1 /* BGP message definition header.
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
21 #ifndef _QUAGGA_BGPD_H
22 #define _QUAGGA_BGPD_H
31 /* For union sockunion. */
33 #include "sockunion.h"
37 #include "bgp_memory.h"
41 #define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
42 #define BGP_PEER_MAX_HASH_SIZE 16384
44 /* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
45 #define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
47 struct update_subgroup
;
51 * Allow the neighbor XXXX remote-as to take internal or external
52 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
56 enum { AS_UNSPECIFIED
= 0,
62 /* Typedef BGP specific types. */
63 typedef u_int32_t as_t
;
64 typedef u_int16_t as16_t
; /* we may still encounter 16 Bit asnums */
65 typedef u_int16_t bgp_size_t
;
69 __typeof__(a) _a = (a); \
70 __typeof__(b) _b = (b); \
76 BGP_AF_IPV4_UNICAST
= BGP_AF_START
,
77 BGP_AF_IPV4_MULTICAST
,
80 BGP_AF_IPV6_MULTICAST
,
85 BGP_AF_IPV4_LBL_UNICAST
,
86 BGP_AF_IPV6_LBL_UNICAST
,
90 #define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
92 #define FOREACH_AFI_SAFI(afi, safi) \
93 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
94 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
96 /* BGP master for system wide configurations and variables. */
98 /* BGP instance list. */
101 /* BGP thread master. */
102 struct thread_master
*master
;
105 #define PTHREAD_IO (1 << 1)
106 #define PTHREAD_KEEPALIVES (1 << 2)
109 struct work_queue
*process_main_queue
;
111 /* Listening sockets */
112 struct list
*listen_sockets
;
114 /* BGP port number. */
117 /* Listener address */
120 /* BGP start time. */
123 /* Various BGP global configuration. */
125 #define BGP_OPT_NO_FIB (1 << 0)
126 #define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
127 #define BGP_OPT_CONFIG_CISCO (1 << 2)
128 #define BGP_OPT_NO_LISTEN (1 << 3)
130 uint64_t updgrp_idspace
;
131 uint64_t subgrp_idspace
;
133 /* timer to dampen route map changes */
134 struct thread
*t_rmap_update
; /* Handle route map updates */
135 u_int32_t rmap_update_timer
; /* Route map update timer */
137 /* clang-format off */
138 #define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
140 /* Id space for automatic RD derivation for an EVI/VRF */
141 bitfield_t rd_idspace
;
145 DECLARE_QOBJ_TYPE(bgp_master
)
147 /* BGP route-map structure. */
150 struct route_map
*map
;
156 /* BGP redistribute metric configuration. */
157 u_char redist_metric_flag
;
158 u_int32_t redist_metric
;
160 /* BGP redistribute route-map. */
161 struct bgp_rmap rmap
;
165 * Type of 'struct bgp'.
166 * - Default: The default instance
167 * - VRF: A specific (non-default) VRF
168 * - View: An instance used for route exchange
169 * The "default" instance is treated separately to simplify the code. Note
170 * that if deployed in a Multi-VRF environment, it may not exist.
172 enum bgp_instance_type
{
173 BGP_INSTANCE_TYPE_DEFAULT
,
174 BGP_INSTANCE_TYPE_VRF
,
175 BGP_INSTANCE_TYPE_VIEW
178 /* BGP instance structure. */
180 /* AS number of this BGP instance. */
183 /* Name of this BGP instance. */
186 /* Type of instance and VRF id. */
187 enum bgp_instance_type inst_type
;
190 /* Reference count to allow peer_delete to finish after bgp_delete */
194 struct peer
*peer_self
;
198 struct hash
*peerhash
;
200 /* BGP peer group. */
203 /* The maximum number of BGP dynamic neighbors that can be created */
204 int dynamic_neighbors_limit
;
206 /* The current number of BGP dynamic neighbors */
207 int dynamic_neighbors_count
;
209 struct hash
*update_groups
[BGP_AF_MAX
];
212 * Global statistics for update groups.
215 u_int32_t join_events
;
216 u_int32_t prune_events
;
217 u_int32_t merge_events
;
218 u_int32_t split_events
;
219 u_int32_t updgrp_switch_events
;
220 u_int32_t peer_refreshes_combined
;
222 u_int32_t merge_checks_triggered
;
224 u_int32_t updgrps_created
;
225 u_int32_t updgrps_deleted
;
226 u_int32_t subgrps_created
;
227 u_int32_t subgrps_deleted
;
228 } update_group_stats
;
230 /* BGP configuration. */
232 #define BGP_CONFIG_CLUSTER_ID (1 << 0)
233 #define BGP_CONFIG_CONFEDERATION (1 << 1)
235 /* BGP router identifier. */
236 struct in_addr router_id
;
237 struct in_addr router_id_static
;
238 struct in_addr router_id_zebra
;
240 /* BGP route reflector cluster ID. */
241 struct in_addr cluster_id
;
243 /* BGP confederation information. */
246 int confed_peers_cnt
;
249 *t_startup
; /* start-up timer on only once at the beginning */
251 u_int32_t v_maxmed_onstartup
; /* Duration of max-med on start-up */
253 /* clang-format off */
254 #define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
255 u_int32_t maxmed_onstartup_value
; /* Max-med value when active on
258 *t_maxmed_onstartup
; /* non-null when max-med onstartup is on */
259 u_char maxmed_onstartup_over
; /* Flag to make it effective only once */
261 u_char v_maxmed_admin
; /* 1/0 if max-med administrative is on/off */
263 /* clang-format off */
264 #define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
265 u_int32_t maxmed_admin_value
; /* Max-med value when administrative in on
268 /* clang-format off */
269 #define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
271 u_char maxmed_active
; /* 1/0 if max-med is active or not */
272 u_int32_t maxmed_value
; /* Max-med value when its active */
274 /* BGP update delay on startup */
275 struct thread
*t_update_delay
;
276 struct thread
*t_establish_wait
;
277 u_char update_delay_over
;
278 u_char main_zebra_update_hold
;
279 u_char main_peers_update_hold
;
280 u_int16_t v_update_delay
;
281 u_int16_t v_establish_wait
;
282 char update_delay_begin_time
[64];
283 char update_delay_end_time
[64];
284 char update_delay_zebra_resume_time
[64];
285 char update_delay_peers_resume_time
[64];
286 u_int32_t established
;
287 u_int32_t restarted_peers
;
288 u_int32_t implicit_eors
;
289 u_int32_t explicit_eors
;
290 #define BGP_UPDATE_DELAY_DEF 0
291 #define BGP_UPDATE_DELAY_MIN 0
292 #define BGP_UPDATE_DELAY_MAX 3600
296 #define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
297 #define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
298 #define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
299 #define BGP_FLAG_MED_CONFED (1 << 3)
300 #define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
301 #define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
302 #define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
