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Merge pull request #3855 from donaldsharp/bgp_clist_sa
[mirror_frr.git] / bgpd / bgpd.h
CommitLineData
718e3744 1/* BGP message definition header.
896014f4
DL		 2 * Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
718e3744 20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
19df7279 24#include "qobj.h"
d3ecc69e
QY		 25#include <pthread.h>
26
1ac267a2 27#include "frr_pthread.h"
856ca177 28#include "lib/json.h"
6aeb9e78 29#include "vrf.h"
94c60424 30#include "vty.h"
6aeb9e78 31
718e3744 32/* For union sockunion. */
3f9c7369 33#include "queue.h"
718e3744 34#include "sockunion.h"
518f0eb1 35#include "routemap.h"
ffd0c037 36#include "linklist.h"
8efe88ea 37#include "defaults.h"
4a1ab8e4 38#include "bgp_memory.h"
14c1a7bf 39#include "bitfield.h"
fe1dc5a3 40#include "vxlan.h"
955bfd98 41#include "bgp_labelpool.h"
dcc68b5e 42#include "bgp_addpath_types.h"
718e3744 43
04b6bdc0 44#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 45#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 46
5c81b96a 47/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
48#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
49
3f9c7369
DS		 50struct update_subgroup;
51struct bpacket;
4762c213 52struct bgp_pbr_config;
3f9c7369 53
0299c004
DS		 54/*
55 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 56 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
57 * behavior
0299c004
DS		 58 * in the system.
59 */
d62a17ae 60enum { AS_UNSPECIFIED = 0,
61 AS_SPECIFIED,
62 AS_INTERNAL,
63 AS_EXTERNAL,
0299c004
DS		 64};
65
718e3744 66/* Typedef BGP specific types. */
d7c0a89a
QY		 67typedef uint32_t as_t;
68typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
69typedef uint16_t bgp_size_t;
718e3744 70
d62a17ae 71#define max(a, b) \
72 ({ \
73 __typeof__(a) _a = (a); \
74 __typeof__(b) _b = (b); \
75 _a > _b ? _a : _b; \
76 })
77
78enum bgp_af_index {
79 BGP_AF_START,
80 BGP_AF_IPV4_UNICAST = BGP_AF_START,
81 BGP_AF_IPV4_MULTICAST,
82 BGP_AF_IPV4_VPN,
83 BGP_AF_IPV6_UNICAST,
84 BGP_AF_IPV6_MULTICAST,
85 BGP_AF_IPV6_VPN,
86 BGP_AF_IPV4_ENCAP,
87 BGP_AF_IPV6_ENCAP,
88 BGP_AF_L2VPN_EVPN,
89 BGP_AF_IPV4_LBL_UNICAST,
90 BGP_AF_IPV6_LBL_UNICAST,
7c40bf39 91 BGP_AF_IPV4_FLOWSPEC,
92 BGP_AF_IPV6_FLOWSPEC,
d62a17ae 93 BGP_AF_MAX
3f9c7369
DS		 94};
95
d62a17ae 96#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 97
d62a17ae 98#define FOREACH_AFI_SAFI(afi, safi) \
99 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
100 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 101
1ac267a2
DL		 102extern struct frr_pthread *bgp_pth_io;
103extern struct frr_pthread *bgp_pth_ka;
104
718e3744 105/* BGP master for system wide configurations and variables. */
d62a17ae 106struct bgp_master {
107 /* BGP instance list. */
108 struct list *bgp;
109
110 /* BGP thread master. */
111 struct thread_master *master;
718e3744 112
d62a17ae 113 /* work queues */
114 struct work_queue *process_main_queue;
87d4a781 115
d62a17ae 116 /* Listening sockets */
117 struct list *listen_sockets;
718e3744 118
d62a17ae 119 /* BGP port number. */
d7c0a89a 120 uint16_t port;
3a02d1f7 121
d62a17ae 122 /* Listener address */
123 char *address;
718e3744 124
48ecf8f5
DS		 125 /* The Mac table */
126 struct hash *self_mac_hash;
127
d62a17ae 128 /* BGP start time. */
129 time_t start_time;
130
131 /* Various BGP global configuration. */
d7c0a89a 132 uint8_t options;
718e3744 133#define BGP_OPT_NO_FIB (1 << 0)
134#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
135#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 136#define BGP_OPT_NO_LISTEN (1 << 3)
0b014ea6 137#define BGP_OPT_NO_ZEBRA (1 << 4)
3f9c7369 138
d62a17ae 139 uint64_t updgrp_idspace;
140 uint64_t subgrp_idspace;
5fe9f963 141
d62a17ae 142 /* timer to dampen route map changes */
143 struct thread *t_rmap_update; /* Handle route map updates */
d7c0a89a 144 uint32_t rmap_update_timer; /* Route map update timer */
5fe9f963 145#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 146
e9eb5f63 147 /* Id space for automatic RD derivation for an EVI/VRF */
148 bitfield_t rd_idspace;
149
955bfd98
PZ		 150 /* dynamic mpls label allocation pool */
151 struct labelpool labelpool;
152
97b4a0ec 153 bool terminating; /* global flag that sigint terminate seen */
d62a17ae 154 QOBJ_FIELDS
718e3744 155};
19df7279 156DECLARE_QOBJ_TYPE(bgp_master)
718e3744 157
73ac8160 158/* BGP route-map structure. */
d62a17ae 159struct bgp_rmap {
160 char *name;
161 struct route_map *map;
73ac8160
DS		 162};
163
d62a17ae 164struct bgp_redist {
d7c0a89a 165 unsigned short instance;
7c8ff89e 166
d62a17ae 167 /* BGP redistribute metric configuration. */
d7c0a89a
QY		 168 uint8_t redist_metric_flag;
169 uint32_t redist_metric;
7c8ff89e 170
d62a17ae 171 /* BGP redistribute route-map. */
172 struct bgp_rmap rmap;
7c8ff89e
DS		 173};
174
ddb5b488
PZ		 175typedef enum {
176 BGP_VPN_POLICY_DIR_FROMVPN = 0,
177 BGP_VPN_POLICY_DIR_TOVPN = 1,
178 BGP_VPN_POLICY_DIR_MAX = 2
179} vpn_policy_direction_t;
180
e70e9f8e
PZ		 181struct vpn_policy {
182 struct bgp *bgp; /* parent */
183 afi_t afi;
184 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
185 struct ecommunity *import_redirect_rtlist;
186 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
187 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
188
189 /* should be mpls_label_t? */
190 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
191 uint32_t tovpn_zebra_vrf_label_last_sent;
192 struct prefix_rd tovpn_rd;
193 struct prefix tovpn_nexthop; /* unset => set to 0 */
194 uint32_t flags;
195#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
196#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
197#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 198
1d4e8b0d
DS		 199 /*
200 * If we are importing another vrf into us keep a list of
201 * vrf names that are being imported into us.
202 */
12a844a5 203 struct list *import_vrf;
1d4e8b0d
DS		 204
205 /*
206 * if we are being exported to another vrf keep a list of
207 * vrf names that we are being exported to.
208 */
12a844a5 209 struct list *export_vrf;
e70e9f8e
PZ		 210};
211
ad4cbda1 212/*
213 * Type of 'struct bgp'.
214 * - Default: The default instance
215 * - VRF: A specific (non-default) VRF
216 * - View: An instance used for route exchange
217 * The "default" instance is treated separately to simplify the code. Note
218 * that if deployed in a Multi-VRF environment, it may not exist.
