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bgpd: Fix group overrides for AF flags/filters
[mirror_frr.git] / bgpd / bgpd.h
CommitLineData
718e3744 1/* BGP message definition header.
896014f4
DL		 2 * Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
718e3744 20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
19df7279 24#include "qobj.h"
d3ecc69e
QY		 25#include <pthread.h>
26
856ca177 27#include "lib/json.h"
6aeb9e78 28#include "vrf.h"
94c60424 29#include "vty.h"
6aeb9e78 30
718e3744 31/* For union sockunion. */
3f9c7369 32#include "queue.h"
718e3744 33#include "sockunion.h"
518f0eb1 34#include "routemap.h"
ffd0c037 35#include "linklist.h"
8efe88ea 36#include "defaults.h"
4a1ab8e4 37#include "bgp_memory.h"
14c1a7bf 38#include "bitfield.h"
fe1dc5a3 39#include "vxlan.h"
955bfd98 40#include "bgp_labelpool.h"
718e3744 41
04b6bdc0 42#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 43#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 44
5c81b96a 45/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
46#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
47
3f9c7369
DS		 48struct update_subgroup;
49struct bpacket;
50
0299c004
DS		 51/*
52 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 53 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
54 * behavior
0299c004
DS		 55 * in the system.
56 */
d62a17ae 57enum { AS_UNSPECIFIED = 0,
58 AS_SPECIFIED,
59 AS_INTERNAL,
60 AS_EXTERNAL,
0299c004
DS		 61};
62
718e3744 63/* Typedef BGP specific types. */
d7c0a89a
QY		 64typedef uint32_t as_t;
65typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
66typedef uint16_t bgp_size_t;
718e3744 67
d62a17ae 68#define max(a, b) \
69 ({ \
70 __typeof__(a) _a = (a); \
71 __typeof__(b) _b = (b); \
72 _a > _b ? _a : _b; \
73 })
74
75enum bgp_af_index {
76 BGP_AF_START,
77 BGP_AF_IPV4_UNICAST = BGP_AF_START,
78 BGP_AF_IPV4_MULTICAST,
79 BGP_AF_IPV4_VPN,
80 BGP_AF_IPV6_UNICAST,
81 BGP_AF_IPV6_MULTICAST,
82 BGP_AF_IPV6_VPN,
83 BGP_AF_IPV4_ENCAP,
84 BGP_AF_IPV6_ENCAP,
85 BGP_AF_L2VPN_EVPN,
86 BGP_AF_IPV4_LBL_UNICAST,
87 BGP_AF_IPV6_LBL_UNICAST,
7c40bf39 88 BGP_AF_IPV4_FLOWSPEC,
89 BGP_AF_IPV6_FLOWSPEC,
d62a17ae 90 BGP_AF_MAX
3f9c7369
DS		 91};
92
d62a17ae 93#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 94
d62a17ae 95#define FOREACH_AFI_SAFI(afi, safi) \
96 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
97 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 98
718e3744 99/* BGP master for system wide configurations and variables. */
d62a17ae 100struct bgp_master {
101 /* BGP instance list. */
102 struct list *bgp;
103
104 /* BGP thread master. */
105 struct thread_master *master;
718e3744 106
0ca8b79f 107/* BGP pthreads. */
424ab01d 108#define PTHREAD_IO (1 << 1)
0ca8b79f 109#define PTHREAD_KEEPALIVES (1 << 2)
2d4ee774 110
d62a17ae 111 /* work queues */
112 struct work_queue *process_main_queue;
87d4a781 113
d62a17ae 114 /* Listening sockets */
115 struct list *listen_sockets;
718e3744 116
d62a17ae 117 /* BGP port number. */
d7c0a89a 118 uint16_t port;
3a02d1f7 119
d62a17ae 120 /* Listener address */
121 char *address;
718e3744 122
d62a17ae 123 /* BGP start time. */
124 time_t start_time;
125
126 /* Various BGP global configuration. */
d7c0a89a 127 uint8_t options;
718e3744 128#define BGP_OPT_NO_FIB (1 << 0)
129#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
130#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 131#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369 132
d62a17ae 133 uint64_t updgrp_idspace;
134 uint64_t subgrp_idspace;
5fe9f963 135
d62a17ae 136 /* timer to dampen route map changes */
137 struct thread *t_rmap_update; /* Handle route map updates */
d7c0a89a 138 uint32_t rmap_update_timer; /* Route map update timer */
5fe9f963 139#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 140
e9eb5f63 141 /* Id space for automatic RD derivation for an EVI/VRF */
142 bitfield_t rd_idspace;
143
955bfd98
PZ		 144 /* dynamic mpls label allocation pool */
145 struct labelpool labelpool;
146
97b4a0ec 147 bool terminating; /* global flag that sigint terminate seen */
d62a17ae 148 QOBJ_FIELDS
718e3744 149};
19df7279 150DECLARE_QOBJ_TYPE(bgp_master)
718e3744 151
73ac8160 152/* BGP route-map structure. */
d62a17ae 153struct bgp_rmap {
154 char *name;
155 struct route_map *map;
73ac8160
DS		 156};
157
d62a17ae 158struct bgp_redist {
d7c0a89a 159 unsigned short instance;
7c8ff89e 160
d62a17ae 161 /* BGP redistribute metric configuration. */
d7c0a89a
QY		 162 uint8_t redist_metric_flag;
163 uint32_t redist_metric;
7c8ff89e 164
d62a17ae 165 /* BGP redistribute route-map. */
166 struct bgp_rmap rmap;
7c8ff89e
DS		 167};
168
ddb5b488
PZ		 169typedef enum {
170 BGP_VPN_POLICY_DIR_FROMVPN = 0,
171 BGP_VPN_POLICY_DIR_TOVPN = 1,
172 BGP_VPN_POLICY_DIR_MAX = 2
173} vpn_policy_direction_t;
174
e70e9f8e
PZ		 175struct vpn_policy {
176 struct bgp *bgp; /* parent */
177 afi_t afi;
178 struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
179 struct ecommunity *import_redirect_rtlist;
180 char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
181 struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
182
183 /* should be mpls_label_t? */
184 uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
185 uint32_t tovpn_zebra_vrf_label_last_sent;
186 struct prefix_rd tovpn_rd;
187 struct prefix tovpn_nexthop; /* unset => set to 0 */
188 uint32_t flags;
189#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
190#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
191#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
12a844a5 192
1d4e8b0d
DS		 193 /*
194 * If we are importing another vrf into us keep a list of
195 * vrf names that are being imported into us.
196 */
12a844a5 197 struct list *import_vrf;
1d4e8b0d
DS		 198
199 /*
200 * if we are being exported to another vrf keep a list of
201 * vrf names that we are being exported to.
202 */
12a844a5 203 struct list *export_vrf;
e70e9f8e
PZ		 204};
205
ad4cbda1 206/*
207 * Type of 'struct bgp'.
208 * - Default: The default instance
209 * - VRF: A specific (non-default) VRF
210 * - View: An instance used for route exchange
211 * The "default" instance is treated separately to simplify the code. Note
212 * that if deployed in a Multi-VRF environment, it may not exist.
