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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"
718e3744 39
04b6bdc0 40#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
40520c36 41#define BGP_PEER_MAX_HASH_SIZE 16384
04b6bdc0 42
5c81b96a 43/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
44#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
45
3f9c7369
DS		 46struct update_subgroup;
47struct bpacket;
48
0299c004
DS		 49/*
50 * Allow the neighbor XXXX remote-as to take internal or external
d62a17ae 51 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
52 * behavior
0299c004
DS		 53 * in the system.
54 */
d62a17ae 55enum { AS_UNSPECIFIED = 0,
56 AS_SPECIFIED,
57 AS_INTERNAL,
58 AS_EXTERNAL,
0299c004
DS		 59};
60
718e3744 61/* Typedef BGP specific types. */
0b2aa3a0
PJ		 62typedef u_int32_t as_t;
63typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
718e3744 64typedef u_int16_t bgp_size_t;
65
d62a17ae 66#define max(a, b) \
67 ({ \
68 __typeof__(a) _a = (a); \
69 __typeof__(b) _b = (b); \
70 _a > _b ? _a : _b; \
71 })
72
73enum bgp_af_index {
74 BGP_AF_START,
75 BGP_AF_IPV4_UNICAST = BGP_AF_START,
76 BGP_AF_IPV4_MULTICAST,
77 BGP_AF_IPV4_VPN,
78 BGP_AF_IPV6_UNICAST,
79 BGP_AF_IPV6_MULTICAST,
80 BGP_AF_IPV6_VPN,
81 BGP_AF_IPV4_ENCAP,
82 BGP_AF_IPV6_ENCAP,
83 BGP_AF_L2VPN_EVPN,
84 BGP_AF_IPV4_LBL_UNICAST,
85 BGP_AF_IPV6_LBL_UNICAST,
86 BGP_AF_MAX
3f9c7369
DS		 87};
88
d62a17ae 89#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
3f9c7369 90
d62a17ae 91#define FOREACH_AFI_SAFI(afi, safi) \
92 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
93 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
3f9c7369 94
718e3744 95/* BGP master for system wide configurations and variables. */
d62a17ae 96struct bgp_master {
97 /* BGP instance list. */
98 struct list *bgp;
99
100 /* BGP thread master. */
101 struct thread_master *master;
718e3744 102
0ca8b79f 103/* BGP pthreads. */
424ab01d 104#define PTHREAD_IO (1 << 1)
0ca8b79f 105#define PTHREAD_KEEPALIVES (1 << 2)
2d4ee774 106
d62a17ae 107 /* work queues */
108 struct work_queue *process_main_queue;
87d4a781 109
d62a17ae 110 /* Listening sockets */
111 struct list *listen_sockets;
718e3744 112
d62a17ae 113 /* BGP port number. */
114 u_int16_t port;
3a02d1f7 115
d62a17ae 116 /* Listener address */
117 char *address;
718e3744 118
d62a17ae 119 /* BGP start time. */
120 time_t start_time;
121
122 /* Various BGP global configuration. */
123 u_char options;
718e3744 124#define BGP_OPT_NO_FIB (1 << 0)
125#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
126#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 127#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369 128
d62a17ae 129 uint64_t updgrp_idspace;
130 uint64_t subgrp_idspace;
5fe9f963 131
d62a17ae 132 /* timer to dampen route map changes */
133 struct thread *t_rmap_update; /* Handle route map updates */
134 u_int32_t rmap_update_timer; /* Route map update timer */
135 /* $FRR indent$ */
136 /* clang-format off */
5fe9f963 137#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
19df7279 138
d62a17ae 139 QOBJ_FIELDS
718e3744 140};
19df7279 141DECLARE_QOBJ_TYPE(bgp_master)
718e3744 142
73ac8160 143/* BGP route-map structure. */
d62a17ae 144struct bgp_rmap {
145 char *name;
146 struct route_map *map;
73ac8160
DS		 147};
148
d62a17ae 149struct bgp_redist {
150 u_short instance;
7c8ff89e 151
d62a17ae 152 /* BGP redistribute metric configuration. */
153 u_char redist_metric_flag;
154 u_int32_t redist_metric;
7c8ff89e 155
d62a17ae 156 /* BGP redistribute route-map. */
157 struct bgp_rmap rmap;
7c8ff89e
DS		 158};
159
ad4cbda1 160/*
161 * Type of 'struct bgp'.
162 * - Default: The default instance
163 * - VRF: A specific (non-default) VRF
164 * - View: An instance used for route exchange
165 * The "default" instance is treated separately to simplify the code. Note
166 * that if deployed in a Multi-VRF environment, it may not exist.
167 */
d62a17ae 168enum bgp_instance_type {
169 BGP_INSTANCE_TYPE_DEFAULT,
170 BGP_INSTANCE_TYPE_VRF,
171 BGP_INSTANCE_TYPE_VIEW
ad4cbda1 172};
173
718e3744 174/* BGP instance structure. */
d62a17ae 175struct bgp {
176 /* AS number of this BGP instance. */
177 as_t as;
178
179 /* Name of this BGP instance. */
180 char *name;
181
182 /* Type of instance and VRF id. */
183 enum bgp_instance_type inst_type;
184 vrf_id_t vrf_id;
185
186 /* Reference count to allow peer_delete to finish after bgp_delete */
187 int lock;
188
189 /* Self peer. */
190 struct peer *peer_self;
191
192 /* BGP peer. */
193 struct list *peer;
194 struct hash *peerhash;
195
196 /* BGP peer group. */
197 struct list *group;
198
199 /* The maximum number of BGP dynamic neighbors that can be created */
200 int dynamic_neighbors_limit;
201
202 /* The current number of BGP dynamic neighbors */
203 int dynamic_neighbors_count;
204
205 struct hash *update_groups[BGP_AF_MAX];
206
207 /*
208 * Global statistics for update groups.
