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Merge branch 'cmaster' of ssh://stash.cumulusnetworks.com:7999/quag/quagga into cmaster
[mirror_frr.git] / bgpd / bgpd.h
CommitLineData
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"
718e3744 25/* For union sockunion. */
3f9c7369 26#include "queue.h"
718e3744 27#include "sockunion.h"
518f0eb1 28#include "routemap.h"
ffd0c037 29#include "linklist.h"
718e3744 30
04b6bdc0
DW		 31#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
32
3f9c7369
DS		 33struct update_subgroup;
34struct bpacket;
35
0299c004
DS		 36/*
37 * Allow the neighbor XXXX remote-as to take internal or external
38 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement behavior
39 * in the system.
40 */
41enum {
42 AS_UNSPECIFIED = 0,
43 AS_SPECIFIED,
44 AS_INTERNAL,
45 AS_EXTERNAL,
46};
47
718e3744 48/* Typedef BGP specific types. */
0b2aa3a0
PJ		 49typedef u_int32_t as_t;
50typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
718e3744 51typedef u_int16_t bgp_size_t;
52
3f9c7369
DS		 53#define max(a,b) \
54 ({ __typeof__ (a) _a = (a); \
55 __typeof__ (b) _b = (b); \
56 _a > _b ? _a : _b; })
57
58enum bgp_af_index
59{
60 BGP_AF_START,
61 BGP_AF_IPV4_UNICAST = BGP_AF_START,
62 BGP_AF_IPV4_MULTICAST,
63 BGP_AF_IPV4_VPN,
64 BGP_AF_IPV6_UNICAST,
65 BGP_AF_IPV6_MULTICAST,
66 BGP_AF_MAX
67};
68
69#define AF_FOREACH(af) \
70 for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
71
72#define FOREACH_AFI_SAFI(afi, safi) \
73 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
74 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
75
718e3744 76/* BGP master for system wide configurations and variables. */
77struct bgp_master
78{
79 /* BGP instance list. */
80 struct list *bgp;
81
87d4a781
DS		 82 /* BGP thread master. */
83 struct thread_master *master;
84
200df115 85 /* work queues */
86 struct work_queue *process_main_queue;
200df115 87
0df7c91f
PJ		 88 /* Listening sockets */
89 struct list *listen_sockets;
90
718e3744 91 /* BGP port number. */
92 u_int16_t port;
93
3a02d1f7
PJ		 94 /* Listener address */
95 char *address;
96
718e3744 97 /* BGP start time. */
98 time_t start_time;
99
100 /* Various BGP global configuration. */
101 u_char options;
102#define BGP_OPT_NO_FIB (1 << 0)
103#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
104#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 105#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369
DS		 106
107 u_int64_t updgrp_idspace;
108 u_int64_t subgrp_idspace;
718e3744 109};
110
73ac8160
DS		 111/* BGP route-map structure. */
112struct bgp_rmap
113{
114 char *name;
115 struct route_map *map;
116};
117
7c8ff89e
DS		 118struct bgp_redist
119{
120 u_short instance;
121
122 /* BGP redistribute metric configuration. */
123 u_char redist_metric_flag;
124 u_int32_t redist_metric;
125
126 /* BGP redistribute route-map. */
127 struct bgp_rmap rmap;
128};
129
718e3744 130/* BGP instance structure. */
131struct bgp
132{
133 /* AS number of this BGP instance. */
134 as_t as;
135
136 /* Name of this BGP instance. */
137 char *name;
200df115 138
0088b5dc
SH		 139 /* Reference count to allow peer_delete to finish after bgp_delete */
140 int lock;
141
718e3744 142 /* Self peer. */
143 struct peer *peer_self;
144
145 /* BGP peer. */
146 struct list *peer;
dd793e4a 147 struct hash *peerhash;
718e3744 148
149 /* BGP peer group. */
150 struct list *group;
151
f14e6fdb
DS		 152 /* The maximum number of BGP dynamic neighbors that can be created */
153 int dynamic_neighbors_limit;
154
155 /* The current number of BGP dynamic neighbors */
156 int dynamic_neighbors_count;
157
3f9c7369
DS		 158 struct hash *update_groups[BGP_AF_MAX];
159
160 /*
161 * Global statistics for update groups.