303 #define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
304 #define BGP_FLAG_ASPATH_IGNORE (1 << 8)
305 #define BGP_FLAG_IMPORT_CHECK (1 << 9)
306 #define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
307 #define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
308 #define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
309 #define BGP_FLAG_ASPATH_CONFED (1 << 13)
310 #define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
311 #define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
312 #define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
313 #define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
314 #define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
315 #define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
316 #define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
317 #define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
319 /* BGP Per AF flags */
320 u_int16_t af_flags
[AFI_MAX
][SAFI_MAX
];
321 #define BGP_CONFIG_DAMPENING (1 << 0)
323 /* Route table for next-hop lookup cache. */
324 struct bgp_table
*nexthop_cache_table
[AFI_MAX
];
326 /* Route table for import-check */
327 struct bgp_table
*import_check_table
[AFI_MAX
];
329 struct bgp_table
*connected_table
[AFI_MAX
];
331 struct hash
*address_hash
;
333 /* DB for all local tunnel-ips - used mainly for martian checks
334 Currently it only has all VxLan tunnel IPs*/
335 struct hash
*tip_hash
;
337 /* Static route configuration. */
338 struct bgp_table
*route
[AFI_MAX
][SAFI_MAX
];
340 /* Aggregate address configuration. */
341 struct bgp_table
*aggregate
[AFI_MAX
][SAFI_MAX
];
343 /* BGP routing information base. */
344 struct bgp_table
*rib
[AFI_MAX
][SAFI_MAX
];
346 /* BGP table route-map. */
347 struct bgp_rmap table_map
[AFI_MAX
][SAFI_MAX
];
349 /* BGP redistribute configuration. */
350 struct list
*redist
[AFI_MAX
][ZEBRA_ROUTE_MAX
];
352 /* Allocate MPLS labels */
353 u_char allocate_mpls_labels
[AFI_MAX
][SAFI_MAX
];
355 /* timer to re-evaluate neighbor default-originate route-maps */
356 struct thread
*t_rmap_def_originate_eval
;
357 #define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
359 /* BGP distance configuration. */
360 u_char distance_ebgp
[AFI_MAX
][SAFI_MAX
];
361 u_char distance_ibgp
[AFI_MAX
][SAFI_MAX
];
362 u_char distance_local
[AFI_MAX
][SAFI_MAX
];
364 /* BGP default local-preference. */
365 u_int32_t default_local_pref
;
367 /* BGP default subgroup pkt queue max */
368 u_int32_t default_subgroup_pkt_queue_max
;
370 /* BGP default timer. */
371 u_int32_t default_holdtime
;
372 u_int32_t default_keepalive
;
374 /* BGP graceful restart */
375 u_int32_t restart_time
;
376 u_int32_t stalepath_time
;
378 /* Maximum-paths configuration */
379 struct bgp_maxpaths_cfg
{
380 u_int16_t maxpaths_ebgp
;
381 u_int16_t maxpaths_ibgp
;
382 u_int16_t ibgp_flags
;
383 #define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
384 } maxpaths
[AFI_MAX
][SAFI_MAX
];
386 _Atomic
uint32_t wpkt_quanta
; // max # packets to write per i/o cycle
387 _Atomic
uint32_t rpkt_quanta
; // max # packets to read per i/o cycle
389 /* Automatic coalesce adjust on/off */
390 bool heuristic_coalesce
;
391 /* Actual coalesce time */
392 uint32_t coalesce_time
;
394 /* Auto-shutdown new peers */
397 u_int32_t addpath_tx_id
;
398 int addpath_tx_used
[AFI_MAX
][SAFI_MAX
];
401 struct rfapi_cfg
*rfapi_cfg
;
405 /* EVPN related information */
408 struct hash
*vnihash
;
410 /* EVPN enable - advertise gateway macip routes */
411 int advertise_gw_macip
;
413 /* EVPN enable - advertise local VNIs and their MACs etc. */
414 int advertise_all_vni
;
416 /* Hash table of Import RTs to EVIs */
417 struct hash
*import_rt_hash
;
419 /* Hash table of VRF import RTs to VRFs */
420 struct hash
*vrf_import_rt_hash
;
422 /* L3-VNI corresponding to this vrf */
425 /* router-mac to be used in mac-ip routes for this vrf */
428 /* originator ip - to be used as NH for type-5 routes */
429 struct in_addr originator_ip
;
433 #define BGP_VRF_AUTO (1 << 0)
434 #define BGP_VRF_ADVERTISE_IPV4_IN_EVPN (1 << 1)
435 #define BGP_VRF_ADVERTISE_IPV6_IN_EVPN (1 << 2)
436 #define BGP_VRF_IMPORT_RT_CFGD (1 << 3)
437 #define BGP_VRF_EXPORT_RT_CFGD (1 << 4)
438 #define BGP_VRF_RD_CFGD (1 << 5)
439 #define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 6)
441 /* unique ID for auto derivation of RD for this vrf */
444 /* RD for this VRF */
445 struct prefix_rd vrf_prd
;
447 /* import rt list for the vrf instance */
448 struct list
*vrf_import_rtl
;
450 /* export rt list for the vrf instance */
451 struct list
*vrf_export_rtl
;
453 /* list of corresponding l2vnis (struct bgpevpn) */
456 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
457 struct bgp_rmap adv_cmd_rmap
[AFI_MAX
][SAFI_MAX
];
461 DECLARE_QOBJ_TYPE(bgp
)
463 #define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
465 #define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
466 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
467 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
468 && bgp->vrf_id != VRF_UNKNOWN))
470 /* BGP peer-group support. */
472 /* Name of the peer-group. */
475 /* Pointer to BGP. */
478 /* Peer-group client list. */
481 /** Dynamic neighbor listening ranges */
482 struct list
*listen_range
[AFI_MAX
];
484 /* Peer-group config */
488 /* BGP Notify message format. */
497 /* Next hop self address. */
499 struct interface
*ifp
;
501 struct in6_addr v6_global
;
502 struct in6_addr v6_local
;
505 /* BGP addpath values */
506 #define BGP_ADDPATH_RX 1
507 #define BGP_ADDPATH_TX 2
508 #define BGP_ADDPATH_ID_LEN 4
510 #define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
512 /* BGP router distinguisher value. */
513 #define BGP_RD_SIZE 8
516 u_char val
[BGP_RD_SIZE
];
525 /* BGP filter structure. */
527 /* Distribute-list. */
530 struct access_list
*alist
;
536 struct prefix_list
*plist
;
542 struct as_list
*aslist
;
543 } aslist
[FILTER_MAX
];
548 struct route_map
*map
;
551 /* Unsuppress-map. */
554 struct route_map
*map
;
558 /* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
559 a peer who's AS is part of our Confederation. */
567 /* BGP message header and packet size. */
568 #define BGP_MARKER_SIZE 16
569 #define BGP_HEADER_SIZE 19
570 #define BGP_MAX_PACKET_SIZE 4096
571 #define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
574 * Trigger delay for bgp_announce_route().
