c10421d3d4
o Now compatible with filtering. o Learning of kernel routes supported only on CONFIG_SELF_CONSCIOUS systems (on the others it's impossible to get it semantically correct). o Learning now stores all of its routes in a separate fib and selects the ones the kernel really uses for forwarding packets. o Better treatment of CONFIG_AUTO_ROUTES ports. o Lots of internal changes.
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/*
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* BIRD -- UNIX Kernel Route Syncer
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*
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* (c) 1998--1999 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_KRT_H_
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#define _BIRD_KRT_H_
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struct krt_config;
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struct krt_proto;
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struct kif_config;
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struct kif_proto;
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#include "lib/krt-scan.h"
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#include "lib/krt-set.h"
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#include "lib/krt-iface.h"
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/* Flags stored in net->n.flags */
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#define KRF_VERDICT_MASK 0x0f
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#define KRF_CREATE 0 /* Not seen in kernel table */
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#define KRF_SEEN 1 /* Seen in kernel table during last scan */
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#define KRF_UPDATE 2 /* Need to update this entry */
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#define KRF_DELETE 3 /* Should be deleted */
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#define KRF_IGNORE 4 /* To be ignored */
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#define KRF_INSTALLED 0x80 /* This route should be installed in the kernel */
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/* Whenever we recognize our own routes, we allow learing of foreign routes */
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#ifdef CONFIG_SELF_CONSCIOUS
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#define KRT_ALLOW_LEARN
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#endif
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/* krt.c */
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extern struct protocol proto_unix_kernel;
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struct krt_config {
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struct proto_config c;
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struct krt_set_params set;
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struct krt_scan_params scan;
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struct krt_if_params iface;
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int persist; /* Keep routes when we exit */
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int scan_time; /* How often we re-scan routes */
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int learn; /* Learn routes from other sources */
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};
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struct krt_proto {
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struct proto p;
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struct krt_set_status set;
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struct krt_scan_status scan;
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struct krt_if_status iface;
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#ifdef KRT_ALLOW_LEARN
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struct rtable krt_table; /* Internal table of inherited routes */
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#endif
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};
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extern struct proto_config *cf_krt;
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#define KRT_CF ((struct krt_config *)p->p.cf)
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void krt_got_route(struct krt_proto *p, struct rte *e);
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void krt_got_route_async(struct krt_proto *p, struct rte *e, int new);
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/* Values for rte->u.krt_sync.src */
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#define KRT_SRC_UNKNOWN -1 /* Nobody knows */
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#define KRT_SRC_BIRD 0 /* Our route (not passed in async mode) */
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#define KRT_SRC_REDIRECT 1 /* Redirect route, delete it */
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#define KRT_SRC_ALIEN 2 /* Route installed by someone else */
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extern struct protocol proto_unix_iface;
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struct kif_config {
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struct proto_config c;
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struct krt_if_params iface;
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int scan_time; /* How often we re-scan interfaces */
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};
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struct kif_proto {
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struct proto p;
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struct krt_if_status iface;
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};
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extern struct proto_config *cf_kif;
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#define KIF_CF ((struct kif_config *)p->p.cf)
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/* krt-scan.c */
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void krt_scan_preconfig(struct krt_config *);
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void krt_scan_start(struct krt_proto *);
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void krt_scan_shutdown(struct krt_proto *);
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void krt_scan_fire(struct krt_proto *);
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/* krt-set.c */
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void krt_set_preconfig(struct krt_config *);
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void krt_set_start(struct krt_proto *);
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void krt_set_shutdown(struct krt_proto *);
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int krt_capable(rte *e);
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void krt_set_notify(struct krt_proto *x, net *net, rte *new, rte *old);
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/* krt-iface.c */
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void krt_if_preconfig(struct kif_config *);
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void krt_if_start(struct kif_proto *);
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void krt_if_shutdown(struct kif_proto *);
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void krt_if_scan(struct kif_proto *);
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void krt_if_io_init(void);
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#endif
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