1 #ifndef _LINUX_NF_TABLES_H
2 #define _LINUX_NF_TABLES_H
4 #define NFT_NAME_MAXLEN 256
5 #define NFT_TABLE_MAXNAMELEN NFT_NAME_MAXLEN
6 #define NFT_CHAIN_MAXNAMELEN NFT_NAME_MAXLEN
7 #define NFT_SET_MAXNAMELEN NFT_NAME_MAXLEN
8 #define NFT_OBJ_MAXNAMELEN NFT_NAME_MAXLEN
9 #define NFT_USERDATA_MAXLEN 256
12 * enum nft_registers - nf_tables registers
14 * nf_tables used to have five registers: a verdict register and four data
15 * registers of size 16. The data registers have been changed to 16 registers
16 * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
17 * map to areas of size 16, the 4 byte registers are addressed using
18 * NFT_REG32_00 - NFT_REG32_15.
45 #define NFT_REG_MAX (__NFT_REG_MAX - 1)
47 #define NFT_REG_SIZE 16
48 #define NFT_REG32_SIZE 4
51 * enum nft_verdicts - nf_tables internal verdicts
53 * @NFT_CONTINUE: continue evaluation of the current rule
54 * @NFT_BREAK: terminate evaluation of the current rule
55 * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
56 * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
57 * @NFT_RETURN: return to the topmost chain on the jump stack
59 * The nf_tables verdicts share their numeric space with the netfilter verdicts.
70 * enum nf_tables_msg_types - nf_tables netlink message types
72 * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
73 * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
74 * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
75 * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
76 * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
77 * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
78 * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
79 * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
80 * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
81 * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
82 * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
83 * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
84 * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
85 * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
86 * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
87 * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
88 * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
89 * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
90 * @NFT_MSG_NEWOBJ: create a stateful object (enum nft_obj_attributes)
91 * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
92 * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
93 * @NFT_MSG_GETOBJ_RESET: get and reset a stateful object (enum nft_obj_attributes)
95 enum nf_tables_msg_types {
117 NFT_MSG_GETOBJ_RESET,
122 * enum nft_list_attributes - nf_tables generic list netlink attributes
124 * @NFTA_LIST_ELEM: list element (NLA_NESTED)
126 enum nft_list_attributes {
131 #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1)
134 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
136 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
137 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
138 * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
140 enum nft_hook_attributes {
147 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
150 * enum nft_table_flags - nf_tables table flags
152 * @NFT_TABLE_F_DORMANT: this table is not active
154 enum nft_table_flags {
155 NFT_TABLE_F_DORMANT = 0x1,
159 * enum nft_table_attributes - nf_tables table netlink attributes
161 * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
162 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
163 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
165 enum nft_table_attributes {
172 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)
175 * enum nft_chain_attributes - nf_tables chain netlink attributes
177 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
178 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
179 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
180 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
181 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
182 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
183 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
184 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
186 enum nft_chain_attributes {
199 #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1)
202 * enum nft_rule_attributes - nf_tables rule netlink attributes
204 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
205 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
206 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
207 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
208 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
209 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
210 * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
211 * @NFTA_RULE_ID: uniquely identifies a rule in a transaction (NLA_U32)
