iwl3945 and WPA

I cannot connect to my WIFI/WPA network using iwl3945 driver.

debian:/home/u# iwlist wlan0_rename scanning
wlan0_rename  Scan completed :
         Cell 01 - Address: 00:1D:7E:43:B3:3F
                   ESSID:"APTEKA"
                   Mode:Master
                   Channel:11
                   Frequency:2.462 GHz (Channel 11)
                   Quality=73/100  Signal level:-61 dBm  Noise 
level=-127 dBm
                   Encryption key:on
                   IE: WPA Version 1
                       Group Cipher : TKIP
                       Pairwise Ciphers (1) : TKIP
                       Authentication Suites (1) : PSK
                   Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                             24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                             12 Mb/s; 48 Mb/s
                   Extra:tsf=0000003b5a033363

debian:/home/u# cat /etc/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=root
network={
    ssid="APTEKA"
    scan_ssid=1
    key_mgmt=WPA-PSK
    psk="xxx"
}

debian:/home/u# wpa_supplicant -Dwext -iwlan0_rename -c/etc/wpa_supplicant.conf -dd
Initializing interface 'wlan0_rename' conf '/etc/wpa_supplicant.conf' driver 'wext' ctrl_interface 'N/A' bridge 'N/A'
Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant.conf'
ctrl_interface='DIR=/var/run/wpa_supplicant GROUP=root'
Line: 2 - start of a new network block
ssid - hexdump_ascii(len=6):
    41 50 54 45 4b 41                                 APTEKA         
scan_ssid=1 (0x1)
key_mgmt: 0x2
PSK (ASCII passphrase) - hexdump_ascii(len=16): [REMOVED]
PSK (from passphrase) - hexdump(len=32): [REMOVED]
Priority group 0
  id=0 ssid='APTEKA'
Initializing interface (2) 'wlan0_rename'
Interface wlan0_rename set UP - waiting a second for the driver to complete initialization
SIOCGIWRANGE: WE(compiled)=22 WE(source)=21 enc_capa=0xf
 capabilities: key_mgmt 0xf enc 0xf
WEXT: Operstate: linkmode=1, operstate=5
Own MAC address: 00:1b:77:bc:bb:ec
wpa_driver_wext_set_wpa
wpa_driver_wext_set_key: alg=0 key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=3 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_countermeasures
wpa_driver_wext_set_drop_unencrypted
RSN: flushing PMKID list in the driver
Setting scan request: 0 sec 100000 usec
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
ctrl_interface_group=0 (from group name 'root')
Added interface wlan0_rename
Ignore event for foreign ifindex 7
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0_rename' added
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
Wireless event: cmd=0x8b06 len=12
State: DISCONNECTED -> SCANNING
Starting AP scan (specific SSID)
Scan SSID - hexdump_ascii(len=6):
    41 50 54 45 4b 41                                 APTEKA         
Trying to get current scan results first without requesting a new scan to speed up initial association
Received 0 bytes of scan results (0 BSSes)
CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
Try to find non-WPA AP
No suitable AP found.
Setting scan request: 0 sec 0 usec
Starting AP scan (broadcast SSID)
Scan requested (ret=0) - scan timeout 5 seconds
EAPOL: disable timer tick
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
Wireless event: cmd=0x8b19 len=16
Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=11)
Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=2462)
Received 300 bytes of scan results (1 BSSes)
CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
  skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
  skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (specific SSID)
Scan SSID - hexdump_ascii(len=6):
    41 50 54 45 4b 41                                 APTEKA         
Scan requested (ret=0) - scan timeout 30 seconds
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
Wireless event: cmd=0x8b19 len=16

Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=11) Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=2462) Received 300 bytes of scan results (1 BSSes) CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan requested (ret=0) - scan timeout 30 seconds
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP]) Wireless event: cmd=0x8b19 len=16
Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=11) Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=2462) Received 300 bytes of scan results (1 BSSes) CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (specific SSID)
Scan SSID - hexdump_ascii(len=6):
41 50 54 45 4b 41 APTEKA
Scan requested (ret=0) - scan timeout 30 seconds
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP]) Wireless event: cmd=0x8b19 len=16
Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=11) Invalid freq in scan results (BSSID=00:00:01:00:00:1d m=0 e=2462) Received 300 bytes of scan results (1 BSSes) CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:00:01:00:00:1d ssid='' wpa_ie_len=0 rsn_ie_len=0 caps=0x10
skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec CTRL-EVENT-TERMINATING - signal 2 received
Removing interface wlan0_rename
State: SCANNING -> DISCONNECTED wpa_driver_wext_set_operstate: operstate 0->0 (DORMANT)
WEXT: Operstate: linkmode=-1, operstate=5
No keys have been configured - skip key clearing
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0 wpa_driver_wext_set_wpa wpa_driver_wext_set_drop_unencrypted wpa_driver_wext_set_countermeasures
No keys have been configured - skip key clearing Cancelling scan request
Cancelling authentication timeout
WEXT: Operstate: linkmode=0, operstate=6

I've used driver included in kernel 2.6.24.2 and compat-wireless-2008-06-13 . The same results

Regards
Maciek Kaliszewski

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What system kernel are you using. This looks something we've already solved... Tomas

Kernel is
uname -a
Linux debian 2.6.24.2 #1 SMP Mon Feb 11 10:22:07 UTC 2008 x86_64 GNU/Linux

I've used iwl3945 driver included in this kernel , but also I've tried compat-wireless-2008-06-13 . No change.

