/* 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
#define NFT_OSF_MAXGENRELEN     16

/**
 * 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
#define NFT_REG32_COUNT (NFT_REG32_15 - NFT_REG32_00 + 1)

/**
 * 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_UNSPEC,
        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)
 * @NFTA_HOOK_DEVS: list of netdevices (NLA_NESTED)
 */
enum nft_hook_attributes {
        NFTA_HOOK_UNSPEC,
        NFTA_HOOK_HOOKNUM,
        NFTA_HOOK_PRIORITY,
        NFTA_HOOK_DEV,
        NFTA_HOOK_DEVS,
        __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,
        NFT_TABLE_F_OWNER       = 0x2,
};
#define NFT_TABLE_F_MASK        (NFT_TABLE_F_DORMANT | \
                                 NFT_TABLE_F_OWNER)

/**
 * 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)
 * @NFTA_TABLE_USERDATA: user data (NLA_BINARY)
 * @NFTA_TABLE_OWNER: owner of this table through netlink portID (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_USERDATA,
        NFTA_TABLE_OWNER,
        __NFTA_TABLE_MAX
};
#define NFTA_TABLE_MAX          (__NFTA_TABLE_MAX - 1)

enum nft_chain_flags {
        NFT_CHAIN_BASE          = (1 << 0),
        NFT_CHAIN_HW_OFFLOAD    = (1 << 1),
        NFT_CHAIN_BINDING       = (1 << 2),
};
#define NFT_CHAIN_FLAGS         (NFT_CHAIN_BASE         | \
                                 NFT_CHAIN_HW_OFFLOAD   | \
                                 NFT_CHAIN_BINDING)

/**
 * 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)
 * @NFTA_CHAIN_FLAGS: chain flags
 * @NFTA_CHAIN_ID: uniquely identifies a chain in a transaction (NLA_U32)
 * @NFTA_CHAIN_USERDATA: user data (NLA_BINARY)
 */
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_FLAGS,
        NFTA_CHAIN_ID,
        NFTA_CHAIN_USERDATA,
        __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)
 * @NFTA_RULE_POSITION_ID: transaction unique identifier of the previous rule (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_POSITION_ID,
        NFTA_RULE_CHAIN_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 can be updated from the evaluation path
 * @NFT_SET_OBJECT: set contains stateful objects
 * @NFT_SET_CONCAT: set contains a concatenation
 * @NFT_SET_EXPR: set contains expressions
 */
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,
        NFT_SET_CONCAT                  = 0x80,
        NFT_SET_EXPR                    = 0x100,
};

/**
 * 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)
 * @NFTA_SET_DESC_CONCAT: description of field concatenation (NLA_NESTED)
 */
enum nft_set_desc_attributes {
        NFTA_SET_DESC_UNSPEC,
        NFTA_SET_DESC_SIZE,
        NFTA_SET_DESC_CONCAT,
        __NFTA_SET_DESC_MAX
};
#define NFTA_SET_DESC_MAX       (__NFTA_SET_DESC_MAX - 1)

/**
 * enum nft_set_field_attributes - attributes of concatenated fields
 *
 * @NFTA_SET_FIELD_LEN: length of single field, in bits (NLA_U32)
 */
enum nft_set_field_attributes {
        NFTA_SET_FIELD_UNSPEC,
        NFTA_SET_FIELD_LEN,
        __NFTA_SET_FIELD_MAX
};
#define NFTA_SET_FIELD_MAX      (__NFTA_SET_FIELD_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)
 * @NFTA_SET_EXPR: set expression (NLA_NESTED: nft_expr_attributes)
 * @NFTA_SET_EXPRESSIONS: list of expressions (NLA_NESTED: nft_list_attributes)
 */
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_EXPR,
        NFTA_SET_EXPRESSIONS,
        __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
 * @NFT_SET_ELEM_CATCHALL: special catch-all element
 */
enum nft_set_elem_flags {
        NFT_SET_ELEM_INTERVAL_END       = 0x1,
        NFT_SET_ELEM_CATCHALL           = 0x2,
};

/**
 * 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)
 * @NFTA_SET_ELEM_KEY_END: closing key value (NLA_NESTED: nft_data)
 * @NFTA_SET_ELEM_EXPRESSIONS: list of expressions (NLA_NESTED: nft_list_attributes)
 */
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_KEY_END,
        NFTA_SET_ELEM_EXPRESSIONS,
        __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)
 * @NFTA_VERDICT_CHAIN_ID: jump target chain ID (NLA_U32)
 */
enum nft_verdict_attributes {
        NFTA_VERDICT_UNSPEC,
        NFTA_VERDICT_CODE,
        NFTA_VERDICT_CHAIN,
        NFTA_VERDICT_CHAIN_ID,
        __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_ops - nf_tables bitwise operations
 *
 * @NFT_BITWISE_BOOL: mask-and-xor operation used to implement NOT, AND, OR and
 *                    XOR boolean operations
 * @NFT_BITWISE_LSHIFT: left-shift operation
 * @NFT_BITWISE_RSHIFT: right-shift operation
 */
enum nft_bitwise_ops {
        NFT_BITWISE_BOOL,
        NFT_BITWISE_LSHIFT,
        NFT_BITWISE_RSHIFT,
};

/**
 * 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)
 * @NFTA_BITWISE_OP: type of operation (NLA_U32: nft_bitwise_ops)
 * @NFTA_BITWISE_DATA: argument for non-boolean operations
 *                     (NLA_NESTED: nft_data_attributes)
 *
 * The bitwise expression supports boolean and shift operations.  It implements
 * the boolean operations by performing the following operation:
 *
 * dreg = (sreg & mask) ^ xor
 *
 * with these mask and xor values:
 *
 *              mask    xor
 * NOT:         1       1
 * OR:          ~x      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_OP,
        NFTA_BITWISE_DATA,
        __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,
        NFT_DYNSET_OP_DELETE,
};

enum nft_dynset_flags {
        NFT_DYNSET_F_INV        = (1 << 0),
        NFT_DYNSET_F_EXPR       = (1 << 1),
};

/**
 * 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)
 * @NFTA_DYNSET_EXPRESSIONS: list of expressions (NLA_NESTED: nft_list_attributes)
 */
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_EXPRESSIONS,
        __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)
 * @NFT_PAYLOAD_CSUM_SCTP: CRC-32c, for use in SCTP header (RFC 3309)
 */
enum nft_payload_csum_types {
        NFT_PAYLOAD_CSUM_NONE,
        NFT_PAYLOAD_CSUM_INET,
        NFT_PAYLOAD_CSUM_SCTP,
};

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
 * @NFT_EXTHDR_OP_IPV4: match against ipv4 options
 * @NFT_EXTHDR_OP_SCTP: match against sctp chunks
 */
enum nft_exthdr_op {
        NFT_EXTHDR_OP_IPV6,
        NFT_EXTHDR_OP_TCPOPT,
        NFT_EXTHDR_OP_IPV4,
        NFT_EXTHDR_OP_SCTP,
        __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)
 * @NFT_META_IIFKIND: packet input interface kind name (dev->rtnl_link_ops->kind)
 * @NFT_META_OIFKIND: packet output interface kind name (dev->rtnl_link_ops->kind)
 * @NFT_META_BRI_IIFPVID: packet input bridge port pvid
 * @NFT_META_BRI_IIFVPROTO: packet input bridge vlan proto
 * @NFT_META_TIME_NS: time since epoch (in nanoseconds)
 * @NFT_META_TIME_DAY: day of week (from 0 = Sunday to 6 = Saturday)
 * @NFT_META_TIME_HOUR: hour of day (in seconds)
 * @NFT_META_SDIF: slave device interface index
 * @NFT_META_SDIFNAME: slave device interface name
 */
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,
        NFT_META_IIFKIND,
        NFT_META_OIFKIND,
        NFT_META_BRI_IIFPVID,
        NFT_META_BRI_IIFVPROTO,
        NFT_META_TIME_NS,
        NFT_META_TIME_DAY,
        NFT_META_TIME_HOUR,
        NFT_META_SDIF,
        NFT_META_SDIFNAME,
};

/**
 * 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
 * @NFT_RT_XFRM: boolean, skb->dst->xfrm != NULL
 */
enum nft_rt_keys {
        NFT_RT_CLASSID,
        NFT_RT_NEXTHOP4,
        NFT_RT_NEXTHOP6,
        NFT_RT_TCPMSS,
        NFT_RT_XFRM,
        __NFT_RT_MAX
};
#define NFT_RT_MAX              (__NFT_RT_MAX - 1)

/**
 * 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)
 * @NFTA_HASH_SET_NAME: name of the map to lookup (NLA_STRING)
 * @NFTA_HASH_SET_ID: id of the map (NLA_U32)
 */
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_SET_NAME,     /* deprecated */
        NFTA_HASH_SET_ID,       /* deprecated */
        __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_socket_attributes - nf_tables socket expression netlink attributes
 *
 * @NFTA_SOCKET_KEY: socket key to match
 * @NFTA_SOCKET_DREG: destination register
 * @NFTA_SOCKET_LEVEL: cgroups2 ancestor level (only for cgroupsv2)
 */
enum nft_socket_attributes {
        NFTA_SOCKET_UNSPEC,
        NFTA_SOCKET_KEY,
        NFTA_SOCKET_DREG,
        NFTA_SOCKET_LEVEL,
        __NFTA_SOCKET_MAX
};
#define NFTA_SOCKET_MAX         (__NFTA_SOCKET_MAX - 1)

/*
 * enum nft_socket_keys - nf_tables socket expression keys
 *
 * @NFT_SOCKET_TRANSPARENT: Value of the IP(V6)_TRANSPARENT socket option
 * @NFT_SOCKET_MARK: Value of the socket mark
 * @NFT_SOCKET_WILDCARD: Whether the socket is zero-bound (e.g. 0.0.0.0 or ::0)
 * @NFT_SOCKET_CGROUPV2: Match on cgroups version 2
 */
enum nft_socket_keys {
        NFT_SOCKET_TRANSPARENT,
        NFT_SOCKET_MARK,
        NFT_SOCKET_WILDCARD,
        NFT_SOCKET_CGROUPV2,
        __NFT_SOCKET_MAX
};
#define NFT_SOCKET_MAX  (__NFT_SOCKET_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, deprecated)
 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address, deprecated)
 * @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
 * @NFT_CT_SRC_IP: conntrack layer 3 protocol source (IPv4 address)
 * @NFT_CT_DST_IP: conntrack layer 3 protocol destination (IPv4 address)
 * @NFT_CT_SRC_IP6: conntrack layer 3 protocol source (IPv6 address)
 * @NFT_CT_DST_IP6: conntrack layer 3 protocol destination (IPv6 address)
 * @NFT_CT_ID: conntrack id
 */
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,
        NFT_CT_SRC_IP,
        NFT_CT_DST_IP,
        NFT_CT_SRC_IP6,
        NFT_CT_DST_IP6,
        NFT_CT_ID,
        __NFT_CT_MAX
};
#define NFT_CT_MAX              (__NFT_CT_MAX - 1)

/**
 * 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_connlimit_flags {
        NFT_CONNLIMIT_F_INV     = (1 << 0),
};

/**
 * enum nft_connlimit_attributes - nf_tables connlimit expression netlink attributes
 *
 * @NFTA_CONNLIMIT_COUNT: number of connections (NLA_U32)
 * @NFTA_CONNLIMIT_FLAGS: flags (NLA_U32: enum nft_connlimit_flags)
 */
enum nft_connlimit_attributes {
        NFTA_CONNLIMIT_UNSPEC,
        NFTA_CONNLIMIT_COUNT,
        NFTA_CONNLIMIT_FLAGS,
        __NFTA_CONNLIMIT_MAX
};
#define NFTA_CONNLIMIT_MAX      (__NFTA_CONNLIMIT_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_last_attributes - nf_tables last expression netlink attributes
 *
 * @NFTA_LAST_SET: last update has been set, zero means never updated (NLA_U32)
 * @NFTA_LAST_MSECS: milliseconds since last update (NLA_U64)
 */
enum nft_last_attributes {
        NFTA_LAST_UNSPEC,
        NFTA_LAST_SET,
        NFTA_LAST_MSECS,
        NFTA_LAST_PAD,
        __NFTA_LAST_MAX
};
#define NFTA_LAST_MAX   (__NFTA_LAST_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_log_level - nf_tables log levels
 *
 * @NFT_LOGLEVEL_EMERG: system is unusable
 * @NFT_LOGLEVEL_ALERT: action must be taken immediately
 * @NFT_LOGLEVEL_CRIT: critical conditions
 * @NFT_LOGLEVEL_ERR: error conditions
 * @NFT_LOGLEVEL_WARNING: warning conditions
 * @NFT_LOGLEVEL_NOTICE: normal but significant condition
 * @NFT_LOGLEVEL_INFO: informational
 * @NFT_LOGLEVEL_DEBUG: debug-level messages
 * @NFT_LOGLEVEL_AUDIT: enabling audit logging
 */
enum nft_log_level {
        NFT_LOGLEVEL_EMERG,
        NFT_LOGLEVEL_ALERT,
        NFT_LOGLEVEL_CRIT,
        NFT_LOGLEVEL_ERR,
        NFT_LOGLEVEL_WARNING,
        NFT_LOGLEVEL_NOTICE,
        NFT_LOGLEVEL_INFO,
        NFT_LOGLEVEL_DEBUG,
        NFT_LOGLEVEL_AUDIT,
        __NFT_LOGLEVEL_MAX
};
#define NFT_LOGLEVEL_MAX        (__NFT_LOGLEVEL_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_secmark_attributes - nf_tables secmark object netlink attributes
 *
 * @NFTA_SECMARK_CTX: security context (NLA_STRING)
 */
enum nft_secmark_attributes {
        NFTA_SECMARK_UNSPEC,
        NFTA_SECMARK_CTX,
        __NFTA_SECMARK_MAX,
};
#define NFTA_SECMARK_MAX        (__NFTA_SECMARK_MAX - 1)

/* Max security context length */
#define NFT_SECMARK_CTX_MAXLEN          256

/**
 * 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_tproxy_attributes - nf_tables tproxy expression netlink attributes
 *
 * NFTA_TPROXY_FAMILY: Target address family (NLA_U32: nft_registers)
 * NFTA_TPROXY_REG_ADDR: Target address register (NLA_U32: nft_registers)
 * NFTA_TPROXY_REG_PORT: Target port register (NLA_U32: nft_registers)
 */
enum nft_tproxy_attributes {
        NFTA_TPROXY_UNSPEC,
        NFTA_TPROXY_FAMILY,
        NFTA_TPROXY_REG_ADDR,
        NFTA_TPROXY_REG_PORT,
        __NFTA_TPROXY_MAX
};
#define NFTA_TPROXY_MAX         (__NFTA_TPROXY_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)
 * @NFTA_FWD_SREG_ADDR: source register of destination address (NLA_U32: nft_register)
 * @NFTA_FWD_NFPROTO: layer 3 family of source register address (NLA_U32: enum nfproto)
 */
enum nft_fwd_attributes {
        NFTA_FWD_UNSPEC,
        NFTA_FWD_SREG_DEV,
        NFTA_FWD_SREG_ADDR,
        NFTA_FWD_NFPROTO,
        __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)

enum nft_ct_timeout_timeout_attributes {
        NFTA_CT_TIMEOUT_UNSPEC,
        NFTA_CT_TIMEOUT_L3PROTO,
        NFTA_CT_TIMEOUT_L4PROTO,
        NFTA_CT_TIMEOUT_DATA,
        __NFTA_CT_TIMEOUT_MAX,
};
#define NFTA_CT_TIMEOUT_MAX     (__NFTA_CT_TIMEOUT_MAX - 1)

enum nft_ct_expectation_attributes {
        NFTA_CT_EXPECT_UNSPEC,
        NFTA_CT_EXPECT_L3PROTO,
        NFTA_CT_EXPECT_L4PROTO,
        NFTA_CT_EXPECT_DPORT,
        NFTA_CT_EXPECT_TIMEOUT,
        NFTA_CT_EXPECT_SIZE,
        __NFTA_CT_EXPECT_MAX,
};
#define NFTA_CT_EXPECT_MAX      (__NFTA_CT_EXPECT_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_CONNLIMIT    5
#define NFT_OBJECT_TUNNEL       6
#define NFT_OBJECT_CT_TIMEOUT   7
#define NFT_OBJECT_SECMARK      8
#define NFT_OBJECT_CT_EXPECT    9
#define NFT_OBJECT_SYNPROXY     10
#define __NFT_OBJECT_MAX        11
#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)
 * @NFTA_OBJ_USERDATA: user data (NLA_BINARY)
 */
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_USERDATA,
        __NFTA_OBJ_MAX
};
#define NFTA_OBJ_MAX            (__NFTA_OBJ_MAX - 1)

/**
 * enum nft_flowtable_flags - nf_tables flowtable flags
 *
 * @NFT_FLOWTABLE_HW_OFFLOAD: flowtable hardware offload is enabled
 * @NFT_FLOWTABLE_COUNTER: enable flow counters
 */
enum nft_flowtable_flags {
        NFT_FLOWTABLE_HW_OFFLOAD        = 0x1,
        NFT_FLOWTABLE_COUNTER           = 0x2,
        NFT_FLOWTABLE_MASK              = (NFT_FLOWTABLE_HW_OFFLOAD |
                                           NFT_FLOWTABLE_COUNTER)
};

/**
 * 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)
 * @NFTA_FLOWTABLE_FLAGS: flags (NLA_U32)
 */
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_FLAGS,
        __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_osf_attributes - nftables osf expression netlink attributes
 *
 * @NFTA_OSF_DREG: destination register (NLA_U32: nft_registers)
 * @NFTA_OSF_TTL: Value of the TTL osf option (NLA_U8)
 * @NFTA_OSF_FLAGS: flags (NLA_U32)
 */
enum nft_osf_attributes {
        NFTA_OSF_UNSPEC,
        NFTA_OSF_DREG,
        NFTA_OSF_TTL,
        NFTA_OSF_FLAGS,
        __NFTA_OSF_MAX,
};
#define NFTA_OSF_MAX (__NFTA_OSF_MAX - 1)

enum nft_osf_flags {
        NFT_OSF_F_VERSION = (1 << 0),
};

