netdev - Re: [PATCH v2] net: phy: realtek: Add support for RTL9000AA/AN

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Message-ID: <YAb+zI71+d67mlwz@lunn.ch>
Date:   Tue, 19 Jan 2021 16:46:20 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     "ashiduka@...itsu.com" <ashiduka@...itsu.com>
Cc:     "hkallweit1@...il.com" <hkallweit1@...il.com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "torii.ken1@...itsu.com" <torii.ken1@...itsu.com>
Subject: Re: [PATCH v2] net: phy: realtek: Add support for RTL9000AA/AN

On Mon, Jan 18, 2021 at 10:17:04AM +0000, ashiduka@...itsu.com wrote:
> Hi Andrew
> 
> > > Do you know how to switch between master/slave?
> > 
> > There was a patch to ethtool merged for this:
> > 
> > commit 558f7cc33daf82f945af432c79db40edcbe0dad0
> > Author: Oleksij Rempel <o.rempel@...gutronix.de>
> > Date:   Wed Jun 10 10:37:43 2020 +0200
> > 
> >     netlink: add master/slave configuration support
> 
> I know this.
> --
> # ./ethtool --version
> ethtool version 5.10
> # ./ethtool -s eth1 master-slave slave-force 
> ethtool (-s): invalid value 'slave-force' for parameter 'master-slave'

The parameter is called 'forced-slave'. See the man page:

       ethtool -s devname [speed N] [duplex half|full] [port tp|aui|bnc|mii]
              [mdix auto|on|off] [autoneg on|off] [advertise N[/M] |
              advertise mode on|off ...]  [phyad N] [xcvr internal|external]
              [wol N[/M] | wol p|u|m|b|a|g|s|f|d...]
              [sopass xx:yy:zz:aa:bb:cc] [master-slave preferred-
              master|preferred-slave|forced-master|forced-slave] [msglvl
              N[/M] | msglvl type on|off ...]

sudo ethtool -s eth10 master-slave forced-master
netlink error: master/slave configuration not supported by device (offset 36)
netlink error: Operation not supported

	Andrew