/*
 *	BIRD -- UNIX Kernel Route Syncer
 *
 *	(c) 1998--1999 Martin Mares <mj@ucw.cz>
 *
 *	Can be freely distributed and used under the terms of the GNU GPL.
 */

#ifndef _BIRD_KRT_H_
#define _BIRD_KRT_H_

struct krt_config;
struct krt_proto;

#include "lib/krt-scan.h"
#include "lib/krt-set.h"
#include "lib/krt-iface.h"

/* Flags stored in net->n.flags */

#define KRF_CREATE 0			/* Not seen in kernel table */
#define KRF_SEEN 1			/* Seen in kernel table during last scan */
#define KRF_UPDATE 2			/* Need to update this entry */
#define KRF_DELETE 3			/* Should be deleted */
#define KRF_LEARN 4			/* We should learn this route */

/* krt.c */

extern struct protocol proto_unix_kernel;

struct krt_config {
  struct proto_config c;
  struct krt_set_params set;
  struct krt_scan_params scan;
  struct krt_if_params iface;
  int persist;			/* Keep routes when we exit */
  int scan_time;		/* How often we re-scan interfaces */
  int route_scan_time;		/* How often we re-scan routes */
  int learn;			/* Learn routes from other sources */
};

struct krt_proto {
  struct proto p;
  struct krt_set_status set;
  struct krt_scan_status scan;
  struct krt_if_status iface;
  int accum_time;	        /* Accumulated route scanning time */
};

extern struct proto_config *cf_krt;

#define KRT_CF ((struct krt_config *)p->p.cf)

void krt_got_route(struct krt_proto *p, struct rte *e);
void krt_got_route_async(struct krt_proto *p, struct rte *e, int new);

/* Values for rte->u.krt_sync.src */
#define KRT_SRC_UNKNOWN	-1	/* Nobody knows */
#define KRT_SRC_BIRD	 0	/* Our route (not passed in async mode) */
#define KRT_SRC_REDIRECT 1	/* Redirect route, delete it */
#define KRT_SRC_ALIEN	 2	/* Route installed by someone else */

/* krt-scan.c */

void krt_scan_preconfig(struct krt_config *);
void krt_scan_start(struct krt_proto *);
void krt_scan_shutdown(struct krt_proto *);

void krt_scan_fire(struct krt_proto *);

/* krt-set.c */

void krt_set_preconfig(struct krt_config *);
void krt_set_start(struct krt_proto *);
void krt_set_shutdown(struct krt_proto *);

int krt_capable(rte *e);
void krt_set_notify(struct proto *x, net *net, rte *new, rte *old);

/* krt-iface.c */

void krt_if_preconfig(struct krt_config *);
void krt_if_start(struct krt_proto *);
void krt_if_shutdown(struct krt_proto *);

void krt_if_scan(struct krt_proto *);

#endif