bgpd/bgp_attr.h

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