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