diff options
| author | Woojung.Huh@microchip.com <Woojung.Huh@microchip.com> | 2016-01-27 22:57:54 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-28 22:51:43 -0800 |
| commit | 4b2a4a965331a8ce7303b43039ce43651ef80fb0 (patch) | |
| tree | 355753a73c47b72e9da93a9a3a72f14f2597b365 /drivers/net | |
| parent | a0db7d10b76e98df0cb5d4ee1ec5b8e5fbe2038c (diff) | |
| download | linux-4b2a4a965331a8ce7303b43039ce43651ef80fb0.tar.bz2 | |
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: Woojung Huh <woojung.huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/usb/lan78xx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 650e71604d86..1c299b8a162d 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2263,7 +2263,9 @@ netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) if (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); } else { netif_dbg(dev, tx_err, dev->net, |