213 enum nft_rule_attributes {
218 NFTA_RULE_EXPRESSIONS,
226 #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1)
229 * enum nft_rule_compat_flags - nf_tables rule compat flags
231 * @NFT_RULE_COMPAT_F_INV: invert the check result
233 enum nft_rule_compat_flags {
234 NFT_RULE_COMPAT_F_INV = (1 << 1),
235 NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV,
239 * enum nft_rule_compat_attributes - nf_tables rule compat attributes
241 * @NFTA_RULE_COMPAT_PROTO: numeric value of handled protocol (NLA_U32)
242 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
244 enum nft_rule_compat_attributes {
245 NFTA_RULE_COMPAT_UNSPEC,
246 NFTA_RULE_COMPAT_PROTO,
247 NFTA_RULE_COMPAT_FLAGS,
248 __NFTA_RULE_COMPAT_MAX
250 #define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1)
253 * enum nft_set_flags - nf_tables set flags
255 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
256 * @NFT_SET_CONSTANT: set contents may not change while bound
257 * @NFT_SET_INTERVAL: set contains intervals
258 * @NFT_SET_MAP: set is used as a dictionary
259 * @NFT_SET_TIMEOUT: set uses timeouts
260 * @NFT_SET_EVAL: set contains expressions for evaluation
261 * @NFT_SET_OBJECT: set contains stateful objects
264 NFT_SET_ANONYMOUS = 0x1,
265 NFT_SET_CONSTANT = 0x2,
266 NFT_SET_INTERVAL = 0x4,
268 NFT_SET_TIMEOUT = 0x10,
270 NFT_SET_OBJECT = 0x40,
274 * enum nft_set_policies - set selection policy
276 * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
277 * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
279 enum nft_set_policies {
280 NFT_SET_POL_PERFORMANCE,
285 * enum nft_set_desc_attributes - set element description
287 * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
289 enum nft_set_desc_attributes {
290 NFTA_SET_DESC_UNSPEC,
294 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1)
297 * enum nft_set_attributes - nf_tables set netlink attributes
299 * @NFTA_SET_TABLE: table name (NLA_STRING)
300 * @NFTA_SET_NAME: set name (NLA_STRING)
301 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
302 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
303 * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
304 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
305 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
306 * @NFTA_SET_POLICY: selection policy (NLA_U32)
307 * @NFTA_SET_DESC: set description (NLA_NESTED)
308 * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
309 * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
310 * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
311 * @NFTA_SET_USERDATA: user data (NLA_BINARY)
312 * @NFTA_SET_OBJ_TYPE: stateful object type (NLA_U32: NFT_OBJECT_*)
314 enum nft_set_attributes {
327 NFTA_SET_GC_INTERVAL,
333 #define NFTA_SET_MAX (__NFTA_SET_MAX - 1)
336 * enum nft_set_elem_flags - nf_tables set element flags
338 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
340 enum nft_set_elem_flags {
341 NFT_SET_ELEM_INTERVAL_END = 0x1,
345 * enum nft_set_elem_attributes - nf_tables set element netlink attributes
347 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
348 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
349 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
350 * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
351 * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
352 * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
353 * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
354 * @NFTA_SET_ELEM_OBJREF: stateful object reference (NLA_STRING)
356 enum nft_set_elem_attributes {
357 NFTA_SET_ELEM_UNSPEC,
361 NFTA_SET_ELEM_TIMEOUT,
362 NFTA_SET_ELEM_EXPIRATION,
363 NFTA_SET_ELEM_USERDATA,
366 NFTA_SET_ELEM_OBJREF,
369 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1)
372 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
374 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
375 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
376 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
377 * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
379 enum nft_set_elem_list_attributes {
380 NFTA_SET_ELEM_LIST_UNSPEC,
381 NFTA_SET_ELEM_LIST_TABLE,
382 NFTA_SET_ELEM_LIST_SET,
383 NFTA_SET_ELEM_LIST_ELEMENTS,
384 NFTA_SET_ELEM_LIST_SET_ID,
385 __NFTA_SET_ELEM_LIST_MAX
387 #define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1)
390 * enum nft_data_types - nf_tables data types
392 * @NFT_DATA_VALUE: generic data
393 * @NFT_DATA_VERDICT: netfilter verdict
395 * The type of data is usually determined by the kernel directly and is not
396 * explicitly specified by userspace. The only difference are sets, where
397 * userspace specifies the key and mapping data types.
399 * The values 0xffffff00-0xffffffff are reserved for internally used types.
400 * The remaining range can be freely used by userspace to encode types, all
401 * values are equivalent to NFT_DATA_VALUE.
