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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"
718e3744 40
04b6bdc0 41#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 42#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 43
5c81b96a 44/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
45#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
46
3f9c7369
DS		 47struct update_subgroup;
48struct bpacket;
49
0299c004
DS		 50/*
51 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 52 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
53 * behavior
0299c004
DS		 54 * in the system.
55 */
d62a17ae 56enum { AS_UNSPECIFIED = 0,
57 AS_SPECIFIED,
58 AS_INTERNAL,
59 AS_EXTERNAL,
0299c004
DS		 60};
61
718e3744 62/* Typedef BGP specific types. */
0b2aa3a0
PJ		 63typedef u_int32_t as_t;
64typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
718e3744 65typedef u_int16_t bgp_size_t;
66
d62a17ae 67#define max(a, b) \
68 ({ \
69 __typeof__(a) _a = (a); \
70 __typeof__(b) _b = (b); \
71 _a > _b ? _a : _b; \
72 })
73
74enum bgp_af_index {
75 BGP_AF_START,
76 BGP_AF_IPV4_UNICAST = BGP_AF_START,
77 BGP_AF_IPV4_MULTICAST,
78 BGP_AF_IPV4_VPN,
79 BGP_AF_IPV6_UNICAST,
80 BGP_AF_IPV6_MULTICAST,
81 BGP_AF_IPV6_VPN,
82 BGP_AF_IPV4_ENCAP,
83 BGP_AF_IPV6_ENCAP,
84 BGP_AF_L2VPN_EVPN,
85 BGP_AF_IPV4_LBL_UNICAST,
86 BGP_AF_IPV6_LBL_UNICAST,
87 BGP_AF_MAX
3f9c7369
DS		 88};
89
d62a17ae 90#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 91
d62a17ae 92#define FOREACH_AFI_SAFI(afi, safi) \
93 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
94 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 95
718e3744 96/* BGP master for system wide configurations and variables. */
d62a17ae 97struct bgp_master {
98 /* BGP instance list. */
99 struct list *bgp;
100
101 /* BGP thread master. */
102 struct thread_master *master;
718e3744 103
0ca8b79f 104/* BGP pthreads. */
424ab01d 105#define PTHREAD_IO (1 << 1)
0ca8b79f 106#define PTHREAD_KEEPALIVES (1 << 2)
2d4ee774 107
d62a17ae 108 /* work queues */
109 struct work_queue *process_main_queue;
87d4a781 110
d62a17ae 111 /* Listening sockets */
112 struct list *listen_sockets;
718e3744 113
d62a17ae 114 /* BGP port number. */
115 u_int16_t port;
3a02d1f7 116
d62a17ae 117 /* Listener address */
118 char *address;
718e3744 119
d62a17ae 120 /* BGP start time. */
121 time_t start_time;
122
123 /* Various BGP global configuration. */
124 u_char options;
718e3744 125#define BGP_OPT_NO_FIB (1 << 0)
126#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
127#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 128#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369 129
d62a17ae 130 uint64_t updgrp_idspace;
131 uint64_t subgrp_idspace;
5fe9f963 132
d62a17ae 133 /* timer to dampen route map changes */
134 struct thread *t_rmap_update; /* Handle route map updates */
135 u_int32_t rmap_update_timer; /* Route map update timer */
5fe9f963 136#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 137
e9eb5f63 138 /* Id space for automatic RD derivation for an EVI/VRF */
139 bitfield_t rd_idspace;
140
d62a17ae 141 QOBJ_FIELDS
718e3744 142};
19df7279 143DECLARE_QOBJ_TYPE(bgp_master)
718e3744 144
73ac8160 145/* BGP route-map structure. */
d62a17ae 146struct bgp_rmap {
147 char *name;
148 struct route_map *map;
73ac8160
DS		 149};
150
d62a17ae 151struct bgp_redist {
152 u_short instance;
7c8ff89e 153
d62a17ae 154 /* BGP redistribute metric configuration. */
155 u_char redist_metric_flag;
156 u_int32_t redist_metric;
7c8ff89e 157
d62a17ae 158 /* BGP redistribute route-map. */
159 struct bgp_rmap rmap;
7c8ff89e
DS		 160};
161
ad4cbda1 162/*
163 * Type of 'struct bgp'.
164 * - Default: The default instance
165 * - VRF: A specific (non-default) VRF
166 * - View: An instance used for route exchange
167 * The "default" instance is treated separately to simplify the code. Note
168 * that if deployed in a Multi-VRF environment, it may not exist.
169 */
d62a17ae 170enum bgp_instance_type {
171 BGP_INSTANCE_TYPE_DEFAULT,
172 BGP_INSTANCE_TYPE_VRF,
173 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 174};
175
718e3744 176/* BGP instance structure. */
d62a17ae 177struct bgp {
178 /* AS number of this BGP instance. */
179 as_t as;
180
181 /* Name of this BGP instance. */
182 char *name;
183
184 /* Type of instance and VRF id. */
185 enum bgp_instance_type inst_type;
186 vrf_id_t vrf_id;
187
188 /* Reference count to allow peer_delete to finish after bgp_delete */
189 int lock;
190
191 /* Self peer. */
192 struct peer *peer_self;
193
194 /* BGP peer. */
195 struct list *peer;
196 struct hash *peerhash;
197
198 /* BGP peer group. */
199 struct list *group;
200
201 /* The maximum number of BGP dynamic neighbors that can be created */
202 int dynamic_neighbors_limit;
203
204 /* The current number of BGP dynamic neighbors */
205 int dynamic_neighbors_count;
206
207 struct hash *update_groups[BGP_AF_MAX];
208
209 /*
210 * Global statistics for update groups.
