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bgpd: Add peer action for PEER_FLAG_IFPEER_V6ONLY flag
[mirror_frr.git] / bgpd / bgpd.h
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718e3744 1/* BGP message definition header.
896014f4
DL		 2 * Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3 *
4 * This file is part of GNU Zebra.
5 *
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
9 * later version.
10 *
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.
15 *
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
19 */
718e3744 20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
19df7279 24#include "qobj.h"
d3ecc69e
QY		 25#include <pthread.h>
26
856ca177 27#include "lib/json.h"
6aeb9e78 28#include "vrf.h"
94c60424 29#include "vty.h"
6aeb9e78 30
718e3744 31/* For union sockunion. */
3f9c7369 32#include "queue.h"
718e3744 33#include "sockunion.h"
518f0eb1 34#include "routemap.h"
ffd0c037 35#include "linklist.h"
8efe88ea 36#include "defaults.h"
4a1ab8e4 37#include "bgp_memory.h"
14c1a7bf 38#include "bitfield.h"
fe1dc5a3 39#include "vxlan.h"
955bfd98 40#include "bgp_labelpool.h"
718e3744 41
04b6bdc0 42#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 43#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 44
5c81b96a 45/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
46#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
47
3f9c7369
DS		 48struct update_subgroup;
49struct bpacket;
4762c213 50struct bgp_pbr_config;
3f9c7369 51
0299c004
DS		 52/*
53 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 54 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
55 * behavior
0299c004
DS		 56 * in the system.
57 */
d62a17ae 58enum { AS_UNSPECIFIED = 0,
59 AS_SPECIFIED,
60 AS_INTERNAL,
61 AS_EXTERNAL,
0299c004
DS		 62};
63
718e3744 64/* Typedef BGP specific types. */
d7c0a89a
QY		 65typedef uint32_t as_t;
66typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
67typedef uint16_t bgp_size_t;
718e3744 68
d62a17ae 69#define max(a, b) \
70 ({ \
71 __typeof__(a) _a = (a); \
72 __typeof__(b) _b = (b); \
73 _a > _b ? _a : _b; \
74 })
75
76enum bgp_af_index {
77 BGP_AF_START,
78 BGP_AF_IPV4_UNICAST = BGP_AF_START,
79 BGP_AF_IPV4_MULTICAST,
80 BGP_AF_IPV4_VPN,
81 BGP_AF_IPV6_UNICAST,
82 BGP_AF_IPV6_MULTICAST,
83 BGP_AF_IPV6_VPN,
84 BGP_AF_IPV4_ENCAP,
85 BGP_AF_IPV6_ENCAP,
86 BGP_AF_L2VPN_EVPN,
87 BGP_AF_IPV4_LBL_UNICAST,
88 BGP_AF_IPV6_LBL_UNICAST,
7c40bf39 89 BGP_AF_IPV4_FLOWSPEC,
90 BGP_AF_IPV6_FLOWSPEC,
d62a17ae 91 BGP_AF_MAX
3f9c7369
DS		 92};
93
d62a17ae 94#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 95
d62a17ae 96#define FOREACH_AFI_SAFI(afi, safi) \
97 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
98 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 99
718e3744 100/* BGP master for system wide configurations and variables. */
d62a17ae 101struct bgp_master {
102 /* BGP instance list. */
103 struct list *bgp;
104
105 /* BGP thread master. */
106 struct thread_master *master;
718e3744 107
0ca8b79f 108/* BGP pthreads. */
424ab01d 109#define PTHREAD_IO (1 << 1)
0ca8b79f 110#define PTHREAD_KEEPALIVES (1 << 2)
2d4ee774 111
d62a17ae 112 /* work queues */
113 struct work_queue *process_main_queue;
87d4a781 114
d62a17ae 115 /* Listening sockets */
116 struct list *listen_sockets;
718e3744 117
d62a17ae 118 /* BGP port number. */
d7c0a89a 119 uint16_t port;
3a02d1f7 120
d62a17ae 121 /* Listener address */
122 char *address;
718e3744 123
d62a17ae 124 /* BGP start time. */
125 time_t start_time;
126
127 /* Various BGP global configuration. */
d7c0a89a 128 uint8_t options;
718e3744 129#define BGP_OPT_NO_FIB (1 << 0)
130#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
131#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 132#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369 133
d62a17ae 134 uint64_t updgrp_idspace;
135 uint64_t subgrp_idspace;
5fe9f963 136
d62a17ae 137 /* timer to dampen route map changes */
138 struct thread *t_rmap_update; /* Handle route map updates */
d7c0a89a 139 uint32_t rmap_update_timer; /* Route map update timer */
5fe9f963 140#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 141
e9eb5f63 142 /* Id space for automatic RD derivation for an EVI/VRF */
143 bitfield_t rd_idspace;
144
955bfd98
PZ		 145 /* dynamic mpls label allocation pool */
146 struct labelpool labelpool;
147
97b4a0ec 148 bool terminating; /* global flag that sigint terminate seen */
d62a17ae 149 QOBJ_FIELDS
718e3744 150};
19df7279 151DECLARE_QOBJ_TYPE(bgp_master)
718e3744 152
73ac8160 153/* BGP route-map structure. */
d62a17ae 154struct bgp_rmap {
155 char *name;
156 struct route_map *map;
73ac8160
DS		 157};
158
d62a17ae 159struct bgp_redist {
d7c0a89a 160 unsigned short instance;
7c8ff89e 161
d62a17ae 162 /* BGP redistribute metric configuration. */
d7c0a89a
QY		 163 uint8_t redist_metric_flag;
164 uint32_t redist_metric;
7c8ff89e 165
d62a17ae 166 /* BGP redistribute route-map. */
167 struct bgp_rmap rmap;
7c8ff89e
DS		 168};
169
ddb5b488
PZ		 170typedef enum {
171 BGP_VPN_POLICY_DIR_FROMVPN = 0,
172 BGP_VPN_POLICY_DIR_TOVPN = 1,
173 BGP_VPN_POLICY_DIR_MAX = 2
174} vpn_policy_direction_t;
175
e70e9f8e
PZ		 176struct vpn_policy {
177 struct bgp *bgp; /* parent */
178 afi_t afi;
179 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
180 struct ecommunity *import_redirect_rtlist;
181 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
182 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
183
184 /* should be mpls_label_t? */
185 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
186 uint32_t tovpn_zebra_vrf_label_last_sent;
187 struct prefix_rd tovpn_rd;
188 struct prefix tovpn_nexthop; /* unset => set to 0 */
189 uint32_t flags;
190#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
191#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
192#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 193
1d4e8b0d
DS		 194 /*
195 * If we are importing another vrf into us keep a list of
196 * vrf names that are being imported into us.
197 */
12a844a5 198 struct list *import_vrf;
1d4e8b0d
DS		 199
200 /*
201 * if we are being exported to another vrf keep a list of
202 * vrf names that we are being exported to.
203 */
12a844a5 204 struct list *export_vrf;
e70e9f8e
PZ		 205};
206
ad4cbda1 207/*
208 * Type of 'struct bgp'.
209 * - Default: The default instance
210 * - VRF: A specific (non-default) VRF
211 * - View: An instance used for route exchange
212 * The "default" instance is treated separately to simplify the code. Note
213 * that if deployed in a Multi-VRF environment, it may not exist.