576 #define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
577 #define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
580 /* back pointer to the peer */
583 /* which subgroup the peer_af belongs to */
584 struct update_subgroup
*subgroup
;
586 /* for being part of an update subgroup's peer list */
587 LIST_ENTRY(peer_af
) subgrp_train
;
589 /* for being part of a packet's peer list */
590 LIST_ENTRY(peer_af
) pkt_train
;
592 struct bpacket
*next_pkt_to_send
;
595 * Trigger timer for bgp_announce_route().
597 struct thread
*t_announce_route
;
604 /* BGP neighbor structure. */
609 /* reference count, primarily to allow bgp_process'ing of route_node's
610 * to be done after a struct peer is deleted.
612 * named 'lock' for hysterical reasons within Quagga.
616 /* BGP peer group. */
617 struct peer_group
*group
;
618 uint64_t version
[AFI_MAX
][SAFI_MAX
];
620 /* BGP peer_af structures, per configured AF on this peer */
621 struct peer_af
*peer_af_array
[BGP_AF_MAX
];
623 /* Peer's remote AS number. */
627 /* Peer's local AS number. */
630 bgp_peer_sort_t sort
;
632 /* Peer's Change local AS number. */
633 as_t change_local_as
;
635 /* Remote router ID. */
636 struct in_addr remote_id
;
638 /* Local router ID. */
639 struct in_addr local_id
;
641 /* Packet receive and send buffer. */
642 pthread_mutex_t io_mtx
; // guards ibuf, obuf
643 struct stream_fifo
*ibuf
; // packets waiting to be processed
644 struct stream_fifo
*obuf
; // packets waiting to be written
646 struct ringbuf
*ibuf_work
; // WiP buffer used by bgp_read() only
647 struct stream
*obuf_work
; // WiP buffer used to construct packets
649 struct stream
*curr
; // the current packet being parsed
651 /* We use a separate stream to encode MP_REACH_NLRI for efficient
652 * NLRI packing. peer->obuf_work stores all the other attributes. The
653 * actual packet is then constructed by concatenating the two.
655 struct stream
*scratch
;
657 /* the doppelganger peer structure, due to dual TCP conn setup */
658 struct peer
*doppelganger
;
660 /* Status of the peer. */
664 /* FSM events, stored for debug purposes.
665 * Note: uchar used for reduced memory usage.
667 unsigned char cur_event
;
668 unsigned char last_event
;
669 unsigned char last_major_event
;
671 /* Peer index, used for dumping TABLE_DUMP_V2 format */
672 uint16_t table_dump_index
;
674 /* Peer information */
675 int fd
; /* File descriptor */
676 int ttl
; /* TTL of TCP connection to the peer. */
677 int rtt
; /* Estimated round-trip-time from TCP_INFO */
678 int gtsm_hops
; /* minimum hopcount to peer */
679 char *desc
; /* Description of the peer. */
680 unsigned short port
; /* Destination port for peer */
681 char *host
; /* Printable address of the peer. */
682 union sockunion su
; /* Sockunion address of the peer. */
684 /* clang-format off */
685 #define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
686 time_t uptime
; /* Last Up/Down time */
687 time_t readtime
; /* Last read time */
688 time_t resettime
; /* Last reset time */
690 ifindex_t ifindex
; /* ifindex of the BGP connection. */
691 char *conf_if
; /* neighbor interface config name. */
692 struct interface
*ifp
; /* corresponding interface */
693 char *ifname
; /* bind interface name. */
695 union sockunion
*update_source
;
697 union sockunion
*su_local
; /* Sockunion of local address. */
698 union sockunion
*su_remote
; /* Sockunion of remote address. */
699 int shared_network
; /* Is this peer shared same network. */
700 struct bgp_nexthop nexthop
; /* Nexthop */
702 /* Peer address family configuration. */
703 u_char afc
[AFI_MAX
][SAFI_MAX
];
704 u_char afc_nego
[AFI_MAX
][SAFI_MAX
];
705 u_char afc_adv
[AFI_MAX
][SAFI_MAX
];
706 u_char afc_recv
[AFI_MAX
][SAFI_MAX
];
708 /* Capability flags (reset in bgp_stop) */
710 #define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
711 #define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
712 #define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
713 #define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
714 #define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
715 #define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
716 #define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
717 #define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
718 #define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
719 #define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
720 #define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
721 #define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
722 #define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
723 #define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
724 #define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
725 #define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
726 #define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
728 /* Capability flags (reset in bgp_stop) */
729 u_int32_t af_cap
[AFI_MAX
][SAFI_MAX
];
730 #define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
731 #define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
732 #define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
733 #define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
734 #define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
735 #define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
736 #define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
737 #define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
738 #define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
739 #define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
740 #define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
741 #define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
742 #define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
743 #define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
744 #define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
746 /* Global configuration flags. */
748 #define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
749 #define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
750 #define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
751 #define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
752 #define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
753 #define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
754 #define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
755 #define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
756 #define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
757 #define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
758 #define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
759 #define PEER_FLAG_LONESOUL (1 << 11)
760 #define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
761 #define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
762 #define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
763 #define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
765 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
766 char *tx_shutdown_message
;
768 /* NSF mode (graceful restart) */
769 u_char nsf
[AFI_MAX
][SAFI_MAX
];
771 /* Per AF configuration flags. */
772 u_int32_t af_flags
[AFI_MAX
][SAFI_MAX
];
773 #define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
774 #define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
775 #define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
776 #define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
777 #define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
778 #define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
779 #define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
780 #define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
781 #define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
782 #define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
783 #define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
784 #define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
785 #define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
786 #define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
787 #define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
788 #define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
789 #define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
790 #define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
791 #define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
792 #define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
793 #define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
794 #define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
795 #define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
796 #define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
797 #define PEER_FLAG_WEIGHT (1 << 24) /* weight */
798 #define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
799 #define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
804 /* default-originate route-map. */
807 struct route_map
*map
;
808 } default_rmap
[AFI_MAX
][SAFI_MAX
];
810 /* Peer status flags. */
812 #define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
813 #define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
814 #define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
815 #define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
816 #define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
817 #define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
818 #define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
820 /* Peer status af flags (reset in bgp_stop) */
821 u_int16_t af_sflags
[AFI_MAX
][SAFI_MAX
];
822 #define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
823 #define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
824 #define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
825 #define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
826 #define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
827 #define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
829 /* Default attribute value for the peer. */
831 #define PEER_CONFIG_TIMER (1 << 0) /* keepalive & holdtime */
832 #define PEER_CONFIG_CONNECT (1 << 1) /* connect */
833 #define PEER_CONFIG_ROUTEADV (1 << 2) /* route advertise */
834 #define PEER_GROUP_CONFIG_TIMER (1 << 3) /* timers from peer-group */
836 #define PEER_OR_GROUP_TIMER_SET(peer) \
837 (CHECK_FLAG(peer->config, PEER_CONFIG_TIMER) \
838 || CHECK_FLAG(peer->config, PEER_GROUP_CONFIG_TIMER))
840 _Atomic
uint32_t holdtime
;
841 _Atomic
uint32_t keepalive
;
842 _Atomic
uint32_t connect
;
843 _Atomic
uint32_t routeadv
;
846 _Atomic
uint32_t v_start
;
847 _Atomic
uint32_t v_connect
;
848 _Atomic
uint32_t v_holdtime
;
849 _Atomic
uint32_t v_keepalive
;
850 _Atomic
uint32_t v_routeadv
;
851 _Atomic
uint32_t v_pmax_restart
;
852 _Atomic
uint32_t v_gr_restart
;
855 struct thread
*t_read
;
856 struct thread
*t_write
;
857 struct thread
*t_start
;
858 struct thread
*t_connect_check_r
;
859 struct thread
*t_connect_check_w
;
860 struct thread
*t_connect
;
861 struct thread
*t_holdtime
;
862 struct thread
*t_routeadv
;
863 struct thread
*t_pmax_restart
;
864 struct thread
*t_gr_restart
;
865 struct thread
*t_gr_stale
;
866 struct thread
*t_generate_updgrp_packets
;
867 struct thread
*t_process_packet
;
870 _Atomic
uint16_t thread_flags
;
871 #define PEER_THREAD_WRITES_ON (1 << 0)
872 #define PEER_THREAD_READS_ON (1 << 1)
873 #define PEER_THREAD_KEEPALIVES_ON (1 << 2)
875 struct work_queue
*clear_node_queue
;
877 #define PEER_TOTAL_RX(peer) \
878 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
879 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
880 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
881 + atomic_load_explicit(&peer->refresh_in, \
882 memory_order_relaxed) \
883 + atomic_load_explicit(&peer->keepalive_in, \
884 memory_order_relaxed) \
885 + atomic_load_explicit(&peer->dynamic_cap_in, \
886 memory_order_relaxed)
888 #define PEER_TOTAL_TX(peer) \
889 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
890 + atomic_load_explicit(&peer->update_out, \
891 memory_order_relaxed) \
892 + atomic_load_explicit(&peer->notify_out, \
893 memory_order_relaxed) \
894 + atomic_load_explicit(&peer->refresh_out, \
895 memory_order_relaxed) \
896 + atomic_load_explicit(&peer->keepalive_out, \
897 memory_order_relaxed) \
898 + atomic_load_explicit(&peer->dynamic_cap_out, \
899 memory_order_relaxed)
901 /* Statistics field */
902 _Atomic
uint32_t open_in
; /* Open message input count */
903 _Atomic
uint32_t open_out
; /* Open message output count */
904 _Atomic
uint32_t update_in
; /* Update message input count */
905 _Atomic
uint32_t update_out
; /* Update message ouput count */
906 _Atomic
time_t update_time
; /* Update message received time. */
907 _Atomic
uint32_t keepalive_in
; /* Keepalive input count */
908 _Atomic
uint32_t keepalive_out
; /* Keepalive output count */
909 _Atomic
uint32_t notify_in
; /* Notify input count */
910 _Atomic
uint32_t notify_out
; /* Notify output count */
911 _Atomic
uint32_t refresh_in
; /* Route Refresh input count */
912 _Atomic
uint32_t refresh_out
; /* Route Refresh output count */
913 _Atomic
uint32_t dynamic_cap_in
; /* Dynamic Capability input count. */
914 _Atomic
uint32_t dynamic_cap_out
; /* Dynamic Capability output count. */
916 /* BGP state count */
917 u_int32_t established
