AA: ath9k: remove some newer patches until they are fully debugged/fixed

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@37615 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 0 insertions, 640 deletions

diff --git a/package/mac80211/patches/567-ath9k_tid_queue_non_aggr.patch b/package/mac80211/patches/567-ath9k_tid_queue_non_aggr.patch
deleted file mode 100644
index 4835a9c2ed..0000000000
--- a/package/mac80211/patches/567-ath9k_tid_queue_non_aggr.patch
+++ /dev/null
@@ -1,384 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -672,7 +672,7 @@ static void ath_tx_process_buffer(struct
- 	} else
- 		ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok);
- 
--	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) && !flush)
-+	if (!flush)
- 		ath_txq_schedule(sc, txq);
- }
- 
-@@ -848,6 +848,7 @@ static struct ath_buf *
- ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq,
- 			struct ath_atx_tid *tid, struct sk_buff_head **q)
- {
-+	struct ieee80211_tx_info *tx_info;
- 	struct ath_frame_info *fi;
- 	struct sk_buff *skb;
- 	struct ath_buf *bf;
-@@ -874,6 +875,16 @@ ath_tx_get_tid_subframe(struct ath_softc
- 			continue;
- 		}
- 
-+		bf->bf_next = NULL;
-+		bf->bf_lastbf = bf;
-+
-+		tx_info = IEEE80211_SKB_CB(skb);
-+		tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT;
-+		if (!(tx_info->flags & IEEE80211_TX_CTL_AMPDU)) {
-+			bf->bf_state.bf_type = 0;
-+			return bf;
-+		}
-+
- 		bf->bf_state.bf_type = BUF_AMPDU | BUF_AGGR;
- 		seqno = bf->bf_state.seqno;
- 
-@@ -893,58 +904,45 @@ ath_tx_get_tid_subframe(struct ath_softc
- 			continue;
- 		}
- 
--		bf->bf_next = NULL;
--		bf->bf_lastbf = bf;
- 		return bf;
- 	}
- 
- 	return NULL;
- }
- 
--static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
--					     struct ath_txq *txq,
--					     struct ath_atx_tid *tid,
--					     struct list_head *bf_q,
--					     int *aggr_len)
-+static bool
-+ath_tx_form_aggr(struct ath_softc *sc, struct ath_txq *txq,
-+		 struct ath_atx_tid *tid, struct list_head *bf_q,
-+		 struct ath_buf *bf_first, struct sk_buff_head *tid_q,
-+		 int *aggr_len)
- {
- #define PADBYTES(_len) ((4 - ((_len) % 4)) % 4)
--	struct ath_buf *bf, *bf_first = NULL, *bf_prev = NULL;
-+	struct ath_buf *bf = bf_first, *bf_prev = NULL;
- 	int nframes = 0, ndelim;
- 	u16 aggr_limit = 0, al = 0, bpad = 0,
- 	    al_delta, h_baw = tid->baw_size / 2;
--	enum ATH_AGGR_STATUS status = ATH_AGGR_DONE;
- 	struct ieee80211_tx_info *tx_info;
- 	struct ath_frame_info *fi;
- 	struct sk_buff *skb;
--	struct sk_buff_head *tid_q;
-+	bool closed = false;
- 
--	do {
--		bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
--		if (!bf) {
--			status = ATH_AGGR_BAW_CLOSED;
--			break;
--		}
-+	bf = bf_first;
-+	aggr_limit = ath_lookup_rate(sc, bf, tid);
- 
-+	do {
- 		skb = bf->bf_mpdu;
- 		fi = get_frame_info(skb);
- 
--		if (!bf_first) {
--			bf_first = bf;
--			ath_set_rates(tid->an->vif, tid->an->sta, bf);
--			aggr_limit = ath_lookup_rate(sc, bf, tid);
--		}
--
- 		/* do not exceed aggregation limit */
- 		al_delta = ATH_AGGR_DELIM_SZ + fi->framelen;
- 		if (nframes) {
- 			if (aggr_limit < al + bpad + al_delta ||
--			    ath_lookup_legacy(bf) || nframes >= h_baw) {
--				status = ATH_AGGR_LIMITED;
-+			    ath_lookup_legacy(bf) || nframes >= h_baw)
- 				break;
--			}
- 
- 			tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
--			if (tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)
-+			if ((tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) ||
-+			    !(tx_info->flags & IEEE80211_TX_CTL_AMPDU))
- 				break;
- 		}
- 
-@@ -974,11 +972,26 @@ static enum ATH_AGGR_STATUS ath_tx_form_
- 
- 		bf_prev = bf;
- 
-+		bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
-+		if (!bf) {
-+			closed = true;
-+			break;
-+		}
- 	} while (ath_tid_has_buffered(tid));
- 
-+	bf = bf_first;
-+	bf->bf_lastbf = bf_prev;
-+
-+	if (bf == bf_prev) {
-+		al = get_frame_info(bf->bf_mpdu)->framelen;
-+		bf->bf_state.bf_type = BUF_AMPDU;
-+	} else {
-+		TX_STAT_INC(txq->axq_qnum, a_aggr);
-+	}
-+
- 	*aggr_len = al;
- 
--	return status;
-+	return closed;
- #undef PADBYTES
- }
- 
-@@ -1239,14 +1252,45 @@ static void ath_tx_fill_desc(struct ath_
- 	}
- }
- 
-+static void
-+ath_tx_form_burst(struct ath_softc *sc, struct ath_txq *txq,
-+		  struct ath_atx_tid *tid, struct list_head *bf_q,
-+		  struct ath_buf *bf_first, struct sk_buff_head *tid_q)
-+{
-+	struct ath_buf *bf = bf_first, *bf_prev = NULL;
-+	struct sk_buff *skb;
-+	int nframes = 0;
-+
-+	do {
-+		skb = bf->bf_mpdu;
-+
-+		nframes++;
-+		__skb_unlink(skb, tid_q);
-+		list_add_tail(&bf->list, bf_q);
-+		if (bf_prev)
-+			bf_prev->bf_next = bf;
-+		bf_prev = bf;
-+
-+		if (nframes >= 2)
-+			break;
-+
-+		bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
-+		if (!bf)
-+			break;
-+
-+		ath_set_rates(tid->an->vif, tid->an->sta, bf);
-+	} while (1);
-+}
-+
- static void ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
- 			      struct ath_atx_tid *tid)
- {
- 	struct ath_buf *bf;
--	enum ATH_AGGR_STATUS status;
- 	struct ieee80211_tx_info *tx_info;
-+	struct sk_buff_head *tid_q;
- 	struct list_head bf_q;
--	int aggr_len;
-+	int aggr_len = 0;
-+	bool aggr, last = true;
- 
- 	do {
- 		if (!ath_tid_has_buffered(tid))
-@@ -1254,38 +1298,31 @@ static void ath_tx_sched_aggr(struct ath
- 
- 		INIT_LIST_HEAD(&bf_q);
- 
--		status = ath_tx_form_aggr(sc, txq, tid, &bf_q, &aggr_len);
--
--		/*
--		 * no frames picked up to be aggregated;
--		 * block-ack window is not open.
--		 */
--		if (list_empty(&bf_q))
-+		bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
-+		if (!bf)
- 			break;
- 
--		bf = list_first_entry(&bf_q, struct ath_buf, list);
--		bf->bf_lastbf = list_entry(bf_q.prev, struct ath_buf, list);
- 		tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
-+		aggr = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU);
-+		if ((aggr && txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) ||
-+		    (!aggr && txq->axq_depth >= ATH_NON_AGGR_MIN_QDEPTH))
-+			break;
-+
-+		ath_set_rates(tid->an->vif, tid->an->sta, bf);
-+		if (aggr)
-+			last = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf,
-+						tid_q, &aggr_len);
-+		else
-+			ath_tx_form_burst(sc, txq, tid, &bf_q, bf, tid_q);
- 
- 		if (tid->ac->clear_ps_filter) {
- 			tid->ac->clear_ps_filter = false;
- 			tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
