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/*
* BIRD -- Direct Device Routes
*
* (c) 1998--1999 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 "nest/rt-dev.h"
#include "conf/conf.h"
#include "lib/resource.h"
struct proto_config *cf_dev_proto;
static void
dev_if_notify(struct proto *p, unsigned c, struct iface *new, struct iface *old)
{
struct rt_dev_config *P = (void *) p->cf;
if (old && !iface_patt_match(&P->iface_list, old) ||
new && !iface_patt_match(&P->iface_list, new))
return;
if (c & IF_CHANGE_DOWN)
{
net *n;
debug("dev_if_notify: %s going down\n", old->name);
n = net_find(&master_table, 0, old->prefix, old->pxlen);
if (!n)
{
debug("dev_if_notify: device shutdown: prefix not found\n");
return;
}
rte_update(n, p, NULL);
}
else if (c & IF_CHANGE_UP)
{
rta *a, A;
net *n;
rte *e;
debug("dev_if_notify: %s going up\n", new->name);
bzero(&A, sizeof(A));
A.proto = p;
A.source = RTS_DEVICE;
A.scope = (new->flags & IF_LOOPBACK) ? SCOPE_HOST : SCOPE_UNIVERSE;
A.cast = RTC_UNICAST;
A.dest = RTD_DEVICE;
A.iface = new;
A.attrs = NULL;
a = rta_lookup(&A);
if (new->flags & IF_UNNUMBERED)
n = net_get(&master_table, 0, new->opposite, new->pxlen);
else
n = net_get(&master_table, 0, new->prefix, new->pxlen);
e = rte_get_temp(a);
e->net = n;
e->pflags = 0;
rte_update(n, p, e);
}
}
static struct proto *
dev_init(struct proto_config *c)
{
struct proto *p = proto_new(c, sizeof(struct proto));
p->if_notify = dev_if_notify;
return p;
}
static void
dev_preconfig(struct protocol *x, struct config *c)
{
struct rt_dev_config *p = proto_config_new(&proto_device, sizeof(struct rt_dev_config));
struct iface_patt *k = cfg_alloc(sizeof(struct iface_patt));
cf_dev_proto = &p->c;
p->c.preference = DEF_PREF_DIRECT;
init_list(&p->iface_list);
k->pattern = "*";
add_tail(&p->iface_list, &k->n);
}
struct protocol proto_device = {
name: "Device",
priority: 100,
preconfig: dev_preconfig,
init: dev_init,
};
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