netdev - Re: [PATCH] net: l2tp_eth: use LLTX to avoid LOCKDEP splats

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Date:	Tue, 26 Jun 2012 16:43:06 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	denys@...p.net.lb, netdev@...r.kernel.org, honkiko@...il.com,
	jchapman@...alix.com, romieu@...zoreil.com
Subject: Re: [PATCH] net: l2tp_eth: use LLTX to avoid LOCKDEP splats

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 25 Jun 2012 17:35:45 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> Denys Fedoryshchenko reported a LOCKDEP issue with l2tp code.
 ...
> It appears that like most virtual devices, l2tp should be converted to
> LLTX mode.
> 
> This patch takes care of statistics using atomic_long in both RX and TX
> paths, and fix a bug in l2tp_eth_dev_recv(), which was caching skb->data
> before a pskb_may_pull() call.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: Denys Fedoryshchenko <denys@...p.net.lb>
> Cc: James Chapman <jchapman@...alix.com>
> Cc: Hong zhi guo <honkiko@...il.com>
> Cc: Francois Romieu <romieu@...zoreil.com>
> ---
> Should be applied after "net: l2tp_eth: fix l2tp_eth_dev_xmit race"

Applied, thanks Eric.
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