mac80211: deauth when interface is marked down

It seems like proper etiquette to let other stations know when we are
going down in either STA or IBSS mode.  This also notifies userland, so
wpa_supplicant doesn't get confused.

Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 46082125f3e1..9ab772ac74ae 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -435,7 +435,11 @@ static int ieee80211_stop(struct net_device *dev)
                 break;
         case NL80211_IFTYPE_STATION:
         case NL80211_IFTYPE_ADHOC:
-                sdata->u.sta.state = IEEE80211_STA_MLME_DISABLED;
+                /* Announce that we are leaving the network. */
+                if (sdata->u.sta.state != IEEE80211_STA_MLME_DISABLED)
+                        ieee80211_sta_deauthenticate(sdata,
+                                                WLAN_REASON_DEAUTH_LEAVING);
+
                 memset(sdata->u.sta.bssid, 0, ETH_ALEN);
                 del_timer_sync(&sdata->u.sta.timer);
                 /*