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mac80211: send delBA on unexpected BlockAck Request

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If we don't have a BA session, send delBA, as requested by the
IEEE 802.11 spec. Apply the same limit of sending such a delBA
only once as in the previous patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2016-08-29 23:25:19 +03:00
parent bfe40fa395
commit 53f249747d
1 changed files with 6 additions and 0 deletions
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6
net/mac80211/rx.c
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@ -2592,6 +2592,12 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
tid = le16_to_cpu(bar_data.control) >> 12;
if (!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);
tid_agg_rx = rcu_dereference(rx->sta->ampdu_mlme.tid_rx[tid]);
if (!tid_agg_rx)
return RX_DROP_MONITOR;