mac80211: remove dummy STA support

The dummy STA support was added because I didn't
want to change the driver API at the time. Now
that we have state transitions triggering station
add/remove in the driver, we only call add once a
station reaches ASSOCIATED, so we can remove the
dummy station stuff again.

While at it, tighten the RX check and accept only
port control (EAP) frames from the AP station if
it's not associated yet -- in other cases there's
no race.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 12 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 40b929d..d04811a 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1581,7 +1581,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
 	 * station info was already allocated and inserted before
 	 * the association and should be available to us
 	 */
-	sta = sta_info_get_rx(sdata, cbss->bssid);
+	sta = sta_info_get(sdata, cbss->bssid);
 	if (WARN_ON(!sta)) {
 		mutex_unlock(&sdata->local->sta_mtx);
 		return false;
@@ -1648,14 +1648,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
 		return false;
 	}
 
-	/* 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"
-		       " the AP (error %d)\n", sdata->name, err);
-		return false;
-	}
+	mutex_unlock(&sdata->local->sta_mtx);
 
 	/*
 	 * Always handle WMM once after association regardless
@@ -2536,12 +2529,10 @@ static int ieee80211_pre_assoc(struct ieee80211_sub_if_data *sdata,
 	if (!sta)
 		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"
+		printk(KERN_DEBUG "%s: failed to insert STA entry for"
 		       " the AP (error %d)\n", sdata->name, err);
 		return err;
 	}