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   /* Maximum-paths configuration */
 167   struct bgp_maxpaths_cfg {
 168     u_int16_t maxpaths_ebgp;
 169     u_int16_t maxpaths_ibgp;
 170   } maxpaths[AFI_MAX][SAFI_MAX];
 171 };
 172
 173 /* BGP peer-group support. */
 174 struct peer_group
 175 {
 176   /* Name of the peer-group. */
 177   char *name;
 178
 179   /* Pointer to BGP.  */
 180   struct bgp *bgp;
 181
 182   /* Peer-group client list. */
 183   struct list *peer;
 184
 185   /* Peer-group config */
 186   struct peer *conf;
 187 };
 188
 189 /* BGP Notify message format. */
 190 struct bgp_notify
 191 {
 192   u_char code;
 193   u_char subcode;
 194   char *data;
 195   bgp_size_t length;
 196 };
 197
 198 /* Next hop self address. */
 199 struct bgp_nexthop
 200 {
 201   struct interface *ifp;
 202   struct in_addr v4;
 203 #ifdef HAVE_IPV6
 204   struct in6_addr v6_global;
 205   struct in6_addr v6_local;
 206 #endif /* HAVE_IPV6 */
 207 };
 208
 209 /* BGP router distinguisher value.  */
 210 #define BGP_RD_SIZE                8
 211
 212 struct bgp_rd
 213 {
 214   u_char val[BGP_RD_SIZE];
 215 };
 216
 217 #define RMAP_IN           0
 218 #define RMAP_OUT        1
 219 #define RMAP_IMPORT   2
 220 #define RMAP_EXPORT   3
 221 #define RMAP_MAX        4
 222
 223 /* BGP filter structure. */
 224 struct bgp_filter
 225 {
 226   /* Distribute-list.  */
 227   struct
 228   {
 229     char *name;
 230     struct access_list *alist;
 231   } dlist[FILTER_MAX];
 232
 233   /* Prefix-list.  */
 234   struct
 235   {
 236     char *name;
 237     struct prefix_list *plist;
 238   } plist[FILTER_MAX];
 239
 240   /* Filter-list.  */
 241   struct
 242   {
 243     char *name;
 244     struct as_list *aslist;
 245   } aslist[FILTER_MAX];
 246
 247   /* Route-map.  */
 248   struct
 249   {
 250     char *name;
 251     struct route_map *map;
 252   } map[RMAP_MAX];
 253
 254   /* Unsuppress-map.  */
 255   struct
 256   {
 257     char *name;
 258     struct route_map *map;
 259   } usmap;
 260 };
 261
 262 /* IBGP/EBGP identifier.  We also have a CONFED peer, which is to say,
 263    a peer who's AS is part of our Confederation.  */
 264 typedef enum
 265 {
 266   BGP_PEER_IBGP = 1,
 267   BGP_PEER_EBGP,
 268   BGP_PEER_INTERNAL,
 269   BGP_PEER_CONFED,
 270 } bgp_peer_sort_t;
 271
 272 /* BGP neighbor structure. */
 273 struct peer
 274 {
 275   /* BGP structure.  */
 276   struct bgp *bgp;
 277
 278   /* reference count, primarily to allow bgp_process'ing of route_node's
 279    * to be done after a struct peer is deleted.
 280    *
 281    * named 'lock' for hysterical reasons within Quagga.
 282    */
 283   int lock;
 284
 285   /* BGP peer group.  */
 286   struct peer_group *group;
 287   u_char af_group[AFI_MAX][SAFI_MAX];
 288
 289   /* Peer's remote AS number. */
 290   as_t as;
 291
 292   /* Peer's local AS number. */
 293   as_t local_as;
 294
 295   bgp_peer_sort_t sort;
 296
 297   /* Peer's Change local AS number. */
 298   as_t change_local_as;
 299
 300   /* Remote router ID. */
 301   struct in_addr remote_id;
 302
 303   /* Local router ID. */
 304   struct in_addr local_id;
 305
 306   /* Peer specific RIB when configured as route-server-client. */
 307   struct bgp_table *rib[AFI_MAX][SAFI_MAX];
 308
 309   /* Packet receive and send buffer. */
 310   struct stream *ibuf;
 311   struct stream_fifo *obuf;
 312   struct stream *work;
 313
 314   /* Status of the peer. */
 315   int status;
 316   int ostatus;
 317
 318   /* Peer index, used for dumping TABLE_DUMP_V2 format */
 319   uint16_t table_dump_index;
 320
 321   /* Peer information */
 322   int fd;                       /* File descriptor */
 323   int ttl;                      /* TTL of TCP connection to the peer. */
 324   int gtsm_hops;                /* minimum hopcount to peer */
 325   char *desc;                   /* Description of the peer. */
 326   unsigned short port;          /* Destination port for peer */
 327   char *host;                   /* Printable address of the peer. */
 328   union sockunion su;           /* Sockunion address of the peer. */
 329   time_t uptime;                /* Last Up/Down time */
 330   time_t readtime;              /* Last read time */
 331   time_t resettime;             /* Last reset time */
 332
 333   unsigned int ifindex;         /* ifindex of the BGP connection. */
 334   char *ifname;                 /* bind interface name. */
 335   char *update_if;
 336   union sockunion *update_source;
 337   struct zlog *log;
 338
 339   union sockunion *su_local;    /* Sockunion of local address.  */
 340   union sockunion *su_remote;   /* Sockunion of remote address.  */
 341   int shared_network;           /* Is this peer shared same network. */
 342   struct bgp_nexthop nexthop;   /* Nexthop */
 343
 344   /* Peer address family configuration. */
 345   u_char afc[AFI_MAX][SAFI_MAX];
 346   u_char afc_nego[AFI_MAX][SAFI_MAX];
 347   u_char afc_adv[AFI_MAX][SAFI_MAX];
 348   u_char afc_recv[AFI_MAX][SAFI_MAX];
 349
 350   /* Capability flags (reset in bgp_stop) */
 351   u_int16_t cap;
 352 #define PEER_CAP_REFRESH_ADV                (1 << 0) /* refresh advertised */
 353 #define PEER_CAP_REFRESH_OLD_RCV            (1 << 1) /* refresh old received */
 354 #define PEER_CAP_REFRESH_NEW_RCV            (1 << 2) /* refresh rfc received */
 355 #define PEER_CAP_DYNAMIC_ADV                (1 << 3) /* dynamic advertised */
 356 #define PEER_CAP_DYNAMIC_RCV                (1 << 4) /* dynamic received */
 357 #define PEER_CAP_RESTART_ADV                (1 << 5) /* restart advertised */
 358 #define PEER_CAP_RESTART_RCV                (1 << 6) /* restart received */
 359 #define PEER_CAP_AS4_ADV                    (1 << 7) /* as4 advertised */
 360 #define PEER_CAP_AS4_RCV                    (1 << 8) /* as4 received */
 361
 362   /* Capability flags (reset in bgp_stop) */
 363   u_int16_t af_cap[AFI_MAX][SAFI_MAX];
 364 #define PEER_CAP_ORF_PREFIX_SM_ADV          (1 << 0) /* send-mode advertised */
 365 #define PEER_CAP_ORF_PREFIX_RM_ADV          (1 << 1) /* receive-mode advertised */
 366 #define PEER_CAP_ORF_PREFIX_SM_RCV          (1 << 2) /* send-mode received */
 367 #define PEER_CAP_ORF_PREFIX_RM_RCV          (1 << 3) /* receive-mode received */
 368 #define PEER_CAP_ORF_PREFIX_SM_OLD_RCV      (1 << 4) /* send-mode received */
 369 #define PEER_CAP_ORF_PREFIX_RM_OLD_RCV      (1 << 5) /* receive-mode received */
 370 #define PEER_CAP_RESTART_AF_RCV             (1 << 6) /* graceful restart afi/safi received */
 371 #define PEER_CAP_RESTART_AF_PRESERVE_RCV    (1 << 7) /* graceful restart afi/safi F-bit received */
 372
 373   /* Global configuration flags. */
 374   u_int32_t flags;
 375 #define PEER_FLAG_PASSIVE                   (1 << 0) /* passive mode */
 376 #define PEER_FLAG_SHUTDOWN                  (1 << 1) /* shutdown */
 377 #define PEER_FLAG_DONT_CAPABILITY           (1 << 2) /* dont-capability */
 378 #define PEER_FLAG_OVERRIDE_CAPABILITY       (1 << 3) /* override-capability */
 379 #define PEER_FLAG_STRICT_CAP_MATCH          (1 << 4) /* strict-match */
 380 #define PEER_FLAG_DYNAMIC_CAPABILITY        (1 << 5) /* dynamic capability */
 381 #define PEER_FLAG_DISABLE_CONNECTED_CHECK   (1 << 6) /* disable-connected-check */
 382 #define PEER_FLAG_LOCAL_AS_NO_PREPEND       (1 << 7) /* local-as no-prepend */
 383
 384   /* NSF mode (graceful restart) */
 385   u_char nsf[AFI_MAX][SAFI_MAX];
 386
 387   /* Per AF configuration flags. */
 388   u_int32_t af_flags[AFI_MAX][SAFI_MAX];
 389 #define PEER_FLAG_SEND_COMMUNITY            (1 << 0) /* send-community */
 390 #define PEER_FLAG_SEND_EXT_COMMUNITY        (1 << 1) /* send-community ext. */
 391 #define PEER_FLAG_NEXTHOP_SELF              (1 << 2) /* next-hop-self */
 392 #define PEER_FLAG_REFLECTOR_CLIENT          (1 << 3) /* reflector-client */
 393 #define PEER_FLAG_RSERVER_CLIENT            (1 << 4) /* route-server-client */
 394 #define PEER_FLAG_SOFT_RECONFIG             (1 << 5) /* soft-reconfiguration */
 395 #define PEER_FLAG_AS_PATH_UNCHANGED         (1 << 6) /* transparent-as */
 396 #define PEER_FLAG_NEXTHOP_UNCHANGED         (1 << 7) /* transparent-next-hop */
 397 #define PEER_FLAG_MED_UNCHANGED             (1 << 8) /* transparent-next-hop */
 398 #define PEER_FLAG_DEFAULT_ORIGINATE         (1 << 9) /* default-originate */
 399 #define PEER_FLAG_REMOVE_PRIVATE_AS         (1 << 10) /* remove-private-as */
 400 #define PEER_FLAG_ALLOWAS_IN                (1 << 11) /* set allowas-in */
 401 #define PEER_FLAG_ORF_PREFIX_SM             (1 << 12) /* orf capability send-mode */
 402 #define PEER_FLAG_ORF_PREFIX_RM             (1 << 13) /* orf capability receive-mode */
 403 #define PEER_FLAG_MAX_PREFIX                (1 << 14) /* maximum prefix */
 404 #define PEER_FLAG_MAX_PREFIX_WARNING        (1 << 15) /* maximum prefix warning-only */
 405 #define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED   (1 << 16) /* leave link-local nexthop unchanged */
 406
 407   /* MD5 password */
 408   char *password;
 409
 410   /* default-originate route-map.  */
 411   struct
 412   {
 413     char *name;
 414     struct route_map *map;
 415   } default_rmap[AFI_MAX][SAFI_MAX];
 416
 417   /* Peer status flags. */
 418   u_int16_t sflags;
 419 #define PEER_STATUS_ACCEPT_PEER       (1 << 0) /* accept peer */
 420 #define PEER_STATUS_PREFIX_OVERFLOW   (1 << 1) /* prefix-overflow */
 421 #define PEER_STATUS_CAPABILITY_OPEN   (1 << 2) /* capability open send */
 422 #define PEER_STATUS_HAVE_ACCEPT       (1 << 3) /* accept peer's parent */
 423 #define PEER_STATUS_GROUP             (1 << 4) /* peer-group conf */
 424 #define PEER_STATUS_NSF_MODE          (1 << 5) /* NSF aware peer */
 425 #define PEER_STATUS_NSF_WAIT          (1 << 6) /* wait comeback peer */
 426
 427   /* Peer status af flags (reset in bgp_stop) */
 428   u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
 429 #define PEER_STATUS_ORF_PREFIX_SEND   (1 << 0) /* prefix-list send peer */
 430 #define PEER_STATUS_ORF_WAIT_REFRESH  (1 << 1) /* wait refresh received peer */
 431 #define PEER_STATUS_DEFAULT_ORIGINATE (1 << 2) /* default-originate peer */
 432 #define PEER_STATUS_PREFIX_THRESHOLD  (1 << 3) /* exceed prefix-threshold */
 433 #define PEER_STATUS_PREFIX_LIMIT      (1 << 4) /* exceed prefix-limit */
 434 #define PEER_STATUS_EOR_SEND          (1 << 5) /* end-of-rib send to peer */
 435 #define PEER_STATUS_EOR_RECEIVED      (1 << 6) /* end-of-rib received from peer */
 436
 437   /* Default attribute value for the peer. */
 438   u_int32_t config;
 439 #define PEER_CONFIG_WEIGHT            (1 << 0) /* Default weight. */
 440 #define PEER_CONFIG_TIMER             (1 << 1) /* keepalive & holdtime */
 441 #define PEER_CONFIG_CONNECT           (1 << 2) /* connect */
 442 #define PEER_CONFIG_ROUTEADV          (1 << 3) /* route advertise */
 443   u_int32_t weight;
 444   u_int32_t holdtime;
 445   u_int32_t keepalive;
 446   u_int32_t connect;
 447   u_int32_t routeadv;
 448
 449   /* Timer values. */
 450   u_int32_t v_start;
 451   u_int32_t v_connect;
 452   u_int32_t v_holdtime;
 453   u_int32_t v_keepalive;
 454   u_int32_t v_asorig;
 455   u_int32_t v_routeadv;
 456   u_int32_t v_pmax_restart;
 457   u_int32_t v_gr_restart;
 458
 459   /* Threads. */
 460   struct thread *t_read;
 461   struct thread *t_write;
 462   struct thread *t_start;
 463   struct thread *t_connect;
 464   struct thread *t_holdtime;
 465   struct thread *t_keepalive;
 466   struct thread *t_asorig;
 467   struct thread *t_routeadv;
 468   struct thread *t_pmax_restart;
 469   struct thread *t_gr_restart;
 470   struct thread *t_gr_stale;
 471
 472   /* workqueues */
 473   struct work_queue *clear_node_queue;
 474
 475   /* Statistics field */
 476   u_int32_t open_in;            /* Open message input count */
 477   u_int32_t open_out;           /* Open message output count */
 478   u_int32_t update_in;          /* Update message input count */
 479   u_int32_t update_out;         /* Update message ouput count */
 480   time_t update_time;           /* Update message received time. */
 481   u_int32_t keepalive_in;       /* Keepalive input count */
 482   u_int32_t keepalive_out;      /* Keepalive output count */
 483   u_int32_t notify_in;          /* Notify input count */
 484   u_int32_t notify_out;         /* Notify output count */
 485   u_int32_t refresh_in;         /* Route Refresh input count */
 486   u_int32_t refresh_out;        /* Route Refresh output count */
 487   u_int32_t dynamic_cap_in;     /* Dynamic Capability input count.  */
 488   u_int32_t dynamic_cap_out;    /* Dynamic Capability output count.  */
 489
 490   /* BGP state count */
 491   u_int32_t established;        /* Established */
 492   u_int32_t dropped;            /* Dropped */
 493
 494   /* Syncronization list and time.  */
 495   struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
 496   time_t synctime;
 497
 498   /* Send prefix count. */
 499   unsigned long scount[AFI_MAX][SAFI_MAX];
 500
 501   /* Announcement attribute hash.  */
 502   struct hash *hash[AFI_MAX][SAFI_MAX];
 503
 504   /* Notify data. */
 505   struct bgp_notify notify;
 506
 507   /* Whole packet size to be read. */
 508   unsigned long packet_size;
 509
 510   /* Filter structure. */
 511   struct bgp_filter filter[AFI_MAX][SAFI_MAX];
 512
 513   /* ORF Prefix-list */
 514   struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
 515
 516   /* Prefix count. */
 517   unsigned long pcount[AFI_MAX][SAFI_MAX];
 518
 519   /* Max prefix count. */
 520   unsigned long pmax[AFI_MAX][SAFI_MAX];
 521   u_char pmax_threshold[AFI_MAX][SAFI_MAX];
 522   u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
 523 #define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
 524
 525   /* allowas-in. */
 526   char allowas_in[AFI_MAX][SAFI_MAX];
 527
 528   /* peer reset cause */
 529   char last_reset;
 530 #define PEER_DOWN_RID_CHANGE             1 /* bgp router-id command */
 531 #define PEER_DOWN_REMOTE_AS_CHANGE       2 /* neighbor remote-as command */
 532 #define PEER_DOWN_LOCAL_AS_CHANGE        3 /* neighbor local-as command */
 533 #define PEER_DOWN_CLID_CHANGE            4 /* bgp cluster-id command */
 534 #define PEER_DOWN_CONFED_ID_CHANGE       5 /* bgp confederation identifier command */
 535 #define PEER_DOWN_CONFED_PEER_CHANGE     6 /* bgp confederation peer command */
 536 #define PEER_DOWN_RR_CLIENT_CHANGE       7 /* neighbor route-reflector-client command */
 537 #define PEER_DOWN_RS_CLIENT_CHANGE       8 /* neighbor route-server-client command */
 538 #define PEER_DOWN_UPDATE_SOURCE_CHANGE   9 /* neighbor update-source command */
 539 #define PEER_DOWN_AF_ACTIVATE           10 /* neighbor activate command */
 540 #define PEER_DOWN_USER_SHUTDOWN         11 /* neighbor shutdown command */
 541 #define PEER_DOWN_USER_RESET            12 /* clear ip bgp command */
 542 #define PEER_DOWN_NOTIFY_RECEIVED       13 /* notification received */
 543 #define PEER_DOWN_NOTIFY_SEND           14 /* notification send */
 544 #define PEER_DOWN_CLOSE_SESSION         15 /* tcp session close */
 545 #define PEER_DOWN_NEIGHBOR_DELETE       16 /* neghbor delete */
 546 #define PEER_DOWN_RMAP_BIND             17 /* neghbor peer-group command */
 547 #define PEER_DOWN_RMAP_UNBIND           18 /* no neighbor peer-group command */
 548 #define PEER_DOWN_CAPABILITY_CHANGE     19 /* neighbor capability command */
 549 #define PEER_DOWN_PASSIVE_CHANGE        20 /* neighbor passive command */
 550 #define PEER_DOWN_MULTIHOP_CHANGE       21 /* neighbor multihop command */
 551 #define PEER_DOWN_NSF_CLOSE_SESSION     22 /* NSF tcp session close */
 552
 553   /* The kind of route-map Flags.*/
 554   u_char rmap_type;
 555 #define PEER_RMAP_TYPE_IN             (1 << 0) /* neighbor route-map in */
 556 #define PEER_RMAP_TYPE_OUT            (1 << 1) /* neighbor route-map out */
 557 #define PEER_RMAP_TYPE_NETWORK        (1 << 2) /* network route-map */
 558 #define PEER_RMAP_TYPE_REDISTRIBUTE   (1 << 3) /* redistribute route-map */
 559 #define PEER_RMAP_TYPE_DEFAULT        (1 << 4) /* default-originate route-map */
 560 #define PEER_RMAP_TYPE_NOSET          (1 << 5) /* not allow to set commands */
 561 #define PEER_RMAP_TYPE_IMPORT         (1 << 6) /* neighbor route-map import */
 562 #define PEER_RMAP_TYPE_EXPORT         (1 << 7) /* neighbor route-map export */
 563 };
 564
 565 #define PEER_PASSWORD_MINLEN    (1)
 566 #define PEER_PASSWORD_MAXLEN    (80)
 567
 568 /* This structure's member directly points incoming packet data
 569    stream. */
 570 struct bgp_nlri
 571 {
 572   /* AFI.  */
 573   afi_t afi;
 574
 575   /* SAFI.  */
 576   safi_t safi;
 577
 578   /* Pointer to NLRI byte stream.  */
 579   u_char *nlri;
 580
 581   /* Length of whole NLRI.  */
 582   bgp_size_t length;
 583 };
 584
 585 /* BGP versions.  */
 586 #define BGP_VERSION_4                            4
 587
 588 /* Default BGP port number.  */
 589 #define BGP_PORT_DEFAULT                       179
 590
 591 /* BGP message header and packet size.  */
 592 #define BGP_MARKER_SIZE                         16
 593 #define BGP_HEADER_SIZE                         19
 594 #define BGP_MAX_PACKET_SIZE                   4096
 595
 596 /* BGP minimum message size.  */
 597 #define BGP_MSG_OPEN_MIN_SIZE                   (BGP_HEADER_SIZE + 10)
