bgpd/bgp_route.h

   1 /* BGP routing information base
   2  * Copyright (C) 1996, 97, 98, 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_BGP_ROUTE_H
  22 #define _QUAGGA_BGP_ROUTE_H
  23
  24 #include <stdbool.h>
  25
  26 #include "hook.h"
  27 #include "queue.h"
  28 #include "nexthop.h"
  29 #include "bgp_table.h"
  30 #include "bgp_addpath_types.h"
  31
  32 struct bgp_nexthop_cache;
  33 struct bgp_route_evpn;
  34
  35 enum bgp_show_type {
  36         bgp_show_type_normal,
  37         bgp_show_type_regexp,
  38         bgp_show_type_prefix_list,
  39         bgp_show_type_filter_list,
  40         bgp_show_type_route_map,
  41         bgp_show_type_neighbor,
  42         bgp_show_type_cidr_only,
  43         bgp_show_type_prefix_longer,
  44         bgp_show_type_community_all,
  45         bgp_show_type_community,
  46         bgp_show_type_community_exact,
  47         bgp_show_type_community_list,
  48         bgp_show_type_community_list_exact,
  49         bgp_show_type_lcommunity_all,
  50         bgp_show_type_lcommunity,
  51         bgp_show_type_lcommunity_exact,
  52         bgp_show_type_lcommunity_list,
  53         bgp_show_type_lcommunity_list_exact,
  54         bgp_show_type_flap_statistics,
  55         bgp_show_type_flap_neighbor,
  56         bgp_show_type_dampend_paths,
  57         bgp_show_type_damp_neighbor,
  58         bgp_show_type_detail,
  59 };
  60
  61 enum bgp_show_adj_route_type {
  62         bgp_show_adj_route_advertised,
  63         bgp_show_adj_route_received,
  64         bgp_show_adj_route_filtered,
  65         bgp_show_adj_route_bestpath,
  66 };
  67
  68
  69 #define BGP_SHOW_SCODE_HEADER                                                  \
  70         "Status codes:  s suppressed, d damped, "                              \
  71         "h history, * valid, > best, = multipath,\n"                           \
  72         "               i internal, r RIB-failure, S Stale, R Removed\n"
  73 #define BGP_SHOW_OCODE_HEADER "Origin codes:  i - IGP, e - EGP, ? - incomplete\n\n"
  74 #define BGP_SHOW_NCODE_HEADER "Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self\n"
  75 #define BGP_SHOW_HEADER "   Network          Next Hop            Metric LocPrf Weight Path\n"
  76 #define BGP_SHOW_HEADER_WIDE "   Network                                      Next Hop                                  Metric LocPrf Weight Path\n"
  77
  78 /* Maximum number of labels we can process or send with a prefix. We
  79  * really do only 1 for MPLS (BGP-LU) but we can do 2 for EVPN-VxLAN.
  80  */
  81 #define BGP_MAX_LABELS 2
  82
  83 /* Maximum number of sids we can process or send with a prefix. */
  84 #define BGP_MAX_SIDS 6
  85
  86 /* Error codes for handling NLRI */
  87 #define BGP_NLRI_PARSE_OK 0
  88 #define BGP_NLRI_PARSE_ERROR_PREFIX_OVERFLOW -1
  89 #define BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW -2
  90 #define BGP_NLRI_PARSE_ERROR_PREFIX_LENGTH -3
  91 #define BGP_NLRI_PARSE_ERROR_PACKET_LENGTH -4
  92 #define BGP_NLRI_PARSE_ERROR_LABEL_LENGTH -5
  93 #define BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE -6
  94 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE -7
  95 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE -8
  96 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE -9
  97 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE -10
  98 #define BGP_NLRI_PARSE_ERROR_FLOWSPEC_IPV6_NOT_SUPPORTED -11
  99 #define BGP_NLRI_PARSE_ERROR_FLOWSPEC_NLRI_SIZELIMIT -12
 100 #define BGP_NLRI_PARSE_ERROR_FLOWSPEC_BAD_FORMAT -13
 101 #define BGP_NLRI_PARSE_ERROR_ADDRESS_FAMILY -14
 102 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE -15
 103 #define BGP_NLRI_PARSE_ERROR -32
 104
 105 /* MAC-IP/type-2 path_info in the global routing table is linked to the
 106  * destination ES
 107  */
 108 struct bgp_path_es_info {
 109         /* back pointer to the route */
 110         struct bgp_path_info *pi;
 111         vni_t vni;
 112         /* destination ES */
 113         struct bgp_evpn_es *es;
 114         /* memory used for linking the path to the destination ES */
 115         struct listnode es_listnode;
 116 };
 117
 118 /* Ancillary information to struct bgp_path_info,
 119  * used for uncommonly used data (aggregation, MPLS, etc.)
 120  * and lazily allocated to save memory.
 121  */
 122 struct bgp_path_info_extra {
 123         /* Pointer to dampening structure.  */
 124         struct bgp_damp_info *damp_info;
 125
 126         /** List of aggregations that suppress this path. */
 127         struct list *aggr_suppressors;
 128
 129         /* Nexthop reachability check.  */
 130         uint32_t igpmetric;
 131
 132         /* MPLS label(s) - VNI(s) for EVPN-VxLAN  */
 133         mpls_label_t label[BGP_MAX_LABELS];
 134         uint32_t num_labels;
 135
 136         /* af specific flags */
 137         uint16_t af_flags;
 138 #define BGP_EVPN_MACIP_TYPE_SVI_IP (1 << 0)
 139
 140         /* SRv6 SID(s) for SRv6-VPN */
 141         struct in6_addr sid[BGP_MAX_SIDS];
 142         uint32_t num_sids;
 143
 144 #ifdef ENABLE_BGP_VNC
 145         union {
 146
 147                 struct {
 148                         void *rfapi_handle; /* export: NVE advertising this
 149                                                route */
 150                         struct list *local_nexthops; /* optional, for static
 151                                                         routes */
 152                 } export;
 153
 154                 struct {
 155                         struct thread *timer;
 156                         void *hme; /* encap monitor, if this is a VPN route */
 157                         struct prefix_rd
 158                                 rd; /* import: route's route-distinguisher */
 159                         uint8_t un_family; /* family of cached un address, 0 if
 160                                              unset */
 161                         union {
 162                                 struct in_addr addr4;
 163                                 struct in6_addr addr6;
 164                         } un; /* cached un address */
 165                         time_t create_time;
 166                         struct prefix aux_prefix; /* AFI_L2VPN: the IP addr,
 167                                                      if family set */
 168                 } import;
 169
 170         } vnc;
 171 #endif
 172
 173         /* For imported routes into a VNI (or VRF), this points to the parent.
 174          */
 175         void *parent;
 176
 177         /*
 178          * Some tunnelish parameters follow. Maybe consolidate into an
 179          * internal tunnel structure?
 180          */
 181
 182         /*
 183          * Original bgp instance for imported routes. Needed for:
 184          * 1. Find all routes from a specific vrf for deletion
 185          * 2. vrf context of original nexthop
 186          *
 187          * Store pointer to bgp instance rather than bgp->vrf_id because
 188          * bgp->vrf_id is not always valid (or may change?).
 189          *
 190          * Set to NULL if route is not imported from another bgp instance.
 191          */
 192         struct bgp *bgp_orig;
 193
 194         /*
 195          * Nexthop in context of original bgp instance. Needed
 196          * for label resolution of core mpls routes exported to a vrf.
 197          * Set nexthop_orig.family to 0 if not valid.
 198          */
 199         struct prefix nexthop_orig;
 200         /* presence of FS pbr firewall based entry */
 201         struct list *bgp_fs_pbr;
 202         /* presence of FS pbr iprule based entry */
 203         struct list *bgp_fs_iprule;
 204         /* Destination Ethernet Segment links for EVPN MH */
 205         struct bgp_path_es_info *es_info;
 206 };
 207
 208 struct bgp_path_info {
 209         /* For linked list. */
 210         struct bgp_path_info *next;
 211         struct bgp_path_info *prev;
 212
 213         /* For nexthop linked list */
 214         LIST_ENTRY(bgp_path_info) nh_thread;
 215
 216         /* Back pointer to the prefix node */
 217         struct bgp_dest *net;
 218
 219         /* Back pointer to the nexthop structure */
 220         struct bgp_nexthop_cache *nexthop;
 221
 222         /* Peer structure.  */
 223         struct peer *peer;
 224
 225         /* Attribute structure.  */
 226         struct attr *attr;
 227
 228         /* Extra information */
 229         struct bgp_path_info_extra *extra;
 230
 231
 232         /* Multipath information */
