/*
   *	Linux ethernet bridge
   *
   *	Authors:
   *	Lennert Buytenhek		<buytenh@gnu.org>
   *
   *	This program is free software; you can redistribute it and/or
   *	modify it under the terms of the GNU General Public License
   *	as published by the Free Software Foundation; either version
   *	2 of the License, or (at your option) any later version.
   */
  
  #ifndef _UAPI_LINUX_IF_BRIDGE_H
  #define _UAPI_LINUX_IF_BRIDGE_H
  
  #include <linux/types.h>

  #include <linux/if_ether.h>

  #include <linux/in6.h>

  
  #define SYSFS_BRIDGE_ATTR	"bridge"
  #define SYSFS_BRIDGE_FDB	"brforward"
  #define SYSFS_BRIDGE_PORT_SUBDIR "brif"
  #define SYSFS_BRIDGE_PORT_ATTR	"brport"
  #define SYSFS_BRIDGE_PORT_LINK	"bridge"
  
  #define BRCTL_VERSION 1
  
  #define BRCTL_GET_VERSION 0
  #define BRCTL_GET_BRIDGES 1
  #define BRCTL_ADD_BRIDGE 2
  #define BRCTL_DEL_BRIDGE 3
  #define BRCTL_ADD_IF 4
  #define BRCTL_DEL_IF 5
  #define BRCTL_GET_BRIDGE_INFO 6
  #define BRCTL_GET_PORT_LIST 7
  #define BRCTL_SET_BRIDGE_FORWARD_DELAY 8
  #define BRCTL_SET_BRIDGE_HELLO_TIME 9
  #define BRCTL_SET_BRIDGE_MAX_AGE 10
  #define BRCTL_SET_AGEING_TIME 11
  #define BRCTL_SET_GC_INTERVAL 12
  #define BRCTL_GET_PORT_INFO 13
  #define BRCTL_SET_BRIDGE_STP_STATE 14
  #define BRCTL_SET_BRIDGE_PRIORITY 15
  #define BRCTL_SET_PORT_PRIORITY 16
  #define BRCTL_SET_PATH_COST 17
  #define BRCTL_GET_FDB_ENTRIES 18
  
  #define BR_STATE_DISABLED 0
  #define BR_STATE_LISTENING 1
  #define BR_STATE_LEARNING 2
  #define BR_STATE_FORWARDING 3
  #define BR_STATE_BLOCKING 4
  
  struct __bridge_info {
  	__u64 designated_root;
  	__u64 bridge_id;
  	__u32 root_path_cost;
  	__u32 max_age;
  	__u32 hello_time;
  	__u32 forward_delay;
  	__u32 bridge_max_age;
  	__u32 bridge_hello_time;
  	__u32 bridge_forward_delay;
  	__u8 topology_change;
  	__u8 topology_change_detected;
  	__u8 root_port;
  	__u8 stp_enabled;
  	__u32 ageing_time;
  	__u32 gc_interval;
  	__u32 hello_timer_value;
  	__u32 tcn_timer_value;
  	__u32 topology_change_timer_value;
  	__u32 gc_timer_value;
  };
  
  struct __port_info {
  	__u64 designated_root;
  	__u64 designated_bridge;
  	__u16 port_id;
  	__u16 designated_port;
  	__u32 path_cost;
  	__u32 designated_cost;
  	__u8 state;
  	__u8 top_change_ack;
  	__u8 config_pending;
  	__u8 unused0;
  	__u32 message_age_timer_value;
  	__u32 forward_delay_timer_value;
  	__u32 hold_timer_value;
  };
  
  struct __fdb_entry {

  	__u8 mac_addr[ETH_ALEN];

  	__u8 port_no;
  	__u8 is_local;
  	__u32 ageing_timer_value;
  	__u8 port_hi;
  	__u8 pad0;
  	__u16 unused;
  };

  /* Bridge Flags */
  #define BRIDGE_FLAGS_MASTER	1	/* Bridge command to/from master */
  #define BRIDGE_FLAGS_SELF	2	/* Bridge command to/from lowerdev */

  #define BRIDGE_MODE_VEB		0	/* Default loopback mode */
  #define BRIDGE_MODE_VEPA	1	/* 802.1Qbg defined VEPA mode */

  #define BRIDGE_MODE_UNDEF	0xFFFF  /* mode undefined */

  
  /* Bridge management nested attributes
   * [IFLA_AF_SPEC] = {
   *     [IFLA_BRIDGE_FLAGS]
   *     [IFLA_BRIDGE_MODE]

   *     [IFLA_BRIDGE_VLAN_INFO]

   * }
   */
  enum {
  	IFLA_BRIDGE_FLAGS,
  	IFLA_BRIDGE_MODE,

  	IFLA_BRIDGE_VLAN_INFO,

  	__IFLA_BRIDGE_MAX,
  };
  #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)

  #define BRIDGE_VLAN_INFO_MASTER	(1<<0)	/* Operate on Bridge device as well */

  #define BRIDGE_VLAN_INFO_PVID	(1<<1)	/* VLAN is PVID, ingress untagged */

  #define BRIDGE_VLAN_INFO_UNTAGGED	(1<<2)	/* VLAN egresses untagged */

  #define BRIDGE_VLAN_INFO_RANGE_BEGIN	(1<<3) /* VLAN is start of vlan range */
  #define BRIDGE_VLAN_INFO_RANGE_END	(1<<4) /* VLAN is end of vlan range */

  #define BRIDGE_VLAN_INFO_BRENTRY	(1<<5) /* Global bridge VLAN entry */

  
  struct bridge_vlan_info {

  	__u16 flags;
  	__u16 vid;

  };

  struct bridge_vlan_xstats {
  	__u64 rx_bytes;
  	__u64 rx_packets;
  	__u64 tx_bytes;
  	__u64 tx_packets;
  	__u16 vid;

