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 along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef _QUAGGA_BGPD_H
  22 #define _QUAGGA_BGPD_H
  23
  24 #include "qobj.h"
  25 #include "lib/json.h"
  26 #include "vrf.h"
  27 #include "vty.h"
  28
  29 /* For union sockunion.  */
  30 #include "queue.h"
  31 #include "sockunion.h"
  32 #include "routemap.h"
  33 #include "linklist.h"
  34 #include "defaults.h"
  35 #include "bgp_memory.h"
  36 #include "bitfield.h"
  37
  38 #define BGP_MAX_HOSTNAME 64     /* Linux max, is larger than most other sys */
  39 #define BGP_PEER_MAX_HASH_SIZE 16384
  40
  41 /* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
  42 #define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
  43
  44 struct update_subgroup;
  45 struct bpacket;
  46
  47 /*
  48  * Allow the neighbor XXXX remote-as to take internal or external
  49  * AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
  50  * behavior
  51  * in the system.
  52  */
  53 enum { AS_UNSPECIFIED = 0,
  54        AS_SPECIFIED,
  55        AS_INTERNAL,
  56        AS_EXTERNAL,
  57 };
  58
  59 /* Typedef BGP specific types.  */
  60 typedef u_int32_t as_t;
  61 typedef u_int16_t as16_t; /* we may still encounter 16 Bit asnums */
  62 typedef u_int16_t bgp_size_t;
  63
  64 #define max(a, b)                                                              \
  65         ({                                                                     \
  66                 __typeof__(a) _a = (a);                                        \
  67                 __typeof__(b) _b = (b);                                        \
  68                 _a > _b ? _a : _b;                                             \
  69         })
  70
  71 enum bgp_af_index {
  72         BGP_AF_START,
  73         BGP_AF_IPV4_UNICAST = BGP_AF_START,
  74         BGP_AF_IPV4_MULTICAST,
  75         BGP_AF_IPV4_VPN,
  76         BGP_AF_IPV6_UNICAST,
  77         BGP_AF_IPV6_MULTICAST,
  78         BGP_AF_IPV6_VPN,
  79         BGP_AF_IPV4_ENCAP,
  80         BGP_AF_IPV6_ENCAP,
  81         BGP_AF_L2VPN_EVPN,
  82         BGP_AF_IPV4_LBL_UNICAST,
  83         BGP_AF_IPV6_LBL_UNICAST,
  84         BGP_AF_MAX
  85 };
  86
  87 #define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
  88
  89 #define FOREACH_AFI_SAFI(afi, safi)                                            \
  90         for (afi = AFI_IP; afi < AFI_MAX; afi++)                               \
  91                 for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
  92
  93 /* BGP master for system wide configurations and variables.  */
  94 struct bgp_master {
  95         /* BGP instance list.  */
  96         struct list *bgp;
  97
  98         /* BGP thread master.  */
  99         struct thread_master *master;
 100
 101         /* work queues */
 102         struct work_queue *process_main_queue;
 103
 104         /* Listening sockets */
 105         struct list *listen_sockets;
 106
 107         /* BGP port number.  */
 108         u_int16_t port;
 109
 110         /* Listener address */
 111         char *address;
 112
 113         /* BGP start time.  */
 114         time_t start_time;
 115
 116         /* Various BGP global configuration.  */
 117         u_char options;
 118 #define BGP_OPT_NO_FIB                   (1 << 0)
 119 #define BGP_OPT_MULTIPLE_INSTANCE        (1 << 1)
 120 #define BGP_OPT_CONFIG_CISCO             (1 << 2)
 121 #define BGP_OPT_NO_LISTEN                (1 << 3)
 122
 123         uint64_t updgrp_idspace;
 124         uint64_t subgrp_idspace;
 125
 126         /* timer to dampen route map changes */
 127         struct thread *t_rmap_update; /* Handle route map updates */
 128         u_int32_t rmap_update_timer;  /* Route map update timer */
 129                                       /* $FRR indent$ */
 130                                       /* clang-format off */
 131 #define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
 132
 133         QOBJ_FIELDS
 134 };
 135 DECLARE_QOBJ_TYPE(bgp_master)
 136
 137 /* BGP route-map structure.  */
 138 struct bgp_rmap {
 139         char *name;
 140         struct route_map *map;
 141 };
 142
 143 struct bgp_redist {
 144         u_short instance;
 145
 146         /* BGP redistribute metric configuration. */
 147         u_char redist_metric_flag;
 148         u_int32_t redist_metric;
 149
 150         /* BGP redistribute route-map.  */
 151         struct bgp_rmap rmap;
 152 };
 153
 154 /*
 155  * Type of 'struct bgp'.
 156  * - Default: The default instance
 157  * - VRF: A specific (non-default) VRF
 158  * - View: An instance used for route exchange
 159  * The "default" instance is treated separately to simplify the code. Note
 160  * that if deployed in a Multi-VRF environment, it may not exist.
 161  */
 162 enum bgp_instance_type {
 163         BGP_INSTANCE_TYPE_DEFAULT,
 164         BGP_INSTANCE_TYPE_VRF,
 165         BGP_INSTANCE_TYPE_VIEW
 166 };
 167
 168 /* BGP instance structure.  */
 169 struct bgp {
 170         /* AS number of this BGP instance.  */
 171         as_t as;
 172
 173         /* Name of this BGP instance.  */
 174         char *name;
 175
 176         /* Type of instance and VRF id. */
 177         enum bgp_instance_type inst_type;
 178         vrf_id_t vrf_id;
 179
 180         /* Reference count to allow peer_delete to finish after bgp_delete */
 181         int lock;
 182
 183         /* Self peer.  */
 184         struct peer *peer_self;
 185
 186         /* BGP peer. */
 187         struct list *peer;
 188         struct hash *peerhash;
 189
 190         /* BGP peer group.  */
 191         struct list *group;
 192
 193         /* The maximum number of BGP dynamic neighbors that can be created */
 194         int dynamic_neighbors_limit;
 195
 196         /* The current number of BGP dynamic neighbors */
 197         int dynamic_neighbors_count;
 198
 199         struct hash *update_groups[BGP_AF_MAX];
 200
 201         /*
 202          * Global statistics for update groups.
 203          */
 204         struct {
 205                 u_int32_t join_events;
 206                 u_int32_t prune_events;
 207                 u_int32_t merge_events;
 208                 u_int32_t split_events;
 209                 u_int32_t updgrp_switch_events;
 210                 u_int32_t peer_refreshes_combined;
 211                 u_int32_t adj_count;
 212                 u_int32_t merge_checks_triggered;
 213
 214                 u_int32_t updgrps_created;
 215                 u_int32_t updgrps_deleted;
 216                 u_int32_t subgrps_created;
 217                 u_int32_t subgrps_deleted;
 218         } update_group_stats;
 219
 220         /* BGP configuration.  */
 221         u_int16_t config;
 222 #define BGP_CONFIG_CLUSTER_ID             (1 << 0)
 223 #define BGP_CONFIG_CONFEDERATION          (1 << 1)
 224
 225         /* BGP router identifier.  */
 226         struct in_addr router_id;
 227         struct in_addr router_id_static;
 228         struct in_addr router_id_zebra;
 229
 230         /* BGP route reflector cluster ID.  */
 231         struct in_addr cluster_id;
 232
 233         /* BGP confederation information.  */
 234         as_t confed_id;
 235         as_t *confed_peers;
 236         int confed_peers_cnt;
 237
 238         struct thread
 239                 *t_startup; /* start-up timer on only once at the beginning */
 240
 241         u_int32_t v_maxmed_onstartup;     /* Duration of max-med on start-up */
 242                                           /* $FRR indent$ */
 243                                           /* clang-format off */
 244 #define BGP_MAXMED_ONSTARTUP_UNCONFIGURED  0 /* 0 means off, its the default */
 245         u_int32_t maxmed_onstartup_value; /* Max-med value when active on
 246                                              start-up */
 247         struct thread
 248                 *t_maxmed_onstartup; /* non-null when max-med onstartup is on */
 249         u_char maxmed_onstartup_over; /* Flag to make it effective only once */
 250
 251         u_char v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
 252                                /* $FRR indent$ */
 253                                /* clang-format off */
 254 #define BGP_MAXMED_ADMIN_UNCONFIGURED  0 /* Off by default */
 255         u_int32_t
 256                 maxmed_admin_value; /* Max-med value when administrative in on
 257                                        */
 258 #define BGP_MAXMED_VALUE_DEFAULT  4294967294 /* Maximum by default */
 259
 260         u_char maxmed_active;   /* 1/0 if max-med is active or not */
 261         u_int32_t maxmed_value; /* Max-med value when its active */
 262
 263         /* BGP update delay on startup */
 264         struct thread *t_update_delay;
 265         struct thread *t_establish_wait;
 266         u_char update_delay_over;
 267         u_char main_zebra_update_hold;
 268         u_char main_peers_update_hold;
 269         u_int16_t v_update_delay;
 270         u_int16_t v_establish_wait;
 271         char update_delay_begin_time[64];
 272         char update_delay_end_time[64];
 273         char update_delay_zebra_resume_time[64];
 274         char update_delay_peers_resume_time[64];
 275         u_int32_t established;
 276         u_int32_t restarted_peers;
 277         u_int32_t implicit_eors;
 278         u_int32_t explicit_eors;
 279 #define BGP_UPDATE_DELAY_DEF              0
 280 #define BGP_UPDATE_DELAY_MIN              0
 281 #define BGP_UPDATE_DELAY_MAX              3600
 282
 283         /* BGP flags. */
 284         u_int32_t flags;
 285 #define BGP_FLAG_ALWAYS_COMPARE_MED       (1 << 0)
 286 #define BGP_FLAG_DETERMINISTIC_MED        (1 << 1)
 287 #define BGP_FLAG_MED_MISSING_AS_WORST     (1 << 2)
 288 #define BGP_FLAG_MED_CONFED               (1 << 3)
 289 #define BGP_FLAG_NO_DEFAULT_IPV4          (1 << 4)
 290 #define BGP_FLAG_NO_CLIENT_TO_CLIENT      (1 << 5)
 291 #define BGP_FLAG_ENFORCE_FIRST_AS         (1 << 6)
 292 #define BGP_FLAG_COMPARE_ROUTER_ID        (1 << 7)
 293 #define BGP_FLAG_ASPATH_IGNORE            (1 << 8)
 294 #define BGP_FLAG_IMPORT_CHECK             (1 << 9)
 295 #define BGP_FLAG_NO_FAST_EXT_FAILOVER     (1 << 10)
 296 #define BGP_FLAG_LOG_NEIGHBOR_CHANGES     (1 << 11)
 297 #define BGP_FLAG_GRACEFUL_RESTART         (1 << 12)
 298 #define BGP_FLAG_ASPATH_CONFED            (1 << 13)
 299 #define BGP_FLAG_ASPATH_MULTIPATH_RELAX   (1 << 14)
 300 #define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
 301 #define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
 302 #define BGP_FLAG_MULTIPATH_RELAX_AS_SET   (1 << 17)
 303 #define BGP_FLAG_FORCE_STATIC_PROCESS     (1 << 18)
 304 #define BGP_FLAG_SHOW_HOSTNAME            (1 << 19)
 305 #define BGP_FLAG_GR_PRESERVE_FWD          (1 << 20)
 306
 307         /* BGP Per AF flags */
 308         u_int16_t af_flags[AFI_MAX][SAFI_MAX];
 309 #define BGP_CONFIG_DAMPENING              (1 << 0)
 310
 311         /* Route table for next-hop lookup cache. */
 312         struct bgp_table *nexthop_cache_table[AFI_MAX];
 313
 314         /* Route table for import-check */
 315         struct bgp_table *import_check_table[AFI_MAX];
 316
 317         struct bgp_table *connected_table[AFI_MAX];
 318
 319         struct hash *address_hash;
 320
 321         /* Static route configuration.  */
 322         struct bgp_table *route[AFI_MAX][SAFI_MAX];
 323
 324         /* Aggregate address configuration.  */
 325         struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
 326
 327         /* BGP routing information base.  */
 328         struct bgp_table *rib[AFI_MAX][SAFI_MAX];
 329
 330         /* BGP table route-map.  */
 331         struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
 332
 333         /* BGP redistribute configuration. */
 334         struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
 335
 336         /* timer to re-evaluate neighbor default-originate route-maps */
 337         struct thread *t_rmap_def_originate_eval;
 338 #define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
 339
 340         /* BGP distance configuration.  */
 341         u_char distance_ebgp[AFI_MAX][SAFI_MAX];
 342         u_char distance_ibgp[AFI_MAX][SAFI_MAX];
 343         u_char distance_local[AFI_MAX][SAFI_MAX];
 344
 345         /* BGP default local-preference.  */
 346         u_int32_t default_local_pref;
 347
 348         /* BGP default subgroup pkt queue max  */
 349         u_int32_t default_subgroup_pkt_queue_max;
 350
 351         /* BGP default timer.  */
 352         u_int32_t default_holdtime;
 353         u_int32_t default_keepalive;
 354
 355         /* BGP graceful restart */
 356         u_int32_t restart_time;
 357         u_int32_t stalepath_time;
 358
 359         /* Maximum-paths configuration */
 360         struct bgp_maxpaths_cfg {
 361                 u_int16_t maxpaths_ebgp;
 362                 u_int16_t maxpaths_ibgp;
 363                 u_int16_t ibgp_flags;
 364 #define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
 365         } maxpaths[AFI_MAX][SAFI_MAX];
 366
 367         u_int32_t wpkt_quanta; /* per peer packet quanta to write */
 368         u_int32_t coalesce_time;
 369
 370         u_int32_t addpath_tx_id;
 371         int addpath_tx_used[AFI_MAX][SAFI_MAX];
 372
 373 #if ENABLE_BGP_VNC
 374         struct rfapi_cfg *rfapi_cfg;
 375         struct rfapi *rfapi;
 376 #endif
 377
 378         /* EVPN related information */
 379
 380         /* EVI hash table */
 381         struct hash *vnihash;
 382
 383         /* EVPN enable - advertise local VNIs and their MACs etc. */
 384         int advertise_all_vni;
 385
 386         /* Hash table of Import RTs to EVIs */
 387         struct hash *import_rt_hash;
 388
 389         /* Id space for automatic RD derivation for an EVI */
 390         bitfield_t rd_idspace;
 391
 392         QOBJ_FIELDS
 393 };
 394 DECLARE_QOBJ_TYPE(bgp)
 395
 396 #define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
 397
 398 #define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)                                        \
 399         (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT                           \
 400          || (bgp->inst_type == BGP_INSTANCE_TYPE_VRF                           \
 401              && bgp->vrf_id != VRF_UNKNOWN))
 402
 403 /* BGP peer-group support. */
 404 struct peer_group {
 405         /* Name of the peer-group. */
 406         char *name;
 407
 408         /* Pointer to BGP.  */
 409         struct bgp *bgp;
 410
 411         /* Peer-group client list. */
 412         struct list *peer;
 413
 414         /** Dynamic neighbor listening ranges */
 415         struct list *listen_range[AFI_MAX];
 416
 417         /* Peer-group config */
 418         struct peer *conf;
 419 };
 420
 421 /* BGP Notify message format. */
 422 struct bgp_notify {
 423         u_char code;
 424         u_char subcode;
 425         char *data;
 426         bgp_size_t length;
 427         u_char *raw_data;
 428 };
 429
 430 /* Next hop self address. */
 431 struct bgp_nexthop {
 432         struct interface *ifp;
 433         struct in_addr v4;
 434         struct in6_addr v6_global;
 435         struct in6_addr v6_local;
 436 };
 437
 438 /* BGP addpath values */
 439 #define BGP_ADDPATH_RX     1
 440 #define BGP_ADDPATH_TX     2
 441 #define BGP_ADDPATH_ID_LEN 4
 442
 443 #define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
 444
 445 /* BGP router distinguisher value.  */
 446 #define BGP_RD_SIZE                8
 447
 448 struct bgp_rd {
 449         u_char val[BGP_RD_SIZE];
 450 };
 451
 452 #define RMAP_IN  0
 453 #define RMAP_OUT 1
 454 #define RMAP_MAX 2
 455
 456 #include "filter.h"
 457
 458 /* BGP filter structure. */
 459 struct bgp_filter {
 460         /* Distribute-list.  */
 461         struct {
 462                 char *name;
 463                 struct access_list *alist;
 464         } dlist[FILTER_MAX];
 465
 466         /* Prefix-list.  */
 467         struct {
 468                 char *name;
 469                 struct prefix_list *plist;
 470         } plist[FILTER_MAX];
 471
 472         /* Filter-list.  */
 473         struct {
 474                 char *name;
 475                 struct as_list *aslist;
 476         } aslist[FILTER_MAX];
 477
 478         /* Route-map.  */
 479         struct {
 480                 char *name;
 481                 struct route_map *map;
 482         } map[RMAP_MAX];
 483
 484         /* Unsuppress-map.  */
 485         struct {
 486                 char *name;
 487                 struct route_map *map;
 488         } usmap;
 489 };
 490
 491 /* IBGP/EBGP identifier.  We also have a CONFED peer, which is to say,
 492    a peer who's AS is part of our Confederation.  */
 493 typedef enum {
 494         BGP_PEER_IBGP = 1,
 495         BGP_PEER_EBGP,
 496         BGP_PEER_INTERNAL,
 497         BGP_PEER_CONFED,
 498 } bgp_peer_sort_t;
 499
 500 /* BGP message header and packet size.  */
 501 #define BGP_MARKER_SIZE                         16
 502 #define BGP_HEADER_SIZE                         19
 503 #define BGP_MAX_PACKET_SIZE                   4096
 504 #define BGP_MAX_PACKET_SIZE_OVERFLOW          1024
 505
 506 /*
 507  * Trigger delay for bgp_announce_route().
 508  */
 509 #define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS  100
 510 #define BGP_ANNOUNCE_ROUTE_DELAY_MS        500
 511
 512 struct peer_af {
 513         /* back pointer to the peer */
 514         struct peer *peer;
 515
 516         /* which subgroup the peer_af belongs to */
 517         struct update_subgroup *subgroup;
 518
 519         /* for being part of an update subgroup's peer list */
 520         LIST_ENTRY(peer_af) subgrp_train;
 521
 522         /* for being part of a packet's peer list */
 523         LIST_ENTRY(peer_af) pkt_train;
 524
 525         struct bpacket *next_pkt_to_send;
 526
 527         /*
 528          * Trigger timer for bgp_announce_route().
 529          */
 530         struct thread *t_announce_route;
 531
 532         afi_t afi;
 533         safi_t safi;
 534         int afid;
 535 };
 536
 537 /* BGP neighbor structure. */
 538 struct peer {
 539         /* BGP structure.  */
 540         struct bgp *bgp;
 541
 542         /* reference count, primarily to allow bgp_process'ing of route_node's
 543          * to be done after a struct peer is deleted.
 544          *
 545          * named 'lock' for hysterical reasons within Quagga.
 546          */
 547         int lock;
 548
 549         /* BGP peer group.  */
 550         struct peer_group *group;
 551         uint64_t version[AFI_MAX][SAFI_MAX];
 552
 553         /* BGP peer_af structures, per configured AF on this peer */
 554         struct peer_af *peer_af_array[BGP_AF_MAX];
 555
 556         /* Peer's remote AS number. */
 557         int as_type;
 558         as_t as;
 559
 560         /* Peer's local AS number. */
 561         as_t local_as;
 562
 563         bgp_peer_sort_t sort;
 564
 565         /* Peer's Change local AS number. */
 566         as_t change_local_as;
 567
 568         /* Remote router ID. */
 569         struct in_addr remote_id;
 570
 571         /* Local router ID. */
 572         struct in_addr local_id;
 573
 574         /* Packet receive and send buffer. */
 575         struct stream *ibuf;
 576         struct stream_fifo *obuf;
 577         struct stream *work;
 578
 579         /* We use a separate stream to encode MP_REACH_NLRI for efficient
 580          * NLRI packing. peer->work stores all the other attributes. The
 581          * actual packet is then constructed by concatenating the two.
 582          */
 583         struct stream *scratch;
 584
 585         /* the doppelganger peer structure, due to dual TCP conn setup */
 586         struct peer *doppelganger;
 587
 588         /* Status of the peer. */
 589         int status;
 590         int ostatus;
 591
 592         /* FSM events, stored for debug purposes.
 593          * Note: uchar used for reduced memory usage.
 594          */
 595         unsigned char cur_event;
 596         unsigned char last_event;
 597         unsigned char last_major_event;
 598
 599         /* Peer index, used for dumping TABLE_DUMP_V2 format */
 600         uint16_t table_dump_index;
 601
 602         /* Peer information */
 603         int fd;              /* File descriptor */
 604         int ttl;             /* TTL of TCP connection to the peer. */
 605         int rtt;             /* Estimated round-trip-time from TCP_INFO */
 606         int gtsm_hops;       /* minimum hopcount to peer */
 607         char *desc;       /* Description of the peer. */
 608         unsigned short port; /* Destination port for peer */
 609         char *host;       /* Printable address of the peer. */
 610         union sockunion su;  /* Sockunion address of the peer. */
 611                              /* $FRR indent$ */
 612                              /* clang-format off */
 613 #define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
 614         time_t uptime;       /* Last Up/Down time */
 615         time_t readtime;     /* Last read time */
 616         time_t resettime;    /* Last reset time */
 617
 618         ifindex_t ifindex;     /* ifindex of the BGP connection. */
 619         char *conf_if;   /* neighbor interface config name. */
 620         struct interface *ifp; /* corresponding interface */
 621         char *ifname;     /* bind interface name. */
 622         char *update_if;
 623         union sockunion *update_source;
 624
 625         union sockunion *su_local;  /* Sockunion of local address.  */
 626         union sockunion *su_remote; /* Sockunion of remote address.  */
 627         int shared_network;      /* Is this peer shared same network. */
 628         struct bgp_nexthop nexthop; /* Nexthop */
 629
 630         /* Peer address family configuration. */
 631         u_char afc[AFI_MAX][SAFI_MAX];
 632         u_char afc_nego[AFI_MAX][SAFI_MAX];
 633         u_char afc_adv[AFI_MAX][SAFI_MAX];
 634         u_char afc_recv[AFI_MAX][SAFI_MAX];
 635
 636         /* Capability flags (reset in bgp_stop) */
 637         u_int32_t cap;
 638 #define PEER_CAP_REFRESH_ADV                (1 << 0) /* refresh advertised */
 639 #define PEER_CAP_REFRESH_OLD_RCV            (1 << 1) /* refresh old received */
 640 #define PEER_CAP_REFRESH_NEW_RCV            (1 << 2) /* refresh rfc received */
 641 #define PEER_CAP_DYNAMIC_ADV                (1 << 3) /* dynamic advertised */
 642 #define PEER_CAP_DYNAMIC_RCV                (1 << 4) /* dynamic received */
 643 #define PEER_CAP_RESTART_ADV                (1 << 5) /* restart advertised */
 644 #define PEER_CAP_RESTART_RCV                (1 << 6) /* restart received */
 645 #define PEER_CAP_AS4_ADV                    (1 << 7) /* as4 advertised */
 646 #define PEER_CAP_AS4_RCV                    (1 << 8) /* as4 received */
 647 #define PEER_CAP_RESTART_BIT_ADV            (1 << 9) /* sent restart state */
 648 #define PEER_CAP_RESTART_BIT_RCV            (1 << 10) /* peer restart state */
 649 #define PEER_CAP_ADDPATH_ADV                (1 << 11) /* addpath advertised */
 650 #define PEER_CAP_ADDPATH_RCV                (1 << 12) /* addpath received */
 651 #define PEER_CAP_ENHE_ADV                   (1 << 13) /* Extended nexthop advertised */
 652 #define PEER_CAP_ENHE_RCV                   (1 << 14) /* Extended nexthop received */
 653 #define PEER_CAP_HOSTNAME_ADV               (1 << 15) /* hostname advertised */
 654 #define PEER_CAP_HOSTNAME_RCV               (1 << 16) /* hostname received */
 655
 656         /* Capability flags (reset in bgp_stop) */
 657         u_int32_t af_cap[AFI_MAX][SAFI_MAX];
 658 #define PEER_CAP_ORF_PREFIX_SM_ADV          (1 << 0) /* send-mode advertised */
 659 #define PEER_CAP_ORF_PREFIX_RM_ADV          (1 << 1) /* receive-mode advertised */
 660 #define PEER_CAP_ORF_PREFIX_SM_RCV          (1 << 2) /* send-mode received */
 661 #define PEER_CAP_ORF_PREFIX_RM_RCV          (1 << 3) /* receive-mode received */
 662 #define PEER_CAP_ORF_PREFIX_SM_OLD_RCV      (1 << 4) /* send-mode received */
 663 #define PEER_CAP_ORF_PREFIX_RM_OLD_RCV      (1 << 5) /* receive-mode received */
 664 #define PEER_CAP_RESTART_AF_RCV             (1 << 6) /* graceful restart afi/safi received */
 665 #define PEER_CAP_RESTART_AF_PRESERVE_RCV    (1 << 7) /* graceful restart afi/safi F-bit received */
 666 #define PEER_CAP_ADDPATH_AF_TX_ADV          (1 << 8) /* addpath tx advertised */
 667 #define PEER_CAP_ADDPATH_AF_TX_RCV          (1 << 9) /* addpath tx received */
 668 #define PEER_CAP_ADDPATH_AF_RX_ADV          (1 << 10) /* addpath rx advertised */
 669 #define PEER_CAP_ADDPATH_AF_RX_RCV          (1 << 11) /* addpath rx received */
 670 #define PEER_CAP_ENHE_AF_ADV                (1 << 12) /* Extended nexthopi afi/safi advertised */
 671 #define PEER_CAP_ENHE_AF_RCV                (1 << 13) /* Extended nexthop afi/safi received */
 672 #define PEER_CAP_ENHE_AF_NEGO               (1 << 14) /* Extended nexthop afi/safi negotiated */
 673
 674         /* Global configuration flags. */
 675         u_int32_t flags;
 676 #define PEER_FLAG_PASSIVE                   (1 << 0) /* passive mode */
 677 #define PEER_FLAG_SHUTDOWN                  (1 << 1) /* shutdown */
 678 #define PEER_FLAG_DONT_CAPABILITY           (1 << 2) /* dont-capability */
 679 #define PEER_FLAG_OVERRIDE_CAPABILITY       (1 << 3) /* override-capability */
 680 #define PEER_FLAG_STRICT_CAP_MATCH          (1 << 4) /* strict-match */
 681 #define PEER_FLAG_DYNAMIC_CAPABILITY        (1 << 5) /* dynamic capability */
 682 #define PEER_FLAG_DISABLE_CONNECTED_CHECK   (1 << 6) /* disable-connected-check */
 683 #define PEER_FLAG_LOCAL_AS_NO_PREPEND       (1 << 7) /* local-as no-prepend */
 684 #define PEER_FLAG_LOCAL_AS_REPLACE_AS       (1 << 8) /* local-as no-prepend replace-as */
 685 #define PEER_FLAG_DELETE                    (1 << 9) /* mark the peer for deleting */
 686 #define PEER_FLAG_CONFIG_NODE               (1 << 10) /* the node to update configs on */
 687 #define PEER_FLAG_LONESOUL                  (1 << 11)
 688 #define PEER_FLAG_DYNAMIC_NEIGHBOR          (1 << 12) /* dynamic neighbor */
 689 #define PEER_FLAG_CAPABILITY_ENHE           (1 << 13) /* Extended next-hop (rfc 5549)*/
 690 #define PEER_FLAG_IFPEER_V6ONLY             (1 << 14) /* if-based peer is v6 only */
 691 #if ENABLE_BGP_VNC
 692 #define PEER_FLAG_IS_RFAPI_HD               (1 << 15) /* attached to rfapi HD */
 693 #endif
 694         /* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
 695         char *tx_shutdown_message;
 696
 697         /* NSF mode (graceful restart) */
 698         u_char nsf[AFI_MAX][SAFI_MAX];
 699
 700         /* Per AF configuration flags. */
 701         u_int32_t af_flags[AFI_MAX][SAFI_MAX];
 702 #define PEER_FLAG_SEND_COMMUNITY            (1 << 0) /* send-community */
 703 #define PEER_FLAG_SEND_EXT_COMMUNITY        (1 << 1) /* send-community ext. */
 704 #define PEER_FLAG_NEXTHOP_SELF              (1 << 2) /* next-hop-self */
 705 #define PEER_FLAG_REFLECTOR_CLIENT          (1 << 3) /* reflector-client */
 706 #define PEER_FLAG_RSERVER_CLIENT            (1 << 4) /* route-server-client */
 707 #define PEER_FLAG_SOFT_RECONFIG             (1 << 5) /* soft-reconfiguration */
 708 #define PEER_FLAG_AS_PATH_UNCHANGED         (1 << 6) /* transparent-as */
 709 #define PEER_FLAG_NEXTHOP_UNCHANGED         (1 << 7) /* transparent-next-hop */
 710 #define PEER_FLAG_MED_UNCHANGED             (1 << 8) /* transparent-next-hop */
 711 #define PEER_FLAG_DEFAULT_ORIGINATE         (1 << 9) /* default-originate */
 712 #define PEER_FLAG_REMOVE_PRIVATE_AS         (1 << 10) /* remove-private-as */
 713 #define PEER_FLAG_ALLOWAS_IN                (1 << 11) /* set allowas-in */
 714 #define PEER_FLAG_ORF_PREFIX_SM             (1 << 12) /* orf capability send-mode */
 715 #define PEER_FLAG_ORF_PREFIX_RM             (1 << 13) /* orf capability receive-mode */
 716 #define PEER_FLAG_MAX_PREFIX                (1 << 14) /* maximum prefix */
 717 #define PEER_FLAG_MAX_PREFIX_WARNING        (1 << 15) /* maximum prefix warning-only */
 718 #define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED   (1 << 16) /* leave link-local nexthop unchanged */
 719 #define PEER_FLAG_FORCE_NEXTHOP_SELF        (1 << 17) /* next-hop-self force */
 720 #define PEER_FLAG_REMOVE_PRIVATE_AS_ALL     (1 << 18) /* remove-private-as all */
 721 #define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
 722 #define PEER_FLAG_AS_OVERRIDE               (1 << 20) /* as-override */
 723 #define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
 724 #define PEER_FLAG_ADDPATH_TX_ALL_PATHS      (1 << 22) /* addpath-tx-all-paths */
 725 #define PEER_FLAG_ADDPATH_TX_BESTPATH_PER_AS (1 << 23) /* addpath-tx-bestpath-per-AS */
 726 #define PEER_FLAG_WEIGHT                    (1 << 24) /* weight */
 727 #define PEER_FLAG_ALLOWAS_IN_ORIGIN         (1 << 25) /* allowas-in origin */
 728 #define PEER_FLAG_SEND_LARGE_COMMUNITY      (1 << 26) /* Send large Communities */
 729
 730         /* MD5 password */
 731         char *password;
 732
 733         /* default-originate route-map.  */
 734         struct {
 735                 char *name;
 736                 struct route_map *map;
 737         } default_rmap[AFI_MAX][SAFI_MAX];
 738
 739         /* Peer status flags. */
 740         u_int16_t sflags;
 741 #define PEER_STATUS_ACCEPT_PEER       (1 << 0) /* accept peer */
 742 #define PEER_STATUS_PREFIX_OVERFLOW   (1 << 1) /* prefix-overflow */
 743 #define PEER_STATUS_CAPABILITY_OPEN   (1 << 2) /* capability open send */
 744 #define PEER_STATUS_HAVE_ACCEPT       (1 << 3) /* accept peer's parent */
 745 #define PEER_STATUS_GROUP             (1 << 4) /* peer-group conf */
 746 #define PEER_STATUS_NSF_MODE          (1 << 5) /* NSF aware peer */
 747 #define PEER_STATUS_NSF_WAIT          (1 << 6) /* wait comeback peer */
 748
 749         /* Peer status af flags (reset in bgp_stop) */
 750         u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
 751 #define PEER_STATUS_ORF_PREFIX_SEND   (1 << 0) /* prefix-list send peer */
 752 #define PEER_STATUS_ORF_WAIT_REFRESH  (1 << 1) /* wait refresh received peer */
 753 #define PEER_STATUS_PREFIX_THRESHOLD  (1 << 2) /* exceed prefix-threshold */
 754 #define PEER_STATUS_PREFIX_LIMIT      (1 << 3) /* exceed prefix-limit */
 755 #define PEER_STATUS_EOR_SEND          (1 << 4) /* end-of-rib send to peer */
 756 #define PEER_STATUS_EOR_RECEIVED      (1 << 5) /* end-of-rib received from peer */
 757
 758         /* Default attribute value for the peer. */
 759         u_int32_t config;
 760 #define PEER_CONFIG_TIMER             (1 << 0) /* keepalive & holdtime */
 761 #define PEER_CONFIG_CONNECT           (1 << 1) /* connect */
 762 #define PEER_CONFIG_ROUTEADV          (1 << 2) /* route advertise */
 763
 764         u_int32_t holdtime;
 765         u_int32_t keepalive;
 766         u_int32_t connect;
 767         u_int32_t routeadv;
 768
 769         /* Timer values. */
 770         u_int32_t v_start;
 771         u_int32_t v_connect;
 772         u_int32_t v_holdtime;
 773         u_int32_t v_keepalive;
 774         u_int32_t v_routeadv;
 775         u_int32_t v_pmax_restart;
 776         u_int32_t v_gr_restart;
 777
 778         /* Threads. */
 779         struct thread *t_read;
 780         struct thread *t_write;
 781         struct thread *t_start;
 782         struct thread *t_connect;
 783         struct thread *t_holdtime;
 784         struct thread *t_keepalive;
 785         struct thread *t_routeadv;
 786         struct thread *t_pmax_restart;
 787         struct thread *t_gr_restart;
 788         struct thread *t_gr_stale;
 789
 790         /* workqueues */
 791         struct work_queue *clear_node_queue;
 792
 793         /* Statistics field */
 794         u_int32_t open_in;       /* Open message input count */
 795         u_int32_t open_out;     /* Open message output count */
 796         u_int32_t update_in;       /* Update message input count */
 797         u_int32_t update_out;      /* Update message ouput count */
 798         time_t update_time;     /* Update message received time. */
 799         u_int32_t keepalive_in;    /* Keepalive input count */
 800         u_int32_t keepalive_out;   /* Keepalive output count */
 801         u_int32_t notify_in;       /* Notify input count */
 802         u_int32_t notify_out;      /* Notify output count */
 803         u_int32_t refresh_in;      /* Route Refresh input count */
 804         u_int32_t refresh_out;     /* Route Refresh output count */
 805         u_int32_t dynamic_cap_in;  /* Dynamic Capability input count.  */
 806         u_int32_t dynamic_cap_out; /* Dynamic Capability output count.  */
 807
 808         /* BGP state count */
 809         u_int32_t established; /* Established */
 810         u_int32_t dropped;     /* Dropped */
 811
 812         /* Update delay related fields */
 813         u_char update_delay_over; /* When this is set, BGP is no more waiting
 814                                      for EOR */
 815
 816         /* Syncronization list and time.  */
 817         struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
 818         time_t synctime;
 819         time_t last_write;  /* timestamp when the last msg was written */
 820         time_t last_update; /* timestamp when the last UPDATE msg was written */
 821
 822         /* Send prefix count. */
 823         unsigned long scount[AFI_MAX][SAFI_MAX];
 824
 825         /* Announcement attribute hash.  */
 826         struct hash *hash[AFI_MAX][SAFI_MAX];
 827
 828         /* Notify data. */
 829         struct bgp_notify notify;
 830
 831         /* Whole packet size to be read. */
