lib/zclient.h

   1 /* Zebra's client header.
   2  * Copyright (C) 1999 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
   8  * the Free Software Foundation; either version 2, or (at your option)
   9  * any 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 _ZEBRA_ZCLIENT_H
  22 #define _ZEBRA_ZCLIENT_H
  23
  24 /* For struct zapi_route. */
  25 #include "prefix.h"
  26
  27 /* For struct interface and struct connected. */
  28 #include "if.h"
  29
  30 /* For vrf_bitmap_t. */
  31 #include "vrf.h"
  32
  33 /* For union g_addr */
  34 #include "nexthop.h"
  35
  36 /* For union pw_protocol_fields */
  37 #include "pw.h"
  38
  39 /* For input/output buffer to zebra. */
  40 #define ZEBRA_MAX_PACKET_SIZ          16384
  41
  42 /* Zebra header size. */
  43 #define ZEBRA_HEADER_SIZE             10
  44
  45 /* special socket path name to use TCP
  46  * @ is used as first character because that's abstract socket names on Linux
  47  */
  48 #define ZAPI_TCP_PATHNAME             "@tcp"
  49
  50 extern struct sockaddr_storage zclient_addr;
  51 extern socklen_t zclient_addr_len;
  52
  53 /* Zebra message types. */
  54 typedef enum {
  55         ZEBRA_INTERFACE_ADD,
  56         ZEBRA_INTERFACE_DELETE,
  57         ZEBRA_INTERFACE_ADDRESS_ADD,
  58         ZEBRA_INTERFACE_ADDRESS_DELETE,
  59         ZEBRA_INTERFACE_UP,
  60         ZEBRA_INTERFACE_DOWN,
  61         ZEBRA_INTERFACE_SET_MASTER,
  62         ZEBRA_ROUTE_ADD,
  63         ZEBRA_ROUTE_DELETE,
  64         ZEBRA_ROUTE_NOTIFY_OWNER,
  65         ZEBRA_IPV4_ROUTE_ADD,
  66         ZEBRA_IPV4_ROUTE_DELETE,
  67         ZEBRA_IPV6_ROUTE_ADD,
  68         ZEBRA_IPV6_ROUTE_DELETE,
  69         ZEBRA_REDISTRIBUTE_ADD,
  70         ZEBRA_REDISTRIBUTE_DELETE,
  71         ZEBRA_REDISTRIBUTE_DEFAULT_ADD,
  72         ZEBRA_REDISTRIBUTE_DEFAULT_DELETE,
  73         ZEBRA_ROUTER_ID_ADD,
  74         ZEBRA_ROUTER_ID_DELETE,
  75         ZEBRA_ROUTER_ID_UPDATE,
  76         ZEBRA_HELLO,
  77         ZEBRA_NEXTHOP_REGISTER,
  78         ZEBRA_NEXTHOP_UNREGISTER,
  79         ZEBRA_NEXTHOP_UPDATE,
  80         ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
  81         ZEBRA_INTERFACE_NBR_ADDRESS_DELETE,
  82         ZEBRA_INTERFACE_BFD_DEST_UPDATE,
  83         ZEBRA_IMPORT_ROUTE_REGISTER,
  84         ZEBRA_IMPORT_ROUTE_UNREGISTER,
  85         ZEBRA_IMPORT_CHECK_UPDATE,
  86         ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD,
  87         ZEBRA_BFD_DEST_REGISTER,
  88         ZEBRA_BFD_DEST_DEREGISTER,
  89         ZEBRA_BFD_DEST_UPDATE,
  90         ZEBRA_BFD_DEST_REPLAY,
  91         ZEBRA_REDISTRIBUTE_ROUTE_ADD,
  92         ZEBRA_REDISTRIBUTE_ROUTE_DEL,
  93         ZEBRA_VRF_UNREGISTER,
  94         ZEBRA_VRF_ADD,
  95         ZEBRA_VRF_DELETE,
  96         ZEBRA_VRF_LABEL,
  97         ZEBRA_INTERFACE_VRF_UPDATE,
  98         ZEBRA_BFD_CLIENT_REGISTER,
  99         ZEBRA_INTERFACE_ENABLE_RADV,
 100         ZEBRA_INTERFACE_DISABLE_RADV,
 101         ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB,
 102         ZEBRA_INTERFACE_LINK_PARAMS,
