X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fnet%2Fusb%2Fusbnet.c;h=e4811d7b5af1cb19aad389f231781cede61c3f81;hb=452c447a497dce3c9faeb9ac7f2e1ff39232876b;hp=d74de074a438bc285a47e4d8b2cb807bf9c05453;hpb=a88c32ae15f25fcf0a3c9fadd92f840a1abf0e43;p=karo-tx-linux.git

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index d74de074a438..e4811d7b5af1 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -355,6 +355,15 @@ void usbnet_update_max_qlen(struct usbnet *dev)
 		dev->rx_qlen = MAX_QUEUE_MEMORY / dev->rx_urb_size;
 		dev->tx_qlen = MAX_QUEUE_MEMORY / dev->hard_mtu;
 		break;
+	case USB_SPEED_SUPER:
+		/*
+		 * Not take default 5ms qlen for super speed HC to
+		 * save memory, and iperf tests show 2.5ms qlen can
+		 * work well
+		 */
+		dev->rx_qlen = 5 * MAX_QUEUE_MEMORY / dev->rx_urb_size;
+		dev->tx_qlen = 5 * MAX_QUEUE_MEMORY / dev->hard_mtu;
+		break;
 	default:
 		dev->rx_qlen = dev->tx_qlen = 4;
 	}