rmap: Add hooks into zebra,ospf,rip for `match ip next-hop type blackhole`

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/ospfd/ospf_routemap.c b/ospfd/ospf_routemap.c
index ab2d5ae58..bb7e97bf7 100644
--- 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);