dpaa_eth: implement ioctl() for PHY-related ops

This commit adds the ndo_do_ioctl() callback which allows the userspace to
access PHY registers, for example. This will make mii-diag and similar
tools work.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/dpaa/dpaa_eth.c

@@ -2333,6 +2333,13 @@ static int dpaa_eth_stop(struct net_device *net_dev)
 	return err;
 }
 
+static int dpaa_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
+{
+	if (!net_dev->phydev)
+		return -EINVAL;
+	return phy_mii_ioctl(net_dev->phydev, rq, cmd);
+}
+
 static const struct net_device_ops dpaa_ops = {
 	.ndo_open = dpaa_open,
 	.ndo_start_xmit = dpaa_start_xmit,
@@ -2342,6 +2349,7 @@ static const struct net_device_ops dpaa_ops = {
 	.ndo_set_mac_address = dpaa_set_mac_address,
 	.ndo_validate_addr = eth_validate_addr,
 	.ndo_set_rx_mode = dpaa_set_rx_mode,
+	.ndo_do_ioctl = dpaa_ioctl,
 };
 
 static int dpaa_napi_add(struct net_device *net_dev)