211 */
212 struct {
213 u_int32_t join_events;
214 u_int32_t prune_events;
215 u_int32_t merge_events;
216 u_int32_t split_events;
217 u_int32_t updgrp_switch_events;
218 u_int32_t peer_refreshes_combined;
219 u_int32_t adj_count;
220 u_int32_t merge_checks_triggered;
221
222 u_int32_t updgrps_created;
223 u_int32_t updgrps_deleted;
224 u_int32_t subgrps_created;
225 u_int32_t subgrps_deleted;
226 } update_group_stats;
227
228 /* BGP configuration. */
229 u_int16_t config;
c2d58d6d 230#define BGP_CONFIG_CLUSTER_ID (1 << 0)
231#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 232
d62a17ae 233 /* BGP router identifier. */
234 struct in_addr router_id;
235 struct in_addr router_id_static;
236 struct in_addr router_id_zebra;
718e3744 237
d62a17ae 238 /* BGP route reflector cluster ID. */
239 struct in_addr cluster_id;
718e3744 240
d62a17ae 241 /* BGP confederation information. */
242 as_t confed_id;
243 as_t *confed_peers;
244 int confed_peers_cnt;
718e3744 245
d62a17ae 246 struct thread
247 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 248
d62a17ae 249 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 250#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d62a17ae 251 u_int32_t maxmed_onstartup_value; /* Max-med value when active on
252 start-up */
253 struct thread
254 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
255 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
256
257 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 258#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
a4d82a8a 259 u_int32_t maxmed_admin_value; /* Max-med value when administrative in on
d62a17ae 260 */
abc920f8
DS		 261#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
262
996c9314
LB		 263 u_char maxmed_active; /* 1/0 if max-med is active or not */
264 u_int32_t maxmed_value; /* Max-med value when its active */
d62a17ae 265
266 /* BGP update delay on startup */
267 struct thread *t_update_delay;
268 struct thread *t_establish_wait;
269 u_char update_delay_over;
270 u_char main_zebra_update_hold;
271 u_char main_peers_update_hold;
272 u_int16_t v_update_delay;
273 u_int16_t v_establish_wait;
274 char update_delay_begin_time[64];
275 char update_delay_end_time[64];
276 char update_delay_zebra_resume_time[64];
277 char update_delay_peers_resume_time[64];
278 u_int32_t established;
279 u_int32_t restarted_peers;
280 u_int32_t implicit_eors;
281 u_int32_t explicit_eors;
f188f2c4
DS		 282#define BGP_UPDATE_DELAY_DEF 0
283#define BGP_UPDATE_DELAY_MIN 0
284#define BGP_UPDATE_DELAY_MAX 3600
285
d62a17ae 286 /* BGP flags. */
287 u_int32_t flags;
718e3744 288#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
289#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
290#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
291#define BGP_FLAG_MED_CONFED (1 << 3)
292#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
293#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
294#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
295#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
296#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
297#define BGP_FLAG_IMPORT_CHECK (1 << 9)
298#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 299#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 300#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 301#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 302#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 303#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 304#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 305#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 306#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 307#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 308#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 309#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 310
d62a17ae 311 /* BGP Per AF flags */
312 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 313#define BGP_CONFIG_DAMPENING (1 << 0)
314
d62a17ae 315 /* Route table for next-hop lookup cache. */
316 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 317
d62a17ae 318 /* Route table for import-check */
319 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 320
d62a17ae 321 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 322
d62a17ae 323 struct hash *address_hash;
6aeb9e78 324
db0e1937
MK		 325 /* DB for all local tunnel-ips - used mainly for martian checks
326 Currently it only has all VxLan tunnel IPs*/
327 struct hash *tip_hash;
328
d62a17ae 329 /* Static route configuration. */
330 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 331
d62a17ae 332 /* Aggregate address configuration. */
333 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 334
d62a17ae 335 /* BGP routing information base. */
336 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 337
d62a17ae 338 /* BGP table route-map. */
339 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 340
d62a17ae 341 /* BGP redistribute configuration. */
342 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 343
318cac96
DW		 344 /* Allocate MPLS labels */
345 u_char allocate_mpls_labels[AFI_MAX][SAFI_MAX];
346
d62a17ae 347 /* timer to re-evaluate neighbor default-originate route-maps */
348 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 349#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
350
d62a17ae 351 /* BGP distance configuration. */
352 u_char distance_ebgp[AFI_MAX][SAFI_MAX];
353 u_char distance_ibgp[AFI_MAX][SAFI_MAX];
354 u_char distance_local[AFI_MAX][SAFI_MAX];
355
356 /* BGP default local-preference. */
357 u_int32_t default_local_pref;
358
359 /* BGP default subgroup pkt queue max */
360 u_int32_t default_subgroup_pkt_queue_max;
361
362 /* BGP default timer. */
363 u_int32_t default_holdtime;
364 u_int32_t default_keepalive;
365
366 /* BGP graceful restart */
367 u_int32_t restart_time;
368 u_int32_t stalepath_time;
369
370 /* Maximum-paths configuration */
371 struct bgp_maxpaths_cfg {
372 u_int16_t maxpaths_ebgp;
373 u_int16_t maxpaths_ibgp;
374 u_int16_t ibgp_flags;
5e242b0d 375#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 376 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 377
555e09d4
QY		 378 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
379 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
380
37a333fe
QY		 381 /* Automatic coalesce adjust on/off */
382 bool heuristic_coalesce;
14b8641a
QY		 383 /* Actual coalesce time */
384 uint32_t coalesce_time;
adbac85e 385
f26845f9
QY		 386 /* Auto-shutdown new peers */
387 bool autoshutdown;
388
d62a17ae 389 u_int32_t addpath_tx_id;
390 int addpath_tx_used[AFI_MAX][SAFI_MAX];
65efcfce
LB		 391
392#if ENABLE_BGP_VNC
d62a17ae 393 struct rfapi_cfg *rfapi_cfg;
394 struct rfapi *rfapi;
65efcfce 395#endif
19df7279 396
d62a17ae 397 /* EVPN related information */
14c1a7bf 398
d62a17ae 399 /* EVI hash table */
400 struct hash *vnihash;
14c1a7bf 401
1a98c087
MK		 402 /* EVPN enable - advertise gateway macip routes */
403 int advertise_gw_macip;
404
d62a17ae 405 /* EVPN enable - advertise local VNIs and their MACs etc. */
406 int advertise_all_vni;
14c1a7bf 407
d62a17ae 408 /* Hash table of Import RTs to EVIs */
409 struct hash *import_rt_hash;
14c1a7bf 410
10ebe1ab
MK		 411 /* Hash table of VRF import RTs to VRFs */
412 struct hash *vrf_import_rt_hash;
413
fe1dc5a3
MK		 414 /* L3-VNI corresponding to this vrf */
415 vni_t l3vni;
416
417 /* router-mac to be used in mac-ip routes for this vrf */
418 struct ethaddr rmac;
419
b67a60d2 420 /* originator ip - to be used as NH for type-5 routes */
421 struct in_addr originator_ip;
422
fe1dc5a3
MK		 423 /* vrf flags */
424 uint32_t vrf_flags;
676f83b9 425#define BGP_VRF_AUTO (1 << 0)
342dd0c6 426#define BGP_VRF_ADVERTISE_IPV4_IN_EVPN (1 << 1)
427#define BGP_VRF_ADVERTISE_IPV6_IN_EVPN (1 << 2)
428#define BGP_VRF_IMPORT_RT_CFGD (1 << 3)
429#define BGP_VRF_EXPORT_RT_CFGD (1 << 4)
430#define BGP_VRF_RD_CFGD (1 << 5)
c48d9f5f 431#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 6)
676f83b9 432
433 /* unique ID for auto derivation of RD for this vrf */
434 uint16_t vrf_rd_id;
435
436 /* RD for this VRF */
437 struct prefix_rd vrf_prd;
c581d8b0
MK		 438
439 /* import rt list for the vrf instance */
440 struct list *vrf_import_rtl;
441
442 /* export rt list for the vrf instance */
443 struct list *vrf_export_rtl;
fe1dc5a3 444
6a8657d0
MK		 445 /* list of corresponding l2vnis (struct bgpevpn) */
446 struct list *l2vnis;
447
53c84f78
MK		 448 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
449 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
450
d62a17ae 451 QOBJ_FIELDS
718e3744 452};
19df7279 453DECLARE_QOBJ_TYPE(bgp)
718e3744 454
2a3d5731 455#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 456
d62a17ae 457#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
458 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
459 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
460 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 461
718e3744 462/* BGP peer-group support. */
d62a17ae 463struct peer_group {
464 /* Name of the peer-group. */
465 char *name;
718e3744 466
d62a17ae 467 /* Pointer to BGP. */
468 struct bgp *bgp;
718e3744 469
d62a17ae 470 /* Peer-group client list. */
471 struct list *peer;
f14e6fdb 472
d62a17ae 473 /** Dynamic neighbor listening ranges */
474 struct list *listen_range[AFI_MAX];
475
476 /* Peer-group config */
477 struct peer *conf;
718e3744 478};
479
480/* BGP Notify message format. */
d62a17ae 481struct bgp_notify {
482 u_char code;
483 u_char subcode;
484 char *data;
485 bgp_size_t length;
486 u_char *raw_data;
718e3744 487};
488
489/* Next hop self address. */
d62a17ae 490struct bgp_nexthop {
491 struct interface *ifp;
492 struct in_addr v4;
493 struct in6_addr v6_global;
494 struct in6_addr v6_local;
718e3744 495};
496
a82478b9
DS		 497/* BGP addpath values */
498#define BGP_ADDPATH_RX 1
499#define BGP_ADDPATH_TX 2
500#define BGP_ADDPATH_ID_LEN 4
501
adbac85e
DW		 502#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
503
718e3744 504/* BGP router distinguisher value. */
505#define BGP_RD_SIZE 8
506
d62a17ae 507struct bgp_rd {
508 u_char val[BGP_RD_SIZE];
718e3744 509};
510
2a3d5731
DW		 511#define RMAP_IN 0
512#define RMAP_OUT 1
513#define RMAP_MAX 2
fee0f4c6 514
65efcfce
LB		 515#include "filter.h"
516
718e3744 517/* BGP filter structure. */
d62a17ae 518struct bgp_filter {
519 /* Distribute-list. */
520 struct {
521 char *name;
522 struct access_list *alist;
523 } dlist[FILTER_MAX];
524
525 /* Prefix-list. */
526 struct {
527 char *name;
528 struct prefix_list *plist;
529 } plist[FILTER_MAX];
530
531 /* Filter-list. */
532 struct {
533 char *name;
534 struct as_list *aslist;
535 } aslist[FILTER_MAX];
536
537 /* Route-map. */
538 struct {
539 char *name;
540 struct route_map *map;
541 } map[RMAP_MAX];
542
543 /* Unsuppress-map. */
544 struct {
545 char *name;
546 struct route_map *map;
547 } usmap;
718e3744 548};
549
6d85b15b
JBD		 550/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
551 a peer who's AS is part of our Confederation. */
d62a17ae 552typedef enum {
553 BGP_PEER_IBGP = 1,
554 BGP_PEER_EBGP,
555 BGP_PEER_INTERNAL,
556 BGP_PEER_CONFED,
6d85b15b
JBD		 557} bgp_peer_sort_t;
558
d6661008
DS		 559/* BGP message header and packet size. */
560#define BGP_MARKER_SIZE 16
561#define BGP_HEADER_SIZE 19
562#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 563#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 564
3f9c7369
DS		 565/*
566 * Trigger delay for bgp_announce_route().
567 */
568#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
569#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
570
d62a17ae 571struct peer_af {
572 /* back pointer to the peer */
573 struct peer *peer;
3f9c7369 574
d62a17ae 575 /* which subgroup the peer_af belongs to */
576 struct update_subgroup *subgroup;
3f9c7369 577
d62a17ae 578 /* for being part of an update subgroup's peer list */
579 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 580
d62a17ae 581 /* for being part of a packet's peer list */
582 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 583
d62a17ae 584 struct bpacket *next_pkt_to_send;
3f9c7369 585
d62a17ae 586 /*
587 * Trigger timer for bgp_announce_route().
588 */
589 struct thread *t_announce_route;
3f9c7369 590
d62a17ae 591 afi_t afi;
592 safi_t safi;
593 int afid;
3f9c7369
DS		 594};
595
718e3744 596/* BGP neighbor structure. */
d62a17ae 597struct peer {
598 /* BGP structure. */
599 struct bgp *bgp;
600
601 /* reference count, primarily to allow bgp_process'ing of route_node's
602 * to be done after a struct peer is deleted.
603 *
604 * named 'lock' for hysterical reasons within Quagga.
605 */
606 int lock;
607
608 /* BGP peer group. */
609 struct peer_group *group;
610 uint64_t version[AFI_MAX][SAFI_MAX];
611
612 /* BGP peer_af structures, per configured AF on this peer */
613 struct peer_af *peer_af_array[BGP_AF_MAX];
614
615 /* Peer's remote AS number. */
616 int as_type;
617 as_t as;
618
619 /* Peer's local AS number. */
620 as_t local_as;
621
622 bgp_peer_sort_t sort;
623
624 /* Peer's Change local AS number. */
625 as_t change_local_as;
626
627 /* Remote router ID. */
628 struct in_addr remote_id;
629
630 /* Local router ID. */
631 struct in_addr local_id;
632
633 /* Packet receive and send buffer. */
424ab01d
QY		 634 pthread_mutex_t io_mtx; // guards ibuf, obuf
635 struct stream_fifo *ibuf; // packets waiting to be processed
636 struct stream_fifo *obuf; // packets waiting to be written
637
74ffbfe6
QY		 638 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
639 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 640
641 struct stream *curr; // the current packet being parsed
d62a17ae 642
643 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 644 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 645 * actual packet is then constructed by concatenating the two.
646 */
647 struct stream *scratch;
648
649 /* the doppelganger peer structure, due to dual TCP conn setup */
650 struct peer *doppelganger;
651
652 /* Status of the peer. */
653 int status;
654 int ostatus;
655
656 /* FSM events, stored for debug purposes.
