On Tue, 2007-11-20 at 14:37 +0100, Johannes Berg wrote: > On Tue, 2007-11-20 at 14:55 +0800, Zhu Yi wrote: > > I'm not sure if this is best choice, someone might have better > > solutions. But this patch fixed the connection problem when switching > > from a WPA enabled AP (using wpa_supplicant) to an open AP (using > > iwconfig). The root cause is when we connect to a WPA enabled AP, > > wpa_supplicant sets the ifsta->extra_ie thru SIOCSIWGENIE. But if we > > stop wpa_supplicant and connect to an open AP with iwconfig, there is > > no way to clear the extra_ie so that mac80211 keeps connecting with that. > > Fun. > > > Someone could argue wpa_supplicant should clear the extra_ie during > > its shutdown. But mac80211 should also handle the unexpected shutdown > > case (ie. killall -9 wpa_supplicant). > > Yes. But if you do that, the interface won't be down either. Maybe this > should also be done when removing keys? That seems better to me; although couldn't it also be cleared when setting static WEP keys? Dynamic WEP shouldn't care about the IE bits either, so any time a WEP key is set and you're _not_ doing WPA the IE could get cleared. Though on the other hand, the interface isn't going to work much longer after wpa_supplicant goes away anyway, depending on how long the group/multicast rekey interval is. Dan - 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
