net: Implement for_each_netdev_reverse.
I will need this shortly to implement network namespace shutdown
batching. For sanity sake network devices should be removed in
the reverse order they were created in.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 9428793..daf13d3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1112,6 +1112,8 @@
#define for_each_netdev(net, d) \
list_for_each_entry(d, &(net)->dev_base_head, dev_list)
+#define for_each_netdev_reverse(net, d) \
+ list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
#define for_each_netdev_rcu(net, d) \
list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
#define for_each_netdev_safe(net, d, n) \