Commit 4b2a4a96 authored by Woojung.Huh@microchip.com's avatar Woojung.Huh@microchip.com Committed by David S. Miller

lan78xx: throttle TX path at slower than SuperSpeed USB

Throttle TX path only at slower than SuperSpeed USB.
SuperSpeed USB has enough bandwidth to maintain GigE.
Signed-off-by: default avatarWoojung Huh <woojung.huh@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a0db7d10
...@@ -2263,7 +2263,9 @@ netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) ...@@ -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,
......
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