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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
2b9bcf30 27#include "hook.h"
1ac267a2 28#include "frr_pthread.h"
856ca177 29#include "lib/json.h"
6aeb9e78 30#include "vrf.h"
94c60424 31#include "vty.h"
17136bf2 32#include "iana_afi.h"
6aeb9e78 33
718e3744 34/* For union sockunion. */
3f9c7369 35#include "queue.h"
718e3744 36#include "sockunion.h"
518f0eb1 37#include "routemap.h"
ffd0c037 38#include "linklist.h"
8efe88ea 39#include "defaults.h"
4a1ab8e4 40#include "bgp_memory.h"
14c1a7bf 41#include "bitfield.h"
fe1dc5a3 42#include "vxlan.h"
955bfd98 43#include "bgp_labelpool.h"
dcc68b5e 44#include "bgp_addpath_types.h"
718e3744 45
04b6bdc0 46#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 47#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 48
5c81b96a 49/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
50#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
51
3f9c7369
DS		 52struct update_subgroup;
53struct bpacket;
4762c213 54struct bgp_pbr_config;
3f9c7369 55
0299c004
DS		 56/*
57 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 58 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
59 * behavior
0299c004
DS		 60 * in the system.
61 */
d62a17ae 62enum { AS_UNSPECIFIED = 0,
63 AS_SPECIFIED,
64 AS_INTERNAL,
65 AS_EXTERNAL,
0299c004
DS		 66};
67
718e3744 68/* Typedef BGP specific types. */
d7c0a89a
QY		 69typedef uint32_t as_t;
70typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
71typedef uint16_t bgp_size_t;
718e3744 72
d62a17ae 73#define max(a, b) \
74 ({ \
75 __typeof__(a) _a = (a); \
76 __typeof__(b) _b = (b); \
77 _a > _b ? _a : _b; \
78 })
79
80enum bgp_af_index {
81 BGP_AF_START,
82 BGP_AF_IPV4_UNICAST = BGP_AF_START,
83 BGP_AF_IPV4_MULTICAST,
84 BGP_AF_IPV4_VPN,
85 BGP_AF_IPV6_UNICAST,
86 BGP_AF_IPV6_MULTICAST,
87 BGP_AF_IPV6_VPN,
88 BGP_AF_IPV4_ENCAP,
89 BGP_AF_IPV6_ENCAP,
90 BGP_AF_L2VPN_EVPN,
91 BGP_AF_IPV4_LBL_UNICAST,
92 BGP_AF_IPV6_LBL_UNICAST,
7c40bf39 93 BGP_AF_IPV4_FLOWSPEC,
94 BGP_AF_IPV6_FLOWSPEC,
d62a17ae 95 BGP_AF_MAX
3f9c7369
DS		 96};
97
d62a17ae 98#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 99
d62a17ae 100#define FOREACH_AFI_SAFI(afi, safi) \
101 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
102 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 103
d1927ebe
AS		 104#define FOREACH_SAFI(safi) \
105 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 106
1ac267a2
DL		 107extern struct frr_pthread *bgp_pth_io;
108extern struct frr_pthread *bgp_pth_ka;
109
718e3744 110/* BGP master for system wide configurations and variables. */
d62a17ae 111struct bgp_master {
112 /* BGP instance list. */
113 struct list *bgp;
114
115 /* BGP thread master. */
116 struct thread_master *master;
718e3744 117
d62a17ae 118 /* work queues */
119 struct work_queue *process_main_queue;
87d4a781 120
d62a17ae 121 /* Listening sockets */
122 struct list *listen_sockets;
718e3744 123
d62a17ae 124 /* BGP port number. */
d7c0a89a 125 uint16_t port;
3a02d1f7 126
d62a17ae 127 /* Listener address */
128 char *address;
718e3744 129
48ecf8f5
DS		 130 /* The Mac table */
131 struct hash *self_mac_hash;
132
d62a17ae 133 /* BGP start time. */
134 time_t start_time;
135
136 /* Various BGP global configuration. */
d7c0a89a 137 uint8_t options;
718e3744 138#define BGP_OPT_NO_FIB (1 << 0)
d8a9922d
DS		 139#define BGP_OPT_NO_LISTEN (1 << 1)
140#define BGP_OPT_NO_ZEBRA (1 << 2)
3f9c7369 141
d62a17ae 142 uint64_t updgrp_idspace;
143 uint64_t subgrp_idspace;
5fe9f963 144
d62a17ae 145 /* timer to dampen route map changes */
146 struct thread *t_rmap_update; /* Handle route map updates */
d7c0a89a 147 uint32_t rmap_update_timer; /* Route map update timer */
5fe9f963 148#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 149
e9eb5f63 150 /* Id space for automatic RD derivation for an EVI/VRF */
151 bitfield_t rd_idspace;
152
955bfd98
PZ		 153 /* dynamic mpls label allocation pool */
154 struct labelpool labelpool;
155
e2f3a930
T		 156 /* BGP-EVPN VRF ID. Defaults to default VRF (if any) */
157 struct bgp* bgp_evpn;
158
c2d020ad
DS		 159 /* How big should we set the socket buffer size */
160 uint32_t socket_buffer;
161
97b4a0ec 162 bool terminating; /* global flag that sigint terminate seen */
d62a17ae 163 QOBJ_FIELDS
718e3744 164};
19df7279 165DECLARE_QOBJ_TYPE(bgp_master)
718e3744 166
73ac8160 167/* BGP route-map structure. */
d62a17ae 168struct bgp_rmap {
169 char *name;
170 struct route_map *map;
73ac8160
DS		 171};
172
d62a17ae 173struct bgp_redist {
d7c0a89a 174 unsigned short instance;
7c8ff89e 175
d62a17ae 176 /* BGP redistribute metric configuration. */
d7c0a89a
QY		 177 uint8_t redist_metric_flag;
178 uint32_t redist_metric;
7c8ff89e 179
d62a17ae 180 /* BGP redistribute route-map. */
181 struct bgp_rmap rmap;
7c8ff89e
DS		 182};
183
ddb5b488
PZ		 184typedef enum {
185 BGP_VPN_POLICY_DIR_FROMVPN = 0,
186 BGP_VPN_POLICY_DIR_TOVPN = 1,
187 BGP_VPN_POLICY_DIR_MAX = 2
188} vpn_policy_direction_t;
189
e70e9f8e
PZ		 190struct vpn_policy {
191 struct bgp *bgp; /* parent */
192 afi_t afi;
193 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
194 struct ecommunity *import_redirect_rtlist;
195 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
196 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
197
198 /* should be mpls_label_t? */
199 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
200 uint32_t tovpn_zebra_vrf_label_last_sent;
201 struct prefix_rd tovpn_rd;
202 struct prefix tovpn_nexthop; /* unset => set to 0 */
203 uint32_t flags;
204#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
205#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
206#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 207
1d4e8b0d
DS		 208 /*
209 * If we are importing another vrf into us keep a list of
210 * vrf names that are being imported into us.
211 */
12a844a5 212 struct list *import_vrf;
1d4e8b0d
DS		 213
214 /*
215 * if we are being exported to another vrf keep a list of
216 * vrf names that we are being exported to.
217 */
12a844a5 218 struct list *export_vrf;
e70e9f8e
PZ		 219};
220
ad4cbda1 221/*
222 * Type of 'struct bgp'.
223 * - Default: The default instance
224 * - VRF: A specific (non-default) VRF
225 * - View: An instance used for route exchange
226 * The "default" instance is treated separately to simplify the code. Note
227 * that if deployed in a Multi-VRF environment, it may not exist.
228 */
d62a17ae 229enum bgp_instance_type {
230 BGP_INSTANCE_TYPE_DEFAULT,
231 BGP_INSTANCE_TYPE_VRF,
232 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 233};
234
b0965c44 235
236/* BGP GR Global ds */
237
238#define GLOBAL_MODE 4
239#define EVENT_CMD 4
240
b0965c44 241/* Graceful restart selection deferral timer info */
242struct graceful_restart_info {
243 /* Count of EOR message expected */
244 uint32_t eor_required;
245 /* Count of EOR received */
246 uint32_t eor_received;
247 /* Deferral Timer */
248 struct thread *t_select_deferral;
249 /* Route list */
250 struct list *route_list;
251 /* Best route select */
252 struct thread *t_route_select;
253};
254
b0965c44 255enum global_mode {
256 GLOBAL_HELPER = 0, /* This is the default mode */
257 GLOBAL_GR,
258 GLOBAL_DISABLE,
259 GLOBAL_INVALID
260};
261
262enum global_gr_command {
263 GLOBAL_GR_CMD = 0,
264 NO_GLOBAL_GR_CMD,
265 GLOBAL_DISABLE_CMD,
266 NO_GLOBAL_DISABLE_CMD
267};
268
269#define BGP_GR_SUCCESS 0
270#define BGP_GR_FAILURE 1
271
718e3744 272/* BGP instance structure. */
d62a17ae 273struct bgp {
274 /* AS number of this BGP instance. */
275 as_t as;
276
277 /* Name of this BGP instance. */
278 char *name;
3572fb26 279 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 280
281 /* Type of instance and VRF id. */
282 enum bgp_instance_type inst_type;
283 vrf_id_t vrf_id;
284
285 /* Reference count to allow peer_delete to finish after bgp_delete */
286 int lock;
287
288 /* Self peer. */
289 struct peer *peer_self;
290
291 /* BGP peer. */
292 struct list *peer;
293 struct hash *peerhash;
294
295 /* BGP peer group. */
296 struct list *group;
297
298 /* The maximum number of BGP dynamic neighbors that can be created */
299 int dynamic_neighbors_limit;
300
301 /* The current number of BGP dynamic neighbors */
302 int dynamic_neighbors_count;
303
304 struct hash *update_groups[BGP_AF_MAX];
305
306 /*
307 * Global statistics for update groups.
308 */
309 struct {
d7c0a89a
QY		 310 uint32_t join_events;
311 uint32_t prune_events;
312 uint32_t merge_events;
313 uint32_t split_events;
314 uint32_t updgrp_switch_events;
315 uint32_t peer_refreshes_combined;
316 uint32_t adj_count;
317 uint32_t merge_checks_triggered;
318
319 uint32_t updgrps_created;
320 uint32_t updgrps_deleted;
321 uint32_t subgrps_created;
322 uint32_t subgrps_deleted;
d62a17ae 323 } update_group_stats;
324
325 /* BGP configuration. */
d7c0a89a 326 uint16_t config;
c2d58d6d 327#define BGP_CONFIG_CLUSTER_ID (1 << 0)
328#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 329
d62a17ae 330 /* BGP router identifier. */
331 struct in_addr router_id;
332 struct in_addr router_id_static;
333 struct in_addr router_id_zebra;
718e3744 334
d62a17ae 335 /* BGP route reflector cluster ID. */
336 struct in_addr cluster_id;
718e3744 337
d62a17ae 338 /* BGP confederation information. */
339 as_t confed_id;
340 as_t *confed_peers;
341 int confed_peers_cnt;
718e3744 342
d62a17ae 343 struct thread
344 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 345
d7c0a89a 346 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 347#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY		 348 uint32_t maxmed_onstartup_value; /* Max-med value when active on
349 start-up */
d62a17ae 350 struct thread
351 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 352 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 353
d7c0a89a 354 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 355#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY		 356 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
357 */
abc920f8
DS		 358#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
359
d7c0a89a
QY		 360 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
361 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 362
363 /* BGP update delay on startup */
364 struct thread *t_update_delay;
365 struct thread *t_establish_wait;
d7c0a89a
QY		 366 uint8_t update_delay_over;
367 uint8_t main_zebra_update_hold;
368 uint8_t main_peers_update_hold;
369 uint16_t v_update_delay;
370 uint16_t v_establish_wait;
d62a17ae 371 char update_delay_begin_time[64];
372 char update_delay_end_time[64];
373 char update_delay_zebra_resume_time[64];
374 char update_delay_peers_resume_time[64];
d7c0a89a
QY		 375 uint32_t established;
376 uint32_t restarted_peers;
377 uint32_t implicit_eors;
378 uint32_t explicit_eors;
f188f2c4
DS		 379#define BGP_UPDATE_DELAY_DEF 0
380#define BGP_UPDATE_DELAY_MIN 0
381#define BGP_UPDATE_DELAY_MAX 3600
382
d62a17ae 383 /* BGP flags. */
d7c0a89a 384 uint32_t flags;
718e3744 385#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
386#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
387#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
388#define BGP_FLAG_MED_CONFED (1 << 3)
389#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
390#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
718e3744 391#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
392#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
393#define BGP_FLAG_IMPORT_CHECK (1 << 9)
394#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 395#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
b0965c44 396
397/* This flag is set when we have full BGP Graceful-Restart mode enable */
538621f2 398#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
b0965c44 399
6811845b 400#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 401#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 402#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 403#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 404#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 405#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 406#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 407#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 408#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
9f822fa2 409#define BGP_FLAG_DELETE_IN_PROGRESS (1 << 22)
cfd47646 410#define BGP_FLAG_SELECT_DEFER_DISABLE (1 << 23)
d6e3c15b 411#define BGP_FLAG_GR_DISABLE_EOR (1 << 24)
b0965c44 412
413 enum global_mode GLOBAL_GR_FSM[GLOBAL_MODE][EVENT_CMD];
414 enum global_mode global_gr_present_state;
415
d62a17ae 416 /* BGP Per AF flags */
d7c0a89a 417 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 418#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 419/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK		 420#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
421#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
422#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
423#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
424/* import/export between address families */
425#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
426#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
427/* vrf-route leaking flags */
428#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
429#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
154faa50 430
210ec2a0
AS		 431 /* BGP per AF peer count */
432 uint32_t af_peer_count[AFI_MAX][SAFI_MAX];
433
d62a17ae 434 /* Route table for next-hop lookup cache. */
435 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 436
d62a17ae 437 /* Route table for import-check */
438 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 439
d62a17ae 440 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 441
d62a17ae 442 struct hash *address_hash;
6aeb9e78 443
db0e1937
MK		 444 /* DB for all local tunnel-ips - used mainly for martian checks
445 Currently it only has all VxLan tunnel IPs*/
446 struct hash *tip_hash;
447
d62a17ae 448 /* Static route configuration. */
449 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 450
d62a17ae 451 /* Aggregate address configuration. */
452 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 453
d62a17ae 454 /* BGP routing information base. */
455 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 456
d62a17ae 457 /* BGP table route-map. */
458 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 459
d62a17ae 460 /* BGP redistribute configuration. */
461 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 462
318cac96 463 /* Allocate MPLS labels */
d7c0a89a 464 uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
318cac96 465
f3d32faa
PG		 466 /* Allocate hash entries to store policy routing information
467 * The hash are used to host pbr rules somewhere.
468 * Actually, pbr will only be used by flowspec
469 * those hash elements will have relationship together as
470 * illustrated in below diagram:
471 *
472 * pbr_action a <----- pbr_match i <--- pbr_match_entry 1..n
473 * <----- pbr_match j <--- pbr_match_entry 1..m
27e376d4 474 * <----- pbr_rule k
f3d32faa
PG		 475 *
476 * - here in BGP structure, the list of match and actions will
477 * stand for the list of ipset sets, and table_ids in the kernel
478 * - the arrow above between pbr_match and pbr_action indicate
479 * that a backpointer permits match to find the action
480 * - the arrow betwen match_entry and match is a hash list
481 * contained in match, that lists the whole set of entries
482 */
483 struct hash *pbr_match_hash;
27e376d4 484 struct hash *pbr_rule_hash;
f3d32faa
PG		 485 struct hash *pbr_action_hash;
486
d62a17ae 487 /* timer to re-evaluate neighbor default-originate route-maps */
488 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 489#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
490
d62a17ae 491 /* BGP distance configuration. */
d7c0a89a
QY		 492 uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
493 uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
494 uint8_t distance_local[AFI_MAX][SAFI_MAX];
d62a17ae 495
496 /* BGP default local-preference. */
d7c0a89a 497 uint32_t default_local_pref;
d62a17ae 498
499 /* BGP default subgroup pkt queue max */
d7c0a89a 500 uint32_t default_subgroup_pkt_queue_max;
d62a17ae 501
502 /* BGP default timer. */
d7c0a89a
QY		 503 uint32_t default_holdtime;
504 uint32_t default_keepalive;
5d5393b9 505 uint32_t default_connect_retry;
d62a17ae 506
507 /* BGP graceful restart */
d7c0a89a
QY		 508 uint32_t restart_time;
509 uint32_t stalepath_time;
b0965c44 510 uint32_t select_defer_time;
511 struct graceful_restart_info gr_info[AFI_MAX][SAFI_MAX];
cfd47646 512#define BGP_ROUTE_SELECT_DELAY 1
513#define BGP_MAX_BEST_ROUTE_SELECT 10000
d62a17ae 514 /* Maximum-paths configuration */
515 struct bgp_maxpaths_cfg {
d7c0a89a
QY		 516 uint16_t maxpaths_ebgp;
517 uint16_t maxpaths_ibgp;
518 uint16_t ibgp_flags;
5e242b0d 519#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 520 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 521
555e09d4
QY		 522 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
523 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
524
37a333fe
QY		 525 /* Automatic coalesce adjust on/off */
526 bool heuristic_coalesce;
14b8641a
QY		 527 /* Actual coalesce time */
528 uint32_t coalesce_time;
adbac85e 529
f26845f9
QY		 530 /* Auto-shutdown new peers */
531 bool autoshutdown;
532
dcc68b5e 533 struct bgp_addpath_bgp_data tx_addpath;
65efcfce
LB		 534
535#if ENABLE_BGP_VNC
d62a17ae 536 struct rfapi_cfg *rfapi_cfg;
537 struct rfapi *rfapi;
65efcfce 538#endif
19df7279 539
d62a17ae 540 /* EVPN related information */
14c1a7bf 541
d62a17ae 542 /* EVI hash table */
543 struct hash *vnihash;
14c1a7bf 544
1a98c087
MK		 545 /* EVPN enable - advertise gateway macip routes */
546 int advertise_gw_macip;
547
d62a17ae 548 /* EVPN enable - advertise local VNIs and their MACs etc. */
549 int advertise_all_vni;
14c1a7bf 550
9dac9fc8
DA		 551 /* RFC 8212 - prevent route leaks. */
552 int ebgp_requires_policy;
553#define DEFAULT_EBGP_POLICY_DISABLED 0
554#define DEFAULT_EBGP_POLICY_ENABLED 1
555
fb29348a
DA		 556 /* draft-ietf-idr-deprecate-as-set-confed-set
557 * Reject aspaths with AS_SET and/or AS_CONFED_SET.
