
++) {
4294 match
= &action_list
[i
];
4296 if (match
->flag
== 0)
4299 if (match
->flag
& flag
) {
4302 if (match
->type
== peer_change_reset_in
)
4304 if (match
->type
== peer_change_reset_out
)
4306 if (match
->type
== peer_change_reset
) {
4310 if (match
->not_for_member
)
4311 action
->not_for_member
= 1;
4315 /* Set peer clear type. */
4316 if (reset_in
&& reset_out
)
4317 action
->type
= peer_change_reset
;
4319 action
->type
= peer_change_reset_in
;
4321 action
->type
= peer_change_reset_out
;
4323 action
->type
= peer_change_none
;
4328 static void peer_flag_modify_action(struct peer
*peer
, uint32_t flag
)
4330 if (flag
== PEER_FLAG_SHUTDOWN
) {
4331 if (CHECK_FLAG(peer
->flags
, flag
)) {
4332 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_NSF_WAIT
))
4333 peer_nsf_stop(peer
);
4335 UNSET_FLAG(peer
->sflags
, PEER_STATUS_PREFIX_OVERFLOW
);
4337 if (peer
->t_pmax_restart
) {
4338 THREAD_OFF(peer
->t_pmax_restart
);
4339 if (bgp_debug_neighbor_events(peer
))
4341 "%pBP Maximum-prefix restart timer canceled",
4345 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
4346 char *msg
= peer
->tx_shutdown_message
;
4348 uint8_t msgbuf
[BGP_ADMIN_SHUTDOWN_MSG_LEN
+ 1];
4350 if (!msg
&& peer_group_active(peer
))
4351 msg
= peer
->group
->conf
4352 ->tx_shutdown_message
;
4353 msglen
= msg
? strlen(msg
) : 0;
4354 if (msglen
> BGP_ADMIN_SHUTDOWN_MSG_LEN
)
4355 msglen
= BGP_ADMIN_SHUTDOWN_MSG_LEN
;
4359 memcpy(msgbuf
+ 1, msg
, msglen
);
4361 bgp_notify_send_with_data(
4362 peer
, BGP_NOTIFY_CEASE
,
4363 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
,
4364 msgbuf
, msglen
+ 1);
4367 peer
, BGP_NOTIFY_CEASE
,
4368 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
);
4370 bgp_session_reset(peer
);
4372 peer
->v_start
= BGP_INIT_START_TIMER
;
4373 BGP_EVENT_ADD(peer
, BGP_Stop
);
4375 } else if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
4376 if (flag
== PEER_FLAG_DYNAMIC_CAPABILITY
)
4377 peer
->last_reset
= PEER_DOWN_CAPABILITY_CHANGE
;
4378 else if (flag
== PEER_FLAG_PASSIVE
)
4379 peer
->last_reset
= PEER_DOWN_PASSIVE_CHANGE
;
4380 else if (flag
== PEER_FLAG_DISABLE_CONNECTED_CHECK
)
4381 peer
->last_reset
= PEER_DOWN_MULTIHOP_CHANGE
;
4383 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4384 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4386 bgp_session_reset(peer
);
4389 /* Enable global administrative shutdown of all peers of BGP instance */
4390 void bgp_shutdown_enable(struct bgp
*bgp
, const char *msg
)
4393 struct listnode
*node
;
4394 /* length(1) + message(N) */
4395 uint8_t data
[BGP_ADMIN_SHUTDOWN_MSG_LEN
+ 1];
4397 /* do nothing if already shut down */
4398 if (CHECK_FLAG(bgp
->flags
, BGP_FLAG_SHUTDOWN
))
4401 /* informational log message */
4402 zlog_info("Enabled administrative shutdown on BGP instance AS %u",
4405 /* iterate through peers of BGP instance */
4406 for (ALL_LIST_ELEMENTS_RO(bgp
->peer
, node
, peer
)) {
4407 /* continue, if peer is already in administrative shutdown. */
4408 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_SHUTDOWN
))
4411 /* send a RFC 4486 notification message if necessary */
4412 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
4414 size_t datalen
= strlen(msg
);
4416 if (datalen
> BGP_ADMIN_SHUTDOWN_MSG_LEN
)
4417 datalen
= BGP_ADMIN_SHUTDOWN_MSG_LEN
;
4420 memcpy(data
+ 1, msg
, datalen
);
4422 bgp_notify_send_with_data(
4423 peer
, BGP_NOTIFY_CEASE
,
4424 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
, data
,
4428 peer
, BGP_NOTIFY_CEASE
,
4429 BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN
);
4433 /* reset start timer to initial value */
4434 peer
->v_start
= BGP_INIT_START_TIMER
;
4436 /* trigger a RFC 4271 ManualStop event */
4437 BGP_EVENT_ADD(peer
, BGP_Stop
);
4440 /* set the BGP instances shutdown flag */
4441 SET_FLAG(bgp
->flags
, BGP_FLAG_SHUTDOWN
);
4444 /* Disable global administrative shutdown of all peers of BGP instance */
4445 void bgp_shutdown_disable(struct bgp
*bgp
)
4447 /* do nothing if not shut down. */
4448 if (!CHECK_FLAG(bgp
->flags
, BGP_FLAG_SHUTDOWN
))
4451 /* informational log message */
4452 zlog_info("Disabled administrative shutdown on BGP instance AS %u",
4455 /* clear the BGP instances shutdown flag */
4456 UNSET_FLAG(bgp
->flags
, BGP_FLAG_SHUTDOWN
);
4459 /* Change specified peer flag. */
4460 static int peer_flag_modify(struct peer
*peer
, uint64_t flag
, int set
)
4464 bool invert
, member_invert
;
4465 struct peer
*member
;
4466 struct listnode
*node
, *nnode
;
4467 struct peer_flag_action action
;
4469 memset(&action
, 0, sizeof(struct peer_flag_action
));
4470 size
= sizeof(peer_flag_action_list
) / sizeof(struct peer_flag_action
);
4472 invert
= CHECK_FLAG(peer
->flags_invert
, flag
);
4473 found
= peer_flag_action_set(peer_flag_action_list
, size
, &action
,
4476 /* Abort if no flag action exists. */
4478 return BGP_ERR_INVALID_FLAG
;
4480 /* Check for flag conflict: STRICT_CAP_MATCH && OVERRIDE_CAPABILITY */
4481 if (set
&& CHECK_FLAG(peer
->flags
| flag
, PEER_FLAG_STRICT_CAP_MATCH
)
4482 && CHECK_FLAG(peer
->flags
| flag
, PEER_FLAG_OVERRIDE_CAPABILITY
))
4483 return BGP_ERR_PEER_FLAG_CONFLICT
;
4485 /* Handle flag updates where desired state matches current state. */
4486 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4487 if (set
&& CHECK_FLAG(peer
->flags
, flag
)) {
4488 COND_FLAG(peer
->flags_override
, flag
, !invert
);
4492 if (!set
&& !CHECK_FLAG(peer
->flags
, flag
)) {
4493 COND_FLAG(peer
->flags_override
, flag
, invert
);
4498 /* Inherit from peer-group or set/unset flags accordingly. */
4499 if (peer_group_active(peer
) && set
== invert
)
4500 peer_flag_inherit(peer
, flag
);
4502 COND_FLAG(peer
->flags
, flag
, set
);
4504 /* Check if handling a regular peer. */
4505 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4506 /* Update flag override state accordingly. */
4507 COND_FLAG(peer
->flags_override
, flag
, set
!= invert
);
4510 * For the extended next-hop encoding flag we need to turn RAs
4511 * on if flag is being set, but only turn RAs off if the flag
4512 * is being unset on this peer and if this peer is a member of a
4513 * peer-group, the peer-group also doesn't have the flag set.
4515 if (flag
== PEER_FLAG_CAPABILITY_ENHE
) {
4517 bgp_zebra_initiate_radv(peer
->bgp
, peer
);
4518 } else if (peer_group_active(peer
)) {
4519 if (!CHECK_FLAG(peer
->group
->conf
->flags
,
4522 bgp_zebra_terminate_radv(peer
->bgp
,
4525 bgp_zebra_terminate_radv(peer
->bgp
, peer
);
4528 /* Execute flag action on peer. */
4529 if (action
.type
== peer_change_reset
)
4530 peer_flag_modify_action(peer
, flag
);
4532 /* Skip peer-group mechanics for regular peers. */
4537 * Update peer-group members, unless they are explicitly overriding
4538 * peer-group configuration.
4540 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4541 /* Skip peers with overridden configuration. */
4542 if (CHECK_FLAG(member
->flags_override
, flag
))
4545 /* Check if only member without group is inverted. */
4547 CHECK_FLAG(member
->flags_invert
, flag
) && !invert
;
4549 /* Skip peers with equivalent configuration. */
4550 if (set
!= member_invert
&& CHECK_FLAG(member
->flags
, flag
))
4553 if (set
== member_invert
&& !CHECK_FLAG(member
->flags
, flag
))
4556 /* Update flag on peer-group member. */
4557 COND_FLAG(member
->flags
, flag
, set
!= member_invert
);
4559 if (flag
== PEER_FLAG_CAPABILITY_ENHE
&& !member
->conf_if
)
4560 set
? bgp_zebra_initiate_radv(member
->bgp
, member
)
4561 : bgp_zebra_terminate_radv(member
->bgp
, member
);
4563 /* Execute flag action on peer-group member. */
4564 if (action
.type
== peer_change_reset
)
4565 peer_flag_modify_action(member
, flag
);
4571 int peer_flag_set(struct peer
*peer
, uint64_t flag
)
4573 return peer_flag_modify(peer
, flag
, 1);
4576 int peer_flag_unset(struct peer
*peer
, uint64_t flag
)
4578 return peer_flag_modify(peer
, flag
, 0);
4581 static int peer_af_flag_modify(struct peer
*peer
, afi_t afi
, safi_t safi
,
4582 uint64_t flag
, bool set
)
4586 bool invert
, member_invert
;
4587 struct peer
*member
;
4588 struct listnode
*node
, *nnode
;
4589 struct peer_flag_action action
;
4590 enum bgp_peer_sort ptype
;
4592 memset(&action
, 0, sizeof(struct peer_flag_action
));
4593 size
= sizeof(peer_af_flag_action_list
)
4594 / sizeof(struct peer_flag_action
);
4596 invert
= CHECK_FLAG(peer
->af_flags_invert
[afi
][safi
], flag
);
4597 found
= peer_flag_action_set(peer_af_flag_action_list
, size
, &action
,
4600 /* Abort if flag action exists. */
4602 return BGP_ERR_INVALID_FLAG
;
4604 ptype
= peer_sort(peer
);
4605 /* Special check for reflector client. */
4606 if (flag
& PEER_FLAG_REFLECTOR_CLIENT
&& ptype
!= BGP_PEER_IBGP
)
4607 return BGP_ERR_NOT_INTERNAL_PEER
;
4609 /* Special check for remove-private-AS. */
4610 if (flag
& PEER_FLAG_REMOVE_PRIVATE_AS
&& ptype
== BGP_PEER_IBGP
)
4611 return BGP_ERR_REMOVE_PRIVATE_AS
;
4613 /* as-override is not allowed for IBGP peers */
4614 if (flag
& PEER_FLAG_AS_OVERRIDE
&& ptype
== BGP_PEER_IBGP
)
4615 return BGP_ERR_AS_OVERRIDE
;
4617 /* Handle flag updates where desired state matches current state. */
4618 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4619 if (set
&& CHECK_FLAG(peer
->af_flags
[afi
][safi
], flag
)) {
4620 COND_FLAG(peer
->af_flags_override
[afi
][safi
], flag
,
4625 if (!set
&& !CHECK_FLAG(peer
->af_flags
[afi
][safi
], flag
)) {
4626 COND_FLAG(peer
->af_flags_override
[afi
][safi
], flag
,
4633 * For EVPN we implicitly set the NEXTHOP_UNCHANGED flag,
4634 * if we are setting/unsetting flags which conflict with this flag
4635 * handle accordingly
4637 if (afi
== AFI_L2VPN
&& safi
== SAFI_EVPN
) {
4641 * if we are setting NEXTHOP_SELF, we need to unset the
4642 * NEXTHOP_UNCHANGED flag
4644 if (CHECK_FLAG(flag
, PEER_FLAG_NEXTHOP_SELF
) ||
4645 CHECK_FLAG(flag
, PEER_FLAG_FORCE_NEXTHOP_SELF
))
4646 UNSET_FLAG(peer
->af_flags
[afi
][safi
],
4647 PEER_FLAG_NEXTHOP_UNCHANGED
);
4651 * if we are unsetting NEXTHOP_SELF, we need to set the
4652 * NEXTHOP_UNCHANGED flag to reset the defaults for EVPN
4654 if (CHECK_FLAG(flag
, PEER_FLAG_NEXTHOP_SELF
) ||
4655 CHECK_FLAG(flag
, PEER_FLAG_FORCE_NEXTHOP_SELF
))
4656 SET_FLAG(peer
->af_flags
[afi
][safi
],
4657 PEER_FLAG_NEXTHOP_UNCHANGED
);
4662 * If the peer is a route server client let's not
4663 * muck with the nexthop on the way out the door
4665 if (flag
& PEER_FLAG_RSERVER_CLIENT
) {
4667 SET_FLAG(peer
->af_flags
[afi
][safi
],
4668 PEER_FLAG_NEXTHOP_UNCHANGED
);
4670 UNSET_FLAG(peer
->af_flags
[afi
][safi
],
4671 PEER_FLAG_NEXTHOP_UNCHANGED
);
4674 /* Inherit from peer-group or set/unset flags accordingly. */
4675 if (peer_group_active(peer
) && set
== invert
)
4676 peer_af_flag_inherit(peer
, afi
, safi
, flag
);
4678 COND_FLAG(peer
->af_flags
[afi
][safi
], flag
, set
);
4680 /* Execute action when peer is established. */
4681 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)
4682 && peer_established(peer
)) {
4683 if (!set
&& flag
== PEER_FLAG_SOFT_RECONFIG
)
4684 bgp_clear_adj_in(peer
, afi
, safi
);
4686 if (flag
== PEER_FLAG_REFLECTOR_CLIENT
)
4687 peer
->last_reset
= PEER_DOWN_RR_CLIENT_CHANGE
;
4688 else if (flag
== PEER_FLAG_RSERVER_CLIENT
)
4689 peer
->last_reset
= PEER_DOWN_RS_CLIENT_CHANGE
;
4690 else if (flag
== PEER_FLAG_ORF_PREFIX_SM
)
4691 peer
->last_reset
= PEER_DOWN_CAPABILITY_CHANGE
;
4692 else if (flag
== PEER_FLAG_ORF_PREFIX_RM
)
4693 peer
->last_reset
= PEER_DOWN_CAPABILITY_CHANGE
;
4695 peer_change_action(peer
, afi
, safi
, action
.type
);
4699 /* Check if handling a regular peer. */
4700 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4701 COND_FLAG(peer
->af_flags_override
[afi
][safi
], flag
,
4705 * Update peer-group members, unless they are explicitly
4706 * overriding peer-group configuration.
4708 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
,
4710 /* Skip peers with overridden configuration. */
4711 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
4715 /* Check if only member without group is inverted. */
4717 CHECK_FLAG(member
->af_flags_invert
[afi
][safi
],
4721 /* Skip peers with equivalent configuration. */
4722 if (set
!= member_invert
4723 && CHECK_FLAG(member
->af_flags
[afi
][safi
], flag
))
4726 if (set
== member_invert
4727 && !CHECK_FLAG(member
->af_flags
[afi
][safi
], flag
))
4730 /* Update flag on peer-group member. */
4731 COND_FLAG(member
->af_flags
[afi
][safi
], flag
,
4732 set
!= member_invert
);
4734 /* Execute flag action on peer-group member. */
4735 if (peer_established(member
)) {
4736 if (!set
&& flag
== PEER_FLAG_SOFT_RECONFIG
)
4737 bgp_clear_adj_in(member
, afi
, safi
);
4739 if (flag
== PEER_FLAG_REFLECTOR_CLIENT
)
4740 member
->last_reset
=
4741 PEER_DOWN_RR_CLIENT_CHANGE
;
4743 == PEER_FLAG_RSERVER_CLIENT
)
4744 member
->last_reset
=
4745 PEER_DOWN_RS_CLIENT_CHANGE
;
4747 == PEER_FLAG_ORF_PREFIX_SM
)
4748 member
->last_reset
=
4749 PEER_DOWN_CAPABILITY_CHANGE
;
4751 == PEER_FLAG_ORF_PREFIX_RM
)
4752 member
->last_reset
=
4753 PEER_DOWN_CAPABILITY_CHANGE
;
4755 peer_change_action(member
, afi
, safi
,
4765 int peer_af_flag_set(struct peer
*peer
, afi_t afi
, safi_t safi
, uint64_t flag
)
4767 return peer_af_flag_modify(peer
, afi
, safi
, flag
, 1);
4770 int peer_af_flag_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, uint64_t flag
)
4772 return peer_af_flag_modify(peer
, afi
, safi
, flag
, 0);
4776 void peer_tx_shutdown_message_set(struct peer
*peer
, const char *msg
)
4778 XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG
, peer
->tx_shutdown_message
);
4779 peer
->tx_shutdown_message
=
4780 msg
? XSTRDUP(MTYPE_PEER_TX_SHUTDOWN_MSG
, msg
) : NULL
;
4783 void peer_tx_shutdown_message_unset(struct peer
*peer
)
4785 XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG
, peer
->tx_shutdown_message
);
4789 /* EBGP multihop configuration. */
4790 int peer_ebgp_multihop_set(struct peer
*peer
, int ttl
)
4792 struct peer_group
*group
;
4793 struct listnode
*node
, *nnode
;
4796 if (peer
->sort
== BGP_PEER_IBGP
|| peer
->conf_if
)
4799 /* is there anything to do? */
4800 if (peer
->ttl
== ttl
)
4803 /* see comment in peer_ttl_security_hops_set() */
4804 if (ttl
!= MAXTTL
) {
4805 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4806 group
= peer
->group
;
4807 if (group
->conf
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
)
4808 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4810 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
,
4812 if (peer1
->sort
== BGP_PEER_IBGP
)
4815 if (peer1
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
)
4816 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4819 if (peer
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
)
4820 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4826 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4827 if (peer
->sort
!= BGP_PEER_IBGP
) {
4828 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4829 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4830 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4832 bgp_session_reset(peer
);
4834 /* Reconfigure BFD peer with new TTL. */
4835 if (peer
->bfd_config
)
4836 bgp_peer_bfd_update_source(peer
);
4839 group
= peer
->group
;
4840 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
4841 if (peer
->sort
== BGP_PEER_IBGP
)
4844 peer
->ttl
= group
->conf
->ttl
;
4846 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4847 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4848 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4850 bgp_session_reset(peer
);
4852 /* Reconfigure BFD peer with new TTL. */
4853 if (peer
->bfd_config
)
4854 bgp_peer_bfd_update_source(peer
);
4860 int peer_ebgp_multihop_unset(struct peer
*peer
)
4862 struct peer_group
*group
;
4863 struct listnode
*node
, *nnode
;
4866 if (peer
->sort
== BGP_PEER_IBGP
)
4869 if (peer
->gtsm_hops
!= BGP_GTSM_HOPS_DISABLED
&& peer
->ttl
!= MAXTTL
)
4870 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
4872 if (peer_group_active(peer
))
4873 ttl
= peer
->group
->conf
->ttl
;
4875 ttl
= BGP_DEFAULT_TTL
;
4877 if (ttl
== peer
->ttl
)
4882 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4883 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4884 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
4885 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4887 bgp_session_reset(peer
);
4889 /* Reconfigure BFD peer with new TTL. */
4890 if (peer
->bfd_config
)
4891 bgp_peer_bfd_update_source(peer
);
4893 group
= peer
->group
;
4894 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
4895 if (peer
->sort
== BGP_PEER_IBGP
)
4898 peer
->ttl
= BGP_DEFAULT_TTL
;
4900 if (peer
->fd
>= 0) {
4901 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
4903 peer
, BGP_NOTIFY_CEASE
,
4904 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
4906 bgp_session_reset(peer
);
4909 /* Reconfigure BFD peer with new TTL. */
4910 if (peer
->bfd_config
)
4911 bgp_peer_bfd_update_source(peer
);
4917 /* Set Open Policy Role and check its correctness */
4918 int peer_role_set(struct peer
*peer
, uint8_t role
, bool strict_mode
)
4920 struct peer
*member
;
4921 struct listnode
*node
, *nnode
;
4923 peer_flag_set(peer
, PEER_FLAG_ROLE
);
4925 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
4926 if (peer
->sort
!= BGP_PEER_EBGP
)
4927 return BGP_ERR_INVALID_INTERNAL_ROLE
;
4929 if (peer
->local_role
== role
) {
4930 if (CHECK_FLAG(peer
->flags
,
4931 PEER_FLAG_ROLE_STRICT_MODE
) &&
4933 /* TODO: Is session restart needed if it was
4936 UNSET_FLAG(peer
->flags
,
4937 PEER_FLAG_ROLE_STRICT_MODE
);
4938 if (!CHECK_FLAG(peer
->flags
,
4939 PEER_FLAG_ROLE_STRICT_MODE
) &&
4941 SET_FLAG(peer
->flags
,
4942 PEER_FLAG_ROLE_STRICT_MODE
);
4943 /* Restart session to throw Role Mismatch
4946 if (peer
->remote_role
== ROLE_UNDEFINED
)
4947 bgp_session_reset(peer
);
4950 peer
->local_role
= role
;
4952 SET_FLAG(peer
->flags
,
4953 PEER_FLAG_ROLE_STRICT_MODE
);
4955 UNSET_FLAG(peer
->flags
,
4956 PEER_FLAG_ROLE_STRICT_MODE
);
4957 bgp_session_reset(peer
);
4963 peer
->local_role
= role
;
4964 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
4965 if (member
->sort
!= BGP_PEER_EBGP
)
4966 return BGP_ERR_INVALID_INTERNAL_ROLE
;
4968 if (member
->local_role
== role
) {
4969 if (CHECK_FLAG(member
->flags
,
4970 PEER_FLAG_ROLE_STRICT_MODE
) &&
4972 /* TODO: Is session restart needed if it was
4975 UNSET_FLAG(member
->flags
,
4976 PEER_FLAG_ROLE_STRICT_MODE
);
4977 if (!CHECK_FLAG(member
->flags
,
4978 PEER_FLAG_ROLE_STRICT_MODE
) &&
4980 SET_FLAG(peer
->flags
,
4981 PEER_FLAG_ROLE_STRICT_MODE
);
4982 SET_FLAG(member
->flags
,
4983 PEER_FLAG_ROLE_STRICT_MODE
);
4984 /* Restart session to throw Role Mismatch
4987 if (member
->remote_role
== ROLE_UNDEFINED
)
4988 bgp_session_reset(member
);
4991 member
->local_role
= role
;
4994 SET_FLAG(peer
->flags
,
4995 PEER_FLAG_ROLE_STRICT_MODE
);
4996 SET_FLAG(member
->flags
,
4997 PEER_FLAG_ROLE_STRICT_MODE
);
4999 UNSET_FLAG(member
->flags
,
5000 PEER_FLAG_ROLE_STRICT_MODE
);
5002 bgp_session_reset(member
);
5009 int peer_role_unset(struct peer
*peer
)
5011 struct peer
*member
;
5012 struct listnode
*node
, *nnode
;
5014 peer_flag_unset(peer
, PEER_FLAG_ROLE
);
5016 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5017 return peer_role_set(peer
, ROLE_UNDEFINED
, 0);
5019 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
))
5020 peer_role_set(member
, ROLE_UNDEFINED
, 0);
5025 /* Neighbor description. */
5026 void peer_description_set(struct peer
*peer
, const char *desc
)
5028 XFREE(MTYPE_PEER_DESC
, peer
->desc
);
5030 peer
->desc
= XSTRDUP(MTYPE_PEER_DESC
, desc
);
5033 void peer_description_unset(struct peer
*peer
)
5035 XFREE(MTYPE_PEER_DESC
, peer
->desc
);
5038 /* Neighbor update-source. */
5039 int peer_update_source_if_set(struct peer
*peer
, const char *ifname
)
5041 struct peer
*member
;
5042 struct listnode
*node
, *nnode
;
5044 /* Set flag and configuration on peer. */
5045 peer_flag_set(peer
, PEER_FLAG_UPDATE_SOURCE
);
5046 if (peer
->update_if
) {
5047 if (strcmp(peer
->update_if
, ifname
) == 0)
5049 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
5051 peer
->update_if
= XSTRDUP(MTYPE_PEER_UPDATE_SOURCE
, ifname
);
5052 sockunion_free(peer
->update_source
);
5053 peer
->update_source
= NULL
;
5055 /* Check if handling a regular peer. */
5056 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5057 /* Send notification or reset peer depending on state. */
5058 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
5059 peer
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
5060 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
5061 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5063 bgp_session_reset(peer
);
5065 /* Apply new source configuration to BFD session. */
5066 if (peer
->bfd_config
)
5067 bgp_peer_bfd_update_source(peer
);
5069 /* Skip peer-group mechanics for regular peers. */
5074 * Set flag and configuration on all peer-group members, unless they are
5075 * explicitly overriding peer-group configuration.
5077 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5078 /* Skip peers with overridden configuration. */
5079 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_UPDATE_SOURCE
))
5082 /* Skip peers with the same configuration. */
5083 if (member
->update_if
) {
5084 if (strcmp(member
->update_if
, ifname
) == 0)
5086 XFREE(MTYPE_PEER_UPDATE_SOURCE
, member
->update_if
);
5089 /* Set flag and configuration on peer-group member. */
5090 SET_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
);
5091 member
->update_if
= XSTRDUP(MTYPE_PEER_UPDATE_SOURCE
, ifname
);
5092 sockunion_free(member
->update_source
);
5093 member
->update_source
= NULL
;
5095 /* Send notification or reset peer depending on state. */
5096 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
5097 member
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
5098 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
5099 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5101 bgp_session_reset(member
);
5103 /* Apply new source configuration to BFD session. */
5104 if (member
->bfd_config
)
5105 bgp_peer_bfd_update_source(member
);
5111 void peer_update_source_addr_set(struct peer
*peer
, const union sockunion
*su
)
5113 struct peer
*member
;
5114 struct listnode
*node
, *nnode
;
5116 /* Set flag and configuration on peer. */
5117 peer_flag_set(peer
, PEER_FLAG_UPDATE_SOURCE
);
5118 if (peer
->update_source
) {
5119 if (sockunion_cmp(peer
->update_source
, su
) == 0)
5121 sockunion_free(peer
->update_source
);
5123 peer
->update_source
= sockunion_dup(su
);
5124 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
5126 /* Check if handling a regular peer. */
5127 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5128 /* Send notification or reset peer depending on state. */
5129 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
5130 peer
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
5131 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
5132 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5134 bgp_session_reset(peer
);
5136 /* Apply new source configuration to BFD session. */
5137 if (peer
->bfd_config
)
5138 bgp_peer_bfd_update_source(peer
);
5140 /* Skip peer-group mechanics for regular peers. */
5145 * Set flag and configuration on all peer-group members, unless they are
5146 * explicitly overriding peer-group configuration.
5148 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5149 /* Skip peers with overridden configuration. */
5150 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_UPDATE_SOURCE
))
5153 /* Skip peers with the same configuration. */
5154 if (member
->update_source
) {
5155 if (sockunion_cmp(member
->update_source
, su
) == 0)
5157 sockunion_free(member
->update_source
);
5160 /* Set flag and configuration on peer-group member. */
5161 SET_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
);
5162 member
->update_source
= sockunion_dup(su
);
5163 XFREE(MTYPE_PEER_UPDATE_SOURCE
, member
->update_if
);
5165 /* Send notification or reset peer depending on state. */
5166 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
5167 member
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
5168 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
5169 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5171 bgp_session_reset(member
);
5173 /* Apply new source configuration to BFD session. */
5174 if (member
->bfd_config
)
5175 bgp_peer_bfd_update_source(member
);
5179 void peer_update_source_unset(struct peer
*peer
)
5181 struct peer
*member
;
5182 struct listnode
*node
, *nnode
;
5184 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_UPDATE_SOURCE
))
5187 /* Inherit configuration from peer-group if peer is member. */
5188 if (peer_group_active(peer
)) {
5189 peer_flag_inherit(peer
, PEER_FLAG_UPDATE_SOURCE
);
5190 PEER_SU_ATTR_INHERIT(peer
, peer
->group
, update_source
);
5191 PEER_STR_ATTR_INHERIT(peer
, peer
->group
, update_if
,
5192 MTYPE_PEER_UPDATE_SOURCE
);
5194 /* Otherwise remove flag and configuration from peer. */
5195 peer_flag_unset(peer
, PEER_FLAG_UPDATE_SOURCE
);
5196 sockunion_free(peer
->update_source
);
5197 peer
->update_source
= NULL
;
5198 XFREE(MTYPE_PEER_UPDATE_SOURCE
, peer
->update_if
);
5201 /* Check if handling a regular peer. */
5202 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5203 /* Send notification or reset peer depending on state. */
5204 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
5205 peer
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
5206 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
5207 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5209 bgp_session_reset(peer
);
5211 /* Apply new source configuration to BFD session. */
5212 if (peer
->bfd_config
)
5213 bgp_peer_bfd_update_source(peer
);
5215 /* Skip peer-group mechanics for regular peers. */
5220 * Set flag and configuration on all peer-group members, unless they are
5221 * explicitly overriding peer-group configuration.
5223 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5224 /* Skip peers with overridden configuration. */
5225 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_UPDATE_SOURCE
))
5228 /* Skip peers with the same configuration. */
5229 if (!CHECK_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
)
5230 && !member
->update_source
&& !member
->update_if
)
5233 /* Remove flag and configuration on peer-group member. */
5234 UNSET_FLAG(member
->flags
, PEER_FLAG_UPDATE_SOURCE
);
5235 sockunion_free(member
->update_source
);
5236 member
->update_source
= NULL
;
5237 XFREE(MTYPE_PEER_UPDATE_SOURCE
, member
->update_if
);
5239 /* Send notification or reset peer depending on state. */
5240 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
5241 member
->last_reset
= PEER_DOWN_UPDATE_SOURCE_CHANGE
;
5242 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
5243 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
5245 bgp_session_reset(member
);
5247 /* Apply new source configuration to BFD session. */
5248 if (member
->bfd_config
)
5249 bgp_peer_bfd_update_source(member
);
5253 int peer_default_originate_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
5254 const char *rmap
, struct route_map
*route_map
)
5256 struct peer
*member
;
5257 struct listnode
*node
, *nnode
;
5258 struct update_subgroup
*subgrp
;
5260 /* Set flag and configuration on peer. */
5261 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_DEFAULT_ORIGINATE
);
5263 subgrp
= peer_subgroup(peer
, afi
, safi
);
5266 if (!peer
->default_rmap
[afi
][safi
].name
5267 || strcmp(rmap
, peer
->default_rmap
[afi
][safi
].name
) != 0) {
5268 if (peer
->default_rmap
[afi
][safi
].name
)
5269 XFREE(MTYPE_ROUTE_MAP_NAME
,
5270 peer
->default_rmap
[afi
][safi
].name
);
5273 * When there is a change in route-map policy,
5274 * this flow gets triggered. Since, the default
5275 * route is already originated, the flag is set.
5276 * The flag should be unset here,
5277 * to trigger the flow of sending update message.
5280 UNSET_FLAG(subgrp
->sflags
,
5281 SUBGRP_STATUS_DEFAULT_ORIGINATE
);
5283 route_map_counter_decrement(peer
->default_rmap
[afi
][safi
].map
);
5284 peer
->default_rmap
[afi
][safi
].name
=
5285 XSTRDUP(MTYPE_ROUTE_MAP_NAME
, rmap
);
5286 peer
->default_rmap
[afi
][safi
].map
= route_map
;
5287 route_map_counter_increment(route_map
);
5290 if (peer
->default_rmap
[afi
][safi
].name
)
5291 XFREE(MTYPE_ROUTE_MAP_NAME
,
5292 peer
->default_rmap
[afi
][safi
].name
);
5295 * This is triggered in case of route-map deletion.
5296 * The flag needs to be unset, to trigger the flow
5297 * of sending an update message.
5300 UNSET_FLAG(subgrp
->sflags
,
5301 SUBGRP_STATUS_DEFAULT_ORIGINATE
);
5303 route_map_counter_decrement(peer
->default_rmap
[afi
][safi
].map
);
5304 peer
->default_rmap
[afi
][safi
].name
= NULL
;
5305 peer
->default_rmap
[afi
][safi
].map
= NULL
;
5308 /* Check if handling a regular peer. */
5309 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5310 /* Update peer route announcements. */
5311 if (peer_established(peer
) && peer
->afc_nego
[afi
][safi
]) {
5312 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
5313 bgp_default_originate(peer
, afi
, safi
, 0);
5314 bgp_announce_route(peer
, afi
, safi
, false);
5317 /* Skip peer-group mechanics for regular peers. */
5322 * Set flag and configuration on all peer-group members, unless they are
5323 * explicitly overriding peer-group configuration.
