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 /* SRv6 SID Structure default values */
  84 #define BGP_PREFIX_SID_SRV6_LOCATOR_BLOCK_LENGTH 40
  85 #define BGP_PREFIX_SID_SRV6_LOCATOR_NODE_LENGTH 24
  86 #define BGP_PREFIX_SID_SRV6_FUNCTION_LENGTH 16
  87 #define BGP_PREFIX_SID_SRV6_ARGUMENT_LENGTH 0
  88 #define BGP_PREFIX_SID_SRV6_TRANSPOSITION_LENGTH 16
  89 #define BGP_PREFIX_SID_SRV6_TRANSPOSITION_OFFSET 64
  90
  91 #define BGP_ATTR_NH_AFI(afi, attr) \
  92         ((afi != AFI_L2VPN) ? afi : \
  93         ((attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV4) ? AFI_IP : AFI_IP6))
  94
  95 /* PMSI tunnel types (RFC 6514) */
  96
  97 struct bgp_attr_encap_subtlv {
  98         struct bgp_attr_encap_subtlv *next; /* for chaining */
  99         /* Reference count of this attribute. */
 100         unsigned long refcnt;
 101         uint16_t type;
 102         uint16_t length;
 103         uint8_t value[0]; /* will be extended */
 104 };
 105
 106 #ifdef ENABLE_BGP_VNC
 107 /*
 108  * old rfp<->rfapi representation
 109  */
 110 struct bgp_tea_options {
 111         struct bgp_tea_options *next;
 112         uint8_t options_count;
 113         uint16_t options_length; /* each TLV may be 256 in length */
 114         uint8_t type;
 115         uint8_t length;
 116         void *value; /* pointer to data */
 117 };
 118
 119 #endif
 120
 121 enum pta_type {
 122         PMSI_TNLTYPE_NO_INFO = 0,
 123         PMSI_TNLTYPE_RSVP_TE_P2MP,
 124         PMSI_TNLTYPE_MLDP_P2MP,
 125         PMSI_TNLTYPE_PIM_SSM,
 126         PMSI_TNLTYPE_PIM_SM,
 127         PMSI_TNLTYPE_PIM_BIDIR,
 128         PMSI_TNLTYPE_INGR_REPL,
 129         PMSI_TNLTYPE_MLDP_MP2MP,
 130         PMSI_TNLTYPE_MAX = PMSI_TNLTYPE_MLDP_MP2MP
 131 };
 132
 133 /*
 134  * Prefix-SID type-4
 135  * SRv6-VPN-SID-TLV
 136  * draft-dawra-idr-srv6-vpn-04
 137  */
 138 struct bgp_attr_srv6_vpn {
 139         unsigned long refcnt;
 140         uint8_t sid_flags;
 141         struct in6_addr sid;
 142 };
 143
 144 /*
 145  * Prefix-SID type-5
 146  * SRv6-L3VPN-Service-TLV
 147  * draft-dawra-idr-srv6-vpn-05
 148  */
 149 struct bgp_attr_srv6_l3vpn {
 150         unsigned long refcnt;
 151         uint8_t sid_flags;
 152         uint16_t endpoint_behavior;
 153         struct in6_addr sid;
 154         uint8_t loc_block_len;
 155         uint8_t loc_node_len;
 156         uint8_t func_len;
 157         uint8_t arg_len;
 158         uint8_t transposition_len;
 159         uint8_t transposition_offset;
 160 };
 161
 162 /* BGP core attribute structure. */
 163 struct attr {
 164         /* AS Path structure */
 165         struct aspath *aspath;
 166
 167         /* Community structure */
 168         struct community *community;
 169
 170         /* Reference count of this attribute. */
 171         unsigned long refcnt;
 172
 173         /* Flag of attribute is set or not. */
 174         uint64_t flag;
 175
 176         /* Apart from in6_addr, the remaining static attributes */
 177         struct in_addr nexthop;
 178         uint32_t med;
 179         uint32_t local_pref;
 180         ifindex_t nh_ifindex;
 181
 182         /* Path origin attribute */
 183         uint8_t origin;
 184
 185         /* PMSI tunnel type (RFC 6514). */
 186         enum pta_type pmsi_tnl_type;
 187
 188         /* has the route-map changed any attribute?
