ixgbe: should not use HW_CSUM, should use IP* flags

as mentioned by Herbert, our hardware supports IP offloads, not full
checksum offloads for any protocol in existence (even though the
hardware just provides generic csum support over any range of bytes)
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/net/ixgbe/ixgbe_ethtool.c

@@ -233,15 +233,15 @@ static int ixgbe_set_rx_csum(struct net_device *netdev, u32 data)
 
 static u32 ixgbe_get_tx_csum(struct net_device *netdev)
 {
-	return (netdev->features & NETIF_F_HW_CSUM) != 0;
+	return (netdev->features & NETIF_F_IP_CSUM) != 0;
 }
 
 static int ixgbe_set_tx_csum(struct net_device *netdev, u32 data)
 {
 	if (data)
-		netdev->features |= NETIF_F_HW_CSUM;
+		netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 	else
-		netdev->features &= ~NETIF_F_HW_CSUM;
+		netdev->features &= ~NETIF_F_IP_CSUM;
 
 	return 0;
 }

drivers/net/ixgbe/ixgbe_main.c

@@ -3593,7 +3593,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 		goto err_sw_init;
 
 	netdev->features = NETIF_F_SG |
-			   NETIF_F_HW_CSUM |
+			   NETIF_F_IP_CSUM |
 			   NETIF_F_HW_VLAN_TX |
 			   NETIF_F_HW_VLAN_RX |
 			   NETIF_F_HW_VLAN_FILTER;
@@ -3604,7 +3604,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 
 	netdev->vlan_features |= NETIF_F_TSO;
 	netdev->vlan_features |= NETIF_F_TSO6;
-	netdev->vlan_features |= NETIF_F_HW_CSUM;
+	netdev->vlan_features |= NETIF_F_IP_CSUM;
 	netdev->vlan_features |= NETIF_F_SG;
 
 	if (pci_using_dac)