netdev - Re: [PATCH net] net: Handle negative checksum offset in skb-checksum-help

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Date:	Mon, 21 Sep 2015 17:14:12 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	pshelar@...ira.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net] net: Handle negative checksum offset in
 skb-checksum-help

From: Pravin B Shelar <pshelar@...ira.com>
Date: Sun, 20 Sep 2015 23:53:17 -0700

> VXLAN device can receive skb with checksum partial. But the checksum
> offset could be in outer header which is pulled on receive.

Such a scenerio is a bug.

Anything that pulls off a header should use a utility function such
as skb_pull_rcsum() or skb_postpull_rcsum() to make sure this gets
fixed up properly.
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