bgpd/bgpd.h

   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 };
  63
  64 /* BGP instance structure.  */
  65 struct bgp
  66 {
  67   /* AS number of this BGP instance.  */
  68   as_t as;
  69
  70   /* Name of this BGP instance.  */
  71   char *name;
  72
  73   /* Reference count to allow peer_delete to finish after bgp_delete */
  74   int lock;
  75
  76   /* Self peer.  */
  77   struct peer *peer_self;
  78
  79   /* BGP peer. */
  80   struct list *peer;
  81
  82   /* BGP peer group.  */
  83   struct list *group;
  84
  85   /* BGP route-server-clients. */
  86   struct list *rsclient;
  87
  88   /* BGP configuration.  */
  89   u_int16_t config;
  90 #define BGP_CONFIG_ROUTER_ID              (1 << 0)
  91 #define BGP_CONFIG_CLUSTER_ID             (1 << 1)
  92 #define BGP_CONFIG_CONFEDERATION          (1 << 2)
  93
  94   /* BGP router identifier.  */
  95   struct in_addr router_id;
  96   struct in_addr router_id_static;
  97
  98   /* BGP route reflector cluster ID.  */
  99   struct in_addr cluster_id;
 100
 101   /* BGP confederation information.  */
 102   as_t confed_id;
 103   as_t *confed_peers;
 104   int confed_peers_cnt;
 105
 106   /* BGP flags. */
 107   u_int16_t flags;
 108 #define BGP_FLAG_ALWAYS_COMPARE_MED       (1 << 0)
 109 #define BGP_FLAG_DETERMINISTIC_MED        (1 << 1)
 110 #define BGP_FLAG_MED_MISSING_AS_WORST     (1 << 2)
 111 #define BGP_FLAG_MED_CONFED               (1 << 3)
 112 #define BGP_FLAG_NO_DEFAULT_IPV4          (1 << 4)
 113 #define BGP_FLAG_NO_CLIENT_TO_CLIENT      (1 << 5)
 114 #define BGP_FLAG_ENFORCE_FIRST_AS         (1 << 6)
 115 #define BGP_FLAG_COMPARE_ROUTER_ID        (1 << 7)
 116 #define BGP_FLAG_ASPATH_IGNORE            (1 << 8)
 117 #define BGP_FLAG_IMPORT_CHECK             (1 << 9)
 118 #define BGP_FLAG_NO_FAST_EXT_FAILOVER     (1 << 10)
 119 #define BGP_FLAG_LOG_NEIGHBOR_CHANGES     (1 << 11)
 120 #define BGP_FLAG_GRACEFUL_RESTART         (1 << 12)
 121 #define BGP_FLAG_ASPATH_CONFED            (1 << 13)
 122
 123   /* BGP Per AF flags */
 124   u_int16_t af_flags[AFI_MAX][SAFI_MAX];
 125 #define BGP_CONFIG_DAMPENING              (1 << 0)
 126
 127   /* Static route configuration.  */
 128   struct bgp_table *route[AFI_MAX][SAFI_MAX];
 129
 130   /* Aggregate address configuration.  */
 131   struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
 132
 133   /* BGP routing information base.  */
 134   struct bgp_table *rib[AFI_MAX][SAFI_MAX];
 135
 136   /* BGP redistribute configuration. */
 137   u_char redist[AFI_MAX][ZEBRA_ROUTE_MAX];
 138
 139   /* BGP redistribute metric configuration. */
 140   u_char redist_metric_flag[AFI_MAX][ZEBRA_ROUTE_MAX];
 141   u_int32_t redist_metric[AFI_MAX][ZEBRA_ROUTE_MAX];
 142
 143   /* BGP redistribute route-map.  */
 144   struct
 145   {
 146     char *name;
 147     struct route_map *map;
 148   } rmap[AFI_MAX][ZEBRA_ROUTE_MAX];
 149
 150   /* BGP distance configuration.  */
 151   u_char distance_ebgp;
 152   u_char distance_ibgp;
 153   u_char distance_local;
 154
 155   /* BGP default local-preference.  */
 156   u_int32_t default_local_pref;
 157
 158   /* BGP default timer.  */
 159   u_int32_t default_holdtime;
 160   u_int32_t default_keepalive;
 161
 162   /* BGP graceful restart */
 163   u_int32_t restart_time;
 164   u_int32_t stalepath_time;
 165 };
 166
 167 /* BGP peer-group support. */
 168 struct peer_group
 169 {
 170   /* Name of the peer-group. */
 171   char *name;
 172
 173   /* Pointer to BGP.  */
 174   struct bgp *bgp;
 175
 176   /* Peer-group client list. */
 177   struct list *peer;
 178
 179   /* Peer-group config */
 180   struct peer *conf;
 181 };
 182
 183 /* BGP Notify message format. */
 184 struct bgp_notify
 185 {
 186   u_char code;
 187   u_char subcode;
 188   char *data;
 189   bgp_size_t length;
 190 };
 191
 192 /* Next hop self address. */
 193 struct bgp_nexthop
 194 {
 195   struct interface *ifp;
 196   struct in_addr v4;
 197 #ifdef HAVE_IPV6
 198   struct in6_addr v6_global;
 199   struct in6_addr v6_local;
 200 #endif /* HAVE_IPV6 */
 201 };
 202
 203 /* BGP router distinguisher value.  */
 204 #define BGP_RD_SIZE                8
 205
 206 struct bgp_rd
 207 {
 208   u_char val[BGP_RD_SIZE];
 209 };
 210
 211 #define RMAP_IN           0
 212 #define RMAP_OUT        1
 213 #define RMAP_IMPORT   2
 214 #define RMAP_EXPORT   3
 215 #define RMAP_MAX        4
 216
 217 /* BGP filter structure. */
 218 struct bgp_filter
 219 {
 220   /* Distribute-list.  */
 221   struct
 222   {
 223     char *name;
 224     struct access_list *alist;
 225   } dlist[FILTER_MAX];
 226
 227   /* Prefix-list.  */
 228   struct
 229   {
 230     char *name;
 231     struct prefix_list *plist;
 232   } plist[FILTER_MAX];
 233
 234   /* Filter-list.  */
 235   struct
 236   {
 237     char *name;
 238     struct as_list *aslist;
 239   } aslist[FILTER_MAX];
 240
 241   /* Route-map.  */
 242   struct
 243   {
 244     char *name;
 245     struct route_map *map;
 246   } map[RMAP_MAX];
 247
 248   /* Unsuppress-map.  */
 249   struct
 250   {
 251     char *name;
 252     struct route_map *map;
 253   } usmap;
 254 };
 255
 256 /* BGP neighbor structure. */
 257 struct peer
 258 {
 259   /* BGP structure.  */
 260   struct bgp *bgp;
 261
 262   /* reference count, primarily to allow bgp_process'ing of route_node's
 263    * to be done after a struct peer is deleted.
