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>

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 46082125f3e19f9e9a889ec26c87fcb7aa23f69b..9ab772ac74aefec4c93d47784eaae05b92239d2c 100644 (file)
--- 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);
                /*