bird/sysdep/unix/krt.h
Martin Mares e16155ae4a KRT: Implemented asynchronous route / interface state notifications
(via Netlink). Tweaked kernel synchronization rules a bit. Discovered
locking bug in kernel Netlink :-)

Future plans: Hunt all the bugs and solve all the FIXME's.
1999-03-04 18:36:18 +00:00

88 lines
2.3 KiB
C

/*
* 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