bgpd/bgp_attr.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* BGP attributes.
   3  * Copyright (C) 1996, 97, 98 Kunihiro Ishiguro
   4  */
   5
   6 #ifndef _QUAGGA_BGP_ATTR_H
   7 #define _QUAGGA_BGP_ATTR_H
   8
   9 #include "mpls.h"
  10 #include "bgp_attr_evpn.h"
  11 #include "bgpd/bgp_encap_types.h"
  12 #include "srte.h"
  13
  14 /* Simple bit mapping. */
  15 #define BITMAP_NBBY 8
  16
  17 #define SET_BITMAP(MAP, NUM)                                                   \
  18         SET_FLAG(MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
  19
  20 #define CHECK_BITMAP(MAP, NUM)                                                 \
  21         CHECK_FLAG(MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
  22
  23 #define BGP_MED_MAX UINT32_MAX
  24
  25 /* BGP Attribute type range. */
  26 #define BGP_ATTR_TYPE_RANGE     256
  27 #define BGP_ATTR_BITMAP_SIZE    (BGP_ATTR_TYPE_RANGE / BITMAP_NBBY)
  28
  29 /* BGP Attribute flags. */
  30 #define BGP_ATTR_FLAG_OPTIONAL  0x80    /* Attribute is optional. */
  31 #define BGP_ATTR_FLAG_TRANS     0x40    /* Attribute is transitive. */
  32 #define BGP_ATTR_FLAG_PARTIAL   0x20    /* Attribute is partial. */
  33 #define BGP_ATTR_FLAG_EXTLEN    0x10    /* Extended length flag. */
  34
  35 /* BGP attribute header must bigger than 2. */
  36 #define BGP_ATTR_MIN_LEN        3       /* Attribute flag, type length. */
  37 #define BGP_ATTR_DEFAULT_WEIGHT 32768
  38
  39 /* Valid lengths for mp_nexthop_len */
  40 #define BGP_ATTR_NHLEN_IPV4               IPV4_MAX_BYTELEN
  41 #define BGP_ATTR_NHLEN_VPNV4              8+IPV4_MAX_BYTELEN
  42 #define BGP_ATTR_NHLEN_IPV6_GLOBAL        IPV6_MAX_BYTELEN
  43 #define BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL (IPV6_MAX_BYTELEN * 2)
  44 #define BGP_ATTR_NHLEN_VPNV6_GLOBAL       8+IPV6_MAX_BYTELEN
  45 #define BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL ((8+IPV6_MAX_BYTELEN) * 2)
  46
  47 /* Prefix SID types */
  48 #define BGP_PREFIX_SID_LABEL_INDEX     1
  49 #define BGP_PREFIX_SID_IPV6            2
  50 #define BGP_PREFIX_SID_ORIGINATOR_SRGB 3
  51 #define BGP_PREFIX_SID_VPN_SID 4
  52 #define BGP_PREFIX_SID_SRV6_L3_SERVICE 5
  53 #define BGP_PREFIX_SID_SRV6_L2_SERVICE 6
  54
  55 #define BGP_PREFIX_SID_LABEL_INDEX_LENGTH      7
  56 #define BGP_PREFIX_SID_IPV6_LENGTH            19
  57 #define BGP_PREFIX_SID_ORIGINATOR_SRGB_LENGTH  6
  58 #define BGP_PREFIX_SID_VPN_SID_LENGTH         19
  59
  60 /* SRv6 Service Sub-TLV types */
  61 #define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_INFO 1
  62 #define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_INFO_LENGTH 21
  63
  64 /* SRv6 Service Data Sub-Sub-TLV types */
  65 #define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_STRUCTURE 1
  66 #define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_STRUCTURE_LENGTH 6
  67
  68 #define BGP_ATTR_NH_AFI(afi, attr) \
  69         ((afi != AFI_L2VPN) ? afi : \
  70         ((attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV4) ? AFI_IP : AFI_IP6))
  71
  72 /* PMSI tunnel types (RFC 6514) */
  73
  74 struct bgp_attr_encap_subtlv {
  75         struct bgp_attr_encap_subtlv *next; /* for chaining */
  76         /* Reference count of this attribute. */
  77         unsigned long refcnt;
  78         uint16_t type;
  79         uint16_t length;
  80         uint8_t value[0]; /* will be extended */
  81 };
  82
  83 #ifdef ENABLE_BGP_VNC
  84 /*
  85  * old rfp<->rfapi representation
  86  */
  87 struct bgp_tea_options {
  88         struct bgp_tea_options *next;
  89         uint8_t options_count;
  90         uint16_t options_length; /* each TLV may be 256 in length */
  91         uint8_t type;
  92         uint8_t length;
  93         void *value; /* pointer to data */
  94 };
  95
  96 #endif
  97
  98 enum pta_type {
  99         PMSI_TNLTYPE_NO_INFO = 0,
 100         PMSI_TNLTYPE_RSVP_TE_P2MP,
 101         PMSI_TNLTYPE_MLDP_P2MP,
 102         PMSI_TNLTYPE_PIM_SSM,
 103         PMSI_TNLTYPE_PIM_SM,
 104         PMSI_TNLTYPE_PIM_BIDIR,
 105         PMSI_TNLTYPE_INGR_REPL,
 106         PMSI_TNLTYPE_MLDP_MP2MP,
 107         PMSI_TNLTYPE_MAX = PMSI_TNLTYPE_MLDP_MP2MP
 108 };
 109
 110 /*
 111  * Prefix-SID type-4
 112  * SRv6-VPN-SID-TLV
 113  * draft-dawra-idr-srv6-vpn-04
 114  */
 115 struct bgp_attr_srv6_vpn {
 116         unsigned long refcnt;
 117         uint8_t sid_flags;
 118         struct in6_addr sid;
 119 };
 120
 121 /*
 122  * Prefix-SID type-5
 123  * SRv6-L3VPN-Service-TLV
 124  * draft-dawra-idr-srv6-vpn-05
 125  */
 126 struct bgp_attr_srv6_l3vpn {
 127         unsigned long refcnt;
 128         uint8_t sid_flags;
 129         uint16_t endpoint_behavior;
 130         struct in6_addr sid;
 131         uint8_t loc_block_len;
 132         uint8_t loc_node_len;
 133         uint8_t func_len;
 134         uint8_t arg_len;
 135         uint8_t transposition_len;
 136         uint8_t transposition_offset;
 137 };
 138
 139 /* BGP core attribute structure. */
 140 struct attr {
 141         /* AS Path structure */
 142         struct aspath *aspath;
 143
 144         /* Community structure */
 145         struct community *community;
 146
 147         /* Reference count of this attribute. */
 148         unsigned long refcnt;
 149
 150         /* Flag of attribute is set or not. */
 151         uint64_t flag;
 152
 153         /* Apart from in6_addr, the remaining static attributes */
 154         struct in_addr nexthop;
 155         uint32_t med;
 156         uint32_t local_pref;
 157         ifindex_t nh_ifindex;
 158
 159         /* Path origin attribute */
 160         uint8_t origin;
 161
 162         /* PMSI tunnel type (RFC 6514). */
 163         enum pta_type pmsi_tnl_type;
 164
 165         /* has the route-map changed any attribute?
 166            Used on the peer outbound side. */
 167         uint32_t rmap_change_flags;
 168
 169         /* Multi-Protocol Nexthop, AFI IPv6 */
 170         struct in6_addr mp_nexthop_global;
 171         struct in6_addr mp_nexthop_local;
 172
 173         /* ifIndex corresponding to mp_nexthop_local. */
 174         ifindex_t nh_lla_ifindex;
 175
 176         /* Extended Communities attribute. */
 177         struct ecommunity *ecommunity;
 178
 179         /* Extended Communities attribute. */
 180         struct ecommunity *ipv6_ecommunity;
 181
 182         /* Large Communities attribute. */
 183         struct lcommunity *lcommunity;
 184
 185         /* Route-Reflector Cluster attribute */
 186         struct cluster_list *cluster1;
 187
 188         /* Unknown transitive attribute. */
 189         struct transit *transit;
 190
 191         struct in_addr mp_nexthop_global_in;
 192
 193         /* Aggregator Router ID attribute */
 194         struct in_addr aggregator_addr;
 195
 196         /* Route Reflector Originator attribute */
 197         struct in_addr originator_id;
 198
 199         /* Local weight, not actually an attribute */
 200         uint32_t weight;
 201
 202         /* Aggregator ASN */
 203         as_t aggregator_as;
 204
 205         /* MP Nexthop length */
 206         uint8_t mp_nexthop_len;
 207
 208         /* MP Nexthop preference */
 209         uint8_t mp_nexthop_prefer_global;
 210
 211         /* Static MAC for EVPN */
 212         uint8_t sticky;
 213
 214         /* Flag for default gateway extended community in EVPN */
 215         uint8_t default_gw;
 216
 217         /* NA router flag (R-bit) support in EVPN */
 218         uint8_t router_flag;
 219
 220         /* ES info */
 221         uint8_t es_flags;
 222         /* Path is not "locally-active" on the advertising VTEP. This is
 223          * translated into an ARP-ND ECOM.
