linux-kernel - Re: [Intel-wired-lan] [RFC PATCH] net: add net-device TX clock source selection framework

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Message-ID: <6b8281b3-a438-4b3e-a8e7-d5043416d421@redhat.com>
Date: Wed, 30 Jul 2025 16:45:18 +0200
From: Ivan Vecera <ivecera@...hat.com>
To: Jiri Pirko <jiri@...nulli.us>,
 Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
Cc: anthony.l.nguyen@...el.com, przemyslaw.kitszel@...el.com,
 andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, horms@...nel.org, sdf@...ichev.me,
 almasrymina@...gle.com, asml.silence@...il.com, leitao@...ian.org,
 kuniyu@...gle.com, linux-kernel@...r.kernel.org,
 intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org
Subject: Re: [Intel-wired-lan] [RFC PATCH] net: add net-device TX clock source
 selection framework

On 30. 07. 25 2:26 odp., Jiri Pirko wrote:
> Tue, Jul 29, 2025 at 12:45:28PM +0200, arkadiusz.kubalewski@...el.com wrote:
> 
> [...]
> 
>> User interface:
>> - Read /sys/class/net/<device>/tx_clk/<clock_name> to get status (0/1)
>> - Write "1" to switch to that clock source
> 
> I wonder, if someone invented a time machine and sent me back to 2005...
> 
> [...]
> 
+1
why do we have netlink based interfaces for configuration...?

Wouldn't be better to implement such thing to be configurable via ip
link or ethtool??

E.g.
ip link set eth0 tx-clk <clock_name>

--or--
ethtool --set-tx-clk/--show-tx-clk eth0 <clock_name>

Ivan