wpa_supllicant's nl80211 driver makes NetworkManager report 100 link quality for all access points

[Maxim Levitsky]

On Tue, 2009-04-14 at 10:48 -0400, Dan Williams wrote:
> On Sun, 2009-04-12 at 03:11 +0300, Maxim Levitsky wrote:
> > Hi,
> > 
> > My goal is to cut down to minimum the time it takes to connect fully to
> > an access point.
> > 
> > Due to that I want to use new and probably still unfinished nl80211
> > wpa_supplicant driver.
> > 
> > It works with NetworkManager quite well (I patched wpa_supplicant to use
> > nl80211 when NM asks for wext)
> > 
> > Except one thing: NM shows 100% quality on all access points.
> 
> What does the supplicant interface report for the BSSID's properties?
> NM should prefer quality over level+noise, but NM may get the level
> +noise calculation wrong, especially since the supplicant dbus interface
> doesn't push the signal type (ie RSSI or dBm) through in the bssid
> properties.
> 
> So there may need to be changes in both the supplicant's dbus interface
> and NM.  But first, does the supplicant actually have 'quality' for the
> scanned APs, or just level + noise?
> 

Don't know what I was supposed to do exactly, but this is what wpa_cli
shows, when I run it manually:



driver_nl80211:


> > scan_results
> bssid / frequency / signal level / flags / ssid
> 00:1b:9e:d8:77:02	2412	-48	[WPA2-PSK-CCMP] 
> 02:22:15:02:16:cc	2462	-84	[WEP]	hisec
> 00:21:63:ec:2e:e0	2437	-87	[WEP]	hisec2
> 00:21:63:4c:41:34	2437	-78		RTA1025W-4C4134
> 00:0e:2e:93:13:3f	2462	-84		default
> 00:21:63:99:5b:a7	2437	-87		SIEMENS-995BA7
> 00:11:6b:25:ac:6c	2462	-87		012Level1
> > <2>CTRL-EVENT-TERMINATING - signal 2 received
> 
> 


wext:


bssid / frequency / signal level / flags / ssid
00:1b:9e:d8:77:02	2412	207	[WPA2-PSK-CCMP]	
02:22:15:02:16:cc	2462	170	[WEP]	hisec
00:21:63:4c:41:34	2437	178		RTA1025W-4C4134
00:21:63:76:b3:a4	2437	172		SIEMENS-76B3A4
00:21:63:73:3e:cb	2437	172		meravsh
00:0e:2e:93:13:3f	2462	172		default
00:1b:9e:89:a5:3f	2437	170		SIEMENS-89A53F
00:11:6b:29:b4:c0	2442	167		012-R