 224          */
 225 #define ATTR_ES_PROXY_ADVERT (1 << 0)
 226         /* Destination ES is present locally. This flag is set on local
 227          * paths and sync paths
 228          */
 229 #define ATTR_ES_IS_LOCAL (1 << 1)
 230         /* There are one or more non-best paths from ES peers. Note that
 231          * this flag is only set on the local MAC-IP paths in the VNI
 232          * route table (not set in the global routing table). And only
 233          * non-proxy advertisements from an ES peer can result in this
 234          * flag being set.
 235          */
 236 #define ATTR_ES_PEER_ACTIVE (1 << 2)
 237         /* There are one or more non-best proxy paths from ES peers */
 238 #define ATTR_ES_PEER_PROXY (1 << 3)
 239         /* An ES peer has router bit set - only applicable if
 240          * ATTR_ES_PEER_ACTIVE is set
 241          */
 242 #define ATTR_ES_PEER_ROUTER (1 << 4)
 243
 244         /* These two flags are only set on L3 routes installed in a
 245          * VRF as a result of EVPN MAC-IP route
 246          * XXX - while splitting up per-family attrs these need to be
 247          * classified as non-EVPN
 248          */
 249 #define ATTR_ES_L3_NHG_USE (1 << 5)
 250 #define ATTR_ES_L3_NHG_ACTIVE (1 << 6)
 251 #define ATTR_ES_L3_NHG (ATTR_ES_L3_NHG_USE | ATTR_ES_L3_NHG_ACTIVE)
 252
 253         /* route tag */
 254         route_tag_t tag;
 255
 256         /* Label index */
 257         uint32_t label_index;
 258
 259         /* MPLS label */
 260         mpls_label_t label;
 261
 262         /* SRv6 VPN SID */
 263         struct bgp_attr_srv6_vpn *srv6_vpn;
 264
 265         /* SRv6 L3VPN SID */
 266         struct bgp_attr_srv6_l3vpn *srv6_l3vpn;
 267
 268         uint16_t encap_tunneltype;                   /* grr */
 269         struct bgp_attr_encap_subtlv *encap_subtlvs; /* rfc5512 */
 270
 271 #ifdef ENABLE_BGP_VNC
 272         struct bgp_attr_encap_subtlv *vnc_subtlvs; /* VNC-specific */
 273 #endif
 274         /* EVPN */
 275         struct bgp_route_evpn evpn_overlay;
 276
 277         /* EVPN MAC Mobility sequence number, if any. */
 278         uint32_t mm_seqnum;
 279         /* highest MM sequence number rxed in a MAC-IP route from an
 280          * ES peer (this includes both proxy and non-proxy MAC-IP
 281          * advertisements from ES peers).
 282          * This is only applicable to local paths in the VNI routing
 283          * table and derived from other imported/non-best paths.
