netdev - Re: [PATCH v2] ipv4: Early TCP socket demux.

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Message-Id: <20120620.140121.1603737472432326278.davem@davemloft.net>
Date:	Wed, 20 Jun 2012 14:01:21 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	bhutchings@...arflare.com, shemminger@...tta.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH v2] ipv4: Early TCP socket demux.

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 20 Jun 2012 20:40:04 +0200

> If someone wants to tune its linux router, he probably already disables
> GRO because of various issues with too big packets.
> 
> GRO adds a significant cost to forwarding path.

No, Ben is right Eric.  GRO decreases the costs, because it means we
only need to make one forwarding/netfilter/classification decision for
N packets instead of 1.
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