209 */
210 struct {
211 u_int32_t join_events;
212 u_int32_t prune_events;
213 u_int32_t merge_events;
214 u_int32_t split_events;
215 u_int32_t updgrp_switch_events;
216 u_int32_t peer_refreshes_combined;
217 u_int32_t adj_count;
218 u_int32_t merge_checks_triggered;
219
220 u_int32_t updgrps_created;
221 u_int32_t updgrps_deleted;
222 u_int32_t subgrps_created;
223 u_int32_t subgrps_deleted;
224 } update_group_stats;
225
226 /* BGP configuration. */
227 u_int16_t config;
c2d58d6d 228#define BGP_CONFIG_CLUSTER_ID (1 << 0)
229#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 230
d62a17ae 231 /* BGP router identifier. */
232 struct in_addr router_id;
233 struct in_addr router_id_static;
234 struct in_addr router_id_zebra;
718e3744 235
d62a17ae 236 /* BGP route reflector cluster ID. */
237 struct in_addr cluster_id;
718e3744 238
d62a17ae 239 /* BGP confederation information. */
240 as_t confed_id;
241 as_t *confed_peers;
242 int confed_peers_cnt;
718e3744 243
d62a17ae 244 struct thread
245 *t_startup; /* start-up timer on only once at the beginning */
abc920f8 246
d62a17ae 247 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
248 /* $FRR indent$ */
249 /* clang-format off */
abc920f8 250#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
d62a17ae 251 u_int32_t maxmed_onstartup_value; /* Max-med value when active on
252 start-up */
253 struct thread
254 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
255 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
256
257 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
258 /* $FRR indent$ */
259 /* clang-format off */
abc920f8 260#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
9d303b37
DL		 261 u_int32_t
262 maxmed_admin_value; /* Max-med value when administrative in on
d62a17ae 263 */
abc920f8
DS		 264#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
265
9d303b37
DL		 266 u_char maxmed_active; /* 1/0 if max-med is active or not */
267 u_int32_t maxmed_value; /* Max-med value when its active */
d62a17ae 268
269 /* BGP update delay on startup */
270 struct thread *t_update_delay;
271 struct thread *t_establish_wait;
272 u_char update_delay_over;
273 u_char main_zebra_update_hold;
274 u_char main_peers_update_hold;
275 u_int16_t v_update_delay;
276 u_int16_t v_establish_wait;
277 char update_delay_begin_time[64];
278 char update_delay_end_time[64];
279 char update_delay_zebra_resume_time[64];
280 char update_delay_peers_resume_time[64];
281 u_int32_t established;
282 u_int32_t restarted_peers;
283 u_int32_t implicit_eors;
284 u_int32_t explicit_eors;
f188f2c4
DS		 285#define BGP_UPDATE_DELAY_DEF 0
286#define BGP_UPDATE_DELAY_MIN 0
287#define BGP_UPDATE_DELAY_MAX 3600
288
d62a17ae 289 /* BGP flags. */
290 u_int32_t flags;
718e3744 291#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
292#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
293#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
294#define BGP_FLAG_MED_CONFED (1 << 3)
295#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
296#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
297#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
298#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
299#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
300#define BGP_FLAG_IMPORT_CHECK (1 << 9)
301#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 302#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 303#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 304#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 305#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 306#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 307#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 308#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 309#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 310#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
6a9a3cde 311#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
7f323236 312#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
718e3744 313
d62a17ae 314 /* BGP Per AF flags */
315 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 316#define BGP_CONFIG_DAMPENING (1 << 0)
317
d62a17ae 318 /* Route table for next-hop lookup cache. */
319 struct bgp_table *nexthop_cache_table[AFI_MAX];
6aeb9e78 320
d62a17ae 321 /* Route table for import-check */
322 struct bgp_table *import_check_table[AFI_MAX];
6aeb9e78 323
d62a17ae 324 struct bgp_table *connected_table[AFI_MAX];
6aeb9e78 325
d62a17ae 326 struct hash *address_hash;
6aeb9e78 327
db0e1937
MK		 328 /* DB for all local tunnel-ips - used mainly for martian checks
329 Currently it only has all VxLan tunnel IPs*/
330 struct hash *tip_hash;
331
d62a17ae 332 /* Static route configuration. */
333 struct bgp_table *route[AFI_MAX][SAFI_MAX];
718e3744 334
d62a17ae 335 /* Aggregate address configuration. */
336 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
718e3744 337
d62a17ae 338 /* BGP routing information base. */
339 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
718e3744 340
d62a17ae 341 /* BGP table route-map. */
342 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
73ac8160 343
d62a17ae 344 /* BGP redistribute configuration. */
345 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 346
318cac96
DW		 347 /* Allocate MPLS labels */
348 u_char allocate_mpls_labels[AFI_MAX][SAFI_MAX];
349
d62a17ae 350 /* timer to re-evaluate neighbor default-originate route-maps */
351 struct thread *t_rmap_def_originate_eval;
0de4848d
DS		 352#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
353
d62a17ae 354 /* BGP distance configuration. */
355 u_char distance_ebgp[AFI_MAX][SAFI_MAX];
356 u_char distance_ibgp[AFI_MAX][SAFI_MAX];
357 u_char distance_local[AFI_MAX][SAFI_MAX];
358
359 /* BGP default local-preference. */
360 u_int32_t default_local_pref;
361
362 /* BGP default subgroup pkt queue max */
363 u_int32_t default_subgroup_pkt_queue_max;
364
365 /* BGP default timer. */
366 u_int32_t default_holdtime;
367 u_int32_t default_keepalive;
368
369 /* BGP graceful restart */
370 u_int32_t restart_time;
371 u_int32_t stalepath_time;
372
373 /* Maximum-paths configuration */
374 struct bgp_maxpaths_cfg {
375 u_int16_t maxpaths_ebgp;
376 u_int16_t maxpaths_ibgp;
377 u_int16_t ibgp_flags;
5e242b0d 378#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
d62a17ae 379 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9 380
d62a17ae 381 u_int32_t wpkt_quanta; /* per peer packet quanta to write */
