net: lan78xx: Allow for VLAN headers in timeout calcs

The frame abort timeout being set by lan78xx_set_rx_max_frame_length
didn't account for any VLAN headers, resulting in very low
throughput if used with tagged VLANs.

Use VLAN_ETH_HLEN instead of ETH_HLEN to correct for this.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 8dff87e..1a1d3cc 100644 (file)
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2298,7 +2298,7 @@ static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu)
        if ((ll_mtu % dev->maxpacket) == 0)
                return -EDOM;
 
-       ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
+       ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + VLAN_ETH_HLEN);
 
        netdev->mtu = new_mtu;
 
@@ -2587,7 +2587,8 @@ static int lan78xx_reset(struct lan78xx_net *dev)
        buf |= FCT_TX_CTL_EN_;
        ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf);
 
-       ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
+       ret = lan78xx_set_rx_max_frame_length(dev,
+                                             dev->net->mtu + VLAN_ETH_HLEN);
 
        ret = lan78xx_read_reg(dev, MAC_RX, &buf);
        buf |= MAC_RX_RXEN_;