linux-kernel - Re: [PATCH net-next v12 00/13] Add support for PSE budget evaluation strategy

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Message-ID: <20250609103622.7e7e471d@kmaincent-XPS-13-7390>
Date: Mon, 9 Jun 2025 10:36:22 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: Gal Pressman <gal@...dia.com>
Cc: Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>, Oleksij
 Rempel <o.rempel@...gutronix.de>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Jonathan Corbet <corbet@....net>, Donald Hunter <donald.hunter@...il.com>,
 Rob Herring <robh@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>, Simon
 Horman <horms@...nel.org>, Heiner Kallweit <hkallweit1@...il.com>, Russell
 King <linux@...linux.org.uk>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
 Mark Brown <broonie@...nel.org>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org,
 linux-doc@...r.kernel.org, Kyle Swenson <kyle.swenson@....tech>, Dent
 Project <dentproject@...uxfoundation.org>, kernel@...gutronix.de, Maxime
 Chevallier <maxime.chevallier@...tlin.com>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Krzysztof Kozlowski
 <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH net-next v12 00/13] Add support for PSE budget
 evaluation strategy

Le Sun, 8 Jun 2025 09:17:59 +0300,
Gal Pressman <gal@...dia.com> a écrit :

> On 28/05/2025 10:31, Paolo Abeni wrote:
> > I'm sorry, even if this has been posted (just) before the merge window,
> > I think an uAPI extension this late is a bit too dangerous, please
> > repost when net-next will reopen after the merge window.  
> 
> Are all new uapi changes expected to come with a test that exercises the
> functionality?

I don't think so and I don't think it is doable for now on PSE. There is nothing
that could get the PSE control of a dummy PSE controller driver. We need either
the support for a dummy PHY driver similarly to netdevsim or the support for the
MDI ports.
By luck Maxime Chevallier is currently working on both of these tasks and had
already sent several times the patch series for the MDI port support.

-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com