netdev - Re: [PATCH net-next 1/3] ethtool: Add 100base-FX link mode entries

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Message-ID: <20200915202113.GE3526428@lunn.ch>
Date:   Tue, 15 Sep 2020 22:21:13 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Dan Murphy <dmurphy@...com>
Cc:     davem@...emloft.net, f.fainelli@...il.com, hkallweit1@...il.com,
        mkubecek@...e.cz, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 1/3] ethtool: Add 100base-FX link mode entries

On Tue, Sep 15, 2020 at 01:17:06PM -0500, Dan Murphy wrote:
> Add entries for the 100base-FX full and half duplex supported modes.
> 
> $ ethtool eth0
>         Supported ports: [ TP    MII     FIBRE ]
>         Supported link modes:   10baseT/Half 10baseT/Full
>                                 100baseT/Half 100baseT/Full
>                                 100baseFX/Half 100baseFX/Full
>         Supported pause frame use: Symmetric Receive-only
>         Supports auto-negotiation: No
>         Supported FEC modes: Not reported
>         Advertised link modes:  10baseT/Half 10baseT/Full
>                                 100baseT/Half 100baseT/Full
>                                 100baseFX/Half 100baseFX/Full

I thought this PHY could not switch between TP and Fibre. It has a
strap which decides? So i would expect the supported modes to be
either BaseT or BaseFX. Not both. Same for Advertised?

       Andrew