ath(4) problems after sam_wifi merge

Rui Paulo rpaulo at fnop.net
Mon Jun 18 11:43:52 UTC 2007


At Mon, 18 Jun 2007 19:16:18 +0800,
Sepherosa Ziehau wrote:
> 
> On 6/18/07, Rui Paulo <rpaulo at fnop.net> wrote:
> > At Mon, 18 Jun 2007 06:42:58 +1200,
> > Andrew Thompson wrote:
> > >
> > > On Sun, Jun 17, 2007 at 06:42:38PM +0100, Rui Paulo wrote:
> > > > Hi,
> > > > I'm having some problems with ath after the sam_wifi branch merge.
> > > > Basically I have all the necessary modules loaded, but scanning is not
> > > > working well.
> > > >
> > > > % kldstat | egrep wlan\|ath
> > > >  2    1 0xc097a000 12450    if_ath.ko
> > > >  3    3 0xc098d000 2ec38    ath_hal.ko
> > > >  4    8 0xc09bc000 2b65c    wlan.ko
> > > >  5    2 0xc09e8000 43e8     ath_rate.ko
> > > > 20    1 0xc0af7000 4480     wlan_tkip.ko
> > > > 21    1 0xc0afc000 2fec     wlan_wep.ko
> > > > 22    1 0xc0aff000 7100     wlan_ccmp.ko
> > > > 23    1 0xc0b07000 1920     wlan_scan_ap.ko
> > > > 24    1 0xc0b09000 552c     wlan_scan_sta.ko
> > > >
> > > > Is anything missing?
> > > >
> > > > My card is:
> > > > ath0: <Atheros 5424/2424> mem 0x90100000-0x9010ffff irq 17 at device 0.0 on pci2
> > > > ath0: [ITHREAD]
> > > > ath0: using obsoleted if_watchdog interface
> > > > ath0: mac 10.3 phy 6.1 radio 10.2
> > > >
> > > > ath0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > > >         ether 00:17:f2:44:ba:50
> > > >         media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
> > > >         status: no carrier
> > > >         ssid "" channel 1 (2412 Mhz 11g)
> > > >         authmode OPEN privacy OFF txpowmax 34 bmiss 7 scanvalid 60 bgscan
> > > >         bgscanintvl 300 bgscanidle 250 roam:rssi11g 14 roam:rate11g 5
> > > >         protmode CTS burst bintval 100
> > > >
> > > > # ./wlandebug
> > > > net.wlan.0.debug: 0xffffff<assoc,auth,scan,output,state,power,dot1x,dot1xsm,radius,raddump,radkeys,wpa,acl,wme,superg,doth,inact,roam,rate>
> > > >
> > > > After ifconfig ath0 up, the scan goes as:
> > > >
> > > > ath0: ieee80211_newstate: INIT -> SCAN
> > > > ath0: ieee80211_check_scan: active scan, duration 2147483647, desired mode auto, flush
> > > > ath0: sta_pick_bss: no scan candidate
> > > > ath0: ieee80211_start_scan: active scan, duration 2147483647, desired mode auto, flush
> > > > ath0: scan set 1g dwell min 200 max 2000
> > > > ath0: scan_next: chan   1g ->   1g [active, dwell min 200 max 2000]
> > >
> > > Does your card have any channels? show the output of 'ifconfig ath0 list
> > > channels'
> >
> > % ifconfig ath0 list channels
> > Channel   1 : 2412  Mhz 11g          Channel  60 : 5300* Mhz 11a
> > Channel   2 : 2417  Mhz 11g          Channel  64 : 5320* Mhz 11a
> > Channel   3 : 2422  Mhz 11g          Channel 100 : 5500* Mhz 11a
> > Channel   4 : 2427  Mhz 11g          Channel 104 : 5520* Mhz 11a
> > Channel   5 : 2432  Mhz 11g          Channel 108 : 5540* Mhz 11a
> > Channel   6 : 2437* Mhz 11g Turbo    Channel 112 : 5560* Mhz 11a
> > Channel   7 : 2442  Mhz 11g          Channel 116 : 5580* Mhz 11a
> > Channel   8 : 2447  Mhz 11g          Channel 120 : 5600* Mhz 11a
> > Channel   9 : 2452  Mhz 11g          Channel 124 : 5620* Mhz 11a
> > Channel  10 : 2457  Mhz 11g          Channel 128 : 5640* Mhz 11a
> > Channel  11 : 2462  Mhz 11g          Channel 132 : 5660* Mhz 11a
> > Channel  12 : 2467* Mhz 11g          Channel 136 : 5680* Mhz 11a
> > Channel  13 : 2472* Mhz 11g          Channel 140 : 5700* Mhz 11a
> > Channel  36 : 5180* Mhz 11a          Channel 149 : 5745* Mhz 11a
> > Channel  40 : 5200* Mhz 11a          Channel 153 : 5765* Mhz 11a
> > Channel  44 : 5220* Mhz 11a          Channel 157 : 5785* Mhz 11a
> > Channel  48 : 5240* Mhz 11a          Channel 161 : 5805* Mhz 11a
> > Channel  52 : 5260* Mhz 11a          Channel 165 : 5825* Mhz 11a
> > Channel  56 : 5280* Mhz 11a
> >
> >
> > > Also, are you using wpa_supplicant or passing any other options to ath
> > > other than just up?
> >
> > No.
> 
> Try this:
> ifconfig ath0 channel -
> ifconfig ath0 up scan

It takes a lot of time to perform a scan. And I never let it finish
because after 5 minutes, the ithread consumes almost all the CPU:

   24 root          1 -68    -     0K     8K CPU1   1   1:27 92.97% irq17: ath0

--
Rui Paulo


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