 264    *
 265    * named 'lock' for hysterical reasons within Quagga.
 266    */
 267   int lock;
 268
 269   /* BGP peer group.  */
 270   struct peer_group *group;
 271   u_char af_group[AFI_MAX][SAFI_MAX];
 272
 273   /* Peer's remote AS number. */
 274   as_t as;
 275
 276   /* Peer's local AS number. */
 277   as_t local_as;
 278
 279   /* Peer's Change local AS number. */
 280   as_t change_local_as;
 281
 282   /* Remote router ID. */
 283   struct in_addr remote_id;
 284
 285   /* Local router ID. */
 286   struct in_addr local_id;
 287
 288   /* Peer specific RIB when configured as route-server-client. */
 289   struct bgp_table *rib[AFI_MAX][SAFI_MAX];
 290
 291   /* Packet receive and send buffer. */
 292   struct stream *ibuf;
 293   struct stream_fifo *obuf;
 294   struct stream *work;
 295
 296   /* Status of the peer. */
 297   int status;
 298   int ostatus;
 299
 300   /* Peer index, used for dumping TABLE_DUMP_V2 format */
 301   uint16_t table_dump_index;
 302
 303   /* Peer information */
 304   int fd;                       /* File descriptor */
 305   int ttl;                      /* TTL of TCP connection to the peer. */
 306   char *desc;                   /* Description of the peer. */
 307   unsigned short port;          /* Destination port for peer */
 308   char *host;                   /* Printable address of the peer. */
 309   union sockunion su;           /* Sockunion address of the peer. */
 310   time_t uptime;                /* Last Up/Down time */
 311   time_t readtime;              /* Last read time */
 312   time_t resettime;             /* Last reset time */
 313
 314   unsigned int ifindex;         /* ifindex of the BGP connection. */
 315   char *ifname;                 /* bind interface name. */
 316   char *update_if;
 317   union sockunion *update_source;
 318   struct zlog *log;
 319
 320   union sockunion *su_local;    /* Sockunion of local address.  */
 321   union sockunion *su_remote;   /* Sockunion of remote address.  */
 322   int shared_network;           /* Is this peer shared same network. */
 323   struct bgp_nexthop nexthop;   /* Nexthop */
 324
 325   /* Peer address family configuration. */
 326   u_char afc[AFI_MAX][SAFI_MAX];
 327   u_char afc_nego[AFI_MAX][SAFI_MAX];
 328   u_char afc_adv[AFI_MAX][SAFI_MAX];
 329   u_char afc_recv[AFI_MAX][SAFI_MAX];
 330
 331   /* Capability flags (reset in bgp_stop) */
 332   u_int16_t cap;
 333 #define PEER_CAP_REFRESH_ADV                (1 << 0) /* refresh advertised */
 334 #define PEER_CAP_REFRESH_OLD_RCV            (1 << 1) /* refresh old received */
 335 #define PEER_CAP_REFRESH_NEW_RCV            (1 << 2) /* refresh rfc received */
 336 #define PEER_CAP_DYNAMIC_ADV                (1 << 3) /* dynamic advertised */
 337 #define PEER_CAP_DYNAMIC_RCV                (1 << 4) /* dynamic received */
 338 #define PEER_CAP_RESTART_ADV                (1 << 5) /* restart advertised */
 339 #define PEER_CAP_RESTART_RCV                (1 << 6) /* restart received */
 340 #define PEER_CAP_AS4_ADV                    (1 << 7) /* as4 advertised */
 341 #define PEER_CAP_AS4_RCV                    (1 << 8) /* as4 received */
 342
 343   /* Capability flags (reset in bgp_stop) */
 344   u_int16_t af_cap[AFI_MAX][SAFI_MAX];
 345 #define PEER_CAP_ORF_PREFIX_SM_ADV          (1 << 0) /* send-mode advertised */
 346 #define PEER_CAP_ORF_PREFIX_RM_ADV          (1 << 1) /* receive-mode advertised */
 347 #define PEER_CAP_ORF_PREFIX_SM_RCV          (1 << 2) /* send-mode received */
 348 #define PEER_CAP_ORF_PREFIX_RM_RCV          (1 << 3) /* receive-mode received */
 349 #define PEER_CAP_ORF_PREFIX_SM_OLD_RCV      (1 << 4) /* send-mode received */
 350 #define PEER_CAP_ORF_PREFIX_RM_OLD_RCV      (1 << 5) /* receive-mode received */
 351 #define PEER_CAP_RESTART_AF_RCV             (1 << 6) /* graceful restart afi/safi received */
 352 #define PEER_CAP_RESTART_AF_PRESERVE_RCV    (1 << 7) /* graceful restart afi/safi F-bit received */
 353
 354   /* Global configuration flags. */
 355   u_int32_t flags;
 356 #define PEER_FLAG_PASSIVE                   (1 << 0) /* passive mode */
 357 #define PEER_FLAG_SHUTDOWN                  (1 << 1) /* shutdown */
 358 #define PEER_FLAG_DONT_CAPABILITY           (1 << 2) /* dont-capability */
 359 #define PEER_FLAG_OVERRIDE_CAPABILITY       (1 << 3) /* override-capability */
 360 #define PEER_FLAG_STRICT_CAP_MATCH          (1 << 4) /* strict-match */
 361 #define PEER_FLAG_DYNAMIC_CAPABILITY        (1 << 5) /* dynamic capability */
 362 #define PEER_FLAG_DISABLE_CONNECTED_CHECK   (1 << 6) /* disable-connected-check */
