ixgbevf: Make use of NETIF_F_RXCSUM instead of keeping our own flag

The IXGBE_FLAG_RX_CSUM_ENABLED flag is redundant since NETIF_F_RXCSUM is
keeping the value we want to already have.  As such we can drop the
redundant flag and just make use of NETIF_F_RXCSUM.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbevf/ixgbevf.h

@@ -207,8 +207,7 @@ struct ixgbevf_adapter {
 	 * thus the additional *_CAPABLE flags.
 	 */
 	u32 flags;
-#define IXGBE_FLAG_RX_CSUM_ENABLED              (u32)(1)
-#define IXGBE_FLAG_IN_WATCHDOG_TASK             (u32)(1 << 1)
+#define IXGBE_FLAG_IN_WATCHDOG_TASK             (u32)(1)
 
 	/* OS defined structs */
 	struct net_device *netdev;

drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

@@ -307,7 +307,7 @@ static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter *adapter,
 	skb_checksum_none_assert(skb);
 
 	/* Rx csum disabled */
-	if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
+	if (!(adapter->netdev->features & NETIF_F_RXCSUM))
 		return;
 
 	/* if IP and error */
@@ -2077,9 +2077,6 @@ static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
 	adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD;
 	adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD;
 
-	/* enable rx csum by default */
-	adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
-
 	set_bit(__IXGBEVF_DOWN, &adapter->state);
 	return 0;
 
@@ -3112,19 +3109,6 @@ static struct rtnl_link_stats64 *ixgbevf_get_stats(struct net_device *netdev,
 	return stats;
 }
 
-static int ixgbevf_set_features(struct net_device *netdev,
-	netdev_features_t features)
-{
-	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
-
-	if (features & NETIF_F_RXCSUM)
-		adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
-	else
-		adapter->flags &= ~IXGBE_FLAG_RX_CSUM_ENABLED;
-
-	return 0;
-}
-
 static const struct net_device_ops ixgbe_netdev_ops = {
 	.ndo_open		= ixgbevf_open,
 	.ndo_stop		= ixgbevf_close,
@@ -3137,7 +3121,6 @@ static const struct net_device_ops ixgbe_netdev_ops = {
 	.ndo_tx_timeout		= ixgbevf_tx_timeout,
 	.ndo_vlan_rx_add_vid	= ixgbevf_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid	= ixgbevf_vlan_rx_kill_vid,
-	.ndo_set_features	= ixgbevf_set_features,
 };
 
 static void ixgbevf_assign_netdev_ops(struct net_device *dev)