/* Zebra's client header. * Copyright (C) 1999 Kunihiro Ishiguro * * This file is part of GNU Zebra. * * GNU Zebra is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * GNU Zebra is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GNU Zebra; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef _ZEBRA_ZCLIENT_H #define _ZEBRA_ZCLIENT_H /* For struct zapi_ipv{4,6}. */ #include "prefix.h" /* For struct interface and struct connected. */ #include "if.h" /* For vrf_bitmap_t. */ #include "vrf.h" /* For input/output buffer to zebra. */ #define ZEBRA_MAX_PACKET_SIZ 4096 /* Zebra header size. */ #define ZEBRA_HEADER_SIZE 8 /* Structure for the zebra client. */ struct zclient { /* The thread master we schedule ourselves on */ struct thread_master *master; /* Socket to zebra daemon. */ int sock; /* Flag of communication to zebra is enabled or not. Default is on. This flag is disabled by `no router zebra' statement. */ int enable; /* Connection failure count. */ int fail; /* Input buffer for zebra message. */ struct stream *ibuf; /* Output buffer for zebra message. */ struct stream *obuf; /* Buffer of data waiting to be written to zebra. */ struct buffer *wb; /* Read and connect thread. */ struct thread *t_read; struct thread *t_connect; /* Thread to write buffered data to zebra. */ struct thread *t_write; /* Redistribute information. */ u_char redist_default; vrf_bitmap_t redist[ZEBRA_ROUTE_MAX]; /* Redistribute defauilt. */ vrf_bitmap_t default_information; /* Pointer to the callback functions. */ void (*zebra_connected) (struct zclient *); int (*router_id_update) (int, struct zclient *, uint16_t, vrf_id_t); int (*interface_add) (int, struct zclient *, uint16_t, vrf_id_t); int (*interface_delete) (int, struct zclient *, uint16_t, vrf_id_t); int (*interface_up) (int, struct zclient *, uint16_t, vrf_id_t); int (*interface_down) (int, struct zclient *, uint16_t, vrf_id_t); int (*interface_address_add) (int, struct zclient *, uint16_t, vrf_id_t); int (*interface_address_delete) (int, struct zclient *, uint16_t, vrf_id_t); int (*ipv4_route_add) (int, struct zclient *, uint16_t, vrf_id_t); int (*ipv4_route_delete) (int, struct zclient *, uint16_t, vrf_id_t); int (*ipv6_route_add) (int, struct zclient *, uint16_t, vrf_id_t); int (*ipv6_route_delete) (int, struct zclient *, uint16_t, vrf_id_t); }; /* Zebra API message flag. */ #define ZAPI_MESSAGE_NEXTHOP 0x01 #define ZAPI_MESSAGE_IFINDEX 0x02 #define ZAPI_MESSAGE_DISTANCE 0x04 #define ZAPI_MESSAGE_METRIC 0x08 #define ZAPI_MESSAGE_MTU 0x10 /* Zserv protocol message header */ struct zserv_header { uint16_t length; uint8_t marker; /* corresponds to command field in old zserv * always set to 255 in new zserv. */ uint8_t version; #define ZSERV_VERSION 3 vrf_id_t vrf_id; uint16_t command; }; /* Zebra IPv4 route message API. */ struct zapi_ipv4 { u_char type; u_char flags; u_char message; safi_t safi; u_char nexthop_num; struct in_addr **nexthop; u_char ifindex_num; ifindex_t *ifindex; u_char distance; u_int32_t metric; u_int32_t mtu; vrf_id_t vrf_id; }; /* Prototypes of zebra client service functions. */ extern struct zclient *zclient_new (struct thread_master *); extern void zclient_init (struct zclient *, int); extern int zclient_start (struct zclient *); extern void zclient_stop (struct zclient *); extern void zclient_reset (struct zclient *); extern void zclient_free (struct zclient *); extern int zclient_socket_connect (struct zclient *); extern void zclient_serv_path_set (char *path); extern const char *zclient_serv_path_get (void); extern void zclient_send_requests (struct zclient *, vrf_id_t); /* Send redistribute command to zebra daemon. Do not update zclient state. */ extern int zebra_redistribute_send (int command, struct zclient *, int type, vrf_id_t vrf_id); /* If state has changed, update state and call zebra_redistribute_send. */ extern void zclient_redistribute (int command, struct zclient *, int type, vrf_id_t vrf_id); /* If state has changed, update state and send the command to zebra. */ extern void zclient_redistribute_default (int command, struct zclient *, vrf_id_t vrf_id); /* Send the message in zclient->obuf to the zebra daemon (or enqueue it). Returns 0 for success or -1 on an I/O error. */ extern int zclient_send_message(struct zclient *); /* create header for command, length to be filled in by user later */ extern void zclient_create_header (struct stream *, uint16_t, vrf_id_t); extern int zclient_read_header (struct stream *s, int sock, u_int16_t *size, u_char *marker, u_char *version, u_int16_t *vrf_id, u_int16_t *cmd); extern struct interface *zebra_interface_add_read (struct stream *, vrf_id_t); extern struct interface *zebra_interface_state_read (struct stream *, vrf_id_t); extern struct connected *zebra_interface_address_read (int, struct stream *, vrf_id_t); extern void zebra_interface_if_set_value (struct stream *, struct interface *); extern void zebra_router_id_update_read (struct stream *s, struct prefix *rid); extern int zapi_ipv4_route (u_char, struct zclient *, struct prefix_ipv4 *, struct zapi_ipv4 *); #ifdef HAVE_IPV6 /* IPv6 prefix add and delete function prototype. */ struct zapi_ipv6 { u_char type; u_char flags; u_char message; safi_t safi; u_char nexthop_num; struct in6_addr **nexthop; u_char ifindex_num; ifindex_t *ifindex; u_char distance; u_int32_t metric; u_int32_t mtu; vrf_id_t vrf_id; }; extern int zapi_ipv6_route (u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, struct zapi_ipv6 *api); #endif /* HAVE_IPV6 */ #endif /* _ZEBRA_ZCLIENT_H */