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bgpd: Remove `[no] bgp config-type <cisco|zebra>`
[mirror_frr.git] / bgpd / bgpd.h
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718e3744 1/* BGP message definition header.
896014f4
DL		 2 * Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
718e3744 20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
19df7279 24#include "qobj.h"
d3ecc69e
QY		 25#include <pthread.h>
26
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)
718e3744 137#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 138#define BGP_OPT_NO_LISTEN (1 << 3)
0b014ea6 139#define BGP_OPT_NO_ZEBRA (1 << 4)
3f9c7369 140
d62a17ae 141 uint64_t updgrp_idspace;
142 uint64_t subgrp_idspace;
5fe9f963 143
d62a17ae 144 /* timer to dampen route map changes */
145 struct thread *t_rmap_update; /* Handle route map updates */
d7c0a89a 146 uint32_t rmap_update_timer; /* Route map update timer */
5fe9f963 147#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 148
e9eb5f63 149 /* Id space for automatic RD derivation for an EVI/VRF */
150 bitfield_t rd_idspace;
151
955bfd98
PZ		 152 /* dynamic mpls label allocation pool */
153 struct labelpool labelpool;
154
e2f3a930
T		 155 /* BGP-EVPN VRF ID. Defaults to default VRF (if any) */
156 struct bgp* bgp_evpn;
157
97b4a0ec 158 bool terminating; /* global flag that sigint terminate seen */
d62a17ae 159 QOBJ_FIELDS
718e3744 160};
19df7279 161DECLARE_QOBJ_TYPE(bgp_master)
718e3744 162
73ac8160 163/* BGP route-map structure. */
d62a17ae 164struct bgp_rmap {
165 char *name;
166 struct route_map *map;
73ac8160
DS		 167};
168
d62a17ae 169struct bgp_redist {
d7c0a89a 170 unsigned short instance;
7c8ff89e 171
d62a17ae 172 /* BGP redistribute metric configuration. */
d7c0a89a
QY		 173 uint8_t redist_metric_flag;
174 uint32_t redist_metric;
7c8ff89e 175
d62a17ae 176 /* BGP redistribute route-map. */
177 struct bgp_rmap rmap;
7c8ff89e
DS		 178};
179
ddb5b488
PZ		 180typedef enum {
181 BGP_VPN_POLICY_DIR_FROMVPN = 0,
182 BGP_VPN_POLICY_DIR_TOVPN = 1,
183 BGP_VPN_POLICY_DIR_MAX = 2
184} vpn_policy_direction_t;
185
e70e9f8e
PZ		 186struct vpn_policy {
187 struct bgp *bgp; /* parent */
188 afi_t afi;
189 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
190 struct ecommunity *import_redirect_rtlist;
191 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
192 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
193
194 /* should be mpls_label_t? */
195 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
196 uint32_t tovpn_zebra_vrf_label_last_sent;
197 struct prefix_rd tovpn_rd;
198 struct prefix tovpn_nexthop; /* unset => set to 0 */
199 uint32_t flags;
200#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
201#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
202#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 203
1d4e8b0d
DS		 204 /*
205 * If we are importing another vrf into us keep a list of
206 * vrf names that are being imported into us.
207 */
12a844a5 208 struct list *import_vrf;
1d4e8b0d
DS		 209
210 /*
211 * if we are being exported to another vrf keep a list of
212 * vrf names that we are being exported to.
213 */
12a844a5 214 struct list *export_vrf;
e70e9f8e
PZ		 215};
216
ad4cbda1 217/*
218 * Type of 'struct bgp'.
219 * - Default: The default instance
220 * - VRF: A specific (non-default) VRF
221 * - View: An instance used for route exchange
222 * The "default" instance is treated separately to simplify the code. Note
223 * that if deployed in a Multi-VRF environment, it may not exist.
224 */
d62a17ae 225enum bgp_instance_type {
226 BGP_INSTANCE_TYPE_DEFAULT,
227 BGP_INSTANCE_TYPE_VRF,
228 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 229};
230
718e3744 231/* BGP instance structure. */
d62a17ae 232struct bgp {
233 /* AS number of this BGP instance. */
234 as_t as;
235
236 /* Name of this BGP instance. */
237 char *name;
3572fb26 238 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 239
240 /* Type of instance and VRF id. */
241 enum bgp_instance_type inst_type;
242 vrf_id_t vrf_id;
243
244 /* Reference count to allow peer_delete to finish after bgp_delete */
245 int lock;
246
247 /* Self peer. */
248 struct peer *peer_self;
249
250 /* BGP peer. */
251 struct list *peer;
252 struct hash *peerhash;
253
254 /* BGP peer group. */
255 struct list *group;
256
257 /* The maximum number of BGP dynamic neighbors that can be created */
258 int dynamic_neighbors_limit;
259
260 /* The current number of BGP dynamic neighbors */
261 int dynamic_neighbors_count;
262
263 struct hash *update_groups[BGP_AF_MAX];
264
265 /*
266 * Global statistics for update groups.
267 */
268 struct {
d7c0a89a
QY		 269 uint32_t join_events;
270 uint32_t prune_events;
271 uint32_t merge_events;
272 uint32_t split_events;
273 uint32_t updgrp_switch_events;
274 uint32_t peer_refreshes_combined;
275 uint32_t adj_count;
276 uint32_t merge_checks_triggered;
277
278 uint32_t updgrps_created;
279 uint32_t updgrps_deleted;
280 uint32_t subgrps_created;
281 uint32_t subgrps_deleted;
d62a17ae 282 } update_group_stats;
283
284 /* BGP configuration. */
d7c0a89a 285 uint16_t config;
c2d58d6d 286#define BGP_CONFIG_CLUSTER_ID (1 << 0)
287#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 288
d62a17ae 289 /* BGP router identifier. */
290 struct in_addr router_id;
291 struct in_addr router_id_static;
292 struct in_addr router_id_zebra;
718e3744 293
d62a17ae 294 /* BGP route reflector cluster ID. */
295 struct in_addr cluster_id;
718e3744 296
d62a17ae 297 /* BGP confederation information. */
298 as_t confed_id;
299 as_t *confed_peers;
300 int confed_peers_cnt;
718e3744 301
d62a17ae 302 struct thread
303 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 304
d7c0a89a 305 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 306#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY		 307 uint32_t maxmed_onstartup_value; /* Max-med value when active on
308 start-up */
d62a17ae 309 struct thread
310 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 311 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 312
d7c0a89a 313 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 314#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY		 315 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
316 */
abc920f8
DS		 317#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
318
d7c0a89a
QY		 319 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
320 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 321
322 /* BGP update delay on startup */
323 struct thread *t_update_delay;
324 struct thread *t_establish_wait;
d7c0a89a
QY		 325 uint8_t update_delay_over;
326 uint8_t main_zebra_update_hold;
327 uint8_t main_peers_update_hold;
328 uint16_t v_update_delay;
329 uint16_t v_establish_wait;
d62a17ae 330 char update_delay_begin_time[64];
331 char update_delay_end_time[64];
332 char update_delay_zebra_resume_time[64];
333 char update_delay_peers_resume_time[64];
d7c0a89a
QY		 334 uint32_t established;
335 uint32_t restarted_peers;
336 uint32_t implicit_eors;
337 uint32_t explicit_eors;
f188f2c4
DS		 338#define BGP_UPDATE_DELAY_DEF 0
339#define BGP_UPDATE_DELAY_MIN 0
340#define BGP_UPDATE_DELAY_MAX 3600
341
d62a17ae 342 /* BGP flags. */
d7c0a89a 343 uint32_t flags;
718e3744 344#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
345#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
346#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
347#define BGP_FLAG_MED_CONFED (1 << 3)
348#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
349#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
718e3744 350#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
351#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
352#define BGP_FLAG_IMPORT_CHECK (1 << 9)
353#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 354#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 355#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 356#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 357#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 358#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 359#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 360#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 361#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 362#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 363#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 364#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 365
d62a17ae 366 /* BGP Per AF flags */
d7c0a89a 367 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 368#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 369/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK		 370#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
371#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
372#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
373#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
374/* import/export between address families */
375#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
376#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
377/* vrf-route leaking flags */
378#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
379#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
154faa50 380
210ec2a0
AS		 381 /* BGP per AF peer count */
382 uint32_t af_peer_count[AFI_MAX][SAFI_MAX];
383
d62a17ae 384 /* Route table for next-hop lookup cache. */
385 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 386
d62a17ae 387 /* Route table for import-check */
388 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 389
d62a17ae 390 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 391
d62a17ae 392 struct hash *address_hash;
6aeb9e78 393
db0e1937
MK		 394 /* DB for all local tunnel-ips - used mainly for martian checks
395 Currently it only has all VxLan tunnel IPs*/
396 struct hash *tip_hash;
397
d62a17ae 398 /* Static route configuration. */
399 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 400
d62a17ae 401 /* Aggregate address configuration. */
402 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 403
d62a17ae 404 /* BGP routing information base. */
405 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 406
d62a17ae 407 /* BGP table route-map. */
408 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 409
d62a17ae 410 /* BGP redistribute configuration. */
411 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 412
318cac96 413 /* Allocate MPLS labels */
d7c0a89a 414 uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
318cac96 415
f3d32faa
PG		 416 /* Allocate hash entries to store policy routing information
417 * The hash are used to host pbr rules somewhere.
