From a10605e599a7873417043fe2bb559abe719f8a1a Mon Sep 17 00:00:00 2001 From: Zhu Yi Date: Thu, 22 Nov 2007 11:10:22 +0800 Subject: [PATCH] mac80211: free ifsta->extra_ie and clear IEEE80211_STA_PRIVACY_INVOKED 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. 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). On Wed, 2007-11-21 at 16:19 +0100, Johannes Berg wrote: > Yeah. Can you amend the patch to also clear the > IEEE80211_STA_PRIVACY_INVOKED flag? Signed-off-by: Zhu Yi Acked-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/ieee80211.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c index e0ee65a969bc..8f11c97f13d2 100644 --- a/net/mac80211/ieee80211.c +++ b/net/mac80211/ieee80211.c @@ -334,6 +334,11 @@ static int ieee80211_stop(struct net_device *dev) cancel_delayed_work(&local->scan_work); } flush_workqueue(local->hw.workqueue); + + sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; + kfree(sdata->u.sta.extra_ie); + sdata->u.sta.extra_ie = NULL; + sdata->u.sta.extra_ie_len = 0; /* fall through */ default: conf.if_id = dev->ifindex; -- 2.30.2