Release 4.7 include/uapi/linux/netfilter/nf_tables.h
#ifndef _LINUX_NF_TABLES_H
#define _LINUX_NF_TABLES_H
#define NFT_TABLE_MAXNAMELEN 32
#define NFT_CHAIN_MAXNAMELEN 32
#define NFT_SET_MAXNAMELEN 32
#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,
MFT_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)
*/
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_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_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)
*/
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_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: numerice 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
*/
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,
};
/**
* 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)
*/
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_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)
*/
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_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 opertaor
*/
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_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)
*/
enum nft_lookup_attributes {
NFTA_LOOKUP_UNSPEC,
NFTA_LOOKUP_SET,
NFTA_LOOKUP_SREG,
NFTA_LOOKUP_DREG,
NFTA_LOOKUP_SET_ID,
__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_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)
*/
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_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_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)
*/
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_MAX
};
#define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1)
/**
* enum nft_exthdr_attributes - nf_tables IPv6 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)
*/
enum nft_exthdr_attributes {
NFTA_EXTHDR_UNSPEC,
NFTA_EXTHDR_DREG,
NFTA_EXTHDR_TYPE,
NFTA_EXTHDR_OFFSET,
NFTA_EXTHDR_LEN,
__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
*/
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,
};
/**
* 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_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
*/
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,
};
/**
* 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_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)
*/
enum nft_queue_attributes {
NFTA_QUEUE_UNSPEC,
NFTA_QUEUE_NUM,
NFTA_QUEUE_TOTAL,
NFTA_QUEUE_FLAGS,
__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_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_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_MAX
};
#define NFTA_GEN_MAX (__NFTA_GEN_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_attibutes {
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)
#endif /* _LINUX_NF_TABLES_H */
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