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bgpd: provide a match clause to match EVPN default route
[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
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"
718e3744 40
04b6bdc0 41#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 42#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 43
5c81b96a 44/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
45#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
46
3f9c7369
DS		 47struct update_subgroup;
48struct bpacket;
49
0299c004
DS		 50/*
51 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 52 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
53 * behavior
0299c004
DS		 54 * in the system.
55 */
d62a17ae 56enum { AS_UNSPECIFIED = 0,
57 AS_SPECIFIED,
58 AS_INTERNAL,
59 AS_EXTERNAL,
0299c004
DS		 60};
61
718e3744 62/* Typedef BGP specific types. */
0b2aa3a0
PJ		 63typedef u_int32_t as_t;
64typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
718e3744 65typedef u_int16_t bgp_size_t;
66
d62a17ae 67#define max(a, b) \
68 ({ \
69 __typeof__(a) _a = (a); \
70 __typeof__(b) _b = (b); \
71 _a > _b ? _a : _b; \
72 })
73
74enum bgp_af_index {
75 BGP_AF_START,
76 BGP_AF_IPV4_UNICAST = BGP_AF_START,
77 BGP_AF_IPV4_MULTICAST,
78 BGP_AF_IPV4_VPN,
79 BGP_AF_IPV6_UNICAST,
80 BGP_AF_IPV6_MULTICAST,
81 BGP_AF_IPV6_VPN,
82 BGP_AF_IPV4_ENCAP,
83 BGP_AF_IPV6_ENCAP,
84 BGP_AF_L2VPN_EVPN,
85 BGP_AF_IPV4_LBL_UNICAST,
86 BGP_AF_IPV6_LBL_UNICAST,
87 BGP_AF_MAX
3f9c7369
DS		 88};
89
d62a17ae 90#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 91
d62a17ae 92#define FOREACH_AFI_SAFI(afi, safi) \
93 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
94 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 95
718e3744 96/* BGP master for system wide configurations and variables. */
d62a17ae 97struct bgp_master {
98 /* BGP instance list. */
99 struct list *bgp;
100
101 /* BGP thread master. */
102 struct thread_master *master;
718e3744 103
0ca8b79f 104/* BGP pthreads. */
424ab01d 105#define PTHREAD_IO (1 << 1)
0ca8b79f 106#define PTHREAD_KEEPALIVES (1 << 2)
2d4ee774 107
d62a17ae 108 /* work queues */
109 struct work_queue *process_main_queue;
87d4a781 110
d62a17ae 111 /* Listening sockets */
112 struct list *listen_sockets;
718e3744 113
d62a17ae 114 /* BGP port number. */
115 u_int16_t port;
3a02d1f7 116
d62a17ae 117 /* Listener address */
118 char *address;
718e3744 119
d62a17ae 120 /* BGP start time. */
121 time_t start_time;
122
123 /* Various BGP global configuration. */
124 u_char options;
718e3744 125#define BGP_OPT_NO_FIB (1 << 0)
126#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
127#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 128#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369 129
d62a17ae 130 uint64_t updgrp_idspace;
131 uint64_t subgrp_idspace;
5fe9f963 132
d62a17ae 133 /* timer to dampen route map changes */
134 struct thread *t_rmap_update; /* Handle route map updates */
135 u_int32_t rmap_update_timer; /* Route map update timer */
136 /* $FRR indent$ */
137 /* clang-format off */
5fe9f963 138#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 139
e9eb5f63 140 /* Id space for automatic RD derivation for an EVI/VRF */
141 bitfield_t rd_idspace;
142
d62a17ae 143 QOBJ_FIELDS
718e3744 144};
19df7279 145DECLARE_QOBJ_TYPE(bgp_master)
718e3744 146
73ac8160 147/* BGP route-map structure. */
d62a17ae 148struct bgp_rmap {
149 char *name;
150 struct route_map *map;
73ac8160
DS		 151};
152
d62a17ae 153struct bgp_redist {
154 u_short instance;
7c8ff89e 155
d62a17ae 156 /* BGP redistribute metric configuration. */
157 u_char redist_metric_flag;
158 u_int32_t redist_metric;
7c8ff89e 159
d62a17ae 160 /* BGP redistribute route-map. */
161 struct bgp_rmap rmap;
7c8ff89e
DS		 162};
163
ad4cbda1 164/*
165 * Type of 'struct bgp'.
166 * - Default: The default instance
167 * - VRF: A specific (non-default) VRF
168 * - View: An instance used for route exchange
169 * The "default" instance is treated separately to simplify the code. Note
170 * that if deployed in a Multi-VRF environment, it may not exist.
171 */
d62a17ae 172enum bgp_instance_type {
173 BGP_INSTANCE_TYPE_DEFAULT,
174 BGP_INSTANCE_TYPE_VRF,
175 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 176};
177
718e3744 178/* BGP instance structure. */
d62a17ae 179struct bgp {
180 /* AS number of this BGP instance. */
181 as_t as;
182
183 /* Name of this BGP instance. */
184 char *name;
185
186 /* Type of instance and VRF id. */
187 enum bgp_instance_type inst_type;
188 vrf_id_t vrf_id;
189
190 /* Reference count to allow peer_delete to finish after bgp_delete */
191 int lock;
192
193 /* Self peer. */
194 struct peer *peer_self;
195
196 /* BGP peer. */
197 struct list *peer;
198 struct hash *peerhash;
199
200 /* BGP peer group. */
201 struct list *group;
202
203 /* The maximum number of BGP dynamic neighbors that can be created */
204 int dynamic_neighbors_limit;
205
206 /* The current number of BGP dynamic neighbors */
207 int dynamic_neighbors_count;
208
209 struct hash *update_groups[BGP_AF_MAX];
210
211 /*
212 * Global statistics for update groups.
