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Message-ID: <20240214165902.55bf3a04@kernel.org>
Date: Wed, 14 Feb 2024 16:59:02 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>
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
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:
Applying: net: phy: Introduce ethernet link topology representation
Using index info to reconstruct a base tree...
M MAINTAINERS
M drivers/net/phy/Makefile
M drivers/net/phy/phy_device.c
M include/linux/netdevice.h
M include/linux/phy.h
M net/core/dev.c
Falling back to patching base and 3-way merge...
Auto-merging net/core/dev.c
CONFLICT (content): Merge conflict in net/core/dev.c
Auto-merging include/linux/phy.h
Auto-merging include/linux/netdevice.h
Auto-merging drivers/net/phy/phy_device.c
Auto-merging drivers/net/phy/Makefile
Auto-merging MAINTAINERS
Recorded preimage for 'net/core/dev.c'
--
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