mac80211: Deny TX BA session requests during disassociation

In associated state, when bringing an interface down, existing
BA sessions are torn down. When this is in progress, nothing
prevents mac80211 from accepting another BA session start request.

Use a new station flag to fix this.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index ee9443dc20ff..bfc4a5070013 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -797,8 +797,10 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata)
 
         rcu_read_lock();
         sta = sta_info_get(sdata, bssid);
-        if (sta)
+        if (sta) {
+                set_sta_flags(sta, WLAN_STA_DISASSOC);
                 ieee80211_sta_tear_down_BA_sessions(sta);
+        }
         rcu_read_unlock();
 
         changed |= ieee80211_reset_erp_info(sdata);