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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
718e3744 24/* For union sockunion. */
3f9c7369 25#include "queue.h"
718e3744 26#include "sockunion.h"
518f0eb1 27#include "routemap.h"
ffd0c037 28#include "linklist.h"
718e3744 29
3f9c7369
DS		 30struct update_subgroup;
31struct bpacket;
32
0299c004
DS		 33/*
34 * Allow the neighbor XXXX remote-as to take internal or external
35 * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement behavior
36 * in the system.
37 */
38enum {
39 AS_UNSPECIFIED = 0,
40 AS_SPECIFIED,
41 AS_INTERNAL,
42 AS_EXTERNAL,
43};
44
718e3744 45/* Typedef BGP specific types. */
0b2aa3a0
PJ		 46typedef u_int32_t as_t;
47typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
718e3744 48typedef u_int16_t bgp_size_t;
49
3f9c7369
DS		 50#define max(a,b) \
51 ({ __typeof__ (a) _a = (a); \
52 __typeof__ (b) _b = (b); \
53 _a > _b ? _a : _b; })
54
55enum bgp_af_index
56{
57 BGP_AF_START,
58 BGP_AF_IPV4_UNICAST = BGP_AF_START,
59 BGP_AF_IPV4_MULTICAST,
60 BGP_AF_IPV4_VPN,
61 BGP_AF_IPV6_UNICAST,
62 BGP_AF_IPV6_MULTICAST,
63 BGP_AF_MAX
64};
65
66#define AF_FOREACH(af) \
67 for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
68
69#define FOREACH_AFI_SAFI(afi, safi) \
70 for (afi = AFI_IP; afi < AFI_MAX; afi++) \
71 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
72
718e3744 73/* BGP master for system wide configurations and variables. */
74struct bgp_master
75{
76 /* BGP instance list. */
77 struct list *bgp;
78
79 /* BGP thread master. */
80 struct thread_master *master;
81
200df115 82 /* work queues */
83 struct work_queue *process_main_queue;
84 struct work_queue *process_rsclient_queue;
200df115 85
0df7c91f
PJ		 86 /* Listening sockets */
87 struct list *listen_sockets;
88
718e3744 89 /* BGP port number. */
90 u_int16_t port;
91
3a02d1f7
PJ		 92 /* Listener address */
93 char *address;
94
718e3744 95 /* BGP start time. */
96 time_t start_time;
97
98 /* Various BGP global configuration. */
99 u_char options;
100#define BGP_OPT_NO_FIB (1 << 0)
101#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
102#define BGP_OPT_CONFIG_CISCO (1 << 2)
cccbc015 103#define BGP_OPT_NO_LISTEN (1 << 3)
3f9c7369
DS		 104
105 u_int64_t updgrp_idspace;
106 u_int64_t subgrp_idspace;
718e3744 107};
108
73ac8160
DS		 109/* BGP route-map structure. */
110struct bgp_rmap
111{
112 char *name;
113 struct route_map *map;
114};
115
7c8ff89e
DS		 116struct bgp_redist
117{
118 u_short instance;
119
120 /* BGP redistribute metric configuration. */
121 u_char redist_metric_flag;
122 u_int32_t redist_metric;
123
124 /* BGP redistribute route-map. */
125 struct bgp_rmap rmap;
126};
127
718e3744 128/* BGP instance structure. */
129struct bgp
130{
131 /* AS number of this BGP instance. */
132 as_t as;
133
134 /* Name of this BGP instance. */
135 char *name;
200df115 136
0088b5dc
SH		 137 /* Reference count to allow peer_delete to finish after bgp_delete */
138 int lock;
139
718e3744 140 /* Self peer. */
141 struct peer *peer_self;
142
143 /* BGP peer. */
144 struct list *peer;
145
146 /* BGP peer group. */
147 struct list *group;
148
f14e6fdb
DS		 149 /* The maximum number of BGP dynamic neighbors that can be created */
150 int dynamic_neighbors_limit;
151
152 /* The current number of BGP dynamic neighbors */
153 int dynamic_neighbors_count;
154
fee0f4c6 155 /* BGP route-server-clients. */
156 struct list *rsclient;
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;
219 u_char rsclient_peers_update_hold;
f188f2c4
DS		 220 u_int16_t v_update_delay;
221 u_int16_t v_establish_wait;
222 char update_delay_begin_time[64];
223 char update_delay_end_time[64];
4a16ae86
DS		 224 char update_delay_zebra_resume_time[64];
225 char update_delay_peers_resume_time[64];
f188f2c4
DS		 226 u_int32_t established;
227 u_int32_t restarted_peers;
228 u_int32_t implicit_eors;
229 u_int32_t explicit_eors;
230#define BGP_UPDATE_DELAY_DEF 0
231#define BGP_UPDATE_DELAY_MIN 0
232#define BGP_UPDATE_DELAY_MAX 3600
233
718e3744 234 /* BGP flags. */
8bd9d948 235 u_int32_t flags;
718e3744 236#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
237#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
238#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
239#define BGP_FLAG_MED_CONFED (1 << 3)
240#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
241#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
242#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
243#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
244#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
245#define BGP_FLAG_IMPORT_CHECK (1 << 9)
246#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 247#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 248#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 249#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 250#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 251#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 252#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
16fc1eec 253#define BGP_FLAG_MULTIPATH_RELAX_NO_AS_SET (1 << 17)
078430f6
DS		 254#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
255#define BGP_FLAG_IMPORT_CHECK_EXACT_MATCH (1 << 19)
