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authorSujith <Sujith.Manoharan@atheros.com>2010-04-16 11:54:00 +0530
committerJohn W. Linville <linville@tuxdriver.com>2010-04-16 15:47:11 -0400
commiteac8e385e9446e591aacbc9ef2c2a3b0836dd2d4 (patch)
tree5484400ffd79db6811cedd2b779b0d69ede2a238 /drivers
parent0daa3e3a7d85d70cdd4d9cc8e589e79a4a37a5ef (diff)
ath9k_htc: Add dropped SKB count to debugfs
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/ath/ath9k/hif_usb.c13
-rw-r--r--drivers/net/wireless/ath/ath9k/htc.h1
-rw-r--r--drivers/net/wireless/ath/ath9k/htc_drv_main.c3
3 files changed, 13 insertions, 4 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index fe994e229898..3091bb3cef9b 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -129,6 +129,7 @@ static void hif_usb_tx_cb(struct urb *urb)
TX_STAT_INC(skb_completed);
} else {
dev_kfree_skb_any(skb);
+ TX_STAT_INC(skb_dropped);
}
}
@@ -149,11 +150,15 @@ static void hif_usb_tx_cb(struct urb *urb)
}
}
-static inline void ath9k_skb_queue_purge(struct sk_buff_head *list)
+static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
+ struct sk_buff_head *list)
{
struct sk_buff *skb;
- while ((skb = __skb_dequeue(list)) != NULL)
+
+ while ((skb = __skb_dequeue(list)) != NULL) {
dev_kfree_skb_any(skb);
+ TX_STAT_INC(skb_dropped);
+ }
}
/* TX lock has to be taken */
@@ -214,7 +219,7 @@ static int __hif_usb_tx(struct hif_device_usb *hif_dev)
ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
if (ret) {
tx_buf->len = tx_buf->offset = 0;
- ath9k_skb_queue_purge(&tx_buf->skb_queue);
+ ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
__skb_queue_head_init(&tx_buf->skb_queue);
list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
hif_dev->tx.tx_buf_cnt++;
@@ -281,7 +286,7 @@ static void hif_usb_stop(void *hif_handle, u8 pipe_id)
unsigned long flags;
spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
- ath9k_skb_queue_purge(&hif_dev->tx.tx_skb_queue);
+ ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue);
hif_dev->tx.tx_skb_cnt = 0;
hif_dev->tx.flags |= HIF_USB_TX_STOP;
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index 78213fc71b09..6a4614a8701b 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -261,6 +261,7 @@ struct ath_tx_stats {
u32 buf_completed;
u32 skb_queued;
u32 skb_completed;
+ u32 skb_dropped;
};
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 2cea577f884d..081f44504285 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -609,6 +609,9 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "SKBs completed",
priv->debug.tx_stats.skb_completed);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "SKBs dropped",
+ priv->debug.tx_stats.skb_dropped);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}