text: /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  #ifndef _LINUX_NF_TABLES_H
  #define _LINUX_NF_TABLES_H
  
  #define NFT_NAME_MAXLEN		256
  #define NFT_TABLE_MAXNAMELEN	NFT_NAME_MAXLEN
  #define NFT_CHAIN_MAXNAMELEN	NFT_NAME_MAXLEN
  #define NFT_SET_MAXNAMELEN	NFT_NAME_MAXLEN
  #define NFT_OBJ_MAXNAMELEN	NFT_NAME_MAXLEN
  #define NFT_USERDATA_MAXLEN	256
  
  /**
   * enum nft_registers - nf_tables registers
   *
   * nf_tables used to have five registers: a verdict register and four data
   * registers of size 16. The data registers have been changed to 16 registers
   * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
   * map to areas of size 16, the 4 byte registers are addressed using
   * NFT_REG32_00 - NFT_REG32_15.
   */
  enum nft_registers {
  	NFT_REG_VERDICT,
  	NFT_REG_1,
  	NFT_REG_2,
  	NFT_REG_3,
  	NFT_REG_4,
  	__NFT_REG_MAX,
  
  	NFT_REG32_00	= 8,
  	NFT_REG32_01,
  	NFT_REG32_02,
  	NFT_REG32_03,
  	NFT_REG32_04,
  	NFT_REG32_05,
  	NFT_REG32_06,
  	NFT_REG32_07,
  	NFT_REG32_08,
  	NFT_REG32_09,
  	NFT_REG32_10,
  	NFT_REG32_11,
  	NFT_REG32_12,
  	NFT_REG32_13,
  	NFT_REG32_14,
  	NFT_REG32_15,
  };
  #define NFT_REG_MAX	(__NFT_REG_MAX - 1)
  
  #define NFT_REG_SIZE	16
  #define NFT_REG32_SIZE	4
  
  /**
   * enum nft_verdicts - nf_tables internal verdicts
   *
   * @NFT_CONTINUE: continue evaluation of the current rule
   * @NFT_BREAK: terminate evaluation of the current rule
   * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
   * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
   * @NFT_RETURN: return to the topmost chain on the jump stack
   *
   * The nf_tables verdicts share their numeric space with the netfilter verdicts.
   */
  enum nft_verdicts {
  	NFT_CONTINUE	= -1,
  	NFT_BREAK	= -2,
  	NFT_JUMP	= -3,
  	NFT_GOTO	= -4,
  	NFT_RETURN	= -5,
  };
  
  /**
   * enum nf_tables_msg_types - nf_tables netlink message types
   *
   * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
   * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
   * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
   * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
   * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
   * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
   * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
   * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
   * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
   * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
   * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
   * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
   * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
   * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
   * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
   * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
   * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
   * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
   * @NFT_MSG_NEWOBJ: create a stateful object (enum nft_obj_attributes)
   * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
   * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
   * @NFT_MSG_GETOBJ_RESET: get and reset a stateful object (enum nft_obj_attributes)
   * @NFT_MSG_NEWFLOWTABLE: add new flow table (enum nft_flowtable_attributes)
   * @NFT_MSG_GETFLOWTABLE: get flow table (enum nft_flowtable_attributes)
   * @NFT_MSG_DELFLOWTABLE: delete flow table (enum nft_flowtable_attributes)
   */
  enum nf_tables_msg_types {
  	NFT_MSG_NEWTABLE,
  	NFT_MSG_GETTABLE,
  	NFT_MSG_DELTABLE,
  	NFT_MSG_NEWCHAIN,
  	NFT_MSG_GETCHAIN,
  	NFT_MSG_DELCHAIN,
  	NFT_MSG_NEWRULE,
  	NFT_MSG_GETRULE,
  	NFT_MSG_DELRULE,
  	NFT_MSG_NEWSET,
  	NFT_MSG_GETSET,
  	NFT_MSG_DELSET,
  	NFT_MSG_NEWSETELEM,
  	NFT_MSG_GETSETELEM,
  	NFT_MSG_DELSETELEM,
  	NFT_MSG_NEWGEN,
  	NFT_MSG_GETGEN,
  	NFT_MSG_TRACE,
  	NFT_MSG_NEWOBJ,
  	NFT_MSG_GETOBJ,
  	NFT_MSG_DELOBJ,
  	NFT_MSG_GETOBJ_RESET,
  	NFT_MSG_NEWFLOWTABLE,
  	NFT_MSG_GETFLOWTABLE,
  	NFT_MSG_DELFLOWTABLE,
  	NFT_MSG_MAX,
  };
  
  /**
   * enum nft_list_attributes - nf_tables generic list netlink attributes
   *
   * @NFTA_LIST_ELEM: list element (NLA_NESTED)
   */
  enum nft_list_attributes {
  	NFTA_LIST_UNPEC,
  	NFTA_LIST_ELEM,
  	__NFTA_LIST_MAX
  };
  #define NFTA_LIST_MAX		(__NFTA_LIST_MAX - 1)
  
  /**
   * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
   *
   * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
   * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
   * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
   */
  enum nft_hook_attributes {
  	NFTA_HOOK_UNSPEC,
  	NFTA_HOOK_HOOKNUM,
  	NFTA_HOOK_PRIORITY,
  	NFTA_HOOK_DEV,
  	__NFTA_HOOK_MAX
  };
  #define NFTA_HOOK_MAX		(__NFTA_HOOK_MAX - 1)
  
  /**
   * enum nft_table_flags - nf_tables table flags
   *
   * @NFT_TABLE_F_DORMANT: this table is not active
   */
  enum nft_table_flags {
  	NFT_TABLE_F_DORMANT	= 0x1,
  };
  
  /**
   * enum nft_table_attributes - nf_tables table netlink attributes
   *
   * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
   * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
   * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
   */
  enum nft_table_attributes {
  	NFTA_TABLE_UNSPEC,
  	NFTA_TABLE_NAME,
  	NFTA_TABLE_FLAGS,
  	NFTA_TABLE_USE,
  	NFTA_TABLE_HANDLE,
  	NFTA_TABLE_PAD,
  	__NFTA_TABLE_MAX
  };
  #define NFTA_TABLE_MAX		(__NFTA_TABLE_MAX - 1)
  
  /**
   * enum nft_chain_attributes - nf_tables chain netlink attributes
   *
   * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
   * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
   * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
   * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
   * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
   * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
   * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
   * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
   */
  enum nft_chain_attributes {
  	NFTA_CHAIN_UNSPEC,
  	NFTA_CHAIN_TABLE,
  	NFTA_CHAIN_HANDLE,
  	NFTA_CHAIN_NAME,
  	NFTA_CHAIN_HOOK,
  	NFTA_CHAIN_POLICY,
  	NFTA_CHAIN_USE,
  	NFTA_CHAIN_TYPE,
  	NFTA_CHAIN_COUNTERS,
  	NFTA_CHAIN_PAD,
  	__NFTA_CHAIN_MAX
  };
  #define NFTA_CHAIN_MAX		(__NFTA_CHAIN_MAX - 1)
  
  /**
   * enum nft_rule_attributes - nf_tables rule netlink attributes
   *
   * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
   * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
   * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
   * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
   * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
   * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
   * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
   * @NFTA_RULE_ID: uniquely identifies a rule in a transaction (NLA_U32)
   */
  enum nft_rule_attributes {
  	NFTA_RULE_UNSPEC,
  	NFTA_RULE_TABLE,
  	NFTA_RULE_CHAIN,
  	NFTA_RULE_HANDLE,
  	NFTA_RULE_EXPRESSIONS,
  	NFTA_RULE_COMPAT,
  	NFTA_RULE_POSITION,
  	NFTA_RULE_USERDATA,
  	NFTA_RULE_PAD,
  	NFTA_RULE_ID,
  	__NFTA_RULE_MAX
  };
  #define NFTA_RULE_MAX		(__NFTA_RULE_MAX - 1)
  
  /**
   * enum nft_rule_compat_flags - nf_tables rule compat flags
   *
   * @NFT_RULE_COMPAT_F_INV: invert the check result
   */
  enum nft_rule_compat_flags {
  	NFT_RULE_COMPAT_F_INV	= (1 << 1),
  	NFT_RULE_COMPAT_F_MASK	= NFT_RULE_COMPAT_F_INV,
  };
  
  /**
   * enum nft_rule_compat_attributes - nf_tables rule compat attributes
   *
   * @NFTA_RULE_COMPAT_PROTO: numeric value of handled protocol (NLA_U32)
   * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
   */
  enum nft_rule_compat_attributes {
  	NFTA_RULE_COMPAT_UNSPEC,
  	NFTA_RULE_COMPAT_PROTO,
  	NFTA_RULE_COMPAT_FLAGS,
  	__NFTA_RULE_COMPAT_MAX
  };
  #define NFTA_RULE_COMPAT_MAX	(__NFTA_RULE_COMPAT_MAX - 1)
  
  /**
   * enum nft_set_flags - nf_tables set flags
   *
   * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
   * @NFT_SET_CONSTANT: set contents may not change while bound
   * @NFT_SET_INTERVAL: set contains intervals
   * @NFT_SET_MAP: set is used as a dictionary
   * @NFT_SET_TIMEOUT: set uses timeouts
   * @NFT_SET_EVAL: set contains expressions for evaluation
   * @NFT_SET_OBJECT: set contains stateful objects
   */
  enum nft_set_flags {
  	NFT_SET_ANONYMOUS		= 0x1,
  	NFT_SET_CONSTANT		= 0x2,
  	NFT_SET_INTERVAL		= 0x4,
  	NFT_SET_MAP			= 0x8,
  	NFT_SET_TIMEOUT			= 0x10,
  	NFT_SET_EVAL			= 0x20,
  	NFT_SET_OBJECT			= 0x40,
  };
  
  /**
   * enum nft_set_policies - set selection policy
   *
   * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
   * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
   */
  enum nft_set_policies {
  	NFT_SET_POL_PERFORMANCE,
  	NFT_SET_POL_MEMORY,
  };
  
  /**
   * enum nft_set_desc_attributes - set element description
   *
   * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
   */
  enum nft_set_desc_attributes {
  	NFTA_SET_DESC_UNSPEC,
  	NFTA_SET_DESC_SIZE,
  	__NFTA_SET_DESC_MAX
  };
  #define NFTA_SET_DESC_MAX	(__NFTA_SET_DESC_MAX - 1)
  
  /**
   * enum nft_set_attributes - nf_tables set netlink attributes
   *
   * @NFTA_SET_TABLE: table name (NLA_STRING)
   * @NFTA_SET_NAME: set name (NLA_STRING)
   * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
   * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
   * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
   * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
   * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
   * @NFTA_SET_POLICY: selection policy (NLA_U32)
   * @NFTA_SET_DESC: set description (NLA_NESTED)
   * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
   * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
   * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
   * @NFTA_SET_USERDATA: user data (NLA_BINARY)
   * @NFTA_SET_OBJ_TYPE: stateful object type (NLA_U32: NFT_OBJECT_*)
   * @NFTA_SET_HANDLE: set handle (NLA_U64)
   */
  enum nft_set_attributes {
  	NFTA_SET_UNSPEC,
  	NFTA_SET_TABLE,
  	NFTA_SET_NAME,
  	NFTA_SET_FLAGS,
  	NFTA_SET_KEY_TYPE,
  	NFTA_SET_KEY_LEN,
  	NFTA_SET_DATA_TYPE,
  	NFTA_SET_DATA_LEN,
  	NFTA_SET_POLICY,
  	NFTA_SET_DESC,
  	NFTA_SET_ID,
  	NFTA_SET_TIMEOUT,
  	NFTA_SET_GC_INTERVAL,
  	NFTA_SET_USERDATA,
  	NFTA_SET_PAD,
  	NFTA_SET_OBJ_TYPE,
  	NFTA_SET_HANDLE,
  	__NFTA_SET_MAX
  };
  #define NFTA_SET_MAX		(__NFTA_SET_MAX - 1)
  
  /**
   * enum nft_set_elem_flags - nf_tables set element flags
   *
   * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
   */
  enum nft_set_elem_flags {
  	NFT_SET_ELEM_INTERVAL_END	= 0x1,
  };
  
  /**
   * enum nft_set_elem_attributes - nf_tables set element netlink attributes
   *
   * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
   * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
   * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
   * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
   * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
   * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
   * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
   * @NFTA_SET_ELEM_OBJREF: stateful object reference (NLA_STRING)
   */
  enum nft_set_elem_attributes {
  	NFTA_SET_ELEM_UNSPEC,
  	NFTA_SET_ELEM_KEY,
  	NFTA_SET_ELEM_DATA,
  	NFTA_SET_ELEM_FLAGS,
  	NFTA_SET_ELEM_TIMEOUT,
  	NFTA_SET_ELEM_EXPIRATION,
  	NFTA_SET_ELEM_USERDATA,
  	NFTA_SET_ELEM_EXPR,
  	NFTA_SET_ELEM_PAD,
  	NFTA_SET_ELEM_OBJREF,
  	__NFTA_SET_ELEM_MAX
  };
  #define NFTA_SET_ELEM_MAX	(__NFTA_SET_ELEM_MAX - 1)
  
  /**
   * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
   *
   * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
   * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
   * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
   * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
   */
  enum nft_set_elem_list_attributes {
  	NFTA_SET_ELEM_LIST_UNSPEC,
  	NFTA_SET_ELEM_LIST_TABLE,
  	NFTA_SET_ELEM_LIST_SET,
  	NFTA_SET_ELEM_LIST_ELEMENTS,
  	NFTA_SET_ELEM_LIST_SET_ID,
  	__NFTA_SET_ELEM_LIST_MAX
  };
  #define NFTA_SET_ELEM_LIST_MAX	(__NFTA_SET_ELEM_LIST_MAX - 1)
  
  /**
   * enum nft_data_types - nf_tables data types
   *
   * @NFT_DATA_VALUE: generic data
   * @NFT_DATA_VERDICT: netfilter verdict
   *
   * The type of data is usually determined by the kernel directly and is not
   * explicitly specified by userspace. The only difference are sets, where
   * userspace specifies the key and mapping data types.
   *
   * The values 0xffffff00-0xffffffff are reserved for internally used types.
   * The remaining range can be freely used by userspace to encode types, all
   * values are equivalent to NFT_DATA_VALUE.
   */
  enum nft_data_types {
  	NFT_DATA_VALUE,
  	NFT_DATA_VERDICT	= 0xffffff00U,
  };
  
  #define NFT_DATA_RESERVED_MASK	0xffffff00U
  
  /**
   * enum nft_data_attributes - nf_tables data netlink attributes
   *
   * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
   * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
   */
  enum nft_data_attributes {
  	NFTA_DATA_UNSPEC,
  	NFTA_DATA_VALUE,
  	NFTA_DATA_VERDICT,
  	__NFTA_DATA_MAX
  };
  #define NFTA_DATA_MAX		(__NFTA_DATA_MAX - 1)
  
  /* Maximum length of a value */
  #define NFT_DATA_VALUE_MAXLEN	64
  
  /**
   * enum nft_verdict_attributes - nf_tables verdict netlink attributes
   *
   * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
   * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
   */
  enum nft_verdict_attributes {
  	NFTA_VERDICT_UNSPEC,
  	NFTA_VERDICT_CODE,
  	NFTA_VERDICT_CHAIN,
  	__NFTA_VERDICT_MAX
  };
  #define NFTA_VERDICT_MAX	(__NFTA_VERDICT_MAX - 1)
  
  /**
   * enum nft_expr_attributes - nf_tables expression netlink attributes
   *
   * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
   * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
   */
  enum nft_expr_attributes {
  	NFTA_EXPR_UNSPEC,
  	NFTA_EXPR_NAME,
  	NFTA_EXPR_DATA,
  	__NFTA_EXPR_MAX
  };
  #define NFTA_EXPR_MAX		(__NFTA_EXPR_MAX - 1)
  
  /**
   * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
   *
   * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
   * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
   */
  enum nft_immediate_attributes {
  	NFTA_IMMEDIATE_UNSPEC,
  	NFTA_IMMEDIATE_DREG,
  	NFTA_IMMEDIATE_DATA,
  	__NFTA_IMMEDIATE_MAX
  };
  #define NFTA_IMMEDIATE_MAX	(__NFTA_IMMEDIATE_MAX - 1)
  
  /**
   * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
   *
   * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
   * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
   * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
   * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
   * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
   *
   * The bitwise expression performs the following operation:
   *
   * dreg = (sreg & mask) ^ xor
   *
   * which allow to express all bitwise operations:
   *
   * 		mask	xor
   * NOT:		1	1
   * OR:		0	x
   * XOR:		1	x
   * AND:		x	0
   */
  enum nft_bitwise_attributes {
  	NFTA_BITWISE_UNSPEC,
  	NFTA_BITWISE_SREG,
  	NFTA_BITWISE_DREG,
  	NFTA_BITWISE_LEN,
  	NFTA_BITWISE_MASK,
  	NFTA_BITWISE_XOR,
  	__NFTA_BITWISE_MAX
  };
  #define NFTA_BITWISE_MAX	(__NFTA_BITWISE_MAX - 1)
  
  /**
   * enum nft_byteorder_ops - nf_tables byteorder operators
   *
   * @NFT_BYTEORDER_NTOH: network to host operator
   * @NFT_BYTEORDER_HTON: host to network operator
   */
  enum nft_byteorder_ops {
  	NFT_BYTEORDER_NTOH,
  	NFT_BYTEORDER_HTON,
  };
  
  /**
   * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
   *
   * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
   * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
   * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
   * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
   * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
   */
  enum nft_byteorder_attributes {
  	NFTA_BYTEORDER_UNSPEC,
  	NFTA_BYTEORDER_SREG,
  	NFTA_BYTEORDER_DREG,
  	NFTA_BYTEORDER_OP,
  	NFTA_BYTEORDER_LEN,
  	NFTA_BYTEORDER_SIZE,
  	__NFTA_BYTEORDER_MAX
  };
  #define NFTA_BYTEORDER_MAX	(__NFTA_BYTEORDER_MAX - 1)
  
  /**
   * enum nft_cmp_ops - nf_tables relational operator
   *
   * @NFT_CMP_EQ: equal
   * @NFT_CMP_NEQ: not equal
   * @NFT_CMP_LT: less than
   * @NFT_CMP_LTE: less than or equal to
   * @NFT_CMP_GT: greater than
   * @NFT_CMP_GTE: greater than or equal to
   */
  enum nft_cmp_ops {
  	NFT_CMP_EQ,
  	NFT_CMP_NEQ,
  	NFT_CMP_LT,
  	NFT_CMP_LTE,
  	NFT_CMP_GT,
  	NFT_CMP_GTE,
  };
  
  /**
   * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
   *
   * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
   * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
   * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
   */
  enum nft_cmp_attributes {
  	NFTA_CMP_UNSPEC,
  	NFTA_CMP_SREG,
  	NFTA_CMP_OP,
  	NFTA_CMP_DATA,
  	__NFTA_CMP_MAX
  };
  #define NFTA_CMP_MAX		(__NFTA_CMP_MAX - 1)
  