718e3744 256
257 /* BGP Per AF flags */
258 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
259#define BGP_CONFIG_DAMPENING (1 << 0)
260
261 /* Static route configuration. */
262 struct bgp_table *route[AFI_MAX][SAFI_MAX];
263
264 /* Aggregate address configuration. */
265 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
266
267 /* BGP routing information base. */
268 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
269
73ac8160
DS		 270 /* BGP table route-map. */
271 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
272
718e3744 273 /* BGP redistribute configuration. */
7c8ff89e 274 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 275
518f0eb1
DS		 276 /* timer to dampen route map changes */
277 struct thread *t_rmap_update; /* Handle route map updates */
278 u_int32_t rmap_update_timer; /* Route map update timer */
279#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
280
0de4848d
DS		 281 /* timer to re-evaluate neighbor default-originate route-maps */
282 struct thread *t_rmap_def_originate_eval;
283#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
284
718e3744 285 /* BGP distance configuration. */
286 u_char distance_ebgp;
287 u_char distance_ibgp;
288 u_char distance_local;
289
290 /* BGP default local-preference. */
291 u_int32_t default_local_pref;
292
3f9c7369
DS		 293 /* BGP default subgroup pkt queue max */
294 u_int32_t default_subgroup_pkt_queue_max;
295
718e3744 296 /* BGP default timer. */
297 u_int32_t default_holdtime;
298 u_int32_t default_keepalive;
538621f2 299
300 /* BGP graceful restart */
93406d87 301 u_int32_t restart_time;
302 u_int32_t stalepath_time;
165b5fff
JB		 303
304 /* Maximum-paths configuration */
305 struct bgp_maxpaths_cfg {
306 u_int16_t maxpaths_ebgp;
307 u_int16_t maxpaths_ibgp;
5e242b0d
DS		 308 u_int16_t ibgp_flags;
309#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
165b5fff 310 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9
DS		 311
312 u_int32_t wpkt_quanta; /* per peer packet quanta to write */
3f9c7369 313 u_int32_t coalesce_time;
718e3744 314};
315
d889623f
DS		 316#define BGP_ROUTE_ADV_HOLD(bgp) \
317 (bgp->main_peers_update_hold || bgp->rsclient_peers_update_hold)
318
718e3744 319/* BGP peer-group support. */
320struct peer_group
321{
322 /* Name of the peer-group. */
323 char *name;
324
325 /* Pointer to BGP. */
326 struct bgp *bgp;
327
328 /* Peer-group client list. */
329 struct list *peer;
330
f14e6fdb
DS		 331 /** Dynamic neighbor listening ranges */
332 struct list *listen_range[AFI_MAX];
333
718e3744 334 /* Peer-group config */
335 struct peer *conf;
336};
337
338/* BGP Notify message format. */
339struct bgp_notify
340{
341 u_char code;
342 u_char subcode;
343 char *data;
344 bgp_size_t length;
345};
346
347/* Next hop self address. */
348struct bgp_nexthop
349{
350 struct interface *ifp;
351 struct in_addr v4;
352#ifdef HAVE_IPV6
353 struct in6_addr v6_global;
354 struct in6_addr v6_local;
355#endif /* HAVE_IPV6 */
356};
357
a82478b9
DS		 358/* BGP addpath values */
359#define BGP_ADDPATH_RX 1
360#define BGP_ADDPATH_TX 2
361#define BGP_ADDPATH_ID_LEN 4
362
718e3744 363/* BGP router distinguisher value. */
364#define BGP_RD_SIZE 8
365
366struct bgp_rd
367{
368 u_char val[BGP_RD_SIZE];
369};
370
fee0f4c6 371#define RMAP_IN 0
372#define RMAP_OUT 1
373#define RMAP_IMPORT 2
374#define RMAP_EXPORT 3
375#define RMAP_MAX 4
376
718e3744 377/* BGP filter structure. */
378struct bgp_filter
379{
380 /* Distribute-list. */
381 struct
382 {
383 char *name;
384 struct access_list *alist;
385 } dlist[FILTER_MAX];
386
387 /* Prefix-list. */
388 struct
389 {
390 char *name;
391 struct prefix_list *plist;
392 } plist[FILTER_MAX];
393
394 /* Filter-list. */
395 struct
396 {
397 char *name;
398 struct as_list *aslist;
399 } aslist[FILTER_MAX];
400
401 /* Route-map. */
402 struct
403 {
404 char *name;
405 struct route_map *map;
fee0f4c6 406 } map[RMAP_MAX];
718e3744 407
408 /* Unsuppress-map. */
409 struct
410 {
411 char *name;
412 struct route_map *map;
413 } usmap;
414};
415
6d85b15b
JBD		 416/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
417 a peer who's AS is part of our Confederation. */
418typedef enum
419{
420 BGP_PEER_IBGP = 1,
421 BGP_PEER_EBGP,
422 BGP_PEER_INTERNAL,
423 BGP_PEER_CONFED,
424} bgp_peer_sort_t;
425
d6661008
DS		 426/* BGP message header and packet size. */
427#define BGP_MARKER_SIZE 16
428#define BGP_HEADER_SIZE 19
429#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 430#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 431
3f9c7369
DS		 432/*
433 * Trigger delay for bgp_announce_route().
434 */
435#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
436#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
437
438struct peer_af
439{
440 /* back pointer to the peer */
441 struct peer *peer;
442
443 /* which subgroup the peer_af belongs to */
444 struct update_subgroup *subgroup;
445
446 /* for being part of an update subgroup's peer list */
447 LIST_ENTRY(peer_af) subgrp_train;
448
449 /* for being part of a packet's peer list */
450 LIST_ENTRY(peer_af) pkt_train;
451
452 struct bpacket *next_pkt_to_send;
453
454 /*
455 * Trigger timer for bgp_announce_route().
