linux-kernel - Re: [PATCH net-next v1] ethtool: ethtool_get_drvinfo: populate drvinfo fields even if callback exits

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Message-ID: <Y2vozcC2ahbhAvhM@unreal>
Date:   Wed, 9 Nov 2022 19:52:13 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Vincent Mailhol <mailhol.vincent@...adoo.fr>
Cc:     netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Hao Chen <chenhao288@...ilicon.com>,
        Sean Anderson <sean.anderson@...o.com>,
        Tom Rix <trix@...hat.com>,
        Tonghao Zhang <xiangxia.m.yue@...il.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Marco Bonelli <marco@...eim.net>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v1] ethtool: ethtool_get_drvinfo: populate
 drvinfo fields even if callback exits

On Tue, Nov 08, 2022 at 12:57:54PM +0900, Vincent Mailhol wrote:
> If ethtool_ops::get_drvinfo() callback isn't set,
> ethtool_get_drvinfo() will fill the ethtool_drvinfo::name and
> ethtool_drvinfo::bus_info fields.
> 
> However, if the driver provides the callback function, those two
> fields are not touched. This means that the driver has to fill these
> itself.

Can you please point to such drivers? One can argue that they don't need
to touch these fields in a first place and ethtool_drvinfo should always
overwrite them.

Thanks