From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eduardo Otubo , Boris Ostrovsky , "David S. Miller" , Sasha Levin Subject: [PATCH 4.14 097/115] xen-netfront: enable device after manual module load Date: Fri, 2 Mar 2018 09:51:40 +0100 Message-Id: <20180302084507.766977592@linuxfoundation.org> In-Reply-To: <20180302084503.856536800@linuxfoundation.org> References: <20180302084503.856536800@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eduardo Otubo [ 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 Reviewed-by: Boris Ostrovsky Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/xen-netfront.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -1326,6 +1326,7 @@ static struct net_device *xennet_create_ netif_carrier_off(netdev); + xenbus_switch_state(dev, XenbusStateInitialising); return netdev; exit: