netdev - Re: [Patch net 1/3] ipv4: call __ip_options_echo() in cookie_v4

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Date:	Fri, 17 Oct 2014 12:18:21 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	xiyou.wangcong@...il.com
Cc:	netdev@...r.kernel.org, kkolasa@...soft.pl, edumazet@...gle.com,
	cwang@...pensource.com
Subject: Re: [Patch net 1/3] ipv4: call __ip_options_echo() in
 cookie_v4_check()

From: Cong Wang <xiyou.wangcong@...il.com>
Date: Wed, 15 Oct 2014 14:33:20 -0700

> From: Cong Wang <cwang@...pensource.com>
> 
> commit 971f10eca186cab238c49da ("tcp: better TCP_SKB_CB layout to reduce cache line misses")
> missed that cookie_v4_check() still calls ip_options_echo() which uses
> IPCB(). It should use TCPCB() at TCP layer, so call __ip_options_echo()
> instead.
> 
> Fixes: commit 971f10eca186cab238c49da ("tcp: better TCP_SKB_CB layout to reduce cache line misses")
> Cc: Krzysztof Kolasa <kkolasa@...soft.pl>
> Cc: Eric Dumazet <edumazet@...gle.com>
> Reported-by: Krzysztof Kolasa <kkolasa@...soft.pl>
> Tested-by: Krzysztof Kolasa <kkolasa@...soft.pl>
> Signed-off-by: Cong Wang <cwang@...pensource.com>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

Applied.
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