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-rw-r--r--net/mac80211/agg-tx.c6
-rw-r--r--net/mac80211/rx.c13
2 files changed, 15 insertions, 4 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index c163d0a149f4..98258b7341e3 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -332,14 +332,16 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
IEEE80211_QUEUE_STOP_REASON_AGGREGATION);
spin_unlock(&local->ampdu_lock);
- spin_unlock_bh(&sta->lock);
- /* send an addBA request */
+ /* prepare tid data */
sta->ampdu_mlme.dialog_token_allocator++;
sta->ampdu_mlme.tid_tx[tid]->dialog_token =
sta->ampdu_mlme.dialog_token_allocator;
sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
+ spin_unlock_bh(&sta->lock);
+
+ /* send AddBA request */
ieee80211_send_addba_request(sdata, pubsta->addr, tid,
sta->ampdu_mlme.tid_tx[tid]->dialog_token,
sta->ampdu_mlme.tid_tx[tid]->ssn,
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 6e2a7bcd8cb8..5e0b65406c44 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1818,17 +1818,26 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
return RX_CONTINUE;
if (ieee80211_is_back_req(bar->frame_control)) {
+ struct {
+ __le16 control, start_seq_num;
+ } __packed bar_data;
+
if (!rx->sta)
return RX_DROP_MONITOR;
+
+ if (skb_copy_bits(skb, offsetof(struct ieee80211_bar, control),
+ &bar_data, sizeof(bar_data)))
+ return RX_DROP_MONITOR;
+
spin_lock(&rx->sta->lock);
- tid = le16_to_cpu(bar->control) >> 12;
+ tid = le16_to_cpu(bar_data.control) >> 12;
if (!rx->sta->ampdu_mlme.tid_active_rx[tid]) {
spin_unlock(&rx->sta->lock);
return RX_DROP_MONITOR;
}
tid_agg_rx = rx->sta->ampdu_mlme.tid_rx[tid];
- start_seq_num = le16_to_cpu(bar->start_seq_num) >> 4;
+ start_seq_num = le16_to_cpu(bar_data.start_seq_num) >> 4;
/* reset session timer */
if (tid_agg_rx->timeout)
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