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