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Zebra: Cleanup and update RA debugs
[mirror_frr.git] / bgpd / bgpd.h
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718e3744 1/* BGP message definition header.
2 Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3
4This file is part of GNU Zebra.
5
6GNU Zebra is free software; you can redistribute it and/or modify it
7under the terms of the GNU General Public License as published by the
8Free Software Foundation; either version 2, or (at your option) any
9later version.
10
11GNU Zebra is distributed in the hope that it will be useful, but
12WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GNU Zebra; see the file COPYING. If not, write to the Free
18Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1902111-1307, USA. */
20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
856ca177 24#include "lib/json.h"
6aeb9e78
DS		 25#include "vrf.h"
26
718e3744 27/* For union sockunion. */
3f9c7369 28#include "queue.h"
718e3744 29#include "sockunion.h"
518f0eb1 30#include "routemap.h"
ffd0c037 31#include "linklist.h"
718e3744 32
04b6bdc0
DW		 33#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
34
3f9c7369
DS		 35struct update_subgroup;
36struct bpacket;
37
0299c004
DS		 38/*
39 * Allow the neighbor XXXX remote-as to take internal or external
40 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement behavior
41 * in the system.
42 */
43enum {
44 AS_UNSPECIFIED = 0,
45 AS_SPECIFIED,
46 AS_INTERNAL,
47 AS_EXTERNAL,
48};
49
718e3744 50/* Typedef BGP specific types. */
0b2aa3a0
PJ		 51typedef u_int32_t as_t;
52typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
718e3744 53typedef u_int16_t bgp_size_t;
54
3f9c7369
DS		 55#define max(a,b) \
56 ({ __typeof__ (a) _a = (a); \
57 __typeof__ (b) _b = (b); \
58 _a > _b ? _a : _b; })
59
60enum bgp_af_index
61{
62 BGP_AF_START,
63 BGP_AF_IPV4_UNICAST = BGP_AF_START,
64 BGP_AF_IPV4_MULTICAST,
65 BGP_AF_IPV4_VPN,
66 BGP_AF_IPV6_UNICAST,
67 BGP_AF_IPV6_MULTICAST,
68 BGP_AF_MAX
69};
70
71#define AF_FOREACH(af) \
72 for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
73
74#define FOREACH_AFI_SAFI(afi, safi) \
75 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
76 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
77
718e3744 78/* BGP master for system wide configurations and variables. */
79struct bgp_master
80{
81 /* BGP instance list. */
82 struct list *bgp;
83
87d4a781
DS		 84 /* BGP thread master. */
85 struct thread_master *master;
86
200df115 87 /* work queues */
88 struct work_queue *process_main_queue;
200df115 89
0df7c91f
PJ		 90 /* Listening sockets */
91 struct list *listen_sockets;
92
718e3744 93 /* BGP port number. */
94 u_int16_t port;
95
3a02d1f7
PJ		 96 /* Listener address */
97 char *address;
98
718e3744 99 /* BGP start time. */
100 time_t start_time;
101
102 /* Various BGP global configuration. */
103 u_char options;
104#define BGP_OPT_NO_FIB (1 << 0)
105#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
106#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 107#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369
DS		 108
109 u_int64_t updgrp_idspace;
110 u_int64_t subgrp_idspace;
718e3744 111};
112
73ac8160
DS		 113/* BGP route-map structure. */
114struct bgp_rmap
115{
116 char *name;
117 struct route_map *map;
118};
119
7c8ff89e
DS		 120struct bgp_redist
121{
122 u_short instance;
123
124 /* BGP redistribute metric configuration. */
125 u_char redist_metric_flag;
126 u_int32_t redist_metric;
127
128 /* BGP redistribute route-map. */
129 struct bgp_rmap rmap;
130};
131
ad4cbda1 132/*
133 * Type of 'struct bgp'.
134 * - Default: The default instance
135 * - VRF: A specific (non-default) VRF
136 * - View: An instance used for route exchange
137 * The "default" instance is treated separately to simplify the code. Note
138 * that if deployed in a Multi-VRF environment, it may not exist.
139 */
140enum bgp_instance_type
141{
142 BGP_INSTANCE_TYPE_DEFAULT,
143 BGP_INSTANCE_TYPE_VRF,
144 BGP_INSTANCE_TYPE_VIEW
145};
146
718e3744 147/* BGP instance structure. */
148struct bgp
149{
150 /* AS number of this BGP instance. */
151 as_t as;
152
153 /* Name of this BGP instance. */
154 char *name;
6aeb9e78 155
ad4cbda1 156 /* Type of instance and VRF id. */
157 enum bgp_instance_type inst_type;
6aeb9e78 158 vrf_id_t vrf_id;
200df115 159
0088b5dc
SH		 160 /* Reference count to allow peer_delete to finish after bgp_delete */
161 int lock;
162
718e3744 163 /* Self peer. */
164 struct peer *peer_self;
165
166 /* BGP peer. */
167 struct list *peer;
dd793e4a 168 struct hash *peerhash;
718e3744 169
170 /* BGP peer group. */
171 struct list *group;
172
f14e6fdb
DS		 173 /* The maximum number of BGP dynamic neighbors that can be created */
174 int dynamic_neighbors_limit;
175
176 /* The current number of BGP dynamic neighbors */
177 int dynamic_neighbors_count;
178
3f9c7369
DS		 179 struct hash *update_groups[BGP_AF_MAX];
180
181 /*
182 * Global statistics for update groups.
