[Make-wifi-fast] [PATCH RFC v3 0/4] Move TXQ scheduling into mac80211

Toke Høiland-Jørgensen toke at toke.dk
Thu Sep 13 05:25:23 EDT 2018

Kan Yan <kyan at google.com> writes:

>> I think this is a great approach, that we should definitely adopt in
>> mac80211. However, I'm not sure the outstanding airtime limiting should
>> be integrated into the fairness scheduling, since there are drivers such
>> as ath9k that don't need it.
>> Rather, I'd propose that we figure out the API for fairness scheduling
>> first, and add the BQL-like limiter as a separate layer. They can be
>> integrated in the sense that the limiter's estimate of airtime can be
>> used for fairness scheduling as well in the case where the
>> driver/firmware doesn't have a better source of airtime usage.
>> Does that make sense?
> Sure that make sense. Yes, the airtime based BQL like queue limiter is
> not needed for drivers such as ath9k. We could leave the outstanding
> airtime accounting and queue depth limit to another subject and get
> airtime fairness scheduling API done first.

Cool! I was thinking I would stub out an untested PoC in a separate
patch on my next submission, to show how I think this could be
incorporated. Have some other stuff to finish up this week, but
hopefully I'll have time to do the next version over the weekend :)


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