linux-kernel - Re: [RFC net-next v2 1/2] devlink: add whole device devlink instance

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Message-ID: <iiemy2zwko4iehuw6cgbipszcxonanjpumxzv4nbdvgvdgi5fx@jz3hkez3lygw>
Date: Wed, 26 Feb 2025 15:48:35 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, 
	Tony Nguyen <anthony.l.nguyen@...el.com>, Jakub Kicinski <kuba@...nel.org>, 
	Cosmin Ratiu <cratiu@...dia.com>, Tariq Toukan <tariqt@...dia.com>, netdev@...r.kernel.org, 
	Konrad Knitter <konrad.knitter@...el.com>, Jacob Keller <jacob.e.keller@...el.com>, davem@...emloft.net, 
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>, 
	linux-kernel@...r.kernel.org, ITP Upstream <nxne.cnse.osdt.itp.upstreaming@...el.com>, 
	Carolina Jubran <cjubran@...dia.com>
Subject: Re: [RFC net-next v2 1/2] devlink: add whole device devlink instance

Tue, Feb 25, 2025 at 04:40:49PM +0100, przemyslaw.kitszel@...el.com wrote:
>On 2/25/25 15:35, Jiri Pirko wrote:
>> Tue, Feb 25, 2025 at 12:30:49PM +0100, przemyslaw.kitszel@...el.com wrote:

[...]

>> > output, for all PFs and VFs on given device:
>> > 
>> > pci/0000:af:00:
>> >   name rss size 8 unit entry size_min 0 size_max 24 size_gran 1
>> >     resources:
>> >       name lut_512 size 0 unit entry size_min 0 size_max 16 size_gran 1
>> >       name lut_2048 size 8 unit entry size_min 0 size_max 8 size_gran 1
>> > 
>> > What is contributing to the hardness, this is not just one for all ice
>> > PFs, but one per device, which we distinguish via pci BDF.
>> 
>> How?
>
>code is in ice_adapter_index()

If you pass 2 pfs of the same device to a VM with random BDF, you get 2
ice_adapters, correct?

[...]