Merge pull request #4589 from ton31337/fix/match_ip_next_hop_type_allows_without_args

[mirror_frr.git] / ospfd / ospf_routemap.c

diff --git a/ospfd/ospf_routemap.c b/ospfd/ospf_routemap.c
index ab2d5ae5844cec5584445526bfb5a768baeb76f6..bb7e97bf7beba4d50026a673599d8ea84bd79682 100644 (file)
--- a/ospfd/ospf_routemap.c
+++ b/ospfd/ospf_routemap.c
@@ -210,6 +210,40 @@ struct route_map_rule_cmd route_match_ip_next_hop_prefix_list_cmd = {
        route_match_ip_next_hop_prefix_list_compile,
        route_match_ip_next_hop_prefix_list_free};
 
+/* `match ip next-hop type <blackhole>' */
+
+static route_map_result_t
+route_match_ip_next_hop_type(void *rule, const struct prefix *prefix,
+                            route_map_object_t type, void *object)
+{
+       struct external_info *ei = object;
+
+       if (type == RMAP_OSPF && prefix->family == AF_INET) {
+               ei = (struct external_info *)object;
+               if (!ei)
+                       return RMAP_DENYMATCH;
+
+               if (ei->nexthop.s_addr == INADDR_ANY && !ei->ifindex)
+                       return RMAP_MATCH;
+       }
+       return RMAP_NOMATCH;
+}
+
+static void *route_match_ip_next_hop_type_compile(const char *arg)
+{
+       return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
+}
+
+static void route_match_ip_next_hop_type_free(void *rule)
+{
+       XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
+}
+
+static struct route_map_rule_cmd route_match_ip_next_hop_type_cmd = {
+       "ip next-hop type", route_match_ip_next_hop_type,
+       route_match_ip_next_hop_type_compile,
+       route_match_ip_next_hop_type_free};
+
 /* `match ip address IP_ACCESS_LIST' */
 /* Match function should return 1 if match is success else return
    zero. */
@@ -566,6 +600,9 @@ void ospf_route_map_init(void)
        route_map_match_ip_next_hop_prefix_list_hook(generic_match_add);
        route_map_no_match_ip_next_hop_prefix_list_hook(generic_match_delete);
 
+       route_map_match_ip_next_hop_type_hook(generic_match_add);
+       route_map_no_match_ip_next_hop_type_hook(generic_match_delete);
+
        route_map_match_tag_hook(generic_match_add);
        route_map_no_match_tag_hook(generic_match_delete);
 
@@ -579,6 +616,7 @@ void ospf_route_map_init(void)
        route_map_install_match(&route_match_ip_next_hop_prefix_list_cmd);
        route_map_install_match(&route_match_ip_address_cmd);
        route_map_install_match(&route_match_ip_address_prefix_list_cmd);
+       route_map_install_match(&route_match_ip_next_hop_type_cmd);
        route_map_install_match(&route_match_interface_cmd);
        route_map_install_match(&route_match_tag_cmd);