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

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Date:	Wed, 20 Jun 2012 20:40:04 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	David Miller <davem@...emloft.net>, shemminger@...tta.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH v2] ipv4: Early TCP socket demux.

On Wed, 2012-06-20 at 19:07 +0100, Ben Hutchings wrote:

> I don't know what you mean by 'have no use'.  It's enabled anyway, and I
> would expect that it's beneficial for some smaller routers.
> 

I believe vast majority of linux powered devices are more hosts,
not routers (ip_forward default value is 0 by the way)

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.



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