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Commit eac8e385 authored by Sujith's avatar Sujith Committed by John W. Linville
Browse files

ath9k_htc: Add dropped SKB count to debugfs 



Signed-off-by: default avatarSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 0daa3e3a

drivers/net/wireless/ath/ath9k/hif_usb.c

+9 −4
Original line number Diff line number Diff line
@@ -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);

drivers/net/wireless/ath/ath9k/htc.h

+1 −0
Original line number Diff line number Diff line
@@ -261,6 +261,7 @@ struct ath_tx_stats { 
	u32 buf_completed;

	u32 skb_queued;

	u32 skb_completed;

	u32 skb_dropped;

};



struct ath_rx_stats {

drivers/net/wireless/ath/ath9k/htc_drv_main.c

+3 −0
Original line number Diff line number Diff line
@@ -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);

}