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 } u;
23 __be16 proto;
24 __u16 vid;
25 };
26
27 struct br_ip_list {
28 struct list_head list;
29 struct br_ip addr;
30 };
31
32 #define BR_HAIRPIN_MODE BIT(0)
33 #define BR_BPDU_GUARD BIT(1)
34 #define BR_ROOT_BLOCK BIT(2)
35 #define BR_MULTICAST_FAST_LEAVE BIT(3)
36 #define BR_ADMIN_COST BIT(4)
37 #define BR_LEARNING BIT(5)
38 #define BR_FLOOD BIT(6)
39 #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
40 #define BR_PROMISC BIT(7)
41 #define BR_PROXYARP BIT(8)
42 #define BR_LEARNING_SYNC BIT(9)
43 #define BR_PROXYARP_WIFI BIT(10)
44 #define BR_MCAST_FLOOD BIT(11)
45 #define BR_MULTICAST_TO_UNICAST BIT(12)
46 #define BR_VLAN_TUNNEL BIT(13)
47 #define BR_BCAST_FLOOD BIT(14)
48 #define BR_NEIGH_SUPPRESS BIT(15)
49 #define BR_ISOLATED BIT(16)
50
51 #define BR_DEFAULT_AGEING_TIME (300 * HZ)
52
53 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
54
55 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
56 int br_multicast_list_adjacent(struct net_device *dev,
57 struct list_head *br_ip_list);
58 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
59 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
60 bool br_multicast_enabled(const struct net_device *dev);
61 bool br_multicast_router(const struct net_device *dev);
62 #else
br_multicast_list_adjacent(struct net_device * dev,struct list_head * br_ip_list)63 static inline int br_multicast_list_adjacent(struct net_device *dev,
64 struct list_head *br_ip_list)
65 {
66 return 0;
67 }
br_multicast_has_querier_anywhere(struct net_device * dev,int proto)68 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
69 int proto)
70 {
71 return false;
72 }
br_multicast_has_querier_adjacent(struct net_device * dev,int proto)73 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
74 int proto)
75 {
76 return false;
77 }
br_multicast_enabled(const struct net_device * dev)78 static inline bool br_multicast_enabled(const struct net_device *dev)
79 {
80 return false;
81 }
br_multicast_router(const struct net_device * dev)82 static inline bool br_multicast_router(const struct net_device *dev)
83 {
84 return false;
85 }
86 #endif
87
88 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
89 bool br_vlan_enabled(const struct net_device *dev);
90 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
91 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
92 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
93 int br_vlan_get_info(const struct net_device *dev, u16 vid,
94 struct bridge_vlan_info *p_vinfo);
95 #else
br_vlan_enabled(const struct net_device * dev)96 static inline bool br_vlan_enabled(const struct net_device *dev)
97 {
98 return false;
99 }
100
br_vlan_get_pvid(const struct net_device * dev,u16 * p_pvid)101 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
102 {
103 return -EINVAL;
104 }
105
br_vlan_get_proto(const struct net_device * dev,u16 * p_proto)106 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
107 {
108 return -EINVAL;
109 }
110
br_vlan_get_pvid_rcu(const struct net_device * dev,u16 * p_pvid)111 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
112 {
113 return -EINVAL;
114 }
115
br_vlan_get_info(const struct net_device * dev,u16 vid,struct bridge_vlan_info * p_vinfo)116 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
117 struct bridge_vlan_info *p_vinfo)
118 {
119 return -EINVAL;
120 }
121 #endif
122
123 #if IS_ENABLED(CONFIG_BRIDGE)
124 struct net_device *br_fdb_find_port(const struct net_device *br_dev,
125 const unsigned char *addr,
126 __u16 vid);
127 void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
128 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
129 #else
130 static inline struct net_device *
br_fdb_find_port(const struct net_device * br_dev,const unsigned char * addr,__u16 vid)131 br_fdb_find_port(const struct net_device *br_dev,
132 const unsigned char *addr,
133 __u16 vid)
134 {
135 return NULL;
136 }
137
br_fdb_clear_offload(const struct net_device * dev,u16 vid)138 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
139 {
140 }
141
142 static inline bool
br_port_flag_is_set(const struct net_device * dev,unsigned long flag)143 br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
144 {
145 return false;
146 }
147 #endif
148
149 #endif
150
