[Bug 213621] WIFI connection is lost periodically on ath0

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213621

--- Comment #12 from Adrian Chadd <adrian at freebsd.org> ---
Hiya,

So the beacon miss / TSFOOR is the driver side. I can go take another look at
fixing that up.

The CCMP replay attack thing - that we need another NIC to sniff the air in
monitor mode and try to capture the invalid PN showing up in the air. If it's
coming over the air then sure, we can nail it down. If it's not coming over the
air, and instead it's corrupted by the AR9380 NIC, we're in trouble.

I need to go double / triple-check to see if we pass frames that fail
CRC/FCS/decrypt up to the stack for incorrect processing. I'm kinda worried
that we're processing invalid frames a little too far along the input /
decryption path.

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