1: /* BGP message definition header.
2: Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
3:
4: This file is part of GNU Zebra.
5:
6: GNU Zebra is free software; you can redistribute it and/or modify it
7: under the terms of the GNU General Public License as published by the
8: Free Software Foundation; either version 2, or (at your option) any
9: later version.
10:
11: GNU Zebra is distributed in the hope that it will be useful, but
12: WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU Zebra; see the file COPYING. If not, write to the Free
18: Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
19: 02111-1307, USA. */
20:
21: #ifndef _QUAGGA_BGPD_H
22: #define _QUAGGA_BGPD_H
23:
24: /* For union sockunion. */
25: #include "sockunion.h"
26:
27: /* Typedef BGP specific types. */
28: typedef u_int32_t as_t;
29: typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
30: typedef u_int16_t bgp_size_t;
31:
32: /* BGP master for system wide configurations and variables. */
33: struct bgp_master
34: {
35: /* BGP instance list. */
36: struct list *bgp;
37:
38: /* BGP thread master. */
39: struct thread_master *master;
40:
41: /* work queues */
42: struct work_queue *process_main_queue;
43: struct work_queue *process_rsclient_queue;
44:
45: /* Listening sockets */
46: struct list *listen_sockets;
47:
48: /* BGP port number. */
49: u_int16_t port;
50:
51: /* Listener address */
52: char *address;
53:
54: /* BGP start time. */
55: time_t start_time;
56:
57: /* Various BGP global configuration. */
58: u_char options;
59: #define BGP_OPT_NO_FIB (1 << 0)
60: #define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
61: #define BGP_OPT_CONFIG_CISCO (1 << 2)
62: #define BGP_OPT_NO_LISTEN (1 << 3)
63: };
64:
65: /* BGP instance structure. */
66: struct bgp
67: {
68: /* AS number of this BGP instance. */
69: as_t as;
70:
71: /* Name of this BGP instance. */
72: char *name;
73:
74: /* Reference count to allow peer_delete to finish after bgp_delete */
75: int lock;
76:
77: /* Self peer. */
78: struct peer *peer_self;
79:
80: /* BGP peer. */
81: struct list *peer;
82:
83: /* BGP peer group. */
84: struct list *group;
85:
86: /* BGP route-server-clients. */
87: struct list *rsclient;
88:
89: /* BGP configuration. */
90: u_int16_t config;
91: #define BGP_CONFIG_ROUTER_ID (1 << 0)
92: #define BGP_CONFIG_CLUSTER_ID (1 << 1)
93: #define BGP_CONFIG_CONFEDERATION (1 << 2)
94:
95: /* BGP router identifier. */
96: struct in_addr router_id;
97: struct in_addr router_id_static;
98:
99: /* BGP route reflector cluster ID. */
100: struct in_addr cluster_id;
101:
102: /* BGP confederation information. */
103: as_t confed_id;
104: as_t *confed_peers;
105: int confed_peers_cnt;
106:
107: struct thread *t_startup;
108:
109: /* BGP flags. */
110: u_int16_t flags;
111: #define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
112: #define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
113: #define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
114: #define BGP_FLAG_MED_CONFED (1 << 3)
115: #define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
116: #define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
117: #define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
118: #define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
119: #define BGP_FLAG_ASPATH_IGNORE (1 << 8)
120: #define BGP_FLAG_IMPORT_CHECK (1 << 9)
121: #define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
122: #define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
123: #define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
124: #define BGP_FLAG_ASPATH_CONFED (1 << 13)