 233         struct bgp_path_info_mpath *mpath;
 234
 235         /* Uptime.  */
 236         time_t uptime;
 237
 238         /* reference count */
 239         int lock;
 240
 241         /* BGP information status.  */
 242         uint16_t flags;
 243 #define BGP_PATH_IGP_CHANGED (1 << 0)
 244 #define BGP_PATH_DAMPED (1 << 1)
 245 #define BGP_PATH_HISTORY (1 << 2)
 246 #define BGP_PATH_SELECTED (1 << 3)
 247 #define BGP_PATH_VALID (1 << 4)
 248 #define BGP_PATH_ATTR_CHANGED (1 << 5)
 249 #define BGP_PATH_DMED_CHECK (1 << 6)
 250 #define BGP_PATH_DMED_SELECTED (1 << 7)
 251 #define BGP_PATH_STALE (1 << 8)
 252 #define BGP_PATH_REMOVED (1 << 9)
 253 #define BGP_PATH_COUNTED (1 << 10)
 254 #define BGP_PATH_MULTIPATH (1 << 11)
 255 #define BGP_PATH_MULTIPATH_CHG (1 << 12)
 256 #define BGP_PATH_RIB_ATTR_CHG (1 << 13)
 257 #define BGP_PATH_ANNC_NH_SELF (1 << 14)
 258 #define BGP_PATH_LINK_BW_CHG (1 << 15)
 259
 260         /* BGP route type.  This can be static, RIP, OSPF, BGP etc.  */
 261         uint8_t type;
 262
 263         /* When above type is BGP.  This sub type specify BGP sub type
 264            information.  */
 265         uint8_t sub_type;
 266 #define BGP_ROUTE_NORMAL       0
 267 #define BGP_ROUTE_STATIC       1
 268 #define BGP_ROUTE_AGGREGATE    2
 269 #define BGP_ROUTE_REDISTRIBUTE 3
 270 #ifdef ENABLE_BGP_VNC
 271 # define BGP_ROUTE_RFP          4
 272 #endif
 273 #define BGP_ROUTE_IMPORTED     5        /* from another bgp instance/safi */
 274
 275         unsigned short instance;
 276
 277         /* Addpath identifiers */
 278         uint32_t addpath_rx_id;
 279         struct bgp_addpath_info_data tx_addpath;
 280 };
 281
 282 /* Structure used in BGP path selection */
 283 struct bgp_path_info_pair {
 284         struct bgp_path_info *old;
 285         struct bgp_path_info *new;
 286 };
 287
 288 /* BGP static route configuration. */
 289 struct bgp_static {
 290         /* Backdoor configuration.  */
 291         int backdoor;
 292
 293         /* Label index configuration; applies to LU prefixes. */
 294         uint32_t label_index;
 295 #define BGP_INVALID_LABEL_INDEX   0xFFFFFFFF
 296
 297         /* Import check status.  */
 298         uint8_t valid;
 299
 300         /* IGP metric. */
 301         uint32_t igpmetric;
 302
 303         /* IGP nexthop. */
 304         struct in_addr igpnexthop;
 305
 306         /* Atomic set reference count (ie cause of pathlimit) */
 307         uint32_t atomic;
 308
 309         /* BGP redistribute route-map.  */
 310         struct {
 311                 char *name;
 312                 struct route_map *map;
 313         } rmap;
 314
 315         /* Route Distinguisher */
 316         struct prefix_rd prd;
 317
 318         /* MPLS label.  */
 319         mpls_label_t label;
 320
 321         /* EVPN */
 322         esi_t *eth_s_id;
 323         struct ethaddr *router_mac;
 324         uint16_t encap_tunneltype;
 325         struct prefix gatewayIp;
 326 };
 327
 328 /* Aggreagete address:
 329  *
 330  *  advertise-map  Set condition to advertise attribute
 331  *  as-set         Generate AS set path information
 332  *  attribute-map  Set attributes of aggregate
 333  *  route-map      Set parameters of aggregate
 334  *  summary-only   Filter more specific routes from updates
 335  *  suppress-map   Conditionally filter more specific routes from updates
 336  *  <cr>
 337  */
 338 struct bgp_aggregate {
 339         /* Summary-only flag. */
 340         uint8_t summary_only;
 341
 342         /* AS set generation. */
 343         uint8_t as_set;
 344
 345         /* Route-map for aggregated route. */
 346         struct {
 347                 char *name;
 348                 struct route_map *map;
 349         } rmap;
 350
 351         /* Suppress-count. */
 352         unsigned long count;
 353
 354         /* Count of routes of origin type incomplete under this aggregate. */
 355         unsigned long incomplete_origin_count;
 356
 357         /* Count of routes of origin type egp under this aggregate. */
 358         unsigned long egp_origin_count;
 359
 360         /* Optional modify flag to override ORIGIN */
 361         uint8_t origin;
 362
 363         /* Hash containing the communities of all the
 364          * routes under this aggregate.
