[Bug 227602] [regression] r304629 broke ralink USB hostap mode with authmode WPA2

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227602

--- Comment #7 from Hans Petter Selasky <hselasky at FreeBSD.org> ---
Hi,

In the log-with-r304629.pcap I clearly see ERR=IOERROR which is not present in
the other log file.

I suspect that your XHCI controller needs a quirk, I.E. the old behaviour.

If I were to guess, the problem is that your XHCI controller executes the
status stage instantly after the so-called USB data stage, because the patch
make the DMA jobs back to back. The ralink dongle doesn't handle this and
IOERROR usually means no response. Typically this patch makes the status stage
execute after the next SOF. This should be handled automagically by the XHCI
controller.

Can you post the output of "pciconf -lv" for your XHCI PCI device?

I guess we can make the #ifdef into a system tunable, and then you can set it
in /boot/loader.conf ?

--HPS

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