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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
21/* For union sockunion. */
22#include "sockunion.h"
23
24/* Typedef BGP specific types. */
25typedef u_int16_t as_t;
26typedef u_int16_t bgp_size_t;
27
28/* BGP master for system wide configurations and variables. */
29struct bgp_master
30{
31 /* BGP instance list. */
32 struct list *bgp;
33
34 /* BGP thread master. */
35 struct thread_master *master;
36
37 /* BGP port number. */
38 u_int16_t port;
39
40 /* BGP start time. */
41 time_t start_time;
42
43 /* Various BGP global configuration. */
44 u_char options;
45#define BGP_OPT_NO_FIB (1 << 0)
46#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
47#define BGP_OPT_CONFIG_CISCO (1 << 2)
48};
49
50/* BGP instance structure. */
51struct bgp
52{
53 /* AS number of this BGP instance. */
54 as_t as;
55
56 /* Name of this BGP instance. */
57 char *name;
58
59 /* Self peer. */
60 struct peer *peer_self;
61
62 /* BGP peer. */
63 struct list *peer;
64
65 /* BGP peer group. */
66 struct list *group;
67
fee0f4c6 68 /* BGP route-server-clients. */
69 struct list *rsclient;
70
718e3744 71 /* BGP configuration. */
72 u_int16_t config;
73#define BGP_CONFIG_ROUTER_ID (1 << 0)
74#define BGP_CONFIG_CLUSTER_ID (1 << 1)
75#define BGP_CONFIG_CONFEDERATION (1 << 2)
718e3744 76
77 /* BGP router identifier. */
78 struct in_addr router_id;
18a6dce6 79 struct in_addr router_id_static;
718e3744 80
81 /* BGP route reflector cluster ID. */
82 struct in_addr cluster_id;
83
84 /* BGP confederation information. */
85 as_t confed_id;
86 as_t *confed_peers;
87 int confed_peers_cnt;
88
89 /* BGP flags. */
90 u_int16_t flags;
91#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
92#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
93#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
94#define BGP_FLAG_MED_CONFED (1 << 3)
95#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
96#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
97#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
98#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
99#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
100#define BGP_FLAG_IMPORT_CHECK (1 << 9)
101#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
848973c7 102#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
538621f2 103#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
718e3744 104
105 /* BGP Per AF flags */
106 u_int16_t af_flags[AFI_MAX][SAFI_MAX];
107#define BGP_CONFIG_DAMPENING (1 << 0)
108
109 /* Static route configuration. */
110 struct bgp_table *route[AFI_MAX][SAFI_MAX];
111
112 /* Aggregate address configuration. */
113 struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
114
115 /* BGP routing information base. */
116 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
117
118 /* BGP redistribute configuration. */
119 u_char redist[AFI_MAX][ZEBRA_ROUTE_MAX];
120
121 /* BGP redistribute metric configuration. */
122 u_char redist_metric_flag[AFI_MAX][ZEBRA_ROUTE_MAX];
123 u_int32_t redist_metric[AFI_MAX][ZEBRA_ROUTE_MAX];
124
125 /* BGP redistribute route-map. */
126 struct
127 {
128 char *name;
129 struct route_map *map;
130 } rmap[AFI_MAX][ZEBRA_ROUTE_MAX];
131
132 /* BGP distance configuration. */
133 u_char distance_ebgp;
134 u_char distance_ibgp;
135 u_char distance_local;
136
137 /* BGP default local-preference. */
138 u_int32_t default_local_pref;
139
140 /* BGP default timer. */
141 u_int32_t default_holdtime;
142 u_int32_t default_keepalive;
538621f2 143
144 /* BGP graceful restart */
93406d87 145 u_int32_t restart_time;
146 u_int32_t stalepath_time;
718e3744 147};
148
149/* BGP peer-group support. */
150struct peer_group
151{
152 /* Name of the peer-group. */
153 char *name;
154
155 /* Pointer to BGP. */
156 struct bgp *bgp;
157
158 /* Peer-group client list. */
159 struct list *peer;
160
161 /* Peer-group config */
162 struct peer *conf;
163};
164
165/* BGP Notify message format. */
166struct bgp_notify
167{
168 u_char code;
169 u_char subcode;
170 char *data;
171 bgp_size_t length;
172};
173
174/* Next hop self address. */
175struct bgp_nexthop
176{
177 struct interface *ifp;
178 struct in_addr v4;
179#ifdef HAVE_IPV6
180 struct in6_addr v6_global;
181 struct in6_addr v6_local;
182#endif /* HAVE_IPV6 */
183};
184
185/* BGP router distinguisher value. */
186#define BGP_RD_SIZE 8