382 u_int32_t coalesce_time;
adbac85e 383
d62a17ae 384 u_int32_t addpath_tx_id;
385 int addpath_tx_used[AFI_MAX][SAFI_MAX];
65efcfce
LB		 386
387#if ENABLE_BGP_VNC
d62a17ae 388 struct rfapi_cfg *rfapi_cfg;
389 struct rfapi *rfapi;
65efcfce 390#endif
19df7279 391
d62a17ae 392 /* EVPN related information */
14c1a7bf 393
d62a17ae 394 /* EVI hash table */
395 struct hash *vnihash;
14c1a7bf 396
1a98c087
MK		 397 /* EVPN enable - advertise gateway macip routes */
398 int advertise_gw_macip;
399
d62a17ae 400 /* EVPN enable - advertise local VNIs and their MACs etc. */
401 int advertise_all_vni;
14c1a7bf 402
d62a17ae 403 /* Hash table of Import RTs to EVIs */
404 struct hash *import_rt_hash;
14c1a7bf 405
d62a17ae 406 /* Id space for automatic RD derivation for an EVI */
407 bitfield_t rd_idspace;
14c1a7bf 408
d62a17ae 409 QOBJ_FIELDS
718e3744 410};
19df7279 411DECLARE_QOBJ_TYPE(bgp)
718e3744 412
2a3d5731 413#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 414
d62a17ae 415#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
416 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
417 || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
418 && bgp->vrf_id != VRF_UNKNOWN))
ad4cbda1 419
718e3744 420/* BGP peer-group support. */
d62a17ae 421struct peer_group {
422 /* Name of the peer-group. */
423 char *name;
718e3744 424
d62a17ae 425 /* Pointer to BGP. */
426 struct bgp *bgp;
718e3744 427
d62a17ae 428 /* Peer-group client list. */
429 struct list *peer;
f14e6fdb 430
d62a17ae 431 /** Dynamic neighbor listening ranges */
432 struct list *listen_range[AFI_MAX];
433
434 /* Peer-group config */
435 struct peer *conf;
718e3744 436};
437
438/* BGP Notify message format. */
d62a17ae 439struct bgp_notify {
440 u_char code;
441 u_char subcode;
442 char *data;
443 bgp_size_t length;
444 u_char *raw_data;
718e3744 445};
446
447/* Next hop self address. */
d62a17ae 448struct bgp_nexthop {
449 struct interface *ifp;
450 struct in_addr v4;
451 struct in6_addr v6_global;
452 struct in6_addr v6_local;
718e3744 453};
454
a82478b9
DS		 455/* BGP addpath values */
456#define BGP_ADDPATH_RX 1
457#define BGP_ADDPATH_TX 2
458#define BGP_ADDPATH_ID_LEN 4
459
adbac85e
DW		 460#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
461
718e3744 462/* BGP router distinguisher value. */
463#define BGP_RD_SIZE 8
464
d62a17ae 465struct bgp_rd {
466 u_char val[BGP_RD_SIZE];
718e3744 467};
468
2a3d5731
DW		 469#define RMAP_IN 0
470#define RMAP_OUT 1
471#define RMAP_MAX 2
fee0f4c6 472
65efcfce
LB		 473#include "filter.h"
474
718e3744 475/* BGP filter structure. */
d62a17ae 476struct bgp_filter {
477 /* Distribute-list. */
478 struct {
479 char *name;
480 struct access_list *alist;
481 } dlist[FILTER_MAX];
482
483 /* Prefix-list. */
484 struct {
485 char *name;
486 struct prefix_list *plist;
487 } plist[FILTER_MAX];
488
489 /* Filter-list. */
490 struct {
491 char *name;
492 struct as_list *aslist;
493 } aslist[FILTER_MAX];
494
495 /* Route-map. */
496 struct {
497 char *name;
498 struct route_map *map;
499 } map[RMAP_MAX];
500
501 /* Unsuppress-map. */
502 struct {
503 char *name;
504 struct route_map *map;
505 } usmap;
718e3744 506};
507
6d85b15b
JBD		 508/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
509 a peer who's AS is part of our Confederation. */
d62a17ae 510typedef enum {
511 BGP_PEER_IBGP = 1,
512 BGP_PEER_EBGP,
513 BGP_PEER_INTERNAL,
514 BGP_PEER_CONFED,
6d85b15b
JBD		 515} bgp_peer_sort_t;
516
d6661008
DS		 517/* BGP message header and packet size. */
518#define BGP_MARKER_SIZE 16
519#define BGP_HEADER_SIZE 19
520#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 521#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 522
3f9c7369
DS		 523/*
524 * Trigger delay for bgp_announce_route().
525 */
526#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
527#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
528
d62a17ae 529struct peer_af {
530 /* back pointer to the peer */
531 struct peer *peer;
3f9c7369 532
d62a17ae 533 /* which subgroup the peer_af belongs to */
534 struct update_subgroup *subgroup;
3f9c7369 535
d62a17ae 536 /* for being part of an update subgroup's peer list */
537 LIST_ENTRY(peer_af) subgrp_train;
3f9c7369 538
d62a17ae 539 /* for being part of a packet's peer list */
540 LIST_ENTRY(peer_af) pkt_train;
3f9c7369 541
d62a17ae 542 struct bpacket *next_pkt_to_send;
3f9c7369 543
d62a17ae 544 /*
545 * Trigger timer for bgp_announce_route().
546 */
547 struct thread *t_announce_route;
3f9c7369 548
d62a17ae 549 afi_t afi;
550 safi_t safi;
551 int afid;
3f9c7369
DS		 552};
553
718e3744 554/* BGP neighbor structure. */
d62a17ae 555struct peer {
556 /* BGP structure. */
557 struct bgp *bgp;
558
559 /* reference count, primarily to allow bgp_process'ing of route_node's
560 * to be done after a struct peer is deleted.
561 *
562 * named 'lock' for hysterical reasons within Quagga.
563 */
564 int lock;
565
566 /* BGP peer group. */
567 struct peer_group *group;
568 uint64_t version[AFI_MAX][SAFI_MAX];
569
570 /* BGP peer_af structures, per configured AF on this peer */
571 struct peer_af *peer_af_array[BGP_AF_MAX];
572
573 /* Peer's remote AS number. */
574 int as_type;
575 as_t as;
576
577 /* Peer's local AS number. */
578 as_t local_as;
579
580 bgp_peer_sort_t sort;
581
582 /* Peer's Change local AS number. */
583 as_t change_local_as;
584
585 /* Remote router ID. */
586 struct in_addr remote_id;
587
588 /* Local router ID. */
589 struct in_addr local_id;
590
591 /* Packet receive and send buffer. */
424ab01d
QY		 592 pthread_mutex_t io_mtx; // guards ibuf, obuf
593 struct stream_fifo *ibuf; // packets waiting to be processed
594 struct stream_fifo *obuf; // packets waiting to be written
595
596 struct stream *ibuf_work; // WiP buffer used by bgp_read() only
597 struct stream *obuf_work; // WiP buffer used to construct packets
598
599 struct stream *curr; // the current packet being parsed
d62a17ae 600
601 /* We use a separate stream to encode MP_REACH_NLRI for efficient
424ab01d 602 * NLRI packing. peer->obuf_work stores all the other attributes. The
d62a17ae 603 * actual packet is then constructed by concatenating the two.
604 */
605 struct stream *scratch;
606
607 /* the doppelganger peer structure, due to dual TCP conn setup */
608 struct peer *doppelganger;
609
610 /* Status of the peer. */
611 int status;
612 int ostatus;
613
614 /* FSM events, stored for debug purposes.
615 * Note: uchar used for reduced memory usage.
