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Date: Wed, 24 Jan 2024 17:54:53 +0100
From: Andrew Lunn <andrew@lunn.ch>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Jakub Kicinski <kuba@kernel.org>, davem@davemloft.net,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	thomas.petazzoni@bootlin.com, Eric Dumazet <edumazet@google.com>,
	Paolo Abeni <pabeni@redhat.com>,
	Russell King <linux@armlinux.org.uk>,
	linux-arm-kernel@lists.infradead.org,
	Christophe Leroy <christophe.leroy@csgroup.eu>,
	Herve Codina <herve.codina@bootlin.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Vladimir Oltean <vladimir.oltean@nxp.com>,
	=?iso-8859-1?Q?K=F6ry?= Maincent <kory.maincent@bootlin.com>,
	Jesse Brandeburg <jesse.brandeburg@intel.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Marek =?iso-8859-1?Q?Beh=FAn?= <kabel@kernel.org>,
	Piergiorgio Beruto <piergiorgio.beruto@gmail.com>,
	Oleksij Rempel <o.rempel@pengutronix.de>,
	=?iso-8859-1?Q?Nicol=F2?= Veronese <nicveronese@gmail.com>,
	Simon Horman <horms@kernel.org>
Subject: Re: [PATCH net-next v5 07/13] net: ethtool: Introduce a command to
 list PHYs on an interface
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> > Another option might be to add PHY support to netdevsim. Add a debugfs
> > interface to allow you to create arbitrary PHY topologies? You can
> > then even add a test script.
> 
> Sorry for the delayed answer, I just took a few hours to give it a try,
> and I was able to spin some very basic PHY support for the netdevsim,
> allowing to attach arbitrary instances of fixed_phy devices. I can
> therefore use that as a mean of testing the dump operation, I'll try to
> include that in the next iteration, that should pave the way for some
> testability of more PHY stuff hopefully.

Great that you looked at this.

FYI: Jakub would like to see changes to netdevsim accompanied with
self tests making you of the features you add. There is also now a
build bot running the self tests against net-next, so these tests
should get run quite frequently.

       Andrew