 363 #define PEER_FLAG_LOCAL_AS_NO_PREPEND       (1 << 7) /* local-as no-prepend */
 364
 365   /* NSF mode (graceful restart) */
 366   u_char nsf[AFI_MAX][SAFI_MAX];
 367
 368   /* Per AF configuration flags. */
 369   u_int32_t af_flags[AFI_MAX][SAFI_MAX];
 370 #define PEER_FLAG_SEND_COMMUNITY            (1 << 0) /* send-community */
 371 #define PEER_FLAG_SEND_EXT_COMMUNITY        (1 << 1) /* send-community ext. */
 372 #define PEER_FLAG_NEXTHOP_SELF              (1 << 2) /* next-hop-self */
 373 #define PEER_FLAG_REFLECTOR_CLIENT          (1 << 3) /* reflector-client */
 374 #define PEER_FLAG_RSERVER_CLIENT            (1 << 4) /* route-server-client */
 375 #define PEER_FLAG_SOFT_RECONFIG             (1 << 5) /* soft-reconfiguration */
 376 #define PEER_FLAG_AS_PATH_UNCHANGED         (1 << 6) /* transparent-as */
 377 #define PEER_FLAG_NEXTHOP_UNCHANGED         (1 << 7) /* transparent-next-hop */
 378 #define PEER_FLAG_MED_UNCHANGED             (1 << 8) /* transparent-next-hop */
 379 #define PEER_FLAG_DEFAULT_ORIGINATE         (1 << 9) /* default-originate */
 380 #define PEER_FLAG_REMOVE_PRIVATE_AS         (1 << 10) /* remove-private-as */
 381 #define PEER_FLAG_ALLOWAS_IN                (1 << 11) /* set allowas-in */
 382 #define PEER_FLAG_ORF_PREFIX_SM             (1 << 12) /* orf capability send-mode */
 383 #define PEER_FLAG_ORF_PREFIX_RM             (1 << 13) /* orf capability receive-mode */
 384 #define PEER_FLAG_MAX_PREFIX                (1 << 14) /* maximum prefix */
 385 #define PEER_FLAG_MAX_PREFIX_WARNING        (1 << 15) /* maximum prefix warning-only */
 386 #define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED   (1 << 16) /* leave link-local nexthop unchanged */
 387
 388   /* MD5 password */
 389   char *password;
 390
 391   /* default-originate route-map.  */
 392   struct
 393   {
 394     char *name;
 395     struct route_map *map;
 396   } default_rmap[AFI_MAX][SAFI_MAX];
 397
 398   /* Peer status flags. */
 399   u_int16_t sflags;
 400 #define PEER_STATUS_ACCEPT_PEER       (1 << 0) /* accept peer */
 401 #define PEER_STATUS_PREFIX_OVERFLOW   (1 << 1) /* prefix-overflow */
 402 #define PEER_STATUS_CAPABILITY_OPEN   (1 << 2) /* capability open send */
 403 #define PEER_STATUS_HAVE_ACCEPT       (1 << 3) /* accept peer's parent */
 404 #define PEER_STATUS_GROUP             (1 << 4) /* peer-group conf */
 405 #define PEER_STATUS_NSF_MODE          (1 << 5) /* NSF aware peer */
 406 #define PEER_STATUS_NSF_WAIT          (1 << 6) /* wait comeback peer */
 407
 408   /* Peer status af flags (reset in bgp_stop) */
 409   u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
 410 #define PEER_STATUS_ORF_PREFIX_SEND   (1 << 0) /* prefix-list send peer */
 411 #define PEER_STATUS_ORF_WAIT_REFRESH  (1 << 1) /* wait refresh received peer */
 412 #define PEER_STATUS_DEFAULT_ORIGINATE (1 << 2) /* default-originate peer */
 413 #define PEER_STATUS_PREFIX_THRESHOLD  (1 << 3) /* exceed prefix-threshold */
 414 #define PEER_STATUS_PREFIX_LIMIT      (1 << 4) /* exceed prefix-limit */
 415 #define PEER_STATUS_EOR_SEND          (1 << 5) /* end-of-rib send to peer */
 416 #define PEER_STATUS_EOR_RECEIVED      (1 << 6) /* end-of-rib received from peer */
 417
 418   /* Default attribute value for the peer. */
 419   u_int32_t config;
 420 #define PEER_CONFIG_WEIGHT            (1 << 0) /* Default weight. */
 421 #define PEER_CONFIG_TIMER             (1 << 1) /* keepalive & holdtime */
 422 #define PEER_CONFIG_CONNECT           (1 << 2) /* connect */
 423 #define PEER_CONFIG_ROUTEADV          (1 << 3) /* route advertise */
 424   u_int32_t weight;
 425   u_int32_t holdtime;
 426   u_int32_t keepalive;
 427   u_int32_t connect;
 428   u_int32_t routeadv;
 429
 430   /* Timer values. */
 431   u_int32_t v_start;
 432   u_int32_t v_connect;
 433   u_int32_t v_holdtime;
 434   u_int32_t v_keepalive;
 435   u_int32_t v_asorig;
 436   u_int32_t v_routeadv;
 437   u_int32_t v_pmax_restart;
 438   u_int32_t v_gr_restart;
 439
 440   /* Threads. */
 441   struct thread *t_read;
 442   struct thread *t_write;
 443   struct thread *t_start;
 444   struct thread *t_connect;
 445   struct thread *t_holdtime;
 446   struct thread *t_keepalive;
 447   struct thread *t_asorig;
 448   struct thread *t_routeadv;
 449   struct thread *t_pmax_restart;
 450   struct thread *t_gr_restart;
 451   struct thread *t_gr_stale;
 452
 453   /* workqueues */
 454   struct work_queue *clear_node_queue;
 455
 456   /* Statistics field */
 457   u_int32_t open_in;            /* Open message input count */
