sfc: Enable all TSO features on VLANs

The TSO code already supports IPv6 on VLAN, so enable it.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

drivers/net/sfc/efx.c

@@ -2457,7 +2457,7 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 		net_dev->features |= NETIF_F_TSO6;
 	/* Mask for features that also apply to VLAN devices */
 	net_dev->vlan_features |= (NETIF_F_ALL_CSUM | NETIF_F_SG |
-				   NETIF_F_HIGHDMA | NETIF_F_TSO);
+				   NETIF_F_HIGHDMA | NETIF_F_ALL_TSO);
 	efx = netdev_priv(net_dev);
 	pci_set_drvdata(pci_dev, efx);
 	SET_NETDEV_DEV(net_dev, &pci_dev->dev);