 103         ZEBRA_MPLS_LABELS_ADD,
 104         ZEBRA_MPLS_LABELS_DELETE,
 105         ZEBRA_IPMR_ROUTE_STATS,
 106         ZEBRA_LABEL_MANAGER_CONNECT,
 107         ZEBRA_GET_LABEL_CHUNK,
 108         ZEBRA_RELEASE_LABEL_CHUNK,
 109         ZEBRA_FEC_REGISTER,
 110         ZEBRA_FEC_UNREGISTER,
 111         ZEBRA_FEC_UPDATE,
 112         ZEBRA_ADVERTISE_DEFAULT_GW,
 113         ZEBRA_ADVERTISE_SUBNET,
 114         ZEBRA_ADVERTISE_ALL_VNI,
 115         ZEBRA_VNI_ADD,
 116         ZEBRA_VNI_DEL,
 117         ZEBRA_L3VNI_ADD,
 118         ZEBRA_L3VNI_DEL,
 119         ZEBRA_REMOTE_VTEP_ADD,
 120         ZEBRA_REMOTE_VTEP_DEL,
 121         ZEBRA_MACIP_ADD,
 122         ZEBRA_MACIP_DEL,
 123         ZEBRA_IP_PREFIX_ROUTE_ADD,
 124         ZEBRA_IP_PREFIX_ROUTE_DEL,
 125         ZEBRA_REMOTE_MACIP_ADD,
 126         ZEBRA_REMOTE_MACIP_DEL,
 127         ZEBRA_PW_ADD,
 128         ZEBRA_PW_DELETE,
 129         ZEBRA_PW_SET,
 130         ZEBRA_PW_UNSET,
 131         ZEBRA_PW_STATUS_UPDATE,
 132         ZEBRA_RULE_ADD,
 133         ZEBRA_RULE_DELETE,
 134         ZEBRA_RULE_NOTIFY_OWNER,
 135         ZEBRA_TABLE_MANAGER_CONNECT,
 136         ZEBRA_GET_TABLE_CHUNK,
 137         ZEBRA_RELEASE_TABLE_CHUNK,
 138 } zebra_message_types_t;
 139
 140 struct redist_proto {
 141         uint8_t enabled;
 142         struct list *instances;
 143 };
 144
 145 /* Structure for the zebra client. */
 146 struct zclient {
 147         /* The thread master we schedule ourselves on */
 148         struct thread_master *master;
 149
 150         /* Priviledges to change socket values */
 151         struct zebra_privs_t *privs;
 152
 153         /* Do we care about failure events for route install? */
 154         bool receive_notify;
 155
 156         /* Socket to zebra daemon. */
 157         int sock;
 158
 159         /* Connection failure count. */
 160         int fail;
 161
 162         /* Input buffer for zebra message. */
 163         struct stream *ibuf;
 164
 165         /* Output buffer for zebra message. */
 166         struct stream *obuf;
 167
 168         /* Buffer of data waiting to be written to zebra. */
 169         struct buffer *wb;
 170
 171         /* Read and connect thread. */
 172         struct thread *t_read;
 173         struct thread *t_connect;
 174
 175         /* Thread to write buffered data to zebra. */
 176         struct thread *t_write;
 177
 178         /* Redistribute information. */
 179         uint8_t redist_default; /* clients protocol */
 180         unsigned short instance;
 181         struct redist_proto mi_redist[AFI_MAX][ZEBRA_ROUTE_MAX];
 182         vrf_bitmap_t redist[AFI_MAX][ZEBRA_ROUTE_MAX];
 183
 184         /* Redistribute defauilt. */
 185         vrf_bitmap_t default_information;
 186
 187         /* Pointer to the callback functions. */
 188         void (*zebra_connected)(struct zclient *);
 189         int (*router_id_update)(int, struct zclient *, uint16_t, vrf_id_t);
 190         int (*interface_add)(int, struct zclient *, uint16_t, vrf_id_t);
 191         int (*interface_delete)(int, struct zclient *, uint16_t, vrf_id_t);
 192         int (*interface_up)(int, struct zclient *, uint16_t, vrf_id_t);
 193         int (*interface_down)(int, struct zclient *, uint16_t, vrf_id_t);
 194         int (*interface_address_add)(int, struct zclient *, uint16_t, vrf_id_t);
 195         int (*interface_address_delete)(int, struct zclient *, uint16_t,
 196                                         vrf_id_t);
 197         int (*interface_link_params)(int, struct zclient *, uint16_t);
 198         int (*interface_bfd_dest_update)(int, struct zclient *, uint16_t,
 199                                          vrf_id_t);
 200         int (*interface_nbr_address_add)(int, struct zclient *, uint16_t,
 201                                          vrf_id_t);
 202         int (*interface_nbr_address_delete)(int, struct zclient *, uint16_t,
 203                                             vrf_id_t);
 204         int (*interface_vrf_update)(int, struct zclient *, uint16_t, vrf_id_t);
 205         int (*nexthop_update)(int, struct zclient *, uint16_t, vrf_id_t);
 206         int (*import_check_update)(int, struct zclient *, uint16_t, vrf_id_t);
 207         int (*bfd_dest_replay)(int, struct zclient *, uint16_t, vrf_id_t);
 208         int (*redistribute_route_add)(int, struct zclient *, uint16_t,
 209                                       vrf_id_t);
 210         int (*redistribute_route_del)(int, struct zclient *, uint16_t,
 211                                       vrf_id_t);
 212         int (*fec_update)(int, struct zclient *, uint16_t);
 213         int (*local_vni_add)(int, struct zclient *, uint16_t, vrf_id_t);
 214         int (*local_vni_del)(int, struct zclient *, uint16_t, vrf_id_t);
 215         int (*local_l3vni_add)(int, struct zclient *, uint16_t, vrf_id_t);
 216         int (*local_l3vni_del)(int, struct zclient *, uint16_t, vrf_id_t);
 217         void (*local_ip_prefix_add)(int, struct zclient *, uint16_t, vrf_id_t);
 218         void (*local_ip_prefix_del)(int, struct zclient *, uint16_t, vrf_id_t);
 219         int (*local_macip_add)(int, struct zclient *, uint16_t, vrf_id_t);
 220         int (*local_macip_del)(int, struct zclient *, uint16_t, vrf_id_t);
 221         int (*pw_status_update)(int, struct zclient *, uint16_t, vrf_id_t);
 222         int (*route_notify_owner)(int command, struct zclient *zclient,
 223                                   uint16_t length, vrf_id_t vrf_id);
 224         int (*rule_notify_owner)(int command, struct zclient *zclient,
 225                                  uint16_t length, vrf_id_t vrf_id);
 226 };
 227
 228 /* Zebra API message flag. */
 229 #define ZAPI_MESSAGE_NEXTHOP  0x01
 230 #define ZAPI_MESSAGE_DISTANCE 0x02
 231 #define ZAPI_MESSAGE_METRIC   0x04
 232 #define ZAPI_MESSAGE_TAG      0x08
 233 #define ZAPI_MESSAGE_MTU      0x10
 234 #define ZAPI_MESSAGE_SRCPFX   0x20
 235 #define ZAPI_MESSAGE_LABEL    0x40
 236 /*
 237  * This should only be used by a DAEMON that needs to communicate
 238  * the table being used is not in the VRF.  You must pass the
 239  * default vrf, else this will be ignored.
 240  */
 241 #define ZAPI_MESSAGE_TABLEID  0x80
 242
 243 #define ZSERV_VERSION 5
 244 /* Zserv protocol message header */
 245 struct zmsghdr {
 246         uint16_t length;
 247         /* Always set to 255 in new zserv */
 248         uint8_t marker;
 249         uint8_t version;
 250         vrf_id_t vrf_id;
 251         uint16_t command;
 252 };
 253
 254 struct zapi_nexthop {
 255         enum nexthop_types_t type;
 256         vrf_id_t vrf_id;
 257         ifindex_t ifindex;
 258         union {
 259                 union g_addr gate;
 260                 enum blackhole_type bh_type;
 261         };
 262
 263         /* MPLS labels for BGP-LU or Segment Routing */
 264         uint8_t label_num;
 265         mpls_label_t labels[MPLS_MAX_LABELS];
 266 };
 267
 268 /*
 269  * Some of these data structures do not map easily to
 270  * a actual data structure size giving different compilers
 271  * and systems.  For those data structures we need
 272  * to use the smallest available stream_getX/putX functions
 273  * to encode/decode.
 274  */
 275 struct zapi_route {
 276         uint8_t type;
 277         unsigned short instance;
 278
 279         uint32_t flags;
 280
 281         uint8_t message;
 282
 283         /*
 284          * This is an enum but we are going to treat it as a uint8_t
 285          * for purpose of encoding/decoding
 286          */
 287         safi_t safi;
 288
 289         struct prefix prefix;
 290         struct prefix_ipv6 src_prefix;
 291
 292         uint16_t nexthop_num;
 293         struct zapi_nexthop nexthops[MULTIPATH_NUM];
 294
 295         uint8_t distance;
 296
 297         uint32_t metric;
 298
 299         route_tag_t tag;
 300
 301         uint32_t mtu;
 302
 303         vrf_id_t vrf_id;
 304
 305         uint32_t tableid;
 306
 307         struct ethaddr rmac;
 308 };
 309
 310 /* Zebra IPv4 route message API. */
 311 struct zapi_ipv4 {
 312         uint8_t type;
 313         unsigned short instance;
 314
 315         uint32_t flags;
 316
 317         uint8_t message;
 318
 319         safi_t safi;
 320
 321         uint8_t nexthop_num;
 322         struct in_addr **nexthop;
 323
 324         uint8_t ifindex_num;
 325         ifindex_t *ifindex;
 326
 327         uint8_t label_num;
 328         unsigned int *label;
 329
 330         uint8_t distance;
 331
 332         uint32_t metric;
 333
 334         route_tag_t tag;
 335
 336         uint32_t mtu;
 337
 338         vrf_id_t vrf_id;
 339 };
 340
 341 struct zapi_pw {
 342         char ifname[IF_NAMESIZE];
 343         ifindex_t ifindex;
 344         int type;
 345         int af;
 346         union g_addr nexthop;
 347         uint32_t local_label;
 348         uint32_t remote_label;
 349         uint8_t flags;
 350         union pw_protocol_fields data;
 351         uint8_t protocol;
 352 };
 353
 354 struct zapi_pw_status {
 355         char ifname[IF_NAMESIZE];
 356         ifindex_t ifindex;
 357         uint32_t status;
 358 };
 359
 360 enum zapi_route_notify_owner {
 361         ZAPI_ROUTE_FAIL_INSTALL,
 362         ZAPI_ROUTE_BETTER_ADMIN_WON,
 363         ZAPI_ROUTE_INSTALLED,
 364         ZAPI_ROUTE_REMOVED,
 365         ZAPI_ROUTE_REMOVE_FAIL,
 366 };
 367
 368 enum zapi_rule_notify_owner {
 369         ZAPI_RULE_FAIL_INSTALL,
 370         ZAPI_RULE_INSTALLED,
 371         ZAPI_RULE_REMOVED,
 372 };
 373
 374 /* Zebra MAC types */
 375 #define ZEBRA_MACIP_TYPE_STICKY                0x01 /* Sticky MAC*/
 376 #define ZEBRA_MACIP_TYPE_GW                    0x02 /* gateway (SVI) mac*/
 377
 378 struct zclient_options {
 379         bool receive_notify;
