On Wed, 2015-03-11 at 21:45 +0530, Krishna Chaitanya wrote: > I did some experiments on this and found the root cause. > > We are using 5GHz in WORLD Mode, so only passive scan is allowed. > So when connecting the very first time, the mac80211 MLME sees that > there are no probe_resp ies (only beacon_ies are present) and it sends > a directed probe and updates the probe_resp ies. (and also the "ies"). > > But when config is changed and we get disconnected, beacon_ies are updated > with the new config, but the probe_resp ies are not. > cfg80211_bss_update assigns > probe_resp ies to "ies' and mac80211 updates its bss info based on the > probe_resp > ies which have old config causing the issue. > > Solution: > > 1) Make the directed probe mandatory. > 2) As you suggested maintain timestamps for probe_resp_ies and beacon_ies > and use the latest. > > Any takes? What's the operational problem here? I don't really see it. Are you afraid users will reconfigure their APs often enough for this to be an issue? johannes -- 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