219 */
d62a17ae 220enum bgp_instance_type {
221 BGP_INSTANCE_TYPE_DEFAULT,
222 BGP_INSTANCE_TYPE_VRF,
223 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 224};
225
718e3744 226/* BGP instance structure. */
d62a17ae 227struct bgp {
228 /* AS number of this BGP instance. */
229 as_t as;
230
231 /* Name of this BGP instance. */
232 char *name;
3572fb26 233 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 234
235 /* Type of instance and VRF id. */
236 enum bgp_instance_type inst_type;
237 vrf_id_t vrf_id;
238
239 /* Reference count to allow peer_delete to finish after bgp_delete */
240 int lock;
241
242 /* Self peer. */
243 struct peer *peer_self;
244
245 /* BGP peer. */
246 struct list *peer;
247 struct hash *peerhash;
248
249 /* BGP peer group. */
250 struct list *group;
251
252 /* The maximum number of BGP dynamic neighbors that can be created */
253 int dynamic_neighbors_limit;
254
255 /* The current number of BGP dynamic neighbors */
256 int dynamic_neighbors_count;
257
258 struct hash *update_groups[BGP_AF_MAX];
259
260 /*
261 * Global statistics for update groups.
262 */
263 struct {
d7c0a89a
QY		 264 uint32_t join_events;
265 uint32_t prune_events;
266 uint32_t merge_events;
267 uint32_t split_events;
268 uint32_t updgrp_switch_events;
269 uint32_t peer_refreshes_combined;
270 uint32_t adj_count;
271 uint32_t merge_checks_triggered;
272
273 uint32_t updgrps_created;
274 uint32_t updgrps_deleted;
275 uint32_t subgrps_created;
276 uint32_t subgrps_deleted;
d62a17ae 277 } update_group_stats;
278
279 /* BGP configuration. */
d7c0a89a 280 uint16_t config;
c2d58d6d 281#define BGP_CONFIG_CLUSTER_ID (1 << 0)
282#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 283
d62a17ae 284 /* BGP router identifier. */
285 struct in_addr router_id;
286 struct in_addr router_id_static;
287 struct in_addr router_id_zebra;
718e3744 288
d62a17ae 289 /* BGP route reflector cluster ID. */
290 struct in_addr cluster_id;
718e3744 291
d62a17ae 292 /* BGP confederation information. */
293 as_t confed_id;
294 as_t *confed_peers;
295 int confed_peers_cnt;
718e3744 296
d62a17ae 297 struct thread
298 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 299
d7c0a89a 300 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 301#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY		 302 uint32_t maxmed_onstartup_value; /* Max-med value when active on
303 start-up */
d62a17ae 304 struct thread
305 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 306 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 307
d7c0a89a 308 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 309#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY		 310 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
311 */
abc920f8
DS		 312#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
313
d7c0a89a
QY		 314 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
315 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 316
317 /* BGP update delay on startup */
318 struct thread *t_update_delay;
319 struct thread *t_establish_wait;
d7c0a89a
QY		 320 uint8_t update_delay_over;
321 uint8_t main_zebra_update_hold;
322 uint8_t main_peers_update_hold;
323 uint16_t v_update_delay;
324 uint16_t v_establish_wait;
d62a17ae 325 char update_delay_begin_time[64];
326 char update_delay_end_time[64];
327 char update_delay_zebra_resume_time[64];
328 char update_delay_peers_resume_time[64];
d7c0a89a
QY		 329 uint32_t established;
330 uint32_t restarted_peers;
331 uint32_t implicit_eors;
332 uint32_t explicit_eors;
f188f2c4
DS		 333#define BGP_UPDATE_DELAY_DEF 0
334#define BGP_UPDATE_DELAY_MIN 0
335#define BGP_UPDATE_DELAY_MAX 3600
336
d62a17ae 337 /* BGP flags. */
d7c0a89a 338 uint32_t flags;
718e3744 339#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
340#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
341#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
342#define BGP_FLAG_MED_CONFED (1 << 3)
343#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
344#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
345#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
346#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
347#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
348#define BGP_FLAG_IMPORT_CHECK (1 << 9)
349#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 350#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 351#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 352#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 353#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 354#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 355#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 356#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 357#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 358#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 359#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 360#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 361
d62a17ae 362 /* BGP Per AF flags */
d7c0a89a 363 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 364#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 365/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK		 366#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
367#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
368#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
369#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
370/* import/export between address families */
371#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
372#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
373/* vrf-route leaking flags */
374#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
375#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
154faa50 376
d62a17ae 377 /* Route table for next-hop lookup cache. */
378 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 379
d62a17ae 380 /* Route table for import-check */
381 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 382
d62a17ae 383 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 384
d62a17ae 385 struct hash *address_hash;
6aeb9e78 386
db0e1937
MK		 387 /* DB for all local tunnel-ips - used mainly for martian checks
388 Currently it only has all VxLan tunnel IPs*/
389 struct hash *tip_hash;
390
d62a17ae 391 /* Static route configuration. */
392 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 393
d62a17ae 394 /* Aggregate address configuration. */
395 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 396
d62a17ae 397 /* BGP routing information base. */
398 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 399
d62a17ae 400 /* BGP table route-map. */
401 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 402
d62a17ae 403 /* BGP redistribute configuration. */
404 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 405
318cac96 406 /* Allocate MPLS labels */
d7c0a89a 407 uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
318cac96 408
f3d32faa
PG		 409 /* Allocate hash entries to store policy routing information
410 * The hash are used to host pbr rules somewhere.
411 * Actually, pbr will only be used by flowspec
412 * those hash elements will have relationship together as
413 * illustrated in below diagram:
414 *
415 * pbr_action a <----- pbr_match i <--- pbr_match_entry 1..n
416 * <----- pbr_match j <--- pbr_match_entry 1..m
27e376d4 417 * <----- pbr_rule k
f3d32faa
PG		 418 *
419 * - here in BGP structure, the list of match and actions will
420 * stand for the list of ipset sets, and table_ids in the kernel
421 * - the arrow above between pbr_match and pbr_action indicate
422 * that a backpointer permits match to find the action
423 * - the arrow betwen match_entry and match is a hash list
424 * contained in match, that lists the whole set of entries
425 */
426 struct hash *pbr_match_hash;
27e376d4 427 struct hash *pbr_rule_hash;
f3d32faa
PG		 428 struct hash *pbr_action_hash;
429
d62a17ae 430 /* timer to re-evaluate neighbor default-originate route-maps */
431 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 432#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
433
d62a17ae 434 /* BGP distance configuration. */
d7c0a89a
QY		 435 uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
436 uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
437 uint8_t distance_local[AFI_MAX][SAFI_MAX];
d62a17ae 438
439 /* BGP default local-preference. */
d7c0a89a 440 uint32_t default_local_pref;
d62a17ae 441
442 /* BGP default subgroup pkt queue max */
d7c0a89a 443 uint32_t default_subgroup_pkt_queue_max;
d62a17ae 444
445 /* BGP default timer. */
d7c0a89a
QY		 446 uint32_t default_holdtime;
447 uint32_t default_keepalive;
d62a17ae 448
449 /* BGP graceful restart */
d7c0a89a
QY		 450 uint32_t restart_time;
451 uint32_t stalepath_time;
d62a17ae 452
453 /* Maximum-paths configuration */
454 struct bgp_maxpaths_cfg {
d7c0a89a
QY		 455 uint16_t maxpaths_ebgp;
456 uint16_t maxpaths_ibgp;
457 uint16_t ibgp_flags;
5e242b0d 458#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 459 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 460
555e09d4
QY		 461 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
462 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
463
37a333fe
QY		 464 /* Automatic coalesce adjust on/off */
465 bool heuristic_coalesce;
14b8641a
QY		 466 /* Actual coalesce time */
467 uint32_t coalesce_time;
adbac85e 468
f26845f9
QY		 469 /* Auto-shutdown new peers */
470 bool autoshutdown;
471
dcc68b5e 472 struct bgp_addpath_bgp_data tx_addpath;
65efcfce
LB		 473
474#if ENABLE_BGP_VNC
d62a17ae 475 struct rfapi_cfg *rfapi_cfg;
476 struct rfapi *rfapi;
65efcfce 477#endif
19df7279 478
d62a17ae 479 /* EVPN related information */
14c1a7bf 480
d62a17ae 481 /* EVI hash table */
482 struct hash *vnihash;
14c1a7bf 483
1a98c087
MK		 484 /* EVPN enable - advertise gateway macip routes */
485 int advertise_gw_macip;
486
d62a17ae 487 /* EVPN enable - advertise local VNIs and their MACs etc. */
488 int advertise_all_vni;
14c1a7bf 489
9dac9fc8
DA		 490 /* RFC 8212 - prevent route leaks. */
491 int ebgp_requires_policy;
492#define DEFAULT_EBGP_POLICY_DISABLED 0
493#define DEFAULT_EBGP_POLICY_ENABLED 1
494
85c8d83b
CS		 495 struct bgp_evpn_info *evpn_info;
496
bf1061d8
VB		 497 /* EVPN - use RFC 8365 to auto-derive RT */
498 int advertise_autort_rfc8365;
499
fd069644
DS		 500 /*
501 * Flooding mechanism for BUM packets for VxLAN-EVPN.