162 */
163 struct {
164 u_int32_t join_events;
165 u_int32_t prune_events;
166 u_int32_t merge_events;
167 u_int32_t split_events;
168 u_int32_t updgrp_switch_events;
169 u_int32_t peer_refreshes_combined;
170 u_int32_t adj_count;
171 u_int32_t merge_checks_triggered;
172
173 u_int32_t updgrps_created;
174 u_int32_t updgrps_deleted;
175 u_int32_t subgrps_created;
176 u_int32_t subgrps_deleted;
177 } update_group_stats;
178
718e3744 179 /* BGP configuration. */
180 u_int16_t config;
181#define BGP_CONFIG_ROUTER_ID (1 << 0)
182#define BGP_CONFIG_CLUSTER_ID (1 << 1)
183#define BGP_CONFIG_CONFEDERATION (1 << 2)
718e3744 184
185 /* BGP router identifier. */
186 struct in_addr router_id;
18a6dce6 187 struct in_addr router_id_static;
718e3744 188
189 /* BGP route reflector cluster ID. */
190 struct in_addr cluster_id;
191
192 /* BGP confederation information. */
193 as_t confed_id;
194 as_t *confed_peers;
195 int confed_peers_cnt;
196
abc920f8
DS		 197 struct thread *t_startup; /* start-up timer on only once at the beginning */
198
199 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
200#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
201 u_int32_t maxmed_onstartup_value; /* Max-med value when active on start-up */
202 struct thread *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
203 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
204
205 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
206#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
207 u_int32_t maxmed_admin_value; /* Max-med value when administrative in on */
208#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
209
210 u_char maxmed_active; /* 1/0 if max-med is active or not */
211 u_int32_t maxmed_value; /* Max-med value when its active */
fe7d2a48 212
f188f2c4
DS		 213 /* BGP update delay on startup */
214 struct thread *t_update_delay;
215 struct thread *t_establish_wait;
216 u_char update_delay_over;
4a16ae86
DS		 217 u_char main_zebra_update_hold;
218 u_char main_peers_update_hold;
f188f2c4
DS		 219 u_int16_t v_update_delay;
220 u_int16_t v_establish_wait;
221 char update_delay_begin_time[64];
222 char update_delay_end_time[64];
4a16ae86
DS		 223 char update_delay_zebra_resume_time[64];
224 char update_delay_peers_resume_time[64];
f188f2c4
DS		 225 u_int32_t established;
226 u_int32_t restarted_peers;
227 u_int32_t implicit_eors;
228 u_int32_t explicit_eors;
229#define BGP_UPDATE_DELAY_DEF 0
230#define BGP_UPDATE_DELAY_MIN 0
231#define BGP_UPDATE_DELAY_MAX 3600
232
718e3744 233 /* BGP flags. */
8bd9d948 234 u_int32_t flags;
718e3744 235#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
236#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
237#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
238#define BGP_FLAG_MED_CONFED (1 << 3)
239#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
240#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
241#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
242#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
243#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
244#define BGP_FLAG_IMPORT_CHECK (1 << 9)
245#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 246#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 247#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 248#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 249#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 250#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 251#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
219178b6 252#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
078430f6 253#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
5623e905 254#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
718e3744 255
256 /* BGP Per AF flags */
257 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
258#define BGP_CONFIG_DAMPENING (1 << 0)
259
260 /* Static route configuration. */
261 struct bgp_table *route[AFI_MAX][SAFI_MAX];
262
263 /* Aggregate address configuration. */
264 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
265
266 /* BGP routing information base. */
267 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
268
73ac8160
DS		 269 /* BGP table route-map. */
270 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
271
718e3744 272 /* BGP redistribute configuration. */
7c8ff89e 273 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 274
518f0eb1
DS		 275 /* timer to dampen route map changes */
276 struct thread *t_rmap_update; /* Handle route map updates */
277 u_int32_t rmap_update_timer; /* Route map update timer */
278#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
279
0de4848d
DS		 280 /* timer to re-evaluate neighbor default-originate route-maps */
281 struct thread *t_rmap_def_originate_eval;
282#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
283
718e3744 284 /* BGP distance configuration. */
285 u_char distance_ebgp;
286 u_char distance_ibgp;
287 u_char distance_local;
288
289 /* BGP default local-preference. */
290 u_int32_t default_local_pref;
291
3f9c7369
DS		 292 /* BGP default subgroup pkt queue max */
293 u_int32_t default_subgroup_pkt_queue_max;
294
718e3744 295 /* BGP default timer. */
296 u_int32_t default_holdtime;
297 u_int32_t default_keepalive;
538621f2 298
299 /* BGP graceful restart */
93406d87 300 u_int32_t restart_time;
301 u_int32_t stalepath_time;
165b5fff
JB		 302
303 /* Maximum-paths configuration */
304 struct bgp_maxpaths_cfg {
305 u_int16_t maxpaths_ebgp;
306 u_int16_t maxpaths_ibgp;
5e242b0d
DS		 307 u_int16_t ibgp_flags;
308#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
165b5fff 309 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9
DS		 310
311 u_int32_t wpkt_quanta; /* per peer packet quanta to write */
3f9c7369 312 u_int32_t coalesce_time;
adbac85e
DW		 313
314 u_int32_t addpath_tx_id;
315 int addpath_tx_used[AFI_MAX][SAFI_MAX];
718e3744 316};
317
2a3d5731 318#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
d889623f 319
718e3744 320/* BGP peer-group support. */
321struct peer_group
322{
323 /* Name of the peer-group. */
324 char *name;
325
326 /* Pointer to BGP. */
327 struct bgp *bgp;
328
329 /* Peer-group client list. */
330 struct list *peer;
331
f14e6fdb
DS		 332 /** Dynamic neighbor listening ranges */
333 struct list *listen_range[AFI_MAX];
334
718e3744 335 /* Peer-group config */
336 struct peer *conf;
337};
338
339/* BGP Notify message format. */
340struct bgp_notify
341{
342 u_char code;
343 u_char subcode;
344 char *data;
345 bgp_size_t length;
346};
347
348/* Next hop self address. */
349struct bgp_nexthop
350{
351 struct interface *ifp;
352 struct in_addr v4;
353#ifdef HAVE_IPV6
354 struct in6_addr v6_global;
355 struct in6_addr v6_local;
356#endif /* HAVE_IPV6 */
357};
358
a82478b9
DS		 359/* BGP addpath values */
360#define BGP_ADDPATH_RX 1
361#define BGP_ADDPATH_TX 2
362#define BGP_ADDPATH_ID_LEN 4
363
adbac85e
DW		 364#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
365
718e3744 366/* BGP router distinguisher value. */
367#define BGP_RD_SIZE 8
368
369struct bgp_rd
370{
371 u_char val[BGP_RD_SIZE];
372};
373
2a3d5731
DW		 374#define RMAP_IN 0
375#define RMAP_OUT 1
376#define RMAP_MAX 2
fee0f4c6 377
718e3744 378/* BGP filter structure. */
379struct bgp_filter
380{
381 /* Distribute-list. */
382 struct
383 {
384 char *name;
385 struct access_list *alist;
386 } dlist[FILTER_MAX];
387
388 /* Prefix-list. */
389 struct
390 {
391 char *name;
392 struct prefix_list *plist;
393 } plist[FILTER_MAX];
394
395 /* Filter-list. */
396 struct
397 {
398 char *name;
399 struct as_list *aslist;
400 } aslist[FILTER_MAX];
401
402 /* Route-map. */
403 struct
404 {
405 char *name;
406 struct route_map *map;
fee0f4c6 407 } map[RMAP_MAX];
718e3744 408
409 /* Unsuppress-map. */
410 struct
411 {
412 char *name;
413 struct route_map *map;
414 } usmap;
415};
416
6d85b15b
JBD		 417/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
418 a peer who's AS is part of our Confederation. */
419typedef enum
420{
421 BGP_PEER_IBGP = 1,
422 BGP_PEER_EBGP,
423 BGP_PEER_INTERNAL,
424 BGP_PEER_CONFED,
425} bgp_peer_sort_t;
426
d6661008
DS		 427/* BGP message header and packet size. */
428#define BGP_MARKER_SIZE 16
429#define BGP_HEADER_SIZE 19
430#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 431#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 432
3f9c7369
DS		 433/*
434 * Trigger delay for bgp_announce_route().
