bgpd/bgp_evpn_private.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* BGP EVPN internal definitions
   3  * Copyright (C) 2017 Cumulus Networks, Inc.
   4  */
   5
   6 #ifndef _BGP_EVPN_PRIVATE_H
   7 #define _BGP_EVPN_PRIVATE_H
   8
   9 #include "vxlan.h"
  10 #include "zebra.h"
  11
  12 #include "bgpd/bgpd.h"
  13 #include "bgpd/bgp_ecommunity.h"
  14
  15 #define RT_ADDRSTRLEN 28
  16
  17 /* EVPN prefix lengths. This represents the sizeof struct evpn_addr
  18  * in bits  */
  19 #define EVPN_ROUTE_PREFIXLEN (sizeof(struct evpn_addr) * 8)
  20
  21 /* EVPN route RD buffer length */
  22 #define BGP_EVPN_PREFIX_RD_LEN 100
  23
  24 /* packet sizes for EVPN routes */
  25 /* Type-1 route should be 25 bytes
  26  *  RD (8), ESI (10), eth-tag (4), vni (3)
  27  */
  28 #define BGP_EVPN_TYPE1_PSIZE 25
  29 /* Type-4 route should be either 23 or 35 bytes
  30  *  RD (8), ESI (10), ip-len (1), ip (4 or 16)
  31  */
  32 #define BGP_EVPN_TYPE4_V4_PSIZE 23
  33 #define BGP_EVPN_TYPE4_V6_PSIZE 34
  34
  35 RB_HEAD(bgp_es_evi_rb_head, bgp_evpn_es_evi);
  36 RB_PROTOTYPE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node,
  37                 bgp_es_evi_rb_cmp);
  38 /*
  39  * Hash table of EVIs. Right now, the only type of EVI supported is with
  40  * VxLAN encapsulation, hence each EVI corresponds to a L2 VNI.
  41  * The VNIs are not "created" through BGP but through some other interface
  42  * on the system. This table stores VNIs that BGP comes to know as present
  43  * on the system (through interaction with zebra) as well as pre-configured
  44  * VNIs (which need to be defined in the system to become "live").
  45  */
  46 struct bgpevpn {
  47         vni_t vni;
  48         vrf_id_t tenant_vrf_id;
  49         ifindex_t svi_ifindex;
  50         uint32_t flags;
  51 #define VNI_FLAG_CFGD              0x1  /* VNI is user configured */
  52 #define VNI_FLAG_LIVE              0x2  /* VNI is "live" */
  53 #define VNI_FLAG_RD_CFGD           0x4  /* RD is user configured. */
  54 #define VNI_FLAG_IMPRT_CFGD        0x8  /* Import RT is user configured */
  55 #define VNI_FLAG_EXPRT_CFGD        0x10 /* Export RT is user configured */
  56 #define VNI_FLAG_USE_TWO_LABELS    0x20 /* Attach both L2-VNI and L3-VNI if
  57                                            needed for this VPN */
  58
  59         struct bgp *bgp_vrf; /* back pointer to the vrf instance */
  60
  61                                            /* Flag to indicate if we are
  62                                             * advertising the g/w mac ip for
  63                                             * this VNI*/
  64         uint8_t advertise_gw_macip;
  65
  66         /* Flag to indicate if we are
  67          * advertising subnet for this VNI */
  68         uint8_t advertise_subnet;
  69
  70         /* Flag to indicate if we are advertising the svi mac ip for this VNI*/
  71         uint8_t advertise_svi_macip;
  72
  73         /* Id for deriving the RD
  74          * automatically for this VNI */
  75         uint16_t rd_id;
  76
  77         /* RD for this VNI. */
  78         struct prefix_rd prd;
  79         char *prd_pretty;
  80
  81         /* Route type 3 field */
  82         struct in_addr originator_ip;
  83
  84         /* PIM-SM MDT group for BUM flooding */
  85         struct in_addr mcast_grp;
  86
  87         /* Import and Export RTs. */
  88         struct list *import_rtl;
  89         struct list *export_rtl;
  90
  91         /*
  92          * EVPN route that uses gateway IP overlay index as its nexthop
  93          * needs to do a recursive lookup.
