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[mirror_frr.git] / bgpd / bgpd.h
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718e3744 1/* BGP message definition header.
2 Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3
4This file is part of GNU Zebra.
5
6GNU Zebra is free software; you can redistribute it and/or modify it
7under the terms of the GNU General Public License as published by the
8Free Software Foundation; either version 2, or (at your option) any
9later version.
10
11GNU Zebra is distributed in the hope that it will be useful, but
12WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GNU Zebra; see the file COPYING. If not, write to the Free
18Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1902111-1307, USA. */
20
00d252cb 21#ifndef _QUAGGA_BGPD_H
22#define _QUAGGA_BGPD_H
23
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
6410e93a 73#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
3f9c7369 74
718e3744 75/* BGP master for system wide configurations and variables. */
76struct bgp_master
77{
78 /* BGP instance list. */
79 struct list *bgp;
80
81 /* BGP thread master. */
82 struct thread_master *master;
83
200df115 84 /* work queues */
85 struct work_queue *process_main_queue;
86 struct work_queue *process_rsclient_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;
147
148 /* BGP peer group. */
149 struct list *group;
150
f14e6fdb
DS		 151 /* The maximum number of BGP dynamic neighbors that can be created */
152 int dynamic_neighbors_limit;
153
154 /* The current number of BGP dynamic neighbors */
155 int dynamic_neighbors_count;
156
fee0f4c6 157 /* BGP route-server-clients. */
158 struct list *rsclient;
159
3f9c7369
DS		 160 struct hash *update_groups[BGP_AF_MAX];
161
162 /*
163 * Global statistics for update groups.
164 */
165 struct {
166 u_int32_t join_events;
167 u_int32_t prune_events;
168 u_int32_t merge_events;
169 u_int32_t split_events;
170 u_int32_t updgrp_switch_events;
171 u_int32_t peer_refreshes_combined;
172 u_int32_t adj_count;
173 u_int32_t merge_checks_triggered;
174
175 u_int32_t updgrps_created;
176 u_int32_t updgrps_deleted;
177 u_int32_t subgrps_created;
178 u_int32_t subgrps_deleted;
179 } update_group_stats;
180
718e3744 181 /* BGP configuration. */
182 u_int16_t config;
183#define BGP_CONFIG_ROUTER_ID (1 << 0)
184#define BGP_CONFIG_CLUSTER_ID (1 << 1)
185#define BGP_CONFIG_CONFEDERATION (1 << 2)
718e3744 186
187 /* BGP router identifier. */
188 struct in_addr router_id;
18a6dce6 189 struct in_addr router_id_static;
718e3744 190
191 /* BGP route reflector cluster ID. */
192 struct in_addr cluster_id;
193
194 /* BGP confederation information. */
195 as_t confed_id;
196 as_t *confed_peers;
197 int confed_peers_cnt;
198
abc920f8
DS		 199 struct thread *t_startup; /* start-up timer on only once at the beginning */
200
201 u_int32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
202#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
203 u_int32_t maxmed_onstartup_value; /* Max-med value when active on start-up */
204 struct thread *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
205 u_char maxmed_onstartup_over; /* Flag to make it effective only once */
206
207 u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
208#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
209 u_int32_t maxmed_admin_value; /* Max-med value when administrative in on */
210#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
211
212 u_char maxmed_active; /* 1/0 if max-med is active or not */
213 u_int32_t maxmed_value; /* Max-med value when its active */
fe7d2a48 214
f188f2c4
DS		 215 /* BGP update delay on startup */
216 struct thread *t_update_delay;
217 struct thread *t_establish_wait;
218 u_char update_delay_over;
4a16ae86
DS		 219 u_char main_zebra_update_hold;
220 u_char main_peers_update_hold;
221 u_char rsclient_peers_update_hold;
f188f2c4
DS		 222 u_int16_t v_update_delay;
223 u_int16_t v_establish_wait;
224 char update_delay_begin_time[64];
225 char update_delay_end_time[64];
4a16ae86
DS		 226 char update_delay_zebra_resume_time[64];
227 char update_delay_peers_resume_time[64];
f188f2c4
DS		 228 u_int32_t established;
229 u_int32_t restarted_peers;
230 u_int32_t implicit_eors;
231 u_int32_t explicit_eors;
232#define BGP_UPDATE_DELAY_DEF 0
233#define BGP_UPDATE_DELAY_MIN 0
234#define BGP_UPDATE_DELAY_MAX 3600
235
718e3744 236 /* BGP flags. */
8bd9d948 237 u_int32_t flags;
718e3744 238#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
239#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
240#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
241#define BGP_FLAG_MED_CONFED (1 << 3)
242#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
243#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
244#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
245#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
246#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
247#define BGP_FLAG_IMPORT_CHECK (1 << 9)
248#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 249#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 250#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
6811845b 251#define BGP_FLAG_ASPATH_CONFED (1 << 13)
2fdd455c 252#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
8bd9d948 253#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
907f92c8 254#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
16fc1eec 255#define BGP_FLAG_MULTIPATH_RELAX_NO_AS_SET (1 << 17)
078430f6
DS		 256#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
