On 06/26/2017 04:00 AM, Johannes Berg wrote:
On Fri, 2017-06-23 at 05:27 -0700, Ben Greear wrote:
I don't understand the code well enough to know if this matters or
not, but the ath10k wave-2 stuff has some txq prefetch logic in the
firmware (and support in the driver). But, it doesn't prefetch for
the mgt tid as far as I can tell. It somehow all mostly works
anyway, but possibly this would have some effect on your
changes. wave-1 (QCA 9880, etc) doesn't do txq prefetch at all. Any
tricky changes to this logic would need to test with both chipsets.
I don't think this matters. The issue at hand is that the driver still
relies on mac80211 buffering.
This *can* be solved, even in this piece of code I inserted here, but
it'd have to keep state about the queues and then insert some hooks
elsewhere. I'm pretty sure I can solve that, but don't have the time
(or even hardware) to test this (easily, I have ath10k in a few
routers, but ...).
What/how is it relying on buffering?
I'd be happy to send you plenty of ath10k mini-pcie NICs if that would help.
Just let me know.
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
