From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: Deadlock, L2TP over IP are not working, 3.4.1
Date: Fri, 08 Jun 2012 18:04:55 +0200
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Cc: Benjamin LaHaise <bcrl@kvack.org>,
	Francois Romieu <romieu@fr.zoreil.com>, davem@davemloft.net,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
To: Denys Fedoryshchenko <denys@visp.net.lb>
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On Fri, 2012-06-08 at 18:56 +0300, Denys Fedoryshchenko wrote:

> Right now i am routing around 700Mbps over there, and noticed some 
> problem with pskb_expand_head,
> but that's separate question i will ask, if i will not be able to sort 
> it out by myself.
> 

Before spending too much time on this, make sure you use a kernel
including commit 617c8c11236 ( skb: avoid unnecessary reallocations in
__skb_cow )