  94          * A remote MAC/IP entry should be present for the gateway IP.
  95          * Maintain a hash of the addresses received via remote MAC/IP routes
  96          * for efficient gateway IP recursive lookup in this EVI
  97          */
  98         struct hash *remote_ip_hash;
  99
 100         /* Route tables for EVPN routes for
 101          * this VNI. */
 102         struct bgp_table *ip_table;
 103         struct bgp_table *mac_table;
 104
 105         /* RB tree of ES-EVIs */
 106         struct bgp_es_evi_rb_head es_evi_rb_tree;
 107
 108         /* List of local ESs */
 109         struct list *local_es_evi_list;
 110
 111         QOBJ_FIELDS;
 112 };
 113
 114 DECLARE_QOBJ_TYPE(bgpevpn);
 115
 116 /* Mapping of Import RT to VNIs.
 117  * The Import RTs of all VNIs are maintained in a hash table with each
 118  * RT linking to all VNIs that will import routes matching this RT.
 119  */
 120 struct irt_node {
 121         /* RT */
 122         struct ecommunity_val rt;
 123
 124         /* List of VNIs importing routes matching this RT. */
 125         struct list *vnis;
 126 };
 127
 128 /* Mapping of Import RT to VRFs.
 129  * The Import RTs of all VRFss are maintained in a hash table with each
 130  * RT linking to all VRFs that will import routes matching this RT.
 131  */
 132 struct vrf_irt_node {
 133         /* RT */
 134         struct ecommunity_val rt;
 135
 136         /* List of VNIs importing routes matching this RT. */
 137         struct list *vrfs;
 138 };
 139
 140
 141 #define RT_TYPE_IMPORT 1
 142 #define RT_TYPE_EXPORT 2
 143 #define RT_TYPE_BOTH   3
 144
 145 #define EVPN_DAD_DEFAULT_TIME 180 /* secs */
 146 #define EVPN_DAD_DEFAULT_MAX_MOVES 5 /* default from RFC 7432 */
 147 #define EVPN_DAD_DEFAULT_AUTO_RECOVERY_TIME 1800 /* secs */
 148
 149 struct bgp_evpn_info {
 150         /* enable disable dup detect */
 151         bool dup_addr_detect;
 152
 153         /* Detection time(M) */
 154         int dad_time;
 155         /* Detection max moves(N) */
 156         uint32_t dad_max_moves;
 157         /* Permanent freeze */
 158         bool dad_freeze;
 159         /* Recovery time */
 160         uint32_t dad_freeze_time;
 161
 162         /* EVPN enable - advertise svi macip routes */
 163         int advertise_svi_macip;
 164
 165         /* PIP feature knob */
 166         bool advertise_pip;
 167         /* PIP IP (sys ip) */
 168         struct in_addr pip_ip;
 169         struct in_addr pip_ip_static;
 170         /* PIP MAC (sys MAC) */
 171         struct ethaddr pip_rmac;
 172         struct ethaddr pip_rmac_static;
 173         struct ethaddr pip_rmac_zebra;
 174         bool is_anycast_mac;
 175 };
 176
 177 /* This structure defines an entry in remote_ip_hash */
 178 struct evpn_remote_ip {
 179         struct ipaddr addr;
 180         struct list *macip_path_list;
 181 };
 182
 183 /*
 184  * Wrapper struct for l3 RT's
 185  */
 186 struct vrf_route_target {
 187         /* flags based on config to determine how RTs are handled */
 188         uint8_t flags;
 189 #define BGP_VRF_RT_AUTO (1 << 0)
 190 #define BGP_VRF_RT_WILD (1 << 1)
 191
 192         struct ecommunity *ecom;
 193 };
 194
 195 static inline int is_vrf_rd_configured(struct bgp *bgp_vrf)
 196 {
 197         return (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_RD_CFGD));
 198 }
 199
 200 static inline int bgp_evpn_vrf_rd_matches_existing(struct bgp *bgp_vrf,
 201                                                    struct prefix_rd *prd)
 202 {
 203         return (memcmp(&bgp_vrf->vrf_prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
 204 }
 205
 206 static inline vni_t bgpevpn_get_l3vni(struct bgpevpn *vpn)
 207 {
 208         return vpn->bgp_vrf ? vpn->bgp_vrf->l3vni : 0;
 209 }
 210
 211 static inline void bgpevpn_get_rmac(struct bgpevpn *vpn, struct ethaddr *rmac)
