include/linux/if_bridge.h

   1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2 /*
   3  *      Linux ethernet bridge
   4  *
   5  *      Authors:
   6  *      Lennert Buytenhek               <buytenh@gnu.org>
   7  *
   8  *      This program is free software; you can redistribute it and/or
   9  *      modify it under the terms of the GNU General Public License
  10  *      as published by the Free Software Foundation; either version
  11  *      2 of the License, or (at your option) any later version.
  12  */
  13
  14 #ifndef _LINUX_IF_BRIDGE_H
  15 #define _LINUX_IF_BRIDGE_H
  16
  17 #include <linux/types.h>
  18 #include <linux/if_ether.h>
  19 #include <linux/in6.h>
  20
  21 #define SYSFS_BRIDGE_ATTR       "bridge"
  22 #define SYSFS_BRIDGE_FDB        "brforward"
  23 #define SYSFS_BRIDGE_PORT_SUBDIR "brif"
  24 #define SYSFS_BRIDGE_PORT_ATTR  "brport"
  25 #define SYSFS_BRIDGE_PORT_LINK  "bridge"
  26
  27 #define BRCTL_VERSION 1
  28
  29 #define BRCTL_GET_VERSION 0
  30 #define BRCTL_GET_BRIDGES 1
  31 #define BRCTL_ADD_BRIDGE 2
  32 #define BRCTL_DEL_BRIDGE 3
  33 #define BRCTL_ADD_IF 4
  34 #define BRCTL_DEL_IF 5
  35 #define BRCTL_GET_BRIDGE_INFO 6
  36 #define BRCTL_GET_PORT_LIST 7
  37 #define BRCTL_SET_BRIDGE_FORWARD_DELAY 8
  38 #define BRCTL_SET_BRIDGE_HELLO_TIME 9
  39 #define BRCTL_SET_BRIDGE_MAX_AGE 10
  40 #define BRCTL_SET_AGEING_TIME 11
  41 #define BRCTL_SET_GC_INTERVAL 12
  42 #define BRCTL_GET_PORT_INFO 13
  43 #define BRCTL_SET_BRIDGE_STP_STATE 14
  44 #define BRCTL_SET_BRIDGE_PRIORITY 15
  45 #define BRCTL_SET_PORT_PRIORITY 16
  46 #define BRCTL_SET_PATH_COST 17
  47 #define BRCTL_GET_FDB_ENTRIES 18
  48
  49 #define BR_STATE_DISABLED 0
  50 #define BR_STATE_LISTENING 1
  51 #define BR_STATE_LEARNING 2
  52 #define BR_STATE_FORWARDING 3
  53 #define BR_STATE_BLOCKING 4
  54
  55 struct __bridge_info {
  56         __u64 designated_root;
  57         __u64 bridge_id;
  58         __u32 root_path_cost;
  59         __u32 max_age;
  60         __u32 hello_time;
  61         __u32 forward_delay;
  62         __u32 bridge_max_age;
  63         __u32 bridge_hello_time;
  64         __u32 bridge_forward_delay;
  65         __u8 topology_change;
  66         __u8 topology_change_detected;
  67         __u8 root_port;
  68         __u8 stp_enabled;
  69         __u32 ageing_time;
  70         __u32 gc_interval;
  71         __u32 hello_timer_value;
  72         __u32 tcn_timer_value;
  73         __u32 topology_change_timer_value;
  74         __u32 gc_timer_value;
  75 };
  76
  77 struct __port_info {
  78         __u64 designated_root;
  79         __u64 designated_bridge;
  80         __u16 port_id;
  81         __u16 designated_port;
  82         __u32 path_cost;
  83         __u32 designated_cost;
  84         __u8 state;
  85         __u8 top_change_ack;
  86         __u8 config_pending;
  87         __u8 unused0;
  88         __u32 message_age_timer_value;
  89         __u32 forward_delay_timer_value;
  90         __u32 hold_timer_value;
  91 };
  92
  93 struct __fdb_entry {
