linux-kernel - Re: [PATCH ethtool-next v3 3/3] ethtool: Introduce a command to list PHYs

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Message-ID: <20240905174336.1ba5d8d7@fedora.home>
Date: Thu, 5 Sep 2024 17:43:36 +0200
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: davem@...emloft.net, Michal Kubecek <mkubecek@...e.cz>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 thomas.petazzoni@...tlin.com, Andrew Lunn <andrew@...n.ch>, Jakub Kicinski
 <kuba@...nel.org>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>, Russell King <linux@...linux.org.uk>, Christophe Leroy
 <christophe.leroy@...roup.eu>, Herve Codina <herve.codina@...tlin.com>,
 Florian Fainelli <f.fainelli@...il.com>, Heiner Kallweit
 <hkallweit1@...il.com>, Oleksij Rempel <o.rempel@...gutronix.de>, Simon
 Horman <horms@...nel.org>
Subject: Re: [PATCH ethtool-next v3 3/3] ethtool: Introduce a command to
 list PHYs

Hi everyone,

On Thu,  5 Sep 2024 12:24:16 +0200
Maxime Chevallier <maxime.chevallier@...tlin.com> wrote:

> It is now possible to list all Ethernet PHYs that are present behind a
> given interface, since the following linux commit :
> 63d5eaf35ac3 ("net: ethtool: Introduce a command to list PHYs on an interface")
> 
> This command relies on the netlink DUMP command to list them, by allowing to
> pass an interface name/id as a parameter in the DUMP request to only
> list PHYs on one interface.
> 
> Therefore, we introduce a new helper function to prepare a interface-filtered
> dump request (the filter can be empty, to perform an unfiltered dump),
> and then uses it to implement PHY enumeration through the --show-phys
> command.
> 
> Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Damn I just realised the netlink dependency was left-out of the
patchset, I'll fix that in the next revision... sorry for the noise.

Maxime