187
188struct bgp_rd
189{
190 u_char val[BGP_RD_SIZE];
191};
192
fee0f4c6 193#define RMAP_IN 0
194#define RMAP_OUT 1
195#define RMAP_IMPORT 2
196#define RMAP_EXPORT 3
197#define RMAP_MAX 4
198
718e3744 199/* BGP filter structure. */
200struct bgp_filter
201{
202 /* Distribute-list. */
203 struct
204 {
205 char *name;
206 struct access_list *alist;
207 } dlist[FILTER_MAX];
208
209 /* Prefix-list. */
210 struct
211 {
212 char *name;
213 struct prefix_list *plist;
214 } plist[FILTER_MAX];
215
216 /* Filter-list. */
217 struct
218 {
219 char *name;
220 struct as_list *aslist;
221 } aslist[FILTER_MAX];
222
223 /* Route-map. */
224 struct
225 {
226 char *name;
227 struct route_map *map;
fee0f4c6 228 } map[RMAP_MAX];
718e3744 229
230 /* Unsuppress-map. */
231 struct
232 {
233 char *name;
234 struct route_map *map;
235 } usmap;
236};
237
238/* BGP neighbor structure. */
239struct peer
240{
241 /* BGP structure. */
242 struct bgp *bgp;
243
244 /* BGP peer group. */
245 struct peer_group *group;
246 u_char af_group[AFI_MAX][SAFI_MAX];
247
248 /* Peer's remote AS number. */
249 as_t as;
250
251 /* Peer's local AS number. */
252 as_t local_as;
253
254 /* Peer's Change local AS number. */
255 as_t change_local_as;
256
257 /* Remote router ID. */
258 struct in_addr remote_id;
259
260 /* Local router ID. */
261 struct in_addr local_id;
262
fee0f4c6 263 /* Peer specific RIB when configured as route-server-client. */
264 struct bgp_table *rib[AFI_MAX][SAFI_MAX];
265
718e3744 266 /* Packet receive and send buffer. */
267 struct stream *ibuf;
268 struct stream_fifo *obuf;
269 struct stream *work;
270
271 /* Status of the peer. */
272 int status;
273 int ostatus;
274
275 /* Peer information */
eb821189 276 int fd; /* File descriptor */
277 int ttl; /* TTL of TCP connection to the peer. */
278 char *desc; /* Description of the peer. */
279 unsigned short port; /* Destination port for peer */
280 char *host; /* Printable address of the peer. */
281 union sockunion su; /* Sockunion address of the peer. */
282 time_t uptime; /* Last Up/Down time */
283 time_t readtime; /* Last read time */
284 time_t resettime; /* Last reset time */
718e3744 285
eb821189 286 unsigned int ifindex; /* ifindex of the BGP connection. */
287 char *ifname; /* bind interface name. */
288 char *update_if;
289 union sockunion *update_source;
290 struct zlog *log;
eb821189 291
292 union sockunion *su_local; /* Sockunion of local address. */
293 union sockunion *su_remote; /* Sockunion of remote address. */
294 int shared_network; /* Is this peer shared same network. */
295 struct bgp_nexthop nexthop; /* Nexthop */
718e3744 296
297 /* Peer address family configuration. */
298 u_char afc[AFI_MAX][SAFI_MAX];
299 u_char afc_nego[AFI_MAX][SAFI_MAX];
300 u_char afc_adv[AFI_MAX][SAFI_MAX];
301 u_char afc_recv[AFI_MAX][SAFI_MAX];
302
0a486e5f 303 /* Capability flags (reset in bgp_stop) */
718e3744 304 u_char cap;
305#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
306#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
307#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
308#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
309#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
538621f2 310#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
311#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
718e3744 312
0a486e5f 313 /* Capability flags (reset in bgp_stop) */
718e3744 314 u_int16_t af_cap[AFI_MAX][SAFI_MAX];
315#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
316#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
317#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
318#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
319#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
320#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
93406d87 321#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
322#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
718e3744 323
324 /* Global configuration flags. */
325 u_int32_t flags;
326#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
327#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
328#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
329#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
330#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
c9502438 331#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
