]> git.proxmox.com Git - mirror_frr.git/blame - bgpd/bgpd.h
Merge pull request #3295 from pguibert6WIND/ospf_area_unconfigure
[mirror_frr.git] / bgpd / bgpd.h
CommitLineData
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
1ac267a2 27#include "frr_pthread.h"
856ca177 28#include "lib/json.h"
6aeb9e78 29#include "vrf.h"
94c60424 30#include "vty.h"
6aeb9e78 31
718e3744 32/* For union sockunion. */
3f9c7369 33#include "queue.h"
718e3744 34#include "sockunion.h"
518f0eb1 35#include "routemap.h"
ffd0c037 36#include "linklist.h"
8efe88ea 37#include "defaults.h"
4a1ab8e4 38#include "bgp_memory.h"
14c1a7bf 39#include "bitfield.h"
fe1dc5a3 40#include "vxlan.h"
955bfd98 41#include "bgp_labelpool.h"
dcc68b5e 42#include "bgp_addpath_types.h"
718e3744 43
04b6bdc0 44#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 45#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 46
5c81b96a 47/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
48#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
49
3f9c7369
DS
50struct update_subgroup;
51struct bpacket;
4762c213 52struct bgp_pbr_config;
3f9c7369 53
0299c004
DS
54/*
55 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 56 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
57 * behavior
0299c004
DS
58 * in the system.
59 */
d62a17ae 60enum { AS_UNSPECIFIED = 0,
61 AS_SPECIFIED,
62 AS_INTERNAL,
63 AS_EXTERNAL,
0299c004
DS
64};
65
718e3744 66/* Typedef BGP specific types. */
d7c0a89a
QY
67typedef uint32_t as_t;
68typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
69typedef uint16_t bgp_size_t;
718e3744 70
d62a17ae 71#define max(a, b) \
72 ({ \
73 __typeof__(a) _a = (a); \
74 __typeof__(b) _b = (b); \
75 _a > _b ? _a : _b; \
76 })
77
78enum bgp_af_index {
79 BGP_AF_START,
80 BGP_AF_IPV4_UNICAST = BGP_AF_START,
81 BGP_AF_IPV4_MULTICAST,
82 BGP_AF_IPV4_VPN,
83 BGP_AF_IPV6_UNICAST,
84 BGP_AF_IPV6_MULTICAST,
85 BGP_AF_IPV6_VPN,
86 BGP_AF_IPV4_ENCAP,
87 BGP_AF_IPV6_ENCAP,
88 BGP_AF_L2VPN_EVPN,
89 BGP_AF_IPV4_LBL_UNICAST,
90 BGP_AF_IPV6_LBL_UNICAST,
7c40bf39 91 BGP_AF_IPV4_FLOWSPEC,
92 BGP_AF_IPV6_FLOWSPEC,
d62a17ae 93 BGP_AF_MAX
3f9c7369
DS
94};
95
d62a17ae 96#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 97
d62a17ae 98#define FOREACH_AFI_SAFI(afi, safi) \
99 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
100 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 101
1ac267a2
DL
102extern struct frr_pthread *bgp_pth_io;
103extern struct frr_pthread *bgp_pth_ka;
104
718e3744 105/* BGP master for system wide configurations and variables. */
d62a17ae 106struct bgp_master {
107 /* BGP instance list. */
108 struct list *bgp;
109
110 /* BGP thread master. */
111 struct thread_master *master;
718e3744 112
d62a17ae 113 /* work queues */
114 struct work_queue *process_main_queue;
87d4a781 115
d62a17ae 116 /* Listening sockets */
117 struct list *listen_sockets;
718e3744 118
d62a17ae 119 /* BGP port number. */
d7c0a89a 120 uint16_t port;
3a02d1f7 121
d62a17ae 122 /* Listener address */
123 char *address;
718e3744 124
d62a17ae 125 /* BGP start time. */
126 time_t start_time;
127
128 /* Various BGP global configuration. */
d7c0a89a 129 uint8_t options;
718e3744 130#define BGP_OPT_NO_FIB (1 << 0)
131#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
132#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 133#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369 134
d62a17ae 135 uint64_t updgrp_idspace;
136 uint64_t subgrp_idspace;
5fe9f963 137
d62a17ae 138 /* timer to dampen route map changes */
139 struct thread *t_rmap_update; /* Handle route map updates */
d7c0a89a 140 uint32_t rmap_update_timer; /* Route map update timer */
5fe9f963 141#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 142
e9eb5f63 143 /* Id space for automatic RD derivation for an EVI/VRF */
144 bitfield_t rd_idspace;
145
955bfd98
PZ
146 /* dynamic mpls label allocation pool */
147 struct labelpool labelpool;
148
97b4a0ec 149 bool terminating; /* global flag that sigint terminate seen */
d62a17ae 150 QOBJ_FIELDS
718e3744 151};
19df7279 152DECLARE_QOBJ_TYPE(bgp_master)
718e3744 153
73ac8160 154/* BGP route-map structure. */
d62a17ae 155struct bgp_rmap {
156 char *name;
157 struct route_map *map;
73ac8160
DS
158};
159
d62a17ae 160struct bgp_redist {
d7c0a89a 161 unsigned short instance;
7c8ff89e 162
d62a17ae 163 /* BGP redistribute metric configuration. */
d7c0a89a
QY
164 uint8_t redist_metric_flag;
165 uint32_t redist_metric;
7c8ff89e 166
d62a17ae 167 /* BGP redistribute route-map. */
168 struct bgp_rmap rmap;
7c8ff89e
DS
169};
170
ddb5b488
PZ
171typedef enum {
172 BGP_VPN_POLICY_DIR_FROMVPN = 0,
173 BGP_VPN_POLICY_DIR_TOVPN = 1,
174 BGP_VPN_POLICY_DIR_MAX = 2
175} vpn_policy_direction_t;
176
e70e9f8e
PZ
177struct vpn_policy {
178 struct bgp *bgp; /* parent */
179 afi_t afi;
180 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
181 struct ecommunity *import_redirect_rtlist;
182 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
183 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
184
185 /* should be mpls_label_t? */
186 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
187 uint32_t tovpn_zebra_vrf_label_last_sent;
188 struct prefix_rd tovpn_rd;
189 struct prefix tovpn_nexthop; /* unset => set to 0 */
190 uint32_t flags;
191#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
192#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
193#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 194
1d4e8b0d
DS
195 /*
196 * If we are importing another vrf into us keep a list of
197 * vrf names that are being imported into us.
198 */
12a844a5 199 struct list *import_vrf;
1d4e8b0d
DS
200
201 /*
202 * if we are being exported to another vrf keep a list of
203 * vrf names that we are being exported to.
204 */
12a844a5 205 struct list *export_vrf;
e70e9f8e
PZ
206};
207
ad4cbda1 208/*
209 * Type of 'struct bgp'.
210 * - Default: The default instance
211 * - VRF: A specific (non-default) VRF
212 * - View: An instance used for route exchange
213 * The "default" instance is treated separately to simplify the code. Note
214 * that if deployed in a Multi-VRF environment, it may not exist.