502 */
503 enum vxlan_flood_control vxlan_flood_ctrl;
504
d62a17ae 505 /* Hash table of Import RTs to EVIs */
506 struct hash *import_rt_hash;
14c1a7bf 507
10ebe1ab
MK		 508 /* Hash table of VRF import RTs to VRFs */
509 struct hash *vrf_import_rt_hash;
510
fe1dc5a3
MK		 511 /* L3-VNI corresponding to this vrf */
512 vni_t l3vni;
513
514 /* router-mac to be used in mac-ip routes for this vrf */
515 struct ethaddr rmac;
516
b67a60d2 517 /* originator ip - to be used as NH for type-5 routes */
518 struct in_addr originator_ip;
519
0483af6e 520 /* SVI associated with the L3-VNI corresponding to this vrf */
521 ifindex_t l3vni_svi_ifindex;
522
fe1dc5a3
MK		 523 /* vrf flags */
524 uint32_t vrf_flags;
676f83b9 525#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 526#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
527#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
528#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK		 529#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
530
676f83b9 531
532 /* unique ID for auto derivation of RD for this vrf */
533 uint16_t vrf_rd_id;
534
92708db6 535 /* Automatically derived RD for this VRF */
536 struct prefix_rd vrf_prd_auto;
537
676f83b9 538 /* RD for this VRF */
539 struct prefix_rd vrf_prd;
c581d8b0
MK		 540
541 /* import rt list for the vrf instance */
542 struct list *vrf_import_rtl;
543
544 /* export rt list for the vrf instance */
545 struct list *vrf_export_rtl;
fe1dc5a3 546
6a8657d0
MK		 547 /* list of corresponding l2vnis (struct bgpevpn) */
548 struct list *l2vnis;
549
53c84f78
MK		 550 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
551 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
552
e70e9f8e 553 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 554
4762c213
PG		 555 struct bgp_pbr_config *bgp_pbr_cfg;
556
50f74cf1 557 /* local esi hash table */
558 struct hash *esihash;
559
36dc7588 560 /* Count of peers in established state */
561 uint32_t established_peers;
562
d62a17ae 563 QOBJ_FIELDS
718e3744 564};
19df7279 565DECLARE_QOBJ_TYPE(bgp)
718e3744 566
2a3d5731 567#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 568
d62a17ae 569#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
570 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
571 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
572 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 573
718e3744 574/* BGP peer-group support. */
d62a17ae 575struct peer_group {
576 /* Name of the peer-group. */
577 char *name;
718e3744 578
d62a17ae 579 /* Pointer to BGP. */
580 struct bgp *bgp;
718e3744 581
d62a17ae 582 /* Peer-group client list. */
583 struct list *peer;
f14e6fdb 584
d62a17ae 585 /** Dynamic neighbor listening ranges */
586 struct list *listen_range[AFI_MAX];
587
588 /* Peer-group config */
589 struct peer *conf;
718e3744 590};
591
592/* BGP Notify message format. */
d62a17ae 593struct bgp_notify {
d7c0a89a
QY		 594 uint8_t code;
595 uint8_t subcode;
d62a17ae 596 char *data;
597 bgp_size_t length;
d7c0a89a 598 uint8_t *raw_data;
718e3744 599};
600
601/* Next hop self address. */
d62a17ae 602struct bgp_nexthop {
603 struct interface *ifp;
604 struct in_addr v4;
605 struct in6_addr v6_global;
606 struct in6_addr v6_local;
718e3744 607};
608
a82478b9
DS		 609/* BGP addpath values */
610#define BGP_ADDPATH_RX 1
611#define BGP_ADDPATH_TX 2
612#define BGP_ADDPATH_ID_LEN 4
613
adbac85e
DW		 614#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
615
3f54c705 616/* Route map direction */
2a3d5731
DW		 617#define RMAP_IN 0
618#define RMAP_OUT 1
619#define RMAP_MAX 2
fee0f4c6 620
65efcfce
LB		 621#include "filter.h"
622
718e3744 623/* BGP filter structure. */
d62a17ae 624struct bgp_filter {
625 /* Distribute-list. */
626 struct {
627 char *name;
628 struct access_list *alist;
629 } dlist[FILTER_MAX];
630
631 /* Prefix-list. */
632 struct {
633 char *name;
634 struct prefix_list *plist;
635 } plist[FILTER_MAX];
636
637 /* Filter-list. */
638 struct {
639 char *name;
640 struct as_list *aslist;
641 } aslist[FILTER_MAX];
642
643 /* Route-map. */
644 struct {
645 char *name;
646 struct route_map *map;
647 } map[RMAP_MAX];
648
649 /* Unsuppress-map. */
650 struct {
651 char *name;
652 struct route_map *map;
653 } usmap;
718e3744 654};
655
6d85b15b
JBD		 656/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
657 a peer who's AS is part of our Confederation. */
d62a17ae 658typedef enum {
faa16034
DS		 659 BGP_PEER_UNSPECIFIED,
660 BGP_PEER_IBGP,
d62a17ae 661 BGP_PEER_EBGP,
662 BGP_PEER_INTERNAL,
663 BGP_PEER_CONFED,
6d85b15b
JBD		 664} bgp_peer_sort_t;
665
d6661008
DS		 666/* BGP message header and packet size. */
667#define BGP_MARKER_SIZE 16
668#define BGP_HEADER_SIZE 19
669#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 670#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 671
3f9c7369
DS		 672/*
673 * Trigger delay for bgp_announce_route().
674 */
675#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
676#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
677
d62a17ae 678struct peer_af {
679 /* back pointer to the peer */
680 struct peer *peer;
3f9c7369 681
d62a17ae 682 /* which subgroup the peer_af belongs to */
683 struct update_subgroup *subgroup;
3f9c7369 684
d62a17ae 685 /* for being part of an update subgroup's peer list */
686 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 687
d62a17ae 688 /* for being part of a packet's peer list */
689 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 690
d62a17ae 691 struct bpacket *next_pkt_to_send;
3f9c7369 692
d62a17ae 693 /*
694 * Trigger timer for bgp_announce_route().
695 */
696 struct thread *t_announce_route;
3f9c7369 697
d62a17ae 698 afi_t afi;
699 safi_t safi;
700 int afid;
3f9c7369
DS		 701};
702
718e3744 703/* BGP neighbor structure. */
d62a17ae 704struct peer {
705 /* BGP structure. */
706 struct bgp *bgp;
707
708 /* reference count, primarily to allow bgp_process'ing of route_node's
709 * to be done after a struct peer is deleted.
710 *
711 * named 'lock' for hysterical reasons within Quagga.