6ffd2079 332#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
c9502438 333#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
718e3744 334
93406d87 335 /* NSF mode (graceful restart) */
336 u_char nsf[AFI_MAX][SAFI_MAX];
337
718e3744 338 /* Per AF configuration flags. */
339 u_int32_t af_flags[AFI_MAX][SAFI_MAX];
340#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
341#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
342#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
343#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
344#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
345#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
346#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
347#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
348#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
349#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
350#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
351#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
352#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
353#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
354#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
355#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
fee0f4c6 356#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
718e3744 357
358 /* default-originate route-map. */
359 struct
360 {
361 char *name;
362 struct route_map *map;
363 } default_rmap[AFI_MAX][SAFI_MAX];
364
365 /* Peer status flags. */
366 u_int16_t sflags;
367#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
368#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
369#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
370#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
371#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
93406d87 372#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
373#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
718e3744 374
0a486e5f 375 /* Peer status af flags (reset in bgp_stop) */
718e3744 376 u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
377#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
378#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
379#define PEER_STATUS_DEFAULT_ORIGINATE (1 << 2) /* default-originate peer */
e0701b79 380#define PEER_STATUS_PREFIX_THRESHOLD (1 << 3) /* exceed prefix-threshold */
381#define PEER_STATUS_PREFIX_LIMIT (1 << 4) /* exceed prefix-limit */
93406d87 382#define PEER_STATUS_EOR_SEND (1 << 5) /* end-of-rib send to peer */
383#define PEER_STATUS_EOR_RECEIVED (1 << 6) /* end-of-rib received from peer */
e0701b79 384
718e3744 385
386 /* Default attribute value for the peer. */
387 u_int32_t config;
388#define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
389#define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
390#define PEER_CONFIG_CONNECT (1 << 2) /* connect */
391#define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
392 u_int32_t weight;
393 u_int32_t holdtime;
394 u_int32_t keepalive;
395 u_int32_t connect;
396 u_int32_t routeadv;
397
398 /* Timer values. */
399 u_int32_t v_start;
400 u_int32_t v_connect;
401 u_int32_t v_holdtime;
402 u_int32_t v_keepalive;
403 u_int32_t v_asorig;
404 u_int32_t v_routeadv;
0a486e5f 405 u_int32_t v_pmax_restart;
93406d87 406 u_int32_t v_gr_restart;
718e3744 407
408 /* Threads. */
409 struct thread *t_read;
410 struct thread *t_write;
411 struct thread *t_start;
412 struct thread *t_connect;
413 struct thread *t_holdtime;
414 struct thread *t_keepalive;
415 struct thread *t_asorig;
416 struct thread *t_routeadv;
0a486e5f 417 struct thread *t_pmax_restart;
93406d87 418 struct thread *t_gr_restart;
419 struct thread *t_gr_stale;
718e3744 420
421 /* Statistics field */
422 u_int32_t open_in; /* Open message input count */
423 u_int32_t open_out; /* Open message output count */
424 u_int32_t update_in; /* Update message input count */
425 u_int32_t update_out; /* Update message ouput count */
426 time_t update_time; /* Update message received time. */
427 u_int32_t keepalive_in; /* Keepalive input count */
428 u_int32_t keepalive_out; /* Keepalive output count */
429 u_int32_t notify_in; /* Notify input count */
430 u_int32_t notify_out; /* Notify output count */
431 u_int32_t refresh_in; /* Route Refresh input count */
432 u_int32_t refresh_out; /* Route Refresh output count */
433 u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