403 enum nft_data_types {
405 NFT_DATA_VERDICT = 0xffffff00U,
408 #define NFT_DATA_RESERVED_MASK 0xffffff00U
411 * enum nft_data_attributes - nf_tables data netlink attributes
413 * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
414 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
416 enum nft_data_attributes {
422 #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1)
424 /* Maximum length of a value */
425 #define NFT_DATA_VALUE_MAXLEN 64
428 * enum nft_verdict_attributes - nf_tables verdict netlink attributes
430 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
431 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
433 enum nft_verdict_attributes {
439 #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1)
442 * enum nft_expr_attributes - nf_tables expression netlink attributes
444 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
445 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
447 enum nft_expr_attributes {
453 #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1)
456 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
458 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
459 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
461 enum nft_immediate_attributes {
462 NFTA_IMMEDIATE_UNSPEC,
467 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1)
470 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
472 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
473 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
474 * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
475 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
476 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
478 * The bitwise expression performs the following operation:
480 * dreg = (sreg & mask) ^ xor
482 * which allow to express all bitwise operations:
490 enum nft_bitwise_attributes {
499 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1)
502 * enum nft_byteorder_ops - nf_tables byteorder operators
504 * @NFT_BYTEORDER_NTOH: network to host operator
505 * @NFT_BYTEORDER_HTON: host to network operator
507 enum nft_byteorder_ops {
513 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
515 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
516 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
517 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
518 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
519 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
521 enum nft_byteorder_attributes {
522 NFTA_BYTEORDER_UNSPEC,
530 #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1)
533 * enum nft_cmp_ops - nf_tables relational operator
536 * @NFT_CMP_NEQ: not equal
537 * @NFT_CMP_LT: less than
538 * @NFT_CMP_LTE: less than or equal to
539 * @NFT_CMP_GT: greater than
540 * @NFT_CMP_GTE: greater than or equal to
552 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
554 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
555 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
556 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
558 enum nft_cmp_attributes {
565 #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1)
568 * enum nft_range_ops - nf_tables range operator
570 * @NFT_RANGE_EQ: equal
571 * @NFT_RANGE_NEQ: not equal
579 * enum nft_range_attributes - nf_tables range expression netlink attributes
581 * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
582 * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
583 * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
584 * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
586 enum nft_range_attributes {
590 NFTA_RANGE_FROM_DATA,
594 #define NFTA_RANGE_MAX (__NFTA_RANGE_MAX - 1)
596 enum nft_lookup_flags {
597 NFT_LOOKUP_F_INV = (1 << 0),
601 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
603 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
604 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
605 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
606 * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
607 * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
609 enum nft_lookup_attributes {
618 #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1)
620 enum nft_dynset_ops {
622 NFT_DYNSET_OP_UPDATE,
625 enum nft_dynset_flags {
626 NFT_DYNSET_F_INV = (1 << 0),
630 * enum nft_dynset_attributes - dynset expression attributes
632 * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
633 * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
634 * @NFTA_DYNSET_OP: operation (NLA_U32)
635 * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
636 * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
637 * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
638 * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
639 * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
641 enum nft_dynset_attributes {
643 NFTA_DYNSET_SET_NAME,
646 NFTA_DYNSET_SREG_KEY,
647 NFTA_DYNSET_SREG_DATA,
654 #define NFTA_DYNSET_MAX (__NFTA_DYNSET_MAX - 1)