657 * Note: uchar used for reduced memory usage.
658 */
659 unsigned char cur_event;
660 unsigned char last_event;
661 unsigned char last_major_event;
662
663 /* Peer index, used for dumping TABLE_DUMP_V2 format */
664 uint16_t table_dump_index;
665
666 /* Peer information */
667 int fd; /* File descriptor */
668 int ttl; /* TTL of TCP connection to the peer. */
669 int rtt; /* Estimated round-trip-time from TCP_INFO */
670 int gtsm_hops; /* minimum hopcount to peer */
671 char *desc; /* Description of the peer. */
672 unsigned short port; /* Destination port for peer */
673 char *host; /* Printable address of the peer. */
674 union sockunion su; /* Sockunion address of the peer. */
a80beece 675#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 676 time_t uptime; /* Last Up/Down time */
677 time_t readtime; /* Last read time */
678 time_t resettime; /* Last reset time */
679
d62a17ae 680 char *conf_if; /* neighbor interface config name. */
681 struct interface *ifp; /* corresponding interface */
682 char *ifname; /* bind interface name. */
683 char *update_if;
684 union sockunion *update_source;
685
686 union sockunion *su_local; /* Sockunion of local address. */
687 union sockunion *su_remote; /* Sockunion of remote address. */
688 int shared_network; /* Is this peer shared same network. */
689 struct bgp_nexthop nexthop; /* Nexthop */
690
691 /* Peer address family configuration. */
692 u_char afc[AFI_MAX][SAFI_MAX];
693 u_char afc_nego[AFI_MAX][SAFI_MAX];
694 u_char afc_adv[AFI_MAX][SAFI_MAX];
695 u_char afc_recv[AFI_MAX][SAFI_MAX];
696
697 /* Capability flags (reset in bgp_stop) */
698 u_int32_t cap;
718e3744 699#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
700#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
701#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
702#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
703#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 704#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
705#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 706#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
707#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 708#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
709#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 710#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
711#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 712#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
713#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 714#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
715#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 716
d62a17ae 717 /* Capability flags (reset in bgp_stop) */
718 u_int32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 719#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
720#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
721#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
722#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
723#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
724#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 725#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
726#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 727#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
728#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
729#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
730#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 731#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
732#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
733#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 734
d62a17ae 735 /* Global configuration flags. */
736 u_int32_t flags;
718e3744 737#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
738#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
739#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
740#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
741#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 742#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 743#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 744#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 745#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 746#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
747#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 748#define PEER_FLAG_LONESOUL (1 << 11)
749#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
750#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 751#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
65efcfce 752#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
02a82b47 753
d62a17ae 754 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
755 char *tx_shutdown_message;
718e3744 756
d62a17ae 757 /* NSF mode (graceful restart) */
758 u_char nsf[AFI_MAX][SAFI_MAX];
93406d87 759
d62a17ae 760 /* Per AF configuration flags. */
761 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 762#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
763#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
764#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
765#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
766#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
767#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
768#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
769#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
770#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
771#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
772#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
773#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
774#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
775#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
776#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
777#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 778#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 779#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 780#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
781#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 782#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 783#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 784#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 785#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
d93f7ffc 786#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 787#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 788#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 789
d62a17ae 790 /* MD5 password */
791 char *password;
718e3744 792
d62a17ae 793 /* default-originate route-map. */
794 struct {
795 char *name;
796 struct route_map *map;
797 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 798
d62a17ae 799 /* Peer status flags. */
800 u_int16_t sflags;
718e3744 801#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
802#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
803#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
804#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
805#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 806#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
807#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 808
d62a17ae 809 /* Peer status af flags (reset in bgp_stop) */
810 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 811#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
812#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 813#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
814#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
815#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
816#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 817
d62a17ae 818 /* Default attribute value for the peer. */
819 u_int32_t config;
d93f7ffc
DW		 820#define PEER_CONFIG_TIMER (1 << 0) /* keepalive & holdtime */
821#define PEER_CONFIG_CONNECT (1 << 1) /* connect */
822#define PEER_CONFIG_ROUTEADV (1 << 2) /* route advertise */
d25e4efc
DS		 823#define PEER_GROUP_CONFIG_TIMER (1 << 3) /* timers from peer-group */
824
a4d82a8a
PZ		 825#define PEER_OR_GROUP_TIMER_SET(peer) \
826 (CHECK_FLAG(peer->config, PEER_CONFIG_TIMER) \
d25e4efc 827 || CHECK_FLAG(peer->config, PEER_GROUP_CONFIG_TIMER))
8ffedcea 828
1588f6f4
QY		 829 _Atomic uint32_t holdtime;
830 _Atomic uint32_t keepalive;
831 _Atomic uint32_t connect;
832 _Atomic uint32_t routeadv;
d62a17ae 833
834 /* Timer values. */
1588f6f4
QY		 835 _Atomic uint32_t v_start;
836 _Atomic uint32_t v_connect;
837 _Atomic uint32_t v_holdtime;
