netdev - Re: [PATCH net-next v5 00/13] net: phy: Rework linkmodes handling in a dedicated file

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Message-ID: <92a9cb8d-fe6b-4389-9d65-64b668f1e221@redhat.com>
Date: Thu, 13 Mar 2025 10:13:50 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>, davem@...emloft.net,
 Andrew Lunn <andrew@...n.ch>, Jakub Kicinski <kuba@...nel.org>,
 Eric Dumazet <edumazet@...gle.com>, Russell King <linux@...linux.org.uk>,
 Heiner Kallweit <hkallweit1@...il.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 thomas.petazzoni@...tlin.com, linux-arm-kernel@...ts.infradead.org,
 Christophe Leroy <christophe.leroy@...roup.eu>,
 Herve Codina <herve.codina@...tlin.com>,
 Florian Fainelli <f.fainelli@...il.com>,
 Vladimir Oltean <vladimir.oltean@....com>,
 Köry Maincent <kory.maincent@...tlin.com>,
 Oleksij Rempel <o.rempel@...gutronix.de>, Simon Horman <horms@...nel.org>,
 Romain Gantois <romain.gantois@...tlin.com>
Subject: Re: [PATCH net-next v5 00/13] net: phy: Rework linkmodes handling in
 a dedicated file

On 3/7/25 6:35 PM, Maxime Chevallier wrote:
> Hello everyone,
> 
> This is V5 of the phy_caps series. In a nutshell, this series reworks the way
> we maintain the list of speed/duplex capablities for each linkmode so that we
> no longer have multiple definition of these associations.
> 
> That will help making sure that when people add new linkmodes in
> include/uapi/linux/ethtool.h, they don't have to update phylib and phylink as
> well, making the process more straightforward and less error-prone.
> 
> It also generalises the phy_caps interface to be able to lookup linkmodes
> from phy_interface_t, which is needed for the multi-port work I've been working
> on for a while.
> 
> This V5 addresse Russell's and Paolo's reviews, namely :
> 
>  - Error out when encountering an unknown SPEED_XXX setting
> 
>    It prints an error and fails to initialize phylib. I've tested by
>    introducing a dummy 1.6T speed, I guess it's only a matter of time
>    before that actually happens :)
> 
>  - Deal more gracefully with the fixed-link settings, keeping some level of
>    compatibility with what we had before by making sure we report a
>    single BaseT mode like before.
> 
> V1 : https://lore.kernel.org/netdev/20250222142727.894124-1-maxime.chevallier@bootlin.com/
> V2 : https://lore.kernel.org/netdev/20250226100929.1646454-1-maxime.chevallier@bootlin.com/
> V3 : https://lore.kernel.org/netdev/20250228145540.2209551-1-maxime.chevallier@bootlin.com/
> V4 : https://lore.kernel.org/netdev/20250303090321.805785-1-maxime.chevallier@bootlin.com/

LGTM, waiting an extra bit to allow explicit acks from the phy crew.

Thanks,

Paolo