 212 {
 213         memset(rmac, 0, sizeof(struct ethaddr));
 214         if (!vpn->bgp_vrf)
 215                 return;
 216         memcpy(rmac, &vpn->bgp_vrf->rmac, sizeof(struct ethaddr));
 217 }
 218
 219 static inline struct list *bgpevpn_get_vrf_export_rtl(struct bgpevpn *vpn)
 220 {
 221         if (!vpn->bgp_vrf)
 222                 return NULL;
 223
 224         return vpn->bgp_vrf->vrf_export_rtl;
 225 }
 226
 227 static inline struct list *bgpevpn_get_vrf_import_rtl(struct bgpevpn *vpn)
 228 {
 229         if (!vpn->bgp_vrf)
 230                 return NULL;
 231
 232         return vpn->bgp_vrf->vrf_import_rtl;
 233 }
 234
 235 extern void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn);
 236 extern void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn);
 237
 238 static inline void bgpevpn_unlink_from_l3vni(struct bgpevpn *vpn)
 239 {
 240         /* bail if vpn is not associated to bgp_vrf */
 241         if (!vpn->bgp_vrf)
 242                 return;
 243
 244         UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
 245         listnode_delete(vpn->bgp_vrf->l2vnis, vpn);
 246
 247         bgp_evpn_es_evi_vrf_deref(vpn);
 248
 249         /* remove the backpointer to the vrf instance */
 250         bgp_unlock(vpn->bgp_vrf);
 251         vpn->bgp_vrf = NULL;
 252 }
 253
 254 static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn)
 255 {
 256         struct bgp *bgp_vrf = NULL;
 257
 258         /* bail if vpn is already associated to vrf */
 259         if (vpn->bgp_vrf)
 260                 return;
 261
 262         bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id);
 263         if (!bgp_vrf)
 264                 return;
 265
 266         /* associate the vpn to the bgp_vrf instance */
 267         vpn->bgp_vrf = bgp_lock(bgp_vrf);
 268         listnode_add_sort(bgp_vrf->l2vnis, vpn);
 269
 270         /*
 271          * If L3VNI is configured,
 272          * check if we are advertising two labels for this vpn
 273          */
 274         if (bgp_vrf->l3vni &&
 275             !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY))
 276                 SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
 277
 278         bgp_evpn_es_evi_vrf_ref(vpn);
 279 }
 280
 281 static inline int is_vni_configured(struct bgpevpn *vpn)
 282 {
 283         return (CHECK_FLAG(vpn->flags, VNI_FLAG_CFGD));
 284 }
 285
 286 static inline int is_vni_live(struct bgpevpn *vpn)
 287 {
 288         return (CHECK_FLAG(vpn->flags, VNI_FLAG_LIVE));
 289 }
 290
 291 static inline int is_l3vni_live(struct bgp *bgp_vrf)
 292 {
 293         return (bgp_vrf->l3vni && bgp_vrf->l3vni_svi_ifindex);
 294 }
 295
 296 static inline int is_rd_configured(struct bgpevpn *vpn)
 297 {
 298         return (CHECK_FLAG(vpn->flags, VNI_FLAG_RD_CFGD));
 299 }
 300
 301 static inline int bgp_evpn_rd_matches_existing(struct bgpevpn *vpn,
 302                                                struct prefix_rd *prd)
 303 {
 304         return (memcmp(&vpn->prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
 305 }
 306
 307 static inline int is_import_rt_configured(struct bgpevpn *vpn)
 308 {
 309         return (CHECK_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD));
 310 }
 311
 312 static inline int is_export_rt_configured(struct bgpevpn *vpn)
 313 {
 314         return (CHECK_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD));
 315 }
 316
 317 static inline void encode_es_rt_extcomm(struct ecommunity_val *eval,
 318                                         struct ethaddr *mac)
 319 {
 320         memset(eval, 0, sizeof(struct ecommunity_val));
 321         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 322         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT;
 323         memcpy(&eval->val[2], mac, ETH_ALEN);
 324 }
 325
 326 static inline void encode_df_elect_extcomm(struct ecommunity_val *eval,
