On Mon, 2009-08-03 at 14:36 +0200, Joerg Albert wrote:
> 
> > On Mon, 2009-08-03 at 10:44 +0200, Johannes Berg wrote:
> > 
> > > > >     ifconfig wlan1 down
> > > > >     iwconfig wlan1 mode managed essid huhu
> > > > >     ifconfig wlan1 up
> > > > >     ifconfig wlan1 down
> > > > >     iwconfig wlan1 mode ad-hoc essid huhu_a channel 1
> > 
> > > No, it's a bug in cfg80211 :)
> > 
> > But it's not making sense to me. I'll have to try to reproduce it. In
> > any case, we shouldn't be calling in to mac80211 from cfg80211 while the
> > interface is down.
> 
> I guess this is caused by the call to __cfg80211_leave_ibss()
> in  net/wireless/ibss.c::cfg80211_ibss_wext_siwfreq() trying to
> disable the beacon via net/mac80211::ieee80211_ibss_leave().

But it only does that if (wdev->ssid_len) which should be false, so I'm
confused.

johannes