netdev - Re: net: Enable TSO if supported by at least one device

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Message-Id: <20080908.161016.259741666.davem@davemloft.net>
Date:	Mon, 08 Sep 2008 16:10:16 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	netdev@...r.kernel.org
Subject: Re: net: Enable TSO if supported by at least one device

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Mon, 8 Sep 2008 18:42:03 +1000

> net: Enable TSO if supported by at least one device
> 
> As it stands users of netdev_compute_features (e.g., bridges/bonding)
> will only enable TSO if all consituent devices support it.  This
> is unnecessarily pessimistic since even on devices that do not
> support hardware TSO and SG, emulated TSO still performs to a par
> with TSO off.
> 
> This patch enables TSO if at least on constituent device supports
> it in hardware.
> 
> The direct beneficiaries will be virtualisation that uses bridging
> since this means that TSO will always be enabled for communication
> from the host to the guests.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Applied to net-next-2.6, thanks Herbert.
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