linux-kernel - Re: iwlwifi-driver card doesn't work with 3.19-rc2+

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Date:	Tue, 30 Dec 2014 20:28:23 +0000
From:	"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>
To:	"jkosina@...e.cz" <jkosina@...e.cz>
CC:	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"egrumbach@...il.com" <egrumbach@...il.com>,
	"peter@...leysoftware.com" <peter@...leysoftware.com>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>,
	"Berg, Johannes" <johannes.berg@...el.com>
Subject: Re: iwlwifi-driver card doesn't work with 3.19-rc2+

On Tue, 2014-12-30 at 16:21 +0100, Jiri Kosina wrote:
> On Tue, 30 Dec 2014, Grumbach, Emmanuel wrote:
> 
> > > > So why do you used them?
> > > > They have been deprecated for a couple of years now. You should be
> > > > using nl80211 based tools such as iw.
> > > 
> > > A couple of years is not very long where userspace is concerned.
> > > 
> > Well - the decently new wireless tools do talk nl80211.
> 
> With 3.18-rc5, I get this:
> 
> # iwconfig --version
> iwconfig  Wireless-Tools version 30
>           Compatible with Wireless Extension v11 to v22.
> 
> Kernel    Currently compiled with Wireless Extension v22.
> 
> wlan0     Recommend Wireless Extension v21 or later,
>           Currently compiled with Wireless Extension v22.
> 
> 
> With 3.19-rc, I get (with the same userspace) this:
> 
> # iwconfig --version
> iwconfig  Wireless-Tools version 30
>           Compatible with Wireless Extension v11 to v22.
> 
>           Cannot read /proc/net/wireless
> 
> And nothing else (iwlist, etc) works either. This is with
> 
> # rpm -qi wireless-tools | grep Ver
> Version     : 30.pre9
> 
> from openSUSE 13.2. That's not decently new enough?
> 

You should also have the iw tool which will provide all you need
using the nl80211 interface which is now the preferred interface.

> > You can still enable it (CFG80211_WEXT).
> > It has been disabled by:
> > 
> > commit 24a0aa212ee2dbe44360288684478d76a8e20a0a
> > Author: Johannes Berg <johannes.berg@...el.com>
> > Date:   Fri Nov 28 12:14:06 2014 +0100
> >
> >    cfg80211: make WEXT compatibility unselectable
> 
> I think this needs to be reverted.
>