netdev - Re: [PATCH net-next v3] selftests: drv-net: replace the nsim ring test with a drv-net one

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Message-ID: <e1f6841e-80fa-4288-9163-d196892432fe@lunn.ch>
Date: Wed, 29 Oct 2025 18:27:00 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
	pabeni@...hat.com, andrew+netdev@...n.ch, horms@...nel.org,
	shuah@...nel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next v3] selftests: drv-net: replace the nsim ring
 test with a drv-net one

On Wed, Oct 29, 2025 at 09:49:30AM -0700, Jakub Kicinski wrote:
> We are trying to move away from netdevsim-only tests and towards
> tests which can be run both against netdevsim and real drivers.
> 
> Replace the simple bash script we have for checking ethtool -g/-G
> on netdevsim with a Python test tweaking those params as well
> as channel count.
> 
> The new test is not exactly equivalent to the netdevsim one,
> but real drivers don't often support random ring sizes,
> let alone modifying max values via debugfs.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew