1 files changed, 53 insertions, 6 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index d6470c7fd6ce..60a6f273cd30 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1482,10 +1482,14 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
 
 	ifmgd->aid = aid;
 
-	sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
-	if (!sta) {
-		printk(KERN_DEBUG "%s: failed to alloc STA entry for"
-		       " the AP\n", sdata->name);
+	mutex_lock(&sdata->local->sta_mtx);
+	/*
+	 * station info was already allocated and inserted before
+	 * the association and should be available to us
+	 */
+	sta = sta_info_get_rx(sdata, cbss->bssid);
+	if (WARN_ON(!sta)) {
+		mutex_unlock(&sdata->local->sta_mtx);
 		return false;
 	}
 
@@ -1556,7 +1560,8 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
 	if (elems.wmm_param)
 		set_sta_flags(sta, WLAN_STA_WME);
 
-	err = sta_info_insert(sta);
+	/* sta_info_reinsert will also unlock the mutex lock */
+	err = sta_info_reinsert(sta);
 	sta = NULL;
 	if (err) {
 		printk(KERN_DEBUG "%s: failed to insert STA entry for"
@@ -2429,6 +2434,32 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 	return 0;
 }
 
+/* create and insert a dummy station entry */
+static int ieee80211_pre_assoc(struct ieee80211_sub_if_data *sdata,
+				u8 *bssid) {
+	struct sta_info *sta;
+	int err;
+
+	sta = sta_info_alloc(sdata, bssid, GFP_KERNEL);
+	if (!sta) {
+		printk(KERN_DEBUG "%s: failed to alloc STA entry for"
+			   " the AP\n", sdata->name);
+		return -ENOMEM;
+	}
+
+	sta->dummy = true;
+
+	err = sta_info_insert(sta);
+	sta = NULL;
+	if (err) {
+		printk(KERN_DEBUG "%s: failed to insert Dummy STA entry for"
+		       " the AP (error %d)\n", sdata->name, err);
+		return err;
+	}
+
+	return 0;
+}
+
 static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
 						  struct sk_buff *skb)
 {
@@ -2436,9 +2467,11 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
 	struct ieee80211_mgmt *mgmt;
 	struct ieee80211_rx_status *rx_status;
 	struct ieee802_11_elems elems;
+	struct cfg80211_bss *cbss = wk->assoc.bss;
 	u16 status;
 
 	if (!skb) {
+		sta_info_destroy_addr(wk->sdata, cbss->bssid);
 		cfg80211_send_assoc_timeout(wk->sdata->dev, wk->filter_ta);
 		goto destroy;
 	}
@@ -2468,12 +2501,16 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
 		if (!ieee80211_assoc_success(wk, mgmt, skb->len)) {
 			mutex_unlock(&wk->sdata->u.mgd.mtx);
 			/* oops -- internal error -- send timeout for now */
+			sta_info_destroy_addr(wk->sdata, cbss->bssid);
 			cfg80211_send_assoc_timeout(wk->sdata->dev,
 						    wk->filter_ta);
 			return WORK_DONE_DESTROY;
 		}
 
 		mutex_unlock(&wk->sdata->u.mgd.mtx);
+	} else {
+		/* assoc failed - destroy the dummy station entry */
+		sta_info_destroy_addr(wk->sdata, cbss->bssid);
 	}
 
 	cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len);
@@ -2492,7 +2529,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_bss *bss = (void *)req->bss->priv;
 	struct ieee80211_work *wk;
 	const u8 *ssid;
-	int i;
+	int i, err;
 
 	mutex_lock(&ifmgd->mtx);
 	if (ifmgd->associated) {
@@ -2517,6 +2554,16 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	if (!wk)
 		return -ENOMEM;
 
+	/*
+	 * create a dummy station info entry in order
+	 * to start accepting incoming EAPOL packets from the station
+	 */
+	err = ieee80211_pre_assoc(sdata, req->bss->bssid);
+	if (err) {
+		kfree(wk);
+		return err;
+	}
+
 	ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N;
 	ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;