netdev - Re: [PATCH net v2 1/2] devlink: let driver opt out of automatic phys_port

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Message-ID: <c8473c7e-0432-481d-9db2-656c3ad7305b@intel.com>
Date: Mon, 11 Aug 2025 14:27:39 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: <davem@...emloft.net>, <pabeni@...hat.com>, <edumazet@...gle.com>,
	<andrew+netdev@...n.ch>, <netdev@...r.kernel.org>, Jedrzej Jagielski
	<jedrzej.jagielski@...el.com>, <przemyslaw.kitszel@...el.com>,
	<jiri@...nulli.us>, <horms@...nel.org>, <David.Kaplan@....com>,
	<dhowells@...hat.com>, Paul Menzel <pmenzel@...gen.mpg.de>, Jacob Keller
	<jacob.e.keller@...el.com>
Subject: Re: [PATCH net v2 1/2] devlink: let driver opt out of automatic
 phys_port_name generation



On 8/8/2025 11:53 AM, Jakub Kicinski wrote:
> On Tue,  5 Aug 2025 15:33:41 -0700 Tony Nguyen wrote:
>> +	if (devlink_port->attrs.no_phys_port_name)
>> +		return 0;
> 
> Why are you returning 0 rather than -EOPNOTSUPP?
> Driver which doesn't implement phys_port_name would normally return
> -EOPNOTSUPP when user tries to read the sysfs file.

Jedrek is out so I'm not sure the reason, but it does seem
-EOPNOTSUPP would be more appropriate so I'll make that change.

Thanks,
Tony