diff options
| -rw-r--r-- | drivers/net/tun.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 3d45d56172cb..7c62d82c57db 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -3071,10 +3071,19 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, "Linktype set failed because interface is up\n"); ret = -EBUSY; } else { + ret = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, + tun->dev); + ret = notifier_to_errno(ret); + if (ret) { + netif_info(tun, drv, tun->dev, + "Refused to change device type\n"); + break; + } tun->dev->type = (int) arg; netif_info(tun, drv, tun->dev, "linktype set to %d\n", tun->dev->type); - ret = 0; + call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, + tun->dev); } break; |