456 */
457 struct thread *t_announce_route;
458
459 afi_t afi;
460 safi_t safi;
461 int afid;
462};
463
718e3744 464/* BGP neighbor structure. */
465struct peer
466{
467 /* BGP structure. */
468 struct bgp *bgp;
469
200df115 470 /* reference count, primarily to allow bgp_process'ing of route_node's
471 * to be done after a struct peer is deleted.
472 *
473 * named 'lock' for hysterical reasons within Quagga.
474 */
475 int lock;
476
718e3744 477 /* BGP peer group. */
478 struct peer_group *group;
479 u_char af_group[AFI_MAX][SAFI_MAX];
3f9c7369
DS		 480 u_int64_t version[AFI_MAX][SAFI_MAX];
481
482 /* BGP peer_af structures, per configured AF on this peer */
483 struct peer_af *peer_af_array[BGP_AF_MAX];
718e3744 484
485 /* Peer's remote AS number. */
0299c004
DS		 486 int as_type;
487 as_t as;
718e3744 488
489 /* Peer's local AS number. */
490 as_t local_as;
491
6d85b15b
JBD		 492 bgp_peer_sort_t sort;
493
718e3744 494 /* Peer's Change local AS number. */
495 as_t change_local_as;
496
497 /* Remote router ID. */
498 struct in_addr remote_id;
499
500 /* Local router ID. */
501 struct in_addr local_id;
502
fee0f4c6 503 /* Peer specific RIB when configured as route-server-client. */
504 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
505
718e3744 506 /* Packet receive and send buffer. */
507 struct stream *ibuf;
508 struct stream_fifo *obuf;
509 struct stream *work;
510
8c71e481
PM		 511 /* We use a separate stream to encode MP_REACH_NLRI for efficient
512 * NLRI packing. peer->work stores all the other attributes. The
513 * actual packet is then constructed by concatenating the two.
514 */
515 struct stream *scratch;
516
1ff9a340
DS		 517 /* the doppelganger peer structure, due to dual TCP conn setup */
518 struct peer *doppelganger;
519
718e3744 520 /* Status of the peer. */
521 int status;
522 int ostatus;
523
6403814c
DS		 524 /* FSM events, stored for debug purposes.
525 * Note: uchar used for reduced memory usage.
526 */
527 unsigned char cur_event;
528 unsigned char last_event;
529 unsigned char last_major_event;
530
0b2aa3a0
PJ		 531 /* Peer index, used for dumping TABLE_DUMP_V2 format */
532 uint16_t table_dump_index;
533
718e3744 534 /* Peer information */
eb821189 535 int fd; /* File descriptor */
536 int ttl; /* TTL of TCP connection to the peer. */
fa411a21 537 int gtsm_hops; /* minimum hopcount to peer */
eb821189 538 char *desc; /* Description of the peer. */
539 unsigned short port; /* Destination port for peer */
540 char *host; /* Printable address of the peer. */
541 union sockunion su; /* Sockunion address of the peer. */
a80beece 542#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
eb821189 543 time_t uptime; /* Last Up/Down time */
544 time_t readtime; /* Last read time */
545 time_t resettime; /* Last reset time */
718e3744 546
eb821189 547 unsigned int ifindex; /* ifindex of the BGP connection. */
a80beece 548 char *conf_if; /* neighbor interface config name. */
eb821189 549 char *ifname; /* bind interface name. */
550 char *update_if;
551 union sockunion *update_source;
eb821189 552
553 union sockunion *su_local; /* Sockunion of local address. */
554 union sockunion *su_remote; /* Sockunion of remote address. */
555 int shared_network; /* Is this peer shared same network. */
556 struct bgp_nexthop nexthop; /* Nexthop */
718e3744 557
558 /* Peer address family configuration. */
559 u_char afc[AFI_MAX][SAFI_MAX];
560 u_char afc_nego[AFI_MAX][SAFI_MAX];
561 u_char afc_adv[AFI_MAX][SAFI_MAX];
562 u_char afc_recv[AFI_MAX][SAFI_MAX];
563
0a486e5f 564 /* Capability flags (reset in bgp_stop) */
6410e93a 565 u_int32_t cap;
718e3744 566#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
567#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
568#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
569#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
570#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 571#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
572#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 573#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
574#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 575#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
576#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 577#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
578#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
c744aa9f
DS		 579#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
580#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
718e3744 581
0a486e5f 582 /* Capability flags (reset in bgp_stop) */
718e3744 583 u_int16_t af_cap[AFI_MAX][SAFI_MAX];
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)*/
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 */
9e7a53c1 640#define PEER_FLAG_NEXTHOP_SELF_ALL (1 << 17) /* next-hop-self all */
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 */
0df7c91f
PJ		 644
645 /* MD5 password */
646 char *password;
718e3744 647
648 /* default-originate route-map. */
649 struct
650 {
651 char *name;
652 struct route_map *map;
653 } default_rmap[AFI_MAX][SAFI_MAX];
654
655 /* Peer status flags. */
656 u_int16_t sflags;
657#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
658#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
659#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
660#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
661#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 662#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
663#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 664
0a486e5f 665 /* Peer status af flags (reset in bgp_stop) */
718e3744 666 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
667#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
668#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 669#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
670#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
671#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
672#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 673
718e3744 674 /* Default attribute value for the peer. */
675 u_int32_t config;
676#define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
677#define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
678#define PEER_CONFIG_CONNECT (1 << 2) /* connect */
679#define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
8ffedcea 680
718e3744 681 u_int32_t weight;
682 u_int32_t holdtime;
683 u_int32_t keepalive;
684 u_int32_t connect;
685 u_int32_t routeadv;
686
687 /* Timer values. */
688 u_int32_t v_start;
689 u_int32_t v_connect;
690 u_int32_t v_holdtime;
691 u_int32_t v_keepalive;
692 u_int32_t v_asorig;
693 u_int32_t v_routeadv;
0a486e5f 694 u_int32_t v_pmax_restart;
93406d87 695 u_int32_t v_gr_restart;
718e3744 696
697 /* Threads. */
698 struct thread *t_read;
699 struct thread *t_write;
700 struct thread *t_start;
701 struct thread *t_connect;
702 struct thread *t_holdtime;
703 struct thread *t_keepalive;
704 struct thread *t_asorig;
705 struct thread *t_routeadv;
0a486e5f 706 struct thread *t_pmax_restart;
93406d87 707 struct thread *t_gr_restart;
708 struct thread *t_gr_stale;
64e580a7
PJ		 709
710 /* workqueues */
711 struct work_queue *clear_node_queue;
712
718e3744 713 /* Statistics field */
714 u_int32_t open_in; /* Open message input count */
715 u_int32_t open_out; /* Open message output count */
716 u_int32_t update_in; /* Update message input count */
717 u_int32_t update_out; /* Update message ouput count */
718 time_t update_time; /* Update message received time. */
719 u_int32_t keepalive_in; /* Keepalive input count */
720 u_int32_t keepalive_out; /* Keepalive output count */
721 u_int32_t notify_in; /* Notify input count */
722 u_int32_t notify_out; /* Notify output count */
723 u_int32_t refresh_in; /* Route Refresh input count */
724 u_int32_t refresh_out; /* Route Refresh output count */
725 u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
726 u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
727
728 /* BGP state count */
729 u_int32_t established; /* Established */
730 u_int32_t dropped; /* Dropped */
731
f188f2c4
DS		 732 /* Update delay related fields */
733 u_char update_delay_over; /* When this is set, BGP is no more waiting for EOR */
734
718e3744 735 /* Syncronization list and time. */
736 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
737 time_t synctime;
cb1faec9 738 time_t last_write; /* timestamp when the last UPDATE msg was written */
718e3744 739
740 /* Send prefix count. */
741 unsigned long scount[AFI_MAX][SAFI_MAX];
742
743 /* Announcement attribute hash. */
744 struct hash *hash[AFI_MAX][SAFI_MAX];
745
746 /* Notify data. */
747 struct bgp_notify notify;
748
749 /* Whole packet size to be read. */
750 unsigned long packet_size;
751
752 /* Filter structure. */
753 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
754
755 /* ORF Prefix-list */
756 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
757
16286195
DS		 758 /* Text description of last attribute rcvd */
759 char rcvd_attr_str[BUFSIZ];
760
761 /* Track if we printed the attribute in debugs */
762 int rcvd_attr_printed;
763
718e3744 764 /* Prefix count. */
765 unsigned long pcount[AFI_MAX][SAFI_MAX];
766
767 /* Max prefix count. */
768 unsigned long pmax[AFI_MAX][SAFI_MAX];
e0701b79 769 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
0a486e5f 770 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 771#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 772
773 /* allowas-in. */
774 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 775
e0701b79 776 /* peer reset cause */
777 char last_reset;
778#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
779#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
780#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
781#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
782#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
783#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
784#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
785#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
786#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
787#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
788#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
789#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
790#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
791#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
792#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
793#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
794#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
795#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
796#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
797#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
798#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 799#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
8ffedcea 800#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
7bbc6864 801#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
d6661008
DS		 802unsigned long last_reset_cause_size;
803u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 804
ac41b2a2 805 /* The kind of route-map Flags.*/
806 u_char rmap_type;
807#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
808#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
809#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
810#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
811#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
812#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 813#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
814#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a 815
c43ed2e4
DS		 816 /* peer specific BFD information */
817 void *bfd_info;
718e3744 818};
819
0df7c91f
PJ		 820#define PEER_PASSWORD_MINLEN (1)
821#define PEER_PASSWORD_MAXLEN (80)
822
718e3744 823/* This structure's member directly points incoming packet data
824 stream. */
825struct bgp_nlri
826{
827 /* AFI. */
828 afi_t afi;
829
830 /* SAFI. */
831 safi_t safi;
832
833 /* Pointer to NLRI byte stream. */
834 u_char *nlri;
835
836 /* Length of whole NLRI. */
837 bgp_size_t length;
838};
839
3f9c7369
DS		 840#define PEERAF_FOREACH(peer, paf, afi) \
841 for ((afi) = BGP_AF_START, (paf) = (peer)->peer_af_array[(afi)]; \
842 (afi) < BGP_AF_MAX; \
843 (afi)++, (paf) = (peer)->peer_af_array[(afi)]) \
844 if ((paf) != NULL) \
845
718e3744 846/* BGP versions. */
847#define BGP_VERSION_4 4
718e3744 848
849/* Default BGP port number. */
850#define BGP_PORT_DEFAULT 179
851
718e3744 852/* BGP minimum message size. */
853#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
854#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
855#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
856#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
857#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
858#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
859
860/* BGP message types. */
861#define BGP_MSG_OPEN 1
862#define BGP_MSG_UPDATE 2
863#define BGP_MSG_NOTIFY 3
864#define BGP_MSG_KEEPALIVE 4
865#define BGP_MSG_ROUTE_REFRESH_NEW 5
866#define BGP_MSG_CAPABILITY 6
867#define BGP_MSG_ROUTE_REFRESH_OLD 128
868
869/* BGP open optional parameter. */
870#define BGP_OPEN_OPT_AUTH 1
871#define BGP_OPEN_OPT_CAP 2
872
873/* BGP4 attribute type codes. */
874#define BGP_ATTR_ORIGIN 1
875#define BGP_ATTR_AS_PATH 2
876#define BGP_ATTR_NEXT_HOP 3
877#define BGP_ATTR_MULTI_EXIT_DISC 4
878#define BGP_ATTR_LOCAL_PREF 5
879#define BGP_ATTR_ATOMIC_AGGREGATE 6
880#define BGP_ATTR_AGGREGATOR 7
881#define BGP_ATTR_COMMUNITIES 8
882#define BGP_ATTR_ORIGINATOR_ID 9
883#define BGP_ATTR_CLUSTER_LIST 10
884#define BGP_ATTR_DPA 11
885#define BGP_ATTR_ADVERTISER 12
886#define BGP_ATTR_RCID_PATH 13
887#define BGP_ATTR_MP_REACH_NLRI 14
888#define BGP_ATTR_MP_UNREACH_NLRI 15
889#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 890#define BGP_ATTR_AS4_PATH 17
891#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 892#define BGP_ATTR_AS_PATHLIMIT 21
718e3744 893
894/* BGP update origin. */
895#define BGP_ORIGIN_IGP 0
896#define BGP_ORIGIN_EGP 1
897#define BGP_ORIGIN_INCOMPLETE 2
898
899/* BGP notify message codes. */
900#define BGP_NOTIFY_HEADER_ERR 1
901#define BGP_NOTIFY_OPEN_ERR 2
902#define BGP_NOTIFY_UPDATE_ERR 3
903#define BGP_NOTIFY_HOLD_ERR 4
904#define BGP_NOTIFY_FSM_ERR 5
905#define BGP_NOTIFY_CEASE 6
906#define BGP_NOTIFY_CAPABILITY_ERR 7
907#define BGP_NOTIFY_MAX 8
908
4b4e07d2
DT		 909#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
910
718e3744 911/* BGP_NOTIFY_HEADER_ERR sub codes. */
912#define BGP_NOTIFY_HEADER_NOT_SYNC 1
913#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
914#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
915#define BGP_NOTIFY_HEADER_MAX 4
916
917/* BGP_NOTIFY_OPEN_ERR sub codes. */
918#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
919#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
920#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
921#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
922#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
923#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
924#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
925#define BGP_NOTIFY_OPEN_MAX 8
926
927/* BGP_NOTIFY_UPDATE_ERR sub codes. */
928#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
929#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
930#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
931#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
932#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
933#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
934#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
935#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
936#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
937#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
938#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
939#define BGP_NOTIFY_UPDATE_MAX 12
940
4b4e07d2 941/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
718e3744 942#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
943#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
944#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
945#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
946#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
947#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 948#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
949#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
950#define BGP_NOTIFY_CEASE_MAX 9
718e3744 951
952/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
953#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
954#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
955#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
956#define BGP_NOTIFY_CAPABILITY_MAX 4
957
958/* BGP finite state machine status. */
959#define Idle 1
960#define Connect 2
961#define Active 3
962#define OpenSent 4
963#define OpenConfirm 5
964#define Established 6
ca058a30
PJ		 965#define Clearing 7
966#define Deleted 8