 380 };
 381
 382 /* Prototypes of zebra client service functions. */
 383 extern struct zclient *zclient_new(struct thread_master *);
 384
 385 /* clang-format off */
 386 #if defined(VERSION_TYPE_DEV) && CONFDATE > 20181101
 387 CPP_NOTICE("zclient_new_notify can take over or zclient_new now");
 388 #endif
 389 /* clang-format on */
 390
 391 extern struct zclient_options zclient_options_default;
 392
 393 extern struct zclient *zclient_new_notify(struct thread_master *m,
 394                                           struct zclient_options *opt);
 395
 396 #define zclient_new(A)                                                         \
 397         zclient_new_notify((A), &zclient_options_default);                     \
 398         CPP_WARN("Please transition to using zclient_new_notify");
 399
 400 extern void zclient_init(struct zclient *, int, unsigned short,
 401                          struct zebra_privs_t *privs);
 402 extern int zclient_start(struct zclient *);
 403 extern void zclient_stop(struct zclient *);
 404 extern void zclient_reset(struct zclient *);
 405 extern void zclient_free(struct zclient *);
 406
 407 extern int zclient_socket_connect(struct zclient *);
 408
 409 extern unsigned short *redist_check_instance(struct redist_proto *,
 410                                              unsigned short);
 411 extern void redist_add_instance(struct redist_proto *, unsigned short);
 412 extern void redist_del_instance(struct redist_proto *, unsigned short);
 413
 414 /*
 415  * Send to zebra that the specified vrf is using label to resolve
 416  * itself for L3VPN's.  Repeated calls of this function with
 417  * different labels will cause an effective update of the
 418  * label for lookup.  If you pass in MPLS_LABEL_NONE
 419  * we will cause a delete action and remove this label pop
 420  * operation.
 421  *
 422  * The underlying AF_MPLS doesn't care about afi's
 423  * but we can make the zebra_vrf keep track of what
 424  * we have installed and play some special games
 425  * to get them both installed.
 426  */
 427 extern void zclient_send_vrf_label(struct zclient *zclient, vrf_id_t vrf_id,
 428                                    afi_t afi, mpls_label_t label,
 429                                    enum lsp_types_t ltype);
 430
 431 extern void zclient_send_reg_requests(struct zclient *, vrf_id_t);
 432 extern void zclient_send_dereg_requests(struct zclient *, vrf_id_t);
 433
 434 extern void zclient_send_interface_radv_req(struct zclient *zclient,
 435                                             vrf_id_t vrf_id,
 436                                             struct interface *ifp, int enable,
 437                                             int ra_interval);
 438
 439 /* Send redistribute command to zebra daemon. Do not update zclient state. */
 440 extern int zebra_redistribute_send(int command, struct zclient *, afi_t,
 441                                    int type, unsigned short instance,
 442                                    vrf_id_t vrf_id);
 443
 444 /* If state has changed, update state and call zebra_redistribute_send. */
 445 extern void zclient_redistribute(int command, struct zclient *, afi_t, int type,
 446                                  unsigned short instance, vrf_id_t vrf_id);
 447
 448 /* If state has changed, update state and send the command to zebra. */
 449 extern void zclient_redistribute_default(int command, struct zclient *,
 450                                          vrf_id_t vrf_id);
 451
 452 /* Send the message in zclient->obuf to the zebra daemon (or enqueue it).
 453    Returns 0 for success or -1 on an I/O error. */
 454 extern int zclient_send_message(struct zclient *);
 455
 456 /* create header for command, length to be filled in by user later */
 457 extern void zclient_create_header(struct stream *, uint16_t, vrf_id_t);
 458 /*
 459  * Read sizeof(struct zmsghdr) bytes from the provided socket and parse the
 460  * received data into the specified fields. If this is successful, read the
 461  * rest of the packet into the provided stream.
 462  *
 463  * s
 464  *    The stream to read into
 465  *
 466  * sock
 467  *    The socket to read from
 468  *
 469  * size
 470  *    Parsed message size will be placed in the pointed-at integer
 471  *
 472  * marker
 473  *    Parsed marker will be placed in the pointed-at byte
 474  *
 475  * version
 476  *    Parsed version will be placed in the pointed-at byte
 477  *
 478  * vrf_id
 479  *    Parsed VRF ID will be placed in the pointed-at vrf_id_t
 480  *
 481  * cmd
 482  *    Parsed command number will be placed in the pointed-at integer
 483  *
 484  * Returns:
 485  *    -1 if:
 486  *    - insufficient data for header was read
 487  *    - a version mismatch was detected
 488  *    - a marker mismatch was detected
 489  *    - header size field specified more data than could be read
 490  */
 491 extern int zclient_read_header(struct stream *s, int sock, uint16_t *size,
 492                                uint8_t *marker, uint8_t *version,
 493                                vrf_id_t *vrf_id, uint16_t *cmd);
 494 /*
 495  * Parse header from ZAPI message stream into struct zmsghdr.
 496  * This function assumes the stream getp points at the first byte of the header.
 497  * If the function is successful then the stream getp will point to the byte
 498  * immediately after the last byte of the header.
 499  *
 500  * zmsg
 501  *    The stream containing the header
 502  *
 503  * hdr
 504  *    The header struct to parse into.
 505  *
 506  * Returns:
 507  *    true if parsing succeeded, false otherwise
 508  */
 509 extern bool zapi_parse_header(struct stream *zmsg, struct zmsghdr *hdr);
 510
 511 extern void zclient_interface_set_master(struct zclient *client,
 512                                          struct interface *master,
 513                                          struct interface *slave);
 514 extern struct interface *zebra_interface_add_read(struct stream *, vrf_id_t);
 515 extern struct interface *zebra_interface_state_read(struct stream *s, vrf_id_t);
 516 extern struct connected *zebra_interface_address_read(int, struct stream *,
 517                                                       vrf_id_t);
 518 extern struct nbr_connected *
 519 zebra_interface_nbr_address_read(int, struct stream *, vrf_id_t);
 520 extern struct interface *zebra_interface_vrf_update_read(struct stream *s,
 521                                                          vrf_id_t vrf_id,
 522                                                          vrf_id_t *new_vrf_id);
 523 extern void zebra_interface_if_set_value(struct stream *, struct interface *);
 524 extern void zebra_router_id_update_read(struct stream *s, struct prefix *rid);
 525
 526 /* clang-format off */
 527 #if defined(VERSION_TYPE_DEV) && CONFDATE > 20180823
 528 CPP_NOTICE("zapi_ipv4_route, zapi_ipv6_route, zapi_ipv4_route_ipv6_nexthop as well as the zapi_ipv4 and zapi_ipv6 data structures should be removed now");
 529 #endif
 530 /* clang-format on */
 531
 532 extern int zapi_ipv4_route(uint8_t, struct zclient *, struct prefix_ipv4 *,
 533                            struct zapi_ipv4 *) __attribute__((deprecated));
 534
 535 extern struct interface *zebra_interface_link_params_read(struct stream *);
 536 extern size_t zebra_interface_link_params_write(struct stream *,
 537                                                 struct interface *);
 538 extern int lm_label_manager_connect(struct zclient *zclient);
 539 extern int lm_get_label_chunk(struct zclient *zclient, uint8_t keep,
 540                               uint32_t chunk_size, uint32_t *start,
 541                               uint32_t *end);
 542 extern int lm_release_label_chunk(struct zclient *zclient, uint32_t start,
 543                                   uint32_t end);
 544 extern int tm_table_manager_connect(struct zclient *zclient);
 545 extern int tm_get_table_chunk(struct zclient *zclient, uint32_t chunk_size,
 546                               uint32_t *start, uint32_t *end);
 547 extern int tm_release_table_chunk(struct zclient *zclient, uint32_t start,
 548                                   uint32_t end);
 549
 550 extern int zebra_send_pw(struct zclient *zclient, int command,
 551                          struct zapi_pw *pw);
 552 extern void zebra_read_pw_status_update(int command, struct zclient *zclient,
 553                                         zebra_size_t length, vrf_id_t vrf_id,
 554                                         struct zapi_pw_status *pw);
 555
 556 /* IPv6 prefix add and delete function prototype. */
 557
 558 struct zapi_ipv6 {
 559         uint8_t type;
 560         unsigned short instance;
 561
 562         uint32_t flags;
 563
 564         uint8_t message;
 565
 566         safi_t safi;
 567
 568         uint8_t nexthop_num;
 569         struct in6_addr **nexthop;
 570
 571         uint8_t ifindex_num;
 572         ifindex_t *ifindex;
 573
 574         uint8_t label_num;
 575         unsigned int *label;
 576
 577         uint8_t distance;
 578
 579         uint32_t metric;
 580
 581         route_tag_t tag;
 582
 583         uint32_t mtu;
 584
 585         vrf_id_t vrf_id;
 586 };
 587
 588 extern int zapi_ipv6_route(uint8_t cmd, struct zclient *zclient,
 589                            struct prefix_ipv6 *p, struct prefix_ipv6 *src_p,
 590                            struct zapi_ipv6 *api) __attribute__((deprecated));
 591 extern int zapi_ipv4_route_ipv6_nexthop(uint8_t, struct zclient *,
 592                                         struct prefix_ipv4 *,
 593                                         struct zapi_ipv6 *)
 594         __attribute__((deprecated));
 595 extern int zclient_route_send(uint8_t, struct zclient *, struct zapi_route *);
 596 extern int zclient_send_rnh(struct zclient *zclient, int command,
 597                             struct prefix *p, bool exact_match,
 598                             vrf_id_t vrf_id);
 599 extern int zapi_route_encode(uint8_t, struct stream *, struct zapi_route *);
 600 extern int zapi_route_decode(struct stream *, struct zapi_route *);
 601 bool zapi_route_notify_decode(struct stream *s, struct prefix *p,
 602                               uint32_t *tableid,
 603                               enum zapi_route_notify_owner *note);
 604 bool zapi_rule_notify_decode(struct stream *s, uint32_t *seqno,
 605                              uint32_t *priority, uint32_t *unique,
 606                              ifindex_t *ifindex,
 607                              enum zapi_rule_notify_owner *note);
 608 extern struct nexthop *nexthop_from_zapi_nexthop(struct zapi_nexthop *znh);
 609 extern bool zapi_nexthop_update_decode(struct stream *s,
 610                                        struct zapi_route *nhr);
 611
 612 static inline void zapi_route_set_blackhole(struct zapi_route *api,
 613                                             enum blackhole_type bh_type)
 614 {
 615         api->nexthop_num = 1;
 616         api->nexthops[0].type = NEXTHOP_TYPE_BLACKHOLE;
 617         api->nexthops[0].vrf_id = VRF_DEFAULT;
 618         api->nexthops[0].bh_type = bh_type;
 619         SET_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP);
 620 };
 621
 622
 623 #endif /* _ZEBRA_ZCLIENT_H */