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);
72int br_mdb_replay(struct net_device *br_dev, struct net_device *dev,
73 struct notifier_block *nb, struct netlink_ext_ack *extack);
74#else
75static inline int br_multicast_list_adjacent(struct net_device *dev,
76 struct list_head *br_ip_list)
77{
78 return 0;
79}
80static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
81 int proto)
82{
83 return false;
84}
85static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
86 int proto)
87{
88 return false;
89}
90static inline bool br_multicast_enabled(const struct net_device *dev)
91{
92 return false;
93}
94static inline bool br_multicast_router(const struct net_device *dev)
95{
96 return false;
97}
98static inline int br_mdb_replay(struct net_device *br_dev,
99 struct net_device *dev,
100 struct notifier_block *nb,
101 struct netlink_ext_ack *extack)
102{
103 return -EOPNOTSUPP;
104}
105#endif
106
107#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
108bool br_vlan_enabled(const struct net_device *dev);
109int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
110int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
111int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
112int br_vlan_get_info(const struct net_device *dev, u16 vid,
113 struct bridge_vlan_info *p_vinfo);
114int br_vlan_replay(struct net_device *br_dev, struct net_device *dev,
115 struct notifier_block *nb, struct netlink_ext_ack *extack);
116#else
117static inline bool br_vlan_enabled(const struct net_device *dev)
118{
119 return false;
120}
121
122static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
123{
124 return -EINVAL;
125}
126
127static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
128{
129 return -EINVAL;
130}
131
132static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
133{
134 return -EINVAL;
135}
136
137static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
138 struct bridge_vlan_info *p_vinfo)
139{
140 return -EINVAL;
141}
142
143static inline int br_vlan_replay(struct net_device *br_dev,
144 struct net_device *dev,
145 struct notifier_block *nb,
146 struct netlink_ext_ack *extack)
147{
148 return -EOPNOTSUPP;
149}
150#endif
151
152#if IS_ENABLED(CONFIG_BRIDGE)
153struct net_device *br_fdb_find_port(const struct net_device *br_dev,
154 const unsigned char *addr,
155 __u16 vid);
156void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
157bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
158u8 br_port_get_stp_state(const struct net_device *dev);
159clock_t br_get_ageing_time(struct net_device *br_dev);
160int br_fdb_replay(struct net_device *br_dev, struct net_device *dev,
161 struct notifier_block *nb);
162#else
163static inline struct net_device *
164br_fdb_find_port(const struct net_device *br_dev,
165 const unsigned char *addr,
166 __u16 vid)
167{
168 return NULL;
169}
170
171static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
172{
173}
174
175static inline bool
176br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
177{
178 return false;
179}
180
181static inline u8 br_port_get_stp_state(const struct net_device *dev)
182{
183 return BR_STATE_DISABLED;
184}
185
186static inline clock_t br_get_ageing_time(struct net_device *br_dev)
187{
188 return 0;
189}
190
191static inline int br_fdb_replay(struct net_device *br_dev,
192 struct net_device *dev,
193 struct notifier_block *nb)
194{
195 return -EOPNOTSUPP;
196}
197#endif
198
199#endif