On Tue, Sep 14, 2021 at 09:12:52PM +0200, Stefan Hagen wrote: > I'm running with this since you posted it. No issues so far.
Thank you! Some people are seeing occasional hangs. It's been observed that systat reports no interrupts on iwx0 when this happens. I know that the Linux driver has workarounds for "stuck queues". It looks like we will need to apply those as well. Another symptom I've seen is SSH failing to connect part way through because packets with the TCP_NODELAY option were sent to a Tx agg queue that was stuck, while other packets made it out. This is quite confusing: ping and tcbench of any packet size are working, but ssh hangs as if there was some MTU issue. People might end up wasting time trying to debug their network and pf when they run into this. So my position is that the patch we have now is stable enough to be committed to -current and improved further over the course of the next release cycle. I would not put it into the 7.0 release, though.