  94         __u8 mac_addr[ETH_ALEN];
  95         __u8 port_no;
  96         __u8 is_local;
  97         __u32 ageing_timer_value;
  98         __u8 port_hi;
  99         __u8 pad0;
 100         __u16 unused;
 101 };
 102
 103 /* Bridge Flags */
 104 #define BRIDGE_FLAGS_MASTER     1       /* Bridge command to/from master */
 105 #define BRIDGE_FLAGS_SELF       2       /* Bridge command to/from lowerdev */
 106
 107 #define BRIDGE_MODE_VEB         0       /* Default loopback mode */
 108 #define BRIDGE_MODE_VEPA        1       /* 802.1Qbg defined VEPA mode */
 109 #define BRIDGE_MODE_UNDEF       0xFFFF  /* mode undefined */
 110
 111 /* Bridge management nested attributes
 112  * [IFLA_AF_SPEC] = {
 113  *     [IFLA_BRIDGE_FLAGS]
 114  *     [IFLA_BRIDGE_MODE]
 115  *     [IFLA_BRIDGE_VLAN_INFO]
 116  * }
 117  */
 118 enum {
 119         IFLA_BRIDGE_FLAGS,
 120         IFLA_BRIDGE_MODE,
 121         IFLA_BRIDGE_VLAN_INFO,
 122         IFLA_BRIDGE_VLAN_TUNNEL_INFO,
 123         __IFLA_BRIDGE_MAX,
 124 };
 125 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
 126
 127 #define BRIDGE_VLAN_INFO_MASTER (1<<0)  /* Operate on Bridge device as well */
 128 #define BRIDGE_VLAN_INFO_PVID   (1<<1)  /* VLAN is PVID, ingress untagged */
 129 #define BRIDGE_VLAN_INFO_UNTAGGED       (1<<2)  /* VLAN egresses untagged */
 130 #define BRIDGE_VLAN_INFO_RANGE_BEGIN    (1<<3) /* VLAN is start of vlan range */
 131 #define BRIDGE_VLAN_INFO_RANGE_END      (1<<4) /* VLAN is end of vlan range */
 132 #define BRIDGE_VLAN_INFO_BRENTRY        (1<<5) /* Global bridge VLAN entry */
 133
 134 struct bridge_vlan_info {
 135         __u16 flags;
 136         __u16 vid;
 137 };
 138
 139 enum {
 140         IFLA_BRIDGE_VLAN_TUNNEL_UNSPEC,
 141         IFLA_BRIDGE_VLAN_TUNNEL_ID,
 142         IFLA_BRIDGE_VLAN_TUNNEL_VID,
 143         IFLA_BRIDGE_VLAN_TUNNEL_FLAGS,
 144         __IFLA_BRIDGE_VLAN_TUNNEL_MAX,
 145 };
 146
 147 #define IFLA_BRIDGE_VLAN_TUNNEL_MAX (__IFLA_BRIDGE_VLAN_TUNNEL_MAX - 1)
 148
 149 struct bridge_vlan_xstats {
 150         __u64 rx_bytes;
 151         __u64 rx_packets;
 152         __u64 tx_bytes;
 153         __u64 tx_packets;
 154         __u16 vid;
 155         __u16 flags;
 156         __u32 pad2;
 157 };
 158
 159 /* Bridge multicast database attributes
 160  * [MDBA_MDB] = {
 161  *     [MDBA_MDB_ENTRY] = {
 162  *         [MDBA_MDB_ENTRY_INFO] {
 163  *              struct br_mdb_entry
 164  *              [MDBA_MDB_EATTR attributes]
 165  *         }
 166  *     }
 167  * }
 168  * [MDBA_ROUTER] = {
 169  *    [MDBA_ROUTER_PORT] = {
 170  *        u32 ifindex
 171  *        [MDBA_ROUTER_PATTR attributes]
 172  *    }
 173  * }
 174  */
 175 enum {
 176         MDBA_UNSPEC,
 177         MDBA_MDB,
 178         MDBA_ROUTER,
 179         __MDBA_MAX,
 180 };
 181 #define MDBA_MAX (__MDBA_MAX - 1)
 182
 183 enum {
 184         MDBA_MDB_UNSPEC,
 185         MDBA_MDB_ENTRY,
 186         __MDBA_MDB_MAX,
 187 };
 188 #define MDBA_MDB_MAX (__MDBA_MDB_MAX - 1)
 189
 190 enum {
 191         MDBA_MDB_ENTRY_UNSPEC,
 192         MDBA_MDB_ENTRY_INFO,
