mac80211: send delBA on unexpected BlockAck data frames

[cascardo/linux.git] / net / mac80211 / rx.c

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 284f0f2..ad636c9 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1122,8 +1122,15 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx,
        tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
 
        tid_agg_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]);
-       if (!tid_agg_rx)
+       if (!tid_agg_rx) {
+               if (ack_policy == IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK &&
+                   !test_bit(tid, rx->sta->ampdu_mlme.agg_session_valid) &&
+                   !test_and_set_bit(tid, rx->sta->ampdu_mlme.unexpected_agg))
+                       ieee80211_send_delba(rx->sdata, rx->sta->sta.addr, tid,
+                                            WLAN_BACK_RECIPIENT,
+                                            WLAN_REASON_QSTA_REQUIRE_SETUP);
                goto dont_reorder;
+       }
 
        /* qos null data frames are excluded */
        if (unlikely(hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_NULLFUNC)))