+static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value edata = { ETHTOOL_GGRO };
+
+ edata.data = dev->features & NETIF_F_GRO;
+ if (copy_to_user(useraddr, &edata, sizeof(edata)))
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)))
+ return -EFAULT;
+
+ if (edata.data) {
+ if (!dev->ethtool_ops->get_rx_csum ||
+ !dev->ethtool_ops->get_rx_csum(dev))
+ return -EINVAL;
+ dev->features |= NETIF_F_GRO;
+ } else
+ dev->features &= ~NETIF_F_GRO;
+
+ return 0;
+}
+