838 _Atomic uint32_t v_keepalive;
839 _Atomic uint32_t v_routeadv;
840 _Atomic uint32_t v_pmax_restart;
841 _Atomic uint32_t v_gr_restart;
d62a17ae 842
843 /* Threads. */
844 struct thread *t_read;
424ab01d 845 struct thread *t_write;
d62a17ae 846 struct thread *t_start;
387f984e
QY		 847 struct thread *t_connect_check_r;
848 struct thread *t_connect_check_w;
d62a17ae 849 struct thread *t_connect;
850 struct thread *t_holdtime;
d62a17ae 851 struct thread *t_routeadv;
852 struct thread *t_pmax_restart;
853 struct thread *t_gr_restart;
854 struct thread *t_gr_stale;
56257a44 855 struct thread *t_generate_updgrp_packets;
424ab01d 856 struct thread *t_process_packet;
d62a17ae 857
49507a6f 858 /* Thread flags. */
1588f6f4 859 _Atomic uint16_t thread_flags;
b750b0ba
QY		 860#define PEER_THREAD_WRITES_ON (1 << 0)
861#define PEER_THREAD_READS_ON (1 << 1)
862#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 863 /* workqueues */
864 struct work_queue *clear_node_queue;
865
a4d82a8a
PZ		 866#define PEER_TOTAL_RX(peer) \
867 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
868 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
869 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
870 + atomic_load_explicit(&peer->refresh_in, \
871 memory_order_relaxed) \
872 + atomic_load_explicit(&peer->keepalive_in, \
873 memory_order_relaxed) \
874 + atomic_load_explicit(&peer->dynamic_cap_in, \
875 memory_order_relaxed)
876
877#define PEER_TOTAL_TX(peer) \
878 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
879 + atomic_load_explicit(&peer->update_out, \
880 memory_order_relaxed) \
881 + atomic_load_explicit(&peer->notify_out, \
882 memory_order_relaxed) \
883 + atomic_load_explicit(&peer->refresh_out, \
884 memory_order_relaxed) \
885 + atomic_load_explicit(&peer->keepalive_out, \
886 memory_order_relaxed) \
887 + atomic_load_explicit(&peer->dynamic_cap_out, \
888 memory_order_relaxed)
0112e9e0 889
d62a17ae 890 /* Statistics field */
996c9314
LB		 891 _Atomic uint32_t open_in; /* Open message input count */
892 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 893 _Atomic uint32_t update_in; /* Update message input count */
894 _Atomic uint32_t update_out; /* Update message ouput count */
895 _Atomic time_t update_time; /* Update message received time. */
896 _Atomic uint32_t keepalive_in; /* Keepalive input count */
897 _Atomic uint32_t keepalive_out; /* Keepalive output count */
898 _Atomic uint32_t notify_in; /* Notify input count */
899 _Atomic uint32_t notify_out; /* Notify output count */
900 _Atomic uint32_t refresh_in; /* Route Refresh input count */
901 _Atomic uint32_t refresh_out; /* Route Refresh output count */
902 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 903 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 904
905 /* BGP state count */
906 u_int32_t established; /* Established */
907 u_int32_t dropped; /* Dropped */
908
909 /* Update delay related fields */
910 u_char update_delay_over; /* When this is set, BGP is no more waiting
911 for EOR */
912
913 /* Syncronization list and time. */
914 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
915 time_t synctime;
1588f6f4
QY		 916 /* timestamp when the last UPDATE msg was written */
917 _Atomic time_t last_write;
918 /* timestamp when the last msg was written */
919 _Atomic time_t last_update;
d62a17ae 920
921 /* Send prefix count. */
922 unsigned long scount[AFI_MAX][SAFI_MAX];
923
d62a17ae 924 /* Notify data. */
925 struct bgp_notify notify;
926
d62a17ae 927 /* Filter structure. */
928 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
929
930 /* ORF Prefix-list */
931 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
932
933 /* Text description of last attribute rcvd */
934 char rcvd_attr_str[BUFSIZ];
935
936 /* Track if we printed the attribute in debugs */
937 int rcvd_attr_printed;
938
939 /* Prefix count. */
940 unsigned long pcount[AFI_MAX][SAFI_MAX];
941
942 /* Max prefix count. */
943 unsigned long pmax[AFI_MAX][SAFI_MAX];
944 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
945 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 946#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 947
d62a17ae 948 /* allowas-in. */
949 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 950
d62a17ae 951 /* weight */
952 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 953
d62a17ae 954 /* peer reset cause */
955 char last_reset;
e0701b79 956#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
957#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
958#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
959#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
960#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
961#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
962#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
963#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
964#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
965#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
966#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
967#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
968#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
969#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
970#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
971#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
972#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
973#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
974#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
975#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
976#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 977#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 978#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 979#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 980#define PEER_DOWN_IF_DOWN 25 /* Interface down */
981#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 982 unsigned long last_reset_cause_size;
983 u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 984
d62a17ae 985 /* The kind of route-map Flags.*/
986 u_char rmap_type;
ac41b2a2 987#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
988#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
989#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
990#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
991#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
992#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 993#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
994#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 995
d62a17ae 996 /* peer specific BFD information */
997 struct bfd_info *bfd_info;
04b6bdc0 998
d62a17ae 999 /* hostname and domainname advertised by host */
1000 char *hostname;
1001 char *domainname;
19df7279 1002
d62a17ae 1003 QOBJ_FIELDS
718e3744 1004};
19df7279 1005DECLARE_QOBJ_TYPE(peer)
718e3744 1006
ad4cbda1 1007/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1008#define BGP_PEER_START_SUPPRESSED(P) \
1009 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1010 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1011
0df7c91f
PJ		 1012#define PEER_PASSWORD_MINLEN (1)
1013#define PEER_PASSWORD_MAXLEN (80)
1014
718e3744 1015/* This structure's member directly points incoming packet data
1016 stream. */
d62a17ae 1017struct bgp_nlri {
1018 /* AFI. */
a46a2e9b 1019 uint16_t afi; /* iana_afi_t */
718e3744 1020
d62a17ae 1021 /* SAFI. */
a46a2e9b 1022 uint8_t safi; /* iana_safi_t */
718e3744 1023
d62a17ae 1024 /* Pointer to NLRI byte stream. */
1025 u_char *nlri;
718e3744 1026
d62a17ae 1027 /* Length of whole NLRI. */
1028 bgp_size_t length;
718e3744 1029};
1030
1031/* BGP versions. */
1032#define BGP_VERSION_4 4
718e3744 1033
1034/* Default BGP port number. */
1035#define BGP_PORT_DEFAULT 179
1036
718e3744 1037/* BGP minimum message size. */
1038#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1039#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1040#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1041#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1042#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1043#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1044
1045/* BGP message types. */
1046#define BGP_MSG_OPEN 1
1047#define BGP_MSG_UPDATE 2
1048#define BGP_MSG_NOTIFY 3
1049#define BGP_MSG_KEEPALIVE 4
1050#define BGP_MSG_ROUTE_REFRESH_NEW 5
1051#define BGP_MSG_CAPABILITY 6
1052#define BGP_MSG_ROUTE_REFRESH_OLD 128
1053
1054/* BGP open optional parameter. */
1055#define BGP_OPEN_OPT_AUTH 1
1056#define BGP_OPEN_OPT_CAP 2
