[driverloader] Driverloader on embedded linux (prism2_hostapd: unknown cmd=14)

Linuxant support (Jonathan) support at linuxant.com
Fri Feb 11 13:32:24 EST 2005


you are able to get this far on the embedded system, then DriverLoader 
is correctly installed. After the Windows XP driver is installed, 
DriverLoader only needs write access to the '/etc/driverloader'.

For the use of the 'dldrconfig' script, you no longer need it but you 
should replace this script with a dummy shell script because the 
DriverLoader module will attempt to call this script.

On the embedded system, did you tried to use DriverLoader without WPA to 
see if WPA is the source of the problem? Did you compiled the kernel on 
your embedded system with the same options and same kernel source as on 
the development machine? The "ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not 
supported" error message is returned by the kernel.


Technical specialist / Linuxant
support at linuxant.com

Mattias Seeman wrote:
> Hello!
> A little background: I'm working on a robot project and need to get 
> wireless networking on an embedded linux system. This "embedded linux 
> distribution" (built with HLinux by www.hectronic.se) is based on a 
> Debian "host system". Driverloader is installed on the host system and 
> works perfectly (TYVM :-) with a Belkin F5D7050 (USB 2.0 Adaptor 802.11g 
> 54Mbps). WPA with wpa_supplicant is also used without problems.
> So I'm trying to migrate the driverloader to the embedded system. I've 
> built a custom kernel (2.4.26) and compiled driverloader.o with this 
> kernel-source.
> <important>
> What I'm looking for is really a way to configure driverloader without 
> the need for perl interpreter or web browser (i.e. w/o running 
> dldrconfig??).
> </important>
> modules.dep is not preserved in the migration but I can "insmod 
> /lib/modules/2.4.26-xxx/extra/driverloader.o" just as well as on the 
> host system. <hack>I've manually edited /etc/driverloader/config/* files 
> to reflect the embedded system (and placed them on a read/write fs).</hack>
> As you can see from output below wpa_supplicant finds the AP but fails 
> to complete key negotiation. Problems seem to arise at the call 
> "ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not supported" (i.e 
> "prism2_hostapd: unknown cmd=14").
> Do any other special files be on a read/write fs (since the root fs is 
> read-only)?
> <dmesg output>
> hub.c: new USB device 00:13.0-2, assigned address 4
> driverloader: prismaxp.sys: 0xc4a59000..0xc4aab3a0 entry = c4a7511f 
> (pbase = 0x10000)
> eth1: New link status: Disconnected (0002)
> eth1: WPA, AES, TKIP, WEP128, WEP64 supported
> eth1: GlobespanVirata, Inc. at 00:13.02 (MAC address 00:30:BD:AF:AE:BE) 
> ready
> prism2_hostapd: unknown cmd=14
> prism2_hostapd: unknown cmd=14
> prism2_hostapd: unknown cmd=14
> </dmesg output>
> <ifconfig output>
> $ ifconfig eth1
> eth1      Link encap:Ethernet  HWaddr 00:30:BD:AF:AE:BE
>          UP BROADCAST MULTICAST  MTU:1500  Metric:1
>          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
> </ifconfig output>
> <wpa_supplicant output>
> $ wpa_supplicant -ieth1 -d -c/etc/wpa_supplicant.conf
> Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
> Reading configuration file '/etc/wpa_supplicant.conf'
> wpa_driver_hostap_set_wpa: enabled=1
> wpa_driver_hostap_set_key: alg=none key_idx=0 set_tx=0 seq_len=0 key_len=0
> wpa_driver_hostap_set_key: alg=none key_idx=1 set_tx=0 seq_len=0 key_len=0
> wpa_driver_hostap_set_key: alg=none key_idx=2 set_tx=0 seq_len=0 key_len=0
> wpa_driver_hostap_set_key: alg=none key_idx=3 set_tx=0 seq_len=0 key_len=0
> wpa_driver_hostap_set_countermeasures: enabled=0
> wpa_driver_hostap_set_drop_unencrypted: enabled=1
> Setting scan request: 0 sec 100000 usec
> Starting AP scan (specific SSID)
> Scan SSID - hexdump_ascii(len=7):
>     72 61 74 66 61 63 65                              ratface
> ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not supported
> Failed to initiate AP scan.
> Scan timeout - try to get results
> Received 269 bytes of scan results (1 BSSes)
> Scan results: 1
> 0: 00:11:95:01:5d:52 ssid='ratface' wpa_ie_len=24 rsn_ie_len=0
> Trying to associate with 00:11:95:01:5d:52 (SSID='ratface' freq=2437 MHz)
> Cancelling scan request
> WPA: using IEEE 802.11i/D3.0
> </wpa_supplicant output>
> ANY help much appreciated..., thanks in advance!
> \Mattias Seeman
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