mac80211: update to wireless-testing 2011-06-22

SVN-Revision: 27275

1 files changed, 3 insertions, 743 deletions

diff --git a/package/mac80211/patches/300-pending_work.patch b/package/mac80211/patches/300-pending_work.patch
index ecce5be..c2dbae5 100644
--- a/package/mac80211/patches/300-pending_work.patch
+++ b/package/mac80211/patches/300-pending_work.patch
@@ -1,694 +1,6 @@
---- a/drivers/net/wireless/ath/ath9k/hw.h
-+++ b/drivers/net/wireless/ath/ath9k/hw.h
-@@ -603,7 +603,6 @@ struct ath_hw_ops {
- 				     int power_off);
- 	void (*rx_enable)(struct ath_hw *ah);
- 	void (*set_desc_link)(void *ds, u32 link);
--	void (*get_desc_link)(void *ds, u32 **link);
- 	bool (*calibrate)(struct ath_hw *ah,
- 			  struct ath9k_channel *chan,
- 			  u8 rxchainmask,
---- a/drivers/net/wireless/ath/ath9k/main.c
-+++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -62,8 +62,6 @@ static bool ath9k_has_pending_frames(str
- 
- 	if (txq->axq_depth || !list_empty(&txq->axq_acq))
- 		pending = true;
--	else if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
--		pending = !list_empty(&txq->txq_fifo_pending);
- 
- 	spin_unlock_bh(&txq->axq_lock);
- 	return pending;
---- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
-@@ -28,11 +28,6 @@ static void ar9002_hw_set_desc_link(void
- 	((struct ath_desc*) ds)->ds_link = ds_link;
- }
- 
--static void ar9002_hw_get_desc_link(void *ds, u32 **ds_link)
--{
--	*ds_link = &((struct ath_desc *)ds)->ds_link;
--}
--
- static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
- {
- 	u32 isr = 0;
-@@ -437,7 +432,6 @@ void ar9002_hw_attach_mac_ops(struct ath
- 
- 	ops->rx_enable = ar9002_hw_rx_enable;
- 	ops->set_desc_link = ar9002_hw_set_desc_link;
--	ops->get_desc_link = ar9002_hw_get_desc_link;
- 	ops->get_isr = ar9002_hw_get_isr;
- 	ops->fill_txdesc = ar9002_hw_fill_txdesc;
- 	ops->proc_txdesc = ar9002_hw_proc_txdesc;
---- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
-@@ -43,13 +43,6 @@ static void ar9003_hw_set_desc_link(void
- 	ads->ctl10 |= ar9003_calc_ptr_chksum(ads);
- }
- 
--static void ar9003_hw_get_desc_link(void *ds, u32 **ds_link)
--{
--	struct ar9003_txc *ads = ds;
--
--	*ds_link = &ads->link;
--}
--
- static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
- {
- 	u32 isr = 0;
-@@ -498,7 +491,6 @@ void ar9003_hw_attach_mac_ops(struct ath
- 
- 	ops->rx_enable = ar9003_hw_rx_enable;
- 	ops->set_desc_link = ar9003_hw_set_desc_link;
--	ops->get_desc_link = ar9003_hw_get_desc_link;
- 	ops->get_isr = ar9003_hw_get_isr;
- 	ops->fill_txdesc = ar9003_hw_fill_txdesc;
- 	ops->proc_txdesc = ar9003_hw_proc_txdesc;
---- a/drivers/net/wireless/ath/ath9k/ath9k.h
-+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
-@@ -179,7 +179,7 @@ enum ATH_AGGR_STATUS {
- struct ath_txq {
- 	int mac80211_qnum; /* mac80211 queue number, -1 means not mac80211 Q */
- 	u32 axq_qnum; /* ath9k hardware queue number */
--	u32 *axq_link;
-+	void *axq_link;
- 	struct list_head axq_q;
- 	spinlock_t axq_lock;
- 	u32 axq_depth;
-@@ -188,7 +188,6 @@ struct ath_txq {
- 	bool axq_tx_inprogress;
- 	struct list_head axq_acq;
- 	struct list_head txq_fifo[ATH_TXFIFO_DEPTH];
--	struct list_head txq_fifo_pending;
- 	u8 txq_headidx;
- 	u8 txq_tailidx;
- 	int pending_frames;
---- a/drivers/net/wireless/ath/ath9k/debug.c
-+++ b/drivers/net/wireless/ath/ath9k/debug.c
-@@ -550,6 +550,7 @@ static ssize_t read_file_xmit(struct fil
- 
- 	PR("MPDUs Queued:    ", queued);
- 	PR("MPDUs Completed: ", completed);
-+	PR("MPDUs XRetried:  ", xretries);
- 	PR("Aggregates:      ", a_aggr);
- 	PR("AMPDUs Queued HW:", a_queued_hw);
- 	PR("AMPDUs Queued SW:", a_queued_sw);
-@@ -587,7 +588,6 @@ static ssize_t read_file_xmit(struct fil
- 
- 	PRQLE("axq_q empty:       ", axq_q);
- 	PRQLE("axq_acq empty:     ", axq_acq);
--	PRQLE("txq_fifo_pending:  ", txq_fifo_pending);
- 	for (i = 0; i < ATH_TXFIFO_DEPTH; i++) {
- 		snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i);
- 		PRQLE(tmp, txq_fifo[i]);
-@@ -807,7 +807,10 @@ void ath_debug_stat_tx(struct ath_softc
- 		else
- 			TX_STAT_INC(qnum, a_completed);
- 	} else {
--		TX_STAT_INC(qnum, completed);
-+		if (bf_isxretried(bf))
-+			TX_STAT_INC(qnum, xretries);
-+		else
-+			TX_STAT_INC(qnum, completed);
- 	}
- 
- 	if (ts->ts_status & ATH9K_TXERR_FIFO)
---- a/drivers/net/wireless/ath/ath9k/hw-ops.h
-+++ b/drivers/net/wireless/ath/ath9k/hw-ops.h
-@@ -39,11 +39,6 @@ static inline void ath9k_hw_set_desc_lin
- 	ath9k_hw_ops(ah)->set_desc_link(ds, link);
- }
- 
--static inline void ath9k_hw_get_desc_link(struct ath_hw *ah, void *ds,
--					  u32 **link)
--{
--	ath9k_hw_ops(ah)->get_desc_link(ds, link);
--}
- static inline bool ath9k_hw_calibrate(struct ath_hw *ah,
- 				      struct ath9k_channel *chan,
- 				      u8 rxchainmask,
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -53,7 +53,7 @@ static void ath_tx_complete_buf(struct a
- 				struct ath_txq *txq, struct list_head *bf_q,
- 				struct ath_tx_status *ts, int txok, int sendbar);
- static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
--			     struct list_head *head);
-+			     struct list_head *head, bool internal);
- static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len);
- static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
- 			     struct ath_tx_status *ts, int nframes, int nbad,
-@@ -377,8 +377,7 @@ static void ath_tx_complete_aggr(struct
- 			bf_next = bf->bf_next;
- 
- 			bf->bf_state.bf_type |= BUF_XRETRY;
--			if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) ||
--			    !bf->bf_stale || bf_next != NULL)
-+			if (!bf->bf_stale || bf_next != NULL)
- 				list_move_tail(&bf->list, &bf_head);
- 
- 			ath_tx_rc_status(sc, bf, ts, 1, 1, 0, false);
-@@ -463,20 +462,14 @@ static void ath_tx_complete_aggr(struct
- 			}
- 		}
- 
--		if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
--		    bf_next == NULL) {
--			/*
--			 * Make sure the last desc is reclaimed if it
--			 * not a holding desc.
--			 */
--			if (!bf_last->bf_stale)
--				list_move_tail(&bf->list, &bf_head);
--			else
--				INIT_LIST_HEAD(&bf_head);
--		} else {
--			BUG_ON(list_empty(bf_q));
-+		/*
-+		 * Make sure the last desc is reclaimed if it
-+		 * not a holding desc.
-+		 */
-+		if (!bf_last->bf_stale || bf_next != NULL)
- 			list_move_tail(&bf->list, &bf_head);
--		}
-+		else
-+			INIT_LIST_HEAD(&bf_head);
- 
- 		if (!txpending || (tid->state & AGGR_CLEANUP)) {
- 			/*
-@@ -837,7 +830,7 @@ static void ath_tx_sched_aggr(struct ath
- 			bf->bf_state.bf_type &= ~BUF_AGGR;
- 			ath9k_hw_clr11n_aggr(sc->sc_ah, bf->bf_desc);
- 			ath_buf_set_rate(sc, bf, fi->framelen);
--			ath_tx_txqaddbuf(sc, txq, &bf_q);
-+			ath_tx_txqaddbuf(sc, txq, &bf_q, false);
- 			continue;
- 		}
- 
-@@ -849,7 +842,7 @@ static void ath_tx_sched_aggr(struct ath
- 		/* anchor last desc of aggregate */
- 		ath9k_hw_set11n_aggr_last(sc->sc_ah, bf->bf_lastbf->bf_desc);
- 
--		ath_tx_txqaddbuf(sc, txq, &bf_q);
-+		ath_tx_txqaddbuf(sc, txq, &bf_q, false);
- 		TX_STAT_INC(txq->axq_qnum, a_aggr);
- 
- 	} while (txq->axq_ampdu_depth < ATH_AGGR_MIN_QDEPTH &&
-@@ -1085,7 +1078,6 @@ struct ath_txq *ath_txq_setup(struct ath
- 		txq->txq_headidx = txq->txq_tailidx = 0;
- 		for (i = 0; i < ATH_TXFIFO_DEPTH; i++)
- 			INIT_LIST_HEAD(&txq->txq_fifo[i]);
--		INIT_LIST_HEAD(&txq->txq_fifo_pending);
- 	}
- 	return &sc->tx.txq[axq_qnum];
- }
-@@ -1155,13 +1147,8 @@ static bool bf_is_ampdu_not_probing(stru
-     return bf_isampdu(bf) && !(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE);
- }
- 
--/*
-- * Drain a given TX queue (could be Beacon or Data)
-- *
-- * This assumes output has been stopped and
-- * we do not need to block ath_tx_tasklet.
-- */
--void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
-+static void ath_drain_txq_list(struct ath_softc *sc, struct ath_txq *txq,
-+			       struct list_head *list, bool retry_tx)
- {
- 	struct ath_buf *bf, *lastbf;
- 	struct list_head bf_head;
-@@ -1170,93 +1157,63 @@ void ath_draintxq(struct ath_softc *sc,
- 	memset(&ts, 0, sizeof(ts));
- 	INIT_LIST_HEAD(&bf_head);
- 
--	for (;;) {
--		spin_lock_bh(&txq->axq_lock);
-+	while (!list_empty(list)) {
-+		bf = list_first_entry(list, struct ath_buf, list);
- 
--		if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
--			if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
--				txq->txq_headidx = txq->txq_tailidx = 0;
--				spin_unlock_bh(&txq->axq_lock);
--				break;
--			} else {
--				bf = list_first_entry(&txq->txq_fifo[txq->txq_tailidx],
--						      struct ath_buf, list);
--			}
--		} else {
--			if (list_empty(&txq->axq_q)) {
--				txq->axq_link = NULL;
--				spin_unlock_bh(&txq->axq_lock);
--				break;
--			}
--			bf = list_first_entry(&txq->axq_q, struct ath_buf,
--					      list);
--
--			if (bf->bf_stale) {
--				list_del(&bf->list);
--				spin_unlock_bh(&txq->axq_lock);
-+		if (bf->bf_stale) {
-+			list_del(&bf->list);
- 
--				ath_tx_return_buffer(sc, bf);
--				continue;
--			}
-+			ath_tx_return_buffer(sc, bf);
-+			continue;
- 		}
- 
- 		lastbf = bf->bf_lastbf;
--
--		if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
--			list_cut_position(&bf_head,
--					  &txq->txq_fifo[txq->txq_tailidx],
--					  &lastbf->list);
--			INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
--		} else {
--			/* remove ath_buf's of the same mpdu from txq */
--			list_cut_position(&bf_head, &txq->axq_q, &lastbf->list);
--		}
-+		list_cut_position(&bf_head, list, &lastbf->list);
- 
- 		txq->axq_depth--;
- 		if (bf_is_ampdu_not_probing(bf))
- 			txq->axq_ampdu_depth--;
--		spin_unlock_bh(&txq->axq_lock);
- 
-+		spin_unlock_bh(&txq->axq_lock);
- 		if (bf_isampdu(bf))
- 			ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0,
- 					     retry_tx);
- 		else
- 			ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
-+		spin_lock_bh(&txq->axq_lock);
- 	}
-+}
- 
-+/*
-+ * Drain a given TX queue (could be Beacon or Data)
-+ *
-+ * This assumes output has been stopped and
-+ * we do not need to block ath_tx_tasklet.
-+ */
-+void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
-+{
- 	spin_lock_bh(&txq->axq_lock);
--	txq->axq_tx_inprogress = false;
--	spin_unlock_bh(&txq->axq_lock);
--
- 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
--		spin_lock_bh(&txq->axq_lock);
--		while (!list_empty(&txq->txq_fifo_pending)) {
--			bf = list_first_entry(&txq->txq_fifo_pending,
--					      struct ath_buf, list);
--			list_cut_position(&bf_head,
--					  &txq->txq_fifo_pending,
--					  &bf->bf_lastbf->list);
--			spin_unlock_bh(&txq->axq_lock);
-+		int idx = txq->txq_tailidx;
- 
--			if (bf_isampdu(bf))
--				ath_tx_complete_aggr(sc, txq, bf, &bf_head,
--						     &ts, 0, retry_tx);
--			else
--				ath_tx_complete_buf(sc, bf, txq, &bf_head,
--						    &ts, 0, 0);
--			spin_lock_bh(&txq->axq_lock);
-+		while (!list_empty(&txq->txq_fifo[idx])) {
-+			ath_drain_txq_list(sc, txq, &txq->txq_fifo[idx],
-+					   retry_tx);
-+
-+			INCR(idx, ATH_TXFIFO_DEPTH);
- 		}
--		spin_unlock_bh(&txq->axq_lock);
-+		txq->txq_tailidx = idx;
- 	}
- 
-+	txq->axq_link = NULL;
-+	txq->axq_tx_inprogress = false;
-+	ath_drain_txq_list(sc, txq, &txq->axq_q, retry_tx);
-+
- 	/* flush any pending frames if aggregation is enabled */
--	if (sc->sc_flags & SC_OP_TXAGGR) {
--		if (!retry_tx) {
--			spin_lock_bh(&txq->axq_lock);
--			ath_txq_drain_pending_buffers(sc, txq);
--			spin_unlock_bh(&txq->axq_lock);
--		}
--	}
-+	if ((sc->sc_flags & SC_OP_TXAGGR) && !retry_tx)
-+		ath_txq_drain_pending_buffers(sc, txq);
-+
-+	spin_unlock_bh(&txq->axq_lock);
- }
- 
- bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx)
-@@ -1370,11 +1327,13 @@ void ath_txq_schedule(struct ath_softc *
-  * assume the descriptors are already chained together by caller.
-  */
- static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
--			     struct list_head *head)
-+			     struct list_head *head, bool internal)
- {
- 	struct ath_hw *ah = sc->sc_ah;
- 	struct ath_common *common = ath9k_hw_common(ah);
--	struct ath_buf *bf;
-+	struct ath_buf *bf, *bf_last;
-+	bool puttxbuf = false;
-+	bool edma;
- 
- 	/*
- 	 * Insert the frame on the outbound list and
-@@ -1384,51 +1343,49 @@ static void ath_tx_txqaddbuf(struct ath_
- 	if (list_empty(head))
- 		return;
- 
-+	edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
- 	bf = list_first_entry(head, struct ath_buf, list);
-+	bf_last = list_entry(head->prev, struct ath_buf, list);
- 
- 	ath_dbg(common, ATH_DBG_QUEUE,
- 		"qnum: %d, txq depth: %d\n", txq->axq_qnum, txq->axq_depth);
- 
--	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
--		if (txq->axq_depth >= ATH_TXFIFO_DEPTH) {
--			list_splice_tail_init(head, &txq->txq_fifo_pending);
--			return;
--		}
--		if (!list_empty(&txq->txq_fifo[txq->txq_headidx]))
--			ath_dbg(common, ATH_DBG_XMIT,
--				"Initializing tx fifo %d which is non-empty\n",
--				txq->txq_headidx);
--		INIT_LIST_HEAD(&txq->txq_fifo[txq->txq_headidx]);
--		list_splice_init(head, &txq->txq_fifo[txq->txq_headidx]);
-+	if (edma && list_empty(&txq->txq_fifo[txq->txq_headidx])) {
-+		list_splice_tail_init(head, &txq->txq_fifo[txq->txq_headidx]);
- 		INCR(txq->txq_headidx, ATH_TXFIFO_DEPTH);
--		TX_STAT_INC(txq->axq_qnum, puttxbuf);
--		ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
--		ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
--			txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
-+		puttxbuf = true;
- 	} else {
- 		list_splice_tail_init(head, &txq->axq_q);
- 
--		if (txq->axq_link == NULL) {
--			TX_STAT_INC(txq->axq_qnum, puttxbuf);
--			ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
--			ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
--				txq->axq_qnum, ito64(bf->bf_daddr),
--				bf->bf_desc);
--		} else {
--			*txq->axq_link = bf->bf_daddr;
-+		if (txq->axq_link) {
-+			ath9k_hw_set_desc_link(ah, txq->axq_link, bf->bf_daddr);
- 			ath_dbg(common, ATH_DBG_XMIT,
- 				"link[%u] (%p)=%llx (%p)\n",
- 				txq->axq_qnum, txq->axq_link,
- 				ito64(bf->bf_daddr), bf->bf_desc);
--		}
--		ath9k_hw_get_desc_link(ah, bf->bf_lastbf->bf_desc,
--				       &txq->axq_link);
-+		} else if (!edma)
-+			puttxbuf = true;
-+
-+		txq->axq_link = bf_last->bf_desc;
-+	}
-+
-+	if (puttxbuf) {
-+		TX_STAT_INC(txq->axq_qnum, puttxbuf);
-+		ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
-+		ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
-+			txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
-+	}
-+
-+	if (!edma) {
- 		TX_STAT_INC(txq->axq_qnum, txstart);
- 		ath9k_hw_txstart(ah, txq->axq_qnum);
- 	}
--	txq->axq_depth++;
--	if (bf_is_ampdu_not_probing(bf))
--		txq->axq_ampdu_depth++;
-+
-+	if (!internal) {
-+		txq->axq_depth++;
-+		if (bf_is_ampdu_not_probing(bf))
-+			txq->axq_ampdu_depth++;
-+	}
- }
- 
- static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
-@@ -1470,7 +1427,7 @@ static void ath_tx_send_ampdu(struct ath
- 	TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw);
- 	bf->bf_lastbf = bf;
- 	ath_buf_set_rate(sc, bf, fi->framelen);
--	ath_tx_txqaddbuf(sc, txctl->txq, &bf_head);
-+	ath_tx_txqaddbuf(sc, txctl->txq, &bf_head, false);
- }
- 
- static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
-@@ -1490,7 +1447,7 @@ static void ath_tx_send_normal(struct at
- 	bf->bf_lastbf = bf;
- 	fi = get_frame_info(bf->bf_mpdu);
- 	ath_buf_set_rate(sc, bf, fi->framelen);
--	ath_tx_txqaddbuf(sc, txq, bf_head);
-+	ath_tx_txqaddbuf(sc, txq, bf_head, false);
- 	TX_STAT_INC(txq->axq_qnum, queued);
- }
- 
-@@ -2077,6 +2034,38 @@ static void ath_tx_rc_status(struct ath_
- 	tx_info->status.rates[tx_rateindex].count = ts->ts_longretry + 1;
- }
- 
-+static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
-+				  struct ath_tx_status *ts, struct ath_buf *bf,
-+				  struct list_head *bf_head)
-+{
-+	int txok;
-+
-+	txq->axq_depth--;
-+	txok = !(ts->ts_status & ATH9K_TXERR_MASK);
-+	txq->axq_tx_inprogress = false;
-+	if (bf_is_ampdu_not_probing(bf))
-+		txq->axq_ampdu_depth--;
-+
-+	spin_unlock_bh(&txq->axq_lock);
-+
-+	if (!bf_isampdu(bf)) {
-+		/*
-+		 * This frame is sent out as a single frame.
-+		 * Use hardware retry status for this frame.
-+		 */
-+		if (ts->ts_status & ATH9K_TXERR_XRETRY)
-+			bf->bf_state.bf_type |= BUF_XRETRY;
-+		ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok, true);
-+		ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok, 0);
-+	} else
-+		ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok, true);
-+
-+	spin_lock_bh(&txq->axq_lock);
-+
-+	if (sc->sc_flags & SC_OP_TXAGGR)
-+		ath_txq_schedule(sc, txq);
-+}
-+
- static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
- {
- 	struct ath_hw *ah = sc->sc_ah;
-@@ -2085,20 +2074,18 @@ static void ath_tx_processq(struct ath_s
- 	struct list_head bf_head;
- 	struct ath_desc *ds;
- 	struct ath_tx_status ts;
--	int txok;
- 	int status;
- 
- 	ath_dbg(common, ATH_DBG_QUEUE, "tx queue %d (%x), link %p\n",
- 		txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum),
- 		txq->axq_link);
- 
-+	spin_lock_bh(&txq->axq_lock);
- 	for (;;) {
--		spin_lock_bh(&txq->axq_lock);
- 		if (list_empty(&txq->axq_q)) {
- 			txq->axq_link = NULL;
- 			if (sc->sc_flags & SC_OP_TXAGGR)
- 				ath_txq_schedule(sc, txq);
--			spin_unlock_bh(&txq->axq_lock);
- 			break;
- 		}
- 		bf = list_first_entry(&txq->axq_q, struct ath_buf, list);
-@@ -2114,13 +2101,11 @@ static void ath_tx_processq(struct ath_s
- 		bf_held = NULL;
- 		if (bf->bf_stale) {
- 			bf_held = bf;
--			if (list_is_last(&bf_held->list, &txq->axq_q)) {
--				spin_unlock_bh(&txq->axq_lock);
-+			if (list_is_last(&bf_held->list, &txq->axq_q))
- 				break;
--			} else {
--				bf = list_entry(bf_held->list.next,
--						struct ath_buf, list);
--			}
-+
-+			bf = list_entry(bf_held->list.next, struct ath_buf,
-+					list);
- 		}
- 
- 		lastbf = bf->bf_lastbf;
-@@ -2128,10 +2113,9 @@ static void ath_tx_processq(struct ath_s
- 
- 		memset(&ts, 0, sizeof(ts));
- 		status = ath9k_hw_txprocdesc(ah, ds, &ts);
--		if (status == -EINPROGRESS) {
--			spin_unlock_bh(&txq->axq_lock);
-+		if (status == -EINPROGRESS)
- 			break;
--		}
-+
- 		TX_STAT_INC(txq->axq_qnum, txprocdesc);
- 
- 		/*
-@@ -2145,42 +2129,14 @@ static void ath_tx_processq(struct ath_s
- 			list_cut_position(&bf_head,
- 				&txq->axq_q, lastbf->list.prev);
- 
--		txq->axq_depth--;
--		txok = !(ts.ts_status & ATH9K_TXERR_MASK);
--		txq->axq_tx_inprogress = false;
--		if (bf_held)
-+		if (bf_held) {
- 			list_del(&bf_held->list);
--
--		if (bf_is_ampdu_not_probing(bf))
--			txq->axq_ampdu_depth--;
--
--		spin_unlock_bh(&txq->axq_lock);
--
--		if (bf_held)
- 			ath_tx_return_buffer(sc, bf_held);
--
--		if (!bf_isampdu(bf)) {
--			/*
--			 * This frame is sent out as a single frame.
