netdev - Re: [PATCH net-next] net: flow_dissector: small optimizations in IPv4 dissect

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Message-Id: <20131108.133015.2000589866643088644.davem@davemloft.net>
Date:	Fri, 08 Nov 2013 13:30:15 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: flow_dissector: small optimizations in
 IPv4 dissect

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 07 Nov 2013 08:37:28 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> By moving code around, we avoid :
> 
> 1) A reload of iph->ihl (bit field, so needs a mask)
> 
> 2) A conditional test (replaced by a conditional mov on x86)
>    Fast path loads iph->protocol anyway.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied.
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