From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: [PATCH 0/4] Prevent UDP tunnels from operating on garbage socket
Date: Sun, 05 Apr 2015 22:18:47 -0400 (EDT)
Message-ID: <20150405.221847.2119086885797169021.davem@davemloft.net>
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Cc: netfilter-devel@vger.kernel.org, pablo@netfilter.org,
	hannes@stressinduktion.org, jiri@resnulli.us
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So this should do the rest of the work such that when we encapsulate
into a UDP tunnel, the output path works on the UDP tunnel's socket
rather than skb->sk.

Part of this work is based upon changes done by Jiri Pirko some time
ago.

Basically the first step is to pass the socket through the nf_hook
okfn(), and then next we do the same for the UDP tunnel xmit routines.

Signed-off-by: David S. Miller <davem@davemloft.net>