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bgpd: Add some vrf <-> vrf code comments
[mirror_frr.git] / bgpd / bgpd.h
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718e3744 1/* BGP message definition header.
896014f4
DL		 2 * Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
718e3744 20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
19df7279 24#include "qobj.h"
d3ecc69e
QY		 25#include <pthread.h>
26
856ca177 27#include "lib/json.h"
6aeb9e78 28#include "vrf.h"
94c60424 29#include "vty.h"
6aeb9e78 30
718e3744 31/* For union sockunion. */
3f9c7369 32#include "queue.h"
718e3744 33#include "sockunion.h"
518f0eb1 34#include "routemap.h"
ffd0c037 35#include "linklist.h"
8efe88ea 36#include "defaults.h"
4a1ab8e4 37#include "bgp_memory.h"
14c1a7bf 38#include "bitfield.h"
fe1dc5a3 39#include "vxlan.h"
955bfd98 40#include "bgp_labelpool.h"
718e3744 41
04b6bdc0 42#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 43#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 44
5c81b96a 45/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
46#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
47
3f9c7369
DS		 48struct update_subgroup;
49struct bpacket;
50
0299c004
DS		 51/*
52 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 53 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
54 * behavior
0299c004
DS		 55 * in the system.
56 */
d62a17ae 57enum { AS_UNSPECIFIED = 0,
58 AS_SPECIFIED,
59 AS_INTERNAL,
60 AS_EXTERNAL,
0299c004
DS		 61};
62
718e3744 63/* Typedef BGP specific types. */
d7c0a89a
QY		 64typedef uint32_t as_t;
65typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
66typedef uint16_t bgp_size_t;
718e3744 67
d62a17ae 68#define max(a, b) \
69 ({ \
70 __typeof__(a) _a = (a); \
71 __typeof__(b) _b = (b); \
72 _a > _b ? _a : _b; \
73 })
74
75enum bgp_af_index {
76 BGP_AF_START,
77 BGP_AF_IPV4_UNICAST = BGP_AF_START,
78 BGP_AF_IPV4_MULTICAST,
79 BGP_AF_IPV4_VPN,
80 BGP_AF_IPV6_UNICAST,
81 BGP_AF_IPV6_MULTICAST,
82 BGP_AF_IPV6_VPN,
83 BGP_AF_IPV4_ENCAP,
84 BGP_AF_IPV6_ENCAP,
85 BGP_AF_L2VPN_EVPN,
86 BGP_AF_IPV4_LBL_UNICAST,
87 BGP_AF_IPV6_LBL_UNICAST,
7c40bf39 88 BGP_AF_IPV4_FLOWSPEC,
89 BGP_AF_IPV6_FLOWSPEC,
d62a17ae 90 BGP_AF_MAX
3f9c7369
DS		 91};
92
d62a17ae 93#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 94
d62a17ae 95#define FOREACH_AFI_SAFI(afi, safi) \
96 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
97 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 98
718e3744 99/* BGP master for system wide configurations and variables. */
d62a17ae 100struct bgp_master {
101 /* BGP instance list. */
102 struct list *bgp;
103
104 /* BGP thread master. */
105 struct thread_master *master;
718e3744 106
0ca8b79f 107/* BGP pthreads. */
424ab01d 108#define PTHREAD_IO (1 << 1)
0ca8b79f 109#define PTHREAD_KEEPALIVES (1 << 2)
2d4ee774 110
d62a17ae 111 /* work queues */
112 struct work_queue *process_main_queue;
87d4a781 113
d62a17ae 114 /* Listening sockets */
115 struct list *listen_sockets;
718e3744 116
d62a17ae 117 /* BGP port number. */
d7c0a89a 118 uint16_t port;
3a02d1f7 119
d62a17ae 120 /* Listener address */
121 char *address;
718e3744 122
d62a17ae 123 /* BGP start time. */
124 time_t start_time;
125
126 /* Various BGP global configuration. */
d7c0a89a 127 uint8_t options;
718e3744 128#define BGP_OPT_NO_FIB (1 << 0)
129#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
130#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 131#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369 132
d62a17ae 133 uint64_t updgrp_idspace;
134 uint64_t subgrp_idspace;
5fe9f963 135
d62a17ae 136 /* timer to dampen route map changes */
137 struct thread *t_rmap_update; /* Handle route map updates */
d7c0a89a 138 uint32_t rmap_update_timer; /* Route map update timer */
5fe9f963 139#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 140
e9eb5f63 141 /* Id space for automatic RD derivation for an EVI/VRF */
142 bitfield_t rd_idspace;
143
955bfd98
PZ		 144 /* dynamic mpls label allocation pool */
145 struct labelpool labelpool;
146
d62a17ae 147 QOBJ_FIELDS
718e3744 148};
19df7279 149DECLARE_QOBJ_TYPE(bgp_master)
718e3744 150
73ac8160 151/* BGP route-map structure. */
d62a17ae 152struct bgp_rmap {
153 char *name;
154 struct route_map *map;
73ac8160
DS		 155};
156
d62a17ae 157struct bgp_redist {
d7c0a89a 158 unsigned short instance;
7c8ff89e 159
d62a17ae 160 /* BGP redistribute metric configuration. */
d7c0a89a
QY		 161 uint8_t redist_metric_flag;
162 uint32_t redist_metric;
7c8ff89e 163
d62a17ae 164 /* BGP redistribute route-map. */
165 struct bgp_rmap rmap;
7c8ff89e
DS		 166};
167
ddb5b488
PZ		 168typedef enum {
169 BGP_VPN_POLICY_DIR_FROMVPN = 0,
170 BGP_VPN_POLICY_DIR_TOVPN = 1,
171 BGP_VPN_POLICY_DIR_MAX = 2
172} vpn_policy_direction_t;
173
e70e9f8e
PZ		 174struct vpn_policy {
175 struct bgp *bgp; /* parent */
176 afi_t afi;
177 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
178 struct ecommunity *import_redirect_rtlist;
179 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
180 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
181
182 /* should be mpls_label_t? */
183 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
184 uint32_t tovpn_zebra_vrf_label_last_sent;
185 struct prefix_rd tovpn_rd;
186 struct prefix tovpn_nexthop; /* unset => set to 0 */
187 uint32_t flags;
188#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
189#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
190#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 191
1d4e8b0d
DS		 192 /*
193 * If we are importing another vrf into us keep a list of
194 * vrf names that are being imported into us.
195 */
12a844a5 196 struct list *import_vrf;
1d4e8b0d
DS		 197
198 /*
199 * if we are being exported to another vrf keep a list of
200 * vrf names that we are being exported to.
201 */
12a844a5 202 struct list *export_vrf;
e70e9f8e
PZ		 203};
204
ad4cbda1 205/*
206 * Type of 'struct bgp'.
