Re: [RFC] mac80211: Notify new IBSS network creation

[Sujith Manoharan <c_manoha@qualcomm.com>]

Johannes Berg wrote:
> That looks a bit different from what I thought though? Not really sure I
> understand that though :-)

The basic issue was that we were not initializing the timers based on
the sync'd TSF.

> What I'm thinking is that if you always just start beaconing, wouldn't
> you just reset the beacon whenever you notice a higher TSF show up in
> the network?
> 
> Actually I think we call reset_tsf() or something like that? But all of
> that has always seemed very quirky to me.

Currently, I don't think we reset the beacon/timers for IBSS mode.

For station mode, all of this is handled in ath9k using the 
PS_WAIT_FOR_BEACON/PS_BEACON_SYNC flags. For IBSS creator mode, there is
no problem because mac80211 calls reset_tsf() in __ieee80211_sta_join_ibss().
For joiner mode, drivers like ath9k need to do a beacon-sync (like station),
before starting to pollute the environment with beacons, but there is no way to know
if an existing IBSS network is being joined.

Sujith