linux-kernel - Re: [PATCH net-next v7 00/13] Introduce PHY listing and link

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Date: Thu, 15 Feb 2024 08:19:39 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com, Andrew Lunn
 <andrew@...n.ch>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>, Russell King <linux@...linux.org.uk>,
 linux-arm-kernel@...ts.infradead.org, Christophe Leroy
 <christophe.leroy@...roup.eu>, Herve Codina <herve.codina@...tlin.com>,
 Florian Fainelli <f.fainelli@...il.com>, Heiner Kallweit
 <hkallweit1@...il.com>, Vladimir Oltean <vladimir.oltean@....com>,
 Köry Maincent <kory.maincent@...tlin.com>, Jesse Brandeburg
 <jesse.brandeburg@...el.com>, Jonathan Corbet <corbet@....net>, Marek
 Behún <kabel@...nel.org>, Piergiorgio Beruto
 <piergiorgio.beruto@...il.com>, Oleksij Rempel <o.rempel@...gutronix.de>,
 Nicolò Veronese <nicveronese@...il.com>, Simon Horman
 <horms@...nel.org>, mwojtas@...omium.org
Subject: Re: [PATCH net-next v7 00/13] Introduce PHY listing and
 link_topology tracking

Hi Jakub,

On Wed, 14 Feb 2024 16:59:02 -0800
Jakub Kicinski <kuba@...nel.org> wrote:

> On Tue, 13 Feb 2024 16:04:17 +0100 Maxime Chevallier wrote:
> > This is V7 for the link topology addition, allowing to track all PHYs
> > that are linked to netdevices.
> > 
> > The main change in V7 is the protection of the main internal API
> > entrypoints (link_topo_init/cleanup, link_topo_add/del_phy) by
> > IS_REACHABLE(CONFIG_PHYLIB).
> > 
> > That's restrictive, but it looks difficult to do otherwise while still keep the
> > data structure opaque and not add dependency clutter with PHYLIB.
> > 
> > As you can tell, I'm unsure about this, so please don't hesitate to
> > comment on that part :)
> > 
> > The other changes are very minor, the only one is a call to netdev_put
> > in the .done() netlink callback.
> > 
> > As a remainder, here's what the PHY listings would look like :
> >  - eth0 has a 88x3310 acting as media converter, and an SFP module with
> >    an embedded 88e1111 PHY
> >  - eth2 has a 88e1510 PHY  
> 
> Needs a rebase, core has been busy lately:

Arg, I'll send a rebased version, sorry about that

Best regards,

Maxime