616 */
617 unsigned char cur_event;
618 unsigned char last_event;
619 unsigned char last_major_event;
620
621 /* Peer index, used for dumping TABLE_DUMP_V2 format */
622 uint16_t table_dump_index;
623
624 /* Peer information */
625 int fd; /* File descriptor */
626 int ttl; /* TTL of TCP connection to the peer. */
627 int rtt; /* Estimated round-trip-time from TCP_INFO */
628 int gtsm_hops; /* minimum hopcount to peer */
629 char *desc; /* Description of the peer. */
630 unsigned short port; /* Destination port for peer */
631 char *host; /* Printable address of the peer. */
632 union sockunion su; /* Sockunion address of the peer. */
633 /* $FRR indent$ */
634 /* clang-format off */
a80beece 635#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
d62a17ae 636 time_t uptime; /* Last Up/Down time */
637 time_t readtime; /* Last read time */
638 time_t resettime; /* Last reset time */
639
640 ifindex_t ifindex; /* ifindex of the BGP connection. */
641 char *conf_if; /* neighbor interface config name. */
642 struct interface *ifp; /* corresponding interface */
643 char *ifname; /* bind interface name. */
644 char *update_if;
645 union sockunion *update_source;
646
647 union sockunion *su_local; /* Sockunion of local address. */
648 union sockunion *su_remote; /* Sockunion of remote address. */
649 int shared_network; /* Is this peer shared same network. */
650 struct bgp_nexthop nexthop; /* Nexthop */
651
652 /* Peer address family configuration. */
653 u_char afc[AFI_MAX][SAFI_MAX];
654 u_char afc_nego[AFI_MAX][SAFI_MAX];
655 u_char afc_adv[AFI_MAX][SAFI_MAX];
656 u_char afc_recv[AFI_MAX][SAFI_MAX];
657
658 /* Capability flags (reset in bgp_stop) */
659 u_int32_t cap;
718e3744 660#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
661#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
662#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
663#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
664#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 665#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
666#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 667#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
668#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 669#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
670#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 671#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
672#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 673#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
674#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 675#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
676#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 677
d62a17ae 678 /* Capability flags (reset in bgp_stop) */
679 u_int32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 680#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
681#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
682#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
683#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
684#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
685#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 686#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
687#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 688#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
689#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
690#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
691#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 692#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
693#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
694#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 695
d62a17ae 696 /* Global configuration flags. */
697 u_int32_t flags;
718e3744 698#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
699#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
700#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
701#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
702#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 703#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 704#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 705#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 706#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 707#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
708#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 709#define PEER_FLAG_LONESOUL (1 << 11)
710#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
711#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 712#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
65efcfce 713#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
02a82b47 714
d62a17ae 715 /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
716 char *tx_shutdown_message;
718e3744 717
d62a17ae 718 /* NSF mode (graceful restart) */
719 u_char nsf[AFI_MAX][SAFI_MAX];
93406d87 720
d62a17ae 721 /* Per AF configuration flags. */
722 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
718e3744 723#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
724#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
725#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
726#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
727#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
728#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
729#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
730#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
731#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
732#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
733#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
734#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
735#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
736#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
737#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
738#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 739#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 740#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 741#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
742#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 743#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 744#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 745#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 746#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
d93f7ffc 747#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
aac9ef6c 748#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
57d187bc 749#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
0df7c91f 750
d62a17ae 751 /* MD5 password */
752 char *password;
718e3744 753
d62a17ae 754 /* default-originate route-map. */
755 struct {
756 char *name;
757 struct route_map *map;
758 } default_rmap[AFI_MAX][SAFI_MAX];
718e3744 759
d62a17ae 760 /* Peer status flags. */
761 u_int16_t sflags;
718e3744 762#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
763#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
764#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
765#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
766#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 767#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
768#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 769
d62a17ae 770 /* Peer status af flags (reset in bgp_stop) */
771 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
718e3744 772#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
773#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 774#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
775#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
776#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
777#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 778
d62a17ae 779 /* Default attribute value for the peer. */
780 u_int32_t config;
d93f7ffc
DW		 781#define PEER_CONFIG_TIMER (1 << 0) /* keepalive & holdtime */
782#define PEER_CONFIG_CONNECT (1 << 1) /* connect */
783#define PEER_CONFIG_ROUTEADV (1 << 2) /* route advertise */