; /* Established */
918 u_int32_t dropped
; /* Dropped */
920 /* Update delay related fields */
921 u_char update_delay_over
; /* When this is set, BGP is no more waiting
924 /* Syncronization list and time. */
925 struct bgp_synchronize
*sync
[AFI_MAX
][SAFI_MAX
];
927 /* timestamp when the last UPDATE msg was written */
928 _Atomic
time_t last_write
;
929 /* timestamp when the last msg was written */
930 _Atomic
time_t last_update
;
932 /* Send prefix count. */
933 unsigned long scount
[AFI_MAX
][SAFI_MAX
];
936 struct bgp_notify notify
;
938 /* Filter structure. */
939 struct bgp_filter filter
[AFI_MAX
][SAFI_MAX
];
941 /* ORF Prefix-list */
942 struct prefix_list
*orf_plist
[AFI_MAX
][SAFI_MAX
];
944 /* Text description of last attribute rcvd */
945 char rcvd_attr_str
[BUFSIZ
];
947 /* Track if we printed the attribute in debugs */
948 int rcvd_attr_printed
;
951 unsigned long pcount
[AFI_MAX
][SAFI_MAX
];
953 /* Max prefix count. */
954 unsigned long pmax
[AFI_MAX
][SAFI_MAX
];
955 u_char pmax_threshold
[AFI_MAX
][SAFI_MAX
];
956 u_int16_t pmax_restart
[AFI_MAX
][SAFI_MAX
];
957 #define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
960 char allowas_in
[AFI_MAX
][SAFI_MAX
];
963 unsigned long weight
[AFI_MAX
][SAFI_MAX
];
965 /* peer reset cause */
967 #define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
968 #define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
969 #define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
970 #define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
971 #define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
972 #define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
973 #define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
974 #define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
975 #define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
976 #define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
977 #define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
978 #define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
979 #define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
980 #define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
981 #define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
982 #define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
983 #define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
984 #define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
985 #define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
986 #define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
987 #define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
988 #define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
989 #define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
990 #define PEER_DOWN_BFD_DOWN 24 /* BFD down */
991 #define PEER_DOWN_IF_DOWN 25 /* Interface down */
992 #define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
993 unsigned long last_reset_cause_size
;
994 u_char last_reset_cause
[BGP_MAX_PACKET_SIZE
];
996 /* The kind of route-map Flags.*/
998 #define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
999 #define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1000 #define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1001 #define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1002 #define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1003 #define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
1004 #define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1005 #define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
1007 /* peer specific BFD information */
1008 struct bfd_info
*bfd_info
;
1010 /* hostname and domainname advertised by host */
1016 DECLARE_QOBJ_TYPE(peer
)
1018 /* Check if suppress start/restart of sessions to peer. */
1019 #define BGP_PEER_START_SUPPRESSED(P) \
1020 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1021 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
1023 #define PEER_PASSWORD_MINLEN (1)
1024 #define PEER_PASSWORD_MAXLEN (80)
1026 /* This structure's member directly points incoming packet data
1030 uint16_t afi
; /* iana_afi_t */
1033 uint8_t safi
; /* iana_safi_t */
1035 /* Pointer to NLRI byte stream. */
1038 /* Length of whole NLRI. */
1043 #define BGP_VERSION_4 4
1045 /* Default BGP port number. */
1046 #define BGP_PORT_DEFAULT 179
1048 /* BGP minimum message size. */
1049 #define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1050 #define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1051 #define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1052 #define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1053 #define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1054 #define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1056 /* BGP message types. */
1057 #define BGP_MSG_OPEN 1
1058 #define BGP_MSG_UPDATE 2
1059 #define BGP_MSG_NOTIFY 3
1060 #define BGP_MSG_KEEPALIVE 4
1061 #define BGP_MSG_ROUTE_REFRESH_NEW 5
1062 #define BGP_MSG_CAPABILITY 6
1063 #define BGP_MSG_ROUTE_REFRESH_OLD 128
1065 /* BGP open optional parameter. */
1066 #define BGP_OPEN_OPT_AUTH 1
1067 #define BGP_OPEN_OPT_CAP 2
1069 /* BGP4 attribute type codes. */
1070 #define BGP_ATTR_ORIGIN 1
1071 #define BGP_ATTR_AS_PATH 2
1072 #define BGP_ATTR_NEXT_HOP 3
1073 #define BGP_ATTR_MULTI_EXIT_DISC 4
1074 #define BGP_ATTR_LOCAL_PREF 5
1075 #define BGP_ATTR_ATOMIC_AGGREGATE 6
1076 #define BGP_ATTR_AGGREGATOR 7
1077 #define BGP_ATTR_COMMUNITIES 8
1078 #define BGP_ATTR_ORIGINATOR_ID 9
1079 #define BGP_ATTR_CLUSTER_LIST 10
1080 #define BGP_ATTR_DPA 11
1081 #define BGP_ATTR_ADVERTISER 12
1082 #define BGP_ATTR_RCID_PATH 13
1083 #define BGP_ATTR_MP_REACH_NLRI 14
1084 #define BGP_ATTR_MP_UNREACH_NLRI 15
1085 #define BGP_ATTR_EXT_COMMUNITIES 16
1086 #define BGP_ATTR_AS4_PATH 17
1087 #define BGP_ATTR_AS4_AGGREGATOR 18
1088 #define BGP_ATTR_AS_PATHLIMIT 21
1089 #define BGP_ATTR_PMSI_TUNNEL 22
1090 #define BGP_ATTR_ENCAP 23
1091 #define BGP_ATTR_LARGE_COMMUNITIES 32
1092 #define BGP_ATTR_PREFIX_SID 40
1094 #define BGP_ATTR_VNC 255
1097 /* BGP update origin. */
1098 #define BGP_ORIGIN_IGP 0
1099 #define BGP_ORIGIN_EGP 1
1100 #define BGP_ORIGIN_INCOMPLETE 2
1102 /* BGP notify message codes. */
1103 #define BGP_NOTIFY_HEADER_ERR 1
1104 #define BGP_NOTIFY_OPEN_ERR 2
1105 #define BGP_NOTIFY_UPDATE_ERR 3
1106 #define BGP_NOTIFY_HOLD_ERR 4
1107 #define BGP_NOTIFY_FSM_ERR 5
1108 #define BGP_NOTIFY_CEASE 6
1109 #define BGP_NOTIFY_CAPABILITY_ERR 7
1111 #define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1113 /* BGP_NOTIFY_HEADER_ERR sub codes. */
1114 #define BGP_NOTIFY_HEADER_NOT_SYNC 1
1115 #define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1116 #define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
