netdev - Re: [PATCH net 1/1] e1000e: Disable TSO on i219-LM card to increase speed

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Message-ID: <ZD/zDjclpxL1o2mp@corigine.com>
Date:   Wed, 19 Apr 2023 15:56:30 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     Tony Nguyen <anthony.l.nguyen@...el.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, netdev@...r.kernel.org,
        Sebastian Basierski <sebastianx.basierski@...el.com>,
        kai.heng.feng@...onical.com, sasha.neftin@...el.com,
        Mateusz Palczewski <mateusz.palczewski@...el.com>,
        Naama Meir <naamax.meir@...ux.intel.com>
Subject: Re: [PATCH net 1/1] e1000e: Disable TSO on i219-LM card to increase
 speed

On Mon, Apr 17, 2023 at 01:53:45PM -0700, Tony Nguyen wrote:
> From: Sebastian Basierski <sebastianx.basierski@...el.com>
> 
> While using i219-LM card currently it was only possible to achieve
> about 60% of maximum speed due to regression introduced in Linux 5.8.
> This was caused by TSO not being disabled by default despite commit
> f29801030ac6 ("e1000e: Disable TSO for buffer overrun workaround").
> Fix that by disabling TSO during driver probe.
> 
> Fixes: f29801030ac6 ("e1000e: Disable TSO for buffer overrun workaround")
> Signed-off-by: Sebastian Basierski <sebastianx.basierski@...el.com>
> Signed-off-by: Mateusz Palczewski <mateusz.palczewski@...el.com>
> Tested-by: Naama Meir <naamax.meir@...ux.intel.com>
> Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>

Reviewed-by: Simon Horman <simon.horman@...igine.com>