[PATCH] mac80211: fail back to use associate from reassociate

[Zhu Yi <yi.zhu@intel.com>]

mac80211: fail back to use associate from reassociate failure

Some APs have strict checking between associate and reassociate. In
a case when an AP is restarted during a connection, it denies the
mac80211 reassoc request since this is a new association for the AP.
To fix this problem, we need to check the status code against
WLAN_STATUS_REASSOC_NO_ASSOC and clear ifsta->prev_bssid_set in
handling the association failure response.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>

diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index b003912..dacd2d3 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1182,6 +1182,8 @@ static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
 	if (status_code != WLAN_STATUS_SUCCESS) {
 		printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
 		       dev->name, status_code);
+		if (status_code == WLAN_STATUS_REASSOC_NO_ASSOC)
+			ifsta->prev_bssid_set = 0;
 		return;
 	}