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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>
This commit is contained in:
Dave Stevenson 2018-06-25 15:07:12 +01:00 committed by David S. Miller
parent 0ee1f47349
commit 2259b7a64d
1 changed files with 3 additions and 2 deletions
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5
drivers/net/usb/lan78xx.c
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@ -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_;