ath9k: remove the queue length limiting patch, the approach was experimental, not used by default and a different solution is required

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32515 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/mac80211/patches/530-ath9k_limit_qlen.patch

@@ -1,143 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/ath9k.h
-+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
-@@ -244,6 +244,7 @@ struct ath_atx_tid {
- 	struct ath_node *an;
- 	struct ath_atx_ac *ac;
- 	unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
-+	int buf_pending;
- 	int bar_index;
- 	u16 seq_start;
- 	u16 seq_next;
-@@ -290,6 +291,9 @@ struct ath_tx_control {
-  *  (axq_qnum).
-  */
- struct ath_tx {
-+	u32 qlen_single;
-+	u32 qlen_aggr;
-+
- 	u16 seq_no;
- 	u32 txqsetup;
- 	spinlock_t txbuflock;
---- a/drivers/net/wireless/ath/ath9k/debug.c
-+++ b/drivers/net/wireless/ath/ath9k/debug.c
-@@ -1647,6 +1647,10 @@ int ath9k_init_debug(struct ath_hw *ah)
- 			    &fops_interrupt);
- 	debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc,
- 			    &fops_xmit);
-+	debugfs_create_u32("qlen_single", S_IRUSR | S_IWUSR,
-+			   sc->debug.debugfs_phy, &sc->tx.qlen_single);
-+	debugfs_create_u32("qlen_aggr", S_IRUSR | S_IWUSR,
-+			   sc->debug.debugfs_phy, &sc->tx.qlen_aggr);
- 	debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy, sc,
- 			    &fops_stations);
- 	debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc,
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -393,6 +393,14 @@ static void ath_tx_count_frames(struct a
- 	}
- }
- 
-+static struct ath_atx_tid *ath_get_tid(struct ath_node *an, struct sk_buff *skb)
-+{
-+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-+	u8 tidno;
-+
-+	tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
-+	return ATH_AN_2_TID(an, tidno);
-+}
- 
- static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
- 				 struct ath_buf *bf, struct list_head *bf_q,
-@@ -487,6 +495,8 @@ static void ath_tx_complete_aggr(struct 
- 	__skb_queue_head_init(&bf_pending);
- 
- 	ath_tx_count_frames(sc, bf, ts, txok, &nframes, &nbad);
-+	tid->buf_pending -= nframes;
-+
- 	while (bf) {
- 		u16 seqno = bf->bf_state.seqno;
- 
-@@ -885,6 +895,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_
- 			ath_tx_addto_baw(sc, tid, seqno);
- 		bf->bf_state.ndelim = ndelim;
- 
-+		tid->buf_pending++;
- 		__skb_unlink(skb, &tid->buf_q);
- 		list_add_tail(&bf->list, bf_q);
- 		if (bf_prev)
-@@ -1740,6 +1751,8 @@ static void ath_tx_send_ampdu(struct ath
- 	/* Add sub-frame to BAW */
- 	ath_tx_addto_baw(sc, tid, bf->bf_state.seqno);
- 
-+	tid->buf_pending++;
-+
- 	/* Queue to h/w without aggregation */
- 	TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw);
- 	bf->bf_lastbf = bf;
-@@ -1890,22 +1903,11 @@ error:
- 
- /* FIXME: tx power */
- static void ath_tx_start_dma(struct ath_softc *sc, struct sk_buff *skb,
--			     struct ath_tx_control *txctl)
-+			     struct ath_tx_control *txctl,
-+			     struct ath_atx_tid *tid)
- {
- 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
--	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
--	struct ath_atx_tid *tid = NULL;
- 	struct ath_buf *bf;
--	u8 tidno;
--
--	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) && txctl->an &&
--		ieee80211_is_data_qos(hdr->frame_control)) {
--		tidno = ieee80211_get_qos_ctl(hdr)[0] &
--			IEEE80211_QOS_CTL_TID_MASK;
--		tid = ATH_AN_2_TID(txctl->an, tidno);
--
--		WARN_ON(tid->ac->txq != txctl->txq);
--	}
- 
- 	if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && tid) {
- 		/*
-@@ -1937,6 +1939,7 @@ int ath_tx_start(struct ieee80211_hw *hw
- 	struct ieee80211_vif *vif = info->control.vif;
- 	struct ath_softc *sc = hw->priv;
- 	struct ath_txq *txq = txctl->txq;
-+	struct ath_atx_tid *tid = NULL;
- 	int padpos, padsize;
- 	int frmlen = skb->len + FCS_LEN;
- 	int q;
-@@ -1979,6 +1982,24 @@ int ath_tx_start(struct ieee80211_hw *hw
- 
- 	setup_frame_info(hw, skb, frmlen);
- 
-+	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) && txctl->an &&
-+	    ieee80211_is_data_qos(hdr->frame_control)) {
-+		tid = ath_get_tid(txctl->an, skb);
-+
-+		WARN_ON(tid->ac->txq != txq);
-+	}
-+
-+	if ((info->flags & IEEE80211_TX_CTL_AMPDU) && tid) {
-+		if (sc->tx.qlen_aggr > 0 && skb_queue_len(&tid->buf_q) +
-+		    tid->buf_pending >= sc->tx.qlen_aggr)
-+			return -ENOMEM;
-+	} else {
-+		if (sc->tx.qlen_single > 0 &&
-+		    txq->axq_depth - txq->axq_ampdu_depth >=
-+		      sc->tx.qlen_single)
-+			return -ENOMEM;
-+	}
-+
- 	/*
- 	 * At this point, the vif, hw_key and sta pointers in the tx control
- 	 * info are no longer valid (overwritten by the ath_frame_info data.
-@@ -1993,7 +2014,7 @@ int ath_tx_start(struct ieee80211_hw *hw
- 		txq->stopped = true;
- 	}
- 
--	ath_tx_start_dma(sc, skb, txctl);
-+	ath_tx_start_dma(sc, skb, txctl, tid);
- 
- 	ath_txq_unlock(sc, txq);
- 

package/mac80211/patches/540-ath9k_extra_leds.patch

@@ -1,6 +1,6 @@
 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
-@@ -523,6 +523,9 @@ static inline u16 ath9k_btcoex_aggr_limi
+@@ -519,6 +519,9 @@ static inline u16 ath9k_btcoex_aggr_limi
  #ifdef CONFIG_MAC80211_LEDS
  void ath_init_leds(struct ath_softc *sc);
  void ath_deinit_leds(struct ath_softc *sc);
@@ -10,7 +10,7 @@
  #else
  static inline void ath_init_leds(struct ath_softc *sc)
  {
-@@ -641,6 +644,13 @@ struct ath9k_vif_iter_data {
+@@ -637,6 +640,13 @@ struct ath9k_vif_iter_data {
  	int nadhocs;   /* number of adhoc vifs */
  };
  
@@ -24,7 +24,7 @@
  struct ath_softc {
  	struct ieee80211_hw *hw;
  	struct device *dev;
-@@ -682,9 +692,8 @@ struct ath_softc {
+@@ -678,9 +688,8 @@ struct ath_softc {
  	struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
  
  #ifdef CONFIG_MAC80211_LEDS
@@ -244,7 +244,7 @@
  #ifdef CONFIG_ATH9K_MAC_DEBUG
  
  void ath9k_debug_samp_bb_mac(struct ath_softc *sc)
-@@ -1685,6 +1740,11 @@ int ath9k_init_debug(struct ath_hw *ah)
+@@ -1681,6 +1736,11 @@ int ath9k_init_debug(struct ath_hw *ah)
  			    &fops_samps);
  #endif