  /**
   * enum nft_range_ops - nf_tables range operator
   *
   * @NFT_RANGE_EQ: equal
   * @NFT_RANGE_NEQ: not equal
   */
  enum nft_range_ops {
  	NFT_RANGE_EQ,
  	NFT_RANGE_NEQ,
  };
  
  /**
   * enum nft_range_attributes - nf_tables range expression netlink attributes
   *
   * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
   * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
   * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
   * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
   */
  enum nft_range_attributes {
  	NFTA_RANGE_UNSPEC,
  	NFTA_RANGE_SREG,
  	NFTA_RANGE_OP,
  	NFTA_RANGE_FROM_DATA,
  	NFTA_RANGE_TO_DATA,
  	__NFTA_RANGE_MAX
  };
  #define NFTA_RANGE_MAX		(__NFTA_RANGE_MAX - 1)
  
  enum nft_lookup_flags {
  	NFT_LOOKUP_F_INV = (1 << 0),
  };
  
  /**
   * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
   *
   * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
   * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
   * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
   * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
   * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
   */
  enum nft_lookup_attributes {
  	NFTA_LOOKUP_UNSPEC,
  	NFTA_LOOKUP_SET,
  	NFTA_LOOKUP_SREG,
  	NFTA_LOOKUP_DREG,
  	NFTA_LOOKUP_SET_ID,
  	NFTA_LOOKUP_FLAGS,
  	__NFTA_LOOKUP_MAX
  };
  #define NFTA_LOOKUP_MAX		(__NFTA_LOOKUP_MAX - 1)
  
  enum nft_dynset_ops {
  	NFT_DYNSET_OP_ADD,
  	NFT_DYNSET_OP_UPDATE,
  };
  
  enum nft_dynset_flags {
  	NFT_DYNSET_F_INV	= (1 << 0),
  };
  
  /**
   * enum nft_dynset_attributes - dynset expression attributes
   *
   * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
   * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
   * @NFTA_DYNSET_OP: operation (NLA_U32)
   * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
   * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
   * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
   * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
   * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
   */
  enum nft_dynset_attributes {
  	NFTA_DYNSET_UNSPEC,
  	NFTA_DYNSET_SET_NAME,
  	NFTA_DYNSET_SET_ID,
  	NFTA_DYNSET_OP,
  	NFTA_DYNSET_SREG_KEY,
  	NFTA_DYNSET_SREG_DATA,
  	NFTA_DYNSET_TIMEOUT,
  	NFTA_DYNSET_EXPR,
  	NFTA_DYNSET_PAD,
  	NFTA_DYNSET_FLAGS,
  	__NFTA_DYNSET_MAX,
  };
  #define NFTA_DYNSET_MAX		(__NFTA_DYNSET_MAX - 1)
  
  /**
   * enum nft_payload_bases - nf_tables payload expression offset bases
   *
   * @NFT_PAYLOAD_LL_HEADER: link layer header
   * @NFT_PAYLOAD_NETWORK_HEADER: network header
   * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
   */
  enum nft_payload_bases {
  	NFT_PAYLOAD_LL_HEADER,
  	NFT_PAYLOAD_NETWORK_HEADER,
  	NFT_PAYLOAD_TRANSPORT_HEADER,
  };
  
  /**
   * enum nft_payload_csum_types - nf_tables payload expression checksum types
   *
   * @NFT_PAYLOAD_CSUM_NONE: no checksumming
   * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
   */
  enum nft_payload_csum_types {
  	NFT_PAYLOAD_CSUM_NONE,
  	NFT_PAYLOAD_CSUM_INET,
  };
  
  enum nft_payload_csum_flags {
  	NFT_PAYLOAD_L4CSUM_PSEUDOHDR = (1 << 0),
  };
  
  /**
   * enum nft_payload_attributes - nf_tables payload expression netlink attributes
   *
   * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
   * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
   * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
   * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
   * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
   * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
   * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
   * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
   */
  enum nft_payload_attributes {
  	NFTA_PAYLOAD_UNSPEC,
  	NFTA_PAYLOAD_DREG,
  	NFTA_PAYLOAD_BASE,
  	NFTA_PAYLOAD_OFFSET,
  	NFTA_PAYLOAD_LEN,
  	NFTA_PAYLOAD_SREG,
  	NFTA_PAYLOAD_CSUM_TYPE,
  	NFTA_PAYLOAD_CSUM_OFFSET,
  	NFTA_PAYLOAD_CSUM_FLAGS,
  	__NFTA_PAYLOAD_MAX
  };
  #define NFTA_PAYLOAD_MAX	(__NFTA_PAYLOAD_MAX - 1)
  
  enum nft_exthdr_flags {
  	NFT_EXTHDR_F_PRESENT = (1 << 0),
  };
  
  /**
   * enum nft_exthdr_op - nf_tables match options
   *
   * @NFT_EXTHDR_OP_IPV6: match against ipv6 extension headers
   * @NFT_EXTHDR_OP_TCP: match against tcp options
   */
  enum nft_exthdr_op {
  	NFT_EXTHDR_OP_IPV6,
  	NFT_EXTHDR_OP_TCPOPT,
  	__NFT_EXTHDR_OP_MAX
  };
  #define NFT_EXTHDR_OP_MAX	(__NFT_EXTHDR_OP_MAX - 1)
  
  /**
   * enum nft_exthdr_attributes - nf_tables extension header expression netlink attributes
   *
   * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
   * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
   * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
   * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
   * @NFTA_EXTHDR_FLAGS: extension header flags (NLA_U32)
   * @NFTA_EXTHDR_OP: option match type (NLA_U32)
   * @NFTA_EXTHDR_SREG: option match type (NLA_U32)
   */
  enum nft_exthdr_attributes {
  	NFTA_EXTHDR_UNSPEC,
  	NFTA_EXTHDR_DREG,
  	NFTA_EXTHDR_TYPE,
  	NFTA_EXTHDR_OFFSET,
  	NFTA_EXTHDR_LEN,
  	NFTA_EXTHDR_FLAGS,
  	NFTA_EXTHDR_OP,
  	NFTA_EXTHDR_SREG,
  	__NFTA_EXTHDR_MAX
  };
  #define NFTA_EXTHDR_MAX		(__NFTA_EXTHDR_MAX - 1)
  