 327                                            uint16_t pref)
 328 {
 329         memset(eval, 0, sizeof(*eval));
 330         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 331         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_DF_ELECTION;
 332         eval->val[2] = EVPN_MH_DF_ALG_PREF;
 333         eval->val[6] = (pref >> 8) & 0xff;
 334         eval->val[7] = pref & 0xff;
 335 }
 336
 337 static inline void encode_esi_label_extcomm(struct ecommunity_val *eval,
 338                                         bool single_active)
 339 {
 340         memset(eval, 0, sizeof(struct ecommunity_val));
 341         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 342         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ESI_LABEL;
 343         if (single_active)
 344                 eval->val[2] |= (1 << 0);
 345 }
 346
 347 static inline void encode_rmac_extcomm(struct ecommunity_val *eval,
 348                                        struct ethaddr *rmac)
 349 {
 350         memset(eval, 0, sizeof(*eval));
 351         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 352         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
 353         memcpy(&eval->val[2], rmac, ETH_ALEN);
 354 }
 355
 356 static inline void encode_default_gw_extcomm(struct ecommunity_val *eval)
 357 {
 358         memset(eval, 0, sizeof(*eval));
 359         eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
 360         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_DEF_GW;
 361 }
 362
 363 static inline void encode_mac_mobility_extcomm(int static_mac, uint32_t seq,
 364                                                struct ecommunity_val *eval)
 365 {
 366         memset(eval, 0, sizeof(*eval));
 367         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 368         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY;
 369         if (static_mac)
 370                 eval->val[2] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY;
 371         eval->val[4] = (seq >> 24) & 0xff;
 372         eval->val[5] = (seq >> 16) & 0xff;
 373         eval->val[6] = (seq >> 8) & 0xff;
 374         eval->val[7] = seq & 0xff;
 375 }
 376
 377 static inline void encode_na_flag_extcomm(struct ecommunity_val *eval,
 378                                           uint8_t na_flag, bool proxy)
 379 {
 380         memset(eval, 0, sizeof(*eval));
 381         eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
 382         eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ND;
 383         if (na_flag)
 384                 eval->val[2] |= ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG;
 385         if (proxy)
 386                 eval->val[2] |= ECOMMUNITY_EVPN_SUBTYPE_PROXY_FLAG;
 387 }
 388
 389 static inline void ip_prefix_from_type5_prefix(const struct prefix_evpn *evp,
 390                                                struct prefix *ip)
 391 {
 392         memset(ip, 0, sizeof(struct prefix));
 393         if (is_evpn_prefix_ipaddr_v4(evp)) {
 394                 ip->family = AF_INET;
 395                 ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
 396                 memcpy(&(ip->u.prefix4), &(evp->prefix.prefix_addr.ip.ip),
 397                        IPV4_MAX_BYTELEN);
 398         } else if (is_evpn_prefix_ipaddr_v6(evp)) {
 399                 ip->family = AF_INET6;
 400                 ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
 401                 memcpy(&(ip->u.prefix6), &(evp->prefix.prefix_addr.ip.ip),
 402                        IPV6_MAX_BYTELEN);
 403         }
 404 }
 405
 406 static inline int is_evpn_prefix_default(const struct prefix *evp)
 407 {
 408         if (evp->family != AF_EVPN)
 409                 return 0;
 410
 411         return ((evp->u.prefix_evpn.prefix_addr.ip_prefix_length  == 0) ?
 412                 1 : 0);
 413 }
 414
 415 static inline void ip_prefix_from_type2_prefix(const struct prefix_evpn *evp,
 416                                                struct prefix *ip)
 417 {
 418         memset(ip, 0, sizeof(struct prefix));
 419         if (is_evpn_prefix_ipaddr_v4(evp)) {
 420                 ip->family = AF_INET;
 421                 ip->prefixlen = IPV4_MAX_BITLEN;
 422                 memcpy(&(ip->u.prefix4), &(evp->prefix.macip_addr.ip.ip),
 423                        IPV4_MAX_BYTELEN);
 424         } else if (is_evpn_prefix_ipaddr_v6(evp)) {
 425                 ip->family = AF_INET6;
 426                 ip->prefixlen = IPV6_MAX_BITLEN;
 427                 memcpy(&(ip->u.prefix6), &(evp->prefix.macip_addr.ip.ip),
 428                        IPV6_MAX_BYTELEN);
 429         }
 430 }
 431
 432 static inline void ip_prefix_from_evpn_prefix(const struct prefix_evpn *evp,
 433                                               struct prefix *ip)
 434 {
 435         if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)
 436                 ip_prefix_from_type2_prefix(evp, ip);
 437         else if (evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)
 438                 ip_prefix_from_type5_prefix(evp, ip);
 439 }
 440
 441 static inline void build_evpn_type2_prefix(struct prefix_evpn *p,
 442                                            struct ethaddr *mac,
 443                                            struct ipaddr *ip)
 444 {
 445         memset(p, 0, sizeof(struct prefix_evpn));
 446         p->family = AF_EVPN;
 447         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 448         p->prefix.route_type = BGP_EVPN_MAC_IP_ROUTE;
 449         memcpy(&p->prefix.macip_addr.mac.octet, mac->octet, ETH_ALEN);
 450         p->prefix.macip_addr.ip.ipa_type = IPADDR_NONE;
 451         memcpy(&p->prefix.macip_addr.ip, ip, sizeof(*ip));
 452 }
 453
 454 static inline void
 455 build_type5_prefix_from_ip_prefix(struct prefix_evpn *evp,
 456                                   const struct prefix *ip_prefix)
 457 {
 458         struct ipaddr ip;
 459
 460         memset(&ip, 0, sizeof(struct ipaddr));
 461         if (ip_prefix->family == AF_INET) {
 462                 ip.ipa_type = IPADDR_V4;
 463                 memcpy(&ip.ipaddr_v4, &ip_prefix->u.prefix4,
 464                        sizeof(struct in_addr));
 465         } else {
 466                 ip.ipa_type = IPADDR_V6;
 467                 memcpy(&ip.ipaddr_v6, &ip_prefix->u.prefix6,
 468                        sizeof(struct in6_addr));
 469         }
 470
 471         memset(evp, 0, sizeof(struct prefix_evpn));
 472         evp->family = AF_EVPN;
 473         evp->prefixlen = EVPN_ROUTE_PREFIXLEN;
 474         evp->prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE;
 475         evp->prefix.prefix_addr.ip_prefix_length = ip_prefix->prefixlen;
 476         evp->prefix.prefix_addr.ip.ipa_type = ip.ipa_type;
 477         memcpy(&evp->prefix.prefix_addr.ip, &ip, sizeof(struct ipaddr));
 478 }
 479
 480 static inline void build_evpn_type3_prefix(struct prefix_evpn *p,
 481                                            struct in_addr originator_ip)
 482 {
 483         memset(p, 0, sizeof(struct prefix_evpn));
 484         p->family = AF_EVPN;
 485         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 486         p->prefix.route_type = BGP_EVPN_IMET_ROUTE;
 487         p->prefix.imet_addr.ip.ipa_type = IPADDR_V4;
 488         p->prefix.imet_addr.ip.ipaddr_v4 = originator_ip;
 489 }
 490
 491 static inline void build_evpn_type4_prefix(struct prefix_evpn *p,
 492                                            esi_t *esi,
 493                                            struct in_addr originator_ip)
 494 {
 495         memset(p, 0, sizeof(struct prefix_evpn));
 496         p->family = AF_EVPN;
 497         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 498         p->prefix.route_type = BGP_EVPN_ES_ROUTE;
 499         p->prefix.es_addr.ip_prefix_length = IPV4_MAX_BITLEN;
 500         p->prefix.es_addr.ip.ipa_type = IPADDR_V4;
 501         p->prefix.es_addr.ip.ipaddr_v4 = originator_ip;
 502         memcpy(&p->prefix.es_addr.esi, esi, sizeof(esi_t));
 503 }
 504
 505 static inline void build_evpn_type1_prefix(struct prefix_evpn *p,
 506                 uint32_t eth_tag,
 507                 esi_t *esi,
 508                 struct in_addr originator_ip)
 509 {
 510         memset(p, 0, sizeof(struct prefix_evpn));
 511         p->family = AF_EVPN;
 512         p->prefixlen = EVPN_ROUTE_PREFIXLEN;
 513         p->prefix.route_type = BGP_EVPN_AD_ROUTE;
 514         p->prefix.ead_addr.eth_tag = eth_tag;
 515         p->prefix.ead_addr.ip.ipa_type = IPADDR_V4;
 516         p->prefix.ead_addr.ip.ipaddr_v4 = originator_ip;
 517         memcpy(&p->prefix.ead_addr.esi, esi, sizeof(esi_t));
 518 }
 519
 520 static inline void evpn_type1_prefix_global_copy(struct prefix_evpn *global_p,
 521                 const struct prefix_evpn *vni_p)
 522 {
 523         memcpy(global_p, vni_p, sizeof(*global_p));
 524         global_p->prefix.ead_addr.ip.ipa_type = 0;
 525         global_p->prefix.ead_addr.ip.ipaddr_v4.s_addr = INADDR_ANY;
 526         global_p->prefix.ead_addr.frag_id = 0;
 527 }
 528
 529 /* EAD prefix in the global table doesn't include the VTEP-IP so
 530  * we need to create a different copy for the VNI
 531  */
 532 static inline struct prefix_evpn *
 533 evpn_type1_prefix_vni_ip_copy(struct prefix_evpn *vni_p,
 534                               const struct prefix_evpn *global_p,
 535                               struct in_addr originator_ip)
 536 {
 537         memcpy(vni_p, global_p, sizeof(*vni_p));
 538         vni_p->prefix.ead_addr.ip.ipa_type = IPADDR_V4;
 539         vni_p->prefix.ead_addr.ip.ipaddr_v4 = originator_ip;
 540
 541         return vni_p;
 542 }
 543
 544 static inline void evpn_type2_prefix_global_copy(
 545         struct prefix_evpn *global_p, const struct prefix_evpn *vni_p,
 546         const struct ethaddr *mac, const struct ipaddr *ip)
 547 {
 548         memcpy(global_p, vni_p, sizeof(*global_p));
 549
 550         if (mac)
 551                 global_p->prefix.macip_addr.mac = *mac;
 552
 553         if (ip)
 554                 global_p->prefix.macip_addr.ip = *ip;
 555 }
 556
 557 static inline void
 558 evpn_type2_prefix_vni_ip_copy(struct prefix_evpn *vni_p,
 559                               const struct prefix_evpn *global_p)
 560 {
 561         memcpy(vni_p, global_p, sizeof(*vni_p));
 562         memset(&vni_p->prefix.macip_addr.mac, 0, sizeof(struct ethaddr));
 563 }
 564
 565 static inline void
 566 evpn_type2_prefix_vni_mac_copy(struct prefix_evpn *vni_p,
 567                                const struct prefix_evpn *global_p)
 568 {
 569         memcpy(vni_p, global_p, sizeof(*vni_p));
 570         memset(&vni_p->prefix.macip_addr.ip, 0, sizeof(struct ipaddr));
 571 }
 572
 573 /* Get MAC of path_info prefix */
 574 static inline struct ethaddr *
 575 evpn_type2_path_info_get_mac(const struct bgp_path_info *local_pi)
 576 {
 577         assert(local_pi->extra);
 578         return &local_pi->extra->vni_info.mac;
 579 }
 580
 581 /* Get IP of path_info prefix */
 582 static inline struct ipaddr *
 583 evpn_type2_path_info_get_ip(const struct bgp_path_info *local_pi)
 584 {
 585         assert(local_pi->extra);
 586         return &local_pi->extra->vni_info.ip;
 587 }
 588
 589 /* Set MAC of path_info prefix */
 590 static inline void evpn_type2_path_info_set_mac(struct bgp_path_info *local_pi,
 591                                                 const struct ethaddr mac)
 592 {
 593         assert(local_pi->extra);
 594         local_pi->extra->vni_info.mac = mac;
 595 }
 596
 597 /* Set IP of path_info prefix */
 598 static inline void evpn_type2_path_info_set_ip(struct bgp_path_info *local_pi,
 599                                                const struct ipaddr ip)
 600 {
 601         assert(local_pi->extra);
 602         local_pi->extra->vni_info.ip = ip;
 603 }
 604
 605 /* Is the IP empty for the RT's dest? */
 606 static inline bool is_evpn_type2_dest_ipaddr_none(const struct bgp_dest *dest)
 607 {
 608         const struct prefix_evpn *evp =
 609                 (const struct prefix_evpn *)bgp_dest_get_prefix(dest);
 610
 611         assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE);
 612         return is_evpn_prefix_ipaddr_none(evp);
 613 }
 614
 615 static inline int evpn_default_originate_set(struct bgp *bgp, afi_t afi,
 616                                              safi_t safi)
 617 {
 618         if (afi == AFI_IP &&
 619             CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
 620                        BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4))
 621                 return 1;
 622         else if (afi == AFI_IP6 &&
 623                  CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
 624                             BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6))
 625                 return 1;
 626         return 0;
 627 }
 628
 629 static inline void es_get_system_mac(esi_t *esi,
 630                                      struct ethaddr *mac)
 631 {
 632         /*
 633          * for type-1 and type-3 ESIs,
 634          * the system mac starts at val[1]
 635          */
 636         memcpy(mac, &esi->val[1], ETH_ALEN);
 637 }
 638
 639 static inline bool bgp_evpn_is_svi_macip_enabled(struct bgpevpn *vpn)
 640 {
 641         struct bgp *bgp_evpn = NULL;
 642
 643         bgp_evpn = bgp_get_evpn();
 644
 645         return (bgp_evpn->evpn_info->advertise_svi_macip ||
 646                 vpn->advertise_svi_macip);
 647 }
 648
 649 static inline bool bgp_evpn_is_path_local(struct bgp *bgp,
 650                 struct bgp_path_info *pi)
 651 {
 652         return (pi->peer == bgp->peer_self
 653                         && pi->type == ZEBRA_ROUTE_BGP
 654                         && pi->sub_type == BGP_ROUTE_STATIC);
 655 }
 656
 657 extern struct zclient *zclient;
 658
 659 extern void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf,
 660                                                      afi_t afi, safi_t safi,
 661                                                      bool add);
 662 extern void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl,
 663                                 bool is_l3);
 664 extern void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf,
 665                                                  struct ecommunity *ecomadd);
 666 extern void bgp_evpn_configure_export_auto_rt_for_vrf(struct bgp *bgp_vrf);
 667 extern void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf,
 668                                                    struct ecommunity *ecomdel);
 669 extern void bgp_evpn_unconfigure_export_auto_rt_for_vrf(struct bgp *bgp_vrf);
 670 extern void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf,
 671                                                  struct ecommunity *ecomadd,
 672                                                  bool is_wildcard);
 673 extern void bgp_evpn_configure_import_auto_rt_for_vrf(struct bgp *bgp_vrf);
 674 extern void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf,
 675                                                    struct ecommunity *ecomdel);
 676 extern void bgp_evpn_unconfigure_import_auto_rt_for_vrf(struct bgp *bgp_vrf);
 677 extern int bgp_evpn_handle_export_rt_change(struct bgp *bgp,
 678                                             struct bgpevpn *vpn);
 679 extern void bgp_evpn_handle_autort_change(struct bgp *bgp);
 680 extern void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw);
 681 extern void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn,
 682                                       int withdraw);
 683 extern int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn);
 684 extern int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn);
 685 extern void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf);
 686 extern void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf);
 687 extern void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn);
 688 extern void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp,
 689                                             struct bgpevpn *vpn);
