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