This is a note to let you know that I've just added the patch titled
xen-netfront: enable device after manual module load
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xen-netfront-enable-device-after-manual-module-load.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Feb 28 16:19:30 CET 2018
From: Eduardo Otubo <otubo@xxxxxxxxxx>
Date: Fri, 5 Jan 2018 09:42:16 +0100
Subject: xen-netfront: enable device after manual module load
From: Eduardo Otubo <otubo@xxxxxxxxxx>
[ Upstream commit b707fda2df4070785d0fa8a278aa13944c5f51f8 ]
When loading the module after unloading it, the network interface would
not be enabled and thus wouldn't have a backend counterpart and unable
to be used by the guest.
The guest would face errors like:
[root@guest ~]# ethtool -i eth0
Cannot get driver information: No such device
[root@guest ~]# ifconfig eth0
eth0: error fetching interface information: Device not found
This patch initializes the state of the netfront device whenever it is
loaded manually, this state would communicate the netback to create its
device and establish the connection between them.
Signed-off-by: Eduardo Otubo <otubo@xxxxxxxxxx>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/xen-netfront.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1331,6 +1331,7 @@ static struct net_device *xennet_create_
netif_carrier_off(netdev);
+ xenbus_switch_state(dev, XenbusStateInitialising);
return netdev;
exit:
Patches currently in stable-queue which might be from otubo@xxxxxxxxxx are
queue-4.4/xen-netfront-enable-device-after-manual-module-load.patch