 598 #define BGP_MSG_UPDATE_MIN_SIZE                 (BGP_HEADER_SIZE + 4)
 599 #define BGP_MSG_NOTIFY_MIN_SIZE                 (BGP_HEADER_SIZE + 2)
 600 #define BGP_MSG_KEEPALIVE_MIN_SIZE              (BGP_HEADER_SIZE + 0)
 601 #define BGP_MSG_ROUTE_REFRESH_MIN_SIZE          (BGP_HEADER_SIZE + 4)
 602 #define BGP_MSG_CAPABILITY_MIN_SIZE             (BGP_HEADER_SIZE + 3)
 603
 604 /* BGP message types.  */
 605 #define BGP_MSG_OPEN                             1
 606 #define BGP_MSG_UPDATE                           2
 607 #define BGP_MSG_NOTIFY                           3
 608 #define BGP_MSG_KEEPALIVE                        4
 609 #define BGP_MSG_ROUTE_REFRESH_NEW                5
 610 #define BGP_MSG_CAPABILITY                       6
 611 #define BGP_MSG_ROUTE_REFRESH_OLD              128
 612
 613 /* BGP open optional parameter.  */
 614 #define BGP_OPEN_OPT_AUTH                        1
 615 #define BGP_OPEN_OPT_CAP                         2
 616
 617 /* BGP4 attribute type codes.  */
 618 #define BGP_ATTR_ORIGIN                          1
 619 #define BGP_ATTR_AS_PATH                         2
 620 #define BGP_ATTR_NEXT_HOP                        3
 621 #define BGP_ATTR_MULTI_EXIT_DISC                 4
 622 #define BGP_ATTR_LOCAL_PREF                      5
 623 #define BGP_ATTR_ATOMIC_AGGREGATE                6
 624 #define BGP_ATTR_AGGREGATOR                      7
 625 #define BGP_ATTR_COMMUNITIES                     8
 626 #define BGP_ATTR_ORIGINATOR_ID                   9
 627 #define BGP_ATTR_CLUSTER_LIST                   10
 628 #define BGP_ATTR_DPA                            11
 629 #define BGP_ATTR_ADVERTISER                     12
 630 #define BGP_ATTR_RCID_PATH                      13
 631 #define BGP_ATTR_MP_REACH_NLRI                  14
 632 #define BGP_ATTR_MP_UNREACH_NLRI                15
 633 #define BGP_ATTR_EXT_COMMUNITIES                16
 634 #define BGP_ATTR_AS4_PATH                       17
 635 #define BGP_ATTR_AS4_AGGREGATOR                 18
 636 #define BGP_ATTR_AS_PATHLIMIT                   21
 637
 638 /* BGP update origin.  */
 639 #define BGP_ORIGIN_IGP                           0
 640 #define BGP_ORIGIN_EGP                           1
 641 #define BGP_ORIGIN_INCOMPLETE                    2
 642
 643 /* BGP notify message codes.  */
 644 #define BGP_NOTIFY_HEADER_ERR                    1
 645 #define BGP_NOTIFY_OPEN_ERR                      2
 646 #define BGP_NOTIFY_UPDATE_ERR                    3
 647 #define BGP_NOTIFY_HOLD_ERR                      4
 648 #define BGP_NOTIFY_FSM_ERR                       5
 649 #define BGP_NOTIFY_CEASE                         6
 650 #define BGP_NOTIFY_CAPABILITY_ERR                7
 651 #define BGP_NOTIFY_MAX                           8
 652
 653 #define BGP_NOTIFY_SUBCODE_UNSPECIFIC            0
 654
 655 /* BGP_NOTIFY_HEADER_ERR sub codes.  */
 656 #define BGP_NOTIFY_HEADER_NOT_SYNC               1
 657 #define BGP_NOTIFY_HEADER_BAD_MESLEN             2
 658 #define BGP_NOTIFY_HEADER_BAD_MESTYPE            3
 659 #define BGP_NOTIFY_HEADER_MAX                    4
 660
 661 /* BGP_NOTIFY_OPEN_ERR sub codes.  */
 662 #define BGP_NOTIFY_OPEN_UNSUP_VERSION            1
 663 #define BGP_NOTIFY_OPEN_BAD_PEER_AS              2
 664 #define BGP_NOTIFY_OPEN_BAD_BGP_IDENT            3
 665 #define BGP_NOTIFY_OPEN_UNSUP_PARAM              4
 666 #define BGP_NOTIFY_OPEN_AUTH_FAILURE             5
 667 #define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME          6
 668 #define BGP_NOTIFY_OPEN_UNSUP_CAPBL              7
 669 #define BGP_NOTIFY_OPEN_MAX                      8
 670
 671 /* BGP_NOTIFY_UPDATE_ERR sub codes.  */
 672 #define BGP_NOTIFY_UPDATE_MAL_ATTR               1
 673 #define BGP_NOTIFY_UPDATE_UNREC_ATTR             2
 674 #define BGP_NOTIFY_UPDATE_MISS_ATTR              3
 675 #define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR          4
 676 #define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR          5
 677 #define BGP_NOTIFY_UPDATE_INVAL_ORIGIN           6
 678 #define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP          7
 679 #define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP         8
 680 #define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR           9
 681 #define BGP_NOTIFY_UPDATE_INVAL_NETWORK         10
 682 #define BGP_NOTIFY_UPDATE_MAL_AS_PATH           11
 683 #define BGP_NOTIFY_UPDATE_MAX                   12
 684
 685 /* BGP_NOTIFY_CEASE sub codes (RFC 4486).  */
 686 #define BGP_NOTIFY_CEASE_MAX_PREFIX              1
 687 #define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN          2
 688 #define BGP_NOTIFY_CEASE_PEER_UNCONFIG           3
 689 #define BGP_NOTIFY_CEASE_ADMIN_RESET             4
 690 #define BGP_NOTIFY_CEASE_CONNECT_REJECT          5
 691 #define BGP_NOTIFY_CEASE_CONFIG_CHANGE           6
 692 #define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION    7
 693 #define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE         8
 694 #define BGP_NOTIFY_CEASE_MAX                     9
 695
 696 /* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
 697 #define BGP_NOTIFY_CAPABILITY_INVALID_ACTION     1
 698 #define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH     2
 699 #define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE     3
 700 #define BGP_NOTIFY_CAPABILITY_MAX                4
 701
 702 /* BGP finite state machine status.  */
 703 #define Idle                                     1
 704 #define Connect                                  2
 705 #define Active                                   3
 706 #define OpenSent                                 4
 707 #define OpenConfirm                              5
 708 #define Established                              6
 709 #define Clearing                                 7
 710 #define Deleted                                  8
 711 #define BGP_STATUS_MAX                           9
 712
 713 /* BGP finite state machine events.  */
 714 #define BGP_Start                                1
 715 #define BGP_Stop                                 2
 716 #define TCP_connection_open                      3
 717 #define TCP_connection_closed                    4
 718 #define TCP_connection_open_failed               5
 719 #define TCP_fatal_error                          6
 720 #define ConnectRetry_timer_expired               7
 721 #define Hold_Timer_expired                       8
 722 #define KeepAlive_timer_expired                  9
 723 #define Receive_OPEN_message                    10
 724 #define Receive_KEEPALIVE_message               11
 725 #define Receive_UPDATE_message                  12
 726 #define Receive_NOTIFICATION_message            13
 727 #define Clearing_Completed                      14
 728 #define BGP_EVENTS_MAX                          15
 729
 730 /* BGP timers default value.  */
 731 #define BGP_INIT_START_TIMER                     5
 732 #define BGP_ERROR_START_TIMER                   30
 733 #define BGP_DEFAULT_HOLDTIME                   180
 734 #define BGP_DEFAULT_KEEPALIVE                   60
 735 #define BGP_DEFAULT_ASORIGINATE                 15
 736 #define BGP_DEFAULT_EBGP_ROUTEADV               30
 737 #define BGP_DEFAULT_IBGP_ROUTEADV                5
 738 #define BGP_CLEAR_CONNECT_RETRY                 20
 739 #define BGP_DEFAULT_CONNECT_RETRY              120
 740
 741 /* BGP default local preference.  */
 742 #define BGP_DEFAULT_LOCAL_PREF                 100
 743
 744 /* BGP graceful restart  */
 745 #define BGP_DEFAULT_RESTART_TIME               120
 746 #define BGP_DEFAULT_STALEPATH_TIME             360
 747
 748 /* RFC4364 */
 749 #define SAFI_MPLS_LABELED_VPN                  128
 750
 751 /* Max TTL value.  */
 752 #define TTL_MAX                                255
 753
 754 /* BGP uptime string length.  */
 755 #define BGP_UPTIME_LEN 25
 756
 757 /* Default configuration settings for bgpd.  */
 758 #define BGP_VTY_PORT                          2605
 759 #define BGP_DEFAULT_CONFIG             "bgpd.conf"
 760
 761 /* Check AS path loop when we send NLRI.  */
 762 /* #define BGP_SEND_ASPATH_CHECK */
 763
 764 /* Flag for peer_clear_soft().  */
 765 enum bgp_clear_type
 766 {
 767   BGP_CLEAR_SOFT_NONE,
 768   BGP_CLEAR_SOFT_OUT,
 769   BGP_CLEAR_SOFT_IN,
 770   BGP_CLEAR_SOFT_BOTH,
 771   BGP_CLEAR_SOFT_IN_ORF_PREFIX,
 772   BGP_CLEAR_SOFT_RSCLIENT
 773 };
 774
 775 /* Macros. */
 776 #define BGP_INPUT(P)         ((P)->ibuf)
 777 #define BGP_INPUT_PNT(P)     (STREAM_PNT(BGP_INPUT(P)))
 778
 779 /* Count prefix size from mask length */
 780 #define PSIZE(a) (((a) + 7) / (8))
 781
 782 /* BGP error codes.  */
 783 #define BGP_SUCCESS                               0
 784 #define BGP_ERR_INVALID_VALUE                    -1
 785 #define BGP_ERR_INVALID_FLAG                     -2
 786 #define BGP_ERR_INVALID_AS                       -3
 787 #define BGP_ERR_INVALID_BGP                      -4
 788 #define BGP_ERR_PEER_GROUP_MEMBER                -5
 789 #define BGP_ERR_MULTIPLE_INSTANCE_USED           -6
 790 #define BGP_ERR_PEER_GROUP_MEMBER_EXISTS         -7
 791 #define BGP_ERR_PEER_BELONGS_TO_GROUP            -8
 792 #define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED       -9
 793 #define BGP_ERR_PEER_GROUP_NO_REMOTE_AS         -10
 794 #define BGP_ERR_PEER_GROUP_CANT_CHANGE          -11
 795 #define BGP_ERR_PEER_GROUP_MISMATCH             -12
 796 #define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT  -13
 797 #define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET       -14
 798 #define BGP_ERR_AS_MISMATCH                     -15
 799 #define BGP_ERR_PEER_INACTIVE                   -16
 800 #define BGP_ERR_INVALID_FOR_PEER_GROUP_MEMBER   -17
 801 #define BGP_ERR_PEER_GROUP_HAS_THE_FLAG         -18
 802 #define BGP_ERR_PEER_FLAG_CONFLICT              -19
 803 #define BGP_ERR_PEER_GROUP_SHUTDOWN             -20
 804 #define BGP_ERR_PEER_FILTER_CONFLICT            -21
 805 #define BGP_ERR_NOT_INTERNAL_PEER               -22
 806 #define BGP_ERR_REMOVE_PRIVATE_AS               -23
 807 #define BGP_ERR_AF_UNCONFIGURED                 -24
 808 #define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED      -25
 809 #define BGP_ERR_INSTANCE_MISMATCH               -26
 810 #define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP  -27
 811 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS    -28
 812 #define BGP_ERR_TCPSIG_FAILED                   -29
 813 #define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK   -30
 814 #define BGP_ERR_NO_IBGP_WITH_TTLHACK            -31
 815 #define BGP_ERR_MAX                             -32
 816
 817 extern struct bgp_master *bm;
 818
 819 extern struct thread_master *master;
 820
 821 /* Prototypes. */
 822 extern void bgp_terminate (void);
 823 extern void bgp_reset (void);
 824 extern time_t bgp_clock (void);
 825 extern void bgp_zclient_reset (void);
 826 extern int bgp_nexthop_set (union sockunion *, union sockunion *,
 827                      struct bgp_nexthop *, struct peer *);
 828 extern struct bgp *bgp_get_default (void);
 829 extern struct bgp *bgp_lookup (as_t, const char *);
 830 extern struct bgp *bgp_lookup_by_name (const char *);
 831 extern struct peer *peer_lookup (struct bgp *, union sockunion *);
 832 extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
 833 extern struct peer_group *peer_group_get (struct bgp *, const char *);
 834 extern struct peer *peer_lookup_with_open (union sockunion *, as_t, struct in_addr *,
 835                                     int *);
 836 extern struct peer *peer_lock (struct peer *);
 837 extern struct peer *peer_unlock (struct peer *);
 838 extern bgp_peer_sort_t peer_sort (struct peer *peer);
 839 extern int peer_active (struct peer *);
 840 extern int peer_active_nego (struct peer *);
 841 extern struct peer *peer_create_accept (struct bgp *);
 842 extern char *peer_uptime (time_t, char *, size_t);
 843 extern int bgp_config_write (struct vty *);
 844 extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
 845 \f
 846 extern void bgp_master_init (void);
 847
 848 extern void bgp_init (void);
 849 extern int bgp_socket_init (void);
 850 extern void bgp_route_map_init (void);
 851
 852 extern int bgp_option_set (int);
 853 extern int bgp_option_unset (int);
 854 extern int bgp_option_check (int);
 855
 856 extern int bgp_get (struct bgp **, as_t *, const char *);
 857 extern int bgp_delete (struct bgp *);
 858
 859 extern int bgp_flag_set (struct bgp *, int);
 860 extern int bgp_flag_unset (struct bgp *, int);
 861 extern int bgp_flag_check (struct bgp *, int);
 862
 863 extern void bgp_lock (struct bgp *);
 864 extern void bgp_unlock (struct bgp *);
 865
 866 extern int bgp_router_id_set (struct bgp *, struct in_addr *);
 867
 868 extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
 869 extern int bgp_cluster_id_unset (struct bgp *);
 870
 871 extern int bgp_confederation_id_set (struct bgp *, as_t);