435 */
436#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
437#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
438
439struct peer_af
440{
441 /* back pointer to the peer */
442 struct peer *peer;
443
444 /* which subgroup the peer_af belongs to */
445 struct update_subgroup *subgroup;
446
447 /* for being part of an update subgroup's peer list */
448 LIST_ENTRY(peer_af) subgrp_train;
449
450 /* for being part of a packet's peer list */
451 LIST_ENTRY(peer_af) pkt_train;
452
453 struct bpacket *next_pkt_to_send;
454
455 /*
456 * Trigger timer for bgp_announce_route().
457 */
458 struct thread *t_announce_route;
459
460 afi_t afi;
461 safi_t safi;
462 int afid;
463};
464
718e3744 465/* BGP neighbor structure. */
466struct peer
467{
468 /* BGP structure. */
469 struct bgp *bgp;
470
200df115 471 /* reference count, primarily to allow bgp_process'ing of route_node's
472 * to be done after a struct peer is deleted.
473 *
474 * named 'lock' for hysterical reasons within Quagga.
475 */
476 int lock;
477
718e3744 478 /* BGP peer group. */
479 struct peer_group *group;
480 u_char af_group[AFI_MAX][SAFI_MAX];
3f9c7369
DS		 481 u_int64_t version[AFI_MAX][SAFI_MAX];
482
483 /* BGP peer_af structures, per configured AF on this peer */
484 struct peer_af *peer_af_array[BGP_AF_MAX];
718e3744 485
486 /* Peer's remote AS number. */
0299c004
DS		 487 int as_type;
488 as_t as;
718e3744 489
490 /* Peer's local AS number. */
491 as_t local_as;
492
6d85b15b
JBD		 493 bgp_peer_sort_t sort;
494
718e3744 495 /* Peer's Change local AS number. */
496 as_t change_local_as;
497
498 /* Remote router ID. */
499 struct in_addr remote_id;
500
501 /* Local router ID. */
502 struct in_addr local_id;
503
504 /* Packet receive and send buffer. */
505 struct stream *ibuf;
506 struct stream_fifo *obuf;
507 struct stream *work;
508
8c71e481
PM		 509 /* We use a separate stream to encode MP_REACH_NLRI for efficient
510 * NLRI packing. peer->work stores all the other attributes. The
511 * actual packet is then constructed by concatenating the two.
512 */
513 struct stream *scratch;
514
1ff9a340
DS		 515 /* the doppelganger peer structure, due to dual TCP conn setup */
516 struct peer *doppelganger;
517
718e3744 518 /* Status of the peer. */
519 int status;
520 int ostatus;
521
6403814c
DS		 522 /* FSM events, stored for debug purposes.
523 * Note: uchar used for reduced memory usage.
524 */
525 unsigned char cur_event;
526 unsigned char last_event;
527 unsigned char last_major_event;
528
0b2aa3a0
PJ		 529 /* Peer index, used for dumping TABLE_DUMP_V2 format */
530 uint16_t table_dump_index;
531
718e3744 532 /* Peer information */
eb821189 533 int fd; /* File descriptor */
534 int ttl; /* TTL of TCP connection to the peer. */
fa411a21 535 int gtsm_hops; /* minimum hopcount to peer */
eb821189 536 char *desc; /* Description of the peer. */
537 unsigned short port; /* Destination port for peer */
538 char *host; /* Printable address of the peer. */
539 union sockunion su; /* Sockunion address of the peer. */
a80beece 540#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
eb821189 541 time_t uptime; /* Last Up/Down time */
542 time_t readtime; /* Last read time */
543 time_t resettime; /* Last reset time */
718e3744 544
eb821189 545 unsigned int ifindex; /* ifindex of the BGP connection. */
a80beece 546 char *conf_if; /* neighbor interface config name. */
eb821189 547 char *ifname; /* bind interface name. */
548 char *update_if;
549 union sockunion *update_source;
eb821189 550
551 union sockunion *su_local; /* Sockunion of local address. */
552 union sockunion *su_remote; /* Sockunion of remote address. */
553 int shared_network; /* Is this peer shared same network. */
554 struct bgp_nexthop nexthop; /* Nexthop */
718e3744 555
556 /* Peer address family configuration. */
557 u_char afc[AFI_MAX][SAFI_MAX];
558 u_char afc_nego[AFI_MAX][SAFI_MAX];
559 u_char afc_adv[AFI_MAX][SAFI_MAX];
560 u_char afc_recv[AFI_MAX][SAFI_MAX];
561
0a486e5f 562 /* Capability flags (reset in bgp_stop) */
6410e93a 563 u_int32_t cap;
718e3744 564#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
565#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
566#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
567#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
568#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 569#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
570#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 571#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
572#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 573#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
574#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 575#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
576#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 577#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
578#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
04b6bdc0
DW		 579#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
580#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
718e3744 581
0a486e5f 582 /* Capability flags (reset in bgp_stop) */
04b6bdc0 583 u_int32_t af_cap[AFI_MAX][SAFI_MAX];
718e3744 584#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
585#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
586#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
587#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
588#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
589#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 590#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
591#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 592#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
593#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
594#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
595#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 596#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
597#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
598#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 599
600 /* Global configuration flags. */
601 u_int32_t flags;
602#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
603#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
604#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
605#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
