mac80211: add a few tx related fixes

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25054 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 222 insertions, 0 deletions

diff --git a/package/mac80211/patches/310-ath9k_pending_work.patch b/package/mac80211/patches/310-ath9k_pending_work.patch
new file mode 100644
index 0000000000..0a3372c467
--- /dev/null
+++ b/package/mac80211/patches/310-ath9k_pending_work.patch
@@ -0,0 +1,90 @@
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1221,49 +1221,59 @@ void ath_tx_cleanupq(struct ath_softc *s
+ 	sc->tx.txqsetup &= ~(1<<txq->axq_qnum);
+ }
+ 
++/* For each axq_acq entry, for each tid, try to schedule packets
++ * for transmit until ampdu_depth has reached min Q depth.
++ */
+ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
+ {
+-	struct ath_atx_ac *ac;
+-	struct ath_atx_tid *tid, *last;
++	struct ath_atx_ac *ac, *ac_tmp, *last_ac;
++	struct ath_atx_tid *tid, *last_tid;
+ 
+ 	if (list_empty(&txq->axq_acq) ||
+ 	    txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
+ 		return;
+ 
+ 	ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac, list);
+-	last = list_entry(ac->tid_q.prev, struct ath_atx_tid, list);
+-	list_del(&ac->list);
+-	ac->sched = false;
++	last_ac = list_entry(txq->axq_acq.prev, struct ath_atx_ac, list);
+ 
+-	do {
+-		if (list_empty(&ac->tid_q))
+-			return;
+-
+-		tid = list_first_entry(&ac->tid_q, struct ath_atx_tid, list);
+-		list_del(&tid->list);
+-		tid->sched = false;
++	list_for_each_entry_safe(ac, ac_tmp, &txq->axq_acq, 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);
++			tid->sched = false;
+ 
+-		if (tid->paused)
+-			continue;
++			if (tid->paused)
++				continue;
+ 
+-		ath_tx_sched_aggr(sc, txq, tid);
++			ath_tx_sched_aggr(sc, txq, tid);
+ 
+-		/*
+-		 * add tid to round-robin queue if more frames
+-		 * are pending for the tid
+-		 */
+-		if (!list_empty(&tid->buf_q))
+-			ath_tx_queue_tid(txq, tid);
++			/*
++			 * add tid to round-robin queue if more frames
++			 * are pending for the tid
++			 */
++			if (!list_empty(&tid->buf_q))
++				ath_tx_queue_tid(txq, tid);
+ 
+-		if (tid == last || txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
+-			break;
+-	} while (!list_empty(&ac->tid_q));
++			if (tid == last_tid ||
++			    txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
++				break;
++		}
+ 
+-	if (!list_empty(&ac->tid_q)) {
+-		if (!ac->sched) {
+-			ac->sched = true;
+-			list_add_tail(&ac->list, &txq->axq_acq);
++		if (!list_empty(&ac->tid_q)) {
++			if (!ac->sched) {
++				ac->sched = true;
++				list_add_tail(&ac->list, &txq->axq_acq);
++			}
+ 		}
++
++		if (ac == last_ac ||
++		    txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
++			return;
+ 	}
+ }
+ 
diff --git a/package/mac80211/patches/530-ath9k_cleanup_queue_wake.patch b/package/mac80211/patches/530-ath9k_cleanup_queue_wake.patch
new file mode 100644
index 0000000000..0d9511f095
--- /dev/null
+++ b/package/mac80211/patches/530-ath9k_cleanup_queue_wake.patch
@@ -0,0 +1,118 @@
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1208,8 +1208,17 @@ bool ath_drain_all_txq(struct ath_softc 
+ 		ath_err(common, "Failed to stop TX DMA!\n");
+ 
+ 	for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
+-		if (ATH_TXQ_SETUP(sc, i))
+-			ath_draintxq(sc, &sc->tx.txq[i], retry_tx);
++		if (!ATH_TXQ_SETUP(sc, i))
++			continue;
++
++		/*
++		 * The caller will resume queues with ieee80211_wake_queues.
++		 * Mark the queue as not stopped to prevent ath_tx_complete
++		 * from waking the queue too early.
++		 */
++		txq = &sc->tx.txq[i];
++		txq->stopped = false;
++		ath_draintxq(sc, txq, retry_tx);
+ 	}
+ 
+ 	return !npend;
+@@ -1873,6 +1882,11 @@ static void ath_tx_complete(struct ath_s
+ 			spin_lock_bh(&txq->axq_lock);
+ 			if (WARN_ON(--txq->pending_frames < 0))
+ 				txq->pending_frames = 0;
++
++			if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
++				if (ath_mac80211_start_queue(sc, q))
++					txq->stopped = 0;
++			}
+ 			spin_unlock_bh(&txq->axq_lock);
+ 		}
+ 
+@@ -1982,19 +1996,6 @@ static void ath_tx_rc_status(struct ath_
+ 	tx_info->status.rates[tx_rateindex].count = ts->ts_longretry + 1;
+ }
+ 
+-static void ath_wake_mac80211_queue(struct ath_softc *sc, int qnum)
+-{
+-	struct ath_txq *txq;
+-
+-	txq = sc->tx.txq_map[qnum];
+-	spin_lock_bh(&txq->axq_lock);
+-	if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
+-		if (ath_mac80211_start_queue(sc, qnum))
+-			txq->stopped = 0;
+-	}
+-	spin_unlock_bh(&txq->axq_lock);
+-}
+-
+ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
+ {
+ 	struct ath_hw *ah = sc->sc_ah;
+@@ -2005,7 +2006,6 @@ static void ath_tx_processq(struct ath_s
+ 	struct ath_tx_status ts;
+ 	int txok;
+ 	int status;
+-	int qnum;
+ 
+ 	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),
+@@ -2084,17 +2084,12 @@ static void ath_tx_processq(struct ath_s
+ 			ath_tx_rc_status(bf, &ts, 1, txok ? 0 : 1, txok, true);
+ 		}
+ 
+-		qnum = skb_get_queue_mapping(bf->bf_mpdu);
+-
+ 		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);
+ 
+-		if (txq == sc->tx.txq_map[qnum])
+-			ath_wake_mac80211_queue(sc, qnum);
+-
+ 		spin_lock_bh(&txq->axq_lock);
+ 		if (sc->sc_flags & SC_OP_TXAGGR)
+ 			ath_txq_schedule(sc, txq);
+@@ -2163,7 +2158,6 @@ void ath_tx_edma_tasklet(struct ath_soft
+ 	struct list_head bf_head;
+ 	int status;
+ 	int txok;
+-	int qnum;
+ 
+ 	for (;;) {
+ 		status = ath9k_hw_txprocdesc(ah, NULL, (void *)&txs);
+@@ -2209,8 +2203,6 @@ void ath_tx_edma_tasklet(struct ath_soft
+ 			ath_tx_rc_status(bf, &txs, 1, txok ? 0 : 1, txok, true);
+ 		}
+ 
+-		qnum = skb_get_queue_mapping(bf->bf_mpdu);
+-
+ 		if (bf_isampdu(bf))
+ 			ath_tx_complete_aggr(sc, txq, bf, &bf_head, &txs,
+ 					     txok, true);
+@@ -2218,9 +2210,6 @@ void ath_tx_edma_tasklet(struct ath_soft
+ 			ath_tx_complete_buf(sc, bf, txq, &bf_head,
+ 					    &txs, txok, 0);
+ 
+-		if (txq == sc->tx.txq_map[qnum])
+-			ath_wake_mac80211_queue(sc, qnum);
+-
+ 		spin_lock_bh(&txq->axq_lock);
+ 		if (!list_empty(&txq->txq_fifo_pending)) {
+ 			INIT_LIST_HEAD(&bf_head);
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -295,6 +295,8 @@ int ath_set_channel(struct ath_softc *sc
+ 	}
+ 
+  ps_restore:
++	ieee80211_wake_queues(hw);
++
+ 	spin_unlock_bh(&sc->sc_pcu_lock);
+ 
+ 	ath9k_ps_restore(sc);
diff --git a/package/mac80211/patches/531-ath9k_suppress_bogus_error_message.patch b/package/mac80211/patches/531-ath9k_suppress_bogus_error_message.patch
new file mode 100644
index 0000000000..6200602907
--- /dev/null
+++ b/package/mac80211/patches/531-ath9k_suppress_bogus_error_message.patch
@@ -0,0 +1,14 @@
+--- a/drivers/net/wireless/ath/ath9k/beacon.c
++++ b/drivers/net/wireless/ath/ath9k/beacon.c
+@@ -279,10 +279,8 @@ int ath_beacon_alloc(struct ath_wiphy *a
+ 
+ 	/* NB: the beacon data buffer must be 32-bit aligned. */
+ 	skb = ieee80211_beacon_get(sc->hw, vif);
+-	if (skb == NULL) {
+-		ath_err(common, "ieee80211_beacon_get failed\n");
++	if (skb == NULL)
+ 		return -ENOMEM;
+-	}
+ 
+ 	tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
+ 	sc->beacon.bc_tstamp = le64_to_cpu(tstamp);