Message-ID: <1505485208.31630.42.camel@sipsolutions.net> (sfid-20170915_162016_695443_80AAE5A3)
Subject: Re: ROAM/CONNECT event with PORT_AUTHORIZED
From: Johannes Berg <johannes@sipsolutions.net>
To: Denis Kenzior <denkenz@gmail.com>,
        Arend van Spriel <arend@broadcom.com>,
        Jouni Malinen <j@w1.fi>
Cc: Avraham Stern <avraham.stern@intel.com>,
        linux-wireless <linux-wireless@vger.kernel.org>
Date: Fri, 15 Sep 2017 16:20:08 +0200
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On Fri, 2017-09-15 at 08:50 -0500, Denis Kenzior wrote:

> > I thought you meant sending an 802.11 auth frame to the new AP
> > before breaking the connection to the old AP.
> > 
> 
> I mean 802.11-2012 Section 11.5.9.2 type preauthentication.

Yeha, OK.

> And AFAIK the kernel generates a disconnected event as soon as we
> send a CMD_AUTHENTICATE, so not sure how you envision 'your'
> preauthentication working...

That's what I was trying to say - it doesn't. A few years ago we tried
to support that but it's not really possible to do well.

> However, you're not answering my question...

Which was?

> > Well, with full MAC devices you should let the device decide on the
> > BSS?
> > 
> 
> Why? So we can deal with the various ways a vendor firmware can
> screw up?  Besides, you have an asymmetry in the kernel API. 

:)

> One can use regular roaming on a full mac but not FT.

We had intended to have NL80211_CMD_ROAM to make that decision once,
but never really used it for that... I think it could be implemented
but I don't really know how well drivers were to support it.

johannes