207 * - Default: The default instance
208 * - VRF: A specific (non-default) VRF
209 * - View: An instance used for route exchange
210 * The "default" instance is treated separately to simplify the code. Note
211 * that if deployed in a Multi-VRF environment, it may not exist.
212 */
d62a17ae 213enum bgp_instance_type {
214 BGP_INSTANCE_TYPE_DEFAULT,
215 BGP_INSTANCE_TYPE_VRF,
216 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 217};
218
718e3744 219/* BGP instance structure. */
d62a17ae 220struct bgp {
221 /* AS number of this BGP instance. */
222 as_t as;
223
224 /* Name of this BGP instance. */
225 char *name;
3572fb26 226 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 227
228 /* Type of instance and VRF id. */
229 enum bgp_instance_type inst_type;
230 vrf_id_t vrf_id;
231
232 /* Reference count to allow peer_delete to finish after bgp_delete */
233 int lock;
234
235 /* Self peer. */
236 struct peer *peer_self;
237
238 /* BGP peer. */
239 struct list *peer;
240 struct hash *peerhash;
241
242 /* BGP peer group. */
243 struct list *group;
244
245 /* The maximum number of BGP dynamic neighbors that can be created */
246 int dynamic_neighbors_limit;
247
248 /* The current number of BGP dynamic neighbors */
249 int dynamic_neighbors_count;
250
251 struct hash *update_groups[BGP_AF_MAX];
252
253 /*
254 * Global statistics for update groups.
255 */
256 struct {
d7c0a89a
QY		 257 uint32_t join_events;
258 uint32_t prune_events;
259 uint32_t merge_events;
260 uint32_t split_events;
261 uint32_t updgrp_switch_events;
262 uint32_t peer_refreshes_combined;
263 uint32_t adj_count;
264 uint32_t merge_checks_triggered;
265
266 uint32_t updgrps_created;
267 uint32_t updgrps_deleted;
268 uint32_t subgrps_created;
269 uint32_t subgrps_deleted;
d62a17ae 270 } update_group_stats;
271
272 /* BGP configuration. */
d7c0a89a 273 uint16_t config;
c2d58d6d 274#define BGP_CONFIG_CLUSTER_ID (1 << 0)
275#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 276
d62a17ae 277 /* BGP router identifier. */
278 struct in_addr router_id;
279 struct in_addr router_id_static;
280 struct in_addr router_id_zebra;
718e3744 281
d62a17ae 282 /* BGP route reflector cluster ID. */
283 struct in_addr cluster_id;
718e3744 284
d62a17ae 285 /* BGP confederation information. */
286 as_t confed_id;
287 as_t *confed_peers;
288 int confed_peers_cnt;
718e3744 289
d62a17ae 290 struct thread
291 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 292
d7c0a89a 293 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 294#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY		 295 uint32_t maxmed_onstartup_value; /* Max-med value when active on
296 start-up */
d62a17ae 297 struct thread
298 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 299 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 300
d7c0a89a 301 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 302#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY		 303 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
304 */
abc920f8
DS		 305#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
306
d7c0a89a
QY		 307 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
308 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 309
310 /* BGP update delay on startup */
311 struct thread *t_update_delay;
312 struct thread *t_establish_wait;
d7c0a89a
QY		 313 uint8_t update_delay_over;
314 uint8_t main_zebra_update_hold;
315 uint8_t main_peers_update_hold;
316 uint16_t v_update_delay;
317 uint16_t v_establish_wait;
d62a17ae 318 char update_delay_begin_time[64];
319 char update_delay_end_time[64];
320 char update_delay_zebra_resume_time[64];
321 char update_delay_peers_resume_time[64];
d7c0a89a
QY		 322 uint32_t established;
323 uint32_t restarted_peers;
324 uint32_t implicit_eors;
325 uint32_t explicit_eors;
f188f2c4
DS		 326#define BGP_UPDATE_DELAY_DEF 0
327#define BGP_UPDATE_DELAY_MIN 0
328#define BGP_UPDATE_DELAY_MAX 3600
329
d62a17ae 330 /* BGP flags. */
d7c0a89a 331 uint32_t flags;
718e3744 332#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
333#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
334#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
335#define BGP_FLAG_MED_CONFED (1 << 3)
336#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
337#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
338#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
339#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
340#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
341#define BGP_FLAG_IMPORT_CHECK (1 << 9)
342#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 343#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 344#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 345#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 346#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 347#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 348#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 349#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 350#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 351#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 352#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 353#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 354
d62a17ae 355 /* BGP Per AF flags */
d7c0a89a 356 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 357#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 358/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK		 359#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
360#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
361#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
362#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
363/* import/export between address families */
364#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
365#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
366/* vrf-route leaking flags */
367#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
368#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
154faa50
MK		 369
370
d62a17ae 371 /* Route table for next-hop lookup cache. */
372 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 373
d62a17ae 374 /* Route table for import-check */
375 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 376
d62a17ae 377 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 378
d62a17ae 379 struct hash *address_hash;
6aeb9e78 380
db0e1937
MK		 381 /* DB for all local tunnel-ips - used mainly for martian checks
382 Currently it only has all VxLan tunnel IPs*/
383 struct hash *tip_hash;
384
d62a17ae 385 /* Static route configuration. */
386 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 387
d62a17ae 388 /* Aggregate address configuration. */
389 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 390
d62a17ae 391 /* BGP routing information base. */
392 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 393
d62a17ae 394 /* BGP table route-map. */
395 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 396
d62a17ae 397 /* BGP redistribute configuration. */
398 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 399
318cac96 400 /* Allocate MPLS labels */
d7c0a89a 401 uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
318cac96 402
d62a17ae 403 /* timer to re-evaluate neighbor default-originate route-maps */
404 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 405#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
406
d62a17ae 407 /* BGP distance configuration. */
d7c0a89a
QY		 408 uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
409 uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
410 uint8_t distance_local[AFI_MAX][SAFI_MAX];
d62a17ae 411
412 /* BGP default local-preference. */
d7c0a89a 413 uint32_t default_local_pref;
d62a17ae 414
415 /* BGP default subgroup pkt queue max */
d7c0a89a 416 uint32_t default_subgroup_pkt_queue_max;
d62a17ae 417
418 /* BGP default timer. */
d7c0a89a
QY		 419 uint32_t default_holdtime;
420 uint32_t default_keepalive;
d62a17ae 421
422 /* BGP graceful restart */
d7c0a89a
QY		 423 uint32_t restart_time;
424 uint32_t stalepath_time;
d62a17ae 425
426 /* Maximum-paths configuration */
427 struct bgp_maxpaths_cfg {
d7c0a89a
QY		 428 uint16_t maxpaths_ebgp;
429 uint16_t maxpaths_ibgp;
430 uint16_t ibgp_flags;
5e242b0d 431#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 432 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 433
555e09d4
QY		 434 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
435 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
436
37a333fe
QY		 437 /* Automatic coalesce adjust on/off */
438 bool heuristic_coalesce;
14b8641a
QY		 439 /* Actual coalesce time */
440 uint32_t coalesce_time;
adbac85e 441
f26845f9
QY		 442 /* Auto-shutdown new peers */
443 bool autoshutdown;
444
d7c0a89a 445 uint32_t addpath_tx_id;
d62a17ae 446 int addpath_tx_used[AFI_MAX][SAFI_MAX];
65efcfce
LB		 447
448#if ENABLE_BGP_VNC
d62a17ae 449 struct rfapi_cfg *rfapi_cfg;
450 struct rfapi *rfapi;
65efcfce 451#endif
19df7279 452
d62a17ae 453 /* EVPN related information */
14c1a7bf 454
d62a17ae 455 /* EVI hash table */
456 struct hash *vnihash;
14c1a7bf 457
1a98c087
MK		 458 /* EVPN enable - advertise gateway macip routes */
459 int advertise_gw_macip;
460
d62a17ae 461 /* EVPN enable - advertise local VNIs and their MACs etc. */
462 int advertise_all_vni;
14c1a7bf 463
d62a17ae 464 /* Hash table of Import RTs to EVIs */
465 struct hash *import_rt_hash;
14c1a7bf 466
10ebe1ab
MK		 467 /* Hash table of VRF import RTs to VRFs */
468 struct hash *vrf_import_rt_hash;
469
fe1dc5a3
MK		 470 /* L3-VNI corresponding to this vrf */
471 vni_t l3vni;
472
473 /* router-mac to be used in mac-ip routes for this vrf */
474 struct ethaddr rmac;
475
b67a60d2 476 /* originator ip - to be used as NH for type-5 routes */
477 struct in_addr originator_ip;
478
fe1dc5a3
MK		 479 /* vrf flags */
480 uint32_t vrf_flags;
676f83b9 481#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 482#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
483#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
484#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK		 485#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
486
676f83b9 487
488 /* unique ID for auto derivation of RD for this vrf */
489 uint16_t vrf_rd_id;
490
92708db6 491 /* Automatically derived RD for this VRF */
492 struct prefix_rd vrf_prd_auto;
493
676f83b9 494 /* RD for this VRF */
495 struct prefix_rd vrf_prd;
c581d8b0
MK		 496
497 /* import rt list for the vrf instance */
498 struct list *vrf_import_rtl;
499
500 /* export rt list for the vrf instance */
501 struct list *vrf_export_rtl;
fe1dc5a3 502
6a8657d0
MK		 503 /* list of corresponding l2vnis (struct bgpevpn) */
504 struct list *l2vnis;
505
53c84f78
MK		 506 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
507 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
508
e70e9f8e 509 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 510
d62a17ae 511 QOBJ_FIELDS
718e3744 512};
19df7279 513DECLARE_QOBJ_TYPE(bgp)
718e3744 514
2a3d5731 515#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 516
d62a17ae 517#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
518 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
519 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
520 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 521
718e3744 522/* BGP peer-group support. */
d62a17ae 523struct peer_group {
524 /* Name of the peer-group. */
525 char *name;
718e3744 526
d62a17ae 527 /* Pointer to BGP. */
528 struct bgp *bgp;
718e3744 529
d62a17ae 530 /* Peer-group client list. */
531 struct list *peer;
f14e6fdb 532
d62a17ae 533 /** Dynamic neighbor listening ranges */
534 struct list *listen_range[AFI_MAX];
535
536 /* Peer-group config */
537 struct peer *conf;
718e3744 538};
539
540/* BGP Notify message format. */
d62a17ae 541struct bgp_notify {
d7c0a89a
QY		 542 uint8_t code;
543 uint8_t subcode;
d62a17ae 544 char *data;
545 bgp_size_t length;
d7c0a89a 546 uint8_t *raw_data;
718e3744 547};
548
549/* Next hop self address. */
d62a17ae 550struct bgp_nexthop {
551 struct interface *ifp;
552 struct in_addr v4;
553 struct in6_addr v6_global;
554 struct in6_addr v6_local;
718e3744 555};
556
a82478b9
DS		 557/* BGP addpath values */
558#define BGP_ADDPATH_RX 1
559#define BGP_ADDPATH_TX 2
560#define BGP_ADDPATH_ID_LEN 4
561
adbac85e
DW		 562#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
563
718e3744 564/* BGP router distinguisher value. */
565#define BGP_RD_SIZE 8
566
d62a17ae 567struct bgp_rd {
d7c0a89a 568 uint8_t val[BGP_RD_SIZE];
718e3744 569};
570
2a3d5731
DW		 571#define RMAP_IN 0
572#define RMAP_OUT 1
573#define RMAP_MAX 2
fee0f4c6 574
65efcfce
LB		 575#include "filter.h"
576
718e3744 577/* BGP filter structure. */
d62a17ae 578struct bgp_filter {
579 /* Distribute-list. */
580 struct {
581 char *name;
582 struct access_list *alist;
583 } dlist[FILTER_MAX];
584
585 /* Prefix-list. */
586 struct {
587 char *name;
588 struct prefix_list *plist;
589 } plist[FILTER_MAX];
590
591 /* Filter-list. */
592 struct {
593 char *name;
594 struct as_list *aslist;
595 } aslist[FILTER_MAX];
596
597 /* Route-map. */
598 struct {
599 char *name;
600 struct route_map *map;
601 } map[RMAP_MAX];
602
603 /* Unsuppress-map. */
604 struct {
605 char *name;
606 struct route_map *map;
607 } usmap;
718e3744 608};
609
6d85b15b
JBD		 610/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
611 a peer who's AS is part of our Confederation. */
d62a17ae 612typedef enum {
613 BGP_PEER_IBGP = 1,
614 BGP_PEER_EBGP,
615 BGP_PEER_INTERNAL,
616 BGP_PEER_CONFED,
6d85b15b
JBD		 617} bgp_peer_sort_t;
618
d6661008
DS		 619/* BGP message header and packet size. */
620#define BGP_MARKER_SIZE 16
621#define BGP_HEADER_SIZE 19
622#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 623#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 624
3f9c7369
DS		 625/*
626 * Trigger delay for bgp_announce_route().
627 */
628#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
629#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
630
d62a17ae 631struct peer_af {
632 /* back pointer to the peer */
633 struct peer *peer;
3f9c7369 634
d62a17ae 635 /* which subgroup the peer_af belongs to */
636 struct update_subgroup *subgroup;
3f9c7369 637
d62a17ae 638 /* for being part of an update subgroup's peer list */
639 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 640
d62a17ae 641 /* for being part of a packet's peer list */
642 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 643
d62a17ae 644 struct bpacket *next_pkt_to_send;
3f9c7369 645
d62a17ae 646 /*
647 * Trigger timer for bgp_announce_route().