183 */
184 struct {
185 u_int32_t join_events;
186 u_int32_t prune_events;
187 u_int32_t merge_events;
188 u_int32_t split_events;
189 u_int32_t updgrp_switch_events;
190 u_int32_t peer_refreshes_combined;
191 u_int32_t adj_count;
192 u_int32_t merge_checks_triggered;
193
194 u_int32_t updgrps_created;
195 u_int32_t updgrps_deleted;
196 u_int32_t subgrps_created;
197 u_int32_t subgrps_deleted;
198 } update_group_stats;
199
718e3744 200 /* BGP configuration. */
201 u_int16_t config;
c2d58d6d 202#define BGP_CONFIG_CLUSTER_ID (1 << 0)
203#define BGP_CONFIG_CONFEDERATION (1 << 1)
718e3744 204
205 /* BGP router identifier. */
206 struct in_addr router_id;
18a6dce6 207 struct in_addr router_id_static;
6aeb9e78 208 struct in_addr router_id_zebra;
718e3744 209
210 /* BGP route reflector cluster ID. */
211 struct in_addr cluster_id;
212
213 /* BGP confederation information. */
214 as_t confed_id;
215 as_t *confed_peers;
216 int confed_peers_cnt;
217
abc920f8
DS		 218 struct thread *t_startup; /* start-up timer on only once at the beginning */
219
220 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
221#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
222 u_int32_t maxmed_onstartup_value; /* Max-med value when active on start-up */
223 struct thread *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
224 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
225
226 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
227#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
228 u_int32_t maxmed_admin_value; /* Max-med value when administrative in on */
229#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
230
231 u_char maxmed_active; /* 1/0 if max-med is active or not */
232 u_int32_t maxmed_value; /* Max-med value when its active */
fe7d2a48 233
f188f2c4
DS		 234 /* BGP update delay on startup */
235 struct thread *t_update_delay;
236 struct thread *t_establish_wait;
237 u_char update_delay_over;
4a16ae86
DS		 238 u_char main_zebra_update_hold;
239 u_char main_peers_update_hold;
f188f2c4
DS		 240 u_int16_t v_update_delay;
241 u_int16_t v_establish_wait;
242 char update_delay_begin_time[64];
243 char update_delay_end_time[64];
4a16ae86
DS		 244 char update_delay_zebra_resume_time[64];
245 char update_delay_peers_resume_time[64];
f188f2c4
DS		 246 u_int32_t established;
247 u_int32_t restarted_peers;
248 u_int32_t implicit_eors;
249 u_int32_t explicit_eors;
250#define BGP_UPDATE_DELAY_DEF 0
251#define BGP_UPDATE_DELAY_MIN 0
252#define BGP_UPDATE_DELAY_MAX 3600
253
718e3744 254 /* BGP flags. */
8bd9d948 255 u_int32_t flags;
718e3744 256#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
257#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
258#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
259#define BGP_FLAG_MED_CONFED (1 << 3)
260#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
261#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
262#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
263#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
264#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
265#define BGP_FLAG_IMPORT_CHECK (1 << 9)
266#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 267#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 268#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 269#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 270#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 271#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 272#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 273#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 274#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 275#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
718e3744 276
277 /* BGP Per AF flags */
278 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
279#define BGP_CONFIG_DAMPENING (1 << 0)
280
6aeb9e78
DS		 281 /* Route table for next-hop lookup cache. */
282 struct bgp_table *nexthop_cache_table[AFI_MAX];
283
284 /* Route table for import-check */
285 struct bgp_table *import_check_table[AFI_MAX];
286
287 struct bgp_table *connected_table[AFI_MAX];
288
289 struct hash *address_hash;
290
718e3744 291 /* Static route configuration. */
292 struct bgp_table *route[AFI_MAX][SAFI_MAX];
293
294 /* Aggregate address configuration. */
295 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
296
297 /* BGP routing information base. */
298 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
299
73ac8160
DS		 300 /* BGP table route-map. */
301 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
302
718e3744 303 /* BGP redistribute configuration. */
7c8ff89e 304 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 305
518f0eb1
DS		 306 /* timer to dampen route map changes */
307 struct thread *t_rmap_update; /* Handle route map updates */
308 u_int32_t rmap_update_timer; /* Route map update timer */
309#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
310
0de4848d
DS		 311 /* timer to re-evaluate neighbor default-originate route-maps */
312 struct thread *t_rmap_def_originate_eval;
313#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
314
718e3744 315 /* BGP distance configuration. */
316 u_char distance_ebgp;
317 u_char distance_ibgp;
318 u_char distance_local;
319
320 /* BGP default local-preference. */
321 u_int32_t default_local_pref;
322
3f9c7369
DS		 323 /* BGP default subgroup pkt queue max */
324 u_int32_t default_subgroup_pkt_queue_max;
325
718e3744 326 /* BGP default timer. */
327 u_int32_t default_holdtime;
328 u_int32_t default_keepalive;
538621f2 329
330 /* BGP graceful restart */
93406d87 331 u_int32_t restart_time;
332 u_int32_t stalepath_time;
165b5fff
JB		 333
334 /* Maximum-paths configuration */
335 struct bgp_maxpaths_cfg {
336 u_int16_t maxpaths_ebgp;
337 u_int16_t maxpaths_ibgp;
5e242b0d
DS		 338 u_int16_t ibgp_flags;
339#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
165b5fff 340 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9
DS		 341
342 u_int32_t wpkt_quanta; /* per peer packet quanta to write */
3f9c7369 343 u_int32_t coalesce_time;
adbac85e
DW		 344
345 u_int32_t addpath_tx_id;
346 int addpath_tx_used[AFI_MAX][SAFI_MAX];
718e3744 347};
348
2a3d5731 349#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 350
ad4cbda1 351#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
352 (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT || \
353 (bgp->inst_type == BGP_INSTANCE_TYPE_VRF && bgp->vrf_id != VRF_DEFAULT))
354
718e3744 355/* BGP peer-group support. */
356struct peer_group
357{
358 /* Name of the peer-group. */
359 char *name;
360
361 /* Pointer to BGP. */
362 struct bgp *bgp;
363
364 /* Peer-group client list. */
365 struct list *peer;
366
f14e6fdb
DS		 367 /** Dynamic neighbor listening ranges */
368 struct list *listen_range[AFI_MAX];
369
718e3744 370 /* Peer-group config */
371 struct peer *conf;
372};
373
374/* BGP Notify message format. */
375struct bgp_notify
376{
377 u_char code;
378 u_char subcode;
379 char *data;
380 bgp_size_t length;
381};
382
383/* Next hop self address. */
384struct bgp_nexthop
385{
386 struct interface *ifp;
387 struct in_addr v4;
388#ifdef HAVE_IPV6
389 struct in6_addr v6_global;
390 struct in6_addr v6_local;
391#endif /* HAVE_IPV6 */
392};
393
a82478b9
DS		 394/* BGP addpath values */
395#define BGP_ADDPATH_RX 1
396#define BGP_ADDPATH_TX 2
397#define BGP_ADDPATH_ID_LEN 4
398
adbac85e
DW		 399#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
400
718e3744 401/* BGP router distinguisher value. */
402#define BGP_RD_SIZE 8
403
404struct bgp_rd
405{
406 u_char val[BGP_RD_SIZE];
407};
408
2a3d5731
DW		 409#define RMAP_IN 0
410#define RMAP_OUT 1
411#define RMAP_MAX 2
fee0f4c6 412
718e3744 413/* BGP filter structure. */
414struct bgp_filter
415{
416 /* Distribute-list. */
417 struct
418 {
419 char *name;
420 struct access_list *alist;
421 } dlist[FILTER_MAX];
422
423 /* Prefix-list. */
424 struct
425 {
426 char *name;
427 struct prefix_list *plist;
428 } plist[FILTER_MAX];
429
430 /* Filter-list. */
431 struct
432 {
433 char *name;
434 struct as_list *aslist;
435 } aslist[FILTER_MAX];
436
437 /* Route-map. */
438 struct
439 {
440 char *name;
441 struct route_map *map;
fee0f4c6 442 } map[RMAP_MAX];
718e3744 443
444 /* Unsuppress-map. */
445 struct
446 {
447 char *name;
448 struct route_map *map;
449 } usmap;
450};
451
6d85b15b
JBD		 452/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
453 a peer who's AS is part of our Confederation. */
454typedef enum
455{
456 BGP_PEER_IBGP = 1,
457 BGP_PEER_EBGP,
458 BGP_PEER_INTERNAL,
459 BGP_PEER_CONFED,
460} bgp_peer_sort_t;
461
d6661008
DS		 462/* BGP message header and packet size. */
463#define BGP_MARKER_SIZE 16
464#define BGP_HEADER_SIZE 19
465#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 466#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 467
3f9c7369
DS		 468/*
469 * Trigger delay for bgp_announce_route().
470 */
471#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
472#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
473
474struct peer_af
475{
476 /* back pointer to the peer */
477 struct peer *peer;
478
479 /* which subgroup the peer_af belongs to */
480 struct update_subgroup *subgroup;
481
482 /* for being part of an update subgroup's peer list */
483 LIST_ENTRY(peer_af) subgrp_train;
484
485 /* for being part of a packet's peer list */
486 LIST_ENTRY(peer_af) pkt_train;
487
488 struct bpacket *next_pkt_to_send;
489
490 /*
491 * Trigger timer for bgp_announce_route().
492 */
493 struct thread *t_announce_route;
494
495 afi_t afi;
496 safi_t safi;
497 int afid;
498};
499
718e3744 500/* BGP neighbor structure. */
501struct peer
502{
503 /* BGP structure. */
504 struct bgp *bgp;
505
200df115 506 /* reference count, primarily to allow bgp_process'ing of route_node's
507 * to be done after a struct peer is deleted.
508 *
509 * named 'lock' for hysterical reasons within Quagga.
510 */
511 int lock;
512
718e3744 513 /* BGP peer group. */
514 struct peer_group *group;
3f9c7369
DS		 515 u_int64_t version[AFI_MAX][SAFI_MAX];
516
517 /* BGP peer_af structures, per configured AF on this peer */
518 struct peer_af *peer_af_array[BGP_AF_MAX];
718e3744 519
520 /* Peer's remote AS number. */
0299c004
DS		 521 int as_type;
522 as_t as;
718e3744 523
524 /* Peer's local AS number. */
525 as_t local_as;
526
6d85b15b
JBD		 527 bgp_peer_sort_t sort;
528
718e3744 529 /* Peer's Change local AS number. */
530 as_t change_local_as;
531
532 /* Remote router ID. */
533 struct in_addr remote_id;
534
535 /* Local router ID. */
536 struct in_addr local_id;
537
538 /* Packet receive and send buffer. */
539 struct stream *ibuf;
540 struct stream_fifo *obuf;
541 struct stream *work;
542
8c71e481
PM		 543 /* We use a separate stream to encode MP_REACH_NLRI for efficient
544 * NLRI packing. peer->work stores all the other attributes. The
545 * actual packet is then constructed by concatenating the two.
546 */
547 struct stream *scratch;
548
1ff9a340
DS		 549 /* the doppelganger peer structure, due to dual TCP conn setup */
550 struct peer *doppelganger;
551
718e3744 552 /* Status of the peer. */
553 int status;
554 int ostatus;
555
6403814c
DS		 556 /* FSM events, stored for debug purposes.
557 * Note: uchar used for reduced memory usage.
558 */
559 unsigned char cur_event;
560 unsigned char last_event;
561 unsigned char last_major_event;
562
0b2aa3a0
PJ		 563 /* Peer index, used for dumping TABLE_DUMP_V2 format */
564 uint16_t table_dump_index;
565
718e3744 566 /* Peer information */
eb821189 567 int fd; /* File descriptor */
568 int ttl; /* TTL of TCP connection to the peer. */
fa411a21 569 int gtsm_hops; /* minimum hopcount to peer */
eb821189 570 char *desc; /* Description of the peer. */
571 unsigned short port; /* Destination port for peer */
572 char *host; /* Printable address of the peer. */
573 union sockunion su; /* Sockunion address of the peer. */
a80beece 574#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
eb821189 575 time_t uptime; /* Last Up/Down time */
576 time_t readtime; /* Last read time */
577 time_t resettime; /* Last reset time */
718e3744 578
eb821189 579 unsigned int ifindex; /* ifindex of the BGP connection. */
a80beece 580 char *conf_if; /* neighbor interface config name. */
eb821189 581 char *ifname; /* bind interface name. */
582 char *update_if;
583 union sockunion *update_source;
eb821189 584
585 union sockunion *su_local; /* Sockunion of local address. */
586 union sockunion *su_remote; /* Sockunion of remote address. */
587 int shared_network; /* Is this peer shared same network. */
588 struct bgp_nexthop nexthop; /* Nexthop */
718e3744 589
590 /* Peer address family configuration. */
591 u_char afc[AFI_MAX][SAFI_MAX];
592 u_char afc_nego[AFI_MAX][SAFI_MAX];
593 u_char afc_adv[AFI_MAX][SAFI_MAX];
594 u_char afc_recv[AFI_MAX][SAFI_MAX];
595
0a486e5f 596 /* Capability flags (reset in bgp_stop) */
6410e93a 597 u_int32_t cap;
718e3744 598#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
599#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
600#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
601#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
602#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 603#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
604#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 605#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
606#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 607#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
608#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 609#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
610#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 611#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
612#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 613#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
614#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 615
0a486e5f 616 /* Capability flags (reset in bgp_stop) */
04b6bdc0 617 u_int32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 618#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
619#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
620#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
621#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
622#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
623#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 624#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
625#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 626#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
627#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
628#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
629#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 630#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
631#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
632#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 633
634 /* Global configuration flags. */
635 u_int32_t flags;
636#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
637#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
638#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
639#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
640#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 641#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 642#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 643#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 644#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 645#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
646#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 647#define PEER_FLAG_LONESOUL (1 << 11)
648#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
649#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 650#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
718e3744 651
93406d87 652 /* NSF mode (graceful restart) */
653 u_char nsf[AFI_MAX][SAFI_MAX];
654
718e3744 655 /* Per AF configuration flags. */
656 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
657#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
658#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
659#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
660#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
661#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
662#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
663#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
664#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
665#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
666#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
667#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
668#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
669#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
670#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
671#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
672#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 673#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 674#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 675#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
676#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 677#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 678#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 679#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 680#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
0df7c91f
PJ		 681
682 /* MD5 password */
683 char *password;
718e3744 684
685 /* default-originate route-map. */
686 struct
687 {
688 char *name;
689 struct route_map *map;
690 } default_rmap[AFI_MAX][SAFI_MAX];
691
692 /* Peer status flags. */
693 u_int16_t sflags;
694#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
695#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
696#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
697#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
698#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 699#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
700#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 701
0a486e5f 702 /* Peer status af flags (reset in bgp_stop) */
718e3744 703 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
704#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
705#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 706#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
707#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
