Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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
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_has_router_adjacent(struct net_device *dev, int proto);
71bool br_multicast_enabled(const struct net_device *dev);
72bool br_multicast_router(const struct net_device *dev);
73int br_mdb_replay(struct net_device *br_dev, struct net_device *dev,
74 const void *ctx, bool adding, struct notifier_block *nb,
75 struct netlink_ext_ack *extack);
76#else
77static inline int br_multicast_list_adjacent(struct net_device *dev,
78 struct list_head *br_ip_list)
79{
80 return 0;
81}
82static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
83 int proto)
84{
85 return false;
86}
87static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
88 int proto)
89{
90 return false;
91}
92
93static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
94 int proto)
95{
96 return true;
97}
98
99static inline bool br_multicast_enabled(const struct net_device *dev)
100{
101 return false;
102}
103static inline bool br_multicast_router(const struct net_device *dev)
104{
105 return false;
106}
107static inline int br_mdb_replay(const struct net_device *br_dev,
108 const struct net_device *dev, const void *ctx,
109 bool adding, struct notifier_block *nb,
110 struct netlink_ext_ack *extack)
111{
112 return -EOPNOTSUPP;
113}
114#endif
115
116#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
117bool br_vlan_enabled(const struct net_device *dev);
118int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
119int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
120int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
121int br_vlan_get_info(const struct net_device *dev, u16 vid,
122 struct bridge_vlan_info *p_vinfo);
123int br_vlan_replay(struct net_device *br_dev, struct net_device *dev,
124 const void *ctx, bool adding, struct notifier_block *nb,
125 struct netlink_ext_ack *extack);
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_replay(struct net_device *br_dev,
154 struct net_device *dev, const void *ctx,
155 bool adding, struct notifier_block *nb,
156 struct netlink_ext_ack *extack)
157{
158 return -EOPNOTSUPP;
159}
160#endif
161
162#if IS_ENABLED(CONFIG_BRIDGE)
163struct net_device *br_fdb_find_port(const struct net_device *br_dev,
164 const unsigned char *addr,
165 __u16 vid);
166void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
167bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
168u8 br_port_get_stp_state(const struct net_device *dev);
169clock_t br_get_ageing_time(const struct net_device *br_dev);
170int br_fdb_replay(const struct net_device *br_dev, const struct net_device *dev,
171 const void *ctx, bool adding, struct notifier_block *nb);
172#else
173static inline struct net_device *
174br_fdb_find_port(const struct net_device *br_dev,
175 const unsigned char *addr,
176 __u16 vid)
177{
178 return NULL;
179}
180
181static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
182{
183}
184
185static inline bool
186br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
187{
188 return false;
189}
190
191static inline u8 br_port_get_stp_state(const struct net_device *dev)
192{
193 return BR_STATE_DISABLED;
194}
195
196static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
197{
198 return 0;
199}
200
201static inline int br_fdb_replay(const struct net_device *br_dev,
202 const struct net_device *dev, const void *ctx,
203 bool adding, struct notifier_block *nb)
204{
205 return -EOPNOTSUPP;
206}
207#endif
208
209#endif