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net: bridge: allow IPv6 when multicast flood is disabled 

Even with multicast flooding turned off, IPv6 ND should still work so
that IPv6 connectivity is provided. Allow this by continuing to flood
multicast traffic originated by us.

Fixes: b6cb5ac833 ("net: bridge: add per-port multicast flood flag")
Cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Mike Manning <mmanning@brocade.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mike Manning 2017-03-01 09:55:28 +00:00 committed by David S. Miller
parent 16c54ac903
commit 8953de2f02
1 changed files with 2 additions and 1 deletions
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3
net/bridge/br_forward.c
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@ -186,8 +186,9 @@ void br_flood(struct net_bridge *br, struct sk_buff *skb,
/* Do not flood unicast traffic to ports that turn it off */
if (pkt_type == BR_PKT_UNICAST && !(p->flags & BR_FLOOD))
continue;
/* Do not flood if mc off, except for traffic we originate */
if (pkt_type == BR_PKT_MULTICAST &&
!(p->flags & BR_MCAST_FLOOD))
!(p->flags & BR_MCAST_FLOOD) && skb->dev != br->dev)
continue;
/* Do not flood to ports that enable proxy ARP */