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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-sys.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 KRT_DEFAULT_ECMP_LIMIT 16
#define EA_KRT_SOURCE EA_CODE(EAP_KRT, 0)
#define EA_KRT_METRIC EA_CODE(EAP_KRT, 1)
/* 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_params sys; /* Sysdep params */
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 */
int graceful_restart; /* Regard graceful restart recovery */
int merge_paths; /* Exported routes are merged for ECMP */
};
struct krt_proto {
struct proto p;
struct krt_state sys; /* Sysdep state */
#ifdef KRT_ALLOW_LEARN
struct rtable krt_table; /* Internal table of inherited routes */
#endif
#ifndef CONFIG_ALL_TABLES_AT_ONCE
timer *scan_timer;
#endif
node krt_node; /* Node in krt_proto_list */
byte af; /* Kernel address family (AF_*) */
byte ready; /* Initial feed has been finished */
byte initialized; /* First scan has been finished */
byte reload; /* Next scan is doing reload */
};
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)
struct proto_config * kif_init_config(int class);
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;
net_addr addr;
};
struct kif_config {
struct proto_config c;
struct kif_params sys; /* Sysdep params */
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 kif_state sys; /* Sysdep state */
};
struct kif_proto *kif_proto;
#define KIF_CF ((struct kif_config *)p->p.cf)
struct proto_config * krt_init_config(int class);
/* krt sysdep */
void krt_sys_io_init(void);
void krt_sys_init(struct krt_proto *);
int krt_sys_start(struct krt_proto *);
void krt_sys_shutdown(struct krt_proto *);
int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o);
void krt_sys_preconfig(struct config *);
void krt_sys_postconfig(struct krt_config *);
void krt_sys_init_config(struct krt_config *);
void krt_sys_copy_config(struct krt_config *, struct krt_config *);
int krt_capable(rte *e);
void krt_do_scan(struct krt_proto *);
void krt_replace_rte(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs);
int krt_sys_get_attr(eattr *a, byte *buf, int buflen);
/* kif sysdep */
void kif_sys_init(struct kif_proto *);
void kif_sys_start(struct kif_proto *);
void kif_sys_shutdown(struct kif_proto *);
int kif_sys_reconfigure(struct kif_proto *, struct kif_config *, struct kif_config *);
void kif_sys_init_config(struct kif_config *);
void kif_sys_copy_config(struct kif_config *, struct kif_config *);
void kif_do_scan(struct kif_proto *);
struct ifa *kif_get_primary_ip(struct iface *i);
#endif
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