linux-kernel - Re: [PATCH net-next 2/9] ethtool: Expand Ethernet Power Equipment with PoE alongside PoDL

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Message-ID: <20231121051232.GE590719@pengutronix.de>
Date:   Tue, 21 Nov 2023 06:12:32 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Köry Maincent <kory.maincent@...tlin.com>,
        "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>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH net-next 2/9] ethtool: Expand Ethernet Power Equipment
 with PoE alongside PoDL

On Mon, Nov 20, 2023 at 11:14:32PM +0100, Andrew Lunn wrote:
> > > However, everything not PoDL PSE seems to be clause 33. So how about:
> > > 
> > > 	enum ethtool_podl_pse_admin_state podl_admin_control;
> > > 	enum ethtool_c33_pse_admin_state c33_admin_control;  
> > > 
> > > At least inside the kernel we use c22, c45, c37 etc. I'm not sure they
> > > are visible to userspace, but if we don't have a better name, maybe we
> > > have to use c33 in userspace as well.
> > > 
> > > I do think naming like this makes it clear we are talking about two
> > > parallel technologies, not a generic layer and then extensions for
> > > podl.
> > > 
> > > What do you think?
> > 
> > I'm OK with it.
> 
> Great.
> 
> > 
> > Köry, can you please include some kernel documentation in your patches?
> > Something like this. I hope it will help to clarify things :) :
> 
> This is good. I'm just wondering where to put it. Ideally we want to
> cross reference to it in both this header file, and in the netlink
> UAPI.

Documentation/networking/pse-pd/introduction.rst ?

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