418 * Actually, pbr will only be used by flowspec
419 * those hash elements will have relationship together as
420 * illustrated in below diagram:
421 *
422 * pbr_action a <----- pbr_match i <--- pbr_match_entry 1..n
423 * <----- pbr_match j <--- pbr_match_entry 1..m
27e376d4 424 * <----- pbr_rule k
f3d32faa
PG		 425 *
426 * - here in BGP structure, the list of match and actions will
427 * stand for the list of ipset sets, and table_ids in the kernel
428 * - the arrow above between pbr_match and pbr_action indicate
429 * that a backpointer permits match to find the action
430 * - the arrow betwen match_entry and match is a hash list
431 * contained in match, that lists the whole set of entries
432 */
433 struct hash *pbr_match_hash;
27e376d4 434 struct hash *pbr_rule_hash;
f3d32faa
PG		 435 struct hash *pbr_action_hash;
436
d62a17ae 437 /* timer to re-evaluate neighbor default-originate route-maps */
438 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 439#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
440
d62a17ae 441 /* BGP distance configuration. */
d7c0a89a
QY		 442 uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
443 uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
444 uint8_t distance_local[AFI_MAX][SAFI_MAX];
d62a17ae 445
446 /* BGP default local-preference. */
d7c0a89a 447 uint32_t default_local_pref;
d62a17ae 448
449 /* BGP default subgroup pkt queue max */
d7c0a89a 450 uint32_t default_subgroup_pkt_queue_max;
d62a17ae 451
452 /* BGP default timer. */
d7c0a89a
QY		 453 uint32_t default_holdtime;
454 uint32_t default_keepalive;
d62a17ae 455
456 /* BGP graceful restart */
d7c0a89a
QY		 457 uint32_t restart_time;
458 uint32_t stalepath_time;
d62a17ae 459
460 /* Maximum-paths configuration */
461 struct bgp_maxpaths_cfg {
d7c0a89a
QY		 462 uint16_t maxpaths_ebgp;
463 uint16_t maxpaths_ibgp;
464 uint16_t ibgp_flags;
5e242b0d 465#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 466 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 467
555e09d4
QY		 468 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
469 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
470
37a333fe
QY		 471 /* Automatic coalesce adjust on/off */
472 bool heuristic_coalesce;
14b8641a
QY		 473 /* Actual coalesce time */
474 uint32_t coalesce_time;
adbac85e 475
f26845f9
QY		 476 /* Auto-shutdown new peers */
477 bool autoshutdown;
478
dcc68b5e 479 struct bgp_addpath_bgp_data tx_addpath;
65efcfce
LB		 480
481#if ENABLE_BGP_VNC
d62a17ae 482 struct rfapi_cfg *rfapi_cfg;
483 struct rfapi *rfapi;
65efcfce 484#endif
19df7279 485
d62a17ae 486 /* EVPN related information */
14c1a7bf 487
d62a17ae 488 /* EVI hash table */
489 struct hash *vnihash;
14c1a7bf 490
1a98c087
MK		 491 /* EVPN enable - advertise gateway macip routes */
492 int advertise_gw_macip;
493
d62a17ae 494 /* EVPN enable - advertise local VNIs and their MACs etc. */
495 int advertise_all_vni;
14c1a7bf 496
9dac9fc8
DA		 497 /* RFC 8212 - prevent route leaks. */
498 int ebgp_requires_policy;
499#define DEFAULT_EBGP_POLICY_DISABLED 0
500#define DEFAULT_EBGP_POLICY_ENABLED 1
501
85c8d83b
CS		 502 struct bgp_evpn_info *evpn_info;
503
bf1061d8
VB		 504 /* EVPN - use RFC 8365 to auto-derive RT */
505 int advertise_autort_rfc8365;
506
fd069644
DS		 507 /*
508 * Flooding mechanism for BUM packets for VxLAN-EVPN.