967#define BGP_STATUS_MAX 9
718e3744 968
969/* BGP finite state machine events. */
970#define BGP_Start 1
971#define BGP_Stop 2
972#define TCP_connection_open 3
973#define TCP_connection_closed 4
974#define TCP_connection_open_failed 5
975#define TCP_fatal_error 6
976#define ConnectRetry_timer_expired 7
977#define Hold_Timer_expired 8
978#define KeepAlive_timer_expired 9
979#define Receive_OPEN_message 10
980#define Receive_KEEPALIVE_message 11
981#define Receive_UPDATE_message 12
982#define Receive_NOTIFICATION_message 13
ca058a30
PJ		 983#define Clearing_Completed 14
984#define BGP_EVENTS_MAX 15
718e3744 985
986/* BGP timers default value. */
5ca5f1c8 987#define BGP_INIT_START_TIMER 1
718e3744 988#define BGP_ERROR_START_TIMER 30
989#define BGP_DEFAULT_HOLDTIME 180
990#define BGP_DEFAULT_KEEPALIVE 60
991#define BGP_DEFAULT_ASORIGINATE 15
992#define BGP_DEFAULT_EBGP_ROUTEADV 30
993#define BGP_DEFAULT_IBGP_ROUTEADV 5
718e3744 994#define BGP_DEFAULT_CONNECT_RETRY 120
995
996/* BGP default local preference. */
997#define BGP_DEFAULT_LOCAL_PREF 100
998
3f9c7369
DS		 999/* BGP default subgroup packet queue max . */
1000#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1001
538621f2 1002/* BGP graceful restart */
1003#define BGP_DEFAULT_RESTART_TIME 120
1004#define BGP_DEFAULT_STALEPATH_TIME 360
1005
42e6d745
DO		 1006/* RFC4364 */
1007#define SAFI_MPLS_LABELED_VPN 128
718e3744 1008
1009/* Max TTL value. */
1010#define TTL_MAX 255
1011
1012/* BGP uptime string length. */
1013#define BGP_UPTIME_LEN 25
1014
1015/* Default configuration settings for bgpd. */
1016#define BGP_VTY_PORT 2605
718e3744 1017#define BGP_DEFAULT_CONFIG "bgpd.conf"
1018
1019/* Check AS path loop when we send NLRI. */
1020/* #define BGP_SEND_ASPATH_CHECK */
1021
f14e6fdb
DS		 1022/* BGP Dynamic Neighbors feature */
1023#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1024#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1025#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1026
718e3744 1027/* Flag for peer_clear_soft(). */
1028enum bgp_clear_type
1029{
1030 BGP_CLEAR_SOFT_NONE,
1031 BGP_CLEAR_SOFT_OUT,
1032 BGP_CLEAR_SOFT_IN,
1033 BGP_CLEAR_SOFT_BOTH,
fee0f4c6 1034 BGP_CLEAR_SOFT_IN_ORF_PREFIX,
1035 BGP_CLEAR_SOFT_RSCLIENT
718e3744 1036};
1037
1038/* Macros. */
1039#define BGP_INPUT(P) ((P)->ibuf)
1040#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
6aa136f1
VS		 1041#define BGP_IS_VALID_STATE_FOR_NOTIF(S)\
1042 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1043
718e3744 1044/* Count prefix size from mask length */
1045#define PSIZE(a) (((a) + 7) / (8))
1046
1047/* BGP error codes. */
1048#define BGP_SUCCESS 0
1049#define BGP_ERR_INVALID_VALUE -1
1050#define BGP_ERR_INVALID_FLAG -2
1051#define BGP_ERR_INVALID_AS -3
1052#define BGP_ERR_INVALID_BGP -4
1053#define BGP_ERR_PEER_GROUP_MEMBER -5
1054#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
1055#define BGP_ERR_PEER_GROUP_MEMBER_EXISTS -7
1056#define BGP_ERR_PEER_BELONGS_TO_GROUP -8
1057#define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED -9
1058#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -10
1059#define BGP_ERR_PEER_GROUP_CANT_CHANGE -11
1060#define BGP_ERR_PEER_GROUP_MISMATCH -12
1061#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -13
1062#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -14
1063#define BGP_ERR_AS_MISMATCH -15
1064#define BGP_ERR_PEER_INACTIVE -16
1065#define BGP_ERR_INVALID_FOR_PEER_GROUP_MEMBER -17
1066#define BGP_ERR_PEER_GROUP_HAS_THE_FLAG -18
1067#define BGP_ERR_PEER_FLAG_CONFLICT -19
1068#define BGP_ERR_PEER_GROUP_SHUTDOWN -20
1069#define BGP_ERR_PEER_FILTER_CONFLICT -21
1070#define BGP_ERR_NOT_INTERNAL_PEER -22
1071#define BGP_ERR_REMOVE_PRIVATE_AS -23
1072#define BGP_ERR_AF_UNCONFIGURED -24
1073#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -25
1074#define BGP_ERR_INSTANCE_MISMATCH -26
1075#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -27
1076#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -28
0df7c91f 1077#define BGP_ERR_TCPSIG_FAILED -29
fa411a21 1078#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -30
f5a4827d 1079#define BGP_ERR_NO_IBGP_WITH_TTLHACK -31
a80beece 1080#define BGP_ERR_NO_INTERFACE_CONFIG -32
9d3f9705 1081#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -33
c7122e14 1082#define BGP_ERR_AS_OVERRIDE -34
f14e6fdb
DS		 1083#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -35
1084#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -36
1085#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -37
1086#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -38
1087#define BGP_ERR_MAX -39
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
1102extern struct thread_master *master;
1103
1104/* Prototypes. */
94f2b392 1105extern void bgp_terminate (void);
1106extern void bgp_reset (void);
65957886 1107extern time_t bgp_clock (void);
94f2b392 1108extern void bgp_zclient_reset (void);
1109extern int bgp_nexthop_set (union sockunion *, union sockunion *,
718e3744 1110 struct bgp_nexthop *, struct peer *);
94f2b392 1111extern struct bgp *bgp_get_default (void);
1112extern struct bgp *bgp_lookup (as_t, const char *);
1113extern struct bgp *bgp_lookup_by_name (const char *);
1114extern struct peer *peer_lookup (struct bgp *, union sockunion *);
a80beece
DS		 1115extern struct peer *peer_lookup_by_conf_if (struct bgp *, const char *);
1116extern struct peer *peer_conf_interface_get(struct bgp *, const char *, afi_t,
8ffedcea 1117 safi_t, int v6only);
a80beece 1118extern void bgp_peer_conf_if_to_su_update (struct peer *);
ffd0c037 1119extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
94f2b392 1120extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
1121extern struct peer_group *peer_group_get (struct bgp *, const char *);
f14e6fdb
DS		 1122extern struct peer *peer_create_bind_dynamic_neighbor (struct bgp *,
1123 union sockunion *, struct peer_group *);
1124extern struct prefix *peer_group_lookup_dynamic_neighbor_range (
1125 struct peer_group *, struct prefix *);
1126extern struct peer_group *peer_group_lookup_dynamic_neighbor (struct bgp *,
1127 struct prefix *, struct prefix **);
1128extern struct peer *peer_lookup_dynamic_neighbor (struct bgp *,
1129 union sockunion *);
1130extern void peer_drop_dynamic_neighbor (struct peer *);
200df115 1131extern struct peer *peer_lock (struct peer *);
1132extern struct peer *peer_unlock (struct peer *);
6d85b15b 1133extern bgp_peer_sort_t peer_sort (struct peer *peer);
94f2b392 1134extern int peer_active (struct peer *);
1135extern int peer_active_nego (struct peer *);
a80beece 1136extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
0299c004 1137 as_t, as_t, int, afi_t, safi_t);
94f2b392 1138extern struct peer *peer_create_accept (struct bgp *);
1ff9a340 1139extern void peer_xfer_config (struct peer *dst, struct peer *src);
94f2b392 1140extern char *peer_uptime (time_t, char *, size_t);
1141extern int bgp_config_write (struct vty *);
1142extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
6b0655a2 1143
94f2b392 1144extern void bgp_master_init (void);
718e3744 1145
94f2b392 1146extern void bgp_init (void);
1147extern void bgp_route_map_init (void);
718e3744 1148
94f2b392 1149extern int bgp_option_set (int);
1150extern int bgp_option_unset (int);
1151extern int bgp_option_check (int);
718e3744 1152
94f2b392 1153extern int bgp_get (struct bgp **, as_t *, const char *);
1154extern int bgp_delete (struct bgp *);
718e3744 1155
94f2b392 1156extern int bgp_flag_set (struct bgp *, int);
1157extern int bgp_flag_unset (struct bgp *, int);
1158extern int bgp_flag_check (struct bgp *, int);
718e3744 1159
0088b5dc
SH		 1160extern void bgp_lock (struct bgp *);
1161extern void bgp_unlock (struct bgp *);
1162
94f2b392 1163extern int bgp_router_id_set (struct bgp *, struct in_addr *);
718e3744 1164
94f2b392 1165extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
1166extern int bgp_cluster_id_unset (struct bgp *);
718e3744 1167
94f2b392 1168extern int bgp_confederation_id_set (struct bgp *, as_t);
1169extern int bgp_confederation_id_unset (struct bgp *);
1170extern int bgp_confederation_peers_check (struct bgp *, as_t);
718e3744 1171
94f2b392 1172extern int bgp_confederation_peers_add (struct bgp *, as_t);
1173extern int bgp_confederation_peers_remove (struct bgp *, as_t);
718e3744 1174
94f2b392 1175extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
1176extern int bgp_timers_unset (struct bgp *);
718e3744 1177
94f2b392 1178extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
1179extern int bgp_default_local_preference_unset (struct bgp *);
718e3744 1180
3f9c7369
DS		 1181extern int bgp_default_subgroup_pkt_queue_max_set (struct bgp *bgp, u_int32_t);
1182extern int bgp_default_subgroup_pkt_queue_max_unset (struct bgp *bgp);
1183
f14e6fdb
DS		 1184extern int bgp_listen_limit_set (struct bgp *, int);
1185extern int bgp_listen_limit_unset (struct bgp *);
1186
f188f2c4
DS		 1187extern int bgp_update_delay_active (struct bgp *);
1188extern int bgp_update_delay_configured (struct bgp *);
94f2b392 1189extern int peer_rsclient_active (struct peer *);
0299c004 1190extern void peer_as_change (struct peer *, as_t, int);
a80beece 1191extern int peer_remote_as (struct bgp *, union sockunion *,const char *, as_t *,
0299c004
DS		 1192 int, afi_t, safi_t);
1193extern int peer_group_remote_as (struct bgp *, const char *, as_t *, int);
94f2b392 1194extern int peer_delete (struct peer *peer);
1195extern int peer_group_delete (struct peer_group *);
1196extern int peer_group_remote_as_delete (struct peer_group *);
f14e6fdb 1197extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1198
94f2b392 1199extern int peer_activate (struct peer *, afi_t, safi_t);
1200extern int peer_deactivate (struct peer *, afi_t, safi_t);
718e3744 1201
a80beece
DS		 1202extern int peer_group_bind (struct bgp *, union sockunion *, struct peer *,
1203 struct peer_group *, afi_t, safi_t, as_t *);
94f2b392 1204extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
718e3744 1205 afi_t, safi_t);
1206
94f2b392 1207extern int peer_flag_set (struct peer *, u_int32_t);
1208extern int peer_flag_unset (struct peer *, u_int32_t);
718e3744 1209
94f2b392 1210extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
1211extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
1212extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1213
94f2b392 1214extern int peer_ebgp_multihop_set (struct peer *, int);
1215extern int peer_ebgp_multihop_unset (struct peer *);
c43ed2e4 1216extern int is_ebgp_multihop_configured (struct peer *peer);
718e3744 1217
94f2b392 1218extern int peer_description_set (struct peer *, char *);
1219extern int peer_description_unset (struct peer *);
718e3744 1220
94f2b392 1221extern int peer_update_source_if_set (struct peer *, const char *);
1222extern int peer_update_source_addr_set (struct peer *, union sockunion *);
1223extern int peer_update_source_unset (struct peer *);
718e3744 1224
94f2b392 1225extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
1226extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
718e3744 1227
94f2b392 1228extern int peer_port_set (struct peer *, u_int16_t);
1229extern int peer_port_unset (struct peer *);
718e3744 1230
ffd0c037
DS		 1231extern void peer_weight_set (struct peer *, u_int16_t);
1232extern void peer_weight_unset (struct peer *);
718e3744 1233
94f2b392 1234extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