606#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 607#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 608#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 609#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 610#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 611#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
612#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
7f342629
DS		 613#define PEER_FLAG_LONESOUL (1 << 11)
614#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
615#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
88177fe3 616#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
718e3744 617
93406d87 618 /* NSF mode (graceful restart) */
619 u_char nsf[AFI_MAX][SAFI_MAX];
620
718e3744 621 /* Per AF configuration flags. */
622 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
623#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
624#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
625#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
626#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
627#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
628#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
629#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
630#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
631#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
632#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
633#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
634#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
635#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
636#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
637#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
638#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 639#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
a538debe 640#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
5000f21c
DS		 641#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
642#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 643#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
88b8ed8d 644#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
adbac85e 645#define PEER_FLAG_ADDPATH_TX_ALL_PATHS (1 << 22) /* addpath-tx-all-paths */
06370dac 646#define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
0df7c91f
PJ		 647
648 /* MD5 password */
649 char *password;
718e3744 650
651 /* default-originate route-map. */
652 struct
653 {
654 char *name;
655 struct route_map *map;
656 } default_rmap[AFI_MAX][SAFI_MAX];
657
658 /* Peer status flags. */
659 u_int16_t sflags;
660#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
661#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
662#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
663#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
664#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 665#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
666#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 667
0a486e5f 668 /* Peer status af flags (reset in bgp_stop) */
718e3744 669 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
670#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
671#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 672#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
673#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
674#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
675#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 676
718e3744 677 /* Default attribute value for the peer. */
678 u_int32_t config;
679#define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
680#define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
681#define PEER_CONFIG_CONNECT (1 << 2) /* connect */
682#define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
8ffedcea 683
718e3744 684 u_int32_t weight;
685 u_int32_t holdtime;
686 u_int32_t keepalive;
687 u_int32_t connect;
688 u_int32_t routeadv;
689
690 /* Timer values. */
691 u_int32_t v_start;
692 u_int32_t v_connect;
693 u_int32_t v_holdtime;
694 u_int32_t v_keepalive;
718e3744 695 u_int32_t v_routeadv;
0a486e5f 696 u_int32_t v_pmax_restart;
93406d87 697 u_int32_t v_gr_restart;
718e3744 698
699 /* Threads. */
700 struct thread *t_read;
701 struct thread *t_write;
702 struct thread *t_start;
703 struct thread *t_connect;
704 struct thread *t_holdtime;
705 struct thread *t_keepalive;
718e3744 706 struct thread *t_routeadv;
0a486e5f 707 struct thread *t_pmax_restart;
93406d87 708 struct thread *t_gr_restart;
709 struct thread *t_gr_stale;
64e580a7
PJ		 710
711 /* workqueues */
712 struct work_queue *clear_node_queue;
713
718e3744 714 /* Statistics field */
715 u_int32_t open_in; /* Open message input count */
716 u_int32_t open_out; /* Open message output count */
717 u_int32_t update_in; /* Update message input count */
718 u_int32_t update_out; /* Update message ouput count */
719 time_t update_time; /* Update message received time. */
720 u_int32_t keepalive_in; /* Keepalive input count */
721 u_int32_t keepalive_out; /* Keepalive output count */
722 u_int32_t notify_in; /* Notify input count */
723 u_int32_t notify_out; /* Notify output count */
724 u_int32_t refresh_in; /* Route Refresh input count */
725 u_int32_t refresh_out; /* Route Refresh output count */
726 u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
727 u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
728
729 /* BGP state count */
730 u_int32_t established; /* Established */
731 u_int32_t dropped; /* Dropped */
732
f188f2c4
DS		 733 /* Update delay related fields */
734 u_char update_delay_over; /* When this is set, BGP is no more waiting for EOR */
735
718e3744 736 /* Syncronization list and time. */
737 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
738 time_t synctime;
cb1faec9 739 time_t last_write; /* timestamp when the last UPDATE msg was written */
718e3744 740
741 /* Send prefix count. */
742 unsigned long scount[AFI_MAX][SAFI_MAX];
743
744 /* Announcement attribute hash. */
745 struct hash *hash[AFI_MAX][SAFI_MAX];
746
747 /* Notify data. */
748 struct bgp_notify notify;
749
750 /* Whole packet size to be read. */
751 unsigned long packet_size;
752
753 /* Filter structure. */
754 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
755
756 /* ORF Prefix-list */
757 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
758
16286195
DS		 759 /* Text description of last attribute rcvd */
760 char rcvd_attr_str[BUFSIZ];
761
762 /* Track if we printed the attribute in debugs */
