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#define BR_TX_FWD_OFFLOAD BIT(20)
61#define BR_PORT_LOCKED BIT(21)
62#define BR_PORT_MAB BIT(22)
63#define BR_NEIGH_VLAN_SUPPRESS BIT(23)
64
65#define BR_DEFAULT_AGEING_TIME (300 * HZ)
66
67struct net_bridge;
68void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br,
69 unsigned int cmd, struct ifreq *ifr,
70 void __user *uarg));
71int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd,
72 struct ifreq *ifr, void __user *uarg);
73
74#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
75int br_multicast_list_adjacent(struct net_device *dev,
76 struct list_head *br_ip_list);
77bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
78bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
79bool br_multicast_has_router_adjacent(struct net_device *dev, int proto);
80bool br_multicast_enabled(const struct net_device *dev);
81bool br_multicast_router(const struct net_device *dev);
82#else
83static inline int br_multicast_list_adjacent(struct net_device *dev,
84 struct list_head *br_ip_list)
85{
86 return 0;
87}
88static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
89 int proto)
90{
91 return false;
92}
93static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
94 int proto)
95{
96 return false;
97}
98
99static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
100 int proto)
101{
102 return true;
103}
104
105static inline bool br_multicast_enabled(const struct net_device *dev)
106{
107 return false;
108}
109static inline bool br_multicast_router(const struct net_device *dev)
110{
111 return false;
112}
113#endif
114
115#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
116bool br_vlan_enabled(const struct net_device *dev);
117int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
118int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
119int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
120int br_vlan_get_info(const struct net_device *dev, u16 vid,
121 struct bridge_vlan_info *p_vinfo);
122int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
123 struct bridge_vlan_info *p_vinfo);
124bool br_mst_enabled(const struct net_device *dev);
125int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids);
126int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state);
127#else
128static inline bool br_vlan_enabled(const struct net_device *dev)
129{
130 return false;
131}
132
133static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
134{
135 return -EINVAL;
136}
137
138static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
139{
140 return -EINVAL;
141}
142
143static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
144{
145 return -EINVAL;
146}
147
148static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
149 struct bridge_vlan_info *p_vinfo)
150{
151 return -EINVAL;
152}
153
154static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
155 struct bridge_vlan_info *p_vinfo)
156{
157 return -EINVAL;
158}
159
160static inline bool br_mst_enabled(const struct net_device *dev)
161{
162 return false;
163}
164
165static inline int br_mst_get_info(const struct net_device *dev, u16 msti,
166 unsigned long *vids)
167{
168 return -EINVAL;
169}
170static inline int br_mst_get_state(const struct net_device *dev, u16 msti,
171 u8 *state)
172{
173 return -EINVAL;
174}
175#endif
176
177#if IS_ENABLED(CONFIG_BRIDGE)
178struct net_device *br_fdb_find_port(const struct net_device *br_dev,
179 const unsigned char *addr,
180 __u16 vid);
181void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
182bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
183u8 br_port_get_stp_state(const struct net_device *dev);
184clock_t br_get_ageing_time(const struct net_device *br_dev);
185#else
186static inline struct net_device *
187br_fdb_find_port(const struct net_device *br_dev,
188 const unsigned char *addr,
189 __u16 vid)
190{
191 return NULL;
192}
193
194static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
195{
196}
197
198static inline bool
199br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
200{
201 return false;
202}
203
204static inline u8 br_port_get_stp_state(const struct net_device *dev)
205{
206 return BR_STATE_DISABLED;
207}
208
209static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
210{
211 return 0;
212}
213#endif
214
215#endif
216

source code of linux/include/linux/if_bridge.h