On Fri, Jan 29, 2021 at 01:13:24PM -0800, Vinicius Costa Gomes wrote: > > Secondly, why should at least one queue be preemptible? What's wrong > > with frame preemption being triggered by a tc-taprio window smaller than > > the packet size? This can happen regardless of traffic class. > > It's the opposite, at least one queue needs to be marked > express/non-preemptible.
I meant to ask why should at least one queue be express. The second part of the question remains valid. > But as I said above, perhaps this should be handled in a per-driver > way. I will remove this from taprio. > > I think removing this check/limitation from taprio should solve the > second part of your question, right? Nope. Can you point me to either 802.1Q or 802.3 saying that at least one priority should go to the express MAC?