648 */
649 struct thread *t_announce_route;
3f9c7369 650
d62a17ae 651 afi_t afi;
652 safi_t safi;
653 int afid;
3f9c7369
DS		 654};
655
718e3744 656/* BGP neighbor structure. */
d62a17ae 657struct peer {
658 /* BGP structure. */
659 struct bgp *bgp;
660
661 /* reference count, primarily to allow bgp_process'ing of route_node's
662 * to be done after a struct peer is deleted.
663 *
664 * named 'lock' for hysterical reasons within Quagga.
665 */
666 int lock;
667
668 /* BGP peer group. */
669 struct peer_group *group;
670 uint64_t version[AFI_MAX][SAFI_MAX];
671
672 /* BGP peer_af structures, per configured AF on this peer */
673 struct peer_af *peer_af_array[BGP_AF_MAX];
674
675 /* Peer's remote AS number. */
676 int as_type;
677 as_t as;
678
679 /* Peer's local AS number. */
680 as_t local_as;
681
682 bgp_peer_sort_t sort;
683
684 /* Peer's Change local AS number. */
685 as_t change_local_as;
686
687 /* Remote router ID. */
688 struct in_addr remote_id;
689
690 /* Local router ID. */
691 struct in_addr local_id;
692
693 /* Packet receive and send buffer. */
424ab01d
QY		 694 pthread_mutex_t io_mtx; // guards ibuf, obuf
695 struct stream_fifo *ibuf; // packets waiting to be processed
696 struct stream_fifo *obuf; // packets waiting to be written
697
74ffbfe6
QY		 698 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
699 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 700
701 struct stream *curr; // the current packet being parsed
d62a17ae 702
703 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 704 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 705 * actual packet is then constructed by concatenating the two.
706 */
707 struct stream *scratch;
708
709 /* the doppelganger peer structure, due to dual TCP conn setup */
710 struct peer *doppelganger;
711
712 /* Status of the peer. */
713 int status;
714 int ostatus;
715
716 /* FSM events, stored for debug purposes.
717 * Note: uchar used for reduced memory usage.
718 */
719 unsigned char cur_event;
720 unsigned char last_event;
721 unsigned char last_major_event;
722
723 /* Peer index, used for dumping TABLE_DUMP_V2 format */
724 uint16_t table_dump_index;
725
726 /* Peer information */
727 int fd; /* File descriptor */
728 int ttl; /* TTL of TCP connection to the peer. */
729 int rtt; /* Estimated round-trip-time from TCP_INFO */
730 int gtsm_hops; /* minimum hopcount to peer */
731 char *desc; /* Description of the peer. */
732 unsigned short port; /* Destination port for peer */
733 char *host; /* Printable address of the peer. */
734 union sockunion su; /* Sockunion address of the peer. */
a80beece 735#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 736 time_t uptime; /* Last Up/Down time */
737 time_t readtime; /* Last read time */
738 time_t resettime; /* Last reset time */
739
d62a17ae 740 char *conf_if; /* neighbor interface config name. */
741 struct interface *ifp; /* corresponding interface */
742 char *ifname; /* bind interface name. */
743 char *update_if;
744 union sockunion *update_source;
745
746 union sockunion *su_local; /* Sockunion of local address. */
747 union sockunion *su_remote; /* Sockunion of remote address. */
748 int shared_network; /* Is this peer shared same network. */
749 struct bgp_nexthop nexthop; /* Nexthop */
750
751 /* Peer address family configuration. */
d7c0a89a
QY		 752 uint8_t afc[AFI_MAX][SAFI_MAX];
753 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
754 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
755 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 756
757 /* Capability flags (reset in bgp_stop) */
d7c0a89a 758 uint32_t cap;
718e3744 759#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
760#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
761#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
762#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
763#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 764#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
765#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 766#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
767#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 768#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
769#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 770#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
771#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 772#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
773#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 774#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
775#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 776
d62a17ae 777 /* Capability flags (reset in bgp_stop) */
d7c0a89a 778 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 779#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
780#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
781#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
782#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
783#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
784#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 785#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
786#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 787#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
788#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
789#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
790#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 791#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
792#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
793#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 794
d62a17ae 795 /* Global configuration flags. */
d7c0a89a 796 uint32_t flags;
718e3744 797#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
798#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
799#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
800#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
801#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 802#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 803#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 804#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 805#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 806#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
807#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 808#define PEER_FLAG_LONESOUL (1 << 11)
809#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
810#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 811#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
65efcfce 812#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
02a82b47 813
d62a17ae 814 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
815 char *tx_shutdown_message;
718e3744 816
d62a17ae 817 /* NSF mode (graceful restart) */
d7c0a89a 818 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 819
d62a17ae 820 /* Per AF configuration flags. */
d7c0a89a 821 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 822#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
823#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
824#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
825#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
826#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
827#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
828#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
829#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
830#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
831#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
832#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
833#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
834#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
835#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
836#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
837#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 838#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 839#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 840#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
841#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 842#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 843#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 844#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 845#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
d93f7ffc 846#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 847#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 848#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 849
d62a17ae 850 /* MD5 password */
851 char *password;
718e3744 852
d62a17ae 853 /* default-originate route-map. */
854 struct {
855 char *name;
856 struct route_map *map;
857 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 858
d62a17ae 859 /* Peer status flags. */
d7c0a89a 860 uint16_t sflags;
718e3744 861#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
862#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
863#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
864#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
865#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 866#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
867#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 868
