net: bridge: mcast: don't dump querier state if snooping is disabled

A minor improvement to avoid dumping mcast ctx querier state if snooping
is disabled for that context (either bridge or vlan).

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 0e5d6ba..9bdf126 100644 (file)
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -2943,6 +2943,10 @@ int br_multicast_dump_querier_state(struct sk_buff *skb,
        struct net_bridge_port *p;
        struct nlattr *nest;
 
+       if (!br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED) ||
+           br_multicast_ctx_vlan_global_disabled(brmctx))
+               return 0;
+
        nest = nla_nest_start(skb, nest_attr);
        if (!nest)
                return -EMSGSIZE;