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Commit bdac9783 authored by Vamsi Krishna's avatar Vamsi Krishna
Browse files

usb: gadget: ether: Add counters for tx packets 



This counter represents number of packets recevied from n/w stack and
will help debug packet drop issues. Also count actual data transferred
instead of length.

Change-Id: I6bbd3b4759cde075d48228d40052de00e20796c4
Signed-off-by: default avatarVamsi Krishna <vskrishn@codeaurora.org>
parent 200a040b

drivers/usb/gadget/u_ether.c

+9 −5
Original line number Diff line number Diff line
@@ -128,6 +128,7 @@ struct eth_dev { 
	/* stats */

	unsigned long		tx_throttle;

	unsigned int		tx_aggr_cnt[DL_MAX_PKTS_PER_XFER];

	unsigned int		tx_pkts_rcvd;

	unsigned int		loop_brk_cnt;

	struct dentry		*uether_dent;

	struct dentry		*uether_dfile;
@@ -687,9 +688,9 @@ static void tx_complete(struct usb_ep *ep, struct usb_request *req) 
		break;

	case 0:

		if (!req->zero)

			dev->net->stats.tx_bytes += req->length-1;

			dev->net->stats.tx_bytes += req->actual-1;

		else

			dev->net->stats.tx_bytes += req->length;

			dev->net->stats.tx_bytes += req->actual;

	}



	if (req->num_sgs) {
@@ -1027,6 +1028,7 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, 
		/* ignores USB_CDC_PACKET_TYPE_DIRECTED */

	}



	dev->tx_pkts_rcvd++;

	if (dev->gadget->sg_supported) {

		skb_queue_tail(&dev->tx_skb_q, skb);

		if (dev->tx_skb_q.qlen > tx_stop_threshold) {
@@ -1897,13 +1899,15 @@ static int uether_stat_show(struct seq_file *s, void *unused) 
	int i;



	if (dev) {

		seq_printf(s, "tx_throttle = %lu\n aggr count:",

		seq_printf(s, "tx_qlen=%u tx_throttle = %lu\n aggr count:",

					dev->tx_skb_q.qlen,

					dev->tx_throttle);

		for (i = 0; i < DL_MAX_PKTS_PER_XFER; i++)

			seq_printf(s, "%u\t", dev->tx_aggr_cnt[i]);



		seq_printf(s, "\nloop_brk_cnt = %u",

					dev->loop_brk_cnt);

		seq_printf(s, "\nloop_brk_cnt = %u\n tx_pkts_rcvd=%u\n",

					dev->loop_brk_cnt,

					dev->tx_pkts_rcvd);

	}



	return ret;