213 */
214 struct {
215 u_int32_t join_events;
216 u_int32_t prune_events;
217 u_int32_t merge_events;
218 u_int32_t split_events;
219 u_int32_t updgrp_switch_events;
220 u_int32_t peer_refreshes_combined;
221 u_int32_t adj_count;
222 u_int32_t merge_checks_triggered;
223
224 u_int32_t updgrps_created;
225 u_int32_t updgrps_deleted;
226 u_int32_t subgrps_created;
227 u_int32_t subgrps_deleted;
228 } update_group_stats;
229
230 /* BGP configuration. */
231 u_int16_t config;
c2d58d6d 232#define BGP_CONFIG_CLUSTER_ID (1 << 0)
233#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 234
d62a17ae 235 /* BGP router identifier. */
236 struct in_addr router_id;
237 struct in_addr router_id_static;
238 struct in_addr router_id_zebra;
718e3744 239
d62a17ae 240 /* BGP route reflector cluster ID. */
241 struct in_addr cluster_id;
718e3744 242
d62a17ae 243 /* BGP confederation information. */
244 as_t confed_id;
245 as_t *confed_peers;
246 int confed_peers_cnt;
718e3744 247
d62a17ae 248 struct thread
249 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 250
d62a17ae 251 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
252 /* $FRR indent$ */
253 /* clang-format off */
abc920f8 254#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d62a17ae 255 u_int32_t maxmed_onstartup_value; /* Max-med value when active on
256 start-up */
257 struct thread
258 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
259 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
260
261 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
262 /* $FRR indent$ */
263 /* clang-format off */
abc920f8 264#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
a4d82a8a 265 u_int32_t maxmed_admin_value; /* Max-med value when administrative in on
d62a17ae 266 */
a4d82a8a
PZ		 267 /* $FRR indent$ */
268 /* clang-format off */
abc920f8
DS		 269#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
270
a4d82a8a
PZ		 271 u_char maxmed_active; /* 1/0 if max-med is active or not */
272 u_int32_t maxmed_value; /* Max-med value when its active */
d62a17ae 273
274 /* BGP update delay on startup */
275 struct thread *t_update_delay;
276 struct thread *t_establish_wait;
277 u_char update_delay_over;
278 u_char main_zebra_update_hold;
279 u_char main_peers_update_hold;
280 u_int16_t v_update_delay;
281 u_int16_t v_establish_wait;
282 char update_delay_begin_time[64];
283 char update_delay_end_time[64];
284 char update_delay_zebra_resume_time[64];
285 char update_delay_peers_resume_time[64];
286 u_int32_t established;
287 u_int32_t restarted_peers;
288 u_int32_t implicit_eors;
289 u_int32_t explicit_eors;
f188f2c4
DS		 290#define BGP_UPDATE_DELAY_DEF 0
291#define BGP_UPDATE_DELAY_MIN 0
292#define BGP_UPDATE_DELAY_MAX 3600
293
d62a17ae 294 /* BGP flags. */
295 u_int32_t flags;
718e3744 296#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
297#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
298#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
299#define BGP_FLAG_MED_CONFED (1 << 3)
300#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
301#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
302#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
303#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
304#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
305#define BGP_FLAG_IMPORT_CHECK (1 << 9)
306#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 307#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 308#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 309#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 310#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 311#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 312#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 313#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 314#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 315#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 316#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 317#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 318
d62a17ae 319 /* BGP Per AF flags */
320 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 321#define BGP_CONFIG_DAMPENING (1 << 0)
322
154faa50
MK		 323/* l2vpn evpn flags */
324#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 0)
325#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 1)
486456ca
MK		 326#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 2)
327#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 3)
154faa50
MK		 328
329
d62a17ae 330 /* Route table for next-hop lookup cache. */
331 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 332
d62a17ae 333 /* Route table for import-check */
334 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 335
d62a17ae 336 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 337
d62a17ae 338 struct hash *address_hash;
6aeb9e78 339
db0e1937
MK		 340 /* DB for all local tunnel-ips - used mainly for martian checks
341 Currently it only has all VxLan tunnel IPs*/
342 struct hash *tip_hash;
343
d62a17ae 344 /* Static route configuration. */
345 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 346
d62a17ae 347 /* Aggregate address configuration. */
348 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 349
d62a17ae 350 /* BGP routing information base. */
351 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 352
d62a17ae 353 /* BGP table route-map. */
354 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 355
d62a17ae 356 /* BGP redistribute configuration. */
357 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 358
318cac96
DW		 359 /* Allocate MPLS labels */
360 u_char allocate_mpls_labels[AFI_MAX][SAFI_MAX];
361
d62a17ae 362 /* timer to re-evaluate neighbor default-originate route-maps */
363 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 364#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
365
d62a17ae 366 /* BGP distance configuration. */
367 u_char distance_ebgp[AFI_MAX][SAFI_MAX];
368 u_char distance_ibgp[AFI_MAX][SAFI_MAX];
369 u_char distance_local[AFI_MAX][SAFI_MAX];
370
371 /* BGP default local-preference. */
372 u_int32_t default_local_pref;
373
374 /* BGP default subgroup pkt queue max */
375 u_int32_t default_subgroup_pkt_queue_max;
376
377 /* BGP default timer. */
378 u_int32_t default_holdtime;
379 u_int32_t default_keepalive;
380
381 /* BGP graceful restart */
382 u_int32_t restart_time;
383 u_int32_t stalepath_time;
384
385 /* Maximum-paths configuration */
386 struct bgp_maxpaths_cfg {
387 u_int16_t maxpaths_ebgp;
388 u_int16_t maxpaths_ibgp;
389 u_int16_t ibgp_flags;
5e242b0d 390#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 391 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 392
555e09d4
QY		 393 _Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
394 _Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
395
37a333fe
QY		 396 /* Automatic coalesce adjust on/off */
397 bool heuristic_coalesce;
14b8641a
QY		 398 /* Actual coalesce time */
399 uint32_t coalesce_time;
adbac85e 400
f26845f9
QY		 401 /* Auto-shutdown new peers */
402 bool autoshutdown;
403
d62a17ae 404 u_int32_t addpath_tx_id;
405 int addpath_tx_used[AFI_MAX][SAFI_MAX];
65efcfce
LB		 406
407#if ENABLE_BGP_VNC
d62a17ae 408 struct rfapi_cfg *rfapi_cfg;
409 struct rfapi *rfapi;
65efcfce 410#endif