509 */
510 enum vxlan_flood_control vxlan_flood_ctrl;
511
d62a17ae 512 /* Hash table of Import RTs to EVIs */
513 struct hash *import_rt_hash;
14c1a7bf 514
10ebe1ab
MK		 515 /* Hash table of VRF import RTs to VRFs */
516 struct hash *vrf_import_rt_hash;
517
fe1dc5a3
MK		 518 /* L3-VNI corresponding to this vrf */
519 vni_t l3vni;
520
521 /* router-mac to be used in mac-ip routes for this vrf */
522 struct ethaddr rmac;
523
b67a60d2 524 /* originator ip - to be used as NH for type-5 routes */
525 struct in_addr originator_ip;
526
0483af6e 527 /* SVI associated with the L3-VNI corresponding to this vrf */
528 ifindex_t l3vni_svi_ifindex;
529
fe1dc5a3
MK		 530 /* vrf flags */
531 uint32_t vrf_flags;
676f83b9 532#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 533#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
534#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
535#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK		 536#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
537
676f83b9 538
539 /* unique ID for auto derivation of RD for this vrf */
540 uint16_t vrf_rd_id;
541
92708db6 542 /* Automatically derived RD for this VRF */
543 struct prefix_rd vrf_prd_auto;
544
676f83b9 545 /* RD for this VRF */
546 struct prefix_rd vrf_prd;
c581d8b0
MK		 547
548 /* import rt list for the vrf instance */
549 struct list *vrf_import_rtl;
550
551 /* export rt list for the vrf instance */
552 struct list *vrf_export_rtl;
fe1dc5a3 553
6a8657d0
MK		 554 /* list of corresponding l2vnis (struct bgpevpn) */
555 struct list *l2vnis;
556
53c84f78
MK		 557 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
558 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
559
e70e9f8e 560 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 561
4762c213
PG		 562 struct bgp_pbr_config *bgp_pbr_cfg;
563
50f74cf1 564 /* local esi hash table */
565 struct hash *esihash;
566
36dc7588 567 /* Count of peers in established state */
568 uint32_t established_peers;
569
d62a17ae 570 QOBJ_FIELDS
718e3744 571};
19df7279 572DECLARE_QOBJ_TYPE(bgp)
718e3744 573
2a3d5731 574#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 575
d62a17ae 576#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
577 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
578 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
579 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 580
718e3744 581/* BGP peer-group support. */
d62a17ae 582struct peer_group {
583 /* Name of the peer-group. */
584 char *name;
718e3744 585
d62a17ae 586 /* Pointer to BGP. */
587 struct bgp *bgp;
718e3744 588
d62a17ae 589 /* Peer-group client list. */
590 struct list *peer;
f14e6fdb 591
d62a17ae 592 /** Dynamic neighbor listening ranges */
593 struct list *listen_range[AFI_MAX];
594
595 /* Peer-group config */
596 struct peer *conf;
718e3744 597};
598
599/* BGP Notify message format. */
d62a17ae 600struct bgp_notify {
d7c0a89a
QY		 601 uint8_t code;
602 uint8_t subcode;
d62a17ae 603 char *data;
604 bgp_size_t length;
d7c0a89a 605 uint8_t *raw_data;
718e3744 606};
607
608/* Next hop self address. */
d62a17ae 609struct bgp_nexthop {
610 struct interface *ifp;
611 struct in_addr v4;
612 struct in6_addr v6_global;
613 struct in6_addr v6_local;
718e3744 614};
615
a82478b9
DS		 616/* BGP addpath values */
617#define BGP_ADDPATH_RX 1
618#define BGP_ADDPATH_TX 2
619#define BGP_ADDPATH_ID_LEN 4
620
adbac85e
DW		 621#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
622
3f54c705 623/* Route map direction */
2a3d5731
DW		 624#define RMAP_IN 0
625#define RMAP_OUT 1
626#define RMAP_MAX 2
fee0f4c6 627
65efcfce
LB		 628#include "filter.h"
629
718e3744 630/* BGP filter structure. */
d62a17ae 631struct bgp_filter {
632 /* Distribute-list. */
633 struct {
634 char *name;
635 struct access_list *alist;
636 } dlist[FILTER_MAX];
637
638 /* Prefix-list. */
639 struct {
640 char *name;
641 struct prefix_list *plist;
642 } plist[FILTER_MAX];
643
644 /* Filter-list. */
645 struct {
646 char *name;
647 struct as_list *aslist;
648 } aslist[FILTER_MAX];
649
650 /* Route-map. */
651 struct {
652 char *name;
653 struct route_map *map;
654 } map[RMAP_MAX];
655
656 /* Unsuppress-map. */
657 struct {
658 char *name;
659 struct route_map *map;
660 } usmap;
718e3744 661};
662
6d85b15b
JBD		 663/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
664 a peer who's AS is part of our Confederation. */
d62a17ae 665typedef enum {
faa16034
DS		 666 BGP_PEER_UNSPECIFIED,
667 BGP_PEER_IBGP,
d62a17ae 668 BGP_PEER_EBGP,
669 BGP_PEER_INTERNAL,
670 BGP_PEER_CONFED,
6d85b15b
JBD		 671} bgp_peer_sort_t;
672
d6661008
DS		 673/* BGP message header and packet size. */
674#define BGP_MARKER_SIZE 16
675#define BGP_HEADER_SIZE 19
676#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 677#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 678
3f9c7369
DS		 679/*
680 * Trigger delay for bgp_announce_route().
681 */
682#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
683#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
684
d62a17ae 685struct peer_af {
686 /* back pointer to the peer */
687 struct peer *peer;
3f9c7369 688
d62a17ae 689 /* which subgroup the peer_af belongs to */
690 struct update_subgroup *subgroup;
3f9c7369 691
d62a17ae 692 /* for being part of an update subgroup's peer list */
693 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 694
d62a17ae 695 /* for being part of a packet's peer list */
696 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 697
d62a17ae 698 struct bpacket *next_pkt_to_send;
3f9c7369 699
d62a17ae 700 /*
701 * Trigger timer for bgp_announce_route().
702 */
703 struct thread *t_announce_route;
3f9c7369 704
d62a17ae 705 afi_t afi;
706 safi_t safi;
707 int afid;
3f9c7369
DS		 708};
709
718e3744 710/* BGP neighbor structure. */
d62a17ae 711struct peer {
712 /* BGP structure. */
713 struct bgp *bgp;
714
715 /* reference count, primarily to allow bgp_process'ing of route_node's
716 * to be done after a struct peer is deleted.
717 *
718 * named 'lock' for hysterical reasons within Quagga.
719 */
720 int lock;
721
722 /* BGP peer group. */
723 struct peer_group *group;
724 uint64_t version[AFI_MAX][SAFI_MAX];
725
726 /* BGP peer_af structures, per configured AF on this peer */
727 struct peer_af *peer_af_array[BGP_AF_MAX];
728
729 /* Peer's remote AS number. */
730 int as_type;
731 as_t as;
732
733 /* Peer's local AS number. */
734 as_t local_as;
735
736 bgp_peer_sort_t sort;
737
738 /* Peer's Change local AS number. */
739 as_t change_local_as;
740
741 /* Remote router ID. */
742 struct in_addr remote_id;
743
744 /* Local router ID. */
745 struct in_addr local_id;
746
747 /* Packet receive and send buffer. */
424ab01d
QY		 748 pthread_mutex_t io_mtx; // guards ibuf, obuf
749 struct stream_fifo *ibuf; // packets waiting to be processed
750 struct stream_fifo *obuf; // packets waiting to be written
751
74ffbfe6
QY		 752 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
753 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 754
755 struct stream *curr; // the current packet being parsed
d62a17ae 756
757 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 758 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 759 * actual packet is then constructed by concatenating the two.
760 */
761 struct stream *scratch;
762
763 /* the doppelganger peer structure, due to dual TCP conn setup */
764 struct peer *doppelganger;
765
766 /* Status of the peer. */
767 int status;
768 int ostatus;
769
770 /* FSM events, stored for debug purposes.
771 * Note: uchar used for reduced memory usage.
772 */
773 unsigned char cur_event;
774 unsigned char last_event;
775 unsigned char last_major_event;
776
777 /* Peer index, used for dumping TABLE_DUMP_V2 format */
778 uint16_t table_dump_index;
779
780 /* Peer information */
781 int fd; /* File descriptor */
782 int ttl; /* TTL of TCP connection to the peer. */
783 int rtt; /* Estimated round-trip-time from TCP_INFO */
784 int gtsm_hops; /* minimum hopcount to peer */
785 char *desc; /* Description of the peer. */
786 unsigned short port; /* Destination port for peer */
787 char *host; /* Printable address of the peer. */
788 union sockunion su; /* Sockunion address of the peer. */
a80beece 789#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 790 time_t uptime; /* Last Up/Down time */
791 time_t readtime; /* Last read time */
792 time_t resettime; /* Last reset time */
793
d62a17ae 794 char *conf_if; /* neighbor interface config name. */
795 struct interface *ifp; /* corresponding interface */
796 char *ifname; /* bind interface name. */
797 char *update_if;
798 union sockunion *update_source;
799
800 union sockunion *su_local; /* Sockunion of local address. */
801 union sockunion *su_remote; /* Sockunion of remote address. */
802 int shared_network; /* Is this peer shared same network. */
803 struct bgp_nexthop nexthop; /* Nexthop */
804
805 /* Peer address family configuration. */
d7c0a89a
QY		 806 uint8_t afc[AFI_MAX][SAFI_MAX];
807 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
808 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
809 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 810
811 /* Capability flags (reset in bgp_stop) */
d7c0a89a 812 uint32_t cap;
718e3744 813#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
814#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
815#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
816#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
817#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 818#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
819#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 820#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
821#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 822#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
823#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 824#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
825#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 826#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
827#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 828#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
829#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 830
d62a17ae 831 /* Capability flags (reset in bgp_stop) */
d7c0a89a 832 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 833#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
834#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
835#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
836#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
837#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
838#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 839#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
840#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 841#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
842#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
843#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
844#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 845#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
846#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
847#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 848
d62a17ae 849 /* Global configuration flags. */
9fb964de
PM		 850 /*
851 * Parallel array to flags that indicates whether each flag originates
852 * from a peer-group or if it is config that is specific to this
853 * individual peer. If a flag is set independent of the peer-group, the
854 * same bit should be set here. If this peer is a peer-group, this
855 * memory region should be all zeros.
856 *
857 * The assumption is that the default state for all flags is unset,
858 * so if a flag is unset, the corresponding override flag is unset too.
859 * However if a flag is set, the corresponding override flag is set.
860 */
861 uint32_t flags_override;
862 /*
863 * Parallel array to flags that indicates whether the default behavior
864 * of *flags_override* should be inverted. If a flag is unset and the
865 * corresponding invert flag is set, the corresponding override flag
866 * would be set. However if a flag is set and the corresponding invert
867 * flag is unset, the corresponding override flag would be unset.
868 *
869 * This can be used for attributes like *send-community*, which are
870 * implicitely enabled and have to be disabled explicitely, compared to
871 * 'normal' attributes like *next-hop-self* which are implicitely set.
872 *
873 * All operations dealing with flags should apply the following boolean
874 * logic to keep the internal flag system in a sane state:
875 *
876 * value=0 invert=0 Inherit flag if member, otherwise unset flag
877 * value=0 invert=1 Unset flag unconditionally
878 * value=1 invert=0 Set flag unconditionally
879 * value=1 invert=1 Inherit flag if member, otherwise set flag
880 *
881 * Contrary to the implementation of *flags_override*, the flag
882 * inversion state can be set either on the peer OR the peer *and* the
883 * peer-group. This was done on purpose, as the inversion state of a
884 * flag can be determined on either the peer or the peer-group.
885 *
886 * Example: Enabling the cisco configuration mode inverts all flags
887 * related to *send-community* unconditionally for both peer-groups and
888 * peers.
889 *
890 * This behavior is different for interface peers though, which enable
891 * the *extended-nexthop* flag by default, which regular peers do not.
892 * As the peer-group can contain both regular and interface peers, the
893 * flag inversion state must be set on the peer only.
894 *
895 * When a peer inherits the configuration from a peer-group and the
896 * inversion state of the flag differs between peer and peer-group, the
897 * newly set value must equal to the inverted state of the peer-group.
898 */
899 uint32_t flags_invert;
900 /*
901 * Effective array for storing the peer/peer-group flags. In case of a
902 * peer-group, the peer-specific overrides (see flags_override and
903 * flags_invert) must be respected.
904 */
d7c0a89a 905 uint32_t flags;
718e3744 906#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
907#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
908#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
909#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
910#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 911#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 912#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 913#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 914#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
47cbc09b
PM		 915#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
916#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 917#define PEER_FLAG_LONESOUL (1 << 11)
918#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
919#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 920#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
47cbc09b
PM		 921#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
922#define PEER_FLAG_ENFORCE_FIRST_AS (1 << 16) /* enforce-first-as */
b90a8e13
PM		 923#define PEER_FLAG_ROUTEADV (1 << 17) /* route advertise */
924#define PEER_FLAG_TIMER (1 << 18) /* keepalive & holdtime */
925#define PEER_FLAG_TIMER_CONNECT (1 << 19) /* connect timer */
a14810f4
PM		 926#define PEER_FLAG_PASSWORD (1 << 20) /* password */
927#define PEER_FLAG_LOCAL_AS (1 << 21) /* local-as */
928#define PEER_FLAG_UPDATE_SOURCE (1 << 22) /* update-source */
02a82b47 929
d62a17ae 930 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
931 char *tx_shutdown_message;
718e3744 932
d62a17ae 933 /* NSF mode (graceful restart) */
d7c0a89a 934 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 935
04e1c5bb
QY		 936 /* Peer Per AF flags */
937 /*
9fb964de
PM		 938 * Please consult the comments for *flags_override*, *flags_invert* and
939 * *flags* to understand what these three arrays do. The address-family
940 * specific attributes are being treated the exact same way as global
941 * peer attributes.
04e1c5bb
QY		 942 */
943 uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
27c05d4d 944 uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
d7c0a89a 945 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 946#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
947#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
948#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
949#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
950#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
951#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
952#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
953#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
954#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
955#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
956#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
957#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
958#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
959#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
960#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
961#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 962#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 963#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 964#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
965#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 966#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 967#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
d93f7ffc 968#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 969#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 970#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 971
dcc68b5e
MS		 972 enum bgp_addpath_strat addpath_type[AFI_MAX][SAFI_MAX];
973
d62a17ae 974 /* MD5 password */
975 char *password;
718e3744 976
d62a17ae 977 /* default-originate route-map. */
978 struct {
979 char *name;
980 struct route_map *map;
981 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 982
d62a17ae 983 /* Peer status flags. */
d7c0a89a 984 uint16_t sflags;
718e3744 985#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
986#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
987#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
988#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
989#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 990#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
991#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 992
d62a17ae 993 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 994 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 995#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
996#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 997#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
998#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
999#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
1000#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 1001
b90a8e13 1002 /* Configured timer values. */
1588f6f4
QY		 1003 _Atomic uint32_t holdtime;
1004 _Atomic uint32_t keepalive;
1005 _Atomic uint32_t connect;
1006 _Atomic uint32_t routeadv;
d62a17ae 1007
1008 /* Timer values. */
1588f6f4
QY		 1009 _Atomic uint32_t v_start;
1010 _Atomic uint32_t v_connect;
1011 _Atomic uint32_t v_holdtime;
1012 _Atomic uint32_t v_keepalive;
1013 _Atomic uint32_t v_routeadv;
1014 _Atomic uint32_t v_pmax_restart;
1015 _Atomic uint32_t v_gr_restart;
d62a17ae 1016
1017 /* Threads. */
1018 struct thread *t_read;
424ab01d 1019 struct thread *t_write;
d62a17ae 1020 struct thread *t_start;
387f984e
QY		 1021 struct thread *t_connect_check_r;
1022 struct thread *t_connect_check_w;
d62a17ae 1023 struct thread *t_connect;
1024 struct thread *t_holdtime;
d62a17ae 1025 struct thread *t_routeadv;
1026 struct thread *t_pmax_restart;
1027 struct thread *t_gr_restart;
1028 struct thread *t_gr_stale;
56257a44 1029 struct thread *t_generate_updgrp_packets;
424ab01d 1030 struct thread *t_process_packet;
d62a17ae 1031
49507a6f 1032 /* Thread flags. */
0545c373 1033 _Atomic uint32_t thread_flags;
b750b0ba
QY		 1034#define PEER_THREAD_WRITES_ON (1 << 0)
1035#define PEER_THREAD_READS_ON (1 << 1)
1036#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 1037 /* workqueues */
1038 struct work_queue *clear_node_queue;
1039
a4d82a8a
PZ		 1040#define PEER_TOTAL_RX(peer) \
1041 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
1042 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
1043 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
1044 + atomic_load_explicit(&peer->refresh_in, \
1045 memory_order_relaxed) \
1046 + atomic_load_explicit(&peer->keepalive_in, \
1047 memory_order_relaxed) \
1048 + atomic_load_explicit(&peer->dynamic_cap_in, \
1049 memory_order_relaxed)
1050
1051#define PEER_TOTAL_TX(peer) \
1052 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
1053 + atomic_load_explicit(&peer->update_out, \
1054 memory_order_relaxed) \
1055 + atomic_load_explicit(&peer->notify_out, \
1056 memory_order_relaxed) \
1057 + atomic_load_explicit(&peer->refresh_out, \
1058 memory_order_relaxed) \
1059 + atomic_load_explicit(&peer->keepalive_out, \
1060 memory_order_relaxed) \
1061 + atomic_load_explicit(&peer->dynamic_cap_out, \
1062 memory_order_relaxed)
0112e9e0 1063
d62a17ae 1064 /* Statistics field */
996c9314
LB		 1065 _Atomic uint32_t open_in; /* Open message input count */
1066 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 1067 _Atomic uint32_t update_in; /* Update message input count */
1068 _Atomic uint32_t update_out; /* Update message ouput count */
1069 _Atomic time_t update_time; /* Update message received time. */
1070 _Atomic uint32_t keepalive_in; /* Keepalive input count */
1071 _Atomic uint32_t keepalive_out; /* Keepalive output count */
1072 _Atomic uint32_t notify_in; /* Notify input count */
1073 _Atomic uint32_t notify_out; /* Notify output count */
1074 _Atomic uint32_t refresh_in; /* Route Refresh input count */
1075 _Atomic uint32_t refresh_out; /* Route Refresh output count */
1076 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 1077 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 1078
1079 /* BGP state count */
d7c0a89a
QY		 1080 uint32_t established; /* Established */
1081 uint32_t dropped; /* Dropped */
d62a17ae 1082
1083 /* Update delay related fields */
d7c0a89a 1084 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 1085 for EOR */
1086
1087 /* Syncronization list and time. */
1088 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
1089 time_t synctime;
1588f6f4
QY		 1090 /* timestamp when the last UPDATE msg was written */
1091 _Atomic time_t last_write;
1092 /* timestamp when the last msg was written */
1093 _Atomic time_t last_update;
d62a17ae 1094
1095 /* Send prefix count. */
1096 unsigned long scount[AFI_MAX][SAFI_MAX];
1097
d62a17ae 1098 /* Notify data. */
1099 struct bgp_notify notify;
1100
d62a17ae 1101 /* Filter structure. */
1102 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
1103
70ee29b4
PM		 1104 /*
1105 * Parallel array to filter that indicates whether each filter
1106 * originates from a peer-group or if it is config that is specific to
1107 * this individual peer. If a filter is set independent of the
1108 * peer-group the appropriate bit should be set here. If this peer is a
1109 * peer-group, this memory region should be all zeros. The assumption
1110 * is that the default state for all flags is unset. Due to filters
1111 * having a direction (e.g. in/out/...), this array has a third
1112 * dimension for storing the overrides independently per direction.
1113 *
1114 * Notes:
1115 * - if a filter for an individual peer is unset, the corresponding
1116 * override flag is unset and the peer is considered to be back in
1117 * sync with the peer-group.
1118 * - This does *not* contain the filter values, rather it contains
1119 * whether the filter in filter (struct bgp_filter) is peer-specific.
1120 */
1121 uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
1122 ? FILTER_MAX
1123 : RMAP_MAX];
1124#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
1125#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
1126#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
1127#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
1128#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
1129
d62a17ae 1130 /* ORF Prefix-list */
1131 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
1132
1133 /* Text description of last attribute rcvd */
1134 char rcvd_attr_str[BUFSIZ];
1135
1136 /* Track if we printed the attribute in debugs */
1137 int rcvd_attr_printed;
1138
1139 /* Prefix count. */
1140 unsigned long pcount[AFI_MAX][SAFI_MAX];
1141
1142 /* Max prefix count. */
1143 unsigned long pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY		 1144 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1145 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1146#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1147
d62a17ae 1148 /* allowas-in. */
1149 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1150
d62a17ae 1151 /* weight */
1152 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1153
d62a17ae 1154 /* peer reset cause */
1155 char last_reset;
e0701b79 1156#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1157#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1158#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1159#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1160#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1161#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1162#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1163#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1164#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1165#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1166#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1167#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1168#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1169#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1170#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1171#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1172#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1173#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1174#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1175#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1176#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1177#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1178#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1179#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 1180#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1181#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 1182 unsigned long last_reset_cause_size;
d7c0a89a 1183 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1184
d62a17ae 1185 /* The kind of route-map Flags.*/
d7c0a89a 1186 uint8_t rmap_type;
ac41b2a2 1187#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1188#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1189#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1190#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1191#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1192#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1193#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1194#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1195
d62a17ae 1196 /* peer specific BFD information */
1197 struct bfd_info *bfd_info;
04b6bdc0 1198
d62a17ae 1199 /* hostname and domainname advertised by host */
1200 char *hostname;
1201 char *domainname;
19df7279 1202
d62a17ae 1203 QOBJ_FIELDS
718e3744 1204};
19df7279 1205DECLARE_QOBJ_TYPE(peer)
718e3744 1206
598ce6bd 1207/* Inherit peer attribute from peer-group. */
e7103a96
PM		 1208#define PEER_ATTR_INHERIT(peer, group, attr) \
1209 ((peer)->attr = (group)->conf->attr)
1210#define PEER_STR_ATTR_INHERIT(peer, group, attr, mt) \
598ce6bd
PM		 1211 do { \
1212 if ((peer)->attr) \
1213 XFREE(mt, (peer)->attr); \
e7103a96
PM		 1214 if ((group)->conf->attr) \
1215 (peer)->attr = XSTRDUP(mt, (group)->conf->attr); \
598ce6bd
PM		 1216 else \
1217 (peer)->attr = NULL; \
1218 } while (0)
a14810f4
PM		 1219#define PEER_SU_ATTR_INHERIT(peer, group, attr) \
1220 do { \
1221 if ((peer)->attr) \
1222 sockunion_free((peer)->attr); \
1223 if ((group)->conf->attr) \
1224 (peer)->attr = sockunion_dup((group)->conf->attr); \
1225 else \
1226 (peer)->attr = NULL; \
1227 } while (0)
598ce6bd 1228
ad4cbda1 1229/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1230#define BGP_PEER_START_SUPPRESSED(P) \
1231 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1232 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1233
0df7c91f
PJ		 1234#define PEER_PASSWORD_MINLEN (1)
1235#define PEER_PASSWORD_MAXLEN (80)
1236
718e3744 1237/* This structure's member directly points incoming packet data
1238 stream. */
d62a17ae 1239struct bgp_nlri {
1240 /* AFI. */
a46a2e9b 1241 uint16_t afi; /* iana_afi_t */
718e3744 1242
d62a17ae 1243 /* SAFI. */
a46a2e9b 1244 uint8_t safi; /* iana_safi_t */
718e3744 1245
d62a17ae 1246 /* Pointer to NLRI byte stream. */
d7c0a89a 1247 uint8_t *nlri;
718e3744 1248
d62a17ae 1249 /* Length of whole NLRI. */
1250 bgp_size_t length;
718e3744 1251};
1252
1253/* BGP versions. */
1254#define BGP_VERSION_4 4
718e3744 1255
1256/* Default BGP port number. */
1257#define BGP_PORT_DEFAULT 179
1258
718e3744 1259/* BGP minimum message size. */
1260#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1261#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1262#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1263#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1264#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1265#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1266
1267/* BGP message types. */
1268#define BGP_MSG_OPEN 1
1269#define BGP_MSG_UPDATE 2
1270#define BGP_MSG_NOTIFY 3
1271#define BGP_MSG_KEEPALIVE 4
1272#define BGP_MSG_ROUTE_REFRESH_NEW 5
1273#define BGP_MSG_CAPABILITY 6
1274#define BGP_MSG_ROUTE_REFRESH_OLD 128
1275
1276/* BGP open optional parameter. */
1277#define BGP_OPEN_OPT_AUTH 1
1278#define BGP_OPEN_OPT_CAP 2
1279
1280/* BGP4 attribute type codes. */
1281#define BGP_ATTR_ORIGIN 1
1282#define BGP_ATTR_AS_PATH 2
1283#define BGP_ATTR_NEXT_HOP 3
1284#define BGP_ATTR_MULTI_EXIT_DISC 4
1285#define BGP_ATTR_LOCAL_PREF 5
1286#define BGP_ATTR_ATOMIC_AGGREGATE 6
1287#define BGP_ATTR_AGGREGATOR 7
1288#define BGP_ATTR_COMMUNITIES 8
1289#define BGP_ATTR_ORIGINATOR_ID 9
1290#define BGP_ATTR_CLUSTER_LIST 10
1291#define BGP_ATTR_DPA 11
1292#define BGP_ATTR_ADVERTISER 12
1293#define BGP_ATTR_RCID_PATH 13
1294#define BGP_ATTR_MP_REACH_NLRI 14
1295#define BGP_ATTR_MP_UNREACH_NLRI 15
1296#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1297#define BGP_ATTR_AS4_PATH 17
1298#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1299#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1300#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1301#define BGP_ATTR_ENCAP 23
57d187bc 1302#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1303#define BGP_ATTR_PREFIX_SID 40
943d595a 1304#if ENABLE_BGP_VNC_ATTR
65efcfce
LB		 1305#define BGP_ATTR_VNC 255
1306#endif
718e3744 1307
1308/* BGP update origin. */
1309#define BGP_ORIGIN_IGP 0
1310#define BGP_ORIGIN_EGP 1
1311#define BGP_ORIGIN_INCOMPLETE 2
1312
1313/* BGP notify message codes. */
1314#define BGP_NOTIFY_HEADER_ERR 1
1315#define BGP_NOTIFY_OPEN_ERR 2
1316#define BGP_NOTIFY_UPDATE_ERR 3
1317#define BGP_NOTIFY_HOLD_ERR 4
1318#define BGP_NOTIFY_FSM_ERR 5
1319#define BGP_NOTIFY_CEASE 6
1320#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1321
4b4e07d2
DT		 1322#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1323
718e3744 1324/* BGP_NOTIFY_HEADER_ERR sub codes. */
1325#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1326#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1327#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1328
1329/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1330#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1331#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1332#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1333#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1334#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1335#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1336#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1337#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1338
1339/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1340#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1341#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1342#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1343#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1344#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1345#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1346#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1347#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1348#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1349#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1350#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1351
4b4e07d2 1352/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1353#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1354#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1355#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1356#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1357#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1358#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1359#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1360#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1361
1362/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1363#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1364#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1365#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1366
1367/* BGP finite state machine status. */
1368#define Idle 1
1369#define Connect 2
1370#define Active 3
1371#define OpenSent 4
1372#define OpenConfirm 5
1373#define Established 6
ca058a30
PJ		 1374#define Clearing 7
1375#define Deleted 8
1376#define BGP_STATUS_MAX 9
718e3744 1377
1378/* BGP finite state machine events. */
1379#define BGP_Start 1
1380#define BGP_Stop 2
1381#define TCP_connection_open 3
1382#define TCP_connection_closed 4
1383#define TCP_connection_open_failed 5
1384#define TCP_fatal_error 6
1385#define ConnectRetry_timer_expired 7
1386#define Hold_Timer_expired 8
1387#define KeepAlive_timer_expired 9
1388#define Receive_OPEN_message 10
1389#define Receive_KEEPALIVE_message 11
1390#define Receive_UPDATE_message 12
1391#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1392#define Clearing_Completed 14
1393#define BGP_EVENTS_MAX 15
718e3744 1394
1395/* BGP timers default value. */
8efe88ea 1396/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1397#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1398#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1399#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1400#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1401#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1402#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1403
1404/* BGP default local preference. */
1405#define BGP_DEFAULT_LOCAL_PREF 100
1406
7f323236
DW		 1407/* BGP local-preference to send when 'bgp graceful-shutdown'
1408 * is configured */
1409#define BGP_GSHUT_LOCAL_PREF 0
1410
3f9c7369
DS		 1411/* BGP default subgroup packet queue max . */
1412#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1413
538621f2 1414/* BGP graceful restart */
1415#define BGP_DEFAULT_RESTART_TIME 120
1416#define BGP_DEFAULT_STALEPATH_TIME 360
1417
718e3744 1418/* BGP uptime string length. */
1419#define BGP_UPTIME_LEN 25
1420
1421/* Default configuration settings for bgpd. */
1422#define BGP_VTY_PORT 2605
718e3744 1423#define BGP_DEFAULT_CONFIG "bgpd.conf"
1424
1425/* Check AS path loop when we send NLRI. */
1426/* #define BGP_SEND_ASPATH_CHECK */
1427
f14e6fdb
DS		 1428/* BGP Dynamic Neighbors feature */
1429#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1430#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1431#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1432
718e3744 1433/* Flag for peer_clear_soft(). */
d62a17ae 1434enum bgp_clear_type {
1435 BGP_CLEAR_SOFT_NONE,
1436 BGP_CLEAR_SOFT_OUT,
1437 BGP_CLEAR_SOFT_IN,
1438 BGP_CLEAR_SOFT_BOTH,
1439 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1440};
1441
1442/* Macros. */
424ab01d 1443#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1444#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1445#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1446 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1447
718e3744 1448/* BGP error codes. */
1449#define BGP_SUCCESS 0
1450#define BGP_ERR_INVALID_VALUE -1
1451#define BGP_ERR_INVALID_FLAG -2
1452#define BGP_ERR_INVALID_AS -3
1453#define BGP_ERR_INVALID_BGP -4
1454#define BGP_ERR_PEER_GROUP_MEMBER -5
1455#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1456#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1457#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1458#define BGP_ERR_PEER_GROUP_MISMATCH -9
1459#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1460#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1461#define BGP_ERR_AS_MISMATCH -12
1462#define BGP_ERR_PEER_FLAG_CONFLICT -13
1463#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1464#define BGP_ERR_PEER_FILTER_CONFLICT -15
1465#define BGP_ERR_NOT_INTERNAL_PEER -16
1466#define BGP_ERR_REMOVE_PRIVATE_AS -17
1467#define BGP_ERR_AF_UNCONFIGURED -18
1468#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1469#define BGP_ERR_INSTANCE_MISMATCH -20
1470#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1471#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1472#define BGP_ERR_TCPSIG_FAILED -23
1473#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1474#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1475#define BGP_ERR_NO_INTERFACE_CONFIG -26
1476#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1477#define BGP_ERR_AS_OVERRIDE -28
1478#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1479#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1480#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1481#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1482#define BGP_ERR_MAX -33
63fa10b5 1483#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1484#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1485
3f9c7369
DS		 1486/*
1487 * Enumeration of different policy kinds a peer can be configured with.
1488 */
d62a17ae 1489typedef enum {
1490 BGP_POLICY_ROUTE_MAP,
1491 BGP_POLICY_FILTER_LIST,
1492 BGP_POLICY_PREFIX_LIST,
1493 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1494} bgp_policy_type_e;
1495
dcc68b5e
MS		 1496/* peer_flag_change_type. */
1497enum peer_change_type {
1498 peer_change_none,
1499 peer_change_reset,
1500 peer_change_reset_in,
1501 peer_change_reset_out,
1502};
1503
718e3744 1504extern struct bgp_master *bm;
37fe7731 1505extern unsigned int multipath_num;
718e3744 1506
718e3744 1507/* Prototypes. */
d62a17ae 1508extern void bgp_terminate(void);
1509extern void bgp_reset(void);
1510extern time_t bgp_clock(void);
1511extern void bgp_zclient_reset(void);
d62a17ae 1512extern struct bgp *bgp_get_default(void);
1513extern struct bgp *bgp_lookup(as_t, const char *);
1514extern struct bgp *bgp_lookup_by_name(const char *);
1515extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
e2f3a930
T		 1516extern struct bgp *bgp_get_evpn(void);
1517extern void bgp_set_evpn(struct bgp *bgp);
d62a17ae 1518extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1519extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1520extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1521extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1522extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1523extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1524extern struct peer_group *peer_group_get(struct bgp *, const char *);
1525extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1526 union sockunion *,
1527 struct peer_group *);
1528extern struct prefix *
1529peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1530extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1531 struct prefix *,
1532 struct prefix **);
1533extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1534 union sockunion *);
28066f4b
DS		 1535
1536/*
1537 * Peers are incredibly easy to memory leak
1538 * due to the various ways that they are actually used
1539 * Provide some functionality to debug locks and unlocks
1540 */
1541extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1542extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1543#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1544#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1545
d62a17ae 1546extern bgp_peer_sort_t peer_sort(struct peer *peer);
1547extern int peer_active(struct peer *);
1548extern int peer_active_nego(struct peer *);
1549extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1550extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1551 as_t, as_t, int, afi_t, safi_t,
1552 struct peer_group *);
1553extern struct peer *peer_create_accept(struct bgp *);
1554extern void peer_xfer_config(struct peer *dst, struct peer *src);
94d4c685
DS		 1555extern char *peer_uptime(time_t uptime2, char *buf, size_t len, bool use_json,
1556 json_object *json);
856ca177 1557
d62a17ae 1558extern int bgp_config_write(struct vty *);
6b0655a2 1559
d62a17ae 1560extern void bgp_master_init(struct thread_master *master);
718e3744 1561
f533be73 1562extern void bgp_init(unsigned short instance);
419dfe6a 1563extern void bgp_pthreads_run(void);
2d4ee774 1564extern void bgp_pthreads_finish(void);
d62a17ae 1565extern void bgp_route_map_init(void);
1566extern void bgp_session_reset(struct peer *);
718e3744 1567
d62a17ae 1568extern int bgp_option_set(int);
1569extern int bgp_option_unset(int);
1570extern int bgp_option_check(int);
718e3744 1571
d62a17ae 1572extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1573extern void bgp_instance_up(struct bgp *);
1574extern void bgp_instance_down(struct bgp *);
1575extern int bgp_delete(struct bgp *);
718e3744 1576
e5619c28
PG		 1577extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1578 vrf_id_t old_vrf_id, bool create);
1579
d62a17ae 1580extern int bgp_flag_set(struct bgp *, int);
1581extern int bgp_flag_unset(struct bgp *, int);
1582extern int bgp_flag_check(struct bgp *, int);
718e3744 1583
d62a17ae 1584extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1585extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1586
d62a17ae 1587extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1588extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1589
d62a17ae 1590extern int bgp_confederation_id_set(struct bgp *, as_t);
1591extern int bgp_confederation_id_unset(struct bgp *);
1592extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1593
d62a17ae 1594extern int bgp_confederation_peers_add(struct bgp *, as_t);
1595extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1596
d7c0a89a 1597extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime);
d62a17ae 1598extern int bgp_timers_unset(struct bgp *);
718e3744 1599
d7c0a89a 1600extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1601extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1602
d7c0a89a 1603extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1604extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1605
d62a17ae 1606extern int bgp_listen_limit_set(struct bgp *, int);
1607extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1608
d62a17ae 1609extern int bgp_update_delay_active(struct bgp *);
1610extern int bgp_update_delay_configured(struct bgp *);
318cac96 1611extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1612extern void peer_as_change(struct peer *, as_t, int);
1613extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1614 int, afi_t, safi_t);
1615extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1616extern int peer_delete(struct peer *peer);
1617extern int peer_group_delete(struct peer_group *);
1618extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1619extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1620
d62a17ae 1621extern int peer_activate(struct peer *, afi_t, safi_t);
1622extern int peer_deactivate(struct peer *, afi_t, safi_t);
1623extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1624
d62a17ae 1625extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1626 struct peer_group *, as_t *);
718e3744 1627
d7c0a89a
QY		 1628extern int peer_flag_set(struct peer *, uint32_t);
1629extern int peer_flag_unset(struct peer *, uint32_t);
9fb964de 1630extern void peer_flag_inherit(struct peer *peer, uint32_t flag);
718e3744 1631
d7c0a89a
QY		 1632extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1633extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1634extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
cf9ac8bf
PM		 1635extern void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi,
1636 uint32_t flag);
dcc68b5e
MS		 1637extern void peer_change_action(struct peer *peer, afi_t afi, safi_t safi,
1638 enum peer_change_type type);
718e3744 1639
d62a17ae 1640extern int peer_ebgp_multihop_set(struct peer *, int);
1641extern int peer_ebgp_multihop_unset(struct peer *);
1642extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1643
d62a17ae 1644extern int peer_description_set(struct peer *, const char *);
1645extern int peer_description_unset(struct peer *);
718e3744 1646
d62a17ae 1647extern int peer_update_source_if_set(struct peer *, const char *);
1648extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1649extern int peer_update_source_unset(struct peer *);
718e3744 1650
1de27621
DA		 1651extern int peer_default_originate_set(struct peer *peer, afi_t afi, safi_t safi,
1652 const char *rmap,
1653 struct route_map *route_map);
d62a17ae 1654extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1655
d7c0a89a 1656extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1657extern int peer_port_unset(struct peer *);
718e3744 1658
d7c0a89a 1659extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1660extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1661
d7c0a89a
QY		 1662extern int peer_timers_set(struct peer *, uint32_t keepalive,
1663 uint32_t holdtime);
d62a17ae 1664extern int peer_timers_unset(struct peer *);
718e3744 1665
d7c0a89a 1666extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1667extern int peer_timers_connect_unset(struct peer *);
718e3744 1668
d7c0a89a 1669extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1670extern int peer_advertise_interval_unset(struct peer *);
718e3744 1671
