netdev - Re: [PATCH net] net: ethtool: handle EOPNOTSUPP from ethtool get_ts

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Message-ID: <20250911233733.41248f64@kmaincent-XPS-13-7390>
Date: Thu, 11 Sep 2025 23:37:33 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Andrew Lunn <andrew@...n.ch>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>, Simon Horman
 <horms@...nel.org>
Subject: Re: [PATCH net] net: ethtool: handle EOPNOTSUPP from ethtool
 get_ts_info() method

On Thu, 11 Sep 2025 15:43:15 +0100
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk> wrote:

> Network drivers sometimes return -EOPNOTSUPP from their get_ts_info()
> method, and this should not cause the reporting of PHY timestamping
> information to be prohibited. Handle this error code, and also
> arrange for ethtool_net_get_ts_info_by_phc() to return -EOPNOTSUPP
> when the method is not implemented.
> 
> This allows e.g. PHYs connected to DSA switches which support
> timestamping to report their timestamping capabilities.

You forgot the v2 in the subject prefix.

Reviewed-by: Kory Maincent <kory.maincent@...tlin.com>

Thank you!
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com