19df7279 411
d62a17ae 412 /* EVPN related information */
14c1a7bf 413
d62a17ae 414 /* EVI hash table */
415 struct hash *vnihash;
14c1a7bf 416
1a98c087
MK		 417 /* EVPN enable - advertise gateway macip routes */
418 int advertise_gw_macip;
419
d62a17ae 420 /* EVPN enable - advertise local VNIs and their MACs etc. */
421 int advertise_all_vni;
14c1a7bf 422
d62a17ae 423 /* Hash table of Import RTs to EVIs */
424 struct hash *import_rt_hash;
14c1a7bf 425
10ebe1ab
MK		 426 /* Hash table of VRF import RTs to VRFs */
427 struct hash *vrf_import_rt_hash;
428
fe1dc5a3
MK		 429 /* L3-VNI corresponding to this vrf */
430 vni_t l3vni;
431
432 /* router-mac to be used in mac-ip routes for this vrf */
433 struct ethaddr rmac;
434
b67a60d2 435 /* originator ip - to be used as NH for type-5 routes */
436 struct in_addr originator_ip;
437
fe1dc5a3
MK		 438 /* vrf flags */
439 uint32_t vrf_flags;
676f83b9 440#define BGP_VRF_AUTO (1 << 0)
154faa50
MK		 441#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
442#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
443#define BGP_VRF_RD_CFGD (1 << 3)
676f83b9 444
445 /* unique ID for auto derivation of RD for this vrf */
446 uint16_t vrf_rd_id;
447
448 /* RD for this VRF */
449 struct prefix_rd vrf_prd;
c581d8b0
MK		 450
451 /* import rt list for the vrf instance */
452 struct list *vrf_import_rtl;
453
454 /* export rt list for the vrf instance */
455 struct list *vrf_export_rtl;
fe1dc5a3 456
6a8657d0
MK		 457 /* list of corresponding l2vnis (struct bgpevpn) */
458 struct list *l2vnis;
459
53c84f78
MK		 460 /* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
461 struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
462
d62a17ae 463 QOBJ_FIELDS
718e3744 464};
19df7279 465DECLARE_QOBJ_TYPE(bgp)
718e3744 466
2a3d5731 467#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 468
d62a17ae 469#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
470 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
471 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
472 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 473
718e3744 474/* BGP peer-group support. */
d62a17ae 475struct peer_group {
476 /* Name of the peer-group. */
477 char *name;
718e3744 478
d62a17ae 479 /* Pointer to BGP. */
480 struct bgp *bgp;
718e3744 481
d62a17ae 482 /* Peer-group client list. */
483 struct list *peer;
f14e6fdb 484
d62a17ae 485 /** Dynamic neighbor listening ranges */
486 struct list *listen_range[AFI_MAX];
487
488 /* Peer-group config */
489 struct peer *conf;
718e3744 490};
491
492/* BGP Notify message format. */
d62a17ae 493struct bgp_notify {
494 u_char code;
495 u_char subcode;
496 char *data;
497 bgp_size_t length;
498 u_char *raw_data;
718e3744 499};
500
501/* Next hop self address. */
d62a17ae 502struct bgp_nexthop {
503 struct interface *ifp;
504 struct in_addr v4;
505 struct in6_addr v6_global;
506 struct in6_addr v6_local;
718e3744 507};
508
a82478b9
DS		 509/* BGP addpath values */
510#define BGP_ADDPATH_RX 1
511#define BGP_ADDPATH_TX 2
512#define BGP_ADDPATH_ID_LEN 4
513
adbac85e
DW		 514#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
515
718e3744 516/* BGP router distinguisher value. */
517#define BGP_RD_SIZE 8
518
d62a17ae 519struct bgp_rd {
520 u_char val[BGP_RD_SIZE];
718e3744 521};
522
2a3d5731
DW		 523#define RMAP_IN 0
524#define RMAP_OUT 1
525#define RMAP_MAX 2
fee0f4c6 526
65efcfce
LB		 527#include "filter.h"
528
718e3744 529/* BGP filter structure. */
d62a17ae 530struct bgp_filter {
531 /* Distribute-list. */
532 struct {
533 char *name;
534 struct access_list *alist;
535 } dlist[FILTER_MAX];
536
537 /* Prefix-list. */
538 struct {
539 char *name;
540 struct prefix_list *plist;
541 } plist[FILTER_MAX];
542
543 /* Filter-list. */
544 struct {
545 char *name;
546 struct as_list *aslist;
547 } aslist[FILTER_MAX];
548
549 /* Route-map. */
550 struct {
551 char *name;
552 struct route_map *map;
553 } map[RMAP_MAX];
554
555 /* Unsuppress-map. */
556 struct {
557 char *name;
558 struct route_map *map;
559 } usmap;
718e3744 560};
561
6d85b15b
JBD		 562/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
563 a peer who's AS is part of our Confederation. */
d62a17ae 564typedef enum {
565 BGP_PEER_IBGP = 1,
566 BGP_PEER_EBGP,
567 BGP_PEER_INTERNAL,
568 BGP_PEER_CONFED,
6d85b15b
JBD		 569} bgp_peer_sort_t;
570
d6661008
DS		 571/* BGP message header and packet size. */
572#define BGP_MARKER_SIZE 16
573#define BGP_HEADER_SIZE 19
574#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 575#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 576
3f9c7369
DS		 577/*
578 * Trigger delay for bgp_announce_route().
579 */
580#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
581#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
582
d62a17ae 583struct peer_af {
584 /* back pointer to the peer */
585 struct peer *peer;
3f9c7369 586
d62a17ae 587 /* which subgroup the peer_af belongs to */
588 struct update_subgroup *subgroup;
3f9c7369 589
d62a17ae 590 /* for being part of an update subgroup's peer list */
591 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 592
d62a17ae 593 /* for being part of a packet's peer list */
594 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 595
d62a17ae 596 struct bpacket *next_pkt_to_send;
3f9c7369 597
d62a17ae 598 /*
599 * Trigger timer for bgp_announce_route().
600 */
601 struct thread *t_announce_route;
3f9c7369 602
d62a17ae 603 afi_t afi;
604 safi_t safi;
605 int afid;
3f9c7369
DS		 606};
607
718e3744 608/* BGP neighbor structure. */
d62a17ae 609struct peer {
610 /* BGP structure. */
611 struct bgp *bgp;
612
613 /* reference count, primarily to allow bgp_process'ing of route_node's
614 * to be done after a struct peer is deleted.
615 *
616 * named 'lock' for hysterical reasons within Quagga.
617 */
618 int lock;
619
620 /* BGP peer group. */
621 struct peer_group *group;
622 uint64_t version[AFI_MAX][SAFI_MAX];
623
624 /* BGP peer_af structures, per configured AF on this peer */
625 struct peer_af *peer_af_array[BGP_AF_MAX];
626
627 /* Peer's remote AS number. */
628 int as_type;
629 as_t as;
630
631 /* Peer's local AS number. */
632 as_t local_as;
633
634 bgp_peer_sort_t sort;
635
636 /* Peer's Change local AS number. */
637 as_t change_local_as;
638
639 /* Remote router ID. */
640 struct in_addr remote_id;
641
642 /* Local router ID. */
643 struct in_addr local_id;
644
645 /* Packet receive and send buffer. */
424ab01d
QY		 646 pthread_mutex_t io_mtx; // guards ibuf, obuf
647 struct stream_fifo *ibuf; // packets waiting to be processed
648 struct stream_fifo *obuf; // packets waiting to be written
649
74ffbfe6
QY		 650 struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
651 struct stream *obuf_work; // WiP buffer used to construct packets
424ab01d
QY		 652
653 struct stream *curr; // the current packet being parsed
d62a17ae 654
655 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 656 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 657 * actual packet is then constructed by concatenating the two.
658 */
659 struct stream *scratch;
660
661 /* the doppelganger peer structure, due to dual TCP conn setup */
662 struct peer *doppelganger;
663
664 /* Status of the peer. */
665 int status;
666 int ostatus;
667
668 /* FSM events, stored for debug purposes.