763 int rcvd_attr_printed;
764
718e3744 765 /* Prefix count. */
766 unsigned long pcount[AFI_MAX][SAFI_MAX];
767
768 /* Max prefix count. */
769 unsigned long pmax[AFI_MAX][SAFI_MAX];
e0701b79 770 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
0a486e5f 771 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 772#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 773
774 /* allowas-in. */
775 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 776
e0701b79 777 /* peer reset cause */
778 char last_reset;
779#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
780#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
781#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
782#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
783#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
784#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
785#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
786#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
787#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
788#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
789#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
790#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
791#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
792#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
793#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
794#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
795#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
796#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
797#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
798#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
799#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 800#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 801#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 802#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
d6661008
DS		 803unsigned long last_reset_cause_size;
804u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 805
ac41b2a2 806 /* The kind of route-map Flags.*/
807 u_char rmap_type;
808#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
809#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
810#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
811#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
812#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
813#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 814#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
815#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 816
c43ed2e4 817 /* peer specific BFD information */
88177fe3 818 struct bfd_info *bfd_info;
04b6bdc0
DW		 819
820 /* hostname and domainname advertised by host */
821 char *hostname;
822 char *domainname;
718e3744 823};
824
0df7c91f
PJ		 825#define PEER_PASSWORD_MINLEN (1)
826#define PEER_PASSWORD_MAXLEN (80)
827
718e3744 828/* This structure's member directly points incoming packet data
829 stream. */
830struct bgp_nlri
831{
832 /* AFI. */
833 afi_t afi;
834
835 /* SAFI. */
836 safi_t safi;
837
838 /* Pointer to NLRI byte stream. */
839 u_char *nlri;
840
841 /* Length of whole NLRI. */
842 bgp_size_t length;
843};
844
3f9c7369
DS		 845#define PEERAF_FOREACH(peer, paf, afi) \
846 for ((afi) = BGP_AF_START, (paf) = (peer)->peer_af_array[(afi)]; \
847 (afi) < BGP_AF_MAX; \
848 (afi)++, (paf) = (peer)->peer_af_array[(afi)]) \
849 if ((paf) != NULL) \
850
718e3744 851/* BGP versions. */
852#define BGP_VERSION_4 4
718e3744 853
854/* Default BGP port number. */
855#define BGP_PORT_DEFAULT 179
856
718e3744 857/* BGP minimum message size. */
858#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
859#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
860#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
861#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
862#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
863#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
864
865/* BGP message types. */
866#define BGP_MSG_OPEN 1
867#define BGP_MSG_UPDATE 2
868#define BGP_MSG_NOTIFY 3
869#define BGP_MSG_KEEPALIVE 4
870#define BGP_MSG_ROUTE_REFRESH_NEW 5
871#define BGP_MSG_CAPABILITY 6
872#define BGP_MSG_ROUTE_REFRESH_OLD 128
873
874/* BGP open optional parameter. */
875#define BGP_OPEN_OPT_AUTH 1
876#define BGP_OPEN_OPT_CAP 2
877
878/* BGP4 attribute type codes. */
879#define BGP_ATTR_ORIGIN 1
880#define BGP_ATTR_AS_PATH 2
881#define BGP_ATTR_NEXT_HOP 3
882#define BGP_ATTR_MULTI_EXIT_DISC 4
883#define BGP_ATTR_LOCAL_PREF 5
884#define BGP_ATTR_ATOMIC_AGGREGATE 6
885#define BGP_ATTR_AGGREGATOR 7
886#define BGP_ATTR_COMMUNITIES 8
887#define BGP_ATTR_ORIGINATOR_ID 9
888#define BGP_ATTR_CLUSTER_LIST 10
889#define BGP_ATTR_DPA 11
890#define BGP_ATTR_ADVERTISER 12
891#define BGP_ATTR_RCID_PATH 13
892#define BGP_ATTR_MP_REACH_NLRI 14
893#define BGP_ATTR_MP_UNREACH_NLRI 15
894#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 895#define BGP_ATTR_AS4_PATH 17
896#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 897#define BGP_ATTR_AS_PATHLIMIT 21
718e3744 898
899/* BGP update origin. */
900#define BGP_ORIGIN_IGP 0
901#define BGP_ORIGIN_EGP 1
902#define BGP_ORIGIN_INCOMPLETE 2
903
904/* BGP notify message codes. */
905#define BGP_NOTIFY_HEADER_ERR 1
906#define BGP_NOTIFY_OPEN_ERR 2
907#define BGP_NOTIFY_UPDATE_ERR 3
908#define BGP_NOTIFY_HOLD_ERR 4
909#define BGP_NOTIFY_FSM_ERR 5
910#define BGP_NOTIFY_CEASE 6
911#define BGP_NOTIFY_CAPABILITY_ERR 7
912#define BGP_NOTIFY_MAX 8
913
4b4e07d2
DT		 914#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
915
718e3744 916/* BGP_NOTIFY_HEADER_ERR sub codes. */
917#define BGP_NOTIFY_HEADER_NOT_SYNC 1
918#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
919#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
920#define BGP_NOTIFY_HEADER_MAX 4
921
922/* BGP_NOTIFY_OPEN_ERR sub codes. */
14051b36 923#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
718e3744 924#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
925#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
926#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
927#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
928#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
929#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
930#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
931#define BGP_NOTIFY_OPEN_MAX 8
932
933/* BGP_NOTIFY_UPDATE_ERR sub codes. */