d62a17ae 1672extern void peer_interface_set(struct peer *, const char *);
1673extern void peer_interface_unset(struct peer *);
718e3744 1674
d62a17ae 1675extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1676extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1677
d62a17ae 1678extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1679extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1680
d62a17ae 1681extern int peer_local_as_set(struct peer *, as_t, int, int);
1682extern int peer_local_as_unset(struct peer *);
718e3744 1683
d62a17ae 1684extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1685 const char *);
1686extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1687
d62a17ae 1688extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1689extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1690
1de27621
DA		 1691extern int peer_route_map_set(struct peer *peer, afi_t afi, safi_t safi, int,
1692 const char *name, struct route_map *route_map);
d62a17ae 1693extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1694
1de27621
DA		 1695extern int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi,
1696 const char *name,
1697 struct route_map *route_map);
0df7c91f 1698
d62a17ae 1699extern int peer_password_set(struct peer *, const char *);
1700extern int peer_password_unset(struct peer *);
0df7c91f 1701
d62a17ae 1702extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1703
d7c0a89a
QY		 1704extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1705 uint8_t, int, uint16_t);
d62a17ae 1706extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1707
d62a17ae 1708extern int peer_clear(struct peer *, struct listnode **);
1709extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1710
d62a17ae 1711extern int peer_ttl_security_hops_set(struct peer *, int);
1712extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1713
d62a17ae 1714extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1715extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1716
d62a17ae 1717extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1718extern void bgp_route_map_terminate(void);
16286195 1719
d62a17ae 1720extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1721
5c525538 1722extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1723 afi_t *afi, safi_t *safi);
1724extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1725 iana_afi_t *pkt_afi,
1726 iana_safi_t *pkt_safi);
9cabb64b 1727
d62a17ae 1728extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1729extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1730extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1731
ffd0c037 1732extern void bgp_close(void);
92375c91
JB		 1733extern void bgp_free(struct bgp *);
1734
1735static inline struct bgp *bgp_lock(struct bgp *bgp)
1736{
1737 bgp->lock++;
1738 return bgp;
1739}
1740
1741static inline void bgp_unlock(struct bgp *bgp)
1742{
1743 assert(bgp->lock > 0);
1744 if (--bgp->lock == 0)
1745 bgp_free(bgp);
1746}
ffd0c037 1747
d62a17ae 1748static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1749{
d62a17ae 1750 switch (afi) {
1751 case AFI_IP:
1752 switch (safi) {
1753 case SAFI_UNICAST:
1754 return BGP_AF_IPV4_UNICAST;
1755 break;
1756 case SAFI_MULTICAST:
1757 return BGP_AF_IPV4_MULTICAST;
1758 break;
1759 case SAFI_LABELED_UNICAST:
1760 return BGP_AF_IPV4_LBL_UNICAST;
1761 break;
1762 case SAFI_MPLS_VPN:
1763 return BGP_AF_IPV4_VPN;
1764 break;
1765 case SAFI_ENCAP:
1766 return BGP_AF_IPV4_ENCAP;
1767 break;
7c40bf39 1768 case SAFI_FLOWSPEC:
1769 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1770 default:
1771 return BGP_AF_MAX;
1772 break;
1773 }
1774 break;
1775 case AFI_IP6:
1776 switch (safi) {
1777 case SAFI_UNICAST:
1778 return BGP_AF_IPV6_UNICAST;
1779 break;
1780 case SAFI_MULTICAST:
1781 return BGP_AF_IPV6_MULTICAST;
1782 break;
1783 case SAFI_LABELED_UNICAST:
1784 return BGP_AF_IPV6_LBL_UNICAST;
1785 break;
1786 case SAFI_MPLS_VPN:
1787 return BGP_AF_IPV6_VPN;
1788 break;
1789 case SAFI_ENCAP:
1790 return BGP_AF_IPV6_ENCAP;
1791 break;
7c40bf39 1792 case SAFI_FLOWSPEC:
1793 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1794 default:
1795 return BGP_AF_MAX;
1796 break;
1797 }
1798 break;
1799 case AFI_L2VPN:
1800 switch (safi) {
1801 case SAFI_EVPN:
1802 return BGP_AF_L2VPN_EVPN;
1803 break;
1804 default:
1805 return BGP_AF_MAX;
1806 break;
1807 }
3f9c7369 1808 default:
d62a17ae 1809 return BGP_AF_MAX;
1810 break;
3f9c7369 1811 }
3f9c7369
DS		 1812}
1813
c8560b44 1814/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1815static inline int peer_group_active(struct peer *peer)
3f9c7369 1816{
d62a17ae 1817 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1818 return 1;
1819 return 0;
3f9c7369
DS		 1820}
1821
1822/* If peer is negotiated at least one address family return 1. */
d62a17ae 1823static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1824{
d62a17ae 1825 if (peer->afc_nego[afi][SAFI_UNICAST]
1826 || peer->afc_nego[afi][SAFI_MULTICAST]
1827 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1828 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1829 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1830 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1831 || peer->afc_nego[afi][SAFI_EVPN])
1832 return 1;
1833 return 0;
3f9c7369
DS		 1834}
1835
f14e6fdb 1836/* If at least one address family activated for group, return 1. */
d62a17ae 1837static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1838{
d62a17ae 1839 struct peer *peer = group->conf;
1840
1841 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1842 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 1843 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 1844 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1845 || peer->afc[AFI_IP6][SAFI_UNICAST]
1846 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1847 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1848 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1849 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 1850 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 1851 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1852 return 1;
1853 return 0;
f14e6fdb
DS		 1854}
1855
d62a17ae 1856static inline char *timestamp_string(time_t ts)
3f9c7369 1857{
d62a17ae 1858 time_t tbuf;
1859 tbuf = time(NULL) - (bgp_clock() - ts);
1860 return ctime(&tbuf);
3f9c7369
DS		 1861}
1862
d62a17ae 1863static inline int peer_established(struct peer *peer)
3f9c7369 1864{
d62a17ae 1865 if (peer->status == Established)
1866 return 1;
1867 return 0;
3f9c7369
DS		 1868}
1869
d62a17ae 1870static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1871{
d62a17ae 1872 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1873}
1874
d62a17ae 1875static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1876{
d62a17ae 1877 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1878}
1879
d1be1f08 1880/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1881static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1882{
d62a17ae 1883 struct vrf *vrf;
d1be1f08 1884
d62a17ae 1885 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1886 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1887 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1888 vrf = vrf_lookup_by_name(bgp->name);
1889 else
1890 vrf = NULL;
d1be1f08 1891
d62a17ae 1892 return vrf;
d1be1f08 1893}
1894
1895/* Link BGP instance to VRF. */
d62a17ae 1896static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1897{
d62a17ae 1898 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1899 if (vrf->info != (void *)bgp)
1900 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1901}
1902
1903/* Unlink BGP instance from VRF. */
d62a17ae 1904static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1905{
d62a17ae 1906 if (vrf->info == (void *)bgp) {
1907 vrf->info = NULL;
1908 bgp_unlock(bgp);
1909 }
1910 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1911}
1912
401d56cc 1913extern void bgp_unset_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1914
1915/* For benefit of rfapi */
d62a17ae 1916extern struct peer *peer_new(struct bgp *bgp);
00d252cb 1917#endif /* _QUAGGA_BGPD_H */
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