wireless-tools problem on embedded linux

Hi everyone,

My problem is that my wireless-tools (iwconfig, iwlist) return strange
Bit Rate and Frequency values.

I'm trying to set up a wireless ad-hoc network using a DWL-G122verC1
USB dongle and colibri linux board with a pxa270 arm processor. I'm
using the rt73.ko module downloadable from here:http://
http://www.ralinktech.com/ralink/Hom...ort/Linux.html.

I compiled the newest wireless-tools.28 with the flag BUILD_NOLIBM = y
to make it runnable on my embedded linux platform (otherwise I get an
illegal instruction).


This is the output of iwconfig for my usb wireless interface:
---------
>iwconfig rausb0

rausb0 RT73 WLAN ESSID:"MAVnet"
Mode:Ad-Hoc Frequency=-2.50749e-116 G Cell: 2A:
22:A4:3D:C2:B3
Bit Rate=5.31729e-315 Mb/s
RTS thrff Fragment thrff
Encryption keyff
Link Quality=91/100 Signal level:-50 dBm Noise level:-79
dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
---------

Additional info:
---------
>iwconfig --version

iwconfig Wireless-Tools version 28
Compatible with Wireless Extension v11 to v20.

Kernel Currently compiled with Wireless Extension v17.

eth0 Recommend Wireless Extension v0 or later,
Currently compiled with Wireless Extension v0.

rausb0 Recommend Wireless Extension v14 or later,
Currently compiled with Wireless Extension v17.

>uname -r
2.6.12.4-col2
-----------

As you saw, Bit rate=5.31729e-315 Mb/s and Frequency=-2.50749e-116 G.
Could this be a format problem? I've tried ">iwconfig rausb0 rate 11M"
without result.

Any ideas would be welcome!!
Sabine

(E-Mail Removed) wrote:

> Hi everyone,
>
> My problem is that my wireless-tools (iwconfig, iwlist) return strange
> Bit Rate and Frequency values.
>
> I'm trying to set up a wireless ad-hoc network using a DWL-G122verC1
> USB dongle and colibri linux board with a pxa270 arm processor. I'm
> using the rt73.ko module downloadable from here:http://
> http://www.ralinktech.com/ralink/Hom...ort/Linux.html.
>
> I compiled the newest wireless-tools.28 with the flag BUILD_NOLIBM = y
> to make it runnable on my embedded linux platform (otherwise I get an
> illegal instruction).
>

You may want to double check that the driver and the kernel have
been compiled against the exact same version of wireless extensions
as your tools.

The wireless extension APIs have changed significantly between
versions.

Kind regards,

Iwo

Iwo Mergler wrote:
> (E-Mail Removed) wrote:
>
>> Hi everyone,
>>
>> My problem is that my wireless-tools (iwconfig, iwlist) return strange
>> Bit Rate and Frequency values.
>>
>> I'm trying to set up a wireless ad-hoc network using a DWL-G122verC1
>> USB dongle and colibri linux board with a pxa270 arm processor. I'm
>> using the rt73.ko module downloadable from here:http://
>> http://www.ralinktech.com/ralink/Hom...ort/Linux.html.
>>
>> I compiled the newest wireless-tools.28 with the flag BUILD_NOLIBM = y
>> to make it runnable on my embedded linux platform (otherwise I get an
>> illegal instruction).
>>
>
> You may want to double check that the driver and the kernel have
> been compiled against the exact same version of wireless extensions
> as your tools.
>
> The wireless extension APIs have changed significantly between
> versions.

Although Iwo is correct that WEXT has changed significantly, it is unlikely that this is your
problem. Would your bit rates and frequency values make sense if they were rescaled by 100000, or
some other power of 10? If so, the driver or MAC layer, whichever is handling the WEXT ioctl's, has
just such a scaling problem.

Which kernel are you using?

Larry