1/*
2 *	Linux ethernet bridge
3 *
4 *	Authors:
5 *	Lennert Buytenhek		<buytenh@gnu.org>
6 *
7 *	This program is free software; you can redistribute it and/or
8 *	modify it under the terms of the GNU General Public License
9 *	as published by the Free Software Foundation; either version
10 *	2 of the License, or (at your option) any later version.
11 */
12#ifndef _LINUX_IF_BRIDGE_H
13#define _LINUX_IF_BRIDGE_H
14
15
16#include <linux/netdevice.h>
17#include <uapi/linux/if_bridge.h>
18#include <linux/bitops.h>
19
20struct br_ip {
21	union {
22		__be32	ip4;
23#if IS_ENABLED(CONFIG_IPV6)
24		struct in6_addr ip6;
25#endif
26	} u;
27	__be16		proto;
28	__u16           vid;
29};
30
31struct br_ip_list {
32	struct list_head list;
33	struct br_ip addr;
34};
35
36#define BR_HAIRPIN_MODE		BIT(0)
37#define BR_BPDU_GUARD		BIT(1)
38#define BR_ROOT_BLOCK		BIT(2)
39#define BR_MULTICAST_FAST_LEAVE	BIT(3)
40#define BR_ADMIN_COST		BIT(4)
41#define BR_LEARNING		BIT(5)
42#define BR_FLOOD		BIT(6)
43#define BR_AUTO_MASK		(BR_FLOOD | BR_LEARNING)
44#define BR_PROMISC		BIT(7)
45#define BR_PROXYARP		BIT(8)
46#define BR_LEARNING_SYNC	BIT(9)
47#define BR_PROXYARP_WIFI	BIT(10)
48
49extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
50
51typedef int br_should_route_hook_t(struct sk_buff *skb);
52extern br_should_route_hook_t __rcu *br_should_route_hook;
53
54#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
55int br_multicast_list_adjacent(struct net_device *dev,
56			       struct list_head *br_ip_list);
57bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
58bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
59#else
60static inline int br_multicast_list_adjacent(struct net_device *dev,
61					     struct list_head *br_ip_list)
62{
63	return 0;
64}
65static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
66						     int proto)
67{
68	return false;
69}
70static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
71						     int proto)
72{
73	return false;
74}
75#endif
76
77#endif
78