cfg80211: add regulatory hint disconnect support

[pandora-kernel.git] / net / wireless / sme.c

diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 745c37e..17fde0d 100644 (file)
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -34,6 +34,44 @@ struct cfg80211_conn {
        bool auto_auth, prev_bssid_valid;
 };
 
+bool cfg80211_is_all_idle(void)
+{
+       struct cfg80211_registered_device *rdev;
+       struct wireless_dev *wdev;
+       bool is_all_idle = true;
+
+       mutex_lock(&cfg80211_mutex);
+
+       /*
+        * All devices must be idle as otherwise if you are actively
+        * scanning some new beacon hints could be learned and would
+        * count as new regulatory hints.
+        */
+       list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+               cfg80211_lock_rdev(rdev);
+               list_for_each_entry(wdev, &rdev->netdev_list, list) {
+                       wdev_lock(wdev);
+                       if (wdev->sme_state != CFG80211_SME_IDLE)
+                               is_all_idle = false;
+                       wdev_unlock(wdev);
+               }
+               cfg80211_unlock_rdev(rdev);
+       }
+
+       mutex_unlock(&cfg80211_mutex);
+
+       return is_all_idle;
+}
+
+static void disconnect_work(struct work_struct *work)
+{
+       if (!cfg80211_is_all_idle())
+               return;
+
+       regulatory_hint_disconnect();
+}
+
+static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
 
 static int cfg80211_conn_scan(struct wireless_dev *wdev)
 {
@@ -658,6 +696,8 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
        wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
        wdev->wext.connect.ssid_len = 0;
 #endif
+
+       schedule_work(&cfg80211_disconnect_work);
 }
 
 void cfg80211_disconnected(struct net_device *dev, u16 reason,