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718e3744 1/* BGP message definition header.
896014f4
DL		 2 * Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
718e3744 20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
19df7279 24#include "qobj.h"
d3ecc69e
QY		 25#include <pthread.h>
26
1ac267a2 27#include "frr_pthread.h"
856ca177 28#include "lib/json.h"
6aeb9e78 29#include "vrf.h"
94c60424 30#include "vty.h"
6aeb9e78 31
718e3744 32/* For union sockunion. */
3f9c7369 33#include "queue.h"
718e3744 34#include "sockunion.h"
518f0eb1 35#include "routemap.h"
ffd0c037 36#include "linklist.h"
8efe88ea 37#include "defaults.h"
4a1ab8e4 38#include "bgp_memory.h"
14c1a7bf 39#include "bitfield.h"
fe1dc5a3 40#include "vxlan.h"
955bfd98 41#include "bgp_labelpool.h"
dcc68b5e 42#include "bgp_addpath_types.h"
718e3744 43
04b6bdc0 44#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 45#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 46
5c81b96a 47/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
48#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
49
3f9c7369
DS		 50struct update_subgroup;
51struct bpacket;
4762c213 52struct bgp_pbr_config;
3f9c7369 53
0299c004
DS		 54/*
55 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 56 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
57 * behavior
0299c004
DS		 58 * in the system.
59 */
d62a17ae 60enum { AS_UNSPECIFIED = 0,
61 AS_SPECIFIED,
62 AS_INTERNAL,
63 AS_EXTERNAL,
0299c004
DS		 64};
65
718e3744 66/* Typedef BGP specific types. */
d7c0a89a
QY		 67typedef uint32_t as_t;
68typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
69typedef uint16_t bgp_size_t;
718e3744 70
d62a17ae 71#define max(a, b) \
72 ({ \
73 __typeof__(a) _a = (a); \
74 __typeof__(b) _b = (b); \
75 _a > _b ? _a : _b; \
76 })
77
78enum bgp_af_index {
79 BGP_AF_START,
80 BGP_AF_IPV4_UNICAST = BGP_AF_START,
81 BGP_AF_IPV4_MULTICAST,
82 BGP_AF_IPV4_VPN,
83 BGP_AF_IPV6_UNICAST,
84 BGP_AF_IPV6_MULTICAST,
85 BGP_AF_IPV6_VPN,
86 BGP_AF_IPV4_ENCAP,
87 BGP_AF_IPV6_ENCAP,
88 BGP_AF_L2VPN_EVPN,
89 BGP_AF_IPV4_LBL_UNICAST,
90 BGP_AF_IPV6_LBL_UNICAST,
7c40bf39 91 BGP_AF_IPV4_FLOWSPEC,
92 BGP_AF_IPV6_FLOWSPEC,
d62a17ae 93 BGP_AF_MAX
3f9c7369
DS		 94};
95
d62a17ae 96#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 97
d62a17ae 98#define FOREACH_AFI_SAFI(afi, safi) \
99 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
100 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 101
d1927ebe
AS		 102#define FOREACH_SAFI(safi) \
103 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 104
1ac267a2
DL		 105extern struct frr_pthread *bgp_pth_io;
106extern struct frr_pthread *bgp_pth_ka;
107
718e3744 108/* BGP master for system wide configurations and variables. */
d62a17ae 109struct bgp_master {
110 /* BGP instance list. */
111 struct list *bgp;
112
113 /* BGP thread master. */
114 struct thread_master *master;
718e3744 115
d62a17ae 116 /* work queues */
117 struct work_queue *process_main_queue;
87d4a781 118
d62a17ae 119 /* Listening sockets */
120 struct list *listen_sockets;
718e3744 121
d62a17ae 122 /* BGP port number. */
d7c0a89a 123 uint16_t port;
3a02d1f7 124
d62a17ae 125 /* Listener address */
126 char *address;
718e3744 127
48ecf8f5
DS		 128 /* The Mac table */
129 struct hash *self_mac_hash;
130
d62a17ae 131 /* BGP start time. */
132 time_t start_time;
133
134 /* Various BGP global configuration. */
d7c0a89a 135 uint8_t options;
718e3744 136#define BGP_OPT_NO_FIB (1 << 0)
137#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
138#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 139#define BGP_OPT_NO_LISTEN (1 << 3)
0b014ea6 140#define BGP_OPT_NO_ZEBRA (1 << 4)
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
97b4a0ec 159 bool terminating; /* global flag that sigint terminate seen */
d62a17ae 160 QOBJ_FIELDS
718e3744 161};
19df7279 162DECLARE_QOBJ_TYPE(bgp_master)
718e3744 163
73ac8160 164/* BGP route-map structure. */
d62a17ae 165struct bgp_rmap {
166 char *name;
167 struct route_map *map;
73ac8160
DS		 168};
169
d62a17ae 170struct bgp_redist {
d7c0a89a 171 unsigned short instance;
7c8ff89e 172
d62a17ae 173 /* BGP redistribute metric configuration. */
d7c0a89a
QY		 174 uint8_t redist_metric_flag;
175 uint32_t redist_metric;
7c8ff89e 176
d62a17ae 177 /* BGP redistribute route-map. */
178 struct bgp_rmap rmap;
7c8ff89e
DS		 179};
180
ddb5b488
PZ		 181typedef enum {
182 BGP_VPN_POLICY_DIR_FROMVPN = 0,
183 BGP_VPN_POLICY_DIR_TOVPN = 1,
184 BGP_VPN_POLICY_DIR_MAX = 2
185} vpn_policy_direction_t;
186
e70e9f8e
PZ		 187struct vpn_policy {
188 struct bgp *bgp; /* parent */
189 afi_t afi;
190 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
191 struct ecommunity *import_redirect_rtlist;
192 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
193 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
194
195 /* should be mpls_label_t? */
196 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
197 uint32_t tovpn_zebra_vrf_label_last_sent;
198 struct prefix_rd tovpn_rd;
199 struct prefix tovpn_nexthop; /* unset => set to 0 */
200 uint32_t flags;
201#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
202#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
203#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 204
1d4e8b0d
DS		 205 /*
206 * If we are importing another vrf into us keep a list of
207 * vrf names that are being imported into us.
208 */
12a844a5 209 struct list *import_vrf;
1d4e8b0d
DS		 210
211 /*
212 * if we are being exported to another vrf keep a list of
213 * vrf names that we are being exported to.
214 */
12a844a5 215 struct list *export_vrf;
e70e9f8e
PZ		 216};
217
ad4cbda1 218/*
219 * Type of 'struct bgp'.
220 * - Default: The default instance
221 * - VRF: A specific (non-default) VRF
222 * - View: An instance used for route exchange
223 * The "default" instance is treated separately to simplify the code. Note
224 * that if deployed in a Multi-VRF environment, it may not exist.
225 */
d62a17ae 226enum bgp_instance_type {
227 BGP_INSTANCE_TYPE_DEFAULT,
228 BGP_INSTANCE_TYPE_VRF,
229 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 230};
231
718e3744 232/* BGP instance structure. */
d62a17ae 233struct bgp {
234 /* AS number of this BGP instance. */
235 as_t as;
236
237 /* Name of this BGP instance. */
238 char *name;
3572fb26 239 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 240
241 /* Type of instance and VRF id. */
242 enum bgp_instance_type inst_type;
243 vrf_id_t vrf_id;
244
245 /* Reference count to allow peer_delete to finish after bgp_delete */
246 int lock;
247
248 /* Self peer. */
249 struct peer *peer_self;
250
251 /* BGP peer. */
252 struct list *peer;
253 struct hash *peerhash;
254
255 /* BGP peer group. */
256 struct list *group;
257
258 /* The maximum number of BGP dynamic neighbors that can be created */
259 int dynamic_neighbors_limit;
260
261 /* The current number of BGP dynamic neighbors */
262 int dynamic_neighbors_count;
263
264 struct hash *update_groups[BGP_AF_MAX];
265
266 /*
267 * Global statistics for update groups.