125: #define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
126: #define BGP_FLAG_DELETING (1 << 15)
127:
128: /* BGP Per AF flags */
129: u_int16_t af_flags[AFI_MAX][SAFI_MAX];
130: #define BGP_CONFIG_DAMPENING (1 << 0)
131:
132: /* Static route configuration. */
133: struct bgp_table *route[AFI_MAX][SAFI_MAX];
134:
135: /* Aggregate address configuration. */
136: struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
137:
138: /* BGP routing information base. */
139: struct bgp_table *rib[AFI_MAX][SAFI_MAX];
140:
141: /* BGP redistribute configuration. */
142: u_char redist[AFI_MAX][ZEBRA_ROUTE_MAX];
143:
144: /* BGP redistribute metric configuration. */
145: u_char redist_metric_flag[AFI_MAX][ZEBRA_ROUTE_MAX];
146: u_int32_t redist_metric[AFI_MAX][ZEBRA_ROUTE_MAX];
147:
148: /* BGP redistribute route-map. */
149: struct
150: {
151: char *name;
152: struct route_map *map;
153: } rmap[AFI_MAX][ZEBRA_ROUTE_MAX];
154:
155: /* BGP distance configuration. */
156: u_char distance_ebgp;
157: u_char distance_ibgp;
158: u_char distance_local;
159:
160: /* BGP default local-preference. */
161: u_int32_t default_local_pref;
162:
163: /* BGP default timer. */
164: u_int32_t default_holdtime;
165: u_int32_t default_keepalive;
166:
167: /* BGP graceful restart */
168: u_int32_t restart_time;
169: u_int32_t stalepath_time;
170:
171: /* Maximum-paths configuration */
172: struct bgp_maxpaths_cfg {
173: u_int16_t maxpaths_ebgp;
174: u_int16_t maxpaths_ibgp;
175: } maxpaths[AFI_MAX][SAFI_MAX];
176: };
177:
178: /* BGP peer-group support. */
179: struct peer_group
180: {
181: /* Name of the peer-group. */
182: char *name;
183:
184: /* Pointer to BGP. */
185: struct bgp *bgp;
186:
187: /* Peer-group client list. */
188: struct list *peer;
189:
190: /* Peer-group config */
191: struct peer *conf;
192: };
193:
194: /* BGP Notify message format. */
195: struct bgp_notify
196: {
197: u_char code;
198: u_char subcode;
199: char *data;
200: bgp_size_t length;
201: };
202:
203: /* Next hop self address. */
204: struct bgp_nexthop
205: {
206: struct interface *ifp;
207: struct in_addr v4;
208: struct in6_addr v6_global;
209: struct in6_addr v6_local;
210: };
211:
212: /* BGP router distinguisher value. */
213: #define BGP_RD_SIZE 8
214:
215: struct bgp_rd
216: {
217: u_char val[BGP_RD_SIZE];
218: };
219:
220: #define RMAP_IN 0
221: #define RMAP_OUT 1
222: #define RMAP_IMPORT 2
223: #define RMAP_EXPORT 3
224: #define RMAP_MAX 4
225:
226: /* BGP filter structure. */
227: struct bgp_filter
228: {
229: /* Distribute-list. */
230: struct
231: {
232: char *name;
233: struct access_list *alist;
234: } dlist[FILTER_MAX];
235:
236: /* Prefix-list. */
237: struct
238: {
239: char *name;
240: struct prefix_list *plist;
241: } plist[FILTER_MAX];
242:
243: /* Filter-list. */
244: struct
245: {
246: char *name;
247: struct as_list *aslist;
248: } aslist[FILTER_MAX];
249:
250: /* Route-map. */
251: struct
252: {
253: char *name;
254: struct route_map *map;
255: } map[RMAP_MAX];
256:
257: /* Unsuppress-map. */
258: struct
259: {
260: char *name;
261: struct route_map *map;
262: } usmap;
263: };
264:
265: /* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
266: a peer who's AS is part of our Confederation. */
267: typedef enum
268: {
269: BGP_PEER_IBGP = 1,
270: BGP_PEER_EBGP,
271: BGP_PEER_INTERNAL,
272: BGP_PEER_CONFED,
273: } bgp_peer_sort_t;
274:
275: /* BGP neighbor structure. */
276: struct peer
277: {
278: /* BGP structure. */
279: struct bgp *bgp;
280:
281: /* reference count, primarily to allow bgp_process'ing of route_node's
282: * to be done after a struct peer is deleted.
283: *
284: * named 'lock' for hysterical reasons within Quagga.
