netdev - Re: [PATCH net-next 1/3] ice: add ice_adapter for shared data across PFs on the same NIC

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Message-ID: <b712a3cf-7033-464a-8a02-3f923cad7fe9@intel.com>
Date: Mon, 26 Feb 2024 11:18:26 -0800
From: Jacob Keller <jacob.e.keller@...el.com>
To: Michal Schmidt <mschmidt@...hat.com>, <intel-wired-lan@...ts.osuosl.org>
CC: Jesse Brandeburg <jesse.brandeburg@...el.com>, Richard Cochran
	<richardcochran@...il.com>, Arkadiusz Kubalewski
	<arkadiusz.kubalewski@...el.com>, Karol Kolacinski
	<karol.kolacinski@...el.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 1/3] ice: add ice_adapter for shared data across
 PFs on the same NIC



On 2/26/2024 7:11 AM, Michal Schmidt wrote:
> There is a need for synchronization between ice PFs on the same physical
> adapter.
> 
> Add a "struct ice_adapter" for holding data shared between PFs of the
> same multifunction PCI device. The struct is refcounted - each ice_pf
> holds a reference to it.
> 
> Its first use will be for PTP. I expect it will be useful also to
> improve the ugliness that is ice_prot_id_tbl.
> 

We could alternatively have this be part of the ice PTP auxiliary bus
interface we added. However, I think a cross-adapter structure has uses
beyond just PTP and this implementation seems a bit more simple than the
auxiliary interface.