1118 /* BGP_NOTIFY_OPEN_ERR sub codes. */
1119 #define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
1120 #define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1121 #define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1122 #define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1123 #define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1124 #define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1125 #define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1126 #define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
1128 /* BGP_NOTIFY_UPDATE_ERR sub codes. */
1129 #define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1130 #define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1131 #define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1132 #define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1133 #define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1134 #define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1135 #define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1136 #define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1137 #define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1138 #define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1139 #define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
1141 /* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
1142 #define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1143 #define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1144 #define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1145 #define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1146 #define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1147 #define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
1148 #define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1149 #define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
1151 /* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1152 #define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1153 #define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1154 #define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
1156 /* BGP finite state machine status. */
1161 #define OpenConfirm 5
1162 #define Established 6
1165 #define BGP_STATUS_MAX 9
1167 /* BGP finite state machine events. */
1170 #define TCP_connection_open 3
1171 #define TCP_connection_closed 4
1172 #define TCP_connection_open_failed 5
1173 #define TCP_fatal_error 6
1174 #define ConnectRetry_timer_expired 7
1175 #define Hold_Timer_expired 8
1176 #define KeepAlive_timer_expired 9
1177 #define Receive_OPEN_message 10
1178 #define Receive_KEEPALIVE_message 11
1179 #define Receive_UPDATE_message 12
1180 #define Receive_NOTIFICATION_message 13
1181 #define Clearing_Completed 14
1182 #define BGP_EVENTS_MAX 15
1184 /* BGP timers default value. */
1185 /* note: the DFLT_ ones depend on compile-time "defaults" selection */
1186 #define BGP_INIT_START_TIMER 1
1187 #define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1188 #define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
1189 #define BGP_DEFAULT_EBGP_ROUTEADV 0
1190 #define BGP_DEFAULT_IBGP_ROUTEADV 0
1191 #define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
1193 /* BGP default local preference. */
1194 #define BGP_DEFAULT_LOCAL_PREF 100
1196 /* BGP local-preference to send when 'bgp graceful-shutdown'
1198 #define BGP_GSHUT_LOCAL_PREF 0
1200 /* BGP default subgroup packet queue max . */
1201 #define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1203 /* BGP graceful restart */
1204 #define BGP_DEFAULT_RESTART_TIME 120
1205 #define BGP_DEFAULT_STALEPATH_TIME 360
1207 /* BGP uptime string length. */
1208 #define BGP_UPTIME_LEN 25
1210 /* Default configuration settings for bgpd. */
1211 #define BGP_VTY_PORT 2605
1212 #define BGP_DEFAULT_CONFIG "bgpd.conf"
1214 /* Check AS path loop when we send NLRI. */
1215 /* #define BGP_SEND_ASPATH_CHECK */
1217 /* BGP Dynamic Neighbors feature */
1218 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1219 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1220 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1222 /* Flag for peer_clear_soft(). */
1223 enum bgp_clear_type
{
1224 BGP_CLEAR_SOFT_NONE
,
1227 BGP_CLEAR_SOFT_BOTH
,
1228 BGP_CLEAR_SOFT_IN_ORF_PREFIX
1232 #define BGP_INPUT(P) ((P)->curr)
1233 #define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
1234 #define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1235 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
1237 /* BGP error codes. */
1238 #define BGP_SUCCESS 0
1239 #define BGP_ERR_INVALID_VALUE -1
1240 #define BGP_ERR_INVALID_FLAG -2
1241 #define BGP_ERR_INVALID_AS -3
1242 #define BGP_ERR_INVALID_BGP -4
1243 #define BGP_ERR_PEER_GROUP_MEMBER -5
1244 #define BGP_ERR_MULTIPLE_INSTANCE_USED -6
1245 #define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1246 #define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1247 #define BGP_ERR_PEER_GROUP_MISMATCH -9
1248 #define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1249 #define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1250 #define BGP_ERR_AS_MISMATCH -12
1251 #define BGP_ERR_PEER_FLAG_CONFLICT -13
1252 #define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1253 #define BGP_ERR_PEER_FILTER_CONFLICT -15
1254 #define BGP_ERR_NOT_INTERNAL_PEER -16
1255 #define BGP_ERR_REMOVE_PRIVATE_AS -17
1256 #define BGP_ERR_AF_UNCONFIGURED -18
1257 #define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1258 #define BGP_ERR_INSTANCE_MISMATCH -20
1259 #define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1260 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1261 #define BGP_ERR_TCPSIG_FAILED -23
1262 #define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1263 #define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1264 #define BGP_ERR_NO_INTERFACE_CONFIG -26
1265 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1266 #define BGP_ERR_AS_OVERRIDE -28
1267 #define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1268 #define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1269 #define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1270 #define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1271 #define BGP_ERR_MAX -33
1272 #define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
1273 #define BGP_ERR_PEER_SAFI_CONFLICT -35
1276 * Enumeration of different policy kinds a peer can be configured with.
1279 BGP_POLICY_ROUTE_MAP
,
1280 BGP_POLICY_FILTER_LIST
,
1281 BGP_POLICY_PREFIX_LIST
,
1282 BGP_POLICY_DISTRIBUTE_LIST
,
1283 } bgp_policy_type_e
;
1285 extern struct bgp_master
