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_message_types_t;
 136
 137 struct redist_proto {
 138         u_char enabled;
 139         struct list *instances;
 140 };
 141
 142 /* Structure for the zebra client. */
 143 struct zclient {
 144         /* The thread master we schedule ourselves on */
 145         struct thread_master *master;
 146
 147         /* Priviledges to change socket values */
 148         struct zebra_privs_t *privs;
 149
 150         /* Do we care about failure events for route install? */
 151         bool receive_notify;
 152
 153         /* Socket to zebra daemon. */
 154         int sock;
 155
 156         /* Connection failure count. */
 157         int fail;
 158
 159         /* Input buffer for zebra message. */
 160         struct stream *ibuf;
 161
 162         /* Output buffer for zebra message. */
 163         struct stream *obuf;
 164
 165         /* Buffer of data waiting to be written to zebra. */
 166         struct buffer *wb;
 167
 168         /* Read and connect thread. */
 169         struct thread *t_read;
 170         struct thread *t_connect;
 171
 172         /* Thread to write buffered data to zebra. */
 173         struct thread *t_write;
 174
 175         /* Redistribute information. */
 176         u_char redist_default; /* clients protocol */
 177         u_short instance;
 178         struct redist_proto mi_redist[AFI_MAX][ZEBRA_ROUTE_MAX];
 179         vrf_bitmap_t redist[AFI_MAX][ZEBRA_ROUTE_MAX];
 180
 181         /* Redistribute defauilt. */
 182         vrf_bitmap_t default_information;
 183
 184         /* Pointer to the callback functions. */
 185         void (*zebra_connected)(struct zclient *);
 186         int (*router_id_update)(int, struct zclient *, uint16_t, vrf_id_t);
 187         int (*interface_add)(int, struct zclient *, uint16_t, vrf_id_t);
 188         int (*interface_delete)(int, struct zclient *, uint16_t, vrf_id_t);
 189         int (*interface_up)(int, struct zclient *, uint16_t, vrf_id_t);
 190         int (*interface_down)(int, struct zclient *, uint16_t, vrf_id_t);
 191         int (*interface_address_add)(int, struct zclient *, uint16_t, vrf_id_t);
 192         int (*interface_address_delete)(int, struct zclient *, uint16_t,
 193                                         vrf_id_t);
 194         int (*interface_link_params)(int, struct zclient *, uint16_t);
 195         int (*interface_bfd_dest_update)(int, struct zclient *, uint16_t,
 196                                          vrf_id_t);
 197         int (*interface_nbr_address_add)(int, struct zclient *, uint16_t,
 198                                          vrf_id_t);
 199         int (*interface_nbr_address_delete)(int, struct zclient *, uint16_t,
 200                                             vrf_id_t);
 201         int (*interface_vrf_update)(int, struct zclient *, uint16_t, vrf_id_t);
 202         int (*nexthop_update)(int, struct zclient *, uint16_t, vrf_id_t);
 203         int (*import_check_update)(int, struct zclient *, uint16_t, vrf_id_t);
 204         int (*bfd_dest_replay)(int, struct zclient *, uint16_t, vrf_id_t);
 205         int (*redistribute_route_add)(int, struct zclient *, uint16_t,
 206                                       vrf_id_t);
 207         int (*redistribute_route_del)(int, struct zclient *, uint16_t,
 208                                       vrf_id_t);
 209         int (*fec_update)(int, struct zclient *, uint16_t);
 210         int (*local_vni_add)(int, struct zclient *, uint16_t, vrf_id_t);
 211         int (*local_vni_del)(int, struct zclient *, uint16_t, vrf_id_t);
 212         int (*local_l3vni_add)(int, struct zclient *, uint16_t, vrf_id_t);
 213         int (*local_l3vni_del)(int, struct zclient *, uint16_t, vrf_id_t);
 214         void (*local_ip_prefix_add)(int, struct zclient *, uint16_t, vrf_id_t);
 215         void (*local_ip_prefix_del)(int, struct zclient *, uint16_t, vrf_id_t);
 216         int (*local_macip_add)(int, struct zclient *, uint16_t, vrf_id_t);
 217         int (*local_macip_del)(int, struct zclient *, uint16_t, vrf_id_t);
 218         int (*pw_status_update)(int, struct zclient *, uint16_t, vrf_id_t);
 219         int (*route_notify_owner)(int command, struct zclient *zclient,
 220                                   uint16_t length, vrf_id_t vrf_id);
 221         int (*rule_notify_owner)(int command, struct zclient *zclient,
 222                                  uint16_t length, vrf_id_t vrf_id);
 223 };
 224
 225 /* Zebra API message flag. */
 226 #define ZAPI_MESSAGE_NEXTHOP  0x01
 227 #define ZAPI_MESSAGE_DISTANCE 0x02
 228 #define ZAPI_MESSAGE_METRIC   0x04
 229 #define ZAPI_MESSAGE_TAG      0x08
 230 #define ZAPI_MESSAGE_MTU      0x10
 231 #define ZAPI_MESSAGE_SRCPFX   0x20
 232 #define ZAPI_MESSAGE_LABEL    0x40
 233 /*
 234  * This should only be used by a DAEMON that needs to communicate
 235  * the table being used is not in the VRF.  You must pass the
 236  * default vrf, else this will be ignored.
 237  */
 238 #define ZAPI_MESSAGE_TABLEID  0x80
 239
 240 #define ZSERV_VERSION 5
 241 /* Zserv protocol message header */
 242 struct zmsghdr {
 243         uint16_t length;
 244         /* Always set to 255 in new zserv */
 245         uint8_t marker;
 246         uint8_t version;
 247         vrf_id_t vrf_id;
 248         uint16_t command;
 249 };
 250
 251 struct zapi_nexthop {
 252         enum nexthop_types_t type;
 253         vrf_id_t vrf_id;
 254         ifindex_t ifindex;
 255         union {
 256                 union g_addr gate;
 257                 enum blackhole_type bh_type;
 258         };
 259
 260         /* MPLS labels for BGP-LU or Segment Routing */
 261         uint8_t label_num;
 262         mpls_label_t labels[MPLS_MAX_LABELS];
 263 };
 264
 265 /*
 266  * Some of these data structures do not map easily to
 267  * a actual data structure size giving different compilers
 268  * and systems.  For those data structures we need
 269  * to use the smallest available stream_getX/putX functions
 270  * to encode/decode.
 271  */
 272 struct zapi_route {
 273         u_char type;
 274         u_short instance;
 275
 276         u_int32_t flags;
 277
 278         u_char message;
 279
 280         /*
 281          * This is an enum but we are going to treat it as a uint8_t
 282          * for purpose of encoding/decoding
 283          */
 284         safi_t safi;
 285
 286         struct prefix prefix;
 287         struct prefix_ipv6 src_prefix;
 288
 289         u_int16_t nexthop_num;
 290         struct zapi_nexthop nexthops[MULTIPATH_NUM];
 291
 292         u_char distance;
 293
 294         u_int32_t metric;
 295
 296         route_tag_t tag;
 297
 298         u_int32_t mtu;
 299
 300         vrf_id_t vrf_id;
 301
 302         uint32_t tableid;
 303
 304         struct ethaddr rmac;
 305 };
 306
 307 /* Zebra IPv4 route message API. */
 308 struct zapi_ipv4 {
 309         u_char type;
 310         u_short instance;
 311
 312         u_int32_t flags;
 313
 314         u_char message;
