linux-kernel - Re: [EXT] Re: [PATCH v9 0/2] wifi: mwifiex: add code to support host mlme

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Date: Wed, 20 Mar 2024 14:13:24 -0700
From: Brian Norris <briannorris@...omium.org>
To: David Lin <yu-hao.lin@....com>
Cc: "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kvalo@...nel.org" <kvalo@...nel.org>,
	"francesco@...cini.it" <francesco@...cini.it>,
	Pete Hsieh <tsung-hsien.hsieh@....com>,
	"rafael.beims" <rafael.beims@...adex.com>,
	Francesco Dolcini <francesco.dolcini@...adex.com>
Subject: Re: [EXT] Re: [PATCH v9 0/2] wifi: mwifiex: add code to support host
 mlme

Hi David,

On Mon, Mar 18, 2024 at 02:20:56AM +0000, David Lin wrote:
> > From: Brian Norris <briannorris@...omium.org>

> > I'm not sure if this has been asked/answered before, but are
> > the MLME/WPA3 limitations exclusively tied to the firmware support ("V2 Key
> > API")? Or are there hardware limitations on top (e.g., some firmware might get
> > "V2 Key API" but still be unsupported on a given chip family)? Could other
> > chips chips theoretically get this feature-set in the future?
> 
> If firmware reported support of V2 Key API, then host mlme can be
> supported without issues. There is a flag 'host_mlme' in struct
> 'mwifiex_sdio_device' to indicate if host mlme should be supported. If
> this flag is set, driver will still check if firmware can support V2
> Key API. If firmware can't support it, host mlme will be disabled.

Thanks! If I can distill the answer: it's just a software/firmware
limitation, and not a hardware limitation. The hardware limitation flag
in this series is added just out of caution.

Brian