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Subject: [Bug 208860] [net80211]: ieee80211_waitfor_parent() will hang
 forever if something is enqueued into the taskqueue
Date: Sun, 17 Apr 2016 18:51:48 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D208860

Adrian Chadd <adrian@freebsd.org> changed:

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

--- Comment #1 from Adrian Chadd <adrian@freebsd.org> ---
Yeah, the whole drain/block/cancel thing really irks me with our taskqueue
implementation.

If we want to use the taskqueue for driver related things, then we need some
way to actually cancel/drain all in a sane way. Otherwise we end up only be=
ing
able to waitfor_parent on the net80211 tasks, not the driver tasks.

It's also unclear whether we should be waiting for the driver taskqueue cal=
ls
to drain/complete with waitfor_parent.

This requires a bunch more thought and planning. I'm open to ideas!

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