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Subject: Re: Problem with IEEE80211_MONITORING_INTERVAL
From: Marcel Holtmann <marcel@holtmann.org>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org, Jouni Malinen <j@w1.fi>,
	Reinette Chatre <reinette.chatre@intel.com>
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Date: Wed, 22 Apr 2009 12:53:25 +0100
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Hi Johannes,

> > > > > CTRL-EVENT-SCAN-RESULTS 
> > > > > Trying to authenticate with 00:23:ab:xx:xx:xx (SSID='Guest' freq=2412 MHz)
> > > > > Trying to associate with 00:23:ab:xx:xx:xx (SSID='Guest' freq=2412 MHz)
> > > > > Associated with 00:23:ab:xx:xx:xx
> > > > > CTRL-EVENT-CONNECTED - Connection to 00:23:ab:xx:xx:xx completed (auth) [id=2 id_str=]
> > > > > CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
> > > > > l2_packet_receive - recvfrom: Network is down
> > > > > Failed to initiate AP scan.
> > > > > Failed to initiate AP scan.
> > > > > ^CCTRL-EVENT-TERMINATING - signal 2 received
> > > > > 
> > > > > So starting wpa_supplicant does its job fine, then running dhclient I
> > > > > end up in the disconnect and network down and after that scanning fails.
> > > > 
> > > > ???
> > > > 
> > > > And the below kernel message is all yo uget?
> > > 
> > > Yes, I am as puzzled as you are and can't make any sense out of it. It
> > > seems that something is going horribly wrong here somewhere. I just
> > > don't have any clue where.
> > 
> > I just don't see anything in the kernel that would ever set the
> > interface down, as indicated there.

so I have installed the latest wireless-testing kernel now.

CTRL-EVENT-SCAN-RESULTS 
Trying to authenticate with 00:1f:f3:fa:58:59 (SSID='HON Circle' freq=2452 MHz)
Trying to associate with 00:1f:f3:fa:58:59 (SSID='HON Circle' freq=2452 MHz)
Could not read SSID from driver.
WPA: No SSID info found (msg 1 of 4).
Associated with 00:1f:f3:fa:58:59
WPA: Key negotiation completed with 00:1f:f3:fa:58:59 [PTK=CCMP GTK=CCMP]
CTRL-EVENT-CONNECTED - Connection to 00:1f:f3:fa:58:59 completed (auth) [id=1 id_str=]

<starting dhclient wlan0 now>

CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
l2_packet_receive - recvfrom: Network is down
CTRL-EVENT-SCAN-RESULTS 
Trying to authenticate with 00:1f:f3:fa:58:59 (SSID='HON Circle' freq=2452 MHz)
Trying to associate with 00:1f:f3:fa:58:59 (SSID='HON Circle' freq=2452 MHz)
Associated with 00:1f:f3:fa:58:59
WPA: Key negotiation completed with 00:1f:f3:fa:58:59 [PTK=CCMP GTK=CCMP]
CTRL-EVENT-CONNECTED - Connection to 00:1f:f3:fa:58:59 completed (reauth) [id=1 id_str=]

For some reason the dhclient triggers the disconnect and I see the
network down. With this kernel it reconnects properly and then dhclient
succeeds. This is against an N-capable AirPort Express.

Regards

Marcel