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

[Johannes Berg <johannes@sipsolutions.net>]

On Wed, 2012-09-26 at 13:37 +0530, Sujith Manoharan wrote:
> 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.

Right, makes sense. I have no objections to this patch, just wanted to
understand the issue better.

johannes