669 * Note: uchar used for reduced memory usage.
670 */
671 unsigned char cur_event;
672 unsigned char last_event;
673 unsigned char last_major_event;
674
675 /* Peer index, used for dumping TABLE_DUMP_V2 format */
676 uint16_t table_dump_index;
677
678 /* Peer information */
679 int fd; /* File descriptor */
680 int ttl; /* TTL of TCP connection to the peer. */
681 int rtt; /* Estimated round-trip-time from TCP_INFO */
682 int gtsm_hops; /* minimum hopcount to peer */
683 char *desc; /* Description of the peer. */
684 unsigned short port; /* Destination port for peer */
685 char *host; /* Printable address of the peer. */
686 union sockunion su; /* Sockunion address of the peer. */
687 /* $FRR indent$ */
688 /* clang-format off */
a80beece 689#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 690 time_t uptime; /* Last Up/Down time */
691 time_t readtime; /* Last read time */
692 time_t resettime; /* Last reset time */
693
694 ifindex_t ifindex; /* ifindex of the BGP connection. */
695 char *conf_if; /* neighbor interface config name. */
696 struct interface *ifp; /* corresponding interface */
697 char *ifname; /* bind interface name. */
698 char *update_if;
699 union sockunion *update_source;
700
701 union sockunion *su_local; /* Sockunion of local address. */
702 union sockunion *su_remote; /* Sockunion of remote address. */
703 int shared_network; /* Is this peer shared same network. */
704 struct bgp_nexthop nexthop; /* Nexthop */
705
706 /* Peer address family configuration. */
707 u_char afc[AFI_MAX][SAFI_MAX];
708 u_char afc_nego[AFI_MAX][SAFI_MAX];
709 u_char afc_adv[AFI_MAX][SAFI_MAX];
710 u_char afc_recv[AFI_MAX][SAFI_MAX];
711
712 /* Capability flags (reset in bgp_stop) */
713 u_int32_t cap;
718e3744 714#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
715#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
716#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
717#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
718#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 719#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
720#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 721#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
722#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 723#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
724#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 725#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
726#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 727#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
728#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 729#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
730#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 731
d62a17ae 732 /* Capability flags (reset in bgp_stop) */
733 u_int32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 734#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
735#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
736#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
737#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
738#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
739#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 740#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
741#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 742#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
743#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
744#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
745#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 746#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
747#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
748#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 749
d62a17ae 750 /* Global configuration flags. */
751 u_int32_t flags;
718e3744 752#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
753#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
754#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
755#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
756#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 757#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 758#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 759#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 760#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 761#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
762#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 763#define PEER_FLAG_LONESOUL (1 << 11)
764#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
765#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 766#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
65efcfce 767#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
02a82b47 768
d62a17ae 769 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
770 char *tx_shutdown_message;
718e3744 771
d62a17ae 772 /* NSF mode (graceful restart) */
773 u_char nsf[AFI_MAX][SAFI_MAX];
93406d87 774
d62a17ae 775 /* Per AF configuration flags. */
776 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 777#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
778#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
779#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
780#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
781#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
782#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
783#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
784#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
785#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
786#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
787#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
788#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
789#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
790#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
791#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
792#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 793#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 794#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 795#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
796#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 797#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 798#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 799#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 800#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
d93f7ffc 801#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 802#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 803#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 804
d62a17ae 805 /* MD5 password */
806 char *password;
718e3744 807
d62a17ae 808 /* default-originate route-map. */
809 struct {
810 char *name;
811 struct route_map *map;
812 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 813
d62a17ae 814 /* Peer status flags. */
815 u_int16_t sflags;
718e3744 816#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
817#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
818#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
819#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
820#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 821#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
822#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 823
d62a17ae 824 /* Peer status af flags (reset in bgp_stop) */
825 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 826#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
827#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 828#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
829#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
830#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
831#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 832
d62a17ae 833 /* Default attribute value for the peer. */
834 u_int32_t config;
d93f7ffc
DW		 835#define PEER_CONFIG_TIMER (1 << 0) /* keepalive & holdtime */
836#define PEER_CONFIG_CONNECT (1 << 1) /* connect */
837#define PEER_CONFIG_ROUTEADV (1 << 2) /* route advertise */
d25e4efc
DS		 838#define PEER_GROUP_CONFIG_TIMER (1 << 3) /* timers from peer-group */
839
a4d82a8a
PZ		 840#define PEER_OR_GROUP_TIMER_SET(peer) \
841 (CHECK_FLAG(peer->config, PEER_CONFIG_TIMER) \
d25e4efc 842 || CHECK_FLAG(peer->config, PEER_GROUP_CONFIG_TIMER))
8ffedcea 843
1588f6f4
QY		 844 _Atomic uint32_t holdtime;
845 _Atomic uint32_t keepalive;
846 _Atomic uint32_t connect;
847 _Atomic uint32_t routeadv;
d62a17ae 848
849 /* Timer values. */
1588f6f4
QY		 850 _Atomic uint32_t v_start;
851 _Atomic uint32_t v_connect;