213 */
d62a17ae 214enum bgp_instance_type {
215 BGP_INSTANCE_TYPE_DEFAULT,
216 BGP_INSTANCE_TYPE_VRF,
217 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 218};
219
718e3744 220/* BGP instance structure. */
d62a17ae 221struct bgp {
222 /* AS number of this BGP instance. */
223 as_t as;
224
225 /* Name of this BGP instance. */
226 char *name;
3572fb26 227 char *name_pretty; /* printable "VRF|VIEW name|default" */
d62a17ae 228
229 /* Type of instance and VRF id. */
230 enum bgp_instance_type inst_type;
231 vrf_id_t vrf_id;
232
233 /* Reference count to allow peer_delete to finish after bgp_delete */
234 int lock;
235
236 /* Self peer. */
237 struct peer *peer_self;
238
239 /* BGP peer. */
240 struct list *peer;
241 struct hash *peerhash;
242
243 /* BGP peer group. */
244 struct list *group;
245
246 /* The maximum number of BGP dynamic neighbors that can be created */
247 int dynamic_neighbors_limit;
248
249 /* The current number of BGP dynamic neighbors */
250 int dynamic_neighbors_count;
251
252 struct hash *update_groups[BGP_AF_MAX];
253
254 /*
255 * Global statistics for update groups.
256 */
257 struct {
d7c0a89a
QY		 258 uint32_t join_events;
259 uint32_t prune_events;
260 uint32_t merge_events;
261 uint32_t split_events;
262 uint32_t updgrp_switch_events;
263 uint32_t peer_refreshes_combined;
264 uint32_t adj_count;
265 uint32_t merge_checks_triggered;
266
267 uint32_t updgrps_created;
268 uint32_t updgrps_deleted;
269 uint32_t subgrps_created;
270 uint32_t subgrps_deleted;
d62a17ae 271 } update_group_stats;
272
273 /* BGP configuration. */
d7c0a89a 274 uint16_t config;
c2d58d6d 275#define BGP_CONFIG_CLUSTER_ID (1 << 0)
276#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 277
d62a17ae 278 /* BGP router identifier. */
279 struct in_addr router_id;
280 struct in_addr router_id_static;
281 struct in_addr router_id_zebra;
718e3744 282
d62a17ae 283 /* BGP route reflector cluster ID. */
284 struct in_addr cluster_id;
718e3744 285
d62a17ae 286 /* BGP confederation information. */
287 as_t confed_id;
288 as_t *confed_peers;
289 int confed_peers_cnt;
718e3744 290
d62a17ae 291 struct thread
292 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 293
d7c0a89a 294 uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
abc920f8 295#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d7c0a89a
QY		 296 uint32_t maxmed_onstartup_value; /* Max-med value when active on
297 start-up */
d62a17ae 298 struct thread
299 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
d7c0a89a 300 uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
d62a17ae 301
d7c0a89a 302 uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
abc920f8 303#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
d7c0a89a
QY		 304 uint32_t maxmed_admin_value; /* Max-med value when administrative in on
305 */
abc920f8
DS		 306#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
307
d7c0a89a
QY		 308 uint8_t maxmed_active; /* 1/0 if max-med is active or not */
309 uint32_t maxmed_value; /* Max-med value when its active */
d62a17ae 310
311 /* BGP update delay on startup */
312 struct thread *t_update_delay;
313 struct thread *t_establish_wait;
d7c0a89a
QY		 314 uint8_t update_delay_over;
315 uint8_t main_zebra_update_hold;
316 uint8_t main_peers_update_hold;
317 uint16_t v_update_delay;
318 uint16_t v_establish_wait;
d62a17ae 319 char update_delay_begin_time[64];
320 char update_delay_end_time[64];
321 char update_delay_zebra_resume_time[64];
322 char update_delay_peers_resume_time[64];
d7c0a89a
QY		 323 uint32_t established;
324 uint32_t restarted_peers;
325 uint32_t implicit_eors;
326 uint32_t explicit_eors;
f188f2c4
DS		 327#define BGP_UPDATE_DELAY_DEF 0
328#define BGP_UPDATE_DELAY_MIN 0
329#define BGP_UPDATE_DELAY_MAX 3600
330
d62a17ae 331 /* BGP flags. */
d7c0a89a 332 uint32_t flags;
718e3744 333#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
334#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
335#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
336#define BGP_FLAG_MED_CONFED (1 << 3)
337#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
338#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
339#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
340#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
341#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
342#define BGP_FLAG_IMPORT_CHECK (1 << 9)
343#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 344#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 345#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 346#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 347#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 348#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 349#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 350#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 351#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 352#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 353#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 354#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 355
d62a17ae 356 /* BGP Per AF flags */
d7c0a89a 357 uint16_t af_flags[AFI_MAX][SAFI_MAX];
f4882003 358#define BGP_CONFIG_DAMPENING (1 << 0)
2c29b18a 359/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
f4882003
MK		 360#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
361#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
362#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
363#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
364/* import/export between address families */
365#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
366#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
367/* vrf-route leaking flags */
368#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
369#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
a8dadcf6 370#define BGP_DEFAULT_NAME "default"
154faa50 371
d62a17ae 372 /* Route table for next-hop lookup cache. */
373 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 374
d62a17ae 375 /* Route table for import-check */
376 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 377
d62a17ae 378 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 379
d62a17ae 380 struct hash *address_hash;
6aeb9e78 381
db0e1937
MK		 382 /* DB for all local tunnel-ips - used mainly for martian checks
383 Currently it only has all VxLan tunnel IPs*/
384 struct hash *tip_hash;
385
d62a17ae 386 /* Static route configuration. */
387 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 388
d62a17ae 389 /* Aggregate address configuration. */
390 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 391
d62a17ae 392 /* BGP routing information base. */
393 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 394
d62a17ae 395 /* BGP table route-map. */
396 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 397
d62a17ae 398 /* BGP redistribute configuration. */
399 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 400
318cac96 401 /* Allocate MPLS labels */
d7c0a89a 402 uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
318cac96 403
f3d32faa
PG		 404 /* Allocate hash entries to store policy routing information
405 * The hash are used to host pbr rules somewhere.
406 * Actually, pbr will only be used by flowspec
407 * those hash elements will have relationship together as
408 * illustrated in below diagram:
409 *
410 * pbr_action a <----- pbr_match i <--- pbr_match_entry 1..n
411 * <----- pbr_match j <--- pbr_match_entry 1..m
412 *
413 * - here in BGP structure, the list of match and actions will
414 * stand for the list of ipset sets, and table_ids in the kernel
415 * - the arrow above between pbr_match and pbr_action indicate
416 * that a backpointer permits match to find the action
417 * - the arrow betwen match_entry and match is a hash list
418 * contained in match, that lists the whole set of entries
419 */
420 struct hash *pbr_match_hash;
421 struct hash *pbr_action_hash;
422
d62a17ae 423 /* timer to re-evaluate neighbor default-originate route-maps */
424 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 425#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
426
d62a17ae 427 /* BGP distance configuration. */
d7c0a89a
QY		 428 uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
429 uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
430 uint8_t distance_local[AFI_MAX][SAFI_MAX];
d62a17ae 431
432 /* BGP default local-preference. */
d7c0a89a 433 uint32_t default_local_pref;
d62a17ae 434
435 /* BGP default subgroup pkt queue max */
d7c0a89a 436 uint32_t default_subgroup_pkt_queue_max;
d62a17ae 437
438 /* BGP default timer. */
d7c0a89a
QY		 439 uint32_t default_holdtime;
440 uint32_t default_keepalive;
d62a17ae 441
442 /* BGP graceful restart */
d7c0a89a
QY		 443 uint32_t restart_time;
444 uint32_t stalepath_time;
d62a17ae 445
446 /* Maximum-paths configuration */
447 struct bgp_maxpaths_cfg {
d7c0a89a
QY		 448 uint16_t maxpaths_ebgp;
449 uint16_t maxpaths_ibgp;
450 uint16_t ibgp_flags;
5e242b0d 451#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 452 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 453
555e09d4
QY		 454 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
455 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
456
37a333fe
QY		 457 /* Automatic coalesce adjust on/off */
458 bool heuristic_coalesce;
14b8641a
QY		 459 /* Actual coalesce time */
460 uint32_t coalesce_time;
adbac85e 461
f26845f9
QY		 462 /* Auto-shutdown new peers */
463 bool autoshutdown;
464
d7c0a89a 465 uint32_t addpath_tx_id;
d62a17ae 466 int addpath_tx_used[AFI_MAX][SAFI_MAX];
65efcfce
LB		 467
468#if ENABLE_BGP_VNC
d62a17ae 469 struct rfapi_cfg *rfapi_cfg;
470 struct rfapi *rfapi;
65efcfce 471#endif
19df7279 472
d62a17ae 473 /* EVPN related information */
14c1a7bf 474
d62a17ae 475 /* EVI hash table */
476 struct hash *vnihash;
14c1a7bf 477
1a98c087
MK		 478 /* EVPN enable - advertise gateway macip routes */
479 int advertise_gw_macip;
480
d62a17ae 481 /* EVPN enable - advertise local VNIs and their MACs etc. */
482 int advertise_all_vni;
14c1a7bf 483
bf1061d8
VB		 484 /* EVPN - use RFC 8365 to auto-derive RT */
485 int advertise_autort_rfc8365;
486
d62a17ae 487 /* Hash table of Import RTs to EVIs */
488 struct hash *import_rt_hash;
14c1a7bf 489
10ebe1ab
MK		 490 /* Hash table of VRF import RTs to VRFs */
491 struct hash *vrf_import_rt_hash;
492
fe1dc5a3
MK		 493 /* L3-VNI corresponding to this vrf */
494 vni_t l3vni;
495
496 /* router-mac to be used in mac-ip routes for this vrf */
497 struct ethaddr rmac;
498
b67a60d2 499 /* originator ip - to be used as NH for type-5 routes */
500 struct in_addr originator_ip;
501
fe1dc5a3
MK		 502 /* vrf flags */
503 uint32_t vrf_flags;
676f83b9 504#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 505#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
506#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
507#define BGP_VRF_RD_CFGD (1 << 3)
23e386ac
MK		 508#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
509
676f83b9 510
511 /* unique ID for auto derivation of RD for this vrf */
512 uint16_t vrf_rd_id;
513
92708db6 514 /* Automatically derived RD for this VRF */
515 struct prefix_rd vrf_prd_auto;
516
676f83b9 517 /* RD for this VRF */
518 struct prefix_rd vrf_prd;
c581d8b0
MK		 519
520 /* import rt list for the vrf instance */
521 struct list *vrf_import_rtl;
522
523 /* export rt list for the vrf instance */
524 struct list *vrf_export_rtl;
fe1dc5a3 525
6a8657d0
MK		 526 /* list of corresponding l2vnis (struct bgpevpn) */
527 struct list *l2vnis;
528
53c84f78
MK		 529 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
530 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
531
e70e9f8e 532 struct vpn_policy vpn_policy[AFI_MAX];
ddb5b488 533
d62a17ae 534 QOBJ_FIELDS
718e3744 535};
19df7279 536DECLARE_QOBJ_TYPE(bgp)
718e3744 537
2a3d5731 538#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 539
d62a17ae 540#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
541 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
542 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
543 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 544
718e3744 545/* BGP peer-group support. */
d62a17ae 546struct peer_group {
547 /* Name of the peer-group. */
548 char *name;
718e3744 549
d62a17ae 550 /* Pointer to BGP. */
551 struct bgp *bgp;
718e3744 552
d62a17ae 553 /* Peer-group client list. */
554 struct list *peer;
f14e6fdb 555
d62a17ae 556 /** Dynamic neighbor listening ranges */
557 struct list *listen_range[AFI_MAX];
558
559 /* Peer-group config */
560 struct peer *conf;
718e3744 561};
562
563/* BGP Notify message format. */
d62a17ae 564struct bgp_notify {
d7c0a89a
QY		 565 uint8_t code;
566 uint8_t subcode;
d62a17ae 567 char *data;
568 bgp_size_t length;
d7c0a89a 569 uint8_t *raw_data;
718e3744 570};
571
572/* Next hop self address. */
d62a17ae 573struct bgp_nexthop {
574 struct interface *ifp;
575 struct in_addr v4;
576 struct in6_addr v6_global;
577 struct in6_addr v6_local;
718e3744 578};
579
a82478b9
DS		 580/* BGP addpath values */
581#define BGP_ADDPATH_RX 1
582#define BGP_ADDPATH_TX 2
583#define BGP_ADDPATH_ID_LEN 4
584
adbac85e
DW		 585#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
586
718e3744 587/* BGP router distinguisher value. */
588#define BGP_RD_SIZE 8
589
d62a17ae 590struct bgp_rd {
d7c0a89a 591 uint8_t val[BGP_RD_SIZE];
718e3744 592};
593
2a3d5731
DW		 594#define RMAP_IN 0
595#define RMAP_OUT 1
596#define RMAP_MAX 2
fee0f4c6 597
65efcfce
LB		 598#include "filter.h"
599
718e3744 600/* BGP filter structure. */
d62a17ae 601struct bgp_filter {
602 /* Distribute-list. */
603 struct {
604 char *name;
605 struct access_list *alist;
606 } dlist[FILTER_MAX];
607
608 /* Prefix-list. */
609 struct {
610 char *name;
611 struct prefix_list *plist;
612 } plist[FILTER_MAX];
613
614 /* Filter-list. */
615 struct {
616 char *name;
617 struct as_list *aslist;
618 } aslist[FILTER_MAX];
619
620 /* Route-map. */
621 struct {
622 char *name;
623 struct route_map *map;
624 } map[RMAP_MAX];
625
626 /* Unsuppress-map. */
627 struct {
628 char *name;
629 struct route_map *map;
630 } usmap;
718e3744 631};
632
6d85b15b
JBD		 633/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
634 a peer who's AS is part of our Confederation. */
d62a17ae 635typedef enum {
636 BGP_PEER_IBGP = 1,
637 BGP_PEER_EBGP,
638 BGP_PEER_INTERNAL,
639 BGP_PEER_CONFED,
6d85b15b
JBD		 640} bgp_peer_sort_t;
641
d6661008
DS		 642/* BGP message header and packet size. */
643#define BGP_MARKER_SIZE 16
644#define BGP_HEADER_SIZE 19
645#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 646#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 647
3f9c7369
DS		 648/*
649 * Trigger delay for bgp_announce_route().
650 */
651#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
652#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
653
d62a17ae 654struct peer_af {
655 /* back pointer to the peer */
656 struct peer *peer;
3f9c7369 657
d62a17ae 658 /* which subgroup the peer_af belongs to */
659 struct update_subgroup *subgroup;
3f9c7369 660
d62a17ae 661 /* for being part of an update subgroup's peer list */
662 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 663
d62a17ae 664 /* for being part of a packet's peer list */
665 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 666
d62a17ae 667 struct bpacket *next_pkt_to_send;
3f9c7369 668
d62a17ae 669 /*
670 * Trigger timer for bgp_announce_route().
671 */
672 struct thread *t_announce_route;
3f9c7369 673
d62a17ae 674 afi_t afi;
675 safi_t safi;
676 int afid;
3f9c7369
DS		 677};
678
718e3744 679/* BGP neighbor structure. */
d62a17ae 680struct peer {
681 /* BGP structure. */
682 struct bgp *bgp;
683
684 /* reference count, primarily to allow bgp_process'ing of route_node's
685 * to be done after a struct peer is deleted.
686 *
687 * named 'lock' for hysterical reasons within Quagga.
688 */
689 int lock;
690
691 /* BGP peer group. */
692 struct peer_group *group;
693 uint64_t version[AFI_MAX][SAFI_MAX];
694
695 /* BGP peer_af structures, per configured AF on this peer */
696 struct peer_af *peer_af_array[BGP_AF_MAX];
697
698 /* Peer's remote AS number. */
699 int as_type;
700 as_t as;
701
702 /* Peer's local AS number. */
703 as_t local_as;
704
705 bgp_peer_sort_t sort;
706
707 /* Peer's Change local AS number. */
708 as_t change_local_as;
709
710 /* Remote router ID. */
711 struct in_addr remote_id;
712
713 /* Local router ID. */
714 struct in_addr local_id;
715
716 /* Packet receive and send buffer. */
424ab01d
QY		 717 pthread_mutex_t io_mtx; // guards ibuf, obuf
718 struct stream_fifo *ibuf; // packets waiting to be processed
719 struct stream_fifo *obuf; // packets waiting to be written
720
74ffbfe6
QY		 721 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
722 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 723
724 struct stream *curr; // the current packet being parsed
d62a17ae 725
726 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 727 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 728 * actual packet is then constructed by concatenating the two.
729 */
730 struct stream *scratch;
731
732 /* the doppelganger peer structure, due to dual TCP conn setup */
733 struct peer *doppelganger;
734
735 /* Status of the peer. */
736 int status;
737 int ostatus;
738
739 /* FSM events, stored for debug purposes.
740 * Note: uchar used for reduced memory usage.
741 */
742 unsigned char cur_event;
743 unsigned char last_event;
744 unsigned char last_major_event;
745
746 /* Peer index, used for dumping TABLE_DUMP_V2 format */
747 uint16_t table_dump_index;
748
749 /* Peer information */
750 int fd; /* File descriptor */
751 int ttl; /* TTL of TCP connection to the peer. */
752 int rtt; /* Estimated round-trip-time from TCP_INFO */
753 int gtsm_hops; /* minimum hopcount to peer */
754 char *desc; /* Description of the peer. */
755 unsigned short port; /* Destination port for peer */
756 char *host; /* Printable address of the peer. */
757 union sockunion su; /* Sockunion address of the peer. */
a80beece 758#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 759 time_t uptime; /* Last Up/Down time */
760 time_t readtime; /* Last read time */
761 time_t resettime; /* Last reset time */
762
d62a17ae 763 char *conf_if; /* neighbor interface config name. */
764 struct interface *ifp; /* corresponding interface */
765 char *ifname; /* bind interface name. */
766 char *update_if;
767 union sockunion *update_source;
768
769 union sockunion *su_local; /* Sockunion of local address. */
770 union sockunion *su_remote; /* Sockunion of remote address. */
771 int shared_network; /* Is this peer shared same network. */
772 struct bgp_nexthop nexthop; /* Nexthop */
773
774 /* Peer address family configuration. */
d7c0a89a
QY		 775 uint8_t afc[AFI_MAX][SAFI_MAX];
776 uint8_t afc_nego[AFI_MAX][SAFI_MAX];
777 uint8_t afc_adv[AFI_MAX][SAFI_MAX];
778 uint8_t afc_recv[AFI_MAX][SAFI_MAX];
d62a17ae 779
780 /* Capability flags (reset in bgp_stop) */
d7c0a89a 781 uint32_t cap;
718e3744 782#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
783#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
784#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
785#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
786#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 787#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
788#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 789#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
790#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 791#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
792#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 793#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
794#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 795#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
796#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 797#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
798#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 799
d62a17ae 800 /* Capability flags (reset in bgp_stop) */
d7c0a89a 801 uint32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 802#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
803#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
804#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
805#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
806#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
807#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 808#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
809#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 810#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
811#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
812#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
813#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 814#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
815#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
816#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 817
d62a17ae 818 /* Global configuration flags. */
d7c0a89a 819 uint32_t flags;
718e3744 820#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
821#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
822#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
823#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
824#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 825#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 826#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 827#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 828#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 829#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
830#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 831#define PEER_FLAG_LONESOUL (1 << 11)
832#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
833#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 834#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
65efcfce 835#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
02a82b47 836
d62a17ae 837 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
838 char *tx_shutdown_message;
718e3744 839
d62a17ae 840 /* NSF mode (graceful restart) */
d7c0a89a 841 uint8_t nsf[AFI_MAX][SAFI_MAX];
93406d87 842
04e1c5bb
QY		 843 /* Peer Per AF flags */
844 /*
845 * Parallel array to af_flags that indicates whether each flag
846 * originates from a peer-group or if it is config that is specific to
847 * this individual peer. If a flag is set independent of the
848 * peer-group the same bit should be set here. If this peer is a
849 * peer-group, this memory region should be all zeros. The assumption
850 * is that the default state for all flags is unset.
851 *
852 * Notes:
853 * - if a flag for an individual peer is unset, the corresponding
854 * override flag is unset and the peer is considered to be back in
855 * sync with the peer-group.
856 * - This does *not* contain the flag values, rather it contains
857 * whether the flag at the same position in af_flags is
858 * *peer-specific*.
859 */
860 uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
27c05d4d
PM		 861 /*
862 * Parallel array to af_flags that indicates whether each flag should
863 * be treated as regular (defaults to 0) or inverted (defaults to 1).
864 * If a flag is set to 1 by default, the same bit should be set here.
865 *
866 * Notes:
867 * - This does *not* contain the flag values, rather it contains
868 * whether the flag at the same position in af_flags is *regular* or
869 * *inverted*.
870 */
871 uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
04e1c5bb
QY		 872 /*
873 * Effective flags, computed by applying peer-group flags and then
874 * overriding with individual flags
875 */
d7c0a89a 876 uint32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 877#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
878#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
879#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
880#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
881#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
882#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
883#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
884#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
885#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
886#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
887#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
888#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
889#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
890#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
891#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
892#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 893#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 894#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 895#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
896#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 897#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 898#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 899#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 900#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
d93f7ffc 901#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 902#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 903#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 904
d62a17ae 905 /* MD5 password */
906 char *password;
718e3744 907
d62a17ae 908 /* default-originate route-map. */
909 struct {
910 char *name;
911 struct route_map *map;
912 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 913
d62a17ae 914 /* Peer status flags. */
d7c0a89a 915 uint16_t sflags;
718e3744 916#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
917#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
918#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
919#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
920#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 921#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
922#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 923
d62a17ae 924 /* Peer status af flags (reset in bgp_stop) */
d7c0a89a 925 uint16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 926#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
927#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 928#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
929#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
930#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
931#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 932
d62a17ae 933 /* Default attribute value for the peer. */
d7c0a89a 934 uint32_t config;
d93f7ffc
DW		 935#define PEER_CONFIG_TIMER (1 << 0) /* keepalive & holdtime */
936#define PEER_CONFIG_CONNECT (1 << 1) /* connect */
937#define PEER_CONFIG_ROUTEADV (1 << 2) /* route advertise */
d25e4efc
DS		 938#define PEER_GROUP_CONFIG_TIMER (1 << 3) /* timers from peer-group */
939
a4d82a8a
PZ		 940#define PEER_OR_GROUP_TIMER_SET(peer) \
941 (CHECK_FLAG(peer->config, PEER_CONFIG_TIMER) \
d25e4efc 942 || CHECK_FLAG(peer->config, PEER_GROUP_CONFIG_TIMER))
8ffedcea 943
1588f6f4
QY		 944 _Atomic uint32_t holdtime;
945 _Atomic uint32_t keepalive;
946 _Atomic uint32_t connect;
947 _Atomic uint32_t routeadv;
d62a17ae 948
949 /* Timer values. */
1588f6f4
QY		 950 _Atomic uint32_t v_start;
951 _Atomic uint32_t v_connect;
952 _Atomic uint32_t v_holdtime;
953 _Atomic uint32_t v_keepalive;
954 _Atomic uint32_t v_routeadv;
955 _Atomic uint32_t v_pmax_restart;
956 _Atomic uint32_t v_gr_restart;
d62a17ae 957
958 /* Threads. */
959 struct thread *t_read;
424ab01d 960 struct thread *t_write;
d62a17ae 961 struct thread *t_start;
387f984e
QY		 962 struct thread *t_connect_check_r;
963 struct thread *t_connect_check_w;
d62a17ae 964 struct thread *t_connect;
965 struct thread *t_holdtime;
d62a17ae 966 struct thread *t_routeadv;
967 struct thread *t_pmax_restart;
968 struct thread *t_gr_restart;
969 struct thread *t_gr_stale;
56257a44 970 struct thread *t_generate_updgrp_packets;
424ab01d 971 struct thread *t_process_packet;
d62a17ae 972
49507a6f 973 /* Thread flags. */
1588f6f4 974 _Atomic uint16_t thread_flags;
b750b0ba
QY		 975#define PEER_THREAD_WRITES_ON (1 << 0)
976#define PEER_THREAD_READS_ON (1 << 1)
977#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 978 /* workqueues */
979 struct work_queue *clear_node_queue;
980
a4d82a8a
PZ		 981#define PEER_TOTAL_RX(peer) \
982 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
983 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
984 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
985 + atomic_load_explicit(&peer->refresh_in, \
986 memory_order_relaxed) \
987 + atomic_load_explicit(&peer->keepalive_in, \
988 memory_order_relaxed) \
989 + atomic_load_explicit(&peer->dynamic_cap_in, \
990 memory_order_relaxed)
991
992#define PEER_TOTAL_TX(peer) \
993 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
994 + atomic_load_explicit(&peer->update_out, \
995 memory_order_relaxed) \
996 + atomic_load_explicit(&peer->notify_out, \
997 memory_order_relaxed) \
998 + atomic_load_explicit(&peer->refresh_out, \
999 memory_order_relaxed) \
1000 + atomic_load_explicit(&peer->keepalive_out, \
1001 memory_order_relaxed) \
1002 + atomic_load_explicit(&peer->dynamic_cap_out, \
1003 memory_order_relaxed)
0112e9e0 1004
d62a17ae 1005 /* Statistics field */
996c9314
LB		 1006 _Atomic uint32_t open_in; /* Open message input count */
1007 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 1008 _Atomic uint32_t update_in; /* Update message input count */
1009 _Atomic uint32_t update_out; /* Update message ouput count */
1010 _Atomic time_t update_time; /* Update message received time. */
1011 _Atomic uint32_t keepalive_in; /* Keepalive input count */
1012 _Atomic uint32_t keepalive_out; /* Keepalive output count */
1013 _Atomic uint32_t notify_in; /* Notify input count */
1014 _Atomic uint32_t notify_out; /* Notify output count */
1015 _Atomic uint32_t refresh_in; /* Route Refresh input count */
1016 _Atomic uint32_t refresh_out; /* Route Refresh output count */
1017 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 1018 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 1019
1020 /* BGP state count */
d7c0a89a
QY		 1021 uint32_t established; /* Established */
1022 uint32_t dropped; /* Dropped */
d62a17ae 1023
1024 /* Update delay related fields */
d7c0a89a 1025 uint8_t update_delay_over; /* When this is set, BGP is no more waiting
d62a17ae 1026 for EOR */
1027
1028 /* Syncronization list and time. */
1029 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
1030 time_t synctime;
1588f6f4
QY		 1031 /* timestamp when the last UPDATE msg was written */
1032 _Atomic time_t last_write;
1033 /* timestamp when the last msg was written */
1034 _Atomic time_t last_update;
d62a17ae 1035
1036 /* Send prefix count. */
1037 unsigned long scount[AFI_MAX][SAFI_MAX];
1038
d62a17ae 1039 /* Notify data. */
1040 struct bgp_notify notify;
1041
d62a17ae 1042 /* Filter structure. */
1043 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
1044
70ee29b4
PM		 1045 /*
1046 * Parallel array to filter that indicates whether each filter
1047 * originates from a peer-group or if it is config that is specific to
1048 * this individual peer. If a filter is set independent of the
1049 * peer-group the appropriate bit should be set here. If this peer is a
1050 * peer-group, this memory region should be all zeros. The assumption
1051 * is that the default state for all flags is unset. Due to filters
1052 * having a direction (e.g. in/out/...), this array has a third
1053 * dimension for storing the overrides independently per direction.
1054 *
1055 * Notes:
1056 * - if a filter for an individual peer is unset, the corresponding
1057 * override flag is unset and the peer is considered to be back in
1058 * sync with the peer-group.
1059 * - This does *not* contain the filter values, rather it contains
1060 * whether the filter in filter (struct bgp_filter) is peer-specific.
1061 */
1062 uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
1063 ? FILTER_MAX
1064 : RMAP_MAX];
1065#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
1066#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
1067#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
1068#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
1069#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
1070
d62a17ae 1071 /* ORF Prefix-list */
1072 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
1073
1074 /* Text description of last attribute rcvd */
1075 char rcvd_attr_str[BUFSIZ];
1076
1077 /* Track if we printed the attribute in debugs */
1078 int rcvd_attr_printed;
1079
1080 /* Prefix count. */
1081 unsigned long pcount[AFI_MAX][SAFI_MAX];
1082
1083 /* Max prefix count. */
1084 unsigned long pmax[AFI_MAX][SAFI_MAX];
d7c0a89a
QY		 1085 uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
1086 uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 1087#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 1088
d62a17ae 1089 /* allowas-in. */
1090 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 1091
d62a17ae 1092 /* weight */
1093 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 1094
d62a17ae 1095 /* peer reset cause */
1096 char last_reset;
e0701b79 1097#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
1098#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
1099#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
1100#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
1101#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
1102#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
1103#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
1104#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
1105#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
1106#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
1107#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
1108#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
1109#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
1110#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
1111#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
1112#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
1113#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
1114#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
1115#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
1116#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
1117#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 1118#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 1119#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 1120#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 1121#define PEER_DOWN_IF_DOWN 25 /* Interface down */
1122#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 1123 unsigned long last_reset_cause_size;
d7c0a89a 1124 uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 1125
d62a17ae 1126 /* The kind of route-map Flags.*/
d7c0a89a 1127 uint8_t rmap_type;
ac41b2a2 1128#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1129#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1130#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1131#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1132#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1133#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1134#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1135#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1136
d62a17ae 1137 /* peer specific BFD information */
1138 struct bfd_info *bfd_info;
04b6bdc0 1139
d62a17ae 1140 /* hostname and domainname advertised by host */
1141 char *hostname;
1142 char *domainname;
19df7279 1143
d62a17ae 1144 QOBJ_FIELDS
718e3744 1145};
19df7279 1146DECLARE_QOBJ_TYPE(peer)
718e3744 1147
598ce6bd
PM		 1148/* Inherit peer attribute from peer-group. */
1149#define PEER_ATTR_INHERIT(peer, attr) ((peer)->attr = (peer)->group->conf->attr)
1150#define PEER_STR_ATTR_INHERIT(mt, peer, attr) \
1151 do { \
1152 if ((peer)->attr) \
1153 XFREE(mt, (peer)->attr); \
1154 if ((peer)->group->conf->attr) \
1155 (peer)->attr = XSTRDUP(mt, (peer)->group->conf->attr); \
1156 else \
1157 (peer)->attr = NULL; \
1158 } while (0)
1159
ad4cbda1 1160/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1161#define BGP_PEER_START_SUPPRESSED(P) \
1162 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1163 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1164
0df7c91f
PJ		 1165#define PEER_PASSWORD_MINLEN (1)
1166#define PEER_PASSWORD_MAXLEN (80)
1167
718e3744 1168/* This structure's member directly points incoming packet data
1169 stream. */
d62a17ae 1170struct bgp_nlri {
1171 /* AFI. */
a46a2e9b 1172 uint16_t afi; /* iana_afi_t */
718e3744 1173
d62a17ae 1174 /* SAFI. */
a46a2e9b 1175 uint8_t safi; /* iana_safi_t */
718e3744 1176
d62a17ae 1177 /* Pointer to NLRI byte stream. */
d7c0a89a 1178 uint8_t *nlri;
718e3744 1179
d62a17ae 1180 /* Length of whole NLRI. */
1181 bgp_size_t length;
718e3744 1182};
1183
1184/* BGP versions. */
1185#define BGP_VERSION_4 4
718e3744 1186
1187/* Default BGP port number. */
1188#define BGP_PORT_DEFAULT 179
1189
718e3744 1190/* BGP minimum message size. */
1191#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1192#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1193#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1194#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1195#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1196#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1197
1198/* BGP message types. */
1199#define BGP_MSG_OPEN 1
1200#define BGP_MSG_UPDATE 2
1201#define BGP_MSG_NOTIFY 3
1202#define BGP_MSG_KEEPALIVE 4
1203#define BGP_MSG_ROUTE_REFRESH_NEW 5
1204#define BGP_MSG_CAPABILITY 6
1205#define BGP_MSG_ROUTE_REFRESH_OLD 128
1206
1207/* BGP open optional parameter. */
1208#define BGP_OPEN_OPT_AUTH 1
1209#define BGP_OPEN_OPT_CAP 2
1210
1211/* BGP4 attribute type codes. */
1212#define BGP_ATTR_ORIGIN 1
1213#define BGP_ATTR_AS_PATH 2
1214#define BGP_ATTR_NEXT_HOP 3
1215#define BGP_ATTR_MULTI_EXIT_DISC 4
1216#define BGP_ATTR_LOCAL_PREF 5
1217#define BGP_ATTR_ATOMIC_AGGREGATE 6
1218#define BGP_ATTR_AGGREGATOR 7
1219#define BGP_ATTR_COMMUNITIES 8
1220#define BGP_ATTR_ORIGINATOR_ID 9
1221#define BGP_ATTR_CLUSTER_LIST 10
1222#define BGP_ATTR_DPA 11
1223#define BGP_ATTR_ADVERTISER 12
1224#define BGP_ATTR_RCID_PATH 13
1225#define BGP_ATTR_MP_REACH_NLRI 14
1226#define BGP_ATTR_MP_UNREACH_NLRI 15
1227#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1228#define BGP_ATTR_AS4_PATH 17
1229#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1230#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1231#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1232#define BGP_ATTR_ENCAP 23
57d187bc 1233#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1234#define BGP_ATTR_PREFIX_SID 40
65efcfce
LB		 1235#if ENABLE_BGP_VNC
1236#define BGP_ATTR_VNC 255
1237#endif
718e3744 1238
1239/* BGP update origin. */
1240#define BGP_ORIGIN_IGP 0
1241#define BGP_ORIGIN_EGP 1
1242#define BGP_ORIGIN_INCOMPLETE 2
1243
1244/* BGP notify message codes. */
1245#define BGP_NOTIFY_HEADER_ERR 1
1246#define BGP_NOTIFY_OPEN_ERR 2
1247#define BGP_NOTIFY_UPDATE_ERR 3
1248#define BGP_NOTIFY_HOLD_ERR 4
1249#define BGP_NOTIFY_FSM_ERR 5
1250#define BGP_NOTIFY_CEASE 6
1251#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1252
4b4e07d2
DT		 1253#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1254
718e3744 1255/* BGP_NOTIFY_HEADER_ERR sub codes. */
1256#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1257#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1258#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1259
1260/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1261#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1262#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1263#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1264#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1265#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1266#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1267#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1268#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1269
1270/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1271#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1272#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1273#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1274#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1275#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1276#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1277#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1278#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1279#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1280#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1281#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1282
4b4e07d2 1283/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1284#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1285#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1286#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1287#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1288#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1289#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1290#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1291#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1292
1293/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1294#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1295#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1296#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1297
1298/* BGP finite state machine status. */
1299#define Idle 1
1300#define Connect 2
1301#define Active 3
1302#define OpenSent 4
1303#define OpenConfirm 5
1304#define Established 6
ca058a30
PJ		 1305#define Clearing 7
1306#define Deleted 8
1307#define BGP_STATUS_MAX 9
718e3744 1308
1309/* BGP finite state machine events. */
1310#define BGP_Start 1
1311#define BGP_Stop 2
1312#define TCP_connection_open 3
1313#define TCP_connection_closed 4
1314#define TCP_connection_open_failed 5
1315#define TCP_fatal_error 6
1316#define ConnectRetry_timer_expired 7
1317#define Hold_Timer_expired 8
1318#define KeepAlive_timer_expired 9
1319#define Receive_OPEN_message 10
1320#define Receive_KEEPALIVE_message 11
1321#define Receive_UPDATE_message 12
1322#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1323#define Clearing_Completed 14
1324#define BGP_EVENTS_MAX 15
718e3744 1325
1326/* BGP timers default value. */
8efe88ea 1327/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1328#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1329#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1330#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1331#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1332#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1333#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1334
1335/* BGP default local preference. */
1336#define BGP_DEFAULT_LOCAL_PREF 100
1337
7f323236
DW		 1338/* BGP local-preference to send when 'bgp graceful-shutdown'
1339 * is configured */
1340#define BGP_GSHUT_LOCAL_PREF 0
1341
3f9c7369
DS		 1342/* BGP default subgroup packet queue max . */
1343#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1344
538621f2 1345/* BGP graceful restart */
1346#define BGP_DEFAULT_RESTART_TIME 120
1347#define BGP_DEFAULT_STALEPATH_TIME 360
1348
718e3744 1349/* BGP uptime string length. */
1350#define BGP_UPTIME_LEN 25
1351
1352/* Default configuration settings for bgpd. */
1353#define BGP_VTY_PORT 2605
718e3744 1354#define BGP_DEFAULT_CONFIG "bgpd.conf"
1355
1356/* Check AS path loop when we send NLRI. */
1357/* #define BGP_SEND_ASPATH_CHECK */
1358
f14e6fdb
DS		 1359/* BGP Dynamic Neighbors feature */
1360#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1361#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1362#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1363
718e3744 1364/* Flag for peer_clear_soft(). */
d62a17ae 1365enum bgp_clear_type {
1366 BGP_CLEAR_SOFT_NONE,
1367 BGP_CLEAR_SOFT_OUT,
1368 BGP_CLEAR_SOFT_IN,
1369 BGP_CLEAR_SOFT_BOTH,
1370 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1371};
1372
1373/* Macros. */
424ab01d 1374#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1375#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1376#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1377 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1378
718e3744 1379/* BGP error codes. */
1380#define BGP_SUCCESS 0
1381#define BGP_ERR_INVALID_VALUE -1
1382#define BGP_ERR_INVALID_FLAG -2
1383#define BGP_ERR_INVALID_AS -3
1384#define BGP_ERR_INVALID_BGP -4
1385#define BGP_ERR_PEER_GROUP_MEMBER -5
1386#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1387#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1388#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1389#define BGP_ERR_PEER_GROUP_MISMATCH -9
1390#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1391#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1392#define BGP_ERR_AS_MISMATCH -12
1393#define BGP_ERR_PEER_FLAG_CONFLICT -13
1394#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1395#define BGP_ERR_PEER_FILTER_CONFLICT -15
1396#define BGP_ERR_NOT_INTERNAL_PEER -16
1397#define BGP_ERR_REMOVE_PRIVATE_AS -17
1398#define BGP_ERR_AF_UNCONFIGURED -18
1399#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1400#define BGP_ERR_INSTANCE_MISMATCH -20
1401#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1402#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1403#define BGP_ERR_TCPSIG_FAILED -23
1404#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1405#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1406#define BGP_ERR_NO_INTERFACE_CONFIG -26
1407#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1408#define BGP_ERR_AS_OVERRIDE -28
1409#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1410#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1411#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1412#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1413#define BGP_ERR_MAX -33
63fa10b5 1414#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1415#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1416
3f9c7369
DS		 1417/*
1418 * Enumeration of different policy kinds a peer can be configured with.