285: */
286: int lock;
287:
288: /* BGP peer group. */
289: struct peer_group *group;
290: u_char af_group[AFI_MAX][SAFI_MAX];
291:
292: /* Peer's remote AS number. */
293: as_t as;
294:
295: /* Peer's local AS number. */
296: as_t local_as;
297:
298: bgp_peer_sort_t sort;
299:
300: /* Peer's Change local AS number. */
301: as_t change_local_as;
302:
303: /* Remote router ID. */
304: struct in_addr remote_id;
305:
306: /* Local router ID. */
307: struct in_addr local_id;
308:
309: /* Peer specific RIB when configured as route-server-client. */
310: struct bgp_table *rib[AFI_MAX][SAFI_MAX];
311:
312: /* Packet receive and send buffer. */
313: struct stream *ibuf;
314: struct stream_fifo *obuf;
315: struct stream *work;
316:
317: /* We use a separate stream to encode MP_REACH_NLRI for efficient
318: * NLRI packing. peer->work stores all the other attributes. The
319: * actual packet is then constructed by concatenating the two.
320: */
321: struct stream *scratch;
322:
323: /* Status of the peer. */
324: int status;
325: int ostatus;
326:
327: /* Peer index, used for dumping TABLE_DUMP_V2 format */
328: uint16_t table_dump_index;
329:
330: /* Peer information */
331: int fd; /* File descriptor */
332: int ttl; /* TTL of TCP connection to the peer. */
333: int rtt; /* Estimated round-trip-time from TCP_INFO */
334: int gtsm_hops; /* minimum hopcount to peer */
335: char *desc; /* Description of the peer. */
336: unsigned short port; /* Destination port for peer */
337: char *host; /* Printable address of the peer. */
338: union sockunion su; /* Sockunion address of the peer. */
339: time_t uptime; /* Last Up/Down time */
340: time_t readtime; /* Last read time */
341: time_t resettime; /* Last reset time */
342:
343: ifindex_t ifindex; /* ifindex of the BGP connection. */
344: char *ifname; /* bind interface name. */
345: char *update_if;
346: union sockunion *update_source;
347: struct zlog *log;
348:
349: union sockunion *su_local; /* Sockunion of local address. */
350: union sockunion *su_remote; /* Sockunion of remote address. */
351: int shared_network; /* Is this peer shared same network. */
352: struct bgp_nexthop nexthop; /* Nexthop */
353:
354: /* Peer address family configuration. */
355: u_char afc[AFI_MAX][SAFI_MAX];
356: u_char afc_nego[AFI_MAX][SAFI_MAX];
357: u_char afc_adv[AFI_MAX][SAFI_MAX];
358: u_char afc_recv[AFI_MAX][SAFI_MAX];
359:
360: /* Capability flags (reset in bgp_stop) */
361: u_int16_t cap;
362: #define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
363: #define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
364: #define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
365: #define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
366: #define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
367: #define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
368: #define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
369: #define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
370: #define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
371: #define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
372: #define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
373:
374: /* Capability flags (reset in bgp_stop) */
375: u_int16_t af_cap[AFI_MAX][SAFI_MAX];
376: #define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
377: #define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
378: #define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
379: #define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
380: #define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
381: #define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
382: #define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
383: #define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
384:
385: /* Global configuration flags. */
386: u_int32_t flags;
387: #define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
388: #define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
389: #define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
390: #define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
391: #define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
392: #define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
393: #define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
394: #define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
395: #define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
396:
397: /* NSF mode (graceful restart) */
398: u_char nsf[AFI_MAX][SAFI_MAX];
399:
400: /* Per AF configuration flags. */
401: u_int32_t af_flags[AFI_MAX][SAFI_MAX];
402: #define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
403: #define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