  /**
   * enum nft_meta_keys - nf_tables meta expression keys
   *
   * @NFT_META_LEN: packet length (skb->len)
   * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
   * @NFT_META_PRIORITY: packet priority (skb->priority)
   * @NFT_META_MARK: packet mark (skb->mark)
   * @NFT_META_IIF: packet input interface index (dev->ifindex)
   * @NFT_META_OIF: packet output interface index (dev->ifindex)
   * @NFT_META_IIFNAME: packet input interface name (dev->name)
   * @NFT_META_OIFNAME: packet output interface name (dev->name)
   * @NFT_META_IIFTYPE: packet input interface type (dev->type)
   * @NFT_META_OIFTYPE: packet output interface type (dev->type)
   * @NFT_META_SKUID: originating socket UID (fsuid)
   * @NFT_META_SKGID: originating socket GID (fsgid)
   * @NFT_META_NFTRACE: packet nftrace bit
   * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
   * @NFT_META_SECMARK: packet secmark (skb->secmark)
   * @NFT_META_NFPROTO: netfilter protocol
   * @NFT_META_L4PROTO: layer 4 protocol number
   * @NFT_META_BRI_IIFNAME: packet input bridge interface name
   * @NFT_META_BRI_OIFNAME: packet output bridge interface name
   * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
   * @NFT_META_CPU: cpu id through smp_processor_id()
   * @NFT_META_IIFGROUP: packet input interface group
   * @NFT_META_OIFGROUP: packet output interface group
   * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
   * @NFT_META_PRANDOM: a 32bit pseudo-random number
   * @NFT_META_SECPATH: boolean, secpath_exists (!!skb->sp)
   */
  enum nft_meta_keys {
  	NFT_META_LEN,
  	NFT_META_PROTOCOL,
  	NFT_META_PRIORITY,
  	NFT_META_MARK,
  	NFT_META_IIF,
  	NFT_META_OIF,
  	NFT_META_IIFNAME,
  	NFT_META_OIFNAME,
  	NFT_META_IIFTYPE,
  	NFT_META_OIFTYPE,
  	NFT_META_SKUID,
  	NFT_META_SKGID,
  	NFT_META_NFTRACE,
  	NFT_META_RTCLASSID,
  	NFT_META_SECMARK,
  	NFT_META_NFPROTO,
  	NFT_META_L4PROTO,
  	NFT_META_BRI_IIFNAME,
  	NFT_META_BRI_OIFNAME,
  	NFT_META_PKTTYPE,
  	NFT_META_CPU,
  	NFT_META_IIFGROUP,
  	NFT_META_OIFGROUP,
  	NFT_META_CGROUP,
  	NFT_META_PRANDOM,
  	NFT_META_SECPATH,
  };
  
  /**
   * enum nft_rt_keys - nf_tables routing expression keys
   *
   * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
   * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
   * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
   * @NFT_RT_TCPMSS: fetch current path tcp mss
   */
  enum nft_rt_keys {
  	NFT_RT_CLASSID,
  	NFT_RT_NEXTHOP4,
  	NFT_RT_NEXTHOP6,
  	NFT_RT_TCPMSS,
  };
  
  /**
   * enum nft_hash_types - nf_tables hash expression types
   *
   * @NFT_HASH_JENKINS: Jenkins Hash
   * @NFT_HASH_SYM: Symmetric Hash
   */
  enum nft_hash_types {
  	NFT_HASH_JENKINS,
  	NFT_HASH_SYM,
  };
  
  /**
   * enum nft_hash_attributes - nf_tables hash expression netlink attributes
   *
   * @NFTA_HASH_SREG: source register (NLA_U32)
   * @NFTA_HASH_DREG: destination register (NLA_U32)
   * @NFTA_HASH_LEN: source data length (NLA_U32)
   * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
   * @NFTA_HASH_SEED: seed value (NLA_U32)
   * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
   * @NFTA_HASH_TYPE: hash operation (NLA_U32: nft_hash_types)
   */
  enum nft_hash_attributes {
  	NFTA_HASH_UNSPEC,
  	NFTA_HASH_SREG,
  	NFTA_HASH_DREG,
  	NFTA_HASH_LEN,
  	NFTA_HASH_MODULUS,
  	NFTA_HASH_SEED,
  	NFTA_HASH_OFFSET,
  	NFTA_HASH_TYPE,
  	__NFTA_HASH_MAX,
  };
  #define NFTA_HASH_MAX	(__NFTA_HASH_MAX - 1)
  
  /**
   * enum nft_meta_attributes - nf_tables meta expression netlink attributes
   *
   * @NFTA_META_DREG: destination register (NLA_U32)
   * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
   * @NFTA_META_SREG: source register (NLA_U32)
   */
  enum nft_meta_attributes {
  	NFTA_META_UNSPEC,
  	NFTA_META_DREG,
  	NFTA_META_KEY,
  	NFTA_META_SREG,
  	__NFTA_META_MAX
  };
  #define NFTA_META_MAX		(__NFTA_META_MAX - 1)
  
  /**
   * enum nft_rt_attributes - nf_tables routing expression netlink attributes
   *
   * @NFTA_RT_DREG: destination register (NLA_U32)
   * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
   */
  enum nft_rt_attributes {
  	NFTA_RT_UNSPEC,
  	NFTA_RT_DREG,
  	NFTA_RT_KEY,
  	__NFTA_RT_MAX
  };
  #define NFTA_RT_MAX		(__NFTA_RT_MAX - 1)
  
  /**
   * enum nft_ct_keys - nf_tables ct expression keys
   *
   * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
   * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
   * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
   * @NFT_CT_MARK: conntrack mark value
   * @NFT_CT_SECMARK: conntrack secmark value
   * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
   * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
   * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
   * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
   * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
   * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
   * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
   * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
   * @NFT_CT_LABELS: conntrack labels
   * @NFT_CT_PKTS: conntrack packets
   * @NFT_CT_BYTES: conntrack bytes
   * @NFT_CT_AVGPKT: conntrack average bytes per packet
   * @NFT_CT_ZONE: conntrack zone
   * @NFT_CT_EVENTMASK: ctnetlink events to be generated for this conntrack
   */
  enum nft_ct_keys {
  	NFT_CT_STATE,
  	NFT_CT_DIRECTION,
  	NFT_CT_STATUS,
  	NFT_CT_MARK,
  	NFT_CT_SECMARK,
  	NFT_CT_EXPIRATION,
  	NFT_CT_HELPER,
  	NFT_CT_L3PROTOCOL,
  	NFT_CT_SRC,
  	NFT_CT_DST,
  	NFT_CT_PROTOCOL,
  	NFT_CT_PROTO_SRC,
  	NFT_CT_PROTO_DST,
  	NFT_CT_LABELS,
  	NFT_CT_PKTS,
  	NFT_CT_BYTES,
  	NFT_CT_AVGPKT,
  	NFT_CT_ZONE,
  	NFT_CT_EVENTMASK,
  };
  
