linux-kernel - Re: [PATCH net-next v3 2/3] net: ethtool: Add impedance mismatch result code to cable test

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Date: Wed, 3 Apr 2024 01:37:26 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Pawel Dembicki <paweldembicki@...il.com>
Cc: netdev@...r.kernel.org, Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Dimitri Fedrau <dima.fedrau@...il.com>,
	Stefan Eichenberger <eichest@...il.com>,
	Kory Maincent <kory.maincent@...tlin.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	Ahmed Zaki <ahmed.zaki@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3 2/3] net: ethtool: Add impedance mismatch
 result code to cable test

On Tue, Apr 02, 2024 at 10:11:19PM +0200, Pawel Dembicki wrote:
> Some PHYs can recognize during a cable test if the impedance in the cable
> is okay. They can detect reflections caused by impedance discontinuity
> between a regular 100 Ohm cable and an abnormal part with a higher or
> lower impedance.
> 
> This commit introduces a new result code:
> ETHTOOL_A_CABLE_RESULT_CODE_IMPEDANCE_MISMATCH,
> which represents the results of a cable test indicating issues with
> impedance integrity.
> 
> Signed-off-by: Pawel Dembicki <paweldembicki@...il.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew