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