linux-kernel - Re: [PATCH net-next V2 4/7] net/mlx5: Register SF resource on PF port representor

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Message-ID: <kmoeavzguajvf67sjwxkh4x5ogbus3cigeatrstagbfcyqyka6@w5ufzb5brkst>
Date: Fri, 6 Feb 2026 10:36:31 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: Tariq Toukan <tariqt@...dia.com>
Cc: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>, 
	"David S. Miller" <davem@...emloft.net>, Donald Hunter <donald.hunter@...il.com>, 
	Jonathan Corbet <corbet@....net>, Saeed Mahameed <saeedm@...dia.com>, 
	Leon Romanovsky <leon@...nel.org>, Mark Bloch <mbloch@...dia.com>, Shuah Khan <shuah@...nel.org>, 
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, 
	linux-rdma@...r.kernel.org, linux-kselftest@...r.kernel.org, Gal Pressman <gal@...dia.com>, 
	Moshe Shemesh <moshe@...dia.com>, Shay Drori <shayd@...dia.com>, Jiri Pirko <jiri@...dia.com>, 
	Or Har-Toov <ohartoov@...dia.com>
Subject: Re: [PATCH net-next V2 4/7] net/mlx5: Register SF resource on PF
 port representor

Thu, Feb 05, 2026 at 03:28:30PM +0100, tariqt@...dia.com wrote:
>From: Or Har-Toov <ohartoov@...dia.com>
>
>The device-level "resource show" displays max_local_SFs and
>max_external_SFs without indicating which port each resource belongs
>to. Users cannot determine the controller number and pfnum associated
>with each SF pool.
>
>Register max_SFs resource on the Host PF representor port to expose
>per-port SF limits. Users can correlate the port resource with the
>controller number and pfnum shown in 'devlink port show'.
>
>Future patches will introduce an ECPF that manages multiple PFs,
>where each PF has its own SF pool.
>
>Example usage:
>
>  $ devlink port resource show
>  pci/0000:03:00.0/196608:
>    name max_SFs size 20 unit entry
>  pci/0000:03:00.1/262144:
>    name max_SFs size 20 unit entry
>
>  $ devlink port resource show pci/0000:03:00.0/196608
>  pci/0000:03:00.0/196608:
>    name max_SFs size 20 unit entry
>
>  $ devlink port show pci/0000:03:00.0/196608
>  pci/0000:03:00.0/196608: type eth netdev pf0hpf flavour pcipf
>    controller 1 pfnum 0 external true splittable false
>    function:
>      hw_addr b8:3f:d2:e1:8f:dc roce enable max_io_eqs 120
>
>We can create up to 20 SFs over devlink port pci/0000:03:00.0/196608,
>with pfnum 0 and controller 1.
>
>Signed-off-by: Or Har-Toov <ohartoov@...dia.com>
>Reviewed-by: Shay Drori <shayd@...dia.com>
>Reviewed-by: Moshe Shemesh <moshe@...dia.com>
>Signed-off-by: Tariq Toukan <tariqt@...dia.com>

Reviewed-by: Jiri Pirko <jiri@...dia.com>