1419 */
d62a17ae 1420typedef enum {
1421 BGP_POLICY_ROUTE_MAP,
1422 BGP_POLICY_FILTER_LIST,
1423 BGP_POLICY_PREFIX_LIST,
1424 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1425} bgp_policy_type_e;
1426
718e3744 1427extern struct bgp_master *bm;
37fe7731 1428extern unsigned int multipath_num;
718e3744 1429
718e3744 1430/* Prototypes. */
d62a17ae 1431extern void bgp_terminate(void);
1432extern void bgp_reset(void);
1433extern time_t bgp_clock(void);
1434extern void bgp_zclient_reset(void);
1435extern int bgp_nexthop_set(union sockunion *, union sockunion *,
1436 struct bgp_nexthop *, struct peer *);
1437extern struct bgp *bgp_get_default(void);
1438extern struct bgp *bgp_lookup(as_t, const char *);
1439extern struct bgp *bgp_lookup_by_name(const char *);
1440extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1441extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1442extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1443extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1444extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1445extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1446extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1447extern struct peer_group *peer_group_get(struct bgp *, const char *);
1448extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1449 union sockunion *,
1450 struct peer_group *);
1451extern struct prefix *
1452peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1453extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1454 struct prefix *,
1455 struct prefix **);
1456extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1457 union sockunion *);
1458extern void peer_drop_dynamic_neighbor(struct peer *);
28066f4b
DS		 1459
1460/*
1461 * Peers are incredibly easy to memory leak
1462 * due to the various ways that they are actually used
1463 * Provide some functionality to debug locks and unlocks
1464 */
1465extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1466extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1467#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1468#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1469
d62a17ae 1470extern bgp_peer_sort_t peer_sort(struct peer *peer);
1471extern int peer_active(struct peer *);
1472extern int peer_active_nego(struct peer *);
1473extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1474extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1475 as_t, as_t, int, afi_t, safi_t,
1476 struct peer_group *);
1477extern struct peer *peer_create_accept(struct bgp *);
1478extern void peer_xfer_config(struct peer *dst, struct peer *src);
d7c0a89a 1479extern char *peer_uptime(time_t, char *, size_t, uint8_t, json_object *);
856ca177 1480
d62a17ae 1481extern int bgp_config_write(struct vty *);
6b0655a2 1482
d62a17ae 1483extern void bgp_master_init(struct thread_master *master);
718e3744 1484
d62a17ae 1485extern void bgp_init(void);
419dfe6a 1486extern void bgp_pthreads_run(void);
2d4ee774 1487extern void bgp_pthreads_finish(void);
d62a17ae 1488extern void bgp_route_map_init(void);
1489extern void bgp_session_reset(struct peer *);
718e3744 1490
d62a17ae 1491extern int bgp_option_set(int);
1492extern int bgp_option_unset(int);
1493extern int bgp_option_check(int);
718e3744 1494
d62a17ae 1495extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1496extern void bgp_instance_up(struct bgp *);
1497extern void bgp_instance_down(struct bgp *);
1498extern int bgp_delete(struct bgp *);
718e3744 1499
e5619c28
PG		 1500extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
1501 vrf_id_t old_vrf_id, bool create);
1502
d62a17ae 1503extern int bgp_flag_set(struct bgp *, int);
1504extern int bgp_flag_unset(struct bgp *, int);
1505extern int bgp_flag_check(struct bgp *, int);
718e3744 1506
d62a17ae 1507extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1508extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1509
d62a17ae 1510extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1511extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1512
d62a17ae 1513extern int bgp_confederation_id_set(struct bgp *, as_t);
1514extern int bgp_confederation_id_unset(struct bgp *);
1515extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1516
d62a17ae 1517extern int bgp_confederation_peers_add(struct bgp *, as_t);
1518extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1519
d7c0a89a 1520extern int bgp_timers_set(struct bgp *, uint32_t keepalive, uint32_t holdtime);
d62a17ae 1521extern int bgp_timers_unset(struct bgp *);
718e3744 1522
d7c0a89a 1523extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
d62a17ae 1524extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1525
d7c0a89a 1526extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
d62a17ae 1527extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1528
d62a17ae 1529extern int bgp_listen_limit_set(struct bgp *, int);
1530extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1531
d62a17ae 1532extern int bgp_update_delay_active(struct bgp *);
1533extern int bgp_update_delay_configured(struct bgp *);
318cac96 1534extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1535extern void peer_as_change(struct peer *, as_t, int);
1536extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1537 int, afi_t, safi_t);
1538extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1539extern int peer_delete(struct peer *peer);
1540extern int peer_group_delete(struct peer_group *);
1541extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1542extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1543
d62a17ae 1544extern int peer_activate(struct peer *, afi_t, safi_t);
1545extern int peer_deactivate(struct peer *, afi_t, safi_t);
1546extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1547
d62a17ae 1548extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1549 struct peer_group *, as_t *);
1550extern int peer_group_unbind(struct bgp *, struct peer *, struct peer_group *);
718e3744 1551
d7c0a89a
QY		 1552extern int peer_flag_set(struct peer *, uint32_t);
1553extern int peer_flag_unset(struct peer *, uint32_t);
718e3744 1554
d7c0a89a
QY		 1555extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
1556extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
1557extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
598ce6bd 1558extern void peer_af_flag_inherit(struct peer *, afi_t, safi_t, uint32_t);
718e3744 1559
d62a17ae 1560extern int peer_ebgp_multihop_set(struct peer *, int);
1561extern int peer_ebgp_multihop_unset(struct peer *);
1562extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1563
d62a17ae 1564extern int peer_description_set(struct peer *, const char *);
1565extern int peer_description_unset(struct peer *);
718e3744 1566
d62a17ae 1567extern int peer_update_source_if_set(struct peer *, const char *);
1568extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1569extern int peer_update_source_unset(struct peer *);
718e3744 1570
d62a17ae 1571extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1572 const char *);
1573extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1574
d7c0a89a 1575extern int peer_port_set(struct peer *, uint16_t);
d62a17ae 1576extern int peer_port_unset(struct peer *);
718e3744 1577
d7c0a89a 1578extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
d62a17ae 1579extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1580
d7c0a89a
QY		 1581extern int peer_timers_set(struct peer *, uint32_t keepalive,
1582 uint32_t holdtime);
d62a17ae 1583extern int peer_timers_unset(struct peer *);
718e3744 1584
d7c0a89a 1585extern int peer_timers_connect_set(struct peer *, uint32_t);
d62a17ae 1586extern int peer_timers_connect_unset(struct peer *);
718e3744 1587
d7c0a89a 1588extern int peer_advertise_interval_set(struct peer *, uint32_t);
d62a17ae 1589extern int peer_advertise_interval_unset(struct peer *);
718e3744 1590
d62a17ae 1591extern void peer_interface_set(struct peer *, const char *);
1592extern void peer_interface_unset(struct peer *);
718e3744 1593
d62a17ae 1594extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1595extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1596
d62a17ae 1597extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1598extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1599
d62a17ae 1600extern int peer_local_as_set(struct peer *, as_t, int, int);
1601extern int peer_local_as_unset(struct peer *);
718e3744 1602
d62a17ae 1603extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1604 const char *);
1605extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1606
d62a17ae 1607extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1608extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1609
d62a17ae 1610extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1611extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1612
d62a17ae 1613extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
0df7c91f 1614
d62a17ae 1615extern int peer_password_set(struct peer *, const char *);
1616extern int peer_password_unset(struct peer *);
0df7c91f 1617
d62a17ae 1618extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1619
d7c0a89a
QY		 1620extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, uint32_t,
1621 uint8_t, int, uint16_t);
d62a17ae 1622extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1623
d62a17ae 1624extern int peer_clear(struct peer *, struct listnode **);
1625extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1626
d62a17ae 1627extern int peer_ttl_security_hops_set(struct peer *, int);
1628extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1629
d62a17ae 1630extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1631extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1632
d62a17ae 1633extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1634extern void bgp_route_map_terminate(void);
16286195 1635
d62a17ae 1636extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1637
5c525538 1638extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1639 afi_t *afi, safi_t *safi);
1640extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1641 iana_afi_t *pkt_afi,
1642 iana_safi_t *pkt_safi);
9cabb64b 1643
d62a17ae 1644extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1645extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1646extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1647
ffd0c037 1648extern void bgp_close(void);
92375c91
JB		 1649extern void bgp_free(struct bgp *);
1650
1651static inline struct bgp *bgp_lock(struct bgp *bgp)
1652{
1653 bgp->lock++;
1654 return bgp;
1655}
1656
1657static inline void bgp_unlock(struct bgp *bgp)
1658{
1659 assert(bgp->lock > 0);
1660 if (--bgp->lock == 0)
1661 bgp_free(bgp);
1662}
ffd0c037 1663
d62a17ae 1664static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1665{
d62a17ae 1666 switch (afi) {
1667 case AFI_IP:
1668 switch (safi) {
1669 case SAFI_UNICAST:
1670 return BGP_AF_IPV4_UNICAST;
1671 break;
1672 case SAFI_MULTICAST:
1673 return BGP_AF_IPV4_MULTICAST;
1674 break;
1675 case SAFI_LABELED_UNICAST:
1676 return BGP_AF_IPV4_LBL_UNICAST;
1677 break;
1678 case SAFI_MPLS_VPN:
1679 return BGP_AF_IPV4_VPN;
1680 break;
1681 case SAFI_ENCAP:
1682 return BGP_AF_IPV4_ENCAP;
1683 break;
7c40bf39 1684 case SAFI_FLOWSPEC:
1685 return BGP_AF_IPV4_FLOWSPEC;
d62a17ae 1686 default:
1687 return BGP_AF_MAX;
1688 break;
1689 }
1690 break;
1691 case AFI_IP6:
1692 switch (safi) {
1693 case SAFI_UNICAST:
1694 return BGP_AF_IPV6_UNICAST;
1695 break;
1696 case SAFI_MULTICAST:
1697 return BGP_AF_IPV6_MULTICAST;
1698 break;
1699 case SAFI_LABELED_UNICAST:
1700 return BGP_AF_IPV6_LBL_UNICAST;
1701 break;
1702 case SAFI_MPLS_VPN:
1703 return BGP_AF_IPV6_VPN;
1704 break;
1705 case SAFI_ENCAP:
1706 return BGP_AF_IPV6_ENCAP;
1707 break;
7c40bf39 1708 case SAFI_FLOWSPEC:
1709 return BGP_AF_IPV6_FLOWSPEC;
d62a17ae 1710 default:
1711 return BGP_AF_MAX;
1712 break;
1713 }
1714 break;
1715 case AFI_L2VPN:
1716 switch (safi) {
1717 case SAFI_EVPN:
1718 return BGP_AF_L2VPN_EVPN;
1719 break;
1720 default:
1721 return BGP_AF_MAX;
1722 break;
1723 }
3f9c7369 1724 default:
d62a17ae 1725 return BGP_AF_MAX;
1726 break;
3f9c7369 1727 }
3f9c7369
DS		 1728}
1729
c8560b44 1730/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1731static inline int peer_group_active(struct peer *peer)
3f9c7369 1732{
d62a17ae 1733 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1734 return 1;
1735 return 0;
3f9c7369
DS		 1736}
1737
1738/* If peer is negotiated at least one address family return 1. */
d62a17ae 1739static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1740{
d62a17ae 1741 if (peer->afc_nego[afi][SAFI_UNICAST]
1742 || peer->afc_nego[afi][SAFI_MULTICAST]
1743 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1744 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1745 || peer->afc_nego[afi][SAFI_ENCAP]
7c40bf39 1746 || peer->afc_nego[afi][SAFI_FLOWSPEC]
d62a17ae 1747 || peer->afc_nego[afi][SAFI_EVPN])
1748 return 1;
1749 return 0;
3f9c7369
DS		 1750}
1751
f14e6fdb 1752/* If at least one address family activated for group, return 1. */
d62a17ae 1753static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1754{
d62a17ae 1755 struct peer *peer = group->conf;
1756
1757 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1758 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
7c40bf39 1759 || peer->afc[AFI_IP][SAFI_FLOWSPEC]
d62a17ae 1760 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1761 || peer->afc[AFI_IP6][SAFI_UNICAST]
1762 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1763 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1764 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1765 || peer->afc[AFI_IP6][SAFI_ENCAP]
7c40bf39 1766 || peer->afc[AFI_IP6][SAFI_FLOWSPEC]
ba0fcaf6 1767 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1768 return 1;
1769 return 0;
f14e6fdb
DS		 1770}
1771
d62a17ae 1772static inline char *timestamp_string(time_t ts)
3f9c7369 1773{
d62a17ae 1774 time_t tbuf;
1775 tbuf = time(NULL) - (bgp_clock() - ts);
1776 return ctime(&tbuf);
3f9c7369
DS		 1777}
1778
d62a17ae 1779static inline int peer_established(struct peer *peer)
3f9c7369 1780{
d62a17ae 1781 if (peer->status == Established)
1782 return 1;
1783 return 0;
3f9c7369
DS		 1784}
1785
d62a17ae 1786static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1787{
d62a17ae 1788 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1789}
1790
d62a17ae 1791static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1792{
d62a17ae 1793 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1794}
1795
d1be1f08 1796/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1797static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1798{
d62a17ae 1799 struct vrf *vrf;
d1be1f08 1800
d62a17ae 1801 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1802 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1803 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1804 vrf = vrf_lookup_by_name(bgp->name);
1805 else
1806 vrf = NULL;
d1be1f08 1807
d62a17ae 1808 return vrf;
d1be1f08 1809}
1810
1811/* Link BGP instance to VRF. */
d62a17ae 1812static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1813{
d62a17ae 1814 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1815 if (vrf->info != (void *)bgp)
1816 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1817}
1818
1819/* Unlink BGP instance from VRF. */
d62a17ae 1820static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1821{
d62a17ae 1822 if (vrf->info == (void *)bgp) {
1823 vrf->info = NULL;
1824 bgp_unlock(bgp);
1825 }
1826 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1827}
1828
d62a17ae 1829extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1830
1831/* For benefit of rfapi */
d62a17ae 1832extern struct peer *peer_new(struct bgp *bgp);
65efcfce 1833
00d252cb 1834#endif /* _QUAGGA_BGPD_H */
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