static struct rip_peer *
rip2PeerLookup (struct variable *v, oid name[], size_t *length,
struct in_addr *addr, int exact)
{
int len;
struct rip_peer *peer;
if (exact)
{
/* Check the length. */
if (*length - v->namelen != sizeof (struct in_addr) + 1)
return NULL;
oid2in_addr (name + v->namelen, sizeof (struct in_addr), addr);
peer = rip_peer_lookup (addr);
if (peer->domain == name[v->namelen + sizeof (struct in_addr)])
return peer;
return NULL;
}
else
{
len = *length - v->namelen;
if (len > 4) len = 4;
oid2in_addr (name + v->namelen, len, addr);
len = *length - v->namelen;
peer = rip_peer_lookup (addr);
if (peer)
{
if ((len < sizeof (struct in_addr) + 1) ||
(peer->domain > name[v->namelen + sizeof (struct in_addr)]))
{
oid_copy_addr (name + v->namelen, &peer->addr,
sizeof (struct in_addr));
name[v->namelen + sizeof (struct in_addr)] = peer->domain;
*length = sizeof (struct in_addr) + v->namelen + 1;
return peer;
}
}
peer = rip_peer_lookup_next (addr);
if (! peer)
return NULL;
oid_copy_addr (name + v->namelen, &peer->addr,
sizeof (struct in_addr));
name[v->namelen + sizeof (struct in_addr)] = peer->domain;
*length = sizeof (struct in_addr) + v->namelen + 1;
return peer;
}
return NULL;
}
/* Get RIP peer. At the same time update timeout thread. */
static struct rip_peer *
rip_peer_get (struct in_addr *addr)
{
struct rip_peer *peer;
peer = rip_peer_lookup (addr);
if (peer)
{
if (peer->t_timeout)
thread_cancel (peer->t_timeout);
}
else
{
peer = rip_peer_new ();
peer->addr = *addr;
listnode_add_sort (peer_list, peer);
}
/* Update timeout thread. */
peer->t_timeout = thread_add_timer (master, rip_peer_timeout, peer,
RIP_PEER_TIMER_DEFAULT);
/* Last update time set. */
time (&peer->uptime);
return peer;
}
u_int32_t
rip_peer_getseqno (struct in_addr *from)
{
struct rip_peer *peer = rip_peer_lookup (from);
return peer ? peer->seqno : 0;
}
