netdev - Re: [PATCH 3/3] ipv4: Fix packet size calculation for raw IPsec packets in __ip_append

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Date:	Thu, 09 Jun 2011 14:50:08 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	steffen.klassert@...unet.com
Cc:	herbert@...dor.hengli.com.au, netdev@...r.kernel.org
Subject: Re: [PATCH 3/3] ipv4: Fix packet size calculation for raw IPsec
 packets in __ip_append_data

From: Steffen Klassert <steffen.klassert@...unet.com>
Date: Mon, 6 Jun 2011 08:48:47 +0200

> We assume that transhdrlen is positive on the first fragment
> which is wrong for raw packets. So we don't add exthdrlen to the
> packet size for raw packets. This leads to a reallocation on IPsec
> because we have not enough headroom on the skb to place the IPsec
> headers. This patch fixes this by adding exthdrlen to the packet
> size whenever the send queue of the socket is empty. This issue was
> introduced with git commit 1470ddf7 (inet: Remove explicit write
> references to sk/inet in ip_append_data)
> 
> Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>

Applied, thanks.
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