1235extern int peer_timers_unset (struct peer *);
718e3744 1236
94f2b392 1237extern int peer_timers_connect_set (struct peer *, u_int32_t);
1238extern int peer_timers_connect_unset (struct peer *);
718e3744 1239
94f2b392 1240extern int peer_advertise_interval_set (struct peer *, u_int32_t);
1241extern int peer_advertise_interval_unset (struct peer *);
718e3744 1242
ffd0c037
DS		 1243extern void peer_interface_set (struct peer *, const char *);
1244extern void peer_interface_unset (struct peer *);
718e3744 1245
94f2b392 1246extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
1247extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
718e3744 1248
94f2b392 1249extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
1250extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
718e3744 1251
9d3f9705 1252extern int peer_local_as_set (struct peer *, as_t, int, int);
94f2b392 1253extern int peer_local_as_unset (struct peer *);
718e3744 1254
94f2b392 1255extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
1256extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
718e3744 1257
94f2b392 1258extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
1259extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
718e3744 1260
94f2b392 1261extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
1262extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
718e3744 1263
94f2b392 1264extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
0df7c91f
PJ		 1265
1266extern int peer_password_set (struct peer *, const char *);
1267extern int peer_password_unset (struct peer *);
1268
94f2b392 1269extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
718e3744 1270
94f2b392 1271extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
1272extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
718e3744 1273
1ff9a340 1274extern int peer_clear (struct peer *, struct listnode **);
94f2b392 1275extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1276
fa411a21
NH		 1277extern int peer_ttl_security_hops_set (struct peer *, int);
1278extern int peer_ttl_security_hops_unset (struct peer *);
1279
518f0eb1
DS		 1280extern int bgp_route_map_update_timer (struct thread *thread);
1281extern void bgp_route_map_terminate(void);
16286195
DS		 1282
1283extern int peer_cmp (struct peer *p1, struct peer *p2);
3f9c7369
DS		 1284
1285extern struct peer_af * peer_af_create (struct peer *, afi_t, safi_t);
1286extern struct peer_af * peer_af_find (struct peer *, afi_t, safi_t);
1287extern int peer_af_delete (struct peer *, afi_t, safi_t);
1288
ffd0c037
DS		 1289extern void bgp_scan_finish(void);
1290extern void bgp_close(void);
1291
3f9c7369
DS		 1292static inline int
1293afindex (afi_t afi, safi_t safi)
1294{
1295 switch (afi)
1296 {
1297 case AFI_IP:
1298 switch (safi)
1299 {
1300 case SAFI_UNICAST:
1301 return BGP_AF_IPV4_UNICAST;
1302 break;
1303 case SAFI_MULTICAST:
1304 return BGP_AF_IPV4_MULTICAST;
1305 break;
1306 case SAFI_MPLS_VPN:
1307 return BGP_AF_IPV4_VPN;
1308 break;
1309 default:
1310 return BGP_AF_MAX;
1311 break;
1312 }
1313 break;
1314 case AFI_IP6:
1315 switch (safi)
1316 {
1317 case SAFI_UNICAST:
1318 return BGP_AF_IPV6_UNICAST;
1319 break;
1320 case SAFI_MULTICAST:
1321 return BGP_AF_IPV6_MULTICAST;
1322 break;
1323 default:
1324 return BGP_AF_MAX;
1325 break;
1326 }
1327 break;
1328 default:
1329 return BGP_AF_MAX;
1330 break;
1331 }
1332}
1333
1334/* If peer is configured at least one address family return 1. */
1335static inline int
1336peer_group_active (struct peer *peer)
1337{
1338 if (peer->af_group[AFI_IP][SAFI_UNICAST]
1339 || peer->af_group[AFI_IP][SAFI_MULTICAST]
1340 || peer->af_group[AFI_IP][SAFI_MPLS_VPN]
1341 || peer->af_group[AFI_IP6][SAFI_UNICAST]
1342 || peer->af_group[AFI_IP6][SAFI_MULTICAST])
1343 return 1;
1344 return 0;
1345}
1346
1347/* If peer is negotiated at least one address family return 1. */
1348static inline int
1349peer_afi_active_nego (const struct peer *peer, afi_t afi)
1350{
1351 if (peer->afc_nego[afi][SAFI_UNICAST]
1352 || peer->afc_nego[afi][SAFI_MULTICAST]
1353 || peer->afc_nego[afi][SAFI_MPLS_VPN])
1354 return 1;
1355 return 0;
1356}
1357
f14e6fdb
DS		 1358/* If at least one address family activated for group, return 1. */
1359static inline int
1360peer_group_af_configured (struct peer_group *group)
1361{
1362 struct peer *peer = group->conf;
1363
1364 if (peer->afc[AFI_IP][SAFI_UNICAST]
1365 || peer->afc[AFI_IP][SAFI_MULTICAST]
1366 || peer->afc[AFI_IP][SAFI_MPLS_VPN]
1367 || peer->afc[AFI_IP6][SAFI_UNICAST]
1368 || peer->afc[AFI_IP6][SAFI_MULTICAST])
1369 return 1;
1370 return 0;
1371}
1372
3f9c7369
DS		 1373static inline char *
1374timestamp_string (time_t ts)
1375{
1376#ifdef HAVE_CLOCK_MONOTONIC
1377 time_t tbuf;
1378 tbuf = time(NULL) - (bgp_clock() - ts);
1379 return ctime(&tbuf);
1380#else
1381 return ctime(&ts);
1382#endif /* HAVE_CLOCK_MONOTONIC */
1383}
1384
1385static inline int
1386peer_established (struct peer *peer)
1387{
1388 if (peer->status == Established)
1389 return 1;
1390 return 0;
1391}
1392
f14e6fdb
DS		 1393static inline int
1394peer_dynamic_neighbor (struct peer *peer)
1395{
1396 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
1397}
1398
8a92a8a0
DS		 1399/*
1400 * Currently supporting RFC 5549 for AFI_IP/SAFI_UNICAST only.
1401 *
1402 * Note: When other RFC-5549 applicable SAFIs to be supported, that should
1403 * come as an argument to this routine.
1404 */
1405static inline int
1406peer_cap_enhe (struct peer *peer)
1407{
1408 return (CHECK_FLAG(peer->af_cap[AFI_IP][SAFI_UNICAST], PEER_CAP_ENHE_AF_NEGO));
1409}
1410
00d252cb 1411#endif /* _QUAGGA_BGPD_H */
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