mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-22 17:51:53 +00:00
f6bd206607
when their destination comes on/off link. Deserves better testing :) See example in bird.conf.
162 lines
3.1 KiB
C
162 lines
3.1 KiB
C
/*
|
|
* BIRD -- Static Route Generator
|
|
*
|
|
* (c) 1998 Martin Mares <mj@ucw.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#define LOCAL_DEBUG
|
|
|
|
#include <string.h>
|
|
|
|
#include "nest/bird.h"
|
|
#include "nest/iface.h"
|
|
#include "nest/protocol.h"
|
|
#include "nest/route.h"
|
|
#include "conf/conf.h"
|
|
|
|
#include "static.h"
|
|
|
|
#define GET_DATA struct static_proto *p = (struct static_proto *) P
|
|
|
|
static void
|
|
static_install(struct static_proto *p, struct static_route *r, struct iface *ifa)
|
|
{
|
|
net *n;
|
|
rta a, *aa;
|
|
rte *e;
|
|
|
|
DBG("Installing static route %I/%d, rtd=%d\n", r->net, r->masklen, r->dest);
|
|
bzero(&a, sizeof(a));
|
|
a.proto = &p->p;
|
|
a.source = (r->dest == RTD_DEVICE) ? RTS_STATIC_DEVICE : RTS_STATIC;
|
|
a.scope = SCOPE_UNIVERSE;
|
|
a.cast = RTC_UNICAST;
|
|
a.dest = r->dest;
|
|
a.tos = 0;
|
|
a.gw = r->via;
|
|
a.iface = ifa;
|
|
aa = rta_lookup(&a);
|
|
|
|
n = net_get(&master_table, a.tos, r->net, r->masklen);
|
|
e = rte_get_temp(aa);
|
|
e->net = n;
|
|
e->pflags = 0;
|
|
rte_update(n, &p->p, e);
|
|
}
|
|
|
|
static void
|
|
static_remove(struct static_proto *p, struct static_route *r)
|
|
{
|
|
net *n;
|
|
|
|
DBG("Removing static route %I/%d\n", r->net, r->masklen);
|
|
n = net_find(&master_table, 0, r->net, r->masklen);
|
|
if (n)
|
|
rte_update(n, &p->p, NULL);
|
|
}
|
|
|
|
static void
|
|
static_start(struct proto *P)
|
|
{
|
|
GET_DATA;
|
|
struct static_route *r;
|
|
|
|
DBG("Static: take off!\n");
|
|
WALK_LIST(r, p->other_routes)
|
|
if (r->dest == RTD_ROUTER)
|
|
{
|
|
struct neighbor *n = neigh_find(P, &r->via, NEF_STICKY);
|
|
if (n)
|
|
{
|
|
n->data = r;
|
|
r->neigh = n;
|
|
static_install(p, r, n->iface);
|
|
}
|
|
else
|
|
log(L_ERR "Static route destination %I is invalid. Ignoring.\n", r->via);
|
|
}
|
|
else
|
|
static_install(p, r, NULL);
|
|
}
|
|
|
|
static void
|
|
static_neigh_notify(struct neighbor *n)
|
|
{
|
|
DBG("Static: neighbor notify for %I: iface %p\n", n->addr, n->iface);
|
|
if (n->iface)
|
|
static_install((struct static_proto *) n->proto, n->data, n->iface);
|
|
else
|
|
static_remove((struct static_proto *) n->proto, n->data);
|
|
}
|
|
|
|
static void
|
|
static_dump_rt(struct static_route *r)
|
|
{
|
|
debug("%16I/%2d: ", r->net, r->masklen);
|
|
switch (r->dest)
|
|
{
|
|
case RTD_ROUTER:
|
|
debug("via %I\n", r->via);
|
|
break;
|
|
case RTD_DEVICE:
|
|
debug("dev %s\n", r->if_name);
|
|
break;
|
|
default:
|
|
debug("rtd %d\n", r->dest);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
static_dump(struct proto *P)
|
|
{
|
|
GET_DATA;
|
|
struct static_route *r;
|
|
|
|
debug("Independent static routes:\n");
|
|
WALK_LIST(r, p->other_routes)
|
|
static_dump_rt(r);
|
|
debug("Device static routes:\n");
|
|
WALK_LIST(r, p->iface_routes)
|
|
static_dump_rt(r);
|
|
}
|
|
|
|
void
|
|
static_init_instance(struct static_proto *P)
|
|
{
|
|
struct proto *p = &P->p;
|
|
|
|
p->preference = DEF_PREF_STATIC;
|
|
p->start = static_start;
|
|
p->neigh_notify = static_neigh_notify;
|
|
p->dump = static_dump;
|
|
init_list(&P->iface_routes);
|
|
init_list(&P->other_routes);
|
|
}
|
|
|
|
static void
|
|
static_init(struct protocol *p)
|
|
{
|
|
}
|
|
|
|
static void
|
|
static_preconfig(struct protocol *x)
|
|
{
|
|
}
|
|
|
|
static void
|
|
static_postconfig(struct protocol *p)
|
|
{
|
|
}
|
|
|
|
struct protocol proto_static = {
|
|
{ NULL, NULL },
|
|
"Static",
|
|
0,
|
|
static_init,
|
|
static_preconfig,
|
|
static_postconfig
|
|
};
|