Re: [PATCH] rt2x00: Provide regulatory hint with rt2500pci/usb

[Gertjan van Wingerde <gwingerde@kpnplanet.nl>]

On 01/06/09 00:45, Luis R. Rodriguez wrote:
> On Mon, Jan 05, 2009 at 02:21:46PM -0800, Ivo van Doorn wrote:
>    
>> On Monday 05 January 2009, Gertjan van Wingerde wrote:
>>      
>>> On 01/05/09 21:08, Luis R. Rodriguez wrote:
>>>        
>>> The problem isn't there for the bits that Ivo sent, as the rt2500 devices don't support the a band.
>>>        
>> For rt2500pci and rt2500usb there are chipsets which support 5GHz (they are rare, but they do exist),
>> comments for the Ralink drivers indicate they simply didn't add the regulatory domain definitions yet.
>>      
>
> Based on the documentation from the EEPROM for all devices I read that its recommended
> that the EEPROM *not be relied on for the regulatory domain*, instead it recommends the
> windows registry be used.
>
> Based on tests for the devices with only one band, do are you seeing an actual regulatory
> domain in the EEPROM?
>
> To deal with the issue of having two separate EEPROM values for a regulatory domain
> and since the documentation indicates to not rely on it I would advise to allow users
> to be compliant by selecting the country they are in. wpa_supplicant has support for
> selecting country now, and so does iw. Eventually I see Network Manager letting users
> select the country. But you guys are the maintainers and developers so you will know
> better.
>    

My tests indicate that there are devices out there that have this 
information set in the EEPROM. Based on tests with my own patch, and my 
own devices, I have been able to determine the following:

1. rt2400pci --> don't know, don't own a rt2400pci device.
2. rt2500pci --> don't know, don't own a rt2500pci device anymore.
3. rt2500usb --> my e-tech device (not sure which type; the device 
doesn't say it) has an actual domain set for the bg band.
4. rt61pci --> my Sitecom WL151 device does not contain actual domain 
information.
5. rt73usb --> my Sitecom WL113-002 device does contain actual domain 
information, and the codes for the bg band and a band are the same.
6. rt2800pci --> my Sitecom WL182 device does contain actual domain 
information, and the codes for the bg band and a band are the same.
7. rt2800usb --> my Sitecom WL181 device does contain actual domain 
information, and the codes for the bg band and a band are the same.

So, there are devices out there that do contain "meaningful" regulatory 
information.

Luis, the definitions for the a-band EEPROM codes only give the channel 
numbers, it doesn't indicate a real "country". Is there any way we can 
check whether these sets of channels are actually consistent with the 
regulations of specific countries?

---
Gertjan.