558 */
559 bool reject_as_sets;
560#define BGP_REJECT_AS_SETS_DISABLED 0
561#define BGP_REJECT_AS_SETS_ENABLED 1
562
85c8d83b
CS		 563 struct bgp_evpn_info *evpn_info;
564
bf1061d8
VB		 565 /* EVPN - use RFC 8365 to auto-derive RT */
566 int advertise_autort_rfc8365;
567
fd069644
DS		 568 /*
569 * Flooding mechanism for BUM packets for VxLAN-EVPN.
570 */
571 enum vxlan_flood_control vxlan_flood_ctrl;
572
d62a17ae 573 /* Hash table of Import RTs to EVIs */
574 struct hash *import_rt_hash;
14c1a7bf 575
10ebe1ab
MK		 576 /* Hash table of VRF import RTs to VRFs */
577 struct hash *vrf_import_rt_hash;
578
fe1dc5a3
MK		 579 /* L3-VNI corresponding to this vrf */
580 vni_t l3vni;
581
582 /* router-mac to be used in mac-ip routes for this vrf */
583 struct ethaddr rmac;
584
b67a60d2 585 /* originator ip - to be used as NH for type-5 routes */
586 struct in_addr originator_ip;
587
0483af6e 588 /* SVI associated with the L3-VNI corresponding to this vrf */
589 ifindex_t l3vni_svi_ifindex;
590
fe1dc5a3
MK		 591 /* vrf flags */
592 uint32_t vrf_flags;
676f83b9 593#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 594#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
595#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
596#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK		 597#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
598
676f83b9 599
600 /* unique ID for auto derivation of RD for this vrf */
601 uint16_t vrf_rd_id;
602
92708db6 603 /* Automatically derived RD for this VRF */
604 struct prefix_rd vrf_prd_auto;
605
676f83b9 606 /* RD for this VRF */
607 struct prefix_rd vrf_prd;
c581d8b0
MK		 608
609 /* import rt list for the vrf instance */
610 struct list *vrf_import_rtl;
611
612 /* export rt list for the vrf instance */
613 struct list *vrf_export_rtl;
fe1dc5a3 614
6a8657d0
MK		 615 /* list of corresponding l2vnis (struct bgpevpn) */
616 struct list *l2vnis;
617
53c84f78
MK		 618 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
619 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
620
e70e9f8e 621 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 622
4762c213
PG		 623 struct bgp_pbr_config *bgp_pbr_cfg;
624
50f74cf1 625 /* local esi hash table */
626 struct hash *esihash;
627
36dc7588 628 /* Count of peers in established state */
629 uint32_t established_peers;
630
d62a17ae 631 QOBJ_FIELDS
718e3744 632};
19df7279 633DECLARE_QOBJ_TYPE(bgp)
718e3744 634
2b9bcf30
DL		 635DECLARE_HOOK(bgp_inst_delete, (struct bgp *bgp), (bgp))
636DECLARE_HOOK(bgp_inst_config_write,
637 (struct bgp *bgp, struct vty *vty),
638 (bgp, vty))
639
cfd47646 640 /* Thread callback information */
641 struct afi_safi_info {
642 afi_t afi;
643 safi_t safi;
644 struct bgp *bgp;
645 };
646
2a3d5731 647#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 648
d62a17ae 649#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
650 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
651 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
652 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 653
f009ff26 654#define BGP_SELECT_DEFER_DISABLE(bgp) \
655 (bgp_flag_check(bgp, BGP_FLAG_SELECT_DEFER_DISABLE))
cfd47646 656
718e3744 657/* BGP peer-group support. */
d62a17ae 658struct peer_group {
659 /* Name of the peer-group. */
660 char *name;
718e3744 661
d62a17ae 662 /* Pointer to BGP. */
663 struct bgp *bgp;
718e3744 664
d62a17ae 665 /* Peer-group client list. */
666 struct list *peer;
f14e6fdb 667
d62a17ae 668 /** Dynamic neighbor listening ranges */
669 struct list *listen_range[AFI_MAX];
670
671 /* Peer-group config */
672 struct peer *conf;
718e3744 673};
674
675/* BGP Notify message format. */
d62a17ae 676struct bgp_notify {
d7c0a89a
QY		 677 uint8_t code;
678 uint8_t subcode;
d62a17ae 679 char *data;
680 bgp_size_t length;
d7c0a89a 681 uint8_t *raw_data;
718e3744 682};
683
684/* Next hop self address. */
d62a17ae 685struct bgp_nexthop {
686 struct interface *ifp;
687 struct in_addr v4;
688 struct in6_addr v6_global;
689 struct in6_addr v6_local;
718e3744 690};
691
a82478b9
DS		 692/* BGP addpath values */
693#define BGP_ADDPATH_RX 1
694#define BGP_ADDPATH_TX 2
695#define BGP_ADDPATH_ID_LEN 4
696
adbac85e
DW		 697#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
698
3f54c705 699/* Route map direction */
2a3d5731
DW		 700#define RMAP_IN 0
701#define RMAP_OUT 1
702#define RMAP_MAX 2
fee0f4c6 703
a0903cd2
DA		 704#define BGP_DEFAULT_TTL 1
705
65efcfce
LB		 706#include "filter.h"
707
718e3744 708/* BGP filter structure. */
d62a17ae 709struct bgp_filter {
710 /* Distribute-list. */
711 struct {
712 char *name;
713 struct access_list *alist;
714 } dlist[FILTER_MAX];
715
716 /* Prefix-list. */
717 struct {
718 char *name;
719 struct prefix_list *plist;
720 } plist[FILTER_MAX];
721
722 /* Filter-list. */
723 struct {
724 char *name;
725 struct as_list *aslist;
726 } aslist[FILTER_MAX];
727
728 /* Route-map. */
729 struct {
730 char *name;
731 struct route_map *map;
732 } map[RMAP_MAX];
733
734 /* Unsuppress-map. */
735 struct {
736 char *name;
737 struct route_map *map;
738 } usmap;
718e3744 739};
740
6d85b15b
JBD		 741/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
742 a peer who's AS is part of our Confederation. */
d62a17ae 743typedef enum {
faa16034
DS		 744 BGP_PEER_UNSPECIFIED,
745 BGP_PEER_IBGP,
d62a17ae 746 BGP_PEER_EBGP,
747 BGP_PEER_INTERNAL,
748 BGP_PEER_CONFED,
6d85b15b
JBD		 749} bgp_peer_sort_t;
750
d6661008
DS		 751/* BGP message header and packet size. */
752#define BGP_MARKER_SIZE 16
753#define BGP_HEADER_SIZE 19
754#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 755#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 756
3f9c7369
DS		 757/*
758 * Trigger delay for bgp_announce_route().
759 */
760#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
761#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
762
d62a17ae 763struct peer_af {
764 /* back pointer to the peer */
765 struct peer *peer;
3f9c7369 766
d62a17ae 767 /* which subgroup the peer_af belongs to */
768 struct update_subgroup *subgroup;
3f9c7369 769
d62a17ae 770 /* for being part of an update subgroup's peer list */
771 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 772
d62a17ae 773 /* for being part of a packet's peer list */
774 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 775
d62a17ae 776 struct bpacket *next_pkt_to_send;
3f9c7369 777
d62a17ae 778 /*
779 * Trigger timer for bgp_announce_route().
780 */
781 struct thread *t_announce_route;
3f9c7369 782
d62a17ae 783 afi_t afi;
784 safi_t safi;
785 int afid;
3f9c7369 786};
b0965c44 787/* BGP GR per peer ds */
788
b0965c44 789#define PEER_MODE 5
790#define PEER_EVENT_CMD 6
791
792enum peer_mode {
793 PEER_HELPER = 0,
794 PEER_GR,
795 PEER_DISABLE,
796 PEER_INVALID,
797 PEER_GLOBAL_INHERIT /* This is the default mode */
798
799};
800
801enum peer_gr_command {
802 PEER_GR_CMD = 0,
803 NO_PEER_GR_CMD,
804 PEER_DISABLE_cmd,
805 NO_PEER_DISABLE_CMD,
806 PEER_HELPER_CMD,
807 NO_PEER_HELPER_CMD
808};
809
810typedef unsigned int (*bgp_peer_gr_action_ptr)(struct peer *, int, int);
811
812struct bgp_peer_gr {
813 enum peer_mode next_state;
814 bgp_peer_gr_action_ptr action_fun;
815};
816
3f9c7369 817
718e3744 818/* BGP neighbor structure. */
d62a17ae 819struct peer {
820 /* BGP structure. */
821 struct bgp *bgp;
822
823 /* reference count, primarily to allow bgp_process'ing of route_node's
824 * to be done after a struct peer is deleted.