934#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
935#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
936#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
937#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
938#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
939#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
940#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
941#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
942#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
943#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
944#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
945#define BGP_NOTIFY_UPDATE_MAX 12
946
4b4e07d2 947/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 948#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
949#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
950#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
951#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
952#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
953#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 954#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
955#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
956#define BGP_NOTIFY_CEASE_MAX 9
718e3744 957
958/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
959#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
960#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
961#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
962#define BGP_NOTIFY_CAPABILITY_MAX 4
963
964/* BGP finite state machine status. */
965#define Idle 1
966#define Connect 2
967#define Active 3
968#define OpenSent 4
969#define OpenConfirm 5
970#define Established 6
ca058a30
PJ		 971#define Clearing 7
972#define Deleted 8
973#define BGP_STATUS_MAX 9
718e3744 974
975/* BGP finite state machine events. */
976#define BGP_Start 1
977#define BGP_Stop 2
978#define TCP_connection_open 3
979#define TCP_connection_closed 4
980#define TCP_connection_open_failed 5
981#define TCP_fatal_error 6
982#define ConnectRetry_timer_expired 7
983#define Hold_Timer_expired 8
984#define KeepAlive_timer_expired 9
985#define Receive_OPEN_message 10
986#define Receive_KEEPALIVE_message 11
987#define Receive_UPDATE_message 12
988#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 989#define Clearing_Completed 14
990#define BGP_EVENTS_MAX 15
718e3744 991
992/* BGP timers default value. */
5ca5f1c8 993#define BGP_INIT_START_TIMER 1
3fd8c527
DW		 994#define BGP_DEFAULT_HOLDTIME 9
995#define BGP_DEFAULT_KEEPALIVE 3
12179ba3 996#define BGP_DEFAULT_EBGP_ROUTEADV 0
1670355a 997#define BGP_DEFAULT_IBGP_ROUTEADV 0
23a1f277 998#define BGP_DEFAULT_CONNECT_RETRY 10
718e3744 999
1000/* BGP default local preference. */
1001#define BGP_DEFAULT_LOCAL_PREF 100
1002
3f9c7369
DS		 1003/* BGP default subgroup packet queue max . */
1004#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1005
538621f2 1006/* BGP graceful restart */
1007#define BGP_DEFAULT_RESTART_TIME 120
1008#define BGP_DEFAULT_STALEPATH_TIME 360
1009
42e6d745
DO		 1010/* RFC4364 */
1011#define SAFI_MPLS_LABELED_VPN 128
718e3744 1012
1013/* Max TTL value. */
1014#define TTL_MAX 255
1015
1016/* BGP uptime string length. */
1017#define BGP_UPTIME_LEN 25
1018
1019/* Default configuration settings for bgpd. */
1020#define BGP_VTY_PORT 2605
718e3744 1021#define BGP_DEFAULT_CONFIG "bgpd.conf"
1022
1023/* Check AS path loop when we send NLRI. */
1024/* #define BGP_SEND_ASPATH_CHECK */
1025
f14e6fdb
DS		 1026/* BGP Dynamic Neighbors feature */
1027#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1028#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1029#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1030
718e3744 1031/* Flag for peer_clear_soft(). */
1032enum bgp_clear_type
1033{
1034 BGP_CLEAR_SOFT_NONE,
1035 BGP_CLEAR_SOFT_OUT,
1036 BGP_CLEAR_SOFT_IN,
1037 BGP_CLEAR_SOFT_BOTH,
2a3d5731 1038 BGP_CLEAR_SOFT_IN_ORF_PREFIX
718e3744 1039};
1040
1041/* Macros. */
1042#define BGP_INPUT(P) ((P)->ibuf)
1043#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
6aa136f1
VS		 1044#define BGP_IS_VALID_STATE_FOR_NOTIF(S)\
1045 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1046
718e3744 1047/* Count prefix size from mask length */
1048#define PSIZE(a) (((a) + 7) / (8))
1049
1050/* BGP error codes. */
1051#define BGP_SUCCESS 0
1052#define BGP_ERR_INVALID_VALUE -1
1053#define BGP_ERR_INVALID_FLAG -2
1054#define BGP_ERR_INVALID_AS -3
1055#define BGP_ERR_INVALID_BGP -4
1056#define BGP_ERR_PEER_GROUP_MEMBER -5
1057#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
1058#define BGP_ERR_PEER_GROUP_MEMBER_EXISTS -7
1059#define BGP_ERR_PEER_BELONGS_TO_GROUP -8
1060#define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED -9
1061#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -10
1062#define BGP_ERR_PEER_GROUP_CANT_CHANGE -11
1063#define BGP_ERR_PEER_GROUP_MISMATCH -12
1064#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -13
1065#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -14
1066#define BGP_ERR_AS_MISMATCH -15
400b1fad
DW		 1067#define BGP_ERR_PEER_FLAG_CONFLICT -16
1068#define BGP_ERR_PEER_GROUP_SHUTDOWN -17
1069#define BGP_ERR_PEER_FILTER_CONFLICT -18
1070#define BGP_ERR_NOT_INTERNAL_PEER -19
1071#define BGP_ERR_REMOVE_PRIVATE_AS -20
1072#define BGP_ERR_AF_UNCONFIGURED -21
1073#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -22
1074#define BGP_ERR_INSTANCE_MISMATCH -23
1075#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -24
1076#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -25
1077#define BGP_ERR_TCPSIG_FAILED -26
1078#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -27
1079#define BGP_ERR_NO_IBGP_WITH_TTLHACK -28
1080#define BGP_ERR_NO_INTERFACE_CONFIG -29
1081#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -30
1082#define BGP_ERR_AS_OVERRIDE -31
1083#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -32
1084#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -33
1085#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -34
1086#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -35
1087#define BGP_ERR_MAX -36
718e3744 1088
3f9c7369
DS		 1089/*
1090 * Enumeration of different policy kinds a peer can be configured with.
1091 */
1092typedef enum
1093{
1094 BGP_POLICY_ROUTE_MAP,
1095 BGP_POLICY_FILTER_LIST,
1096 BGP_POLICY_PREFIX_LIST,
1097 BGP_POLICY_DISTRIBUTE_LIST,
1098} bgp_policy_type_e;
1099
718e3744 1100extern struct bgp_master *bm;