5325 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5326 /* Skip peers with overridden configuration. */
5327 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
5328 PEER_FLAG_DEFAULT_ORIGINATE
))
5331 /* Set flag and configuration on peer-group member. */
5332 SET_FLAG(member
->af_flags
[afi
][safi
],
5333 PEER_FLAG_DEFAULT_ORIGINATE
);
5335 if (member
->default_rmap
[afi
][safi
].name
)
5336 XFREE(MTYPE_ROUTE_MAP_NAME
,
5337 member
->default_rmap
[afi
][safi
].name
);
5338 route_map_counter_decrement(
5339 member
->default_rmap
[afi
][safi
].map
);
5340 member
->default_rmap
[afi
][safi
].name
=
5341 XSTRDUP(MTYPE_ROUTE_MAP_NAME
, rmap
);
5342 member
->default_rmap
[afi
][safi
].map
= route_map
;
5343 route_map_counter_increment(route_map
);
5346 /* Update peer route announcements. */
5347 if (peer_established(member
) && member
->afc_nego
[afi
][safi
]) {
5348 update_group_adjust_peer(
5349 peer_af_find(member
, afi
, safi
));
5350 bgp_default_originate(member
, afi
, safi
, 0);
5351 bgp_announce_route(member
, afi
, safi
, false);
5358 int peer_default_originate_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
5360 struct peer
*member
;
5361 struct listnode
*node
, *nnode
;
5363 /* Inherit configuration from peer-group if peer is member. */
5364 if (peer_group_active(peer
)) {
5365 peer_af_flag_inherit(peer
, afi
, safi
,
5366 PEER_FLAG_DEFAULT_ORIGINATE
);
5367 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
5368 default_rmap
[afi
][safi
].name
,
5369 MTYPE_ROUTE_MAP_NAME
);
5370 PEER_ATTR_INHERIT(peer
, peer
->group
,
5371 default_rmap
[afi
][safi
].map
);
5373 /* Otherwise remove flag and configuration from peer. */
5374 peer_af_flag_unset(peer
, afi
, safi
,
5375 PEER_FLAG_DEFAULT_ORIGINATE
);
5376 if (peer
->default_rmap
[afi
][safi
].name
)
5377 XFREE(MTYPE_ROUTE_MAP_NAME
,
5378 peer
->default_rmap
[afi
][safi
].name
);
5379 route_map_counter_decrement(peer
->default_rmap
[afi
][safi
].map
);
5380 peer
->default_rmap
[afi
][safi
].name
= NULL
;
5381 peer
->default_rmap
[afi
][safi
].map
= NULL
;
5384 /* Check if handling a regular peer. */
5385 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5386 /* Update peer route announcements. */
5387 if (peer_established(peer
) && peer
->afc_nego
[afi
][safi
]) {
5388 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
5389 bgp_default_originate(peer
, afi
, safi
, 1);
5390 bgp_announce_route(peer
, afi
, safi
, false);
5393 /* Skip peer-group mechanics for regular peers. */
5398 * Remove flag and configuration from all peer-group members, unless
5399 * they are explicitly overriding peer-group configuration.
5401 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5402 /* Skip peers with overridden configuration. */
5403 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
5404 PEER_FLAG_DEFAULT_ORIGINATE
))
5407 /* Remove flag and configuration on peer-group member. */
5408 UNSET_FLAG(member
->af_flags
[afi
][safi
],
5409 PEER_FLAG_DEFAULT_ORIGINATE
);
5410 if (member
->default_rmap
[afi
][safi
].name
)
5411 XFREE(MTYPE_ROUTE_MAP_NAME
,
5412 member
->default_rmap
[afi
][safi
].name
);
5413 route_map_counter_decrement(member
->default_rmap
[afi
][safi
].map
);
5414 member
->default_rmap
[afi
][safi
].name
= NULL
;
5415 member
->default_rmap
[afi
][safi
].map
= NULL
;
5417 /* Update peer route announcements. */
5418 if (peer_established(member
) && member
->afc_nego
[afi
][safi
]) {
5419 update_group_adjust_peer(peer_af_find(member
, afi
, safi
));
5420 bgp_default_originate(member
, afi
, safi
, 1);
5421 bgp_announce_route(member
, afi
, safi
, false);
5428 void peer_port_set(struct peer
*peer
, uint16_t port
)
5431 peer_flag_set(peer
, PEER_FLAG_PORT
);
5434 void peer_port_unset(struct peer
*peer
)
5436 peer
->port
= BGP_PORT_DEFAULT
;
5437 peer_flag_unset(peer
, PEER_FLAG_PORT
);
5440 /* Set the TCP-MSS value in the peer structure,
5441 * This gets applied only after connection reset
5442 * So this value will be used in bgp_connect.
5444 void peer_tcp_mss_set(struct peer
*peer
, uint32_t tcp_mss
)
5446 peer
->tcp_mss
= tcp_mss
;
5447 SET_FLAG(peer
->flags
, PEER_FLAG_TCP_MSS
);
5450 /* Reset the TCP-MSS value in the peer structure,
5451 * This gets applied only after connection reset
5452 * So this value will be used in bgp_connect.
5454 void peer_tcp_mss_unset(struct peer
*peer
)
5456 UNSET_FLAG(peer
->flags
, PEER_FLAG_TCP_MSS
);
5461 * Helper function that is called after the name of the policy
5462 * being used by a peer has changed (AF specific). Automatically
5463 * initiates inbound or outbound processing as needed.
5465 static void peer_on_policy_change(struct peer
*peer
, afi_t afi
, safi_t safi
,
5469 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
5470 if (peer_established(peer
))
5471 bgp_announce_route(peer
, afi
, safi
, false);
5473 if (!peer_established(peer
))
5476 if (CHECK_FLAG(peer
->af_flags
[afi
][safi
],
5477 PEER_FLAG_SOFT_RECONFIG
)) {
5478 bgp_soft_reconfig_in(peer
, afi
, safi
);
5479 } else if (CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_OLD_RCV
) ||
5480 CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_NEW_RCV
)) {
5481 if (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
5482 PEER_CAP_ORF_PREFIX_SM_ADV
) &&
5483 (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
5484 PEER_CAP_ORF_PREFIX_RM_RCV
) ||
5485 CHECK_FLAG(peer
->af_cap
[afi
][safi
],
5486 PEER_CAP_ORF_PREFIX_RM_OLD_RCV
)))
5487 peer_clear_soft(peer
, afi
, safi
,
5488 BGP_CLEAR_SOFT_IN_ORF_PREFIX
);
5490 bgp_route_refresh_send(
5491 peer
, afi
, safi
, 0, 0, 0,
5492 BGP_ROUTE_REFRESH_NORMAL
);
5498 /* neighbor weight. */
5499 int peer_weight_set(struct peer
*peer
, afi_t afi
, safi_t safi
, uint16_t weight
)
5501 struct peer
*member
;
5502 struct listnode
*node
, *nnode
;
5504 /* Set flag and configuration on peer. */
5505 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_WEIGHT
);
5506 if (peer
->weight
[afi
][safi
] != weight
) {
5507 peer
->weight
[afi
][safi
] = weight
;
5508 peer_on_policy_change(peer
, afi
, safi
, 0);
5511 /* Skip peer-group mechanics for regular peers. */
5512 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5516 * Set flag and configuration on all peer-group members, unless they are
5517 * explicitly overriding peer-group configuration.
5519 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5520 /* Skip peers with overridden configuration. */
5521 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
5525 /* Set flag and configuration on peer-group member. */
5526 SET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
);
5527 if (member
->weight
[afi
][safi
] != weight
) {
5528 member
->weight
[afi
][safi
] = weight
;
5529 peer_on_policy_change(member
, afi
, safi
, 0);
5536 int peer_weight_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
5538 struct peer
*member
;
5539 struct listnode
*node
, *nnode
;
5541 if (!CHECK_FLAG(peer
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
))
5544 /* Inherit configuration from peer-group if peer is member. */
5545 if (peer_group_active(peer
)) {
5546 peer_af_flag_inherit(peer
, afi
, safi
, PEER_FLAG_WEIGHT
);
5547 PEER_ATTR_INHERIT(peer
, peer
->group
, weight
[afi
][safi
]);
5549 peer_on_policy_change(peer
, afi
, safi
, 0);
5553 /* Remove flag and configuration from peer. */
5554 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_WEIGHT
);
5555 peer
->weight
[afi
][safi
] = 0;
5556 peer_on_policy_change(peer
, afi
, safi
, 0);
5558 /* Skip peer-group mechanics for regular peers. */
5559 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5563 * Remove flag and configuration from all peer-group members, unless
5564 * they are explicitly overriding peer-group configuration.
5566 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5567 /* Skip peers with overridden configuration. */
5568 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
5572 /* Skip peers where flag is already disabled. */
5573 if (!CHECK_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
))
5576 /* Remove flag and configuration on peer-group member. */
5577 UNSET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_WEIGHT
);
5578 member
->weight
[afi
][safi
] = 0;
5579 peer_on_policy_change(member
, afi
, safi
, 0);
5585 int peer_timers_set(struct peer
*peer
, uint32_t keepalive
, uint32_t holdtime
)
5587 struct peer
*member
;
5588 struct listnode
*node
, *nnode
;
5590 if (keepalive
> UINT16_MAX
)
5591 return BGP_ERR_INVALID_VALUE
;
5593 if (holdtime
> UINT16_MAX
)
5594 return BGP_ERR_INVALID_VALUE
;
5596 if (holdtime
< 3 && holdtime
!= 0)
5597 return BGP_ERR_INVALID_VALUE
;
5599 /* Set flag and configuration on peer. */
5600 peer_flag_set(peer
, PEER_FLAG_TIMER
);
5601 peer
->holdtime
= holdtime
;
5602 peer
->keepalive
= (keepalive
< holdtime
/ 3 ? keepalive
: holdtime
/ 3);
5604 /* Skip peer-group mechanics for regular peers. */
5605 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5609 * Set flag and configuration on all peer-group members, unless they are
5610 * explicitly 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_TIMER
))
5617 /* Set flag and configuration on peer-group member. */
5618 SET_FLAG(member
->flags
, PEER_FLAG_TIMER
);
5619 PEER_ATTR_INHERIT(member
, peer
->group
, holdtime
);
5620 PEER_ATTR_INHERIT(member
, peer
->group
, keepalive
);
5626 int peer_timers_unset(struct peer
*peer
)
5628 struct peer
*member
;
5629 struct listnode
*node
, *nnode
;
5631 /* Inherit configuration from peer-group if peer is member. */
5632 if (peer_group_active(peer
)) {
5633 peer_flag_inherit(peer
, PEER_FLAG_TIMER
);
5634 PEER_ATTR_INHERIT(peer
, peer
->group
, holdtime
);
5635 PEER_ATTR_INHERIT(peer
, peer
->group
, keepalive
);
5637 /* Otherwise remove flag and configuration from peer. */
5638 peer_flag_unset(peer
, PEER_FLAG_TIMER
);
5640 peer
->keepalive
= 0;
5643 /* Skip peer-group mechanics for regular peers. */
5644 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5648 * Remove flag and configuration from all peer-group members, unless
5649 * they are explicitly overriding peer-group configuration.
5651 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5652 /* Skip peers with overridden configuration. */
5653 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_TIMER
))
5656 /* Remove flag and configuration on peer-group member. */
5657 UNSET_FLAG(member
->flags
, PEER_FLAG_TIMER
);
5658 member
->holdtime
= 0;
5659 member
->keepalive
= 0;
5665 int peer_timers_connect_set(struct peer
*peer
, uint32_t connect
)
5667 struct peer
*member
;
5668 struct listnode
*node
, *nnode
;
5670 if (connect
> UINT16_MAX
)
5671 return BGP_ERR_INVALID_VALUE
;
5673 /* Set flag and configuration on peer. */
5674 peer_flag_set(peer
, PEER_FLAG_TIMER_CONNECT
);
5675 peer
->connect
= connect
;
5676 peer
->v_connect
= connect
;
5678 /* Skip peer-group mechanics for regular peers. */
5679 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5680 if (!peer_established(peer
)) {
5681 if (peer_active(peer
))
5682 BGP_EVENT_ADD(peer
, BGP_Stop
);
5683 BGP_EVENT_ADD(peer
, BGP_Start
);
5688 * Set flag and configuration on all peer-group members, unless they are
5689 * explicitly overriding peer-group configuration.
5691 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5692 /* Skip peers with overridden configuration. */
5693 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_TIMER_CONNECT
))
5696 /* Set flag and configuration on peer-group member. */
5697 SET_FLAG(member
->flags
, PEER_FLAG_TIMER_CONNECT
);
5698 member
->connect
= connect
;
5699 member
->v_connect
= connect
;
5701 if (!peer_established(member
)) {
5702 if (peer_active(member
))
5703 BGP_EVENT_ADD(member
, BGP_Stop
);
5704 BGP_EVENT_ADD(member
, BGP_Start
);
5711 int peer_timers_connect_unset(struct peer
*peer
)
5713 struct peer
*member
;
5714 struct listnode
*node
, *nnode
;
5716 /* Inherit configuration from peer-group if peer is member. */
5717 if (peer_group_active(peer
)) {
5718 peer_flag_inherit(peer
, PEER_FLAG_TIMER_CONNECT
);
5719 PEER_ATTR_INHERIT(peer
, peer
->group
, connect
);
5721 /* Otherwise remove flag and configuration from peer. */
5722 peer_flag_unset(peer
, PEER_FLAG_TIMER_CONNECT
);
5726 /* Set timer with fallback to default value. */
5728 peer
->v_connect
= peer
->connect
;
5730 peer
->v_connect
= peer
->bgp
->default_connect_retry
;
5732 /* Skip peer-group mechanics for regular peers. */
5733 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5734 if (!peer_established(peer
)) {
5735 if (peer_active(peer
))
5736 BGP_EVENT_ADD(peer
, BGP_Stop
);
5737 BGP_EVENT_ADD(peer
, BGP_Start
);
5742 * Remove flag and configuration from all peer-group members, unless
5743 * they are explicitly overriding peer-group configuration.
5745 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5746 /* Skip peers with overridden configuration. */
5747 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_TIMER_CONNECT
))
5750 /* Remove flag and configuration on peer-group member. */
5751 UNSET_FLAG(member
->flags
, PEER_FLAG_TIMER_CONNECT
);
5752 member
->connect
= 0;
5753 member
->v_connect
= peer
->bgp
->default_connect_retry
;
5755 if (!peer_established(member
)) {
5756 if (peer_active(member
))
5757 BGP_EVENT_ADD(member
, BGP_Stop
);
5758 BGP_EVENT_ADD(member
, BGP_Start
);
5765 int peer_advertise_interval_set(struct peer
*peer
, uint32_t routeadv
)
5767 struct peer
*member
;
5768 struct listnode
*node
, *nnode
;
5771 return BGP_ERR_INVALID_VALUE
;
5773 /* Set flag and configuration on peer. */
5774 peer_flag_set(peer
, PEER_FLAG_ROUTEADV
);
5775 peer
->routeadv
= routeadv
;
5776 peer
->v_routeadv
= routeadv
;
5778 /* Check if handling a regular peer. */
5779 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5780 /* Update peer route announcements. */
5781 update_group_adjust_peer_afs(peer
);
5782 if (peer_established(peer
))
5783 bgp_announce_route_all(peer
);
5785 /* Skip peer-group mechanics for regular peers. */
5790 * Set flag and configuration on all peer-group members, unless they are
5791 * explicitly overriding peer-group configuration.
5793 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5794 /* Skip peers with overridden configuration. */
5795 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_ROUTEADV
))
5798 /* Set flag and configuration on peer-group member. */
5799 SET_FLAG(member
->flags
, PEER_FLAG_ROUTEADV
);
5800 member
->routeadv
= routeadv
;
5801 member
->v_routeadv
= routeadv
;
5803 /* Update peer route announcements. */
5804 update_group_adjust_peer_afs(member
);
5805 if (peer_established(member
))
5806 bgp_announce_route_all(member
);
5812 int peer_advertise_interval_unset(struct peer
*peer
)
5814 struct peer
*member
;
5815 struct listnode
*node
, *nnode
;
5817 /* Inherit configuration from peer-group if peer is member. */
5818 if (peer_group_active(peer
)) {
5819 peer_flag_inherit(peer
, PEER_FLAG_ROUTEADV
);
5820 PEER_ATTR_INHERIT(peer
, peer
->group
, routeadv
);
5822 /* Otherwise remove flag and configuration from peer. */
5823 peer_flag_unset(peer
, PEER_FLAG_ROUTEADV
);
5827 /* Set timer with fallback to default value. */
5829 peer
->v_routeadv
= peer
->routeadv
;
5831 peer
->v_routeadv
= (peer
->sort
== BGP_PEER_IBGP
)
5832 ? BGP_DEFAULT_IBGP_ROUTEADV
5833 : BGP_DEFAULT_EBGP_ROUTEADV
;
5835 /* Check if handling a regular peer. */
5836 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
5837 /* Update peer route announcements. */
5838 update_group_adjust_peer_afs(peer
);
5839 if (peer_established(peer
))
5840 bgp_announce_route_all(peer
);
5842 /* Skip peer-group mechanics for regular peers. */
5847 * Remove flag and configuration from all peer-group members, unless
5848 * they are explicitly overriding peer-group configuration.
