net: ipv6: mld: use proper MLDv2 modes

According to the RFC, MODE_IS_INCLUDE/MODE_IS_EXCLUDE codes should be
used while sendling Multicast Listener Reports in response to a query.
When performing a transition between states (e.g., when joining or
leaving a multicast group) CHANGE_TO_INCLUDE_MODE/CHANGE_TO_EXCLUDE_MODE
have to be used.

Signed-off-by: Konrad Derda <[email protected]>

Author: kderda

subsys/net/ip/ipv6_mld.c

@@ -234,7 +234,7 @@ int net_ipv6_mld_join(struct net_if *iface, const struct in6_addr *addr)
 		return -ENETDOWN;
 	}
 
-	ret = net_ipv6_mld_send_single(iface, addr, NET_IPV6_MLDv2_MODE_IS_EXCLUDE);
+	ret = net_ipv6_mld_send_single(iface, addr, NET_IPV6_MLDv2_CHANGE_TO_EXCLUDE_MODE);
 	if (ret < 0) {
 		return ret;
 	}
@@ -268,7 +268,7 @@ int net_ipv6_mld_leave(struct net_if *iface, const struct in6_addr *addr)
 		return 0;
 	}
 
-	ret = net_ipv6_mld_send_single(iface, addr, NET_IPV6_MLDv2_MODE_IS_INCLUDE);
+	ret = net_ipv6_mld_send_single(iface, addr, NET_IPV6_MLDv2_CHANGE_TO_INCLUDE_MODE);
 	if (ret < 0) {
 		return ret;
 	}

subsys/net/ip/route.c

@@ -805,8 +805,8 @@ static void propagate_mld_event(struct net_route_entry_mcast *route, bool route_
 	/* Apply only for complete addresses */
 	if (route->prefix_len == 128) {
 		mld_event.addr = &route->group;
-		mld_event.mode = route_added ? NET_IPV6_MLDv2_MODE_IS_EXCLUDE :
-					       NET_IPV6_MLDv2_MODE_IS_INCLUDE;
+		mld_event.mode = route_added ? NET_IPV6_MLDv2_CHANGE_TO_EXCLUDE_MODE :
+					       NET_IPV6_MLDv2_CHANGE_TO_INCLUDE_MODE;
 
 		net_if_foreach(send_mld_event, &mld_event);
 	}