  	__u16 flags;

  	__u32 pad2;
  };

  /* Bridge multicast database attributes
   * [MDBA_MDB] = {
   *     [MDBA_MDB_ENTRY] = {

   *         [MDBA_MDB_ENTRY_INFO] {
   *		struct br_mdb_entry
   *		[MDBA_MDB_EATTR attributes]
   *         }

   *     }
   * }
   * [MDBA_ROUTER] = {

   *    [MDBA_ROUTER_PORT] = {
   *        u32 ifindex
   *        [MDBA_ROUTER_PATTR attributes]
   *    }

   * }
   */
  enum {
  	MDBA_UNSPEC,
  	MDBA_MDB,
  	MDBA_ROUTER,
  	__MDBA_MAX,
  };
  #define MDBA_MAX (__MDBA_MAX - 1)
  
  enum {
  	MDBA_MDB_UNSPEC,
  	MDBA_MDB_ENTRY,
  	__MDBA_MDB_MAX,
  };
  #define MDBA_MDB_MAX (__MDBA_MDB_MAX - 1)
  
  enum {
  	MDBA_MDB_ENTRY_UNSPEC,
  	MDBA_MDB_ENTRY_INFO,
  	__MDBA_MDB_ENTRY_MAX,
  };
  #define MDBA_MDB_ENTRY_MAX (__MDBA_MDB_ENTRY_MAX - 1)

  /* per mdb entry additional attributes */
  enum {
  	MDBA_MDB_EATTR_UNSPEC,
  	MDBA_MDB_EATTR_TIMER,
  	__MDBA_MDB_EATTR_MAX
  };
  #define MDBA_MDB_EATTR_MAX (__MDBA_MDB_EATTR_MAX - 1)

  /* multicast router types */
  enum {
  	MDB_RTR_TYPE_DISABLED,
  	MDB_RTR_TYPE_TEMP_QUERY,
  	MDB_RTR_TYPE_PERM,

  	MDB_RTR_TYPE_TEMP

  };

  enum {
  	MDBA_ROUTER_UNSPEC,
  	MDBA_ROUTER_PORT,
  	__MDBA_ROUTER_MAX,
  };
  #define MDBA_ROUTER_MAX (__MDBA_ROUTER_MAX - 1)

  /* router port attributes */
  enum {
  	MDBA_ROUTER_PATTR_UNSPEC,
  	MDBA_ROUTER_PATTR_TIMER,
  	MDBA_ROUTER_PATTR_TYPE,
  	__MDBA_ROUTER_PATTR_MAX
  };
  #define MDBA_ROUTER_PATTR_MAX (__MDBA_ROUTER_PATTR_MAX - 1)

  struct br_port_msg {

  	__u8  family;

  	__u32 ifindex;
  };
  
  struct br_mdb_entry {
  	__u32 ifindex;

  #define MDB_TEMPORARY 0
  #define MDB_PERMANENT 1
  	__u8 state;

  #define MDB_FLAGS_OFFLOAD	(1 << 0)
  	__u8 flags;

  	__u16 vid;

  	struct {
  		union {
  			__be32	ip4;
  			struct in6_addr ip6;
  		} u;
  		__be16		proto;
  	} addr;
  };

  enum {
  	MDBA_SET_ENTRY_UNSPEC,
  	MDBA_SET_ENTRY,
  	__MDBA_SET_ENTRY_MAX,
  };
  #define MDBA_SET_ENTRY_MAX (__MDBA_SET_ENTRY_MAX - 1)

  /* Embedded inside LINK_XSTATS_TYPE_BRIDGE */
  enum {
  	BRIDGE_XSTATS_UNSPEC,
  	BRIDGE_XSTATS_VLAN,

  	BRIDGE_XSTATS_MCAST,
  	BRIDGE_XSTATS_PAD,

  	__BRIDGE_XSTATS_MAX
  };
  #define BRIDGE_XSTATS_MAX (__BRIDGE_XSTATS_MAX - 1)

  enum {
  	BR_MCAST_DIR_RX,
  	BR_MCAST_DIR_TX,
  	BR_MCAST_DIR_SIZE
  };
  
  /* IGMP/MLD statistics */
  struct br_mcast_stats {

  	__u64 igmp_v1queries[BR_MCAST_DIR_SIZE];
  	__u64 igmp_v2queries[BR_MCAST_DIR_SIZE];
  	__u64 igmp_v3queries[BR_MCAST_DIR_SIZE];

  	__u64 igmp_leaves[BR_MCAST_DIR_SIZE];
  	__u64 igmp_v1reports[BR_MCAST_DIR_SIZE];
  	__u64 igmp_v2reports[BR_MCAST_DIR_SIZE];
  	__u64 igmp_v3reports[BR_MCAST_DIR_SIZE];
  	__u64 igmp_parse_errors;

  	__u64 mld_v1queries[BR_MCAST_DIR_SIZE];
  	__u64 mld_v2queries[BR_MCAST_DIR_SIZE];

  	__u64 mld_leaves[BR_MCAST_DIR_SIZE];
  	__u64 mld_v1reports[BR_MCAST_DIR_SIZE];
  	__u64 mld_v2reports[BR_MCAST_DIR_SIZE];
  	__u64 mld_parse_errors;
  
  	__u64 mcast_bytes[BR_MCAST_DIR_SIZE];
  	__u64 mcast_packets[BR_MCAST_DIR_SIZE];
  };

  #endif /* _UAPI_LINUX_IF_BRIDGE_H */