ravb: Factorise ravb_set_features

RZ/G2L supports HW checksum on RX and TX whereas R-Car supports on RX.
Factorise ravb_set_features to support this feature.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/ravb.h

@@ -985,6 +985,7 @@ struct ravb_hw_info {
 	void *(*alloc_rx_desc)(struct net_device *ndev, int q);
 	bool (*receive)(struct net_device *ndev, int *quota, int q);
 	void (*set_rate)(struct net_device *ndev);
+	int (*set_rx_csum_feature)(struct net_device *ndev, netdev_features_t features);
 	const char (*gstrings_stats)[ETH_GSTRING_LEN];
 	size_t gstrings_size;
 	netdev_features_t net_hw_features;

drivers/net/ethernet/renesas/ravb_main.c

@@ -1901,8 +1901,8 @@ static void ravb_set_rx_csum(struct net_device *ndev, bool enable)
 	spin_unlock_irqrestore(&priv->lock, flags);
 }
 
-static int ravb_set_features(struct net_device *ndev,
-			     netdev_features_t features)
+static int ravb_set_features_rx_csum(struct net_device *ndev,
+				     netdev_features_t features)
 {
 	netdev_features_t changed = ndev->features ^ features;
 
@@ -1914,6 +1914,15 @@ static int ravb_set_features(struct net_device *ndev,
 	return 0;
 }
 
+static int ravb_set_features(struct net_device *ndev,
+			     netdev_features_t features)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_hw_info *info = priv->info;
+
+	return info->set_rx_csum_feature(ndev, features);
+}
+
 static const struct net_device_ops ravb_netdev_ops = {
 	.ndo_open		= ravb_open,
 	.ndo_stop		= ravb_close,
@@ -1980,6 +1989,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
 	.alloc_rx_desc = ravb_alloc_rx_desc,
 	.receive = ravb_rcar_rx,
 	.set_rate = ravb_set_rate,
+	.set_rx_csum_feature = ravb_set_features_rx_csum,
 	.gstrings_stats = ravb_gstrings_stats,
 	.gstrings_size = sizeof(ravb_gstrings_stats),
 	.net_hw_features = NETIF_F_RXCSUM,
@@ -1998,6 +2008,7 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
 	.alloc_rx_desc = ravb_alloc_rx_desc,
 	.receive = ravb_rcar_rx,
 	.set_rate = ravb_set_rate,
+	.set_rx_csum_feature = ravb_set_features_rx_csum,
 	.gstrings_stats = ravb_gstrings_stats,
 	.gstrings_size = sizeof(ravb_gstrings_stats),
 	.net_hw_features = NETIF_F_RXCSUM,