825 *
826 * named 'lock' for hysterical reasons within Quagga.
827 */
828 int lock;
829
830 /* BGP peer group. */
831 struct peer_group *group;
832 uint64_t version[AFI_MAX][SAFI_MAX];
833
834 /* BGP peer_af structures, per configured AF on this peer */
835 struct peer_af *peer_af_array[BGP_AF_MAX];
836
837 /* Peer's remote AS number. */
838 int as_type;
839 as_t as;
840
841 /* Peer's local AS number. */
842 as_t local_as;
843
844 bgp_peer_sort_t sort;
845
846 /* Peer's Change local AS number. */
847 as_t change_local_as;
848
849 /* Remote router ID. */
850 struct in_addr remote_id;
851
852 /* Local router ID. */
853 struct in_addr local_id;
854
855 /* Packet receive and send buffer. */
424ab01d
QY		 856 pthread_mutex_t io_mtx; // guards ibuf, obuf
857 struct stream_fifo *ibuf; // packets waiting to be processed
858 struct stream_fifo *obuf; // packets waiting to be written
859
74ffbfe6
QY		 860 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
861 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 862
863 struct stream *curr; // the current packet being parsed
d62a17ae 864
865 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 866 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 867 * actual packet is then constructed by concatenating the two.
868 */
869 struct stream *scratch;
870
871 /* the doppelganger peer structure, due to dual TCP conn setup */
872 struct peer *doppelganger;
873
874 /* Status of the peer. */
875 int status;
876 int ostatus;
877
878 /* FSM events, stored for debug purposes.
879 * Note: uchar used for reduced memory usage.
880 */
881 unsigned char cur_event;
882 unsigned char last_event;
883 unsigned char last_major_event;
884
885 /* Peer index, used for dumping TABLE_DUMP_V2 format */
886 uint16_t table_dump_index;
887
888 /* Peer information */
889 int fd; /* File descriptor */
890 int ttl; /* TTL of TCP connection to the peer. */
891 int rtt; /* Estimated round-trip-time from TCP_INFO */
892 int gtsm_hops; /* minimum hopcount to peer */
893 char *desc; /* Description of the peer. */
894 unsigned short port; /* Destination port for peer */
895 char *host; /* Printable address of the peer. */
896 union sockunion su; /* Sockunion address of the peer. */
a80beece 897#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 898 time_t uptime; /* Last Up/Down time */
899 time_t readtime; /* Last read time */
900 time_t resettime; /* Last reset time */
901
d62a17ae 902 char *conf_if; /* neighbor interface config name. */
903 struct interface *ifp; /* corresponding interface */
904 char *ifname; /* bind interface name. */
905 char *update_if;
906 union sockunion *update_source;
907
908 union sockunion *su_local; /* Sockunion of local address. */
909 union sockunion *su_remote; /* Sockunion of remote address. */
910 int shared_network; /* Is this peer shared same network. */
911 struct bgp_nexthop nexthop; /* Nexthop */
912
913 /* Peer address family configuration. */
d7c0a89a
QY		 914 uint8_t afc[AFI_MAX][SAFI_MAX];
915 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
916 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
917 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 918
919 /* Capability flags (reset in bgp_stop) */
d7c0a89a 920 uint32_t cap;
718e3744 921#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
922#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
923#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
924#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
925#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 926#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
927#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 928#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
929#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 930#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
931#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 932#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
933#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 934#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
935#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 936#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
937#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 938
d62a17ae 939 /* Capability flags (reset in bgp_stop) */
d7c0a89a 940 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 941#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
942#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
943#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
944#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
945#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
946#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 947#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
948#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 949#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
950#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
951#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
952#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 953#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
954#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
955#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 956
d62a17ae 957 /* Global configuration flags. */
9fb964de
PM		 958 /*
959 * Parallel array to flags that indicates whether each flag originates
960 * from a peer-group or if it is config that is specific to this
961 * individual peer. If a flag is set independent of the peer-group, the
962 * same bit should be set here. If this peer is a peer-group, this
963 * memory region should be all zeros.
964 *
965 * The assumption is that the default state for all flags is unset,
966 * so if a flag is unset, the corresponding override flag is unset too.
967 * However if a flag is set, the corresponding override flag is set.
968 */
969 uint32_t flags_override;
970 /*
971 * Parallel array to flags that indicates whether the default behavior
972 * of *flags_override* should be inverted. If a flag is unset and the
973 * corresponding invert flag is set, the corresponding override flag
974 * would be set. However if a flag is set and the corresponding invert
975 * flag is unset, the corresponding override flag would be unset.
976 *
977 * This can be used for attributes like *send-community*, which are
978 * implicitely enabled and have to be disabled explicitely, compared to
979 * 'normal' attributes like *next-hop-self* which are implicitely set.
980 *
981 * All operations dealing with flags should apply the following boolean
982 * logic to keep the internal flag system in a sane state:
983 *
984 * value=0 invert=0 Inherit flag if member, otherwise unset flag
985 * value=0 invert=1 Unset flag unconditionally
986 * value=1 invert=0 Set flag unconditionally
987 * value=1 invert=1 Inherit flag if member, otherwise set flag
988 *
989 * Contrary to the implementation of *flags_override*, the flag
990 * inversion state can be set either on the peer OR the peer *and* the
991 * peer-group. This was done on purpose, as the inversion state of a
992 * flag can be determined on either the peer or the peer-group.
993 *
994 * Example: Enabling the cisco configuration mode inverts all flags
995 * related to *send-community* unconditionally for both peer-groups and
996 * peers.
997 *
998 * This behavior is different for interface peers though, which enable
999 * the *extended-nexthop* flag by default, which regular peers do not.
1000 * As the peer-group can contain both regular and interface peers, the
1001 * flag inversion state must be set on the peer only.
1002 *
1003 * When a peer inherits the configuration from a peer-group and the
1004 * inversion state of the flag differs between peer and peer-group, the
1005 * newly set value must equal to the inverted state of the peer-group.
1006 */
1007 uint32_t flags_invert;
1008 /*
1009 * Effective array for storing the peer/peer-group flags. In case of a
1010 * peer-group, the peer-specific overrides (see flags_override and
1011 * flags_invert) must be respected.
1012 */
d7c0a89a 1013 uint32_t flags;
718e3744 1014#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
1015#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
1016#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
1017#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
1018#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 1019#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 1020#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 1021#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 1022#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
47cbc09b
PM		 1023#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
1024#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 1025#define PEER_FLAG_LONESOUL (1 << 11)
1026#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
1027#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 1028#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
47cbc09b
PM		 1029#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
1030#define PEER_FLAG_ENFORCE_FIRST_AS (1 << 16) /* enforce-first-as */
b90a8e13
PM		 1031#define PEER_FLAG_ROUTEADV (1 << 17) /* route advertise */
1032#define PEER_FLAG_TIMER (1 << 18) /* keepalive & holdtime */
1033#define PEER_FLAG_TIMER_CONNECT (1 << 19) /* connect timer */
a14810f4
PM		 1034#define PEER_FLAG_PASSWORD (1 << 20) /* password */
1035#define PEER_FLAG_LOCAL_AS (1 << 21) /* local-as */
1036#define PEER_FLAG_UPDATE_SOURCE (1 << 22) /* update-source */
02a82b47 1037
b0965c44 1038 /* BGP-GR Peer related flags */
1039#define PEER_FLAG_GRACEFUL_RESTART_HELPER (1 << 23) /* Helper */
1040#define PEER_FLAG_GRACEFUL_RESTART (1 << 24) /* Graceful Restart */
1041#define PEER_FLAG_GRACEFUL_RESTART_GLOBAL_INHERIT (1 << 25) /* Global-Inherit */
1042
1043 /*
1044 *GR-Disabled mode means unset PEER_FLAG_GRACEFUL_RESTART
1045 *& PEER_FLAG_GRACEFUL_RESTART_HELPER
1046 *and PEER_FLAG_GRACEFUL_RESTART_GLOBAL_INHERIT
1047 */
1048
1049 struct bgp_peer_gr PEER_GR_FSM[PEER_MODE][PEER_EVENT_CMD];
1050 enum peer_mode peer_gr_present_state;
1051 /* Non stop forwarding afi-safi count for BGP gr feature*/
1052 uint8_t nsf_af_count;
1053
1054 uint8_t peer_gr_new_status_flag;
1055#define PEER_GRACEFUL_RESTART_NEW_STATE_HELPER (1 << 0)
1056#define PEER_GRACEFUL_RESTART_NEW_STATE_RESTART (1 << 1)
794b37d5 1057#define PEER_GRACEFUL_RESTART_NEW_STATE_INHERIT (1 << 2)
b0965c44 1058
d62a17ae 1059 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
1060 char *tx_shutdown_message;
718e3744 1061
d62a17ae 1062 /* NSF mode (graceful restart) */
d7c0a89a 1063 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 1064
04e1c5bb
QY		 1065 /* Peer Per AF flags */
1066 /*
9fb964de
PM		 1067 * Please consult the comments for *flags_override*, *flags_invert* and
1068 * *flags* to understand what these three arrays do. The address-family
1069 * specific attributes are being treated the exact same way as global
1070 * peer attributes.