708#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
709#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 710
718e3744 711 /* Default attribute value for the peer. */
712 u_int32_t config;
713#define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
714#define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
715#define PEER_CONFIG_CONNECT (1 << 2) /* connect */
716#define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
8ffedcea 717
718e3744 718 u_int32_t weight;
719 u_int32_t holdtime;
720 u_int32_t keepalive;
721 u_int32_t connect;
722 u_int32_t routeadv;
723
724 /* Timer values. */
725 u_int32_t v_start;
726 u_int32_t v_connect;
727 u_int32_t v_holdtime;
728 u_int32_t v_keepalive;
718e3744 729 u_int32_t v_routeadv;
0a486e5f 730 u_int32_t v_pmax_restart;
93406d87 731 u_int32_t v_gr_restart;
718e3744 732
733 /* Threads. */
734 struct thread *t_read;
735 struct thread *t_write;
736 struct thread *t_start;
737 struct thread *t_connect;
738 struct thread *t_holdtime;
739 struct thread *t_keepalive;
718e3744 740 struct thread *t_routeadv;
0a486e5f 741 struct thread *t_pmax_restart;
93406d87 742 struct thread *t_gr_restart;
743 struct thread *t_gr_stale;
64e580a7
PJ		 744
745 /* workqueues */
746 struct work_queue *clear_node_queue;
747
718e3744 748 /* Statistics field */
749 u_int32_t open_in; /* Open message input count */
750 u_int32_t open_out; /* Open message output count */
751 u_int32_t update_in; /* Update message input count */
752 u_int32_t update_out; /* Update message ouput count */
753 time_t update_time; /* Update message received time. */
754 u_int32_t keepalive_in; /* Keepalive input count */
755 u_int32_t keepalive_out; /* Keepalive output count */
756 u_int32_t notify_in; /* Notify input count */
757 u_int32_t notify_out; /* Notify output count */
758 u_int32_t refresh_in; /* Route Refresh input count */
759 u_int32_t refresh_out; /* Route Refresh output count */
760 u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
761 u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
762
763 /* BGP state count */
764 u_int32_t established; /* Established */
765 u_int32_t dropped; /* Dropped */
766
f188f2c4
DS		 767 /* Update delay related fields */
768 u_char update_delay_over; /* When this is set, BGP is no more waiting for EOR */
769
718e3744 770 /* Syncronization list and time. */
771 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
772 time_t synctime;
cb1faec9 773 time_t last_write; /* timestamp when the last UPDATE msg was written */
718e3744 774
775 /* Send prefix count. */
776 unsigned long scount[AFI_MAX][SAFI_MAX];
777
778 /* Announcement attribute hash. */
779 struct hash *hash[AFI_MAX][SAFI_MAX];
780
781 /* Notify data. */
782 struct bgp_notify notify;
783
784 /* Whole packet size to be read. */
785 unsigned long packet_size;
786
787 /* Filter structure. */
788 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
789
790 /* ORF Prefix-list */
791 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
792
16286195
DS		 793 /* Text description of last attribute rcvd */
794 char rcvd_attr_str[BUFSIZ];
795
796 /* Track if we printed the attribute in debugs */
797 int rcvd_attr_printed;
798
718e3744 799 /* Prefix count. */
800 unsigned long pcount[AFI_MAX][SAFI_MAX];
801
802 /* Max prefix count. */
803 unsigned long pmax[AFI_MAX][SAFI_MAX];
e0701b79 804 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
0a486e5f 805 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 806#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 807
808 /* allowas-in. */
809 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 810
e0701b79 811 /* peer reset cause */
812 char last_reset;
813#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
814#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
815#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
816#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
817#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
818#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
819#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
820#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
821#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
822#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
823#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
824#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
825#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
826#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
827#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
828#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
829#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
830#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
831#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
832#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
833#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 834#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 835#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 836#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
d6661008
DS		 837unsigned long last_reset_cause_size;
838u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 839
ac41b2a2 840 /* The kind of route-map Flags.*/
841 u_char rmap_type;
842#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
843#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
844#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
845#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
846#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
847#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 848#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
849#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 850
c43ed2e4 851 /* peer specific BFD information */
88177fe3 852 struct bfd_info *bfd_info;
04b6bdc0
DW		 853
854 /* hostname and domainname advertised by host */
855 char *hostname;
856 char *domainname;
718e3744 857};
858
ad4cbda1 859/* Check if suppress start/restart of sessions to peer. */
860#define BGP_PEER_START_SUPPRESSED(P) \
861 (CHECK_FLAG ((P)->flags, PEER_FLAG_SHUTDOWN) \
862 || CHECK_FLAG ((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
863
0df7c91f
PJ		 864#define PEER_PASSWORD_MINLEN (1)
865#define PEER_PASSWORD_MAXLEN (80)
866
718e3744 867/* This structure's member directly points incoming packet data
868 stream. */
869struct bgp_nlri
870{
871 /* AFI. */
872 afi_t afi;
873
874 /* SAFI. */
875 safi_t safi;
876
877 /* Pointer to NLRI byte stream. */
878 u_char *nlri;
879
880 /* Length of whole NLRI. */
881 bgp_size_t length;
882};
883
884/* BGP versions. */
885#define BGP_VERSION_4 4
718e3744 886
887/* Default BGP port number. */
888#define BGP_PORT_DEFAULT 179
889
718e3744 890/* BGP minimum message size. */
891#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
892#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
893#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
894#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
895#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
896#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
897
898/* BGP message types. */