 284          */
 285         uint32_t mm_sync_seqnum;
 286
 287         /* EVPN local router-mac */
 288         struct ethaddr rmac;
 289
 290         /* Distance as applied by Route map */
 291         uint8_t distance;
 292
 293         /* rmap set table */
 294         uint32_t rmap_table_id;
 295
 296         /* Link bandwidth value, if any. */
 297         uint32_t link_bw;
 298
 299         /* EVPN ES */
 300         esi_t esi;
 301
 302         /* SR-TE Color */
 303         uint32_t srte_color;
 304
 305         /* EVPN DF preference and algorithm for DF election on local ESs */
 306         uint16_t df_pref;
 307         uint8_t df_alg;
 308
 309         /* Nexthop type */
 310         enum nexthop_types_t nh_type;
 311
 312         /* If NEXTHOP_TYPE_BLACKHOLE, then blackhole type */
 313         enum blackhole_type bh_type;
 314
 315         /* OTC value if set */
 316         uint32_t otc;
 317
 318         /* AIGP Metric */
 319         uint64_t aigp_metric;
 320 };
 321
 322 /* rmap_change_flags definition */
 323 #define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
 324 #define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
 325 #define BATTR_REFLECTED (1 << 2)
 326 #define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
 327 #define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
 328 #define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)
 329 #define BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED (1 << 6)
 330 #define BATTR_RMAP_LINK_BW_SET (1 << 7)
 331 #define BATTR_RMAP_L3VPN_ACCEPT_GRE (1 << 8)
 332 #define BATTR_RMAP_VPNV4_NHOP_CHANGED (1 << 9)
 333 #define BATTR_RMAP_VPNV6_GLOBAL_NHOP_CHANGED (1 << 10)
 334
 335 /* Router Reflector related structure. */
 336 struct cluster_list {
 337         unsigned long refcnt;
 338         int length;
 339         struct in_addr *list;
 340 };
 341
 342 /* Unknown transit attribute. */
 343 struct transit {
 344         unsigned long refcnt;
 345         int length;
 346         uint8_t *val;
 347 };
 348
 349 /* "(void) 0" will generate a compiler error.  this is a safety check to
 350  * ensure we're not using a value that exceeds the bit size of attr->flag. */
 351 #define ATTR_FLAG_BIT(X)                                                       \
 352         __builtin_choose_expr((X) >= 1 && (X) <= 64, 1ULL << ((X)-1), (void)0)
 353
 354 #define BGP_CLUSTER_LIST_LENGTH(attr)                                          \
 355         (((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST))                 \
 356                  ? bgp_attr_get_cluster((attr))->length                        \
 357                  : 0)
 358
 359 enum bgp_attr_parse_ret {
 360         BGP_ATTR_PARSE_PROCEED = 0,
 361         BGP_ATTR_PARSE_ERROR = -1,
 362         BGP_ATTR_PARSE_WITHDRAW = -2,
 363
 364         /* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR
 365          */
 366         BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
 367         BGP_ATTR_PARSE_EOR = -4,
 368 };
 369
 370 struct bpacket_attr_vec_arr;
 371
 372 /* Prototypes. */
 373 extern void bgp_attr_init(void);
 374 extern void bgp_attr_finish(void);
 375 extern enum bgp_attr_parse_ret
 376 bgp_attr_parse(struct peer *peer, struct attr *attr, bgp_size_t size,
 377                struct bgp_nlri *mp_update, struct bgp_nlri *mp_withdraw);
 378 extern struct attr *bgp_attr_intern(struct attr *attr);
 379 extern void bgp_attr_unintern_sub(struct attr *attr);
 380 extern void bgp_attr_unintern(struct attr **pattr);
 381 extern void bgp_attr_flush(struct attr *attr);
 382 extern struct attr *bgp_attr_default_set(struct attr *attr, struct bgp *bgp,
 383                                          uint8_t origin);
 384 extern struct attr *bgp_attr_aggregate_intern(
 385         struct bgp *bgp, uint8_t origin, struct aspath *aspath,
 386         struct community *community, struct ecommunity *ecommunity,
 387         struct lcommunity *lcommunity, struct bgp_aggregate *aggregate,
 388         uint8_t atomic_aggregate, const struct prefix *p);
 389 extern bgp_size_t bgp_packet_attribute(
 390         struct bgp *bgp, struct peer *peer, struct stream *s, struct attr *attr,
 391         struct bpacket_attr_vec_arr *vecarr, struct prefix *p, afi_t afi,
 392         safi_t safi, struct peer *from, struct prefix_rd *prd,
 393         mpls_label_t *label, uint32_t num_labels, bool addpath_capable,
 394         uint32_t addpath_tx_id, struct bgp_path_info *bpi);
 395 extern void bgp_dump_routes_attr(struct stream *s, struct bgp_path_info *bpi,
 396                                  const struct prefix *p);
 397 extern bool attrhash_cmp(const void *arg1, const void *arg2);
 398 extern unsigned int attrhash_key_make(const void *p);
 399 extern void attr_show_all(struct vty *vty);
 400 extern unsigned long int attr_count(void);
 401 extern unsigned long int attr_unknown_count(void);
 402 extern void bgp_path_attribute_discard_vty(struct vty *vty, struct peer *peer,
 403                                            const char *discard_attrs, bool set);
 404 extern void bgp_path_attribute_withdraw_vty(struct vty *vty, struct peer *peer,
 405                                             const char *withdraw_attrs,
 406                                             bool set);
 407 extern enum bgp_attr_parse_ret bgp_attr_ignore(struct peer *peer, uint8_t type);
 408
 409 /* Cluster list prototypes. */
 410 extern bool cluster_loop_check(struct cluster_list *cluster,
 411                                struct in_addr originator);
 412
 413 /* Below exported for unit-test purposes only */
 414 struct bgp_attr_parser_args {
 415         struct peer *peer;
 416         bgp_size_t length; /* attribute data length; */
 417         bgp_size_t total;  /* total length, inc header */
 418         struct attr *attr;
 419         uint8_t type;
 420         uint8_t flags;
 421         uint8_t *startp;
 422 };
 423 extern int bgp_mp_reach_parse(struct bgp_attr_parser_args *args,
 424                               struct bgp_nlri *mp_update);
 425 extern int bgp_mp_unreach_parse(struct bgp_attr_parser_args *args,
 426                                 struct bgp_nlri *mp_withdraw);
 427 extern enum bgp_attr_parse_ret
 428 bgp_attr_prefix_sid(struct bgp_attr_parser_args *args);
 429
 430 extern struct bgp_attr_encap_subtlv *
 431 encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);
 432
 433 extern void bgp_attr_flush_encap(struct attr *attr);
 434
 435 extern void bgp_attr_extcom_tunnel_type(struct attr *attr,
 436                                          bgp_encap_types *tunnel_type);
 437
 438 /**
 439  * Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
 440  * Typical call sequence is to call _start(), followed by multiple _prefix(),
 441  * one for each NLRI that needs to be encoded into the UPDATE message, and
 442  * finally the _end() function.
 443  */
 444 extern size_t bgp_packet_mpattr_start(struct stream *s, struct peer *peer,
 445                                       afi_t afi, safi_t safi,
 446                                       struct bpacket_attr_vec_arr *vecarr,
 447                                       struct attr *attr);
 448 extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
 449                                      const struct prefix *p,
 450                                      const struct prefix_rd *prd,
 451                                      mpls_label_t *label, uint32_t num_labels,
 452                                      bool addpath_capable,
 453                                      uint32_t addpath_tx_id, struct attr *);
 454 extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
 455                                             const struct prefix *p);
 456 extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);
 457
 458 extern size_t bgp_packet_mpunreach_start(struct stream *s, afi_t afi,
 459                                          safi_t safi);
 460 extern void bgp_packet_mpunreach_prefix(
 461         struct stream *s, const struct prefix *p, afi_t afi, safi_t safi,
 462         const struct prefix_rd *prd, mpls_label_t *label, uint32_t num_labels,
 463         bool addpath_capable, uint32_t addpath_tx_id, struct attr *attr);
 464 extern void bgp_packet_mpunreach_end(struct stream *s, size_t attrlen_pnt);
 465
 466 extern enum bgp_attr_parse_ret bgp_attr_nexthop_valid(struct peer *peer,
 467                                                       struct attr *attr);
 468
 469 static inline bool bgp_rmap_nhop_changed(uint32_t out_rmap_flags,
 470                                          uint32_t in_rmap_flags)
 471 {
 472         return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS) ||
 473                  CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED) ||
 474                  CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED) ||
 475                  CHECK_FLAG(out_rmap_flags, BATTR_RMAP_VPNV4_NHOP_CHANGED) ||
 476                  CHECK_FLAG(out_rmap_flags,
 477                             BATTR_RMAP_VPNV6_GLOBAL_NHOP_CHANGED) ||
 478                  CHECK_FLAG(out_rmap_flags,
 479                             BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED) ||
 480                  CHECK_FLAG(out_rmap_flags,
 481                             BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED) ||
 482                  CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED) ||
 483                  CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED))
 484                         ? true
 485                         : false);
 486 }
 487
