From 91269e390d062b526432f2ef1352b8df82e0e0bc Mon Sep 17 00:00:00 2001
From: Li RongQing <roy.qing.li@gmail.com>
Date: Thu, 16 Oct 2014 09:17:18 +0800
Subject: [PATCH] vxlan: using pskb_may_pull as early as possible

pskb_may_pull should be used to check if skb->data has enough space,
skb->len can not ensure that.

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed