Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

lan78xx: throttle TX path at slower than SuperSpeed USB

Browse source 
Throttle TX path only at slower than SuperSpeed USB.
SuperSpeed USB has enough bandwidth to maintain GigE.

Signed-off-by: Woojung Huh <woojung.huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Woojung.Huh@microchip.com 2016-01-27 22:57:54 +00:00 • committed by David S. Miller
parent a0db7d10b7
commit 4b2a4a9653
1 changed files with 3 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/net/usb/lan78xx.c
View file

@ -2263,7 +2263,9 @@ netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net)
if (skb2) { if (skb2) {
skb_queue_tail(&dev->txq_pend, skb2); skb_queue_tail(&dev->txq_pend, skb2);
if (skb_queue_len(&dev->txq_pend) > 10) /* throttle TX patch at slower than SUPER SPEED USB */
if ((dev->udev->speed < USB_SPEED_SUPER) &&
(skb_queue_len(&dev->txq_pend) > 10))
netif_stop_queue(net); netif_stop_queue(net);
} else { } else {
netif_dbg(dev, tx_err, dev->net, netif_dbg(dev, tx_err, dev->net,