Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Linux ethernet bridge
4 *
5 * Authors:
6 * Lennert Buytenhek <buytenh@gnu.org>
7 */
8#ifndef _LINUX_IF_BRIDGE_H
9#define _LINUX_IF_BRIDGE_H
10
11
12#include <linux/netdevice.h>
13#include <uapi/linux/if_bridge.h>
14#include <linux/bitops.h>
15
16struct br_ip {
17 union {
18 __be32 ip4;
19#if IS_ENABLED(CONFIG_IPV6)
20 struct in6_addr ip6;
21#endif
22 } u;
23 __be16 proto;
24 __u16 vid;
25};
26
27struct br_ip_list {
28 struct list_head list;
29 struct br_ip addr;
30};
31
32#define BR_HAIRPIN_MODE BIT(0)
33#define BR_BPDU_GUARD BIT(1)
34#define BR_ROOT_BLOCK BIT(2)
35#define BR_MULTICAST_FAST_LEAVE BIT(3)
36#define BR_ADMIN_COST BIT(4)
37#define BR_LEARNING BIT(5)
38#define BR_FLOOD BIT(6)
39#define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
40#define BR_PROMISC BIT(7)
41#define BR_PROXYARP BIT(8)
42#define BR_LEARNING_SYNC BIT(9)
43#define BR_PROXYARP_WIFI BIT(10)
44#define BR_MCAST_FLOOD BIT(11)
45#define BR_MULTICAST_TO_UNICAST BIT(12)
46#define BR_VLAN_TUNNEL BIT(13)
47#define BR_BCAST_FLOOD BIT(14)
48#define BR_NEIGH_SUPPRESS BIT(15)
49#define BR_ISOLATED BIT(16)
50#define BR_MRP_AWARE BIT(17)
51#define BR_MRP_LOST_CONT BIT(18)
52#define BR_MRP_LOST_IN_CONT BIT(19)
53
54#define BR_DEFAULT_AGEING_TIME (300 * HZ)
55
56extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
57
58#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
59int br_multicast_list_adjacent(struct net_device *dev,
60 struct list_head *br_ip_list);
61bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
62bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
63bool br_multicast_enabled(const struct net_device *dev);
64bool br_multicast_router(const struct net_device *dev);
65#else
66static inline int br_multicast_list_adjacent(struct net_device *dev,
67 struct list_head *br_ip_list)
68{
69 return 0;
70}
71static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
72 int proto)
73{
74 return false;
75}
76static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
77 int proto)
78{
79 return false;
80}
81static inline bool br_multicast_enabled(const struct net_device *dev)
82{
83 return false;
84}
85static inline bool br_multicast_router(const struct net_device *dev)
86{
87 return false;
88}
89#endif
90
91#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
92bool br_vlan_enabled(const struct net_device *dev);
93int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
94int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
95int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
96int br_vlan_get_info(const struct net_device *dev, u16 vid,
97 struct bridge_vlan_info *p_vinfo);
98#else
99static inline bool br_vlan_enabled(const struct net_device *dev)
100{
101 return false;
102}
103
104static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
105{
106 return -EINVAL;
107}
108
109static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
110{
111 return -EINVAL;
112}
113
114static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
115{
116 return -EINVAL;
117}
118
119static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
120 struct bridge_vlan_info *p_vinfo)
121{
122 return -EINVAL;
123}
124#endif
125
126#if IS_ENABLED(CONFIG_BRIDGE)
127struct net_device *br_fdb_find_port(const struct net_device *br_dev,
128 const unsigned char *addr,
129 __u16 vid);
130void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
131bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
132#else
133static inline struct net_device *
134br_fdb_find_port(const struct net_device *br_dev,
135 const unsigned char *addr,
136 __u16 vid)
137{
138 return NULL;
139}
140
141static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
142{
143}
144
145static inline bool
146br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
147{
148 return false;
149}
150#endif
151
152#endif