--		} else {
--			tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT;
--		}
--
--		/* if only one frame, send as non-aggregate */
--		if (bf == bf->bf_lastbf) {
--			aggr_len = get_frame_info(bf->bf_mpdu)->framelen;
--			bf->bf_state.bf_type = BUF_AMPDU;
--		} else {
--			TX_STAT_INC(txq->axq_qnum, a_aggr);
- 		}
- 
- 		ath_tx_fill_desc(sc, bf, txq, aggr_len);
- 		ath_tx_txqaddbuf(sc, txq, &bf_q, false);
--	} while (txq->axq_ampdu_depth < ATH_AGGR_MIN_QDEPTH &&
--		 status != ATH_AGGR_BAW_CLOSED);
-+	} while (!last);
- }
- 
- int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
-@@ -1844,58 +1881,6 @@ static void ath_tx_txqaddbuf(struct ath_
- 	}
- }
- 
--static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_txq *txq,
--			      struct ath_atx_tid *tid, struct sk_buff *skb,
--			      struct ath_tx_control *txctl)
--{
--	struct ath_frame_info *fi = get_frame_info(skb);
--	struct list_head bf_head;
--	struct ath_buf *bf;
--
--	/*
--	 * Do not queue to h/w when any of the following conditions is true:
--	 * - there are pending frames in software queue
--	 * - the TID is currently paused for ADDBA/BAR request
--	 * - seqno is not within block-ack window
--	 * - h/w queue depth exceeds low water mark
--	 */
--	if ((ath_tid_has_buffered(tid) || tid->paused ||
--	     !BAW_WITHIN(tid->seq_start, tid->baw_size, tid->seq_next) ||
--	     txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) &&
--	    txq != sc->tx.uapsdq) {
--		/*
--		 * Add this frame to software queue for scheduling later
--		 * for aggregation.
--		 */
--		TX_STAT_INC(txq->axq_qnum, a_queued_sw);
--		__skb_queue_tail(&tid->buf_q, skb);
--		if (!txctl->an || !txctl->an->sleeping)
--			ath_tx_queue_tid(txq, tid);
--		return;
--	}
--
--	bf = ath_tx_setup_buffer(sc, txq, tid, skb);
--	if (!bf) {
--		ath_txq_skb_done(sc, txq, skb);
--		ieee80211_free_txskb(sc->hw, skb);
--		return;
--	}
--
--	ath_set_rates(tid->an->vif, tid->an->sta, bf);
--	bf->bf_state.bf_type = BUF_AMPDU;
--	INIT_LIST_HEAD(&bf_head);
--	list_add(&bf->list, &bf_head);
--
--	/* Add sub-frame to BAW */
--	ath_tx_addto_baw(sc, tid, bf);
--
--	/* Queue to h/w without aggregation */
--	TX_STAT_INC(txq->axq_qnum, a_queued_hw);
--	bf->bf_lastbf = bf;
--	ath_tx_fill_desc(sc, bf, txq, fi->framelen);
--	ath_tx_txqaddbuf(sc, txq, &bf_head, false);
--}
--
- static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
- 			       struct ath_atx_tid *tid, struct sk_buff *skb)
- {
-@@ -2121,20 +2106,25 @@ int ath_tx_start(struct ieee80211_hw *hw
- 		ath_txq_unlock(sc, txq);
- 		txq = sc->tx.uapsdq;
- 		ath_txq_lock(sc, txq);
--	}
--
--	if (txctl->an && ieee80211_is_data_qos(hdr->frame_control)) {
-+	} else if (txctl->an &&
-+		   ieee80211_is_data_present(hdr->frame_control)) {
- 		tid = ath_get_skb_tid(sc, txctl->an, skb);
- 
- 		WARN_ON(tid->ac->txq != txctl->txq);
--	}
- 
--	if ((info->flags & IEEE80211_TX_CTL_AMPDU) && tid) {
-+		if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
-+			tid->ac->clear_ps_filter = true;
-+
- 		/*
--		 * Try aggregation if it's a unicast data frame
--		 * and the destination is HT capable.
-+		 * Add this frame to software queue for scheduling later
-+		 * for aggregation.
