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From: Maxime Chevallier <maxime.chevallier@bootlin.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: davem@davemloft.net, "Jakub Kicinski" <kuba@kernel.org>,
	"Eric Dumazet" <edumazet@google.com>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Russell King" <linux@armlinux.org.uk>,
	"Heiner Kallweit" <hkallweit1@gmail.com>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	thomas.petazzoni@bootlin.com,
	"Christophe Leroy" <christophe.leroy@csgroup.eu>,
	"Herve Codina" <herve.codina@bootlin.com>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Vladimir Oltean" <vladimir.oltean@nxp.com>,
	"Köry Maincent" <kory.maincent@bootlin.com>,
	"Marek Behún" <kabel@kernel.org>,
	"Oleksij Rempel" <o.rempel@pengutronix.de>,
	"Nicolò Veronese" <nicveronese@gmail.com>,
	"Simon Horman" <horms@kernel.org>,
	mwojtas@chromium.org,
	"Romain Gantois" <romain.gantois@bootlin.com>,
	"Daniel Golle" <daniel@makrotopia.org>,
	"Dimitri Fedrau" <dimitri.fedrau@liebherr.com>,
	"Frank Wunderlich" <frank.wunderlich@linux.dev>
Subject: Re: [PATCH net-next v10 6/9] net: phy: phy_port: Store information about a MII port's vacant state
Date: Fri, 15 May 2026 09:22:29 +0200	[thread overview]
Message-ID: <c68f3abd-7a3d-4d37-9589-02433bbd5c5c@bootlin.com> (raw)
In-Reply-To: <97cd33a0-ee74-4f64-b11a-bb5b88bce79a@lunn.ch>

Hi Andrew,

On 5/14/26 15:58, Andrew Lunn wrote:
>> We have information about what MII they can handle, however we don't
>> store anything about whether they are currently connected to an SFP
>> module or not. As phy_port aims at listing the front-facing ports, let's
>> store an "vacant" bit to know whether or not a MII port is currently
>> vacant (i.e. there's no module in the SFP cage), or not (i.e.
>> there's an SFP module).
> 
> vacant == False actually means a bit more than there is a module in
> the cage. It also means that, so far, we have not had any errors
> trying to use the module. If there is an error, we might have a module
> physically in the cage, but vacant == True.

This is a good point. Even with an error, we should have vacant = false.

TBH I'm unsure how to name this, vacant may not be the best word there, 
but I'm struggling to find a better term.

maybe "empty" ?

> We should be careful with the wording, both in the commit message, and
> here:
> 
>> + * @vacant: For MII ports, indicates whether or not the port has a connection to
>> + *	    another device (e.g. for SFP ports, indicates the absence or presence
>> + *	    of an SFP module)
>>    */

I'll reword this along with the netlink doc. Thank you very very much 
for the reviews,

Maxime

> 
>      Andrew


  reply	other threads:[~2026-05-15  7:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-13 13:05 [PATCH net-next v10 0/9] net: phy_port: SFP modules representation and phy_port listing Maxime Chevallier
2026-05-13 13:05 ` [PATCH net-next v10 1/9] net: phy: phy_link_topology: Add a helper for opportunistic alloc Maxime Chevallier
2026-05-13 13:05 ` [PATCH net-next v10 2/9] net: phy: phy_link_topology: Track ports in phy_link_topology Maxime Chevallier
2026-05-13 13:05 ` [PATCH net-next v10 3/9] net: phylink: Register a phy_port for MAC-driven SFP cages Maxime Chevallier
2026-05-14 13:43   ` Andrew Lunn
2026-05-13 13:05 ` [PATCH net-next v10 4/9] net: phy: Create SFP phy_port before registering upstream Maxime Chevallier
2026-05-14 13:46   ` Andrew Lunn
2026-05-13 13:05 ` [PATCH net-next v10 5/9] net: phy: Represent PHY-less SFP modules with phy_port Maxime Chevallier
2026-05-14 13:49   ` Andrew Lunn
2026-05-13 13:05 ` [PATCH net-next v10 6/9] net: phy: phy_port: Store information about a MII port's vacant state Maxime Chevallier
2026-05-14 13:58   ` Andrew Lunn
2026-05-15  7:22     ` Maxime Chevallier [this message]
2026-05-15 13:12       ` Andrew Lunn
2026-05-15 16:22         ` Maxime Chevallier
2026-05-13 13:05 ` [PATCH net-next v10 7/9] net: phy: phy_link_topology: Add a helper to retrieve ports Maxime Chevallier
2026-05-14 13:59   ` Andrew Lunn
2026-05-13 13:05 ` [PATCH net-next v10 8/9] netlink: specs: Add ethernet port listing with ethtool Maxime Chevallier
2026-05-14 14:05   ` Andrew Lunn
2026-05-13 13:05 ` [PATCH net-next v10 9/9] net: ethtool: Introduce ethtool command to list ports Maxime Chevallier
2026-05-14 14:07   ` Andrew Lunn

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