d25e4efc
DS		 784#define PEER_GROUP_CONFIG_TIMER (1 << 3) /* timers from peer-group */
785
786#define PEER_OR_GROUP_TIMER_SET(peer) \
787 (CHECK_FLAG(peer->config, PEER_CONFIG_TIMER) \
788 || CHECK_FLAG(peer->config, PEER_GROUP_CONFIG_TIMER))
8ffedcea 789
d62a17ae 790 u_int32_t holdtime;
791 u_int32_t keepalive;
792 u_int32_t connect;
793 u_int32_t routeadv;
794
795 /* Timer values. */
796 u_int32_t v_start;
797 u_int32_t v_connect;
798 u_int32_t v_holdtime;
799 u_int32_t v_keepalive;
800 u_int32_t v_routeadv;
801 u_int32_t v_pmax_restart;
802 u_int32_t v_gr_restart;
803
804 /* Threads. */
805 struct thread *t_read;
424ab01d 806 struct thread *t_write;
d62a17ae 807 struct thread *t_start;
424ab01d 808 struct thread *t_connect_check;
d62a17ae 809 struct thread *t_connect;
810 struct thread *t_holdtime;
d62a17ae 811 struct thread *t_routeadv;
812 struct thread *t_pmax_restart;
813 struct thread *t_gr_restart;
814 struct thread *t_gr_stale;
56257a44 815 struct thread *t_generate_updgrp_packets;
424ab01d 816 struct thread *t_process_packet;
d62a17ae 817
49507a6f
QY		 818 /* Thread flags. */
819 u_int16_t thread_flags;
424ab01d
QY		 820#define PEER_THREAD_WRITES_ON (1 << 1)
821#define PEER_THREAD_READS_ON (1 << 2)
822#define PEER_THREAD_KEEPALIVES_ON (1 << 3)
d62a17ae 823 /* workqueues */
824 struct work_queue *clear_node_queue;
825
826 /* Statistics field */
827 u_int32_t open_in; /* Open message input count */
828 u_int32_t open_out; /* Open message output count */
829 u_int32_t update_in; /* Update message input count */
830 u_int32_t update_out; /* Update message ouput count */
831 time_t update_time; /* Update message received time. */
832 u_int32_t keepalive_in; /* Keepalive input count */
833 u_int32_t keepalive_out; /* Keepalive output count */
834 u_int32_t notify_in; /* Notify input count */
835 u_int32_t notify_out; /* Notify output count */
836 u_int32_t refresh_in; /* Route Refresh input count */
837 u_int32_t refresh_out; /* Route Refresh output count */
838 u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
839 u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
840
841 /* BGP state count */
842 u_int32_t established; /* Established */
843 u_int32_t dropped; /* Dropped */
844
845 /* Update delay related fields */
846 u_char update_delay_over; /* When this is set, BGP is no more waiting
847 for EOR */
848
849 /* Syncronization list and time. */
850 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
851 time_t synctime;
852 time_t last_write; /* timestamp when the last msg was written */
853 time_t last_update; /* timestamp when the last UPDATE msg was written */
854
855 /* Send prefix count. */
856 unsigned long scount[AFI_MAX][SAFI_MAX];
857
858 /* Announcement attribute hash. */
859 struct hash *hash[AFI_MAX][SAFI_MAX];
860
861 /* Notify data. */
862 struct bgp_notify notify;
863
d62a17ae 864 /* Filter structure. */
865 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
866
867 /* ORF Prefix-list */
868 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
869
870 /* Text description of last attribute rcvd */
871 char rcvd_attr_str[BUFSIZ];
872
873 /* Track if we printed the attribute in debugs */
874 int rcvd_attr_printed;
875
876 /* Prefix count. */
877 unsigned long pcount[AFI_MAX][SAFI_MAX];
878
879 /* Max prefix count. */
880 unsigned long pmax[AFI_MAX][SAFI_MAX];
881 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
882 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 883#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 884
d62a17ae 885 /* allowas-in. */
886 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 887
d62a17ae 888 /* weight */
889 unsigned long weight[AFI_MAX][SAFI_MAX];
d93f7ffc 890
d62a17ae 891 /* peer reset cause */
892 char last_reset;
e0701b79 893#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
894#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
895#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
896#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
897#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
898#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
899#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
900#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
901#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
902#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
903#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
904#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
905#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
906#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
907#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
908#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
909#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
910#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
911#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
912#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
913#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 914#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 915#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 916#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
e60480bd
DD		 917#define PEER_DOWN_IF_DOWN 25 /* Interface down */
918#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
d62a17ae 919 unsigned long last_reset_cause_size;
920 u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 921
d62a17ae 922 /* The kind of route-map Flags.*/
923 u_char rmap_type;
ac41b2a2 924#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
925#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
926#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
927#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
928#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
929#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 930#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
931#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 932
d62a17ae 933 /* peer specific BFD information */
934 struct bfd_info *bfd_info;
04b6bdc0 935
d62a17ae 936 /* hostname and domainname advertised by host */
937 char *hostname;
938 char *domainname;
19df7279 939
d62a17ae 940 QOBJ_FIELDS
718e3744 941};
19df7279 942DECLARE_QOBJ_TYPE(peer)
718e3744 943
ad4cbda1 944/* Check if suppress start/restart of sessions to peer. */
d62a17ae 945#define BGP_PEER_START_SUPPRESSED(P) \
946 (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
947 || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
ad4cbda1 948
0df7c91f
PJ		 949#define PEER_PASSWORD_MINLEN (1)
950#define PEER_PASSWORD_MAXLEN (80)
951
718e3744 952/* This structure's member directly points incoming packet data
953 stream. */
d62a17ae 954struct bgp_nlri {
955 /* AFI. */
a46a2e9b 956 uint16_t afi; /* iana_afi_t */
718e3744 957
d62a17ae 958 /* SAFI. */
a46a2e9b 959 uint8_t safi; /* iana_safi_t */
718e3744 960
d62a17ae 961 /* Pointer to NLRI byte stream. */
962 u_char *nlri;
718e3744 963
d62a17ae 964 /* Length of whole NLRI. */
965 bgp_size_t length;
718e3744 966};
967
968/* BGP versions. */
969#define BGP_VERSION_4 4
718e3744 970
971/* Default BGP port number. */
972#define BGP_PORT_DEFAULT 179
973
718e3744 974/* BGP minimum message size. */
975#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
976#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
977#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
978#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
979#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
980#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
981
982/* BGP message types. */
983#define BGP_MSG_OPEN 1
984#define BGP_MSG_UPDATE 2
985#define BGP_MSG_NOTIFY 3
986#define BGP_MSG_KEEPALIVE 4
987#define BGP_MSG_ROUTE_REFRESH_NEW 5
988#define BGP_MSG_CAPABILITY 6
989#define BGP_MSG_ROUTE_REFRESH_OLD 128
990
991/* BGP open optional parameter. */
992#define BGP_OPEN_OPT_AUTH 1
993#define BGP_OPEN_OPT_CAP 2
994
995/* BGP4 attribute type codes. */
996#define BGP_ATTR_ORIGIN 1
997#define BGP_ATTR_AS_PATH 2
998#define BGP_ATTR_NEXT_HOP 3
