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From: =?UTF-8?Q?Bj=C3=B6rn_Smedman?= <bjorn@openias.org>
Date: Sat, 29 Oct 2016 22:50:55 +0200
Message-ID: <CAGp19xeDOdF+YuZ34sQrFY+NO4kvzAzuFr0+3Ae62v-a-0eUtg@mail.gmail.com> (sfid-20161029_225102_971045_D810C80B)
Subject: Re: Bayesian rate control
To: Johannes Berg <johannes@sipsolutions.net>,
        Adrian Chadd <adrian@freebsd.org>,
        =?UTF-8?B?VGhvbWFzIEjDvGhu?= <thomas@inet.tu-berlin.de>,
        Dave Taht <dave.taht@gmail.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        ath9k-devel <ath9k-devel@lists.ath9k.org>
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Sender: linux-wireless-owner@vger.kernel.org

Thomas, Dave, Adrian, Johannes,

Thanks for comments and encouragement. I bought the TP-Link TL-WA901ND
access point and TP-Link TL-WDN4800 PCIe card. Had no problem getting
them talking to each other with ath9k, and the rate table contains 52
entries, so plenty to start out with.

I've written a follow-up post about it if anybody's interested:
http://www.openias.org/bayesian-wifi-materials-and-methods

Cheers,

Bj=C3=B6rn

On Wed, Oct 26, 2016 at 7:56 AM, Johannes Berg
<johannes@sipsolutions.net> wrote:
>
>> The intel 7260 and later parts also allow user controllable rate
>> control and provide transmit completion feedback, but I don't know
>> whether it's enough for your needs.
>
> Perhaps. However, existing rate control is *very* tightly coupled to
> the driver, and it'd be fairly pointless to disentangle just for the
> sake of playing with a rate control algorithm.
>
> Also, the device doesn't support per-frame control nor any kind of
> sampling-with-table-fallback, only the rate table that you give to the
> device and update.
>
> Btw, mac80211_hwsim with wmediumd doing some medium simulation might
> also be something to look at for just extending to VHT.
>
> And come to think of it, there's this new driver Felix et al have been
> working on, mt7601u, which also should support proper rate control
> APIs.
>
> johannes