netdev - Re: [PATCH v5 net-next 1/5] net/ethtool: add netlink interface for the PLCA RS

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Date:   Sun, 11 Dec 2022 12:12:23 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Piergiorgio Beruto <piergiorgio.beruto@...il.com>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, Oleksij Rempel <o.rempel@...gutronix.de>
Subject: Re: [PATCH v5 net-next 1/5] net/ethtool: add netlink interface for
 the PLCA RS

> Given what I just said, what would you suggest to do?

I would return just the version part, not the whole register contents.

The nice thing about netlink is you can add extra attributes without
breaking the ABI. If that 0xA ever gains a meaning and more values, an
attribute for it can be added.

   Andrew