 832         unsigned long packet_size;
 833
 834         /* Filter structure. */
 835         struct bgp_filter filter[AFI_MAX][SAFI_MAX];
 836
 837         /* ORF Prefix-list */
 838         struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
 839
 840         /* Text description of last attribute rcvd */
 841         char rcvd_attr_str[BUFSIZ];
 842
 843         /* Track if we printed the attribute in debugs */
 844         int rcvd_attr_printed;
 845
 846         /* Prefix count. */
 847         unsigned long pcount[AFI_MAX][SAFI_MAX];
 848
 849         /* Max prefix count. */
 850         unsigned long pmax[AFI_MAX][SAFI_MAX];
 851         u_char pmax_threshold[AFI_MAX][SAFI_MAX];
 852         u_int16_t pmax_restart[AFI_MAX][SAFI_MAX];
 853 #define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
 854
 855         /* allowas-in. */
 856         char allowas_in[AFI_MAX][SAFI_MAX];
 857
 858         /* weight */
 859         unsigned long weight[AFI_MAX][SAFI_MAX];
 860
 861         /* peer reset cause */
 862         char last_reset;
 863 #define PEER_DOWN_RID_CHANGE             1 /* bgp router-id command */
 864 #define PEER_DOWN_REMOTE_AS_CHANGE       2 /* neighbor remote-as command */
 865 #define PEER_DOWN_LOCAL_AS_CHANGE        3 /* neighbor local-as command */
 866 #define PEER_DOWN_CLID_CHANGE            4 /* bgp cluster-id command */
 867 #define PEER_DOWN_CONFED_ID_CHANGE       5 /* bgp confederation identifier command */
 868 #define PEER_DOWN_CONFED_PEER_CHANGE     6 /* bgp confederation peer command */
 869 #define PEER_DOWN_RR_CLIENT_CHANGE       7 /* neighbor route-reflector-client command */
 870 #define PEER_DOWN_RS_CLIENT_CHANGE       8 /* neighbor route-server-client command */
 871 #define PEER_DOWN_UPDATE_SOURCE_CHANGE   9 /* neighbor update-source command */
 872 #define PEER_DOWN_AF_ACTIVATE           10 /* neighbor activate command */
 873 #define PEER_DOWN_USER_SHUTDOWN         11 /* neighbor shutdown command */
 874 #define PEER_DOWN_USER_RESET            12 /* clear ip bgp command */
 875 #define PEER_DOWN_NOTIFY_RECEIVED       13 /* notification received */
 876 #define PEER_DOWN_NOTIFY_SEND           14 /* notification send */
 877 #define PEER_DOWN_CLOSE_SESSION         15 /* tcp session close */
 878 #define PEER_DOWN_NEIGHBOR_DELETE       16 /* neghbor delete */
 879 #define PEER_DOWN_RMAP_BIND             17 /* neghbor peer-group command */
 880 #define PEER_DOWN_RMAP_UNBIND           18 /* no neighbor peer-group command */
 881 #define PEER_DOWN_CAPABILITY_CHANGE     19 /* neighbor capability command */
 882 #define PEER_DOWN_PASSIVE_CHANGE        20 /* neighbor passive command */
 883 #define PEER_DOWN_MULTIHOP_CHANGE       21 /* neighbor multihop command */
 884 #define PEER_DOWN_NSF_CLOSE_SESSION     22 /* NSF tcp session close */
 885 #define PEER_DOWN_V6ONLY_CHANGE         23 /* if-based peering v6only toggled */
 886 #define PEER_DOWN_BFD_DOWN              24 /* BFD down */
 887 #define PEER_DOWN_IF_DOWN               25 /* Interface down */
 888 #define PEER_DOWN_NBR_ADDR_DEL          26 /* Peer address lost */
 889         unsigned long last_reset_cause_size;
 890         u_char last_reset_cause[BGP_MAX_PACKET_SIZE];
 891
 892         /* The kind of route-map Flags.*/
 893         u_char rmap_type;
 894 #define PEER_RMAP_TYPE_IN             (1 << 0) /* neighbor route-map in */
 895 #define PEER_RMAP_TYPE_OUT            (1 << 1) /* neighbor route-map out */
 896 #define PEER_RMAP_TYPE_NETWORK        (1 << 2) /* network route-map */
 897 #define PEER_RMAP_TYPE_REDISTRIBUTE   (1 << 3) /* redistribute route-map */
 898 #define PEER_RMAP_TYPE_DEFAULT        (1 << 4) /* default-originate route-map */
 899 #define PEER_RMAP_TYPE_NOSET          (1 << 5) /* not allow to set commands */
 900 #define PEER_RMAP_TYPE_IMPORT         (1 << 6) /* neighbor route-map import */
 901 #define PEER_RMAP_TYPE_EXPORT         (1 << 7) /* neighbor route-map export */
 902
 903         /* peer specific BFD information */
 904         struct bfd_info *bfd_info;
 905
 906         /* hostname and domainname advertised by host */
 907         char *hostname;
 908         char *domainname;
 909
 910         QOBJ_FIELDS
 911 };
 912 DECLARE_QOBJ_TYPE(peer)
 913
 914 /* Check if suppress start/restart of sessions to peer. */
 915 #define BGP_PEER_START_SUPPRESSED(P)                                           \
 916         (CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN)                            \
 917          || CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
 918
 919 #define PEER_PASSWORD_MINLEN    (1)
 920 #define PEER_PASSWORD_MAXLEN    (80)
 921
 922 /* This structure's member directly points incoming packet data
 923    stream. */
 924 struct bgp_nlri {
 925         /* AFI.  */
 926         uint16_t afi; /* iana_afi_t */
 927
 928         /* SAFI.  */
 929         uint8_t safi; /* iana_safi_t */
 930
 931         /* Pointer to NLRI byte stream.  */
 932         u_char *nlri;
 933
 934         /* Length of whole NLRI.  */
 935         bgp_size_t length;
 936 };
 937
 938 /* BGP versions.  */
 939 #define BGP_VERSION_4                            4
 940
 941 /* Default BGP port number.  */
 942 #define BGP_PORT_DEFAULT                       179
 943
 944 /* BGP minimum message size.  */
 945 #define BGP_MSG_OPEN_MIN_SIZE                   (BGP_HEADER_SIZE + 10)
 946 #define BGP_MSG_UPDATE_MIN_SIZE                 (BGP_HEADER_SIZE + 4)
 947 #define BGP_MSG_NOTIFY_MIN_SIZE                 (BGP_HEADER_SIZE + 2)
 948 #define BGP_MSG_KEEPALIVE_MIN_SIZE              (BGP_HEADER_SIZE + 0)
 949 #define BGP_MSG_ROUTE_REFRESH_MIN_SIZE          (BGP_HEADER_SIZE + 4)
 950 #define BGP_MSG_CAPABILITY_MIN_SIZE             (BGP_HEADER_SIZE + 3)
 951
 952 /* BGP message types.  */
 953 #define BGP_MSG_OPEN                             1
 954 #define BGP_MSG_UPDATE                           2
 955 #define BGP_MSG_NOTIFY                           3
 956 #define BGP_MSG_KEEPALIVE                        4
 957 #define BGP_MSG_ROUTE_REFRESH_NEW                5
 958 #define BGP_MSG_CAPABILITY                       6
 959 #define BGP_MSG_ROUTE_REFRESH_OLD              128
 960
 961 /* BGP open optional parameter.  */
 962 #define BGP_OPEN_OPT_AUTH                        1
 963 #define BGP_OPEN_OPT_CAP                         2
 964
 965 /* BGP4 attribute type codes.  */
 966 #define BGP_ATTR_ORIGIN                          1
 967 #define BGP_ATTR_AS_PATH                         2
 968 #define BGP_ATTR_NEXT_HOP                        3
 969 #define BGP_ATTR_MULTI_EXIT_DISC                 4
 970 #define BGP_ATTR_LOCAL_PREF                      5
 971 #define BGP_ATTR_ATOMIC_AGGREGATE                6
 972 #define BGP_ATTR_AGGREGATOR                      7
 973 #define BGP_ATTR_COMMUNITIES                     8
 974 #define BGP_ATTR_ORIGINATOR_ID                   9
 975 #define BGP_ATTR_CLUSTER_LIST                   10
 976 #define BGP_ATTR_DPA                            11
 977 #define BGP_ATTR_ADVERTISER                     12
 978 #define BGP_ATTR_RCID_PATH                      13
 979 #define BGP_ATTR_MP_REACH_NLRI                  14
 980 #define BGP_ATTR_MP_UNREACH_NLRI                15
 981 #define BGP_ATTR_EXT_COMMUNITIES                16
 982 #define BGP_ATTR_AS4_PATH                       17
 983 #define BGP_ATTR_AS4_AGGREGATOR                 18
 984 #define BGP_ATTR_AS_PATHLIMIT                   21
 985 #define BGP_ATTR_ENCAP                          23
 986 #define BGP_ATTR_LARGE_COMMUNITIES              32
 987 #define BGP_ATTR_PREFIX_SID                     40
 988 #if ENABLE_BGP_VNC
 989 #define BGP_ATTR_VNC                           255
 990 #endif
 991
 992 /* BGP update origin.  */
 993 #define BGP_ORIGIN_IGP                           0
 994 #define BGP_ORIGIN_EGP                           1
 995 #define BGP_ORIGIN_INCOMPLETE                    2
 996
 997 /* BGP notify message codes.  */
 998 #define BGP_NOTIFY_HEADER_ERR                    1
 999 #define BGP_NOTIFY_OPEN_ERR                      2
1000 #define BGP_NOTIFY_UPDATE_ERR                    3
1001 #define BGP_NOTIFY_HOLD_ERR                      4
1002 #define BGP_NOTIFY_FSM_ERR                       5
1003 #define BGP_NOTIFY_CEASE                         6
