libertas: deautentification from AP

237 Rumjantsev Egor (PROG) rumjantsev at papillon.ru
Tue Jan 25 09:16:38 EST 2011


Hello.
We have an embedded board based on Voipac PXA270 SODIMM module with 
Linux 2.6.34.6.
We use SDIO WiFi modem on Marvell 8686 as wireless interface with 
following firmware version:
libertas: 00:01:36:1f:23:04, fw 9.70.3p36, cap 0x00000303

After connecting to AP i have following output iwconfig:

[root at Tomb /root]#iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11b/g  ESSID:"HPG_NETWORK"
           Mode:Managed  Frequency:2.417 GHz  Access Point: 
00:21:29:8A:E3:BE
           Bit Rate=2 Mb/s   Tx-Power=16 dBm
           Retry short limit:8   RTS thr=2347 B   Fragment thr=2346 B
           Encryption key:off
           Power Management:off
           Link Quality=87/100  Signal level=-56 dBm  Noise level=-93 dBm
           Rx invalid nwid:0  Rx invalid crypt:177  Rx invalid frag:0
           Tx excessive retries:1  Invalid misc:1   Missed beacon:0

After about 2-5 minutes modem has lost connection with AP.
Here is debug output:

libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 233 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 206 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 74 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 233 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 206 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 233 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 206 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 233 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 206 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 0 and size 233 bytes
libertas sdio: interrupt: 0x1
libertas sdio: packet of type 3 and size 16 bytes
libertas sdio: packet fragment (16 < 32)
libertas cmd: EVENT: deauthenticated

Is this problem appears because my AP settings wrong or problem is 
somewhere in libertas driver?
I've tried different versions of firmware and it hasn't helped.

Best Regards!

-- 
Rumjantsev Egor



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