[rt2x00-users] RT3070 support in rt2800usb driver?

[Helmut Schaa]

On Wed, Sep 22, 2010 at 10:16 AM, Johannes Stezenbach <js at sig21.net> wrote:
> On Wed, Sep 22, 2010 at 08:24:16AM +0200, Helmut Schaa wrote:
>> On Tue, Sep 21, 2010 at 6:29 PM, Johannes Stezenbach <js at sig21.net> wrote:
>> > On Tue, Sep 21, 2010 at 02:42:48PM +0200, Johannes Stezenbach wrote:
>> > I went ahead and tried stable compat-wireless-2.6.36-rc3-1
>> > with a 2.6.32 kernel, and it seems that it works
>> > in station, ibss and AP modes.
>>
>> Nice ;)
>>
>> > However, so far my testing
>> > was only very brief.  I would be very grateful for some
>> > status update from the developers point of view, especially
>> > regarding stability, known issues etc.
>>
>> At least AP mode won't be 100% accurate due to the inability of the device to do
>> proper multi- and broadcast buffering for powersaving stations (the PCI variants
>> don't have this problem). Not sure about the general level of support
>> for RT3070.
>
> This inability is a hardware limitation, not a driver issue, right?

Right.

> And is the result dropped multi/broadcast packets or higher power
> consumption of the stations?

AFAIK buffered bc and mc frames are never send out if at least one station is
powersaving. A slightly better behavior would be to not buffer the
frames and send
them out even if the station cannot receive it.

So, in short, bc- and mc traffic will be lost at the moment.

Helmut