1101
718e3744 1102/* Prototypes. */
94f2b392 1103extern void bgp_terminate (void);
1104extern void bgp_reset (void);
65957886 1105extern time_t bgp_clock (void);
94f2b392 1106extern void bgp_zclient_reset (void);
1107extern int bgp_nexthop_set (union sockunion *, union sockunion *,
718e3744 1108 struct bgp_nexthop *, struct peer *);
94f2b392 1109extern struct bgp *bgp_get_default (void);
1110extern struct bgp *bgp_lookup (as_t, const char *);
1111extern struct bgp *bgp_lookup_by_name (const char *);
1112extern struct peer *peer_lookup (struct bgp *, union sockunion *);
a80beece 1113extern struct peer *peer_lookup_by_conf_if (struct bgp *, const char *);
04b6bdc0 1114extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
a80beece 1115extern struct peer *peer_conf_interface_get(struct bgp *, const char *, afi_t,
8ffedcea 1116 safi_t, int v6only);
a80beece 1117extern void bgp_peer_conf_if_to_su_update (struct peer *);
ffd0c037 1118extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
94f2b392 1119extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
1120extern struct peer_group *peer_group_get (struct bgp *, const char *);
f14e6fdb
DS		 1121extern struct peer *peer_create_bind_dynamic_neighbor (struct bgp *,
1122 union sockunion *, struct peer_group *);
1123extern struct prefix *peer_group_lookup_dynamic_neighbor_range (
1124 struct peer_group *, struct prefix *);
1125extern struct peer_group *peer_group_lookup_dynamic_neighbor (struct bgp *,
1126 struct prefix *, struct prefix **);
1127extern struct peer *peer_lookup_dynamic_neighbor (struct bgp *,
1128 union sockunion *);
1129extern void peer_drop_dynamic_neighbor (struct peer *);
28066f4b
DS		 1130
1131/*
1132 * Peers are incredibly easy to memory leak
1133 * due to the various ways that they are actually used
1134 * Provide some functionality to debug locks and unlocks
1135 */
1136extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1137extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1138#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1139#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1140
6d85b15b 1141extern bgp_peer_sort_t peer_sort (struct peer *peer);
94f2b392 1142extern int peer_active (struct peer *);
1143extern int peer_active_nego (struct peer *);
06370dac 1144extern void bgp_recalculate_all_bestpaths (struct bgp *bgp);
a80beece 1145extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
0299c004 1146 as_t, as_t, int, afi_t, safi_t);
94f2b392 1147extern struct peer *peer_create_accept (struct bgp *);
1ff9a340 1148extern void peer_xfer_config (struct peer *dst, struct peer *src);
856ca177
MS		 1149extern char *peer_uptime (time_t, char *, size_t, u_char, json_object *);
1150
94f2b392 1151extern int bgp_config_write (struct vty *);
1152extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
6b0655a2 1153
94f2b392 1154extern void bgp_master_init (void);
718e3744 1155
94f2b392 1156extern void bgp_init (void);
1157extern void bgp_route_map_init (void);
718e3744 1158
94f2b392 1159extern int bgp_option_set (int);
1160extern int bgp_option_unset (int);
1161extern int bgp_option_check (int);
718e3744 1162
94f2b392 1163extern int bgp_get (struct bgp **, as_t *, const char *);
1164extern int bgp_delete (struct bgp *);
718e3744 1165
94f2b392 1166extern int bgp_flag_set (struct bgp *, int);
1167extern int bgp_flag_unset (struct bgp *, int);
1168extern int bgp_flag_check (struct bgp *, int);
718e3744 1169
0088b5dc
SH		 1170extern void bgp_lock (struct bgp *);
1171extern void bgp_unlock (struct bgp *);
1172
94f2b392 1173extern int bgp_router_id_set (struct bgp *, struct in_addr *);
718e3744 1174
94f2b392 1175extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
1176extern int bgp_cluster_id_unset (struct bgp *);
718e3744 1177
94f2b392 1178extern int bgp_confederation_id_set (struct bgp *, as_t);
1179extern int bgp_confederation_id_unset (struct bgp *);
1180extern int bgp_confederation_peers_check (struct bgp *, as_t);
718e3744 1181
94f2b392 1182extern int bgp_confederation_peers_add (struct bgp *, as_t);
1183extern int bgp_confederation_peers_remove (struct bgp *, as_t);
718e3744 1184
94f2b392 1185extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
1186extern int bgp_timers_unset (struct bgp *);
718e3744 1187
94f2b392 1188extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
1189extern int bgp_default_local_preference_unset (struct bgp *);
718e3744 1190
3f9c7369
DS		 1191extern int bgp_default_subgroup_pkt_queue_max_set (struct bgp *bgp, u_int32_t);
1192extern int bgp_default_subgroup_pkt_queue_max_unset (struct bgp *bgp);
1193
f14e6fdb
DS		 1194extern int bgp_listen_limit_set (struct bgp *, int);
1195extern int bgp_listen_limit_unset (struct bgp *);
1196
f188f2c4
DS		 1197extern int bgp_update_delay_active (struct bgp *);
1198extern int bgp_update_delay_configured (struct bgp *);
0299c004 1199extern void peer_as_change (struct peer *, as_t, int);
a80beece 1200extern int peer_remote_as (struct bgp *, union sockunion *,const char *, as_t *,
0299c004
DS		 1201 int, afi_t, safi_t);
1202extern int peer_group_remote_as (struct bgp *, const char *, as_t *, int);
94f2b392 1203extern int peer_delete (struct peer *peer);
1204extern int peer_group_delete (struct peer_group *);
1205extern int peer_group_remote_as_delete (struct peer_group *);
f14e6fdb 1206extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1207
94f2b392 1208extern int peer_activate (struct peer *, afi_t, safi_t);
1209extern int peer_deactivate (struct peer *, afi_t, safi_t);
718e3744 1210
a80beece
DS		 1211extern int peer_group_bind (struct bgp *, union sockunion *, struct peer *,
1212 struct peer_group *, afi_t, safi_t, as_t *);
94f2b392 1213extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
718e3744 1214 afi_t, safi_t);
1215
94f2b392 1216extern int peer_flag_set (struct peer *, u_int32_t);
1217extern int peer_flag_unset (struct peer *, u_int32_t);
718e3744 1218
94f2b392 1219extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
1220extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
1221extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1222
94f2b392 1223extern int peer_ebgp_multihop_set (struct peer *, int);
1224extern int peer_ebgp_multihop_unset (struct peer *);
c43ed2e4 1225extern int is_ebgp_multihop_configured (struct peer *peer);
718e3744 1226
94f2b392 1227extern int peer_description_set (struct peer *, char *);
1228extern int peer_description_unset (struct peer *);
