#ifndef _LINUX_NF_TABLES_H #define _LINUX_NF_TABLES_H #define NFT_CHAIN_MAXNAMELEN 32 enum nft_registers { NFT_REG_VERDICT, NFT_REG_1, NFT_REG_2, NFT_REG_3, NFT_REG_4, __NFT_REG_MAX }; #define NFT_REG_MAX (__NFT_REG_MAX - 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 { 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_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) */ enum nft_hook_attributes { NFTA_HOOK_UNSPEC, NFTA_HOOK_HOOKNUM, NFTA_HOOK_PRIORITY, __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) */ enum nft_table_attributes { NFTA_TABLE_UNSPEC, NFTA_TABLE_NAME, NFTA_TABLE_FLAGS, __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_NAME: name of the chain (NLA_STRING) * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_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_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_U16) * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes) */ 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_MAX }; #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1) 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 { 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 */ enum nft_set_flags { NFT_SET_ANONYMOUS = 0x1, NFT_SET_CONSTANT = 0x2, NFT_SET_INTERVAL = 0x4, NFT_SET_MAP = 0x8, }; /** * 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) */ 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_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) */ enum nft_set_elem_attributes { NFTA_SET_ELEM_UNSPEC, NFTA_SET_ELEM_KEY, NFTA_SET_ELEM_DATA, NFTA_SET_ELEM_FLAGS, __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) */ 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_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) /** * 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 { NFT_BYTEORDER_NTOH, NFT_BYTEORDER_HTON, }; 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 { 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 { NFTA_LOOKUP_UNSPEC, NFTA_LOOKUP_SET, NFTA_LOOKUP_SREG, NFTA_LOOKUP_DREG, __NFTA_LOOKUP_MAX }; #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_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_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) */ enum nft_payload_attributes { NFTA_PAYLOAD_UNSPEC, NFTA_PAYLOAD_DREG, NFTA_PAYLOAD_BASE, NFTA_PAYLOAD_OFFSET, NFTA_PAYLOAD_LEN, __NFTA_PAYLOAD_MAX }; #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1) 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) */ 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, }; /** * 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) */ enum nft_meta_attributes { NFTA_META_UNSPEC, NFTA_META_DREG, NFTA_META_KEY, __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, }; /** * 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) */ enum nft_ct_attributes { NFTA_CT_UNSPEC, NFTA_CT_DREG, NFTA_CT_KEY, NFTA_CT_DIRECTION, __NFTA_CT_MAX }; #define NFTA_CT_MAX (__NFTA_CT_MAX - 1) /** * enum nft_limit_attributes - nf_tables limit expression netlink attributes * * @NFTA_LIMIT_RATE: refill rate (NLA_U64) * @NFTA_LIMIT_UNIT: refill unit (NLA_U64) */ enum nft_limit_attributes { NFTA_LIMIT_UNSPEC, NFTA_LIMIT_RATE, NFTA_LIMIT_UNIT, __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_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) */ enum nft_log_attributes { NFTA_LOG_UNSPEC, NFTA_LOG_GROUP, NFTA_LOG_PREFIX, NFTA_LOG_SNAPLEN, NFTA_LOG_QTHRESHOLD, __NFTA_LOG_MAX }; #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1) /** * enum nft_reject_types - nf_tables reject expression reject types * * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable * @NFT_REJECT_TCP_RST: reject using TCP RST */ enum nft_reject_types { NFT_REJECT_ICMP_UNREACH, NFT_REJECT_TCP_RST, }; /** * 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_ADDR_MIN: source register of address range start (NLA_U32: nft_registers) * @NFTA_NAT_ADDR_MAX: source register of address range end (NLA_U32: nft_registers) * @NFTA_NAT_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers) * @NFTA_NAT_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers) */ 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_MAX }; #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1) #endif /* _LINUX_NF_TABLES_H */