404: #define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
405: #define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
406: #define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
407: #define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
408: #define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
409: #define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
410: #define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
411: #define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
412: #define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
413: #define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
414: #define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
415: #define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
416: #define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
417: #define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
418: #define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
419: #define PEER_FLAG_NEXTHOP_SELF_ALL (1 << 17) /* next-hop-self all */
420:
421: /* MD5 password */
422: char *password;
423:
424: /* default-originate route-map. */
425: struct
426: {
427: char *name;
428: struct route_map *map;
429: } default_rmap[AFI_MAX][SAFI_MAX];
430:
431: /* Peer status flags. */
432: u_int16_t sflags;
433: #define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
434: #define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
435: #define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
436: #define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
437: #define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
438: #define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
439: #define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
440:
441: /* Peer status af flags (reset in bgp_stop) */
442: u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
443: #define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
444: #define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
445: #define PEER_STATUS_DEFAULT_ORIGINATE (1 << 2) /* default-originate peer */
446: #define PEER_STATUS_PREFIX_THRESHOLD (1 << 3) /* exceed prefix-threshold */
447: #define PEER_STATUS_PREFIX_LIMIT (1 << 4) /* exceed prefix-limit */
448: #define PEER_STATUS_EOR_SEND (1 << 5) /* end-of-rib send to peer */
449: #define PEER_STATUS_EOR_RECEIVED (1 << 6) /* end-of-rib received from peer */
450:
451: /* Default attribute value for the peer. */
452: u_int32_t config;
453: #define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
454: #define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
455: #define PEER_CONFIG_CONNECT (1 << 2) /* connect */
456: #define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
457: u_int32_t weight;
458: u_int32_t holdtime;
459: u_int32_t keepalive;
460: u_int32_t connect;
461: u_int32_t routeadv;
462:
463: /* Timer values. */
464: u_int32_t v_start;
465: u_int32_t v_connect;
466: u_int32_t v_holdtime;
467: u_int32_t v_keepalive;
468: u_int32_t v_routeadv;
469: u_int32_t v_pmax_restart;
470: u_int32_t v_gr_restart;
471:
472: /* Threads. */
473: struct thread *t_read;
474: struct thread *t_write;
475: struct thread *t_start;
476: struct thread *t_connect;
477: struct thread *t_holdtime;
478: struct thread *t_keepalive;
479: struct thread *t_routeadv;
480: struct thread *t_pmax_restart;
481: struct thread *t_gr_restart;
482: struct thread *t_gr_stale;
483:
484: /* workqueues */
485: struct work_queue *clear_node_queue;
486:
487: /* Statistics field */
488: u_int32_t open_in; /* Open message input count */
489: u_int32_t open_out; /* Open message output count */
490: u_int32_t update_in; /* Update message input count */
491: u_int32_t update_out; /* Update message ouput count */
492: time_t update_time; /* Update message received time. */
493: u_int32_t keepalive_in; /* Keepalive input count */
494: u_int32_t keepalive_out; /* Keepalive output count */
495: u_int32_t notify_in; /* Notify input count */
496: u_int32_t notify_out; /* Notify output count */
497: u_int32_t refresh_in; /* Route Refresh input count */
498: u_int32_t refresh_out; /* Route Refresh output count */
499: u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
500: u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
501:
502: /* BGP state count */
503: u_int32_t established; /* Established */
504: u_int32_t dropped; /* Dropped */
505:
506: /* Syncronization list and time. */
507: struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
508: time_t synctime;
509:
510: /* Send prefix count. */
511: unsigned long scount[AFI_MAX][SAFI_MAX];
512:
513: /* Announcement attribute hash. */
514: struct hash *hash[AFI_MAX][SAFI_MAX];
515:
516: /* Notify data. */
