implement MBCA

[twpedersen]

mesh beacon collision avoidance would be nice to have :)

[bcopeland]

patches welcome :)

[chunyeow]

Section 13.13.4:

1. Beacon timing advertisements
2. TBTT selection
3. TBTT adjustment

TBTT adjustment already implemented, right? By the way, how to test and
verify this?

On Tue, Apr 26, 2016 at 4:35 AM, Bob Copeland notifications@github.com
wrote:

patches welcome :)

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#48 (comment)

[bcopeland]

I think TBTT adjustment was originally tested with the tsf debugfs files. Besides MBCA it's needed for proper power-save (which would also be a nice-to-have... I did some non-upstream work in this area a while back and could probably make it work if anyone cares).

I guess TBTT selection/adjustment will only work on ath5k / ath9k since "adjust TSF" isn't a common firmware op. And if you have multiple vifs then I have no idea what you do.

[mporsch]

I did some experiments concerning gradually shifting TBTTs together to increase power save in an idle network: mporsch@bc750c9
Maybe parts of the diff are helpful for TBTT offset calculations needed here as well.

[chunyeow]

Marco, which hardware are you using?
On Apr 28, 2016 3:30 AM, "Marco Porsch" notifications@github.com wrote:

I did some experiments concerning gradually shifting TBTTs together to
increase power save in an idle network: mporsch/open80211s@bc750c9
mporsch@bc750c9
Maybe parts of the diff are helpful for TBTT offset calculations needed
here as well.

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#48 (comment)

[mporsch]

Marco, which hardware are you using?

I used older ath9k chipsets as found in TL-MR3020 and WNDR-3800 routers.