852 _Atomic uint32_t v_holdtime;
853 _Atomic uint32_t v_keepalive;
854 _Atomic uint32_t v_routeadv;
855 _Atomic uint32_t v_pmax_restart;
856 _Atomic uint32_t v_gr_restart;
d62a17ae 857
858 /* Threads. */
859 struct thread *t_read;
424ab01d 860 struct thread *t_write;
d62a17ae 861 struct thread *t_start;
387f984e
QY		 862 struct thread *t_connect_check_r;
863 struct thread *t_connect_check_w;
d62a17ae 864 struct thread *t_connect;
865 struct thread *t_holdtime;
d62a17ae 866 struct thread *t_routeadv;
867 struct thread *t_pmax_restart;
868 struct thread *t_gr_restart;
869 struct thread *t_gr_stale;
56257a44 870 struct thread *t_generate_updgrp_packets;
424ab01d 871 struct thread *t_process_packet;
d62a17ae 872
49507a6f 873 /* Thread flags. */
1588f6f4 874 _Atomic uint16_t thread_flags;
b750b0ba
QY		 875#define PEER_THREAD_WRITES_ON (1 << 0)
876#define PEER_THREAD_READS_ON (1 << 1)
877#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
d62a17ae 878 /* workqueues */
879 struct work_queue *clear_node_queue;
880
a4d82a8a
PZ		 881#define PEER_TOTAL_RX(peer) \
882 atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
883 + atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
884 + atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
885 + atomic_load_explicit(&peer->refresh_in, \
886 memory_order_relaxed) \
887 + atomic_load_explicit(&peer->keepalive_in, \
888 memory_order_relaxed) \
889 + atomic_load_explicit(&peer->dynamic_cap_in, \
890 memory_order_relaxed)
891
892#define PEER_TOTAL_TX(peer) \
893 atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
894 + atomic_load_explicit(&peer->update_out, \
895 memory_order_relaxed) \
896 + atomic_load_explicit(&peer->notify_out, \
897 memory_order_relaxed) \
898 + atomic_load_explicit(&peer->refresh_out, \
899 memory_order_relaxed) \
900 + atomic_load_explicit(&peer->keepalive_out, \
901 memory_order_relaxed) \
902 + atomic_load_explicit(&peer->dynamic_cap_out, \
903 memory_order_relaxed)
0112e9e0 904
d62a17ae 905 /* Statistics field */
d316210b
PZ		 906 _Atomic uint32_t open_in; /* Open message input count */
907 _Atomic uint32_t open_out; /* Open message output count */
1588f6f4
QY		 908 _Atomic uint32_t update_in; /* Update message input count */
909 _Atomic uint32_t update_out; /* Update message ouput count */
910 _Atomic time_t update_time; /* Update message received time. */
911 _Atomic uint32_t keepalive_in; /* Keepalive input count */
912 _Atomic uint32_t keepalive_out; /* Keepalive output count */
913 _Atomic uint32_t notify_in; /* Notify input count */
914 _Atomic uint32_t notify_out; /* Notify output count */
915 _Atomic uint32_t refresh_in; /* Route Refresh input count */
916 _Atomic uint32_t refresh_out; /* Route Refresh output count */
917 _Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
a4d82a8a 918 _Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
d62a17ae 919
920 /* BGP state count */
921 u_int32_t established; /* Established */
922 u_int32_t dropped; /* Dropped */
923
924 /* Update delay related fields */
925 u_char update_delay_over; /* When this is set, BGP is no more waiting
926 for EOR */
927
928 /* Syncronization list and time. */
929 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
930 time_t synctime;
1588f6f4
QY		 931 /* timestamp when the last UPDATE msg was written */
932 _Atomic time_t last_write;
933 /* timestamp when the last msg was written */
934 _Atomic time_t last_update;
d62a17ae 935
936 /* Send prefix count. */
937 unsigned long scount[AFI_MAX][SAFI_MAX];
938
d62a17ae 939 /* Notify data. */
940 struct bgp_notify notify;
941
d62a17ae 942 /* Filter structure. */
943 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
944
945 /* ORF Prefix-list */
946 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
947
948 /* Text description of last attribute rcvd */
949 char rcvd_attr_str[BUFSIZ];
950
951 /* Track if we printed the attribute in debugs */
952 int rcvd_attr_printed;
953
954 /* Prefix count. */
955 unsigned long pcount[AFI_MAX][SAFI_MAX];
956
957 /* Max prefix count. */
958 unsigned long pmax[AFI_MAX][SAFI_MAX];
959 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
960 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 961#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 962
d62a17ae 963 /* allowas-in. */
964 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 965
d62a17ae 966 /* weight */
967 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 968
d62a17ae 969 /* peer reset cause */
970 char last_reset;
e0701b79 971#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
972#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
973#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
974#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
975#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
976#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
977#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
978#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
979#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
980#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
981#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
982#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
983#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
984#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
985#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
986#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
987#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
988#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
989#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
990#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
991#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 992#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 993#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 994#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 995#define PEER_DOWN_IF_DOWN 25 /* Interface down */
996#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 997 unsigned long last_reset_cause_size;
998 u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 999
d62a17ae 1000 /* The kind of route-map Flags.*/
1001 u_char rmap_type;
ac41b2a2 1002#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
1003#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
1004#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
1005#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
1006#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
1007#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 1008#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
1009#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 1010
d62a17ae 1011 /* peer specific BFD information */
1012 struct bfd_info *bfd_info;
04b6bdc0 1013
d62a17ae 1014 /* hostname and domainname advertised by host */
1015 char *hostname;
1016 char *domainname;
19df7279 1017
d62a17ae 1018 QOBJ_FIELDS
718e3744 1019};
19df7279 1020DECLARE_QOBJ_TYPE(peer)
718e3744 1021
ad4cbda1 1022/* Check if suppress start/restart of sessions to peer. */
d62a17ae 1023#define BGP_PEER_START_SUPPRESSED(P) \
1024 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
1025 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 1026
0df7c91f
PJ		 1027#define PEER_PASSWORD_MINLEN (1)
1028#define PEER_PASSWORD_MAXLEN (80)
1029
718e3744 1030/* This structure's member directly points incoming packet data
1031 stream. */
d62a17ae 1032struct bgp_nlri {
1033 /* AFI. */
a46a2e9b 1034 uint16_t afi; /* iana_afi_t */
718e3744 1035
d62a17ae 1036 /* SAFI. */
a46a2e9b 1037 uint8_t safi; /* iana_safi_t */
718e3744 1038
d62a17ae 1039 /* Pointer to NLRI byte stream. */
1040 u_char *nlri;
718e3744 1041
d62a17ae 1042 /* Length of whole NLRI. */
1043 bgp_size_t length;
718e3744 1044};
1045
1046/* BGP versions. */
1047#define BGP_VERSION_4 4
718e3744 1048
1049/* Default BGP port number. */
1050#define BGP_PORT_DEFAULT 179
1051
718e3744 1052/* BGP minimum message size. */
1053#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
1054#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
1055#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
1056#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
1057#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
1058#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
1059
1060/* BGP message types. */
1061#define BGP_MSG_OPEN 1
1062#define BGP_MSG_UPDATE 2
1063#define BGP_MSG_NOTIFY 3
1064#define BGP_MSG_KEEPALIVE 4
1065#define BGP_MSG_ROUTE_REFRESH_NEW 5
1066#define BGP_MSG_CAPABILITY 6
1067#define BGP_MSG_ROUTE_REFRESH_OLD 128
1068
1069/* BGP open optional parameter. */
1070#define BGP_OPEN_OPT_AUTH 1
1071#define BGP_OPEN_OPT_CAP 2
1072
1073/* BGP4 attribute type codes. */
1074#define BGP_ATTR_ORIGIN 1
1075#define BGP_ATTR_AS_PATH 2
1076#define BGP_ATTR_NEXT_HOP 3
1077#define BGP_ATTR_MULTI_EXIT_DISC 4
1078#define BGP_ATTR_LOCAL_PREF 5
1079#define BGP_ATTR_ATOMIC_AGGREGATE 6
1080#define BGP_ATTR_AGGREGATOR 7
1081#define BGP_ATTR_COMMUNITIES 8
1082#define BGP_ATTR_ORIGINATOR_ID 9
1083#define BGP_ATTR_CLUSTER_LIST 10
1084#define BGP_ATTR_DPA 11
1085#define BGP_ATTR_ADVERTISER 12
1086#define BGP_ATTR_RCID_PATH 13
1087#define BGP_ATTR_MP_REACH_NLRI 14
1088#define BGP_ATTR_MP_UNREACH_NLRI 15
1089#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1090#define BGP_ATTR_AS4_PATH 17
1091#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1092#define BGP_ATTR_AS_PATHLIMIT 21
a21bd7a3 1093#define BGP_ATTR_PMSI_TUNNEL 22
f4c89855 1094#define BGP_ATTR_ENCAP 23
57d187bc 1095#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1096#define BGP_ATTR_PREFIX_SID 40
65efcfce
LB		 1097#if ENABLE_BGP_VNC
1098#define BGP_ATTR_VNC 255
1099#endif
718e3744 1100
1101/* BGP update origin. */
1102#define BGP_ORIGIN_IGP 0
1103#define BGP_ORIGIN_EGP 1
1104#define BGP_ORIGIN_INCOMPLETE 2
1105
1106/* BGP notify message codes. */
1107#define BGP_NOTIFY_HEADER_ERR 1
1108#define BGP_NOTIFY_OPEN_ERR 2
1109#define BGP_NOTIFY_UPDATE_ERR 3
1110#define BGP_NOTIFY_HOLD_ERR 4
1111#define BGP_NOTIFY_FSM_ERR 5
1112#define BGP_NOTIFY_CEASE 6
1113#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1114
4b4e07d2
DT		 1115#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1116
718e3744 1117/* BGP_NOTIFY_HEADER_ERR sub codes. */
1118#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1119#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1120#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1121
1122/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1123#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1124#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1125#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1126#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1127#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1128#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1129#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1130#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1131
1132/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1133#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1134#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1135#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1136#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1137#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1138#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1139#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1140#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1141#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1142#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1143#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1144
4b4e07d2 1145/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1146#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1147#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1148#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1149#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1150#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1151#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1152#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1153#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1154
1155/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1156#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1157#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1158#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1159
1160/* BGP finite state machine status. */
1161#define Idle 1
1162#define Connect 2
1163#define Active 3
1164#define OpenSent 4
1165#define OpenConfirm 5
1166#define Established 6
ca058a30
PJ		 1167#define Clearing 7
1168#define Deleted 8
1169#define BGP_STATUS_MAX 9
718e3744 1170
1171/* BGP finite state machine events. */
1172#define BGP_Start 1
1173#define BGP_Stop 2
1174#define TCP_connection_open 3
1175#define TCP_connection_closed 4
1176#define TCP_connection_open_failed 5
1177#define TCP_fatal_error 6
1178#define ConnectRetry_timer_expired 7
1179#define Hold_Timer_expired 8
1180#define KeepAlive_timer_expired 9
1181#define Receive_OPEN_message 10
1182#define Receive_KEEPALIVE_message 11
1183#define Receive_UPDATE_message 12
1184#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1185#define Clearing_Completed 14
1186#define BGP_EVENTS_MAX 15
718e3744 1187
1188/* BGP timers default value. */
8efe88ea 1189/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1190#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1191#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1192#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1193#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1194#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1195#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1196
1197/* BGP default local preference. */
1198#define BGP_DEFAULT_LOCAL_PREF 100
1199
7f323236
DW		 1200/* BGP local-preference to send when 'bgp graceful-shutdown'
1201 * is configured */
1202#define BGP_GSHUT_LOCAL_PREF 0
1203
3f9c7369
DS		 1204/* BGP default subgroup packet queue max . */
1205#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1206
538621f2 1207/* BGP graceful restart */
1208#define BGP_DEFAULT_RESTART_TIME 120
1209#define BGP_DEFAULT_STALEPATH_TIME 360
1210
718e3744 1211/* BGP uptime string length. */
1212#define BGP_UPTIME_LEN 25
1213
1214/* Default configuration settings for bgpd. */
1215#define BGP_VTY_PORT 2605
718e3744 1216#define BGP_DEFAULT_CONFIG "bgpd.conf"
1217
1218/* Check AS path loop when we send NLRI. */
1219/* #define BGP_SEND_ASPATH_CHECK */
1220
f14e6fdb
DS		 1221/* BGP Dynamic Neighbors feature */
1222#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1223#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1224#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1225
718e3744 1226/* Flag for peer_clear_soft(). */
d62a17ae 1227enum bgp_clear_type {
1228 BGP_CLEAR_SOFT_NONE,
1229 BGP_CLEAR_SOFT_OUT,
1230 BGP_CLEAR_SOFT_IN,
1231 BGP_CLEAR_SOFT_BOTH,
1232 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1233};
1234
1235/* Macros. */
424ab01d 1236#define BGP_INPUT(P) ((P)->curr)
2d34fb80 1237#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
d62a17ae 1238#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1239 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1240
718e3744 1241/* BGP error codes. */
1242#define BGP_SUCCESS 0
1243#define BGP_ERR_INVALID_VALUE -1
1244#define BGP_ERR_INVALID_FLAG -2
1245#define BGP_ERR_INVALID_AS -3
1246#define BGP_ERR_INVALID_BGP -4
1247#define BGP_ERR_PEER_GROUP_MEMBER -5
1248#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1249#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1250#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1251#define BGP_ERR_PEER_GROUP_MISMATCH -9
1252#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1253#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1254#define BGP_ERR_AS_MISMATCH -12
1255#define BGP_ERR_PEER_FLAG_CONFLICT -13
1256#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1257#define BGP_ERR_PEER_FILTER_CONFLICT -15
1258#define BGP_ERR_NOT_INTERNAL_PEER -16
1259#define BGP_ERR_REMOVE_PRIVATE_AS -17
1260#define BGP_ERR_AF_UNCONFIGURED -18
1261#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1262#define BGP_ERR_INSTANCE_MISMATCH -20
1263#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1264#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1265#define BGP_ERR_TCPSIG_FAILED -23
1266#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1267#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1268#define BGP_ERR_NO_INTERFACE_CONFIG -26
1269#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1270#define BGP_ERR_AS_OVERRIDE -28
1271#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1272#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1273#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1274#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1275#define BGP_ERR_MAX -33
63fa10b5 1276#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1277#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1278
3f9c7369
DS		 1279/*
1280 * Enumeration of different policy kinds a peer can be configured with.
