macvlan: add support for ethtool get settings

@@ -333,10 +333,34 @@ static u32 macvlan_ethtool_get_rx_csum(s
 	return lowerdev->ethtool_ops->get_rx_csum(lowerdev);
 }
 
+static int macvlan_ethtool_get_settings(struct net_device *dev,
+					struct ethtool_cmd *cmd)
+{
+	const struct macvlan_dev *vlan = netdev_priv(dev);
+	struct net_device *lowerdev = vlan->lowerdev;
+
+	if (!lowerdev->ethtool_ops->get_settings)
+		return -EOPNOTSUPP;
+
+	return lowerdev->ethtool_ops->get_settings(lowerdev, cmd);
+}
+
+static u32 macvlan_ethtool_get_flags(struct net_device *dev)
+{
+	const struct macvlan_dev *vlan = netdev_priv(dev);
+	struct net_device *lowerdev = vlan->lowerdev;
+
+	if (!lowerdev->ethtool_ops->get_flags)
+		return 0;
+	return lowerdev->ethtool_ops->get_flags(lowerdev);
+}
+
 static const struct ethtool_ops macvlan_ethtool_ops = {
 	.get_link		= ethtool_op_get_link,
+	.get_settings		= macvlan_ethtool_get_settings,
 	.get_rx_csum		= macvlan_ethtool_get_rx_csum,
 	.get_drvinfo		= macvlan_ethtool_get_drvinfo,
+	.get_flags		= macvlan_ethtool_get_flags,
 };
 
 static void macvlan_setup(struct net_device *dev)

@@ -537,6 +537,19 @@ static int macvlan_device_event(struct n
 		list_for_each_entry_safe(vlan, next, &port->vlans, list)
 			macvlan_dellink(vlan->dev);
 		break;
+	case NETDEV_CHANGEMTU:
+		list_for_each_entry(vlan, &port->vlans, list) {
+			int err, oldmtu = vlan->dev->mtu;
+
+			err = dev_set_mtu(vlan->dev, dev->mtu);
+			if (err) {
+				list_for_each_entry_continue_reverse(vlan,
+								     &port->vlans,
+								     list)
+					dev_set_mtu(vlan->dev, oldmtu);
+				return notifier_from_errno(err);
+			}
+		}
 	}
 	return NOTIFY_DONE;
 }