999#define BGP_ATTR_MULTI_EXIT_DISC 4
1000#define BGP_ATTR_LOCAL_PREF 5
1001#define BGP_ATTR_ATOMIC_AGGREGATE 6
1002#define BGP_ATTR_AGGREGATOR 7
1003#define BGP_ATTR_COMMUNITIES 8
1004#define BGP_ATTR_ORIGINATOR_ID 9
1005#define BGP_ATTR_CLUSTER_LIST 10
1006#define BGP_ATTR_DPA 11
1007#define BGP_ATTR_ADVERTISER 12
1008#define BGP_ATTR_RCID_PATH 13
1009#define BGP_ATTR_MP_REACH_NLRI 14
1010#define BGP_ATTR_MP_UNREACH_NLRI 15
1011#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 1012#define BGP_ATTR_AS4_PATH 17
1013#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 1014#define BGP_ATTR_AS_PATHLIMIT 21
f4c89855 1015#define BGP_ATTR_ENCAP 23
57d187bc 1016#define BGP_ATTR_LARGE_COMMUNITIES 32
c5a543b4 1017#define BGP_ATTR_PREFIX_SID 40
65efcfce
LB		 1018#if ENABLE_BGP_VNC
1019#define BGP_ATTR_VNC 255
1020#endif
718e3744 1021
1022/* BGP update origin. */
1023#define BGP_ORIGIN_IGP 0
1024#define BGP_ORIGIN_EGP 1
1025#define BGP_ORIGIN_INCOMPLETE 2
1026
1027/* BGP notify message codes. */
1028#define BGP_NOTIFY_HEADER_ERR 1
1029#define BGP_NOTIFY_OPEN_ERR 2
1030#define BGP_NOTIFY_UPDATE_ERR 3
1031#define BGP_NOTIFY_HOLD_ERR 4
1032#define BGP_NOTIFY_FSM_ERR 5
1033#define BGP_NOTIFY_CEASE 6
1034#define BGP_NOTIFY_CAPABILITY_ERR 7
718e3744 1035
4b4e07d2
DT		 1036#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
1037
718e3744 1038/* BGP_NOTIFY_HEADER_ERR sub codes. */
1039#define BGP_NOTIFY_HEADER_NOT_SYNC 1
1040#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
1041#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
718e3744 1042
1043/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 1044#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 1045#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
1046#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
1047#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
1048#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
1049#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
1050#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
1051#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
718e3744 1052
1053/* BGP_NOTIFY_UPDATE_ERR sub codes. */
1054#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
1055#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
1056#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
1057#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
1058#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
1059#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
1060#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
1061#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
1062#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
1063#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
1064#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
718e3744 1065
4b4e07d2 1066/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 1067#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
1068#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
1069#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
1070#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
1071#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
1072#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 1073#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
1074#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
718e3744 1075
1076/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1077#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
1078#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
1079#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
718e3744 1080
1081/* BGP finite state machine status. */
1082#define Idle 1
1083#define Connect 2
1084#define Active 3
1085#define OpenSent 4
1086#define OpenConfirm 5
1087#define Established 6
ca058a30
PJ		 1088#define Clearing 7
1089#define Deleted 8
1090#define BGP_STATUS_MAX 9
718e3744 1091
1092/* BGP finite state machine events. */
1093#define BGP_Start 1
1094#define BGP_Stop 2
1095#define TCP_connection_open 3
1096#define TCP_connection_closed 4
1097#define TCP_connection_open_failed 5
1098#define TCP_fatal_error 6
1099#define ConnectRetry_timer_expired 7
1100#define Hold_Timer_expired 8
1101#define KeepAlive_timer_expired 9
1102#define Receive_OPEN_message 10
1103#define Receive_KEEPALIVE_message 11
1104#define Receive_UPDATE_message 12
1105#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1106#define Clearing_Completed 14
1107#define BGP_EVENTS_MAX 15
718e3744 1108
1109/* BGP timers default value. */
8efe88ea 1110/* note: the DFLT_ ones depend on compile-time "defaults" selection */
5ca5f1c8 1111#define BGP_INIT_START_TIMER 1
8efe88ea
DL		 1112#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
1113#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
12179ba3 1114#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1115#define BGP_DEFAULT_IBGP_ROUTEADV 0
8efe88ea 1116#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
718e3744 1117
1118/* BGP default local preference. */
1119#define BGP_DEFAULT_LOCAL_PREF 100
1120
7f323236
DW		 1121/* BGP local-preference to send when 'bgp graceful-shutdown'
1122 * is configured */
1123#define BGP_GSHUT_LOCAL_PREF 0
1124
3f9c7369
DS		 1125/* BGP default subgroup packet queue max . */
1126#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1127
538621f2 1128/* BGP graceful restart */
1129#define BGP_DEFAULT_RESTART_TIME 120
1130#define BGP_DEFAULT_STALEPATH_TIME 360
1131
718e3744 1132/* BGP uptime string length. */
1133#define BGP_UPTIME_LEN 25
1134
1135/* Default configuration settings for bgpd. */
1136#define BGP_VTY_PORT 2605
718e3744 1137#define BGP_DEFAULT_CONFIG "bgpd.conf"
1138
1139/* Check AS path loop when we send NLRI. */
1140/* #define BGP_SEND_ASPATH_CHECK */
1141
f14e6fdb
DS		 1142/* BGP Dynamic Neighbors feature */
1143#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1144#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1145#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1146
718e3744 1147/* Flag for peer_clear_soft(). */
d62a17ae 1148enum bgp_clear_type {
1149 BGP_CLEAR_SOFT_NONE,
1150 BGP_CLEAR_SOFT_OUT,
1151 BGP_CLEAR_SOFT_IN,
1152 BGP_CLEAR_SOFT_BOTH,
1153 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1154};
1155
1156/* Macros. */
424ab01d 1157#define BGP_INPUT(P) ((P)->curr)
718e3744 1158#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
d62a17ae 1159#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
1160 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1161
718e3744 1162/* BGP error codes. */
1163#define BGP_SUCCESS 0
1164#define BGP_ERR_INVALID_VALUE -1
1165#define BGP_ERR_INVALID_FLAG -2
1166#define BGP_ERR_INVALID_AS -3
1167#define BGP_ERR_INVALID_BGP -4
1168#define BGP_ERR_PEER_GROUP_MEMBER -5
1169#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1170#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1171#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1172#define BGP_ERR_PEER_GROUP_MISMATCH -9
1173#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1174#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1175#define BGP_ERR_AS_MISMATCH -12
1176#define BGP_ERR_PEER_FLAG_CONFLICT -13
1177#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1178#define BGP_ERR_PEER_FILTER_CONFLICT -15
1179#define BGP_ERR_NOT_INTERNAL_PEER -16
1180#define BGP_ERR_REMOVE_PRIVATE_AS -17
1181#define BGP_ERR_AF_UNCONFIGURED -18
1182#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1183#define BGP_ERR_INSTANCE_MISMATCH -20
1184#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1185#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1186#define BGP_ERR_TCPSIG_FAILED -23
1187#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1188#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1189#define BGP_ERR_NO_INTERFACE_CONFIG -26
1190#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1191#define BGP_ERR_AS_OVERRIDE -28
1192#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1193#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1194#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1195#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1196#define BGP_ERR_MAX -33
