[PATCH net-next v3] net/tun: Call netdev notifiers

[Martin Schiller]

Call netdev notifiers before and after changing the device type.

Signed-off-by: Martin Schiller <ms@xxxxxxxxxx>
---

Change from v2:
use subject_prefix 'net-next' to fix 'fixes_present' issue

Change from v1:
fix 'subject_prefix' and 'checkpatch' warnings

---
 drivers/net/tun.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 3d45d56172cb..2d9a00f41023 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -3071,9 +3071,13 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
 				   "Linktype set failed because interface is up\n");
 			ret = -EBUSY;
 		} else {
+			call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE,
+						 tun->dev);
 			tun->dev->type = (int) arg;
 			netif_info(tun, drv, tun->dev, "linktype set to %d\n",
 				   tun->dev->type);
+			call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE,
+						 tun->dev);
 			ret = 0;
 		}
 		break;
-- 
2.20.1