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/* 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
/* Zebra message types. */
typedef enum {
ZEBRA_INTERFACE_ADD,
ZEBRA_INTERFACE_DELETE,
ZEBRA_INTERFACE_ADDRESS_ADD,
ZEBRA_INTERFACE_ADDRESS_DELETE,
ZEBRA_INTERFACE_UP,
ZEBRA_INTERFACE_DOWN,
ZEBRA_IPV4_ROUTE_ADD,
ZEBRA_IPV4_ROUTE_DELETE,
ZEBRA_IPV6_ROUTE_ADD,
ZEBRA_IPV6_ROUTE_DELETE,
ZEBRA_REDISTRIBUTE_ADD,
ZEBRA_REDISTRIBUTE_DELETE,
ZEBRA_REDISTRIBUTE_DEFAULT_ADD,
ZEBRA_REDISTRIBUTE_DEFAULT_DELETE,
ZEBRA_ROUTER_ID_ADD,
ZEBRA_ROUTER_ID_DELETE,
ZEBRA_ROUTER_ID_UPDATE,
ZEBRA_HELLO,
ZEBRA_NEXTHOP_REGISTER,
ZEBRA_NEXTHOP_UNREGISTER,
ZEBRA_NEXTHOP_UPDATE,
ZEBRA_INTERFACE_NBR_ADDRESS_ADD,
ZEBRA_INTERFACE_NBR_ADDRESS_DELETE,
ZEBRA_INTERFACE_BFD_DEST_UPDATE,
ZEBRA_IMPORT_ROUTE_REGISTER,
ZEBRA_IMPORT_ROUTE_UNREGISTER,
ZEBRA_IMPORT_CHECK_UPDATE,
ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD,
ZEBRA_BFD_DEST_REGISTER,
ZEBRA_BFD_DEST_DEREGISTER,
ZEBRA_BFD_DEST_UPDATE,
ZEBRA_BFD_DEST_REPLAY,
ZEBRA_REDISTRIBUTE_IPV4_ADD,
ZEBRA_REDISTRIBUTE_IPV4_DEL,
ZEBRA_REDISTRIBUTE_IPV6_ADD,
ZEBRA_REDISTRIBUTE_IPV6_DEL,
ZEBRA_VRF_UNREGISTER,
ZEBRA_VRF_ADD,
ZEBRA_VRF_DELETE,
ZEBRA_INTERFACE_VRF_UPDATE,
ZEBRA_BFD_CLIENT_REGISTER,
ZEBRA_INTERFACE_ENABLE_RADV,
ZEBRA_INTERFACE_DISABLE_RADV,
ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB,
ZEBRA_INTERFACE_LINK_PARAMS,
ZEBRA_MPLS_LABELS_ADD,
ZEBRA_MPLS_LABELS_DELETE,
ZEBRA_IPV4_NEXTHOP_ADD,
ZEBRA_IPV4_NEXTHOP_DELETE,
ZEBRA_IPV6_NEXTHOP_ADD,
ZEBRA_IPV6_NEXTHOP_DELETE,
ZEBRA_IPMR_ROUTE_STATS,
ZEBRA_LABEL_MANAGER_CONNECT,
ZEBRA_GET_LABEL_CHUNK,
ZEBRA_RELEASE_LABEL_CHUNK,
} zebra_message_types_t;
struct redist_proto
{
u_char enabled;
struct list *instances;
};
/* 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; /* clients protocol */
u_short instance;
struct redist_proto mi_redist[AFI_MAX][ZEBRA_ROUTE_MAX];
vrf_bitmap_t redist[AFI_MAX][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 (*interface_link_params) (int, struct zclient *, uint16_t);
int (*interface_bfd_dest_update) (int, struct zclient *, uint16_t, vrf_id_t);
int (*interface_nbr_address_add) (int, struct zclient *, uint16_t, vrf_id_t);
int (*interface_nbr_address_delete) (int, struct zclient *, uint16_t, vrf_id_t);
int (*interface_vrf_update) (int, struct zclient *, uint16_t, vrf_id_t);
int (*nexthop_update) (int, struct zclient *, uint16_t, vrf_id_t);
int (*import_check_update) (int, struct zclient *, uint16_t, vrf_id_t);
int (*bfd_dest_replay) (int, struct zclient *, uint16_t, vrf_id_t);
int (*redistribute_route_ipv4_add) (int, struct zclient *, uint16_t, vrf_id_t);
int (*redistribute_route_ipv4_del) (int, struct zclient *, uint16_t, vrf_id_t);
int (*redistribute_route_ipv6_add) (int, struct zclient *, uint16_t, vrf_id_t);
int (*redistribute_route_ipv6_del) (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_TAG 0x10
#define ZAPI_MESSAGE_MTU 0x20
#define ZAPI_MESSAGE_SRCPFX 0x40
/* 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 4
vrf_id_t vrf_id;
uint16_t command;
};
/* Zebra IPv4 route message API. */
struct zapi_ipv4
{
u_char type;
u_short instance;
u_int32_t 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;
route_tag_t tag;
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, u_short);
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 u_short *redist_check_instance (struct redist_proto *, u_short);
extern void redist_add_instance (struct redist_proto *, u_short);
extern void redist_del_instance (struct redist_proto *, u_short);
extern void zclient_send_reg_requests (struct zclient *, vrf_id_t);
extern void zclient_send_dereg_requests (struct zclient *, vrf_id_t);
extern void zclient_send_interface_radv_req (struct zclient *zclient, vrf_id_t vrf_id,
struct interface *ifp, int enable, int ra_interval);
/* Send redistribute command to zebra daemon. Do not update zclient state. */
extern int zebra_redistribute_send (int command, struct zclient *, afi_t, int type, u_short instance, vrf_id_t vrf_id);
/* If state has changed, update state and call zebra_redistribute_send. */
extern void zclient_redistribute (int command, struct zclient *, afi_t, int type,
u_short instance, 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,
vrf_id_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 *s, vrf_id_t);
extern struct connected *zebra_interface_address_read (int, struct stream *, vrf_id_t);
extern struct nbr_connected *zebra_interface_nbr_address_read (int, struct stream *, vrf_id_t);
extern struct interface * zebra_interface_vrf_update_read (struct stream *s, vrf_id_t vrf_id,
vrf_id_t *new_vrf_id);
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 *);
extern struct interface *zebra_interface_link_params_read (struct stream *);
extern size_t zebra_interface_link_params_write (struct stream *,
struct interface *);
extern int lm_label_manager_connect (struct zclient *zclient);
extern int lm_get_label_chunk (struct zclient *zclient, u_char keep,
uint32_t chunk_size, uint32_t *start, uint32_t *end);
extern int lm_release_label_chunk (struct zclient *zclient, uint32_t start, uint32_t end);
/* IPv6 prefix add and delete function prototype. */
struct zapi_ipv6
{
u_char type;
u_short instance;
u_int32_t 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;
route_tag_t tag;
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 prefix_ipv6 *src_p,
struct zapi_ipv6 *api);
extern int zapi_ipv4_route_ipv6_nexthop (u_char, struct zclient *,
struct prefix_ipv4 *, struct zapi_ipv6 *);
#endif /* _ZEBRA_ZCLIENT_H */
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