1004 #define BGP_NOTIFY_CAPABILITY_ERR                7
1005
1006 #define BGP_NOTIFY_SUBCODE_UNSPECIFIC            0
1007
1008 /* BGP_NOTIFY_HEADER_ERR sub codes.  */
1009 #define BGP_NOTIFY_HEADER_NOT_SYNC               1
1010 #define BGP_NOTIFY_HEADER_BAD_MESLEN             2
1011 #define BGP_NOTIFY_HEADER_BAD_MESTYPE            3
1012
1013 /* BGP_NOTIFY_OPEN_ERR sub codes.  */
1014 #define BGP_NOTIFY_OPEN_MALFORMED_ATTR           0
1015 #define BGP_NOTIFY_OPEN_UNSUP_VERSION            1
1016 #define BGP_NOTIFY_OPEN_BAD_PEER_AS              2
1017 #define BGP_NOTIFY_OPEN_BAD_BGP_IDENT            3
1018 #define BGP_NOTIFY_OPEN_UNSUP_PARAM              4
1019 #define BGP_NOTIFY_OPEN_AUTH_FAILURE             5
1020 #define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME          6
1021 #define BGP_NOTIFY_OPEN_UNSUP_CAPBL              7
1022
1023 /* BGP_NOTIFY_UPDATE_ERR sub codes.  */
1024 #define BGP_NOTIFY_UPDATE_MAL_ATTR               1
1025 #define BGP_NOTIFY_UPDATE_UNREC_ATTR             2
1026 #define BGP_NOTIFY_UPDATE_MISS_ATTR              3
1027 #define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR          4
1028 #define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR          5
1029 #define BGP_NOTIFY_UPDATE_INVAL_ORIGIN           6
1030 #define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP          7
1031 #define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP         8
1032 #define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR           9
1033 #define BGP_NOTIFY_UPDATE_INVAL_NETWORK         10
1034 #define BGP_NOTIFY_UPDATE_MAL_AS_PATH           11
1035
1036 /* BGP_NOTIFY_CEASE sub codes (RFC 4486).  */
1037 #define BGP_NOTIFY_CEASE_MAX_PREFIX              1
1038 #define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN          2
1039 #define BGP_NOTIFY_CEASE_PEER_UNCONFIG           3
1040 #define BGP_NOTIFY_CEASE_ADMIN_RESET             4
1041 #define BGP_NOTIFY_CEASE_CONNECT_REJECT          5
1042 #define BGP_NOTIFY_CEASE_CONFIG_CHANGE           6
1043 #define BGP_NOTIFY_CEASE_COLLISION_RESOLUTION    7
1044 #define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE         8
1045
1046 /* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
1047 #define BGP_NOTIFY_CAPABILITY_INVALID_ACTION     1
1048 #define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH     2
1049 #define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE     3
1050
1051 /* BGP finite state machine status.  */
1052 #define Idle                                     1
1053 #define Connect                                  2
1054 #define Active                                   3
1055 #define OpenSent                                 4
1056 #define OpenConfirm                              5
1057 #define Established                              6
1058 #define Clearing                                 7
1059 #define Deleted                                  8
1060 #define BGP_STATUS_MAX                           9
1061
1062 /* BGP finite state machine events.  */
1063 #define BGP_Start                                1
1064 #define BGP_Stop                                 2
1065 #define TCP_connection_open                      3
1066 #define TCP_connection_closed                    4
1067 #define TCP_connection_open_failed               5
1068 #define TCP_fatal_error                          6
1069 #define ConnectRetry_timer_expired               7
1070 #define Hold_Timer_expired                       8
1071 #define KeepAlive_timer_expired                  9
1072 #define Receive_OPEN_message                    10
1073 #define Receive_KEEPALIVE_message               11
1074 #define Receive_UPDATE_message                  12
1075 #define Receive_NOTIFICATION_message            13
1076 #define Clearing_Completed                      14
1077 #define BGP_EVENTS_MAX                          15
1078
1079 /* BGP timers default value.  */
1080 /* note: the DFLT_ ones depend on compile-time "defaults" selection */
1081 #define BGP_INIT_START_TIMER                     1
1082 #define BGP_DEFAULT_HOLDTIME                      DFLT_BGP_HOLDTIME
1083 #define BGP_DEFAULT_KEEPALIVE                     DFLT_BGP_KEEPALIVE
1084 #define BGP_DEFAULT_EBGP_ROUTEADV                0
1085 #define BGP_DEFAULT_IBGP_ROUTEADV                0
1086 #define BGP_DEFAULT_CONNECT_RETRY                 DFLT_BGP_TIMERS_CONNECT
1087
1088 /* BGP default local preference.  */
1089 #define BGP_DEFAULT_LOCAL_PREF                 100
1090
1091 /* BGP default subgroup packet queue max .  */
1092 #define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX      40
1093
1094 /* BGP graceful restart  */
1095 #define BGP_DEFAULT_RESTART_TIME               120
1096 #define BGP_DEFAULT_STALEPATH_TIME             360
1097
1098 /* BGP uptime string length.  */
1099 #define BGP_UPTIME_LEN 25
1100
1101 /* Default configuration settings for bgpd.  */
1102 #define BGP_VTY_PORT                          2605
1103 #define BGP_DEFAULT_CONFIG             "bgpd.conf"
1104
1105 /* Check AS path loop when we send NLRI.  */
1106 /* #define BGP_SEND_ASPATH_CHECK */
1107
1108 /* BGP Dynamic Neighbors feature */
1109 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT    100
1110 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN          1
1111 #define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX       5000
1112
1113 /* Flag for peer_clear_soft().  */
1114 enum bgp_clear_type {
1115         BGP_CLEAR_SOFT_NONE,
1116         BGP_CLEAR_SOFT_OUT,
1117         BGP_CLEAR_SOFT_IN,
1118         BGP_CLEAR_SOFT_BOTH,
1119         BGP_CLEAR_SOFT_IN_ORF_PREFIX
1120 };
1121
1122 /* Macros. */
1123 #define BGP_INPUT(P)         ((P)->ibuf)
1124 #define BGP_INPUT_PNT(P)     (STREAM_PNT(BGP_INPUT(P)))
1125 #define BGP_IS_VALID_STATE_FOR_NOTIF(S)                                        \
1126         (((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
1127
1128 /* BGP error codes.  */
1129 #define BGP_SUCCESS                               0
1130 #define BGP_ERR_INVALID_VALUE                    -1
1131 #define BGP_ERR_INVALID_FLAG                     -2
1132 #define BGP_ERR_INVALID_AS                       -3
1133 #define BGP_ERR_INVALID_BGP                      -4
1134 #define BGP_ERR_PEER_GROUP_MEMBER                -5
1135 #define BGP_ERR_MULTIPLE_INSTANCE_USED           -6
1136 #define BGP_ERR_PEER_GROUP_NO_REMOTE_AS          -7
1137 #define BGP_ERR_PEER_GROUP_CANT_CHANGE           -8
1138 #define BGP_ERR_PEER_GROUP_MISMATCH              -9
1139 #define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT  -10
1140 #define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET       -11
1141 #define BGP_ERR_AS_MISMATCH                     -12
1142 #define BGP_ERR_PEER_FLAG_CONFLICT              -13
1143 #define BGP_ERR_PEER_GROUP_SHUTDOWN             -14
1144 #define BGP_ERR_PEER_FILTER_CONFLICT            -15
1145 #define BGP_ERR_NOT_INTERNAL_PEER               -16
1146 #define BGP_ERR_REMOVE_PRIVATE_AS               -17
1147 #define BGP_ERR_AF_UNCONFIGURED                 -18
1148 #define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED      -19
1149 #define BGP_ERR_INSTANCE_MISMATCH               -20
1150 #define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP  -21
1151 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS    -22
1152 #define BGP_ERR_TCPSIG_FAILED                   -23
1153 #define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK   -24
1154 #define BGP_ERR_NO_IBGP_WITH_TTLHACK            -25
1155 #define BGP_ERR_NO_INTERFACE_CONFIG             -26
1156 #define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS    -27
1157 #define BGP_ERR_AS_OVERRIDE                     -28
1158 #define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
1159 #define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS  -30
1160 #define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
1161 #define BGP_ERR_INVALID_FOR_DYNAMIC_PEER        -32
1162 #define BGP_ERR_MAX                             -33
1163 #define BGP_ERR_INVALID_FOR_DIRECT_PEER         -34
1164 #define BGP_ERR_PEER_SAFI_CONFLICT              -35
1165
1166 /*
1167  * Enumeration of different policy kinds a peer can be configured with.
