linux-kernel - Re: [PATCH] sfc: Export fibre-specific link modes for 1/10G

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Date:   Tue, 19 Oct 2021 22:09:15 +0200
From:   Erik Ekman <erik@...o.se>
To:     Erik Ekman <erik@...o.se>, Edward Cree <ecree.xilinx@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sfc: Export fibre-specific link modes for 1/10G

On Tue, 19 Oct 2021 at 21:18, Martin Habets <habetsm.xilinx@...il.com> wrote:
>
> On Mon, Oct 18, 2021 at 08:37:08PM +0200, Erik Ekman wrote:
> > These modes were added to ethtool.h in 5711a98221443 ("net: ethtool: add support
> > for 1000BaseX and missing 10G link modes") back in 2016.
> >
> > Only setting CR mode for 10G, similar to how 25/40/50/100G modes are set up.
> >
> > Tested using SFN5122F-R7 (with 2 SFP+ ports) and a 1000BASE-BX10 SFP module.
> > Before:
> >
> > $ ethtool ext
> > Settings for ext:
> >       Supported ports: [ FIBRE ]
> >       Supported link modes:   1000baseT/Full
> >                               10000baseT/Full
> >       Supported pause frame use: Symmetric Receive-only
> >       Supports auto-negotiation: No
> >       Supported FEC modes: Not reported
> >       Advertised link modes:  Not reported
> >       Advertised pause frame use: No
> >       Advertised auto-negotiation: No
> >       Advertised FEC modes: Not reported
> >       Link partner advertised link modes:  Not reported
> >       Link partner advertised pause frame use: No
> >       Link partner advertised auto-negotiation: No
> >       Link partner advertised FEC modes: Not reported
> >       Speed: 1000Mb/s
> >       Duplex: Full
> >       Auto-negotiation: off
> >       Port: FIBRE
> >       PHYAD: 255
> >       Transceiver: internal
> >         Current message level: 0x000020f7 (8439)
> >                                drv probe link ifdown ifup rx_err tx_err hw
> >       Link detected: yes
> >
> > After:
> >
> > $ ethtool ext
> > Settings for ext:
> >       Supported ports: [ FIBRE ]
> >       Supported link modes:   1000baseX/Full
> >                               10000baseCR/Full
> >       Supported pause frame use: Symmetric Receive-only
> >       Supports auto-negotiation: No
> >       Supported FEC modes: Not reported
> >       Advertised link modes:  Not reported
> >       Advertised pause frame use: No
> >       Advertised auto-negotiation: No
> >       Advertised FEC modes: Not reported
> >       Link partner advertised link modes:  Not reported
> >       Link partner advertised pause frame use: No
> >       Link partner advertised auto-negotiation: No
> >       Link partner advertised FEC modes: Not reported
> >       Speed: 1000Mb/s
> >       Duplex: Full
> >       Auto-negotiation: off
> >       Port: FIBRE
> >       PHYAD: 255
> >       Transceiver: internal
> >       Supports Wake-on: g
> >       Wake-on: d
> >         Current message level: 0x000020f7 (8439)
> >                                drv probe link ifdown ifup rx_err tx_err hw
> >       Link detected: yes
> >
> > Signed-off-by: Erik Ekman <erik@...o.se>
>
> Acked-by: Martin Habets <habetsm.xilinx@...il.com>
>

I will send a v2 patch with more modes marked supported.

/Erik