1 /*
2  *	Linux ethernet bridge
3  *
4  *	Authors:
5  *	Lennert Buytenhek		<buytenh@gnu.org>
6  *
7  *	This program is free software; you can redistribute it and/or
8  *	modify it under the terms of the GNU General Public License
9  *	as published by the Free Software Foundation; either version
10  *	2 of the License, or (at your option) any later version.
11  */
12 
13 #ifndef _UAPI_LINUX_IF_BRIDGE_H
14 #define _UAPI_LINUX_IF_BRIDGE_H
15 
16 #include <linux/types.h>
17 
18 #define SYSFS_BRIDGE_ATTR	"bridge"
19 #define SYSFS_BRIDGE_FDB	"brforward"
20 #define SYSFS_BRIDGE_PORT_SUBDIR "brif"
21 #define SYSFS_BRIDGE_PORT_ATTR	"brport"
22 #define SYSFS_BRIDGE_PORT_LINK	"bridge"
23 
24 #define BRCTL_VERSION 1
25 
26 #define BRCTL_GET_VERSION 0
27 #define BRCTL_GET_BRIDGES 1
28 #define BRCTL_ADD_BRIDGE 2
29 #define BRCTL_DEL_BRIDGE 3
30 #define BRCTL_ADD_IF 4
31 #define BRCTL_DEL_IF 5
32 #define BRCTL_GET_BRIDGE_INFO 6
33 #define BRCTL_GET_PORT_LIST 7
34 #define BRCTL_SET_BRIDGE_FORWARD_DELAY 8
35 #define BRCTL_SET_BRIDGE_HELLO_TIME 9
36 #define BRCTL_SET_BRIDGE_MAX_AGE 10
37 #define BRCTL_SET_AGEING_TIME 11
38 #define BRCTL_SET_GC_INTERVAL 12
39 #define BRCTL_GET_PORT_INFO 13
40 #define BRCTL_SET_BRIDGE_STP_STATE 14
41 #define BRCTL_SET_BRIDGE_PRIORITY 15
42 #define BRCTL_SET_PORT_PRIORITY 16
43 #define BRCTL_SET_PATH_COST 17
44 #define BRCTL_GET_FDB_ENTRIES 18
45 
46 #define BR_STATE_DISABLED 0
47 #define BR_STATE_LISTENING 1
48 #define BR_STATE_LEARNING 2
49 #define BR_STATE_FORWARDING 3
50 #define BR_STATE_BLOCKING 4
51 
52 struct __bridge_info {
53 	__u64 designated_root;
54 	__u64 bridge_id;
55 	__u32 root_path_cost;
56 	__u32 max_age;
57 	__u32 hello_time;
58 	__u32 forward_delay;
59 	__u32 bridge_max_age;
60 	__u32 bridge_hello_time;
61 	__u32 bridge_forward_delay;
62 	__u8 topology_change;
63 	__u8 topology_change_detected;
64 	__u8 root_port;
65 	__u8 stp_enabled;
66 	__u32 ageing_time;
67 	__u32 gc_interval;
68 	__u32 hello_timer_value;
69 	__u32 tcn_timer_value;
70 	__u32 topology_change_timer_value;
71 	__u32 gc_timer_value;
72 };
73 
74 struct __port_info {
75 	__u64 designated_root;
76 	__u64 designated_bridge;
77 	__u16 port_id;
78 	__u16 designated_port;
79 	__u32 path_cost;
80 	__u32 designated_cost;
81 	__u8 state;
82 	__u8 top_change_ack;
83 	__u8 config_pending;
84 	__u8 unused0;
85 	__u32 message_age_timer_value;
86 	__u32 forward_delay_timer_value;
87 	__u32 hold_timer_value;
88 };
89 
90 struct __fdb_entry {
91 	__u8 mac_addr[6];
92 	__u8 port_no;
93 	__u8 is_local;
94 	__u32 ageing_timer_value;
95 	__u8 port_hi;
96 	__u8 pad0;
97 	__u16 unused;
98 };
99 
100 /* Bridge Flags */
101 #define BRIDGE_FLAGS_MASTER	1	/* Bridge command to/from master */
102 #define BRIDGE_FLAGS_SELF	2	/* Bridge command to/from lowerdev */
103 
104 #define BRIDGE_MODE_VEB		0	/* Default loopback mode */
105 #define BRIDGE_MODE_VEPA	1	/* 802.1Qbg defined VEPA mode */
106 
107 /* Bridge management nested attributes
108  * [IFLA_AF_SPEC] = {
109  *     [IFLA_BRIDGE_FLAGS]
110  *     [IFLA_BRIDGE_MODE]
111  * }
112  */
113 enum {
114 	IFLA_BRIDGE_FLAGS,
115 	IFLA_BRIDGE_MODE,
116 	__IFLA_BRIDGE_MAX,
117 };
118 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
119 
120 /* Bridge multicast database attributes
121  * [MDBA_MDB] = {
122  *     [MDBA_MDB_ENTRY] = {
123  *         [MDBA_MDB_ENTRY_INFO]
124  *     }
125  * }
126  * [MDBA_ROUTER] = {
127  *    [MDBA_ROUTER_PORT]
128  * }
129  */
130 enum {
131 	MDBA_UNSPEC,
132 	MDBA_MDB,
133 	MDBA_ROUTER,
134 	__MDBA_MAX,
135 };
136 #define MDBA_MAX (__MDBA_MAX - 1)
137 
138 enum {
139 	MDBA_MDB_UNSPEC,
140 	MDBA_MDB_ENTRY,
141 	__MDBA_MDB_MAX,
142 };
143 #define MDBA_MDB_MAX (__MDBA_MDB_MAX - 1)
144 
145 enum {
146 	MDBA_MDB_ENTRY_UNSPEC,
147 	MDBA_MDB_ENTRY_INFO,
148 	__MDBA_MDB_ENTRY_MAX,
149 };
150 #define MDBA_MDB_ENTRY_MAX (__MDBA_MDB_ENTRY_MAX - 1)
151 
152 enum {
153 	MDBA_ROUTER_UNSPEC,
154 	MDBA_ROUTER_PORT,
155 	__MDBA_ROUTER_MAX,
156 };
157 #define MDBA_ROUTER_MAX (__MDBA_ROUTER_MAX - 1)
158 
159 struct br_port_msg {
160 	__u8  family;
161 	__u32 ifindex;
162 };
163 
164 struct br_mdb_entry {
165 	__u32 ifindex;
166 #define MDB_TEMPORARY 0
167 #define MDB_PERMANENT 1
168 	__u8 state;
169 	struct {
170 		union {
171 			__be32	ip4;
172 			struct in6_addr ip6;
173 		} u;
174 		__be16		proto;
175 	} addr;
176 };
177 
178 enum {
179 	MDBA_SET_ENTRY_UNSPEC,
180 	MDBA_SET_ENTRY,
181 	__MDBA_SET_ENTRY_MAX,
182 };
183 #define MDBA_SET_ENTRY_MAX (__MDBA_SET_ENTRY_MAX - 1)
184 
185 #endif /* _UAPI_LINUX_IF_BRIDGE_H */
186