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