214 */
d62a17ae 215enum bgp_instance_type {
216 BGP_INSTANCE_TYPE_DEFAULT,
217 BGP_INSTANCE_TYPE_VRF,
218 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 219};
220
718e3744 221/* BGP instance structure. */
d62a17ae 222struct bgp {
223 /* AS number of this BGP instance. */
224 as_t as;
225
226 /* Name of this BGP instance. */
227 char *name;
3572fb26 228 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 229
230 /* Type of instance and VRF id. */
231 enum bgp_instance_type inst_type;
232 vrf_id_t vrf_id;
233
234 /* Reference count to allow peer_delete to finish after bgp_delete */
235 int lock;
236
237 /* Self peer. */
238 struct peer *peer_self;
239
240 /* BGP peer. */
241 struct list *peer;
242 struct hash *peerhash;
243
244 /* BGP peer group. */
245 struct list *group;
246
247 /* The maximum number of BGP dynamic neighbors that can be created */
248 int dynamic_neighbors_limit;
249
250 /* The current number of BGP dynamic neighbors */
251 int dynamic_neighbors_count;
252
253 struct hash *update_groups[BGP_AF_MAX];
254
255 /*
256 * Global statistics for update groups.
257 */
258 struct {
d7c0a89a
QY		 259 uint32_t join_events;
260 uint32_t prune_events;
261 uint32_t merge_events;
262 uint32_t split_events;
263 uint32_t updgrp_switch_events;
264 uint32_t peer_refreshes_combined;
265 uint32_t adj_count;
266 uint32_t merge_checks_triggered;
267
268 uint32_t updgrps_created;
269 uint32_t updgrps_deleted;
270 uint32_t subgrps_created;
271 uint32_t subgrps_deleted;
d62a17ae 272 } update_group_stats;
273
274 /* BGP configuration. */
d7c0a89a 275 uint16_t config;
c2d58d6d 276#define BGP_CONFIG_CLUSTER_ID (1 << 0)
277#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 278
d62a17ae 279 /* BGP router identifier. */
280 struct in_addr router_id;
281 struct in_addr router_id_static;
282 struct in_addr router_id_zebra;
718e3744 283
d62a17ae 284 /* BGP route reflector cluster ID. */
285 struct in_addr cluster_id;
718e3744 286
d62a17ae 287 /* BGP confederation information. */
288 as_t confed_id;
289 as_t *confed_peers;
290 int confed_peers_cnt;
718e3744 291
d62a17ae 292 struct thread
293 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 294
d7c0a89a 295 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 296#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY		 297 uint32_t maxmed_onstartup_value; /* Max-med value when active on
298 start-up */
d62a17ae 299 struct thread
300 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 301 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 302
d7c0a89a 303 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 304#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY		 305 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
306 */
abc920f8
DS		 307#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
308
d7c0a89a
QY		 309 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
310 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 311
312 /* BGP update delay on startup */
313 struct thread *t_update_delay;
314 struct thread *t_establish_wait;
d7c0a89a
QY		 315 uint8_t update_delay_over;
316 uint8_t main_zebra_update_hold;
317 uint8_t main_peers_update_hold;
318 uint16_t v_update_delay;
319 uint16_t v_establish_wait;
d62a17ae 320 char update_delay_begin_time[64];
321 char update_delay_end_time[64];
322 char update_delay_zebra_resume_time[64];
323 char update_delay_peers_resume_time[64];
d7c0a89a
QY		 324 uint32_t established;
325 uint32_t restarted_peers;
326 uint32_t implicit_eors;
327 uint32_t explicit_eors;
f188f2c4
DS		 328#define BGP_UPDATE_DELAY_DEF 0
329#define BGP_UPDATE_DELAY_MIN 0
330#define BGP_UPDATE_DELAY_MAX 3600
331
d62a17ae 332 /* BGP flags. */
d7c0a89a 333 uint32_t flags;
718e3744 334#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
335#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
336#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
337#define BGP_FLAG_MED_CONFED (1 << 3)
338#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
339#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
340#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
341#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
342#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
343#define BGP_FLAG_IMPORT_CHECK (1 << 9)
344#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 345#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 346#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 347#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 348#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 349#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 350#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 351#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 352#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 353#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 354#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 355#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 356
d62a17ae 357 /* BGP Per AF flags */
d7c0a89a 358 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 359#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 360/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK		 361#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
362#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
363#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
364#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
365/* import/export between address families */
366#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
367#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
368/* vrf-route leaking flags */
369#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
370#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
a8dadcf6 371#define BGP_DEFAULT_NAME "default"
154faa50 372
d62a17ae 373 /* Route table for next-hop lookup cache. */
374 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 375
d62a17ae 376 /* Route table for import-check */
377 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 378
d62a17ae 379 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 380
d62a17ae 381 struct hash *address_hash;
6aeb9e78 382
db0e1937
MK		 383 /* DB for all local tunnel-ips - used mainly for martian checks
384 Currently it only has all VxLan tunnel IPs*/
385 struct hash *tip_hash;
386
d62a17ae 387 /* Static route configuration. */
388 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 389
d62a17ae 390 /* Aggregate address configuration. */
391 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 392
d62a17ae 393 /* BGP routing information base. */
394 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 395
d62a17ae 396 /* BGP table route-map. */
397 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 398
d62a17ae 399 /* BGP redistribute configuration. */
400 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 401
318cac96 402 /* Allocate MPLS labels */
d7c0a89a 403 uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
318cac96 404
f3d32faa
PG		 405 /* Allocate hash entries to store policy routing information
406 * The hash are used to host pbr rules somewhere.
407 * Actually, pbr will only be used by flowspec
408 * those hash elements will have relationship together as
409 * illustrated in below diagram:
410 *
411 * pbr_action a <----- pbr_match i <--- pbr_match_entry 1..n
412 * <----- pbr_match j <--- pbr_match_entry 1..m
413 *
414 * - here in BGP structure, the list of match and actions will
415 * stand for the list of ipset sets, and table_ids in the kernel
416 * - the arrow above between pbr_match and pbr_action indicate
417 * that a backpointer permits match to find the action
418 * - the arrow betwen match_entry and match is a hash list
419 * contained in match, that lists the whole set of entries
420 */
421 struct hash *pbr_match_hash;
422 struct hash *pbr_action_hash;
423
d62a17ae 424 /* timer to re-evaluate neighbor default-originate route-maps */
425 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 426#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
427
d62a17ae 428 /* BGP distance configuration. */
d7c0a89a
QY		 429 uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
430 uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
431 uint8_t distance_local[AFI_MAX][SAFI_MAX];
d62a17ae 432
433 /* BGP default local-preference. */
d7c0a89a 434 uint32_t default_local_pref;
d62a17ae 435
436 /* BGP default subgroup pkt queue max */
d7c0a89a 437 uint32_t default_subgroup_pkt_queue_max;
d62a17ae 438
439 /* BGP default timer. */
