forked from Minki/linux
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>
This commit is contained in:
parent
0daa3e3a7d
commit
eac8e385e9
drivers/net/wireless/ath/ath9k
@ -129,6 +129,7 @@ static void hif_usb_tx_cb(struct urb *urb)
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TX_STAT_INC(skb_completed);
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} else {
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dev_kfree_skb_any(skb);
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TX_STAT_INC(skb_dropped);
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}
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}
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@ -149,11 +150,15 @@ static void hif_usb_tx_cb(struct urb *urb)
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}
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}
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static inline void ath9k_skb_queue_purge(struct sk_buff_head *list)
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static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
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struct sk_buff_head *list)
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{
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struct sk_buff *skb;
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while ((skb = __skb_dequeue(list)) != NULL)
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while ((skb = __skb_dequeue(list)) != NULL) {
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dev_kfree_skb_any(skb);
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TX_STAT_INC(skb_dropped);
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}
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}
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/* TX lock has to be taken */
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@ -214,7 +219,7 @@ static int __hif_usb_tx(struct hif_device_usb *hif_dev)
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ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
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if (ret) {
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tx_buf->len = tx_buf->offset = 0;
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ath9k_skb_queue_purge(&tx_buf->skb_queue);
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ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
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__skb_queue_head_init(&tx_buf->skb_queue);
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list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
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hif_dev->tx.tx_buf_cnt++;
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@ -281,7 +286,7 @@ static void hif_usb_stop(void *hif_handle, u8 pipe_id)
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unsigned long flags;
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spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
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ath9k_skb_queue_purge(&hif_dev->tx.tx_skb_queue);
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ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue);
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hif_dev->tx.tx_skb_cnt = 0;
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hif_dev->tx.flags |= HIF_USB_TX_STOP;
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spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
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@ -261,6 +261,7 @@ struct ath_tx_stats {
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u32 buf_completed;
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u32 skb_queued;
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u32 skb_completed;
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u32 skb_dropped;
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};
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struct ath_rx_stats {
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@ -609,6 +609,9 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
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len += snprintf(buf + len, sizeof(buf) - len,
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"%20s : %10u\n", "SKBs completed",
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priv->debug.tx_stats.skb_completed);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%20s : %10u\n", "SKBs dropped",
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priv->debug.tx_stats.skb_dropped);
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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}
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