 690 extern void bgp_evpn_derive_auto_rt_import(struct bgp *bgp,
 691                                            struct bgpevpn *vpn);
 692 extern void bgp_evpn_derive_auto_rt_export(struct bgp *bgp,
 693                                            struct bgpevpn *vpn);
 694 extern void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn);
 695 extern void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp);
 696 extern struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni);
 697 extern struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni,
 698                 struct in_addr originator_ip,
 699                 vrf_id_t tenant_vrf_id,
 700                 struct in_addr mcast_grp,
 701                 ifindex_t svi_ifindex);
 702 extern void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn);
 703 extern bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni);
 704 extern int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn);
 705 extern void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi,
 706                                     struct bgp_dest *dest,
 707                                     struct bgp_path_info **pi);
 708 int vni_list_cmp(void *p1, void *p2);
 709 extern int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn,
 710                                      struct bgp_dest *dest);
 711 extern struct bgp_dest *
 712 bgp_evpn_global_node_get(struct bgp_table *table, afi_t afi, safi_t safi,
 713                          const struct prefix_evpn *evp, struct prefix_rd *prd,
 714                          const struct bgp_path_info *local_pi);
 715 extern struct bgp_dest *bgp_evpn_global_node_lookup(
 716         struct bgp_table *table, safi_t safi, const struct prefix_evpn *evp,
 717         struct prefix_rd *prd, const struct bgp_path_info *local_pi);
 718 extern struct bgp_dest *
 719 bgp_evpn_vni_ip_node_get(struct bgp_table *const table,
 720                          const struct prefix_evpn *evp,
 721                          const struct bgp_path_info *parent_pi);
 722 extern struct bgp_dest *
 723 bgp_evpn_vni_ip_node_lookup(const struct bgp_table *const table,
 724                             const struct prefix_evpn *evp,
 725                             const struct bgp_path_info *parent_pi);
 726 extern struct bgp_dest *
 727 bgp_evpn_vni_mac_node_get(struct bgp_table *const table,
 728                           const struct prefix_evpn *evp,
 729                           const struct bgp_path_info *parent_pi);
 730 extern struct bgp_dest *
 731 bgp_evpn_vni_mac_node_lookup(const struct bgp_table *const table,
 732                              const struct prefix_evpn *evp,
 733                              const struct bgp_path_info *parent_pi);
 734 extern struct bgp_dest *
 735 bgp_evpn_vni_node_get(struct bgpevpn *vpn, const struct prefix_evpn *p,
 736                       const struct bgp_path_info *parent_pi);
 737 extern struct bgp_dest *
 738 bgp_evpn_vni_node_lookup(const struct bgpevpn *vpn, const struct prefix_evpn *p,
 739                          const struct bgp_path_info *parent_pi);
 740
 741 extern void bgp_evpn_import_route_in_vrfs(struct bgp_path_info *pi, int import);
 742 extern void bgp_evpn_update_type2_route_entry(struct bgp *bgp,
 743                                               struct bgpevpn *vpn,
 744                                               struct bgp_node *rn,
 745                                               struct bgp_path_info *local_pi,
 746                                               const char *caller);
 747 extern int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf,
 748                                                      struct bgp_path_info *pi,
 749                                                      int install);
 750 extern void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import);
 751 extern void bgp_evpn_xxport_delete_ecomm(void *val);
 752 extern int bgp_evpn_route_target_cmp(struct ecommunity *ecom1,
 753                                      struct ecommunity *ecom2);
 754 #endif /* _BGP_EVPN_PRIVATE_H */