712 */
713 int lock;
714
715 /* BGP peer group. */
716 struct peer_group *group;
717 uint64_t version[AFI_MAX][SAFI_MAX];
718
719 /* BGP peer_af structures, per configured AF on this peer */
720 struct peer_af *peer_af_array[BGP_AF_MAX];
721
722 /* Peer's remote AS number. */
723 int as_type;
724 as_t as;
725
726 /* Peer's local AS number. */
727 as_t local_as;
728
729 bgp_peer_sort_t sort;
730
731 /* Peer's Change local AS number. */
732 as_t change_local_as;
733
734 /* Remote router ID. */
735 struct in_addr remote_id;
736
737 /* Local router ID. */
738 struct in_addr local_id;
739
740 /* Packet receive and send buffer. */
424ab01d
QY		 741 pthread_mutex_t io_mtx; // guards ibuf, obuf
742 struct stream_fifo *ibuf; // packets waiting to be processed
743 struct stream_fifo *obuf; // packets waiting to be written
744
74ffbfe6
QY		 745 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
746 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 747
748 struct stream *curr; // the current packet being parsed
d62a17ae 749
750 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 751 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 752 * actual packet is then constructed by concatenating the two.
753 */
754 struct stream *scratch;
755
756 /* the doppelganger peer structure, due to dual TCP conn setup */
757 struct peer *doppelganger;
758
759 /* Status of the peer. */
760 int status;
761 int ostatus;
762
763 /* FSM events, stored for debug purposes.
764 * Note: uchar used for reduced memory usage.
765 */
766 unsigned char cur_event;
767 unsigned char last_event;
768 unsigned char last_major_event;
769
770 /* Peer index, used for dumping TABLE_DUMP_V2 format */
771 uint16_t table_dump_index;
772
773 /* Peer information */
774 int fd; /* File descriptor */
775 int ttl; /* TTL of TCP connection to the peer. */
776 int rtt; /* Estimated round-trip-time from TCP_INFO */
777 int gtsm_hops; /* minimum hopcount to peer */
778 char *desc; /* Description of the peer. */
779 unsigned short port; /* Destination port for peer */
780 char *host; /* Printable address of the peer. */
781 union sockunion su; /* Sockunion address of the peer. */
a80beece 782#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 783 time_t uptime; /* Last Up/Down time */
784 time_t readtime; /* Last read time */
785 time_t resettime; /* Last reset time */
786
d62a17ae 787 char *conf_if; /* neighbor interface config name. */
788 struct interface *ifp; /* corresponding interface */
789 char *ifname; /* bind interface name. */
790 char *update_if;
791 union sockunion *update_source;
792
793 union sockunion *su_local; /* Sockunion of local address. */
794 union sockunion *su_remote; /* Sockunion of remote address. */
795 int shared_network; /* Is this peer shared same network. */
796 struct bgp_nexthop nexthop; /* Nexthop */
797
798 /* Peer address family configuration. */
d7c0a89a
QY		 799 uint8_t afc[AFI_MAX][SAFI_MAX];
800 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
801 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
802 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 803
804 /* Capability flags (reset in bgp_stop) */
d7c0a89a 805 uint32_t cap;
718e3744 806#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
807#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
808#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
809#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
810#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 811#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
812#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 813#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
814#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 815#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
816#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 817#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
818#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 819#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
820#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 821#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
822#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 823
d62a17ae 824 /* Capability flags (reset in bgp_stop) */
d7c0a89a 825 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 826#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
827#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
828#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
829#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
830#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
831#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 832#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
833#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 834#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
835#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
836#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
837#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 838#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
839#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
840#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 841
d62a17ae 842 /* Global configuration flags. */
9fb964de
PM		 843 /*
844 * Parallel array to flags that indicates whether each flag originates
845 * from a peer-group or if it is config that is specific to this
846 * individual peer. If a flag is set independent of the peer-group, the
847 * same bit should be set here. If this peer is a peer-group, this
848 * memory region should be all zeros.
849 *
850 * The assumption is that the default state for all flags is unset,
851 * so if a flag is unset, the corresponding override flag is unset too.
852 * However if a flag is set, the corresponding override flag is set.
853 */
854 uint32_t flags_override;
855 /*
856 * Parallel array to flags that indicates whether the default behavior
857 * of *flags_override* should be inverted. If a flag is unset and the
858 * corresponding invert flag is set, the corresponding override flag
859 * would be set. However if a flag is set and the corresponding invert
860 * flag is unset, the corresponding override flag would be unset.
861 *
862 * This can be used for attributes like *send-community*, which are
863 * implicitely enabled and have to be disabled explicitely, compared to
864 * 'normal' attributes like *next-hop-self* which are implicitely set.
865 *
866 * All operations dealing with flags should apply the following boolean
867 * logic to keep the internal flag system in a sane state:
868 *
869 * value=0 invert=0 Inherit flag if member, otherwise unset flag
870 * value=0 invert=1 Unset flag unconditionally
871 * value=1 invert=0 Set flag unconditionally
872 * value=1 invert=1 Inherit flag if member, otherwise set flag
873 *
874 * Contrary to the implementation of *flags_override*, the flag
875 * inversion state can be set either on the peer OR the peer *and* the
876 * peer-group. This was done on purpose, as the inversion state of a
877 * flag can be determined on either the peer or the peer-group.
878 *
879 * Example: Enabling the cisco configuration mode inverts all flags
880 * related to *send-community* unconditionally for both peer-groups and
881 * peers.
882 *
883 * This behavior is different for interface peers though, which enable
884 * the *extended-nexthop* flag by default, which regular peers do not.
885 * As the peer-group can contain both regular and interface peers, the
886 * flag inversion state must be set on the peer only.
887 *
888 * When a peer inherits the configuration from a peer-group and the
889 * inversion state of the flag differs between peer and peer-group, the
890 * newly set value must equal to the inverted state of the peer-group.
891 */
892 uint32_t flags_invert;
893 /*
894 * Effective array for storing the peer/peer-group flags. In case of a
895 * peer-group, the peer-specific overrides (see flags_override and
896 * flags_invert) must be respected.
897 */
d7c0a89a 898 uint32_t flags;
718e3744 899#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
900#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
901#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
902#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
903#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 904#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 905#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 906#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 907#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
47cbc09b
PM		 908#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
909#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 910#define PEER_FLAG_LONESOUL (1 << 11)
911#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
912#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 913#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
47cbc09b
PM		 914#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
915#define PEER_FLAG_ENFORCE_FIRST_AS (1 << 16) /* enforce-first-as */
b90a8e13
PM		 916#define PEER_FLAG_ROUTEADV (1 << 17) /* route advertise */
917#define PEER_FLAG_TIMER (1 << 18) /* keepalive & holdtime */
918#define PEER_FLAG_TIMER_CONNECT (1 << 19) /* connect timer */
a14810f4
PM		 919#define PEER_FLAG_PASSWORD (1 << 20) /* password */
920#define PEER_FLAG_LOCAL_AS (1 << 21) /* local-as */
921#define PEER_FLAG_UPDATE_SOURCE (1 << 22) /* update-source */
02a82b47 922
d62a17ae 923 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
924 char *tx_shutdown_message;
718e3744 925
d62a17ae 926 /* NSF mode (graceful restart) */
d7c0a89a 927 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 928
04e1c5bb
QY		 929 /* Peer Per AF flags */
930 /*
9fb964de
PM		 931 * Please consult the comments for *flags_override*, *flags_invert* and
932 * *flags* to understand what these three arrays do. The address-family
933 * specific attributes are being treated the exact same way as global
934 * peer attributes.