1057
1058/* BGP4 attribute type codes. */
1059#define BGP_ATTR_ORIGIN 1
1060#define BGP_ATTR_AS_PATH 2
1061#define BGP_ATTR_NEXT_HOP 3
1062#define BGP_ATTR_MULTI_EXIT_DISC 4
1063#define BGP_ATTR_LOCAL_PREF 5
1064#define BGP_ATTR_ATOMIC_AGGREGATE 6
1065#define BGP_ATTR_AGGREGATOR 7
1066#define BGP_ATTR_COMMUNITIES 8
1067#define BGP_ATTR_ORIGINATOR_ID 9
1068#define BGP_ATTR_CLUSTER_LIST 10
1069#define BGP_ATTR_DPA 11
1070#define BGP_ATTR_ADVERTISER 12
1071#define BGP_ATTR_RCID_PATH 13
1072#define BGP_ATTR_MP_REACH_NLRI 14
1073#define BGP_ATTR_MP_UNREACH_NLRI 15
1074#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1075#define BGP_ATTR_AS4_PATH 17
1076#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1077#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1078#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1079#define BGP_ATTR_ENCAP 23
57d187bc 1080#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1081#define BGP_ATTR_PREFIX_SID 40
65efcfce
LB		 1082#if ENABLE_BGP_VNC
1083#define BGP_ATTR_VNC 255
1084#endif
718e3744 1085
1086/* BGP update origin. */
1087#define BGP_ORIGIN_IGP 0
1088#define BGP_ORIGIN_EGP 1
1089#define BGP_ORIGIN_INCOMPLETE 2
1090
1091/* BGP notify message codes. */
1092#define BGP_NOTIFY_HEADER_ERR 1
1093#define BGP_NOTIFY_OPEN_ERR 2
1094#define BGP_NOTIFY_UPDATE_ERR 3
1095#define BGP_NOTIFY_HOLD_ERR 4
1096#define BGP_NOTIFY_FSM_ERR 5
1097#define BGP_NOTIFY_CEASE 6
1098#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1099
4b4e07d2
DT		 1100#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1101
718e3744 1102/* BGP_NOTIFY_HEADER_ERR sub codes. */
1103#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1104#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1105#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1106
1107/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1108#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1109#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1110#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1111#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1112#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1113#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1114#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1115#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1116
1117/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1118#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1119#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1120#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1121#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1122#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1123#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1124#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1125#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1126#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1127#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1128#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1129
4b4e07d2 1130/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1131#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1132#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1133#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1134#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1135#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1136#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1137#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1138#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1139
1140/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1141#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1142#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1143#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1144
1145/* BGP finite state machine status. */
1146#define Idle 1
1147#define Connect 2
1148#define Active 3
1149#define OpenSent 4
1150#define OpenConfirm 5
1151#define Established 6
ca058a30
PJ		 1152#define Clearing 7
1153#define Deleted 8
1154#define BGP_STATUS_MAX 9
718e3744 1155
1156/* BGP finite state machine events. */
1157#define BGP_Start 1
1158#define BGP_Stop 2
1159#define TCP_connection_open 3
1160#define TCP_connection_closed 4
1161#define TCP_connection_open_failed 5
1162#define TCP_fatal_error 6
1163#define ConnectRetry_timer_expired 7
1164#define Hold_Timer_expired 8
1165#define KeepAlive_timer_expired 9
1166#define Receive_OPEN_message 10
1167#define Receive_KEEPALIVE_message 11
1168#define Receive_UPDATE_message 12
1169#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1170#define Clearing_Completed 14
1171#define BGP_EVENTS_MAX 15
718e3744 1172
1173/* BGP timers default value. */
8efe88ea 1174/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1175#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1176#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1177#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1178#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1179#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1180#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1181
1182/* BGP default local preference. */
1183#define BGP_DEFAULT_LOCAL_PREF 100
1184
7f323236
DW		 1185/* BGP local-preference to send when 'bgp graceful-shutdown'
1186 * is configured */
1187#define BGP_GSHUT_LOCAL_PREF 0
1188
3f9c7369
DS		 1189/* BGP default subgroup packet queue max . */
1190#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1191
538621f2 1192/* BGP graceful restart */
1193#define BGP_DEFAULT_RESTART_TIME 120
1194#define BGP_DEFAULT_STALEPATH_TIME 360
1195
718e3744 1196/* BGP uptime string length. */
1197#define BGP_UPTIME_LEN 25
1198
1199/* Default configuration settings for bgpd. */
1200#define BGP_VTY_PORT 2605
718e3744 1201#define BGP_DEFAULT_CONFIG "bgpd.conf"
1202
1203/* Check AS path loop when we send NLRI. */
1204/* #define BGP_SEND_ASPATH_CHECK */
1205
f14e6fdb
DS		 1206/* BGP Dynamic Neighbors feature */
1207#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1208#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1209#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1210
718e3744 1211/* Flag for peer_clear_soft(). */
d62a17ae 1212enum bgp_clear_type {
1213 BGP_CLEAR_SOFT_NONE,
1214 BGP_CLEAR_SOFT_OUT,
1215 BGP_CLEAR_SOFT_IN,
1216 BGP_CLEAR_SOFT_BOTH,
1217 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1218};
1219
1220/* Macros. */
424ab01d 1221#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1222#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1223#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1224 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1225
718e3744 1226/* BGP error codes. */
1227#define BGP_SUCCESS 0
1228#define BGP_ERR_INVALID_VALUE -1
1229#define BGP_ERR_INVALID_FLAG -2
1230#define BGP_ERR_INVALID_AS -3
1231#define BGP_ERR_INVALID_BGP -4
1232#define BGP_ERR_PEER_GROUP_MEMBER -5
1233#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1234#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1235#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1236#define BGP_ERR_PEER_GROUP_MISMATCH -9
1237#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1238#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1239#define BGP_ERR_AS_MISMATCH -12
1240#define BGP_ERR_PEER_FLAG_CONFLICT -13
1241#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1242#define BGP_ERR_PEER_FILTER_CONFLICT -15
1243#define BGP_ERR_NOT_INTERNAL_PEER -16
1244#define BGP_ERR_REMOVE_PRIVATE_AS -17
1245#define BGP_ERR_AF_UNCONFIGURED -18
1246#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1247#define BGP_ERR_INSTANCE_MISMATCH -20
1248#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1249#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1250#define BGP_ERR_TCPSIG_FAILED -23
1251#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1252#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1253#define BGP_ERR_NO_INTERFACE_CONFIG -26
1254#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1255#define BGP_ERR_AS_OVERRIDE -28
1256#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1257#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1258#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1259#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1260#define BGP_ERR_MAX -33
63fa10b5 1261#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1262#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1263
3f9c7369
DS		 1264/*
1265 * Enumeration of different policy kinds a peer can be configured with.
1266 */
d62a17ae 1267typedef enum {
1268 BGP_POLICY_ROUTE_MAP,
1269 BGP_POLICY_FILTER_LIST,
1270 BGP_POLICY_PREFIX_LIST,
1271 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1272} bgp_policy_type_e;
1273
718e3744 1274extern struct bgp_master *bm;
37fe7731 1275extern unsigned int multipath_num;
718e3744 1276
718e3744 1277/* Prototypes. */
d62a17ae 1278extern void bgp_terminate(void);
1279extern void bgp_reset(void);
1280extern time_t bgp_clock(void);
1281extern void bgp_zclient_reset(void);
1282extern int bgp_nexthop_set(union sockunion *, union sockunion *,
1283 struct bgp_nexthop *, struct peer *);
1284extern struct bgp *bgp_get_default(void);
1285extern struct bgp *bgp_lookup(as_t, const char *);
1286extern struct bgp *bgp_lookup_by_name(const char *);
1287extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1288extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1289extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1290extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1291extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1292extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1293extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1294extern struct peer_group *peer_group_get(struct bgp *, const char *);
1295extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1296 union sockunion *,
1297 struct peer_group *);
1298extern struct prefix *
1299peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1300extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1301 struct prefix *,
1302 struct prefix **);
1303extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1304 union sockunion *);
1305extern void peer_drop_dynamic_neighbor(struct peer *);
28066f4b
DS		 1306
1307/*
1308 * Peers are incredibly easy to memory leak
1309 * due to the various ways that they are actually used
1310 * Provide some functionality to debug locks and unlocks
1311 */
1312extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1313extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1314#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1315#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1316
d62a17ae 1317extern bgp_peer_sort_t peer_sort(struct peer *peer);
1318extern int peer_active(struct peer *);
1319extern int peer_active_nego(struct peer *);
1320extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1321extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1322 as_t, as_t, int, afi_t, safi_t,
1323 struct peer_group *);
1324extern struct peer *peer_create_accept(struct bgp *);
1325extern void peer_xfer_config(struct peer *dst, struct peer *src);
1326extern char *peer_uptime(time_t, char *, size_t, u_char, json_object *);
856ca177 1327
d62a17ae 1328extern int bgp_config_write(struct vty *);
6b0655a2 1329
d62a17ae 1330extern void bgp_master_init(struct thread_master *master);
718e3744 1331
d62a17ae 1332extern void bgp_init(void);
419dfe6a 1333extern void bgp_pthreads_run(void);
2d4ee774 1334extern void bgp_pthreads_finish(void);
d62a17ae 1335extern void bgp_route_map_init(void);
1336extern void bgp_session_reset(struct peer *);
718e3744 1337
d62a17ae 1338extern int bgp_option_set(int);
1339extern int bgp_option_unset(int);
1340extern int bgp_option_check(int);
718e3744 1341
d62a17ae 1342extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1343extern void bgp_instance_up(struct bgp *);
1344extern void bgp_instance_down(struct bgp *);
1345extern int bgp_delete(struct bgp *);
718e3744 1346
e5619c28
PG		 1347extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1348 vrf_id_t old_vrf_id, bool create);
1349
d62a17ae 1350extern int bgp_flag_set(struct bgp *, int);
1351extern int bgp_flag_unset(struct bgp *, int);
1352extern int bgp_flag_check(struct bgp *, int);
718e3744 1353
d62a17ae 1354extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1355extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1356
d62a17ae 1357extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1358extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1359
d62a17ae 1360extern int bgp_confederation_id_set(struct bgp *, as_t);
1361extern int bgp_confederation_id_unset(struct bgp *);
1362extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1363
d62a17ae 1364extern int bgp_confederation_peers_add(struct bgp *, as_t);
1365extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1366
d62a17ae 1367extern int bgp_timers_set(struct bgp *, u_int32_t keepalive,
1368 u_int32_t holdtime);
1369extern int bgp_timers_unset(struct bgp *);
718e3744 1370
d62a17ae 1371extern int bgp_default_local_preference_set(struct bgp *, u_int32_t);
1372extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1373
d62a17ae 1374extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, u_int32_t);
1375extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1376
d62a17ae 1377extern int bgp_listen_limit_set(struct bgp *, int);
1378extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1379
d62a17ae 1380extern int bgp_update_delay_active(struct bgp *);
1381extern int bgp_update_delay_configured(struct bgp *);
318cac96 1382extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1383extern void peer_as_change(struct peer *, as_t, int);
1384extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1385 int, afi_t, safi_t);
1386extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1387extern int peer_delete(struct peer *peer);
1388extern int peer_group_delete(struct peer_group *);
1389extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1390extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1391
d62a17ae 1392extern int peer_activate(struct peer *, afi_t, safi_t);
1393extern int peer_deactivate(struct peer *, afi_t, safi_t);
1394extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1395
d62a17ae 1396extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1397 struct peer_group *, as_t *);
1398extern int peer_group_unbind(struct bgp *, struct peer *, struct peer_group *);
718e3744 1399
d62a17ae 1400extern int peer_flag_set(struct peer *, u_int32_t);
1401extern int peer_flag_unset(struct peer *, u_int32_t);
718e3744 1402
d62a17ae 1403extern int peer_af_flag_set(struct peer *, afi_t, safi_t, u_int32_t);
1404extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, u_int32_t);
1405extern int peer_af_flag_check(struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1406
d62a17ae 1407extern int peer_ebgp_multihop_set(struct peer *, int);
1408extern int peer_ebgp_multihop_unset(struct peer *);
1409extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1410
d62a17ae 1411extern int peer_description_set(struct peer *, const char *);
1412extern int peer_description_unset(struct peer *);
718e3744 1413
d62a17ae 1414extern int peer_update_source_if_set(struct peer *, const char *);
1415extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1416extern int peer_update_source_unset(struct peer *);
718e3744 1417
d62a17ae 1418extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1419 const char *);
1420extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1421
d62a17ae 1422extern int peer_port_set(struct peer *, u_int16_t);
1423extern int peer_port_unset(struct peer *);
718e3744 1424
d62a17ae 1425extern int peer_weight_set(struct peer *, afi_t, safi_t, u_int16_t);
1426extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1427
d62a17ae 1428extern int peer_timers_set(struct peer *, u_int32_t keepalive,
1429 u_int32_t holdtime);
1430extern int peer_timers_unset(struct peer *);
718e3744 1431
d62a17ae 1432extern int peer_timers_connect_set(struct peer *, u_int32_t);
1433extern int peer_timers_connect_unset(struct peer *);
718e3744 1434
d62a17ae 1435extern int peer_advertise_interval_set(struct peer *, u_int32_t);