5850 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
5851 /* Skip peers with overridden configuration. */
5852 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_ROUTEADV
))
5855 /* Remove flag and configuration on peer-group member. */
5856 UNSET_FLAG(member
->flags
, PEER_FLAG_ROUTEADV
);
5857 member
->routeadv
= 0;
5858 member
->v_routeadv
= (member
->sort
== BGP_PEER_IBGP
)
5859 ? BGP_DEFAULT_IBGP_ROUTEADV
5860 : BGP_DEFAULT_EBGP_ROUTEADV
;
5862 /* Update peer route announcements. */
5863 update_group_adjust_peer_afs(member
);
5864 if (peer_established(member
))
5865 bgp_announce_route_all(member
);
5871 /* set the peers RFC 4271 DelayOpen session attribute flag and DelayOpenTimer
5874 int peer_timers_delayopen_set(struct peer
*peer
, uint32_t delayopen
)
5876 struct peer
*member
;
5877 struct listnode
*node
;
5879 /* Set peers session attribute flag and timer interval. */
5880 peer_flag_set(peer
, PEER_FLAG_TIMER_DELAYOPEN
);
5881 peer
->delayopen
= delayopen
;
5882 peer
->v_delayopen
= delayopen
;
5884 /* Skip group mechanics for regular peers. */
5885 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5888 /* Set flag and configuration on all peer-group members, unless they are
5889 * explicitly overriding peer-group configuration.
5891 for (ALL_LIST_ELEMENTS_RO(peer
->group
->peer
, node
, member
)) {
5892 /* Skip peers with overridden configuration. */
5893 if (CHECK_FLAG(member
->flags_override
,
5894 PEER_FLAG_TIMER_DELAYOPEN
))
5897 /* Set session attribute flag and timer intervals on peer-group
5900 SET_FLAG(member
->flags
, PEER_FLAG_TIMER_DELAYOPEN
);
5901 member
->delayopen
= delayopen
;
5902 member
->v_delayopen
= delayopen
;
5908 /* unset the peers RFC 4271 DelayOpen session attribute flag and reset the
5909 * DelayOpenTimer interval to the default value.
5911 int peer_timers_delayopen_unset(struct peer
*peer
)
5913 struct peer
*member
;
5914 struct listnode
*node
;
5916 /* Inherit configuration from peer-group if peer is member. */
5917 if (peer_group_active(peer
)) {
5918 peer_flag_inherit(peer
, PEER_FLAG_TIMER_DELAYOPEN
);
5919 PEER_ATTR_INHERIT(peer
, peer
->group
, delayopen
);
5921 /* Otherwise remove session attribute flag and set timer
5922 * interval to default value.
5924 peer_flag_unset(peer
, PEER_FLAG_TIMER_DELAYOPEN
);
5925 peer
->delayopen
= peer
->bgp
->default_delayopen
;
5928 /* Set timer value to zero */
5929 peer
->v_delayopen
= 0;
5931 /* Skip peer-group mechanics for regular peers. */
5932 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
5935 /* Remove flag and configuration from all peer-group members, unless
5936 * they are explicitly overriding peer-group configuration.
5938 for (ALL_LIST_ELEMENTS_RO(peer
->group
->peer
, node
, member
)) {
5939 /* Skip peers with overridden configuration. */
5940 if (CHECK_FLAG(member
->flags_override
,
5941 PEER_FLAG_TIMER_DELAYOPEN
))
5944 /* Remove session attribute flag, reset the timer interval to
5945 * the default value and set the timer value to zero.
5947 UNSET_FLAG(member
->flags
, PEER_FLAG_TIMER_DELAYOPEN
);
5948 member
->delayopen
= peer
->bgp
->default_delayopen
;
5949 member
->v_delayopen
= 0;
5955 /* neighbor interface */
5956 void peer_interface_set(struct peer
*peer
, const char *str
)
5958 XFREE(MTYPE_BGP_PEER_IFNAME
, peer
->ifname
);
5959 peer
->ifname
= XSTRDUP(MTYPE_BGP_PEER_IFNAME
, str
);
5962 void peer_interface_unset(struct peer
*peer
)
5964 XFREE(MTYPE_BGP_PEER_IFNAME
, peer
->ifname
);
5968 int peer_allowas_in_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
5969 int allow_num
, int origin
)
5971 struct peer
*member
;
5972 struct listnode
*node
, *nnode
;
5974 if (!origin
&& (allow_num
< 1 || allow_num
> 10))
5975 return BGP_ERR_INVALID_VALUE
;
5977 /* Set flag and configuration on peer. */
5978 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN
);
5980 if (peer
->allowas_in
[afi
][safi
] != 0
5981 || !CHECK_FLAG(peer
->af_flags
[afi
][safi
],
5982 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
5983 peer_af_flag_set(peer
, afi
, safi
,
5984 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5985 peer
->allowas_in
[afi
][safi
] = 0;
5986 peer_on_policy_change(peer
, afi
, safi
, 0);
5989 if (peer
->allowas_in
[afi
][safi
] != allow_num
5990 || CHECK_FLAG(peer
->af_flags
[afi
][safi
],
5991 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
5993 peer_af_flag_unset(peer
, afi
, safi
,
5994 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
5995 peer
->allowas_in
[afi
][safi
] = allow_num
;
5996 peer_on_policy_change(peer
, afi
, safi
, 0);
6000 /* Skip peer-group mechanics for regular peers. */
6001 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
6005 * Set flag and configuration on all peer-group members, unless
6006 * they are explicitly overriding peer-group configuration.
6008 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6009 /* Skip peers with overridden configuration. */
6010 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
6011 PEER_FLAG_ALLOWAS_IN
))
6014 /* Set flag and configuration on peer-group member. */
6015 SET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_ALLOWAS_IN
);
6017 if (member
->allowas_in
[afi
][safi
] != 0
6018 || !CHECK_FLAG(member
->af_flags
[afi
][safi
],
6019 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
6020 SET_FLAG(member
->af_flags
[afi
][safi
],
6021 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
6022 member
->allowas_in
[afi
][safi
] = 0;
6023 peer_on_policy_change(peer
, afi
, safi
, 0);
6026 if (member
->allowas_in
[afi
][safi
] != allow_num
6027 || CHECK_FLAG(member
->af_flags
[afi
][safi
],
6028 PEER_FLAG_ALLOWAS_IN_ORIGIN
)) {
6029 UNSET_FLAG(member
->af_flags
[afi
][safi
],
6030 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
6031 member
->allowas_in
[afi
][safi
] = allow_num
;
6032 peer_on_policy_change(peer
, afi
, safi
, 0);
6040 int peer_allowas_in_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
6042 struct peer
*member
;
6043 struct listnode
*node
, *nnode
;
6045 /* Skip peer if flag is already disabled. */
6046 if (!CHECK_FLAG(peer
->af_flags
[afi
][safi
], PEER_FLAG_ALLOWAS_IN
))
6049 /* Inherit configuration from peer-group if peer is member. */
6050 if (peer_group_active(peer
)) {
6051 peer_af_flag_inherit(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN
);
6052 peer_af_flag_inherit(peer
, afi
, safi
,
6053 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
6054 PEER_ATTR_INHERIT(peer
, peer
->group
, allowas_in
[afi
][safi
]);
6055 peer_on_policy_change(peer
, afi
, safi
, 0);
6060 /* Remove flag and configuration from peer. */
6061 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN
);
6062 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_ALLOWAS_IN_ORIGIN
);
6063 peer
->allowas_in
[afi
][safi
] = 0;
6064 peer_on_policy_change(peer
, afi
, safi
, 0);
6066 /* Skip peer-group mechanics if handling a regular peer. */
6067 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
))
6071 * Remove flags and configuration from all peer-group members, unless
6072 * they are explicitly overriding peer-group configuration.
6074 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6075 /* Skip peers with overridden configuration. */
6076 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
6077 PEER_FLAG_ALLOWAS_IN
))
6080 /* Remove flags and configuration on peer-group member. */
6081 UNSET_FLAG(member
->af_flags
[afi
][safi
], PEER_FLAG_ALLOWAS_IN
);
6082 UNSET_FLAG(member
->af_flags
[afi
][safi
],
6083 PEER_FLAG_ALLOWAS_IN_ORIGIN
);
6084 member
->allowas_in
[afi
][safi
] = 0;
6085 peer_on_policy_change(member
, afi
, safi
, 0);
6091 int peer_local_as_set(struct peer
*peer
, as_t as
, bool no_prepend
,
6094 bool old_no_prepend
, old_replace_as
;
6095 struct bgp
*bgp
= peer
->bgp
;
6096 struct peer
*member
;
6097 struct listnode
*node
, *nnode
;
6098 enum bgp_peer_sort ptype
= peer_sort(peer
);
6100 if (ptype
!= BGP_PEER_EBGP
&& ptype
!= BGP_PEER_INTERNAL
)
6101 return BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP
;
6104 return BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS
;
6107 return BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS
;
6109 /* Save previous flag states. */
6111 !!CHECK_FLAG(peer
->flags
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
6113 !!CHECK_FLAG(peer
->flags
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
6115 /* Set flag and configuration on peer. */
6116 peer_flag_set(peer
, PEER_FLAG_LOCAL_AS
);
6117 peer_flag_modify(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
, no_prepend
);
6118 peer_flag_modify(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
, replace_as
);
6120 if (peer
->change_local_as
== as
&& old_no_prepend
== no_prepend
6121 && old_replace_as
== replace_as
)
6123 peer
->change_local_as
= as
;
6125 /* Check if handling a regular peer. */
6126 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6127 /* Send notification or reset peer depending on state. */
6128 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
6129 peer
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
6130 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
6131 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6133 bgp_session_reset(peer
);
6135 /* Skip peer-group mechanics for regular peers. */
6140 * Set flag and configuration on all peer-group members, unless they are
6141 * explicitly overriding peer-group configuration.
6143 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6144 /* Skip peers with overridden configuration. */
6145 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_LOCAL_AS
))
6148 /* Skip peers with the same configuration. */
6149 old_no_prepend
= CHECK_FLAG(member
->flags
,
6150 PEER_FLAG_LOCAL_AS_NO_PREPEND
);
6151 old_replace_as
= CHECK_FLAG(member
->flags
,
6152 PEER_FLAG_LOCAL_AS_REPLACE_AS
);
6153 if (member
->change_local_as
== as
6154 && CHECK_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS
)
6155 && old_no_prepend
== no_prepend
6156 && old_replace_as
== replace_as
)
6159 /* Set flag and configuration on peer-group member. */
6160 SET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS
);
6161 COND_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_NO_PREPEND
,
6163 COND_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_REPLACE_AS
,
6165 member
->change_local_as
= as
;
6167 /* Send notification or stop peer depending on state. */
6168 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
6169 member
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
6170 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
6171 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6173 BGP_EVENT_ADD(member
, BGP_Stop
);
6179 int peer_local_as_unset(struct peer
*peer
)
6181 struct peer
*member
;
6182 struct listnode
*node
, *nnode
;
6184 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_LOCAL_AS
))
6187 /* Inherit configuration from peer-group if peer is member. */
6188 if (peer_group_active(peer
)) {
6189 peer_flag_inherit(peer
, PEER_FLAG_LOCAL_AS
);
6190 peer_flag_inherit(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
6191 peer_flag_inherit(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
6192 PEER_ATTR_INHERIT(peer
, peer
->group
, change_local_as
);
6194 /* Otherwise remove flag and configuration from peer. */
6195 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS
);
6196 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
6197 peer_flag_unset(peer
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
6198 peer
->change_local_as
= 0;
6201 /* Check if handling a regular peer. */
6202 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6203 /* Send notification or stop peer depending on state. */
6204 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
)) {
6205 peer
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
6206 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
6207 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6209 BGP_EVENT_ADD(peer
, BGP_Stop
);
6211 /* Skip peer-group mechanics for regular peers. */
6216 * Remove flag and configuration from all peer-group members, unless
6217 * they are explicitly overriding peer-group configuration.
6219 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6220 /* Skip peers with overridden configuration. */
6221 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_LOCAL_AS
))
6224 /* Remove flag and configuration on peer-group member. */
6225 UNSET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS
);
6226 UNSET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_NO_PREPEND
);
6227 UNSET_FLAG(member
->flags
, PEER_FLAG_LOCAL_AS_REPLACE_AS
);
6228 member
->change_local_as
= 0;
6230 /* Send notification or stop peer depending on state. */
6231 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
)) {
6232 member
->last_reset
= PEER_DOWN_LOCAL_AS_CHANGE
;
6233 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
6234 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6236 bgp_session_reset(member
);
6242 /* Set password for authenticating with the peer. */
6243 int peer_password_set(struct peer
*peer
, const char *password
)
6245 struct peer
*member
;
6246 struct listnode
*node
, *nnode
;
6247 int len
= password
? strlen(password
) : 0;
6248 int ret
= BGP_SUCCESS
;
6250 if ((len
< PEER_PASSWORD_MINLEN
) || (len
> PEER_PASSWORD_MAXLEN
))
6251 return BGP_ERR_INVALID_VALUE
;
6253 /* Set flag and configuration on peer. */
6254 peer_flag_set(peer
, PEER_FLAG_PASSWORD
);
6255 if (peer
->password
&& strcmp(peer
->password
, password
) == 0)
6257 XFREE(MTYPE_PEER_PASSWORD
, peer
->password
);
6258 peer
->password
= XSTRDUP(MTYPE_PEER_PASSWORD
, password
);
6260 /* Check if handling a regular peer. */
6261 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6262 /* Send notification or reset peer depending on state. */
6263 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
6264 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
6265 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6267 bgp_session_reset(peer
);
6270 * Attempt to install password on socket and skip peer-group
6273 if (BGP_PEER_SU_UNSPEC(peer
))
6275 return (bgp_md5_set(peer
) >= 0) ? BGP_SUCCESS
6276 : BGP_ERR_TCPSIG_FAILED
;
6280 * Set flag and configuration on all peer-group members, unless they are
6281 * explicitly overriding peer-group configuration.
6283 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6284 /* Skip peers with overridden configuration. */
6285 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_PASSWORD
))
6288 /* Skip peers with the same password. */
6289 if (member
->password
&& strcmp(member
->password
, password
) == 0)
6292 /* Set flag and configuration on peer-group member. */
6293 SET_FLAG(member
->flags
, PEER_FLAG_PASSWORD
);
6294 if (member
->password
)
6295 XFREE(MTYPE_PEER_PASSWORD
, member
->password
);
6296 member
->password
= XSTRDUP(MTYPE_PEER_PASSWORD
, password
);
6298 /* Send notification or reset peer depending on state. */
6299 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
))
6300 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
6301 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6303 bgp_session_reset(member
);
6305 /* Attempt to install password on socket. */
6306 if (!BGP_PEER_SU_UNSPEC(member
) && bgp_md5_set(member
) < 0)
6307 ret
= BGP_ERR_TCPSIG_FAILED
;
6310 /* Set flag and configuration on all peer-group listen ranges */
6311 struct listnode
*ln
;
6314 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP
], ln
, lr
))
6315 bgp_md5_set_prefix(peer
->bgp
, lr
, password
);
6316 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP6
], ln
, lr
))
6317 bgp_md5_set_prefix(peer
->bgp
, lr
, password
);
6322 int peer_password_unset(struct peer
*peer
)
6324 struct peer
*member
;
6325 struct listnode
*node
, *nnode
;
6327 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_PASSWORD
))
6330 /* Inherit configuration from peer-group if peer is member. */
6331 if (peer_group_active(peer
)) {
6332 peer_flag_inherit(peer
, PEER_FLAG_PASSWORD
);
6333 PEER_STR_ATTR_INHERIT(peer
, peer
->group
, password
,
6334 MTYPE_PEER_PASSWORD
);
6336 /* Otherwise remove flag and configuration from peer. */
6337 peer_flag_unset(peer
, PEER_FLAG_PASSWORD
);
6338 XFREE(MTYPE_PEER_PASSWORD
, peer
->password
);
6341 /* Check if handling a regular peer. */
6342 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6343 /* Send notification or reset peer depending on state. */
6344 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
6345 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
6346 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6348 bgp_session_reset(peer
);
6350 /* Attempt to uninstall password on socket. */
6351 if (!BGP_PEER_SU_UNSPEC(peer
))
6352 bgp_md5_unset(peer
);
6353 /* Skip peer-group mechanics for regular peers. */
6358 * Remove flag and configuration from all peer-group members, unless
6359 * they are explicitly overriding peer-group configuration.
