Re: Please pull 'upstream' branch of rt2x00

[Ivo van Doorn <ivdoorn@gmail.com>]

> > > For rt73? IIRC the rate selection algo does not work at all for that
> > > device, because we cannot report failed frames. Or have you done
> > > anything about that I might have missed, Ivo? If not, the rate is
> > > probably fixed at 54Mbit anyway.
> > 
> > Well I didn't do anything new, but this line will report rt2x00lib that the
> > frame was succesfully send or failed to send:
> > 	txdesc.status = !urb->status ? TX_SUCCESS : TX_FAIL_RETRY;
> > What is missing is the retry count, since that is something that
> > the USB drivers cannot report. (Unless I grab the max retry count
> > as configured by mac80211 as the number of retries on failure)
> 
> Well, I have just put my rt73 into a metal box. Many frames do fail,
> only very few get through pinging my AP. The rate control still keeps
> the rate at 54Mbit/s :-) So it seems neither excessive_retries nor the
> retry_count in the tx_status struct is set at all.

Hmm, perhaps we need some way the driver can inform the rate selection
module about statistics. I mean the hardware does measure the number
of failed TX frames, and the number of retries, but it doesn't set them
in the descriptor but in the hardware.

Ivo