1436extern int peer_advertise_interval_unset(struct peer *);
718e3744 1437
d62a17ae 1438extern void peer_interface_set(struct peer *, const char *);
1439extern void peer_interface_unset(struct peer *);
718e3744 1440
d62a17ae 1441extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1442extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1443
d62a17ae 1444extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1445extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1446
d62a17ae 1447extern int peer_local_as_set(struct peer *, as_t, int, int);
1448extern int peer_local_as_unset(struct peer *);
718e3744 1449
d62a17ae 1450extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1451 const char *);
1452extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1453
d62a17ae 1454extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1455extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1456
d62a17ae 1457extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1458extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1459
d62a17ae 1460extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
0df7c91f 1461
d62a17ae 1462extern int peer_password_set(struct peer *, const char *);
1463extern int peer_password_unset(struct peer *);
0df7c91f 1464
d62a17ae 1465extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1466
d62a17ae 1467extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, u_int32_t,
1468 u_char, int, u_int16_t);
1469extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1470
d62a17ae 1471extern int peer_clear(struct peer *, struct listnode **);
1472extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1473
d62a17ae 1474extern int peer_ttl_security_hops_set(struct peer *, int);
1475extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1476
d62a17ae 1477extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1478extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1479
d62a17ae 1480extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1481extern void bgp_route_map_terminate(void);
16286195 1482
d62a17ae 1483extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1484
5c525538 1485extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1486 afi_t *afi, safi_t *safi);
1487extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1488 iana_afi_t *pkt_afi,
1489 iana_safi_t *pkt_safi);
9cabb64b 1490
d62a17ae 1491extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1492extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1493extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1494
ffd0c037 1495extern void bgp_close(void);
92375c91
JB		 1496extern void bgp_free(struct bgp *);
1497
1498static inline struct bgp *bgp_lock(struct bgp *bgp)
1499{
1500 bgp->lock++;
1501 return bgp;
1502}
1503
1504static inline void bgp_unlock(struct bgp *bgp)
1505{
1506 assert(bgp->lock > 0);
1507 if (--bgp->lock == 0)
1508 bgp_free(bgp);
1509}
ffd0c037 1510
d62a17ae 1511static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1512{
d62a17ae 1513 switch (afi) {
1514 case AFI_IP:
1515 switch (safi) {
1516 case SAFI_UNICAST:
1517 return BGP_AF_IPV4_UNICAST;
1518 break;
1519 case SAFI_MULTICAST:
1520 return BGP_AF_IPV4_MULTICAST;
1521 break;
1522 case SAFI_LABELED_UNICAST:
1523 return BGP_AF_IPV4_LBL_UNICAST;
1524 break;
1525 case SAFI_MPLS_VPN:
1526 return BGP_AF_IPV4_VPN;
1527 break;
1528 case SAFI_ENCAP:
1529 return BGP_AF_IPV4_ENCAP;
1530 break;
1531 default:
1532 return BGP_AF_MAX;
1533 break;
1534 }
1535 break;
1536 case AFI_IP6:
1537 switch (safi) {
1538 case SAFI_UNICAST:
1539 return BGP_AF_IPV6_UNICAST;
1540 break;
1541 case SAFI_MULTICAST:
1542 return BGP_AF_IPV6_MULTICAST;
1543 break;
1544 case SAFI_LABELED_UNICAST:
1545 return BGP_AF_IPV6_LBL_UNICAST;
1546 break;
1547 case SAFI_MPLS_VPN:
1548 return BGP_AF_IPV6_VPN;
1549 break;
1550 case SAFI_ENCAP:
1551 return BGP_AF_IPV6_ENCAP;
1552 break;
1553 default:
1554 return BGP_AF_MAX;
1555 break;
1556 }
1557 break;
1558 case AFI_L2VPN:
1559 switch (safi) {
1560 case SAFI_EVPN:
1561 return BGP_AF_L2VPN_EVPN;
1562 break;
1563 default:
1564 return BGP_AF_MAX;
1565 break;
1566 }
3f9c7369 1567 default:
d62a17ae 1568 return BGP_AF_MAX;
1569 break;
3f9c7369 1570 }
3f9c7369
DS		 1571}
1572
c8560b44 1573/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1574static inline int peer_group_active(struct peer *peer)
3f9c7369 1575{
d62a17ae 1576 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1577 return 1;
1578 return 0;
3f9c7369
DS		 1579}
1580
1581/* If peer is negotiated at least one address family return 1. */
d62a17ae 1582static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1583{
d62a17ae 1584 if (peer->afc_nego[afi][SAFI_UNICAST]
1585 || peer->afc_nego[afi][SAFI_MULTICAST]
1586 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1587 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1588 || peer->afc_nego[afi][SAFI_ENCAP]
1589 || peer->afc_nego[afi][SAFI_EVPN])
1590 return 1;
1591 return 0;
3f9c7369
DS		 1592}
1593
f14e6fdb 1594/* If at least one address family activated for group, return 1. */
d62a17ae 1595static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1596{
d62a17ae 1597 struct peer *peer = group->conf;
1598
1599 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1600 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
1601 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1602 || peer->afc[AFI_IP6][SAFI_UNICAST]
1603 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1604 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1605 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1606 || peer->afc[AFI_IP6][SAFI_ENCAP]
1607 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1608 return 1;
1609 return 0;
f14e6fdb
DS		 1610}
1611
d62a17ae 1612static inline char *timestamp_string(time_t ts)
3f9c7369 1613{
d62a17ae 1614 time_t tbuf;
1615 tbuf = time(NULL) - (bgp_clock() - ts);
1616 return ctime(&tbuf);
3f9c7369
DS		 1617}
1618
d62a17ae 1619static inline int peer_established(struct peer *peer)
3f9c7369 1620{
d62a17ae 1621 if (peer->status == Established)
1622 return 1;
1623 return 0;
3f9c7369
DS		 1624}
1625
d62a17ae 1626static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1627{
d62a17ae 1628 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1629}
1630
d62a17ae 1631static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1632{
d62a17ae 1633 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1634}
1635
d1be1f08 1636/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1637static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1638{
d62a17ae 1639 struct vrf *vrf;
d1be1f08 1640
d62a17ae 1641 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1642 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1643 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1644 vrf = vrf_lookup_by_name(bgp->name);
1645 else
1646 vrf = NULL;
d1be1f08 1647
d62a17ae 1648 return vrf;
d1be1f08 1649}
1650
1651/* Link BGP instance to VRF. */
d62a17ae 1652static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1653{
d62a17ae 1654 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1655 if (vrf->info != (void *)bgp)
1656 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1657}
1658
1659/* Unlink BGP instance from VRF. */
d62a17ae 1660static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1661{
d62a17ae 1662 if (vrf->info == (void *)bgp) {
1663 vrf->info = NULL;
1664 bgp_unlock(bgp);
1665 }
1666 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1667}
1668
d62a17ae 1669extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1670
1671/* For benefit of rfapi */
d62a17ae 1672extern struct peer *peer_new(struct bgp *bgp);
65efcfce 1673
00d252cb 1674#endif /* _QUAGGA_BGPD_H */
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