215 */
d62a17ae 216enum bgp_instance_type {
217 BGP_INSTANCE_TYPE_DEFAULT,
218 BGP_INSTANCE_TYPE_VRF,
219 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 220};
221
718e3744 222/* BGP instance structure. */
d62a17ae 223struct bgp {
224 /* AS number of this BGP instance. */
225 as_t as;
226
227 /* Name of this BGP instance. */
228 char *name;
3572fb26 229 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 230
231 /* Type of instance and VRF id. */
232 enum bgp_instance_type inst_type;
233 vrf_id_t vrf_id;
234
235 /* Reference count to allow peer_delete to finish after bgp_delete */
236 int lock;
237
238 /* Self peer. */
239 struct peer *peer_self;
240
241 /* BGP peer. */
242 struct list *peer;
243 struct hash *peerhash;
244
245 /* BGP peer group. */
246 struct list *group;
247
248 /* The maximum number of BGP dynamic neighbors that can be created */
249 int dynamic_neighbors_limit;
250
251 /* The current number of BGP dynamic neighbors */
252 int dynamic_neighbors_count;
253
254 struct hash *update_groups[BGP_AF_MAX];
255
256 /*
257 * Global statistics for update groups.
258 */
259 struct {
d7c0a89a
QY
260 uint32_t join_events;
261 uint32_t prune_events;
262 uint32_t merge_events;
263 uint32_t split_events;
264 uint32_t updgrp_switch_events;
265 uint32_t peer_refreshes_combined;
266 uint32_t adj_count;
267 uint32_t merge_checks_triggered;
268
269 uint32_t updgrps_created;
270 uint32_t updgrps_deleted;
271 uint32_t subgrps_created;
272 uint32_t subgrps_deleted;
d62a17ae 273 } update_group_stats;
274
275 /* BGP configuration. */
d7c0a89a 276 uint16_t config;
c2d58d6d 277#define BGP_CONFIG_CLUSTER_ID (1 << 0)
278#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 279
d62a17ae 280 /* BGP router identifier. */
281 struct in_addr router_id;
282 struct in_addr router_id_static;
283 struct in_addr router_id_zebra;
718e3744 284
d62a17ae 285 /* BGP route reflector cluster ID. */
286 struct in_addr cluster_id;
718e3744 287
d62a17ae 288 /* BGP confederation information. */
289 as_t confed_id;
290 as_t *confed_peers;
291 int confed_peers_cnt;
718e3744 292
d62a17ae 293 struct thread
294 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 295
d7c0a89a 296 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 297#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY
298 uint32_t maxmed_onstartup_value; /* Max-med value when active on
299 start-up */
d62a17ae 300 struct thread
301 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 302 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 303
d7c0a89a 304 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 305#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY
306 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
307 */
abc920f8
DS
308#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
309
d7c0a89a
QY
310 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
311 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 312
313 /* BGP update delay on startup */
314 struct thread *t_update_delay;
315 struct thread *t_establish_wait;
d7c0a89a
QY
316 uint8_t update_delay_over;
317 uint8_t main_zebra_update_hold;
318 uint8_t main_peers_update_hold;
319 uint16_t v_update_delay;
320 uint16_t v_establish_wait;
d62a17ae 321 char update_delay_begin_time[64];
322 char update_delay_end_time[64];
323 char update_delay_zebra_resume_time[64];
324 char update_delay_peers_resume_time[64];
d7c0a89a
QY
325 uint32_t established;
326 uint32_t restarted_peers;
327 uint32_t implicit_eors;
328 uint32_t explicit_eors;
f188f2c4
DS
329#define BGP_UPDATE_DELAY_DEF 0
330#define BGP_UPDATE_DELAY_MIN 0
331#define BGP_UPDATE_DELAY_MAX 3600
332
d62a17ae 333 /* BGP flags. */
d7c0a89a 334 uint32_t flags;
718e3744 335#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
336#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
337#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
338#define BGP_FLAG_MED_CONFED (1 << 3)
339#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
340#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
341#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
342#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
343#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
344#define BGP_FLAG_IMPORT_CHECK (1 << 9)
345#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 346#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 347#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 348#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 349#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 350#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 351#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 352#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 353#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 354#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 355#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 356#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 357
d62a17ae 358 /* BGP Per AF flags */
d7c0a89a 359 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 360#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 361/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK
362#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
363#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
364#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
365#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
366/* import/export between address families */
367#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
368#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
369/* vrf-route leaking flags */
370#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
371#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
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
dcc68b5e 466 struct bgp_addpath_bgp_data tx_addpath;
65efcfce
LB
467
468#if ENABLE_BGP_VNC
d62a17ae 469 struct rfapi_cfg *rfapi_cfg;
470 struct rfapi *rfapi;
65efcfce 471#endif
19df7279 472
d62a17ae 473 /* EVPN related information */
14c1a7bf 474
d62a17ae 475 /* EVI hash table */
476 struct hash *vnihash;
14c1a7bf 477
1a98c087
MK
478 /* EVPN enable - advertise gateway macip routes */
479 int advertise_gw_macip;
480
d62a17ae 481 /* EVPN enable - advertise local VNIs and their MACs etc. */
482 int advertise_all_vni;
14c1a7bf 483
bf1061d8
VB
484 /* EVPN - use RFC 8365 to auto-derive RT */
485 int advertise_autort_rfc8365;
486
fd069644
DS
487 /*
488 * Flooding mechanism for BUM packets for VxLAN-EVPN.
489 */
490 enum vxlan_flood_control vxlan_flood_ctrl;
491
d62a17ae 492 /* Hash table of Import RTs to EVIs */
493 struct hash *import_rt_hash;
14c1a7bf 494
10ebe1ab
MK
495 /* Hash table of VRF import RTs to VRFs */
496 struct hash *vrf_import_rt_hash;
497
fe1dc5a3
MK
498 /* L3-VNI corresponding to this vrf */
499 vni_t l3vni;
500
501 /* router-mac to be used in mac-ip routes for this vrf */
502 struct ethaddr rmac;
503
b67a60d2 504 /* originator ip - to be used as NH for type-5 routes */
505 struct in_addr originator_ip;
506
fe1dc5a3
MK
507 /* vrf flags */
508 uint32_t vrf_flags;
676f83b9 509#define BGP_VRF_AUTO (1 << 0)
154faa50
MK
510#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
511#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
512#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK
513#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
514
676f83b9 515
516 /* unique ID for auto derivation of RD for this vrf */
517 uint16_t vrf_rd_id;
518
92708db6 519 /* Automatically derived RD for this VRF */
520 struct prefix_rd vrf_prd_auto;
521
676f83b9 522 /* RD for this VRF */
523 struct prefix_rd vrf_prd;
c581d8b0
MK
524
525 /* import rt list for the vrf instance */
526 struct list *vrf_import_rtl;
527
528 /* export rt list for the vrf instance */
529 struct list *vrf_export_rtl;
fe1dc5a3 530
6a8657d0
MK
531 /* list of corresponding l2vnis (struct bgpevpn) */
532 struct list *l2vnis;
533
53c84f78
MK
534 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
535 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
536
e70e9f8e 537 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 538
4762c213
PG
539 struct bgp_pbr_config *bgp_pbr_cfg;
540
50f74cf1 541 /* local esi hash table */
542 struct hash *esihash;
543
d62a17ae 544 QOBJ_FIELDS
718e3744 545};
19df7279 546DECLARE_QOBJ_TYPE(bgp)
718e3744 547
2a3d5731 548#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 549
d62a17ae 550#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
551 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
552 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
553 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 554
718e3744 555/* BGP peer-group support. */
d62a17ae 556struct peer_group {
557 /* Name of the peer-group. */
558 char *name;
718e3744 559
d62a17ae 560 /* Pointer to BGP. */
561 struct bgp *bgp;
718e3744 562
d62a17ae 563 /* Peer-group client list. */
564 struct list *peer;
f14e6fdb 565
d62a17ae 566 /** Dynamic neighbor listening ranges */
567 struct list *listen_range[AFI_MAX];
568
569 /* Peer-group config */
570 struct peer *conf;
718e3744 571};
572
573/* BGP Notify message format. */
d62a17ae 574struct bgp_notify {
d7c0a89a
QY
575 uint8_t code;
576 uint8_t subcode;
d62a17ae 577 char *data;
578 bgp_size_t length;
d7c0a89a 579 uint8_t *raw_data;
718e3744 580};
581
582/* Next hop self address. */
d62a17ae 583struct bgp_nexthop {
584 struct interface *ifp;
585 struct in_addr v4;
586 struct in6_addr v6_global;
587 struct in6_addr v6_local;
718e3744 588};
589
a82478b9
DS
590/* BGP addpath values */
591#define BGP_ADDPATH_RX 1
592#define BGP_ADDPATH_TX 2
593#define BGP_ADDPATH_ID_LEN 4
594
adbac85e
DW
595#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
596
3f54c705 597/* Route map direction */
2a3d5731
DW
598#define RMAP_IN 0
599#define RMAP_OUT 1
600#define RMAP_MAX 2
fee0f4c6 601
65efcfce
LB
602#include "filter.h"
603
718e3744 604/* BGP filter structure. */
d62a17ae 605struct bgp_filter {
606 /* Distribute-list. */
607 struct {
608 char *name;
609 struct access_list *alist;
610 } dlist[FILTER_MAX];
611
612 /* Prefix-list. */
613 struct {
614 char *name;
615 struct prefix_list *plist;
616 } plist[FILTER_MAX];
617
618 /* Filter-list. */
619 struct {
620 char *name;
621 struct as_list *aslist;
622 } aslist[FILTER_MAX];
623
624 /* Route-map. */
625 struct {
626 char *name;
627 struct route_map *map;
628 } map[RMAP_MAX];
629
630 /* Unsuppress-map. */
631 struct {
632 char *name;
633 struct route_map *map;
634 } usmap;
718e3744 635};
636
6d85b15b
JBD
637/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
638 a peer who's AS is part of our Confederation. */
d62a17ae 639typedef enum {
640 BGP_PEER_IBGP = 1,
641 BGP_PEER_EBGP,
642 BGP_PEER_INTERNAL,
643 BGP_PEER_CONFED,
6d85b15b
JBD
644} bgp_peer_sort_t;
645
d6661008
DS
646/* BGP message header and packet size. */
647#define BGP_MARKER_SIZE 16
648#define BGP_HEADER_SIZE 19
649#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 650#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 651
3f9c7369
DS
652/*
653 * Trigger delay for bgp_announce_route().
654 */
655#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
656#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
657
d62a17ae 658struct peer_af {
659 /* back pointer to the peer */
660 struct peer *peer;
3f9c7369 661
d62a17ae 662 /* which subgroup the peer_af belongs to */
663 struct update_subgroup *subgroup;
3f9c7369 664
d62a17ae 665 /* for being part of an update subgroup's peer list */
666 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 667
d62a17ae 668 /* for being part of a packet's peer list */
669 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 670
d62a17ae 671 struct bpacket *next_pkt_to_send;
3f9c7369 672
d62a17ae 673 /*
674 * Trigger timer for bgp_announce_route().
675 */
676 struct thread *t_announce_route;
3f9c7369 677
d62a17ae 678 afi_t afi;
679 safi_t safi;
680 int afid;
3f9c7369
DS
681};
682
718e3744 683/* BGP neighbor structure. */
d62a17ae 684struct peer {
685 /* BGP structure. */
686 struct bgp *bgp;
687
688 /* reference count, primarily to allow bgp_process'ing of route_node's
689 * to be done after a struct peer is deleted.
690 *
691 * named 'lock' for hysterical reasons within Quagga.
692 */
693 int lock;
694
695 /* BGP peer group. */
696 struct peer_group *group;
697 uint64_t version[AFI_MAX][SAFI_MAX];
698
699 /* BGP peer_af structures, per configured AF on this peer */
700 struct peer_af *peer_af_array[BGP_AF_MAX];
701
702 /* Peer's remote AS number. */
703 int as_type;
704 as_t as;
705
706 /* Peer's local AS number. */
707 as_t local_as;
708
709 bgp_peer_sort_t sort;
710
711 /* Peer's Change local AS number. */
712 as_t change_local_as;
713
714 /* Remote router ID. */
715 struct in_addr remote_id;
716
717 /* Local router ID. */
718 struct in_addr local_id;
719
720 /* Packet receive and send buffer. */
424ab01d
QY
721 pthread_mutex_t io_mtx; // guards ibuf, obuf
722 struct stream_fifo *ibuf; // packets waiting to be processed
723 struct stream_fifo *obuf; // packets waiting to be written
724
74ffbfe6
QY
725 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
726 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY
727
728 struct stream *curr; // the current packet being parsed
d62a17ae 729
730 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 731 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 732 * actual packet is then constructed by concatenating the two.
733 */
734 struct stream *scratch;
735
736 /* the doppelganger peer structure, due to dual TCP conn setup */
737 struct peer *doppelganger;
738
739 /* Status of the peer. */
740 int status;
741 int ostatus;
742
743 /* FSM events, stored for debug purposes.
744 * Note: uchar used for reduced memory usage.
745 */
746 unsigned char cur_event;
747 unsigned char last_event;
748 unsigned char last_major_event;
749
750 /* Peer index, used for dumping TABLE_DUMP_V2 format */
751 uint16_t table_dump_index;
752
753 /* Peer information */
754 int fd; /* File descriptor */
755 int ttl; /* TTL of TCP connection to the peer. */
756 int rtt; /* Estimated round-trip-time from TCP_INFO */
757 int gtsm_hops; /* minimum hopcount to peer */
758 char *desc; /* Description of the peer. */
759 unsigned short port; /* Destination port for peer */
760 char *host; /* Printable address of the peer. */
761 union sockunion su; /* Sockunion address of the peer. */
a80beece 762#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 763 time_t uptime; /* Last Up/Down time */
764 time_t readtime; /* Last read time */
765 time_t resettime; /* Last reset time */
766
d62a17ae 767 char *conf_if; /* neighbor interface config name. */
768 struct interface *ifp; /* corresponding interface */
769 char *ifname; /* bind interface name. */
770 char *update_if;
771 union sockunion *update_source;
772
773 union sockunion *su_local; /* Sockunion of local address. */
774 union sockunion *su_remote; /* Sockunion of remote address. */
775 int shared_network; /* Is this peer shared same network. */
776 struct bgp_nexthop nexthop; /* Nexthop */
777
778 /* Peer address family configuration. */
d7c0a89a
QY
779 uint8_t afc[AFI_MAX][SAFI_MAX];
780 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
781 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
782 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 783
784 /* Capability flags (reset in bgp_stop) */
d7c0a89a 785 uint32_t cap;
718e3744 786#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
787#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
788#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
789#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
790#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 791#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
792#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ
793#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
794#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS
795#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
796#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS
797#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
798#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS
799#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
800#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW
801#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
802#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 803
d62a17ae 804 /* Capability flags (reset in bgp_stop) */
d7c0a89a 805 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 806#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
807#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
808#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
809#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
810#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
811#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 812#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
813#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS
814#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
815#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
816#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
817#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS
818#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
819#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
820#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 821
d62a17ae 822 /* Global configuration flags. */
9fb964de
PM
823 /*
824 * Parallel array to flags that indicates whether each flag originates
825 * from a peer-group or if it is config that is specific to this
826 * individual peer. If a flag is set independent of the peer-group, the
827 * same bit should be set here. If this peer is a peer-group, this
828 * memory region should be all zeros.
