From: Felix Fietkau <nbd@openwrt.org>
Date: Tue, 3 Jul 2012 21:00:47 +0000 (+0000)
Subject: ath9k: add a patch to make the hw queue length configurable via debugfs
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=5cd249655dc7f7c2fa165436864538e517899908;p=openwrt%2Fstaging%2Fsvanheule.git

ath9k: add a patch to make the hw queue length configurable via debugfs

SVN-Revision: 32589
---

diff --git a/package/mac80211/patches/570-ath9k_config_qlen.patch b/package/mac80211/patches/570-ath9k_config_qlen.patch
new file mode 100644
index 0000000000..b0c573d31a
--- /dev/null
+++ b/package/mac80211/patches/570-ath9k_config_qlen.patch
@@ -0,0 +1,59 @@
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -297,6 +297,7 @@ struct ath_tx {
+ 	struct ath_txq txq[ATH9K_NUM_TX_QUEUES];
+ 	struct ath_descdma txdma;
+ 	struct ath_txq *txq_map[WME_NUM_AC];
++	u32 txq_max_pending[WME_NUM_AC];
+ };
+ 
+ struct ath_rx_edma {
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -436,6 +436,7 @@ static int ath9k_init_queues(struct ath_
+ 	for (i = 0; i < WME_NUM_AC; i++) {
+ 		sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i);
+ 		sc->tx.txq_map[i]->mac80211_qnum = i;
++		sc->tx.txq_max_pending[i] = ATH_MAX_QDEPTH;
+ 	}
+ 	return 0;
+ }
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1988,7 +1988,8 @@ int ath_tx_start(struct ieee80211_hw *hw
+ 
+ 	ath_txq_lock(sc, txq);
+ 	if (txq == sc->tx.txq_map[q] &&
+-	    ++txq->pending_frames > ATH_MAX_QDEPTH && !txq->stopped) {
++	    ++txq->pending_frames > sc->tx.txq_max_pending[q] &&
++	    !txq->stopped) {
+ 		ieee80211_stop_queue(sc->hw, q);
+ 		txq->stopped = true;
+ 	}
+@@ -2047,7 +2048,8 @@ static void ath_tx_complete(struct ath_s
+ 		if (WARN_ON(--txq->pending_frames < 0))
+ 			txq->pending_frames = 0;
+ 
+-		if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
++		if (txq->stopped &&
++		    txq->pending_frames < sc->tx.txq_max_pending[q]) {
+ 			ieee80211_wake_queue(sc->hw, q);
+ 			txq->stopped = false;
+ 		}
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -1702,6 +1702,14 @@ 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_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
++			   &sc->tx.txq_max_pending[WME_AC_BK]);
++	debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
++			   &sc->tx.txq_max_pending[WME_AC_BE]);
++	debugfs_create_u32("qlen_vi", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
++			   &sc->tx.txq_max_pending[WME_AC_VI]);
++	debugfs_create_u32("qlen_vo", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
++			   &sc->tx.txq_max_pending[WME_AC_VO]);
+ 	debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy, sc,
+ 			    &fops_stations);
+ 	debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc,