On Wed, 2010-06-09 at 09:36 +0200, ext Johannes Berg wrote: > On Wed, 2010-06-09 at 07:45 +0300, Teemu Paasikivi wrote: > > > > However this kinda confuses me. > > > > > > We had a long-standing TODO item on our list at > > > http://wireless.kernel.org/en/developers/todo-list > > > > > > "when leaving an IBSS and we were the only member, remove it from > > > cfg80211's BSS list" > > > > > > Maybe that would help here too? > > > > > > > Yes, I think that would propably solve that issue where IBSS was > > recreated and requested basic rates are changed. > > Want to take a look at it? It shouldn't be too hard -- just call > cfg80211_unlink_bss() somewhere where we still have the BSS pointer. > Actually we don't keep it as you saw with the update, so need to find it > first and then unlink it. > I'll take a look at this. I think BSS can be got by the same method as in the ieee80211_sta_find_ibss function. > > > However I don't understand the scenario anyway. If you create an IBSS, > > > you start beaconing and tell cfg80211 about it with a frame that > > > includes the supported and basic rates. Then you leave, but the BSS > > > stays around in cfg80211 for 15 seconds. If you re-join within those 15 > > > seconds, the scan results will pick up the old IBSS that no longer > > > exists, and we "join" it rather than creating it. > > > > > > However -- joining it will take the basic rates from it. So wouldn't you > > > get the old basic rates which is fine? What do you mean by "left unset"? > > > > > > > By "left unset" I mean that in the sniffer logs there's no rates marked > > as basic rates in the beacons. No old ones or new ones. > > Ok that's what I thought. But ... are they marked in our TX beacons when > we _first_ created the IBSS? Yes those were marked. In any case, lets see if this is an issue after implementing that removal of the BSS from the cfg80211's list. > > > > What happens if you join an IBSS that already exists? > > > > > > > It works, but I haven't captured what's in the air. That's one reason > > why I sent these patches as RFC. > > I don't really see how the two scenarios differ, so that's odd... > > johannes > Teemu -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