6361 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6362 /* Skip peers with overridden configuration. */
6363 if (CHECK_FLAG(member
->flags_override
, PEER_FLAG_PASSWORD
))
6366 /* Remove flag and configuration on peer-group member. */
6367 UNSET_FLAG(member
->flags
, PEER_FLAG_PASSWORD
);
6368 XFREE(MTYPE_PEER_PASSWORD
, member
->password
);
6370 /* Send notification or reset peer depending on state. */
6371 if (BGP_IS_VALID_STATE_FOR_NOTIF(member
->status
))
6372 bgp_notify_send(member
, BGP_NOTIFY_CEASE
,
6373 BGP_NOTIFY_CEASE_CONFIG_CHANGE
);
6375 bgp_session_reset(member
);
6377 /* Attempt to uninstall password on socket. */
6378 if (!BGP_PEER_SU_UNSPEC(member
))
6379 bgp_md5_unset(member
);
6382 /* Set flag and configuration on all peer-group listen ranges */
6383 struct listnode
*ln
;
6386 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP
], ln
, lr
))
6387 bgp_md5_unset_prefix(peer
->bgp
, lr
);
6388 for (ALL_LIST_ELEMENTS_RO(peer
->group
->listen_range
[AFI_IP6
], ln
, lr
))
6389 bgp_md5_unset_prefix(peer
->bgp
, lr
);
6395 /* Set distribute list to the peer. */
6396 int peer_distribute_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
6399 struct peer
*member
;
6400 struct bgp_filter
*filter
;
6401 struct listnode
*node
, *nnode
;
6403 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6404 return BGP_ERR_INVALID_VALUE
;
6406 /* Set configuration on peer. */
6407 filter
= &peer
->filter
[afi
][safi
];
6408 if (filter
->plist
[direct
].name
)
6409 return BGP_ERR_PEER_FILTER_CONFLICT
;
6410 if (filter
->dlist
[direct
].name
)
6411 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->dlist
[direct
].name
);
6412 filter
->dlist
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6413 filter
->dlist
[direct
].alist
= access_list_lookup(afi
, name
);
6415 /* Check if handling a regular peer. */
6416 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6417 /* Set override-flag and process peer route updates. */
6418 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6419 PEER_FT_DISTRIBUTE_LIST
);
6420 peer_on_policy_change(peer
, afi
, safi
,
6421 (direct
== FILTER_OUT
) ? 1 : 0);
6423 /* Skip peer-group mechanics for regular peers. */
6428 * Set configuration on all peer-group members, un less they are
6429 * explicitly overriding peer-group configuration.
6431 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6432 /* Skip peers with overridden configuration. */
6433 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6434 PEER_FT_DISTRIBUTE_LIST
))
6437 /* Set configuration on peer-group member. */
6438 filter
= &member
->filter
[afi
][safi
];
6439 if (filter
->dlist
[direct
].name
)
6440 XFREE(MTYPE_BGP_FILTER_NAME
,
6441 filter
->dlist
[direct
].name
);
6442 filter
->dlist
[direct
].name
=
6443 XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6444 filter
->dlist
[direct
].alist
= access_list_lookup(afi
, name
);
6446 /* Process peer route updates. */
6447 peer_on_policy_change(member
, afi
, safi
,
6448 (direct
== FILTER_OUT
) ? 1 : 0);
6454 int peer_distribute_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
)
6456 struct peer
*member
;
6457 struct bgp_filter
*filter
;
6458 struct listnode
*node
, *nnode
;
6460 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6461 return BGP_ERR_INVALID_VALUE
;
6463 /* Unset override-flag unconditionally. */
6464 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6465 PEER_FT_DISTRIBUTE_LIST
);
6467 /* Inherit configuration from peer-group if peer is member. */
6468 if (peer_group_active(peer
)) {
6469 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
6470 filter
[afi
][safi
].dlist
[direct
].name
,
6471 MTYPE_BGP_FILTER_NAME
);
6472 PEER_ATTR_INHERIT(peer
, peer
->group
,
6473 filter
[afi
][safi
].dlist
[direct
].alist
);
6475 /* Otherwise remove configuration from peer. */
6476 filter
= &peer
->filter
[afi
][safi
];
6477 if (filter
->dlist
[direct
].name
)
6478 XFREE(MTYPE_BGP_FILTER_NAME
,
6479 filter
->dlist
[direct
].name
);
6480 filter
->dlist
[direct
].name
= NULL
;
6481 filter
->dlist
[direct
].alist
= NULL
;
6484 /* Check if handling a regular peer. */
6485 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6486 /* Process peer route updates. */
6487 peer_on_policy_change(peer
, afi
, safi
,
6488 (direct
== FILTER_OUT
) ? 1 : 0);
6490 /* Skip peer-group mechanics for regular peers. */
6495 * Remove configuration on all peer-group members, unless they are
6496 * explicitly overriding peer-group configuration.
6498 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6499 /* Skip peers with overridden configuration. */
6500 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6501 PEER_FT_DISTRIBUTE_LIST
))
6504 /* Remove configuration on peer-group member. */
6505 filter
= &member
->filter
[afi
][safi
];
6506 if (filter
->dlist
[direct
].name
)
6507 XFREE(MTYPE_BGP_FILTER_NAME
,
6508 filter
->dlist
[direct
].name
);
6509 filter
->dlist
[direct
].name
= NULL
;
6510 filter
->dlist
[direct
].alist
= NULL
;
6512 /* Process peer route updates. */
6513 peer_on_policy_change(member
, afi
, safi
,
6514 (direct
== FILTER_OUT
) ? 1 : 0);
6520 /* Update distribute list. */
6521 static void peer_distribute_update(struct access_list
*access
)
6526 struct listnode
*mnode
, *mnnode
;
6527 struct listnode
*node
, *nnode
;
6530 struct peer_group
*group
;
6531 struct bgp_filter
*filter
;
6533 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
6535 update_group_policy_update(bgp
,
6536 BGP_POLICY_DISTRIBUTE_LIST
,
6537 access
->name
, true, 0);
6538 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
6539 FOREACH_AFI_SAFI (afi
, safi
) {
6540 filter
= &peer
->filter
[afi
][safi
];
6542 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6544 if (filter
->dlist
[direct
].name
)
6545 filter
->dlist
[direct
]
6546 .alist
= access_list_lookup(
6548 filter
->dlist
[direct
]
6551 filter
->dlist
[direct
].alist
=
6556 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
6557 FOREACH_AFI_SAFI (afi
, safi
) {
6558 filter
= &group
->conf
->filter
[afi
][safi
];
6560 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6562 if (filter
->dlist
[direct
].name
)
6563 filter
->dlist
[direct
]
6564 .alist
= access_list_lookup(
6566 filter
->dlist
[direct
]
6569 filter
->dlist
[direct
].alist
=
6574 #ifdef ENABLE_BGP_VNC
6575 vnc_prefix_list_update(bgp
);
6580 /* Set prefix list to the peer. */
6581 int peer_prefix_list_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
6584 struct peer
*member
;
6585 struct bgp_filter
*filter
;
6586 struct listnode
*node
, *nnode
;
6588 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6589 return BGP_ERR_INVALID_VALUE
;
6591 /* Set configuration on peer. */
6592 filter
= &peer
->filter
[afi
][safi
];
6593 if (filter
->dlist
[direct
].name
)
6594 return BGP_ERR_PEER_FILTER_CONFLICT
;
6595 if (filter
->plist
[direct
].name
)
6596 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->plist
[direct
].name
);
6597 filter
->plist
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6598 filter
->plist
[direct
].plist
= prefix_list_lookup(afi
, name
);
6600 /* Check if handling a regular peer. */
6601 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6602 /* Set override-flag and process peer route updates. */
6603 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6604 PEER_FT_PREFIX_LIST
);
6605 peer_on_policy_change(peer
, afi
, safi
,
6606 (direct
== FILTER_OUT
) ? 1 : 0);
6608 /* Skip peer-group mechanics for regular peers. */
6613 * Set configuration on all peer-group members, unless they are
6614 * explicitly overriding peer-group configuration.
6616 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6617 /* Skip peers with overridden configuration. */
6618 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6619 PEER_FT_PREFIX_LIST
))
6622 /* Set configuration on peer-group member. */
6623 filter
= &member
->filter
[afi
][safi
];
6624 if (filter
->plist
[direct
].name
)
6625 XFREE(MTYPE_BGP_FILTER_NAME
,
6626 filter
->plist
[direct
].name
);
6627 filter
->plist
[direct
].name
=
6628 XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6629 filter
->plist
[direct
].plist
= prefix_list_lookup(afi
, name
);
6631 /* Process peer route updates. */
6632 peer_on_policy_change(member
, afi
, safi
,
6633 (direct
== FILTER_OUT
) ? 1 : 0);
6639 int peer_prefix_list_unset(struct peer
*peer
, afi_t afi
, safi_t safi
,
6642 struct peer
*member
;
6643 struct bgp_filter
*filter
;
6644 struct listnode
*node
, *nnode
;
6646 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6647 return BGP_ERR_INVALID_VALUE
;
6649 /* Unset override-flag unconditionally. */
6650 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6651 PEER_FT_PREFIX_LIST
);
6653 /* Inherit configuration from peer-group if peer is member. */
6654 if (peer_group_active(peer
)) {
6655 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
6656 filter
[afi
][safi
].plist
[direct
].name
,
6657 MTYPE_BGP_FILTER_NAME
);
6658 PEER_ATTR_INHERIT(peer
, peer
->group
,
6659 filter
[afi
][safi
].plist
[direct
].plist
);
6661 /* Otherwise remove configuration from peer. */
6662 filter
= &peer
->filter
[afi
][safi
];
6663 if (filter
->plist
[direct
].name
)
6664 XFREE(MTYPE_BGP_FILTER_NAME
,
6665 filter
->plist
[direct
].name
);
6666 filter
->plist
[direct
].name
= NULL
;
6667 filter
->plist
[direct
].plist
= NULL
;
6670 /* Check if handling a regular peer. */
6671 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6672 /* Process peer route updates. */
6673 peer_on_policy_change(peer
, afi
, safi
,
6674 (direct
== FILTER_OUT
) ? 1 : 0);
6676 /* Skip peer-group mechanics for regular peers. */
6681 * Remove configuration on all peer-group members, unless they are
6682 * explicitly overriding peer-group configuration.
6684 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6685 /* Skip peers with overridden configuration. */
6686 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6687 PEER_FT_PREFIX_LIST
))
6690 /* Remove configuration on peer-group member. */
6691 filter
= &member
->filter
[afi
][safi
];
6692 if (filter
->plist
[direct
].name
)
6693 XFREE(MTYPE_BGP_FILTER_NAME
,
6694 filter
->plist
[direct
].name
);
6695 filter
->plist
[direct
].name
= NULL
;
6696 filter
->plist
[direct
].plist
= NULL
;
6698 /* Process peer route updates. */
6699 peer_on_policy_change(member
, afi
, safi
,
6700 (direct
== FILTER_OUT
) ? 1 : 0);
6706 /* Update prefix-list list. */
6707 static void peer_prefix_list_update(struct prefix_list
*plist
)
6709 struct listnode
*mnode
, *mnnode
;
6710 struct listnode
*node
, *nnode
;
6713 struct peer_group
*group
;
6714 struct bgp_filter
*filter
;
6719 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
6722 * Update the prefix-list on update groups.
6724 update_group_policy_update(
6725 bgp
, BGP_POLICY_PREFIX_LIST
,
6726 plist
? prefix_list_name(plist
) : NULL
, true, 0);
6728 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
6729 FOREACH_AFI_SAFI (afi
, safi
) {
6730 filter
= &peer
->filter
[afi
][safi
];
6732 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6734 if (filter
->plist
[direct
].name
)
6735 filter
->plist
[direct
]
6736 .plist
= prefix_list_lookup(
6738 filter
->plist
[direct
]
6741 filter
->plist
[direct
].plist
=
6745 /* If we touch prefix-list, we need to process
6746 * new updates. This is important for ORF to
6747 * work correctly as well.
6749 if (peer
->afc_nego
[afi
][safi
])
6750 peer_on_policy_change(peer
, afi
, safi
,
6754 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
6755 FOREACH_AFI_SAFI (afi
, safi
) {
6756 filter
= &group
->conf
->filter
[afi
][safi
];
6758 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6760 if (filter
->plist
[direct
].name
)
6761 filter
->plist
[direct
]
6762 .plist
= prefix_list_lookup(
6764 filter
->plist
[direct
]
6767 filter
->plist
[direct
].plist
=
6775 int peer_aslist_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
6778 struct peer
*member
;
6779 struct bgp_filter
*filter
;
6780 struct listnode
*node
, *nnode
;
6782 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6783 return BGP_ERR_INVALID_VALUE
;
6785 /* Set configuration on peer. */
6786 filter
= &peer
->filter
[afi
][safi
];
6787 if (filter
->aslist
[direct
].name
)
6788 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->aslist
[direct
].name
);
6789 filter
->aslist
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6790 filter
->aslist
[direct
].aslist
= as_list_lookup(name
);
6792 /* Check if handling a regular peer. */
6793 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6794 /* Set override-flag and process peer route updates. */
6795 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6796 PEER_FT_FILTER_LIST
);
6797 peer_on_policy_change(peer
, afi
, safi
,
6798 (direct
== FILTER_OUT
) ? 1 : 0);
6800 /* Skip peer-group mechanics for regular peers. */
6805 * Set configuration on all peer-group members, unless they are
6806 * explicitly overriding peer-group configuration.
6808 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6809 /* Skip peers with overridden configuration. */
6810 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6811 PEER_FT_FILTER_LIST
))
6814 /* Set configuration on peer-group member. */
6815 filter
= &member
->filter
[afi
][safi
];
6816 if (filter
->aslist
[direct
].name
)
6817 XFREE(MTYPE_BGP_FILTER_NAME
,
6818 filter
->aslist
[direct
].name
);
6819 filter
->aslist
[direct
].name
=
6820 XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6821 filter
->aslist
[direct
].aslist
= as_list_lookup(name
);
6823 /* Process peer route updates. */
6824 peer_on_policy_change(member
, afi
, safi
,
6825 (direct
== FILTER_OUT
) ? 1 : 0);
6831 int peer_aslist_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
)
6833 struct peer
*member
;
6834 struct bgp_filter
*filter
;
6835 struct listnode
*node
, *nnode
;
6837 if (direct
!= FILTER_IN
&& direct
!= FILTER_OUT
)
6838 return BGP_ERR_INVALID_VALUE
;
6840 /* Unset override-flag unconditionally. */
6841 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6842 PEER_FT_FILTER_LIST
);
6844 /* Inherit configuration from peer-group if peer is member. */
6845 if (peer_group_active(peer
)) {
6846 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
6847 filter
[afi
][safi
].aslist
[direct
].name
,
6848 MTYPE_BGP_FILTER_NAME
);
6849 PEER_ATTR_INHERIT(peer
, peer
->group
,
6850 filter
[afi
][safi
].aslist
[direct
].aslist
);
6852 /* Otherwise remove configuration from peer. */
6853 filter
= &peer
->filter
[afi
][safi
];
6854 if (filter
->aslist
[direct
].name
)
6855 XFREE(MTYPE_BGP_FILTER_NAME
,
6856 filter
->aslist
[direct
].name
);
6857 filter
->aslist
[direct
].name
= NULL
;
6858 filter
->aslist
[direct
].aslist
= NULL
;
6861 /* Check if handling a regular peer. */
6862 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6863 /* Process peer route updates. */
6864 peer_on_policy_change(peer
, afi
, safi
,
6865 (direct
== FILTER_OUT
) ? 1 : 0);
6867 /* Skip peer-group mechanics for regular peers. */
6872 * Remove configuration on all peer-group members, unless they are
6873 * explicitly overriding peer-group configuration.