1168  */
1169 typedef enum {
1170         BGP_POLICY_ROUTE_MAP,
1171         BGP_POLICY_FILTER_LIST,
1172         BGP_POLICY_PREFIX_LIST,
1173         BGP_POLICY_DISTRIBUTE_LIST,
1174 } bgp_policy_type_e;
1175
1176 extern struct bgp_master *bm;
1177 extern unsigned int multipath_num;
1178
1179 /* Prototypes. */
1180 extern void bgp_terminate(void);
1181 extern void bgp_reset(void);
1182 extern time_t bgp_clock(void);
1183 extern void bgp_zclient_reset(void);
1184 extern int bgp_nexthop_set(union sockunion *, union sockunion *,
1185                            struct bgp_nexthop *, struct peer *);
1186 extern struct bgp *bgp_get_default(void);
1187 extern struct bgp *bgp_lookup(as_t, const char *);
1188 extern struct bgp *bgp_lookup_by_name(const char *);
1189 extern struct bgp *bgp_lookup_by_vrf_id(vrf_id_t);
1190 extern struct peer *peer_lookup(struct bgp *, union sockunion *);
1191 extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
1192 extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
1193 extern void bgp_peer_conf_if_to_su_update(struct peer *);
1194 extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
1195 extern struct peer_group *peer_group_lookup(struct bgp *, const char *);
1196 extern struct peer_group *peer_group_get(struct bgp *, const char *);
1197 extern struct peer *peer_create_bind_dynamic_neighbor(struct bgp *,
1198                                                       union sockunion *,
1199                                                       struct peer_group *);
1200 extern struct prefix *
1201 peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
1202 extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
1203                                                              struct prefix *,
1204                                                              struct prefix **);
1205 extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
1206                                                  union sockunion *);
1207 extern void peer_drop_dynamic_neighbor(struct peer *);
1208
1209 /*
1210  * Peers are incredibly easy to memory leak
1211  * due to the various ways that they are actually used
1212  * Provide some functionality to debug locks and unlocks
1213  */
1214 extern struct peer *peer_lock_with_caller(const char *, struct peer *);
1215 extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
1216 #define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
1217 #define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
1218
1219 extern bgp_peer_sort_t peer_sort(struct peer *peer);
1220 extern int peer_active(struct peer *);
1221 extern int peer_active_nego(struct peer *);
1222 extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
1223 extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
1224                                 as_t, as_t, int, afi_t, safi_t,
1225                                 struct peer_group *);
1226 extern struct peer *peer_create_accept(struct bgp *);
1227 extern void peer_xfer_config(struct peer *dst, struct peer *src);
1228 extern char *peer_uptime(time_t, char *, size_t, u_char, json_object *);
1229
1230 extern int bgp_config_write(struct vty *);
1231 extern void bgp_config_write_family_header(struct vty *, afi_t, safi_t, int *);
1232
1233 extern void bgp_master_init(struct thread_master *master);
1234
1235 extern void bgp_init(void);
1236 extern void bgp_route_map_init(void);
1237 extern void bgp_session_reset(struct peer *);
1238
1239 extern int bgp_option_set(int);
1240 extern int bgp_option_unset(int);
1241 extern int bgp_option_check(int);
1242
1243 extern int bgp_get(struct bgp **, as_t *, const char *, enum bgp_instance_type);
1244 extern void bgp_instance_up(struct bgp *);
1245 extern void bgp_instance_down(struct bgp *);
1246 extern int bgp_delete(struct bgp *);
1247
1248 extern int bgp_flag_set(struct bgp *, int);
1249 extern int bgp_flag_unset(struct bgp *, int);
1250 extern int bgp_flag_check(struct bgp *, int);
1251
1252 extern void bgp_lock(struct bgp *);
1253 extern void bgp_unlock(struct bgp *);
1254
1255 extern void bgp_router_id_zebra_bump(vrf_id_t, const struct prefix *);
1256 extern int bgp_router_id_static_set(struct bgp *, struct in_addr);
1257
1258 extern int bgp_cluster_id_set(struct bgp *, struct in_addr *);
1259 extern int bgp_cluster_id_unset(struct bgp *);
1260
1261 extern int bgp_confederation_id_set(struct bgp *, as_t);
1262 extern int bgp_confederation_id_unset(struct bgp *);
1263 extern int bgp_confederation_peers_check(struct bgp *, as_t);
1264
1265 extern int bgp_confederation_peers_add(struct bgp *, as_t);
1266 extern int bgp_confederation_peers_remove(struct bgp *, as_t);
1267
1268 extern int bgp_timers_set(struct bgp *, u_int32_t keepalive,
1269                           u_int32_t holdtime);
1270 extern int bgp_timers_unset(struct bgp *);
1271
1272 extern int bgp_default_local_preference_set(struct bgp *, u_int32_t);
1273 extern int bgp_default_local_preference_unset(struct bgp *);
1274
1275 extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, u_int32_t);
1276 extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
1277
1278 extern int bgp_listen_limit_set(struct bgp *, int);
1279 extern int bgp_listen_limit_unset(struct bgp *);
1280
1281 extern int bgp_update_delay_active(struct bgp *);
1282 extern int bgp_update_delay_configured(struct bgp *);
1283 extern void peer_as_change(struct peer *, as_t, int);
1284 extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
1285                           int, afi_t, safi_t);
1286 extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
1287 extern int peer_delete(struct peer *peer);
1288 extern int peer_group_delete(struct peer_group *);
1289 extern int peer_group_remote_as_delete(struct peer_group *);
1290 extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
1291
1292 extern int peer_activate(struct peer *, afi_t, safi_t);
1293 extern int peer_deactivate(struct peer *, afi_t, safi_t);
1294 extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
1295
1296 extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
1297                            struct peer_group *, as_t *);
1298 extern int peer_group_unbind(struct bgp *, struct peer *, struct peer_group *);
1299
1300 extern int peer_flag_set(struct peer *, u_int32_t);
1301 extern int peer_flag_unset(struct peer *, u_int32_t);
1302
1303 extern int peer_af_flag_set(struct peer *, afi_t, safi_t, u_int32_t);
1304 extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, u_int32_t);
1305 extern int peer_af_flag_check(struct peer *, afi_t, safi_t, u_int32_t);
1306
1307 extern int peer_ebgp_multihop_set(struct peer *, int);
1308 extern int peer_ebgp_multihop_unset(struct peer *);
1309 extern int is_ebgp_multihop_configured(struct peer *peer);
1310
1311 extern int peer_description_set(struct peer *, const char *);
1312 extern int peer_description_unset(struct peer *);
1313
1314 extern int peer_update_source_if_set(struct peer *, const char *);
1315 extern int peer_update_source_addr_set(struct peer *, const union sockunion *);
1316 extern int peer_update_source_unset(struct peer *);
1317
1318 extern int peer_default_originate_set(struct peer *, afi_t, safi_t,
1319                                       const char *);
1320 extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
1321
1322 extern int peer_port_set(struct peer *, u_int16_t);
1323 extern int peer_port_unset(struct peer *);
1324
1325 extern int peer_weight_set(struct peer *, afi_t, safi_t, u_int16_t);
1326 extern int peer_weight_unset(struct peer *, afi_t, safi_t);
1327
1328 extern int peer_timers_set(struct peer *, u_int32_t keepalive,
1329                            u_int32_t holdtime);
1330 extern int peer_timers_unset(struct peer *);
1331
1332 extern int peer_timers_connect_set(struct peer *, u_int32_t);
1333 extern int peer_timers_connect_unset(struct peer *);
1334
1335 extern int peer_advertise_interval_set(struct peer *, u_int32_t);
1336 extern int peer_advertise_interval_unset(struct peer *);
1337
1338 extern void peer_interface_set(struct peer *, const char *);
1339 extern void peer_interface_unset(struct peer *);
1340
1341 extern int peer_distribute_set(struct peer *, afi_t, safi_t, int, const char *);
1342 extern int peer_distribute_unset(struct peer *, afi_t, safi_t, int);
1343
1344 extern int peer_allowas_in_set(struct peer *, afi_t, safi_t, int, int);
1345 extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
1346
1347 extern int peer_local_as_set(struct peer *, as_t, int, int);
1348 extern int peer_local_as_unset(struct peer *);
1349
1350 extern int peer_prefix_list_set(struct peer *, afi_t, safi_t, int,
1351                                 const char *);
1352 extern int peer_prefix_list_unset(struct peer *, afi_t, safi_t, int);
1353
1354 extern int peer_aslist_set(struct peer *, afi_t, safi_t, int, const char *);
1355 extern int peer_aslist_unset(struct peer *, afi_t, safi_t, int);
1356
1357 extern int peer_route_map_set(struct peer *, afi_t, safi_t, int, const char *);
1358 extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
1359
1360 extern int peer_unsuppress_map_set(struct peer *, afi_t, safi_t, const char *);
1361
1362 extern int peer_password_set(struct peer *, const char *);
1363 extern int peer_password_unset(struct peer *);
1364
1365 extern int peer_unsuppress_map_unset(struct peer *, afi_t, safi_t);
1366
1367 extern int peer_maximum_prefix_set(struct peer *, afi_t, safi_t, u_int32_t,
1368                                    u_char, int, u_int16_t);
1369 extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
1370
1371 extern int peer_clear(struct peer *, struct listnode **);
1372 extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
1373
1374 extern int peer_ttl_security_hops_set(struct peer *, int);
1375 extern int peer_ttl_security_hops_unset(struct peer *);
1376
1377 extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
1378 extern int peer_tx_shutdown_message_unset(struct peer *);
1379
1380 extern int bgp_route_map_update_timer(struct thread *thread);
1381 extern void bgp_route_map_terminate(void);
1382
1383 extern int peer_cmp(struct peer *p1, struct peer *p2);
1384
1385 extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
1386                                      afi_t *afi, safi_t *safi);
1387 extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
1388                                      iana_afi_t *pkt_afi, iana_safi_t *pkt_safi);
1389
1390 extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
1391 extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
1392 extern int peer_af_delete(struct peer *, afi_t, safi_t);
1393
1394 extern void bgp_close(void);
1395
1396 static inline int afindex(afi_t afi, safi_t safi)
1397 {
1398         switch (afi) {
1399         case AFI_IP:
1400                 switch (safi) {
1401                 case SAFI_UNICAST:
1402                         return BGP_AF_IPV4_UNICAST;
1403                         break;
1404                 case SAFI_MULTICAST:
1405                         return BGP_AF_IPV4_MULTICAST;
1406                         break;
1407                 case SAFI_LABELED_UNICAST:
1408                         return BGP_AF_IPV4_LBL_UNICAST;
1409                         break;
1410                 case SAFI_MPLS_VPN:
1411                         return BGP_AF_IPV4_VPN;
1412                         break;
1413                 case SAFI_ENCAP:
1414                         return BGP_AF_IPV4_ENCAP;
1415                         break;
1416                 default:
1417                         return BGP_AF_MAX;
1418                         break;
1419                 }
1420                 break;
1421         case AFI_IP6:
1422                 switch (safi) {
1423                 case SAFI_UNICAST:
1424                         return BGP_AF_IPV6_UNICAST;
1425                         break;
1426                 case SAFI_MULTICAST:
1427                         return BGP_AF_IPV6_MULTICAST;
1428                         break;
1429                 case SAFI_LABELED_UNICAST:
1430                         return BGP_AF_IPV6_LBL_UNICAST;
1431                         break;
1432                 case SAFI_MPLS_VPN:
1433                         return BGP_AF_IPV6_VPN;
1434                         break;
1435                 case SAFI_ENCAP:
1436                         return BGP_AF_IPV6_ENCAP;
1437                         break;
1438                 default:
1439                         return BGP_AF_MAX;
1440                         break;
1441                 }
1442                 break;
1443         case AFI_L2VPN:
1444                 switch (safi) {
1445                 case SAFI_EVPN:
1446                         return BGP_AF_L2VPN_EVPN;
1447                         break;
1448                 default:
1449                         return BGP_AF_MAX;
1450                         break;
1451                 }
1452         default:
1453                 return BGP_AF_MAX;
1454                 break;
1455         }
1456 }
1457
1458 /* If the peer is not a peer-group but is bound to a peer-group return 1 */
1459 static inline int peer_group_active(struct peer *peer)
1460 {
1461         if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
1462                 return 1;
1463         return 0;
1464 }
1465
1466 /* If peer is negotiated at least one address family return 1. */
1467 static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
1468 {
1469         if (peer->afc_nego[afi][SAFI_UNICAST]
1470             || peer->afc_nego[afi][SAFI_MULTICAST]
1471             || peer->afc_nego[afi][SAFI_LABELED_UNICAST]
1472             || peer->afc_nego[afi][SAFI_MPLS_VPN]
1473             || peer->afc_nego[afi][SAFI_ENCAP]
1474             || peer->afc_nego[afi][SAFI_EVPN])
1475                 return 1;
1476         return 0;
1477 }
1478
1479 /* If at least one address family activated for group, return 1. */
1480 static inline int peer_group_af_configured(struct peer_group *group)
1481 {
1482         struct peer *peer = group->conf;
1483
1484         if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
1485             || peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
1486             || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
1487             || peer->afc[AFI_IP6][SAFI_UNICAST]
1488             || peer->afc[AFI_IP6][SAFI_MULTICAST]
1489             || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
1490             || peer->afc[AFI_IP6][SAFI_MPLS_VPN]
1491             || peer->afc[AFI_IP6][SAFI_ENCAP] || peer->afc[AFI_IP6][SAFI_EVPN])
1492                 return 1;
1493         return 0;
1494 }
1495
1496 static inline char *timestamp_string(time_t ts)
1497 {
1498         time_t tbuf;
1499         tbuf = time(NULL) - (bgp_clock() - ts);
1500         return ctime(&tbuf);
1501 }
1502
1503 static inline int peer_established(struct peer *peer)
1504 {
1505         if (peer->status == Established)
1506                 return 1;
1507         return 0;
1508 }
1509
1510 static inline int peer_dynamic_neighbor(struct peer *peer)
1511 {
1512         return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
1513 }
1514
1515 static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
1516 {
1517         return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
1518 }
1519
1520 /* Lookup VRF for BGP instance based on its type. */
1521 static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
1522 {
1523         struct vrf *vrf;
1524
1525         if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
1526                 vrf = vrf_lookup_by_id(VRF_DEFAULT);
1527         else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
1528                 vrf = vrf_lookup_by_name(bgp->name);
1529         else
1530                 vrf = NULL;
1531
1532         return vrf;
1533 }
1534
1535 /* Link BGP instance to VRF. */
1536 static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
1537 {
1538         bgp->vrf_id = vrf->vrf_id;
1539         if (vrf->info != (void *)bgp) {
1540                 bgp_lock(bgp);
1541                 vrf->info = (void *)bgp;
1542         }
1543 }
1544
1545 /* Unlink BGP instance from VRF. */
1546 static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
1547 {
1548         if (vrf->info == (void *)bgp) {
1549                 vrf->info = NULL;
1550                 bgp_unlock(bgp);
1551         }
1552         bgp->vrf_id = VRF_UNKNOWN;
1553 }
1554
1555 extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
1556
1557 /* For benefit of rfapi */
1558 extern struct peer *peer_new(struct bgp *bgp);
1559
1560 #endif /* _QUAGGA_BGPD_H */