linux-kernel - Re: [PATCH net-next v3 1/3] net: dp83869: Add ability to advertise Fiber connection

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Message-ID: <20200910180900.GE3354160@lunn.ch>
Date:   Thu, 10 Sep 2020 20:09:00 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Dan Murphy <dmurphy@...com>
Cc:     Jakub Kicinski <kuba@...nel.org>, davem@...emloft.net,
        f.fainelli@...il.com, hkallweit1@...il.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3 1/3] net: dp83869: Add ability to advertise
 Fiber connection

> The note in the ethtool.h says
> 
>     /* Last allowed bit for __ETHTOOL_LINK_MODE_LEGACY_MASK is bit
>      * 31. Please do NOT define any SUPPORTED_* or ADVERTISED_*
>      * macro for bits > 31. The only way to use indices > 31 is to
>      * use the new ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API.
>      */
> 
> Which was added by Heiner
> 
> I guess I would prefer to add this in a separate patchset once I figure out
> how the ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API works

The phydev supported value is no longer a u32, it is now a bitmap. So
you can do something like

linkmode_set_bit(ETHTOOL_LINK_MODE_100BaseFX_Full_BIT, &supported);

       Andrew