517: struct bgp_notify notify;
518:
519: /* Whole packet size to be read. */
520: unsigned long packet_size;
521:
522: /* Filter structure. */
523: struct bgp_filter filter[AFI_MAX][SAFI_MAX];
524:
525: /* ORF Prefix-list */
526: struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
527:
528: /* Prefix count. */
529: unsigned long pcount[AFI_MAX][SAFI_MAX];
530:
531: /* Max prefix count. */
532: unsigned long pmax[AFI_MAX][SAFI_MAX];
533: u_char pmax_threshold[AFI_MAX][SAFI_MAX];
534: u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
535: #define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
536:
537: /* allowas-in. */
538: char allowas_in[AFI_MAX][SAFI_MAX];
539:
540: /* peer reset cause */
541: char last_reset;
542: #define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
543: #define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
544: #define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
545: #define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
546: #define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
547: #define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
548: #define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
549: #define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
550: #define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
551: #define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
552: #define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
553: #define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
554: #define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
555: #define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
556: #define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
557: #define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
558: #define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
559: #define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
560: #define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
561: #define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
562: #define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
563: #define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
564:
565: /* The kind of route-map Flags.*/
566: u_char rmap_type;
567: #define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
568: #define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
569: #define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
570: #define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
571: #define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
572: #define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
573: #define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
574: #define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
575: };
576:
577: #define PEER_PASSWORD_MINLEN (1)
578: #define PEER_PASSWORD_MAXLEN (80)
579:
580: /* This structure's member directly points incoming packet data
581: stream. */
582: struct bgp_nlri
583: {
584: /* AFI. */
585: afi_t afi;
586:
587: /* SAFI. */
588: safi_t safi;
589:
590: /* Pointer to NLRI byte stream. */
591: u_char *nlri;
592:
593: /* Length of whole NLRI. */
594: bgp_size_t length;
595: };
596:
597: /* BGP versions. */
598: #define BGP_VERSION_4 4
599:
600: /* Default BGP port number. */
601: #define BGP_PORT_DEFAULT 179
602:
603: /* BGP message header and packet size. */
604: #define BGP_MARKER_SIZE 16
605: #define BGP_HEADER_SIZE 19
606: #define BGP_MAX_PACKET_SIZE 4096
607:
608: /* BGP minimum message size. */
609: #define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
610: #define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
611: #define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
612: #define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
613: #define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
614: #define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
615:
616: /* BGP message types. */
617: #define BGP_MSG_OPEN 1
618: #define BGP_MSG_UPDATE 2
619: #define BGP_MSG_NOTIFY 3
620: #define BGP_MSG_KEEPALIVE 4
621: #define BGP_MSG_ROUTE_REFRESH_NEW 5
622: #define BGP_MSG_CAPABILITY 6
623: #define BGP_MSG_ROUTE_REFRESH_OLD 128
624:
625: /* BGP open optional parameter. */
626: #define BGP_OPEN_OPT_AUTH 1
627: #define BGP_OPEN_OPT_CAP 2
628:
629: /* BGP4 attribute type codes. */
630: #define BGP_ATTR_ORIGIN 1
631: #define BGP_ATTR_AS_PATH 2
632: #define BGP_ATTR_NEXT_HOP 3
633: #define BGP_ATTR_MULTI_EXIT_DISC 4
634: #define BGP_ATTR_LOCAL_PREF 5
635: #define BGP_ATTR_ATOMIC_AGGREGATE 6
636: #define BGP_ATTR_AGGREGATOR 7
637: #define BGP_ATTR_COMMUNITIES 8
638: #define BGP_ATTR_ORIGINATOR_ID 9
639: #define BGP_ATTR_CLUSTER_LIST 10
640: #define BGP_ATTR_DPA 11
641: #define BGP_ATTR_ADVERTISER 12
642: #define BGP_ATTR_RCID_PATH 13
643: #define BGP_ATTR_MP_REACH_NLRI 14
644: #define BGP_ATTR_MP_UNREACH_NLRI 15
645: #define BGP_ATTR_EXT_COMMUNITIES 16
646: #define BGP_ATTR_AS4_PATH 17
647: #define BGP_ATTR_AS4_AGGREGATOR 18
648: #define BGP_ATTR_AS_PATHLIMIT 21
649: #define BGP_ATTR_ENCAP 23
650:
651: /* BGP update origin. */
652: #define BGP_ORIGIN_IGP 0
653: #define BGP_ORIGIN_EGP 1
654: #define BGP_ORIGIN_INCOMPLETE 2
655:
656: /* BGP notify message codes. */
657: #define BGP_NOTIFY_HEADER_ERR 1
658: #define BGP_NOTIFY_OPEN_ERR 2
659: #define BGP_NOTIFY_UPDATE_ERR 3
660: #define BGP_NOTIFY_HOLD_ERR 4
661: #define BGP_NOTIFY_FSM_ERR 5
662: #define BGP_NOTIFY_CEASE 6
663: #define BGP_NOTIFY_CAPABILITY_ERR 7
664: #define BGP_NOTIFY_MAX 8
665:
666: #define BGP_NOTIFY_SUBCODE_UNSPECIFIC 0
667:
668: /* BGP_NOTIFY_HEADER_ERR sub codes. */
669: #define BGP_NOTIFY_HEADER_NOT_SYNC 1
670: #define BGP_NOTIFY_HEADER_BAD_MESLEN 2
671: #define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
672: #define BGP_NOTIFY_HEADER_MAX 4
673:
674: /* BGP_NOTIFY_OPEN_ERR sub codes. */
675: #define BGP_NOTIFY_OPEN_UNSPECIFIC 0
676: #define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
677: #define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
678: #define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
679: #define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
680: #define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
681: #define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
682: #define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
683: #define BGP_NOTIFY_OPEN_MAX 8
684:
685: /* BGP_NOTIFY_UPDATE_ERR sub codes. */
686: #define BGP_NOTIFY_UPDATE_MAL_ATTR 1
687: #define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
688: #define BGP_NOTIFY_UPDATE_MISS_ATTR 3
689: #define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
690: #define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
691: #define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
692: #define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
693: #define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
694: #define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
695: #define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
696: #define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
697: #define BGP_NOTIFY_UPDATE_MAX 12
698:
699: /* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
700: #define BGP_NOTIFY_CEASE_MAX_PREFIX 1
701: #define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
702: #define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
703: #define BGP_NOTIFY_CEASE_ADMIN_RESET 4
704: #define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
705: #define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
706: #define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION 7
707: #define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
708: #define BGP_NOTIFY_CEASE_MAX 9
709:
710: /* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
711: #define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
712: #define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
713: #define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
714: #define BGP_NOTIFY_CAPABILITY_MAX 4
715:
716: /* BGP finite state machine status. */
717: #define Idle 1
718: #define Connect 2
719: #define Active 3
720: #define OpenSent 4
721: #define OpenConfirm 5
722: #define Established 6
723: #define Clearing 7
724: #define Deleted 8
725: #define BGP_STATUS_MAX 9
726:
727: /* BGP finite state machine events. */
728: #define BGP_Start 1
729: #define BGP_Stop 2
730: #define TCP_connection_open 3
731: #define TCP_connection_closed 4
732: #define TCP_connection_open_failed 5
733: #define TCP_fatal_error 6
734: #define ConnectRetry_timer_expired 7
735: #define Hold_Timer_expired 8
736: #define KeepAlive_timer_expired 9
737: #define Receive_OPEN_message 10
738: #define Receive_KEEPALIVE_message 11
739: #define Receive_UPDATE_message 12
740: #define Receive_NOTIFICATION_message 13
741: #define Clearing_Completed 14
742: #define BGP_EVENTS_MAX 15
743:
744: /* BGP timers default value. */
745: #define BGP_INIT_START_TIMER 5
746: #define BGP_DEFAULT_HOLDTIME 180
747: #define BGP_DEFAULT_KEEPALIVE 60
748: #define BGP_DEFAULT_EBGP_ROUTEADV 30
749: #define BGP_DEFAULT_IBGP_ROUTEADV 5
750: #define BGP_CLEAR_CONNECT_RETRY 20
751: #define BGP_DEFAULT_CONNECT_RETRY 10
752:
753: /* BGP default local preference. */
754: #define BGP_DEFAULT_LOCAL_PREF 100
755:
756: /* BGP graceful restart */
757: #define BGP_DEFAULT_RESTART_TIME 120
758: #define BGP_DEFAULT_STALEPATH_TIME 360
759:
760: /* RFC4364 */
761: #define SAFI_MPLS_LABELED_VPN 128
762:
763: /* Max TTL value. */
764: #define TTL_MAX 255
765:
766: /* BGP uptime string length. */
767: #define BGP_UPTIME_LEN 25
768:
769: /* Default configuration settings for bgpd. */
770: #define BGP_VTY_PORT 2605
771: #define BGP_DEFAULT_CONFIG "bgpd.conf"
772:
773: /* Check AS path loop when we send NLRI. */
774: /* #define BGP_SEND_ASPATH_CHECK */
775:
776: /* Flag for peer_clear_soft(). */
777: enum bgp_clear_type
778: {
779: BGP_CLEAR_SOFT_NONE,
780: BGP_CLEAR_SOFT_OUT,
781: BGP_CLEAR_SOFT_IN,
782: BGP_CLEAR_SOFT_BOTH,
783: BGP_CLEAR_SOFT_IN_ORF_PREFIX,
784: BGP_CLEAR_SOFT_RSCLIENT
785: };
786:
787: /* Macros. */
788: #define BGP_INPUT(P) ((P)->ibuf)
789: #define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
790: #define BGP_IS_VALID_STATE_FOR_NOTIF(S)\
791: (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
792:
793: /* Count prefix size from mask length */
794: #define PSIZE(a) (((a) + 7) / (8))
795:
796: /* BGP error codes. */
797: #define BGP_SUCCESS 0
798: #define BGP_ERR_INVALID_VALUE -1
799: #define BGP_ERR_INVALID_FLAG -2
800: #define BGP_ERR_INVALID_AS -3
801: #define BGP_ERR_INVALID_BGP -4
802: #define BGP_ERR_PEER_GROUP_MEMBER -5
803: #define BGP_ERR_MULTIPLE_INSTANCE_USED -6
804: #define BGP_ERR_PEER_GROUP_MEMBER_EXISTS -7
805: #define BGP_ERR_PEER_BELONGS_TO_GROUP -8
806: #define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED -9
807: #define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -10
808: #define BGP_ERR_PEER_GROUP_CANT_CHANGE -11
809: #define BGP_ERR_PEER_GROUP_MISMATCH -12
810: #define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -13
811: #define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -14
812: #define BGP_ERR_AS_MISMATCH -15
813: #define BGP_ERR_PEER_INACTIVE -16
814: #define BGP_ERR_INVALID_FOR_PEER_GROUP_MEMBER -17
815: #define BGP_ERR_PEER_GROUP_HAS_THE_FLAG -18
816: #define BGP_ERR_PEER_FLAG_CONFLICT -19
817: #define BGP_ERR_PEER_GROUP_SHUTDOWN -20
818: #define BGP_ERR_PEER_FILTER_CONFLICT -21
819: #define BGP_ERR_NOT_INTERNAL_PEER -22
820: #define BGP_ERR_REMOVE_PRIVATE_AS -23
821: #define BGP_ERR_AF_UNCONFIGURED -24
822: #define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -25
823: #define BGP_ERR_INSTANCE_MISMATCH -26
824: #define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -27
825: #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -28
826: #define BGP_ERR_TCPSIG_FAILED -29
827: #define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -30
828: #define BGP_ERR_NO_IBGP_WITH_TTLHACK -31
829: #define BGP_ERR_MAX -32
830: #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -33
831:
832: extern struct bgp_master *bm;
833:
834: /* Prototypes. */
835: extern void bgp_terminate (void);
836: extern void bgp_reset (void);
837: extern time_t bgp_clock (void);
838: extern void bgp_zclient_reset (void);
839: extern int bgp_nexthop_set (union sockunion *, union sockunion *,
840: struct bgp_nexthop *, struct peer *);
841: extern struct bgp *bgp_get_default (void);
842: extern struct bgp *bgp_lookup (as_t, const char *);
843: extern struct bgp *bgp_lookup_by_name (const char *);
844: extern struct peer *peer_lookup (struct bgp *, union sockunion *);
845: extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
846: extern struct peer_group *peer_group_get (struct bgp *, const char *);
847: extern struct peer *peer_lookup_with_open (union sockunion *, as_t, struct in_addr *,
848: int *);
849:
850: /*
851: * Peers are incredibly easy to memory leak
852: * due to the various ways that they are actually used
853: * Provide some functionality to debug locks and unlocks
854: */
855: extern struct peer *peer_lock_with_caller(const char *, struct peer *);
856: extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
857: #define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
858: #define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
859:
860: extern bgp_peer_sort_t peer_sort (struct peer *peer);
861: extern int peer_active (struct peer *);
862: extern int peer_active_nego (struct peer *);
863: extern struct peer *peer_create_accept (struct bgp *);
864: extern char *peer_uptime (time_t, char *, size_t);
865: extern int bgp_config_write (struct vty *);
866: extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
867:
868: extern void bgp_master_init (void);
869:
870: extern void bgp_init (void);
871: extern void bgp_route_map_init (void);
872:
873: extern int bgp_option_set (int);
874: extern int bgp_option_unset (int);
875: extern int bgp_option_check (int);
876:
877: extern int bgp_get (struct bgp **, as_t *, const char *);
878: extern int bgp_delete (struct bgp *);
879:
880: extern int bgp_flag_set (struct bgp *, int);
881: extern int bgp_flag_unset (struct bgp *, int);
882: extern int bgp_flag_check (struct bgp *, int);