 365          */
 366         struct hash *community_hash;
 367
 368         /* Hash containing the extended communities of all the
 369          * routes under this aggregate.
 370          */
 371         struct hash *ecommunity_hash;
 372
 373         /* Hash containing the large communities of all the
 374          * routes under this aggregate.
 375          */
 376         struct hash *lcommunity_hash;
 377
 378         /* Hash containing the AS-Path of all the
 379          * routes under this aggregate.
 380          */
 381         struct hash *aspath_hash;
 382
 383         /* Aggregate route's community. */
 384         struct community *community;
 385
 386         /* Aggregate route's extended community. */
 387         struct ecommunity *ecommunity;
 388
 389         /* Aggregate route's large community. */
 390         struct lcommunity *lcommunity;
 391
 392         /* Aggregate route's as-path. */
 393         struct aspath *aspath;
 394
 395         /* SAFI configuration. */
 396         safi_t safi;
 397
 398         /** Match only equal MED. */
 399         bool match_med;
 400         /* MED matching state. */
 401         /** Did we get the first MED value? */
 402         bool med_initialized;
 403         /** Are there MED mismatches? */
 404         bool med_mismatched;
 405         /** MED value found in current group. */
 406         uint32_t med_matched_value;
 407
 408         /**
 409          * Test if aggregated address MED of all route match, otherwise
 410          * returns `false`. This macro will also return `true` if MED
 411          * matching is disabled.
 412          */
 413 #define AGGREGATE_MED_VALID(aggregate)                                         \
 414         (((aggregate)->match_med && !(aggregate)->med_mismatched)              \
 415          || !(aggregate)->match_med)
 416
 417         /** Suppress map route map name (`NULL` when disabled). */
 418         char *suppress_map_name;
 419         /** Suppress map route map pointer. */
 420         struct route_map *suppress_map;
 421 };
 422
 423 #define BGP_NEXTHOP_AFI_FROM_NHLEN(nhlen)                                      \
 424         ((nhlen) < IPV4_MAX_BYTELEN                                            \
 425                  ? 0                                                           \
 426                  : ((nhlen) < IPV6_MAX_BYTELEN ? AFI_IP : AFI_IP6))
 427
 428 #define BGP_ATTR_NEXTHOP_AFI_IP6(attr)                                         \
 429         (!CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP))             \
 430          && ((attr)->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL              \
 431              || (attr)->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL    \
 432              || (attr)->mp_nexthop_len == BGP_ATTR_NHLEN_VPNV6_GLOBAL          \
 433              || (attr)->mp_nexthop_len == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL))
 434 #define BGP_PATH_COUNTABLE(BI)                                                 \
 435         (!CHECK_FLAG((BI)->flags, BGP_PATH_HISTORY)                            \
 436          && !CHECK_FLAG((BI)->flags, BGP_PATH_REMOVED))
 437
 438 /* Flags which indicate a route is unuseable in some form */
 439 #define BGP_PATH_UNUSEABLE                                                     \
 440         (BGP_PATH_HISTORY | BGP_PATH_DAMPED | BGP_PATH_REMOVED)
 441 /* Macro to check BGP information is alive or not.  Sadly,
 442  * not equivalent to just checking previous, because of the
 443  * sense of the additional VALID flag.
 444  */
 445 #define BGP_PATH_HOLDDOWN(BI)                                                  \
 446         (!CHECK_FLAG((BI)->flags, BGP_PATH_VALID)                              \
 447          || CHECK_FLAG((BI)->flags, BGP_PATH_UNUSEABLE))
 448
 449 #define DISTRIBUTE_IN_NAME(F)   ((F)->dlist[FILTER_IN].name)
 450 #define DISTRIBUTE_IN(F)        ((F)->dlist[FILTER_IN].alist)
 451 #define DISTRIBUTE_OUT_NAME(F)  ((F)->dlist[FILTER_OUT].name)
 452 #define DISTRIBUTE_OUT(F)       ((F)->dlist[FILTER_OUT].alist)
 453
 454 #define PREFIX_LIST_IN_NAME(F)  ((F)->plist[FILTER_IN].name)
 455 #define PREFIX_LIST_IN(F)       ((F)->plist[FILTER_IN].plist)
 456 #define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
 457 #define PREFIX_LIST_OUT(F)      ((F)->plist[FILTER_OUT].plist)
 458
 459 #define FILTER_LIST_IN_NAME(F)  ((F)->aslist[FILTER_IN].name)
 460 #define FILTER_LIST_IN(F)       ((F)->aslist[FILTER_IN].aslist)
 461 #define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
 462 #define FILTER_LIST_OUT(F)      ((F)->aslist[FILTER_OUT].aslist)
 463
 464 #define ROUTE_MAP_IN_NAME(F)    ((F)->map[RMAP_IN].name)
 465 #define ROUTE_MAP_IN(F)         ((F)->map[RMAP_IN].map)
 466 #define ROUTE_MAP_OUT_NAME(F)   ((F)->map[RMAP_OUT].name)
 467 #define ROUTE_MAP_OUT(F)        ((F)->map[RMAP_OUT].map)
 468
 469 #define UNSUPPRESS_MAP_NAME(F)  ((F)->usmap.name)
 470 #define UNSUPPRESS_MAP(F)       ((F)->usmap.map)
 471
 472 #define ADVERTISE_MAP_NAME(F)   ((F)->advmap.aname)
 473 #define ADVERTISE_MAP(F)        ((F)->advmap.amap)
 474
 475 #define ADVERTISE_CONDITION(F)  ((F)->advmap.condition)
 476
 477 #define CONDITION_MAP_NAME(F)   ((F)->advmap.cname)
 478 #define CONDITION_MAP(F)        ((F)->advmap.cmap)
 479
 480 /* path PREFIX (addpath rxid NUMBER) */
 481 #define PATH_ADDPATH_STR_BUFFER PREFIX2STR_BUFFER + 32
 482
 483 enum bgp_path_type {
 484         BGP_PATH_SHOW_ALL,
 485         BGP_PATH_SHOW_BESTPATH,
 486         BGP_PATH_SHOW_MULTIPATH
 487 };
 488
 489 static inline void bgp_bump_version(struct bgp_dest *dest)
 490 {
 491         dest->version = bgp_table_next_version(bgp_dest_table(dest));
 492 }
 493
 494 static inline int bgp_fibupd_safi(safi_t safi)
 495 {
 496         if (safi == SAFI_UNICAST || safi == SAFI_MULTICAST
 497             || safi == SAFI_LABELED_UNICAST
 498             || safi == SAFI_FLOWSPEC)
 499                 return 1;
 500         return 0;
 501 }
 502
 503 /* Flag if the route path's family matches params. */
 504 static inline bool is_pi_family_matching(struct bgp_path_info *pi,
 505                                          afi_t afi, safi_t safi)
 506 {
 507         struct bgp_table *table;
 508         struct bgp_dest *dest;
 509
 510         dest = pi->net;
 511         if (!dest)
 512                 return false;
 513         table = bgp_dest_table(dest);
 514         if (table &&
 515             table->afi == afi &&
 516             table->safi == safi)
 517                 return true;
 518         return false;
 519 }
 520
 521 static inline void prep_for_rmap_apply(struct bgp_path_info *dst_pi,
 522                                        struct bgp_path_info_extra *dst_pie,
 523                                        struct bgp_dest *dest,
 524                                        struct bgp_path_info *src_pi,
 525                                        struct peer *peer, struct attr *attr)
 526 {
 527         memset(dst_pi, 0, sizeof(struct bgp_path_info));
 528         dst_pi->peer = peer;
 529         dst_pi->attr = attr;
 530         dst_pi->net = dest;
 531         dst_pi->flags = src_pi->flags;
 532         dst_pi->type = src_pi->type;
 533         dst_pi->sub_type = src_pi->sub_type;
 534         dst_pi->mpath = src_pi->mpath;
 535         if (src_pi->extra) {
 536                 memcpy(dst_pie, src_pi->extra,
 537                        sizeof(struct bgp_path_info_extra));
 538                 dst_pi->extra = dst_pie;
 539         }
 540 }
 541
 542 static inline bool bgp_check_advertise(struct bgp *bgp, struct bgp_dest *dest)
 543 {
 544         return (!(BGP_SUPPRESS_FIB_ENABLED(bgp) &&
 545                   CHECK_FLAG(dest->flags, BGP_NODE_FIB_INSTALL_PENDING) &&
 546                  (!bgp_option_check(BGP_OPT_NO_FIB))));
 547 }
 548
 549 /* called before bgp_process() */
 550 DECLARE_HOOK(bgp_process,
 551              (struct bgp * bgp, afi_t afi, safi_t safi, struct bgp_dest *bn,
 552               struct peer *peer, bool withdraw),
 553              (bgp, afi, safi, bn, peer, withdraw))
 554
 555 /* BGP show options */
 556 #define BGP_SHOW_OPT_JSON (1 << 0)
 557 #define BGP_SHOW_OPT_WIDE (1 << 1)
 558 #define BGP_SHOW_OPT_AFI_ALL (1 << 2)
 559 #define BGP_SHOW_OPT_AFI_IP (1 << 3)
 560 #define BGP_SHOW_OPT_AFI_IP6 (1 << 4)
 561
 562 /* Prototypes. */
 563 extern void bgp_rib_remove(struct bgp_dest *dest, struct bgp_path_info *pi,
 564                            struct peer *peer, afi_t afi, safi_t safi);
 565 extern void bgp_process_queue_init(struct bgp *bgp);
 566 extern void bgp_route_init(void);
 567 extern void bgp_route_finish(void);
 568 extern void bgp_cleanup_routes(struct bgp *);
 569 extern void bgp_announce_route(struct peer *, afi_t, safi_t);
 570 extern void bgp_stop_announce_route_timer(struct peer_af *paf);
 571 extern void bgp_announce_route_all(struct peer *);
 572 extern void bgp_default_originate(struct peer *, afi_t, safi_t, int);
 573 extern void bgp_soft_reconfig_in(struct peer *, afi_t, safi_t);
 574 extern void bgp_clear_route(struct peer *, afi_t, safi_t);
 575 extern void bgp_clear_route_all(struct peer *);
 576 extern void bgp_clear_adj_in(struct peer *, afi_t, safi_t);
 577 extern void bgp_clear_stale_route(struct peer *, afi_t, safi_t);
 578 extern bool bgp_outbound_policy_exists(struct peer *, struct bgp_filter *);
 579 extern bool bgp_inbound_policy_exists(struct peer *, struct bgp_filter *);
 580
 581 extern struct bgp_dest *bgp_afi_node_get(struct bgp_table *table, afi_t afi,
 582                                          safi_t safi, const struct prefix *p,
 583                                          struct prefix_rd *prd);
 584 extern struct bgp_path_info *bgp_path_info_lock(struct bgp_path_info *path);
 585 extern struct bgp_path_info *bgp_path_info_unlock(struct bgp_path_info *path);
 586 extern void bgp_path_info_add(struct bgp_dest *dest, struct bgp_path_info *pi);
 587 extern void bgp_path_info_extra_free(struct bgp_path_info_extra **extra);
 588 extern void bgp_path_info_reap(struct bgp_dest *dest, struct bgp_path_info *pi);
 589 extern void bgp_path_info_delete(struct bgp_dest *dest,
 590                                  struct bgp_path_info *pi);
 591 extern struct bgp_path_info_extra *
 592 bgp_path_info_extra_get(struct bgp_path_info *path);
 593 extern void bgp_path_info_set_flag(struct bgp_dest *dest,
 594                                    struct bgp_path_info *path, uint32_t flag);
 595 extern void bgp_path_info_unset_flag(struct bgp_dest *dest,
 596                                      struct bgp_path_info *path, uint32_t flag);
 597 extern void bgp_path_info_path_with_addpath_rx_str(struct bgp_path_info *pi,
 598                                                    char *buf);
 599
 600 extern int bgp_nlri_parse_ip(struct peer *, struct attr *, struct bgp_nlri *);
 601
 602 extern bool bgp_maximum_prefix_overflow(struct peer *, afi_t, safi_t, int);
 603
 604 extern void bgp_redistribute_add(struct bgp *bgp, struct prefix *p,
 605                                  const union g_addr *nexthop, ifindex_t ifindex,
 606                                  enum nexthop_types_t nhtype, uint32_t metric,
 607                                  uint8_t type, unsigned short instance,
 608                                  route_tag_t tag);
 609 extern void bgp_redistribute_delete(struct bgp *, struct prefix *, uint8_t,
 610                                     unsigned short);
 611 extern void bgp_redistribute_withdraw(struct bgp *, afi_t, int, unsigned short);
 612
 613 extern void bgp_static_add(struct bgp *);
 614 extern void bgp_static_delete(struct bgp *);
 615 extern void bgp_static_redo_import_check(struct bgp *);
 616 extern void bgp_purge_static_redist_routes(struct bgp *bgp);
 617 extern void bgp_static_update(struct bgp *bgp, const struct prefix *p,
 618                               struct bgp_static *s, afi_t afi, safi_t safi);
 619 extern void bgp_static_withdraw(struct bgp *bgp, const struct prefix *p,
 620                                 afi_t afi, safi_t safi);
 621
 622 extern int bgp_static_set_safi(afi_t afi, safi_t safi, struct vty *vty,
 623                                const char *, const char *, const char *,
 624                                const char *, int, const char *, const char *,
 625                                const char *, const char *);
 626
 627 extern int bgp_static_unset_safi(afi_t afi, safi_t safi, struct vty *,
 628                                  const char *, const char *, const char *, int,
 629                                  const char *, const char *, const char *);
 630
 631 /* this is primarily for MPLS-VPN */
 632 extern int bgp_update(struct peer *peer, const struct prefix *p,
 633                       uint32_t addpath_id, struct attr *attr,