 458   u_int32_t open_out;           /* Open message output count */
 459   u_int32_t update_in;          /* Update message input count */
 460   u_int32_t update_out;         /* Update message ouput count */
 461   time_t update_time;           /* Update message received time. */
 462   u_int32_t keepalive_in;       /* Keepalive input count */
 463   u_int32_t keepalive_out;      /* Keepalive output count */
 464   u_int32_t notify_in;          /* Notify input count */
 465   u_int32_t notify_out;         /* Notify output count */
 466   u_int32_t refresh_in;         /* Route Refresh input count */
 467   u_int32_t refresh_out;        /* Route Refresh output count */
 468   u_int32_t dynamic_cap_in;     /* Dynamic Capability input count.  */
 469   u_int32_t dynamic_cap_out;    /* Dynamic Capability output count.  */
 470
 471   /* BGP state count */
 472   u_int32_t established;        /* Established */
 473   u_int32_t dropped;            /* Dropped */
 474
 475   /* Syncronization list and time.  */
 476   struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
 477   time_t synctime;
 478
 479   /* Send prefix count. */
 480   unsigned long scount[AFI_MAX][SAFI_MAX];
 481
 482   /* Announcement attribute hash.  */
 483   struct hash *hash[AFI_MAX][SAFI_MAX];
 484
 485   /* Notify data. */
 486   struct bgp_notify notify;
 487
 488   /* Whole packet size to be read. */
 489   unsigned long packet_size;
 490
 491   /* Filter structure. */
 492   struct bgp_filter filter[AFI_MAX][SAFI_MAX];
 493
 494   /* ORF Prefix-list */
 495   struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
 496
 497   /* Prefix count. */
 498   unsigned long pcount[AFI_MAX][SAFI_MAX];
 499
 500   /* Max prefix count. */
 501   unsigned long pmax[AFI_MAX][SAFI_MAX];
 502   u_char pmax_threshold[AFI_MAX][SAFI_MAX];
 503   u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
 504 #define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
 505
 506   /* allowas-in. */
 507   char allowas_in[AFI_MAX][SAFI_MAX];
 508
 509   /* peer reset cause */
 510   char last_reset;
 511 #define PEER_DOWN_RID_CHANGE             1 /* bgp router-id command */
 512 #define PEER_DOWN_REMOTE_AS_CHANGE       2 /* neighbor remote-as command */
 513 #define PEER_DOWN_LOCAL_AS_CHANGE        3 /* neighbor local-as command */
 514 #define PEER_DOWN_CLID_CHANGE            4 /* bgp cluster-id command */
 515 #define PEER_DOWN_CONFED_ID_CHANGE       5 /* bgp confederation identifier command */
 516 #define PEER_DOWN_CONFED_PEER_CHANGE     6 /* bgp confederation peer command */
 517 #define PEER_DOWN_RR_CLIENT_CHANGE       7 /* neighbor route-reflector-client command */
 518 #define PEER_DOWN_RS_CLIENT_CHANGE       8 /* neighbor route-server-client command */
 519 #define PEER_DOWN_UPDATE_SOURCE_CHANGE   9 /* neighbor update-source command */
 520 #define PEER_DOWN_AF_ACTIVATE           10 /* neighbor activate command */
 521 #define PEER_DOWN_USER_SHUTDOWN         11 /* neighbor shutdown command */
 522 #define PEER_DOWN_USER_RESET            12 /* clear ip bgp command */
 523 #define PEER_DOWN_NOTIFY_RECEIVED       13 /* notification received */
 524 #define PEER_DOWN_NOTIFY_SEND           14 /* notification send */
 525 #define PEER_DOWN_CLOSE_SESSION         15 /* tcp session close */
 526 #define PEER_DOWN_NEIGHBOR_DELETE       16 /* neghbor delete */
 527 #define PEER_DOWN_RMAP_BIND             17 /* neghbor peer-group command */
 528 #define PEER_DOWN_RMAP_UNBIND           18 /* no neighbor peer-group command */
 529 #define PEER_DOWN_CAPABILITY_CHANGE     19 /* neighbor capability command */
 530 #define PEER_DOWN_PASSIVE_CHANGE        20 /* neighbor passive command */
 531 #define PEER_DOWN_MULTIHOP_CHANGE       21 /* neighbor multihop command */
 532 #define PEER_DOWN_NSF_CLOSE_SESSION     22 /* NSF tcp session close */
 533
 534   /* The kind of route-map Flags.*/
 535   u_char rmap_type;
 536 #define PEER_RMAP_TYPE_IN             (1 << 0) /* neighbor route-map in */
 537 #define PEER_RMAP_TYPE_OUT            (1 << 1) /* neighbor route-map out */
 538 #define PEER_RMAP_TYPE_NETWORK        (1 << 2) /* network route-map */
 539 #define PEER_RMAP_TYPE_REDISTRIBUTE   (1 << 3) /* redistribute route-map */
 540 #define PEER_RMAP_TYPE_DEFAULT        (1 << 4) /* default-originate route-map */
 541 #define PEER_RMAP_TYPE_NOSET          (1 << 5) /* not allow to set commands */
 542 #define PEER_RMAP_TYPE_IMPORT         (1 << 6) /* neighbor route-map import */
 543 #define PEER_RMAP_TYPE_EXPORT         (1 << 7) /* neighbor route-map export */