d7c0a89a
QY		 440 uint32_t default_holdtime;
441 uint32_t default_keepalive;
d62a17ae 442
443 /* BGP graceful restart */
d7c0a89a
QY		 444 uint32_t restart_time;
445 uint32_t stalepath_time;
d62a17ae 446
447 /* Maximum-paths configuration */
448 struct bgp_maxpaths_cfg {
d7c0a89a
QY		 449 uint16_t maxpaths_ebgp;
450 uint16_t maxpaths_ibgp;
451 uint16_t ibgp_flags;
5e242b0d 452#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 453 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 454
555e09d4
QY		 455 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
456 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
457
37a333fe
QY		 458 /* Automatic coalesce adjust on/off */
459 bool heuristic_coalesce;
14b8641a
QY		 460 /* Actual coalesce time */
461 uint32_t coalesce_time;
adbac85e 462
f26845f9
QY		 463 /* Auto-shutdown new peers */
464 bool autoshutdown;
465
d7c0a89a 466 uint32_t addpath_tx_id;
d62a17ae 467 int addpath_tx_used[AFI_MAX][SAFI_MAX];
65efcfce
LB		 468
469#if ENABLE_BGP_VNC
d62a17ae 470 struct rfapi_cfg *rfapi_cfg;
471 struct rfapi *rfapi;
65efcfce 472#endif
19df7279 473
d62a17ae 474 /* EVPN related information */
14c1a7bf 475
d62a17ae 476 /* EVI hash table */
477 struct hash *vnihash;
14c1a7bf 478
1a98c087
MK		 479 /* EVPN enable - advertise gateway macip routes */
480 int advertise_gw_macip;
481
d62a17ae 482 /* EVPN enable - advertise local VNIs and their MACs etc. */
483 int advertise_all_vni;
14c1a7bf 484
bf1061d8
VB		 485 /* EVPN - use RFC 8365 to auto-derive RT */
486 int advertise_autort_rfc8365;
487
d62a17ae 488 /* Hash table of Import RTs to EVIs */
489 struct hash *import_rt_hash;
14c1a7bf 490
10ebe1ab
MK		 491 /* Hash table of VRF import RTs to VRFs */
492 struct hash *vrf_import_rt_hash;
493
fe1dc5a3
MK		 494 /* L3-VNI corresponding to this vrf */
495 vni_t l3vni;
496
497 /* router-mac to be used in mac-ip routes for this vrf */
498 struct ethaddr rmac;
499
b67a60d2 500 /* originator ip - to be used as NH for type-5 routes */
501 struct in_addr originator_ip;
502
fe1dc5a3
MK		 503 /* vrf flags */
504 uint32_t vrf_flags;
676f83b9 505#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 506#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
507#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
508#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK		 509#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
510
676f83b9 511
512 /* unique ID for auto derivation of RD for this vrf */
513 uint16_t vrf_rd_id;
514
92708db6 515 /* Automatically derived RD for this VRF */
516 struct prefix_rd vrf_prd_auto;
517
676f83b9 518 /* RD for this VRF */
519 struct prefix_rd vrf_prd;
c581d8b0
MK		 520
521 /* import rt list for the vrf instance */
522 struct list *vrf_import_rtl;
523
524 /* export rt list for the vrf instance */
525 struct list *vrf_export_rtl;
fe1dc5a3 526
6a8657d0
MK		 527 /* list of corresponding l2vnis (struct bgpevpn) */
528 struct list *l2vnis;
529
53c84f78
MK		 530 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
531 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
532
e70e9f8e 533 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 534
4762c213
PG		 535 struct bgp_pbr_config *bgp_pbr_cfg;
536
50f74cf1 537 /* local esi hash table */
538 struct hash *esihash;
539
d62a17ae 540 QOBJ_FIELDS
718e3744 541};
19df7279 542DECLARE_QOBJ_TYPE(bgp)
718e3744 543
2a3d5731 544#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 545
d62a17ae 546#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
547 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
548 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
549 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 550
718e3744 551/* BGP peer-group support. */
d62a17ae 552struct peer_group {
553 /* Name of the peer-group. */
554 char *name;
718e3744 555
d62a17ae 556 /* Pointer to BGP. */
557 struct bgp *bgp;
718e3744 558
d62a17ae 559 /* Peer-group client list. */
560 struct list *peer;
f14e6fdb 561
d62a17ae 562 /** Dynamic neighbor listening ranges */
563 struct list *listen_range[AFI_MAX];
564
565 /* Peer-group config */
566 struct peer *conf;
718e3744 567};
568
569/* BGP Notify message format. */
d62a17ae 570struct bgp_notify {
d7c0a89a
QY		 571 uint8_t code;
572 uint8_t subcode;
d62a17ae 573 char *data;
574 bgp_size_t length;
d7c0a89a 575 uint8_t *raw_data;
718e3744 576};
577
578/* Next hop self address. */
d62a17ae 579struct bgp_nexthop {
580 struct interface *ifp;
581 struct in_addr v4;
582 struct in6_addr v6_global;
583 struct in6_addr v6_local;
718e3744 584};
585
a82478b9
DS		 586/* BGP addpath values */
587#define BGP_ADDPATH_RX 1
588#define BGP_ADDPATH_TX 2
589#define BGP_ADDPATH_ID_LEN 4
590
adbac85e
DW		 591#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
592
3f54c705 593/* Route map direction */
2a3d5731
DW		 594#define RMAP_IN 0
595#define RMAP_OUT 1
596#define RMAP_MAX 2
fee0f4c6 597
65efcfce
LB		 598#include "filter.h"
599
718e3744 600/* BGP filter structure. */
d62a17ae 601struct bgp_filter {
602 /* Distribute-list. */
603 struct {
604 char *name;
605 struct access_list *alist;
606 } dlist[FILTER_MAX];
607
608 /* Prefix-list. */
609 struct {
610 char *name;
611 struct prefix_list *plist;
612 } plist[FILTER_MAX];
613
614 /* Filter-list. */
615 struct {
616 char *name;
617 struct as_list *aslist;
618 } aslist[FILTER_MAX];
619
620 /* Route-map. */
621 struct {
622 char *name;
623 struct route_map *map;
624 } map[RMAP_MAX];
625
626 /* Unsuppress-map. */
627 struct {
628 char *name;
629 struct route_map *map;
630 } usmap;
718e3744 631};
632
6d85b15b
JBD		 633/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
634 a peer who's AS is part of our Confederation. */
d62a17ae 635typedef enum {
636 BGP_PEER_IBGP = 1,
637 BGP_PEER_EBGP,
638 BGP_PEER_INTERNAL,
639 BGP_PEER_CONFED,
6d85b15b
JBD		 640} bgp_peer_sort_t;
641
d6661008
DS		 642/* BGP message header and packet size. */
643#define BGP_MARKER_SIZE 16
644#define BGP_HEADER_SIZE 19
645#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 646#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 647
3f9c7369
DS		 648/*
649 * Trigger delay for bgp_announce_route().
650 */
651#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
652#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
653
d62a17ae 654struct peer_af {
655 /* back pointer to the peer */
656 struct peer *peer;
3f9c7369 657
d62a17ae 658 /* which subgroup the peer_af belongs to */
659 struct update_subgroup *subgroup;
3f9c7369 660
d62a17ae 661 /* for being part of an update subgroup's peer list */
662 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 663
d62a17ae 664 /* for being part of a packet's peer list */
665 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 666
d62a17ae 667 struct bpacket *next_pkt_to_send;
3f9c7369 668
d62a17ae 669 /*
670 * Trigger timer for bgp_announce_route().
671 */
672 struct thread *t_announce_route;
3f9c7369 673
d62a17ae 674 afi_t afi;
675 safi_t safi;
676 int afid;
3f9c7369
DS		 677};
678
718e3744 679/* BGP neighbor structure. */
d62a17ae 680struct peer {
681 /* BGP structure. */
682 struct bgp *bgp;
683
684 /* reference count, primarily to allow bgp_process'ing of route_node's
685 * to be done after a struct peer is deleted.
686 *
687 * named 'lock' for hysterical reasons within Quagga.
688 */
689 int lock;
690
691 /* BGP peer group. */
692 struct peer_group *group;
693 uint64_t version[AFI_MAX][SAFI_MAX];
694
695 /* BGP peer_af structures, per configured AF on this peer */
696 struct peer_af *peer_af_array[BGP_AF_MAX];
697
698 /* Peer's remote AS number. */
699 int as_type;
700 as_t as;
701
702 /* Peer's local AS number. */
703 as_t local_as;
704
705 bgp_peer_sort_t sort;
706
707 /* Peer's Change local AS number. */
708 as_t change_local_as;
709
710 /* Remote router ID. */
711 struct in_addr remote_id;
712
713 /* Local router ID. */
714 struct in_addr local_id;
715
716 /* Packet receive and send buffer. */
424ab01d
QY		 717 pthread_mutex_t io_mtx; // guards ibuf, obuf
718 struct stream_fifo *ibuf; // packets waiting to be processed
719 struct stream_fifo *obuf; // packets waiting to be written
720
74ffbfe6
QY		 721 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
722 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 723
724 struct stream *curr; // the current packet being parsed
d62a17ae 725
726 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 727 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 728 * actual packet is then constructed by concatenating the two.
