[Bug 250424] [rtwn] an USB device could panic under load: panic: not an HT sta

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 10 Nov 2024 04:29:52 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250424

Adrian Chadd <adrian@freebsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |adrian@freebsd.org

--- Comment #2 from Adrian Chadd <adrian@freebsd.org> ---
This one is .. interesting. "Not a HT STA" means that something tagged a frame
as M_AMPDU but the STA wasn't an 11n one. Either it's because there's stale
frames left in the driver queue across some kind of interface restart or the
mbuf flag (M_AMPDU) is set incorrectly.

I don't see where it's being set in rtwn, which is odd because I /thought/ it
was doing AMPDU RX at the very least. So if it's not doing 11n RX then you
shouldn't ever be seeing this!

Lemme find my RTL8188EU and see if it's still reproducable. I'm neck deep in
weird rtwn corner cases right now.

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