Re: [Make-wifi-fast] [PATCH RFC v3 1/4] mac80211: Add TXQ scheduling API

[Johannes Berg <johannes@sipsolutions.net>]

On Mon, 2018-09-10 at 15:08 +0200, Toke Høiland-Jørgensen wrote:
> Johannes Berg <johannes@sipsolutions.net> writes:
> 
> > On Mon, 2018-09-10 at 14:39 +0200, Toke Høiland-Jørgensen wrote:
> > 
> > > > From then on, right now we basically just try to refill the hardware
> > > > queue from the TXQ whenever the hardware releases frames from that
> > > > queue. If there are none, we fall back to putting them on the hardware
> > > > queue from the wake signal.
> > > 
> > > OK. So if the TXQ is ineligible to dequeue packets, but still have them
> > > queued, there would need to be a signal (such as wake_txq()) when it
> > > becomes eligible again, right?
> > 
> > Right. It wouldn't have to be wake_txq, but that seems as appropriate as
> > anything else.
> > 
> > If we were to use ieee80211_airtime_may_transmit(), we'd have to have
> > something that tells us "I previously told you it may not transmit, but
> > now I changed my mind" :-)
> 
> Yes, exactly. Hmm, I'll see what I can come up with :)

No need to look at this right now - let's get this stuff sorted out
first :)

johannes