Re: rt73usb Access point status

Johannes Berg
2009-04-30T13:56:14Z

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On Thu, 2009-04-30 at 06:41 -0700, Joerg Pommnitz wrote:
> > Based on that information, I have removed the "Yes (under development)"
> > note from the driver page since it doesn't really support it... In fact,
> > I'm surprised it works even with that hack since hostapd usually polls
> > the station with nullfunc frames and waits for an ack.
>
> Reading the mail from Ivo (http://sourceforge.net/mailarchive/message.php?msg_id=200808082059.11968.IvDoorn%40gmail.com)
> I gather that the ACK in question is not from the peer but from the local
> hardware indicating that the frame was actually sent and not lost due to
> some local error.

No, the ACK in question is this one:

local remote
--- nullfunc frame --->
<------- ACK ----------

Apparently rt73usb is incapable of telling the driver that it got this
ACK frame, and as such hostapd will not be informed about that, and then
it will expire the station if it's otherwise idle.

johannes

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