Regards
Maciek Kaliszewski

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Any chance that adding a line like this in /etc/modprobe.conf is helpful?

options iwl3945 disable_hw_scan=1

Worth a shot... :-)

John

John W. Linville
[email protected]

I would suggest to upgrade supplicant as iwlist is apparently working

Sorry I've sent it off-list. resent

debian:/home/u# rmmod iwl3945.ko
debian:/home/u# insmod
/lib/modules/2.6.24.2/updates/drivers/net/wireless/iwlwifi/iwl3945.ko
disable_hw_scan=1

The same results with wpa_supplicant.

debian:/home/u# dpkg -l |grep wpa
ii  wpasupplicant                        0.6.3-1
Client support for WPA and WPA2 (IEEE 802.11

It is standard debian/lenny package .
Should I compile wpa_supplicant from source ?

On other computer debian/lenny also ,and p54pci.ko driver everything works ok.

Regards
Maciek Kaliszewski

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=EF=BB=BFMake sure you don't have any obsolete version of wpa_supplican= t in
PATH.

Try removing "scan_ssid=3D1". Also try ESSID scanning in iwlist:
iwlist wlan0_rename scanning essid APTEKA

If the recompiled wpa_supplicant fails, try asking in [email protected] (the list for wpa_supplicant and hostapd)

--=20
Regards,
Pavel Roskin
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ant in

I've checked and 0.6.3 is latest development version of wpa_supplicant.

Removing scan_ssid doesn't help .

iwlist wlan0_rename scanning essid APTEKA

gives the same results like

iwlist wlan0_rename scanning
and
iwlist wlan0_rename scanning essid AAAA
so driver ignores essid parameter

It looks like driver issue (driver is returning bogus data)

Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:00:01:00:00:1d ssid=3D'' wpa_ie_len=3D0 rsn_ie_len=3D0 caps=3D0x1= 0
skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:00:01:00:00:1d ssid=3D'' wpa_ie_len=3D0 rsn_ie_len=3D0 caps=3D0x1= 0
skip - SSID mismatch
No suitable AP found

there is no AP with BSSID 00:00:01:00:00:1d and hidden SSID in vicinity= =20
=2E There is only one (my) AP in the range .
Moreover p54pci.ko driver (from the same family ) works just fine=20 with this version of wpa_supplicant .
Command line and config file I run wpa_supplicant with is the same.

Regards
Maciek Kaliszewski

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Well, if iwlist doesn't confuse the driver by "essid", neither should wpa_supplicant.

But why does iwlist display the same data correctly? If iwlist can parse it, wpa_supplicant should be able to parse it as well.

Google search for "Invalid freq in scan results" finds another such case back in year 2004:
http://lists.shmoo.com/pipermail/hostap/2004-March/thread.html#6134

Of course. It looks like the initial "00:00:01:00" is bogus and the final "00:1d" is the beginning of the correct BSSID.

It may be an alignment issue. Different drivers may include different data, in different order.

I suggest that you debug wpa_supplicant, specifically wpa_driver_wext_get_scan_results() in src/drivers/driver_wext.c. Try printing iwe->cmd and iwe->len before the switch. And please move it to the hostap list. If there is anything definitely wrong with the driver, then please let us know.

Regards,
Pavel Roskin

You are right . It may be wpa_supplicant issue . (I'm moving to hostap list as soon as I get subscribed ) Kernel is amd64 and wpa_supplicant is i386 binary.

Regards
Maciek Kaliszewski

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Isn't this the known issue with ioctl compat code when using 64-bit kernel with 32-bit user space? wireless-tools has some workaround code for figuring out what kernel is trying to say in WEXT data, but wpa_supplicant does not have such workaround since I do not believe it belongs to every user space program that is using WEXT.

If I've understood correctly, Dave Miller is working on cleaning up the compat WEXT code (see "Proper compat WEXT support" thread from June 3rd for the patch series). I would hope that that fixes issues with 64/32-bit systems without require all user space programs to be modified to be aware of the bogus data from the kernel. As a temporary workaround, it might help to build 64-bit wpa_supplicant for that kernel.

Jouni Malinen                                            PGP id EFC895FA

Yes.

I think only Jean disagrees.

Yeah, it should be in there. Building a 64-bit wpa supplicant is quite hard unless you have all 64-bit libs already, so maybe it's easier to apply Dave's patches.

johannes

Yes, I know.. I did it once on PS3 and it took some time figuring out which packages I need to install to get proper 64-bit libraries and compiler available. It didn't help that that was the first time I used the particular distro, but anyway, it is doable if one does not want to update the kernel. I hope that the patches go in soon, though, since neither patching a kernel or building 64-bit user space from scratch is something I would consider a good end user requirement.. ;-)

Jouni Malinen                                            PGP id EFC895FA