On Sun, 2016-08-21 at 10:13 +0000, Mishol, Guy wrote: > Kalle/Thomas, > Thanks for your feedback. > > This time sync support is different from the one that mac80211 maintains with mesh peers. > This time sync is mostly used by upper layers for several applications (like audio). > In this case we allow the user to configure for each zone who will be the synchronizer. > You can refer to the following Application Report (chapter 6) for more information: http://www.ti.com/lit/an/swaa166/swaa166.pdf So it breaks regular mesh synchronization? Power Save, and in the future possibly DFS and MCCA rely on this to work. It sounds like you want some absolute TSF time synchronized within 20us. Mesh TSF synchronization can provide this, it's just a little more complicated as you'll need to compute at the application level using the per-sta offsets. Mesh synchronization accuracy was pretty good IIRC, unfortunately I don't have any test data to share :( thomas