434 u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
435
436 /* BGP state count */
437 u_int32_t established; /* Established */
438 u_int32_t dropped; /* Dropped */
439
440 /* Syncronization list and time. */
441 struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
442 time_t synctime;
443
444 /* Send prefix count. */
445 unsigned long scount[AFI_MAX][SAFI_MAX];
446
447 /* Announcement attribute hash. */
448 struct hash *hash[AFI_MAX][SAFI_MAX];
449
450 /* Notify data. */
451 struct bgp_notify notify;
452
453 /* Whole packet size to be read. */
454 unsigned long packet_size;
455
456 /* Filter structure. */
457 struct bgp_filter filter[AFI_MAX][SAFI_MAX];
458
459 /* ORF Prefix-list */
460 struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
461
462 /* Prefix count. */
463 unsigned long pcount[AFI_MAX][SAFI_MAX];
464
465 /* Max prefix count. */
466 unsigned long pmax[AFI_MAX][SAFI_MAX];
e0701b79 467 u_char pmax_threshold[AFI_MAX][SAFI_MAX];
0a486e5f 468 u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
e0701b79 469#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
718e3744 470
471 /* allowas-in. */
472 char allowas_in[AFI_MAX][SAFI_MAX];
ac41b2a2 473
e0701b79 474 /* peer reset cause */
475 char last_reset;
476#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
477#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
478#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
479#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
480#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
481#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
482#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
483#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
484#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
485#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
486#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
487#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
488#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
489#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
490#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
491#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
492#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
493#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
494#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
495#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
496#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
93406d87 497#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
e0701b79 498
ac41b2a2 499 /* The kind of route-map Flags.*/
500 u_char rmap_type;
501#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
502#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
503#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
504#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
505#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
506#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
fee0f4c6 507#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
508#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
718e3744 509};
510
511/* This structure's member directly points incoming packet data
512 stream. */
513struct bgp_nlri
514{
515 /* AFI. */
516 afi_t afi;
517
518 /* SAFI. */
519 safi_t safi;
520
521 /* Pointer to NLRI byte stream. */
522 u_char *nlri;
523
524 /* Length of whole NLRI. */
525 bgp_size_t length;
526};
527
528/* BGP versions. */
529#define BGP_VERSION_4 4
718e3744 530
531/* Default BGP port number. */
532#define BGP_PORT_DEFAULT 179
533
534/* BGP message header and packet size. */
535#define BGP_MARKER_SIZE 16
536#define BGP_HEADER_SIZE 19
537#define BGP_MAX_PACKET_SIZE 4096
538
539/* BGP minimum message size. */
540#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
541#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
542#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
543#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
544#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
545#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
546
547/* BGP message types. */
548#define BGP_MSG_OPEN 1
549#define BGP_MSG_UPDATE 2
550#define BGP_MSG_NOTIFY 3
551#define BGP_MSG_KEEPALIVE 4
552#define BGP_MSG_ROUTE_REFRESH_NEW 5
553#define BGP_MSG_CAPABILITY 6
554#define BGP_MSG_ROUTE_REFRESH_OLD 128
555
556/* BGP open optional parameter. */