829 *
830 * The assumption is that the default state for all flags is unset,
831 * so if a flag is unset, the corresponding override flag is unset too.
832 * However if a flag is set, the corresponding override flag is set.
833 */
834 uint32_t flags_override;
835 /*
836 * Parallel array to flags that indicates whether the default behavior
837 * of *flags_override* should be inverted. If a flag is unset and the
838 * corresponding invert flag is set, the corresponding override flag
839 * would be set. However if a flag is set and the corresponding invert
840 * flag is unset, the corresponding override flag would be unset.
841 *
842 * This can be used for attributes like *send-community*, which are
843 * implicitely enabled and have to be disabled explicitely, compared to
844 * 'normal' attributes like *next-hop-self* which are implicitely set.
845 *
846 * All operations dealing with flags should apply the following boolean
847 * logic to keep the internal flag system in a sane state:
848 *
849 * value=0 invert=0 Inherit flag if member, otherwise unset flag
850 * value=0 invert=1 Unset flag unconditionally
851 * value=1 invert=0 Set flag unconditionally
852 * value=1 invert=1 Inherit flag if member, otherwise set flag
853 *
854 * Contrary to the implementation of *flags_override*, the flag
855 * inversion state can be set either on the peer OR the peer *and* the
856 * peer-group. This was done on purpose, as the inversion state of a
857 * flag can be determined on either the peer or the peer-group.
858 *
859 * Example: Enabling the cisco configuration mode inverts all flags
860 * related to *send-community* unconditionally for both peer-groups and
861 * peers.
862 *
863 * This behavior is different for interface peers though, which enable
864 * the *extended-nexthop* flag by default, which regular peers do not.
865 * As the peer-group can contain both regular and interface peers, the
866 * flag inversion state must be set on the peer only.
867 *
868 * When a peer inherits the configuration from a peer-group and the
869 * inversion state of the flag differs between peer and peer-group, the
870 * newly set value must equal to the inverted state of the peer-group.
871 */
872 uint32_t flags_invert;
873 /*
874 * Effective array for storing the peer/peer-group flags. In case of a
875 * peer-group, the peer-specific overrides (see flags_override and
876 * flags_invert) must be respected.
877 */
d7c0a89a 878 uint32_t flags;
718e3744 879#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
880#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
881#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
882#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
883#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 884#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 885#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 886#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 887#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
47cbc09b
PM
888#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
889#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS
890#define PEER_FLAG_LONESOUL (1 << 11)
891#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
892#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 893#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
47cbc09b
PM
894#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
895#define PEER_FLAG_ENFORCE_FIRST_AS (1 << 16) /* enforce-first-as */
b90a8e13
PM
896#define PEER_FLAG_ROUTEADV (1 << 17) /* route advertise */
897#define PEER_FLAG_TIMER (1 << 18) /* keepalive & holdtime */
898#define PEER_FLAG_TIMER_CONNECT (1 << 19) /* connect timer */
a14810f4
PM
899#define PEER_FLAG_PASSWORD (1 << 20) /* password */
900#define PEER_FLAG_LOCAL_AS (1 << 21) /* local-as */
901#define PEER_FLAG_UPDATE_SOURCE (1 << 22) /* update-source */
02a82b47 902
d62a17ae 903 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
904 char *tx_shutdown_message;
718e3744 905
d62a17ae 906 /* NSF mode (graceful restart) */
d7c0a89a 907 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 908
04e1c5bb
QY
909 /* Peer Per AF flags */
910 /*
9fb964de
PM
911 * Please consult the comments for *flags_override*, *flags_invert* and
912 * *flags* to understand what these three arrays do. The address-family
913 * specific attributes are being treated the exact same way as global
914 * peer attributes.
04e1c5bb
QY
915 */
916 uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
27c05d4d 917 uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
d7c0a89a 918 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 919#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
920#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
921#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
922#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
923#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
924#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
925#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
926#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
927#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
928#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
929#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
930#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
931#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
932#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
933#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
934#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 935#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 936#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS
937#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
938#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 939#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 940#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
d93f7ffc 941#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 942#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 943#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 944
dcc68b5e
MS
945 enum bgp_addpath_strat addpath_type[AFI_MAX][SAFI_MAX];
946
d62a17ae 947 /* MD5 password */
948 char *password;
718e3744 949
d62a17ae 950 /* default-originate route-map. */
951 struct {
952 char *name;
953 struct route_map *map;
954 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 955
d62a17ae 956 /* Peer status flags. */
d7c0a89a 957 uint16_t sflags;
718e3744 958#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
959#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
960#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
961#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
962#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 963#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
964#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 965
d62a17ae 966 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 967 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 968#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
969#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS
970#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
971#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
972#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
973#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 974
b90a8e13 975 /* Configured timer values. */
1588f6f4
QY
976 _Atomic uint32_t holdtime;
977 _Atomic uint32_t keepalive;
978 _Atomic uint32_t connect;
979 _Atomic uint32_t routeadv;
d62a17ae 980
981 /* Timer values. */
1588f6f4
QY
982 _Atomic uint32_t v_start;
983 _Atomic uint32_t v_connect;
984 _Atomic uint32_t v_holdtime;
985 _Atomic uint32_t v_keepalive;
986 _Atomic uint32_t v_routeadv;
987 _Atomic uint32_t v_pmax_restart;
988 _Atomic uint32_t v_gr_restart;
d62a17ae 989
990 /* Threads. */
991 struct thread *t_read;
424ab01d 992 struct thread *t_write;
d62a17ae 993 struct thread *t_start;
387f984e
QY
994 struct thread *t_connect_check_r;
995 struct thread *t_connect_check_w;
d62a17ae 996 struct thread *t_connect;
997 struct thread *t_holdtime;
d62a17ae 998 struct thread *t_routeadv;
999 struct thread *t_pmax_restart;
1000 struct thread *t_gr_restart;
1001 struct thread *t_gr_stale;
56257a44 1002 struct thread *t_generate_updgrp_packets;
424ab01d 1003 struct thread *t_process_packet;
d62a17ae 1004
49507a6f 1005 /* Thread flags. */
1588f6f4 1006 _Atomic uint16_t thread_flags;
b750b0ba
QY
1007#define PEER_THREAD_WRITES_ON (1 << 0)
1008#define PEER_THREAD_READS_ON (1 << 1)
1009#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 1010 /* workqueues */
1011 struct work_queue *clear_node_queue;
1012
a4d82a8a
PZ
1013#define PEER_TOTAL_RX(peer) \
1014 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
1015 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
1016 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
1017 + atomic_load_explicit(&peer->refresh_in, \
1018 memory_order_relaxed) \
1019 + atomic_load_explicit(&peer->keepalive_in, \
