[rt2x00-users] running AP mode and sta/adhoc mode in parallel

[Helmut Schaa]

On Mon, Dec 19, 2011 at 11:32 AM, Ivo Van Doorn <ivdoorn at gmail.com> wrote:
> Hi,
>
>> I tested the rt2x00 driver on an RT3052 Soc and noticed it does not support AP
>> mode and station/adhoc mode opearting in parallel. After some digging in the
>> git history of rt2x00 I found 2 commits (0fc980392e5a06 and 62e70cf856)
>> claiming that this would not be possible or at least not worthwhile to do. I
>> am wondering whether it really is impossible or whether it "just" is a lot of
>> work. If it is doable how much work would it be ?
>
> The device is simply not capable of doing it.

Basically I agree :)

I guess the biggest issue is that the AP and STA mode interface have to share
the hardware TSF timer. That means the STA mode interface cannot correctly
sync up with the AP and as such wouldn't be able to implement power save
functionality. Or the AP TSF timer would jump from time to time and this confuse
its clients.

Other then that I think it would be possible to do since the device can have
up to 8 consecutive MACs. But this would need quite some effort in rt2x00.

Helmut