 634                       afi_t afi, safi_t safi, int type, int sub_type,
 635                       struct prefix_rd *prd, mpls_label_t *label,
 636                       uint32_t num_labels, int soft_reconfig,
 637                       struct bgp_route_evpn *evpn);
 638 extern int bgp_withdraw(struct peer *peer, const struct prefix *p,
 639                         uint32_t addpath_id, struct attr *attr, afi_t afi,
 640                         safi_t safi, int type, int sub_type,
 641                         struct prefix_rd *prd, mpls_label_t *label,
 642                         uint32_t num_labels, struct bgp_route_evpn *evpn);
 643
 644 /* for bgp_nexthop and bgp_damp */
 645 extern void bgp_process(struct bgp *, struct bgp_dest *, afi_t, safi_t);
 646
 647 /*
 648  * Add an end-of-initial-update marker to the process queue. This is just a
 649  * queue element with NULL bgp node.
 650  */
 651 extern void bgp_add_eoiu_mark(struct bgp *);
 652 extern void bgp_config_write_table_map(struct vty *, struct bgp *, afi_t,
 653                                        safi_t);
 654 extern void bgp_config_write_network(struct vty *, struct bgp *, afi_t, safi_t);
 655 extern void bgp_config_write_distance(struct vty *, struct bgp *, afi_t,
 656                                       safi_t);
 657
 658 extern void bgp_aggregate_delete(struct bgp *bgp, const struct prefix *p,
 659                                  afi_t afi, safi_t safi,
 660                                  struct bgp_aggregate *aggregate);
 661 extern void bgp_aggregate_route(struct bgp *bgp, const struct prefix *p,
 662                                 afi_t afi, safi_t safi,
 663                                 struct bgp_aggregate *aggregate);
 664 extern void bgp_aggregate_increment(struct bgp *bgp, const struct prefix *p,
 665                                     struct bgp_path_info *path, afi_t afi,
 666                                     safi_t safi);
 667 extern void bgp_aggregate_decrement(struct bgp *bgp, const struct prefix *p,
 668                                     struct bgp_path_info *path, afi_t afi,
 669                                     safi_t safi);
 670
 671 extern uint8_t bgp_distance_apply(const struct prefix *p,
 672                                   struct bgp_path_info *path, afi_t afi,
 673                                   safi_t safi, struct bgp *bgp);
 674
 675 extern afi_t bgp_node_afi(struct vty *);
 676 extern safi_t bgp_node_safi(struct vty *);
 677
 678 extern struct bgp_path_info *info_make(int type, int sub_type,
 679                                        unsigned short instance,
 680                                        struct peer *peer, struct attr *attr,
 681                                        struct bgp_dest *dest);
 682
 683 extern void route_vty_out(struct vty *vty, const struct prefix *p,
 684                           struct bgp_path_info *path, int display, safi_t safi,
 685                           json_object *json_paths, bool wide);
 686 extern void route_vty_out_tag(struct vty *vty, const struct prefix *p,
 687                               struct bgp_path_info *path, int display,
 688                               safi_t safi, json_object *json);
 689 extern void route_vty_out_tmp(struct vty *vty, const struct prefix *p,
 690                               struct attr *attr, safi_t safi, bool use_json,
 691                               json_object *json_ar, bool wide);
 692 extern void route_vty_out_overlay(struct vty *vty, const struct prefix *p,
 693                                   struct bgp_path_info *path, int display,
 694                                   json_object *json);
 695
 696 extern void bgp_notify_conditional_adv_scanner(struct update_subgroup *subgrp);
 697
 698 extern void subgroup_process_announce_selected(struct update_subgroup *subgrp,
 699                                                struct bgp_path_info *selected,
 700                                                struct bgp_dest *dest,
 701                                                uint32_t addpath_tx_id);
 702
 703 extern bool subgroup_announce_check(struct bgp_dest *dest,
 704                                     struct bgp_path_info *pi,
 705                                     struct update_subgroup *subgrp,
 706                                     const struct prefix *p, struct attr *attr,
 707                                     bool skip_rmap_check);
 708
 709 extern void bgp_peer_clear_node_queue_drain_immediate(struct peer *peer);
 710 extern void bgp_process_queues_drain_immediate(void);
 711
 712 /* for encap/vpn */
 713 extern struct bgp_dest *bgp_afi_node_lookup(struct bgp_table *table, afi_t afi,
 714                                             safi_t safi, const struct prefix *p,
 715                                             struct prefix_rd *prd);
 716 extern void bgp_path_info_restore(struct bgp_dest *dest,
 717                                   struct bgp_path_info *path);
 718
 719 extern int bgp_path_info_cmp_compatible(struct bgp *bgp,
 720                                         struct bgp_path_info *new,
 721                                         struct bgp_path_info *exist,
 722                                         char *pfx_buf, afi_t afi, safi_t safi,
 723                                         enum bgp_path_selection_reason *reason);
 724 extern void bgp_attr_add_gshut_community(struct attr *attr);
 725
 726 extern void bgp_best_selection(struct bgp *bgp, struct bgp_dest *dest,
 727                                struct bgp_maxpaths_cfg *mpath_cfg,
 728                                struct bgp_path_info_pair *result, afi_t afi,
 729                                safi_t safi);
 730 extern void bgp_zebra_clear_route_change_flags(struct bgp_dest *dest);
 731 extern bool bgp_zebra_has_route_changed(struct bgp_path_info *selected);
 732
 733 extern void route_vty_out_detail_header(struct vty *vty, struct bgp *bgp,
 734                                         struct bgp_dest *dest,
 735                                         struct prefix_rd *prd, afi_t afi,
 736                                         safi_t safi, json_object *json);
 737 extern void route_vty_out_detail(struct vty *vty, struct bgp *bgp,
 738                                  struct bgp_dest *bn,
 739                                  struct bgp_path_info *path, afi_t afi,
 740                                  safi_t safi, json_object *json_paths);
 741 extern int bgp_show_table_rd(struct vty *vty, struct bgp *bgp, safi_t safi,
 742                              struct bgp_table *table, struct prefix_rd *prd,
 743                              enum bgp_show_type type, void *output_arg,
 744                              bool use_json);
 745 extern int bgp_best_path_select_defer(struct bgp *bgp, afi_t afi, safi_t safi);
 746 extern bool bgp_update_martian_nexthop(struct bgp *bgp, afi_t afi, safi_t safi,
 747                                        uint8_t type, uint8_t stype,
 748                                        struct attr *attr, struct bgp_dest *dest);
 749 extern int bgp_evpn_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new,
 750                              struct bgp_path_info *exist, int *paths_eq);
 751 extern void bgp_aggregate_toggle_suppressed(struct bgp_aggregate *aggregate,
 752                                             struct bgp *bgp,
 753                                             const struct prefix *p, afi_t afi,
 754                                             safi_t safi, bool suppress);
 755 extern int bgp_static_set(struct bgp *bgp, const char *negate,
 756                           struct prefix *pfx, afi_t afi, safi_t safi,
 757                           const char *rmap, int backdoor, uint32_t label_index,
 758                           char *errmsg, size_t errmsg_len);
 759
 760 extern int bgp_aggregate_set(struct bgp *bgp, struct prefix *prefix, afi_t afi,
 761                              safi_t safi, const char *rmap,
 762                              uint8_t summary_only, uint8_t as_set,
 763                              uint8_t origin, bool match_med,
 764                              const char *suppress_map, char *errmsg,
 765                              size_t errmsg_len);
 766
 767 extern int bgp_aggregate_unset(struct bgp *bgp, struct prefix *prefix,
 768                                afi_t afi, safi_t safi, char *errmsg,
 769                                size_t errmsg_len);
 770
 771 extern void bgp_announce_routes_distance_update(struct bgp *bgp,
 772                                                 afi_t update_afi,
 773                                                 safi_t update_safi);
 774
 775 extern int bgp_distance_set(uint8_t distance, const char *ip_str,
 776                             const char *access_list_str, afi_t afi, safi_t safi,
 777                             char *errmsg, size_t errmsg_len);
 778
 779 extern int bgp_distance_unset(uint8_t distance, const char *ip_str,
 780                               const char *access_list_str, afi_t afi,
 781                               safi_t safi, char *errmsg, size_t errmsg_len);
 782 extern void subgroup_announce_reset_nhop(uint8_t family, struct attr *attr);
 783 #endif /* _QUAGGA_BGP_ROUTE_H */