From: Patrick McHardy <kaber@trash.net>
Date: Thu, 11 Feb 2010 11:27:09 +0000 (+0100)
Subject: netfilter: nf_nat: support mangling a single TCP packet multiple times
X-Git-Tag: v2.6.34-rc1~233^2~303^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=010c0b9f34a4c567b431f8b49a58b7332ed42e47;p=pandora-kernel.git

netfilter: nf_nat: support mangling a single TCP packet multiple times

nf_nat_mangle_tcp_packet() can currently only handle a single mangling
per window because it only maintains two sequence adjustment positions:
the one before the last adjustment and the one after.

This patch makes sequence number adjustment tracking in
nf_nat_mangle_tcp_packet() optional and allows a helper to manually
update the offsets after the packet has been fully handled.

Signed-off-by: Patrick McHardy <kaber@trash.net>
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