268 */
269 struct {
d7c0a89a
QY		 270 uint32_t join_events;
271 uint32_t prune_events;
272 uint32_t merge_events;
273 uint32_t split_events;
274 uint32_t updgrp_switch_events;
275 uint32_t peer_refreshes_combined;
276 uint32_t adj_count;
277 uint32_t merge_checks_triggered;
278
279 uint32_t updgrps_created;
280 uint32_t updgrps_deleted;
281 uint32_t subgrps_created;
282 uint32_t subgrps_deleted;
d62a17ae 283 } update_group_stats;
284
285 /* BGP configuration. */
d7c0a89a 286 uint16_t config;
c2d58d6d 287#define BGP_CONFIG_CLUSTER_ID (1 << 0)
288#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 289
d62a17ae 290 /* BGP router identifier. */
291 struct in_addr router_id;
292 struct in_addr router_id_static;
293 struct in_addr router_id_zebra;
718e3744 294
d62a17ae 295 /* BGP route reflector cluster ID. */
296 struct in_addr cluster_id;
718e3744 297
d62a17ae 298 /* BGP confederation information. */
299 as_t confed_id;
300 as_t *confed_peers;
301 int confed_peers_cnt;
718e3744 302
d62a17ae 303 struct thread
304 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 305
d7c0a89a 306 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 307#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY		 308 uint32_t maxmed_onstartup_value; /* Max-med value when active on
309 start-up */
d62a17ae 310 struct thread
311 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 312 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 313
d7c0a89a 314 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 315#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY		 316 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
317 */
abc920f8
DS		 318#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
319
d7c0a89a
QY		 320 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
321 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 322
323 /* BGP update delay on startup */
324 struct thread *t_update_delay;
325 struct thread *t_establish_wait;
d7c0a89a
QY		 326 uint8_t update_delay_over;
327 uint8_t main_zebra_update_hold;
328 uint8_t main_peers_update_hold;
329 uint16_t v_update_delay;
330 uint16_t v_establish_wait;
d62a17ae 331 char update_delay_begin_time[64];
332 char update_delay_end_time[64];
333 char update_delay_zebra_resume_time[64];
334 char update_delay_peers_resume_time[64];
d7c0a89a
QY		 335 uint32_t established;
336 uint32_t restarted_peers;
337 uint32_t implicit_eors;
338 uint32_t explicit_eors;
f188f2c4
DS		 339#define BGP_UPDATE_DELAY_DEF 0
340#define BGP_UPDATE_DELAY_MIN 0
341#define BGP_UPDATE_DELAY_MAX 3600
342
d62a17ae 343 /* BGP flags. */
d7c0a89a 344 uint32_t flags;
718e3744 345#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
346#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
347#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
348#define BGP_FLAG_MED_CONFED (1 << 3)
349#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
350#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
351#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
352#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
353#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
354#define BGP_FLAG_IMPORT_CHECK (1 << 9)
355#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 356#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 357#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 358#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 359#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 360#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 361#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 362#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 363#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 364#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 365#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 366#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 367
d62a17ae 368 /* BGP Per AF flags */
d7c0a89a 369 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 370#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 371/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK		 372#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
373#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
374#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
375#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
376/* import/export between address families */
377#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
378#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
379/* vrf-route leaking flags */
380#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
381#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
154faa50 382
210ec2a0
AS		 383 /* BGP per AF peer count */
384 uint32_t af_peer_count[AFI_MAX][SAFI_MAX];
385
d62a17ae 386 /* Route table for next-hop lookup cache. */
387 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 388
d62a17ae 389 /* Route table for import-check */
390 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 391
d62a17ae 392 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 393
d62a17ae 394 struct hash *address_hash;
6aeb9e78 395
db0e1937
MK		 396 /* DB for all local tunnel-ips - used mainly for martian checks
397 Currently it only has all VxLan tunnel IPs*/
398 struct hash *tip_hash;
399
d62a17ae 400 /* Static route configuration. */
401 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 402
d62a17ae 403 /* Aggregate address configuration. */
404 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 405
d62a17ae 406 /* BGP routing information base. */
407 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 408
d62a17ae 409 /* BGP table route-map. */
410 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 411
d62a17ae 412 /* BGP redistribute configuration. */
413 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 414
318cac96 415 /* Allocate MPLS labels */
d7c0a89a 416 uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
318cac96 417
f3d32faa
PG		 418 /* Allocate hash entries to store policy routing information
419 * The hash are used to host pbr rules somewhere.
420 * Actually, pbr will only be used by flowspec
421 * those hash elements will have relationship together as
422 * illustrated in below diagram:
423 *
424 * pbr_action a <----- pbr_match i <--- pbr_match_entry 1..n
425 * <----- pbr_match j <--- pbr_match_entry 1..m
27e376d4 426 * <----- pbr_rule k
f3d32faa
PG		 427 *
428 * - here in BGP structure, the list of match and actions will
429 * stand for the list of ipset sets, and table_ids in the kernel
430 * - the arrow above between pbr_match and pbr_action indicate
431 * that a backpointer permits match to find the action
432 * - the arrow betwen match_entry and match is a hash list
433 * contained in match, that lists the whole set of entries
434 */
435 struct hash *pbr_match_hash;
27e376d4 436 struct hash *pbr_rule_hash;
f3d32faa
PG		 437 struct hash *pbr_action_hash;
438
d62a17ae 439 /* timer to re-evaluate neighbor default-originate route-maps */
440 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 441#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
442
d62a17ae 443 /* BGP distance configuration. */
d7c0a89a
QY		 444 uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
445 uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
446 uint8_t distance_local[AFI_MAX][SAFI_MAX];
d62a17ae 447
448 /* BGP default local-preference. */
d7c0a89a 449 uint32_t default_local_pref;
d62a17ae 450
451 /* BGP default subgroup pkt queue max */
d7c0a89a 452 uint32_t default_subgroup_pkt_queue_max;
d62a17ae 453
454 /* BGP default timer. */
d7c0a89a
QY		 455 uint32_t default_holdtime;
456 uint32_t default_keepalive;
d62a17ae 457
458 /* BGP graceful restart */
d7c0a89a
QY		 459 uint32_t restart_time;
460 uint32_t stalepath_time;
d62a17ae 461
462 /* Maximum-paths configuration */
463 struct bgp_maxpaths_cfg {
d7c0a89a
QY		 464 uint16_t maxpaths_ebgp;
465 uint16_t maxpaths_ibgp;
466 uint16_t ibgp_flags;
5e242b0d 467#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 468 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 469
555e09d4
QY		 470 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
471 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
472
37a333fe
QY		 473 /* Automatic coalesce adjust on/off */
474 bool heuristic_coalesce;
14b8641a
QY		 475 /* Actual coalesce time */
476 uint32_t coalesce_time;
adbac85e 477
f26845f9
QY		 478 /* Auto-shutdown new peers */
479 bool autoshutdown;
480
dcc68b5e 481 struct bgp_addpath_bgp_data tx_addpath;
65efcfce
LB		 482
483#if ENABLE_BGP_VNC
d62a17ae 484 struct rfapi_cfg *rfapi_cfg;
485 struct rfapi *rfapi;
65efcfce 486#endif
19df7279 487
d62a17ae 488 /* EVPN related information */
14c1a7bf 489
d62a17ae 490 /* EVI hash table */
491 struct hash *vnihash;
14c1a7bf 492
1a98c087
MK		 493 /* EVPN enable - advertise gateway macip routes */
494 int advertise_gw_macip;
495
d62a17ae 496 /* EVPN enable - advertise local VNIs and their MACs etc. */
497 int advertise_all_vni;
14c1a7bf 498
9dac9fc8
DA		 499 /* RFC 8212 - prevent route leaks. */
500 int ebgp_requires_policy;
501#define DEFAULT_EBGP_POLICY_DISABLED 0
502#define DEFAULT_EBGP_POLICY_ENABLED 1
503
85c8d83b
CS		 504 struct bgp_evpn_info *evpn_info;
505
bf1061d8
VB		 506 /* EVPN - use RFC 8365 to auto-derive RT */
507 int advertise_autort_rfc8365;
508
fd069644
DS		 509 /*
510 * Flooding mechanism for BUM packets for VxLAN-EVPN.
