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

["Luis R. Rodriguez" <lrodriguez@atheros.com>]

On Tue, Jan 06, 2009 at 12:32:47PM -0800, Gertjan van Wingerde wrote:
> 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?

You can help contribute to the wireless-regdb and check that the valid
channels apply there.

  Luis