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
53#define BR_DEFAULT_AGEING_TIME (300 * HZ)
54
55extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
56
57#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
58int br_multicast_list_adjacent(struct net_device *dev,
59 struct list_head *br_ip_list);
60bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
61bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
62bool br_multicast_enabled(const struct net_device *dev);
63bool br_multicast_router(const struct net_device *dev);
64#else
65static inline int br_multicast_list_adjacent(struct net_device *dev,
66 struct list_head *br_ip_list)
67{
68 return 0;
69}
70static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
71 int proto)
72{
73 return false;
74}
75static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
76 int proto)
77{
78 return false;
79}
80static inline bool br_multicast_enabled(const struct net_device *dev)
81{
82 return false;
83}
84static inline bool br_multicast_router(const struct net_device *dev)
85{
86 return false;
87}
88#endif
89
90#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
91bool br_vlan_enabled(const struct net_device *dev);
92int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
93int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
94int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
95int br_vlan_get_info(const struct net_device *dev, u16 vid,
96 struct bridge_vlan_info *p_vinfo);
97#else
98static inline bool br_vlan_enabled(const struct net_device *dev)
99{
100 return false;
101}
102
103static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
104{
105 return -EINVAL;
106}
107
108static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
109{
110 return -EINVAL;
111}
112
113static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
114{
115 return -EINVAL;
116}
117
118static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
119 struct bridge_vlan_info *p_vinfo)
120{
121 return -EINVAL;
122}
123#endif
124
125#if IS_ENABLED(CONFIG_BRIDGE)
126struct net_device *br_fdb_find_port(const struct net_device *br_dev,
127 const unsigned char *addr,
128 __u16 vid);
129void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
130bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
131#else
132static inline struct net_device *
133br_fdb_find_port(const struct net_device *br_dev,
134 const unsigned char *addr,
135 __u16 vid)
136{
137 return NULL;
138}
139
140static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
141{
142}
143
144static inline bool
145br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
146{
147 return false;
148}
149#endif
150
151#endif