On 05/10/2016 09:40 AM, Mohammed Shafi Shajakhan wrote:
On Tue, May 10, 2016 at 09:34:55AM -0700, Ben Greear wrote:
On 05/10/2016 09:27 AM, Mohammed Shafi Shajakhan wrote:
From: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx>
10.4 'extended peer stats' will be not be appended with normal peer stats
data and they shall be coming in separate chunks. Fix this by maintaining
a separate linked list 'extender peer stats' for 10.4 and update
rx_duration for per station statistics. Also parse through beacon filter
(if enabled), to make sure we parse the extended peer stats properly.
This issue was exposed when more than one client is connected and
extended peer stats for 10.4 is enabled
In general, maybe more of these stats should be kept in the driver instead
of the firmware? The firmware is very tight on RAM already, and if
we can pass the needed info back to the host, it could gather arbitrary
amounts of stats as needed.
[shafi] agreed, probably thats why we are tracking u64 counters like rx_duration
etc in host while the firmware variable will wrap aroud in sometime
If firmware could be modified to return more per-frame info, then the driver
could do virtually all of the stats gathering. It would cost a bit of RAM
to hold that descriptor information, but over-all, the firmware might be a lot
simpler....
On the TX side, it would also allow intelligent host-based rate-ctrl. Especially
considering the complexity of mu-mimo, it might be nice to get rate-ctrl into the
kernel where more people can work on it in a more flexible manner.
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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