511 */
512 enum vxlan_flood_control vxlan_flood_ctrl;
513
d62a17ae 514 /* Hash table of Import RTs to EVIs */
515 struct hash *import_rt_hash;
14c1a7bf 516
10ebe1ab
MK		 517 /* Hash table of VRF import RTs to VRFs */
518 struct hash *vrf_import_rt_hash;
519
fe1dc5a3
MK		 520 /* L3-VNI corresponding to this vrf */
521 vni_t l3vni;
522
523 /* router-mac to be used in mac-ip routes for this vrf */
524 struct ethaddr rmac;
525
b67a60d2 526 /* originator ip - to be used as NH for type-5 routes */
527 struct in_addr originator_ip;
528
0483af6e 529 /* SVI associated with the L3-VNI corresponding to this vrf */
530 ifindex_t l3vni_svi_ifindex;
531
fe1dc5a3
MK		 532 /* vrf flags */
533 uint32_t vrf_flags;
676f83b9 534#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 535#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
536#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
537#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK		 538#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
539
676f83b9 540
541 /* unique ID for auto derivation of RD for this vrf */
542 uint16_t vrf_rd_id;
543
92708db6 544 /* Automatically derived RD for this VRF */
545 struct prefix_rd vrf_prd_auto;
546
676f83b9 547 /* RD for this VRF */
548 struct prefix_rd vrf_prd;
c581d8b0
MK		 549
550 /* import rt list for the vrf instance */
551 struct list *vrf_import_rtl;
552
553 /* export rt list for the vrf instance */
554 struct list *vrf_export_rtl;
fe1dc5a3 555
6a8657d0
MK		 556 /* list of corresponding l2vnis (struct bgpevpn) */
557 struct list *l2vnis;
558
53c84f78
MK		 559 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
560 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
561
e70e9f8e 562 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 563
4762c213
PG		 564 struct bgp_pbr_config *bgp_pbr_cfg;
565
50f74cf1 566 /* local esi hash table */
567 struct hash *esihash;
568
36dc7588 569 /* Count of peers in established state */
570 uint32_t established_peers;
571
d62a17ae 572 QOBJ_FIELDS
718e3744 573};
19df7279 574DECLARE_QOBJ_TYPE(bgp)
718e3744 575
2a3d5731 576#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 577
d62a17ae 578#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
579 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
580 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
581 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 582
718e3744 583/* BGP peer-group support. */
d62a17ae 584struct peer_group {
585 /* Name of the peer-group. */
586 char *name;
718e3744 587
d62a17ae 588 /* Pointer to BGP. */
589 struct bgp *bgp;
718e3744 590
d62a17ae 591 /* Peer-group client list. */
592 struct list *peer;
f14e6fdb 593
d62a17ae 594 /** Dynamic neighbor listening ranges */
595 struct list *listen_range[AFI_MAX];
596
597 /* Peer-group config */
598 struct peer *conf;
718e3744 599};
600
601/* BGP Notify message format. */
d62a17ae 602struct bgp_notify {
d7c0a89a
QY		 603 uint8_t code;
604 uint8_t subcode;
d62a17ae 605 char *data;
606 bgp_size_t length;
d7c0a89a 607 uint8_t *raw_data;
718e3744 608};
609
610/* Next hop self address. */
d62a17ae 611struct bgp_nexthop {
612 struct interface *ifp;
613 struct in_addr v4;
614 struct in6_addr v6_global;
615 struct in6_addr v6_local;
718e3744 616};
617
a82478b9
DS		 618/* BGP addpath values */
619#define BGP_ADDPATH_RX 1
620#define BGP_ADDPATH_TX 2
621#define BGP_ADDPATH_ID_LEN 4
622
adbac85e
DW		 623#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
624
3f54c705 625/* Route map direction */
2a3d5731
DW		 626#define RMAP_IN 0
627#define RMAP_OUT 1
628#define RMAP_MAX 2
fee0f4c6 629
6381f7b4
DA		 630#define BGP_DEFAULT_TTL 1
631
65efcfce
LB		 632#include "filter.h"
633
718e3744 634/* BGP filter structure. */
d62a17ae 635struct bgp_filter {
636 /* Distribute-list. */
637 struct {
638 char *name;
639 struct access_list *alist;
640 } dlist[FILTER_MAX];
641
642 /* Prefix-list. */
643 struct {
644 char *name;
645 struct prefix_list *plist;
646 } plist[FILTER_MAX];
647
648 /* Filter-list. */
649 struct {
650 char *name;
651 struct as_list *aslist;
652 } aslist[FILTER_MAX];
653
654 /* Route-map. */
655 struct {
656 char *name;
657 struct route_map *map;
658 } map[RMAP_MAX];
659
660 /* Unsuppress-map. */
661 struct {
662 char *name;
663 struct route_map *map;
664 } usmap;
718e3744 665};
666
6d85b15b
JBD		 667/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
668 a peer who's AS is part of our Confederation. */
d62a17ae 669typedef enum {
faa16034
DS		 670 BGP_PEER_UNSPECIFIED,
671 BGP_PEER_IBGP,
d62a17ae 672 BGP_PEER_EBGP,
673 BGP_PEER_INTERNAL,
674 BGP_PEER_CONFED,
6d85b15b
JBD		 675} bgp_peer_sort_t;
676
d6661008
DS		 677/* BGP message header and packet size. */
678#define BGP_MARKER_SIZE 16
679#define BGP_HEADER_SIZE 19
680#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 681#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 682
3f9c7369
DS		 683/*
684 * Trigger delay for bgp_announce_route().
685 */
686#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
687#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
688
d62a17ae 689struct peer_af {
690 /* back pointer to the peer */
691 struct peer *peer;
3f9c7369 692
d62a17ae 693 /* which subgroup the peer_af belongs to */
694 struct update_subgroup *subgroup;
3f9c7369 695
d62a17ae 696 /* for being part of an update subgroup's peer list */
697 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 698
d62a17ae 699 /* for being part of a packet's peer list */
700 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 701
d62a17ae 702 struct bpacket *next_pkt_to_send;
3f9c7369 703
d62a17ae 704 /*
705 * Trigger timer for bgp_announce_route().
706 */
707 struct thread *t_announce_route;
3f9c7369 708
d62a17ae 709 afi_t afi;
710 safi_t safi;
711 int afid;
3f9c7369
DS		 712};
713
718e3744 714/* BGP neighbor structure. */
d62a17ae 715struct peer {
716 /* BGP structure. */
717 struct bgp *bgp;
718
719 /* reference count, primarily to allow bgp_process'ing of route_node's
720 * to be done after a struct peer is deleted.
721 *
722 * named 'lock' for hysterical reasons within Quagga.
723 */
724 int lock;
725
726 /* BGP peer group. */
727 struct peer_group *group;
728 uint64_t version[AFI_MAX][SAFI_MAX];
729
730 /* BGP peer_af structures, per configured AF on this peer */
731 struct peer_af *peer_af_array[BGP_AF_MAX];
732
733 /* Peer's remote AS number. */
734 int as_type;
735 as_t as;
736
737 /* Peer's local AS number. */
738 as_t local_as;
739
740 bgp_peer_sort_t sort;
741
742 /* Peer's Change local AS number. */
743 as_t change_local_as;
744
745 /* Remote router ID. */
746 struct in_addr remote_id;
747
748 /* Local router ID. */
749 struct in_addr local_id;
750
751 /* Packet receive and send buffer. */
424ab01d
QY		 752 pthread_mutex_t io_mtx; // guards ibuf, obuf
753 struct stream_fifo *ibuf; // packets waiting to be processed
754 struct stream_fifo *obuf; // packets waiting to be written
755
74ffbfe6
QY		 756 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
757 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 758
759 struct stream *curr; // the current packet being parsed
d62a17ae 760
761 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 762 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 763 * actual packet is then constructed by concatenating the two.