657 * enum nft_payload_bases - nf_tables payload expression offset bases
659 * @NFT_PAYLOAD_LL_HEADER: link layer header
660 * @NFT_PAYLOAD_NETWORK_HEADER: network header
661 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
663 enum nft_payload_bases {
664 NFT_PAYLOAD_LL_HEADER,
665 NFT_PAYLOAD_NETWORK_HEADER,
666 NFT_PAYLOAD_TRANSPORT_HEADER,
670 * enum nft_payload_csum_types - nf_tables payload expression checksum types
672 * @NFT_PAYLOAD_CSUM_NONE: no checksumming
673 * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
675 enum nft_payload_csum_types {
676 NFT_PAYLOAD_CSUM_NONE,
677 NFT_PAYLOAD_CSUM_INET,
680 enum nft_payload_csum_flags {
681 NFT_PAYLOAD_L4CSUM_PSEUDOHDR = (1 << 0),
685 * enum nft_payload_attributes - nf_tables payload expression netlink attributes
687 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
688 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
689 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
690 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
691 * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
692 * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
693 * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
694 * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
696 enum nft_payload_attributes {
703 NFTA_PAYLOAD_CSUM_TYPE,
704 NFTA_PAYLOAD_CSUM_OFFSET,
705 NFTA_PAYLOAD_CSUM_FLAGS,
708 #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1)
710 enum nft_exthdr_flags {
711 NFT_EXTHDR_F_PRESENT = (1 << 0),
715 * enum nft_exthdr_op - nf_tables match options
717 * @NFT_EXTHDR_OP_IPV6: match against ipv6 extension headers
718 * @NFT_EXTHDR_OP_TCP: match against tcp options
722 NFT_EXTHDR_OP_TCPOPT,
725 #define NFT_EXTHDR_OP_MAX (__NFT_EXTHDR_OP_MAX - 1)
728 * enum nft_exthdr_attributes - nf_tables extension header expression netlink attributes
730 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
731 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
732 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
733 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
734 * @NFTA_EXTHDR_FLAGS: extension header flags (NLA_U32)
735 * @NFTA_EXTHDR_OP: option match type (NLA_U32)
736 * @NFTA_EXTHDR_SREG: option match type (NLA_U32)
738 enum nft_exthdr_attributes {
749 #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1)
752 * enum nft_meta_keys - nf_tables meta expression keys
754 * @NFT_META_LEN: packet length (skb->len)
755 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
756 * @NFT_META_PRIORITY: packet priority (skb->priority)
757 * @NFT_META_MARK: packet mark (skb->mark)
758 * @NFT_META_IIF: packet input interface index (dev->ifindex)
759 * @NFT_META_OIF: packet output interface index (dev->ifindex)
760 * @NFT_META_IIFNAME: packet input interface name (dev->name)
761 * @NFT_META_OIFNAME: packet output interface name (dev->name)
762 * @NFT_META_IIFTYPE: packet input interface type (dev->type)
763 * @NFT_META_OIFTYPE: packet output interface type (dev->type)
764 * @NFT_META_SKUID: originating socket UID (fsuid)
765 * @NFT_META_SKGID: originating socket GID (fsgid)
766 * @NFT_META_NFTRACE: packet nftrace bit
767 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
768 * @NFT_META_SECMARK: packet secmark (skb->secmark)
769 * @NFT_META_NFPROTO: netfilter protocol
770 * @NFT_META_L4PROTO: layer 4 protocol number
771 * @NFT_META_BRI_IIFNAME: packet input bridge interface name
772 * @NFT_META_BRI_OIFNAME: packet output bridge interface name
773 * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
774 * @NFT_META_CPU: cpu id through smp_processor_id()
775 * @NFT_META_IIFGROUP: packet input interface group
776 * @NFT_META_OIFGROUP: packet output interface group
777 * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
778 * @NFT_META_PRANDOM: a 32bit pseudo-random number
798 NFT_META_BRI_IIFNAME,
799 NFT_META_BRI_OIFNAME,
809 * enum nft_rt_keys - nf_tables routing expression keys
811 * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
812 * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
813 * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
814 * @NFT_RT_TCPMSS: fetch current path tcp mss
824 * enum nft_hash_types - nf_tables hash expression types
826 * @NFT_HASH_JENKINS: Jenkins Hash
827 * @NFT_HASH_SYM: Symmetric Hash
829 enum nft_hash_types {
835 * enum nft_hash_attributes - nf_tables hash expression netlink attributes
837 * @NFTA_HASH_SREG: source register (NLA_U32)
838 * @NFTA_HASH_DREG: destination register (NLA_U32)
839 * @NFTA_HASH_LEN: source data length (NLA_U32)
840 * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
841 * @NFTA_HASH_SEED: seed value (NLA_U32)
842 * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
843 * @NFTA_HASH_TYPE: hash operation (NLA_U32: nft_hash_types)
845 enum nft_hash_attributes {
856 #define NFTA_HASH_MAX (__NFTA_HASH_MAX - 1)
859 * enum nft_meta_attributes - nf_tables meta expression netlink attributes
861 * @NFTA_META_DREG: destination register (NLA_U32)
862 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