--			 * Use hardware retry status for this frame.
--			 */
--			if (ts.ts_status & ATH9K_TXERR_XRETRY)
--				bf->bf_state.bf_type |= BUF_XRETRY;
--			ath_tx_rc_status(sc, bf, &ts, 1, txok ? 0 : 1, txok, true);
- 		}
- 
--		if (bf_isampdu(bf))
--			ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, txok,
--					     true);
--		else
--			ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, txok, 0);
--
--		spin_lock_bh(&txq->axq_lock);
--
--		if (sc->sc_flags & SC_OP_TXAGGR)
--			ath_txq_schedule(sc, txq);
--		spin_unlock_bh(&txq->axq_lock);
-+		ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head);
- 	}
-+	spin_unlock_bh(&txq->axq_lock);
- }
- 
- static void ath_tx_complete_poll_work(struct work_struct *work)
-@@ -2237,17 +2193,16 @@ void ath_tx_tasklet(struct ath_softc *sc
- 
- void ath_tx_edma_tasklet(struct ath_softc *sc)
- {
--	struct ath_tx_status txs;
-+	struct ath_tx_status ts;
- 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- 	struct ath_hw *ah = sc->sc_ah;
- 	struct ath_txq *txq;
- 	struct ath_buf *bf, *lastbf;
- 	struct list_head bf_head;
- 	int status;
--	int txok;
- 
- 	for (;;) {
--		status = ath9k_hw_txprocdesc(ah, NULL, (void *)&txs);
-+		status = ath9k_hw_txprocdesc(ah, NULL, (void *)&ts);
- 		if (status == -EINPROGRESS)
- 			break;
- 		if (status == -EIO) {
-@@ -2257,12 +2212,13 @@ void ath_tx_edma_tasklet(struct ath_soft
- 		}
- 
- 		/* Skip beacon completions */
--		if (txs.qid == sc->beacon.beaconq)
-+		if (ts.qid == sc->beacon.beaconq)
- 			continue;
- 
--		txq = &sc->tx.txq[txs.qid];
-+		txq = &sc->tx.txq[ts.qid];
- 
- 		spin_lock_bh(&txq->axq_lock);
-+
- 		if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
- 			spin_unlock_bh(&txq->axq_lock);
- 			return;
-@@ -2275,41 +2231,21 @@ void ath_tx_edma_tasklet(struct ath_soft
- 		INIT_LIST_HEAD(&bf_head);
- 		list_cut_position(&bf_head, &txq->txq_fifo[txq->txq_tailidx],
- 				  &lastbf->list);
--		INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
--		txq->axq_depth--;
--		txq->axq_tx_inprogress = false;
--		if (bf_is_ampdu_not_probing(bf))
--			txq->axq_ampdu_depth--;
--		spin_unlock_bh(&txq->axq_lock);
- 
--		txok = !(txs.ts_status & ATH9K_TXERR_MASK);
--
--		if (!bf_isampdu(bf)) {
--			if (txs.ts_status & ATH9K_TXERR_XRETRY)
--				bf->bf_state.bf_type |= BUF_XRETRY;
--			ath_tx_rc_status(sc, bf, &txs, 1, txok ? 0 : 1, txok, true);
--		}
--
--		if (bf_isampdu(bf))
--			ath_tx_complete_aggr(sc, txq, bf, &bf_head, &txs,
--					     txok, true);
--		else
--			ath_tx_complete_buf(sc, bf, txq, &bf_head,
--					    &txs, txok, 0);
-+		if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
-+			INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
- 
--		spin_lock_bh(&txq->axq_lock);
-+			if (!list_empty(&txq->axq_q)) {
-+				struct list_head bf_q;
- 
--		if (!list_empty(&txq->txq_fifo_pending)) {
--			INIT_LIST_HEAD(&bf_head);
--			bf = list_first_entry(&txq->txq_fifo_pending,
--					      struct ath_buf, list);
--			list_cut_position(&bf_head,
--					  &txq->txq_fifo_pending,
--					  &bf->bf_lastbf->list);
--			ath_tx_txqaddbuf(sc, txq, &bf_head);
--		} else if (sc->sc_flags & SC_OP_TXAGGR)
--			ath_txq_schedule(sc, txq);
-+				INIT_LIST_HEAD(&bf_q);
-+				txq->axq_link = NULL;
-+				list_splice_tail_init(&txq->axq_q, &bf_q);
-+				ath_tx_txqaddbuf(sc, txq, &bf_q, true);
-+			}
-+		}
- 
-+		ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head);
- 		spin_unlock_bh(&txq->axq_lock);
- 	}
- }
 --- a/net/mac80211/agg-rx.c
 +++ b/net/mac80211/agg-rx.c
-@@ -161,6 +161,8 @@ static void ieee80211_send_addba_resp(st
+@@ -176,6 +176,8 @@ static void ieee80211_send_addba_resp(st
  		memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
  	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
  		memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
@@ -709,7 +21,7 @@
  		memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
  	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
  		memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
-@@ -388,7 +389,8 @@ int ieee80211_start_tx_ba_session(struct
+@@ -398,7 +399,8 @@ int ieee80211_start_tx_ba_session(struct
  	 */
  	if (sdata->vif.type != NL80211_IFTYPE_STATION &&
  	    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
@@ -857,7 +169,7 @@
  static void ieee80211_iface_work(struct work_struct *work)
  {
  	struct ieee80211_sub_if_data *sdata =
-@@ -822,6 +863,9 @@ static void ieee80211_iface_work(struct
+@@ -822,6 +863,9 @@ static void ieee80211_iface_work(struct 
  				break;
  			ieee80211_mesh_rx_queued_mgmt(sdata, skb);
  			break;
@@ -933,55 +245,3 @@
  	WLAN_STA_CLEAR_PS_FILT	= 1<<9,
  	WLAN_STA_MFP		= 1<<10,
  	WLAN_STA_BLOCK_BA	= 1<<11,
---- a/drivers/net/wireless/ath/ath9k/debug.h
-+++ b/drivers/net/wireless/ath/ath9k/debug.h
-@@ -116,6 +116,7 @@ struct ath_tx_stats {
- 	u32 tx_bytes_all;
- 	u32 queued;
- 	u32 completed;
-+	u32 xretries;
- 	u32 a_aggr;
- 	u32 a_queued_hw;
- 	u32 a_queued_sw;
---- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
-@@ -4645,10 +4645,16 @@ static void ar9003_hw_set_power_per_rate
- 	case 1:
- 		break;
- 	case 2:
--		scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
-+		if (scaledPower > REDUCE_SCALED_POWER_BY_TWO_CHAIN)
-+			scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
-+		else
-+			scaledPower = 0;
- 		break;
- 	case 3:
--		scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
-+		if (scaledPower > REDUCE_SCALED_POWER_BY_THREE_CHAIN)
-+			scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
-+		else
-+			scaledPower = 0;
- 		break;
- 	}
- 
---- a/drivers/net/wireless/ath/ath9k/eeprom_9287.c
-+++ b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
-@@ -524,10 +524,16 @@ static void ath9k_hw_set_ar9287_power_pe
- 	case 1:
- 		break;
- 	case 2:
--		scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
-+		if (scaledPower > REDUCE_SCALED_POWER_BY_TWO_CHAIN)
-+			scaledPower -= REDUCE_SCALED_POWER_BY_TWO_CHAIN;
-+		else
-+			scaledPower = 0;
- 		break;
- 	case 3:
--		scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
-+		if (scaledPower > REDUCE_SCALED_POWER_BY_THREE_CHAIN)
-+			scaledPower -= REDUCE_SCALED_POWER_BY_THREE_CHAIN;
-+		else
-+			scaledPower = 0;
- 		break;
- 	}
- 	scaledPower = max((u16)0, scaledPower);