d62a17ae 869 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 870 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 871#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
872#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 873#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
874#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
875#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
876#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 877
d62a17ae 878 /* Default attribute value for the peer. */
d7c0a89a 879 uint32_t config;
d93f7ffc
DW		 880#define PEER_CONFIG_TIMER (1 << 0) /* keepalive & holdtime */
881#define PEER_CONFIG_CONNECT (1 << 1) /* connect */
882#define PEER_CONFIG_ROUTEADV (1 << 2) /* route advertise */
d25e4efc
DS		 883#define PEER_GROUP_CONFIG_TIMER (1 << 3) /* timers from peer-group */
884
a4d82a8a
PZ		 885#define PEER_OR_GROUP_TIMER_SET(peer) \
886 (CHECK_FLAG(peer->config, PEER_CONFIG_TIMER) \
d25e4efc 887 || CHECK_FLAG(peer->config, PEER_GROUP_CONFIG_TIMER))
8ffedcea 888
1588f6f4
QY		 889 _Atomic uint32_t holdtime;
890 _Atomic uint32_t keepalive;
891 _Atomic uint32_t connect;
892 _Atomic uint32_t routeadv;
d62a17ae 893
894 /* Timer values. */
1588f6f4
QY		 895 _Atomic uint32_t v_start;
896 _Atomic uint32_t v_connect;
897 _Atomic uint32_t v_holdtime;
898 _Atomic uint32_t v_keepalive;
899 _Atomic uint32_t v_routeadv;
900 _Atomic uint32_t v_pmax_restart;
901 _Atomic uint32_t v_gr_restart;
d62a17ae 902
903 /* Threads. */
904 struct thread *t_read;
424ab01d 905 struct thread *t_write;
d62a17ae 906 struct thread *t_start;
387f984e
QY		 907 struct thread *t_connect_check_r;
908 struct thread *t_connect_check_w;
d62a17ae 909 struct thread *t_connect;
910 struct thread *t_holdtime;
d62a17ae 911 struct thread *t_routeadv;
912 struct thread *t_pmax_restart;
913 struct thread *t_gr_restart;
914 struct thread *t_gr_stale;
56257a44 915 struct thread *t_generate_updgrp_packets;
424ab01d 916 struct thread *t_process_packet;
d62a17ae 917
49507a6f 918 /* Thread flags. */
1588f6f4 919 _Atomic uint16_t thread_flags;
b750b0ba
QY		 920#define PEER_THREAD_WRITES_ON (1 << 0)
921#define PEER_THREAD_READS_ON (1 << 1)
922#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 923 /* workqueues */
924 struct work_queue *clear_node_queue;
925
a4d82a8a
PZ		 926#define PEER_TOTAL_RX(peer) \
927 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
928 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
929 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
930 + atomic_load_explicit(&peer->refresh_in, \
931 memory_order_relaxed) \
932 + atomic_load_explicit(&peer->keepalive_in, \
933 memory_order_relaxed) \
934 + atomic_load_explicit(&peer->dynamic_cap_in, \
935 memory_order_relaxed)
936
937#define PEER_TOTAL_TX(peer) \
938 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
939 + atomic_load_explicit(&peer->update_out, \
940 memory_order_relaxed) \
941 + atomic_load_explicit(&peer->notify_out, \
942 memory_order_relaxed) \
943 + atomic_load_explicit(&peer->refresh_out, \
944 memory_order_relaxed) \
945 + atomic_load_explicit(&peer->keepalive_out, \
946 memory_order_relaxed) \
947 + atomic_load_explicit(&peer->dynamic_cap_out, \
948 memory_order_relaxed)
0112e9e0 949
d62a17ae 950 /* Statistics field */
996c9314
LB		 951 _Atomic uint32_t open_in; /* Open message input count */
952 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 953 _Atomic uint32_t update_in; /* Update message input count */
954 _Atomic uint32_t update_out; /* Update message ouput count */
955 _Atomic time_t update_time; /* Update message received time. */
956 _Atomic uint32_t keepalive_in; /* Keepalive input count */
957 _Atomic uint32_t keepalive_out; /* Keepalive output count */
958 _Atomic uint32_t notify_in; /* Notify input count */
959 _Atomic uint32_t notify_out; /* Notify output count */
960 _Atomic uint32_t refresh_in; /* Route Refresh input count */
961 _Atomic uint32_t refresh_out; /* Route Refresh output count */
962 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 963 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 964
965 /* BGP state count */
d7c0a89a
QY		 966 uint32_t established; /* Established */
967 uint32_t dropped; /* Dropped */
d62a17ae 968
969 /* Update delay related fields */
d7c0a89a 970 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 971 for EOR */
972
973 /* Syncronization list and time. */
974 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
975 time_t synctime;
1588f6f4
QY		 976 /* timestamp when the last UPDATE msg was written */
977 _Atomic time_t last_write;
978 /* timestamp when the last msg was written */
979 _Atomic time_t last_update;
d62a17ae 980
981 /* Send prefix count. */
982 unsigned long scount[AFI_MAX][SAFI_MAX];
983
d62a17ae 984 /* Notify data. */
985 struct bgp_notify notify;
986
d62a17ae 987 /* Filter structure. */
988 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
989
990 /* ORF Prefix-list */
991 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
992
993 /* Text description of last attribute rcvd */
994 char rcvd_attr_str[BUFSIZ];
995
996 /* Track if we printed the attribute in debugs */
997 int rcvd_attr_printed;
998
999 /* Prefix count. */
1000 unsigned long pcount[AFI_MAX][SAFI_MAX];
1001
1002 /* Max prefix count. */
1003 unsigned long pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY		 1004 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1005 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1006#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1007
d62a17ae 1008 /* allowas-in. */
1009 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1010
d62a17ae 1011 /* weight */
1012 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1013
d62a17ae 1014 /* peer reset cause */
1015 char last_reset;
e0701b79 1016#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1017#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1018#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1019#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1020#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1021#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1022#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1023#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1024#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1025#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1026#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1027#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1028#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1029#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1030#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1031#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1032#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1033#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1034#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1035#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1036#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1037#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1038#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1039#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 1040#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1041#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 1042 unsigned long last_reset_cause_size;
d7c0a89a 1043 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1044
d62a17ae 1045 /* The kind of route-map Flags.*/
d7c0a89a 1046 uint8_t rmap_type;
ac41b2a2 1047#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1048#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1049#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1050#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1051#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1052#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1053#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1054#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1055
d62a17ae 1056 /* peer specific BFD information */
1057 struct bfd_info *bfd_info;
04b6bdc0 1058
d62a17ae 1059 /* hostname and domainname advertised by host */
1060 char *hostname;
1061 char *domainname;
19df7279 1062
d62a17ae 1063 QOBJ_FIELDS
718e3744 1064};
19df7279 1065DECLARE_QOBJ_TYPE(peer)
718e3744 1066
ad4cbda1 1067/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1068#define BGP_PEER_START_SUPPRESSED(P) \
1069 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1070 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1071
0df7c91f
PJ		 1072#define PEER_PASSWORD_MINLEN (1)
1073#define PEER_PASSWORD_MAXLEN (80)
1074
718e3744 1075/* This structure's member directly points incoming packet data
1076 stream. */
d62a17ae 1077struct bgp_nlri {
1078 /* AFI. */
a46a2e9b 1079 uint16_t afi; /* iana_afi_t */
718e3744 1080
d62a17ae 1081 /* SAFI. */
a46a2e9b 1082 uint8_t safi; /* iana_safi_t */
718e3744 1083
d62a17ae 1084 /* Pointer to NLRI byte stream. */
d7c0a89a 1085 uint8_t *nlri;
718e3744 1086
d62a17ae 1087 /* Length of whole NLRI. */
1088 bgp_size_t length;
718e3744 1089};
1090
1091/* BGP versions. */
1092#define BGP_VERSION_4 4
718e3744 1093
1094/* Default BGP port number. */
1095#define BGP_PORT_DEFAULT 179
1096
718e3744 1097/* BGP minimum message size. */
1098#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1099#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1100#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1101#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1102#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1103#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1104
1105/* BGP message types. */
1106#define BGP_MSG_OPEN 1
1107#define BGP_MSG_UPDATE 2
1108#define BGP_MSG_NOTIFY 3
1109#define BGP_MSG_KEEPALIVE 4
1110#define BGP_MSG_ROUTE_REFRESH_NEW 5
1111#define BGP_MSG_CAPABILITY 6
1112#define BGP_MSG_ROUTE_REFRESH_OLD 128
1113
1114/* BGP open optional parameter. */
1115#define BGP_OPEN_OPT_AUTH 1
1116#define BGP_OPEN_OPT_CAP 2
1117
1118/* BGP4 attribute type codes. */
1119#define BGP_ATTR_ORIGIN 1
1120#define BGP_ATTR_AS_PATH 2
1121#define BGP_ATTR_NEXT_HOP 3
1122#define BGP_ATTR_MULTI_EXIT_DISC 4
1123#define BGP_ATTR_LOCAL_PREF 5
1124#define BGP_ATTR_ATOMIC_AGGREGATE 6
1125#define BGP_ATTR_AGGREGATOR 7
1126#define BGP_ATTR_COMMUNITIES 8
1127#define BGP_ATTR_ORIGINATOR_ID 9
1128#define BGP_ATTR_CLUSTER_LIST 10
1129#define BGP_ATTR_DPA 11
1130#define BGP_ATTR_ADVERTISER 12
1131#define BGP_ATTR_RCID_PATH 13
1132#define BGP_ATTR_MP_REACH_NLRI 14
1133#define BGP_ATTR_MP_UNREACH_NLRI 15
1134#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1135#define BGP_ATTR_AS4_PATH 17
1136#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1137#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1138#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1139#define BGP_ATTR_ENCAP 23
57d187bc 1140#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1141#define BGP_ATTR_PREFIX_SID 40
65efcfce
LB		 1142#if ENABLE_BGP_VNC
1143#define BGP_ATTR_VNC 255
1144#endif
718e3744 1145
1146/* BGP update origin. */
1147#define BGP_ORIGIN_IGP 0
1148#define BGP_ORIGIN_EGP 1
1149#define BGP_ORIGIN_INCOMPLETE 2
1150
1151/* BGP notify message codes. */
1152#define BGP_NOTIFY_HEADER_ERR 1
1153#define BGP_NOTIFY_OPEN_ERR 2
1154#define BGP_NOTIFY_UPDATE_ERR 3
1155#define BGP_NOTIFY_HOLD_ERR 4
1156#define BGP_NOTIFY_FSM_ERR 5
1157#define BGP_NOTIFY_CEASE 6
1158#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1159
4b4e07d2
DT		 1160#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1161
718e3744 1162/* BGP_NOTIFY_HEADER_ERR sub codes. */
1163#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1164#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1165#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1166
1167/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1168#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1169#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1170#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1171#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1172#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1173#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1174#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1175#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1176
1177/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1178#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1179#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1180#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1181#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1182#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1183#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1184#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1185#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1186#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1187#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1188#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1189
4b4e07d2 1190/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1191#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1192#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1193#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1194#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1195#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1196#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1197#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1198#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1199
1200/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1201#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1202#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1203#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1204
1205/* BGP finite state machine status. */
1206#define Idle 1
1207#define Connect 2
1208#define Active 3
1209#define OpenSent 4
1210#define OpenConfirm 5
1211#define Established 6
ca058a30
PJ		 1212#define Clearing 7
1213#define Deleted 8
1214#define BGP_STATUS_MAX 9
718e3744 1215
1216/* BGP finite state machine events. */
1217#define BGP_Start 1
1218#define BGP_Stop 2
1219#define TCP_connection_open 3
1220#define TCP_connection_closed 4
1221#define TCP_connection_open_failed 5
1222#define TCP_fatal_error 6
1223#define ConnectRetry_timer_expired 7
1224#define Hold_Timer_expired 8
1225#define KeepAlive_timer_expired 9
1226#define Receive_OPEN_message 10
1227#define Receive_KEEPALIVE_message 11
1228#define Receive_UPDATE_message 12
1229#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1230#define Clearing_Completed 14
1231#define BGP_EVENTS_MAX 15
718e3744 1232
1233/* BGP timers default value. */
8efe88ea 1234/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1235#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1236#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1237#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1238#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1239#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1240#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1241
1242/* BGP default local preference. */
1243#define BGP_DEFAULT_LOCAL_PREF 100
1244
7f323236
DW		 1245/* BGP local-preference to send when 'bgp graceful-shutdown'
1246 * is configured */
1247#define BGP_GSHUT_LOCAL_PREF 0
1248
3f9c7369
DS		 1249/* BGP default subgroup packet queue max . */
1250#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1251
538621f2 1252/* BGP graceful restart */
1253#define BGP_DEFAULT_RESTART_TIME 120
1254#define BGP_DEFAULT_STALEPATH_TIME 360
1255
718e3744 1256/* BGP uptime string length. */
1257#define BGP_UPTIME_LEN 25
1258
1259/* Default configuration settings for bgpd. */
1260#define BGP_VTY_PORT 2605
718e3744 1261#define BGP_DEFAULT_CONFIG "bgpd.conf"
1262
1263/* Check AS path loop when we send NLRI. */
1264/* #define BGP_SEND_ASPATH_CHECK */
1265
f14e6fdb
DS		 1266/* BGP Dynamic Neighbors feature */
1267#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1268#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1269#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1270
718e3744 1271/* Flag for peer_clear_soft(). */
d62a17ae 1272enum bgp_clear_type {
1273 BGP_CLEAR_SOFT_NONE,
1274 BGP_CLEAR_SOFT_OUT,
1275 BGP_CLEAR_SOFT_IN,
1276 BGP_CLEAR_SOFT_BOTH,
1277 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1278};
1279
1280/* Macros. */
424ab01d 1281#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1282#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1283#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1284 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1285
718e3744 1286/* BGP error codes. */
1287#define BGP_SUCCESS 0
1288#define BGP_ERR_INVALID_VALUE -1
1289#define BGP_ERR_INVALID_FLAG -2
1290#define BGP_ERR_INVALID_AS -3
1291#define BGP_ERR_INVALID_BGP -4
1292#define BGP_ERR_PEER_GROUP_MEMBER -5
1293#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1294#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1295#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1296#define BGP_ERR_PEER_GROUP_MISMATCH -9
1297#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1298#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1299#define BGP_ERR_AS_MISMATCH -12
1300#define BGP_ERR_PEER_FLAG_CONFLICT -13
1301#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1302#define BGP_ERR_PEER_FILTER_CONFLICT -15
1303#define BGP_ERR_NOT_INTERNAL_PEER -16
1304#define BGP_ERR_REMOVE_PRIVATE_AS -17
1305#define BGP_ERR_AF_UNCONFIGURED -18
1306#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1307#define BGP_ERR_INSTANCE_MISMATCH -20
1308#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1309#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1310#define BGP_ERR_TCPSIG_FAILED -23
1311#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1312#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1313#define BGP_ERR_NO_INTERFACE_CONFIG -26
1314#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1315#define BGP_ERR_AS_OVERRIDE -28
1316#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1317#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1318#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1319#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1320#define BGP_ERR_MAX -33
63fa10b5 1321#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1322#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1323
3f9c7369
DS		 1324/*
1325 * Enumeration of different policy kinds a peer can be configured with.
1326 */
d62a17ae 1327typedef enum {
1328 BGP_POLICY_ROUTE_MAP,
1329 BGP_POLICY_FILTER_LIST,
1330 BGP_POLICY_PREFIX_LIST,
1331 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1332} bgp_policy_type_e;
1333
718e3744 1334extern struct bgp_master *bm;
37fe7731 1335extern unsigned int multipath_num;
718e3744 1336
718e3744 1337/* Prototypes. */
d62a17ae 1338extern void bgp_terminate(void);
1339extern void bgp_reset(void);
1340extern time_t bgp_clock(void);
1341extern void bgp_zclient_reset(void);
1342extern int bgp_nexthop_set(union sockunion *, union sockunion *,
1343 struct bgp_nexthop *, struct peer *);
1344extern struct bgp *bgp_get_default(void);
1345extern struct bgp *bgp_lookup(as_t, const char *);
1346extern struct bgp *bgp_lookup_by_name(const char *);
1347extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1348extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1349extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1350extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1351extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1352extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1353extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1354extern struct peer_group *peer_group_get(struct bgp *, const char *);
1355extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1356 union sockunion *,
1357 struct peer_group *);
1358extern struct prefix *
1359peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1360extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1361 struct prefix *,
1362 struct prefix **);
1363extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1364 union sockunion *);
1365extern void peer_drop_dynamic_neighbor(struct peer *);
28066f4b
DS		 1366
1367/*
1368 * Peers are incredibly easy to memory leak
1369 * due to the various ways that they are actually used
1370 * Provide some functionality to debug locks and unlocks
1371 */
1372extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1373extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1374#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1375#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1376
d62a17ae 1377extern bgp_peer_sort_t peer_sort(struct peer *peer);
1378extern int peer_active(struct peer *);
1379extern int peer_active_nego(struct peer *);
1380extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1381extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1382 as_t, as_t, int, afi_t, safi_t,
1383 struct peer_group *);
1384extern struct peer *peer_create_accept(struct bgp *);
1385extern void peer_xfer_config(struct peer *dst, struct peer *src);
d7c0a89a 1386extern char *peer_uptime(time_t, char *, size_t, uint8_t, json_object *);
856ca177 1387
d62a17ae 1388extern int bgp_config_write(struct vty *);
6b0655a2 1389
d62a17ae 1390extern void bgp_master_init(struct thread_master *master);
718e3744 1391
d62a17ae 1392extern void bgp_init(void);
419dfe6a 1393extern void bgp_pthreads_run(void);
2d4ee774 1394extern void bgp_pthreads_finish(void);
d62a17ae 1395extern void bgp_route_map_init(void);
1396extern void bgp_session_reset(struct peer *);
718e3744 1397
d62a17ae 1398extern int bgp_option_set(int);
1399extern int bgp_option_unset(int);
1400extern int bgp_option_check(int);
718e3744 1401
d62a17ae 1402extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1403extern void bgp_instance_up(struct bgp *);
1404extern void bgp_instance_down(struct bgp *);
1405extern int bgp_delete(struct bgp *);
718e3744 1406
e5619c28
PG		 1407extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1408 vrf_id_t old_vrf_id, bool create);
1409
d62a17ae 1410extern int bgp_flag_set(struct bgp *, int);
1411extern int bgp_flag_unset(struct bgp *, int);
1412extern int bgp_flag_check(struct bgp *, int);
718e3744 1413
d62a17ae 1414extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1415extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1416
d62a17ae 1417extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1418extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1419
d62a17ae 1420extern int bgp_confederation_id_set(struct bgp *, as_t);
1421extern int bgp_confederation_id_unset(struct bgp *);
1422extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1423
d62a17ae 1424extern int bgp_confederation_peers_add(struct bgp *, as_t);
1425extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1426
d7c0a89a 1427extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime);
d62a17ae 1428extern int bgp_timers_unset(struct bgp *);
718e3744 1429
d7c0a89a 1430extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1431extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1432
d7c0a89a 1433extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1434extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1435
d62a17ae 1436extern int bgp_listen_limit_set(struct bgp *, int);
1437extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1438
d62a17ae 1439extern int bgp_update_delay_active(struct bgp *);
1440extern int bgp_update_delay_configured(struct bgp *);
318cac96 1441extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1442extern void peer_as_change(struct peer *, as_t, int);
1443extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1444 int, afi_t, safi_t);
1445extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1446extern int peer_delete(struct peer *peer);
1447extern int peer_group_delete(struct peer_group *);
1448extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1449extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1450
d62a17ae 1451extern int peer_activate(struct peer *, afi_t, safi_t);
1452extern int peer_deactivate(struct peer *, afi_t, safi_t);
1453extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1454
d62a17ae 1455extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1456 struct peer_group *, as_t *);
1457extern int peer_group_unbind(struct bgp *, struct peer *, struct peer_group *);
718e3744 1458
d7c0a89a
QY		 1459extern int peer_flag_set(struct peer *, uint32_t);
1460extern int peer_flag_unset(struct peer *, uint32_t);
718e3744 1461
d7c0a89a
QY		 1462extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1463extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1464extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
718e3744 1465
d62a17ae 1466extern int peer_ebgp_multihop_set(struct peer *, int);
1467extern int peer_ebgp_multihop_unset(struct peer *);
1468extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1469
d62a17ae 1470extern int peer_description_set(struct peer *, const char *);
1471extern int peer_description_unset(struct peer *);
718e3744 1472
d62a17ae 1473extern int peer_update_source_if_set(struct peer *, const char *);
1474extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1475extern int peer_update_source_unset(struct peer *);
718e3744 1476
d62a17ae 1477extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1478 const char *);
1479extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1480
d7c0a89a 1481extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1482extern int peer_port_unset(struct peer *);
718e3744 1483
d7c0a89a 1484extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1485extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1486
d7c0a89a
QY		 1487extern int peer_timers_set(struct peer *, uint32_t keepalive,
1488 uint32_t holdtime);
d62a17ae 1489extern int peer_timers_unset(struct peer *);
718e3744 1490
d7c0a89a 1491extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1492extern int peer_timers_connect_unset(struct peer *);
718e3744 1493
d7c0a89a 1494extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1495extern int peer_advertise_interval_unset(struct peer *);
718e3744 1496
d62a17ae 1497extern void peer_interface_set(struct peer *, const char *);
1498extern void peer_interface_unset(struct peer *);
718e3744 1499
d62a17ae 1500extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1501extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1502
d62a17ae 1503extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1504extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1505
d62a17ae 1506extern int peer_local_as_set(struct peer *, as_t, int, int);
1507extern int peer_local_as_unset(struct peer *);
718e3744 1508
d62a17ae 1509extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1510 const char *);
1511extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1512
d62a17ae 1513extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1514extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1515
d62a17ae 1516extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1517extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1518
d62a17ae 1519extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
0df7c91f 1520
d62a17ae 1521extern int peer_password_set(struct peer *, const char *);
1522extern int peer_password_unset(struct peer *);
0df7c91f 1523
d62a17ae 1524extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1525
d7c0a89a
QY		 1526extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1527 uint8_t, int, uint16_t);
d62a17ae 1528extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1529
d62a17ae 1530extern int peer_clear(struct peer *, struct listnode **);
1531extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1532
d62a17ae 1533extern int peer_ttl_security_hops_set(struct peer *, int);
1534extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1535
d62a17ae 1536extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1537extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1538
d62a17ae 1539extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1540extern void bgp_route_map_terminate(void);
16286195 1541
d62a17ae 1542extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1543
5c525538 1544extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1545 afi_t *afi, safi_t *safi);
1546extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1547 iana_afi_t *pkt_afi,
1548 iana_safi_t *pkt_safi);
9cabb64b 1549
d62a17ae 1550extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1551extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1552extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1553
ffd0c037 1554extern void bgp_close(void);
92375c91
JB		 1555extern void bgp_free(struct bgp *);
1556
1557static inline struct bgp *bgp_lock(struct bgp *bgp)
1558{
1559 bgp->lock++;
1560 return bgp;
1561}
1562
1563static inline void bgp_unlock(struct bgp *bgp)
1564{
1565 assert(bgp->lock > 0);
1566 if (--bgp->lock == 0)
1567 bgp_free(bgp);
1568}
ffd0c037 1569
d62a17ae 1570static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1571{
d62a17ae 1572 switch (afi) {
1573 case AFI_IP:
1574 switch (safi) {
1575 case SAFI_UNICAST:
1576 return BGP_AF_IPV4_UNICAST;
1577 break;
1578 case SAFI_MULTICAST:
1579 return BGP_AF_IPV4_MULTICAST;
1580 break;
1581 case SAFI_LABELED_UNICAST:
1582 return BGP_AF_IPV4_LBL_UNICAST;
1583 break;
1584 case SAFI_MPLS_VPN:
1585 return BGP_AF_IPV4_VPN;
1586 break;
1587 case SAFI_ENCAP:
1588 return BGP_AF_IPV4_ENCAP;
1589 break;
7c40bf39 1590 case SAFI_FLOWSPEC:
1591 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1592 default:
1593 return BGP_AF_MAX;
1594 break;
1595 }
1596 break;
1597 case AFI_IP6:
1598 switch (safi) {
1599 case SAFI_UNICAST:
1600 return BGP_AF_IPV6_UNICAST;
1601 break;
1602 case SAFI_MULTICAST:
1603 return BGP_AF_IPV6_MULTICAST;
1604 break;
1605 case SAFI_LABELED_UNICAST:
1606 return BGP_AF_IPV6_LBL_UNICAST;
1607 break;
1608 case SAFI_MPLS_VPN:
1609 return BGP_AF_IPV6_VPN;
1610 break;
1611 case SAFI_ENCAP:
1612 return BGP_AF_IPV6_ENCAP;
1613 break;
7c40bf39 1614 case SAFI_FLOWSPEC:
1615 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1616 default:
1617 return BGP_AF_MAX;
1618 break;
1619 }
1620 break;
1621 case AFI_L2VPN:
1622 switch (safi) {
1623 case SAFI_EVPN:
1624 return BGP_AF_L2VPN_EVPN;
1625 break;
1626 default:
1627 return BGP_AF_MAX;
1628 break;
1629 }
3f9c7369 1630 default:
d62a17ae 1631 return BGP_AF_MAX;
1632 break;
3f9c7369 1633 }
3f9c7369
DS		 1634}
1635
c8560b44 1636/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1637static inline int peer_group_active(struct peer *peer)
3f9c7369 1638{
d62a17ae 1639 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1640 return 1;
1641 return 0;
3f9c7369
DS		 1642}
1643
1644/* If peer is negotiated at least one address family return 1. */
d62a17ae 1645static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1646{
d62a17ae 1647 if (peer->afc_nego[afi][SAFI_UNICAST]
1648 || peer->afc_nego[afi][SAFI_MULTICAST]
1649 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1650 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1651 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1652 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1653 || peer->afc_nego[afi][SAFI_EVPN])
1654 return 1;
1655 return 0;
3f9c7369
DS		 1656}
1657
f14e6fdb 1658/* If at least one address family activated for group, return 1. */
d62a17ae 1659static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1660{
d62a17ae 1661 struct peer *peer = group->conf;
1662
1663 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1664 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 1665 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 1666 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1667 || peer->afc[AFI_IP6][SAFI_UNICAST]
1668 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1669 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1670 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1671 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 1672 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 1673 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1674 return 1;
1675 return 0;
f14e6fdb
DS		 1676}
1677
d62a17ae 1678static inline char *timestamp_string(time_t ts)
3f9c7369 1679{
d62a17ae 1680 time_t tbuf;
1681 tbuf = time(NULL) - (bgp_clock() - ts);
1682 return ctime(&tbuf);
3f9c7369
DS		 1683}
1684
d62a17ae 1685static inline int peer_established(struct peer *peer)
3f9c7369 1686{
d62a17ae 1687 if (peer->status == Established)
1688 return 1;
1689 return 0;
3f9c7369
DS		 1690}
1691
d62a17ae 1692static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1693{
d62a17ae 1694 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1695}
1696
d62a17ae 1697static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1698{
d62a17ae 1699 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1700}
1701
d1be1f08 1702/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1703static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1704{
d62a17ae 1705 struct vrf *vrf;
d1be1f08 1706
d62a17ae 1707 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1708 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1709 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1710 vrf = vrf_lookup_by_name(bgp->name);
1711 else
1712 vrf = NULL;
d1be1f08 1713
d62a17ae 1714 return vrf;
d1be1f08 1715}
1716
1717/* Link BGP instance to VRF. */
d62a17ae 1718static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1719{
d62a17ae 1720 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1721 if (vrf->info != (void *)bgp)
1722 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1723}
1724
1725/* Unlink BGP instance from VRF. */
d62a17ae 1726static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1727{
d62a17ae 1728 if (vrf->info == (void *)bgp) {
1729 vrf->info = NULL;
1730 bgp_unlock(bgp);
1731 }
1732 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1733}
1734
d62a17ae 1735extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1736
1737/* For benefit of rfapi */
d62a17ae 1738extern struct peer *peer_new(struct bgp *bgp);
65efcfce 1739
00d252cb 1740#endif /* _QUAGGA_BGPD_H */
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