netdev - Re: [PATCH net-next v2 3/8] net: pse-pd: Introduce PSE types enumeration

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Date: Sun, 3 Dec 2023 19:38:04 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Kory Maincent <kory.maincent@...tlin.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Russ Weight <russ.weight@...ux.dev>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Oleksij Rempel <o.rempel@...gutronix.de>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, devicetree@...r.kernel.org,
	Dent Project <dentproject@...uxfoundation.org>
Subject: Re: [PATCH net-next v2 3/8] net: pse-pd: Introduce PSE types
 enumeration

> +/**
> + * enum - Types of PSE controller.
> + *
> + * @PSE_UNKNOWN: Type of PSE controller is unknown
> + * @PSE_PODL: PSE controller which support PoDL
> + * @PSE_C33: PSE controller which support Clause 33 (PoE)
> + */
> +enum {
> +	PSE_UNKNOWN = BIT(0),
> +	PSE_PODL = BIT(1),
> +	PSE_C33 = BIT(2),
> +};

Maybe this should be in the netlink API?

I think you can imply it by looking at what properties are in the
netlink reply, but having it explicitly is probably better.
ethtool(1) can default to PSE_PODL if the property is missing for an
older kernel.

      Andrew