- 		 */
--		ath_tx_send_ampdu(sc, txq, tid, skb, txctl);
-+		TX_STAT_INC(txq->axq_qnum, a_queued_sw);
-+		__skb_queue_tail(&tid->buf_q, skb);
-+		if (!txctl->an->sleeping)
-+			ath_tx_queue_tid(txq, tid);
-+
-+		ath_txq_schedule(sc, txq);
- 		goto out;
- 	}
- 
-@@ -2397,8 +2387,7 @@ static void ath_tx_processq(struct ath_s
- 
- 		if (list_empty(&txq->axq_q)) {
- 			txq->axq_link = NULL;
--			if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
--				ath_txq_schedule(sc, txq);
-+			ath_txq_schedule(sc, txq);
- 			break;
- 		}
- 		bf = list_first_entry(&txq->axq_q, struct ath_buf, list);
-@@ -2628,6 +2617,7 @@ void ath_tx_node_init(struct ath_softc *
- 	for (acno = 0, ac = &an->ac[acno];
- 	     acno < IEEE80211_NUM_ACS; acno++, ac++) {
- 		ac->sched    = false;
-+		ac->clear_ps_filter = true;
- 		ac->txq = sc->tx.txq_map[acno];
- 		INIT_LIST_HEAD(&ac->tid_q);
- 	}
---- a/drivers/net/wireless/ath/ath9k/ath9k.h
-+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
-@@ -137,6 +137,8 @@ int ath_descdma_setup(struct ath_softc *
- #define ATH_AGGR_ENCRYPTDELIM      10
- /* minimum h/w qdepth to be sustained to maximize aggregation */
- #define ATH_AGGR_MIN_QDEPTH        2
-+/* minimum h/w qdepth for non-aggregated traffic */
-+#define ATH_NON_AGGR_MIN_QDEPTH    8
- 
- #define IEEE80211_SEQ_SEQ_SHIFT    4
- #define IEEE80211_SEQ_MAX          4096
-@@ -173,12 +175,6 @@ int ath_descdma_setup(struct ath_softc *
- 
- #define ATH_TX_COMPLETE_POLL_INT	1000
- 
--enum ATH_AGGR_STATUS {
--	ATH_AGGR_DONE,
--	ATH_AGGR_BAW_CLOSED,
--	ATH_AGGR_LIMITED,
--};
--
- #define ATH_TXFIFO_DEPTH 8
- struct ath_txq {
- 	int mac80211_qnum; /* mac80211 queue number, -1 means not mac80211 Q */
---- a/drivers/net/wireless/ath/ath9k/main.c
-+++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -1403,9 +1403,6 @@ static void ath9k_sta_notify(struct ieee
- 	struct ath_softc *sc = hw->priv;
- 	struct ath_node *an = (struct ath_node *) sta->drv_priv;
- 
--	if (!sta->ht_cap.ht_supported)
--		return;
--
- 	switch (cmd) {
- 	case STA_NOTIFY_SLEEP:
- 		an->sleeping = true;
diff --git a/package/mac80211/patches/568-ath9k_tid_fairness.patch b/package/mac80211/patches/568-ath9k_tid_fairness.patch
deleted file mode 100644
index 6512cf04a0..0000000000
--- a/package/mac80211/patches/568-ath9k_tid_fairness.patch
+++ /dev/null
@@ -1,148 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -1282,8 +1282,8 @@ ath_tx_form_burst(struct ath_softc *sc, 
- 	} while (1);
- }
- 
--static void ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
--			      struct ath_atx_tid *tid)
-+static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
-+			      struct ath_atx_tid *tid, bool *stop)
- {
- 	struct ath_buf *bf;
- 	struct ieee80211_tx_info *tx_info;
-@@ -1292,37 +1292,36 @@ static void ath_tx_sched_aggr(struct ath
- 	int aggr_len = 0;
- 	bool aggr, last = true;
- 
--	do {
--		if (!ath_tid_has_buffered(tid))
--			return;
--
--		INIT_LIST_HEAD(&bf_q);
-+	if (!ath_tid_has_buffered(tid))
-+		return false;
- 
--		bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
--		if (!bf)
--			break;
--
--		tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
--		aggr = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU);
--		if ((aggr && txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) ||
--		    (!aggr && txq->axq_depth >= ATH_NON_AGGR_MIN_QDEPTH))
--			break;
-+	INIT_LIST_HEAD(&bf_q);
- 
--		ath_set_rates(tid->an->vif, tid->an->sta, bf);
--		if (aggr)
--			last = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf,
--						tid_q, &aggr_len);
--		else
--			ath_tx_form_burst(sc, txq, tid, &bf_q, bf, tid_q);
-+	bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
-+	if (!bf)
-+		return false;
-+
-+	tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
-+	aggr = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU);
-+	if ((aggr && txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) ||
-+		(!aggr && txq->axq_depth >= ATH_NON_AGGR_MIN_QDEPTH))
-+		return false;
-+
-+	ath_set_rates(tid->an->vif, tid->an->sta, bf);
-+	if (aggr)
-+		last = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf,
-+					tid_q, &aggr_len);
-+	else
-+		ath_tx_form_burst(sc, txq, tid, &bf_q, bf, tid_q);
- 
--		if (tid->ac->clear_ps_filter) {
--			tid->ac->clear_ps_filter = false;
--			tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
--		}
-+	if (tid->ac->clear_ps_filter) {
-+		tid->ac->clear_ps_filter = false;
-+		tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
-+	}
- 
--		ath_tx_fill_desc(sc, bf, txq, aggr_len);
--		ath_tx_txqaddbuf(sc, txq, &bf_q, false);
--	} while (!last);
-+	ath_tx_fill_desc(sc, bf, txq, aggr_len);
-+	ath_tx_txqaddbuf(sc, txq, &bf_q, false);
-+	return true;
- }
- 
- int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
-@@ -1754,8 +1753,9 @@ void ath_tx_cleanupq(struct ath_softc *s
-  */
- void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
- {
--	struct ath_atx_ac *ac, *ac_tmp, *last_ac;
-+	struct ath_atx_ac *ac, *last_ac;
- 	struct ath_atx_tid *tid, *last_tid;
-+	bool sent = false;
- 
- 	if (test_bit(SC_OP_HW_RESET, &sc->sc_flags) ||
- 	    list_empty(&txq->axq_acq) ||
-@@ -1764,15 +1764,17 @@ void ath_txq_schedule(struct ath_softc *
- 
- 	rcu_read_lock();
- 
--	ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac, list);
- 	last_ac = list_entry(txq->axq_acq.prev, struct ath_atx_ac, list);
-+	while (!list_empty(&txq->axq_acq)) {
-+		bool stop = false;
- 
--	list_for_each_entry_safe(ac, ac_tmp, &txq->axq_acq, list) {
-+		ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac, list);
- 		last_tid = list_entry(ac->tid_q.prev, struct ath_atx_tid, list);
- 		list_del(&ac->list);
- 		ac->sched = false;
- 
- 		while (!list_empty(&ac->tid_q)) {
-+
- 			tid = list_first_entry(&ac->tid_q, struct ath_atx_tid,
- 					       list);
- 			list_del(&tid->list);
-@@ -1781,7 +1783,8 @@ void ath_txq_schedule(struct ath_softc *
- 			if (tid->paused)
- 				continue;
- 
--			ath_tx_sched_aggr(sc, txq, tid);
-+			if (ath_tx_sched_aggr(sc, txq, tid, &stop))
-+				sent = true;
- 
- 			/*
- 			 * add tid to round-robin queue if more frames
-@@ -1790,8 +1793,7 @@ void ath_txq_schedule(struct ath_softc *
- 			if (ath_tid_has_buffered(tid))
- 				ath_tx_queue_tid(txq, tid);
- 
--			if (tid == last_tid ||
--			    txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
-+			if (stop || tid == last_tid)
- 				break;
- 		}
- 
-@@ -1800,9 +1802,17 @@ void ath_txq_schedule(struct ath_softc *
- 			list_add_tail(&ac->list, &txq->axq_acq);
- 		}
- 
--		if (ac == last_ac ||
--		    txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
-+		if (stop)
- 			break;
-+
-+		if (ac == last_ac) {
-+			if (!sent)
-+				break;
-+
-+			sent = false;
-+			last_ac = list_entry(txq->axq_acq.prev,
-+					     struct ath_atx_ac, list);
-+		}
- 	}
- 
- 	rcu_read_unlock();
diff --git a/package/mac80211/patches/569-ath9k_multicast_node.patch b/package/mac80211/patches/569-ath9k_multicast_node.patch
deleted file mode 100644
index 60a543bc08..0000000000
