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Date:      Mon, 11 Apr 2016 09:13:01 -0700
From:      Adrian Chadd <adrian@freebsd.org>
To:        "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org>
Subject:   Re: urtwn and rssi reporting
Message-ID:  <CAJ-Vmo=q6Q=oKekE-RPBumcbQPney=-HEht0x_xuY5KdAiaj5w@mail.gmail.com>
In-Reply-To: <CAJ-VmokSxcCOGAw424-S790wKaf9hAXtoZOD6k6Dyh8uFDhomA@mail.gmail.com>
References:  <CAJ-VmokSxcCOGAw424-S790wKaf9hAXtoZOD6k6Dyh8uFDhomA@mail.gmail.com>

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Hi,

Right. It's because with A-MPDU decap now we're getting the PHY
notifications once per frame, not for all frames. I bet TSF is the
same.

I'll commit something I have here that only updates the RSSI value for
a node when we see a value, and just reuses the previous value. I
don't know yet if we get the RSSI on the first or last subframe of an
A-MPDU; we should test that and document it.



-adrian



On 5 April 2016 at 21:00, Adrian Chadd <adrian@freebsd.org> wrote:
> hiya,
>
> I've noticed that RSSI reporting during active traffic seems
> unreliable. I'm guessing that we're only getting RSSI reports every
> handful of frames now (which may be because we're doing RX AMPDU; not
> sure!) and so the report tends to be unreliable.
>
> Any ideas?
>
>
> -a



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