1020 memory_order_relaxed) \
1021 + atomic_load_explicit(&peer->dynamic_cap_in, \
1022 memory_order_relaxed)
1023
1024#define PEER_TOTAL_TX(peer) \
1025 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
1026 + atomic_load_explicit(&peer->update_out, \
1027 memory_order_relaxed) \
1028 + atomic_load_explicit(&peer->notify_out, \
1029 memory_order_relaxed) \
1030 + atomic_load_explicit(&peer->refresh_out, \
1031 memory_order_relaxed) \
1032 + atomic_load_explicit(&peer->keepalive_out, \
1033 memory_order_relaxed) \
1034 + atomic_load_explicit(&peer->dynamic_cap_out, \
1035 memory_order_relaxed)
0112e9e0 1036
d62a17ae 1037 /* Statistics field */
996c9314
LB
1038 _Atomic uint32_t open_in; /* Open message input count */
1039 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY
1040 _Atomic uint32_t update_in; /* Update message input count */
1041 _Atomic uint32_t update_out; /* Update message ouput count */
1042 _Atomic time_t update_time; /* Update message received time. */
1043 _Atomic uint32_t keepalive_in; /* Keepalive input count */
1044 _Atomic uint32_t keepalive_out; /* Keepalive output count */
1045 _Atomic uint32_t notify_in; /* Notify input count */
1046 _Atomic uint32_t notify_out; /* Notify output count */
1047 _Atomic uint32_t refresh_in; /* Route Refresh input count */
1048 _Atomic uint32_t refresh_out; /* Route Refresh output count */
1049 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 1050 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 1051
1052 /* BGP state count */
d7c0a89a
QY
1053 uint32_t established; /* Established */
1054 uint32_t dropped; /* Dropped */
d62a17ae 1055
1056 /* Update delay related fields */
d7c0a89a 1057 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 1058 for EOR */
1059
1060 /* Syncronization list and time. */
1061 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
1062 time_t synctime;
1588f6f4
QY
1063 /* timestamp when the last UPDATE msg was written */
1064 _Atomic time_t last_write;
1065 /* timestamp when the last msg was written */
1066 _Atomic time_t last_update;
d62a17ae 1067
1068 /* Send prefix count. */
1069 unsigned long scount[AFI_MAX][SAFI_MAX];
1070
d62a17ae 1071 /* Notify data. */
1072 struct bgp_notify notify;
1073
d62a17ae 1074 /* Filter structure. */
1075 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
1076
70ee29b4
PM
1077 /*
1078 * Parallel array to filter that indicates whether each filter
1079 * originates from a peer-group or if it is config that is specific to
1080 * this individual peer. If a filter is set independent of the
1081 * peer-group the appropriate bit should be set here. If this peer is a
1082 * peer-group, this memory region should be all zeros. The assumption
1083 * is that the default state for all flags is unset. Due to filters
1084 * having a direction (e.g. in/out/...), this array has a third
1085 * dimension for storing the overrides independently per direction.
1086 *
1087 * Notes:
1088 * - if a filter for an individual peer is unset, the corresponding
1089 * override flag is unset and the peer is considered to be back in
1090 * sync with the peer-group.
1091 * - This does *not* contain the filter values, rather it contains
1092 * whether the filter in filter (struct bgp_filter) is peer-specific.
1093 */
1094 uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
1095 ? FILTER_MAX
1096 : RMAP_MAX];
1097#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
1098#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
1099#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
1100#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
1101#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
1102
d62a17ae 1103 /* ORF Prefix-list */
1104 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
1105
1106 /* Text description of last attribute rcvd */
1107 char rcvd_attr_str[BUFSIZ];
1108
1109 /* Track if we printed the attribute in debugs */
1110 int rcvd_attr_printed;
1111
1112 /* Prefix count. */
1113 unsigned long pcount[AFI_MAX][SAFI_MAX];
1114
1115 /* Max prefix count. */
1116 unsigned long pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY
1117 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1118 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1119#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1120
d62a17ae 1121 /* allowas-in. */
1122 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1123
d62a17ae 1124 /* weight */
1125 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1126
d62a17ae 1127 /* peer reset cause */
1128 char last_reset;
e0701b79 1129#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1130#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1131#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1132#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1133#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1134#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1135#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1136#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1137#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1138#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1139#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1140#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1141#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1142#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1143#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1144#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1145#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1146#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1147#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1148#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1149#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1150#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1151#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1152#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD
1153#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1154#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 1155 unsigned long last_reset_cause_size;
d7c0a89a 1156 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1157
d62a17ae 1158 /* The kind of route-map Flags.*/
d7c0a89a 1159 uint8_t rmap_type;
ac41b2a2 1160#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1161#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1162#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1163#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1164#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1165#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1166#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1167#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1168
d62a17ae 1169 /* peer specific BFD information */
1170 struct bfd_info *bfd_info;
04b6bdc0 1171
d62a17ae 1172 /* hostname and domainname advertised by host */
1173 char *hostname;
1174 char *domainname;
19df7279 1175
d62a17ae 1176 QOBJ_FIELDS
718e3744 1177};
19df7279 1178DECLARE_QOBJ_TYPE(peer)
718e3744 1179
598ce6bd 1180/* Inherit peer attribute from peer-group. */
e7103a96
PM
1181#define PEER_ATTR_INHERIT(peer, group, attr) \
1182 ((peer)->attr = (group)->conf->attr)
1183#define PEER_STR_ATTR_INHERIT(peer, group, attr, mt) \
598ce6bd
PM
1184 do { \
1185 if ((peer)->attr) \
1186 XFREE(mt, (peer)->attr); \
e7103a96
PM
1187 if ((group)->conf->attr) \
1188 (peer)->attr = XSTRDUP(mt, (group)->conf->attr); \
598ce6bd
PM
1189 else \
1190 (peer)->attr = NULL; \
1191 } while (0)
a14810f4
PM
1192#define PEER_SU_ATTR_INHERIT(peer, group, attr) \
1193 do { \
1194 if ((peer)->attr) \
1195 sockunion_free((peer)->attr); \
1196 if ((group)->conf->attr) \
1197 (peer)->attr = sockunion_dup((group)->conf->attr); \
1198 else \
1199 (peer)->attr = NULL; \
1200 } while (0)
598ce6bd 1201
ad4cbda1 1202/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1203#define BGP_PEER_START_SUPPRESSED(P) \
1204 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1205 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1206
0df7c91f
PJ
1207#define PEER_PASSWORD_MINLEN (1)
1208#define PEER_PASSWORD_MAXLEN (80)
1209
718e3744 1210/* This structure's member directly points incoming packet data
1211 stream. */
d62a17ae 1212struct bgp_nlri {
1213 /* AFI. */
a46a2e9b 1214 uint16_t afi; /* iana_afi_t */
718e3744 1215
d62a17ae 1216 /* SAFI. */
a46a2e9b 1217 uint8_t safi; /* iana_safi_t */
718e3744 1218
d62a17ae 1219 /* Pointer to NLRI byte stream. */
d7c0a89a 1220 uint8_t *nlri;
718e3744 1221
d62a17ae 1222 /* Length of whole NLRI. */
1223 bgp_size_t length;
718e3744 1224};
1225
1226/* BGP versions. */
1227#define BGP_VERSION_4 4
718e3744 1228
1229/* Default BGP port number. */
1230#define BGP_PORT_DEFAULT 179
1231
718e3744 1232/* BGP minimum message size. */
1233#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1234#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1235#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1236#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1237#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1238#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1239
1240/* BGP message types. */
1241#define BGP_MSG_OPEN 1
1242#define BGP_MSG_UPDATE 2
1243#define BGP_MSG_NOTIFY 3
1244#define BGP_MSG_KEEPALIVE 4
1245#define BGP_MSG_ROUTE_REFRESH_NEW 5
1246#define BGP_MSG_CAPABILITY 6
1247#define BGP_MSG_ROUTE_REFRESH_OLD 128
1248
1249/* BGP open optional parameter. */
1250#define BGP_OPEN_OPT_AUTH 1
1251#define BGP_OPEN_OPT_CAP 2
1252
1253/* BGP4 attribute type codes. */
1254#define BGP_ATTR_ORIGIN 1
1255#define BGP_ATTR_AS_PATH 2
1256#define BGP_ATTR_NEXT_HOP 3
1257#define BGP_ATTR_MULTI_EXIT_DISC 4
1258#define BGP_ATTR_LOCAL_PREF 5
1259#define BGP_ATTR_ATOMIC_AGGREGATE 6
1260#define BGP_ATTR_AGGREGATOR 7
1261#define BGP_ATTR_COMMUNITIES 8
1262#define BGP_ATTR_ORIGINATOR_ID 9
1263#define BGP_ATTR_CLUSTER_LIST 10
1264#define BGP_ATTR_DPA 11
1265#define BGP_ATTR_ADVERTISER 12
1266#define BGP_ATTR_RCID_PATH 13
1267#define BGP_ATTR_MP_REACH_NLRI 14
1268#define BGP_ATTR_MP_UNREACH_NLRI 15
1269#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ
1270#define BGP_ATTR_AS4_PATH 17
1271#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1272#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1273#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1274#define BGP_ATTR_ENCAP 23
57d187bc 1275#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1276#define BGP_ATTR_PREFIX_SID 40
65efcfce
LB
1277#if ENABLE_BGP_VNC
1278#define BGP_ATTR_VNC 255
1279#endif
718e3744 1280
1281/* BGP update origin. */
1282#define BGP_ORIGIN_IGP 0
1283#define BGP_ORIGIN_EGP 1
1284#define BGP_ORIGIN_INCOMPLETE 2
1285
1286/* BGP notify message codes. */
1287#define BGP_NOTIFY_HEADER_ERR 1
1288#define BGP_NOTIFY_OPEN_ERR 2
1289#define BGP_NOTIFY_UPDATE_ERR 3
1290#define BGP_NOTIFY_HOLD_ERR 4
1291#define BGP_NOTIFY_FSM_ERR 5
1292#define BGP_NOTIFY_CEASE 6
1293#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1294
4b4e07d2
DT
1295#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1296
718e3744 1297/* BGP_NOTIFY_HEADER_ERR sub codes. */
1298#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1299#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1300#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1301
1302/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1303#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1304#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1305#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1306#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1307#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1308#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1309#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1310#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1311
1312/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1313#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1314#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1315#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1316#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1317#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1318#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1319#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1320#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1321#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1322#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1323#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1324
4b4e07d2 1325/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1326#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1327#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1328#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1329#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1330#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1331#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1332#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1333#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1334
1335/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1336#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1337#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1338#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1339
1340/* BGP finite state machine status. */
1341#define Idle 1
1342#define Connect 2
1343#define Active 3
1344#define OpenSent 4
1345#define OpenConfirm 5
1346#define Established 6
ca058a30
PJ
1347#define Clearing 7
1348#define Deleted 8
1349#define BGP_STATUS_MAX 9
718e3744 1350
1351/* BGP finite state machine events. */
1352#define BGP_Start 1
1353#define BGP_Stop 2
1354#define TCP_connection_open 3
1355#define TCP_connection_closed 4
1356#define TCP_connection_open_failed 5
1357#define TCP_fatal_error 6
1358#define ConnectRetry_timer_expired 7
1359#define Hold_Timer_expired 8
1360#define KeepAlive_timer_expired 9
1361#define Receive_OPEN_message 10
1362#define Receive_KEEPALIVE_message 11
1363#define Receive_UPDATE_message 12
1364#define Receive_NOTIFICATION_message 13
ca058a30
PJ
1365#define Clearing_Completed 14
1366#define BGP_EVENTS_MAX 15
718e3744 1367
1368/* BGP timers default value. */
8efe88ea 1369/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1370#define BGP_INIT_START_TIMER 1
8efe88ea
DL
1371#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1372#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1373#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1374#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1375#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1376
1377/* BGP default local preference. */
1378#define BGP_DEFAULT_LOCAL_PREF 100
1379
7f323236
DW
1380/* BGP local-preference to send when 'bgp graceful-shutdown'
1381 * is configured */
1382#define BGP_GSHUT_LOCAL_PREF 0
1383
3f9c7369
DS
1384/* BGP default subgroup packet queue max . */
1385#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1386
538621f2 1387/* BGP graceful restart */
1388#define BGP_DEFAULT_RESTART_TIME 120
1389#define BGP_DEFAULT_STALEPATH_TIME 360
1390
718e3744 1391/* BGP uptime string length. */
1392#define BGP_UPTIME_LEN 25
1393
1394/* Default configuration settings for bgpd. */
1395#define BGP_VTY_PORT 2605
718e3744 1396#define BGP_DEFAULT_CONFIG "bgpd.conf"
1397
1398/* Check AS path loop when we send NLRI. */
1399/* #define BGP_SEND_ASPATH_CHECK */
1400
f14e6fdb
DS
1401/* BGP Dynamic Neighbors feature */
1402#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1403#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1404#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1405
718e3744 1406/* Flag for peer_clear_soft(). */
d62a17ae 1407enum bgp_clear_type {
1408 BGP_CLEAR_SOFT_NONE,
1409 BGP_CLEAR_SOFT_OUT,
1410 BGP_CLEAR_SOFT_IN,
1411 BGP_CLEAR_SOFT_BOTH,
1412 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1413};
1414
1415/* Macros. */
424ab01d 1416#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1417#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1418#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1419 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1420
718e3744 1421/* BGP error codes. */
1422#define BGP_SUCCESS 0
1423#define BGP_ERR_INVALID_VALUE -1
1424#define BGP_ERR_INVALID_FLAG -2
1425#define BGP_ERR_INVALID_AS -3
1426#define BGP_ERR_INVALID_BGP -4
1427#define BGP_ERR_PEER_GROUP_MEMBER -5
1428#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW
1429#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1430#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1431#define BGP_ERR_PEER_GROUP_MISMATCH -9
1432#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1433#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1434#define BGP_ERR_AS_MISMATCH -12
1435#define BGP_ERR_PEER_FLAG_CONFLICT -13
1436#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1437#define BGP_ERR_PEER_FILTER_CONFLICT -15
1438#define BGP_ERR_NOT_INTERNAL_PEER -16
1439#define BGP_ERR_REMOVE_PRIVATE_AS -17
1440#define BGP_ERR_AF_UNCONFIGURED -18
1441#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1442#define BGP_ERR_INSTANCE_MISMATCH -20
1443#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1444#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1445#define BGP_ERR_TCPSIG_FAILED -23
1446#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1447#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1448#define BGP_ERR_NO_INTERFACE_CONFIG -26
1449#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1450#define BGP_ERR_AS_OVERRIDE -28
1451#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1452#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1453#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1454#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1455#define BGP_ERR_MAX -33
63fa10b5 1456#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1457#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1458
3f9c7369
DS
1459/*
1460 * Enumeration of different policy kinds a peer can be configured with.
1461 */
d62a17ae 1462typedef enum {
1463 BGP_POLICY_ROUTE_MAP,
1464 BGP_POLICY_FILTER_LIST,
1465 BGP_POLICY_PREFIX_LIST,
1466 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS
1467} bgp_policy_type_e;
1468
dcc68b5e
MS
1469/* peer_flag_change_type. */
1470enum peer_change_type {
1471 peer_change_none,
1472 peer_change_reset,
1473 peer_change_reset_in,
1474 peer_change_reset_out,
1475};
1476
718e3744 1477extern struct bgp_master *bm;
37fe7731 1478extern unsigned int multipath_num;
718e3744 1479
718e3744 1480/* Prototypes. */
d62a17ae 1481extern void bgp_terminate(void);
1482extern void bgp_reset(void);
1483extern time_t bgp_clock(void);
1484extern void bgp_zclient_reset(void);
d62a17ae 1485extern struct bgp *bgp_get_default(void);
1486extern struct bgp *bgp_lookup(as_t, const char *);
1487extern struct bgp *bgp_lookup_by_name(const char *);
1488extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1489extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1490extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1491extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1492extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1493extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1494extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1495extern struct peer_group *peer_group_get(struct bgp *, const char *);
1496extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1497 union sockunion *,
1498 struct peer_group *);
1499extern struct prefix *
1500peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1501extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1502 struct prefix *,
1503 struct prefix **);
1504extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1505 union sockunion *);
28066f4b
DS
1506
1507/*
1508 * Peers are incredibly easy to memory leak
1509 * due to the various ways that they are actually used
1510 * Provide some functionality to debug locks and unlocks
1511 */
1512extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1513extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1514#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1515#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1516
d62a17ae 1517extern bgp_peer_sort_t peer_sort(struct peer *peer);
1518extern int peer_active(struct peer *);
1519extern int peer_active_nego(struct peer *);
1520extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1521extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1522 as_t, as_t, int, afi_t, safi_t,
1523 struct peer_group *);
1524extern struct peer *peer_create_accept(struct bgp *);
1525extern void peer_xfer_config(struct peer *dst, struct peer *src);
94d4c685
DS
1526extern char *peer_uptime(time_t uptime2, char *buf, size_t len, bool use_json,
1527 json_object *json);
856ca177 1528
d62a17ae 1529extern int bgp_config_write(struct vty *);
6b0655a2 1530
d62a17ae 1531extern void bgp_master_init(struct thread_master *master);
718e3744 1532
f533be73 1533extern void bgp_init(unsigned short instance);
419dfe6a 1534extern void bgp_pthreads_run(void);
2d4ee774 1535extern void bgp_pthreads_finish(void);
d62a17ae 1536extern void bgp_route_map_init(void);
1537extern void bgp_session_reset(struct peer *);
718e3744 1538
d62a17ae 1539extern int bgp_option_set(int);
1540extern int bgp_option_unset(int);
1541extern int bgp_option_check(int);
718e3744 1542
d62a17ae 1543extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1544extern void bgp_instance_up(struct bgp *);
1545extern void bgp_instance_down(struct bgp *);
1546extern int bgp_delete(struct bgp *);
718e3744 1547
e5619c28
PG
1548extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1549 vrf_id_t old_vrf_id, bool create);
1550
d62a17ae 1551extern int bgp_flag_set(struct bgp *, int);
1552extern int bgp_flag_unset(struct bgp *, int);
1553extern int bgp_flag_check(struct bgp *, int);
718e3744 1554
d62a17ae 1555extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1556extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1557
d62a17ae 1558extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1559extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1560
d62a17ae 1561extern int bgp_confederation_id_set(struct bgp *, as_t);
1562extern int bgp_confederation_id_unset(struct bgp *);
1563extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1564
d62a17ae 1565extern int bgp_confederation_peers_add(struct bgp *, as_t);
1566extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1567
d7c0a89a 1568extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime);
d62a17ae 1569extern int bgp_timers_unset(struct bgp *);
718e3744 1570
d7c0a89a 1571extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1572extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1573
d7c0a89a 1574extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1575extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1576
d62a17ae 1577extern int bgp_listen_limit_set(struct bgp *, int);
1578extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1579
d62a17ae 1580extern int bgp_update_delay_active(struct bgp *);
1581extern int bgp_update_delay_configured(struct bgp *);
318cac96 1582extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1583extern void peer_as_change(struct peer *, as_t, int);
1584extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1585 int, afi_t, safi_t);
1586extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1587extern int peer_delete(struct peer *peer);
1588extern int peer_group_delete(struct peer_group *);
1589extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1590extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1591
d62a17ae 1592extern int peer_activate(struct peer *, afi_t, safi_t);
1593extern int peer_deactivate(struct peer *, afi_t, safi_t);
1594extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1595
d62a17ae 1596extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1597 struct peer_group *, as_t *);
718e3744 1598
d7c0a89a
QY
1599extern int peer_flag_set(struct peer *, uint32_t);
1600extern int peer_flag_unset(struct peer *, uint32_t);
9fb964de 1601extern void peer_flag_inherit(struct peer *peer, uint32_t flag);
718e3744 1602
d7c0a89a
QY
1603extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1604extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1605extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
cf9ac8bf
PM
1606extern void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi,
1607 uint32_t flag);
dcc68b5e
MS
1608extern void peer_change_action(struct peer *peer, afi_t afi, safi_t safi,
1609 enum peer_change_type type);
718e3744 1610
d62a17ae 1611extern int peer_ebgp_multihop_set(struct peer *, int);
1612extern int peer_ebgp_multihop_unset(struct peer *);
1613extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1614
d62a17ae 1615extern int peer_description_set(struct peer *, const char *);
1616extern int peer_description_unset(struct peer *);
718e3744 1617
d62a17ae 1618extern int peer_update_source_if_set(struct peer *, const char *);
1619extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1620extern int peer_update_source_unset(struct peer *);
718e3744 1621
1de27621
DA
1622extern int peer_default_originate_set(struct peer *peer, afi_t afi, safi_t safi,
1623 const char *rmap,
1624 struct route_map *route_map);
d62a17ae 1625extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1626
d7c0a89a 1627extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1628extern int peer_port_unset(struct peer *);
718e3744 1629
d7c0a89a 1630extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1631extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1632
d7c0a89a
QY
1633extern int peer_timers_set(struct peer *, uint32_t keepalive,
1634 uint32_t holdtime);
d62a17ae 1635extern int peer_timers_unset(struct peer *);
718e3744 1636
d7c0a89a 1637extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1638extern int peer_timers_connect_unset(struct peer *);
718e3744 1639
d7c0a89a 1640extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1641extern int peer_advertise_interval_unset(struct peer *);
718e3744 1642
d62a17ae 1643extern void peer_interface_set(struct peer *, const char *);
1644extern void peer_interface_unset(struct peer *);
718e3744 1645
d62a17ae 1646extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1647extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1648
d62a17ae 1649extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1650extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1651
d62a17ae 1652extern int peer_local_as_set(struct peer *, as_t, int, int);
1653extern int peer_local_as_unset(struct peer *);
718e3744 1654
d62a17ae 1655extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1656 const char *);
1657extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1658
d62a17ae 1659extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1660extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1661
1de27621
DA
1662extern int peer_route_map_set(struct peer *peer, afi_t afi, safi_t safi, int,
1663 const char *name, struct route_map *route_map);
d62a17ae 1664extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1665
1de27621
DA
1666extern int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi,
1667 const char *name,
1668 struct route_map *route_map);
0df7c91f 1669
d62a17ae 1670extern int peer_password_set(struct peer *, const char *);
1671extern int peer_password_unset(struct peer *);
0df7c91f 1672
d62a17ae 1673extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1674
d7c0a89a
QY
1675extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1676 uint8_t, int, uint16_t);
d62a17ae 1677extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1678
d62a17ae 1679extern int peer_clear(struct peer *, struct listnode **);
1680extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1681
d62a17ae 1682extern int peer_ttl_security_hops_set(struct peer *, int);
1683extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1684
d62a17ae 1685extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1686extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1687
d62a17ae 1688extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1689extern void bgp_route_map_terminate(void);
16286195 1690
d62a17ae 1691extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1692
5c525538 1693extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1694 afi_t *afi, safi_t *safi);
1695extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ
1696 iana_afi_t *pkt_afi,
1697 iana_safi_t *pkt_safi);
9cabb64b 1698
d62a17ae 1699extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1700extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1701extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1702
ffd0c037 1703extern void bgp_close(void);
92375c91
JB
1704extern void bgp_free(struct bgp *);
1705
1706static inline struct bgp *bgp_lock(struct bgp *bgp)
1707{
1708 bgp->lock++;
1709 return bgp;
1710}
1711
1712static inline void bgp_unlock(struct bgp *bgp)
1713{
1714 assert(bgp->lock > 0);
1715 if (--bgp->lock == 0)
1716 bgp_free(bgp);
1717}
ffd0c037 1718
d62a17ae 1719static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1720{
d62a17ae 1721 switch (afi) {
1722 case AFI_IP:
1723 switch (safi) {
1724 case SAFI_UNICAST:
1725 return BGP_AF_IPV4_UNICAST;
1726 break;
1727 case SAFI_MULTICAST:
1728 return BGP_AF_IPV4_MULTICAST;
1729 break;
1730 case SAFI_LABELED_UNICAST:
1731 return BGP_AF_IPV4_LBL_UNICAST;
1732 break;
1733 case SAFI_MPLS_VPN:
1734 return BGP_AF_IPV4_VPN;
1735 break;
1736 case SAFI_ENCAP:
1737 return BGP_AF_IPV4_ENCAP;
1738 break;
7c40bf39 1739 case SAFI_FLOWSPEC:
1740 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1741 default:
1742 return BGP_AF_MAX;
1743 break;
1744 }
1745 break;
1746 case AFI_IP6:
1747 switch (safi) {
1748 case SAFI_UNICAST:
1749 return BGP_AF_IPV6_UNICAST;
1750 break;
1751 case SAFI_MULTICAST:
1752 return BGP_AF_IPV6_MULTICAST;
1753 break;
1754 case SAFI_LABELED_UNICAST:
1755 return BGP_AF_IPV6_LBL_UNICAST;
1756 break;
1757 case SAFI_MPLS_VPN:
1758 return BGP_AF_IPV6_VPN;
1759 break;
1760 case SAFI_ENCAP:
1761 return BGP_AF_IPV6_ENCAP;
1762 break;
7c40bf39 1763 case SAFI_FLOWSPEC:
1764 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1765 default:
1766 return BGP_AF_MAX;
1767 break;
1768 }
1769 break;
1770 case AFI_L2VPN:
1771 switch (safi) {
1772 case SAFI_EVPN:
1773 return BGP_AF_L2VPN_EVPN;
1774 break;
1775 default:
1776 return BGP_AF_MAX;
1777 break;
1778 }
3f9c7369 1779 default:
d62a17ae 1780 return BGP_AF_MAX;
1781 break;
3f9c7369 1782 }
3f9c7369
DS
1783}
1784
c8560b44 1785/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1786static inline int peer_group_active(struct peer *peer)
3f9c7369 1787{
d62a17ae 1788 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1789 return 1;
1790 return 0;
3f9c7369
DS
1791}
1792
1793/* If peer is negotiated at least one address family return 1. */
d62a17ae 1794static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1795{
d62a17ae 1796 if (peer->afc_nego[afi][SAFI_UNICAST]
1797 || peer->afc_nego[afi][SAFI_MULTICAST]
1798 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1799 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1800 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1801 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1802 || peer->afc_nego[afi][SAFI_EVPN])
1803 return 1;
1804 return 0;
3f9c7369
DS
1805}
1806
f14e6fdb 1807/* If at least one address family activated for group, return 1. */
d62a17ae 1808static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1809{
d62a17ae 1810 struct peer *peer = group->conf;
1811
1812 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1813 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 1814 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 1815 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1816 || peer->afc[AFI_IP6][SAFI_UNICAST]
1817 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1818 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1819 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1820 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 1821 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 1822 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1823 return 1;
1824 return 0;
f14e6fdb
DS
1825}
1826
d62a17ae 1827static inline char *timestamp_string(time_t ts)
3f9c7369 1828{
d62a17ae 1829 time_t tbuf;
1830 tbuf = time(NULL) - (bgp_clock() - ts);
1831 return ctime(&tbuf);
3f9c7369
DS
1832}
1833
d62a17ae 1834static inline int peer_established(struct peer *peer)
3f9c7369 1835{
d62a17ae 1836 if (peer->status == Established)
1837 return 1;
1838 return 0;
3f9c7369
DS
1839}
1840
d62a17ae 1841static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1842{
d62a17ae 1843 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS
1844}
1845
d62a17ae 1846static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1847{
d62a17ae 1848 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS
1849}
1850
d1be1f08 1851/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1852static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1853{
d62a17ae 1854 struct vrf *vrf;
d1be1f08 1855
d62a17ae 1856 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1857 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1858 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1859 vrf = vrf_lookup_by_name(bgp->name);
1860 else
1861 vrf = NULL;
d1be1f08 1862
d62a17ae 1863 return vrf;
d1be1f08 1864}
1865
1866/* Link BGP instance to VRF. */
d62a17ae 1867static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1868{
d62a17ae 1869 bgp->vrf_id = vrf->vrf_id;
92375c91
JB
1870 if (vrf->info != (void *)bgp)
1871 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1872}
1873
1874/* Unlink BGP instance from VRF. */
d62a17ae 1875static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1876{
d62a17ae 1877 if (vrf->info == (void *)bgp) {
1878 vrf->info = NULL;
1879 bgp_unlock(bgp);
1880 }
1881 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1882}
1883
d62a17ae 1884extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB
1885
1886/* For benefit of rfapi */
d62a17ae 1887extern struct peer *peer_new(struct bgp *bgp);
65efcfce 1888
00d252cb 1889#endif /* _QUAGGA_BGPD_H */