 488 static inline uint32_t mac_mobility_seqnum(struct attr *attr)
 489 {
 490         return (attr) ? attr->mm_seqnum : 0;
 491 }
 492
 493 static inline enum pta_type bgp_attr_get_pmsi_tnl_type(struct attr *attr)
 494 {
 495         return attr->pmsi_tnl_type;
 496 }
 497
 498 static inline void bgp_attr_set_pmsi_tnl_type(struct attr *attr,
 499                                               enum pta_type pmsi_tnl_type)
 500 {
 501         attr->pmsi_tnl_type = pmsi_tnl_type;
 502 }
 503
 504 static inline struct ecommunity *
 505 bgp_attr_get_ecommunity(const struct attr *attr)
 506 {
 507         return attr->ecommunity;
 508 }
 509
 510 static inline void bgp_attr_set_ecommunity(struct attr *attr,
 511                                            struct ecommunity *ecomm)
 512 {
 513         attr->ecommunity = ecomm;
 514
 515         if (ecomm)
 516                 SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES));
 517         else
 518                 UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES));
 519 }
 520
 521 static inline struct lcommunity *
 522 bgp_attr_get_lcommunity(const struct attr *attr)
 523 {
 524         return attr->lcommunity;
 525 }
 526
 527 static inline void bgp_attr_set_lcommunity(struct attr *attr,
 528                                            struct lcommunity *lcomm)
 529 {
 530         attr->lcommunity = lcomm;
 531
 532         if (lcomm)
 533                 SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
 534         else
 535                 UNSET_FLAG(attr->flag,
 536                            ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
 537 }
 538
 539 static inline struct community *bgp_attr_get_community(const struct attr *attr)
 540 {
 541         return attr->community;
 542 }
 543
 544 static inline void bgp_attr_set_community(struct attr *attr,
 545                                           struct community *comm)
 546 {
 547         attr->community = comm;
 548
 549         if (comm)
 550                 SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES));
 551         else
 552                 UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES));
 553 }
 554
 555 static inline struct ecommunity *
 556 bgp_attr_get_ipv6_ecommunity(const struct attr *attr)
 557 {
 558         return attr->ipv6_ecommunity;
 559 }
 560
 561 static inline void bgp_attr_set_ipv6_ecommunity(struct attr *attr,
 562                                                 struct ecommunity *ipv6_ecomm)
 563 {
 564         attr->ipv6_ecommunity = ipv6_ecomm;
 565
 566         if (ipv6_ecomm)
 567                 SET_FLAG(attr->flag,
 568                          ATTR_FLAG_BIT(BGP_ATTR_IPV6_EXT_COMMUNITIES));
 569         else
 570                 UNSET_FLAG(attr->flag,
 571                            ATTR_FLAG_BIT(BGP_ATTR_IPV6_EXT_COMMUNITIES));
 572 }
 573
 574 static inline struct transit *bgp_attr_get_transit(const struct attr *attr)
 575 {
 576         return attr->transit;
 577 }
 578
 579 static inline void bgp_attr_set_transit(struct attr *attr,
 580                                         struct transit *transit)
 581 {
 582         attr->transit = transit;
 583 }
 584
 585 static inline uint64_t bgp_attr_get_aigp_metric(const struct attr *attr)
 586 {
 587         return attr->aigp_metric;
 588 }
 589
 590 static inline void bgp_attr_set_aigp_metric(struct attr *attr, uint64_t aigp)
 591 {
 592         attr->aigp_metric = aigp;
 593
 594         if (aigp)
 595                 attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_AIGP);
 596 }
 597
 598 static inline struct cluster_list *bgp_attr_get_cluster(const struct attr *attr)
 599 {
 600         return attr->cluster1;
 601 }
 602
 603 static inline void bgp_attr_set_cluster(struct attr *attr,
 604                                         struct cluster_list *cl)
 605 {
 606         attr->cluster1 = cl;
 607 }
 608
 609 static inline const struct bgp_route_evpn *
 610 bgp_attr_get_evpn_overlay(const struct attr *attr)
 611 {
 612         return &attr->evpn_overlay;
 613 }
 614
 615 static inline void bgp_attr_set_evpn_overlay(struct attr *attr,
 616                                              struct bgp_route_evpn *eo)
 617 {
 618         memcpy(&attr->evpn_overlay, eo, sizeof(struct bgp_route_evpn));
 619 }
 620
 621 static inline struct bgp_attr_encap_subtlv *
 622 bgp_attr_get_vnc_subtlvs(const struct attr *attr)
 623 {
 624 #ifdef ENABLE_BGP_VNC
 625         return attr->vnc_subtlvs;
 626 #else
 627         return NULL;
 628 #endif
 629 }
 630
 631 static inline void
 632 bgp_attr_set_vnc_subtlvs(struct attr *attr,
 633                          struct bgp_attr_encap_subtlv *vnc_subtlvs)
 634 {
 635 #ifdef ENABLE_BGP_VNC
 636         attr->vnc_subtlvs = vnc_subtlvs;
 637 #endif
 638 }
 639
 640 #endif /* _QUAGGA_BGP_ATTR_H */