/* Delete specified OSPF neighbor from interface. */
void
ospf_nbr_delete (struct ospf_neighbor *nbr)
{
struct ospf_interface *oi;
struct route_node *rn;
struct prefix p;
oi = nbr->oi;
/* Unlink ospf neighbor from the interface. */
p.family = AF_INET;
p.prefixlen = IPV4_MAX_BITLEN;
p.u.prefix4 = nbr->src;
rn = route_node_lookup (oi->nbrs, &p);
if (rn)
{
if (rn->info)
{
rn->info = NULL;
route_unlock_node (rn);
}
else
zlog_info ("Can't find neighbor %s in the interface %s",
inet_ntoa (nbr->src), IF_NAME (oi));
route_unlock_node (rn);
}
/* Free ospf_neighbor structure. */
ospf_nbr_free (nbr);
}
/* Delete specified OSPF neighbor from interface. */
void ospf_nbr_delete(struct ospf_neighbor *nbr)
{
struct ospf_interface *oi;
struct route_node *rn;
struct prefix p;
oi = nbr->oi;
/* get appropriate prefix 'key' */
ospf_nbr_key(oi, nbr, &p);
rn = route_node_lookup(oi->nbrs, &p);
if (rn) {
/* If lookup for a NBR succeeds, the leaf route_node could
* only exist because there is (or was) a nbr there.
* If the nbr was deleted, the leaf route_node should have
* lost its last refcount too, and be deleted.
* Therefore a looked-up leaf route_node in nbrs table
* should never have NULL info.
*/
assert(rn->info);
if (rn->info) {
rn->info = NULL;
route_unlock_node(rn);
} else
zlog_info("Can't find neighbor %s in the interface %s",
inet_ntoa(nbr->src), IF_NAME(oi));
route_unlock_node(rn);
}
/* Free ospf_neighbor structure. */
ospf_nbr_free(nbr);
}
/* Delete specified OSPF neighbor from interface. */
void ospf_nbr_delete(struct ospf_neighbor *nbr)
{
struct ospf_interface *oi;
struct route_node *rn;
struct prefix p;
oi = nbr->oi;
/* get appropriate prefix 'key' */
ospf_nbr_key(oi, nbr, &p);
rn = route_node_lookup(oi->nbrs, &p);
if (rn) {
/* If lookup for a NBR succeeds, the leaf route_node could
* only exist because there is (or was) a nbr there.
* If the nbr was deleted, the leaf route_node should have
* lost its last refcount too, and be deleted.
* Therefore a looked-up leaf route_node in nbrs table
* should never have NULL info.
*/
assert(rn->info);
if (rn->info) {
rn->info = NULL;
route_unlock_node(rn);
} else
zlog_info("Can't find neighbor %s in the interface %s",
inet_ntoa(nbr->src), IF_NAME(oi));
route_unlock_node(rn);
} else {
/*
* This neighbor was not found, but before we move on and
* free the neighbor structre, make sure that it was not
* indexed incorrectly and ended up in the "worng" place
*/
/* Reverse the lookup rules */
if (oi->type == OSPF_IFTYPE_VIRTUALLINK
|| oi->type == OSPF_IFTYPE_POINTOPOINT)
p.u.prefix4 = nbr->src;
else
p.u.prefix4 = nbr->router_id;
rn = route_node_lookup(oi->nbrs, &p);
if (rn) {
/* We found the neighbor!
* Now make sure it is not the exact same neighbor
* structure that we are about to free
*/
if (nbr == rn->info) {
/* Same neighbor, drop the reference to it */
rn->info = NULL;
route_unlock_node(rn);
}
route_unlock_node(rn);
}
}
/* Free ospf_neighbor structure. */
ospf_nbr_free(nbr);
}
