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 } src;
23 union {
24 __be32 ip4;
25#if IS_ENABLED(CONFIG_IPV6)
26 struct in6_addr ip6;
27#endif
28 } dst;
29 __be16 proto;
30 __u16 vid;
31};
32
33struct br_ip_list {
34 struct list_head list;
35 struct br_ip addr;
36};
37
38#define BR_HAIRPIN_MODE BIT(0)
39#define BR_BPDU_GUARD BIT(1)
40#define BR_ROOT_BLOCK BIT(2)
41#define BR_MULTICAST_FAST_LEAVE BIT(3)
42#define BR_ADMIN_COST BIT(4)
43#define BR_LEARNING BIT(5)
44#define BR_FLOOD BIT(6)
45#define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
46#define BR_PROMISC BIT(7)
47#define BR_PROXYARP BIT(8)
48#define BR_LEARNING_SYNC BIT(9)
49#define BR_PROXYARP_WIFI BIT(10)
50#define BR_MCAST_FLOOD BIT(11)
51#define BR_MULTICAST_TO_UNICAST BIT(12)
52#define BR_VLAN_TUNNEL BIT(13)
53#define BR_BCAST_FLOOD BIT(14)
54#define BR_NEIGH_SUPPRESS BIT(15)
55#define BR_ISOLATED BIT(16)
56#define BR_MRP_AWARE BIT(17)
57#define BR_MRP_LOST_CONT BIT(18)
58#define BR_MRP_LOST_IN_CONT BIT(19)
59
60#define BR_DEFAULT_AGEING_TIME (300 * HZ)
61
62extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
63
64#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
65int br_multicast_list_adjacent(struct net_device *dev,
66 struct list_head *br_ip_list);
67bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
68bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
69bool br_multicast_enabled(const struct net_device *dev);
70bool br_multicast_router(const struct net_device *dev);
71#else
72static inline int br_multicast_list_adjacent(struct net_device *dev,
73 struct list_head *br_ip_list)
74{
75 return 0;
76}
77static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
78 int proto)
79{
80 return false;
81}
82static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
83 int proto)
84{
85 return false;
86}
87static inline bool br_multicast_enabled(const struct net_device *dev)
88{
89 return false;
90}
91static inline bool br_multicast_router(const struct net_device *dev)
92{
93 return false;
94}
95#endif
96
97#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
98bool br_vlan_enabled(const struct net_device *dev);
99int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
100int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
101int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
102int br_vlan_get_info(const struct net_device *dev, u16 vid,
103 struct bridge_vlan_info *p_vinfo);
104#else
105static inline bool br_vlan_enabled(const struct net_device *dev)
106{
107 return false;
108}
109
110static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
111{
112 return -EINVAL;
113}
114
115static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
116{
117 return -EINVAL;
118}
119
120static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
121{
122 return -EINVAL;
123}
124
125static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
126 struct bridge_vlan_info *p_vinfo)
127{
128 return -EINVAL;
129}
130#endif
131
132#if IS_ENABLED(CONFIG_BRIDGE)
133struct net_device *br_fdb_find_port(const struct net_device *br_dev,
134 const unsigned char *addr,
135 __u16 vid);
136void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
137bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
138#else
139static inline struct net_device *
140br_fdb_find_port(const struct net_device *br_dev,
141 const unsigned char *addr,
142 __u16 vid)
143{
144 return NULL;
145}
146
147static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
148{
149}
150
151static inline bool
152br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
153{
154 return false;
155}
156#endif
157
158#endif