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         /* Import and Export RTs. */
  91         struct list *import_rtl;
  92         struct list *export_rtl;
  93
  94         /* Route table for EVPN routes for
  95          * this VNI. */
  96         struct bgp_table *route_table;
  97
  98         QOBJ_FIELDS
  99 };
 100
 101 DECLARE_QOBJ_TYPE(bgpevpn)
 102
 103 struct evpnes {
 104
 105         /* Ethernet Segment Identifier */
 106         esi_t esi;
 107
 108         /* es flags */
 109         uint16_t flags;
 110 #define EVPNES_LOCAL    0x01
 111 #define EVPNES_REMOTE   0x02
 112
 113         /*
 114          * Id for deriving the RD
 115          * automatically for this ESI
 116          */
 117         uint16_t rd_id;
 118
 119         /* RD for this VNI. */
 120         struct prefix_rd prd;
 121
 122         /* originator ip address  */
 123         struct ipaddr originator_ip;
 124
 125         /* list of VTEPs in the same site */
 126         struct list *vtep_list;
 127
 128         /*
 129          * Route table for EVPN routes for
 130          * this ESI. - type4 routes
 131          */
 132         struct bgp_table *route_table;
 133
 134         QOBJ_FIELDS
 135 };
 136
 137 DECLARE_QOBJ_TYPE(evpnes)
 138
 139 /* Mapping of Import RT to VNIs.
 140  * The Import RTs of all VNIs are maintained in a hash table with each
 141  * RT linking to all VNIs that will import routes matching this RT.
 142  */
 143 struct irt_node {
 144         /* RT */
 145         struct ecommunity_val rt;
 146
 147         /* List of VNIs importing routes matching this RT. */
 148         struct list *vnis;
 149 };
 150
 151 /* Mapping of Import RT to VRFs.
 152  * The Import RTs of all VRFss are maintained in a hash table with each
 153  * RT linking to all VRFs that will import routes matching this RT.
 154  */
 155 struct vrf_irt_node {
 156         /* RT */
 157         struct ecommunity_val rt;
 158
 159         /* List of VNIs importing routes matching this RT. */
 160         struct list *vrfs;
 161 };
 162
 163
 164 #define RT_TYPE_IMPORT 1
 165 #define RT_TYPE_EXPORT 2
 166 #define RT_TYPE_BOTH   3
 167
 168 #define EVPN_DAD_DEFAULT_TIME 180 /* secs */
 169 #define EVPN_DAD_DEFAULT_MAX_MOVES 5 /* default from RFC 7432 */
 170 #define EVPN_DAD_DEFAULT_AUTO_RECOVERY_TIME 1800 /* secs */
 171
 172 struct bgp_evpn_info {
 173         /* enable disable dup detect */
 174         bool dup_addr_detect;
 175
 176         /* Detection time(M) */
 177         int dad_time;
 178         /* Detection max moves(N) */
 179         uint32_t dad_max_moves;
 180         /* Permanent freeze */
 181         bool dad_freeze;
 182         /* Recovery time */
 183         uint32_t dad_freeze_time;
 184
 185         /* EVPN enable - advertise svi macip routes */
 186         int advertise_svi_macip;
 187
 188 };
 189
 190 static inline int is_vrf_rd_configured(struct bgp *bgp_vrf)
 191 {
 192         return (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_RD_CFGD));
 193 }
 194
 195 static inline int bgp_evpn_vrf_rd_matches_existing(struct bgp *bgp_vrf,
 196                                                    struct prefix_rd *prd)
 197 {
 198         return (memcmp(&bgp_vrf->vrf_prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
 199 }
 200
 201 static inline vni_t bgpevpn_get_l3vni(struct bgpevpn *vpn)
 202 {
 203         return vpn->bgp_vrf ? vpn->bgp_vrf->l3vni : 0;
 204 }
 205
 206 static inline void bgpevpn_get_rmac(struct bgpevpn *vpn, struct ethaddr *rmac)
 207 {
 208         memset(rmac, 0, sizeof(struct ethaddr));
 209         if (!vpn->bgp_vrf)
 210                 return;
 211         memcpy(rmac, &vpn->bgp_vrf->rmac, sizeof(struct ethaddr));
 212 }
 213
 214 static inline struct list *bgpevpn_get_vrf_export_rtl(struct bgpevpn *vpn)
 215 {
 216         if (!vpn->bgp_vrf)
 217                 return NULL;
 218
 219         return vpn->bgp_vrf->vrf_export_rtl;
 220 }
 221
 222 static inline struct list *bgpevpn_get_vrf_import_rtl(struct bgpevpn *vpn)
 223 {
 224         if (!vpn->bgp_vrf)
 225                 return NULL;
 226
 227         return vpn->bgp_vrf->vrf_import_rtl;
 228 }
 229
 230 static inline void bgpevpn_unlink_from_l3vni(struct bgpevpn *vpn)
 231 {
 232         /* bail if vpn is not associated to bgp_vrf */
 233         if (!vpn->bgp_vrf)
 234                 return;
 235
 236         UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
 237         listnode_delete(vpn->bgp_vrf->l2vnis, vpn);
 238
 239         /* remove the backpointer to the vrf instance */
 240         vpn->bgp_vrf = NULL;
 241 }
 242
 243 static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn)
 244 {
 245         struct bgp *bgp_vrf = NULL;
 246
 247         /* bail if vpn is already associated to vrf */
 248         if (vpn->bgp_vrf)
 249                 return;
 250
 251         bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id);
 252         if (!bgp_vrf)
 253                 return;
 254
 255         /* associate the vpn to the bgp_vrf instance */
 256         vpn->bgp_vrf = bgp_vrf;
 257         listnode_add_sort(bgp_vrf->l2vnis, vpn);
 258
 259         /* check if we are advertising two labels for this vpn */
 260         if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY))
 261                 SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
 262 }
 263
 264 static inline int is_vni_configured(struct bgpevpn *vpn)
 265 {
 266         return (CHECK_FLAG(vpn->flags, VNI_FLAG_CFGD));
 267 }
 268
 269 static inline int is_vni_live(struct bgpevpn *vpn)
 270 {
 271         return (CHECK_FLAG(vpn->flags, VNI_FLAG_LIVE));
 272 }
 273
 274 static inline int is_rd_configured(struct bgpevpn *vpn)
 275 {
 276         return (CHECK_FLAG(vpn->flags, VNI_FLAG_RD_CFGD));
 277 }
 278
 279 static inline int bgp_evpn_rd_matches_existing(struct bgpevpn *vpn,
 280                                                struct prefix_rd *prd)
 281 {
 282         return (memcmp(&vpn->prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
 283 }
 284
 285 static inline int is_import_rt_configured(struct bgpevpn *vpn)
 286 {
 287         return (CHECK_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD));
 288 }
 289
 290 static inline int is_export_rt_configured(struct bgpevpn *vpn)
 291 {
 292         return (CHECK_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD));
 293 }
 294
 295 static inline int is_vni_param_configured(struct bgpevpn *vpn)
 296 {
 297         return (is_rd_configured(vpn) || is_import_rt_configured(vpn)
 298                 || is_export_rt_configured(vpn));
 299 }
 300
 301 static inline void encode_es_rt_extcomm(struct ecommunity_val *eval,
 302                                         struct ethaddr *mac)
 303 {
 304         memset(eval, 0, sizeof(struct ecommunity_val));
 305         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 306         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT;
 307         memcpy(&eval->val[2], mac, ETH_ALEN);
 308 }
 309
 310 static inline void encode_rmac_extcomm(struct ecommunity_val *eval,
 311                                        struct ethaddr *rmac)
 312 {
 313         memset(eval, 0, sizeof(*eval));
 314         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 315         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
 316         memcpy(&eval->val[2], rmac, ETH_ALEN);
 317 }
 318
 319 static inline void encode_default_gw_extcomm(struct ecommunity_val *eval)
 320 {
 321         memset(eval, 0, sizeof(*eval));
 322         eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
 323         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_DEF_GW;
 324 }
 325
 326 static inline void encode_mac_mobility_extcomm(int static_mac, uint32_t seq,
 327                                                struct ecommunity_val *eval)
 328 {
 329         memset(eval, 0, sizeof(*eval));
 330         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 331         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY;
 332         if (static_mac)
 333                 eval->val[2] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY;
 334         eval->val[4] = (seq >> 24) & 0xff;
 335         eval->val[5] = (seq >> 16) & 0xff;
 336         eval->val[6] = (seq >> 8) & 0xff;
 337         eval->val[7] = seq & 0xff;
 338 }
 339
 340 static inline void encode_na_flag_extcomm(struct ecommunity_val *eval,
 341                                           uint8_t na_flag)
 342 {
 343         memset(eval, 0, sizeof(*eval));
 344         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 345         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ND;
 346         if (na_flag)
 347                 eval->val[2] |= ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG;
 348 }
 349
 350 static inline void ip_prefix_from_type5_prefix(struct prefix_evpn *evp,
 351                                                struct prefix *ip)
 352 {
 353         memset(ip, 0, sizeof(struct prefix));
 354         if (is_evpn_prefix_ipaddr_v4(evp)) {
 355                 ip->family = AF_INET;
 356                 ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
 357                 memcpy(&(ip->u.prefix4), &(evp->prefix.prefix_addr.ip.ip),
 358                        IPV4_MAX_BYTELEN);
 359         } else if (is_evpn_prefix_ipaddr_v6(evp)) {
 360                 ip->family = AF_INET6;
 361                 ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
 362                 memcpy(&(ip->u.prefix6), &(evp->prefix.prefix_addr.ip.ip),
 363                        IPV6_MAX_BYTELEN);
 364         }
 365 }
 366
 367 static inline int is_evpn_prefix_default(const struct prefix *evp)
 368 {
 369         if (evp->family != AF_EVPN)
 370                 return 0;
 371
 372         return ((evp->u.prefix_evpn.prefix_addr.ip_prefix_length  == 0) ?
 373                 1 : 0);
 374 }
 375
 376 static inline void ip_prefix_from_type2_prefix(struct prefix_evpn *evp,
 377                                                struct prefix *ip)
 378 {
 379         memset(ip, 0, sizeof(struct prefix));
 380         if (is_evpn_prefix_ipaddr_v4(evp)) {
 381                 ip->family = AF_INET;
 382                 ip->prefixlen = IPV4_MAX_BITLEN;
 383                 memcpy(&(ip->u.prefix4), &(evp->prefix.macip_addr.ip.ip),
 384                        IPV4_MAX_BYTELEN);
 385         } else if (is_evpn_prefix_ipaddr_v6(evp)) {
 386                 ip->family = AF_INET6;
 387                 ip->prefixlen = IPV6_MAX_BITLEN;
 388                 memcpy(&(ip->u.prefix6), &(evp->prefix.macip_addr.ip.ip),
 389                        IPV6_MAX_BYTELEN);
 390         }
 391 }
 392
 393 static inline void ip_prefix_from_evpn_prefix(struct prefix_evpn *evp,
 394                                               struct prefix *ip)
 395 {
 396         if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)
 397                 ip_prefix_from_type2_prefix(evp, ip);
 398         else if (evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)
 399                 ip_prefix_from_type5_prefix(evp, ip);
 400 }
 401
 402 static inline void build_evpn_type2_prefix(struct prefix_evpn *p,
 403                                            struct ethaddr *mac,
 404                                            struct ipaddr *ip)
 405 {
 406         memset(p, 0, sizeof(struct prefix_evpn));
 407         p->family = AF_EVPN;
 408         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 409         p->prefix.route_type = BGP_EVPN_MAC_IP_ROUTE;
 410         memcpy(&p->prefix.macip_addr.mac.octet, mac->octet, ETH_ALEN);
 411         p->prefix.macip_addr.ip.ipa_type = IPADDR_NONE;
 412         if (ip)
 413                 memcpy(&p->prefix.macip_addr.ip, ip, sizeof(*ip));
 414 }
 415
 416 static inline void build_type5_prefix_from_ip_prefix(struct prefix_evpn *evp,
 417                                                      struct prefix *ip_prefix)
 418 {
 419         struct ipaddr ip;
 420
 421         memset(&ip, 0, sizeof(struct ipaddr));
 422         if (ip_prefix->family == AF_INET) {
 423                 ip.ipa_type = IPADDR_V4;
 424                 memcpy(&ip.ipaddr_v4, &ip_prefix->u.prefix4,
 425                        sizeof(struct in_addr));
 426         } else {
 427                 ip.ipa_type = IPADDR_V6;
 428                 memcpy(&ip.ipaddr_v6, &ip_prefix->u.prefix6,
 429                        sizeof(struct in6_addr));
 430         }
 431
 432         memset(evp, 0, sizeof(struct prefix_evpn));
 433         evp->family = AF_EVPN;
 434         evp->prefixlen = EVPN_ROUTE_PREFIXLEN;
 435         evp->prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE;
 436         evp->prefix.prefix_addr.ip_prefix_length = ip_prefix->prefixlen;
 437         evp->prefix.prefix_addr.ip.ipa_type = ip.ipa_type;
 438         memcpy(&evp->prefix.prefix_addr.ip, &ip, sizeof(struct ipaddr));
 439 }
 440
 441 static inline void build_evpn_type3_prefix(struct prefix_evpn *p,
 442                                            struct in_addr originator_ip)
 443 {
 444         memset(p, 0, sizeof(struct prefix_evpn));
 445         p->family = AF_EVPN;
 446         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 447         p->prefix.route_type = BGP_EVPN_IMET_ROUTE;
 448         p->prefix.imet_addr.ip.ipa_type = IPADDR_V4;
 449         p->prefix.imet_addr.ip.ipaddr_v4 = originator_ip;
 450 }
 451
 452 static inline void build_evpn_type4_prefix(struct prefix_evpn *p,
 453                                            esi_t *esi,
 454                                            struct in_addr originator_ip)
 455 {
 456         memset(p, 0, sizeof(struct prefix_evpn));
 457         p->family = AF_EVPN;
 458         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 459         p->prefix.route_type = BGP_EVPN_ES_ROUTE;
 460         p->prefix.es_addr.ip_prefix_length = IPV4_MAX_BITLEN;
 461         p->prefix.es_addr.ip.ipa_type = IPADDR_V4;
 462         p->prefix.es_addr.ip.ipaddr_v4 = originator_ip;
 463         memcpy(&p->prefix.es_addr.esi, esi, sizeof(esi_t));
 464 }
 465
 466 static inline int evpn_default_originate_set(struct bgp *bgp, afi_t afi,
 467                                              safi_t safi)
 468 {
 469         if (afi == AFI_IP &&
 470             CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
 471                        BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4))
 472                 return 1;
 473         else if (afi == AFI_IP6 &&
 474                  CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
 475                             BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6))
 476                 return 1;
 477         return 0;
 478 }
 479
 480 static inline void es_get_system_mac(esi_t *esi,
 481                                      struct ethaddr *mac)
 482 {
 483         /*
 484          * for type-1 and type-3 ESIs,
 485          * the system mac starts at val[1]
 486          */
 487         memcpy(mac, &esi->val[1], ETH_ALEN);
 488 }
 489
 490 static inline int is_es_local(struct evpnes *es)
 491 {
 492         return CHECK_FLAG(es->flags, EVPNES_LOCAL) ? 1 : 0;
 493 }
 494
 495 extern void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf,
 496                                                      afi_t afi, safi_t safi,
 497                                                      bool add);
 498 extern void evpn_rt_delete_auto(struct bgp *, vni_t, struct list *);
 499 extern void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf,
 500                                                  struct ecommunity *ecomadd);
 501 extern void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf,
 502                                                    struct ecommunity *ecomdel);
 503 extern void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf,
 504                                                  struct ecommunity *ecomadd);
 505 extern void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf,
 506                                                    struct ecommunity *ecomdel);
 507 extern int bgp_evpn_handle_export_rt_change(struct bgp *bgp,
 508                                             struct bgpevpn *vpn);
 509 extern void bgp_evpn_handle_autort_change(struct bgp *bgp);
 510 extern void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw);
 511 extern void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn,
 512                                       int withdraw);
 513 extern int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn);
 514 extern int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn);
 515 extern void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf);
 516 extern void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf);
 517 extern void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn);
 518 extern void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp,
 519                                             struct bgpevpn *vpn);
 520 extern void bgp_evpn_derive_auto_rt_import(struct bgp *bgp,
 521                                            struct bgpevpn *vpn);
 522 extern void bgp_evpn_derive_auto_rt_export(struct bgp *bgp,
 523                                            struct bgpevpn *vpn);
 524 extern void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn);
 525 extern void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp);
 526 extern struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni);
 527 extern struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni,
 528                                     struct in_addr originator_ip,
 529                                     vrf_id_t tenant_vrf_id);
 530 extern void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn);
 531 extern struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi);
 532 extern struct evpnes *bgp_evpn_es_new(struct bgp *bgp, esi_t *esi,
 533                                       struct ipaddr *originator_ip);
 534 extern void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es);
 535 extern bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni);
 536 #endif /* _BGP_EVPN_PRIVATE_H */