1281 */
d62a17ae 1282typedef enum {
1283 BGP_POLICY_ROUTE_MAP,
1284 BGP_POLICY_FILTER_LIST,
1285 BGP_POLICY_PREFIX_LIST,
1286 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1287} bgp_policy_type_e;
1288
718e3744 1289extern struct bgp_master *bm;
37fe7731 1290extern unsigned int multipath_num;
718e3744 1291
718e3744 1292/* Prototypes. */
d62a17ae 1293extern void bgp_terminate(void);
1294extern void bgp_reset(void);
1295extern time_t bgp_clock(void);
1296extern void bgp_zclient_reset(void);
1297extern int bgp_nexthop_set(union sockunion *, union sockunion *,
1298 struct bgp_nexthop *, struct peer *);
1299extern struct bgp *bgp_get_default(void);
1300extern struct bgp *bgp_lookup(as_t, const char *);
1301extern struct bgp *bgp_lookup_by_name(const char *);
1302extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1303extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1304extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1305extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1306extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1307extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1308extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1309extern struct peer_group *peer_group_get(struct bgp *, const char *);
1310extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1311 union sockunion *,
1312 struct peer_group *);
1313extern struct prefix *
1314peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1315extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1316 struct prefix *,
1317 struct prefix **);
1318extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1319 union sockunion *);
1320extern void peer_drop_dynamic_neighbor(struct peer *);
28066f4b
DS		 1321
1322/*
1323 * Peers are incredibly easy to memory leak
1324 * due to the various ways that they are actually used
1325 * Provide some functionality to debug locks and unlocks
1326 */
1327extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1328extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1329#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1330#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1331
d62a17ae 1332extern bgp_peer_sort_t peer_sort(struct peer *peer);
1333extern int peer_active(struct peer *);
1334extern int peer_active_nego(struct peer *);
1335extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1336extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1337 as_t, as_t, int, afi_t, safi_t,
1338 struct peer_group *);
1339extern struct peer *peer_create_accept(struct bgp *);
1340extern void peer_xfer_config(struct peer *dst, struct peer *src);
1341extern char *peer_uptime(time_t, char *, size_t, u_char, json_object *);
856ca177 1342
d62a17ae 1343extern int bgp_config_write(struct vty *);
6b0655a2 1344
d62a17ae 1345extern void bgp_master_init(struct thread_master *master);
718e3744 1346
d62a17ae 1347extern void bgp_init(void);
419dfe6a 1348extern void bgp_pthreads_run(void);
2d4ee774 1349extern void bgp_pthreads_finish(void);
d62a17ae 1350extern void bgp_route_map_init(void);
1351extern void bgp_session_reset(struct peer *);
718e3744 1352
d62a17ae 1353extern int bgp_option_set(int);
1354extern int bgp_option_unset(int);
1355extern int bgp_option_check(int);
718e3744 1356
d62a17ae 1357extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1358extern void bgp_instance_up(struct bgp *);
1359extern void bgp_instance_down(struct bgp *);
1360extern int bgp_delete(struct bgp *);
718e3744 1361
d62a17ae 1362extern int bgp_flag_set(struct bgp *, int);
1363extern int bgp_flag_unset(struct bgp *, int);
1364extern int bgp_flag_check(struct bgp *, int);
718e3744 1365
d62a17ae 1366extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1367extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1368
d62a17ae 1369extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1370extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1371
d62a17ae 1372extern int bgp_confederation_id_set(struct bgp *, as_t);
1373extern int bgp_confederation_id_unset(struct bgp *);
1374extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1375
d62a17ae 1376extern int bgp_confederation_peers_add(struct bgp *, as_t);
1377extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1378
d62a17ae 1379extern int bgp_timers_set(struct bgp *, u_int32_t keepalive,
1380 u_int32_t holdtime);
1381extern int bgp_timers_unset(struct bgp *);
718e3744 1382
d62a17ae 1383extern int bgp_default_local_preference_set(struct bgp *, u_int32_t);
1384extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1385
d62a17ae 1386extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, u_int32_t);
1387extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1388
d62a17ae 1389extern int bgp_listen_limit_set(struct bgp *, int);
1390extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1391
d62a17ae 1392extern int bgp_update_delay_active(struct bgp *);
1393extern int bgp_update_delay_configured(struct bgp *);
318cac96 1394extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1395extern void peer_as_change(struct peer *, as_t, int);
1396extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1397 int, afi_t, safi_t);
1398extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1399extern int peer_delete(struct peer *peer);
1400extern int peer_group_delete(struct peer_group *);
1401extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1402extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1403
d62a17ae 1404extern int peer_activate(struct peer *, afi_t, safi_t);
1405extern int peer_deactivate(struct peer *, afi_t, safi_t);
1406extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1407
d62a17ae 1408extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1409 struct peer_group *, as_t *);
1410extern int peer_group_unbind(struct bgp *, struct peer *, struct peer_group *);
718e3744 1411
d62a17ae 1412extern int peer_flag_set(struct peer *, u_int32_t);
1413extern int peer_flag_unset(struct peer *, u_int32_t);
718e3744 1414
d62a17ae 1415extern int peer_af_flag_set(struct peer *, afi_t, safi_t, u_int32_t);
1416extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, u_int32_t);
1417extern int peer_af_flag_check(struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1418
d62a17ae 1419extern int peer_ebgp_multihop_set(struct peer *, int);
1420extern int peer_ebgp_multihop_unset(struct peer *);
1421extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1422
d62a17ae 1423extern int peer_description_set(struct peer *, const char *);
1424extern int peer_description_unset(struct peer *);
718e3744 1425
d62a17ae 1426extern int peer_update_source_if_set(struct peer *, const char *);
1427extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1428extern int peer_update_source_unset(struct peer *);
718e3744 1429
d62a17ae 1430extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1431 const char *);
1432extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1433
d62a17ae 1434extern int peer_port_set(struct peer *, u_int16_t);
1435extern int peer_port_unset(struct peer *);
718e3744 1436
d62a17ae 1437extern int peer_weight_set(struct peer *, afi_t, safi_t, u_int16_t);
1438extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1439
d62a17ae 1440extern int peer_timers_set(struct peer *, u_int32_t keepalive,
1441 u_int32_t holdtime);
1442extern int peer_timers_unset(struct peer *);
718e3744 1443
d62a17ae 1444extern int peer_timers_connect_set(struct peer *, u_int32_t);
1445extern int peer_timers_connect_unset(struct peer *);
718e3744 1446
d62a17ae 1447extern int peer_advertise_interval_set(struct peer *, u_int32_t);
1448extern int peer_advertise_interval_unset(struct peer *);
718e3744 1449
d62a17ae 1450extern void peer_interface_set(struct peer *, const char *);
1451extern void peer_interface_unset(struct peer *);
718e3744 1452
d62a17ae 1453extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1454extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1455
d62a17ae 1456extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1457extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1458
d62a17ae 1459extern int peer_local_as_set(struct peer *, as_t, int, int);
1460extern int peer_local_as_unset(struct peer *);
718e3744 1461
d62a17ae 1462extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1463 const char *);
1464extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1465
d62a17ae 1466extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1467extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1468
d62a17ae 1469extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1470extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1471
d62a17ae 1472extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
0df7c91f 1473
d62a17ae 1474extern int peer_password_set(struct peer *, const char *);
1475extern int peer_password_unset(struct peer *);
0df7c91f 1476
d62a17ae 1477extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1478
d62a17ae 1479extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, u_int32_t,
1480 u_char, int, u_int16_t);
1481extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1482
d62a17ae 1483extern int peer_clear(struct peer *, struct listnode **);
1484extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1485
d62a17ae 1486extern int peer_ttl_security_hops_set(struct peer *, int);
1487extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1488
d62a17ae 1489extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1490extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1491
d62a17ae 1492extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1493extern void bgp_route_map_terminate(void);
16286195 1494
d62a17ae 1495extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1496
5c525538 1497extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1498 afi_t *afi, safi_t *safi);
1499extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
a4d82a8a
PZ		 1500 iana_afi_t *pkt_afi,
1501 iana_safi_t *pkt_safi);
9cabb64b 1502
d62a17ae 1503extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1504extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1505extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1506
ffd0c037 1507extern void bgp_close(void);
92375c91
JB		 1508extern void bgp_free(struct bgp *);
1509
1510static inline struct bgp *bgp_lock(struct bgp *bgp)
1511{
1512 bgp->lock++;
1513 return bgp;
1514}
1515
1516static inline void bgp_unlock(struct bgp *bgp)
1517{
1518 assert(bgp->lock > 0);
1519 if (--bgp->lock == 0)
1520 bgp_free(bgp);
1521}
ffd0c037 1522
d62a17ae 1523static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1524{
d62a17ae 1525 switch (afi) {
1526 case AFI_IP:
1527 switch (safi) {
1528 case SAFI_UNICAST:
1529 return BGP_AF_IPV4_UNICAST;
1530 break;
1531 case SAFI_MULTICAST:
1532 return BGP_AF_IPV4_MULTICAST;
1533 break;
1534 case SAFI_LABELED_UNICAST:
1535 return BGP_AF_IPV4_LBL_UNICAST;
1536 break;
1537 case SAFI_MPLS_VPN:
1538 return BGP_AF_IPV4_VPN;
1539 break;
1540 case SAFI_ENCAP:
1541 return BGP_AF_IPV4_ENCAP;
1542 break;
1543 default:
1544 return BGP_AF_MAX;
1545 break;
1546 }
1547 break;
1548 case AFI_IP6:
1549 switch (safi) {
1550 case SAFI_UNICAST:
1551 return BGP_AF_IPV6_UNICAST;
1552 break;
1553 case SAFI_MULTICAST:
1554 return BGP_AF_IPV6_MULTICAST;
1555 break;
1556 case SAFI_LABELED_UNICAST:
1557 return BGP_AF_IPV6_LBL_UNICAST;
1558 break;
1559 case SAFI_MPLS_VPN:
1560 return BGP_AF_IPV6_VPN;
1561 break;
1562 case SAFI_ENCAP:
1563 return BGP_AF_IPV6_ENCAP;
1564 break;
1565 default:
1566 return BGP_AF_MAX;
1567 break;
1568 }
1569 break;
1570 case AFI_L2VPN:
1571 switch (safi) {
1572 case SAFI_EVPN:
1573 return BGP_AF_L2VPN_EVPN;
1574 break;
1575 default:
1576 return BGP_AF_MAX;
1577 break;
1578 }
3f9c7369 1579 default:
d62a17ae 1580 return BGP_AF_MAX;
1581 break;
3f9c7369 1582 }
3f9c7369
DS		 1583}
1584
c8560b44 1585/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1586static inline int peer_group_active(struct peer *peer)
3f9c7369 1587{
d62a17ae 1588 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1589 return 1;
1590 return 0;
3f9c7369
DS		 1591}
1592
1593/* If peer is negotiated at least one address family return 1. */
d62a17ae 1594static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1595{
d62a17ae 1596 if (peer->afc_nego[afi][SAFI_UNICAST]
1597 || peer->afc_nego[afi][SAFI_MULTICAST]
1598 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1599 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1600 || peer->afc_nego[afi][SAFI_ENCAP]
1601 || peer->afc_nego[afi][SAFI_EVPN])
1602 return 1;
1603 return 0;
3f9c7369
DS		 1604}
1605
f14e6fdb 1606/* If at least one address family activated for group, return 1. */
d62a17ae 1607static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1608{
d62a17ae 1609 struct peer *peer = group->conf;
1610
1611 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1612 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
1613 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1614 || peer->afc[AFI_IP6][SAFI_UNICAST]
1615 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1616 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1617 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1618 || peer->afc[AFI_IP6][SAFI_ENCAP]
1619 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1620 return 1;
1621 return 0;
f14e6fdb
DS		 1622}
1623
d62a17ae 1624static inline char *timestamp_string(time_t ts)
3f9c7369 1625{
d62a17ae 1626 time_t tbuf;
1627 tbuf = time(NULL) - (bgp_clock() - ts);
1628 return ctime(&tbuf);
3f9c7369
DS		 1629}
1630
d62a17ae 1631static inline int peer_established(struct peer *peer)
3f9c7369 1632{
d62a17ae 1633 if (peer->status == Established)
1634 return 1;
1635 return 0;
3f9c7369
DS		 1636}
1637
d62a17ae 1638static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1639{
d62a17ae 1640 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1641}
1642
d62a17ae 1643static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1644{
d62a17ae 1645 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1646}
1647
d1be1f08 1648/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1649static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1650{
d62a17ae 1651 struct vrf *vrf;
d1be1f08 1652
d62a17ae 1653 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1654 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1655 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1656 vrf = vrf_lookup_by_name(bgp->name);
1657 else
1658 vrf = NULL;
d1be1f08 1659
d62a17ae 1660 return vrf;
d1be1f08 1661}
1662
1663/* Link BGP instance to VRF. */
d62a17ae 1664static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1665{
d62a17ae 1666 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1667 if (vrf->info != (void *)bgp)
1668 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1669}
1670
1671/* Unlink BGP instance from VRF. */
d62a17ae 1672static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1673{
d62a17ae 1674 if (vrf->info == (void *)bgp) {
1675 vrf->info = NULL;
1676 bgp_unlock(bgp);
1677 }
1678 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1679}
1680
d62a17ae 1681extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1682
1683/* For benefit of rfapi */
d62a17ae 1684extern struct peer *peer_new(struct bgp *bgp);
65efcfce 1685
00d252cb 1686#endif /* _QUAGGA_BGPD_H */
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