net: lan78xx: Add support for VLAN filtering.

HW_VLAN_CTAG_FILTER was partially implemented, but not fully to Linux.
Complete the implementation of this.

See #2458.

Signed-off-by: Dave Stevenson <[email protected]>

Author: 6by9

drivers/net/usb/lan78xx.c

@@ -2297,7 +2297,7 @@ static int lan78xx_set_features(struct net_device *netdev,
 		pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_);
 	}
 
-	if (features & NETIF_F_HW_VLAN_CTAG_RX)
+	if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
 		pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_;
 	else
 		pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_;
@@ -2921,6 +2921,9 @@ static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)
 	if (DEFAULT_TSO_CSUM_ENABLE)
 		dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
 
+	if (DEFAULT_VLAN_FILTER_ENABLE)
+		dev->net->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+
 	dev->net->hw_features = dev->net->features;
 
 	ret = lan78xx_setup_irq_domain(dev);