 189            Used on the peer outbound side. */
 190         uint32_t rmap_change_flags;
 191
 192         /* Multi-Protocol Nexthop, AFI IPv6 */
 193         struct in6_addr mp_nexthop_global;
 194         struct in6_addr mp_nexthop_local;
 195
 196         /* ifIndex corresponding to mp_nexthop_local. */
 197         ifindex_t nh_lla_ifindex;
 198
 199         /* Extended Communities attribute. */
 200         struct ecommunity *ecommunity;
 201
 202         /* Extended Communities attribute. */
 203         struct ecommunity *ipv6_ecommunity;
 204
 205         /* Large Communities attribute. */
 206         struct lcommunity *lcommunity;
 207
 208         /* Route-Reflector Cluster attribute */
 209         struct cluster_list *cluster1;
 210
 211         /* Unknown transitive attribute. */
 212         struct transit *transit;
 213
 214         struct in_addr mp_nexthop_global_in;
 215
 216         /* Aggregator Router ID attribute */
 217         struct in_addr aggregator_addr;
 218
 219         /* Route Reflector Originator attribute */
 220         struct in_addr originator_id;
 221
 222         /* Local weight, not actually an attribute */
 223         uint32_t weight;
 224
 225         /* Aggregator ASN */
 226         as_t aggregator_as;
 227
 228         /* MP Nexthop length */
 229         uint8_t mp_nexthop_len;
 230
 231         /* MP Nexthop preference */
 232         uint8_t mp_nexthop_prefer_global;
 233
 234         /* Static MAC for EVPN */
 235         uint8_t sticky;
 236
 237         /* Flag for default gateway extended community in EVPN */
 238         uint8_t default_gw;
 239
 240         /* NA router flag (R-bit) support in EVPN */
 241         uint8_t router_flag;
 242
 243         /* ES info */
 244         uint8_t es_flags;
 245         /* Path is not "locally-active" on the advertising VTEP. This is
 246          * translated into an ARP-ND ECOM.
 247          */
 248 #define ATTR_ES_PROXY_ADVERT (1 << 0)
 249         /* Destination ES is present locally. This flag is set on local
 250          * paths and sync paths
 251          */
 252 #define ATTR_ES_IS_LOCAL (1 << 1)
 253         /* There are one or more non-best paths from ES peers. Note that
 254          * this flag is only set on the local MAC-IP paths in the VNI
 255          * route table (not set in the global routing table). And only
 256          * non-proxy advertisements from an ES peer can result in this
 257          * flag being set.
 258          */
 259 #define ATTR_ES_PEER_ACTIVE (1 << 2)
 260         /* There are one or more non-best proxy paths from ES peers */
 261 #define ATTR_ES_PEER_PROXY (1 << 3)
 262         /* An ES peer has router bit set - only applicable if
 263          * ATTR_ES_PEER_ACTIVE is set
 264          */
 265 #define ATTR_ES_PEER_ROUTER (1 << 4)
 266
 267         /* These two flags are only set on L3 routes installed in a
 268          * VRF as a result of EVPN MAC-IP route
 269          * XXX - while splitting up per-family attrs these need to be
 270          * classified as non-EVPN
 271          */
 272 #define ATTR_ES_L3_NHG_USE (1 << 5)
 273 #define ATTR_ES_L3_NHG_ACTIVE (1 << 6)
 274 #define ATTR_ES_L3_NHG (ATTR_ES_L3_NHG_USE | ATTR_ES_L3_NHG_ACTIVE)
 275
 276         /* route tag */
 277         route_tag_t tag;
 278
 279         /* Label index */
 280         uint32_t label_index;
 281
 282         /* MPLS label */
 283         mpls_label_t label;
 284
 285         /* SRv6 VPN SID */
 286         struct bgp_attr_srv6_vpn *srv6_vpn;
 287
 288         /* SRv6 L3VPN SID */
 289         struct bgp_attr_srv6_l3vpn *srv6_l3vpn;
 290
 291         uint16_t encap_tunneltype;                   /* grr */
 292         struct bgp_attr_encap_subtlv *encap_subtlvs; /* rfc5512 */
 293
 294 #ifdef ENABLE_BGP_VNC
 295         struct bgp_attr_encap_subtlv *vnc_subtlvs; /* VNC-specific */
 296 #endif
 297         /* EVPN */
 298         struct bgp_route_evpn evpn_overlay;
 299
 300         /* EVPN MAC Mobility sequence number, if any. */
 301         uint32_t mm_seqnum;
 302         /* highest MM sequence number rxed in a MAC-IP route from an
 303          * ES peer (this includes both proxy and non-proxy MAC-IP
 304          * advertisements from ES peers).
