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