764 */
765 struct stream *scratch;
766
767 /* the doppelganger peer structure, due to dual TCP conn setup */
768 struct peer *doppelganger;
769
770 /* Status of the peer. */
771 int status;
772 int ostatus;
773
774 /* FSM events, stored for debug purposes.
775 * Note: uchar used for reduced memory usage.
776 */
777 unsigned char cur_event;
778 unsigned char last_event;
779 unsigned char last_major_event;
780
781 /* Peer index, used for dumping TABLE_DUMP_V2 format */
782 uint16_t table_dump_index;
783
784 /* Peer information */
785 int fd; /* File descriptor */
786 int ttl; /* TTL of TCP connection to the peer. */
787 int rtt; /* Estimated round-trip-time from TCP_INFO */
788 int gtsm_hops; /* minimum hopcount to peer */
789 char *desc; /* Description of the peer. */
790 unsigned short port; /* Destination port for peer */
791 char *host; /* Printable address of the peer. */
792 union sockunion su; /* Sockunion address of the peer. */
a80beece 793#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 794 time_t uptime; /* Last Up/Down time */
795 time_t readtime; /* Last read time */
796 time_t resettime; /* Last reset time */
797
d62a17ae 798 char *conf_if; /* neighbor interface config name. */
799 struct interface *ifp; /* corresponding interface */
800 char *ifname; /* bind interface name. */
801 char *update_if;
802 union sockunion *update_source;
803
804 union sockunion *su_local; /* Sockunion of local address. */
805 union sockunion *su_remote; /* Sockunion of remote address. */
806 int shared_network; /* Is this peer shared same network. */
807 struct bgp_nexthop nexthop; /* Nexthop */
808
809 /* Peer address family configuration. */
d7c0a89a
QY		 810 uint8_t afc[AFI_MAX][SAFI_MAX];
811 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
812 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
813 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 814
815 /* Capability flags (reset in bgp_stop) */
d7c0a89a 816 uint32_t cap;
718e3744 817#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
818#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
819#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
820#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
821#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 822#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
823#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 824#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
825#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 826#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
827#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 828#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
829#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 830#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
831#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 832#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
833#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 834
d62a17ae 835 /* Capability flags (reset in bgp_stop) */
d7c0a89a 836 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 837#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
838#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
839#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
840#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
841#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
842#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 843#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
844#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 845#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
846#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
847#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
848#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 849#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
850#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
851#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 852
d62a17ae 853 /* Global configuration flags. */
9fb964de
PM		 854 /*
855 * Parallel array to flags that indicates whether each flag originates
856 * from a peer-group or if it is config that is specific to this
857 * individual peer. If a flag is set independent of the peer-group, the
858 * same bit should be set here. If this peer is a peer-group, this
859 * memory region should be all zeros.
860 *
861 * The assumption is that the default state for all flags is unset,
862 * so if a flag is unset, the corresponding override flag is unset too.
863 * However if a flag is set, the corresponding override flag is set.
864 */
865 uint32_t flags_override;
866 /*
867 * Parallel array to flags that indicates whether the default behavior
868 * of *flags_override* should be inverted. If a flag is unset and the
869 * corresponding invert flag is set, the corresponding override flag
870 * would be set. However if a flag is set and the corresponding invert
871 * flag is unset, the corresponding override flag would be unset.
872 *
873 * This can be used for attributes like *send-community*, which are
874 * implicitely enabled and have to be disabled explicitely, compared to
875 * 'normal' attributes like *next-hop-self* which are implicitely set.
876 *
877 * All operations dealing with flags should apply the following boolean
878 * logic to keep the internal flag system in a sane state:
879 *
880 * value=0 invert=0 Inherit flag if member, otherwise unset flag
881 * value=0 invert=1 Unset flag unconditionally
882 * value=1 invert=0 Set flag unconditionally
883 * value=1 invert=1 Inherit flag if member, otherwise set flag
884 *
885 * Contrary to the implementation of *flags_override*, the flag
886 * inversion state can be set either on the peer OR the peer *and* the
887 * peer-group. This was done on purpose, as the inversion state of a
888 * flag can be determined on either the peer or the peer-group.
889 *
890 * Example: Enabling the cisco configuration mode inverts all flags
891 * related to *send-community* unconditionally for both peer-groups and
892 * peers.
893 *
894 * This behavior is different for interface peers though, which enable
895 * the *extended-nexthop* flag by default, which regular peers do not.
896 * As the peer-group can contain both regular and interface peers, the
897 * flag inversion state must be set on the peer only.
898 *
899 * When a peer inherits the configuration from a peer-group and the
900 * inversion state of the flag differs between peer and peer-group, the
901 * newly set value must equal to the inverted state of the peer-group.
902 */
903 uint32_t flags_invert;
904 /*
905 * Effective array for storing the peer/peer-group flags. In case of a
906 * peer-group, the peer-specific overrides (see flags_override and
907 * flags_invert) must be respected.
908 */
d7c0a89a 909 uint32_t flags;
718e3744 910#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
911#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
912#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
913#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
914#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 915#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 916#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 917#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 918#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
47cbc09b
PM		 919#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
920#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 921#define PEER_FLAG_LONESOUL (1 << 11)
922#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
923#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 924#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
47cbc09b
PM		 925#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
926#define PEER_FLAG_ENFORCE_FIRST_AS (1 << 16) /* enforce-first-as */
b90a8e13
PM		 927#define PEER_FLAG_ROUTEADV (1 << 17) /* route advertise */
928#define PEER_FLAG_TIMER (1 << 18) /* keepalive & holdtime */
929#define PEER_FLAG_TIMER_CONNECT (1 << 19) /* connect timer */
a14810f4
PM		 930#define PEER_FLAG_PASSWORD (1 << 20) /* password */
931#define PEER_FLAG_LOCAL_AS (1 << 21) /* local-as */
932#define PEER_FLAG_UPDATE_SOURCE (1 << 22) /* update-source */
02a82b47 933
d62a17ae 934 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
935 char *tx_shutdown_message;
718e3744 936
d62a17ae 937 /* NSF mode (graceful restart) */
d7c0a89a 938 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 939
04e1c5bb
QY		 940 /* Peer Per AF flags */
941 /*
9fb964de
PM		 942 * Please consult the comments for *flags_override*, *flags_invert* and
943 * *flags* to understand what these three arrays do. The address-family
944 * specific attributes are being treated the exact same way as global
945 * peer attributes.
