From 62a5b7dcee00c8e64e61ed98541c95fd38583116 Mon Sep 17 00:00:00 2001 From: Marc Yang 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 Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- 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 3154b0a..8316b3c 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 2101208..aaa50c0 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++) { -- 2.7.4