netdev - Re: [PATCH net-next 0/5] ethtool: add support for EEE linkmodes beyond bit 32

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Date: Sat, 6 Jan 2024 20:44:31 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
 Andrew Lunn <andrew@...n.ch>, Russell King <rmk+kernel@...linux.org.uk>
Subject: Re: [PATCH net-next 0/5] ethtool: add support for EEE linkmodes
 beyond bit 32

On 01.01.2024 22:22, Heiner Kallweit wrote:
> So far only 32bit legacy bitmaps are passed to userspace. This makes
> it impossible to manage EEE linkmodes beyond bit 32, e.g. manage EEE
> for 2500BaseT and 5000BaseT. This series adds support for passing
> full linkmode bitmaps between kernel and userspace.
> 
> Fortunately the netlink-based part of ethtool is quite smart and no
> changes are needed in ethtool. However this applies to the netlink
> interface only, the ioctl interface for now remains restricted to
> legacy bitmaps.
> 
> Next step will be adding support for the c45 EEE2 standard registers
> (3.21, 7.62, 7.63) to the genphy_c45 functions dealing with EEE.
> I have a follow-up series for this ready to be submitted.
> 
> Heiner Kallweit (5):
>   ethtool: add struct ethtool_keee and extend struct ethtool_eee
>   ethtool: add basic handling of struct ethtool_keee
>   ethtool: send EEE linkmode bitmaps to userspace
>   net: phy: c45: prepare genphy_c45_ethtool_set_eee for follow-up
>     extension
>   net: phy: c45: extend genphy_c45_ethtool_[set|get]_eee
> 
>  drivers/net/phy/phy-c45.c    | 57 +++++++++++++++++----------
>  include/linux/ethtool.h      | 18 +++++++++
>  include/uapi/linux/ethtool.h |  4 +-
>  net/ethtool/eee.c            | 75 +++++++++++++++++++++++++-----------
>  4 files changed, 109 insertions(+), 45 deletions(-)
> 
This version of the series can be set to "changes requested".
I'll submit a follow-up RFC series as basis for further discussion.