04e1c5bb
QY		 946 */
947 uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
27c05d4d 948 uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
d7c0a89a 949 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 950#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
951#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
952#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
953#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
954#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
955#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
956#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
957#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
958#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
959#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
960#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
961#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
962#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
963#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
964#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
965#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 966#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 967#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 968#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
969#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 970#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 971#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
d93f7ffc 972#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 973#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 974#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 975
dcc68b5e
MS		 976 enum bgp_addpath_strat addpath_type[AFI_MAX][SAFI_MAX];
977
d62a17ae 978 /* MD5 password */
979 char *password;
718e3744 980
d62a17ae 981 /* default-originate route-map. */
982 struct {
983 char *name;
984 struct route_map *map;
985 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 986
d62a17ae 987 /* Peer status flags. */
d7c0a89a 988 uint16_t sflags;
718e3744 989#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
990#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
991#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
992#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
993#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 994#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
995#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 996
d62a17ae 997 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 998 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 999#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
1000#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 1001#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
1002#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
1003#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
1004#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 1005
b90a8e13 1006 /* Configured timer values. */
1588f6f4
QY		 1007 _Atomic uint32_t holdtime;
1008 _Atomic uint32_t keepalive;
1009 _Atomic uint32_t connect;
1010 _Atomic uint32_t routeadv;
d62a17ae 1011
1012 /* Timer values. */
1588f6f4
QY		 1013 _Atomic uint32_t v_start;
1014 _Atomic uint32_t v_connect;
1015 _Atomic uint32_t v_holdtime;
1016 _Atomic uint32_t v_keepalive;
1017 _Atomic uint32_t v_routeadv;
1018 _Atomic uint32_t v_pmax_restart;
1019 _Atomic uint32_t v_gr_restart;
d62a17ae 1020
1021 /* Threads. */
1022 struct thread *t_read;
424ab01d 1023 struct thread *t_write;
d62a17ae 1024 struct thread *t_start;
387f984e
QY		 1025 struct thread *t_connect_check_r;
1026 struct thread *t_connect_check_w;
d62a17ae 1027 struct thread *t_connect;
1028 struct thread *t_holdtime;
d62a17ae 1029 struct thread *t_routeadv;
1030 struct thread *t_pmax_restart;
1031 struct thread *t_gr_restart;
1032 struct thread *t_gr_stale;
56257a44 1033 struct thread *t_generate_updgrp_packets;
424ab01d 1034 struct thread *t_process_packet;
d62a17ae 1035
49507a6f 1036 /* Thread flags. */
0545c373 1037 _Atomic uint32_t thread_flags;
b750b0ba
QY		 1038#define PEER_THREAD_WRITES_ON (1 << 0)
1039#define PEER_THREAD_READS_ON (1 << 1)
1040#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 1041 /* workqueues */
1042 struct work_queue *clear_node_queue;
1043
a4d82a8a
PZ		 1044#define PEER_TOTAL_RX(peer) \
1045 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
1046 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
1047 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
1048 + atomic_load_explicit(&peer->refresh_in, \
1049 memory_order_relaxed) \
1050 + atomic_load_explicit(&peer->keepalive_in, \
1051 memory_order_relaxed) \
1052 + atomic_load_explicit(&peer->dynamic_cap_in, \
1053 memory_order_relaxed)
1054
1055#define PEER_TOTAL_TX(peer) \
1056 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
1057 + atomic_load_explicit(&peer->update_out, \
1058 memory_order_relaxed) \
1059 + atomic_load_explicit(&peer->notify_out, \
1060 memory_order_relaxed) \
1061 + atomic_load_explicit(&peer->refresh_out, \
1062 memory_order_relaxed) \
1063 + atomic_load_explicit(&peer->keepalive_out, \
1064 memory_order_relaxed) \
1065 + atomic_load_explicit(&peer->dynamic_cap_out, \
1066 memory_order_relaxed)
0112e9e0 1067
d62a17ae 1068 /* Statistics field */
996c9314
LB		 1069 _Atomic uint32_t open_in; /* Open message input count */
1070 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 1071 _Atomic uint32_t update_in; /* Update message input count */
1072 _Atomic uint32_t update_out; /* Update message ouput count */
1073 _Atomic time_t update_time; /* Update message received time. */
1074 _Atomic uint32_t keepalive_in; /* Keepalive input count */
1075 _Atomic uint32_t keepalive_out; /* Keepalive output count */
1076 _Atomic uint32_t notify_in; /* Notify input count */
1077 _Atomic uint32_t notify_out; /* Notify output count */
1078 _Atomic uint32_t refresh_in; /* Route Refresh input count */
1079 _Atomic uint32_t refresh_out; /* Route Refresh output count */
1080 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 1081 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 1082
1083 /* BGP state count */
d7c0a89a
QY		 1084 uint32_t established; /* Established */
1085 uint32_t dropped; /* Dropped */
d62a17ae 1086
1087 /* Update delay related fields */
d7c0a89a 1088 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 1089 for EOR */
1090
1091 /* Syncronization list and time. */
1092 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
1093 time_t synctime;
1588f6f4
QY		 1094 /* timestamp when the last UPDATE msg was written */
1095 _Atomic time_t last_write;
1096 /* timestamp when the last msg was written */
1097 _Atomic time_t last_update;
d62a17ae 1098
1099 /* Send prefix count. */
1100 unsigned long scount[AFI_MAX][SAFI_MAX];
1101
d62a17ae 1102 /* Notify data. */
1103 struct bgp_notify notify;
1104
d62a17ae 1105 /* Filter structure. */
1106 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
1107
70ee29b4
PM		 1108 /*
1109 * Parallel array to filter that indicates whether each filter
1110 * originates from a peer-group or if it is config that is specific to
1111 * this individual peer. If a filter is set independent of the
1112 * peer-group the appropriate bit should be set here. If this peer is a
1113 * peer-group, this memory region should be all zeros. The assumption
1114 * is that the default state for all flags is unset. Due to filters
1115 * having a direction (e.g. in/out/...), this array has a third
1116 * dimension for storing the overrides independently per direction.
1117 *
1118 * Notes:
1119 * - if a filter for an individual peer is unset, the corresponding
1120 * override flag is unset and the peer is considered to be back in
1121 * sync with the peer-group.
1122 * - This does *not* contain the filter values, rather it contains
1123 * whether the filter in filter (struct bgp_filter) is peer-specific.
1124 */
1125 uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
1126 ? FILTER_MAX
1127 : RMAP_MAX];
1128#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
1129#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
1130#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
1131#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
1132#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
1133
d62a17ae 1134 /* ORF Prefix-list */
1135 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
1136
1137 /* Text description of last attribute rcvd */
1138 char rcvd_attr_str[BUFSIZ];
1139
1140 /* Track if we printed the attribute in debugs */
1141 int rcvd_attr_printed;
1142
1143 /* Prefix count. */
3b59184d 1144 uint32_t pcount[AFI_MAX][SAFI_MAX];
d62a17ae 1145
1146 /* Max prefix count. */
3b59184d 1147 uint32_t pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY		 1148 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1149 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1150#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1151
d62a17ae 1152 /* allowas-in. */
1153 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1154
d62a17ae 1155 /* weight */
1156 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1157
d62a17ae 1158 /* peer reset cause */
1159 char last_reset;
e0701b79 1160#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1161#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1162#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1163#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1164#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1165#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1166#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1167#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1168#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1169#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1170#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1171#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1172#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1173#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1174#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1175#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1176#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1177#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1178#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1179#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1180#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1181#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1182#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1183#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 1184#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1185#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 1186 unsigned long last_reset_cause_size;
d7c0a89a 1187 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1188
d62a17ae 1189 /* The kind of route-map Flags.*/
d7c0a89a 1190 uint8_t rmap_type;
ac41b2a2 1191#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1192#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1193#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1194#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1195#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1196#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1197#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1198#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1199
d62a17ae 1200 /* peer specific BFD information */
1201 struct bfd_info *bfd_info;
04b6bdc0 1202
d62a17ae 1203 /* hostname and domainname advertised by host */
1204 char *hostname;
1205 char *domainname;
19df7279 1206
d62a17ae 1207 QOBJ_FIELDS
718e3744 1208};
19df7279 1209DECLARE_QOBJ_TYPE(peer)
718e3744 1210
598ce6bd 1211/* Inherit peer attribute from peer-group. */
e7103a96
PM		 1212#define PEER_ATTR_INHERIT(peer, group, attr) \
1213 ((peer)->attr = (group)->conf->attr)
1214#define PEER_STR_ATTR_INHERIT(peer, group, attr, mt) \
598ce6bd
PM		 1215 do { \
1216 if ((peer)->attr) \
1217 XFREE(mt, (peer)->attr); \
e7103a96
PM		 1218 if ((group)->conf->attr) \
1219 (peer)->attr = XSTRDUP(mt, (group)->conf->attr); \
598ce6bd
PM		 1220 else \
1221 (peer)->attr = NULL; \
1222 } while (0)
a14810f4
PM		 1223#define PEER_SU_ATTR_INHERIT(peer, group, attr) \
1224 do { \
1225 if ((peer)->attr) \
1226 sockunion_free((peer)->attr); \
1227 if ((group)->conf->attr) \
1228 (peer)->attr = sockunion_dup((group)->conf->attr); \
1229 else \
1230 (peer)->attr = NULL; \
1231 } while (0)
598ce6bd 1232
ad4cbda1 1233/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1234#define BGP_PEER_START_SUPPRESSED(P) \
1235 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1236 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1237
0df7c91f
PJ		 1238#define PEER_PASSWORD_MINLEN (1)
1239#define PEER_PASSWORD_MAXLEN (80)
1240
718e3744 1241/* This structure's member directly points incoming packet data
1242 stream. */
d62a17ae 1243struct bgp_nlri {
1244 /* AFI. */
a46a2e9b 1245 uint16_t afi; /* iana_afi_t */
718e3744 1246
d62a17ae 1247 /* SAFI. */
a46a2e9b 1248 uint8_t safi; /* iana_safi_t */
718e3744 1249
d62a17ae 1250 /* Pointer to NLRI byte stream. */
d7c0a89a 1251 uint8_t *nlri;
718e3744 1252
d62a17ae 1253 /* Length of whole NLRI. */
1254 bgp_size_t length;
718e3744 1255};
1256
1257/* BGP versions. */
1258#define BGP_VERSION_4 4
718e3744 1259
1260/* Default BGP port number. */
1261#define BGP_PORT_DEFAULT 179
1262
718e3744 1263/* BGP minimum message size. */
1264#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1265#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1266#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1267#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1268#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1269#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1270
1271/* BGP message types. */
1272#define BGP_MSG_OPEN 1
1273#define BGP_MSG_UPDATE 2
1274#define BGP_MSG_NOTIFY 3
1275#define BGP_MSG_KEEPALIVE 4
1276#define BGP_MSG_ROUTE_REFRESH_NEW 5
1277#define BGP_MSG_CAPABILITY 6
1278#define BGP_MSG_ROUTE_REFRESH_OLD 128
1279
1280/* BGP open optional parameter. */
1281#define BGP_OPEN_OPT_AUTH 1
1282#define BGP_OPEN_OPT_CAP 2
1283
1284/* BGP4 attribute type codes. */
1285#define BGP_ATTR_ORIGIN 1
1286#define BGP_ATTR_AS_PATH 2
1287#define BGP_ATTR_NEXT_HOP 3
1288#define BGP_ATTR_MULTI_EXIT_DISC 4
1289#define BGP_ATTR_LOCAL_PREF 5
1290#define BGP_ATTR_ATOMIC_AGGREGATE 6
1291#define BGP_ATTR_AGGREGATOR 7
1292#define BGP_ATTR_COMMUNITIES 8
1293#define BGP_ATTR_ORIGINATOR_ID 9
1294#define BGP_ATTR_CLUSTER_LIST 10
1295#define BGP_ATTR_DPA 11
1296#define BGP_ATTR_ADVERTISER 12
1297#define BGP_ATTR_RCID_PATH 13
1298#define BGP_ATTR_MP_REACH_NLRI 14
1299#define BGP_ATTR_MP_UNREACH_NLRI 15
1300#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1301#define BGP_ATTR_AS4_PATH 17
1302#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1303#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1304#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1305#define BGP_ATTR_ENCAP 23
57d187bc 1306#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1307#define BGP_ATTR_PREFIX_SID 40
943d595a 1308#if ENABLE_BGP_VNC_ATTR
65efcfce
LB		 1309#define BGP_ATTR_VNC 255
1310#endif
718e3744 1311
1312/* BGP update origin. */
1313#define BGP_ORIGIN_IGP 0
1314#define BGP_ORIGIN_EGP 1
1315#define BGP_ORIGIN_INCOMPLETE 2
1316
1317/* BGP notify message codes. */
1318#define BGP_NOTIFY_HEADER_ERR 1
1319#define BGP_NOTIFY_OPEN_ERR 2
1320#define BGP_NOTIFY_UPDATE_ERR 3
1321#define BGP_NOTIFY_HOLD_ERR 4
1322#define BGP_NOTIFY_FSM_ERR 5
1323#define BGP_NOTIFY_CEASE 6
1324#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1325
4b4e07d2
DT		 1326#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1327
718e3744 1328/* BGP_NOTIFY_HEADER_ERR sub codes. */
1329#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1330#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1331#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1332
1333/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1334#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1335#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1336#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1337#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1338#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1339#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1340#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1341#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1342
1343/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1344#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1345#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1346#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1347#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1348#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1349#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1350#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1351#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1352#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1353#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1354#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1355
4b4e07d2 1356/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1357#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1358#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1359#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1360#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1361#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1362#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1363#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1364#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1365
1366/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1367#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1368#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1369#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1370
1371/* BGP finite state machine status. */
1372#define Idle 1
1373#define Connect 2
1374#define Active 3
1375#define OpenSent 4
1376#define OpenConfirm 5
1377#define Established 6
ca058a30
PJ		 1378#define Clearing 7
1379#define Deleted 8
1380#define BGP_STATUS_MAX 9
718e3744 1381
1382/* BGP finite state machine events. */
1383#define BGP_Start 1
1384#define BGP_Stop 2
1385#define TCP_connection_open 3
1386#define TCP_connection_closed 4
1387#define TCP_connection_open_failed 5
1388#define TCP_fatal_error 6
1389#define ConnectRetry_timer_expired 7
1390#define Hold_Timer_expired 8
1391#define KeepAlive_timer_expired 9
1392#define Receive_OPEN_message 10
1393#define Receive_KEEPALIVE_message 11
1394#define Receive_UPDATE_message 12
1395#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1396#define Clearing_Completed 14
1397#define BGP_EVENTS_MAX 15
718e3744 1398
1399/* BGP timers default value. */
8efe88ea 1400/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1401#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1402#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1403#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1404#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1405#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1406#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1407
1408/* BGP default local preference. */
1409#define BGP_DEFAULT_LOCAL_PREF 100
1410
7f323236
DW		 1411/* BGP local-preference to send when 'bgp graceful-shutdown'
1412 * is configured */
1413#define BGP_GSHUT_LOCAL_PREF 0
1414
3f9c7369
DS		 1415/* BGP default subgroup packet queue max . */
1416#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1417
538621f2 1418/* BGP graceful restart */
1419#define BGP_DEFAULT_RESTART_TIME 120
1420#define BGP_DEFAULT_STALEPATH_TIME 360
1421
718e3744 1422/* BGP uptime string length. */
1423#define BGP_UPTIME_LEN 25
1424
1425/* Default configuration settings for bgpd. */
1426#define BGP_VTY_PORT 2605
718e3744 1427#define BGP_DEFAULT_CONFIG "bgpd.conf"
1428
1429/* Check AS path loop when we send NLRI. */
1430/* #define BGP_SEND_ASPATH_CHECK */
1431
f14e6fdb
DS		 1432/* BGP Dynamic Neighbors feature */
1433#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1434#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1435#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1436
718e3744 1437/* Flag for peer_clear_soft(). */
d62a17ae 1438enum bgp_clear_type {
1439 BGP_CLEAR_SOFT_NONE,
1440 BGP_CLEAR_SOFT_OUT,
1441 BGP_CLEAR_SOFT_IN,
1442 BGP_CLEAR_SOFT_BOTH,
1443 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1444};
1445
1446/* Macros. */
424ab01d 1447#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1448#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1449#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1450 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1451
718e3744 1452/* BGP error codes. */
1453#define BGP_SUCCESS 0
1454#define BGP_ERR_INVALID_VALUE -1
1455#define BGP_ERR_INVALID_FLAG -2
1456#define BGP_ERR_INVALID_AS -3
1457#define BGP_ERR_INVALID_BGP -4
1458#define BGP_ERR_PEER_GROUP_MEMBER -5
1459#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1460#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1461#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1462#define BGP_ERR_PEER_GROUP_MISMATCH -9
1463#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1464#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1465#define BGP_ERR_AS_MISMATCH -12
1466#define BGP_ERR_PEER_FLAG_CONFLICT -13
1467#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1468#define BGP_ERR_PEER_FILTER_CONFLICT -15
1469#define BGP_ERR_NOT_INTERNAL_PEER -16
1470#define BGP_ERR_REMOVE_PRIVATE_AS -17
1471#define BGP_ERR_AF_UNCONFIGURED -18
1472#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1473#define BGP_ERR_INSTANCE_MISMATCH -20
1474#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1475#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1476#define BGP_ERR_TCPSIG_FAILED -23
1477#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1478#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1479#define BGP_ERR_NO_INTERFACE_CONFIG -26
1480#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1481#define BGP_ERR_AS_OVERRIDE -28
1482#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1483#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1484#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1485#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1486#define BGP_ERR_MAX -33
63fa10b5 1487#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1488#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1489
3f9c7369
DS		 1490/*
1491 * Enumeration of different policy kinds a peer can be configured with.