557#define BGP_OPEN_OPT_AUTH 1
558#define BGP_OPEN_OPT_CAP 2
559
560/* BGP4 attribute type codes. */
561#define BGP_ATTR_ORIGIN 1
562#define BGP_ATTR_AS_PATH 2
563#define BGP_ATTR_NEXT_HOP 3
564#define BGP_ATTR_MULTI_EXIT_DISC 4
565#define BGP_ATTR_LOCAL_PREF 5
566#define BGP_ATTR_ATOMIC_AGGREGATE 6
567#define BGP_ATTR_AGGREGATOR 7
568#define BGP_ATTR_COMMUNITIES 8
569#define BGP_ATTR_ORIGINATOR_ID 9
570#define BGP_ATTR_CLUSTER_LIST 10
571#define BGP_ATTR_DPA 11
572#define BGP_ATTR_ADVERTISER 12
573#define BGP_ATTR_RCID_PATH 13
574#define BGP_ATTR_MP_REACH_NLRI 14
575#define BGP_ATTR_MP_UNREACH_NLRI 15
576#define BGP_ATTR_EXT_COMMUNITIES 16
577
578/* BGP update origin. */
579#define BGP_ORIGIN_IGP 0
580#define BGP_ORIGIN_EGP 1
581#define BGP_ORIGIN_INCOMPLETE 2
582
583/* BGP notify message codes. */
584#define BGP_NOTIFY_HEADER_ERR 1
585#define BGP_NOTIFY_OPEN_ERR 2
586#define BGP_NOTIFY_UPDATE_ERR 3
587#define BGP_NOTIFY_HOLD_ERR 4
588#define BGP_NOTIFY_FSM_ERR 5
589#define BGP_NOTIFY_CEASE 6
590#define BGP_NOTIFY_CAPABILITY_ERR 7
591#define BGP_NOTIFY_MAX 8
592
593/* BGP_NOTIFY_HEADER_ERR sub codes. */
594#define BGP_NOTIFY_HEADER_NOT_SYNC 1
595#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
596#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
597#define BGP_NOTIFY_HEADER_MAX 4
598
599/* BGP_NOTIFY_OPEN_ERR sub codes. */
600#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
601#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
602#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
603#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
604#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
605#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
606#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
607#define BGP_NOTIFY_OPEN_MAX 8
608
609/* BGP_NOTIFY_UPDATE_ERR sub codes. */
610#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
611#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
612#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
613#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
614#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
615#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
616#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
617#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
618#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
619#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
620#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
621#define BGP_NOTIFY_UPDATE_MAX 12
622
545acafb 623/* BGP_NOTIFY_CEASE sub codes (draft-ietf-idr-cease-subcode-05). */
718e3744 624#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
625#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
626#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
627#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
628#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
629#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
545acafb 630#define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
631#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
632#define BGP_NOTIFY_CEASE_MAX 9
718e3744 633
634/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
635#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
636#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
637#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
638#define BGP_NOTIFY_CAPABILITY_MAX 4
639
640/* BGP finite state machine status. */
641#define Idle 1
642#define Connect 2
643#define Active 3
644#define OpenSent 4
645#define OpenConfirm 5
646#define Established 6
647#define BGP_STATUS_MAX 7
648
649/* BGP finite state machine events. */
650#define BGP_Start 1
651#define BGP_Stop 2
652#define TCP_connection_open 3
653#define TCP_connection_closed 4
654#define TCP_connection_open_failed 5
655#define TCP_fatal_error 6
656#define ConnectRetry_timer_expired 7
657#define Hold_Timer_expired 8
658#define KeepAlive_timer_expired 9
659#define Receive_OPEN_message 10
660#define Receive_KEEPALIVE_message 11
661#define Receive_UPDATE_message 12
662#define Receive_NOTIFICATION_message 13
663#define BGP_EVENTS_MAX 14
664
665/* BGP timers default value. */
666#define BGP_INIT_START_TIMER 5
667#define BGP_ERROR_START_TIMER 30
668#define BGP_DEFAULT_HOLDTIME 180
669#define BGP_DEFAULT_KEEPALIVE 60
670#define BGP_DEFAULT_ASORIGINATE 15
671#define BGP_DEFAULT_EBGP_ROUTEADV 30
