Re: mac80211: Set IEEE80211_TXPD_REQ_TX_STATUS for all TX frames

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

On Tuesday 13 May 2008, Johannes Berg wrote:
> 
> > > What about monitor interfaces/injection? Do they already set it?
> > 
> > No, should they?
> 
> Yes, I think so, since hostapd uses injection for frames and definitely
> needs status callback. We could later define a radiotap bit for that, of
> course.

Ok, I'll update the patch.

> > We could even make it so that the mac80211 tx_status handler will ignore
> > the frame when the flag is set so drivers won't have to look at it at all.
> 
> You mean "when the flag is unset"? Not sure, maybe we should, but we'll
> see that when more uses for it come up/better rate control algorithms
> are developed.

The most important frames the issue currently arises is with RTS and CTS-to-self
frames. rt2x00 requests those frames from mac80211 and currently clears the
IEEE80211_TXCTL_REQ_TX_STATUS flag to prevent it being send to mac80211
to not upset the rc-algorithm.

Ivo