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Message-ID: <1423053531.907.115.camel@edumazet-glaptop2.roam.corp.google.com> Date: Wed, 04 Feb 2015 04:38:51 -0800 From: Eric Dumazet <eric.dumazet@...il.com> To: Michal Kazior <michal.kazior@...to.com> Cc: linux-wireless <linux-wireless@...r.kernel.org>, Network Development <netdev@...r.kernel.org>, eyalpe@....mellanox.co.il Subject: Re: Throughput regression with `tcp: refine TSO autosizing` On Wed, 2015-02-04 at 13:22 +0100, Michal Kazior wrote: > On 4 February 2015 at 12:57, Eric Dumazet <eric.dumazet@...il.com> wrote: > > > To disable gso you would have to use : > > > > ethtool -K wlan1 gso off > > Oh, thanks! This works. However I can't turn it on: > > ; ethtool -K wlan1 gso on > Could not change any device features > > ..so I guess it makes no sense to re-run tests because: > > ; ethtool -k wlan1 | grep generic > tx-checksum-ip-generic: on [fixed] > generic-segmentation-offload: off [requested on] > generic-receive-offload: on > > And this seems to never change. GSO requires SG (Scatter Gather) Are you sure this hardware has no SG support ? -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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