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