--- a/package/mac80211/patches/569-ath9k_multicast_node.patch
+++ /dev/null
@@ -1,108 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/ath9k.h
-+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
-@@ -265,6 +265,7 @@ struct ath_node {
- 	u8 mpdudensity;
- 
- 	bool sleeping;
-+	bool no_ps_filter;
- 
- #if defined(CPTCFG_MAC80211_DEBUGFS) && defined(CPTCFG_ATH9K_DEBUGFS)
- 	struct dentry *node_stat;
-@@ -364,6 +365,7 @@ void ath9k_release_buffered_frames(struc
- /********/
- 
- struct ath_vif {
-+	struct ath_node mcast_node;
- 	int av_bslot;
- 	bool primary_sta_vif;
- 	__le64 tsf_adjust; /* TSF adjustment for staggered beacons */
---- a/drivers/net/wireless/ath/ath9k/main.c
-+++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -971,6 +971,8 @@ static int ath9k_add_interface(struct ie
- 	struct ath_softc *sc = hw->priv;
- 	struct ath_hw *ah = sc->sc_ah;
- 	struct ath_common *common = ath9k_hw_common(ah);
-+	struct ath_vif *avp = (void *)vif->drv_priv;
-+	struct ath_node *an = &avp->mcast_node;
- 
- 	mutex_lock(&sc->mutex);
- 
-@@ -984,6 +986,12 @@ static int ath9k_add_interface(struct ie
- 	if (ath9k_uses_beacons(vif->type))
- 		ath9k_beacon_assign_slot(sc, vif);
- 
-+	an->sc = sc;
-+	an->sta = NULL;
-+	an->vif = vif;
-+	an->no_ps_filter = true;
-+	ath_tx_node_init(sc, an);
-+
- 	mutex_unlock(&sc->mutex);
- 	return 0;
- }
-@@ -1021,6 +1029,7 @@ static void ath9k_remove_interface(struc
- {
- 	struct ath_softc *sc = hw->priv;
- 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-+	struct ath_vif *avp = (void *)vif->drv_priv;
- 
- 	ath_dbg(common, CONFIG, "Detach Interface\n");
- 
-@@ -1035,6 +1044,8 @@ static void ath9k_remove_interface(struc
- 	ath9k_calculate_summary_state(hw, NULL);
- 	ath9k_ps_restore(sc);
- 
-+	ath_tx_node_cleanup(sc, &avp->mcast_node);
-+
- 	mutex_unlock(&sc->mutex);
- }
- 
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -135,6 +135,9 @@ static struct ath_frame_info *get_frame_
- 
- static void ath_send_bar(struct ath_atx_tid *tid, u16 seqno)
- {
-+	if (!tid->an->sta)
-+		return;
-+
- 	ieee80211_send_bar(tid->an->vif, tid->an->sta->addr, tid->tidno,
- 			   seqno << IEEE80211_SEQ_SEQ_SHIFT);
- }
-@@ -1314,7 +1317,7 @@ static bool ath_tx_sched_aggr(struct ath
- 	else
- 		ath_tx_form_burst(sc, txq, tid, &bf_q, bf, tid_q);
- 
--	if (tid->ac->clear_ps_filter) {
-+	if (tid->ac->clear_ps_filter || tid->an->no_ps_filter) {
- 		tid->ac->clear_ps_filter = false;
- 		tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
- 	}
-@@ -1500,7 +1503,7 @@ void ath9k_release_buffered_frames(struc
- 			sent++;
- 			TX_STAT_INC(txq->axq_qnum, a_queued_hw);
- 
--			if (ath_tid_has_buffered(tid))
-+			if (an->sta && ath_tid_has_buffered(tid))
- 				ieee80211_sta_set_buffered(an->sta, i, false);
- 		}
- 		ath_txq_unlock_complete(sc, tid->ac->txq);
-@@ -2033,6 +2036,7 @@ static int ath_tx_prepare(struct ieee802
- 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- 	struct ieee80211_sta *sta = txctl->sta;
- 	struct ieee80211_vif *vif = info->control.vif;
-+	struct ath_vif *avp;
- 	struct ath_softc *sc = hw->priv;
- 	int frmlen = skb->len + FCS_LEN;
- 	int padpos, padsize;
-@@ -2040,6 +2044,10 @@ static int ath_tx_prepare(struct ieee802
- 	/* NOTE:  sta can be NULL according to net/mac80211.h */
- 	if (sta)
- 		txctl->an = (struct ath_node *)sta->drv_priv;
-+	else if (vif && ieee80211_is_data(hdr->frame_control)) {
-+		avp = (void *)vif->drv_priv;
-+		txctl->an = &avp->mcast_node;
-+	}
- 
- 	if (info->control.hw_key)
- 		frmlen += info->control.hw_key->icv_len;