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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 
20 struct 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 
31 struct 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 #define BR_MCAST_FLOOD		BIT(11)
49 
50 #define BR_DEFAULT_AGEING_TIME	(300 * HZ)
51 
52 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
53 
54 typedef int br_should_route_hook_t(struct sk_buff *skb);
55 extern br_should_route_hook_t __rcu *br_should_route_hook;
56 
57 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
58 int br_multicast_list_adjacent(struct net_device *dev,
59 			       struct list_head *br_ip_list);
60 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
61 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
62 #else
br_multicast_list_adjacent(struct net_device * dev,struct list_head * br_ip_list)63 static inline int br_multicast_list_adjacent(struct net_device *dev,
64 					     struct list_head *br_ip_list)
65 {
66 	return 0;
67 }
br_multicast_has_querier_anywhere(struct net_device * dev,int proto)68 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
69 						     int proto)
70 {
71 	return false;
72 }
br_multicast_has_querier_adjacent(struct net_device * dev,int proto)73 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
74 						     int proto)
75 {
76 	return false;
77 }
78 #endif
79 
80 #endif
81