04e1c5bb
QY		 1071 */
1072 uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
27c05d4d 1073 uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
d7c0a89a 1074 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 1075#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
1076#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
1077#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
1078#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
1079#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
1080#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
1081#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
1082#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
1083#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
1084#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
1085#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
1086#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
794b37d5 1087#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
718e3744 1088#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
1089#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
1090#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 1091#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 1092#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 1093#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
1094#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 1095#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 1096#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
d93f7ffc 1097#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 1098#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 1099#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
fde246e8 1100#define PEER_FLAG_MAX_PREFIX_OUT (1 << 27) /* outgoing maximum prefix */
0df7c91f 1101
dcc68b5e
MS		 1102 enum bgp_addpath_strat addpath_type[AFI_MAX][SAFI_MAX];
1103
d62a17ae 1104 /* MD5 password */
1105 char *password;
718e3744 1106
d62a17ae 1107 /* default-originate route-map. */
1108 struct {
1109 char *name;
1110 struct route_map *map;
1111 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 1112
d62a17ae 1113 /* Peer status flags. */
d7c0a89a 1114 uint16_t sflags;
718e3744 1115#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
1116#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
1117#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
1118#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
1119#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 1120#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
1121#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 1122
d62a17ae 1123 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 1124 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 1125#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
1126#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 1127#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
1128#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
1129#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
1130#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 1131
b90a8e13 1132 /* Configured timer values. */
1588f6f4
QY		 1133 _Atomic uint32_t holdtime;
1134 _Atomic uint32_t keepalive;
1135 _Atomic uint32_t connect;
1136 _Atomic uint32_t routeadv;
d62a17ae 1137
1138 /* Timer values. */
1588f6f4
QY		 1139 _Atomic uint32_t v_start;
1140 _Atomic uint32_t v_connect;
1141 _Atomic uint32_t v_holdtime;
1142 _Atomic uint32_t v_keepalive;
1143 _Atomic uint32_t v_routeadv;
1144 _Atomic uint32_t v_pmax_restart;
1145 _Atomic uint32_t v_gr_restart;
d62a17ae 1146
1147 /* Threads. */
1148 struct thread *t_read;
424ab01d 1149 struct thread *t_write;
d62a17ae 1150 struct thread *t_start;
387f984e
QY		 1151 struct thread *t_connect_check_r;
1152 struct thread *t_connect_check_w;
d62a17ae 1153 struct thread *t_connect;
1154 struct thread *t_holdtime;
d62a17ae 1155 struct thread *t_routeadv;
1156 struct thread *t_pmax_restart;
1157 struct thread *t_gr_restart;
1158 struct thread *t_gr_stale;
56257a44 1159 struct thread *t_generate_updgrp_packets;
424ab01d 1160 struct thread *t_process_packet;
d62a17ae 1161
49507a6f 1162 /* Thread flags. */
0545c373 1163 _Atomic uint32_t thread_flags;
b750b0ba
QY		 1164#define PEER_THREAD_WRITES_ON (1 << 0)
1165#define PEER_THREAD_READS_ON (1 << 1)
1166#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 1167 /* workqueues */
1168 struct work_queue *clear_node_queue;
1169
a4d82a8a
PZ		 1170#define PEER_TOTAL_RX(peer) \
1171 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
1172 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
1173 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
1174 + atomic_load_explicit(&peer->refresh_in, \
1175 memory_order_relaxed) \
1176 + atomic_load_explicit(&peer->keepalive_in, \
1177 memory_order_relaxed) \
1178 + atomic_load_explicit(&peer->dynamic_cap_in, \
1179 memory_order_relaxed)
1180
1181#define PEER_TOTAL_TX(peer) \
1182 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
1183 + atomic_load_explicit(&peer->update_out, \
1184 memory_order_relaxed) \
1185 + atomic_load_explicit(&peer->notify_out, \
1186 memory_order_relaxed) \
1187 + atomic_load_explicit(&peer->refresh_out, \
1188 memory_order_relaxed) \
1189 + atomic_load_explicit(&peer->keepalive_out, \
1190 memory_order_relaxed) \
1191 + atomic_load_explicit(&peer->dynamic_cap_out, \
1192 memory_order_relaxed)
0112e9e0 1193
d62a17ae 1194 /* Statistics field */
996c9314
LB		 1195 _Atomic uint32_t open_in; /* Open message input count */
1196 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 1197 _Atomic uint32_t update_in; /* Update message input count */
1198 _Atomic uint32_t update_out; /* Update message ouput count */
1199 _Atomic time_t update_time; /* Update message received time. */
1200 _Atomic uint32_t keepalive_in; /* Keepalive input count */
1201 _Atomic uint32_t keepalive_out; /* Keepalive output count */
1202 _Atomic uint32_t notify_in; /* Notify input count */
1203 _Atomic uint32_t notify_out; /* Notify output count */
1204 _Atomic uint32_t refresh_in; /* Route Refresh input count */
1205 _Atomic uint32_t refresh_out; /* Route Refresh output count */
1206 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 1207 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 1208
b4d46cc9
DL		 1209 uint32_t stat_pfx_filter;
1210 uint32_t stat_pfx_aspath_loop;
1211 uint32_t stat_pfx_originator_loop;
1212 uint32_t stat_pfx_cluster_loop;
1213 uint32_t stat_pfx_nh_invalid;
1214 uint32_t stat_pfx_dup_withdraw;
1215 uint32_t stat_upd_7606; /* RFC7606: treat-as-withdraw */
1216
d62a17ae 1217 /* BGP state count */
d7c0a89a
QY		 1218 uint32_t established; /* Established */
1219 uint32_t dropped; /* Dropped */
d62a17ae 1220
1221 /* Update delay related fields */
d7c0a89a 1222 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 1223 for EOR */
1224
1225 /* Syncronization list and time. */
1226 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
1227 time_t synctime;
1588f6f4
QY		 1228 /* timestamp when the last UPDATE msg was written */
1229 _Atomic time_t last_write;
1230 /* timestamp when the last msg was written */
1231 _Atomic time_t last_update;
d62a17ae 1232
d62a17ae 1233 /* Notify data. */
1234 struct bgp_notify notify;
1235
d62a17ae 1236 /* Filter structure. */
1237 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
1238
70ee29b4
PM		 1239 /*
1240 * Parallel array to filter that indicates whether each filter
1241 * originates from a peer-group or if it is config that is specific to
1242 * this individual peer. If a filter is set independent of the
1243 * peer-group the appropriate bit should be set here. If this peer is a
1244 * peer-group, this memory region should be all zeros. The assumption
1245 * is that the default state for all flags is unset. Due to filters
1246 * having a direction (e.g. in/out/...), this array has a third
1247 * dimension for storing the overrides independently per direction.
1248 *
1249 * Notes:
1250 * - if a filter for an individual peer is unset, the corresponding
1251 * override flag is unset and the peer is considered to be back in
1252 * sync with the peer-group.
1253 * - This does *not* contain the filter values, rather it contains
1254 * whether the filter in filter (struct bgp_filter) is peer-specific.