  /**
   * enum nft_ct_attributes - nf_tables ct expression netlink attributes
   *
   * @NFTA_CT_DREG: destination register (NLA_U32)
   * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
   * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
   * @NFTA_CT_SREG: source register (NLA_U32)
   */
  enum nft_ct_attributes {
  	NFTA_CT_UNSPEC,
  	NFTA_CT_DREG,
  	NFTA_CT_KEY,
  	NFTA_CT_DIRECTION,
  	NFTA_CT_SREG,
  	__NFTA_CT_MAX
  };
  #define NFTA_CT_MAX		(__NFTA_CT_MAX - 1)
  
  /**
   * enum nft_flow_attributes - ct offload expression attributes
   * @NFTA_FLOW_TABLE_NAME: flow table name (NLA_STRING)
   */
  enum nft_offload_attributes {
  	NFTA_FLOW_UNSPEC,
  	NFTA_FLOW_TABLE_NAME,
  	__NFTA_FLOW_MAX,
  };
  #define NFTA_FLOW_MAX		(__NFTA_FLOW_MAX - 1)
  
  enum nft_limit_type {
  	NFT_LIMIT_PKTS,
  	NFT_LIMIT_PKT_BYTES
  };
  
  enum nft_limit_flags {
  	NFT_LIMIT_F_INV	= (1 << 0),
  };
  
  /**
   * enum nft_limit_attributes - nf_tables limit expression netlink attributes
   *
   * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
   * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
   * @NFTA_LIMIT_BURST: burst (NLA_U32)
   * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
   * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
   */
  enum nft_limit_attributes {
  	NFTA_LIMIT_UNSPEC,
  	NFTA_LIMIT_RATE,
  	NFTA_LIMIT_UNIT,
  	NFTA_LIMIT_BURST,
  	NFTA_LIMIT_TYPE,
  	NFTA_LIMIT_FLAGS,
  	NFTA_LIMIT_PAD,
  	__NFTA_LIMIT_MAX
  };
  #define NFTA_LIMIT_MAX		(__NFTA_LIMIT_MAX - 1)
  
  /**
   * enum nft_counter_attributes - nf_tables counter expression netlink attributes
   *
   * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
   * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
   */
  enum nft_counter_attributes {
  	NFTA_COUNTER_UNSPEC,
  	NFTA_COUNTER_BYTES,
  	NFTA_COUNTER_PACKETS,
  	NFTA_COUNTER_PAD,
  	__NFTA_COUNTER_MAX
  };
  #define NFTA_COUNTER_MAX	(__NFTA_COUNTER_MAX - 1)
  
  /**
   * enum nft_log_attributes - nf_tables log expression netlink attributes
   *
   * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
   * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
   * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
   * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
   * @NFTA_LOG_LEVEL: log level (NLA_U32)
   * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
   */
  enum nft_log_attributes {
  	NFTA_LOG_UNSPEC,
  	NFTA_LOG_GROUP,
  	NFTA_LOG_PREFIX,
  	NFTA_LOG_SNAPLEN,
  	NFTA_LOG_QTHRESHOLD,
  	NFTA_LOG_LEVEL,
  	NFTA_LOG_FLAGS,
  	__NFTA_LOG_MAX
  };
  #define NFTA_LOG_MAX		(__NFTA_LOG_MAX - 1)
  
  /**
   * enum nft_queue_attributes - nf_tables queue expression netlink attributes
   *
   * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
   * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
   * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
   * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
   */
  enum nft_queue_attributes {
  	NFTA_QUEUE_UNSPEC,
  	NFTA_QUEUE_NUM,
  	NFTA_QUEUE_TOTAL,
  	NFTA_QUEUE_FLAGS,
  	NFTA_QUEUE_SREG_QNUM,
  	__NFTA_QUEUE_MAX
  };
  #define NFTA_QUEUE_MAX		(__NFTA_QUEUE_MAX - 1)
  
  #define NFT_QUEUE_FLAG_BYPASS		0x01 /* for compatibility with v2 */
  #define NFT_QUEUE_FLAG_CPU_FANOUT	0x02 /* use current CPU (no hashing) */
  #define NFT_QUEUE_FLAG_MASK		0x03
  
  enum nft_quota_flags {
  	NFT_QUOTA_F_INV		= (1 << 0),
  	NFT_QUOTA_F_DEPLETED	= (1 << 1),
  };
  
  /**
   * enum nft_quota_attributes - nf_tables quota expression netlink attributes
   *
   * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
   * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
   * @NFTA_QUOTA_CONSUMED: quota already consumed in bytes (NLA_U64)
   */
  enum nft_quota_attributes {
  	NFTA_QUOTA_UNSPEC,
  	NFTA_QUOTA_BYTES,
  	NFTA_QUOTA_FLAGS,
  	NFTA_QUOTA_PAD,
  	NFTA_QUOTA_CONSUMED,
  	__NFTA_QUOTA_MAX
  };
  #define NFTA_QUOTA_MAX		(__NFTA_QUOTA_MAX - 1)
  
  /**
   * enum nft_reject_types - nf_tables reject expression reject types
   *
   * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
   * @NFT_REJECT_TCP_RST: reject using TCP RST
   * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
   */
  enum nft_reject_types {
  	NFT_REJECT_ICMP_UNREACH,
  	NFT_REJECT_TCP_RST,
  	NFT_REJECT_ICMPX_UNREACH,
  };
  
  /**
   * enum nft_reject_code - Generic reject codes for IPv4/IPv6
   *
   * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
   * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
   * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
   * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
   *
   * These codes are mapped to real ICMP and ICMPv6 codes.
   */
  enum nft_reject_inet_code {
  	NFT_REJECT_ICMPX_NO_ROUTE	= 0,
  	NFT_REJECT_ICMPX_PORT_UNREACH,
  	NFT_REJECT_ICMPX_HOST_UNREACH,
  	NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
  	__NFT_REJECT_ICMPX_MAX
  };
  #define NFT_REJECT_ICMPX_MAX	(__NFT_REJECT_ICMPX_MAX - 1)
  
  /**
   * enum nft_reject_attributes - nf_tables reject expression netlink attributes
   *
   * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
   * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
   */
  enum nft_reject_attributes {
  	NFTA_REJECT_UNSPEC,
  	NFTA_REJECT_TYPE,
  	NFTA_REJECT_ICMP_CODE,
  	__NFTA_REJECT_MAX
  };
  #define NFTA_REJECT_MAX		(__NFTA_REJECT_MAX - 1)
  
  /**
   * enum nft_nat_types - nf_tables nat expression NAT types
   *
   * @NFT_NAT_SNAT: source NAT
   * @NFT_NAT_DNAT: destination NAT
   */
  enum nft_nat_types {
  	NFT_NAT_SNAT,
  	NFT_NAT_DNAT,
  };
  
  /**
   * enum nft_nat_attributes - nf_tables nat expression netlink attributes
   *
   * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
   * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
   * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
   * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
   * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
   * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
   * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
   */
  enum nft_nat_attributes {
  	NFTA_NAT_UNSPEC,
  	NFTA_NAT_TYPE,
  	NFTA_NAT_FAMILY,
  	NFTA_NAT_REG_ADDR_MIN,
  	NFTA_NAT_REG_ADDR_MAX,
  	NFTA_NAT_REG_PROTO_MIN,
  	NFTA_NAT_REG_PROTO_MAX,
  	NFTA_NAT_FLAGS,
  	__NFTA_NAT_MAX
  };
  #define NFTA_NAT_MAX		(__NFTA_NAT_MAX - 1)
  
  /**
   * enum nft_masq_attributes - nf_tables masquerade expression attributes
   *
   * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
   * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
   * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
   */
  enum nft_masq_attributes {
  	NFTA_MASQ_UNSPEC,
  	NFTA_MASQ_FLAGS,
  	NFTA_MASQ_REG_PROTO_MIN,
  	NFTA_MASQ_REG_PROTO_MAX,
  	__NFTA_MASQ_MAX
  };
  #define NFTA_MASQ_MAX		(__NFTA_MASQ_MAX - 1)
  
  /**
   * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
   *
   * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
   * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
   * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
   */
  enum nft_redir_attributes {
  	NFTA_REDIR_UNSPEC,
  	NFTA_REDIR_REG_PROTO_MIN,
  	NFTA_REDIR_REG_PROTO_MAX,
  	NFTA_REDIR_FLAGS,
  	__NFTA_REDIR_MAX
  };
  #define NFTA_REDIR_MAX		(__NFTA_REDIR_MAX - 1)
  
  /**
   * enum nft_dup_attributes - nf_tables dup expression netlink attributes
   *
   * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
   * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
   */
  enum nft_dup_attributes {
  	NFTA_DUP_UNSPEC,
  	NFTA_DUP_SREG_ADDR,
  	NFTA_DUP_SREG_DEV,
  	__NFTA_DUP_MAX
  };
  #define NFTA_DUP_MAX		(__NFTA_DUP_MAX - 1)
  
  /**
   * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
   *
   * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
   */
  enum nft_fwd_attributes {
  	NFTA_FWD_UNSPEC,
  	NFTA_FWD_SREG_DEV,
  	__NFTA_FWD_MAX
  };
  #define NFTA_FWD_MAX	(__NFTA_FWD_MAX - 1)
  
  /**
   * enum nft_objref_attributes - nf_tables stateful object expression netlink attributes
   *
   * @NFTA_OBJREF_IMM_TYPE: object type for immediate reference (NLA_U32: nft_register)
   * @NFTA_OBJREF_IMM_NAME: object name for immediate reference (NLA_STRING)
   * @NFTA_OBJREF_SET_SREG: source register of the data to look for (NLA_U32: nft_registers)
   * @NFTA_OBJREF_SET_NAME: name of the set where to look for (NLA_STRING)
   * @NFTA_OBJREF_SET_ID: id of the set where to look for in this transaction (NLA_U32)
   */
  enum nft_objref_attributes {
  	NFTA_OBJREF_UNSPEC,
  	NFTA_OBJREF_IMM_TYPE,
  	NFTA_OBJREF_IMM_NAME,
  	NFTA_OBJREF_SET_SREG,
  	NFTA_OBJREF_SET_NAME,
  	NFTA_OBJREF_SET_ID,
  	__NFTA_OBJREF_MAX
  };
  #define NFTA_OBJREF_MAX	(__NFTA_OBJREF_MAX - 1)
  
  /**
   * enum nft_gen_attributes - nf_tables ruleset generation attributes
   *
   * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
   */
  enum nft_gen_attributes {
  	NFTA_GEN_UNSPEC,
  	NFTA_GEN_ID,
  	NFTA_GEN_PROC_PID,
  	NFTA_GEN_PROC_NAME,
  	__NFTA_GEN_MAX
  };
  #define NFTA_GEN_MAX		(__NFTA_GEN_MAX - 1)
  
  /*
   * enum nft_fib_attributes - nf_tables fib expression netlink attributes
   *
   * @NFTA_FIB_DREG: destination register (NLA_U32)
   * @NFTA_FIB_RESULT: desired result (NLA_U32)
   * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
   *
   * The FIB expression performs a route lookup according
   * to the packet data.
   */
  enum nft_fib_attributes {
  	NFTA_FIB_UNSPEC,
  	NFTA_FIB_DREG,
  	NFTA_FIB_RESULT,
  	NFTA_FIB_FLAGS,
  	__NFTA_FIB_MAX
  };
  #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
  
  enum nft_fib_result {
  	NFT_FIB_RESULT_UNSPEC,
  	NFT_FIB_RESULT_OIF,
  	NFT_FIB_RESULT_OIFNAME,
  	NFT_FIB_RESULT_ADDRTYPE,
  	__NFT_FIB_RESULT_MAX
  };
  #define NFT_FIB_RESULT_MAX	(__NFT_FIB_RESULT_MAX - 1)
  
  enum nft_fib_flags {
  	NFTA_FIB_F_SADDR	= 1 << 0,	/* look up src */
  	NFTA_FIB_F_DADDR	= 1 << 1,	/* look up dst */
  	NFTA_FIB_F_MARK		= 1 << 2,	/* use skb->mark */
  	NFTA_FIB_F_IIF		= 1 << 3,	/* restrict to iif */
  	NFTA_FIB_F_OIF		= 1 << 4,	/* restrict to oif */
  	NFTA_FIB_F_PRESENT	= 1 << 5,	/* check existence only */
  };
  
  enum nft_ct_helper_attributes {
  	NFTA_CT_HELPER_UNSPEC,
  	NFTA_CT_HELPER_NAME,
  	NFTA_CT_HELPER_L3PROTO,
  	NFTA_CT_HELPER_L4PROTO,
  	__NFTA_CT_HELPER_MAX,
  };
  #define NFTA_CT_HELPER_MAX	(__NFTA_CT_HELPER_MAX - 1)
  
  #define NFT_OBJECT_UNSPEC	0
  #define NFT_OBJECT_COUNTER	1
  #define NFT_OBJECT_QUOTA	2
  #define NFT_OBJECT_CT_HELPER	3
  #define NFT_OBJECT_LIMIT	4
  #define __NFT_OBJECT_MAX	5
  #define NFT_OBJECT_MAX		(__NFT_OBJECT_MAX - 1)
  
  /**
   * enum nft_object_attributes - nf_tables stateful object netlink attributes
   *
   * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
   * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
   * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
   * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
   * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
   * @NFTA_OBJ_HANDLE: object handle (NLA_U64)
   */
  enum nft_object_attributes {
  	NFTA_OBJ_UNSPEC,
  	NFTA_OBJ_TABLE,
  	NFTA_OBJ_NAME,
  	NFTA_OBJ_TYPE,
  	NFTA_OBJ_DATA,
  	NFTA_OBJ_USE,
  	NFTA_OBJ_HANDLE,
  	NFTA_OBJ_PAD,
  	__NFTA_OBJ_MAX
  };
  #define NFTA_OBJ_MAX		(__NFTA_OBJ_MAX - 1)
  
  /**
   * enum nft_flowtable_attributes - nf_tables flow table netlink attributes
   *
   * @NFTA_FLOWTABLE_TABLE: name of the table containing the expression (NLA_STRING)
   * @NFTA_FLOWTABLE_NAME: name of this flow table (NLA_STRING)
   * @NFTA_FLOWTABLE_HOOK: netfilter hook configuration(NLA_U32)
   * @NFTA_FLOWTABLE_USE: number of references to this flow table (NLA_U32)
   * @NFTA_FLOWTABLE_HANDLE: object handle (NLA_U64)
   */
  enum nft_flowtable_attributes {
  	NFTA_FLOWTABLE_UNSPEC,
  	NFTA_FLOWTABLE_TABLE,
  	NFTA_FLOWTABLE_NAME,
  	NFTA_FLOWTABLE_HOOK,
  	NFTA_FLOWTABLE_USE,
  	NFTA_FLOWTABLE_HANDLE,
  	NFTA_FLOWTABLE_PAD,
  	__NFTA_FLOWTABLE_MAX
  };
  #define NFTA_FLOWTABLE_MAX	(__NFTA_FLOWTABLE_MAX - 1)
  
  /**
   * enum nft_flowtable_hook_attributes - nf_tables flow table hook netlink attributes
   *
   * @NFTA_FLOWTABLE_HOOK_NUM: netfilter hook number (NLA_U32)
   * @NFTA_FLOWTABLE_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
   * @NFTA_FLOWTABLE_HOOK_DEVS: input devices this flow table is bound to (NLA_NESTED)
   */
  enum nft_flowtable_hook_attributes {
  	NFTA_FLOWTABLE_HOOK_UNSPEC,
  	NFTA_FLOWTABLE_HOOK_NUM,
  	NFTA_FLOWTABLE_HOOK_PRIORITY,
  	NFTA_FLOWTABLE_HOOK_DEVS,
  	__NFTA_FLOWTABLE_HOOK_MAX
  };
  #define NFTA_FLOWTABLE_HOOK_MAX	(__NFTA_FLOWTABLE_HOOK_MAX - 1)
  
  /**
   * enum nft_device_attributes - nf_tables device netlink attributes
   *
   * @NFTA_DEVICE_NAME: name of this device (NLA_STRING)
   */
  enum nft_devices_attributes {
  	NFTA_DEVICE_UNSPEC,
  	NFTA_DEVICE_NAME,
  	__NFTA_DEVICE_MAX
  };
  #define NFTA_DEVICE_MAX		(__NFTA_DEVICE_MAX - 1)
  
  
  /**
   * enum nft_trace_attributes - nf_tables trace netlink attributes
   *
   * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
   * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
   * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
   * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
   * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
   * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
   * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
   * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
   * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
   * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
   * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
   * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
   * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
   * @NFTA_TRACE_MARK: nfmark (NLA_U32)
   * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
   * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
   */
  enum nft_trace_attributes {
  	NFTA_TRACE_UNSPEC,
  	NFTA_TRACE_TABLE,
  	NFTA_TRACE_CHAIN,
  	NFTA_TRACE_RULE_HANDLE,
  	NFTA_TRACE_TYPE,
  	NFTA_TRACE_VERDICT,
  	NFTA_TRACE_ID,
  	NFTA_TRACE_LL_HEADER,
  	NFTA_TRACE_NETWORK_HEADER,
  	NFTA_TRACE_TRANSPORT_HEADER,
  	NFTA_TRACE_IIF,
  	NFTA_TRACE_IIFTYPE,
  	NFTA_TRACE_OIF,
  	NFTA_TRACE_OIFTYPE,
  	NFTA_TRACE_MARK,
  	NFTA_TRACE_NFPROTO,
  	NFTA_TRACE_POLICY,
  	NFTA_TRACE_PAD,
  	__NFTA_TRACE_MAX
  };
  #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
  
  enum nft_trace_types {
  	NFT_TRACETYPE_UNSPEC,
  	NFT_TRACETYPE_POLICY,
  	NFT_TRACETYPE_RETURN,
  	NFT_TRACETYPE_RULE,
  	__NFT_TRACETYPE_MAX
  };
  #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
  
  /**
   * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
   *
   * @NFTA_NG_DREG: destination register (NLA_U32)
   * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
   * @NFTA_NG_TYPE: operation type (NLA_U32)
   * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
   */
  enum nft_ng_attributes {
  	NFTA_NG_UNSPEC,
  	NFTA_NG_DREG,
  	NFTA_NG_MODULUS,
  	NFTA_NG_TYPE,
  	NFTA_NG_OFFSET,
  	__NFTA_NG_MAX
  };
  #define NFTA_NG_MAX	(__NFTA_NG_MAX - 1)
  
  enum nft_ng_types {
  	NFT_NG_INCREMENTAL,
  	NFT_NG_RANDOM,
  	__NFT_NG_MAX
  };
  #define NFT_NG_MAX	(__NFT_NG_MAX - 1)
  
  #endif /* _LINUX_NF_TABLES_H */
  