Johannes Berg <johannes@xxxxxxxxxxxxxxxx> writes: > On Fri, 2019-10-18 at 16:01 +0200, Toke Høiland-Jørgensen wrote: >> >> > We can also play with the units of the airtime, e.g. making that a >> > multiple of 2 or 4 us? Seems unlikely to matter much? >> >> Sure, that's a good point! Increments of 4us means we can fit 4ms is 10 >> bits, leaving plenty of space for ACK IDs (hopefully). > > If you do need more bits (e.g. to be on the safe side and have space for > 8ms) you could also steal bits out of 'band' (we only need 3 I think) > and 'hw_queue' (not sure what the limit really is, but there aren't many > users, seems like only iwlwifi/dvm and hwsim care, and those certainly > don't need >32 queues). > > Of course if you leave more bits for later that's good too ;-) Yeah, let's leave that for later. After all, with the limits we currently have configured, if a single packet takes up 4096 us, that will trigger the per-station queue throttling in itself, so I think we'll be fine (famous last words). -Toke