1255 */
1256 uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
1257 ? FILTER_MAX
1258 : RMAP_MAX];
1259#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
1260#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
1261#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
1262#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
1263#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
1264
d62a17ae 1265 /* ORF Prefix-list */
1266 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
1267
1268 /* Text description of last attribute rcvd */
1269 char rcvd_attr_str[BUFSIZ];
1270
1271 /* Track if we printed the attribute in debugs */
1272 int rcvd_attr_printed;
1273
1274 /* Prefix count. */
a0a87037 1275 uint32_t pcount[AFI_MAX][SAFI_MAX];
d62a17ae 1276
1277 /* Max prefix count. */
a0a87037 1278 uint32_t pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY		 1279 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1280 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1281#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1282
fde246e8
DA		 1283 /* Send prefix count. */
1284 uint32_t pmax_out[AFI_MAX][SAFI_MAX];
1285
d62a17ae 1286 /* allowas-in. */
1287 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1288
d62a17ae 1289 /* weight */
1290 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1291
d62a17ae 1292 /* peer reset cause */
1a1f4534 1293 uint8_t last_reset;
e0701b79 1294#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1295#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1296#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1297#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1298#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1299#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1300#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1301#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1302#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1303#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1304#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1305#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1306#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1307#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1308#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1309#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1310#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1311#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1312#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1313#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1314#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1315#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1316#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1317#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 1318#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1319#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
3577f1c5
DD		 1320#define PEER_DOWN_WAITING_NHT 27 /* Waiting for NHT to resolve */
1321#define PEER_DOWN_NBR_ADDR 28 /* Waiting for peer IPv6 IP Addr */
1322#define PEER_DOWN_VRF_UNINIT 29 /* Associated VRF is not init yet */
05912a17 1323#define PEER_DOWN_NOAFI_ACTIVATED 30 /* No AFI/SAFI activated for peer */
fb29348a 1324#define PEER_DOWN_AS_SETS_REJECT 31 /* Reject routes with AS_SET */
1a1f4534 1325 size_t last_reset_cause_size;
d7c0a89a 1326 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1327
d62a17ae 1328 /* The kind of route-map Flags.*/
a3116965 1329 uint16_t rmap_type;
ac41b2a2 1330#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1331#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1332#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1333#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1334#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1335#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1336#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1337#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
20894f50 1338#define PEER_RMAP_TYPE_AGGREGATE (1 << 8) /* aggregate-address route-map */
6410e93a 1339
d62a17ae 1340 /* peer specific BFD information */
1341 struct bfd_info *bfd_info;
04b6bdc0 1342
d62a17ae 1343 /* hostname and domainname advertised by host */
1344 char *hostname;
1345 char *domainname;
19df7279 1346
2b31007c
RZ		 1347 /* Sender side AS path loop detection. */
1348 bool as_path_loop_detection;
1349
d62a17ae 1350 QOBJ_FIELDS
718e3744 1351};
19df7279 1352DECLARE_QOBJ_TYPE(peer)
718e3744 1353
598ce6bd 1354/* Inherit peer attribute from peer-group. */
e7103a96
PM		 1355#define PEER_ATTR_INHERIT(peer, group, attr) \
1356 ((peer)->attr = (group)->conf->attr)
1357#define PEER_STR_ATTR_INHERIT(peer, group, attr, mt) \
598ce6bd
PM		 1358 do { \
1359 if ((peer)->attr) \
1360 XFREE(mt, (peer)->attr); \
e7103a96
PM		 1361 if ((group)->conf->attr) \
1362 (peer)->attr = XSTRDUP(mt, (group)->conf->attr); \
598ce6bd
PM		 1363 else \
1364 (peer)->attr = NULL; \
1365 } while (0)
a14810f4
PM		 1366#define PEER_SU_ATTR_INHERIT(peer, group, attr) \
1367 do { \
1368 if ((peer)->attr) \
1369 sockunion_free((peer)->attr); \
1370 if ((group)->conf->attr) \
1371 (peer)->attr = sockunion_dup((group)->conf->attr); \
1372 else \
1373 (peer)->attr = NULL; \
1374 } while (0)
598ce6bd 1375
ad4cbda1 1376/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1377#define BGP_PEER_START_SUPPRESSED(P) \
1378 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1379 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1380
0df7c91f
PJ		 1381#define PEER_PASSWORD_MINLEN (1)
1382#define PEER_PASSWORD_MAXLEN (80)
1383
718e3744 1384/* This structure's member directly points incoming packet data
1385 stream. */
d62a17ae 1386struct bgp_nlri {
1387 /* AFI. */
a46a2e9b 1388 uint16_t afi; /* iana_afi_t */
718e3744 1389
d62a17ae 1390 /* SAFI. */
a46a2e9b 1391 uint8_t safi; /* iana_safi_t */
718e3744 1392
d62a17ae 1393 /* Pointer to NLRI byte stream. */
d7c0a89a 1394 uint8_t *nlri;
718e3744 1395
d62a17ae 1396 /* Length of whole NLRI. */
1397 bgp_size_t length;
718e3744 1398};
1399
1400/* BGP versions. */
1401#define BGP_VERSION_4 4
718e3744 1402
1403/* Default BGP port number. */
1404#define BGP_PORT_DEFAULT 179
1405
718e3744 1406/* BGP minimum message size. */
1407#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1408#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1409#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1410#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1411#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1412#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1413
1414/* BGP message types. */
1415#define BGP_MSG_OPEN 1
1416#define BGP_MSG_UPDATE 2
1417#define BGP_MSG_NOTIFY 3
1418#define BGP_MSG_KEEPALIVE 4
1419#define BGP_MSG_ROUTE_REFRESH_NEW 5
1420#define BGP_MSG_CAPABILITY 6
1421#define BGP_MSG_ROUTE_REFRESH_OLD 128
1422
1423/* BGP open optional parameter. */
1424#define BGP_OPEN_OPT_AUTH 1
1425#define BGP_OPEN_OPT_CAP 2
1426
1427/* BGP4 attribute type codes. */
1428#define BGP_ATTR_ORIGIN 1
1429#define BGP_ATTR_AS_PATH 2
1430#define BGP_ATTR_NEXT_HOP 3
1431#define BGP_ATTR_MULTI_EXIT_DISC 4
1432#define BGP_ATTR_LOCAL_PREF 5
1433#define BGP_ATTR_ATOMIC_AGGREGATE 6
1434#define BGP_ATTR_AGGREGATOR 7
1435#define BGP_ATTR_COMMUNITIES 8
1436#define BGP_ATTR_ORIGINATOR_ID 9
1437#define BGP_ATTR_CLUSTER_LIST 10
1438#define BGP_ATTR_DPA 11
1439#define BGP_ATTR_ADVERTISER 12
1440#define BGP_ATTR_RCID_PATH 13
1441#define BGP_ATTR_MP_REACH_NLRI 14
1442#define BGP_ATTR_MP_UNREACH_NLRI 15
1443#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1444#define BGP_ATTR_AS4_PATH 17
1445#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1446#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1447#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1448#define BGP_ATTR_ENCAP 23
57d187bc 1449#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1450#define BGP_ATTR_PREFIX_SID 40
943d595a 1451#if ENABLE_BGP_VNC_ATTR
65efcfce
LB		 1452#define BGP_ATTR_VNC 255
1453#endif
718e3744 1454
1455/* BGP update origin. */
1456#define BGP_ORIGIN_IGP 0
1457#define BGP_ORIGIN_EGP 1
1458#define BGP_ORIGIN_INCOMPLETE 2
1459
1460/* BGP notify message codes. */
1461#define BGP_NOTIFY_HEADER_ERR 1
1462#define BGP_NOTIFY_OPEN_ERR 2
1463#define BGP_NOTIFY_UPDATE_ERR 3
1464#define BGP_NOTIFY_HOLD_ERR 4
1465#define BGP_NOTIFY_FSM_ERR 5
1466#define BGP_NOTIFY_CEASE 6
1467#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1468
4b4e07d2
DT		 1469#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1470
718e3744 1471/* BGP_NOTIFY_HEADER_ERR sub codes. */
1472#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1473#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1474#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1475
1476/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1477#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1478#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1479#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1480#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1481#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1482#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1483#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1484#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1485
1486/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1487#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1488#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1489#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1490#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1491#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1492#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1493#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1494#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1495#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1496#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1497#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1498
4b4e07d2 1499/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1500#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1501#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1502#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1503#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1504#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1505#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1506#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1507#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1508
1509/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1510#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1511#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1512#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1513
1514/* BGP finite state machine status. */
1515#define Idle 1
1516#define Connect 2
1517#define Active 3
1518#define OpenSent 4
1519#define OpenConfirm 5
1520#define Established 6
ca058a30
PJ		 1521#define Clearing 7
1522#define Deleted 8
1523#define BGP_STATUS_MAX 9
718e3744 1524
1525/* BGP finite state machine events. */
1526#define BGP_Start 1
1527#define BGP_Stop 2
1528#define TCP_connection_open 3
1529#define TCP_connection_closed 4
1530#define TCP_connection_open_failed 5
1531#define TCP_fatal_error 6
1532#define ConnectRetry_timer_expired 7
1533#define Hold_Timer_expired 8
1534#define KeepAlive_timer_expired 9
1535#define Receive_OPEN_message 10
1536#define Receive_KEEPALIVE_message 11
1537#define Receive_UPDATE_message 12
1538#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1539#define Clearing_Completed 14
1540#define BGP_EVENTS_MAX 15
718e3744 1541
1542/* BGP timers default value. */
5ca5f1c8 1543#define BGP_INIT_START_TIMER 1
5d5393b9
DL		 1544/* The following 3 are RFC defaults that are overridden in bgp_vty.c with
1545 * version-/profile-specific values. The values here do not matter, they only
1546 * exist to provide a clear layering separation between core and CLI.
