/* * 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 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; ip_addr prefix; int pxlen; }; 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