igbvf: convert to ndo_fix_features

Private rx_csum flags are now duplicate of netdev->features & NETIF_F_RXCSUM.
Removing this needs deeper surgery.

Things noticed:
 - HW VLAN acceleration probably can be toggled, but it's left as is
 - the resets on RX csum offload change can probably be avoided
 - there is A LOT of copy-and-pasted code here
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/igbvf/ethtool.c

@@ -128,55 +128,6 @@ static int igbvf_set_pauseparam(struct net_device *netdev,
 	return -EOPNOTSUPP;
 }
 
-static u32 igbvf_get_rx_csum(struct net_device *netdev)
-{
-	struct igbvf_adapter *adapter = netdev_priv(netdev);
-	return !(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED);
-}
-
-static int igbvf_set_rx_csum(struct net_device *netdev, u32 data)
-{
-	struct igbvf_adapter *adapter = netdev_priv(netdev);
-
-	if (data)
-		adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
-	else
-		adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
-
-	return 0;
-}
-
-static u32 igbvf_get_tx_csum(struct net_device *netdev)
-{
-	return (netdev->features & NETIF_F_IP_CSUM) != 0;
-}
-
-static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
-{
-	if (data)
-		netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
-	else
-		netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
-	return 0;
-}
-
-static int igbvf_set_tso(struct net_device *netdev, u32 data)
-{
-	struct igbvf_adapter *adapter = netdev_priv(netdev);
-
-	if (data) {
-		netdev->features |= NETIF_F_TSO;
-		netdev->features |= NETIF_F_TSO6;
-	} else {
-		netdev->features &= ~NETIF_F_TSO;
-		netdev->features &= ~NETIF_F_TSO6;
-	}
-
-	dev_info(&adapter->pdev->dev, "TSO is %s\n",
-	         data ? "Enabled" : "Disabled");
-	return 0;
-}
-
 static u32 igbvf_get_msglevel(struct net_device *netdev)
 {
 	struct igbvf_adapter *adapter = netdev_priv(netdev);
@@ -507,14 +458,6 @@ static const struct ethtool_ops igbvf_ethtool_ops = {
 	.set_ringparam		= igbvf_set_ringparam,
 	.get_pauseparam		= igbvf_get_pauseparam,
 	.set_pauseparam		= igbvf_set_pauseparam,
-	.get_rx_csum            = igbvf_get_rx_csum,
-	.set_rx_csum            = igbvf_set_rx_csum,
-	.get_tx_csum		= igbvf_get_tx_csum,
-	.set_tx_csum		= igbvf_set_tx_csum,
-	.get_sg			= ethtool_op_get_sg,
-	.set_sg			= ethtool_op_set_sg,
-	.get_tso		= ethtool_op_get_tso,
-	.set_tso		= igbvf_set_tso,
 	.self_test		= igbvf_diag_test,
 	.get_sset_count		= igbvf_get_sset_count,
 	.get_strings		= igbvf_get_strings,

drivers/net/ethernet/intel/igbvf/netdev.c

@@ -2530,6 +2530,18 @@ static void igbvf_print_device_info(struct igbvf_adapter *adapter)
 	dev_info(&pdev->dev, "MAC: %d\n", hw->mac.type);
 }
 
+static int igbvf_set_features(struct net_device *netdev, u32 features)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	if (features & NETIF_F_RXCSUM)
+		adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
+	else
+		adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
+
+	return 0;
+}
+
 static const struct net_device_ops igbvf_netdev_ops = {
 	.ndo_open                       = igbvf_open,
 	.ndo_stop                       = igbvf_close,
@@ -2545,6 +2557,7 @@ static const struct net_device_ops igbvf_netdev_ops = {
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_poll_controller            = igbvf_netpoll,
 #endif
+	.ndo_set_features               = igbvf_set_features,
 };
 
 /**
@@ -2652,16 +2665,18 @@ static int __devinit igbvf_probe(struct pci_dev *pdev,
 
 	adapter->bd_number = cards_found++;
 
-	netdev->features = NETIF_F_SG |
+	netdev->hw_features = NETIF_F_SG |
 	                   NETIF_F_IP_CSUM |
+			   NETIF_F_IPV6_CSUM |
+			   NETIF_F_TSO |
+			   NETIF_F_TSO6 |
+			   NETIF_F_RXCSUM;
+
+	netdev->features = netdev->hw_features |
 	                   NETIF_F_HW_VLAN_TX |
 	                   NETIF_F_HW_VLAN_RX |
 	                   NETIF_F_HW_VLAN_FILTER;
 
-	netdev->features |= NETIF_F_IPV6_CSUM;
-	netdev->features |= NETIF_F_TSO;
-	netdev->features |= NETIF_F_TSO6;
-
 	if (pci_using_dac)
 		netdev->features |= NETIF_F_HIGHDMA;