Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 381e9fff authored by Amitkumar Karwar's avatar Amitkumar Karwar Committed by John W. Linville
Browse files

mwifiex: skip delay main work logic for USB interface. 



We had introduced delay main work logic to avoid processing
interrupts when Rx pending packet count reaches high threshold.
interrupt processing is restarted later when packet count
reduces lower threashold. This helped to reduce unnecessary
overhead and improve throughput for SD and PCIe chipsets.

As there are no interrupts for USB, we will skip this logic for
USB chipsets.

Signed-off-by: default avatarCathy Luo <cluo@marvell.com>
Signed-off-by: default avatarAvinash Patil <patila@marvell.com>
Signed-off-by: default avatarAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 798ea8ee

drivers/net/wireless/mwifiex/main.c

+10 −6
Original line number Diff line number Diff line
@@ -149,7 +149,8 @@ static int mwifiex_process_rx(struct mwifiex_adapter *adapter) 
	/* Check for Rx data */

	while ((skb = skb_dequeue(&adapter->rx_data_q))) {

		atomic_dec(&adapter->rx_pending);

		if (adapter->delay_main_work &&

		if ((adapter->delay_main_work ||

		     adapter->iface_type == MWIFIEX_USB) &&

		    (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {

			if (adapter->if_ops.submit_rem_rx_urbs)

				adapter->if_ops.submit_rem_rx_urbs(adapter);
@@ -202,12 +203,15 @@ int mwifiex_main_process(struct mwifiex_adapter *adapter) 
		    (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY))

			break;



		/* If we process interrupts first, it would increase RX pending

		 * even further. Avoid this by checking if rx_pending has

		 * crossed high threshold and schedule rx work queue

		 * and then process interrupts

		/* For non-USB interfaces, If we process interrupts first, it

		 * would increase RX pending even further. Avoid this by

		 * checking if rx_pending has crossed high threshold and

		 * schedule rx work queue and then process interrupts.

		 * For USB interface, there are no interrupts. We already have

		 * HIGH_RX_PENDING check in usb.c

		 */

		if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING) {

		if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&

		    adapter->iface_type != MWIFIEX_USB) {

			adapter->delay_main_work = true;

			if (!adapter->rx_processing)

				queue_work(adapter->rx_workqueue,