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authorZhu Yi <yi.zhu@intel.com>2007-11-22 11:10:22 +0800
committerJohn W. Linville <linville@tuxdriver.com>2007-11-29 18:08:47 -0500
commita10605e599a7873417043fe2bb559abe719f8a1a (patch)
tree03447d2c1c0834289d6570e95445043630090615 /net
parentd9f8bcbf67a0ee67c8cb0734f003dfe916bb5248 (diff)
downloadblackbird-op-linux-a10605e599a7873417043fe2bb559abe719f8a1a.tar.gz
blackbird-op-linux-a10605e599a7873417043fe2bb559abe719f8a1a.zip
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 <yi.zhu@intel.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/ieee80211.c5
1 files changed, 5 insertions, 0 deletions
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;
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