netdev - Re: [PATCH net-next v3] netfilter: Correct calculation using skb->tail and skb-network

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Message-Id: <20130531.163850.493455196018855311.davem@davemloft.net>
Date:	Fri, 31 May 2013 16:38:50 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	horms@...ge.net.au
Cc:	pablo@...filter.org, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org, gang.chen@...anux.com
Subject: Re: [PATCH net-next v3] netfilter: Correct calculation using
 skb->tail and skb-network_header

From: Simon Horman <horms@...ge.net.au>
Date: Fri, 31 May 2013 11:39:29 +0900

> This corrects an regression introduced by "net: Use 16bits for *_headers
> fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
> that case skb->tail will be a pointer whereas skb->network_header
> will be an offset from head. This is corrected by using wrappers that
> ensure that calculations are always made using pointers.
> 
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Reported-by: Chen Gang <gang.chen@...anux.com>
> Signed-off-by: Simon Horman <horms@...ge.net.au>

I've applied this directly to net-next, thanks Simon.
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