729 */
730 struct stream *scratch;
731
732 /* the doppelganger peer structure, due to dual TCP conn setup */
733 struct peer *doppelganger;
734
735 /* Status of the peer. */
736 int status;
737 int ostatus;
738
739 /* FSM events, stored for debug purposes.
740 * Note: uchar used for reduced memory usage.
741 */
742 unsigned char cur_event;
743 unsigned char last_event;
744 unsigned char last_major_event;
745
746 /* Peer index, used for dumping TABLE_DUMP_V2 format */
747 uint16_t table_dump_index;
748
749 /* Peer information */
750 int fd; /* File descriptor */
751 int ttl; /* TTL of TCP connection to the peer. */
752 int rtt; /* Estimated round-trip-time from TCP_INFO */
753 int gtsm_hops; /* minimum hopcount to peer */
754 char *desc; /* Description of the peer. */
755 unsigned short port; /* Destination port for peer */
756 char *host; /* Printable address of the peer. */
757 union sockunion su; /* Sockunion address of the peer. */
a80beece 758#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 759 time_t uptime; /* Last Up/Down time */
760 time_t readtime; /* Last read time */
761 time_t resettime; /* Last reset time */
762
d62a17ae 763 char *conf_if; /* neighbor interface config name. */
764 struct interface *ifp; /* corresponding interface */
765 char *ifname; /* bind interface name. */
766 char *update_if;
767 union sockunion *update_source;
768
769 union sockunion *su_local; /* Sockunion of local address. */
770 union sockunion *su_remote; /* Sockunion of remote address. */
771 int shared_network; /* Is this peer shared same network. */
772 struct bgp_nexthop nexthop; /* Nexthop */
773
774 /* Peer address family configuration. */
d7c0a89a
QY		 775 uint8_t afc[AFI_MAX][SAFI_MAX];
776 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
777 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
778 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 779
780 /* Capability flags (reset in bgp_stop) */
d7c0a89a 781 uint32_t cap;
718e3744 782#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
783#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
784#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
785#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
786#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 787#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
788#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 789#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
790#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 791#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
792#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 793#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
794#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 795#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
796#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 797#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
798#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 799
d62a17ae 800 /* Capability flags (reset in bgp_stop) */
d7c0a89a 801 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 802#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
803#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
804#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
805#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
806#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
807#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 808#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
809#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 810#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
811#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
812#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
813#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 814#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
815#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
816#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 817
d62a17ae 818 /* Global configuration flags. */
9fb964de
PM		 819 /*
820 * Parallel array to flags that indicates whether each flag originates
821 * from a peer-group or if it is config that is specific to this
822 * individual peer. If a flag is set independent of the peer-group, the
823 * same bit should be set here. If this peer is a peer-group, this
824 * memory region should be all zeros.
825 *
826 * The assumption is that the default state for all flags is unset,
827 * so if a flag is unset, the corresponding override flag is unset too.
828 * However if a flag is set, the corresponding override flag is set.
829 */
830 uint32_t flags_override;
831 /*
832 * Parallel array to flags that indicates whether the default behavior
833 * of *flags_override* should be inverted. If a flag is unset and the
834 * corresponding invert flag is set, the corresponding override flag
835 * would be set. However if a flag is set and the corresponding invert
836 * flag is unset, the corresponding override flag would be unset.
837 *
838 * This can be used for attributes like *send-community*, which are
839 * implicitely enabled and have to be disabled explicitely, compared to
840 * 'normal' attributes like *next-hop-self* which are implicitely set.
841 *
842 * All operations dealing with flags should apply the following boolean
843 * logic to keep the internal flag system in a sane state:
844 *
845 * value=0 invert=0 Inherit flag if member, otherwise unset flag
846 * value=0 invert=1 Unset flag unconditionally
847 * value=1 invert=0 Set flag unconditionally
848 * value=1 invert=1 Inherit flag if member, otherwise set flag
849 *
850 * Contrary to the implementation of *flags_override*, the flag
851 * inversion state can be set either on the peer OR the peer *and* the
852 * peer-group. This was done on purpose, as the inversion state of a
853 * flag can be determined on either the peer or the peer-group.
854 *
855 * Example: Enabling the cisco configuration mode inverts all flags
856 * related to *send-community* unconditionally for both peer-groups and
857 * peers.
858 *
859 * This behavior is different for interface peers though, which enable
860 * the *extended-nexthop* flag by default, which regular peers do not.
861 * As the peer-group can contain both regular and interface peers, the
862 * flag inversion state must be set on the peer only.
863 *
864 * When a peer inherits the configuration from a peer-group and the
865 * inversion state of the flag differs between peer and peer-group, the
866 * newly set value must equal to the inverted state of the peer-group.
867 */
868 uint32_t flags_invert;
869 /*
870 * Effective array for storing the peer/peer-group flags. In case of a
871 * peer-group, the peer-specific overrides (see flags_override and
872 * flags_invert) must be respected.
873 */
d7c0a89a 874 uint32_t flags;
718e3744 875#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
876#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
877#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
878#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
879#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 880#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 881#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 882#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 883#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
47cbc09b
PM		 884#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
885#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 886#define PEER_FLAG_LONESOUL (1 << 11)
887#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
888#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 889#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
47cbc09b
PM		 890#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
891#define PEER_FLAG_ENFORCE_FIRST_AS (1 << 16) /* enforce-first-as */
b90a8e13
PM		 892#define PEER_FLAG_ROUTEADV (1 << 17) /* route advertise */
893#define PEER_FLAG_TIMER (1 << 18) /* keepalive & holdtime */
894#define PEER_FLAG_TIMER_CONNECT (1 << 19) /* connect timer */
a14810f4
PM		 895#define PEER_FLAG_PASSWORD (1 << 20) /* password */
896#define PEER_FLAG_LOCAL_AS (1 << 21) /* local-as */
897#define PEER_FLAG_UPDATE_SOURCE (1 << 22) /* update-source */
02a82b47 898
d62a17ae 899 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
900 char *tx_shutdown_message;
718e3744 901
d62a17ae 902 /* NSF mode (graceful restart) */
d7c0a89a 903 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 904
04e1c5bb
QY		 905 /* Peer Per AF flags */
906 /*
9fb964de
PM		 907 * Please consult the comments for *flags_override*, *flags_invert* and
908 * *flags* to understand what these three arrays do. The address-family
909 * specific attributes are being treated the exact same way as global
910 * peer attributes.