04e1c5bb
QY		 935 */
936 uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
27c05d4d 937 uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
d7c0a89a 938 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 939#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
940#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
941#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
942#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
943#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
944#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
945#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
946#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
947#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
948#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
949#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
950#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
951#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
952#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
953#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
954#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 955#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 956#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 957#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
958#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 959#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 960#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
d93f7ffc 961#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 962#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 963#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 964
dcc68b5e
MS		 965 enum bgp_addpath_strat addpath_type[AFI_MAX][SAFI_MAX];
966
d62a17ae 967 /* MD5 password */
968 char *password;
718e3744 969
d62a17ae 970 /* default-originate route-map. */
971 struct {
972 char *name;
973 struct route_map *map;
974 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 975
d62a17ae 976 /* Peer status flags. */
d7c0a89a 977 uint16_t sflags;
718e3744 978#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
979#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
980#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
981#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
982#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 983#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
984#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 985
d62a17ae 986 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 987 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 988#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
989#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 990#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
991#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
992#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
993#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 994
b90a8e13 995 /* Configured timer values. */
1588f6f4
QY		 996 _Atomic uint32_t holdtime;
997 _Atomic uint32_t keepalive;
998 _Atomic uint32_t connect;
999 _Atomic uint32_t routeadv;
d62a17ae 1000
1001 /* Timer values. */
1588f6f4
QY		 1002 _Atomic uint32_t v_start;
1003 _Atomic uint32_t v_connect;
1004 _Atomic uint32_t v_holdtime;
1005 _Atomic uint32_t v_keepalive;
1006 _Atomic uint32_t v_routeadv;
1007 _Atomic uint32_t v_pmax_restart;
1008 _Atomic uint32_t v_gr_restart;
d62a17ae 1009
1010 /* Threads. */
1011 struct thread *t_read;
424ab01d 1012 struct thread *t_write;
d62a17ae 1013 struct thread *t_start;
387f984e
QY		 1014 struct thread *t_connect_check_r;
1015 struct thread *t_connect_check_w;
d62a17ae 1016 struct thread *t_connect;
1017 struct thread *t_holdtime;
d62a17ae 1018 struct thread *t_routeadv;
1019 struct thread *t_pmax_restart;
1020 struct thread *t_gr_restart;
1021 struct thread *t_gr_stale;
56257a44 1022 struct thread *t_generate_updgrp_packets;
424ab01d 1023 struct thread *t_process_packet;
d62a17ae 1024
49507a6f 1025 /* Thread flags. */
0545c373 1026 _Atomic uint32_t thread_flags;
b750b0ba
QY		 1027#define PEER_THREAD_WRITES_ON (1 << 0)
1028#define PEER_THREAD_READS_ON (1 << 1)
1029#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 1030 /* workqueues */
1031 struct work_queue *clear_node_queue;
1032
a4d82a8a
PZ		 1033#define PEER_TOTAL_RX(peer) \
1034 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
1035 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
1036 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
1037 + atomic_load_explicit(&peer->refresh_in, \
1038 memory_order_relaxed) \
1039 + atomic_load_explicit(&peer->keepalive_in, \
1040 memory_order_relaxed) \
1041 + atomic_load_explicit(&peer->dynamic_cap_in, \
1042 memory_order_relaxed)
1043
1044#define PEER_TOTAL_TX(peer) \
1045 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
1046 + atomic_load_explicit(&peer->update_out, \
1047 memory_order_relaxed) \
1048 + atomic_load_explicit(&peer->notify_out, \
1049 memory_order_relaxed) \
1050 + atomic_load_explicit(&peer->refresh_out, \
1051 memory_order_relaxed) \
1052 + atomic_load_explicit(&peer->keepalive_out, \
1053 memory_order_relaxed) \
1054 + atomic_load_explicit(&peer->dynamic_cap_out, \
1055 memory_order_relaxed)
0112e9e0 1056
d62a17ae 1057 /* Statistics field */
996c9314
LB		 1058 _Atomic uint32_t open_in; /* Open message input count */
1059 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 1060 _Atomic uint32_t update_in; /* Update message input count */
1061 _Atomic uint32_t update_out; /* Update message ouput count */
1062 _Atomic time_t update_time; /* Update message received time. */
1063 _Atomic uint32_t keepalive_in; /* Keepalive input count */
1064 _Atomic uint32_t keepalive_out; /* Keepalive output count */
1065 _Atomic uint32_t notify_in; /* Notify input count */
1066 _Atomic uint32_t notify_out; /* Notify output count */
1067 _Atomic uint32_t refresh_in; /* Route Refresh input count */
1068 _Atomic uint32_t refresh_out; /* Route Refresh output count */
1069 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 1070 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 1071
1072 /* BGP state count */
d7c0a89a
QY		 1073 uint32_t established; /* Established */
1074 uint32_t dropped; /* Dropped */
d62a17ae 1075
1076 /* Update delay related fields */
d7c0a89a 1077 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 1078 for EOR */
1079
1080 /* Syncronization list and time. */
1081 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
1082 time_t synctime;
1588f6f4
QY		 1083 /* timestamp when the last UPDATE msg was written */
1084 _Atomic time_t last_write;
1085 /* timestamp when the last msg was written */
1086 _Atomic time_t last_update;
d62a17ae 1087
1088 /* Send prefix count. */
1089 unsigned long scount[AFI_MAX][SAFI_MAX];
1090
d62a17ae 1091 /* Notify data. */
1092 struct bgp_notify notify;
1093
d62a17ae 1094 /* Filter structure. */
1095 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
1096
70ee29b4
PM		 1097 /*
1098 * Parallel array to filter that indicates whether each filter
1099 * originates from a peer-group or if it is config that is specific to
1100 * this individual peer. If a filter is set independent of the
1101 * peer-group the appropriate bit should be set here. If this peer is a
1102 * peer-group, this memory region should be all zeros. The assumption
1103 * is that the default state for all flags is unset. Due to filters
1104 * having a direction (e.g. in/out/...), this array has a third
1105 * dimension for storing the overrides independently per direction.
1106 *
1107 * Notes:
1108 * - if a filter for an individual peer is unset, the corresponding
1109 * override flag is unset and the peer is considered to be back in
1110 * sync with the peer-group.
1111 * - This does *not* contain the filter values, rather it contains
1112 * whether the filter in filter (struct bgp_filter) is peer-specific.
