From 53f249747d5ec6434415a6895b5690bf4f1d5d7d Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 29 Aug 2016 23:25:19 +0300 Subject: [PATCH] mac80211: send delBA on unexpected BlockAck Request 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 --- net/mac80211/rx.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index ad636c930f84..e796060b7c5e 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -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; -- 2.20.1