Re: Question about ath9k/mac80211 Driver

[Larry Finger <Larry.Finger@lwfinger.net>]

On 08/23/2012 11:19 AM, Patrick Connolly wrote:
> Mohammed,
>       Thanks very much for the response.
>
>     Yes I get "Operation not supported":
>
> # iwconfig wlan0 modu 11b
> Error for wireless request "Set Modulation" (8B2F) :
>      SET failed on device wlan0 ; Operation not supported.
>
>     ...so what does this mean; what are my options here?  In view of
> the fact that the capability of changing modes (from 'g' to 'b'
> ...etc.) is an essential requirement, am I using the wrong driver
> ...is there a different driver that supports this chip?  Or is it that
> there's no driver that supports this chip so that I would have to put
> this functionality into ath9k myself if I want it?

Adding that functionality should not be necessary. The simple command

iw dev $WIFIDEV set bitrates legacy-2.4 1 2 5.5 11

will restrict the device to 802.11b rates, which I think is what you want. This 
command does not involve the device driver, but sets the appropriate parameters 
in mac80211.

Larry