1547 */
1548#define BGP_DEFAULT_HOLDTIME 180
1549#define BGP_DEFAULT_KEEPALIVE 60
1550#define BGP_DEFAULT_CONNECT_RETRY 120
1551
12179ba3 1552#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1553#define BGP_DEFAULT_IBGP_ROUTEADV 0
718e3744 1554
1555/* BGP default local preference. */
1556#define BGP_DEFAULT_LOCAL_PREF 100
1557
7f323236
DW		 1558/* BGP local-preference to send when 'bgp graceful-shutdown'
1559 * is configured */
1560#define BGP_GSHUT_LOCAL_PREF 0
1561
3f9c7369
DS		 1562/* BGP default subgroup packet queue max . */
1563#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1564
538621f2 1565/* BGP graceful restart */
1566#define BGP_DEFAULT_RESTART_TIME 120
1567#define BGP_DEFAULT_STALEPATH_TIME 360
cfd47646 1568#define BGP_DEFAULT_SELECT_DEFERRAL_TIME 360
538621f2 1569
718e3744 1570/* BGP uptime string length. */
1571#define BGP_UPTIME_LEN 25
1572
1573/* Default configuration settings for bgpd. */
1574#define BGP_VTY_PORT 2605
718e3744 1575#define BGP_DEFAULT_CONFIG "bgpd.conf"
1576
f14e6fdb
DS		 1577/* BGP Dynamic Neighbors feature */
1578#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1579#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1580#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1581
718e3744 1582/* Flag for peer_clear_soft(). */
d62a17ae 1583enum bgp_clear_type {
1584 BGP_CLEAR_SOFT_NONE,
1585 BGP_CLEAR_SOFT_OUT,
1586 BGP_CLEAR_SOFT_IN,
1587 BGP_CLEAR_SOFT_BOTH,
1588 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1589};
1590
1591/* Macros. */
424ab01d 1592#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1593#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1594#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1595 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1596
718e3744 1597/* BGP error codes. */
1598#define BGP_SUCCESS 0
5d5393b9 1599#define BGP_CREATED 1
718e3744 1600#define BGP_ERR_INVALID_VALUE -1
1601#define BGP_ERR_INVALID_FLAG -2
1602#define BGP_ERR_INVALID_AS -3
1603#define BGP_ERR_INVALID_BGP -4
1604#define BGP_ERR_PEER_GROUP_MEMBER -5
c8560b44
DW		 1605#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1606#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1607#define BGP_ERR_PEER_GROUP_MISMATCH -9
1608#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
c8560b44
DW		 1609#define BGP_ERR_AS_MISMATCH -12
1610#define BGP_ERR_PEER_FLAG_CONFLICT -13
1611#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1612#define BGP_ERR_PEER_FILTER_CONFLICT -15
1613#define BGP_ERR_NOT_INTERNAL_PEER -16
1614#define BGP_ERR_REMOVE_PRIVATE_AS -17
1615#define BGP_ERR_AF_UNCONFIGURED -18
1616#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1617#define BGP_ERR_INSTANCE_MISMATCH -20
1618#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1619#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1620#define BGP_ERR_TCPSIG_FAILED -23
1621#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1622#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1623#define BGP_ERR_NO_INTERFACE_CONFIG -26
1624#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1625#define BGP_ERR_AS_OVERRIDE -28
1626#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1627#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1628#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1629#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1630#define BGP_ERR_MAX -33
63fa10b5 1631#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1632#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1633
b0965c44 1634/* BGP GR ERRORS */
b0965c44 1635#define BGP_ERR_GR_INVALID_CMD -36
1636#define BGP_ERR_GR_OPERATION_FAILED -37
1637#define BGP_GR_NO_OPERATION -38
1638
3f9c7369
DS		 1639/*
1640 * Enumeration of different policy kinds a peer can be configured with.
1641 */
d62a17ae 1642typedef enum {
1643 BGP_POLICY_ROUTE_MAP,
1644 BGP_POLICY_FILTER_LIST,
1645 BGP_POLICY_PREFIX_LIST,
1646 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1647} bgp_policy_type_e;
1648
dcc68b5e
MS		 1649/* peer_flag_change_type. */
1650enum peer_change_type {
1651 peer_change_none,
1652 peer_change_reset,
1653 peer_change_reset_in,
1654 peer_change_reset_out,
1655};
1656
718e3744 1657extern struct bgp_master *bm;
37fe7731 1658extern unsigned int multipath_num;
718e3744 1659
718e3744 1660/* Prototypes. */
d62a17ae 1661extern void bgp_terminate(void);
1662extern void bgp_reset(void);
1663extern time_t bgp_clock(void);
1664extern void bgp_zclient_reset(void);
d62a17ae 1665extern struct bgp *bgp_get_default(void);
1666extern struct bgp *bgp_lookup(as_t, const char *);
1667extern struct bgp *bgp_lookup_by_name(const char *);
1668extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
e2f3a930
T		 1669extern struct bgp *bgp_get_evpn(void);
1670extern void bgp_set_evpn(struct bgp *bgp);
d62a17ae 1671extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1672extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1673extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1674extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1675extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1676extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1677extern struct peer_group *peer_group_get(struct bgp *, const char *);
1678extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1679 union sockunion *,
1680 struct peer_group *);
1681extern struct prefix *
1682peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1683extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1684 struct prefix *,
1685 struct prefix **);
1686extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1687 union sockunion *);
28066f4b
DS		 1688
1689/*
1690 * Peers are incredibly easy to memory leak
1691 * due to the various ways that they are actually used
1692 * Provide some functionality to debug locks and unlocks
1693 */
1694extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1695extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1696#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1697#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1698
d62a17ae 1699extern bgp_peer_sort_t peer_sort(struct peer *peer);
1700extern int peer_active(struct peer *);
1701extern int peer_active_nego(struct peer *);
1702extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1703extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1704 as_t, as_t, int, afi_t, safi_t,
1705 struct peer_group *);
1706extern struct peer *peer_create_accept(struct bgp *);
1707extern void peer_xfer_config(struct peer *dst, struct peer *src);
94d4c685
DS		 1708extern char *peer_uptime(time_t uptime2, char *buf, size_t len, bool use_json,
1709 json_object *json);
856ca177 1710
d62a17ae 1711extern int bgp_config_write(struct vty *);
6b0655a2 1712
c2d020ad
DS		 1713extern void bgp_master_init(struct thread_master *master,
1714 const int buffer_size);
718e3744 1715
f533be73 1716extern void bgp_init(unsigned short instance);
419dfe6a 1717extern void bgp_pthreads_run(void);
2d4ee774 1718extern void bgp_pthreads_finish(void);
d62a17ae 1719extern void bgp_route_map_init(void);
1720extern void bgp_session_reset(struct peer *);
718e3744 1721
d62a17ae 1722extern int bgp_option_set(int);
1723extern int bgp_option_unset(int);
1724extern int bgp_option_check(int);
718e3744 1725
d62a17ae 1726extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1727extern void bgp_instance_up(struct bgp *);
1728extern void bgp_instance_down(struct bgp *);
1729extern int bgp_delete(struct bgp *);
718e3744 1730
e5619c28
PG		 1731extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1732 vrf_id_t old_vrf_id, bool create);
1733
d62a17ae 1734extern int bgp_flag_set(struct bgp *, int);
1735extern int bgp_flag_unset(struct bgp *, int);
1736extern int bgp_flag_check(struct bgp *, int);
718e3744 1737
d62a17ae 1738extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1739extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1740
d62a17ae 1741extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1742extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1743
d62a17ae 1744extern int bgp_confederation_id_set(struct bgp *, as_t);
1745extern int bgp_confederation_id_unset(struct bgp *);
1746extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1747
d62a17ae 1748extern int bgp_confederation_peers_add(struct bgp *, as_t);
1749extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1750
5d5393b9
DL		 1751extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime,
1752 uint32_t connect_retry);
d62a17ae 1753extern int bgp_timers_unset(struct bgp *);
718e3744 1754
d7c0a89a 1755extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1756extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1757
d7c0a89a 1758extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1759extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1760
d62a17ae 1761extern int bgp_listen_limit_set(struct bgp *, int);
1762extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1763
d62a17ae 1764extern int bgp_update_delay_active(struct bgp *);
1765extern int bgp_update_delay_configured(struct bgp *);
318cac96 1766extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1767extern void peer_as_change(struct peer *, as_t, int);
1768extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1769 int, afi_t, safi_t);
1770extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1771extern int peer_delete(struct peer *peer);
4e2786df 1772extern int peer_notify_unconfig(struct peer *peer);
d62a17ae 1773extern int peer_group_delete(struct peer_group *);
1774extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1775extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
4e2786df 1776extern int peer_group_notify_unconfig(struct peer_group *group);
718e3744 1777
d62a17ae 1778extern int peer_activate(struct peer *, afi_t, safi_t);
1779extern int peer_deactivate(struct peer *, afi_t, safi_t);
1780extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1781
d62a17ae 1782extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1783 struct peer_group *, as_t *);
718e3744 1784
d7c0a89a
QY		 1785extern int peer_flag_set(struct peer *, uint32_t);
1786extern int peer_flag_unset(struct peer *, uint32_t);
9fb964de 1787extern void peer_flag_inherit(struct peer *peer, uint32_t flag);
718e3744 1788
d7c0a89a
QY		 1789extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1790extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1791extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
cf9ac8bf
