diff options
Diffstat (limited to 'ospfd/ospf_route.c')
| -rw-r--r-- | ospfd/ospf_route.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/ospfd/ospf_route.c b/ospfd/ospf_route.c index c3acba34..eb7829ac 100644 --- a/ospfd/ospf_route.c +++ b/ospfd/ospf_route.c @@ -126,6 +126,31 @@ ospf_route_table_free (struct route_table *rt) route_table_finish (rt); } +/* If a prefix exists in the new routing table, then return 1, + otherwise return 0. Since the ZEBRA-RIB does an implicit + withdraw, it is not necessary to send a delete, an add later + will act like an implicit delete. */ +static int +ospf_route_exist_new_table (struct route_table *rt, struct prefix_ipv4 *prefix) +{ + struct route_node *rn; + + assert (rt); + assert (prefix); + + rn = route_node_lookup (rt, (struct prefix *) prefix); + if (!rn) { + return 0; + } + route_unlock_node (rn); + + if (!rn->info) { + return 0; + } + + return 1; +} + /* If a prefix and a nexthop match any route in the routing table, then return 1, otherwise return 0. */ int @@ -223,13 +248,13 @@ ospf_route_delete_uniq (struct route_table *rt, struct route_table *cmprt) { if (or->type == OSPF_DESTINATION_NETWORK) { - if (! ospf_route_match_same (cmprt, - (struct prefix_ipv4 *) &rn->p, or)) + if (! ospf_route_exist_new_table (cmprt, + (struct prefix_ipv4 *) &rn->p)) ospf_zebra_delete ((struct prefix_ipv4 *) &rn->p, or); } else if (or->type == OSPF_DESTINATION_DISCARD) - if (! ospf_route_match_same (cmprt, - (struct prefix_ipv4 *) &rn->p, or)) + if (! ospf_route_exist_new_table (cmprt, + (struct prefix_ipv4 *) &rn->p)) ospf_zebra_delete_discard ((struct prefix_ipv4 *) &rn->p); } } |