linux-kernel - Re: [PATCH net-next v2] devlink: Implement devlink param multi attribute nested data values

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Message-ID: <20260126171859.5097dfb5@kernel.org>
Date: Mon, 26 Jan 2026 17:18:59 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Ratheesh Kannoth <rkannoth@...vell.com>
Cc: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Saeed Mahameed
 <saeedm@...dia.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Simon Horman
 <horms@...nel.org>, Donald Hunter <donald.hunter@...il.com>, Jiri Pirko
 <jiri@...nulli.us>, Chuck Lever <chuck.lever@...cle.com>, "Matthieu Baerts
 (NGI0)" <matttbe@...nel.org>, Carolina Jubran <cjubran@...dia.com>
Subject: Re: [PATCH net-next v2] devlink: Implement devlink param multi
 attribute nested data values

On Mon, 26 Jan 2026 08:09:44 +0530 Ratheesh Kannoth wrote:
> Devlink param value attribute is not defined since devlink is handling
> the value validating and parsing internally, this allows us to implement
> multi attribute values without breaking any policies.
> 
> Devlink param multi-attribute values are considered to be dynamically
> sized arrays of u32 values, by introducing a new devlink param type
> DEVLINK_PARAM_TYPE_U32_ARRAY, driver and user space can set a variable
> count of u32 values into the DEVLINK_ATTR_PARAM_VALUE_DATA attribute.
> 
> Implement get/set parsing and add to the internal value structure passed
> to drivers.
> 
> This is useful for devices that need to configure a list of values for
> a specific configuration.

Could you respin this as a series with the first driver implementing
a param of this type?  We can't merge an API without a user.
-- 
pw-bot: cr