 544 };
 545
 546 #define PEER_PASSWORD_MINLEN    (1)
 547 #define PEER_PASSWORD_MAXLEN    (80)
 548
 549 /* This structure's member directly points incoming packet data
 550    stream. */
 551 struct bgp_nlri
 552 {
 553   /* AFI.  */
 554   afi_t afi;
 555
 556   /* SAFI.  */
 557   safi_t safi;
 558
 559   /* Pointer to NLRI byte stream.  */
 560   u_char *nlri;
 561
 562   /* Length of whole NLRI.  */
 563   bgp_size_t length;
 564 };
 565
 566 /* BGP versions.  */
 567 #define BGP_VERSION_4                            4
 568
 569 /* Default BGP port number.  */
 570 #define BGP_PORT_DEFAULT                       179
 571
 572 /* BGP message header and packet size.  */
 573 #define BGP_MARKER_SIZE                         16
 574 #define BGP_HEADER_SIZE                         19
 575 #define BGP_MAX_PACKET_SIZE                   4096
 576
 577 /* BGP minimum message size.  */
 578 #define BGP_MSG_OPEN_MIN_SIZE                   (BGP_HEADER_SIZE + 10)
 579 #define BGP_MSG_UPDATE_MIN_SIZE                 (BGP_HEADER_SIZE + 4)
 580 #define BGP_MSG_NOTIFY_MIN_SIZE                 (BGP_HEADER_SIZE + 2)
 581 #define BGP_MSG_KEEPALIVE_MIN_SIZE              (BGP_HEADER_SIZE + 0)
 582 #define BGP_MSG_ROUTE_REFRESH_MIN_SIZE          (BGP_HEADER_SIZE + 4)
 583 #define BGP_MSG_CAPABILITY_MIN_SIZE             (BGP_HEADER_SIZE + 3)
 584
 585 /* BGP message types.  */
 586 #define BGP_MSG_OPEN                             1
 587 #define BGP_MSG_UPDATE                           2
 588 #define BGP_MSG_NOTIFY                           3
 589 #define BGP_MSG_KEEPALIVE                        4
 590 #define BGP_MSG_ROUTE_REFRESH_NEW                5
 591 #define BGP_MSG_CAPABILITY                       6
 592 #define BGP_MSG_ROUTE_REFRESH_OLD              128
 593
 594 /* BGP open optional parameter.  */
 595 #define BGP_OPEN_OPT_AUTH                        1
 596 #define BGP_OPEN_OPT_CAP                         2
 597
 598 /* BGP4 attribute type codes.  */
 599 #define BGP_ATTR_ORIGIN                          1
 600 #define BGP_ATTR_AS_PATH                         2
 601 #define BGP_ATTR_NEXT_HOP                        3
 602 #define BGP_ATTR_MULTI_EXIT_DISC                 4
 603 #define BGP_ATTR_LOCAL_PREF                      5
 604 #define BGP_ATTR_ATOMIC_AGGREGATE                6
 605 #define BGP_ATTR_AGGREGATOR                      7
 606 #define BGP_ATTR_COMMUNITIES                     8
 607 #define BGP_ATTR_ORIGINATOR_ID                   9
 608 #define BGP_ATTR_CLUSTER_LIST                   10
 609 #define BGP_ATTR_DPA                            11
 610 #define BGP_ATTR_ADVERTISER                     12
 611 #define BGP_ATTR_RCID_PATH                      13
 612 #define BGP_ATTR_MP_REACH_NLRI                  14
 613 #define BGP_ATTR_MP_UNREACH_NLRI                15
 614 #define BGP_ATTR_EXT_COMMUNITIES                16
 615 #define BGP_ATTR_AS4_PATH                       17
 616 #define BGP_ATTR_AS4_AGGREGATOR                 18
 617 #define BGP_ATTR_AS_PATHLIMIT                   21
 618
 619 /* BGP update origin.  */
 620 #define BGP_ORIGIN_IGP                           0
 621 #define BGP_ORIGIN_EGP                           1
 622 #define BGP_ORIGIN_INCOMPLETE                    2
 623
 624 /* BGP notify message codes.  */
 625 #define BGP_NOTIFY_HEADER_ERR                    1
 626 #define BGP_NOTIFY_OPEN_ERR                      2
 627 #define BGP_NOTIFY_UPDATE_ERR                    3
 628 #define BGP_NOTIFY_HOLD_ERR                      4
 629 #define BGP_NOTIFY_FSM_ERR                       5
 630 #define BGP_NOTIFY_CEASE                         6
 631 #define BGP_NOTIFY_CAPABILITY_ERR                7
 632 #define BGP_NOTIFY_MAX                           8
 633
 634 /* BGP_NOTIFY_HEADER_ERR sub codes.  */
 635 #define BGP_NOTIFY_HEADER_NOT_SYNC               1
 636 #define BGP_NOTIFY_HEADER_BAD_MESLEN             2
 637 #define BGP_NOTIFY_HEADER_BAD_MESTYPE            3
 638 #define BGP_NOTIFY_HEADER_MAX                    4
 639
 640 /* BGP_NOTIFY_OPEN_ERR sub codes.  */
 641 #define BGP_NOTIFY_OPEN_UNSUP_VERSION            1
 642 #define BGP_NOTIFY_OPEN_BAD_PEER_AS              2
 643 #define BGP_NOTIFY_OPEN_BAD_BGP_IDENT            3
 644 #define BGP_NOTIFY_OPEN_UNSUP_PARAM              4
 645 #define BGP_NOTIFY_OPEN_AUTH_FAILURE             5
 646 #define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME          6
 647 #define BGP_NOTIFY_OPEN_UNSUP_CAPBL              7
 648 #define BGP_NOTIFY_OPEN_MAX                      8
 649
 650 /* BGP_NOTIFY_UPDATE_ERR sub codes.  */
 651 #define BGP_NOTIFY_UPDATE_MAL_ATTR               1
 652 #define BGP_NOTIFY_UPDATE_UNREC_ATTR             2
 653 #define BGP_NOTIFY_UPDATE_MISS_ATTR              3
 654 #define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR          4
 655 #define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR          5
 656 #define BGP_NOTIFY_UPDATE_INVAL_ORIGIN           6
 657 #define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP          7
 658 #define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP         8
 659 #define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR           9
 660 #define BGP_NOTIFY_UPDATE_INVAL_NETWORK         10
 661 #define BGP_NOTIFY_UPDATE_MAL_AS_PATH           11
 662 #define BGP_NOTIFY_UPDATE_MAX                   12
 663
 664 /* BGP_NOTIFY_CEASE sub codes (draft-ietf-idr-cease-subcode-05).  */
 665 #define BGP_NOTIFY_CEASE_MAX_PREFIX              1
 666 #define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN          2
 667 #define BGP_NOTIFY_CEASE_PEER_UNCONFIG           3
 668 #define BGP_NOTIFY_CEASE_ADMIN_RESET             4
 669 #define BGP_NOTIFY_CEASE_CONNECT_REJECT          5
 670 #define BGP_NOTIFY_CEASE_CONFIG_CHANGE           6
 671 #define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION    7
 672 #define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE         8
 673 #define BGP_NOTIFY_CEASE_MAX                     9
 674
 675 /* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
 676 #define BGP_NOTIFY_CAPABILITY_INVALID_ACTION     1
 677 #define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH     2
 678 #define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE     3
 679 #define BGP_NOTIFY_CAPABILITY_MAX                4
 680
 681 /* BGP finite state machine status.  */
 682 #define Idle                                     1
 683 #define Connect                                  2
 684 #define Active                                   3
 685 #define OpenSent                                 4
 686 #define OpenConfirm                              5
 687 #define Established                              6
 688 #define Clearing                                 7
 689 #define Deleted                                  8
 690 #define BGP_STATUS_MAX                           9
 691
 692 /* BGP finite state machine events.  */
 693 #define BGP_Start                                1
 694 #define BGP_Stop                                 2
 695 #define TCP_connection_open                      3
 696 #define TCP_connection_closed                    4
 697 #define TCP_connection_open_failed               5
 698 #define TCP_fatal_error                          6
 699 #define ConnectRetry_timer_expired               7
 700 #define Hold_Timer_expired                       8
 701 #define KeepAlive_timer_expired                  9
 702 #define Receive_OPEN_message                    10
 703 #define Receive_KEEPALIVE_message               11
 704 #define Receive_UPDATE_message                  12
 705 #define Receive_NOTIFICATION_message            13
 706 #define Clearing_Completed                      14
 707 #define BGP_EVENTS_MAX                          15
 708
 709 /* BGP timers default value.  */
 710 #define BGP_INIT_START_TIMER                     5
 711 #define BGP_ERROR_START_TIMER                   30
 712 #define BGP_DEFAULT_HOLDTIME                   180
 713 #define BGP_DEFAULT_KEEPALIVE                   60
 714 #define BGP_DEFAULT_ASORIGINATE                 15
 715 #define BGP_DEFAULT_EBGP_ROUTEADV               30
 716 #define BGP_DEFAULT_IBGP_ROUTEADV                5
 717 #define BGP_CLEAR_CONNECT_RETRY                 20
 718 #define BGP_DEFAULT_CONNECT_RETRY              120
 719
 720 /* BGP default local preference.  */
 721 #define BGP_DEFAULT_LOCAL_PREF                 100
 722
 723 /* BGP graceful restart  */
 724 #define BGP_DEFAULT_RESTART_TIME               120
 725 #define BGP_DEFAULT_STALEPATH_TIME             360
 726
 727 /* SAFI which used in open capability negotiation.  */
 728 #define BGP_SAFI_VPNV4                         128
 729 #define BGP_SAFI_VPNV6                         129
 730
 731 /* Max TTL value.  */
 732 #define TTL_MAX                                255
 733
 734 /* BGP uptime string length.  */
 735 #define BGP_UPTIME_LEN 25
 736
 737 /* Default configuration settings for bgpd.  */
 738 #define BGP_VTY_PORT                          2605
 739 #define BGP_DEFAULT_CONFIG             "bgpd.conf"
 740
 741 /* Check AS path loop when we send NLRI.  */
 742 /* #define BGP_SEND_ASPATH_CHECK */
 743
 744 /* IBGP/EBGP identifier.  We also have a CONFED peer, which is to say,
 745    a peer who's AS is part of our Confederation.  */
 746 enum
 747 {
 748   BGP_PEER_IBGP,
 749   BGP_PEER_EBGP,
 750   BGP_PEER_INTERNAL,
 751   BGP_PEER_CONFED
 752 };
 753
 754 /* Flag for peer_clear_soft().  */
 755 enum bgp_clear_type
 756 {
 757   BGP_CLEAR_SOFT_NONE,
 758   BGP_CLEAR_SOFT_OUT,
 759   BGP_CLEAR_SOFT_IN,
 760   BGP_CLEAR_SOFT_BOTH,
 761   BGP_CLEAR_SOFT_IN_ORF_PREFIX,
 762   BGP_CLEAR_SOFT_RSCLIENT
 763 };
 764
 765 /* Macros. */
 766 #define BGP_INPUT(P)         ((P)->ibuf)
 767 #define BGP_INPUT_PNT(P)     (STREAM_PNT(BGP_INPUT(P)))
 768
 769 /* Count prefix size from mask length */
 770 #define PSIZE(a) (((a) + 7) / (8))
 771
 772 /* BGP error codes.  */
 773 #define BGP_SUCCESS                               0
 774 #define BGP_ERR_INVALID_VALUE                    -1
 775 #define BGP_ERR_INVALID_FLAG                     -2
 776 #define BGP_ERR_INVALID_AS                       -3
 777 #define BGP_ERR_INVALID_BGP                      -4
 778 #define BGP_ERR_PEER_GROUP_MEMBER                -5
 779 #define BGP_ERR_MULTIPLE_INSTANCE_USED           -6
 780 #define BGP_ERR_PEER_GROUP_MEMBER_EXISTS         -7
 781 #define BGP_ERR_PEER_BELONGS_TO_GROUP            -8
 782 #define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED       -9
 783 #define BGP_ERR_PEER_GROUP_NO_REMOTE_AS         -10
 784 #define BGP_ERR_PEER_GROUP_CANT_CHANGE          -11
 785 #define BGP_ERR_PEER_GROUP_MISMATCH             -12
 786 #define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT  -13
 787 #define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET       -14
 788 #define BGP_ERR_AS_MISMATCH                     -15
 789 #define BGP_ERR_PEER_INACTIVE                   -16
 790 #define BGP_ERR_INVALID_FOR_PEER_GROUP_MEMBER   -17
 791 #define BGP_ERR_PEER_GROUP_HAS_THE_FLAG         -18
 792 #define BGP_ERR_PEER_FLAG_CONFLICT              -19
 793 #define BGP_ERR_PEER_GROUP_SHUTDOWN             -20
 794 #define BGP_ERR_PEER_FILTER_CONFLICT            -21
 795 #define BGP_ERR_NOT_INTERNAL_PEER               -22
 796 #define BGP_ERR_REMOVE_PRIVATE_AS               -23
 797 #define BGP_ERR_AF_UNCONFIGURED                 -24
 798 #define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED      -25
 799 #define BGP_ERR_INSTANCE_MISMATCH               -26
 800 #define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP  -27
 801 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS    -28
 802 #define BGP_ERR_TCPSIG_FAILED                   -29
 803 #define BGP_ERR_MAX                             -30
 804
 805 extern struct bgp_master *bm;
 806
 807 extern struct thread_master *master;
 808
 809 /* Prototypes. */
 810 extern void bgp_terminate (void);
 811 extern void bgp_reset (void);
 812 extern time_t bgp_clock (void);
 813 extern void bgp_zclient_reset (void);
 814 extern int bgp_nexthop_set (union sockunion *, union sockunion *,
 815                      struct bgp_nexthop *, struct peer *);
 816 extern struct bgp *bgp_get_default (void);
 817 extern struct bgp *bgp_lookup (as_t, const char *);
 818 extern struct bgp *bgp_lookup_by_name (const char *);
 819 extern struct peer *peer_lookup (struct bgp *, union sockunion *);
 820 extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
 821 extern struct peer_group *peer_group_get (struct bgp *, const char *);
 822 extern struct peer *peer_lookup_with_open (union sockunion *, as_t, struct in_addr *,
 823                                     int *);
 824 extern struct peer *peer_lock (struct peer *);
 825 extern struct peer *peer_unlock (struct peer *);
 826 extern int peer_sort (struct peer *peer);
 827 extern int peer_active (struct peer *);
 828 extern int peer_active_nego (struct peer *);
 829 extern struct peer *peer_create_accept (struct bgp *);
 830 extern char *peer_uptime (time_t, char *, size_t);
 831 extern int bgp_config_write (struct vty *);
 832 extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
 833 \f
 834 extern void bgp_master_init (void);
 835
 836 extern void bgp_init (void);
 837 extern void bgp_route_map_init (void);
 838
 839 extern int bgp_option_set (int);
 840 extern int bgp_option_unset (int);
 841 extern int bgp_option_check (int);
 842
 843 extern int bgp_get (struct bgp **, as_t *, const char *);
 844 extern int bgp_delete (struct bgp *);
 845
 846 extern int bgp_flag_set (struct bgp *, int);
 847 extern int bgp_flag_unset (struct bgp *, int);
 848 extern int bgp_flag_check (struct bgp *, int);
 849
