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stephen hemminger
3b87956ea6
This fixes hang when target device of mirred packet classifier action is removed. If a mirror or redirection action is configured to cause packets to go to another device, the classifier holds a ref count, but was assuming the adminstrator cleaned up all redirections before removing. The fix is to add a notifier and cleanup during unregister. The new list is implicitly protected by RTNL mutex because it is held during filter add/delete as well as notifier. Signed-off-by: Stephen Hemminger <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Signed-off-by: David S. Miller <[email protected]>