/**
 * enum nft_synproxy_attributes - nf_tables synproxy expression netlink attributes
 *
 * @NFTA_SYNPROXY_MSS: mss value sent to the backend (NLA_U16)
 * @NFTA_SYNPROXY_WSCALE: wscale value sent to the backend (NLA_U8)
 * @NFTA_SYNPROXY_FLAGS: flags (NLA_U32)
 */
enum nft_synproxy_attributes {
        NFTA_SYNPROXY_UNSPEC,
        NFTA_SYNPROXY_MSS,
        NFTA_SYNPROXY_WSCALE,
        NFTA_SYNPROXY_FLAGS,
        __NFTA_SYNPROXY_MAX,
};
#define NFTA_SYNPROXY_MAX (__NFTA_SYNPROXY_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_xfrm_attributes - nf_tables xfrm expr netlink attributes
 *
 * @NFTA_XFRM_DREG: destination register (NLA_U32)
 * @NFTA_XFRM_KEY: enum nft_xfrm_keys (NLA_U32)
 * @NFTA_XFRM_DIR: direction (NLA_U8)
 * @NFTA_XFRM_SPNUM: index in secpath array (NLA_U32)
 */
enum nft_xfrm_attributes {
        NFTA_XFRM_UNSPEC,
        NFTA_XFRM_DREG,
        NFTA_XFRM_KEY,
        NFTA_XFRM_DIR,
        NFTA_XFRM_SPNUM,
        __NFTA_XFRM_MAX
};
#define NFTA_XFRM_MAX (__NFTA_XFRM_MAX - 1)

enum nft_xfrm_keys {
        NFT_XFRM_KEY_UNSPEC,
        NFT_XFRM_KEY_DADDR_IP4,
        NFT_XFRM_KEY_DADDR_IP6,
        NFT_XFRM_KEY_SADDR_IP4,
        NFT_XFRM_KEY_SADDR_IP6,
        NFT_XFRM_KEY_REQID,
        NFT_XFRM_KEY_SPI,
        __NFT_XFRM_KEY_MAX,
};
#define NFT_XFRM_KEY_MAX (__NFT_XFRM_KEY_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)
 * @NFTA_NG_SET_NAME: name of the map to lookup (NLA_STRING)
 * @NFTA_NG_SET_ID: id of the map (NLA_U32)
 */
enum nft_ng_attributes {
        NFTA_NG_UNSPEC,
        NFTA_NG_DREG,
        NFTA_NG_MODULUS,
        NFTA_NG_TYPE,
        NFTA_NG_OFFSET,
        NFTA_NG_SET_NAME,       /* deprecated */
        NFTA_NG_SET_ID,         /* deprecated */
        __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)

enum nft_tunnel_key_ip_attributes {
        NFTA_TUNNEL_KEY_IP_UNSPEC,
        NFTA_TUNNEL_KEY_IP_SRC,
        NFTA_TUNNEL_KEY_IP_DST,
        __NFTA_TUNNEL_KEY_IP_MAX
};
#define NFTA_TUNNEL_KEY_IP_MAX  (__NFTA_TUNNEL_KEY_IP_MAX - 1)

enum nft_tunnel_ip6_attributes {
        NFTA_TUNNEL_KEY_IP6_UNSPEC,
        NFTA_TUNNEL_KEY_IP6_SRC,
        NFTA_TUNNEL_KEY_IP6_DST,
        NFTA_TUNNEL_KEY_IP6_FLOWLABEL,
        __NFTA_TUNNEL_KEY_IP6_MAX
};
#define NFTA_TUNNEL_KEY_IP6_MAX (__NFTA_TUNNEL_KEY_IP6_MAX - 1)

enum nft_tunnel_opts_attributes {
        NFTA_TUNNEL_KEY_OPTS_UNSPEC,
        NFTA_TUNNEL_KEY_OPTS_VXLAN,
        NFTA_TUNNEL_KEY_OPTS_ERSPAN,
        NFTA_TUNNEL_KEY_OPTS_GENEVE,
        __NFTA_TUNNEL_KEY_OPTS_MAX
};
#define NFTA_TUNNEL_KEY_OPTS_MAX        (__NFTA_TUNNEL_KEY_OPTS_MAX - 1)