 850 extern void bgp_lock (struct bgp *);
 851 extern void bgp_unlock (struct bgp *);
 852
 853 extern int bgp_router_id_set (struct bgp *, struct in_addr *);
 854
 855 extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
 856 extern int bgp_cluster_id_unset (struct bgp *);
 857
 858 extern int bgp_confederation_id_set (struct bgp *, as_t);
 859 extern int bgp_confederation_id_unset (struct bgp *);
 860 extern int bgp_confederation_peers_check (struct bgp *, as_t);
 861
 862 extern int bgp_confederation_peers_add (struct bgp *, as_t);
 863 extern int bgp_confederation_peers_remove (struct bgp *, as_t);
 864
 865 extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
 866 extern int bgp_timers_unset (struct bgp *);
 867
 868 extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
 869 extern int bgp_default_local_preference_unset (struct bgp *);
 870
 871 extern int peer_rsclient_active (struct peer *);
 872
 873 extern int peer_remote_as (struct bgp *, union sockunion *, as_t *, afi_t, safi_t);
 874 extern int peer_group_remote_as (struct bgp *, const char *, as_t *);
 875 extern int peer_delete (struct peer *peer);
 876 extern int peer_group_delete (struct peer_group *);
 877 extern int peer_group_remote_as_delete (struct peer_group *);
 878
 879 extern int peer_activate (struct peer *, afi_t, safi_t);
 880 extern int peer_deactivate (struct peer *, afi_t, safi_t);
 881
 882 extern int peer_group_bind (struct bgp *, union sockunion *, struct peer_group *,
 883                      afi_t, safi_t, as_t *);
 884 extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
 885                        afi_t, safi_t);
 886
 887 extern int peer_flag_set (struct peer *, u_int32_t);
 888 extern int peer_flag_unset (struct peer *, u_int32_t);
 889
 890 extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
 891 extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
 892 extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
 893
 894 extern int peer_ebgp_multihop_set (struct peer *, int);
 895 extern int peer_ebgp_multihop_unset (struct peer *);
 896
 897 extern int peer_description_set (struct peer *, char *);
 898 extern int peer_description_unset (struct peer *);
 899
 900 extern int peer_update_source_if_set (struct peer *, const char *);
 901 extern int peer_update_source_addr_set (struct peer *, union sockunion *);
 902 extern int peer_update_source_unset (struct peer *);
 903
 904 extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
 905 extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
 906
 907 extern int peer_port_set (struct peer *, u_int16_t);
 908 extern int peer_port_unset (struct peer *);
 909
 910 extern int peer_weight_set (struct peer *, u_int16_t);
 911 extern int peer_weight_unset (struct peer *);
 912
 913 extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
 914 extern int peer_timers_unset (struct peer *);
 915
 916 extern int peer_timers_connect_set (struct peer *, u_int32_t);
 917 extern int peer_timers_connect_unset (struct peer *);
 918
 919 extern int peer_advertise_interval_set (struct peer *, u_int32_t);
 920 extern int peer_advertise_interval_unset (struct peer *);
 921
 922 extern int peer_interface_set (struct peer *, const char *);
 923 extern int peer_interface_unset (struct peer *);
 924
 925 extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
 926 extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
 927
 928 extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
 929 extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
 930
 931 extern int peer_local_as_set (struct peer *, as_t, int);
 932 extern int peer_local_as_unset (struct peer *);
 933
 934 extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
 935 extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
 936
 937 extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
 938 extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
 939
 940 extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
 941 extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
 942
 943 extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
 944
 945 extern int peer_password_set (struct peer *, const char *);
 946 extern int peer_password_unset (struct peer *);
 947
 948 extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
 949
 950 extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
 951 extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
 952
 953 extern int peer_clear (struct peer *);
 954 extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
 955
 956 #endif /* _QUAGGA_BGPD_H */