257#define BGP_FLAG_IMPORT_CHECK_EXACT_MATCH (1 << 19)
6410e93a 258#define BGP_FLAG_SHOW_HOSTNAME (1 << 20)
718e3744 259
260 /* BGP Per AF flags */
261 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
262#define BGP_CONFIG_DAMPENING (1 << 0)
263
264 /* Static route configuration. */
265 struct bgp_table *route[AFI_MAX][SAFI_MAX];
266
267 /* Aggregate address configuration. */
268 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
269
270 /* BGP routing information base. */
271 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
272
73ac8160
DS		 273 /* BGP table route-map. */
274 struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
275
718e3744 276 /* BGP redistribute configuration. */
7c8ff89e 277 struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
718e3744 278
518f0eb1
DS		 279 /* timer to dampen route map changes */
280 struct thread *t_rmap_update; /* Handle route map updates */
281 u_int32_t rmap_update_timer; /* Route map update timer */
282#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
283
0de4848d
DS		 284 /* timer to re-evaluate neighbor default-originate route-maps */
285 struct thread *t_rmap_def_originate_eval;
286#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
287
718e3744 288 /* BGP distance configuration. */
289 u_char distance_ebgp;
290 u_char distance_ibgp;
291 u_char distance_local;
292
293 /* BGP default local-preference. */
294 u_int32_t default_local_pref;
295
3f9c7369
DS		 296 /* BGP default subgroup pkt queue max */
297 u_int32_t default_subgroup_pkt_queue_max;
298
718e3744 299 /* BGP default timer. */
300 u_int32_t default_holdtime;
301 u_int32_t default_keepalive;
538621f2 302
303 /* BGP graceful restart */
93406d87 304 u_int32_t restart_time;
305 u_int32_t stalepath_time;
165b5fff
JB		 306
307 /* Maximum-paths configuration */
308 struct bgp_maxpaths_cfg {
309 u_int16_t maxpaths_ebgp;
310 u_int16_t maxpaths_ibgp;
5e242b0d
DS		 311 u_int16_t ibgp_flags;
312#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
165b5fff 313 } maxpaths[AFI_MAX][SAFI_MAX];
cb1faec9
DS		 314
315 u_int32_t wpkt_quanta; /* per peer packet quanta to write */
3f9c7369 316 u_int32_t coalesce_time;
718e3744 317};
318
d889623f
DS		 319#define BGP_ROUTE_ADV_HOLD(bgp) \
320 (bgp->main_peers_update_hold || bgp->rsclient_peers_update_hold)
321
718e3744 322/* BGP peer-group support. */
323struct peer_group
324{
325 /* Name of the peer-group. */
326 char *name;
327
328 /* Pointer to BGP. */
329 struct bgp *bgp;
330
331 /* Peer-group client list. */
332 struct list *peer;
333
f14e6fdb
DS		 334 /** Dynamic neighbor listening ranges */
335 struct list *listen_range[AFI_MAX];
336
718e3744 337 /* Peer-group config */
338 struct peer *conf;
339};
340
341/* BGP Notify message format. */
342struct bgp_notify
343{
344 u_char code;
345 u_char subcode;
346 char *data;
347 bgp_size_t length;
348};
349
350/* Next hop self address. */
351struct bgp_nexthop
352{
353 struct interface *ifp;
354 struct in_addr v4;
355#ifdef HAVE_IPV6
356 struct in6_addr v6_global;
357 struct in6_addr v6_local;
358#endif /* HAVE_IPV6 */
359};
360
a82478b9
DS		 361/* BGP addpath values */
362#define BGP_ADDPATH_RX 1
363#define BGP_ADDPATH_TX 2
364#define BGP_ADDPATH_ID_LEN 4
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
fee0f4c6 374#define RMAP_IN 0
375#define RMAP_OUT 1
376#define RMAP_IMPORT 2
377#define RMAP_EXPORT 3
378#define RMAP_MAX 4
379
718e3744 380/* BGP filter structure. */
381struct bgp_filter
382{
383 /* Distribute-list. */
384 struct
385 {
386 char *name;
387 struct access_list *alist;
388 } dlist[FILTER_MAX];
389
390 /* Prefix-list. */
391 struct
392 {
393 char *name;
394 struct prefix_list *plist;
395 } plist[FILTER_MAX];
396
397 /* Filter-list. */
398 struct
399 {
400 char *name;
401 struct as_list *aslist;
402 } aslist[FILTER_MAX];
403
404 /* Route-map. */
405 struct
406 {
407 char *name;
408 struct route_map *map;
fee0f4c6 409 } map[RMAP_MAX];
718e3744 410
411 /* Unsuppress-map. */
412 struct
413 {
414 char *name;
415 struct route_map *map;
416 } usmap;
417};
418
6d85b15b
JBD		 419/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
420 a peer who's AS is part of our Confederation. */
421typedef enum
422{
423 BGP_PEER_IBGP = 1,
424 BGP_PEER_EBGP,
425 BGP_PEER_INTERNAL,
426 BGP_PEER_CONFED,
427} bgp_peer_sort_t;
428
d6661008
DS		 429/* BGP message header and packet size. */
430#define BGP_MARKER_SIZE 16
431#define BGP_HEADER_SIZE 19
432#define BGP_MAX_PACKET_SIZE 4096
0a91ff55 433#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
d6661008 434
3f9c7369
DS		 435/*
436 * Trigger delay for bgp_announce_route().
437 */
438#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
439#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
440
441struct peer_af
442{
443 /* back pointer to the peer */
444 struct peer *peer;
445
446 /* which subgroup the peer_af belongs to */
447 struct update_subgroup *subgroup;
448
449 /* for being part of an update subgroup's peer list */
450 LIST_ENTRY(peer_af) subgrp_train;
451
452 /* for being part of a packet's peer list */
453 LIST_ENTRY(peer_af) pkt_train;
454
455 struct bpacket *next_pkt_to_send;
456
457 /*
458 * Trigger timer for bgp_announce_route().
459 */
460 struct thread *t_announce_route;
461
462 afi_t afi;
463 safi_t safi;
464 int afid;
465};
466
718e3744 467/* BGP neighbor structure. */
468struct peer
469{
470 /* BGP structure. */
471 struct bgp *bgp;
472
200df115 473 /* reference count, primarily to allow bgp_process'ing of route_node's
474 * to be done after a struct peer is deleted.
475 *
476 * named 'lock' for hysterical reasons within Quagga.
477 */
478 int lock;
479
718e3744 480 /* BGP peer group. */
481 struct peer_group *group;
482 u_char af_group[AFI_MAX][SAFI_MAX];
3f9c7369
DS		 483 u_int64_t version[AFI_MAX][SAFI_MAX];
484
485 /* BGP peer_af structures, per configured AF on this peer */
486 struct peer_af *peer_af_array[BGP_AF_MAX];
718e3744 487
488 /* Peer's remote AS number. */
0299c004
DS		 489 int as_type;
490 as_t as;
718e3744 491
492 /* Peer's local AS number. */
493 as_t local_as;
494
6d85b15b
JBD		 495 bgp_peer_sort_t sort;
496
718e3744 497 /* Peer's Change local AS number. */
498 as_t change_local_as;
499
500 /* Remote router ID. */
501 struct in_addr remote_id;
502
503 /* Local router ID. */
504 struct in_addr local_id;
505
fee0f4c6 506 /* Peer specific RIB when configured as route-server-client. */
507 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
508
718e3744 509 /* Packet receive and send buffer. */
510 struct stream *ibuf;
511 struct stream_fifo *obuf;
512 struct stream *work;
513
8c71e481
PM		 514 /* We use a separate stream to encode MP_REACH_NLRI for efficient
515 * NLRI packing. peer->work stores all the other attributes. The
516 * actual packet is then constructed by concatenating the two.
517 */
518 struct stream *scratch;
519
1ff9a340
DS		 520 /* the doppelganger peer structure, due to dual TCP conn setup */
521 struct peer *doppelganger;
522
718e3744 523 /* Status of the peer. */
524 int status;
525 int ostatus;
526
6403814c
DS		 527 /* FSM events, stored for debug purposes.
528 * Note: uchar used for reduced memory usage.
529 */
530 unsigned char cur_event;
531 unsigned char last_event;
532 unsigned char last_major_event;
533
0b2aa3a0
PJ		 534 /* Peer index, used for dumping TABLE_DUMP_V2 format */
535 uint16_t table_dump_index;
536
718e3744 537 /* Peer information */
eb821189 538 int fd; /* File descriptor */
539 int ttl; /* TTL of TCP connection to the peer. */
fa411a21 540 int gtsm_hops; /* minimum hopcount to peer */
eb821189 541 char *desc; /* Description of the peer. */
542 unsigned short port; /* Destination port for peer */
543 char *host; /* Printable address of the peer. */
544 union sockunion su; /* Sockunion address of the peer. */
a80beece 545#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
eb821189 546 time_t uptime; /* Last Up/Down time */
547 time_t readtime; /* Last read time */
548 time_t resettime; /* Last reset time */
718e3744 549
eb821189 550 unsigned int ifindex; /* ifindex of the BGP connection. */
a80beece 551 char *conf_if; /* neighbor interface config name. */
eb821189 552 char *ifname; /* bind interface name. */
553 char *update_if;
554 union sockunion *update_source;
eb821189 555
556 union sockunion *su_local; /* Sockunion of local address. */
557 union sockunion *su_remote; /* Sockunion of remote address. */
558 int shared_network; /* Is this peer shared same network. */
559 struct bgp_nexthop nexthop; /* Nexthop */
718e3744 560
561 /* Peer address family configuration. */
562 u_char afc[AFI_MAX][SAFI_MAX];
563 u_char afc_nego[AFI_MAX][SAFI_MAX];
564 u_char afc_adv[AFI_MAX][SAFI_MAX];
565 u_char afc_recv[AFI_MAX][SAFI_MAX];
566
0a486e5f 567 /* Capability flags (reset in bgp_stop) */
6410e93a 568 u_int32_t cap;
718e3744 569#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
570#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
571#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
572#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
573#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 574#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
575#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
0b2aa3a0
PJ		 576#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
577#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
fe7d2a48
DS		 578#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
579#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
a82478b9
DS		 580#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
581#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
6410e93a
DS		 582#define PEER_CAP_HOSTNAME_ADV (1 << 13) /* hostname advertised */
583#define PEER_CAP_HOSTNAME_RCV (1 << 14) /* hostname received */
8a92a8a0
DS		 584#define PEER_CAP_ENHE_ADV (1 << 15) /* Extended nexthop advertised */
585#define PEER_CAP_ENHE_RCV (1 << 16) /* Extended nexthop received */
718e3744 586
0a486e5f 587 /* Capability flags (reset in bgp_stop) */
718e3744 588 u_int16_t af_cap[AFI_MAX][SAFI_MAX];
589#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
590#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
591#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
592#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
593#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
594#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 595#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
596#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
a82478b9
DS		 597#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
598#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
599#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
600#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
8a92a8a0
DS		 601#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
602#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
603#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
718e3744 604
605 /* Global configuration flags. */
606 u_int32_t flags;
607#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
608#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
609#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
610#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