 872 extern int bgp_confederation_id_unset (struct bgp *);
 873 extern int bgp_confederation_peers_check (struct bgp *, as_t);
 874
 875 extern int bgp_confederation_peers_add (struct bgp *, as_t);
 876 extern int bgp_confederation_peers_remove (struct bgp *, as_t);
 877
 878 extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
 879 extern int bgp_timers_unset (struct bgp *);
 880
 881 extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
 882 extern int bgp_default_local_preference_unset (struct bgp *);
 883
 884 extern int peer_rsclient_active (struct peer *);
 885
 886 extern int peer_remote_as (struct bgp *, union sockunion *, as_t *, afi_t, safi_t);
 887 extern int peer_group_remote_as (struct bgp *, const char *, as_t *);
 888 extern int peer_delete (struct peer *peer);
 889 extern int peer_group_delete (struct peer_group *);
 890 extern int peer_group_remote_as_delete (struct peer_group *);
 891
 892 extern int peer_activate (struct peer *, afi_t, safi_t);
 893 extern int peer_deactivate (struct peer *, afi_t, safi_t);
 894
 895 extern int peer_group_bind (struct bgp *, union sockunion *, struct peer_group *,
 896                      afi_t, safi_t, as_t *);
 897 extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
 898                        afi_t, safi_t);
 899
 900 extern int peer_flag_set (struct peer *, u_int32_t);
 901 extern int peer_flag_unset (struct peer *, u_int32_t);
 902
 903 extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
 904 extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
 905 extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
 906
 907 extern int peer_ebgp_multihop_set (struct peer *, int);
 908 extern int peer_ebgp_multihop_unset (struct peer *);
 909
 910 extern int peer_description_set (struct peer *, char *);
 911 extern int peer_description_unset (struct peer *);
 912
 913 extern int peer_update_source_if_set (struct peer *, const char *);
 914 extern int peer_update_source_addr_set (struct peer *, union sockunion *);
 915 extern int peer_update_source_unset (struct peer *);
 916
 917 extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
 918 extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
 919
 920 extern int peer_port_set (struct peer *, u_int16_t);
 921 extern int peer_port_unset (struct peer *);
 922
 923 extern int peer_weight_set (struct peer *, u_int16_t);
 924 extern int peer_weight_unset (struct peer *);
 925
 926 extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
 927 extern int peer_timers_unset (struct peer *);
 928
 929 extern int peer_timers_connect_set (struct peer *, u_int32_t);
 930 extern int peer_timers_connect_unset (struct peer *);
 931
 932 extern int peer_advertise_interval_set (struct peer *, u_int32_t);
 933 extern int peer_advertise_interval_unset (struct peer *);
 934
 935 extern int peer_interface_set (struct peer *, const char *);
 936 extern int peer_interface_unset (struct peer *);
 937
 938 extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
 939 extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
 940
 941 extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
 942 extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
 943
 944 extern int peer_local_as_set (struct peer *, as_t, int);
 945 extern int peer_local_as_unset (struct peer *);
 946
 947 extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
 948 extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
 949
 950 extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
 951 extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
 952
 953 extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
 954 extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
 955
 956 extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
 957
 958 extern int peer_password_set (struct peer *, const char *);
 959 extern int peer_password_unset (struct peer *);
 960
 961 extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
 962
 963 extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
 964 extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
 965
 966 extern int peer_clear (struct peer *);
 967 extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
 968
 969 extern int peer_ttl_security_hops_set (struct peer *, int);
 970 extern int peer_ttl_security_hops_unset (struct peer *);
 971
 972 #endif /* _QUAGGA_BGPD_H */