1113 */
1114 uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
1115 ? FILTER_MAX
1116 : RMAP_MAX];
1117#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
1118#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
1119#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
1120#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
1121#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
1122
d62a17ae 1123 /* ORF Prefix-list */
1124 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
1125
1126 /* Text description of last attribute rcvd */
1127 char rcvd_attr_str[BUFSIZ];
1128
1129 /* Track if we printed the attribute in debugs */
1130 int rcvd_attr_printed;
1131
1132 /* Prefix count. */
1133 unsigned long pcount[AFI_MAX][SAFI_MAX];
1134
1135 /* Max prefix count. */
1136 unsigned long pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY		 1137 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1138 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1139#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1140
d62a17ae 1141 /* allowas-in. */
1142 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1143
d62a17ae 1144 /* weight */
1145 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1146
d62a17ae 1147 /* peer reset cause */
1148 char last_reset;
e0701b79 1149#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1150#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1151#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1152#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1153#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1154#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1155#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1156#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1157#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1158#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1159#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1160#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1161#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1162#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1163#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1164#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1165#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1166#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1167#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1168#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1169#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1170#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1171#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1172#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 1173#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1174#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 1175 unsigned long last_reset_cause_size;
d7c0a89a 1176 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1177
d62a17ae 1178 /* The kind of route-map Flags.*/
d7c0a89a 1179 uint8_t rmap_type;
ac41b2a2 1180#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1181#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1182#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1183#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1184#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1185#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1186#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1187#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1188
d62a17ae 1189 /* peer specific BFD information */
1190 struct bfd_info *bfd_info;
04b6bdc0 1191
d62a17ae 1192 /* hostname and domainname advertised by host */
1193 char *hostname;
1194 char *domainname;
19df7279 1195
d62a17ae 1196 QOBJ_FIELDS
718e3744 1197};
19df7279 1198DECLARE_QOBJ_TYPE(peer)
718e3744 1199
598ce6bd 1200/* Inherit peer attribute from peer-group. */
e7103a96
PM		 1201#define PEER_ATTR_INHERIT(peer, group, attr) \
1202 ((peer)->attr = (group)->conf->attr)
1203#define PEER_STR_ATTR_INHERIT(peer, group, attr, mt) \
598ce6bd
PM		 1204 do { \
1205 if ((peer)->attr) \
1206 XFREE(mt, (peer)->attr); \
e7103a96
PM		 1207 if ((group)->conf->attr) \
1208 (peer)->attr = XSTRDUP(mt, (group)->conf->attr); \
598ce6bd
PM		 1209 else \
1210 (peer)->attr = NULL; \
1211 } while (0)
a14810f4
PM		 1212#define PEER_SU_ATTR_INHERIT(peer, group, attr) \
1213 do { \
1214 if ((peer)->attr) \
1215 sockunion_free((peer)->attr); \
1216 if ((group)->conf->attr) \
1217 (peer)->attr = sockunion_dup((group)->conf->attr); \
1218 else \
1219 (peer)->attr = NULL; \
1220 } while (0)
598ce6bd 1221
ad4cbda1 1222/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1223#define BGP_PEER_START_SUPPRESSED(P) \
1224 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1225 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1226
0df7c91f
PJ		 1227#define PEER_PASSWORD_MINLEN (1)
1228#define PEER_PASSWORD_MAXLEN (80)
1229
718e3744 1230/* This structure's member directly points incoming packet data
1231 stream. */
d62a17ae 1232struct bgp_nlri {
1233 /* AFI. */
a46a2e9b 1234 uint16_t afi; /* iana_afi_t */
718e3744 1235
d62a17ae 1236 /* SAFI. */
a46a2e9b 1237 uint8_t safi; /* iana_safi_t */
718e3744 1238
d62a17ae 1239 /* Pointer to NLRI byte stream. */
d7c0a89a 1240 uint8_t *nlri;
718e3744 1241
d62a17ae 1242 /* Length of whole NLRI. */
1243 bgp_size_t length;
718e3744 1244};
1245
1246/* BGP versions. */
1247#define BGP_VERSION_4 4
718e3744 1248
1249/* Default BGP port number. */
1250#define BGP_PORT_DEFAULT 179
1251
718e3744 1252/* BGP minimum message size. */
1253#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1254#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1255#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1256#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1257#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1258#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1259
1260/* BGP message types. */
1261#define BGP_MSG_OPEN 1
1262#define BGP_MSG_UPDATE 2
1263#define BGP_MSG_NOTIFY 3
1264#define BGP_MSG_KEEPALIVE 4
1265#define BGP_MSG_ROUTE_REFRESH_NEW 5
1266#define BGP_MSG_CAPABILITY 6
1267#define BGP_MSG_ROUTE_REFRESH_OLD 128
1268
1269/* BGP open optional parameter. */
1270#define BGP_OPEN_OPT_AUTH 1
1271#define BGP_OPEN_OPT_CAP 2
1272
1273/* BGP4 attribute type codes. */
1274#define BGP_ATTR_ORIGIN 1
1275#define BGP_ATTR_AS_PATH 2
1276#define BGP_ATTR_NEXT_HOP 3
1277#define BGP_ATTR_MULTI_EXIT_DISC 4
1278#define BGP_ATTR_LOCAL_PREF 5
1279#define BGP_ATTR_ATOMIC_AGGREGATE 6
1280#define BGP_ATTR_AGGREGATOR 7
1281#define BGP_ATTR_COMMUNITIES 8
1282#define BGP_ATTR_ORIGINATOR_ID 9
1283#define BGP_ATTR_CLUSTER_LIST 10
1284#define BGP_ATTR_DPA 11
1285#define BGP_ATTR_ADVERTISER 12
1286#define BGP_ATTR_RCID_PATH 13
1287#define BGP_ATTR_MP_REACH_NLRI 14
1288#define BGP_ATTR_MP_UNREACH_NLRI 15
1289#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1290#define BGP_ATTR_AS4_PATH 17
1291#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1292#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1293#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1294#define BGP_ATTR_ENCAP 23
57d187bc 1295#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1296#define BGP_ATTR_PREFIX_SID 40
943d595a 1297#if ENABLE_BGP_VNC_ATTR
65efcfce
LB		 1298#define BGP_ATTR_VNC 255
1299#endif
718e3744 1300
1301/* BGP update origin. */
1302#define BGP_ORIGIN_IGP 0
1303#define BGP_ORIGIN_EGP 1
1304#define BGP_ORIGIN_INCOMPLETE 2
1305
1306/* BGP notify message codes. */
1307#define BGP_NOTIFY_HEADER_ERR 1
1308#define BGP_NOTIFY_OPEN_ERR 2
1309#define BGP_NOTIFY_UPDATE_ERR 3
1310#define BGP_NOTIFY_HOLD_ERR 4
1311#define BGP_NOTIFY_FSM_ERR 5
1312#define BGP_NOTIFY_CEASE 6
1313#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1314
4b4e07d2
DT		 1315#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1316
718e3744 1317/* BGP_NOTIFY_HEADER_ERR sub codes. */
1318#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1319#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1320#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1321
1322/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1323#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1324#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1325#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1326#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1327#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1328#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1329#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1330#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1331
1332/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1333#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1334#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1335#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1336#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1337#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1338#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1339#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1340#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1341#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1342#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1343#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1344
4b4e07d2 1345/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1346#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1347#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1348#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1349#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1350#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1351#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1352#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1353#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1354
1355/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1356#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1357#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1358#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1359
1360/* BGP finite state machine status. */
1361#define Idle 1
1362#define Connect 2
1363#define Active 3
1364#define OpenSent 4
1365#define OpenConfirm 5
1366#define Established 6
ca058a30
PJ		 1367#define Clearing 7
1368#define Deleted 8
1369#define BGP_STATUS_MAX 9
718e3744 1370
1371/* BGP finite state machine events. */
1372#define BGP_Start 1
1373#define BGP_Stop 2
1374#define TCP_connection_open 3
1375#define TCP_connection_closed 4
1376#define TCP_connection_open_failed 5
1377#define TCP_fatal_error 6
1378#define ConnectRetry_timer_expired 7
1379#define Hold_Timer_expired 8
1380#define KeepAlive_timer_expired 9
1381#define Receive_OPEN_message 10
1382#define Receive_KEEPALIVE_message 11
1383#define Receive_UPDATE_message 12
1384#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1385#define Clearing_Completed 14
1386#define BGP_EVENTS_MAX 15
718e3744 1387
1388/* BGP timers default value. */
8efe88ea 1389/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1390#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1391#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1392#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1393#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1394#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1395#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1396
1397/* BGP default local preference. */
1398#define BGP_DEFAULT_LOCAL_PREF 100
1399
7f323236
DW		 1400/* BGP local-preference to send when 'bgp graceful-shutdown'
1401 * is configured */
1402#define BGP_GSHUT_LOCAL_PREF 0
1403
3f9c7369
DS		 1404/* BGP default subgroup packet queue max . */
1405#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1406
538621f2 1407/* BGP graceful restart */
1408#define BGP_DEFAULT_RESTART_TIME 120
1409#define BGP_DEFAULT_STALEPATH_TIME 360
1410
718e3744 1411/* BGP uptime string length. */
1412#define BGP_UPTIME_LEN 25
1413
1414/* Default configuration settings for bgpd. */
1415#define BGP_VTY_PORT 2605
718e3744 1416#define BGP_DEFAULT_CONFIG "bgpd.conf"
1417
1418/* Check AS path loop when we send NLRI. */
1419/* #define BGP_SEND_ASPATH_CHECK */
1420
f14e6fdb
DS		 1421/* BGP Dynamic Neighbors feature */
1422#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1423#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1424#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1425
718e3744 1426/* Flag for peer_clear_soft(). */
d62a17ae 1427enum bgp_clear_type {
1428 BGP_CLEAR_SOFT_NONE,
1429 BGP_CLEAR_SOFT_OUT,
1430 BGP_CLEAR_SOFT_IN,
1431 BGP_CLEAR_SOFT_BOTH,
1432 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1433};
1434
1435/* Macros. */
424ab01d 1436#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1437#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1438#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1439 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1440
718e3744 1441/* BGP error codes. */
1442#define BGP_SUCCESS 0
1443#define BGP_ERR_INVALID_VALUE -1
1444#define BGP_ERR_INVALID_FLAG -2
1445#define BGP_ERR_INVALID_AS -3
1446#define BGP_ERR_INVALID_BGP -4
1447#define BGP_ERR_PEER_GROUP_MEMBER -5
1448#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1449#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1450#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1451#define BGP_ERR_PEER_GROUP_MISMATCH -9
1452#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1453#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1454#define BGP_ERR_AS_MISMATCH -12
1455#define BGP_ERR_PEER_FLAG_CONFLICT -13
1456#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1457#define BGP_ERR_PEER_FILTER_CONFLICT -15
1458#define BGP_ERR_NOT_INTERNAL_PEER -16
1459#define BGP_ERR_REMOVE_PRIVATE_AS -17
1460#define BGP_ERR_AF_UNCONFIGURED -18
1461#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1462#define BGP_ERR_INSTANCE_MISMATCH -20
1463#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1464#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1465#define BGP_ERR_TCPSIG_FAILED -23
1466#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1467#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1468#define BGP_ERR_NO_INTERFACE_CONFIG -26
1469#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1470#define BGP_ERR_AS_OVERRIDE -28
1471#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1472#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1473#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1474#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1475#define BGP_ERR_MAX -33
63fa10b5 1476#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1477#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1478
3f9c7369
DS		 1479/*
1480 * Enumeration of different policy kinds a peer can be configured with.