611#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 612#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 613#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 614#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
9d3f9705 615#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
1ff9a340
DS		 616#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
617#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
d5a5c8f0 618#define PEER_FLAG_BFD (1 << 11) /* bfd */
3f9c7369 619#define PEER_FLAG_LONESOUL (1 << 12)
f14e6fdb 620#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 13) /* dynamic neighbor */
8a92a8a0 621#define PEER_FLAG_CAPABILITY_ENHE (1 << 14) /* Extended next-hop (rfc 5549)*/
718e3744 622
93406d87 623 /* NSF mode (graceful restart) */
624 u_char nsf[AFI_MAX][SAFI_MAX];
625
718e3744 626 /* Per AF configuration flags. */
627 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
628#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
629#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
630#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
631#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
632#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
633#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
634#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
635#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
636#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
637#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
638#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
639#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
640#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
641#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
642#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
643#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
0df7c91f 644#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
9e7a53c1 645#define PEER_FLAG_NEXTHOP_SELF_ALL (1 << 17) /* next-hop-self all */
5000f21c
DS		 646#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
647#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
c7122e14 648#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
0df7c91f
PJ		 649
650 /* MD5 password */
651 char *password;
718e3744 652
653 /* default-originate route-map. */
654 struct
655 {
656 char *name;
657 struct route_map *map;
658 } default_rmap[AFI_MAX][SAFI_MAX];
659
660 /* Peer status flags. */
661 u_int16_t sflags;
662#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
663#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
664#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
665#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
666#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 667#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
668#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 669
0a486e5f 670 /* Peer status af flags (reset in bgp_stop) */
718e3744 671 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
672#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
673#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
840fced9
DS		 674#define PEER_STATUS_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
675#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
676#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
677#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
e0701b79 678
718e3744 679 /* Default attribute value for the peer. */
680 u_int32_t config;
681#define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
682#define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
683#define PEER_CONFIG_CONNECT (1 << 2) /* connect */
684#define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
685 u_int32_t weight;
686 u_int32_t holdtime;
687 u_int32_t keepalive;
688 u_int32_t connect;
689 u_int32_t routeadv;
690
691 /* Timer values. */
692 u_int32_t v_start;
693 u_int32_t v_connect;
694 u_int32_t v_holdtime;
695 u_int32_t v_keepalive;
696 u_int32_t v_asorig;
697 u_int32_t v_routeadv;
0a486e5f 698 u_int32_t v_pmax_restart;
93406d87 699 u_int32_t v_gr_restart;
718e3744 700
701 /* Threads. */
702 struct thread *t_read;
703 struct thread *t_write;
704 struct thread *t_start;
705 struct thread *t_connect;
706 struct thread *t_holdtime;
707 struct thread *t_keepalive;
708 struct thread *t_asorig;
709 struct thread *t_routeadv;
0a486e5f 710 struct thread *t_pmax_restart;
93406d87 711 struct thread *t_gr_restart;
712 struct thread *t_gr_stale;
64e580a7
PJ		 713
714 /* workqueues */
715 struct work_queue *clear_node_queue;
716
718e3744 717 /* Statistics field */
718 u_int32_t open_in; /* Open message input count */
719 u_int32_t open_out; /* Open message output count */
720 u_int32_t update_in; /* Update message input count */
721 u_int32_t update_out; /* Update message ouput count */
722 time_t update_time; /* Update message received time. */
723 u_int32_t keepalive_in; /* Keepalive input count */
724 u_int32_t keepalive_out; /* Keepalive output count */
725 u_int32_t notify_in; /* Notify input count */
726 u_int32_t notify_out; /* Notify output count */
727 u_int32_t refresh_in; /* Route Refresh input count */
728 u_int32_t refresh_out; /* Route Refresh output count */
729 u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
730 u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
731
732 /* BGP state count */
733 u_int32_t established; /* Established */
734 u_int32_t dropped; /* Dropped */
735
f188f2c4
DS		 736 /* Update delay related fields */
737 u_char update_delay_over; /* When this is set, BGP is no more waiting for EOR */
738
718e3744 739 /* Syncronization list and time. */
740 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
741 time_t synctime;
cb1faec9 742 time_t last_write; /* timestamp when the last UPDATE msg was written */
718e3744 743
744 /* Send prefix count. */
745 unsigned long scount[AFI_MAX][SAFI_MAX];