899#define BGP_MSG_OPEN 1
900#define BGP_MSG_UPDATE 2
901#define BGP_MSG_NOTIFY 3
902#define BGP_MSG_KEEPALIVE 4
903#define BGP_MSG_ROUTE_REFRESH_NEW 5
904#define BGP_MSG_CAPABILITY 6
905#define BGP_MSG_ROUTE_REFRESH_OLD 128
906
907/* BGP open optional parameter. */
908#define BGP_OPEN_OPT_AUTH 1
909#define BGP_OPEN_OPT_CAP 2
910
911/* BGP4 attribute type codes. */
912#define BGP_ATTR_ORIGIN 1
913#define BGP_ATTR_AS_PATH 2
914#define BGP_ATTR_NEXT_HOP 3
915#define BGP_ATTR_MULTI_EXIT_DISC 4
916#define BGP_ATTR_LOCAL_PREF 5
917#define BGP_ATTR_ATOMIC_AGGREGATE 6
918#define BGP_ATTR_AGGREGATOR 7
919#define BGP_ATTR_COMMUNITIES 8
920#define BGP_ATTR_ORIGINATOR_ID 9
921#define BGP_ATTR_CLUSTER_LIST 10
922#define BGP_ATTR_DPA 11
923#define BGP_ATTR_ADVERTISER 12
924#define BGP_ATTR_RCID_PATH 13
925#define BGP_ATTR_MP_REACH_NLRI 14
926#define BGP_ATTR_MP_UNREACH_NLRI 15
927#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 928#define BGP_ATTR_AS4_PATH 17
929#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 930#define BGP_ATTR_AS_PATHLIMIT 21
718e3744 931
932/* BGP update origin. */
933#define BGP_ORIGIN_IGP 0
934#define BGP_ORIGIN_EGP 1
935#define BGP_ORIGIN_INCOMPLETE 2
936
937/* BGP notify message codes. */
938#define BGP_NOTIFY_HEADER_ERR 1
939#define BGP_NOTIFY_OPEN_ERR 2
940#define BGP_NOTIFY_UPDATE_ERR 3
941#define BGP_NOTIFY_HOLD_ERR 4
942#define BGP_NOTIFY_FSM_ERR 5
943#define BGP_NOTIFY_CEASE 6
944#define BGP_NOTIFY_CAPABILITY_ERR 7
945#define BGP_NOTIFY_MAX 8
946
4b4e07d2
DT		 947#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
948
718e3744 949/* BGP_NOTIFY_HEADER_ERR sub codes. */
950#define BGP_NOTIFY_HEADER_NOT_SYNC 1
951#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
952#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
953#define BGP_NOTIFY_HEADER_MAX 4
954
955/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 956#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 957#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
958#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
959#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
960#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
961#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
962#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
963#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
964#define BGP_NOTIFY_OPEN_MAX 8
965
966/* BGP_NOTIFY_UPDATE_ERR sub codes. */
967#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
968#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
969#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
970#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
971#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
972#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
973#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
974#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
975#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
976#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
977#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
978#define BGP_NOTIFY_UPDATE_MAX 12
979
4b4e07d2 980/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 981#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
982#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
983#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
984#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
985#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
986#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 987#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
988#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
989#define BGP_NOTIFY_CEASE_MAX 9
718e3744 990
991/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
992#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
993#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
994#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
995#define BGP_NOTIFY_CAPABILITY_MAX 4
996
997/* BGP finite state machine status. */
998#define Idle 1
999#define Connect 2
1000#define Active 3
1001#define OpenSent 4
1002#define OpenConfirm 5
1003#define Established 6
ca058a30
PJ		 1004#define Clearing 7
1005#define Deleted 8
1006#define BGP_STATUS_MAX 9
718e3744 1007
1008/* BGP finite state machine events. */
1009#define BGP_Start 1
1010#define BGP_Stop 2
1011#define TCP_connection_open 3
1012#define TCP_connection_closed 4
1013#define TCP_connection_open_failed 5
1014#define TCP_fatal_error 6
1015#define ConnectRetry_timer_expired 7
1016#define Hold_Timer_expired 8
1017#define KeepAlive_timer_expired 9
1018#define Receive_OPEN_message 10
1019#define Receive_KEEPALIVE_message 11
1020#define Receive_UPDATE_message 12
1021#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 1022#define Clearing_Completed 14
1023#define BGP_EVENTS_MAX 15
718e3744 1024
1025/* BGP timers default value. */
5ca5f1c8 1026#define BGP_INIT_START_TIMER 1
3fd8c527
DW		 1027#define BGP_DEFAULT_HOLDTIME 9
1028#define BGP_DEFAULT_KEEPALIVE 3
12179ba3 1029#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 1030#define BGP_DEFAULT_IBGP_ROUTEADV 0
23a1f277 1031#define BGP_DEFAULT_CONNECT_RETRY 10
718e3744 1032
1033/* BGP default local preference. */
1034#define BGP_DEFAULT_LOCAL_PREF 100
1035
3f9c7369
DS		 1036/* BGP default subgroup packet queue max . */
1037#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1038
538621f2 1039/* BGP graceful restart */
1040#define BGP_DEFAULT_RESTART_TIME 120
1041#define BGP_DEFAULT_STALEPATH_TIME 360
1042
42e6d745
DO		 1043/* RFC4364 */
1044#define SAFI_MPLS_LABELED_VPN 128
718e3744 1045
718e3744 1046/* BGP uptime string length. */
1047#define BGP_UPTIME_LEN 25
1048
1049/* Default configuration settings for bgpd. */
1050#define BGP_VTY_PORT 2605
718e3744 1051#define BGP_DEFAULT_CONFIG "bgpd.conf"
1052
1053/* Check AS path loop when we send NLRI. */
1054/* #define BGP_SEND_ASPATH_CHECK */
1055
f14e6fdb
DS		 1056/* BGP Dynamic Neighbors feature */
1057#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1058#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1059#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1060
718e3744 1061/* Flag for peer_clear_soft(). */
1062enum bgp_clear_type
1063{
1064 BGP_CLEAR_SOFT_NONE,
1065 BGP_CLEAR_SOFT_OUT,
1066 BGP_CLEAR_SOFT_IN,
1067 BGP_CLEAR_SOFT_BOTH,
2a3d5731 1068 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1069};
1070
1071/* Macros. */
1072#define BGP_INPUT(P) ((P)->ibuf)
1073#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
6aa136f1
VS		 1074#define BGP_IS_VALID_STATE_FOR_NOTIF(S)\
1075 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1076
718e3744 1077/* BGP error codes. */
1078#define BGP_SUCCESS 0
1079#define BGP_ERR_INVALID_VALUE -1
1080#define BGP_ERR_INVALID_FLAG -2
1081#define BGP_ERR_INVALID_AS -3
1082#define BGP_ERR_INVALID_BGP -4
1083#define BGP_ERR_PEER_GROUP_MEMBER -5
1084#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
c8560b44
DW		 1085#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -7
1086#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
1087#define BGP_ERR_PEER_GROUP_MISMATCH -9
1088#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
