ath9k_htc: Add queue statistics to xmit debugfs file

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 20 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index c251603ab032..351c4a44c984 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -257,12 +257,15 @@ struct ath9k_htc_tx_ctl {
 #define TX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.tx_stats.c++)
 #define RX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.rx_stats.c++)
 
+#define TX_QSTAT_INC(q) (priv->debug.tx_stats.queue_stats[q]++)
+
 struct ath_tx_stats {
         u32 buf_queued;
         u32 buf_completed;
         u32 skb_queued;
         u32 skb_completed;
         u32 skb_dropped;
+        u32 queue_stats[WME_NUM_AC];
 };
 
 struct ath_rx_stats {
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index 9d371c18eb41..cf1112be2a9a 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -617,6 +617,19 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
                         "%20s : %10u\n", "SKBs dropped",
                         priv->debug.tx_stats.skb_dropped);
 
+        len += snprintf(buf + len, sizeof(buf) - len,
+                        "%20s : %10u\n", "BE queued",
+                        priv->debug.tx_stats.queue_stats[WME_AC_BE]);
+        len += snprintf(buf + len, sizeof(buf) - len,
+                        "%20s : %10u\n", "BK queued",
+                        priv->debug.tx_stats.queue_stats[WME_AC_BK]);
+        len += snprintf(buf + len, sizeof(buf) - len,
+                        "%20s : %10u\n", "VI queued",
+                        priv->debug.tx_stats.queue_stats[WME_AC_VI]);
+        len += snprintf(buf + len, sizeof(buf) - len,
+                        "%20s : %10u\n", "VO queued",
+                        priv->debug.tx_stats.queue_stats[WME_AC_VO]);
+
         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 }
 
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index 2571b443ac82..09ff8f1a68e0 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -135,16 +135,20 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb)
 
                 switch (hw_qnum) {
                 case 0:
+                        TX_QSTAT_INC(WME_AC_BE);
                         epid = priv->data_be_ep;
                         break;
                 case 2:
+                        TX_QSTAT_INC(WME_AC_VI);
                         epid = priv->data_vi_ep;
                         break;
                 case 3:
+                        TX_QSTAT_INC(WME_AC_VO);
                         epid = priv->data_vo_ep;
                         break;
                 case 1:
                 default:
+                        TX_QSTAT_INC(WME_AC_BK);
                         epid = priv->data_bk_ep;
                         break;
                 }