04e1c5bb
QY		 911 */
912 uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
27c05d4d 913 uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
d7c0a89a 914 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 915#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
916#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
917#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
918#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
919#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
920#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
921#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
922#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
923#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
924#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
925#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
926#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
927#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
928#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
929#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
930#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 931#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 932#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 933#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
934#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 935#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 936#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 937#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 938#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
d93f7ffc 939#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 940#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 941#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 942
d62a17ae 943 /* MD5 password */
944 char *password;
718e3744 945
d62a17ae 946 /* default-originate route-map. */
947 struct {
948 char *name;
949 struct route_map *map;
950 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 951
d62a17ae 952 /* Peer status flags. */
d7c0a89a 953 uint16_t sflags;
718e3744 954#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
955#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
956#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
957#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
958#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 959#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
960#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 961
d62a17ae 962 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 963 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 964#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
965#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 966#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
967#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
968#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
969#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 970
b90a8e13 971 /* Configured timer values. */
1588f6f4
QY		 972 _Atomic uint32_t holdtime;
973 _Atomic uint32_t keepalive;
974 _Atomic uint32_t connect;
975 _Atomic uint32_t routeadv;
d62a17ae 976
977 /* Timer values. */
1588f6f4
QY		 978 _Atomic uint32_t v_start;
979 _Atomic uint32_t v_connect;
980 _Atomic uint32_t v_holdtime;
981 _Atomic uint32_t v_keepalive;
982 _Atomic uint32_t v_routeadv;
983 _Atomic uint32_t v_pmax_restart;
984 _Atomic uint32_t v_gr_restart;
d62a17ae 985
986 /* Threads. */
987 struct thread *t_read;
424ab01d 988 struct thread *t_write;
d62a17ae 989 struct thread *t_start;
387f984e
QY		 990 struct thread *t_connect_check_r;
991 struct thread *t_connect_check_w;
d62a17ae 992 struct thread *t_connect;
993 struct thread *t_holdtime;
d62a17ae 994 struct thread *t_routeadv;
995 struct thread *t_pmax_restart;
996 struct thread *t_gr_restart;
997 struct thread *t_gr_stale;
56257a44 998 struct thread *t_generate_updgrp_packets;
424ab01d 999 struct thread *t_process_packet;
d62a17ae 1000
49507a6f 1001 /* Thread flags. */
1588f6f4 1002 _Atomic uint16_t thread_flags;
b750b0ba
QY		 1003#define PEER_THREAD_WRITES_ON (1 << 0)
1004#define PEER_THREAD_READS_ON (1 << 1)
1005#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 1006 /* workqueues */
1007 struct work_queue *clear_node_queue;
1008
a4d82a8a
PZ		 1009#define PEER_TOTAL_RX(peer) \
1010 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
1011 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
1012 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
1013 + atomic_load_explicit(&peer->refresh_in, \
1014 memory_order_relaxed) \
1015 + atomic_load_explicit(&peer->keepalive_in, \
1016 memory_order_relaxed) \
1017 + atomic_load_explicit(&peer->dynamic_cap_in, \
1018 memory_order_relaxed)
1019
1020#define PEER_TOTAL_TX(peer) \
1021 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
1022 + atomic_load_explicit(&peer->update_out, \
1023 memory_order_relaxed) \
1024 + atomic_load_explicit(&peer->notify_out, \
1025 memory_order_relaxed) \
1026 + atomic_load_explicit(&peer->refresh_out, \
1027 memory_order_relaxed) \
1028 + atomic_load_explicit(&peer->keepalive_out, \
1029 memory_order_relaxed) \
1030 + atomic_load_explicit(&peer->dynamic_cap_out, \
1031 memory_order_relaxed)
0112e9e0 1032
d62a17ae 1033 /* Statistics field */
996c9314
LB		 1034 _Atomic uint32_t open_in; /* Open message input count */
1035 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 1036 _Atomic uint32_t update_in; /* Update message input count */
1037 _Atomic uint32_t update_out; /* Update message ouput count */
1038 _Atomic time_t update_time; /* Update message received time. */
1039 _Atomic uint32_t keepalive_in; /* Keepalive input count */
1040 _Atomic uint32_t keepalive_out; /* Keepalive output count */
1041 _Atomic uint32_t notify_in; /* Notify input count */
1042 _Atomic uint32_t notify_out; /* Notify output count */
1043 _Atomic uint32_t refresh_in; /* Route Refresh input count */
1044 _Atomic uint32_t refresh_out; /* Route Refresh output count */
1045 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 1046 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 1047
1048 /* BGP state count */
d7c0a89a
QY		 1049 uint32_t established; /* Established */
1050 uint32_t dropped; /* Dropped */
d62a17ae 1051
1052 /* Update delay related fields */
d7c0a89a 1053 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 1054 for EOR */
1055
1056 /* Syncronization list and time. */
1057 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
1058 time_t synctime;
1588f6f4
QY		 1059 /* timestamp when the last UPDATE msg was written */
1060 _Atomic time_t last_write;
1061 /* timestamp when the last msg was written */
1062 _Atomic time_t last_update;
d62a17ae 1063
1064 /* Send prefix count. */
1065 unsigned long scount[AFI_MAX][SAFI_MAX];
1066
d62a17ae 1067 /* Notify data. */
1068 struct bgp_notify notify;
1069
d62a17ae 1070 /* Filter structure. */
1071 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
1072
70ee29b4
PM		 1073 /*
1074 * Parallel array to filter that indicates whether each filter
1075 * originates from a peer-group or if it is config that is specific to
1076 * this individual peer. If a filter is set independent of the
1077 * peer-group the appropriate bit should be set here. If this peer is a
1078 * peer-group, this memory region should be all zeros. The assumption
1079 * is that the default state for all flags is unset. Due to filters
1080 * having a direction (e.g. in/out/...), this array has a third
1081 * dimension for storing the overrides independently per direction.
1082 *
1083 * Notes:
1084 * - if a filter for an individual peer is unset, the corresponding
1085 * override flag is unset and the peer is considered to be back in
1086 * sync with the peer-group.
1087 * - This does *not* contain the filter values, rather it contains
1088 * whether the filter in filter (struct bgp_filter) is peer-specific.
1089 */
1090 uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
1091 ? FILTER_MAX
1092 : RMAP_MAX];
1093#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
1094#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
1095#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
1096#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
1097#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
1098
d62a17ae 1099 /* ORF Prefix-list */
1100 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
1101
1102 /* Text description of last attribute rcvd */
1103 char rcvd_attr_str[BUFSIZ];
1104
1105 /* Track if we printed the attribute in debugs */
1106 int rcvd_attr_printed;
1107
1108 /* Prefix count. */
1109 unsigned long pcount[AFI_MAX][SAFI_MAX];
1110
1111 /* Max prefix count. */
1112 unsigned long pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY		 1113 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1114 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1115#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1116
d62a17ae 1117 /* allowas-in. */
1118 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1119
d62a17ae 1120 /* weight */
1121 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1122
d62a17ae 1123 /* peer reset cause */
1124 char last_reset;
e0701b79 1125#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1126#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1127#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1128#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1129#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1130#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1131#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1132#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1133#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1134#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1135#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1136#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1137#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1138#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1139#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1140#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1141#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1142#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1143#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1144#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1145#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1146#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1147#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1148#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 1149#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1150#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 1151 unsigned long last_reset_cause_size;
d7c0a89a 1152 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1153
d62a17ae 1154 /* The kind of route-map Flags.*/
d7c0a89a 1155 uint8_t rmap_type;
ac41b2a2 1156#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1157#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1158#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1159#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1160#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1161#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1162#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1163#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1164
d62a17ae 1165 /* peer specific BFD information */
1166 struct bfd_info *bfd_info;
04b6bdc0 1167
d62a17ae 1168 /* hostname and domainname advertised by host */
1169 char *hostname;
1170 char *domainname;
19df7279 1171
d62a17ae 1172 QOBJ_FIELDS
718e3744 1173};
19df7279 1174DECLARE_QOBJ_TYPE(peer)
718e3744 1175
598ce6bd 1176/* Inherit peer attribute from peer-group. */
e7103a96
PM		 1177#define PEER_ATTR_INHERIT(peer, group, attr) \
1178 ((peer)->attr = (group)->conf->attr)
1179#define PEER_STR_ATTR_INHERIT(peer, group, attr, mt) \
598ce6bd
PM		 1180 do { \
1181 if ((peer)->attr) \
1182 XFREE(mt, (peer)->attr); \
e7103a96
PM		 1183 if ((group)->conf->attr) \
1184 (peer)->attr = XSTRDUP(mt, (group)->conf->attr); \
598ce6bd
PM		 1185 else \
1186 (peer)->attr = NULL; \
1187 } while (0)
a14810f4
PM		 1188#define PEER_SU_ATTR_INHERIT(peer, group, attr) \
1189 do { \
1190 if ((peer)->attr) \
1191 sockunion_free((peer)->attr); \
1192 if ((group)->conf->attr) \
1193 (peer)->attr = sockunion_dup((group)->conf->attr); \
1194 else \
1195 (peer)->attr = NULL; \
1196 } while (0)
598ce6bd 1197
ad4cbda1 1198/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1199#define BGP_PEER_START_SUPPRESSED(P) \
1200 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1201 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1202
0df7c91f
PJ		 1203#define PEER_PASSWORD_MINLEN (1)
1204#define PEER_PASSWORD_MAXLEN (80)
1205
718e3744 1206/* This structure's member directly points incoming packet data
1207 stream. */
d62a17ae 1208struct bgp_nlri {
1209 /* AFI. */
a46a2e9b 1210 uint16_t afi; /* iana_afi_t */
718e3744 1211
d62a17ae 1212 /* SAFI. */
a46a2e9b 1213 uint8_t safi; /* iana_safi_t */
718e3744 1214
d62a17ae 1215 /* Pointer to NLRI byte stream. */
d7c0a89a 1216 uint8_t *nlri;
718e3744 1217
d62a17ae 1218 /* Length of whole NLRI. */
1219 bgp_size_t length;
718e3744 1220};
1221
1222/* BGP versions. */
1223#define BGP_VERSION_4 4
718e3744 1224
1225/* Default BGP port number. */
1226#define BGP_PORT_DEFAULT 179
1227
718e3744 1228/* BGP minimum message size. */
1229#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1230#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1231#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1232#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1233#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1234#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1235
1236/* BGP message types. */
1237#define BGP_MSG_OPEN 1
1238#define BGP_MSG_UPDATE 2
1239#define BGP_MSG_NOTIFY 3
1240#define BGP_MSG_KEEPALIVE 4
1241#define BGP_MSG_ROUTE_REFRESH_NEW 5
1242#define BGP_MSG_CAPABILITY 6
1243#define BGP_MSG_ROUTE_REFRESH_OLD 128
1244
1245/* BGP open optional parameter. */
1246#define BGP_OPEN_OPT_AUTH 1
1247#define BGP_OPEN_OPT_CAP 2
1248
1249/* BGP4 attribute type codes. */
1250#define BGP_ATTR_ORIGIN 1
1251#define BGP_ATTR_AS_PATH 2
1252#define BGP_ATTR_NEXT_HOP 3
1253#define BGP_ATTR_MULTI_EXIT_DISC 4
1254#define BGP_ATTR_LOCAL_PREF 5
1255#define BGP_ATTR_ATOMIC_AGGREGATE 6
1256#define BGP_ATTR_AGGREGATOR 7
1257#define BGP_ATTR_COMMUNITIES 8
1258#define BGP_ATTR_ORIGINATOR_ID 9
1259#define BGP_ATTR_CLUSTER_LIST 10
1260#define BGP_ATTR_DPA 11
1261#define BGP_ATTR_ADVERTISER 12
1262#define BGP_ATTR_RCID_PATH 13
1263#define BGP_ATTR_MP_REACH_NLRI 14
1264#define BGP_ATTR_MP_UNREACH_NLRI 15
1265#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1266#define BGP_ATTR_AS4_PATH 17
1267#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1268#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1269#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1270#define BGP_ATTR_ENCAP 23
57d187bc 1271#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1272#define BGP_ATTR_PREFIX_SID 40
1199e35e 1273#if ENABLE_BGP_VNC_ATTR
65efcfce
LB		 1274#define BGP_ATTR_VNC 255
1275#endif
718e3744 1276
1277/* BGP update origin. */
1278#define BGP_ORIGIN_IGP 0
1279#define BGP_ORIGIN_EGP 1
1280#define BGP_ORIGIN_INCOMPLETE 2
1281
1282/* BGP notify message codes. */
1283#define BGP_NOTIFY_HEADER_ERR 1
1284#define BGP_NOTIFY_OPEN_ERR 2
1285#define BGP_NOTIFY_UPDATE_ERR 3
1286#define BGP_NOTIFY_HOLD_ERR 4
1287#define BGP_NOTIFY_FSM_ERR 5
1288#define BGP_NOTIFY_CEASE 6
1289#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1290
4b4e07d2
DT		 1291#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1292
718e3744 1293/* BGP_NOTIFY_HEADER_ERR sub codes. */
1294#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1295#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1296#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1297
1298/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1299#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1300#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1301#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1302#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1303#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1304#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1305#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1306#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1307
1308/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1309#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1310#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1311#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1312#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1313#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1314#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1315#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1316#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1317#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1318#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1319#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1320
4b4e07d2 1321/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1322#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1323#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1324#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1325#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1326#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1327#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1328#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1329#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1330
1331/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1332#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1333#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1334#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1335
1336/* BGP finite state machine status. */
1337#define Idle 1
1338#define Connect 2
1339#define Active 3
1340#define OpenSent 4
1341#define OpenConfirm 5
1342#define Established 6
ca058a30
PJ		 1343#define Clearing 7
1344#define Deleted 8
1345#define BGP_STATUS_MAX 9
718e3744 1346
1347/* BGP finite state machine events. */
1348#define BGP_Start 1
1349#define BGP_Stop 2
1350#define TCP_connection_open 3
1351#define TCP_connection_closed 4
1352#define TCP_connection_open_failed 5
1353#define TCP_fatal_error 6
1354#define ConnectRetry_timer_expired 7
1355#define Hold_Timer_expired 8
1356#define KeepAlive_timer_expired 9
1357#define Receive_OPEN_message 10
1358#define Receive_KEEPALIVE_message 11
1359#define Receive_UPDATE_message 12
1360#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1361#define Clearing_Completed 14
1362#define BGP_EVENTS_MAX 15
718e3744 1363
1364/* BGP timers default value. */
8efe88ea 1365/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1366#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1367#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1368#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1369#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1370#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1371#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1372
1373/* BGP default local preference. */
1374#define BGP_DEFAULT_LOCAL_PREF 100
1375
7f323236
DW		 1376/* BGP local-preference to send when 'bgp graceful-shutdown'
1377 * is configured */
1378#define BGP_GSHUT_LOCAL_PREF 0
1379
3f9c7369
DS		 1380/* BGP default subgroup packet queue max . */
1381#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1382
538621f2 1383/* BGP graceful restart */
1384#define BGP_DEFAULT_RESTART_TIME 120
1385#define BGP_DEFAULT_STALEPATH_TIME 360
1386
718e3744 1387/* BGP uptime string length. */
1388#define BGP_UPTIME_LEN 25
1389
1390/* Default configuration settings for bgpd. */
1391#define BGP_VTY_PORT 2605
718e3744 1392#define BGP_DEFAULT_CONFIG "bgpd.conf"
1393
1394/* Check AS path loop when we send NLRI. */
1395/* #define BGP_SEND_ASPATH_CHECK */
1396
f14e6fdb
DS		 1397/* BGP Dynamic Neighbors feature */
1398#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1399#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1400#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1401
718e3744 1402/* Flag for peer_clear_soft(). */
d62a17ae 1403enum bgp_clear_type {
1404 BGP_CLEAR_SOFT_NONE,
1405 BGP_CLEAR_SOFT_OUT,
1406 BGP_CLEAR_SOFT_IN,
1407 BGP_CLEAR_SOFT_BOTH,
1408 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1409};
1410
1411/* Macros. */
424ab01d 1412#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1413#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1414#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1415 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1416
718e3744 1417/* BGP error codes. */
1418#define BGP_SUCCESS 0
1419#define BGP_ERR_INVALID_VALUE -1
1420#define BGP_ERR_INVALID_FLAG -2
1421#define BGP_ERR_INVALID_AS -3
1422#define BGP_ERR_INVALID_BGP -4
1423#define BGP_ERR_PEER_GROUP_MEMBER -5
1424#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1425#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1426#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1427#define BGP_ERR_PEER_GROUP_MISMATCH -9
1428#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1429#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1430#define BGP_ERR_AS_MISMATCH -12
1431#define BGP_ERR_PEER_FLAG_CONFLICT -13
1432#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1433#define BGP_ERR_PEER_FILTER_CONFLICT -15
1434#define BGP_ERR_NOT_INTERNAL_PEER -16
1435#define BGP_ERR_REMOVE_PRIVATE_AS -17
1436#define BGP_ERR_AF_UNCONFIGURED -18
1437#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1438#define BGP_ERR_INSTANCE_MISMATCH -20
1439#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1440#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1441#define BGP_ERR_TCPSIG_FAILED -23
1442#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1443#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1444#define BGP_ERR_NO_INTERFACE_CONFIG -26
1445#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1446#define BGP_ERR_AS_OVERRIDE -28
1447#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1448#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1449#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1450#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1451#define BGP_ERR_MAX -33
63fa10b5 1452#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1453#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1454
3f9c7369
DS		 1455/*
1456 * Enumeration of different policy kinds a peer can be configured with.
1457 */
d62a17ae 1458typedef enum {
1459 BGP_POLICY_ROUTE_MAP,
1460 BGP_POLICY_FILTER_LIST,
1461 BGP_POLICY_PREFIX_LIST,
1462 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1463} bgp_policy_type_e;
1464
718e3744 1465extern struct bgp_master *bm;
37fe7731 1466extern unsigned int multipath_num;
718e3744 1467
718e3744 1468/* Prototypes. */
d62a17ae 1469extern void bgp_terminate(void);
1470extern void bgp_reset(void);
1471extern time_t bgp_clock(void);
1472extern void bgp_zclient_reset(void);
d62a17ae 1473extern struct bgp *bgp_get_default(void);
1474extern struct bgp *bgp_lookup(as_t, const char *);
1475extern struct bgp *bgp_lookup_by_name(const char *);
1476extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1477extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1478extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1479extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1480extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1481extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1482extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1483extern struct peer_group *peer_group_get(struct bgp *, const char *);
1484extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1485 union sockunion *,
1486 struct peer_group *);
1487extern struct prefix *
1488peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1489extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1490 struct prefix *,
1491 struct prefix **);
1492extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1493 union sockunion *);
28066f4b
DS		 1494
1495/*
1496 * Peers are incredibly easy to memory leak
1497 * due to the various ways that they are actually used
1498 * Provide some functionality to debug locks and unlocks
1499 */
1500extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1501extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1502#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1503#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1504
d62a17ae 1505extern bgp_peer_sort_t peer_sort(struct peer *peer);
1506extern int peer_active(struct peer *);
1507extern int peer_active_nego(struct peer *);
1508extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1509extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1510 as_t, as_t, int, afi_t, safi_t,
1511 struct peer_group *);
1512extern struct peer *peer_create_accept(struct bgp *);
1513extern void peer_xfer_config(struct peer *dst, struct peer *src);
d7c0a89a 1514extern char *peer_uptime(time_t, char *, size_t, uint8_t, json_object *);
856ca177 1515
d62a17ae 1516extern int bgp_config_write(struct vty *);
6b0655a2 1517
d62a17ae 1518extern void bgp_master_init(struct thread_master *master);
718e3744 1519
b59e5b81 1520extern void bgp_init(unsigned short instance);
419dfe6a 1521extern void bgp_pthreads_run(void);
2d4ee774 1522extern void bgp_pthreads_finish(void);
d62a17ae 1523extern void bgp_route_map_init(void);
1524extern void bgp_session_reset(struct peer *);
718e3744 1525
d62a17ae 1526extern int bgp_option_set(int);
1527extern int bgp_option_unset(int);
1528extern int bgp_option_check(int);
718e3744 1529
d62a17ae 1530extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1531extern void bgp_instance_up(struct bgp *);
1532extern void bgp_instance_down(struct bgp *);
1533extern int bgp_delete(struct bgp *);
718e3744 1534
e5619c28
PG		 1535extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1536 vrf_id_t old_vrf_id, bool create);
1537
d62a17ae 1538extern int bgp_flag_set(struct bgp *, int);
1539extern int bgp_flag_unset(struct bgp *, int);
1540extern int bgp_flag_check(struct bgp *, int);
718e3744 1541
d62a17ae 1542extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1543extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1544
d62a17ae 1545extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1546extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1547
d62a17ae 1548extern int bgp_confederation_id_set(struct bgp *, as_t);
1549extern int bgp_confederation_id_unset(struct bgp *);
1550extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1551
d62a17ae 1552extern int bgp_confederation_peers_add(struct bgp *, as_t);
1553extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1554
d7c0a89a 1555extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime);
d62a17ae 1556extern int bgp_timers_unset(struct bgp *);
718e3744 1557
d7c0a89a 1558extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1559extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1560
d7c0a89a 1561extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1562extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1563
d62a17ae 1564extern int bgp_listen_limit_set(struct bgp *, int);
1565extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1566
d62a17ae 1567extern int bgp_update_delay_active(struct bgp *);
1568extern int bgp_update_delay_configured(struct bgp *);
318cac96 1569extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1570extern void peer_as_change(struct peer *, as_t, int);
1571extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1572 int, afi_t, safi_t);
1573extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1574extern int peer_delete(struct peer *peer);
1575extern int peer_group_delete(struct peer_group *);
1576extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1577extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1578
d62a17ae 1579extern int peer_activate(struct peer *, afi_t, safi_t);
1580extern int peer_deactivate(struct peer *, afi_t, safi_t);
1581extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1582
d62a17ae 1583extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1584 struct peer_group *, as_t *);
718e3744 1585
d7c0a89a
QY		 1586extern int peer_flag_set(struct peer *, uint32_t);
1587extern int peer_flag_unset(struct peer *, uint32_t);
9fb964de 1588extern void peer_flag_inherit(struct peer *peer, uint32_t flag);
718e3744 1589
d7c0a89a
QY		 1590extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1591extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1592extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
cf9ac8bf
PM		 1593extern void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi,
1594 uint32_t flag);
718e3744 1595
d62a17ae 1596extern int peer_ebgp_multihop_set(struct peer *, int);
1597extern int peer_ebgp_multihop_unset(struct peer *);
1598extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1599
d62a17ae 1600extern int peer_description_set(struct peer *, const char *);
1601extern int peer_description_unset(struct peer *);
718e3744 1602
d62a17ae 1603extern int peer_update_source_if_set(struct peer *, const char *);
1604extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1605extern int peer_update_source_unset(struct peer *);
718e3744 1606
d62a17ae 1607extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1608 const char *);
1609extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1610
d7c0a89a 1611extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1612extern int peer_port_unset(struct peer *);
718e3744 1613
d7c0a89a 1614extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1615extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1616
d7c0a89a
QY		 1617extern int peer_timers_set(struct peer *, uint32_t keepalive,
1618 uint32_t holdtime);
d62a17ae 1619extern int peer_timers_unset(struct peer *);
718e3744 1620
d7c0a89a 1621extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1622extern int peer_timers_connect_unset(struct peer *);
718e3744 1623
d7c0a89a 1624extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1625extern int peer_advertise_interval_unset(struct peer *);
718e3744 1626
d62a17ae 1627extern void peer_interface_set(struct peer *, const char *);
1628extern void peer_interface_unset(struct peer *);
718e3744 1629
d62a17ae 1630extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1631extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1632
d62a17ae 1633extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1634extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1635
d62a17ae 1636extern int peer_local_as_set(struct peer *, as_t, int, int);
1637extern int peer_local_as_unset(struct peer *);
718e3744 1638
d62a17ae 1639extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1640 const char *);
1641extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1642
d62a17ae 1643extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1644extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1645
d62a17ae 1646extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1647extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1648
d62a17ae 1649extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
0df7c91f 1650
d62a17ae 1651extern int peer_password_set(struct peer *, const char *);
1652extern int peer_password_unset(struct peer *);
0df7c91f 1653
d62a17ae 1654extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1655
d7c0a89a
QY		 1656extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1657 uint8_t, int, uint16_t);
d62a17ae 1658extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1659
d62a17ae 1660extern int peer_clear(struct peer *, struct listnode **);
1661extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1662
d62a17ae 1663extern int peer_ttl_security_hops_set(struct peer *, int);
1664extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1665
d62a17ae 1666extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1667extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1668
d62a17ae 1669extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1670extern void bgp_route_map_terminate(void);
16286195 1671
d62a17ae 1672extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1673
5c525538 1674extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1675 afi_t *afi, safi_t *safi);
1676extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1677 iana_afi_t *pkt_afi,
1678 iana_safi_t *pkt_safi);
9cabb64b 1679
d62a17ae 1680extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1681extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1682extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1683
ffd0c037 1684extern void bgp_close(void);
92375c91
JB		 1685extern void bgp_free(struct bgp *);
1686
1687static inline struct bgp *bgp_lock(struct bgp *bgp)
1688{
1689 bgp->lock++;
1690 return bgp;
1691}
1692
1693static inline void bgp_unlock(struct bgp *bgp)
1694{
1695 assert(bgp->lock > 0);
1696 if (--bgp->lock == 0)
1697 bgp_free(bgp);
1698}
ffd0c037 1699
d62a17ae 1700static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1701{
d62a17ae 1702 switch (afi) {
1703 case AFI_IP:
1704 switch (safi) {
1705 case SAFI_UNICAST:
1706 return BGP_AF_IPV4_UNICAST;
1707 break;
1708 case SAFI_MULTICAST:
1709 return BGP_AF_IPV4_MULTICAST;
1710 break;
1711 case SAFI_LABELED_UNICAST:
1712 return BGP_AF_IPV4_LBL_UNICAST;
1713 break;
1714 case SAFI_MPLS_VPN:
1715 return BGP_AF_IPV4_VPN;
1716 break;
1717 case SAFI_ENCAP:
1718 return BGP_AF_IPV4_ENCAP;
1719 break;
7c40bf39 1720 case SAFI_FLOWSPEC:
1721 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1722 default:
1723 return BGP_AF_MAX;
1724 break;
1725 }
1726 break;
1727 case AFI_IP6:
1728 switch (safi) {
1729 case SAFI_UNICAST:
1730 return BGP_AF_IPV6_UNICAST;
1731 break;
1732 case SAFI_MULTICAST:
1733 return BGP_AF_IPV6_MULTICAST;
1734 break;
1735 case SAFI_LABELED_UNICAST:
1736 return BGP_AF_IPV6_LBL_UNICAST;
1737 break;
1738 case SAFI_MPLS_VPN:
1739 return BGP_AF_IPV6_VPN;
1740 break;
1741 case SAFI_ENCAP:
1742 return BGP_AF_IPV6_ENCAP;
1743 break;
7c40bf39 1744 case SAFI_FLOWSPEC:
1745 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1746 default:
1747 return BGP_AF_MAX;
1748 break;
1749 }
1750 break;
1751 case AFI_L2VPN:
1752 switch (safi) {
1753 case SAFI_EVPN:
1754 return BGP_AF_L2VPN_EVPN;
1755 break;
1756 default:
1757 return BGP_AF_MAX;
1758 break;
1759 }
3f9c7369 1760 default:
d62a17ae 1761 return BGP_AF_MAX;
1762 break;
3f9c7369 1763 }
3f9c7369
DS		 1764}
1765
c8560b44 1766/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1767static inline int peer_group_active(struct peer *peer)
3f9c7369 1768{
d62a17ae 1769 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1770 return 1;
1771 return 0;
3f9c7369
DS		 1772}
1773
1774/* If peer is negotiated at least one address family return 1. */
d62a17ae 1775static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1776{
d62a17ae 1777 if (peer->afc_nego[afi][SAFI_UNICAST]
1778 || peer->afc_nego[afi][SAFI_MULTICAST]
1779 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1780 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1781 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1782 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1783 || peer->afc_nego[afi][SAFI_EVPN])
1784 return 1;
1785 return 0;
3f9c7369
DS		 1786}
1787
f14e6fdb 1788/* If at least one address family activated for group, return 1. */
d62a17ae 1789static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1790{
d62a17ae 1791 struct peer *peer = group->conf;
1792
1793 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1794 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 1795 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 1796 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1797 || peer->afc[AFI_IP6][SAFI_UNICAST]
1798 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1799 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1800 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1801 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 1802 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 1803 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1804 return 1;
1805 return 0;
f14e6fdb
DS		 1806}
1807
d62a17ae 1808static inline char *timestamp_string(time_t ts)
3f9c7369 1809{
d62a17ae 1810 time_t tbuf;
1811 tbuf = time(NULL) - (bgp_clock() - ts);
1812 return ctime(&tbuf);
3f9c7369
DS		 1813}
1814
d62a17ae 1815static inline int peer_established(struct peer *peer)
3f9c7369 1816{
d62a17ae 1817 if (peer->status == Established)
1818 return 1;
1819 return 0;
3f9c7369
DS		 1820}
1821
d62a17ae 1822static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1823{
d62a17ae 1824 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1825}
1826
d62a17ae 1827static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1828{
d62a17ae 1829 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1830}
1831
d1be1f08 1832/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1833static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1834{
d62a17ae 1835 struct vrf *vrf;
d1be1f08 1836
d62a17ae 1837 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1838 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1839 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1840 vrf = vrf_lookup_by_name(bgp->name);
1841 else
1842 vrf = NULL;
d1be1f08 1843
d62a17ae 1844 return vrf;
d1be1f08 1845}
1846
1847/* Link BGP instance to VRF. */
d62a17ae 1848static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1849{
d62a17ae 1850 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1851 if (vrf->info != (void *)bgp)
1852 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1853}
1854
1855/* Unlink BGP instance from VRF. */
d62a17ae 1856static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1857{
d62a17ae 1858 if (vrf->info == (void *)bgp) {
1859 vrf->info = NULL;
1860 bgp_unlock(bgp);
1861 }
1862 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1863}
1864
d62a17ae 1865extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1866
1867/* For benefit of rfapi */
d62a17ae 1868extern struct peer *peer_new(struct bgp *bgp);
65efcfce 1869
00d252cb 1870#endif /* _QUAGGA_BGPD_H */
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