 315
 316         safi_t safi;
 317
 318         u_char nexthop_num;
 319         struct in_addr **nexthop;
 320
 321         u_char ifindex_num;
 322         ifindex_t *ifindex;
 323
 324         u_char label_num;
 325         unsigned int *label;
 326
 327         u_char distance;
 328
 329         u_int32_t metric;
 330
 331         route_tag_t tag;
 332
 333         u_int32_t mtu;
 334
 335         vrf_id_t vrf_id;
 336 };
 337
 338 struct zapi_pw {
 339         char ifname[IF_NAMESIZE];
 340         ifindex_t ifindex;
 341         int type;
 342         int af;
 343         union g_addr nexthop;
 344         uint32_t local_label;
 345         uint32_t remote_label;
 346         uint8_t flags;
 347         union pw_protocol_fields data;
 348         uint8_t protocol;
 349 };
 350
 351 struct zapi_pw_status {
 352         char ifname[IF_NAMESIZE];
 353         ifindex_t ifindex;
 354         uint32_t status;
 355 };
 356
 357 enum zapi_route_notify_owner {
 358         ZAPI_ROUTE_FAIL_INSTALL,
 359         ZAPI_ROUTE_BETTER_ADMIN_WON,
 360         ZAPI_ROUTE_INSTALLED,
 361         ZAPI_ROUTE_REMOVED,
 362         ZAPI_ROUTE_REMOVE_FAIL,
 363 };
 364
 365 enum zapi_rule_notify_owner {
 366         ZAPI_RULE_FAIL_INSTALL,
 367         ZAPI_RULE_INSTALLED,
 368         ZAPI_RULE_REMOVED,
 369 };
 370
 371 /* Zebra MAC types */
 372 #define ZEBRA_MACIP_TYPE_STICKY                0x01 /* Sticky MAC*/
 373 #define ZEBRA_MACIP_TYPE_GW                    0x02 /* gateway (SVI) mac*/
 374
 375 struct zclient_options {
 376         bool receive_notify;
 377 };
 378
 379 /* Prototypes of zebra client service functions. */
 380 extern struct zclient *zclient_new(struct thread_master *);
 381
 382 /* clang-format off */
 383 #if CONFDATE > 20181101
 384 CPP_NOTICE("zclient_new_notify can take over or zclient_new now");
 385 #endif
 386 /* clang-format on */
 387
 388 extern struct zclient_options zclient_options_default;
 389
 390 extern struct zclient *zclient_new_notify(struct thread_master *m,
 391                                           struct zclient_options *opt);
 392
 393 #define zclient_new(A)                                                         \
 394         zclient_new_notify((A), &zclient_options_default);                     \
 395         CPP_WARN("Please transition to using zclient_new_notify");
 396
 397 extern void zclient_init(struct zclient *, int, u_short,
 398                          struct zebra_privs_t *privs);
 399 extern int zclient_start(struct zclient *);
 400 extern void zclient_stop(struct zclient *);
 401 extern void zclient_reset(struct zclient *);
 402 extern void zclient_free(struct zclient *);
 403
 404 extern int zclient_socket_connect(struct zclient *);
 405
 406 extern u_short *redist_check_instance(struct redist_proto *, u_short);
 407 extern void redist_add_instance(struct redist_proto *, u_short);
 408 extern void redist_del_instance(struct redist_proto *, u_short);
 409
 410 /*
 411  * Send to zebra that the specified vrf is using label to resolve
 412  * itself for L3VPN's.  Repeated calls of this function with
 413  * different labels will cause an effective update of the
 414  * label for lookup.  If you pass in MPLS_LABEL_NONE
 415  * we will cause a delete action and remove this label pop
 416  * operation.
 417  *
 418  * The underlying AF_MPLS doesn't care about afi's
 419  * but we can make the zebra_vrf keep track of what
 420  * we have installed and play some special games
 421  * to get them both installed.
 422  */
 423 extern void zclient_send_vrf_label(struct zclient *zclient, vrf_id_t vrf_id,
 424                                    afi_t afi, mpls_label_t label,
 425                                    enum lsp_types_t ltype);
 426
 427 extern void zclient_send_reg_requests(struct zclient *, vrf_id_t);
 428 extern void zclient_send_dereg_requests(struct zclient *, vrf_id_t);
 429
 430 extern void zclient_send_interface_radv_req(struct zclient *zclient,
 431                                             vrf_id_t vrf_id,
 432                                             struct interface *ifp, int enable,
 433                                             int ra_interval);
 434
 435 /* Send redistribute command to zebra daemon. Do not update zclient state. */
 436 extern int zebra_redistribute_send(int command, struct zclient *, afi_t,
 437                                    int type, u_short instance, vrf_id_t vrf_id);
 438
 439 /* If state has changed, update state and call zebra_redistribute_send. */
 440 extern void zclient_redistribute(int command, struct zclient *, afi_t, int type,
 441                                  u_short instance, vrf_id_t vrf_id);
 442
 443 /* If state has changed, update state and send the command to zebra. */
 444 extern void zclient_redistribute_default(int command, struct zclient *,
 445                                          vrf_id_t vrf_id);
 446
 447 /* Send the message in zclient->obuf to the zebra daemon (or enqueue it).
 448    Returns 0 for success or -1 on an I/O error. */
 449 extern int zclient_send_message(struct zclient *);
 450
 451 /* create header for command, length to be filled in by user later */
 452 extern void zclient_create_header(struct stream *, uint16_t, vrf_id_t);
 453 /*
 454  * Read sizeof(struct zmsghdr) bytes from the provided socket and parse the
 455  * received data into the specified fields. If this is successful, read the
 456  * rest of the packet into the provided stream.
 457  *
 458  * s
 459  *    The stream to read into
 460  *
 461  * sock
 462  *    The socket to read from
 463  *
 464  * size
 465  *    Parsed message size will be placed in the pointed-at integer
 466  *
 467  * marker
 468  *    Parsed marker will be placed in the pointed-at byte
 469  *
 470  * version
 471  *    Parsed version will be placed in the pointed-at byte
 472  *
 473  * vrf_id
 474  *    Parsed VRF ID will be placed in the pointed-at vrf_id_t
 475  *
 476  * cmd
 477  *    Parsed command number will be placed in the pointed-at integer
 478  *
 479  * Returns:
 480  *    -1 if:
 481  *    - insufficient data for header was read
 482  *    - a version mismatch was detected
 483  *    - a marker mismatch was detected
 484  *    - header size field specified more data than could be read
 485  */
 486 extern int zclient_read_header(struct stream *s, int sock, u_int16_t *size,
 487                                u_char *marker, u_char *version,
 488                                vrf_id_t *vrf_id, u_int16_t *cmd);
 489 /*
 490  * Parse header from ZAPI message stream into struct zmsghdr.
 491  * This function assumes the stream getp points at the first byte of the header.
 492  * If the function is successful then the stream getp will point to the byte
 493  * immediately after the last byte of the header.
 494  *
 495  * zmsg
 496  *    The stream containing the header
 497  *
 498  * hdr
 499  *    The header struct to parse into.
 500  *
 501  * Returns:
 502  *    true if parsing succeeded, false otherwise
 503  */
 504 extern bool zapi_parse_header(struct stream *zmsg, struct zmsghdr *hdr);
 505
 506 extern void zclient_interface_set_master(struct zclient *client,
 507                                          struct interface *master,
 508                                          struct interface *slave);
 509 extern struct interface *zebra_interface_add_read(struct stream *, vrf_id_t);
 510 extern struct interface *zebra_interface_state_read(struct stream *s, vrf_id_t);
 511 extern struct connected *zebra_interface_address_read(int, struct stream *,
 512                                                       vrf_id_t);
 513 extern struct nbr_connected *
 514 zebra_interface_nbr_address_read(int, struct stream *, vrf_id_t);
 515 extern struct interface *zebra_interface_vrf_update_read(struct stream *s,
 516                                                          vrf_id_t vrf_id,
 517                                                          vrf_id_t *new_vrf_id);
 518 extern void zebra_interface_if_set_value(struct stream *, struct interface *);
 519 extern void zebra_router_id_update_read(struct stream *s, struct prefix *rid);
 520
 521 /* clang-format off */
 522 #if CONFDATE > 20180823
 523 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");
 524 #endif
 525 /* clang-format on */
 526
 527 extern int zapi_ipv4_route(u_char, struct zclient *, struct prefix_ipv4 *,
 528                            struct zapi_ipv4 *) __attribute__((deprecated));
 529
 530 extern struct interface *zebra_interface_link_params_read(struct stream *);
 531 extern size_t zebra_interface_link_params_write(struct stream *,
 532                                                 struct interface *);
 533 extern int lm_label_manager_connect(struct zclient *zclient);
 534 extern int lm_get_label_chunk(struct zclient *zclient, u_char keep,
 535                               uint32_t chunk_size, uint32_t *start,
 536                               uint32_t *end);
 537 extern int lm_release_label_chunk(struct zclient *zclient, uint32_t start,
 538                                   uint32_t end);
 539 extern int zebra_send_pw(struct zclient *zclient, int command,
 540                          struct zapi_pw *pw);
 541 extern void zebra_read_pw_status_update(int command, struct zclient *zclient,
 542                                         zebra_size_t length, vrf_id_t vrf_id,
 543                                         struct zapi_pw_status *pw);
 544
 545 /* IPv6 prefix add and delete function prototype. */
 546
 547 struct zapi_ipv6 {
 548         u_char type;
 549         u_short instance;
 550
 551         u_int32_t flags;
 552
 553         u_char message;
 554
 555         safi_t safi;
 556
 557         u_char nexthop_num;
 558         struct in6_addr **nexthop;
 559
 560         u_char ifindex_num;
 561         ifindex_t *ifindex;
 562
 563         u_char label_num;
 564         unsigned int *label;
 565
 566         u_char distance;
 567
 568         u_int32_t metric;
 569
 570         route_tag_t tag;
 571
 572         u_int32_t mtu;
 573
 574         vrf_id_t vrf_id;
 575 };
 576
 577 extern int zapi_ipv6_route(u_char cmd, struct zclient *zclient,
 578                            struct prefix_ipv6 *p, struct prefix_ipv6 *src_p,
 579                            struct zapi_ipv6 *api) __attribute__((deprecated));
 580 extern int zapi_ipv4_route_ipv6_nexthop(u_char, struct zclient *,
 581                                         struct prefix_ipv4 *,
 582                                         struct zapi_ipv6 *)
 583         __attribute__((deprecated));
 584 extern int zclient_route_send(u_char, struct zclient *, struct zapi_route *);
 585 extern int zclient_send_rnh(struct zclient *zclient, int command,
 586                             struct prefix *p, bool exact_match,
 587                             vrf_id_t vrf_id);
 588 extern int zapi_route_encode(u_char, struct stream *, struct zapi_route *);
 589 extern int zapi_route_decode(struct stream *, struct zapi_route *);
 590 bool zapi_route_notify_decode(struct stream *s, struct prefix *p,
 591                               uint32_t *tableid,
 592                               enum zapi_route_notify_owner *note);
 593 bool zapi_rule_notify_decode(struct stream *s, uint32_t *seqno,
 594                              uint32_t *priority, uint32_t *unique,
 595                              ifindex_t *ifindex,
 596                              enum zapi_rule_notify_owner *note);
 597 extern struct nexthop *nexthop_from_zapi_nexthop(struct zapi_nexthop *znh);
 598 extern bool zapi_nexthop_update_decode(struct stream *s,
 599                                        struct zapi_route *nhr);
 600
 601 static inline void zapi_route_set_blackhole(struct zapi_route *api,
 602                                             enum blackhole_type bh_type)
 603 {
 604         api->nexthop_num = 1;
 605         api->nexthops[0].type = NEXTHOP_TYPE_BLACKHOLE;
 606         api->nexthops[0].vrf_id = VRF_DEFAULT;
 607         api->nexthops[0].bh_type = bh_type;
 608         SET_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP);
 609 };
 610
 611
 612 #endif /* _ZEBRA_ZCLIENT_H */