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authorDavid Vrabel <david.vrabel@citrix.com>2013-10-07 13:55:19 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-11-20 12:27:47 -0800
commit7e19d6db7caebd7b8ffe29ff687cc399b59790bc (patch)
treedfdb43a40036c86d45ab49d39a08a8f3b749aaf0
parent7ab12337112dce7669c2481f6077b1ebfb048ddc (diff)
downloadvexpress-lsk-7e19d6db7caebd7b8ffe29ff687cc399b59790bc.tar.gz
xen-netback: transition to CLOSED when removing a VIF
[ Upstream commit dc62ccaccfb139d9b04bbc5a2688a4402adbfab3 ] If a guest is destroyed without transitioning its frontend to CLOSED, the domain becomes a zombie as netback was not grant unmapping the shared rings. When removing a VIF, transition the backend to CLOSED so the VIF is disconnected if necessary (which will unmap the shared rings etc). This fixes a regression introduced by 279f438e36c0a70b23b86d2090aeec50155034a9 (xen-netback: Don't destroy the netdev until the vif is shut down). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Paul Durrant <Paul.Durrant@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: Paul Durrant <paul.durrant@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/net/xen-netback/xenbus.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index 805a0a32839..8a9e8750703 100644
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -39,11 +39,15 @@ static int connect_rings(struct backend_info *);
static void connect(struct backend_info *);
static void backend_create_xenvif(struct backend_info *be);
static void unregister_hotplug_status_watch(struct backend_info *be);
+static void set_backend_state(struct backend_info *be,
+ enum xenbus_state state);
static int netback_remove(struct xenbus_device *dev)
{
struct backend_info *be = dev_get_drvdata(&dev->dev);
+ set_backend_state(be, XenbusStateClosed);
+
unregister_hotplug_status_watch(be);
if (be->vif) {
kobject_uevent(&dev->dev.kobj, KOBJ_OFFLINE);