From 62a5b7dcee00c8e64e61ed98541c95fd38583116 Mon Sep 17 00:00:00 2001
From: Marc Yang <yangyang@marvell.com>
Date: Mon, 16 May 2011 19:17:53 -0700
Subject: [PATCH] mwifiex: adjust high/low water marks for tx_pending queue
This is to fix an issue that the throughput of the higher priority
stream gets dropped when a lower priority stream is present.
Signed-off-by: Marc Yang <yangyang@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/mwifiex/main.h | 3 ++-
drivers/net/wireless/mwifiex/txrx.c | 4 +++-
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 3154b0a31ea6d..8316b3cd92cdf 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -69,7 +69,8 @@ struct mwifiex_drv_mode {
#define MWIFIEX_TIMER_10S 10000
#define MWIFIEX_TIMER_1S 1000
-#define MAX_TX_PENDING 60
+#define MAX_TX_PENDING 100
+#define LOW_TX_PENDING 80
#define MWIFIEX_UPLD_SIZE (2312)
diff --git a/drivers/net/wireless/mwifiex/txrx.c b/drivers/net/wireless/mwifiex/txrx.c
index 210120889dfe4..aaa50c0741965 100644
--- a/drivers/net/wireless/mwifiex/txrx.c
+++ b/drivers/net/wireless/mwifiex/txrx.c
@@ -140,7 +140,9 @@ int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
} else {
priv->stats.tx_errors++;
}
- atomic_dec(&adapter->tx_pending);
+
+ if (atomic_dec_return(&adapter->tx_pending) >= LOW_TX_PENDING)
+ goto done;
for (i = 0; i < adapter->priv_num; i++) {
--
2.30.2