netdev - Re: Misuse of LRO, how widespread

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Message-ID: <20101206142715.0d296b25@nehalam>
Date:	Mon, 6 Dec 2010 14:27:15 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Dimitris Michailidis <dm@...lsio.com>
Cc:	David Miller <davem@...emloft.net>,
	Olof Johansson <olof@...om.net>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Divy Le Ray <divy@...lsio.com>, netdev@...r.kernel.org
Subject: Re: Misuse of LRO, how widespread

On Mon, 06 Dec 2010 13:15:42 -0800
Dimitris Michailidis <dm@...lsio.com> wrote:

> Stephen Hemminger wrote:
> > I inspected all drivers in net-next to see which drivers are using
> > LRO and which ones are broken. Most concerning is that Chelsio
> > and Solarflare drivers ignore ETH_FLAG_LRO.
> > 
> > The ones that are using LRO but allow disabling it:
> >   qlcnic, netxen, mv643, s2io, myi10ge, bnx2x, ixgbe, vmxnet3
> > 
> > One driver seems confused about LRO vs GRO:
> >   mlx4 - comments about LRO and depends on LRO but driver is using GRO
> > 
> > Drivers with not using ethtool interface to disable LRO:
> >   pasemi_mac, sfc, ehea, cxgb3, cxgb4
> 
> cxgb4 uses GRO, not LRO.

Ok. but cxgb3 still uses LRO (or it least calls it lro).

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