*bm
;
1286 extern unsigned int multipath_num
;
1289 extern void bgp_terminate(void);
1290 extern void bgp_reset(void);
1291 extern time_t bgp_clock(void);
1292 extern void bgp_zclient_reset(void);
1293 extern int bgp_nexthop_set(union sockunion
*, union sockunion
*,
1294 struct bgp_nexthop
*, struct peer
*);
1295 extern struct bgp
*bgp_get_default(void);
1296 extern struct bgp
*bgp_lookup(as_t
, const char *);
1297 extern struct bgp
*bgp_lookup_by_name(const char *);
1298 extern struct bgp
*bgp_lookup_by_vrf_id(vrf_id_t
);
1299 extern struct peer
*peer_lookup(struct bgp
*, union sockunion
*);
1300 extern struct peer
*peer_lookup_by_conf_if(struct bgp
*, const char *);
1301 extern struct peer
*peer_lookup_by_hostname(struct bgp
*, const char *);
1302 extern void bgp_peer_conf_if_to_su_update(struct peer
*);
1303 extern int peer_group_listen_range_del(struct peer_group
*, struct prefix
*);
1304 extern struct peer_group
*peer_group_lookup(struct bgp
*, const char *);
1305 extern struct peer_group
*peer_group_get(struct bgp
*, const char *);
1306 extern struct peer
*peer_create_bind_dynamic_neighbor(struct bgp
*,
1308 struct peer_group
*);
1309 extern struct prefix
*
1310 peer_group_lookup_dynamic_neighbor_range(struct peer_group
*, struct prefix
*);
1311 extern struct peer_group
*peer_group_lookup_dynamic_neighbor(struct bgp
*,
1314 extern struct peer
*peer_lookup_dynamic_neighbor(struct bgp
*,
1316 extern void peer_drop_dynamic_neighbor(struct peer
*);
1319 * Peers are incredibly easy to memory leak
1320 * due to the various ways that they are actually used
1321 * Provide some functionality to debug locks and unlocks
1323 extern struct peer
*peer_lock_with_caller(const char *, struct peer
*);
1324 extern struct peer
*peer_unlock_with_caller(const char *, struct peer
*);
1325 #define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1326 #define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1328 extern bgp_peer_sort_t
peer_sort(struct peer
*peer
);
1329 extern int peer_active(struct peer
*);
1330 extern int peer_active_nego(struct peer
*);
1331 extern void bgp_recalculate_all_bestpaths(struct bgp
*bgp
);
1332 extern struct peer
*peer_create(union sockunion
*, const char *, struct bgp
*,
1333 as_t
, as_t
, int, afi_t
, safi_t
,
1334 struct peer_group
*);
1335 extern struct peer
*peer_create_accept(struct bgp
*);
1336 extern void peer_xfer_config(struct peer
*dst
, struct peer
*src
);
1337 extern char *peer_uptime(time_t, char *, size_t, u_char
, json_object
*);
1339 extern int bgp_config_write(struct vty
*);
1341 extern void bgp_master_init(struct thread_master
*master
);
1343 extern void bgp_init(void);
1344 extern void bgp_pthreads_run(void);
1345 extern void bgp_pthreads_finish(void);
1346 extern void bgp_route_map_init(void);
1347 extern void bgp_session_reset(struct peer
*);
1349 extern int bgp_option_set(int);
1350 extern int bgp_option_unset(int);
1351 extern int bgp_option_check(int);
1353 extern int bgp_get(struct bgp
**, as_t
*, const char *, enum bgp_instance_type
);
1354 extern void bgp_instance_up(struct bgp
*);
1355 extern void bgp_instance_down(struct bgp
*);
1356 extern int bgp_delete(struct bgp
*);
1358 extern int bgp_flag_set(struct bgp
*, int);
1359 extern int bgp_flag_unset(struct bgp
*, int);
1360 extern int bgp_flag_check(struct bgp
*, int);
1362 extern void bgp_router_id_zebra_bump(vrf_id_t
, const struct prefix
*);
1363 extern int bgp_router_id_static_set(struct bgp
*, struct in_addr
);
1365 extern int bgp_cluster_id_set(struct bgp
*, struct in_addr
*);
1366 extern int bgp_cluster_id_unset(struct bgp
*);
1368 extern int bgp_confederation_id_set(struct bgp
*, as_t
);
1369 extern int bgp_confederation_id_unset(struct bgp
*);
1370 extern int bgp_confederation_peers_check(struct bgp
*, as_t
);
1372 extern int bgp_confederation_peers_add(struct bgp
*, as_t
);
1373 extern int bgp_confederation_peers_remove(struct bgp
*, as_t
);
1375 extern int bgp_timers_set(struct bgp
*, u_int32_t keepalive
,
1376 u_int32_t holdtime
);
1377 extern int bgp_timers_unset(struct bgp
*);
1379 extern int bgp_default_local_preference_set(struct bgp
*, u_int32_t
);
1380 extern int bgp_default_local_preference_unset(struct bgp
*);
1382 extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp
*bgp
, u_int32_t
);
1383 extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp
*bgp
);
1385 extern int bgp_listen_limit_set(struct bgp
*, int);
1386 extern int bgp_listen_limit_unset(struct bgp
*);
1388 extern int bgp_update_delay_active(struct bgp
*);
1389 extern int bgp_update_delay_configured(struct bgp
*);
1390 extern int bgp_afi_safi_peer_exists(struct bgp
*bgp
, afi_t afi
, safi_t safi
);
1391 extern void peer_as_change(struct peer
*, as_t
, int);
1392 extern int peer_remote_as(struct bgp
*, union sockunion
*, const char *, as_t
*,
1393 int, afi_t
, safi_t
);
1394 extern int peer_group_remote_as(struct bgp
*, const char *, as_t
*, int);
1395 extern int peer_delete(struct peer
*peer
);
1396 extern int peer_group_delete(struct peer_group
*);
1397 extern int peer_group_remote_as_delete(struct peer_group
*);
1398 extern int peer_group_listen_range_add(struct peer_group
*, struct prefix
*);
1400 extern int peer_activate(struct peer
*, afi_t
, safi_t
);
1401 extern int peer_deactivate(struct peer
*, afi_t
, safi_t
);
1402 extern int peer_afc_set(struct peer
*, afi_t
, safi_t
, int);
1404 extern int peer_group_bind(struct bgp
*, union sockunion
*, struct peer
*,
1405 struct peer_group
*, as_t
*);
1406 extern int peer_group_unbind(struct bgp
*, struct peer
*, struct peer_group
*);
1408 extern int peer_flag_set(struct peer
*, u_int32_t
);
1409 extern int peer_flag_unset(struct peer
*, u_int32_t
);
1411 extern int peer_af_flag_set(struct peer
*, afi_t
, safi_t
, u_int32_t
);
1412 extern int peer_af_flag_unset(struct peer
*, afi_t
, safi_t
, u_int32_t
);
1413 extern int peer_af_flag_check(struct peer
*, afi_t
, safi_t
, u_int32_t
);
1415 extern int peer_ebgp_multihop_set(struct peer
*, int);
1416 extern int peer_ebgp_multihop_unset(struct peer
*);
1417 extern int is_ebgp_multihop_configured(struct peer
*peer
);
1419 extern int peer_description_set(struct peer
*, const char *);
1420 extern int peer_description_unset(struct peer
*);
1422 extern int peer_update_source_if_set(struct peer
*, const char *);
1423 extern int peer_update_source_addr_set(struct peer
*, const union sockunion
*);
1424 extern int peer_update_source_unset(struct peer
*);
1426 extern int peer_default_originate_set(struct peer
*, afi_t
, safi_t
,
1428 extern int peer_default_originate_unset(struct peer
*, afi_t
, safi_t
);
1430 extern int peer_port_set(struct peer
*, u_int16_t
);
1431 extern int peer_port_unset(struct peer
*);
1433 extern int peer_weight_set(struct peer
*, afi_t
, safi_t
, u_int16_t
);
1434 extern int peer_weight_unset(struct peer
*, afi_t
, safi_t
);
1436 extern int peer_timers_set(struct peer
*, u_int32_t keepalive
,
1437 u_int32_t holdtime
);
1438 extern int peer_timers_unset(struct peer
*);
1440 extern int peer_timers_connect_set(struct peer
*, u_int32_t
);
1441 extern int peer_timers_connect_unset(struct peer
*);
1443 extern int peer_advertise_interval_set(struct peer
*, u_int32_t
);
1444 extern int peer_advertise_interval_unset(struct peer
*);
1446 extern void peer_interface_set(struct peer
*, const char *);
1447 extern void peer_interface_unset(struct peer
*);
1449 extern int peer_distribute_set(struct peer
*, afi_t
, safi_t
, int, const char *);
1450 extern int peer_distribute_unset(struct peer
*, afi_t
, safi_t
, int);
1452 extern int peer_allowas_in_set(struct peer
*, afi_t
, safi_t
, int, int);
1453 extern int peer_allowas_in_unset(struct peer
*, afi_t
, safi_t
);
1455 extern int peer_local_as_set(struct peer
*, as_t
, int, int);
1456 extern int peer_local_as_unset(struct peer
*);
1458 extern int peer_prefix_list_set(struct peer
*, afi_t
, safi_t
, int,
1460 extern int peer_prefix_list_unset(struct peer
*, afi_t
, safi_t
, int);
1462 extern int peer_aslist_set(struct peer
*, afi_t
, safi_t
, int, const char *);
1463 extern int peer_aslist_unset(struct peer
*, afi_t
, safi_t
, int);
1465 extern int peer_route_map_set(struct peer
*, afi_t
, safi_t
, int, const char *);
1466 extern int peer_route_map_unset(struct peer
*, afi_t
, safi_t
, int);
1468 extern int peer_unsuppress_map_set(struct peer
*, afi_t
, safi_t
, const char *);
1470 extern int peer_password_set(struct peer
*, const char *);
1471 extern int peer_password_unset(struct peer
*);
1473 extern int peer_unsuppress_map_unset(struct peer
*, afi_t
, safi_t
);
1475 extern int peer_maximum_prefix_set(struct peer
*, afi_t
, safi_t
, u_int32_t
,
1476 u_char
, int, u_int16_t
);
1477 extern int peer_maximum_prefix_unset(struct peer
*, afi_t
, safi_t
);
1479 extern int peer_clear(struct peer
*, struct listnode
**);
1480 extern int peer_clear_soft(struct peer
*, afi_t
, safi_t
, enum bgp_clear_type
);
1482 extern int peer_ttl_security_hops_set(struct peer
*, int);
1483 extern int peer_ttl_security_hops_unset(struct peer
*);
1485 extern int peer_tx_shutdown_message_set(struct peer
*, const char *msg
);
1486 extern int peer_tx_shutdown_message_unset(struct peer
*);
1488 extern int bgp_route_map_update_timer(struct thread
*thread
);
1489 extern void bgp_route_map_terminate(void);
1491 extern int peer_cmp(struct peer
*p1
, struct peer
*p2
);
1493 extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi
, iana_safi_t pkt_safi
,
1494 afi_t
*afi
, safi_t
*safi
);
1495 extern int bgp_map_afi_safi_int2iana(afi_t afi
, safi_t safi
,
1496 iana_afi_t
*pkt_afi
,
1497 iana_safi_t
*pkt_safi
);
1499 extern struct peer_af
*peer_af_create(struct peer
*, afi_t
, safi_t
);
1500 extern struct peer_af
*peer_af_find(struct peer
*, afi_t
, safi_t
);
1501 extern int peer_af_delete(struct peer
*, afi_t
, safi_t
);
1503 extern void bgp_close(void);
1504 extern void bgp_free(struct bgp
*);
1506 static inline struct bgp
*bgp_lock(struct bgp
*bgp
)
1512 static inline void bgp_unlock(struct bgp
*bgp
)
1514 assert(bgp
->lock
> 0);
1515 if (--bgp
->lock
== 0)
1519 static inline int afindex(afi_t afi
, safi_t safi
)
1525 return BGP_AF_IPV4_UNICAST
;
1527 case SAFI_MULTICAST
:
1528 return BGP_AF_IPV4_MULTICAST
;
1530 case SAFI_LABELED_UNICAST
:
1531 return BGP_AF_IPV4_LBL_UNICAST
;
1534 return BGP_AF_IPV4_VPN
;
1537 return BGP_AF_IPV4_ENCAP
;
1547 return BGP_AF_IPV6_UNICAST
;
1549 case SAFI_MULTICAST
:
1550 return BGP_AF_IPV6_MULTICAST
;
1552 case SAFI_LABELED_UNICAST
:
1553 return BGP_AF_IPV6_LBL_UNICAST
;
1556 return BGP_AF_IPV6_VPN
;
1559 return BGP_AF_IPV6_ENCAP
;
1569 return BGP_AF_L2VPN_EVPN
;
1581 /* If the peer is not a peer-group but is bound to a peer-group return 1 */
1582 static inline int peer_group_active(struct peer
*peer
)
1584 if (!CHECK_FLAG(peer
->sflags
, PEER_STATUS_GROUP
) && peer
->group
)
1589 /* If peer is negotiated at least one address family return 1. */
1590 static inline int peer_afi_active_nego(const struct peer
*peer
, afi_t afi
)
1592 if (peer
->afc_nego
[afi
][SAFI_UNICAST
]
1593 || peer
->afc_nego
[afi
][SAFI_MULTICAST
]
1594 || peer
->afc_nego
[afi
][SAFI_LABELED_UNICAST
]
1595 || peer
->afc_nego
[afi
][SAFI_MPLS_VPN
]
1596 || peer
->afc_nego
[afi
][SAFI_ENCAP
]
1597 || peer
->afc_nego
[afi
][SAFI_EVPN
])
1602 /* If at least one address family activated for group, return 1. */
1603 static inline int peer_group_af_configured(struct peer_group
*group
)
1605 struct peer
*peer
= group
->conf
;
1607 if (peer
->afc
[AFI_IP
][SAFI_UNICAST
] || peer
->afc
[AFI_IP
][SAFI_MULTICAST
]
1608 || peer
->afc
[AFI_IP
][SAFI_LABELED_UNICAST
]
1609 || peer
->afc
[AFI_IP
][SAFI_MPLS_VPN
] || peer
->afc
[AFI_IP
][SAFI_ENCAP
]
1610 || peer
->afc
[AFI_IP6
][SAFI_UNICAST
]
1611 || peer
->afc
[AFI_IP6
][SAFI_MULTICAST
]
1612 || peer
->afc
[AFI_IP6
][SAFI_LABELED_UNICAST
]
1613 || peer
->afc
[AFI_IP6
][SAFI_MPLS_VPN
]
1614 || peer
->afc
[AFI_IP6
][SAFI_ENCAP
]
1615 || peer
->afc
[AFI_L2VPN
][SAFI_EVPN
])
1620 static inline char *timestamp_string(time_t ts
)
1623 tbuf
= time(NULL
) - (bgp_clock() - ts
);
1624 return ctime(&tbuf
);
1627 static inline int peer_established(struct peer
*peer
)
1629 if (peer
->status
== Established
)
1634 static inline int peer_dynamic_neighbor(struct peer
*peer
)
1636 return (CHECK_FLAG(peer
->flags
, PEER_FLAG_DYNAMIC_NEIGHBOR
)) ? 1 : 0;
1639 static inline int peer_cap_enhe(struct peer
*peer
, afi_t afi
, safi_t safi
)
1641 return (CHECK_FLAG(peer
->af_cap
[afi
][safi
], PEER_CAP_ENHE_AF_NEGO
));
1644 /* Lookup VRF for BGP instance based on its type. */
1645 static inline struct vrf
*bgp_vrf_lookup_by_instance_type(struct bgp
*bgp
)
1649 if (bgp
->inst_type
== BGP_INSTANCE_TYPE_DEFAULT
)
1650 vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
1651 else if (bgp
->inst_type
== BGP_INSTANCE_TYPE_VRF
)
1652 vrf
= vrf_lookup_by_name(bgp
->name
);
1659 /* Link BGP instance to VRF. */
1660 static inline void bgp_vrf_link(struct bgp
*bgp
, struct vrf
*vrf
)
1662 bgp
->vrf_id
= vrf
->vrf_id
;
1663 if (vrf
->info
!= (void *)bgp
)
1664 vrf
->info
= (void *)bgp_lock(bgp
);
1667 /* Unlink BGP instance from VRF. */
1668 static inline void bgp_vrf_unlink(struct bgp
*bgp
, struct vrf
*vrf
)
1670 if (vrf
->info
== (void *)bgp
) {
1674 bgp
->vrf_id
= VRF_UNKNOWN
;
1677 extern void bgp_update_redist_vrf_bitmaps(struct bgp
*, vrf_id_t
);
1679 /* For benefit of rfapi */
1680 extern struct peer
*peer_new(struct bgp
*bgp
);
1682 #endif /* _QUAGGA_BGPD_H */