net: if: No need to join mcast groups if interface IPv6 is disabled (03885d1c) · Commits · Wenxi XU / zephyr

If IPv6 is not enabled for a given network interface, then there is no need to try to join IPv6 multicast groups as it will just cause an error print which is pointless in this case. Signed-off-by:

Jukka Rissanen <jukka.rissanen@nordicsemi.no>

subsys/net/ip/net_if.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -1105,6 +1105,10 @@ static void join_mcast_allnodes(struct net_if *iface)
		struct in6_addr addr;
		int ret;

		if (iface->config.ip.ipv6 == NULL) {
		return;
		}

		net_ipv6_addr_create_ll_allnodes_mcast(&addr);

		ret = net_ipv6_mld_join(iface, &addr);
		@@ -1121,6 +1125,10 @@ static void join_mcast_solicit_node(struct net_if *iface,
		struct in6_addr addr;
		int ret;

		if (iface->config.ip.ipv6 == NULL) {
		return;
		}

		/* Join to needed multicast groups, RFC 4291 ch 2.8 */
		net_ipv6_addr_create_solicited_node(my_addr, &addr);

		@@ -1161,6 +1169,10 @@ static void join_mcast_nodes(struct net_if iface, struct in6_addr addr)
		{
		enum net_l2_flags flags = 0;

		if (iface->config.ip.ipv6 == NULL) {
		return;
		}

		flags = l2_flags_get(iface);
		if (flags & NET_L2_MULTICAST) {
		join_mcast_allnodes(iface);

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