PM		 1792extern void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi,
1793 uint32_t flag);
dcc68b5e
MS		 1794extern void peer_change_action(struct peer *peer, afi_t afi, safi_t safi,
1795 enum peer_change_type type);
718e3744 1796
d62a17ae 1797extern int peer_ebgp_multihop_set(struct peer *, int);
1798extern int peer_ebgp_multihop_unset(struct peer *);
1799extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1800
d62a17ae 1801extern int peer_description_set(struct peer *, const char *);
1802extern int peer_description_unset(struct peer *);
718e3744 1803
d62a17ae 1804extern int peer_update_source_if_set(struct peer *, const char *);
1805extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1806extern int peer_update_source_unset(struct peer *);
718e3744 1807
1de27621
DA		 1808extern int peer_default_originate_set(struct peer *peer, afi_t afi, safi_t safi,
1809 const char *rmap,
1810 struct route_map *route_map);
d62a17ae 1811extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1812
d7c0a89a 1813extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1814extern int peer_port_unset(struct peer *);
718e3744 1815
d7c0a89a 1816extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1817extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1818
d7c0a89a
QY		 1819extern int peer_timers_set(struct peer *, uint32_t keepalive,
1820 uint32_t holdtime);
d62a17ae 1821extern int peer_timers_unset(struct peer *);
718e3744 1822
d7c0a89a 1823extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1824extern int peer_timers_connect_unset(struct peer *);
718e3744 1825
d7c0a89a 1826extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1827extern int peer_advertise_interval_unset(struct peer *);
718e3744 1828
d62a17ae 1829extern void peer_interface_set(struct peer *, const char *);
1830extern void peer_interface_unset(struct peer *);
718e3744 1831
d62a17ae 1832extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1833extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1834
d62a17ae 1835extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1836extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1837
d62a17ae 1838extern int peer_local_as_set(struct peer *, as_t, int, int);
1839extern int peer_local_as_unset(struct peer *);
718e3744 1840
d62a17ae 1841extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1842 const char *);
1843extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1844
d62a17ae 1845extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1846extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1847
1de27621
DA		 1848extern int peer_route_map_set(struct peer *peer, afi_t afi, safi_t safi, int,
1849 const char *name, struct route_map *route_map);
d62a17ae 1850extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1851
1de27621
DA		 1852extern int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi,
1853 const char *name,
1854 struct route_map *route_map);
0df7c91f 1855
d62a17ae 1856extern int peer_password_set(struct peer *, const char *);
1857extern int peer_password_unset(struct peer *);
0df7c91f 1858
d62a17ae 1859extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1860
d7c0a89a
QY		 1861extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1862 uint8_t, int, uint16_t);
d62a17ae 1863extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1864
d62a17ae 1865extern int peer_clear(struct peer *, struct listnode **);
1866extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1867
d62a17ae 1868extern int peer_ttl_security_hops_set(struct peer *, int);
1869extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1870
d62a17ae 1871extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1872extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1873
d62a17ae 1874extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1875extern void bgp_route_map_terminate(void);
16286195 1876
d62a17ae 1877extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1878
5c525538 1879extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1880 afi_t *afi, safi_t *safi);
1881extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1882 iana_afi_t *pkt_afi,
1883 iana_safi_t *pkt_safi);
9cabb64b 1884
d62a17ae 1885extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1886extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1887extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1888
ffd0c037 1889extern void bgp_close(void);
92375c91 1890extern void bgp_free(struct bgp *);
b0965c44 1891void bgp_gr_apply_running_config(void);
1892
1893/* BGP GR */
b0965c44 1894int bgp_global_gr_init(struct bgp *bgp);
1895int bgp_peer_gr_init(struct peer *peer);
92375c91
JB		 1896
1897static inline struct bgp *bgp_lock(struct bgp *bgp)
1898{
1899 bgp->lock++;
1900 return bgp;
1901}
1902
1903static inline void bgp_unlock(struct bgp *bgp)
1904{
1905 assert(bgp->lock > 0);
1906 if (--bgp->lock == 0)
1907 bgp_free(bgp);
1908}
ffd0c037 1909
d62a17ae 1910static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1911{
d62a17ae 1912 switch (afi) {
1913 case AFI_IP:
1914 switch (safi) {
1915 case SAFI_UNICAST:
1916 return BGP_AF_IPV4_UNICAST;
1917 break;
1918 case SAFI_MULTICAST:
1919 return BGP_AF_IPV4_MULTICAST;
1920 break;
1921 case SAFI_LABELED_UNICAST:
1922 return BGP_AF_IPV4_LBL_UNICAST;
1923 break;
1924 case SAFI_MPLS_VPN:
1925 return BGP_AF_IPV4_VPN;
1926 break;
1927 case SAFI_ENCAP:
1928 return BGP_AF_IPV4_ENCAP;
1929 break;
7c40bf39 1930 case SAFI_FLOWSPEC:
1931 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1932 default:
1933 return BGP_AF_MAX;
1934 break;
1935 }
1936 break;
1937 case AFI_IP6:
1938 switch (safi) {
1939 case SAFI_UNICAST:
1940 return BGP_AF_IPV6_UNICAST;
1941 break;
1942 case SAFI_MULTICAST:
1943 return BGP_AF_IPV6_MULTICAST;
1944 break;
1945 case SAFI_LABELED_UNICAST:
1946 return BGP_AF_IPV6_LBL_UNICAST;
1947 break;
1948 case SAFI_MPLS_VPN:
1949 return BGP_AF_IPV6_VPN;
1950 break;
1951 case SAFI_ENCAP:
1952 return BGP_AF_IPV6_ENCAP;
1953 break;
7c40bf39 1954 case SAFI_FLOWSPEC:
1955 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1956 default:
1957 return BGP_AF_MAX;
1958 break;
1959 }
1960 break;
1961 case AFI_L2VPN:
1962 switch (safi) {
1963 case SAFI_EVPN:
1964 return BGP_AF_L2VPN_EVPN;
1965 break;
1966 default:
1967 return BGP_AF_MAX;
1968 break;
1969 }
3f9c7369 1970 default:
d62a17ae 1971 return BGP_AF_MAX;
1972 break;
3f9c7369 1973 }
3f9c7369
DS		 1974}
1975
c8560b44 1976/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1977static inline int peer_group_active(struct peer *peer)
3f9c7369 1978{
d62a17ae 1979 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1980 return 1;
1981 return 0;
3f9c7369
DS		 1982}
1983
1984/* If peer is negotiated at least one address family return 1. */
d62a17ae 1985static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1986{
d62a17ae 1987 if (peer->afc_nego[afi][SAFI_UNICAST]
1988 || peer->afc_nego[afi][SAFI_MULTICAST]
1989 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1990 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1991 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1992 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1993 || peer->afc_nego[afi][SAFI_EVPN])
1994 return 1;
1995 return 0;
3f9c7369
DS		 1996}
1997
f14e6fdb 1998/* If at least one address family activated for group, return 1. */
d62a17ae 1999static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 2000{
d62a17ae 2001 struct peer *peer = group->conf;
2002
2003 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
2004 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 2005 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 2006 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
2007 || peer->afc[AFI_IP6][SAFI_UNICAST]
2008 || peer->afc[AFI_IP6][SAFI_MULTICAST]
2009 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
2010 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 2011 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 2012 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 2013 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 2014 return 1;
2015 return 0;
f14e6fdb
DS		 2016}
2017
d62a17ae 2018static inline char *timestamp_string(time_t ts)
3f9c7369 2019{
d62a17ae 2020 time_t tbuf;
2021 tbuf = time(NULL) - (bgp_clock() - ts);
2022 return ctime(&tbuf);
3f9c7369
DS		 2023}
2024
d62a17ae 2025static inline int peer_established(struct peer *peer)
3f9c7369 2026{
d62a17ae 2027 if (peer->status == Established)
2028 return 1;
2029 return 0;
3f9c7369
DS		 2030}
2031
d62a17ae 2032static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 2033{
d62a17ae 2034 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 2035}
2036
d62a17ae 2037static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 2038{
d62a17ae 2039 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 2040}
2041
d1be1f08 2042/* Lookup VRF for BGP instance based on its type. */
d62a17ae 2043static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 2044{
d62a17ae 2045 struct vrf *vrf;
d1be1f08 2046
d62a17ae 2047 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
2048 vrf = vrf_lookup_by_id(VRF_DEFAULT);
2049 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
2050 vrf = vrf_lookup_by_name(bgp->name);
2051 else
2052 vrf = NULL;
d1be1f08 2053
d62a17ae 2054 return vrf;
d1be1f08 2055}
2056
2057/* Link BGP instance to VRF. */
d62a17ae 2058static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 2059{
d62a17ae 2060 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 2061 if (vrf->info != (void *)bgp)
2062 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 2063}
2064
2065/* Unlink BGP instance from VRF. */
d62a17ae 2066static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 2067{
d62a17ae 2068 if (vrf->info == (void *)bgp) {
2069 vrf->info = NULL;
2070 bgp_unlock(bgp);
2071 }
2072 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 2073}
2074
401d56cc 2075extern void bgp_unset_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 2076
2077/* For benefit of rfapi */
d62a17ae 2078extern struct peer *peer_new(struct bgp *bgp);
dcc1615e
DD		 2079
2080extern struct peer *peer_lookup_in_view(struct vty *vty, struct bgp *bgp,
2081 const char *ip_str, bool use_json);
2082
7d8d0eab
MKS		 2083/* Hooks */
2084DECLARE_HOOK(peer_status_changed, (struct peer * peer), (peer))
d7b3cda6 2085void peer_nsf_stop(struct peer *peer);
7d8d0eab 2086
00d252cb 2087#endif /* _QUAGGA_BGPD_H */
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