From: Cong Wang <amwang@redhat.com>
Date: Wed, 7 Aug 2013 08:35:45 +0000 (+0800)
Subject: vxlan: fix a regression of igmp join
X-Git-Tag: v3.11-rc6~11^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=614334df2d6dcc5e15eaa8066a649535d50f329b;p=pandora-kernel.git

vxlan: fix a regression of igmp join

This is a regression introduced by:

	commit 3fc2de2faba387218bdf9dbc6b13f513ac3b060a
	Author: stephen hemminger <stephen@networkplumber.org>
	Date:   Thu Jul 18 08:40:15 2013 -0700

	    vxlan: fix igmp races

Before this commit, the old code was:

       if (vxlan_group_used(vn, vxlan->default_dst.remote_ip))
               ip_mc_join_group(sk, &mreq);
       else
               ip_mc_leave_group(sk, &mreq);

therefore we shoud check vxlan_group_used(), not its opposite,
for igmp_join.

Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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