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/*
* BIRD -- UNIX Kernel Route Syncer
*
* (c) 1998--2000 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 config;
struct krt_config;
struct krt_proto;
struct kif_config;
struct kif_proto;
#include "lib/krt-scan.h"
#include "lib/krt-set.h"
#include "lib/krt-iface.h"
/* Flags stored in net->n.flags, rest are in nest/route.h */
#define KRF_VERDICT_MASK 0x0f
#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_IGNORE 4 /* To be ignored */
#define EA_KRT_SOURCE EA_CODE(EAP_KRT, 0)
#define EA_KRT_METRIC EA_CODE(EAP_KRT, 1)
#define EA_KRT_PREFSRC EA_CODE(EAP_KRT, 2)
#define EA_KRT_REALM EA_CODE(EAP_KRT, 3)
/* Whenever we recognize our own routes, we allow learing of foreign routes */
#ifdef CONFIG_SELF_CONSCIOUS
#define KRT_ALLOW_LEARN
#endif
/* 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;
int persist; /* Keep routes when we exit */
int scan_time; /* How often we re-scan routes */
int learn; /* Learn routes from other sources */
int devroutes; /* Allow export of device routes */
};
struct krt_proto {
struct proto p;
struct krt_set_status set;
struct krt_scan_status scan;
struct krt_if_status iface;
#ifdef KRT_ALLOW_LEARN
struct rtable krt_table; /* Internal table of inherited routes */
#endif
pool *krt_pool; /* Pool used for common krt data */
timer *scan_timer;
#ifdef CONFIG_ALL_TABLES_AT_ONCE
node instance_node; /* Node in krt instance list */
#endif
int initialized; /* First scan has already been finished */
};
extern struct proto_config *cf_krt;
extern pool *krt_pool;
#define KRT_CF ((struct krt_config *)p->p.cf)
#define KRT_TRACE(pr, fl, msg, args...) do { \
DBG("KRT: " msg "\n" , ## args); \
if (pr->p.debug & fl) \
{ log(L_TRACE "%s: " msg, pr->p.name , ## args); } } while(0)
void kif_request_scan(void);
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 */
#define KRT_SRC_KERNEL 3 /* Kernel routes, are ignored by krt syncer */
extern struct protocol proto_unix_iface;
struct kif_primary_item {
node n;
byte *pattern;
ip_addr prefix;
int pxlen;
};
struct kif_config {
struct proto_config c;
struct krt_if_params iface;
int scan_time; /* How often we re-scan interfaces */
list primary; /* Preferences for primary addresses (struct kif_primary_item) */
};
struct kif_proto {
struct proto p;
struct krt_if_status iface;
};
extern struct proto_config *cf_kif;
#define KIF_CF ((struct kif_config *)p->p.cf)
/* krt-scan.c */
void krt_scan_preconfig(struct config *);
void krt_scan_postconfig(struct krt_config *);
void krt_scan_construct(struct krt_config *);
void krt_scan_start(struct krt_proto *, int);
void krt_scan_shutdown(struct krt_proto *, int);
void krt_scan_fire(struct krt_proto *);
/* krt-set.c */
void krt_set_construct(struct krt_config *);
void krt_set_start(struct krt_proto *, int);
void krt_set_shutdown(struct krt_proto *, int);
int krt_capable(rte *e);
void krt_set_notify(struct krt_proto *x, net *net, rte *new, rte *old);
/* krt-iface.c */
void krt_if_construct(struct kif_config *);
void krt_if_start(struct kif_proto *);
void krt_if_shutdown(struct kif_proto *);
void krt_if_scan(struct kif_proto *);
void krt_if_io_init(void);
#endif
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