6875 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
6876 /* Skip peers with overridden configuration. */
6877 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
6878 PEER_FT_FILTER_LIST
))
6881 /* Remove configuration on peer-group member. */
6882 filter
= &member
->filter
[afi
][safi
];
6883 if (filter
->aslist
[direct
].name
)
6884 XFREE(MTYPE_BGP_FILTER_NAME
,
6885 filter
->aslist
[direct
].name
);
6886 filter
->aslist
[direct
].name
= NULL
;
6887 filter
->aslist
[direct
].aslist
= NULL
;
6889 /* Process peer route updates. */
6890 peer_on_policy_change(member
, afi
, safi
,
6891 (direct
== FILTER_OUT
) ? 1 : 0);
6897 static void peer_aslist_update(const char *aslist_name
)
6902 struct listnode
*mnode
, *mnnode
;
6903 struct listnode
*node
, *nnode
;
6906 struct peer_group
*group
;
6907 struct bgp_filter
*filter
;
6909 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
6910 update_group_policy_update(bgp
, BGP_POLICY_FILTER_LIST
,
6911 aslist_name
, true, 0);
6913 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
6914 FOREACH_AFI_SAFI (afi
, safi
) {
6915 filter
= &peer
->filter
[afi
][safi
];
6917 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6919 if (filter
->aslist
[direct
].name
)
6920 filter
->aslist
[direct
]
6921 .aslist
= as_list_lookup(
6922 filter
->aslist
[direct
]
6925 filter
->aslist
[direct
].aslist
=
6930 for (ALL_LIST_ELEMENTS(bgp
->group
, node
, nnode
, group
)) {
6931 FOREACH_AFI_SAFI (afi
, safi
) {
6932 filter
= &group
->conf
->filter
[afi
][safi
];
6934 for (direct
= FILTER_IN
; direct
< FILTER_MAX
;
6936 if (filter
->aslist
[direct
].name
)
6937 filter
->aslist
[direct
]
6938 .aslist
= as_list_lookup(
6939 filter
->aslist
[direct
]
6942 filter
->aslist
[direct
].aslist
=
6950 static void peer_aslist_add(char *aslist_name
)
6952 peer_aslist_update(aslist_name
);
6953 route_map_notify_dependencies(aslist_name
, RMAP_EVENT_ASLIST_ADDED
);
6956 static void peer_aslist_del(const char *aslist_name
)
6958 peer_aslist_update(aslist_name
);
6959 route_map_notify_dependencies(aslist_name
, RMAP_EVENT_ASLIST_DELETED
);
6963 int peer_route_map_set(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
,
6964 const char *name
, struct route_map
*route_map
)
6966 struct peer
*member
;
6967 struct bgp_filter
*filter
;
6968 struct listnode
*node
, *nnode
;
6970 if (direct
!= RMAP_IN
&& direct
!= RMAP_OUT
)
6971 return BGP_ERR_INVALID_VALUE
;
6973 /* Set configuration on peer. */
6974 filter
= &peer
->filter
[afi
][safi
];
6975 if (filter
->map
[direct
].name
) {
6976 /* If the neighbor is configured with the same route-map
6977 * again then, ignore the duplicate configuration.
6979 if (strcmp(filter
->map
[direct
].name
, name
) == 0)
6982 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
6984 route_map_counter_decrement(filter
->map
[direct
].map
);
6985 filter
->map
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
6986 filter
->map
[direct
].map
= route_map
;
6987 route_map_counter_increment(route_map
);
6989 /* Check if handling a regular peer. */
6990 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
6991 /* Set override-flag and process peer route updates. */
6992 SET_FLAG(peer
->filter_override
[afi
][safi
][direct
],
6994 peer_on_policy_change(peer
, afi
, safi
,
6995 (direct
== RMAP_OUT
) ? 1 : 0);
6997 /* Skip peer-group mechanics for regular peers. */
7002 * Set configuration on all peer-group members, unless they are
7003 * explicitly overriding peer-group configuration.
7005 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7006 /* Skip peers with overridden configuration. */
7007 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
7011 /* Set configuration on peer-group member. */
7012 filter
= &member
->filter
[afi
][safi
];
7013 if (filter
->map
[direct
].name
)
7014 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
7015 route_map_counter_decrement(filter
->map
[direct
].map
);
7016 filter
->map
[direct
].name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
7017 filter
->map
[direct
].map
= route_map
;
7018 route_map_counter_increment(route_map
);
7020 /* Process peer route updates. */
7021 peer_on_policy_change(member
, afi
, safi
,
7022 (direct
== RMAP_OUT
) ? 1 : 0);
7027 /* Unset route-map from the peer. */
7028 int peer_route_map_unset(struct peer
*peer
, afi_t afi
, safi_t safi
, int direct
)
7030 struct peer
*member
;
7031 struct bgp_filter
*filter
;
7032 struct listnode
*node
, *nnode
;
7034 if (direct
!= RMAP_IN
&& direct
!= RMAP_OUT
)
7035 return BGP_ERR_INVALID_VALUE
;
7037 /* Unset override-flag unconditionally. */
7038 UNSET_FLAG(peer
->filter_override
[afi
][safi
][direct
], PEER_FT_ROUTE_MAP
);
7040 /* Inherit configuration from peer-group if peer is member. */
7041 if (peer_group_active(peer
)) {
7042 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
7043 filter
[afi
][safi
].map
[direct
].name
,
7044 MTYPE_BGP_FILTER_NAME
);
7045 PEER_ATTR_INHERIT(peer
, peer
->group
,
7046 filter
[afi
][safi
].map
[direct
].map
);
7048 /* Otherwise remove configuration from peer. */
7049 filter
= &peer
->filter
[afi
][safi
];
7050 if (filter
->map
[direct
].name
)
7051 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
7052 route_map_counter_decrement(filter
->map
[direct
].map
);
7053 filter
->map
[direct
].name
= NULL
;
7054 filter
->map
[direct
].map
= NULL
;
7057 /* Check if handling a regular peer. */
7058 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7059 /* Process peer route updates. */
7060 peer_on_policy_change(peer
, afi
, safi
,
7061 (direct
== RMAP_OUT
) ? 1 : 0);
7063 /* Skip peer-group mechanics for regular peers. */
7068 * Remove configuration on all peer-group members, unless they are
7069 * explicitly overriding peer-group configuration.
7071 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7072 /* Skip peers with overridden configuration. */
7073 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][direct
],
7077 /* Remove configuration on peer-group member. */
7078 filter
= &member
->filter
[afi
][safi
];
7079 if (filter
->map
[direct
].name
)
7080 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->map
[direct
].name
);
7081 route_map_counter_decrement(filter
->map
[direct
].map
);
7082 filter
->map
[direct
].name
= NULL
;
7083 filter
->map
[direct
].map
= NULL
;
7085 /* Process peer route updates. */
7086 peer_on_policy_change(member
, afi
, safi
,
7087 (direct
== RMAP_OUT
) ? 1 : 0);
7093 /* Set unsuppress-map to the peer. */
7094 int peer_unsuppress_map_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
7095 const char *name
, struct route_map
*route_map
)
7097 struct peer
*member
;
7098 struct bgp_filter
*filter
;
7099 struct listnode
*node
, *nnode
;
7101 /* Set configuration on peer. */
7102 filter
= &peer
->filter
[afi
][safi
];
7103 if (filter
->usmap
.name
)
7104 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
7105 route_map_counter_decrement(filter
->usmap
.map
);
7106 filter
->usmap
.name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
7107 filter
->usmap
.map
= route_map
;
7108 route_map_counter_increment(route_map
);
7110 /* Check if handling a regular peer. */
7111 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7112 /* Set override-flag and process peer route updates. */
7113 SET_FLAG(peer
->filter_override
[afi
][safi
][0],
7114 PEER_FT_UNSUPPRESS_MAP
);
7115 peer_on_policy_change(peer
, afi
, safi
, 1);
7117 /* Skip peer-group mechanics for regular peers. */
7122 * Set configuration on all peer-group members, unless they are
7123 * explicitly overriding peer-group configuration.
7125 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7126 /* Skip peers with overridden configuration. */
7127 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][0],
7128 PEER_FT_UNSUPPRESS_MAP
))
7131 /* Set configuration on peer-group member. */
7132 filter
= &member
->filter
[afi
][safi
];
7133 if (filter
->usmap
.name
)
7134 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
7135 route_map_counter_decrement(filter
->usmap
.map
);
7136 filter
->usmap
.name
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, name
);
7137 filter
->usmap
.map
= route_map
;
7138 route_map_counter_increment(route_map
);
7140 /* Process peer route updates. */
7141 peer_on_policy_change(member
, afi
, safi
, 1);
7147 /* Unset route-map from the peer. */
7148 int peer_unsuppress_map_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
7150 struct peer
*member
;
7151 struct bgp_filter
*filter
;
7152 struct listnode
*node
, *nnode
;
7154 /* Unset override-flag unconditionally. */
7155 UNSET_FLAG(peer
->filter_override
[afi
][safi
][0], PEER_FT_UNSUPPRESS_MAP
);
7157 /* Inherit configuration from peer-group if peer is member. */
7158 if (peer_group_active(peer
)) {
7159 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
7160 filter
[afi
][safi
].usmap
.name
,
7161 MTYPE_BGP_FILTER_NAME
);
7162 PEER_ATTR_INHERIT(peer
, peer
->group
,
7163 filter
[afi
][safi
].usmap
.map
);
7165 /* Otherwise remove configuration from peer. */
7166 filter
= &peer
->filter
[afi
][safi
];
7167 if (filter
->usmap
.name
)
7168 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
7169 route_map_counter_decrement(filter
->usmap
.map
);
7170 filter
->usmap
.name
= NULL
;
7171 filter
->usmap
.map
= NULL
;
7174 /* Check if handling a regular peer. */
7175 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7176 /* Process peer route updates. */
7177 peer_on_policy_change(peer
, afi
, safi
, 1);
7179 /* Skip peer-group mechanics for regular peers. */
7184 * Remove configuration on all peer-group members, unless they are
7185 * explicitly overriding peer-group configuration.
7187 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7188 /* Skip peers with overridden configuration. */
7189 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][0],
7190 PEER_FT_UNSUPPRESS_MAP
))
7193 /* Remove configuration on peer-group member. */
7194 filter
= &member
->filter
[afi
][safi
];
7195 if (filter
->usmap
.name
)
7196 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->usmap
.name
);
7197 route_map_counter_decrement(filter
->usmap
.map
);
7198 filter
->usmap
.name
= NULL
;
7199 filter
->usmap
.map
= NULL
;
7201 /* Process peer route updates. */
7202 peer_on_policy_change(member
, afi
, safi
, 1);
7208 static void peer_advertise_map_filter_update(struct peer
*peer
, afi_t afi
,
7209 safi_t safi
, const char *amap_name
,
7210 struct route_map
*amap
,
7211 const char *cmap_name
,
7212 struct route_map
*cmap
,
7213 bool condition
, bool set
)
7215 struct bgp_filter
*filter
;
7216 bool filter_exists
= false;
7218 filter
= &peer
->filter
[afi
][safi
];
7220 /* advertise-map is already configured. */
7221 if (filter
->advmap
.aname
) {
7222 filter_exists
= true;
7223 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->advmap
.aname
);
7224 XFREE(MTYPE_BGP_FILTER_NAME
, filter
->advmap
.cname
);
7227 route_map_counter_decrement(filter
->advmap
.amap
);
7229 /* Removed advertise-map configuration */
7231 memset(&filter
->advmap
, 0, sizeof(filter
->advmap
));
7233 /* decrement condition_filter_count delete timer if
7234 * this is the last advertise-map to be removed.
7237 bgp_conditional_adv_disable(peer
, afi
, safi
);
7242 /* Update filter data with newly configured values. */
7243 filter
->advmap
.aname
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, amap_name
);
7244 filter
->advmap
.cname
= XSTRDUP(MTYPE_BGP_FILTER_NAME
, cmap_name
);
7245 filter
->advmap
.amap
= amap
;
7246 filter
->advmap
.cmap
= cmap
;
7247 filter
->advmap
.condition
= condition
;
7248 route_map_counter_increment(filter
->advmap
.amap
);
7249 peer
->advmap_config_change
[afi
][safi
] = true;
7251 /* Increment condition_filter_count and/or create timer. */
7252 if (!filter_exists
) {
7253 filter
->advmap
.update_type
= UPDATE_TYPE_ADVERTISE
;
7254 bgp_conditional_adv_enable(peer
, afi
, safi
);
7257 /* Process peer route updates. */
7258 peer_on_policy_change(peer
, afi
, safi
, 1);
7261 /* Set advertise-map to the peer. */
7262 int peer_advertise_map_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
7263 const char *advertise_name
,
7264 struct route_map
*advertise_map
,
7265 const char *condition_name
,
7266 struct route_map
*condition_map
, bool condition
)
7268 struct peer
*member
;
7269 struct listnode
*node
, *nnode
;
7271 /* Set configuration on peer. */
7272 peer_advertise_map_filter_update(peer
, afi
, safi
, advertise_name
,
7273 advertise_map
, condition_name
,
7274 condition_map
, condition
, true);
7276 /* Check if handling a regular peer & Skip peer-group mechanics. */
7277 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7278 /* Set override-flag and process peer route updates. */
7279 SET_FLAG(peer
->filter_override
[afi
][safi
][RMAP_OUT
],
7280 PEER_FT_ADVERTISE_MAP
);
7285 * Set configuration on all peer-group members, unless they are
7286 * explicitly overriding peer-group configuration.
7288 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7289 /* Skip peers with overridden configuration. */
7290 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][RMAP_OUT
],
7291 PEER_FT_ADVERTISE_MAP
))
7294 /* Set configuration on peer-group member. */
7295 peer_advertise_map_filter_update(
7296 member
, afi
, safi
, advertise_name
, advertise_map
,
7297 condition_name
, condition_map
, condition
, true);
7303 /* Unset advertise-map from the peer. */
7304 int peer_advertise_map_unset(struct peer
*peer
, afi_t afi
, safi_t safi
,
7305 const char *advertise_name
,
7306 struct route_map
*advertise_map
,
7307 const char *condition_name
,
7308 struct route_map
*condition_map
, bool condition
)
7310 struct peer
*member
;
7311 struct listnode
*node
, *nnode
;
7313 /* advertise-map is not configured */
7314 if (!peer
->filter
[afi
][safi
].advmap
.aname
)
7317 /* Unset override-flag unconditionally. */
7318 UNSET_FLAG(peer
->filter_override
[afi
][safi
][RMAP_OUT
],
7319 PEER_FT_ADVERTISE_MAP
);
7321 /* Inherit configuration from peer-group if peer is member. */
7322 if (peer_group_active(peer
)) {
7323 PEER_STR_ATTR_INHERIT(peer
, peer
->group
,
7324 filter
[afi
][safi
].advmap
.aname
,
7325 MTYPE_BGP_FILTER_NAME
);
7326 PEER_ATTR_INHERIT(peer
, peer
->group
,
7327 filter
[afi
][safi
].advmap
.amap
);
7329 peer_advertise_map_filter_update(
7330 peer
, afi
, safi
, advertise_name
, advertise_map
,
7331 condition_name
, condition_map
, condition
, false);
7333 /* Check if handling a regular peer and skip peer-group mechanics. */
7334 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7335 /* Process peer route updates. */
7336 if (BGP_DEBUG(update
, UPDATE_OUT
))
7337 zlog_debug("%s: Send normal update to %s for %s",
7338 __func__
, peer
->host
,
7339 get_afi_safi_str(afi
, safi
, false));
7345 * Remove configuration on all peer-group members, unless they are
7346 * explicitly overriding peer-group configuration.