 305          * This is only applicable to local paths in the VNI routing
 306          * table and derived from other imported/non-best paths.
 307          */
 308         uint32_t mm_sync_seqnum;
 309
 310         /* EVPN local router-mac */
 311         struct ethaddr rmac;
 312
 313         /* Distance as applied by Route map */
 314         uint8_t distance;
 315
 316         /* rmap set table */
 317         uint32_t rmap_table_id;
 318
 319         /* Link bandwidth value, if any. */
 320         uint32_t link_bw;
 321
 322         /* EVPN ES */
 323         esi_t esi;
 324
 325         /* SR-TE Color */
 326         uint32_t srte_color;
 327
 328         /* EVPN DF preference and algorithm for DF election on local ESs */
 329         uint16_t df_pref;
 330         uint8_t df_alg;
 331
 332         /* Nexthop type */
 333         enum nexthop_types_t nh_type;
 334
 335         /* If NEXTHOP_TYPE_BLACKHOLE, then blackhole type */
 336         enum blackhole_type bh_type;
 337
 338         /* OTC value if set */
 339         uint32_t otc;
 340 };
 341
 342 /* rmap_change_flags definition */
 343 #define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
 344 #define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
 345 #define BATTR_REFLECTED (1 << 2)
 346 #define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
 347 #define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
 348 #define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)
 349 #define BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED (1 << 6)
 350 #define BATTR_RMAP_LINK_BW_SET (1 << 7)
 351 #define BATTR_RMAP_L3VPN_ACCEPT_GRE (1 << 8)
 352
 353 /* Router Reflector related structure. */
 354 struct cluster_list {
 355         unsigned long refcnt;
 356         int length;
 357         struct in_addr *list;
 358 };
 359
 360 /* Unknown transit attribute. */
 361 struct transit {
 362         unsigned long refcnt;
 363         int length;
 364         uint8_t *val;
 365 };
 366
 367 /* "(void) 0" will generate a compiler error.  this is a safety check to
 368  * ensure we're not using a value that exceeds the bit size of attr->flag. */
 369 #define ATTR_FLAG_BIT(X)                                                       \
 370         __builtin_choose_expr((X) >= 1 && (X) <= 64, 1ULL << ((X)-1), (void)0)
 371
 372 #define BGP_CLUSTER_LIST_LENGTH(attr)                                          \
 373         (((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST))                 \
 374                  ? bgp_attr_get_cluster((attr))->length                        \
 375                  : 0)
 376
 377 enum bgp_attr_parse_ret {
 378         BGP_ATTR_PARSE_PROCEED = 0,
 379         BGP_ATTR_PARSE_ERROR = -1,
 380         BGP_ATTR_PARSE_WITHDRAW = -2,
 381
 382         /* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR
 383          */
 384         BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
 385         BGP_ATTR_PARSE_EOR = -4,
 386 };
 387
 388 struct bpacket_attr_vec_arr;
 389
 390 /* Prototypes. */
 391 extern void bgp_attr_init(void);
 392 extern void bgp_attr_finish(void);
 393 extern enum bgp_attr_parse_ret
 394 bgp_attr_parse(struct peer *peer, struct attr *attr, bgp_size_t size,
 395                struct bgp_nlri *mp_update, struct bgp_nlri *mp_withdraw);
 396 extern struct attr *bgp_attr_intern(struct attr *attr);
 397 extern void bgp_attr_unintern_sub(struct attr *attr);
 398 extern void bgp_attr_unintern(struct attr **pattr);
 399 extern void bgp_attr_flush(struct attr *attr);
 400 extern struct attr *bgp_attr_default_set(struct attr *attr, struct bgp *bgp,
 401                                          uint8_t origin);
 402 extern struct attr *bgp_attr_aggregate_intern(
 403         struct bgp *bgp, uint8_t origin, struct aspath *aspath,
 404         struct community *community, struct ecommunity *ecommunity,
 405         struct lcommunity *lcommunity, struct bgp_aggregate *aggregate,
 406         uint8_t atomic_aggregate, const struct prefix *p);
 407 extern bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer,
 408                                        struct stream *s, struct attr *attr,
 409                                        struct bpacket_attr_vec_arr *vecarr,
 410                                        struct prefix *p, afi_t afi, safi_t safi,
 411                                        struct peer *from, struct prefix_rd *prd,
 412                                        mpls_label_t *label, uint32_t num_labels,
 413                                        bool addpath_capable,
 414                                        uint32_t addpath_tx_id);
 415 extern void bgp_dump_routes_attr(struct stream *s, struct attr *attr,
 416                                  const struct prefix *p);
 417 extern bool attrhash_cmp(const void *arg1, const void *arg2);
 418 extern unsigned int attrhash_key_make(const void *p);
 419 extern void attr_show_all(struct vty *vty);
 420 extern unsigned long int attr_count(void);
 421 extern unsigned long int attr_unknown_count(void);
 422
 423 /* Cluster list prototypes. */
 424 extern bool cluster_loop_check(struct cluster_list *cluster,
 425                                struct in_addr originator);
 426
 427 /* Below exported for unit-test purposes only */
 428 struct bgp_attr_parser_args {
 429         struct peer *peer;
 430         bgp_size_t length; /* attribute data length; */
 431         bgp_size_t total;  /* total length, inc header */
 432         struct attr *attr;
 433         uint8_t type;
 434         uint8_t flags;
 435         uint8_t *startp;
 436 };
 437 extern int bgp_mp_reach_parse(struct bgp_attr_parser_args *args,
 438                               struct bgp_nlri *mp_update);
 439 extern int bgp_mp_unreach_parse(struct bgp_attr_parser_args *args,
 440                                 struct bgp_nlri *mp_withdraw);
 441 extern enum bgp_attr_parse_ret
 442 bgp_attr_prefix_sid(struct bgp_attr_parser_args *args);
 443
 444 extern struct bgp_attr_encap_subtlv *
 445 encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);
 446
 447 extern void bgp_attr_flush_encap(struct attr *attr);
 448
 449 extern void bgp_attr_extcom_tunnel_type(struct attr *attr,
 450                                          bgp_encap_types *tunnel_type);
 451
 452 /**
 453  * Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
 454  * Typical call sequence is to call _start(), followed by multiple _prefix(),
 455  * one for each NLRI that needs to be encoded into the UPDATE message, and
 456  * finally the _end() function.
 457  */
 458 extern size_t bgp_packet_mpattr_start(struct stream *s, struct peer *peer,
 459                                       afi_t afi, safi_t safi,
 460                                       struct bpacket_attr_vec_arr *vecarr,
 461                                       struct attr *attr);
 462 extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
 463                                      const struct prefix *p,
 464                                      const struct prefix_rd *prd,
 465                                      mpls_label_t *label, uint32_t num_labels,
 466                                      bool addpath_capable,
 467                                      uint32_t addpath_tx_id, struct attr *);
 468 extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
 469                                             const struct prefix *p);
 470 extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);
 471
 472 extern size_t bgp_packet_mpunreach_start(struct stream *s, afi_t afi,
 473                                          safi_t safi);
 474 extern void bgp_packet_mpunreach_prefix(
 475         struct stream *s, const struct prefix *p, afi_t afi, safi_t safi,
 476         const struct prefix_rd *prd, mpls_label_t *label, uint32_t num_labels,
 477         bool addpath_capable, uint32_t addpath_tx_id, struct attr *attr);
 478 extern void bgp_packet_mpunreach_end(struct stream *s, size_t attrlen_pnt);
 479
 480 extern enum bgp_attr_parse_ret bgp_attr_nexthop_valid(struct peer *peer,
 481                                                       struct attr *attr);
 482
 483 static inline int bgp_rmap_nhop_changed(uint32_t out_rmap_flags,
 484                                         uint32_t in_rmap_flags)
 485 {
 486         return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS)
 487                  || CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED)
 488                  || CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED)
 489                  || CHECK_FLAG(out_rmap_flags,
 490                                BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED)
 491                  || CHECK_FLAG(out_rmap_flags,
 492                                BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED)
 493                  || CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED)
 494                  || CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED))
 495                         ? 1
 496                         : 0);
 497 }
 498
 499 static inline uint32_t mac_mobility_seqnum(struct attr *attr)
 500 {
 501         return (attr) ? attr->mm_seqnum : 0;
 502 }
 503
 504 static inline enum pta_type bgp_attr_get_pmsi_tnl_type(struct attr *attr)
 505 {
 506         return attr->pmsi_tnl_type;
 507 }
 508
 509 static inline void bgp_attr_set_pmsi_tnl_type(struct attr *attr,
 510                                               enum pta_type pmsi_tnl_type)
 511 {
 512         attr->pmsi_tnl_type = pmsi_tnl_type;
 513 }
 514
 515 static inline struct ecommunity *
 516 bgp_attr_get_ecommunity(const struct attr *attr)
 517 {
 518         return attr->ecommunity;
 519 }
 520
 521 static inline void bgp_attr_set_ecommunity(struct attr *attr,
 522                                            struct ecommunity *ecomm)
 523 {
 524         attr->ecommunity = ecomm;
 525
 526         if (ecomm)
 527                 SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES));
 528         else
 529                 UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES));
 530 }
 531
 532 static inline struct lcommunity *
 533 bgp_attr_get_lcommunity(const struct attr *attr)
 534 {
 535         return attr->lcommunity;
 536 }
 537
 538 static inline void bgp_attr_set_lcommunity(struct attr *attr,
 539                                            struct lcommunity *lcomm)
 540 {
 541         attr->lcommunity = lcomm;
 542
 543         if (lcomm)
 544                 SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
 545         else
 546                 UNSET_FLAG(attr->flag,
 547                            ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
 548 }
 549
 550 static inline struct community *bgp_attr_get_community(const struct attr *attr)
 551 {
 552         return attr->community;
 553 }
 554
 555 static inline void bgp_attr_set_community(struct attr *attr,
 556                                           struct community *comm)
 557 {
 558         attr->community = comm;
 559
 560         if (comm)
 561                 SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES));
 562         else
 563                 UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES));
 564 }
 565
 566 static inline struct ecommunity *
 567 bgp_attr_get_ipv6_ecommunity(const struct attr *attr)
 568 {
 569         return attr->ipv6_ecommunity;
 570 }
 571
 572 static inline void bgp_attr_set_ipv6_ecommunity(struct attr *attr,
 573                                                 struct ecommunity *ipv6_ecomm)
 574 {
 575         attr->ipv6_ecommunity = ipv6_ecomm;
 576
 577         if (ipv6_ecomm)
 578                 SET_FLAG(attr->flag,
 579                          ATTR_FLAG_BIT(BGP_ATTR_IPV6_EXT_COMMUNITIES));
 580         else
 581                 UNSET_FLAG(attr->flag,
 582                            ATTR_FLAG_BIT(BGP_ATTR_IPV6_EXT_COMMUNITIES));
 583 }
 584
 585 static inline struct transit *bgp_attr_get_transit(const struct attr *attr)
 586 {
 587         return attr->transit;
 588 }
 589
 590 static inline void bgp_attr_set_transit(struct attr *attr,
 591                                         struct transit *transit)
 592 {
 593         attr->transit = transit;
 594 }
 595
 596 static inline struct cluster_list *bgp_attr_get_cluster(const struct attr *attr)
 597 {
 598         return attr->cluster1;
 599 }
 600
 601 static inline void bgp_attr_set_cluster(struct attr *attr,
 602                                         struct cluster_list *cl)
 603 {
 604         attr->cluster1 = cl;
 605 }
 606
 607 static inline const struct bgp_route_evpn *
 608 bgp_attr_get_evpn_overlay(const struct attr *attr)
 609 {
 610         return &attr->evpn_overlay;
 611 }
 612
 613 static inline void bgp_attr_set_evpn_overlay(struct attr *attr,
 614                                              struct bgp_route_evpn *eo)
 615 {
 616         memcpy(&attr->evpn_overlay, eo, sizeof(struct bgp_route_evpn));
 617 }
 618
 619 static inline struct bgp_attr_encap_subtlv *
 620 bgp_attr_get_vnc_subtlvs(const struct attr *attr)
 621 {
 622 #ifdef ENABLE_BGP_VNC
 623         return attr->vnc_subtlvs;
 624 #else
 625         return NULL;
 626 #endif
 627 }
 628
 629 static inline void
 630 bgp_attr_set_vnc_subtlvs(struct attr *attr,
 631                          struct bgp_attr_encap_subtlv *vnc_subtlvs)
 632 {
 633 #ifdef ENABLE_BGP_VNC
 634         attr->vnc_subtlvs = vnc_subtlvs;
 635 #endif
 636 }
 637
 638 #endif /* _QUAGGA_BGP_ATTR_H */