From: Cong Wang <cwang@twopensource.com>
Date: Thu, 12 Jun 2014 18:53:10 +0000 (-0700)
Subject: vxlan: use dev->needed_headroom instead of dev->hard_header_len
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~10^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2853af6a2ea1a;p=pandora-kernel.git

vxlan: use dev->needed_headroom instead of dev->hard_header_len

When we mirror packets from a vxlan tunnel to other device,
the mirror device should see the same packets (that is, without
outer header). Because vxlan tunnel sets dev->hard_header_len,
tcf_mirred() resets mac header back to outer mac, the mirror device
actually sees packets with outer headers

Vxlan tunnel should set dev->needed_headroom instead of
dev->hard_header_len, like what other ip tunnels do. This fixes
the above problem.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: stephen hemminger <stephen@networkplumber.org>
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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