linux-kernel - Re: [PATCH 05/14] mwifiex: re-register wiphy across reset

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Date:   Thu, 22 Jun 2017 14:59:49 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Brian Norris <briannorris@...omium.org>,
        Kalle Valo <kvalo@...eaurora.org>
Cc:     Ganapathi Bhat <gbhat@...vell.com>,
        Nishant Sarmukadam <nishants@...vell.com>,
        linux-kernel@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Amitkumar Karwar <amitkarwar@...il.com>,
        linux-wireless@...r.kernel.org
Subject: Re: [PATCH 05/14] mwifiex: re-register wiphy across reset

On Wed, 2017-06-21 at 10:48 -0700, Brian Norris wrote:
> 
> Yes, that all sounds nice. But for my sake, can you describe better
> what's actually going on there (e.g., can you point me at which code
> does this)? 

It's much easier with mac80211, it has all the state. Basically the
reconfig is in ieee80211_reconfig() :)

> I'm really not familiar with mac80211 (though I was aware of
> the above general behavior). But to my knowledge, mac80211 drivers
> keep a lot more state managed in the kernel, so it's a little easier
> and more natural to get the driver/FW back to "the same state" than
> it is with a full-MAC driver.

Indeed.

johannes