1492 */
d62a17ae 1493typedef enum {
1494 BGP_POLICY_ROUTE_MAP,
1495 BGP_POLICY_FILTER_LIST,
1496 BGP_POLICY_PREFIX_LIST,
1497 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1498} bgp_policy_type_e;
1499
dcc68b5e
MS		 1500/* peer_flag_change_type. */
1501enum peer_change_type {
1502 peer_change_none,
1503 peer_change_reset,
1504 peer_change_reset_in,
1505 peer_change_reset_out,
1506};
1507
718e3744 1508extern struct bgp_master *bm;
37fe7731 1509extern unsigned int multipath_num;
718e3744 1510
718e3744 1511/* Prototypes. */
d62a17ae 1512extern void bgp_terminate(void);
1513extern void bgp_reset(void);
1514extern time_t bgp_clock(void);
1515extern void bgp_zclient_reset(void);
d62a17ae 1516extern struct bgp *bgp_get_default(void);
1517extern struct bgp *bgp_lookup(as_t, const char *);
1518extern struct bgp *bgp_lookup_by_name(const char *);
1519extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
e2f3a930
T		 1520extern struct bgp *bgp_get_evpn(void);
1521extern void bgp_set_evpn(struct bgp *bgp);
d62a17ae 1522extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1523extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1524extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1525extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1526extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1527extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1528extern struct peer_group *peer_group_get(struct bgp *, const char *);
1529extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1530 union sockunion *,
1531 struct peer_group *);
1532extern struct prefix *
1533peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1534extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1535 struct prefix *,
1536 struct prefix **);
1537extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1538 union sockunion *);
28066f4b
DS		 1539
1540/*
1541 * Peers are incredibly easy to memory leak
1542 * due to the various ways that they are actually used
1543 * Provide some functionality to debug locks and unlocks
1544 */
1545extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1546extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1547#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1548#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1549
d62a17ae 1550extern bgp_peer_sort_t peer_sort(struct peer *peer);
1551extern int peer_active(struct peer *);
1552extern int peer_active_nego(struct peer *);
1553extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1554extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1555 as_t, as_t, int, afi_t, safi_t,
1556 struct peer_group *);
1557extern struct peer *peer_create_accept(struct bgp *);
1558extern void peer_xfer_config(struct peer *dst, struct peer *src);
94d4c685
DS		 1559extern char *peer_uptime(time_t uptime2, char *buf, size_t len, bool use_json,
1560 json_object *json);
856ca177 1561
d62a17ae 1562extern int bgp_config_write(struct vty *);
6b0655a2 1563
d62a17ae 1564extern void bgp_master_init(struct thread_master *master);
718e3744 1565
f533be73 1566extern void bgp_init(unsigned short instance);
419dfe6a 1567extern void bgp_pthreads_run(void);
2d4ee774 1568extern void bgp_pthreads_finish(void);
d62a17ae 1569extern void bgp_route_map_init(void);
1570extern void bgp_session_reset(struct peer *);
718e3744 1571
d62a17ae 1572extern int bgp_option_set(int);
1573extern int bgp_option_unset(int);
1574extern int bgp_option_check(int);
718e3744 1575
d62a17ae 1576extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1577extern void bgp_instance_up(struct bgp *);
1578extern void bgp_instance_down(struct bgp *);
1579extern int bgp_delete(struct bgp *);
718e3744 1580
e5619c28
PG		 1581extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1582 vrf_id_t old_vrf_id, bool create);
1583
d62a17ae 1584extern int bgp_flag_set(struct bgp *, int);
1585extern int bgp_flag_unset(struct bgp *, int);
1586extern int bgp_flag_check(struct bgp *, int);
718e3744 1587
d62a17ae 1588extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1589extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1590
d62a17ae 1591extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1592extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1593
d62a17ae 1594extern int bgp_confederation_id_set(struct bgp *, as_t);
1595extern int bgp_confederation_id_unset(struct bgp *);
1596extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1597
d62a17ae 1598extern int bgp_confederation_peers_add(struct bgp *, as_t);
1599extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1600
d7c0a89a 1601extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime);
d62a17ae 1602extern int bgp_timers_unset(struct bgp *);
718e3744 1603
d7c0a89a 1604extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1605extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1606
d7c0a89a 1607extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1608extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1609
d62a17ae 1610extern int bgp_listen_limit_set(struct bgp *, int);
1611extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1612
d62a17ae 1613extern int bgp_update_delay_active(struct bgp *);
1614extern int bgp_update_delay_configured(struct bgp *);
318cac96 1615extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1616extern void peer_as_change(struct peer *, as_t, int);
1617extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1618 int, afi_t, safi_t);
1619extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1620extern int peer_delete(struct peer *peer);
7f98269f 1621extern int peer_notify_unconfig(struct peer *peer);
d62a17ae 1622extern int peer_group_delete(struct peer_group *);
1623extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1624extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
7f98269f 1625extern int peer_group_notify_unconfig(struct peer_group *group);
718e3744 1626
d62a17ae 1627extern int peer_activate(struct peer *, afi_t, safi_t);
1628extern int peer_deactivate(struct peer *, afi_t, safi_t);
1629extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1630
d62a17ae 1631extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1632 struct peer_group *, as_t *);
718e3744 1633
d7c0a89a
QY		 1634extern int peer_flag_set(struct peer *, uint32_t);
1635extern int peer_flag_unset(struct peer *, uint32_t);
9fb964de 1636extern void peer_flag_inherit(struct peer *peer, uint32_t flag);
718e3744 1637
d7c0a89a
QY		 1638extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1639extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1640extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
cf9ac8bf
PM		 1641extern void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi,
1642 uint32_t flag);
dcc68b5e
MS		 1643extern void peer_change_action(struct peer *peer, afi_t afi, safi_t safi,
1644 enum peer_change_type type);
718e3744 1645
d62a17ae 1646extern int peer_ebgp_multihop_set(struct peer *, int);
1647extern int peer_ebgp_multihop_unset(struct peer *);
1648extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1649
d62a17ae 1650extern int peer_description_set(struct peer *, const char *);
1651extern int peer_description_unset(struct peer *);
718e3744 1652
d62a17ae 1653extern int peer_update_source_if_set(struct peer *, const char *);
1654extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1655extern int peer_update_source_unset(struct peer *);
718e3744 1656
1de27621
DA		 1657extern int peer_default_originate_set(struct peer *peer, afi_t afi, safi_t safi,
1658 const char *rmap,
1659 struct route_map *route_map);
d62a17ae 1660extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1661
d7c0a89a 1662extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1663extern int peer_port_unset(struct peer *);
718e3744 1664
d7c0a89a 1665extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1666extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1667
d7c0a89a
QY		 1668extern int peer_timers_set(struct peer *, uint32_t keepalive,
1669 uint32_t holdtime);
d62a17ae 1670extern int peer_timers_unset(struct peer *);
718e3744 1671
d7c0a89a 1672extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1673extern int peer_timers_connect_unset(struct peer *);
718e3744 1674
d7c0a89a 1675extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1676extern int peer_advertise_interval_unset(struct peer *);
718e3744 1677
d62a17ae 1678extern void peer_interface_set(struct peer *, const char *);
1679extern void peer_interface_unset(struct peer *);
718e3744 1680
d62a17ae 1681extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1682extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1683
d62a17ae 1684extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1685extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1686
d62a17ae 1687extern int peer_local_as_set(struct peer *, as_t, int, int);
1688extern int peer_local_as_unset(struct peer *);
718e3744 1689
d62a17ae 1690extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1691 const char *);
1692extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1693
d62a17ae 1694extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1695extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1696
1de27621
DA		 1697extern int peer_route_map_set(struct peer *peer, afi_t afi, safi_t safi, int,
1698 const char *name, struct route_map *route_map);
d62a17ae 1699extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1700
1de27621
DA		 1701extern int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi,
1702 const char *name,
1703 struct route_map *route_map);
0df7c91f 1704
d62a17ae 1705extern int peer_password_set(struct peer *, const char *);
1706extern int peer_password_unset(struct peer *);
0df7c91f 1707
d62a17ae 1708extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1709
d7c0a89a
QY		 1710extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1711 uint8_t, int, uint16_t);
d62a17ae 1712extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1713
d62a17ae 1714extern int peer_clear(struct peer *, struct listnode **);
1715extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1716
d62a17ae 1717extern int peer_ttl_security_hops_set(struct peer *, int);
1718extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1719
d62a17ae 1720extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1721extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1722
d62a17ae 1723extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1724extern void bgp_route_map_terminate(void);
16286195 1725
d62a17ae 1726extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1727
5c525538 1728extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1729 afi_t *afi, safi_t *safi);
1730extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1731 iana_afi_t *pkt_afi,
1732 iana_safi_t *pkt_safi);
9cabb64b 1733
d62a17ae 1734extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1735extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1736extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1737
ffd0c037 1738extern void bgp_close(void);
92375c91
JB		 1739extern void bgp_free(struct bgp *);
1740
1741static inline struct bgp *bgp_lock(struct bgp *bgp)
1742{
1743 bgp->lock++;
1744 return bgp;
1745}
1746
1747static inline void bgp_unlock(struct bgp *bgp)
1748{
1749 assert(bgp->lock > 0);
1750 if (--bgp->lock == 0)
1751 bgp_free(bgp);
1752}
ffd0c037 1753
d62a17ae 1754static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1755{
d62a17ae 1756 switch (afi) {
1757 case AFI_IP:
1758 switch (safi) {
1759 case SAFI_UNICAST:
1760 return BGP_AF_IPV4_UNICAST;
1761 break;
1762 case SAFI_MULTICAST:
1763 return BGP_AF_IPV4_MULTICAST;
1764 break;
1765 case SAFI_LABELED_UNICAST:
1766 return BGP_AF_IPV4_LBL_UNICAST;
1767 break;
1768 case SAFI_MPLS_VPN:
1769 return BGP_AF_IPV4_VPN;
1770 break;
1771 case SAFI_ENCAP:
1772 return BGP_AF_IPV4_ENCAP;
1773 break;
7c40bf39 1774 case SAFI_FLOWSPEC:
1775 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1776 default:
1777 return BGP_AF_MAX;
1778 break;
1779 }
1780 break;
1781 case AFI_IP6:
1782 switch (safi) {
1783 case SAFI_UNICAST:
1784 return BGP_AF_IPV6_UNICAST;
1785 break;
1786 case SAFI_MULTICAST:
1787 return BGP_AF_IPV6_MULTICAST;
1788 break;
1789 case SAFI_LABELED_UNICAST:
1790 return BGP_AF_IPV6_LBL_UNICAST;
1791 break;
1792 case SAFI_MPLS_VPN:
1793 return BGP_AF_IPV6_VPN;
1794 break;
1795 case SAFI_ENCAP:
1796 return BGP_AF_IPV6_ENCAP;
1797 break;
7c40bf39 1798 case SAFI_FLOWSPEC:
1799 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1800 default:
1801 return BGP_AF_MAX;
1802 break;
1803 }
1804 break;
1805 case AFI_L2VPN:
1806 switch (safi) {
1807 case SAFI_EVPN:
1808 return BGP_AF_L2VPN_EVPN;
1809 break;
1810 default:
1811 return BGP_AF_MAX;
1812 break;
1813 }
3f9c7369 1814 default:
d62a17ae 1815 return BGP_AF_MAX;
1816 break;
3f9c7369 1817 }
3f9c7369
DS		 1818}
1819
c8560b44 1820/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1821static inline int peer_group_active(struct peer *peer)
3f9c7369 1822{
d62a17ae 1823 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1824 return 1;
1825 return 0;
3f9c7369
DS		 1826}
1827
1828/* If peer is negotiated at least one address family return 1. */
d62a17ae 1829static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1830{
d62a17ae 1831 if (peer->afc_nego[afi][SAFI_UNICAST]
1832 || peer->afc_nego[afi][SAFI_MULTICAST]
1833 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1834 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1835 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1836 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1837 || peer->afc_nego[afi][SAFI_EVPN])
1838 return 1;
1839 return 0;
3f9c7369
DS		 1840}
1841
f14e6fdb 1842/* If at least one address family activated for group, return 1. */
d62a17ae 1843static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1844{
d62a17ae 1845 struct peer *peer = group->conf;
1846
1847 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1848 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 1849 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 1850 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1851 || peer->afc[AFI_IP6][SAFI_UNICAST]
1852 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1853 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1854 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1855 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 1856 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 1857 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1858 return 1;
1859 return 0;
f14e6fdb
DS		 1860}
1861
d62a17ae 1862static inline char *timestamp_string(time_t ts)
3f9c7369 1863{
d62a17ae 1864 time_t tbuf;
1865 tbuf = time(NULL) - (bgp_clock() - ts);
1866 return ctime(&tbuf);
3f9c7369
DS		 1867}
1868
d62a17ae 1869static inline int peer_established(struct peer *peer)
3f9c7369 1870{
d62a17ae 1871 if (peer->status == Established)
1872 return 1;
1873 return 0;
3f9c7369
DS		 1874}
1875
d62a17ae 1876static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1877{
d62a17ae 1878 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1879}
1880
d62a17ae 1881static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1882{
d62a17ae 1883 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1884}
1885
d1be1f08 1886/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1887static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1888{
d62a17ae 1889 struct vrf *vrf;
d1be1f08 1890
d62a17ae 1891 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1892 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1893 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1894 vrf = vrf_lookup_by_name(bgp->name);
1895 else
1896 vrf = NULL;
d1be1f08 1897
d62a17ae 1898 return vrf;
d1be1f08 1899}
1900
1901/* Link BGP instance to VRF. */
d62a17ae 1902static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1903{
d62a17ae 1904 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1905 if (vrf->info != (void *)bgp)
1906 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1907}
1908
1909/* Unlink BGP instance from VRF. */
d62a17ae 1910static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1911{
d62a17ae 1912 if (vrf->info == (void *)bgp) {
1913 vrf->info = NULL;
1914 bgp_unlock(bgp);
1915 }
1916 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1917}
1918
401d56cc 1919extern void bgp_unset_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1920
1921/* For benefit of rfapi */
d62a17ae 1922extern struct peer *peer_new(struct bgp *bgp);
00d252cb 1923#endif /* _QUAGGA_BGPD_H */
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