63fa10b5 1197#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
9bedbb1e 1198#define BGP_ERR_PEER_SAFI_CONFLICT -35
718e3744 1199
3f9c7369
DS		 1200/*
1201 * Enumeration of different policy kinds a peer can be configured with.
1202 */
d62a17ae 1203typedef enum {
1204 BGP_POLICY_ROUTE_MAP,
1205 BGP_POLICY_FILTER_LIST,
1206 BGP_POLICY_PREFIX_LIST,
1207 BGP_POLICY_DISTRIBUTE_LIST,
3f9c7369
DS		 1208} bgp_policy_type_e;
1209
718e3744 1210extern struct bgp_master *bm;
37fe7731 1211extern unsigned int multipath_num;
718e3744 1212
718e3744 1213/* Prototypes. */
d62a17ae 1214extern void bgp_terminate(void);
1215extern void bgp_reset(void);
1216extern time_t bgp_clock(void);
1217extern void bgp_zclient_reset(void);
1218extern int bgp_nexthop_set(union sockunion *, union sockunion *,
1219 struct bgp_nexthop *, struct peer *);
1220extern struct bgp *bgp_get_default(void);
1221extern struct bgp *bgp_lookup(as_t, const char *);
1222extern struct bgp *bgp_lookup_by_name(const char *);
1223extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1224extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1225extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
04b6bdc0 1226extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
d62a17ae 1227extern void bgp_peer_conf_if_to_su_update(struct peer *);
ffd0c037 1228extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
d62a17ae 1229extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1230extern struct peer_group *peer_group_get(struct bgp *, const char *);
1231extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1232 union sockunion *,
1233 struct peer_group *);
1234extern struct prefix *
1235peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1236extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1237 struct prefix *,
1238 struct prefix **);
1239extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1240 union sockunion *);
1241extern void peer_drop_dynamic_neighbor(struct peer *);
28066f4b
DS		 1242
1243/*
1244 * Peers are incredibly easy to memory leak
1245 * due to the various ways that they are actually used
1246 * Provide some functionality to debug locks and unlocks
1247 */
1248extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1249extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1250#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1251#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1252
d62a17ae 1253extern bgp_peer_sort_t peer_sort(struct peer *peer);
1254extern int peer_active(struct peer *);
1255extern int peer_active_nego(struct peer *);
1256extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
a80beece 1257extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
d62a17ae 1258 as_t, as_t, int, afi_t, safi_t,
1259 struct peer_group *);
1260extern struct peer *peer_create_accept(struct bgp *);
1261extern void peer_xfer_config(struct peer *dst, struct peer *src);
1262extern char *peer_uptime(time_t, char *, size_t, u_char, json_object *);
856ca177 1263
d62a17ae 1264extern int bgp_config_write(struct vty *);
6b0655a2 1265
d62a17ae 1266extern void bgp_master_init(struct thread_master *master);
718e3744 1267
d62a17ae 1268extern void bgp_init(void);
419dfe6a 1269extern void bgp_pthreads_run(void);
2d4ee774 1270extern void bgp_pthreads_finish(void);
d62a17ae 1271extern void bgp_route_map_init(void);
1272extern void bgp_session_reset(struct peer *);
718e3744 1273
d62a17ae 1274extern int bgp_option_set(int);
1275extern int bgp_option_unset(int);
1276extern int bgp_option_check(int);
718e3744 1277
d62a17ae 1278extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1279extern void bgp_instance_up(struct bgp *);
1280extern void bgp_instance_down(struct bgp *);
1281extern int bgp_delete(struct bgp *);
718e3744 1282
d62a17ae 1283extern int bgp_flag_set(struct bgp *, int);
1284extern int bgp_flag_unset(struct bgp *, int);
1285extern int bgp_flag_check(struct bgp *, int);
718e3744 1286
d62a17ae 1287extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1288extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
718e3744 1289
d62a17ae 1290extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1291extern int bgp_cluster_id_unset(struct bgp *);
718e3744 1292
d62a17ae 1293extern int bgp_confederation_id_set(struct bgp *, as_t);
1294extern int bgp_confederation_id_unset(struct bgp *);
1295extern int bgp_confederation_peers_check(struct bgp *, as_t);
718e3744 1296
d62a17ae 1297extern int bgp_confederation_peers_add(struct bgp *, as_t);
1298extern int bgp_confederation_peers_remove(struct bgp *, as_t);
718e3744 1299
d62a17ae 1300extern int bgp_timers_set(struct bgp *, u_int32_t keepalive,
1301 u_int32_t holdtime);
1302extern int bgp_timers_unset(struct bgp *);
718e3744 1303
d62a17ae 1304extern int bgp_default_local_preference_set(struct bgp *, u_int32_t);
1305extern int bgp_default_local_preference_unset(struct bgp *);
718e3744 1306
d62a17ae 1307extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, u_int32_t);
1308extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
3f9c7369 1309
d62a17ae 1310extern int bgp_listen_limit_set(struct bgp *, int);
1311extern int bgp_listen_limit_unset(struct bgp *);
f14e6fdb 1312
d62a17ae 1313extern int bgp_update_delay_active(struct bgp *);
1314extern int bgp_update_delay_configured(struct bgp *);
318cac96 1315extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
d62a17ae 1316extern void peer_as_change(struct peer *, as_t, int);
1317extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1318 int, afi_t, safi_t);
1319extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1320extern int peer_delete(struct peer *peer);
1321extern int peer_group_delete(struct peer_group *);
1322extern int peer_group_remote_as_delete(struct peer_group *);
f14e6fdb 1323extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1324
d62a17ae 1325extern int peer_activate(struct peer *, afi_t, safi_t);
1326extern int peer_deactivate(struct peer *, afi_t, safi_t);
1327extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
718e3744 1328
d62a17ae 1329extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1330 struct peer_group *, as_t *);
1331extern int peer_group_unbind(struct bgp *, struct peer *, struct peer_group *);
718e3744 1332
d62a17ae 1333extern int peer_flag_set(struct peer *, u_int32_t);
1334extern int peer_flag_unset(struct peer *, u_int32_t);
718e3744 1335
d62a17ae 1336extern int peer_af_flag_set(struct peer *, afi_t, safi_t, u_int32_t);
1337extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, u_int32_t);
1338extern int peer_af_flag_check(struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1339
d62a17ae 1340extern int peer_ebgp_multihop_set(struct peer *, int);
1341extern int peer_ebgp_multihop_unset(struct peer *);
1342extern int is_ebgp_multihop_configured(struct peer *peer);
718e3744 1343
d62a17ae 1344extern int peer_description_set(struct peer *, const char *);
1345extern int peer_description_unset(struct peer *);
718e3744 1346
d62a17ae 1347extern int peer_update_source_if_set(struct peer *, const char *);
1348extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1349extern int peer_update_source_unset(struct peer *);
718e3744 1350
d62a17ae 1351extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1352 const char *);
1353extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
718e3744 1354
d62a17ae 1355extern int peer_port_set(struct peer *, u_int16_t);
1356extern int peer_port_unset(struct peer *);
718e3744 1357
d62a17ae 1358extern int peer_weight_set(struct peer *, afi_t, safi_t, u_int16_t);
1359extern int peer_weight_unset(struct peer *, afi_t, safi_t);
718e3744 1360
d62a17ae 1361extern int peer_timers_set(struct peer *, u_int32_t keepalive,
1362 u_int32_t holdtime);
1363extern int peer_timers_unset(struct peer *);
718e3744 1364
d62a17ae 1365extern int peer_timers_connect_set(struct peer *, u_int32_t);
1366extern int peer_timers_connect_unset(struct peer *);
718e3744 1367
d62a17ae 1368extern int peer_advertise_interval_set(struct peer *, u_int32_t);
1369extern int peer_advertise_interval_unset(struct peer *);
718e3744 1370
d62a17ae 1371extern void peer_interface_set(struct peer *, const char *);
1372extern void peer_interface_unset(struct peer *);
718e3744 1373
d62a17ae 1374extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1375extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
718e3744 1376
d62a17ae 1377extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1378extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
718e3744 1379
d62a17ae 1380extern int peer_local_as_set(struct peer *, as_t, int, int);
1381extern int peer_local_as_unset(struct peer *);
718e3744 1382
d62a17ae 1383extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1384 const char *);
1385extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
718e3744 1386
d62a17ae 1387extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1388extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
718e3744 1389
d62a17ae 1390extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1391extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
718e3744 1392
d62a17ae 1393extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
0df7c91f 1394
d62a17ae 1395extern int peer_password_set(struct peer *, const char *);
1396extern int peer_password_unset(struct peer *);
0df7c91f 1397
d62a17ae 1398extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
718e3744 1399
d62a17ae 1400extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, u_int32_t,
1401 u_char, int, u_int16_t);
1402extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
718e3744 1403
d62a17ae 1404extern int peer_clear(struct peer *, struct listnode **);
1405extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1406
d62a17ae 1407extern int peer_ttl_security_hops_set(struct peer *, int);
1408extern int peer_ttl_security_hops_unset(struct peer *);
fa411a21 1409
d62a17ae 1410extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1411extern int peer_tx_shutdown_message_unset(struct peer *);
73d70fa6 1412
d62a17ae 1413extern int bgp_route_map_update_timer(struct thread *thread);
518f0eb1 1414extern void bgp_route_map_terminate(void);
16286195 1415
d62a17ae 1416extern int peer_cmp(struct peer *p1, struct peer *p2);
3f9c7369 1417
5c525538 1418extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
d62a17ae 1419 afi_t *afi, safi_t *safi);
1420extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
5c525538 1421 iana_afi_t *pkt_afi, iana_safi_t *pkt_safi);
9cabb64b 1422
d62a17ae 1423extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1424extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1425extern int peer_af_delete(struct peer *, afi_t, safi_t);
3f9c7369 1426
ffd0c037 1427extern void bgp_close(void);
92375c91
JB		 1428extern void bgp_free(struct bgp *);
1429
1430static inline struct bgp *bgp_lock(struct bgp *bgp)
1431{
1432 bgp->lock++;
1433 return bgp;
1434}
1435
1436static inline void bgp_unlock(struct bgp *bgp)
1437{
1438 assert(bgp->lock > 0);
1439 if (--bgp->lock == 0)
1440 bgp_free(bgp);
1441}
ffd0c037 1442
d62a17ae 1443static inline int afindex(afi_t afi, safi_t safi)
3f9c7369 1444{
d62a17ae 1445 switch (afi) {
1446 case AFI_IP:
1447 switch (safi) {
1448 case SAFI_UNICAST:
1449 return BGP_AF_IPV4_UNICAST;
1450 break;
1451 case SAFI_MULTICAST:
1452 return BGP_AF_IPV4_MULTICAST;
1453 break;
1454 case SAFI_LABELED_UNICAST:
1455 return BGP_AF_IPV4_LBL_UNICAST;
1456 break;
1457 case SAFI_MPLS_VPN:
1458 return BGP_AF_IPV4_VPN;
1459 break;
1460 case SAFI_ENCAP:
1461 return BGP_AF_IPV4_ENCAP;
1462 break;
1463 default:
1464 return BGP_AF_MAX;
1465 break;
1466 }
1467 break;
1468 case AFI_IP6:
1469 switch (safi) {
1470 case SAFI_UNICAST:
1471 return BGP_AF_IPV6_UNICAST;
1472 break;
1473 case SAFI_MULTICAST:
1474 return BGP_AF_IPV6_MULTICAST;
1475 break;
1476 case SAFI_LABELED_UNICAST:
1477 return BGP_AF_IPV6_LBL_UNICAST;
1478 break;
1479 case SAFI_MPLS_VPN:
1480 return BGP_AF_IPV6_VPN;
1481 break;
1482 case SAFI_ENCAP:
1483 return BGP_AF_IPV6_ENCAP;
1484 break;
1485 default:
1486 return BGP_AF_MAX;
1487 break;
1488 }
1489 break;
1490 case AFI_L2VPN:
1491 switch (safi) {
1492 case SAFI_EVPN:
1493 return BGP_AF_L2VPN_EVPN;
1494 break;
1495 default:
1496 return BGP_AF_MAX;
1497 break;
1498 }
3f9c7369 1499 default:
d62a17ae 1500 return BGP_AF_MAX;
1501 break;
3f9c7369 1502 }
3f9c7369
DS		 1503}
1504
c8560b44 1505/* If the peer is not a peer-group but is bound to a peer-group return 1 */
d62a17ae 1506static inline int peer_group_active(struct peer *peer)
3f9c7369 1507{
d62a17ae 1508 if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1509 return 1;
1510 return 0;
3f9c7369
DS		 1511}
1512
1513/* If peer is negotiated at least one address family return 1. */
d62a17ae 1514static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
3f9c7369 1515{
d62a17ae 1516 if (peer->afc_nego[afi][SAFI_UNICAST]
1517 || peer->afc_nego[afi][SAFI_MULTICAST]
1518 || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1519 || peer->afc_nego[afi][SAFI_MPLS_VPN]
1520 || peer->afc_nego[afi][SAFI_ENCAP]
1521 || peer->afc_nego[afi][SAFI_EVPN])
1522 return 1;
1523 return 0;
3f9c7369
DS		 1524}
1525
f14e6fdb 1526/* If at least one address family activated for group, return 1. */
d62a17ae 1527static inline int peer_group_af_configured(struct peer_group *group)
f14e6fdb 1528{
d62a17ae 1529 struct peer *peer = group->conf;
1530
1531 if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1532 || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
1533 || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1534 || peer->afc[AFI_IP6][SAFI_UNICAST]
1535 || peer->afc[AFI_IP6][SAFI_MULTICAST]
1536 || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1537 || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
ba0fcaf6 1538 || peer->afc[AFI_IP6][SAFI_ENCAP]
1539 || peer->afc[AFI_L2VPN][SAFI_EVPN])
d62a17ae 1540 return 1;
1541 return 0;
f14e6fdb
DS		 1542}
1543
d62a17ae 1544static inline char *timestamp_string(time_t ts)
3f9c7369 1545{
d62a17ae 1546 time_t tbuf;
1547 tbuf = time(NULL) - (bgp_clock() - ts);
1548 return ctime(&tbuf);
3f9c7369
DS		 1549}
1550
d62a17ae 1551static inline int peer_established(struct peer *peer)
3f9c7369 1552{
d62a17ae 1553 if (peer->status == Established)
1554 return 1;
1555 return 0;
3f9c7369
DS		 1556}
1557
d62a17ae 1558static inline int peer_dynamic_neighbor(struct peer *peer)
f14e6fdb 1559{
d62a17ae 1560 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
f14e6fdb
DS		 1561}
1562
d62a17ae 1563static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
8a92a8a0 1564{
d62a17ae 1565 return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
8a92a8a0
DS		 1566}
1567
d1be1f08 1568/* Lookup VRF for BGP instance based on its type. */
d62a17ae 1569static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
d1be1f08 1570{
d62a17ae 1571 struct vrf *vrf;
d1be1f08 1572
d62a17ae 1573 if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1574 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1575 else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1576 vrf = vrf_lookup_by_name(bgp->name);
1577 else
1578 vrf = NULL;
d1be1f08 1579
d62a17ae 1580 return vrf;
d1be1f08 1581}
1582
1583/* Link BGP instance to VRF. */
d62a17ae 1584static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1585{
d62a17ae 1586 bgp->vrf_id = vrf->vrf_id;
92375c91
JB		 1587 if (vrf->info != (void *)bgp)
1588 vrf->info = (void *)bgp_lock(bgp);
d1be1f08 1589}
1590
1591/* Unlink BGP instance from VRF. */
d62a17ae 1592static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
d1be1f08 1593{
d62a17ae 1594 if (vrf->info == (void *)bgp) {
1595 vrf->info = NULL;
1596 bgp_unlock(bgp);
1597 }
1598 bgp->vrf_id = VRF_UNKNOWN;
d1be1f08 1599}
1600
d62a17ae 1601extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
65efcfce
LB		 1602
1603/* For benefit of rfapi */
d62a17ae 1604extern struct peer *peer_new(struct bgp *bgp);
65efcfce 1605
00d252cb 1606#endif /* _QUAGGA_BGPD_H */
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