672#define BGP_DEFAULT_IBGP_ROUTEADV 5
673#define BGP_CLEAR_CONNECT_RETRY 20
674#define BGP_DEFAULT_CONNECT_RETRY 120
675
676/* BGP default local preference. */
677#define BGP_DEFAULT_LOCAL_PREF 100
678
538621f2 679/* BGP graceful restart */
680#define BGP_DEFAULT_RESTART_TIME 120
681#define BGP_DEFAULT_STALEPATH_TIME 360
682
718e3744 683/* SAFI which used in open capability negotiation. */
684#define BGP_SAFI_VPNV4 128
685#define BGP_SAFI_VPNV6 129
686
687/* Max TTL value. */
688#define TTL_MAX 255
689
690/* BGP uptime string length. */
691#define BGP_UPTIME_LEN 25
692
693/* Default configuration settings for bgpd. */
694#define BGP_VTY_PORT 2605
718e3744 695#define BGP_DEFAULT_CONFIG "bgpd.conf"
696
697/* Check AS path loop when we send NLRI. */
698/* #define BGP_SEND_ASPATH_CHECK */
699
700/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
701 a peer who's AS is part of our Confederation. */
702enum
703{
704 BGP_PEER_IBGP,
705 BGP_PEER_EBGP,
706 BGP_PEER_INTERNAL,
707 BGP_PEER_CONFED
708};
709
710/* Flag for peer_clear_soft(). */
711enum bgp_clear_type
712{
713 BGP_CLEAR_SOFT_NONE,
714 BGP_CLEAR_SOFT_OUT,
715 BGP_CLEAR_SOFT_IN,
716 BGP_CLEAR_SOFT_BOTH,
fee0f4c6 717 BGP_CLEAR_SOFT_IN_ORF_PREFIX,
718 BGP_CLEAR_SOFT_RSCLIENT
718e3744 719};
720
721/* Macros. */
722#define BGP_INPUT(P) ((P)->ibuf)
723#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
724
725/* Macro to check BGP information is alive or not. */
726#define BGP_INFO_HOLDDOWN(BI) \
727 (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \
728 || CHECK_FLAG ((BI)->flags, BGP_INFO_HISTORY) \
729 || CHECK_FLAG ((BI)->flags, BGP_INFO_DAMPED))
730
731/* Count prefix size from mask length */
732#define PSIZE(a) (((a) + 7) / (8))
733
734/* BGP error codes. */
735#define BGP_SUCCESS 0
736#define BGP_ERR_INVALID_VALUE -1
737#define BGP_ERR_INVALID_FLAG -2
738#define BGP_ERR_INVALID_AS -3
739#define BGP_ERR_INVALID_BGP -4
740#define BGP_ERR_PEER_GROUP_MEMBER -5
741#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
742#define BGP_ERR_PEER_GROUP_MEMBER_EXISTS -7
743#define BGP_ERR_PEER_BELONGS_TO_GROUP -8
744#define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED -9
745#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -10
746#define BGP_ERR_PEER_GROUP_CANT_CHANGE -11
747#define BGP_ERR_PEER_GROUP_MISMATCH -12
748#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -13
749#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -14
750#define BGP_ERR_AS_MISMATCH -15
751#define BGP_ERR_PEER_INACTIVE -16
752#define BGP_ERR_INVALID_FOR_PEER_GROUP_MEMBER -17
753#define BGP_ERR_PEER_GROUP_HAS_THE_FLAG -18
754#define BGP_ERR_PEER_FLAG_CONFLICT -19
755#define BGP_ERR_PEER_GROUP_SHUTDOWN -20
756#define BGP_ERR_PEER_FILTER_CONFLICT -21
757#define BGP_ERR_NOT_INTERNAL_PEER -22
758#define BGP_ERR_REMOVE_PRIVATE_AS -23
759#define BGP_ERR_AF_UNCONFIGURED -24
760#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -25
761#define BGP_ERR_INSTANCE_MISMATCH -26
762#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -27
763#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -28
764#define BGP_ERR_MAX -29
765
766extern struct bgp_master *bm;
767
768extern struct thread_master *master;
769
770/* Prototypes. */
771void bgp_terminate (void);
772void bgp_reset (void);
773void bgp_zclient_reset ();
774int bgp_nexthop_set (union sockunion *, union sockunion *,
775 struct bgp_nexthop *, struct peer *);
776struct bgp *bgp_get_default ();
fd79ac91 777struct bgp *bgp_lookup (as_t, const char *);
778struct bgp *bgp_lookup_by_name (const char *);
718e3744 779struct peer *peer_lookup (struct bgp *, union sockunion *);
fd79ac91 780struct peer_group *peer_group_lookup (struct bgp *, const char *);
781struct peer_group *peer_group_get (struct bgp *, const char *);
718e3744 782struct peer *peer_lookup_with_open (union sockunion *, as_t, struct in_addr *,
783 int *);
784int peer_sort (struct peer *peer);
785int peer_active (struct peer *);
786int peer_active_nego (struct peer *);
787struct peer *peer_create_accept (struct bgp *);
788char *peer_uptime (time_t, char *, size_t);
789void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
790\f
791void bgp_master_init ();
792
793void bgp_init ();
794
795int bgp_option_set (int);
796int bgp_option_unset (int);
797int bgp_option_check (int);
798
fd79ac91 799int bgp_get (struct bgp **, as_t *, const char *);