enum nft_tunnel_opts_vxlan_attributes {
        NFTA_TUNNEL_KEY_VXLAN_UNSPEC,
        NFTA_TUNNEL_KEY_VXLAN_GBP,
        __NFTA_TUNNEL_KEY_VXLAN_MAX
};
#define NFTA_TUNNEL_KEY_VXLAN_MAX       (__NFTA_TUNNEL_KEY_VXLAN_MAX - 1)

enum nft_tunnel_opts_erspan_attributes {
        NFTA_TUNNEL_KEY_ERSPAN_UNSPEC,
        NFTA_TUNNEL_KEY_ERSPAN_VERSION,
        NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX,
        NFTA_TUNNEL_KEY_ERSPAN_V2_HWID,
        NFTA_TUNNEL_KEY_ERSPAN_V2_DIR,
        __NFTA_TUNNEL_KEY_ERSPAN_MAX
};
#define NFTA_TUNNEL_KEY_ERSPAN_MAX      (__NFTA_TUNNEL_KEY_ERSPAN_MAX - 1)

enum nft_tunnel_opts_geneve_attributes {
        NFTA_TUNNEL_KEY_GENEVE_UNSPEC,
        NFTA_TUNNEL_KEY_GENEVE_CLASS,
        NFTA_TUNNEL_KEY_GENEVE_TYPE,
        NFTA_TUNNEL_KEY_GENEVE_DATA,
        __NFTA_TUNNEL_KEY_GENEVE_MAX
};
#define NFTA_TUNNEL_KEY_GENEVE_MAX      (__NFTA_TUNNEL_KEY_GENEVE_MAX - 1)

enum nft_tunnel_flags {
        NFT_TUNNEL_F_ZERO_CSUM_TX       = (1 << 0),
        NFT_TUNNEL_F_DONT_FRAGMENT      = (1 << 1),
        NFT_TUNNEL_F_SEQ_NUMBER         = (1 << 2),
};
#define NFT_TUNNEL_F_MASK       (NFT_TUNNEL_F_ZERO_CSUM_TX | \
                                 NFT_TUNNEL_F_DONT_FRAGMENT | \
                                 NFT_TUNNEL_F_SEQ_NUMBER)

enum nft_tunnel_key_attributes {
        NFTA_TUNNEL_KEY_UNSPEC,
        NFTA_TUNNEL_KEY_ID,
        NFTA_TUNNEL_KEY_IP,
        NFTA_TUNNEL_KEY_IP6,
        NFTA_TUNNEL_KEY_FLAGS,
        NFTA_TUNNEL_KEY_TOS,
        NFTA_TUNNEL_KEY_TTL,
        NFTA_TUNNEL_KEY_SPORT,
        NFTA_TUNNEL_KEY_DPORT,
        NFTA_TUNNEL_KEY_OPTS,
        __NFTA_TUNNEL_KEY_MAX
};
#define NFTA_TUNNEL_KEY_MAX     (__NFTA_TUNNEL_KEY_MAX - 1)

enum nft_tunnel_keys {
        NFT_TUNNEL_PATH,
        NFT_TUNNEL_ID,
        __NFT_TUNNEL_MAX
};
#define NFT_TUNNEL_MAX  (__NFT_TUNNEL_MAX - 1)

enum nft_tunnel_mode {
        NFT_TUNNEL_MODE_NONE,
        NFT_TUNNEL_MODE_RX,
        NFT_TUNNEL_MODE_TX,
        __NFT_TUNNEL_MODE_MAX
};
#define NFT_TUNNEL_MODE_MAX     (__NFT_TUNNEL_MODE_MAX - 1)

enum nft_tunnel_attributes {
        NFTA_TUNNEL_UNSPEC,
        NFTA_TUNNEL_KEY,
        NFTA_TUNNEL_DREG,
        NFTA_TUNNEL_MODE,
        __NFTA_TUNNEL_MAX
};
#define NFTA_TUNNEL_MAX (__NFTA_TUNNEL_MAX - 1)

#endif /* _LINUX_NF_TABLES_H */