virtio_net: allow to change mac when iface is running

Signed-off-by: NJiri Pirko <jpirko@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/virtio_net.c

@@ -679,11 +679,12 @@ static int virtnet_set_mac_address(struct net_device *dev, void *p)
 {
 	struct virtnet_info *vi = netdev_priv(dev);
 	struct virtio_device *vdev = vi->vdev;
-	int ret;
+	struct sockaddr *addr = p;
 
-	ret = eth_mac_addr(dev, p);
-	if (ret)
-		return ret;
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+	dev->addr_assign_type &= ~NET_ADDR_RANDOM;
 
 	if (virtio_has_feature(vdev, VIRTIO_NET_F_MAC))
 		vdev->config->set(vdev, offsetof(struct virtio_net_config, mac),