 193         __MDBA_MDB_ENTRY_MAX,
 194 };
 195 #define MDBA_MDB_ENTRY_MAX (__MDBA_MDB_ENTRY_MAX - 1)
 196
 197 /* per mdb entry additional attributes */
 198 enum {
 199         MDBA_MDB_EATTR_UNSPEC,
 200         MDBA_MDB_EATTR_TIMER,
 201         __MDBA_MDB_EATTR_MAX
 202 };
 203 #define MDBA_MDB_EATTR_MAX (__MDBA_MDB_EATTR_MAX - 1)
 204
 205 /* multicast router types */
 206 enum {
 207         MDB_RTR_TYPE_DISABLED,
 208         MDB_RTR_TYPE_TEMP_QUERY,
 209         MDB_RTR_TYPE_PERM,
 210         MDB_RTR_TYPE_TEMP
 211 };
 212
 213 enum {
 214         MDBA_ROUTER_UNSPEC,
 215         MDBA_ROUTER_PORT,
 216         __MDBA_ROUTER_MAX,
 217 };
 218 #define MDBA_ROUTER_MAX (__MDBA_ROUTER_MAX - 1)
 219
 220 /* router port attributes */
 221 enum {
 222         MDBA_ROUTER_PATTR_UNSPEC,
 223         MDBA_ROUTER_PATTR_TIMER,
 224         MDBA_ROUTER_PATTR_TYPE,
 225         __MDBA_ROUTER_PATTR_MAX
 226 };
 227 #define MDBA_ROUTER_PATTR_MAX (__MDBA_ROUTER_PATTR_MAX - 1)
 228
 229 struct br_port_msg {
 230         __u8  family;
 231         __u32 ifindex;
 232 };
 233
 234 struct br_mdb_entry {
 235         __u32 ifindex;
 236 #define MDB_TEMPORARY 0
 237 #define MDB_PERMANENT 1
 238         __u8 state;
 239 #define MDB_FLAGS_OFFLOAD       (1 << 0)
 240         __u8 flags;
 241         __u16 vid;
 242         struct {
 243                 union {
 244                         __be32  ip4;
 245                         struct in6_addr ip6;
 246                 } u;
 247                 __be16          proto;
 248         } addr;
 249 };
 250
 251 enum {
 252         MDBA_SET_ENTRY_UNSPEC,
 253         MDBA_SET_ENTRY,
 254         __MDBA_SET_ENTRY_MAX,
 255 };
 256 #define MDBA_SET_ENTRY_MAX (__MDBA_SET_ENTRY_MAX - 1)
 257
 258 /* Embedded inside LINK_XSTATS_TYPE_BRIDGE */
 259 enum {
 260         BRIDGE_XSTATS_UNSPEC,
 261         BRIDGE_XSTATS_VLAN,
 262         BRIDGE_XSTATS_MCAST,
 263         BRIDGE_XSTATS_PAD,
 264         __BRIDGE_XSTATS_MAX
 265 };
 266 #define BRIDGE_XSTATS_MAX (__BRIDGE_XSTATS_MAX - 1)
 267
 268 enum {
 269         BR_MCAST_DIR_RX,
 270         BR_MCAST_DIR_TX,
 271         BR_MCAST_DIR_SIZE
 272 };
 273
 274 /* IGMP/MLD statistics */
 275 struct br_mcast_stats {
 276         __u64 igmp_v1queries[BR_MCAST_DIR_SIZE];
 277         __u64 igmp_v2queries[BR_MCAST_DIR_SIZE];
 278         __u64 igmp_v3queries[BR_MCAST_DIR_SIZE];
 279         __u64 igmp_leaves[BR_MCAST_DIR_SIZE];
 280         __u64 igmp_v1reports[BR_MCAST_DIR_SIZE];
 281         __u64 igmp_v2reports[BR_MCAST_DIR_SIZE];
 282         __u64 igmp_v3reports[BR_MCAST_DIR_SIZE];
 283         __u64 igmp_parse_errors;
 284
 285         __u64 mld_v1queries[BR_MCAST_DIR_SIZE];
 286         __u64 mld_v2queries[BR_MCAST_DIR_SIZE];
 287         __u64 mld_leaves[BR_MCAST_DIR_SIZE];
 288         __u64 mld_v1reports[BR_MCAST_DIR_SIZE];
 289         __u64 mld_v2reports[BR_MCAST_DIR_SIZE];
 290         __u64 mld_parse_errors;
 291
 292         __u64 mcast_bytes[BR_MCAST_DIR_SIZE];
 293         __u64 mcast_packets[BR_MCAST_DIR_SIZE];
 294 };
 295 #endif /* _LINUX_IF_BRIDGE_H */