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
51#define BR_DEFAULT_AGEING_TIME (300 * HZ)
52
53extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
54
55#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
56int br_multicast_list_adjacent(struct net_device *dev,
57 struct list_head *br_ip_list);
58bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
59bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
60bool br_multicast_enabled(const struct net_device *dev);
61bool br_multicast_router(const struct net_device *dev);
62#else
63static inline int br_multicast_list_adjacent(struct net_device *dev,
64 struct list_head *br_ip_list)
65{
66 return 0;
67}
68static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
69 int proto)
70{
71 return false;
72}
73static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
74 int proto)
75{
76 return false;
77}
78static inline bool br_multicast_enabled(const struct net_device *dev)
79{
80 return false;
81}
82static inline bool br_multicast_router(const struct net_device *dev)
83{
84 return false;
85}
86#endif
87
88#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
89bool br_vlan_enabled(const struct net_device *dev);
90int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
91int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
92int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
93int br_vlan_get_info(const struct net_device *dev, u16 vid,
94 struct bridge_vlan_info *p_vinfo);
95#else
96static inline bool br_vlan_enabled(const struct net_device *dev)
97{
98 return false;
99}
100
101static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
102{
103 return -EINVAL;
104}
105
106static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
107{
108 return -EINVAL;
109}
110
111static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
112{
113 return -EINVAL;
114}
115
116static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
117 struct bridge_vlan_info *p_vinfo)
118{
119 return -EINVAL;
120}
121#endif
122
123#if IS_ENABLED(CONFIG_BRIDGE)
124struct net_device *br_fdb_find_port(const struct net_device *br_dev,
125 const unsigned char *addr,
126 __u16 vid);
127void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
128bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
129#else
130static inline struct net_device *
131br_fdb_find_port(const struct net_device *br_dev,
132 const unsigned char *addr,
133 __u16 vid)
134{
135 return NULL;
136}
137
138static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
139{
140}
141
142static inline bool
143br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
144{
145 return false;
146}
147#endif
148
149#endif