1089#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
1090#define BGP_ERR_AS_MISMATCH -12
1091#define BGP_ERR_PEER_FLAG_CONFLICT -13
1092#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
1093#define BGP_ERR_PEER_FILTER_CONFLICT -15
1094#define BGP_ERR_NOT_INTERNAL_PEER -16
1095#define BGP_ERR_REMOVE_PRIVATE_AS -17
1096#define BGP_ERR_AF_UNCONFIGURED -18
1097#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
1098#define BGP_ERR_INSTANCE_MISMATCH -20
1099#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
1100#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
1101#define BGP_ERR_TCPSIG_FAILED -23
1102#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
1103#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
1104#define BGP_ERR_NO_INTERFACE_CONFIG -26
1105#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
1106#define BGP_ERR_AS_OVERRIDE -28
1107#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1108#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
1109#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1110#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
1111#define BGP_ERR_MAX -33
718e3744 1112
3f9c7369
DS		 1113/*
1114 * Enumeration of different policy kinds a peer can be configured with.
1115 */
1116typedef enum
1117{
1118 BGP_POLICY_ROUTE_MAP,
1119 BGP_POLICY_FILTER_LIST,
1120 BGP_POLICY_PREFIX_LIST,
1121 BGP_POLICY_DISTRIBUTE_LIST,
1122} bgp_policy_type_e;
1123
718e3744 1124extern struct bgp_master *bm;
1125
718e3744 1126/* Prototypes. */
94f2b392 1127extern void bgp_terminate (void);
1128extern void bgp_reset (void);
65957886 1129extern time_t bgp_clock (void);
94f2b392 1130extern void bgp_zclient_reset (void);
1131extern int bgp_nexthop_set (union sockunion *, union sockunion *,
718e3744 1132 struct bgp_nexthop *, struct peer *);
94f2b392 1133extern struct bgp *bgp_get_default (void);
1134extern struct bgp *bgp_lookup (as_t, const char *);
1135extern struct bgp *bgp_lookup_by_name (const char *);
6aeb9e78 1136extern struct bgp *bgp_lookup_by_vrf_id (vrf_id_t);
94f2b392 1137extern struct peer *peer_lookup (struct bgp *, union sockunion *);
a80beece 1138extern struct peer *peer_lookup_by_conf_if (struct bgp *, const char *);
04b6bdc0 1139extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
a80beece 1140extern void bgp_peer_conf_if_to_su_update (struct peer *);
ffd0c037 1141extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
94f2b392 1142extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
1143extern struct peer_group *peer_group_get (struct bgp *, const char *);
f14e6fdb
DS		 1144extern struct peer *peer_create_bind_dynamic_neighbor (struct bgp *,
1145 union sockunion *, struct peer_group *);
1146extern struct prefix *peer_group_lookup_dynamic_neighbor_range (
1147 struct peer_group *, struct prefix *);
1148extern struct peer_group *peer_group_lookup_dynamic_neighbor (struct bgp *,
1149 struct prefix *, struct prefix **);
1150extern struct peer *peer_lookup_dynamic_neighbor (struct bgp *,
1151 union sockunion *);
1152extern void peer_drop_dynamic_neighbor (struct peer *);
28066f4b
DS		 1153
1154/*
1155 * Peers are incredibly easy to memory leak
1156 * due to the various ways that they are actually used
1157 * Provide some functionality to debug locks and unlocks
1158 */
1159extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1160extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1161#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1162#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1163
6d85b15b 1164extern bgp_peer_sort_t peer_sort (struct peer *peer);
94f2b392 1165extern int peer_active (struct peer *);
1166extern int peer_active_nego (struct peer *);
06370dac 1167extern void bgp_recalculate_all_bestpaths (struct bgp *bgp);
a80beece 1168extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
0299c004 1169 as_t, as_t, int, afi_t, safi_t);
94f2b392 1170extern struct peer *peer_create_accept (struct bgp *);
1ff9a340 1171extern void peer_xfer_config (struct peer *dst, struct peer *src);
856ca177
MS		 1172extern char *peer_uptime (time_t, char *, size_t, u_char, json_object *);
1173
94f2b392 1174extern int bgp_config_write (struct vty *);
1175extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
6b0655a2 1176
ad4cbda1 1177extern void bgp_if_finish (void);
94f2b392 1178extern void bgp_master_init (void);
718e3744 1179
94f2b392 1180extern void bgp_init (void);
1181extern void bgp_route_map_init (void);
4c48cf63 1182extern void bgp_session_reset (struct peer *);
718e3744 1183
94f2b392 1184extern int bgp_option_set (int);
1185extern int bgp_option_unset (int);
1186extern int bgp_option_check (int);
718e3744 1187
ad4cbda1 1188extern int bgp_get (struct bgp **, as_t *, const char *, enum bgp_instance_type);
6aeb9e78
DS		 1189extern void bgp_instance_up (struct bgp *);
1190extern void bgp_instance_down (struct bgp *);
94f2b392 1191extern int bgp_delete (struct bgp *);
718e3744 1192
94f2b392 1193extern int bgp_flag_set (struct bgp *, int);
1194extern int bgp_flag_unset (struct bgp *, int);
1195extern int bgp_flag_check (struct bgp *, int);
718e3744 1196
0088b5dc
SH		 1197extern void bgp_lock (struct bgp *);
1198extern void bgp_unlock (struct bgp *);
1199
94f2b392 1200extern int bgp_router_id_set (struct bgp *, struct in_addr *);
718e3744 1201
94f2b392 1202extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
1203extern int bgp_cluster_id_unset (struct bgp *);
718e3744 1204
94f2b392 1205extern int bgp_confederation_id_set (struct bgp *, as_t);
1206extern int bgp_confederation_id_unset (struct bgp *);
1207extern int bgp_confederation_peers_check (struct bgp *, as_t);
718e3744 1208
94f2b392 1209extern int bgp_confederation_peers_add (struct bgp *, as_t);
1210extern int bgp_confederation_peers_remove (struct bgp *, as_t);
718e3744 1211
94f2b392 1212extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
1213extern int bgp_timers_unset (struct bgp *);
718e3744 1214
94f2b392 1215extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
1216extern int bgp_default_local_preference_unset (struct bgp *);
718e3744 1217
3f9c7369
DS		 1218extern int bgp_default_subgroup_pkt_queue_max_set (struct bgp *bgp, u_int32_t);
1219extern int bgp_default_subgroup_pkt_queue_max_unset (struct bgp *bgp);
1220
f14e6fdb
DS		 1221extern int bgp_listen_limit_set (struct bgp *, int);
1222extern int bgp_listen_limit_unset (struct bgp *);
1223
f188f2c4
DS		 1224extern int bgp_update_delay_active (struct bgp *);
1225extern int bgp_update_delay_configured (struct bgp *);
0299c004 1226extern void peer_as_change (struct peer *, as_t, int);
a80beece 1227extern int peer_remote_as (struct bgp *, union sockunion *,const char *, as_t *,
0299c004
DS		 1228 int, afi_t, safi_t);
1229extern int peer_group_remote_as (struct bgp *, const char *, as_t *, int);
94f2b392 1230extern int peer_delete (struct peer *peer);
1231extern int peer_group_delete (struct peer_group *);
1232extern int peer_group_remote_as_delete (struct peer_group *);
f14e6fdb 1233extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1234
94f2b392 1235extern int peer_activate (struct peer *, afi_t, safi_t);
1236extern int peer_deactivate (struct peer *, afi_t, safi_t);
718e3744 1237
a80beece 1238extern int peer_group_bind (struct bgp *, union sockunion *, struct peer *,
c8560b44
DW		 1239 struct peer_group *, as_t *);
1240extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *);
718e3744 1241
94f2b392 1242extern int peer_flag_set (struct peer *, u_int32_t);
1243extern int peer_flag_unset (struct peer *, u_int32_t);
718e3744 1244
94f2b392 1245extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
1246extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
1247extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1248
94f2b392 1249extern int peer_ebgp_multihop_set (struct peer *, int);
1250extern int peer_ebgp_multihop_unset (struct peer *);
c43ed2e4 1251extern int is_ebgp_multihop_configured (struct peer *peer);
718e3744 1252
94f2b392 1253extern int peer_description_set (struct peer *, char *);
1254extern int peer_description_unset (struct peer *);
718e3744 1255
94f2b392 1256extern int peer_update_source_if_set (struct peer *, const char *);
1257extern int peer_update_source_addr_set (struct peer *, union sockunion *);
1258extern int peer_update_source_unset (struct peer *);
718e3744 1259
94f2b392 1260extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
1261extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
718e3744 1262
94f2b392 1263extern int peer_port_set (struct peer *, u_int16_t);
1264extern int peer_port_unset (struct peer *);
718e3744 1265
ffd0c037
DS		 1266extern void peer_weight_set (struct peer *, u_int16_t);
1267extern void peer_weight_unset (struct peer *);
718e3744 1268
94f2b392 1269extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
1270extern int peer_timers_unset (struct peer *);
718e3744 1271
94f2b392 1272extern int peer_timers_connect_set (struct peer *, u_int32_t);
1273extern int peer_timers_connect_unset (struct peer *);
718e3744 1274
94f2b392 1275extern int peer_advertise_interval_set (struct peer *, u_int32_t);
1276extern int peer_advertise_interval_unset (struct peer *);
718e3744 1277
ffd0c037
DS		 1278extern void peer_interface_set (struct peer *, const char *);
1279extern void peer_interface_unset (struct peer *);
718e3744 1280
94f2b392 1281extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
1282extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
718e3744 1283
94f2b392 1284extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
1285extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
718e3744 1286
9d3f9705 1287extern int peer_local_as_set (struct peer *, as_t, int, int);
94f2b392 1288extern int peer_local_as_unset (struct peer *);
718e3744 1289
94f2b392 1290extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
1291extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
718e3744 1292
94f2b392 1293extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
1294extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
718e3744 1295
94f2b392 1296extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
1297extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
718e3744 1298
94f2b392 1299extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
0df7c91f
PJ		 1300
1301extern int peer_password_set (struct peer *, const char *);
1302extern int peer_password_unset (struct peer *);
1303
94f2b392 1304extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
718e3744 1305
94f2b392 1306extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
1307extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
718e3744 1308
1ff9a340 1309extern int peer_clear (struct peer *, struct listnode **);
94f2b392 1310extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1311
fa411a21
NH		 1312extern int peer_ttl_security_hops_set (struct peer *, int);
1313extern int peer_ttl_security_hops_unset (struct peer *);
1314
518f0eb1
DS		 1315extern int bgp_route_map_update_timer (struct thread *thread);
1316extern void bgp_route_map_terminate(void);
16286195
DS		 1317
1318extern int peer_cmp (struct peer *p1, struct peer *p2);
3f9c7369
DS		 1319
1320extern struct peer_af * peer_af_create (struct peer *, afi_t, safi_t);
1321extern struct peer_af * peer_af_find (struct peer *, afi_t, safi_t);
1322extern int peer_af_delete (struct peer *, afi_t, safi_t);
1323
ffd0c037
DS		 1324extern void bgp_close(void);
1325
3f9c7369
DS		 1326static inline int
1327afindex (afi_t afi, safi_t safi)
1328{
1329 switch (afi)
1330 {
1331 case AFI_IP:
1332 switch (safi)
1333 {
1334 case SAFI_UNICAST:
1335 return BGP_AF_IPV4_UNICAST;
1336 break;
1337 case SAFI_MULTICAST:
1338 return BGP_AF_IPV4_MULTICAST;
1339 break;
1340 case SAFI_MPLS_VPN:
1341 return BGP_AF_IPV4_VPN;
1342 break;
1343 default:
1344 return BGP_AF_MAX;
1345 break;
1346 }
1347 break;
1348 case AFI_IP6:
1349 switch (safi)
1350 {
1351 case SAFI_UNICAST:
1352 return BGP_AF_IPV6_UNICAST;
1353 break;
1354 case SAFI_MULTICAST:
1355 return BGP_AF_IPV6_MULTICAST;
1356 break;
1357 default:
1358 return BGP_AF_MAX;
1359 break;
1360 }
1361 break;
1362 default:
1363 return BGP_AF_MAX;
1364 break;
1365 }
1366}
1367
c8560b44 1368/* If the peer is not a peer-group but is bound to a peer-group return 1 */
3f9c7369
DS		 1369static inline int
1370peer_group_active (struct peer *peer)
1371{
c8560b44 1372 if (!CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP) && peer->group)
3f9c7369
DS		 1373 return 1;
1374 return 0;
1375}
1376
1377/* If peer is negotiated at least one address family return 1. */
1378static inline int
1379peer_afi_active_nego (const struct peer *peer, afi_t afi)
1380{
1381 if (peer->afc_nego[afi][SAFI_UNICAST]
1382 || peer->afc_nego[afi][SAFI_MULTICAST]
1383 || peer->afc_nego[afi][SAFI_MPLS_VPN])
1384 return 1;
1385 return 0;
1386}
1387
f14e6fdb
DS		 1388/* If at least one address family activated for group, return 1. */
1389static inline int
1390peer_group_af_configured (struct peer_group *group)
1391{
1392 struct peer *peer = group->conf;
1393
1394 if (peer->afc[AFI_IP][SAFI_UNICAST]
1395 || peer->afc[AFI_IP][SAFI_MULTICAST]
1396 || peer->afc[AFI_IP][SAFI_MPLS_VPN]
1397 || peer->afc[AFI_IP6][SAFI_UNICAST]
1398 || peer->afc[AFI_IP6][SAFI_MULTICAST])
1399 return 1;
1400 return 0;
1401}
1402
3f9c7369
DS		 1403static inline char *
1404timestamp_string (time_t ts)
1405{
1406#ifdef HAVE_CLOCK_MONOTONIC
1407 time_t tbuf;
1408 tbuf = time(NULL) - (bgp_clock() - ts);
1409 return ctime(&tbuf);
1410#else
1411 return ctime(&ts);
1412#endif /* HAVE_CLOCK_MONOTONIC */
1413}
1414
1415static inline int
1416peer_established (struct peer *peer)
1417{
1418 if (peer->status == Established)
1419 return 1;
1420 return 0;
1421}
1422
f14e6fdb
DS		 1423static inline int
1424peer_dynamic_neighbor (struct peer *peer)
1425{
1426 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
1427}
1428
8a92a8a0
DS		 1429/*
1430 * Currently supporting RFC 5549 for AFI_IP/SAFI_UNICAST only.
1431 *
1432 * Note: When other RFC-5549 applicable SAFIs to be supported, that should
1433 * come as an argument to this routine.
1434 */
1435static inline int
1436peer_cap_enhe (struct peer *peer)
1437{
1438 return (CHECK_FLAG(peer->af_cap[AFI_IP][SAFI_UNICAST], PEER_CAP_ENHE_AF_NEGO));
1439}
1440
00d252cb 1441#endif /* _QUAGGA_BGPD_H */
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