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

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To: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Subject: Re: [PATCH net-next v5 0/5] ethtool: introduce PHY MSE diagnostics UAPI and drivers
From: Jakub Kicinski <kuba@xxxxxxxxxx>
Date: Thu, 11 Sep 2025 19:18:46 -0700
Cc: Andrew Lunn <andrew@xxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Paolo Abeni <pabeni@xxxxxxxxxx>, Simon Horman <horms@xxxxxxxxxx>, Donald Hunter <donald.hunter@xxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Heiner Kallweit <hkallweit1@xxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Kory Maincent <kory.maincent@xxxxxxxxxxx>, Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>, Nishanth Menon <nm@xxxxxx>, kernel@xxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, UNGLinuxDriver@xxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, Michal Kubecek <mkubecek@xxxxxxx>, Roan van Dijk <roan@xxxxxxxxxxx>
In-reply-to: <20250908124610.2937939-1-o.rempel@pengutronix.de>
References: <20250908124610.2937939-1-o.rempel@pengutronix.de>

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

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- [PATCH net-next v5 0/5] ethtool: introduce PHY MSE diagnostics UAPI and drivers
  - From: Oleksij Rempel

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