1481 */
d62a17ae 1482typedef enum {
1483 BGP_POLICY_ROUTE_MAP,
1484 BGP_POLICY_FILTER_LIST,
1485 BGP_POLICY_PREFIX_LIST,
1486 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1487} bgp_policy_type_e;
1488
dcc68b5e
MS		 1489/* peer_flag_change_type. */
1490enum peer_change_type {
1491 peer_change_none,
1492 peer_change_reset,
1493 peer_change_reset_in,
1494 peer_change_reset_out,
1495};
1496
718e3744 1497extern struct bgp_master *bm;
37fe7731 1498extern unsigned int multipath_num;
718e3744 1499
718e3744 1500/* Prototypes. */
d62a17ae 1501extern void bgp_terminate(void);
1502extern void bgp_reset(void);
1503extern time_t bgp_clock(void);
1504extern void bgp_zclient_reset(void);
d62a17ae 1505extern struct bgp *bgp_get_default(void);
1506extern struct bgp *bgp_lookup(as_t, const char *);
1507extern struct bgp *bgp_lookup_by_name(const char *);
1508extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1509extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1510extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1511extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1512extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1513extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1514extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1515extern struct peer_group *peer_group_get(struct bgp *, const char *);
1516extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1517 union sockunion *,
1518 struct peer_group *);
1519extern struct prefix *
1520peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1521extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1522 struct prefix *,
1523 struct prefix **);
1524extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1525 union sockunion *);
28066f4b
DS		 1526
1527/*
1528 * Peers are incredibly easy to memory leak
1529 * due to the various ways that they are actually used
1530 * Provide some functionality to debug locks and unlocks
1531 */
1532extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1533extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1534#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1535#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1536
d62a17ae 1537extern bgp_peer_sort_t peer_sort(struct peer *peer);
1538extern int peer_active(struct peer *);
1539extern int peer_active_nego(struct peer *);
1540extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1541extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1542 as_t, as_t, int, afi_t, safi_t,
1543 struct peer_group *);
1544extern struct peer *peer_create_accept(struct bgp *);
1545extern void peer_xfer_config(struct peer *dst, struct peer *src);
94d4c685
DS		 1546extern char *peer_uptime(time_t uptime2, char *buf, size_t len, bool use_json,
1547 json_object *json);
856ca177 1548
d62a17ae 1549extern int bgp_config_write(struct vty *);
6b0655a2 1550
d62a17ae 1551extern void bgp_master_init(struct thread_master *master);
718e3744 1552
f533be73 1553extern void bgp_init(unsigned short instance);
419dfe6a 1554extern void bgp_pthreads_run(void);
2d4ee774 1555extern void bgp_pthreads_finish(void);
d62a17ae 1556extern void bgp_route_map_init(void);
1557extern void bgp_session_reset(struct peer *);
718e3744 1558
d62a17ae 1559extern int bgp_option_set(int);
1560extern int bgp_option_unset(int);
1561extern int bgp_option_check(int);
718e3744 1562
d62a17ae 1563extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1564extern void bgp_instance_up(struct bgp *);
1565extern void bgp_instance_down(struct bgp *);
1566extern int bgp_delete(struct bgp *);
718e3744 1567
e5619c28
PG		 1568extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1569 vrf_id_t old_vrf_id, bool create);
1570
d62a17ae 1571extern int bgp_flag_set(struct bgp *, int);
1572extern int bgp_flag_unset(struct bgp *, int);
1573extern int bgp_flag_check(struct bgp *, int);
718e3744 1574
d62a17ae 1575extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1576extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1577
d62a17ae 1578extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1579extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1580
d62a17ae 1581extern int bgp_confederation_id_set(struct bgp *, as_t);
1582extern int bgp_confederation_id_unset(struct bgp *);
1583extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1584
d62a17ae 1585extern int bgp_confederation_peers_add(struct bgp *, as_t);
1586extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1587
d7c0a89a 1588extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime);
d62a17ae 1589extern int bgp_timers_unset(struct bgp *);
718e3744 1590
d7c0a89a 1591extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1592extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1593
d7c0a89a 1594extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1595extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1596
d62a17ae 1597extern int bgp_listen_limit_set(struct bgp *, int);
1598extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1599
d62a17ae 1600extern int bgp_update_delay_active(struct bgp *);
1601extern int bgp_update_delay_configured(struct bgp *);
318cac96 1602extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1603extern void peer_as_change(struct peer *, as_t, int);
1604extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1605 int, afi_t, safi_t);
1606extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1607extern int peer_delete(struct peer *peer);
1608extern int peer_group_delete(struct peer_group *);
1609extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1610extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1611
d62a17ae 1612extern int peer_activate(struct peer *, afi_t, safi_t);
1613extern int peer_deactivate(struct peer *, afi_t, safi_t);
1614extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1615
d62a17ae 1616extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1617 struct peer_group *, as_t *);
718e3744 1618
d7c0a89a
QY		 1619extern int peer_flag_set(struct peer *, uint32_t);
1620extern int peer_flag_unset(struct peer *, uint32_t);
9fb964de 1621extern void peer_flag_inherit(struct peer *peer, uint32_t flag);
718e3744 1622
d7c0a89a
QY		 1623extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1624extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1625extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
cf9ac8bf
PM		 1626extern void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi,
1627 uint32_t flag);
dcc68b5e
MS		 1628extern void peer_change_action(struct peer *peer, afi_t afi, safi_t safi,
1629 enum peer_change_type type);
718e3744 1630
d62a17ae 1631extern int peer_ebgp_multihop_set(struct peer *, int);
1632extern int peer_ebgp_multihop_unset(struct peer *);
1633extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1634
d62a17ae 1635extern int peer_description_set(struct peer *, const char *);
1636extern int peer_description_unset(struct peer *);
718e3744 1637
d62a17ae 1638extern int peer_update_source_if_set(struct peer *, const char *);
1639extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1640extern int peer_update_source_unset(struct peer *);
718e3744 1641
1de27621
DA		 1642extern int peer_default_originate_set(struct peer *peer, afi_t afi, safi_t safi,
1643 const char *rmap,
1644 struct route_map *route_map);
d62a17ae 1645extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1646
d7c0a89a 1647extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1648extern int peer_port_unset(struct peer *);
718e3744 1649
d7c0a89a 1650extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1651extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1652
d7c0a89a
QY		 1653extern int peer_timers_set(struct peer *, uint32_t keepalive,
1654 uint32_t holdtime);
d62a17ae 1655extern int peer_timers_unset(struct peer *);
718e3744 1656
d7c0a89a 1657extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1658extern int peer_timers_connect_unset(struct peer *);
718e3744 1659
d7c0a89a 1660extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1661extern int peer_advertise_interval_unset(struct peer *);
718e3744 1662
d62a17ae 1663extern void peer_interface_set(struct peer *, const char *);
