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/*
* 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
};
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