From 7371e0221c7721a1486fef745abaa8ae84571621 Mon Sep 17 00:00:00 2001
From: Tom Herbert <therbert@google.com>
Date: Fri, 3 Oct 2014 15:48:07 -0700
Subject: [PATCH] ip_tunnel: Account for secondary encapsulation header in
 max_headroom

When adjusting max_header for the tunnel interface based on egress
device we need to account for any extra bytes in secondary encapsulation
(e.g. FOU).

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed