net: Introduce unregister_netdevice_queue()

This patchs adds an unreg_list anchor to struct net_device, and
introduces an unregister_netdevice_queue() function, able to queue
a net_device to a list instead of immediately unregister it.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 83800091a31a..0ded0a4768a0 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -683,6 +683,7 @@ struct net_device
 
         struct list_head        dev_list;
         struct list_head        napi_list;
+        struct list_head        unreg_list;
 
         /* Net device features */
         unsigned long           features;
@@ -1116,7 +1117,13 @@ extern int		dev_close(struct net_device *dev);
 extern void             dev_disable_lro(struct net_device *dev);
 extern int              dev_queue_xmit(struct sk_buff *skb);
 extern int              register_netdevice(struct net_device *dev);
-extern void             unregister_netdevice(struct net_device *dev);
+extern void             unregister_netdevice_queue(struct net_device *dev,
+                                                   struct list_head *head);
+static inline void unregister_netdevice(struct net_device *dev)
+{
+        unregister_netdevice_queue(dev, NULL);
+}
+
 extern void             free_netdev(struct net_device *dev);
 extern void             synchronize_net(void);
 extern int              register_netdevice_notifier(struct notifier_block *nb);