On 01/05/2018 03:42 AM, Eduardo Otubo wrote: > 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 <ot...@redhat.com>
Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com> Should this go to stable trees as well? -boris > --- > drivers/net/xen-netfront.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c > index c5a34671abda..9bd7ddeeb6a5 100644 > --- a/drivers/net/xen-netfront.c > +++ b/drivers/net/xen-netfront.c > @@ -1326,6 +1326,7 @@ static struct net_device *xennet_create_dev(struct > xenbus_device *dev) > > netif_carrier_off(netdev); > > + xenbus_switch_state(dev, XenbusStateInitialising); > return netdev; > > exit: