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
16 struct 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 } dst;
29 __be16 proto;
30 __u16 vid;
31 };
32
33 struct br_ip_list {
34 struct list_head list;
35 struct br_ip addr;
36 };
37
38 #define BR_HAIRPIN_MODE BIT(0)
39 #define BR_BPDU_GUARD BIT(1)
40 #define BR_ROOT_BLOCK BIT(2)
41 #define BR_MULTICAST_FAST_LEAVE BIT(3)
42 #define BR_ADMIN_COST BIT(4)
43 #define BR_LEARNING BIT(5)
44 #define BR_FLOOD BIT(6)
45 #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
46 #define BR_PROMISC BIT(7)
47 #define BR_PROXYARP BIT(8)
48 #define BR_LEARNING_SYNC BIT(9)
49 #define BR_PROXYARP_WIFI BIT(10)
50 #define BR_MCAST_FLOOD BIT(11)
51 #define BR_MULTICAST_TO_UNICAST BIT(12)
52 #define BR_VLAN_TUNNEL BIT(13)
53 #define BR_BCAST_FLOOD BIT(14)
54 #define BR_NEIGH_SUPPRESS BIT(15)
55 #define BR_ISOLATED BIT(16)
56 #define BR_MRP_AWARE BIT(17)
57 #define BR_MRP_LOST_CONT BIT(18)
58 #define BR_MRP_LOST_IN_CONT BIT(19)
59
60 #define BR_DEFAULT_AGEING_TIME (300 * HZ)
61
62 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
63
64 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
65 int br_multicast_list_adjacent(struct net_device *dev,
66 struct list_head *br_ip_list);
67 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
68 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
69 bool br_multicast_enabled(const struct net_device *dev);
70 bool br_multicast_router(const struct net_device *dev);
71 #else
br_multicast_list_adjacent(struct net_device * dev,struct list_head * br_ip_list)72 static inline int br_multicast_list_adjacent(struct net_device *dev,
73 struct list_head *br_ip_list)
74 {
75 return 0;
76 }
br_multicast_has_querier_anywhere(struct net_device * dev,int proto)77 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
78 int proto)
79 {
80 return false;
81 }
br_multicast_has_querier_adjacent(struct net_device * dev,int proto)82 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
83 int proto)
84 {
85 return false;
86 }
br_multicast_enabled(const struct net_device * dev)87 static inline bool br_multicast_enabled(const struct net_device *dev)
88 {
89 return false;
90 }
br_multicast_router(const struct net_device * dev)91 static inline bool br_multicast_router(const struct net_device *dev)
92 {
93 return false;
94 }
95 #endif
96
97 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
98 bool br_vlan_enabled(const struct net_device *dev);
99 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
100 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
101 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
102 int br_vlan_get_info(const struct net_device *dev, u16 vid,
103 struct bridge_vlan_info *p_vinfo);
104 #else
br_vlan_enabled(const struct net_device * dev)105 static inline bool br_vlan_enabled(const struct net_device *dev)
106 {
107 return false;
108 }
109
br_vlan_get_pvid(const struct net_device * dev,u16 * p_pvid)110 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
111 {
112 return -EINVAL;
113 }
114
br_vlan_get_proto(const struct net_device * dev,u16 * p_proto)115 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
116 {
117 return -EINVAL;
118 }
119
br_vlan_get_pvid_rcu(const struct net_device * dev,u16 * p_pvid)120 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
121 {
122 return -EINVAL;
123 }
124
br_vlan_get_info(const struct net_device * dev,u16 vid,struct bridge_vlan_info * p_vinfo)125 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
126 struct bridge_vlan_info *p_vinfo)
127 {
128 return -EINVAL;
129 }
130 #endif
131
132 #if IS_ENABLED(CONFIG_BRIDGE)
133 struct net_device *br_fdb_find_port(const struct net_device *br_dev,
134 const unsigned char *addr,
135 __u16 vid);
136 void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
137 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
138 #else
139 static inline struct net_device *
br_fdb_find_port(const struct net_device * br_dev,const unsigned char * addr,__u16 vid)140 br_fdb_find_port(const struct net_device *br_dev,
141 const unsigned char *addr,
142 __u16 vid)
143 {
144 return NULL;
145 }
146
br_fdb_clear_offload(const struct net_device * dev,u16 vid)147 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
148 {
149 }
150
151 static inline bool
br_port_flag_is_set(const struct net_device * dev,unsigned long flag)152 br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
153 {
154 return false;
155 }
156 #endif
157
158 #endif
159