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ath9k_htc: Add dropped SKB count to debugfs

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Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2010-04-16 11:54:00 +05:30 committed by John W. Linville
parent 0daa3e3a7d
commit eac8e385e9
3 changed files with 13 additions and 4 deletions
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13
drivers/net/wireless/ath/ath9k/hif_usb.c
View File

@ -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);

1
drivers/net/wireless/ath/ath9k/htc.h
View File

@ -261,6 +261,7 @@ struct ath_tx_stats {
u32 buf_completed;
u32 skb_queued;
u32 skb_completed;
u32 skb_dropped;
};
struct ath_rx_stats {

3
drivers/net/wireless/ath/ath9k/htc_drv_main.c
View File

@ -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);
}