1664extern void peer_interface_unset(struct peer *);
718e3744 1665
d62a17ae 1666extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1667extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1668
d62a17ae 1669extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1670extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1671
d62a17ae 1672extern int peer_local_as_set(struct peer *, as_t, int, int);
1673extern int peer_local_as_unset(struct peer *);
718e3744 1674
d62a17ae 1675extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1676 const char *);
1677extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1678
d62a17ae 1679extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1680extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1681
1de27621
DA		 1682extern int peer_route_map_set(struct peer *peer, afi_t afi, safi_t safi, int,
1683 const char *name, struct route_map *route_map);
d62a17ae 1684extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1685
1de27621
DA		 1686extern int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi,
1687 const char *name,
1688 struct route_map *route_map);
0df7c91f 1689
d62a17ae 1690extern int peer_password_set(struct peer *, const char *);
1691extern int peer_password_unset(struct peer *);
0df7c91f 1692
d62a17ae 1693extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1694
d7c0a89a
QY		 1695extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1696 uint8_t, int, uint16_t);
d62a17ae 1697extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1698
d62a17ae 1699extern int peer_clear(struct peer *, struct listnode **);
1700extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1701
d62a17ae 1702extern int peer_ttl_security_hops_set(struct peer *, int);
1703extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1704
d62a17ae 1705extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1706extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1707
d62a17ae 1708extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1709extern void bgp_route_map_terminate(void);
16286195 1710
d62a17ae 1711extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1712
5c525538 1713extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1714 afi_t *afi, safi_t *safi);
1715extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1716 iana_afi_t *pkt_afi,
1717 iana_safi_t *pkt_safi);
9cabb64b 1718
d62a17ae 1719extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1720extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1721extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1722
ffd0c037 1723extern void bgp_close(void);
92375c91
JB		 1724extern void bgp_free(struct bgp *);
1725
1726static inline struct bgp *bgp_lock(struct bgp *bgp)
1727{
1728 bgp->lock++;
1729 return bgp;
1730}
1731
1732static inline void bgp_unlock(struct bgp *bgp)
1733{
1734 assert(bgp->lock > 0);
1735 if (--bgp->lock == 0)
1736 bgp_free(bgp);
1737}
ffd0c037 1738
d62a17ae 1739static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1740{
d62a17ae 1741 switch (afi) {
1742 case AFI_IP:
1743 switch (safi) {
1744 case SAFI_UNICAST:
1745 return BGP_AF_IPV4_UNICAST;
1746 break;
1747 case SAFI_MULTICAST:
1748 return BGP_AF_IPV4_MULTICAST;
1749 break;
1750 case SAFI_LABELED_UNICAST:
1751 return BGP_AF_IPV4_LBL_UNICAST;
1752 break;
1753 case SAFI_MPLS_VPN:
1754 return BGP_AF_IPV4_VPN;
1755 break;
1756 case SAFI_ENCAP:
1757 return BGP_AF_IPV4_ENCAP;
1758 break;
7c40bf39 1759 case SAFI_FLOWSPEC:
1760 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1761 default:
1762 return BGP_AF_MAX;
1763 break;
1764 }
1765 break;
1766 case AFI_IP6:
1767 switch (safi) {
1768 case SAFI_UNICAST:
1769 return BGP_AF_IPV6_UNICAST;
1770 break;
1771 case SAFI_MULTICAST:
1772 return BGP_AF_IPV6_MULTICAST;
1773 break;
1774 case SAFI_LABELED_UNICAST:
1775 return BGP_AF_IPV6_LBL_UNICAST;
1776 break;
1777 case SAFI_MPLS_VPN:
1778 return BGP_AF_IPV6_VPN;
1779 break;
1780 case SAFI_ENCAP:
1781 return BGP_AF_IPV6_ENCAP;
1782 break;
7c40bf39 1783 case SAFI_FLOWSPEC:
1784 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1785 default:
1786 return BGP_AF_MAX;
1787 break;
1788 }
1789 break;
1790 case AFI_L2VPN:
1791 switch (safi) {
1792 case SAFI_EVPN:
1793 return BGP_AF_L2VPN_EVPN;
1794 break;
1795 default:
1796 return BGP_AF_MAX;
1797 break;
1798 }
3f9c7369 1799 default:
d62a17ae 1800 return BGP_AF_MAX;
1801 break;
3f9c7369 1802 }
3f9c7369
DS		 1803}
1804
c8560b44 1805/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1806static inline int peer_group_active(struct peer *peer)
3f9c7369 1807{
d62a17ae 1808 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1809 return 1;
1810 return 0;
3f9c7369
DS		 1811}
1812
1813/* If peer is negotiated at least one address family return 1. */
d62a17ae 1814static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1815{
d62a17ae 1816 if (peer->afc_nego[afi][SAFI_UNICAST]
1817 || peer->afc_nego[afi][SAFI_MULTICAST]
1818 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1819 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1820 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1821 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1822 || peer->afc_nego[afi][SAFI_EVPN])
1823 return 1;
1824 return 0;
3f9c7369
DS		 1825}
1826
f14e6fdb 1827/* If at least one address family activated for group, return 1. */
d62a17ae 1828static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1829{
d62a17ae 1830 struct peer *peer = group->conf;
1831
1832 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1833 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 1834 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 1835 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1836 || peer->afc[AFI_IP6][SAFI_UNICAST]
1837 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1838 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1839 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1840 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 1841 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 1842 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1843 return 1;
1844 return 0;
f14e6fdb
DS		 1845}
1846
d62a17ae 1847static inline char *timestamp_string(time_t ts)
3f9c7369 1848{
d62a17ae 1849 time_t tbuf;
1850 tbuf = time(NULL) - (bgp_clock() - ts);
1851 return ctime(&tbuf);
3f9c7369
DS		 1852}
1853
d62a17ae 1854static inline int peer_established(struct peer *peer)
3f9c7369 1855{
d62a17ae 1856 if (peer->status == Established)
1857 return 1;
1858 return 0;
3f9c7369
DS		 1859}
1860
d62a17ae 1861static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1862{
d62a17ae 1863 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1864}
1865
d62a17ae 1866static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1867{
d62a17ae 1868 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1869}
1870
d1be1f08 1871/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1872static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1873{
d62a17ae 1874 struct vrf *vrf;
d1be1f08 1875
d62a17ae 1876 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1877 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1878 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1879 vrf = vrf_lookup_by_name(bgp->name);
1880 else
1881 vrf = NULL;
d1be1f08 1882
d62a17ae 1883 return vrf;
d1be1f08 1884}
1885
1886/* Link BGP instance to VRF. */
d62a17ae 1887static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1888{
d62a17ae 1889 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1890 if (vrf->info != (void *)bgp)
1891 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1892}
1893
1894/* Unlink BGP instance from VRF. */
d62a17ae 1895static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1896{
d62a17ae 1897 if (vrf->info == (void *)bgp) {
1898 vrf->info = NULL;
1899 bgp_unlock(bgp);
1900 }
1901 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1902}
1903
d62a17ae 1904extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1905
1906/* For benefit of rfapi */
d62a17ae 1907extern struct peer *peer_new(struct bgp *bgp);
00d252cb 1908#endif /* _QUAGGA_BGPD_H */
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