netdev - Re: [PATCH net-next] flow_dissector: use a 64bit load/store

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Message-Id: <20111129.132310.605559828840149508.davem@davemloft.net>
Date:	Tue, 29 Nov 2011 13:23:10 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] flow_dissector: use a 64bit load/store

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 29 Nov 2011 07:30:35 +0100

> [PATCH net-next] flow_dissector: use a 64bit load/store
> 
> gcc compiler is smart enough to use a single load/store if we
> memcpy(dptr, sptr, 8) on x86_64, regardless of
> CONFIG_CC_OPTIMIZE_FOR_SIZE
> 
> In IP header, daddr immediately follows saddr, this wont change in the
> future. We only need to make sure our flow_keys (src,dst) fields wont
> break the rule.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied.
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