From e5eb4e30a51236079fb22bb9f75fcd31915b03c6 Mon Sep 17 00:00:00 2001
From: Tom Herbert <therbert@google.com>
Date: Sat, 14 Jun 2014 23:24:28 -0700
Subject: [PATCH] net: add skb_pop_rcv_encapsulation

This function is used by UDP encapsulation protocols in RX when
crossing encapsulation boundary. If ip_summed is set to
CHECKSUM_UNNECESSARY and encapsulation is not set, change to
CHECKSUM_NONE since the checksum has not been validated within the
encapsulation. Clears csum_valid by the same rationale.

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