746
747 /* Announcement attribute hash. */
748 struct hash *hash[AFI_MAX][SAFI_MAX];
749
750 /* Notify data. */
751 struct bgp_notify notify;
752
753 /* Whole packet size to be read. */
754 unsigned long packet_size;
755
756 /* Filter structure. */
757 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
758
759 /* ORF Prefix-list */
760 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
761
16286195
DS		 762 /* Text description of last attribute rcvd */
763 char rcvd_attr_str[BUFSIZ];
764
765 /* Track if we printed the attribute in debugs */
766 int rcvd_attr_printed;
767
718e3744 768 /* Prefix count. */
769 unsigned long pcount[AFI_MAX][SAFI_MAX];
770
771 /* Max prefix count. */
772 unsigned long pmax[AFI_MAX][SAFI_MAX];
e0701b79 773 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
0a486e5f 774 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 775#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 776
777 /* allowas-in. */
778 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 779
e0701b79 780 /* peer reset cause */
781 char last_reset;
782#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
783#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
784#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
785#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
786#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
787#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
788#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
789#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
790#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
791#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
792#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
793#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
794#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
795#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
796#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
797#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
798#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
799#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
800#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
801#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
802#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 803#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
d6661008
DS		 804unsigned long last_reset_cause_size;
805u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
e0701b79 806
ac41b2a2 807 /* The kind of route-map Flags.*/
808 u_char rmap_type;
809#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
810#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
811#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
812#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
813#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
814#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 815#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
816#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
6410e93a
DS		 817
818 /* hostname and domainname advertised by host */
819 char *hostname;
820 char *domainname;
c43ed2e4
DS		 821
822 /* peer specific BFD information */
823 void *bfd_info;
718e3744 824};
825
0df7c91f
PJ		 826#define PEER_PASSWORD_MINLEN (1)
827#define PEER_PASSWORD_MAXLEN (80)
828
718e3744 829/* This structure's member directly points incoming packet data
830 stream. */
831struct bgp_nlri
832{
833 /* AFI. */
834 afi_t afi;
835
836 /* SAFI. */
837 safi_t safi;
838
839 /* Pointer to NLRI byte stream. */
840 u_char *nlri;
841
842 /* Length of whole NLRI. */
843 bgp_size_t length;
844};
845
3f9c7369
DS		 846#define PEERAF_FOREACH(peer, paf, afi) \
847 for ((afi) = BGP_AF_START, (paf) = (peer)->peer_af_array[(afi)]; \
848 (afi) < BGP_AF_MAX; \
849 (afi)++, (paf) = (peer)->peer_af_array[(afi)]) \
850 if ((paf) != NULL) \
851
718e3744 852/* BGP versions. */
853#define BGP_VERSION_4 4
718e3744 854
855/* Default BGP port number. */
856#define BGP_PORT_DEFAULT 179
857
718e3744 858/* BGP minimum message size. */
859#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
860#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
861#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
862#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
863#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
864#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
865
866/* BGP message types. */
867#define BGP_MSG_OPEN 1
868#define BGP_MSG_UPDATE 2
869#define BGP_MSG_NOTIFY 3
870#define BGP_MSG_KEEPALIVE 4
871#define BGP_MSG_ROUTE_REFRESH_NEW 5
872#define BGP_MSG_CAPABILITY 6
873#define BGP_MSG_ROUTE_REFRESH_OLD 128
874
875/* BGP open optional parameter. */
876#define BGP_OPEN_OPT_AUTH 1
877#define BGP_OPEN_OPT_CAP 2
878
879/* BGP4 attribute type codes. */
880#define BGP_ATTR_ORIGIN 1
881#define BGP_ATTR_AS_PATH 2
882#define BGP_ATTR_NEXT_HOP 3
883#define BGP_ATTR_MULTI_EXIT_DISC 4
884#define BGP_ATTR_LOCAL_PREF 5
885#define BGP_ATTR_ATOMIC_AGGREGATE 6
886#define BGP_ATTR_AGGREGATOR 7
887#define BGP_ATTR_COMMUNITIES 8
888#define BGP_ATTR_ORIGINATOR_ID 9
889#define BGP_ATTR_CLUSTER_LIST 10
890#define BGP_ATTR_DPA 11
891#define BGP_ATTR_ADVERTISER 12
892#define BGP_ATTR_RCID_PATH 13
893#define BGP_ATTR_MP_REACH_NLRI 14
894#define BGP_ATTR_MP_UNREACH_NLRI 15
895#define BGP_ATTR_EXT_COMMUNITIES 16
0b2aa3a0
PJ		 896#define BGP_ATTR_AS4_PATH 17
897#define BGP_ATTR_AS4_AGGREGATOR 18
41367172 898#define BGP_ATTR_AS_PATHLIMIT 21
718e3744 899
900/* BGP update origin. */
901#define BGP_ORIGIN_IGP 0
902#define BGP_ORIGIN_EGP 1
903#define BGP_ORIGIN_INCOMPLETE 2
904
905/* BGP notify message codes. */
906#define BGP_NOTIFY_HEADER_ERR 1
907#define BGP_NOTIFY_OPEN_ERR 2
908#define BGP_NOTIFY_UPDATE_ERR 3
909#define BGP_NOTIFY_HOLD_ERR 4
910#define BGP_NOTIFY_FSM_ERR 5
911#define BGP_NOTIFY_CEASE 6
912#define BGP_NOTIFY_CAPABILITY_ERR 7
913#define BGP_NOTIFY_MAX 8
914
4b4e07d2
DT		 915#define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
916
718e3744 917/* BGP_NOTIFY_HEADER_ERR sub codes. */
918#define BGP_NOTIFY_HEADER_NOT_SYNC 1
919#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
920#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
921#define BGP_NOTIFY_HEADER_MAX 4
922
923/* BGP_NOTIFY_OPEN_ERR sub codes. */
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
718e3744 994#define BGP_ERROR_START_TIMER 30
995#define BGP_DEFAULT_HOLDTIME 180
996#define BGP_DEFAULT_KEEPALIVE 60
997#define BGP_DEFAULT_ASORIGINATE 15
998#define BGP_DEFAULT_EBGP_ROUTEADV 30
999#define BGP_DEFAULT_IBGP_ROUTEADV 5
718e3744 1000#define BGP_DEFAULT_CONNECT_RETRY 120
1001
1002/* BGP default local preference. */
1003#define BGP_DEFAULT_LOCAL_PREF 100
1004
3f9c7369
DS		 1005/* BGP default subgroup packet queue max . */
1006#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
1007
538621f2 1008/* BGP graceful restart */
1009#define BGP_DEFAULT_RESTART_TIME 120
1010#define BGP_DEFAULT_STALEPATH_TIME 360
1011
42e6d745
DO		 1012/* RFC4364 */
1013#define SAFI_MPLS_LABELED_VPN 128
718e3744 1014
1015/* Max TTL value. */
1016#define TTL_MAX 255
1017
1018/* BGP uptime string length. */
1019#define BGP_UPTIME_LEN 25
1020
1021/* Default configuration settings for bgpd. */
1022#define BGP_VTY_PORT 2605
718e3744 1023#define BGP_DEFAULT_CONFIG "bgpd.conf"
1024
1025/* Check AS path loop when we send NLRI. */
1026/* #define BGP_SEND_ASPATH_CHECK */
1027
f14e6fdb
DS		 1028/* BGP Dynamic Neighbors feature */
1029#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
1030#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
1031#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
1032
718e3744 1033/* Flag for peer_clear_soft(). */
1034enum bgp_clear_type
1035{
1036 BGP_CLEAR_SOFT_NONE,
1037 BGP_CLEAR_SOFT_OUT,
1038 BGP_CLEAR_SOFT_IN,
1039 BGP_CLEAR_SOFT_BOTH,
fee0f4c6 1040 BGP_CLEAR_SOFT_IN_ORF_PREFIX,
1041 BGP_CLEAR_SOFT_RSCLIENT
718e3744 1042};
1043
1044/* Macros. */
1045#define BGP_INPUT(P) ((P)->ibuf)
1046#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
6aa136f1
VS		 1047#define BGP_IS_VALID_STATE_FOR_NOTIF(S)\
1048 (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
718e3744 1049
718e3744 1050/* Count prefix size from mask length */
1051#define PSIZE(a) (((a) + 7) / (8))
1052
1053/* BGP error codes. */
1054#define BGP_SUCCESS 0
1055#define BGP_ERR_INVALID_VALUE -1
1056#define BGP_ERR_INVALID_FLAG -2
1057#define BGP_ERR_INVALID_AS -3
1058#define BGP_ERR_INVALID_BGP -4
1059#define BGP_ERR_PEER_GROUP_MEMBER -5
1060#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
1061#define BGP_ERR_PEER_GROUP_MEMBER_EXISTS -7
1062#define BGP_ERR_PEER_BELONGS_TO_GROUP -8
1063#define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED -9
1064#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -10
1065#define BGP_ERR_PEER_GROUP_CANT_CHANGE -11
1066#define BGP_ERR_PEER_GROUP_MISMATCH -12
1067#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -13
1068#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -14
1069#define BGP_ERR_AS_MISMATCH -15
1070#define BGP_ERR_PEER_INACTIVE -16
1071#define BGP_ERR_INVALID_FOR_PEER_GROUP_MEMBER -17
1072#define BGP_ERR_PEER_GROUP_HAS_THE_FLAG -18
1073#define BGP_ERR_PEER_FLAG_CONFLICT -19
1074#define BGP_ERR_PEER_GROUP_SHUTDOWN -20
1075#define BGP_ERR_PEER_FILTER_CONFLICT -21
1076#define BGP_ERR_NOT_INTERNAL_PEER -22
1077#define BGP_ERR_REMOVE_PRIVATE_AS -23
1078#define BGP_ERR_AF_UNCONFIGURED -24
1079#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -25
1080#define BGP_ERR_INSTANCE_MISMATCH -26
1081#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -27
1082#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -28
0df7c91f 1083#define BGP_ERR_TCPSIG_FAILED -29
fa411a21 1084#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -30
f5a4827d 1085#define BGP_ERR_NO_IBGP_WITH_TTLHACK -31
a80beece 1086#define BGP_ERR_NO_INTERFACE_CONFIG -32
9d3f9705 1087#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -33
c7122e14 1088#define BGP_ERR_AS_OVERRIDE -34
f14e6fdb
DS		 1089#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -35
1090#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -36
1091#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -37
1092#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -38
1093#define BGP_ERR_MAX -39
718e3744 1094
3f9c7369
DS		 1095/*
1096 * Enumeration of different policy kinds a peer can be configured with.
1097 */
1098typedef enum
1099{
1100 BGP_POLICY_ROUTE_MAP,
1101 BGP_POLICY_FILTER_LIST,
1102 BGP_POLICY_PREFIX_LIST,
1103 BGP_POLICY_DISTRIBUTE_LIST,
1104} bgp_policy_type_e;
1105
718e3744 1106extern struct bgp_master *bm;
1107
1108extern struct thread_master *master;
1109
1110/* Prototypes. */
94f2b392 1111extern void bgp_terminate (void);
1112extern void bgp_reset (void);
65957886 1113extern time_t bgp_clock (void);
94f2b392 1114extern void bgp_zclient_reset (void);
1115extern int bgp_nexthop_set (union sockunion *, union sockunion *,
718e3744 1116 struct bgp_nexthop *, struct peer *);
94f2b392 1117extern struct bgp *bgp_get_default (void);
1118extern struct bgp *bgp_lookup (as_t, const char *);
1119extern struct bgp *bgp_lookup_by_name (const char *);
1120extern struct peer *peer_lookup (struct bgp *, union sockunion *);
a80beece 1121extern struct peer *peer_lookup_by_conf_if (struct bgp *, const char *);
6410e93a 1122extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
a80beece
DS		 1123extern struct peer *peer_conf_interface_get(struct bgp *, const char *, afi_t,
1124 safi_t);
1125extern void bgp_peer_conf_if_to_su_update (struct peer *);
ffd0c037 1126extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
94f2b392 1127extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
1128extern struct peer_group *peer_group_get (struct bgp *, const char *);
f14e6fdb
DS		 1129extern struct peer *peer_create_bind_dynamic_neighbor (struct bgp *,
1130 union sockunion *, struct peer_group *);
1131extern struct prefix *peer_group_lookup_dynamic_neighbor_range (
1132 struct peer_group *, struct prefix *);
1133extern struct peer_group *peer_group_lookup_dynamic_neighbor (struct bgp *,
1134 struct prefix *, struct prefix **);
1135extern struct peer *peer_lookup_dynamic_neighbor (struct bgp *,
1136 union sockunion *);
1137extern void peer_drop_dynamic_neighbor (struct peer *);
200df115 1138extern struct peer *peer_lock (struct peer *);
1139extern struct peer *peer_unlock (struct peer *);
6d85b15b 1140extern bgp_peer_sort_t peer_sort (struct peer *peer);
94f2b392 1141extern int peer_active (struct peer *);
1142extern int peer_active_nego (struct peer *);
a80beece 1143extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
0299c004 1144 as_t, as_t, int, afi_t, safi_t);
94f2b392 1145extern struct peer *peer_create_accept (struct bgp *);
1ff9a340 1146extern void peer_xfer_config (struct peer *dst, struct peer *src);
94f2b392 1147extern char *peer_uptime (time_t, char *, size_t);
1148extern int bgp_config_write (struct vty *);
1149extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
6b0655a2 1150
94f2b392 1151extern void bgp_master_init (void);
718e3744 1152
94f2b392 1153extern void bgp_init (void);
1154extern void bgp_route_map_init (void);
718e3744 1155
94f2b392 1156extern int bgp_option_set (int);
1157extern int bgp_option_unset (int);
1158extern int bgp_option_check (int);
718e3744 1159
94f2b392 1160extern int bgp_get (struct bgp **, as_t *, const char *);
1161extern int bgp_delete (struct bgp *);
718e3744 1162
94f2b392 1163extern int bgp_flag_set (struct bgp *, int);
1164extern int bgp_flag_unset (struct bgp *, int);
1165extern int bgp_flag_check (struct bgp *, int);
718e3744 1166
0088b5dc
SH		 1167extern void bgp_lock (struct bgp *);
1168extern void bgp_unlock (struct bgp *);
1169
94f2b392 1170extern int bgp_router_id_set (struct bgp *, struct in_addr *);
718e3744 1171
94f2b392 1172extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
1173extern int bgp_cluster_id_unset (struct bgp *);
718e3744 1174
94f2b392 1175extern int bgp_confederation_id_set (struct bgp *, as_t);
1176extern int bgp_confederation_id_unset (struct bgp *);
1177extern int bgp_confederation_peers_check (struct bgp *, as_t);
718e3744 1178
94f2b392 1179extern int bgp_confederation_peers_add (struct bgp *, as_t);
1180extern int bgp_confederation_peers_remove (struct bgp *, as_t);
718e3744 1181
94f2b392 1182extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
1183extern int bgp_timers_unset (struct bgp *);
718e3744 1184
94f2b392 1185extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
1186extern int bgp_default_local_preference_unset (struct bgp *);
718e3744 1187
3f9c7369
DS		 1188extern int bgp_default_subgroup_pkt_queue_max_set (struct bgp *bgp, u_int32_t);
1189extern int bgp_default_subgroup_pkt_queue_max_unset (struct bgp *bgp);
1190
f14e6fdb
DS		 1191extern int bgp_listen_limit_set (struct bgp *, int);
1192extern int bgp_listen_limit_unset (struct bgp *);
1193
f188f2c4
DS		 1194extern int bgp_update_delay_active (struct bgp *);
1195extern int bgp_update_delay_configured (struct bgp *);
94f2b392 1196extern int peer_rsclient_active (struct peer *);
0299c004 1197extern void peer_as_change (struct peer *, as_t, int);
a80beece 1198extern int peer_remote_as (struct bgp *, union sockunion *,const char *, as_t *,
0299c004
DS		 1199 int, afi_t, safi_t);
1200extern int peer_group_remote_as (struct bgp *, const char *, as_t *, int);
94f2b392 1201extern int peer_delete (struct peer *peer);
1202extern int peer_group_delete (struct peer_group *);
1203extern int peer_group_remote_as_delete (struct peer_group *);
f14e6fdb 1204extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
718e3744 1205
94f2b392 1206extern int peer_activate (struct peer *, afi_t, safi_t);
1207extern int peer_deactivate (struct peer *, afi_t, safi_t);
718e3744 1208
a80beece
DS		 1209extern int peer_group_bind (struct bgp *, union sockunion *, struct peer *,
1210 struct peer_group *, afi_t, safi_t, as_t *);
94f2b392 1211extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
718e3744 1212 afi_t, safi_t);
1213
94f2b392 1214extern int peer_flag_set (struct peer *, u_int32_t);
1215extern int peer_flag_unset (struct peer *, u_int32_t);
718e3744 1216
94f2b392 1217extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
1218extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
1219extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
718e3744 1220
94f2b392 1221extern int peer_ebgp_multihop_set (struct peer *, int);
1222extern int peer_ebgp_multihop_unset (struct peer *);
c43ed2e4 1223extern int is_ebgp_multihop_configured (struct peer *peer);
718e3744 1224
94f2b392 1225extern int peer_description_set (struct peer *, char *);
1226extern int peer_description_unset (struct peer *);
718e3744 1227
94f2b392 1228extern int peer_update_source_if_set (struct peer *, const char *);
1229extern int peer_update_source_addr_set (struct peer *, union sockunion *);
1230extern int peer_update_source_unset (struct peer *);
718e3744 1231
94f2b392 1232extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
1233extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
718e3744 1234
94f2b392 1235extern int peer_port_set (struct peer *, u_int16_t);
1236extern int peer_port_unset (struct peer *);
718e3744 1237
ffd0c037
DS		 1238extern void peer_weight_set (struct peer *, u_int16_t);
1239extern void peer_weight_unset (struct peer *);