883:
884: extern void bgp_lock (struct bgp *);
885: extern void bgp_unlock (struct bgp *);
886:
887: extern int bgp_router_id_set (struct bgp *, struct in_addr *);
888:
889: extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
890: extern int bgp_cluster_id_unset (struct bgp *);
891:
892: extern int bgp_confederation_id_set (struct bgp *, as_t);
893: extern int bgp_confederation_id_unset (struct bgp *);
894: extern int bgp_confederation_peers_check (struct bgp *, as_t);
895:
896: extern int bgp_confederation_peers_add (struct bgp *, as_t);
897: extern int bgp_confederation_peers_remove (struct bgp *, as_t);
898:
899: extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
900: extern int bgp_timers_unset (struct bgp *);
901:
902: extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
903: extern int bgp_default_local_preference_unset (struct bgp *);
904:
905: extern int peer_rsclient_active (struct peer *);
906:
907: extern int peer_remote_as (struct bgp *, union sockunion *, as_t *, afi_t, safi_t);
908: extern int peer_group_remote_as (struct bgp *, const char *, as_t *);
909: extern int peer_delete (struct peer *peer);
910: extern int peer_group_delete (struct peer_group *);
911: extern int peer_group_remote_as_delete (struct peer_group *);
912:
913: extern int peer_activate (struct peer *, afi_t, safi_t);
914: extern int peer_deactivate (struct peer *, afi_t, safi_t);
915:
916: extern int peer_group_bind (struct bgp *, union sockunion *, struct peer_group *,
917: afi_t, safi_t, as_t *);
918: extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
919: afi_t, safi_t);
920:
921: extern int peer_flag_set (struct peer *, u_int32_t);
922: extern int peer_flag_unset (struct peer *, u_int32_t);
923:
924: extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
925: extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
926: extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
927:
928: extern int peer_ebgp_multihop_set (struct peer *, int);
929: extern int peer_ebgp_multihop_unset (struct peer *);
930:
931: extern int peer_description_set (struct peer *, char *);
932: extern int peer_description_unset (struct peer *);
933:
934: extern int peer_update_source_if_set (struct peer *, const char *);
935: extern int peer_update_source_addr_set (struct peer *, union sockunion *);
936: extern int peer_update_source_unset (struct peer *);
937:
938: extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
939: extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
940:
941: extern int peer_port_set (struct peer *, u_int16_t);
942: extern int peer_port_unset (struct peer *);
943:
944: extern int peer_weight_set (struct peer *, u_int16_t);
945: extern int peer_weight_unset (struct peer *);
946:
947: extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
948: extern int peer_timers_unset (struct peer *);
949:
950: extern int peer_timers_connect_set (struct peer *, u_int32_t);
951: extern int peer_timers_connect_unset (struct peer *);
952:
953: extern int peer_advertise_interval_set (struct peer *, u_int32_t);
954: extern int peer_advertise_interval_unset (struct peer *);
955:
956: extern int peer_interface_set (struct peer *, const char *);
957: extern int peer_interface_unset (struct peer *);
958:
959: extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
960: extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
961:
962: extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
963: extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
964:
965: extern int peer_local_as_set (struct peer *, as_t, int, int);
966: extern int peer_local_as_unset (struct peer *);
967:
968: extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
969: extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
970:
971: extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
972: extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
973:
974: extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
975: extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
976:
977: extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
978:
979: extern int peer_password_set (struct peer *, const char *);
980: extern int peer_password_unset (struct peer *);
981:
982: extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
983:
984: extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
985: extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
986:
987: extern int peer_clear (struct peer *);
988: extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
989:
990: extern int peer_ttl_security_hops_set (struct peer *, int);
991: extern int peer_ttl_security_hops_unset (struct peer *);
992:
993: #endif /* _QUAGGA_BGPD_H */
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