/*
   *	Linux ethernet bridge
   *
   *	Authors:
   *	Lennert Buytenhek		<buytenh@gnu.org>
   *

   *	This program is free software; you can redistribute it and/or
   *	modify it under the terms of the GNU General Public License
   *	as published by the Free Software Foundation; either version
   *	2 of the License, or (at your option) any later version.
   */

  #ifndef _LINUX_IF_BRIDGE_H
  #define _LINUX_IF_BRIDGE_H

  
  #include <linux/netdevice.h>

  #include <uapi/linux/if_bridge.h>

  #include <linux/bitops.h>

  struct br_ip {
  	union {
  		__be32	ip4;
  #if IS_ENABLED(CONFIG_IPV6)
  		struct in6_addr ip6;
  #endif
  	} u;
  	__be16		proto;
  	__u16           vid;
  };
  
  struct br_ip_list {
  	struct list_head list;
  	struct br_ip addr;
  };

  #define BR_HAIRPIN_MODE		BIT(0)
  #define BR_BPDU_GUARD		BIT(1)
  #define BR_ROOT_BLOCK		BIT(2)
  #define BR_MULTICAST_FAST_LEAVE	BIT(3)
  #define BR_ADMIN_COST		BIT(4)
  #define BR_LEARNING		BIT(5)
  #define BR_FLOOD		BIT(6)
  #define BR_AUTO_MASK		(BR_FLOOD | BR_LEARNING)
  #define BR_PROMISC		BIT(7)
  #define BR_PROXYARP		BIT(8)

  #define BR_LEARNING_SYNC	BIT(9)

  #define BR_PROXYARP_WIFI	BIT(10)

  #define BR_MCAST_FLOOD		BIT(11)

  #define BR_MULTICAST_TO_UNICAST	BIT(12)

  #define BR_VLAN_TUNNEL		BIT(13)

  #define BR_BCAST_FLOOD		BIT(14)

  #define BR_DEFAULT_AGEING_TIME	(300 * HZ)

  extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));

  typedef int br_should_route_hook_t(struct sk_buff *skb);

  extern br_should_route_hook_t __rcu *br_should_route_hook;

  
  #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)

  int br_multicast_list_adjacent(struct net_device *dev,
  			       struct list_head *br_ip_list);

  bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);

  bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);

  bool br_multicast_enabled(const struct net_device *dev);

  #else
  static inline int br_multicast_list_adjacent(struct net_device *dev,
  					     struct list_head *br_ip_list)
  {
  	return 0;
  }

  static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
  						     int proto)
  {
  	return false;
  }

  static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
  						     int proto)
  {
  	return false;
  }

  static inline bool br_multicast_enabled(const struct net_device *dev)
  {
  	return false;
  }

  #endif

  #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
  bool br_vlan_enabled(const struct net_device *dev);
  #else
  static inline bool br_vlan_enabled(const struct net_device *dev)
  {
  	return false;
  }
  #endif

  #endif