718e3744 1240
94f2b392 1241extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
1242extern int peer_timers_unset (struct peer *);
718e3744 1243
94f2b392 1244extern int peer_timers_connect_set (struct peer *, u_int32_t);
1245extern int peer_timers_connect_unset (struct peer *);
718e3744 1246
94f2b392 1247extern int peer_advertise_interval_set (struct peer *, u_int32_t);
1248extern int peer_advertise_interval_unset (struct peer *);
718e3744 1249
ffd0c037
DS		 1250extern void peer_interface_set (struct peer *, const char *);
1251extern void peer_interface_unset (struct peer *);
718e3744 1252
94f2b392 1253extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
1254extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
718e3744 1255
94f2b392 1256extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
1257extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
718e3744 1258
9d3f9705 1259extern int peer_local_as_set (struct peer *, as_t, int, int);
94f2b392 1260extern int peer_local_as_unset (struct peer *);
718e3744 1261
94f2b392 1262extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
1263extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
718e3744 1264
94f2b392 1265extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
1266extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
718e3744 1267
94f2b392 1268extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
1269extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
718e3744 1270
94f2b392 1271extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
0df7c91f
PJ		 1272
1273extern int peer_password_set (struct peer *, const char *);
1274extern int peer_password_unset (struct peer *);
1275
94f2b392 1276extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
718e3744 1277
94f2b392 1278extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
1279extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
718e3744 1280
1ff9a340 1281extern int peer_clear (struct peer *, struct listnode **);
94f2b392 1282extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 1283
fa411a21
NH		 1284extern int peer_ttl_security_hops_set (struct peer *, int);
1285extern int peer_ttl_security_hops_unset (struct peer *);
1286
518f0eb1
DS		 1287extern int bgp_route_map_update_timer (struct thread *thread);
1288extern void bgp_route_map_terminate(void);
16286195
DS		 1289
1290extern int peer_cmp (struct peer *p1, struct peer *p2);
3f9c7369
DS		 1291
1292extern struct peer_af * peer_af_create (struct peer *, afi_t, safi_t);
1293extern struct peer_af * peer_af_find (struct peer *, afi_t, safi_t);
1294extern int peer_af_delete (struct peer *, afi_t, safi_t);
1295
ffd0c037
DS		 1296extern void bgp_scan_finish(void);
1297extern void bgp_close(void);
1298
3f9c7369
DS		 1299static inline int
1300afindex (afi_t afi, safi_t safi)
1301{
1302 switch (afi)
1303 {
1304 case AFI_IP:
1305 switch (safi)
1306 {
1307 case SAFI_UNICAST:
1308 return BGP_AF_IPV4_UNICAST;
1309 break;
1310 case SAFI_MULTICAST:
1311 return BGP_AF_IPV4_MULTICAST;
1312 break;
1313 case SAFI_MPLS_VPN:
1314 return BGP_AF_IPV4_VPN;
1315 break;
1316 default:
1317 return BGP_AF_MAX;
1318 break;
1319 }
1320 break;
1321 case AFI_IP6:
1322 switch (safi)
1323 {
1324 case SAFI_UNICAST:
1325 return BGP_AF_IPV6_UNICAST;
1326 break;
1327 case SAFI_MULTICAST:
1328 return BGP_AF_IPV6_MULTICAST;
1329 break;
1330 default:
1331 return BGP_AF_MAX;
1332 break;
1333 }
1334 break;
1335 default:
1336 return BGP_AF_MAX;
1337 break;
1338 }
1339}
1340
1341/* If peer is configured at least one address family return 1. */
1342static inline int
1343peer_group_active (struct peer *peer)
1344{
1345 if (peer->af_group[AFI_IP][SAFI_UNICAST]
1346 || peer->af_group[AFI_IP][SAFI_MULTICAST]
1347 || peer->af_group[AFI_IP][SAFI_MPLS_VPN]
1348 || peer->af_group[AFI_IP6][SAFI_UNICAST]
1349 || peer->af_group[AFI_IP6][SAFI_MULTICAST])
1350 return 1;
1351 return 0;
1352}
1353
1354/* If peer is negotiated at least one address family return 1. */
1355static inline int
1356peer_afi_active_nego (const struct peer *peer, afi_t afi)
1357{
1358 if (peer->afc_nego[afi][SAFI_UNICAST]
1359 || peer->afc_nego[afi][SAFI_MULTICAST]
1360 || peer->afc_nego[afi][SAFI_MPLS_VPN])
1361 return 1;
1362 return 0;
1363}
1364
f14e6fdb
DS		 1365/* If at least one address family activated for group, return 1. */
1366static inline int
1367peer_group_af_configured (struct peer_group *group)
1368{
1369 struct peer *peer = group->conf;
1370
1371 if (peer->afc[AFI_IP][SAFI_UNICAST]
1372 || peer->afc[AFI_IP][SAFI_MULTICAST]
1373 || peer->afc[AFI_IP][SAFI_MPLS_VPN]
1374 || peer->afc[AFI_IP6][SAFI_UNICAST]
1375 || peer->afc[AFI_IP6][SAFI_MULTICAST])
1376 return 1;
1377 return 0;
1378}
1379
3f9c7369
DS		 1380static inline char *
1381timestamp_string (time_t ts)
1382{
1383#ifdef HAVE_CLOCK_MONOTONIC
1384 time_t tbuf;
1385 tbuf = time(NULL) - (bgp_clock() - ts);
1386 return ctime(&tbuf);
1387#else
1388 return ctime(&ts);
1389#endif /* HAVE_CLOCK_MONOTONIC */
1390}
1391
1392static inline int
1393peer_established (struct peer *peer)
1394{
1395 if (peer->status == Established)
1396 return 1;
1397 return 0;
1398}
1399
f14e6fdb
DS		 1400static inline int
1401peer_dynamic_neighbor (struct peer *peer)
1402{
1403 return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
1404}
1405
8a92a8a0
DS		 1406/*
1407 * Currently supporting RFC 5549 for AFI_IP/SAFI_UNICAST only.
1408 *
1409 * Note: When other RFC-5549 applicable SAFIs to be supported, that should
1410 * come as an argument to this routine.
1411 */
1412static inline int
1413peer_cap_enhe (struct peer *peer)
1414{
1415 return (CHECK_FLAG(peer->af_cap[AFI_IP][SAFI_UNICAST], PEER_CAP_ENHE_AF_NEGO));
1416}
1417
00d252cb 1418#endif /* _QUAGGA_BGPD_H */
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