718e3744 800int bgp_delete (struct bgp *);
801
802int bgp_flag_set (struct bgp *, int);
803int bgp_flag_unset (struct bgp *, int);
804int bgp_flag_check (struct bgp *, int);
805
806int bgp_router_id_set (struct bgp *, struct in_addr *);
807int bgp_router_id_unset (struct bgp *);
808
809int bgp_cluster_id_set (struct bgp *, struct in_addr *);
810int bgp_cluster_id_unset (struct bgp *);
811
812int bgp_confederation_id_set (struct bgp *, as_t);
813int bgp_confederation_id_unset (struct bgp *);
814int bgp_confederation_peers_check (struct bgp *, as_t);
815
816int bgp_confederation_peers_add (struct bgp *, as_t);
817int bgp_confederation_peers_remove (struct bgp *, as_t);
818
819int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
820int bgp_timers_unset (struct bgp *);
821
822int bgp_default_local_preference_set (struct bgp *, u_int32_t);
823int bgp_default_local_preference_unset (struct bgp *);
824
fee0f4c6 825int peer_rsclient_active (struct peer *);
826
718e3744 827int peer_remote_as (struct bgp *, union sockunion *, as_t *, afi_t, safi_t);
fd79ac91 828int peer_group_remote_as (struct bgp *, const char *, as_t *);
718e3744 829int peer_delete (struct peer *peer);
830int peer_group_delete (struct peer_group *);
831int peer_group_remote_as_delete (struct peer_group *);
832
833int peer_activate (struct peer *, afi_t, safi_t);
834int peer_deactivate (struct peer *, afi_t, safi_t);
835
836int peer_group_bind (struct bgp *, union sockunion *, struct peer_group *,
837 afi_t, safi_t, as_t *);
838int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
839 afi_t, safi_t);
840
841int peer_flag_set (struct peer *, u_int32_t);
842int peer_flag_unset (struct peer *, u_int32_t);
843
844int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
845int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
846int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
847
848int peer_ebgp_multihop_set (struct peer *, int);
849int peer_ebgp_multihop_unset (struct peer *);
850
851int peer_description_set (struct peer *, char *);
852int peer_description_unset (struct peer *);
853
fd79ac91 854int peer_update_source_if_set (struct peer *, const char *);
718e3744 855int peer_update_source_addr_set (struct peer *, union sockunion *);
856int peer_update_source_unset (struct peer *);
857
fd79ac91 858int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
718e3744 859int peer_default_originate_unset (struct peer *, afi_t, safi_t);
860
861int peer_port_set (struct peer *, u_int16_t);
862int peer_port_unset (struct peer *);
863
864int peer_weight_set (struct peer *, u_int16_t);
865int peer_weight_unset (struct peer *);
866
867int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
868int peer_timers_unset (struct peer *);
869
870int peer_timers_connect_set (struct peer *, u_int32_t);
871int peer_timers_connect_unset (struct peer *);
872
873int peer_advertise_interval_set (struct peer *, u_int32_t);
874int peer_advertise_interval_unset (struct peer *);
875
fd79ac91 876int peer_interface_set (struct peer *, const char *);
718e3744 877int peer_interface_unset (struct peer *);
878
fd79ac91 879int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
718e3744 880int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
881
882int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
883int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
884
885int peer_local_as_set (struct peer *, as_t, int);
886int peer_local_as_unset (struct peer *);
887
fd79ac91 888int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
718e3744 889int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
890
fd79ac91 891int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
718e3744 892int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
893
fd79ac91 894int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
718e3744 895int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
896
fd79ac91 897int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
718e3744 898int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
899
0a486e5f 900int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
718e3744 901int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
902
903int peer_clear (struct peer *);
904int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
93406d87 905
906void peer_nsf_stop (struct peer *);
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