bgpd/bgp_evpn_private.h

   1 /* BGP EVPN internal definitions
   2  * Copyright (C) 2017 Cumulus Networks, Inc.
   3  *
   4  * This file is part of FRR.
   5  *
   6  * FRR 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  * FRR 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
  17  * along with FRR; see the file COPYING.  If not, write to the Free
  18  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19  * 02111-1307, USA.
  20  */
  21
  22 #ifndef _BGP_EVPN_PRIVATE_H
  23 #define _BGP_EVPN_PRIVATE_H
  24
  25 #include "vxlan.h"
  26 #include "zebra.h"
  27
  28 #include "bgpd/bgpd.h"
  29 #include "bgpd/bgp_ecommunity.h"
  30
  31 #define RT_ADDRSTRLEN 28
  32
  33 /* EVPN prefix lengths. This represents the sizeof struct evpn_addr
  34  * in bits  */
  35 #define EVPN_ROUTE_PREFIXLEN (sizeof(struct evpn_addr) * 8)
  36
  37 /* EVPN route types. */
  38 typedef enum {
  39         BGP_EVPN_AD_ROUTE = 1,    /* Ethernet Auto-Discovery (A-D) route */
  40         BGP_EVPN_MAC_IP_ROUTE,    /* MAC/IP Advertisement route */
  41         BGP_EVPN_IMET_ROUTE,      /* Inclusive Multicast Ethernet Tag route */
  42         BGP_EVPN_ES_ROUTE,      /* Ethernet Segment route */
  43         BGP_EVPN_IP_PREFIX_ROUTE, /* IP Prefix route */
  44 } bgp_evpn_route_type;
  45
  46 /*
  47  * Hash table of EVIs. Right now, the only type of EVI supported is with
  48  * VxLAN encapsulation, hence each EVI corresponds to a L2 VNI.
  49  * The VNIs are not "created" through BGP but through some other interface
  50  * on the system. This table stores VNIs that BGP comes to know as present
  51  * on the system (through interaction with zebra) as well as pre-configured
  52  * VNIs (which need to be defined in the system to become "live").
  53  */
  54 struct bgpevpn {
  55         vni_t vni;
  56         vrf_id_t tenant_vrf_id;
  57         uint32_t flags;
  58 #define VNI_FLAG_CFGD              0x1  /* VNI is user configured */
  59 #define VNI_FLAG_LIVE              0x2  /* VNI is "live" */
  60 #define VNI_FLAG_RD_CFGD           0x4  /* RD is user configured. */
  61 #define VNI_FLAG_IMPRT_CFGD        0x8  /* Import RT is user configured */
  62 #define VNI_FLAG_EXPRT_CFGD        0x10 /* Export RT is user configured */
  63 #define VNI_FLAG_USE_TWO_LABELS    0x20 /* Attach both L2-VNI and L3-VNI if
  64                                            needed for this VPN */
  65
  66         struct bgp *bgp_vrf; /* back pointer to the vrf instance */
  67
  68                                            /* Flag to indicate if we are
  69                                             * advertising the g/w mac ip for
  70                                             * this VNI*/
  71         uint8_t advertise_gw_macip;
  72
  73         /* Flag to indicate if we are
  74          * advertising subnet for this VNI */
  75         uint8_t advertise_subnet;
  76
  77         /* Flag to indicate if we are advertising the svi mac ip for this VNI*/
  78         uint8_t advertise_svi_macip;
  79
  80         /* Id for deriving the RD
  81          * automatically for this VNI */
  82         uint16_t rd_id;
  83
  84         /* RD for this VNI. */
  85         struct prefix_rd prd;
  86
  87         /* Route type 3 field */
  88         struct in_addr originator_ip;
  89
  90         /* PIM-SM MDT group for BUM flooding */
  91         struct in_addr mcast_grp;
  92
  93         /* Import and Export RTs. */
  94         struct list *import_rtl;
  95         struct list *export_rtl;
  96
  97         /* Route table for EVPN routes for
  98          * this VNI. */
  99         struct bgp_table *route_table;
 100
 101         QOBJ_FIELDS
 102 };
 103
 104 DECLARE_QOBJ_TYPE(bgpevpn)
 105
 106 struct evpnes {
 107
 108         /* Ethernet Segment Identifier */
 109         esi_t esi;
 110
 111         /* es flags */
 112         uint16_t flags;
 113 #define EVPNES_LOCAL    0x01
 114 #define EVPNES_REMOTE   0x02
 115
 116         /*
 117          * Id for deriving the RD
 118          * automatically for this ESI
 119          */
 120         uint16_t rd_id;
 121
 122         /* RD for this VNI. */
 123         struct prefix_rd prd;
 124
 125         /* originator ip address  */
 126         struct ipaddr originator_ip;
 127
 128         /* list of VTEPs in the same site */
 129         struct list *vtep_list;
 130
 131         /*
 132          * Route table for EVPN routes for
 133          * this ESI. - type4 routes
 134          */
 135         struct bgp_table *route_table;
 136
 137         QOBJ_FIELDS
 138 };
 139
 140 DECLARE_QOBJ_TYPE(evpnes)
 141
 142 /* Mapping of Import RT to VNIs.
 143  * The Import RTs of all VNIs are maintained in a hash table with each
 144  * RT linking to all VNIs that will import routes matching this RT.
 145  */
 146 struct irt_node {
 147         /* RT */
 148         struct ecommunity_val rt;
 149
 150         /* List of VNIs importing routes matching this RT. */
 151         struct list *vnis;
 152 };
 153
 154 /* Mapping of Import RT to VRFs.
 155  * The Import RTs of all VRFss are maintained in a hash table with each
 156  * RT linking to all VRFs that will import routes matching this RT.
 157  */
 158 struct vrf_irt_node {
 159         /* RT */
 160         struct ecommunity_val rt;
 161
 162         /* List of VNIs importing routes matching this RT. */
 163         struct list *vrfs;
 164 };
 165
 166
 167 #define RT_TYPE_IMPORT 1
 168 #define RT_TYPE_EXPORT 2
 169 #define RT_TYPE_BOTH   3
 170
 171 #define EVPN_DAD_DEFAULT_TIME 180 /* secs */
 172 #define EVPN_DAD_DEFAULT_MAX_MOVES 5 /* default from RFC 7432 */
 173 #define EVPN_DAD_DEFAULT_AUTO_RECOVERY_TIME 1800 /* secs */
 174
 175 struct bgp_evpn_info {
 176         /* enable disable dup detect */
 177         bool dup_addr_detect;
 178
 179         /* Detection time(M) */
 180         int dad_time;
 181         /* Detection max moves(N) */
 182         uint32_t dad_max_moves;
 183         /* Permanent freeze */
 184         bool dad_freeze;
 185         /* Recovery time */
 186         uint32_t dad_freeze_time;
 187
 188         /* EVPN enable - advertise svi macip routes */
 189         int advertise_svi_macip;
 190
 191 };
 192
 193 static inline int is_vrf_rd_configured(struct bgp *bgp_vrf)
 194 {
 195         return (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_RD_CFGD));
 196 }
 197
 198 static inline int bgp_evpn_vrf_rd_matches_existing(struct bgp *bgp_vrf,
 199                                                    struct prefix_rd *prd)
 200 {
 201         return (memcmp(&bgp_vrf->vrf_prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
 202 }
 203
 204 static inline vni_t bgpevpn_get_l3vni(struct bgpevpn *vpn)
 205 {
 206         return vpn->bgp_vrf ? vpn->bgp_vrf->l3vni : 0;
 207 }
 208
 209 static inline void bgpevpn_get_rmac(struct bgpevpn *vpn, struct ethaddr *rmac)
 210 {
 211         memset(rmac, 0, sizeof(struct ethaddr));
 212         if (!vpn->bgp_vrf)
 213                 return;
 214         memcpy(rmac, &vpn->bgp_vrf->rmac, sizeof(struct ethaddr));
 215 }
 216
 217 static inline struct list *bgpevpn_get_vrf_export_rtl(struct bgpevpn *vpn)
 218 {
 219         if (!vpn->bgp_vrf)
 220                 return NULL;
 221
 222         return vpn->bgp_vrf->vrf_export_rtl;
 223 }
 224
 225 static inline struct list *bgpevpn_get_vrf_import_rtl(struct bgpevpn *vpn)
 226 {
 227         if (!vpn->bgp_vrf)
 228                 return NULL;
 229
 230         return vpn->bgp_vrf->vrf_import_rtl;
 231 }
 232
 233 static inline void bgpevpn_unlink_from_l3vni(struct bgpevpn *vpn)
 234 {
 235         /* bail if vpn is not associated to bgp_vrf */
 236         if (!vpn->bgp_vrf)
 237                 return;
 238
 239         UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
 240         listnode_delete(vpn->bgp_vrf->l2vnis, vpn);
 241
 242         /* remove the backpointer to the vrf instance */
 243         bgp_unlock(vpn->bgp_vrf);
 244         vpn->bgp_vrf = NULL;
 245 }
 246
 247 static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn)
 248 {
 249         struct bgp *bgp_vrf = NULL;
 250
 251         /* bail if vpn is already associated to vrf */
 252         if (vpn->bgp_vrf)
 253                 return;
 254
 255         bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id);
 256         if (!bgp_vrf)
 257                 return;
 258
 259         /* associate the vpn to the bgp_vrf instance */
 260         vpn->bgp_vrf = bgp_lock(bgp_vrf);
 261         listnode_add_sort(bgp_vrf->l2vnis, vpn);
 262
 263         /* check if we are advertising two labels for this vpn */
 264         if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY))
 265                 SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
 266 }
 267
 268 static inline int is_vni_configured(struct bgpevpn *vpn)
 269 {
 270         return (CHECK_FLAG(vpn->flags, VNI_FLAG_CFGD));
 271 }
 272
 273 static inline int is_vni_live(struct bgpevpn *vpn)
 274 {
 275         return (CHECK_FLAG(vpn->flags, VNI_FLAG_LIVE));
 276 }
 277
 278 static inline int is_l3vni_live(struct bgp *bgp_vrf)
 279 {
 280         return (bgp_vrf->l3vni && bgp_vrf->l3vni_svi_ifindex);
 281 }
 282
 283 static inline int is_rd_configured(struct bgpevpn *vpn)
 284 {
 285         return (CHECK_FLAG(vpn->flags, VNI_FLAG_RD_CFGD));
 286 }
 287
 288 static inline int bgp_evpn_rd_matches_existing(struct bgpevpn *vpn,
 289                                                struct prefix_rd *prd)
 290 {
 291         return (memcmp(&vpn->prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
 292 }
 293
 294 static inline int is_import_rt_configured(struct bgpevpn *vpn)
 295 {
 296         return (CHECK_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD));
 297 }
 298
 299 static inline int is_export_rt_configured(struct bgpevpn *vpn)
 300 {
 301         return (CHECK_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD));
 302 }
 303
 304 static inline int is_vni_param_configured(struct bgpevpn *vpn)
 305 {
 306         return (is_rd_configured(vpn) || is_import_rt_configured(vpn)
 307                 || is_export_rt_configured(vpn));
 308 }
 309
 310 static inline void encode_es_rt_extcomm(struct ecommunity_val *eval,
 311                                         struct ethaddr *mac)
 312 {
 313         memset(eval, 0, sizeof(struct ecommunity_val));
 314         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 315         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT;
 316         memcpy(&eval->val[2], mac, ETH_ALEN);
 317 }
 318
 319 static inline void encode_rmac_extcomm(struct ecommunity_val *eval,
 320                                        struct ethaddr *rmac)
 321 {
 322         memset(eval, 0, sizeof(*eval));
 323         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 324         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
 325         memcpy(&eval->val[2], rmac, ETH_ALEN);
 326 }
 327
 328 static inline void encode_default_gw_extcomm(struct ecommunity_val *eval)
 329 {
 330         memset(eval, 0, sizeof(*eval));
 331         eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
 332         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_DEF_GW;
 333 }
 334
 335 static inline void encode_mac_mobility_extcomm(int static_mac, uint32_t seq,
 336                                                struct ecommunity_val *eval)
 337 {
 338         memset(eval, 0, sizeof(*eval));
 339         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 340         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY;
 341         if (static_mac)
 342                 eval->val[2] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY;
 343         eval->val[4] = (seq >> 24) & 0xff;
 344         eval->val[5] = (seq >> 16) & 0xff;
 345         eval->val[6] = (seq >> 8) & 0xff;
 346         eval->val[7] = seq & 0xff;
 347 }
 348
 349 static inline void encode_na_flag_extcomm(struct ecommunity_val *eval,
 350                                           uint8_t na_flag)
 351 {
 352         memset(eval, 0, sizeof(*eval));
 353         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 354         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ND;
 355         if (na_flag)
 356                 eval->val[2] |= ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG;
 357 }
 358
 359 static inline void ip_prefix_from_type5_prefix(struct prefix_evpn *evp,
 360                                                struct prefix *ip)
 361 {
 362         memset(ip, 0, sizeof(struct prefix));
 363         if (is_evpn_prefix_ipaddr_v4(evp)) {
 364                 ip->family = AF_INET;
 365                 ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
 366                 memcpy(&(ip->u.prefix4), &(evp->prefix.prefix_addr.ip.ip),
 367                        IPV4_MAX_BYTELEN);
 368         } else if (is_evpn_prefix_ipaddr_v6(evp)) {
 369                 ip->family = AF_INET6;
 370                 ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
 371                 memcpy(&(ip->u.prefix6), &(evp->prefix.prefix_addr.ip.ip),
 372                        IPV6_MAX_BYTELEN);
 373         }
 374 }
 375
 376 static inline int is_evpn_prefix_default(const struct prefix *evp)
 377 {
 378         if (evp->family != AF_EVPN)
 379                 return 0;
 380
 381         return ((evp->u.prefix_evpn.prefix_addr.ip_prefix_length  == 0) ?
 382                 1 : 0);
 383 }
 384
 385 static inline void ip_prefix_from_type2_prefix(struct prefix_evpn *evp,
 386                                                struct prefix *ip)
 387 {
 388         memset(ip, 0, sizeof(struct prefix));
 389         if (is_evpn_prefix_ipaddr_v4(evp)) {
 390                 ip->family = AF_INET;
 391                 ip->prefixlen = IPV4_MAX_BITLEN;
 392                 memcpy(&(ip->u.prefix4), &(evp->prefix.macip_addr.ip.ip),
 393                        IPV4_MAX_BYTELEN);
 394         } else if (is_evpn_prefix_ipaddr_v6(evp)) {
 395                 ip->family = AF_INET6;
 396                 ip->prefixlen = IPV6_MAX_BITLEN;
 397                 memcpy(&(ip->u.prefix6), &(evp->prefix.macip_addr.ip.ip),
 398                        IPV6_MAX_BYTELEN);
 399         }
 400 }
 401
 402 static inline void ip_prefix_from_evpn_prefix(struct prefix_evpn *evp,
 403                                               struct prefix *ip)
 404 {
 405         if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)
 406                 ip_prefix_from_type2_prefix(evp, ip);
 407         else if (evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)
 408                 ip_prefix_from_type5_prefix(evp, ip);
 409 }
 410
 411 static inline void build_evpn_type2_prefix(struct prefix_evpn *p,
 412                                            struct ethaddr *mac,
 413                                            struct ipaddr *ip)
 414 {
 415         memset(p, 0, sizeof(struct prefix_evpn));
 416         p->family = AF_EVPN;
 417         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 418         p->prefix.route_type = BGP_EVPN_MAC_IP_ROUTE;
 419         memcpy(&p->prefix.macip_addr.mac.octet, mac->octet, ETH_ALEN);
 420         p->prefix.macip_addr.ip.ipa_type = IPADDR_NONE;
 421         if (ip)
 422                 memcpy(&p->prefix.macip_addr.ip, ip, sizeof(*ip));
 423 }
 424
 425 static inline void build_type5_prefix_from_ip_prefix(struct prefix_evpn *evp,
 426                                                      struct prefix *ip_prefix)
 427 {
 428         struct ipaddr ip;
 429
 430         memset(&ip, 0, sizeof(struct ipaddr));
 431         if (ip_prefix->family == AF_INET) {
 432                 ip.ipa_type = IPADDR_V4;
 433                 memcpy(&ip.ipaddr_v4, &ip_prefix->u.prefix4,
 434                        sizeof(struct in_addr));
 435         } else {
 436                 ip.ipa_type = IPADDR_V6;
 437                 memcpy(&ip.ipaddr_v6, &ip_prefix->u.prefix6,
 438                        sizeof(struct in6_addr));
 439         }
 440
 441         memset(evp, 0, sizeof(struct prefix_evpn));
 442         evp->family = AF_EVPN;
 443         evp->prefixlen = EVPN_ROUTE_PREFIXLEN;
 444         evp->prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE;
 445         evp->prefix.prefix_addr.ip_prefix_length = ip_prefix->prefixlen;
 446         evp->prefix.prefix_addr.ip.ipa_type = ip.ipa_type;
 447         memcpy(&evp->prefix.prefix_addr.ip, &ip, sizeof(struct ipaddr));
 448 }
 449
 450 static inline void build_evpn_type3_prefix(struct prefix_evpn *p,
 451                                            struct in_addr originator_ip)
 452 {
 453         memset(p, 0, sizeof(struct prefix_evpn));
 454         p->family = AF_EVPN;
 455         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 456         p->prefix.route_type = BGP_EVPN_IMET_ROUTE;
 457         p->prefix.imet_addr.ip.ipa_type = IPADDR_V4;
 458         p->prefix.imet_addr.ip.ipaddr_v4 = originator_ip;
 459 }
 460
 461 static inline void build_evpn_type4_prefix(struct prefix_evpn *p,
 462                                            esi_t *esi,
 463                                            struct in_addr originator_ip)
 464 {
 465         memset(p, 0, sizeof(struct prefix_evpn));
 466         p->family = AF_EVPN;
 467         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 468         p->prefix.route_type = BGP_EVPN_ES_ROUTE;
 469         p->prefix.es_addr.ip_prefix_length = IPV4_MAX_BITLEN;
 470         p->prefix.es_addr.ip.ipa_type = IPADDR_V4;
 471         p->prefix.es_addr.ip.ipaddr_v4 = originator_ip;
 472         memcpy(&p->prefix.es_addr.esi, esi, sizeof(esi_t));
 473 }
 474
 475 static inline int evpn_default_originate_set(struct bgp *bgp, afi_t afi,
 476                                              safi_t safi)
 477 {
 478         if (afi == AFI_IP &&
 479             CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
 480                        BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4))
 481                 return 1;
 482         else if (afi == AFI_IP6 &&
 483                  CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
 484                             BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6))
 485                 return 1;
 486         return 0;
 487 }
 488
 489 static inline void es_get_system_mac(esi_t *esi,
 490                                      struct ethaddr *mac)
 491 {
 492         /*
 493          * for type-1 and type-3 ESIs,
 494          * the system mac starts at val[1]
 495          */
 496         memcpy(mac, &esi->val[1], ETH_ALEN);
 497 }
 498
 499 static inline int is_es_local(struct evpnes *es)
 500 {
 501         return CHECK_FLAG(es->flags, EVPNES_LOCAL) ? 1 : 0;
 502 }
 503
 504 extern void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf,
 505                                                      afi_t afi, safi_t safi,
 506                                                      bool add);
 507 extern void evpn_rt_delete_auto(struct bgp *, vni_t, struct list *);
 508 extern void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf,
 509                                                  struct ecommunity *ecomadd);
 510 extern void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf,
 511                                                    struct ecommunity *ecomdel);
 512 extern void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf,
 513                                                  struct ecommunity *ecomadd);
 514 extern void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf,
 515                                                    struct ecommunity *ecomdel);
 516 extern int bgp_evpn_handle_export_rt_change(struct bgp *bgp,
 517                                             struct bgpevpn *vpn);
 518 extern void bgp_evpn_handle_autort_change(struct bgp *bgp);
 519 extern void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw);
 520 extern void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn,
 521                                       int withdraw);
 522 extern int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn);
 523 extern int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn);
 524 extern void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf);
 525 extern void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf);
 526 extern void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn);
 527 extern void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp,
 528                                             struct bgpevpn *vpn);
 529 extern void bgp_evpn_derive_auto_rt_import(struct bgp *bgp,
 530                                            struct bgpevpn *vpn);
 531 extern void bgp_evpn_derive_auto_rt_export(struct bgp *bgp,
 532                                            struct bgpevpn *vpn);
 533 extern void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn);
 534 extern void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp);
 535 extern struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni);
 536 extern struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni,
 537                 struct in_addr originator_ip,
 538                 vrf_id_t tenant_vrf_id,
 539                 struct in_addr mcast_grp);
 540 extern void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn);
 541 extern struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi);
 542 extern struct evpnes *bgp_evpn_es_new(struct bgp *bgp, esi_t *esi,
 543                                       struct ipaddr *originator_ip);
 544 extern void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es);
 545 extern bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni);
 546 #endif /* _BGP_EVPN_PRIVATE_H */