718e3744 1229
94f2b392 1230extern int peer_update_source_if_set (struct peer *, const char *);
1231extern int peer_update_source_addr_set (struct peer *, union sockunion *);
1232extern int peer_update_source_unset (struct peer *);
718e3744 1233
94f2b392 1234extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
1235extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
718e3744 1236
94f2b392 1237extern int peer_port_set (struct peer *, u_int16_t);
1238extern int peer_port_unset (struct peer *);
718e3744 1239
ffd0c037
DS		 1240extern void peer_weight_set (struct peer *, u_int16_t);
1241extern void peer_weight_unset (struct peer *);
718e3744 1242
94f2b392 1243extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
1244extern int peer_timers_unset (struct peer *);
718e3744 1245
94f2b392 1246extern int peer_timers_connect_set (struct peer *, u_int32_t);
1247extern int peer_timers_connect_unset (struct peer *);
718e3744 1248
94f2b392 1249extern int peer_advertise_interval_set (struct peer *, u_int32_t);
1250extern int peer_advertise_interval_unset (struct peer *);
718e3744 1251
ffd0c037
DS		 1252extern void peer_interface_set (struct peer *, const char *);
1253extern void peer_interface_unset (struct peer *);
718e3744 1254
94f2b392 1255extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
1256extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
718e3744 1257
94f2b392 1258extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
1259extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
718e3744 1260
9d3f9705 1261extern int peer_local_as_set (struct peer *, as_t, int, int);
94f2b392 1262extern int peer_local_as_unset (struct peer *);
718e3744 1263
94f2b392 1264extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
1265extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
718e3744 1266
94f2b392 1267extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
1268extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
718e3744 1269
94f2b392 1270extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
1271extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
718e3744 1272
94f2b392 1273extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
0df7c91f
PJ		 1274
1275extern int peer_password_set (struct peer *, const char *);
1276extern int peer_password_unset (struct peer *);
1277
94f2b392 1278extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
718e3744 1279
94f2b392 1280extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
1281extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
718e3744 1282
1ff9a340 1283extern int peer_clear (struct peer *, struct listnode **);
94f2b392 1284extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1285
fa411a21
NH		 1286extern int peer_ttl_security_hops_set (struct peer *, int);
1287extern int peer_ttl_security_hops_unset (struct peer *);
1288
518f0eb1
DS		 1289extern int bgp_route_map_update_timer (struct thread *thread);
1290extern void bgp_route_map_terminate(void);
16286195
DS		 1291
1292extern int peer_cmp (struct peer *p1, struct peer *p2);
3f9c7369
DS		 1293
1294extern struct peer_af * peer_af_create (struct peer *, afi_t, safi_t);
1295extern struct peer_af * peer_af_find (struct peer *, afi_t, safi_t);
1296extern int peer_af_delete (struct peer *, afi_t, safi_t);
1297
ffd0c037
DS		 1298extern void bgp_scan_finish(void);
1299extern void bgp_close(void);
1300
3f9c7369
DS		 1301static inline int
1302afindex (afi_t afi, safi_t safi)
1303{
1304 switch (afi)
1305 {
1306 case AFI_IP:
1307 switch (safi)
1308 {
1309 case SAFI_UNICAST:
1310 return BGP_AF_IPV4_UNICAST;
1311 break;
1312 case SAFI_MULTICAST:
1313 return BGP_AF_IPV4_MULTICAST;
1314 break;
1315 case SAFI_MPLS_VPN:
1316 return BGP_AF_IPV4_VPN;
1317 break;
1318 default:
1319 return BGP_AF_MAX;
1320 break;
1321 }
1322 break;
1323 case AFI_IP6:
1324 switch (safi)
1325 {
1326 case SAFI_UNICAST:
1327 return BGP_AF_IPV6_UNICAST;
1328 break;
1329 case SAFI_MULTICAST:
1330 return BGP_AF_IPV6_MULTICAST;
1331 break;
1332 default:
1333 return BGP_AF_MAX;
1334 break;
1335 }
1336 break;
1337 default:
1338 return BGP_AF_MAX;
1339 break;
1340 }
1341}
1342
1343/* If peer is configured at least one address family return 1. */
1344static inline int
1345peer_group_active (struct peer *peer)
1346{
1347 if (peer->af_group[AFI_IP][SAFI_UNICAST]
1348 || peer->af_group[AFI_IP][SAFI_MULTICAST]
1349 || peer->af_group[AFI_IP][SAFI_MPLS_VPN]
1350 || peer->af_group[AFI_IP6][SAFI_UNICAST]
1351 || peer->af_group[AFI_IP6][SAFI_MULTICAST])
1352 return 1;
1353 return 0;
1354}
1355
1356/* If peer is negotiated at least one address family return 1. */
1357static inline int
1358peer_afi_active_nego (const struct peer *peer, afi_t afi)
1359{
1360 if (peer->afc_nego[afi][SAFI_UNICAST]
1361 || peer->afc_nego[afi][SAFI_MULTICAST]
1362 || peer->afc_nego[afi][SAFI_MPLS_VPN])
1363 return 1;
1364 return 0;
1365}
1366
f14e6fdb
DS		 1367/* If at least one address family activated for group, return 1. */
1368static inline int
1369peer_group_af_configured (struct peer_group *group)
1370{
1371 struct peer *peer = group->conf;
1372
1373 if (peer->afc[AFI_IP][SAFI_UNICAST]
1374 || peer->afc[AFI_IP][SAFI_MULTICAST]
1375 || peer->afc[AFI_IP][SAFI_MPLS_VPN]
1376 || peer->afc[AFI_IP6][SAFI_UNICAST]
1377 || peer->afc[AFI_IP6][SAFI_MULTICAST])
1378 return 1;
1379 return 0;
1380}
1381
3f9c7369
DS		 1382static inline char *
1383timestamp_string (time_t ts)
1384{
1385#ifdef HAVE_CLOCK_MONOTONIC
1386 time_t tbuf;
1387 tbuf = time(NULL) - (bgp_clock() - ts);
1388 return ctime(&tbuf);
1389#else
1390 return ctime(&ts);
1391#endif /* HAVE_CLOCK_MONOTONIC */
1392}
1393
1394static inline int
1395peer_established (struct peer *peer)
1396{
1397 if (peer->status == Established)
1398 return 1;
1399 return 0;
1400}
1401
f14e6fdb
DS		 1402static inline int
1403peer_dynamic_neighbor (struct peer *peer)
1404{
1405 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
1406}
1407
8a92a8a0
DS		 1408/*
1409 * Currently supporting RFC 5549 for AFI_IP/SAFI_UNICAST only.
1410 *
1411 * Note: When other RFC-5549 applicable SAFIs to be supported, that should
1412 * come as an argument to this routine.
1413 */
1414static inline int
1415peer_cap_enhe (struct peer *peer)
1416{
1417 return (CHECK_FLAG(peer->af_cap[AFI_IP][SAFI_UNICAST], PEER_CAP_ENHE_AF_NEGO));
1418}
1419
00d252cb 1420#endif /* _QUAGGA_BGPD_H */
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