#ifndef _IF_TUNNEL_H_
  #define _IF_TUNNEL_H_
  
  #include <linux/ip.h>
  #include <linux/in6.h>
  #include <uapi/linux/if_tunnel.h>
  #include <linux/u64_stats_sync.h>
  
  /*
   * Locking : hash tables are protected by RCU and RTNL
   */
  
  #define for_each_ip_tunnel_rcu(pos, start) \
  	for (pos = rcu_dereference(start); pos; pos = rcu_dereference(pos->next))
  
  #endif /* _IF_TUNNEL_H_ */