7348 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7349 /* Skip peers with overridden configuration. */
7350 if (CHECK_FLAG(member
->filter_override
[afi
][safi
][RMAP_OUT
],
7351 PEER_FT_ADVERTISE_MAP
))
7353 /* Remove configuration on peer-group member. */
7354 peer_advertise_map_filter_update(
7355 member
, afi
, safi
, advertise_name
, advertise_map
,
7356 condition_name
, condition_map
, condition
, false);
7358 /* Process peer route updates. */
7359 if (BGP_DEBUG(update
, UPDATE_OUT
))
7360 zlog_debug("%s: Send normal update to %s for %s ",
7361 __func__
, member
->host
,
7362 get_afi_safi_str(afi
, safi
, false));
7368 static bool peer_maximum_prefix_clear_overflow(struct peer
*peer
)
7370 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_PREFIX_OVERFLOW
))
7373 UNSET_FLAG(peer
->sflags
, PEER_STATUS_PREFIX_OVERFLOW
);
7374 if (peer
->t_pmax_restart
) {
7375 THREAD_OFF(peer
->t_pmax_restart
);
7376 if (bgp_debug_neighbor_events(peer
))
7378 "%pBP Maximum-prefix restart timer cancelled",
7381 BGP_EVENT_ADD(peer
, BGP_Start
);
7385 int peer_maximum_prefix_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
7386 uint32_t max
, uint8_t threshold
, int warning
,
7387 uint16_t restart
, bool force
)
7389 struct peer
*member
;
7390 struct listnode
*node
, *nnode
;
7392 /* Set flags and configuration on peer. */
7393 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX
);
7396 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_FORCE
);
7398 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_FORCE
);
7401 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_WARNING
);
7403 peer_af_flag_unset(peer
, afi
, safi
,
7404 PEER_FLAG_MAX_PREFIX_WARNING
);
7406 peer
->pmax
[afi
][safi
] = max
;
7407 peer
->pmax_threshold
[afi
][safi
] = threshold
;
7408 peer
->pmax_restart
[afi
][safi
] = restart
;
7410 /* Check if handling a regular peer. */
7411 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7412 /* Re-check if peer violates maximum-prefix. */
7413 if ((peer_established(peer
)) && (peer
->afc
[afi
][safi
]))
7414 bgp_maximum_prefix_overflow(peer
, afi
, safi
, 1);
7416 /* Skip peer-group mechanics for regular peers. */
7421 * Set flags and configuration on all peer-group members, unless they
7422 * are explicitly overriding peer-group configuration.
7424 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7425 /* Skip peers with overridden configuration. */
7426 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
7427 PEER_FLAG_MAX_PREFIX
))
7430 /* Set flag and configuration on peer-group member. */
7431 member
->pmax
[afi
][safi
] = max
;
7432 member
->pmax_threshold
[afi
][safi
] = threshold
;
7433 member
->pmax_restart
[afi
][safi
] = restart
;
7436 SET_FLAG(member
->af_flags
[afi
][safi
],
7437 PEER_FLAG_MAX_PREFIX_FORCE
);
7439 UNSET_FLAG(member
->af_flags
[afi
][safi
],
7440 PEER_FLAG_MAX_PREFIX_FORCE
);
7443 SET_FLAG(member
->af_flags
[afi
][safi
],
7444 PEER_FLAG_MAX_PREFIX_WARNING
);
7446 UNSET_FLAG(member
->af_flags
[afi
][safi
],
7447 PEER_FLAG_MAX_PREFIX_WARNING
);
7449 /* Re-check if peer violates maximum-prefix. */
7450 if ((peer_established(member
)) && (member
->afc
[afi
][safi
]))
7451 bgp_maximum_prefix_overflow(member
, afi
, safi
, 1);
7457 int peer_maximum_prefix_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
7459 /* Inherit configuration from peer-group if peer is member. */
7460 if (peer_group_active(peer
)) {
7461 peer_af_flag_inherit(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX
);
7462 peer_af_flag_inherit(peer
, afi
, safi
,
7463 PEER_FLAG_MAX_PREFIX_FORCE
);
7464 peer_af_flag_inherit(peer
, afi
, safi
,
7465 PEER_FLAG_MAX_PREFIX_WARNING
);
7466 PEER_ATTR_INHERIT(peer
, peer
->group
, pmax
[afi
][safi
]);
7467 PEER_ATTR_INHERIT(peer
, peer
->group
, pmax_threshold
[afi
][safi
]);
7468 PEER_ATTR_INHERIT(peer
, peer
->group
, pmax_restart
[afi
][safi
]);
7473 /* Remove flags and configuration from peer. */
7474 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX
);
7475 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_FORCE
);
7476 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_WARNING
);
7477 peer
->pmax
[afi
][safi
] = 0;
7478 peer
->pmax_threshold
[afi
][safi
] = 0;
7479 peer
->pmax_restart
[afi
][safi
] = 0;
7482 * Remove flags and configuration from all peer-group members, unless
7483 * they are explicitly overriding peer-group configuration.
7485 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7486 struct peer
*member
;
7487 struct listnode
*node
;
7489 for (ALL_LIST_ELEMENTS_RO(peer
->group
->peer
, node
, member
)) {
7490 /* Skip peers with overridden configuration. */
7491 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
7492 PEER_FLAG_MAX_PREFIX
))
7495 /* Remove flag and configuration on peer-group member.
7497 UNSET_FLAG(member
->af_flags
[afi
][safi
],
7498 PEER_FLAG_MAX_PREFIX
);
7499 UNSET_FLAG(member
->af_flags
[afi
][safi
],
7500 PEER_FLAG_MAX_PREFIX_FORCE
);
7501 UNSET_FLAG(member
->af_flags
[afi
][safi
],
7502 PEER_FLAG_MAX_PREFIX_WARNING
);
7503 member
->pmax
[afi
][safi
] = 0;
7504 member
->pmax_threshold
[afi
][safi
] = 0;
7505 member
->pmax_restart
[afi
][safi
] = 0;
7507 peer_maximum_prefix_clear_overflow(member
);
7510 peer_maximum_prefix_clear_overflow(peer
);
7516 void peer_maximum_prefix_out_refresh_routes(struct peer
*peer
, afi_t afi
,
7519 update_group_adjust_peer(peer_af_find(peer
, afi
, safi
));
7521 if (peer_established(peer
))
7522 bgp_announce_route(peer
, afi
, safi
, false);
7525 int peer_maximum_prefix_out_set(struct peer
*peer
, afi_t afi
, safi_t safi
,
7528 struct peer
*member
;
7529 struct listnode
*node
, *nnode
;
7531 /* Set flag on peer and peer-group member if any */
7532 peer_af_flag_set(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_OUT
);
7533 /* Set configuration on peer. */
7534 peer
->pmax_out
[afi
][safi
] = max
;
7536 /* Check if handling a regular peer. */
7537 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7538 /* Skip peer-group mechanics for regular peers. */
7539 peer_maximum_prefix_out_refresh_routes(peer
, afi
, safi
);
7544 * Set flag and configuration on all peer-group members, unless they
7545 * are explicitly overriding peer-group configuration.
7547 for (ALL_LIST_ELEMENTS(peer
->group
->peer
, node
, nnode
, member
)) {
7548 /* Skip peers with overridden configuration. */
7549 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
7550 PEER_FLAG_MAX_PREFIX_OUT
))
7553 /* Set configuration on peer-group member. */
7554 member
->pmax_out
[afi
][safi
] = max
;
7556 peer_maximum_prefix_out_refresh_routes(member
, afi
, safi
);
7561 int peer_maximum_prefix_out_unset(struct peer
*peer
, afi_t afi
, safi_t safi
)
7563 struct peer
*member
;
7564 struct listnode
*node
;
7565 /* Inherit configuration from peer-group if peer is member. */
7566 if (peer_group_active(peer
)) {
7567 peer_af_flag_inherit(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_OUT
);
7568 PEER_ATTR_INHERIT(peer
, peer
->group
, pmax_out
[afi
][safi
]);
7570 peer_maximum_prefix_out_refresh_routes(peer
, afi
, safi
);
7574 /* Remove flag and configuration from peer. */
7575 peer_af_flag_unset(peer
, afi
, safi
, PEER_FLAG_MAX_PREFIX_OUT
);
7576 peer
->pmax_out
[afi
][safi
] = 0;
7578 /* Check if handling a regular peer. */
7579 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7580 /* Skip peer-group mechanics for regular peers. */
7581 peer_maximum_prefix_out_refresh_routes(peer
, afi
, safi
);
7586 * Remove flag and configuration from all peer-group members, unless
7587 * they are explicitly overriding peer-group configuration.
7589 for (ALL_LIST_ELEMENTS_RO(peer
->group
->peer
, node
, member
)) {
7590 /* Skip peers with overridden configuration. */
7591 if (CHECK_FLAG(member
->af_flags_override
[afi
][safi
],
7592 PEER_FLAG_MAX_PREFIX_OUT
))
7595 /* Remove flag and configuration on peer-group member.
7597 UNSET_FLAG(member
->af_flags
[afi
][safi
],
7598 PEER_FLAG_MAX_PREFIX_OUT
);
7599 member
->pmax_out
[afi
][safi
] = 0;
7601 peer_maximum_prefix_out_refresh_routes(member
, afi
, safi
);
7606 int is_ebgp_multihop_configured(struct peer
*peer
)
7608 struct peer_group
*group
;
7609 struct listnode
*node
, *nnode
;
7612 if (CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7613 group
= peer
->group
;
7614 if ((peer_sort(peer
) != BGP_PEER_IBGP
)
7615 && (group
->conf
->ttl
!= BGP_DEFAULT_TTL
))
7618 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer1
)) {
7619 if ((peer_sort(peer1
) != BGP_PEER_IBGP
)
7620 && (peer1
->ttl
!= BGP_DEFAULT_TTL
))
7624 if ((peer_sort(peer
) != BGP_PEER_IBGP
)
7625 && (peer
->ttl
!= BGP_DEFAULT_TTL
))
7631 /* Set # of hops between us and BGP peer. */
7632 int peer_ttl_security_hops_set(struct peer
*peer
, int gtsm_hops
)
7634 struct peer_group
*group
;
7636 struct listnode
*node
, *nnode
;
7639 zlog_debug("%s: set gtsm_hops to %d for %s", __func__
, gtsm_hops
,
7642 /* We cannot configure ttl-security hops when ebgp-multihop is already
7643 set. For non peer-groups, the check is simple. For peer-groups,
7645 slightly messy, because we need to check both the peer-group
7647 and all peer-group members for any trace of ebgp-multihop
7649 before actually applying the ttl-security rules. Cisco really made a
7650 mess of this configuration parameter, and OpenBGPD got it right.
7653 if ((peer
->gtsm_hops
== BGP_GTSM_HOPS_DISABLED
)
7654 && (peer
->sort
!= BGP_PEER_IBGP
)) {
7655 if (is_ebgp_multihop_configured(peer
))
7656 return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK
;
7658 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7659 peer
->gtsm_hops
= gtsm_hops
;
7661 /* Calling ebgp multihop also resets the session.
7662 * On restart, NHT will get setup correctly as will the
7663 * min & max ttls on the socket. The return value is
7666 ret
= peer_ebgp_multihop_set(peer
, MAXTTL
);
7671 group
= peer
->group
;
7672 group
->conf
->gtsm_hops
= gtsm_hops
;
7673 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
,
7675 gpeer
->gtsm_hops
= group
->conf
->gtsm_hops
;
7677 /* Calling ebgp multihop also resets the
7679 * On restart, NHT will get setup correctly as
7681 * min & max ttls on the socket. The return
7685 peer_ebgp_multihop_set(gpeer
, MAXTTL
);
7689 /* Post the first gtsm setup or if its ibgp, maxttl setting
7691 * necessary, just set the minttl.
7693 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7694 peer
->gtsm_hops
= gtsm_hops
;
7697 sockopt_minttl(peer
->su
.sa
.sa_family
, peer
->fd
,
7698 MAXTTL
+ 1 - gtsm_hops
);
7699 if ((peer
->status
< Established
) && peer
->doppelganger
7700 && (peer
->doppelganger
->fd
>= 0))
7701 sockopt_minttl(peer
->su
.sa
.sa_family
,
7702 peer
->doppelganger
->fd
,
7703 MAXTTL
+ 1 - gtsm_hops
);
7705 group
= peer
->group
;
7706 group
->conf
->gtsm_hops
= gtsm_hops
;
7707 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
,
7709 gpeer
->gtsm_hops
= group
->conf
->gtsm_hops
;
7711 /* Change setting of existing peer
7712 * established then change value (may break
7714 * not established yet (teardown session and
7716 * no session then do nothing (will get
7717 * handled by next connection)
7721 != BGP_GTSM_HOPS_DISABLED
)
7723 gpeer
->su
.sa
.sa_family
,
7725 MAXTTL
+ 1 - gpeer
->gtsm_hops
);
7726 if ((gpeer
->status
< Established
)
7727 && gpeer
->doppelganger
7728 && (gpeer
->doppelganger
->fd
>= 0))
7729 sockopt_minttl(gpeer
->su
.sa
.sa_family
,
7730 gpeer
->doppelganger
->fd
,
7731 MAXTTL
+ 1 - gtsm_hops
);
7739 int peer_ttl_security_hops_unset(struct peer
*peer
)
7741 struct peer_group
*group
;
7742 struct listnode
*node
, *nnode
;
7745 zlog_debug("%s: set gtsm_hops to zero for %s", __func__
, peer
->host
);
7747 /* if a peer-group member, then reset to peer-group default rather than
7749 if (peer_group_active(peer
))
7750 peer
->gtsm_hops
= peer
->group
->conf
->gtsm_hops
;
7752 peer
->gtsm_hops
= BGP_GTSM_HOPS_DISABLED
;
7754 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
)) {
7755 /* Invoking ebgp_multihop_set will set the TTL back to the
7757 * value as well as restting the NHT and such. The session is
7760 if (peer
->sort
== BGP_PEER_EBGP
)
7761 ret
= peer_ebgp_multihop_unset(peer
);
7764 sockopt_minttl(peer
->su
.sa
.sa_family
, peer
->fd
,
7767 if ((peer
->status
< Established
) && peer
->doppelganger
7768 && (peer
->doppelganger
->fd
>= 0))
7769 sockopt_minttl(peer
->su
.sa
.sa_family
,
7770 peer
->doppelganger
->fd
, 0);
7773 group
= peer
->group
;
7774 for (ALL_LIST_ELEMENTS(group
->peer
, node
, nnode
, peer
)) {
7775 peer
->gtsm_hops
= BGP_GTSM_HOPS_DISABLED
;
7776 if (peer
->sort
== BGP_PEER_EBGP
)
7777 ret
= peer_ebgp_multihop_unset(peer
);
7780 sockopt_minttl(peer
->su
.sa
.sa_family
,
7783 if ((peer
->status
< Established
)
7784 && peer
->doppelganger
7785 && (peer
->doppelganger
->fd
>= 0))
7786 sockopt_minttl(peer
->su
.sa
.sa_family
,
7787 peer
->doppelganger
->fd
,
7796 static void peer_reset_message_stats(struct peer
*peer
)
7799 atomic_store_explicit(&peer
->open_in
, 0, memory_order_relaxed
);
7800 atomic_store_explicit(&peer
->open_out
, 0, memory_order_relaxed
);
7801 atomic_store_explicit(&peer
->update_in
, 0,
7802 memory_order_relaxed
);
7803 atomic_store_explicit(&peer
->update_out
, 0,
7804 memory_order_relaxed
);
7805 atomic_store_explicit(&peer
->keepalive_in
, 0,
7806 memory_order_relaxed
);
7807 atomic_store_explicit(&peer
->keepalive_out
, 0,
7808 memory_order_relaxed
);
7809 atomic_store_explicit(&peer
->notify_in
, 0,
7810 memory_order_relaxed
);
7811 atomic_store_explicit(&peer
->notify_out
, 0,
7812 memory_order_relaxed
);
7813 atomic_store_explicit(&peer
->refresh_in
, 0,
7814 memory_order_relaxed
);
7815 atomic_store_explicit(&peer
->refresh_out
, 0,
7816 memory_order_relaxed
);
7817 atomic_store_explicit(&peer
->dynamic_cap_in
, 0,
7818 memory_order_relaxed
);
7819 atomic_store_explicit(&peer
->dynamic_cap_out
, 0,
7820 memory_order_relaxed
);
7825 * If peer clear is invoked in a loop for all peers on the BGP instance,
7826 * it may end up freeing the doppelganger, and if this was the next node
7827 * to the current node, we would end up accessing the freed next node.
7828 * Pass along additional parameter which can be updated if next node
7829 * is freed; only required when walking the peer list on BGP instance.
7831 int peer_clear(struct peer
*peer
, struct listnode
**nnode
)
7833 if (!CHECK_FLAG(peer
->flags
, PEER_FLAG_SHUTDOWN
)
7834 || !CHECK_FLAG(peer
->bgp
->flags
, BGP_FLAG_SHUTDOWN
)) {
7835 if (peer_maximum_prefix_clear_overflow(peer
))
7838 peer
->v_start
= BGP_INIT_START_TIMER
;
7839 if (BGP_IS_VALID_STATE_FOR_NOTIF(peer
->status
))
7840 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
7841 BGP_NOTIFY_CEASE_ADMIN_RESET
);
7843 bgp_session_reset_safe(peer
, nnode
);
7848 int peer_clear_soft(struct peer
*peer
, afi_t afi
, safi_t safi
,
7849 enum bgp_clear_type stype
)
7851 struct peer_af
*paf
;
7853 if (!peer_established(peer
))
7856 if (!peer
->afc
[afi
][safi
])
7857 return BGP_ERR_AF_UNCONFIGURED
;
7859 peer
->rtt
= sockopt_tcp_rtt(peer
->fd
);
7861 if (stype
== BGP_CLEAR_SOFT_OUT
|| stype
== BGP_CLEAR_SOFT_BOTH
) {
7862 /* Clear the "neighbor x.x.x.x default-originate" flag */
7863 paf
= peer_af_find(peer
, afi
, safi
);
7864 if (paf
&& paf
->subgroup
7865 && CHECK_FLAG(paf
->subgroup
->sflags
,
7866 SUBGRP_STATUS_DEFAULT_ORIGINATE
))
7867 UNSET_FLAG(paf
->subgroup
->sflags
,
7868 SUBGRP_STATUS_DEFAULT_ORIGINATE
);
7870 bgp_announce_route(peer
, afi
, safi
, false);
7873 if (stype
== BGP_CLEAR_SOFT_IN_ORF_PREFIX
) {
7874 if (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
7875 PEER_CAP_ORF_PREFIX_SM_ADV
)
7876 && (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
7877 PEER_CAP_ORF_PREFIX_RM_RCV
)
7878 || CHECK_FLAG(peer
->af_cap
[afi
][safi
],
7879 PEER_CAP_ORF_PREFIX_RM_OLD_RCV
))) {
7880 struct bgp_filter
*filter
= &peer
->filter
[afi
][safi
];
7881 uint8_t prefix_type
;
7883 if (CHECK_FLAG(peer
->af_cap
[afi
][safi
],
7884 PEER_CAP_ORF_PREFIX_RM_RCV
))
7885 prefix_type
= ORF_TYPE_PREFIX
;
7887 prefix_type
= ORF_TYPE_PREFIX_OLD
;
7889 if (filter
->plist
[FILTER_IN
].plist
) {
7890 if (CHECK_FLAG(peer
->af_sflags
[afi
][safi
],
7891 PEER_STATUS_ORF_PREFIX_SEND
))
7892 bgp_route_refresh_send(
7893 peer
, afi
, safi
, prefix_type
,
7895 BGP_ROUTE_REFRESH_NORMAL
);
7896 bgp_route_refresh_send(
7897 peer
, afi
, safi
, prefix_type
,
7898 REFRESH_IMMEDIATE
, 0,
7899 BGP_ROUTE_REFRESH_NORMAL
);
7901 if (CHECK_FLAG(peer
->af_sflags
[afi
][safi
],
7902 PEER_STATUS_ORF_PREFIX_SEND
))
7903 bgp_route_refresh_send(
7904 peer
, afi
, safi
, prefix_type
,
7905 REFRESH_IMMEDIATE
, 1,
7906 BGP_ROUTE_REFRESH_NORMAL
);
7908 bgp_route_refresh_send(
7909 peer
, afi
, safi
, 0, 0, 0,
7910 BGP_ROUTE_REFRESH_NORMAL
);
7916 if (stype
== BGP_CLEAR_SOFT_IN
|| stype
== BGP_CLEAR_SOFT_BOTH
7917 || stype
== BGP_CLEAR_SOFT_IN_ORF_PREFIX
) {
7918 /* If neighbor has soft reconfiguration inbound flag.
7919 Use Adj-RIB-In database. */
7920 if (CHECK_FLAG(peer
->af_flags
[afi
][safi
],
7921 PEER_FLAG_SOFT_RECONFIG
))
7922 bgp_soft_reconfig_in(peer
, afi
, safi
);
7924 /* If neighbor has route refresh capability, send route
7926 message to the peer. */
7927 if (CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_OLD_RCV
)
7928 || CHECK_FLAG(peer
->cap
, PEER_CAP_REFRESH_NEW_RCV
))
7929 bgp_route_refresh_send(
7930 peer
, afi
, safi
, 0, 0, 0,
7931 BGP_ROUTE_REFRESH_NORMAL
);
7933 return BGP_ERR_SOFT_RECONFIG_UNCONFIGURED
;
7937 if (stype
== BGP_CLEAR_MESSAGE_STATS
)
7938 peer_reset_message_stats(peer
);
7943 /* Display peer uptime.*/
7944 char *peer_uptime(time_t uptime2
, char *buf
, size_t len
, bool use_json
,
7947 time_t uptime1
, epoch_tbuf
;
7950 /* If there is no connection has been done before print `never'. */
7953 json_object_string_add(json
, "peerUptime", "never");
7954 json_object_int_add(json
, "peerUptimeMsec", 0);
7956 snprintf(buf
, len
, "never");
7960 /* Get current time. */
7961 uptime1
= monotime(NULL
);
7963 gmtime_r(&uptime1
, &tm
);
7965 if (uptime1
< ONE_DAY_SECOND
)
7966 snprintf(buf
, len
, "%02d:%02d:%02d", tm
.tm_hour
, tm
.tm_min
,
7968 else if (uptime1
< ONE_WEEK_SECOND
)
7969 snprintf(buf
, len
, "%dd%02dh%02dm", tm
.tm_yday
, tm
.tm_hour
,
7971 else if (uptime1
< ONE_YEAR_SECOND
)
7972 snprintf(buf
, len
, "%02dw%dd%02dh", tm
.tm_yday
/ 7,
7973 tm
.tm_yday
- ((tm
.tm_yday
/ 7) * 7), tm
.tm_hour
);
7975 snprintf(buf
, len
, "%02dy%02dw%dd", tm
.tm_year
- 70,
7977 tm
.tm_yday
- ((tm
.tm_yday
/ 7) * 7));
7980 epoch_tbuf
= time(NULL
) - uptime1
;
7981 json_object_string_add(json
, "peerUptime", buf
);
7982 json_object_int_add(json
, "peerUptimeMsec", uptime1
* 1000);
7983 json_object_int_add(json
, "peerUptimeEstablishedEpoch",
7990 void bgp_master_init(struct thread_master
*master
, const int buffer_size
,
7991 struct list
*addresses
)
7995 memset(&bgp_master
, 0, sizeof(bgp_master
));
7998 bm
->bgp
= list_new();
7999 bm
->listen_sockets
= list_new();
8000 bm
->port
= BGP_PORT_DEFAULT
;
8001 bm
->addresses
= addresses
;
8002 bm
->master
= master
;
8003 bm
->start_time
= monotime(NULL
);
8004 bm
->t_rmap_update
= NULL
;
8005 bm
->rmap_update_timer
= RMAP_DEFAULT_UPDATE_TIMER
;
8006 bm
->v_update_delay
= BGP_UPDATE_DELAY_DEF
;
8007 bm
->v_establish_wait
= BGP_UPDATE_DELAY_DEF
;
8008 bm
->terminating
= false;
8009 bm
->socket_buffer
= buffer_size
;
8010 bm
->wait_for_fib
= false;
8011 bm
->tcp_dscp
= IPTOS_PREC_INTERNETCONTROL
;
8014 /* init the rd id space.
8015 assign 0th index in the bitfield,
8016 so that we start with id 1
8018 bf_init(bm
->rd_idspace
, UINT16_MAX
);
8019 bf_assign_zero_index(bm
->rd_idspace
);
8021 /* mpls label dynamic allocation pool */
8022 bgp_lp_init(bm
->master
, &bm
->labelpool
);
8026 QOBJ_REG(bm
, bgp_master
);
8030 * Free up connected routes and interfaces for a BGP instance. Invoked upon
8031 * instance delete (non-default only) or BGP exit.
8033 static void bgp_if_finish(struct bgp
*bgp
)
8036 struct interface
*ifp
;
8038 vrf
= bgp_vrf_lookup_by_instance_type(bgp
);
8040 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VIEW
|| !vrf
)
8043 FOR_ALL_INTERFACES (vrf
, ifp
) {
8044 struct listnode
*c_node
, *c_nnode
;
8045 struct connected
*c
;
8047 for (ALL_LIST_ELEMENTS(ifp
->connected
, c_node
, c_nnode
, c
))
8048 bgp_connected_delete(bgp
, c
);
8052 static void bgp_viewvrf_autocomplete(vector comps
, struct cmd_token
*token
)
8054 struct vrf
*vrf
= NULL
;
8055 struct listnode
*next
;
8058 RB_FOREACH (vrf
, vrf_name_head
, &vrfs_by_name
)
8059 vector_set(comps
, XSTRDUP(MTYPE_COMPLETION
, vrf
->name
));
8061 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, bgp
)) {
8062 if (bgp
->inst_type
!= BGP_INSTANCE_TYPE_VIEW
)
8065 vector_set(comps
, XSTRDUP(MTYPE_COMPLETION
, bgp
->name
));
8069 static void bgp_instasn_autocomplete(vector comps
, struct cmd_token
*token
)
8071 struct listnode
*next
, *next2
;
8072 struct bgp
*bgp
, *bgp2
;
8075 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next
, bgp
)) {
8077 for (ALL_LIST_ELEMENTS_RO(bm
->bgp
, next2
, bgp2
)) {
8078 if (bgp2
->as
== bgp
->as
)
8086 snprintf(buf
, sizeof(buf
), "%u", bgp
->as
);
8087 vector_set(comps
, XSTRDUP(MTYPE_COMPLETION
, buf
));
8091 static const struct cmd_variable_handler bgp_viewvrf_var_handlers
[] = {
8092 {.tokenname
= "VIEWVRFNAME", .completions
= bgp_viewvrf_autocomplete
},
8093 {.varname
= "instasn", .completions
= bgp_instasn_autocomplete
},
8094 {.completions
= NULL
},
8097 struct frr_pthread
*bgp_pth_io
;
8098 struct frr_pthread
*bgp_pth_ka
;
8100 static void bgp_pthreads_init(void)
8102 assert(!bgp_pth_io
);
8103 assert(!bgp_pth_ka
);
8105 struct frr_pthread_attr io
= {
8106 .start
= frr_pthread_attr_default
.start
,
8107 .stop
= frr_pthread_attr_default
.stop
,
8109 struct frr_pthread_attr ka
= {
8110 .start
= bgp_keepalives_start
,
8111 .stop
= bgp_keepalives_stop
,
8113 bgp_pth_io
= frr_pthread_new(&io
, "BGP I/O thread", "bgpd_io");
8114 bgp_pth_ka
= frr_pthread_new(&ka
, "BGP Keepalives thread", "bgpd_ka");
8117 void bgp_pthreads_run(void)
8119 frr_pthread_run(bgp_pth_io
, NULL
);
8120 frr_pthread_run(bgp_pth_ka
, NULL
);
8122 /* Wait until threads are ready. */
8123 frr_pthread_wait_running(bgp_pth_io
);
8124 frr_pthread_wait_running(bgp_pth_ka
);
8127 void bgp_pthreads_finish(void)
8129 frr_pthread_stop_all();
8132 static int peer_unshut_after_cfg(struct bgp
*bgp
)
8134 struct listnode
*node
;
8137 for (ALL_LIST_ELEMENTS_RO(bgp
->peer
, node
, peer
)) {
8138 if (!peer
->shut_during_cfg
)
8141 if (bgp_debug_neighbor_events(peer
))
8142 zlog_debug("%s: released from config-pending hold",
8145 peer
->shut_during_cfg
= false;
8146 if (peer_active(peer
) && peer
->status
!= Established
) {
8147 if (peer
->status
!= Idle
)
8148 BGP_EVENT_ADD(peer
, BGP_Stop
);
8149 BGP_EVENT_ADD(peer
, BGP_Start
);
8156 void bgp_init(unsigned short instance
)
8158 hook_register(bgp_config_end
, peer_unshut_after_cfg
);
8160 /* allocates some vital data structures used by peer commands in
8163 /* pre-init pthreads */
8164 bgp_pthreads_init();
8167 bgp_zebra_init(bm
->master
, instance
);
8169 #ifdef ENABLE_BGP_VNC
8170 vnc_zebra_init(bm
->master
);
8173 /* BGP VTY commands installation. */
8179 bgp_community_alias_init();
8182 bgp_route_map_init();
8183 bgp_scan_vty_init();
8185 #ifdef ENABLE_BGP_VNC
8188 bgp_ethernetvpn_init();
8189 bgp_flowspec_vty_init();
8191 /* Access list initialize. */
8193 access_list_add_hook(peer_distribute_update
);
8194 access_list_delete_hook(peer_distribute_update
);
8196 /* Filter list initialize. */
8198 as_list_add_hook(peer_aslist_add
);
8199 as_list_delete_hook(peer_aslist_del
);
8201 /* Prefix list initialize.*/
8203 prefix_list_add_hook(peer_prefix_list_update
);
8204 prefix_list_delete_hook(peer_prefix_list_update
);
8206 /* Community list initialize. */
8207 bgp_clist
= community_list_init();
8210 bgp_bfd_init(bm
->master
);
8214 cmd_variable_handler_register(bgp_viewvrf_var_handlers
);
8217 void bgp_terminate(void)
8221 struct listnode
*node
, *nnode
;
8222 struct listnode
*mnode
, *mnnode
;
8226 /* Close the listener sockets first as this prevents peers from
8228 * to reconnect on receiving the peer unconfig message. In the presence
8229 * of a large number of peers this will ensure that no peer is left with
8230 * a dangling connection
8234 /* reverse bgp_master_init */
8235 for (ALL_LIST_ELEMENTS(bm
->bgp
, mnode
, mnnode
, bgp
)) {
8236 bgp_close_vrf_socket(bgp
);
8237 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
))
8238 if (peer_established(peer
) || peer
->status
== OpenSent
8239 || peer
->status
== OpenConfirm
)
8240 bgp_notify_send(peer
, BGP_NOTIFY_CEASE
,
8241 BGP_NOTIFY_CEASE_PEER_UNCONFIG
);
8244 if (bm
->listen_sockets
)
8245 list_delete(&bm
->listen_sockets
);
8247 THREAD_OFF(bm
->t_rmap_update
);
8252 struct peer
*peer_lookup_in_view(struct vty
*vty
, struct bgp
*bgp
,
8253 const char *ip_str
, bool use_json
)
8259 /* Get peer sockunion. */
8260 ret
= str2sockunion(ip_str
, &su
);
8262 peer
= peer_lookup_by_conf_if(bgp
, ip_str
);
8264 peer
= peer_lookup_by_hostname(bgp
, ip_str
);
8268 json_object
*json_no
= NULL
;
8269 json_no
= json_object_new_object();
8270 json_object_string_add(
8272 "malformedAddressOrName",
8274 vty_json(vty
, json_no
);
8277 "%% Malformed address or name: %s\n",
8285 /* Peer structure lookup. */
8286 peer
= peer_lookup(bgp
, &su
);
8289 json_object
*json_no
= NULL
;
8290 json_no
= json_object_new_object();
8291 json_object_string_add(json_no
, "warning",
8292 "No such neighbor in this view/vrf");
8293 vty_json(vty
, json_no
);
8295 vty_out(vty
, "No such neighbor in this view/vrf\n");
8302 void bgp_gr_apply_running_config(void)
8304 struct peer
*peer
= NULL
;
8305 struct bgp
*bgp
= NULL
;
8306 struct listnode
*node
, *nnode
;
8307 bool gr_router_detected
= false;
8309 if (BGP_DEBUG(graceful_restart
, GRACEFUL_RESTART
))
8310 zlog_debug("[BGP_GR] %s called !", __func__
);
8312 for (ALL_LIST_ELEMENTS(bm
->bgp
, node
, nnode
, bgp
)) {
8313 for (ALL_LIST_ELEMENTS(bgp
->peer
, node
, nnode
, peer
)) {
8314 bgp_peer_gr_flags_update(peer
);
8315 if (CHECK_FLAG(peer
->flags
, PEER_FLAG_GRACEFUL_RESTART
))
8316 gr_router_detected
= true;
8319 if (gr_router_detected
8320 && bgp
->present_zebra_gr_state
== ZEBRA_GR_DISABLE
) {
8321 bgp_zebra_send_capabilities(bgp
, true);
8322 } else if (!gr_router_detected
8323 && bgp
->present_zebra_gr_state
== ZEBRA_GR_ENABLE
) {
8324 bgp_zebra_send_capabilities(bgp
, false);
8327 gr_router_detected
= false;
8331 printfrr_ext_autoreg_p("BP", printfrr_bp
);
8332 static ssize_t
printfrr_bp(struct fbuf
*buf
, struct printfrr_eargs
*ea
,
8335 const struct peer
*peer
= ptr
;
8338 return bputs(buf
, "(null)");
8340 return bprintfrr(buf
, "%s(%s)", peer
->host
,
8341 peer
->hostname
? peer
->hostname
: "Unknown");