1 files changed, 29 insertions, 0 deletions
diff --git a/datapath/dp_notify.c b/datapath/dp_notify.c
new file mode 100644
index 00000000..56d5c3c9
--- /dev/null
+++ b/datapath/dp_notify.c
@@ -0,0 +1,29 @@
+/*
+ * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007, 2008, 2009 Nicira Networks.
+ */
+
+/* Handle changes to managed devices */
+
+#include <linux/netdevice.h>
+
+#include "datapath.h"
+
+
+static int dp_device_event(struct notifier_block *unused, unsigned long event, 
+		void *ptr) 
+{
+	struct net_device *dev = ptr;
+	struct net_bridge_port *p = dev->br_port;
+	if (event == NETDEV_UNREGISTER && p) {
+		struct datapath *dp = p->dp;
+		mutex_lock(&dp->mutex);
+		dp_del_port(p, NULL);
+		mutex_unlock(&dp->mutex);
+	}
+	return NOTIFY_DONE;
+}
+
+struct notifier_block dp_device_notifier = {
+	.notifier_call = dp_device_event
+};