netdev - Re: [PATCH net-next v1] net: phy: tja11xx: execute cable test on link up

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Date:   Fri, 15 May 2020 19:56:34 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        Marek Vasut <marex@...x.de>, David Jander <david@...tonic.nl>
Subject: Re: [PATCH net-next v1] net: phy: tja11xx: execute cable test on
 link up

On Thu, May 14, 2020 at 09:42:18PM +0200, Oleksij Rempel wrote:
> A typical 100Base-T1 link should be always connected. If the link is in
> a shot or open state, it is a failure. In most cases, we won't be able
> to automatically handle this issue, but we need to log it or notify user
> (if possible).
> 
> With this patch, the cable will be tested on "ip l s dev .. up" attempt
> and send ethnl notification to the user space.
> 
> This patch was tested with TJA1102 PHY and "ethtool --monitor" command.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>

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

    Andrew