netdev - Re: [PATCH net-next v5 0/5] ethtool: introduce PHY MSE diagnostics UAPI and drivers

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Message-ID: <aMQPMUODGODuq8YF@pengutronix.de>
Date: Fri, 12 Sep 2025 14:16:49 +0200
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Andrew Lunn <andrew@...n.ch>, "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Donald Hunter <donald.hunter@...il.com>,
	Jonathan Corbet <corbet@....net>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Kory Maincent <kory.maincent@...tlin.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	Nishanth Menon <nm@...com>, kernel@...gutronix.de,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	UNGLinuxDriver@...rochip.com, linux-doc@...r.kernel.org,
	Michal Kubecek <mkubecek@...e.cz>, Roan van Dijk <roan@...tonic.nl>
Subject: Re: [PATCH net-next v5 0/5] ethtool: introduce PHY MSE diagnostics
 UAPI and drivers

On Thu, Sep 11, 2025 at 07:18:46PM -0700, Jakub Kicinski wrote:
> On Mon,  8 Sep 2025 14:46:05 +0200 Oleksij Rempel wrote:
> >  In practice, such scenarios can only be investigated in
> > fixed-link mode; here, MSE can provide an empirically estimated value
> > indicating conditions under which autonegotiation would not succeed.
> 
> Does fixed-link make sense here? I thought fixed-link meant MAC-to-MAC
> in most contexts

Ah.. sorry, i mean forced link, without auoneg enabled.

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