863 * @NFTA_META_SREG: source register (NLA_U32)
865 enum nft_meta_attributes {
872 #define NFTA_META_MAX (__NFTA_META_MAX - 1)
875 * enum nft_rt_attributes - nf_tables routing expression netlink attributes
877 * @NFTA_RT_DREG: destination register (NLA_U32)
878 * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
880 enum nft_rt_attributes {
886 #define NFTA_RT_MAX (__NFTA_RT_MAX - 1)
889 * enum nft_ct_keys - nf_tables ct expression keys
891 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
892 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
893 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
894 * @NFT_CT_MARK: conntrack mark value
895 * @NFT_CT_SECMARK: conntrack secmark value
896 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
897 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
898 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
899 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
900 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
901 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
902 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
903 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
904 * @NFT_CT_LABELS: conntrack labels
905 * @NFT_CT_PKTS: conntrack packets
906 * @NFT_CT_BYTES: conntrack bytes
907 * @NFT_CT_AVGPKT: conntrack average bytes per packet
908 * @NFT_CT_ZONE: conntrack zone
909 * @NFT_CT_EVENTMASK: ctnetlink events to be generated for this conntrack
934 * enum nft_ct_attributes - nf_tables ct expression netlink attributes
936 * @NFTA_CT_DREG: destination register (NLA_U32)
937 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
938 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
939 * @NFTA_CT_SREG: source register (NLA_U32)
941 enum nft_ct_attributes {
949 #define NFTA_CT_MAX (__NFTA_CT_MAX - 1)
951 enum nft_limit_type {
956 enum nft_limit_flags {
957 NFT_LIMIT_F_INV = (1 << 0),
961 * enum nft_limit_attributes - nf_tables limit expression netlink attributes
963 * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
964 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
965 * @NFTA_LIMIT_BURST: burst (NLA_U32)
966 * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
967 * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
969 enum nft_limit_attributes {
979 #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1)
982 * enum nft_counter_attributes - nf_tables counter expression netlink attributes
984 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
985 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
987 enum nft_counter_attributes {
990 NFTA_COUNTER_PACKETS,
994 #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1)
997 * enum nft_log_attributes - nf_tables log expression netlink attributes
999 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
1000 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
1001 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
1002 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
1003 * @NFTA_LOG_LEVEL: log level (NLA_U32)
1004 * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
1006 enum nft_log_attributes {
1011 NFTA_LOG_QTHRESHOLD,
1016 #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1)
1019 * enum nft_queue_attributes - nf_tables queue expression netlink attributes
1021 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
1022 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
1023 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
1024 * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
1026 enum nft_queue_attributes {
1031 NFTA_QUEUE_SREG_QNUM,
1034 #define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1)
1036 #define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */
1037 #define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */
1038 #define NFT_QUEUE_FLAG_MASK 0x03
1040 enum nft_quota_flags {
1041 NFT_QUOTA_F_INV = (1 << 0),
1042 NFT_QUOTA_F_DEPLETED = (1 << 1),
1046 * enum nft_quota_attributes - nf_tables quota expression netlink attributes
1048 * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
1049 * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
1050 * @NFTA_QUOTA_CONSUMED: quota already consumed in bytes (NLA_U64)
1052 enum nft_quota_attributes {
1057 NFTA_QUOTA_CONSUMED,
1060 #define NFTA_QUOTA_MAX (__NFTA_QUOTA_MAX - 1)
1063 * enum nft_reject_types - nf_tables reject expression reject types
1065 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
1066 * @NFT_REJECT_TCP_RST: reject using TCP RST
1067 * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
1069 enum nft_reject_types {
1070 NFT_REJECT_ICMP_UNREACH,
1072 NFT_REJECT_ICMPX_UNREACH,
1076 * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1078 * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1079 * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1080 * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1081 * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1083 * These codes are mapped to real ICMP and ICMPv6 codes.
1085 enum nft_reject_inet_code {
1086 NFT_REJECT_ICMPX_NO_ROUTE = 0,
1087 NFT_REJECT_ICMPX_PORT_UNREACH,
1088 NFT_REJECT_ICMPX_HOST_UNREACH,
1089 NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
1090 __NFT_REJECT_ICMPX_MAX
1092 #define NFT_REJECT_ICMPX_MAX (__NFT_REJECT_ICMPX_MAX - 1)
1095 * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1097 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1098 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1100 enum nft_reject_attributes {
1103 NFTA_REJECT_ICMP_CODE,
1106 #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1)
1109 * enum nft_nat_types - nf_tables nat expression NAT types
1111 * @NFT_NAT_SNAT: source NAT
1112 * @NFT_NAT_DNAT: destination NAT
1114 enum nft_nat_types {
1120 * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1122 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1123 * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1124 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1125 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1126 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1127 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1128 * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1130 enum nft_nat_attributes {
1134 NFTA_NAT_REG_ADDR_MIN,
1135 NFTA_NAT_REG_ADDR_MAX,
1136 NFTA_NAT_REG_PROTO_MIN,
1137 NFTA_NAT_REG_PROTO_MAX,
1141 #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1)
1144 * enum nft_masq_attributes - nf_tables masquerade expression attributes
1146 * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1147 * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1148 * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1150 enum nft_masq_attributes {
1153 NFTA_MASQ_REG_PROTO_MIN,
1154 NFTA_MASQ_REG_PROTO_MAX,
1157 #define NFTA_MASQ_MAX (__NFTA_MASQ_MAX - 1)
1160 * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1162 * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1163 * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1164 * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1166 enum nft_redir_attributes {
1168 NFTA_REDIR_REG_PROTO_MIN,
1169 NFTA_REDIR_REG_PROTO_MAX,
1173 #define NFTA_REDIR_MAX (__NFTA_REDIR_MAX - 1)
1176 * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1178 * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1179 * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1181 enum nft_dup_attributes {
1187 #define NFTA_DUP_MAX (__NFTA_DUP_MAX - 1)
1190 * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1192 * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1194 enum nft_fwd_attributes {
1199 #define NFTA_FWD_MAX (__NFTA_FWD_MAX - 1)
1202 * enum nft_objref_attributes - nf_tables stateful object expression netlink attributes
1204 * @NFTA_OBJREF_IMM_TYPE: object type for immediate reference (NLA_U32: nft_register)
1205 * @NFTA_OBJREF_IMM_NAME: object name for immediate reference (NLA_STRING)
1206 * @NFTA_OBJREF_SET_SREG: source register of the data to look for (NLA_U32: nft_registers)
1207 * @NFTA_OBJREF_SET_NAME: name of the set where to look for (NLA_STRING)
1208 * @NFTA_OBJREF_SET_ID: id of the set where to look for in this transaction (NLA_U32)
1210 enum nft_objref_attributes {
1212 NFTA_OBJREF_IMM_TYPE,
1213 NFTA_OBJREF_IMM_NAME,
1214 NFTA_OBJREF_SET_SREG,
1215 NFTA_OBJREF_SET_NAME,
1219 #define NFTA_OBJREF_MAX (__NFTA_OBJREF_MAX - 1)
1222 * enum nft_gen_attributes - nf_tables ruleset generation attributes
1224 * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1226 enum nft_gen_attributes {
1233 #define NFTA_GEN_MAX (__NFTA_GEN_MAX - 1)
1236 * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1238 * @NFTA_FIB_DREG: destination register (NLA_U32)
1239 * @NFTA_FIB_RESULT: desired result (NLA_U32)
1240 * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1242 * The FIB expression performs a route lookup according
1243 * to the packet data.
1245 enum nft_fib_attributes {
1252 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1254 enum nft_fib_result {
1255 NFT_FIB_RESULT_UNSPEC,
1257 NFT_FIB_RESULT_OIFNAME,
1258 NFT_FIB_RESULT_ADDRTYPE,
1259 __NFT_FIB_RESULT_MAX
1261 #define NFT_FIB_RESULT_MAX (__NFT_FIB_RESULT_MAX - 1)
1263 enum nft_fib_flags {
1264 NFTA_FIB_F_SADDR = 1 << 0, /* look up src */
1265 NFTA_FIB_F_DADDR = 1 << 1, /* look up dst */
1266 NFTA_FIB_F_MARK = 1 << 2, /* use skb->mark */
1267 NFTA_FIB_F_IIF = 1 << 3, /* restrict to iif */
1268 NFTA_FIB_F_OIF = 1 << 4, /* restrict to oif */
1269 NFTA_FIB_F_PRESENT = 1 << 5, /* check existence only */
1272 enum nft_ct_helper_attributes {
1273 NFTA_CT_HELPER_UNSPEC,
1274 NFTA_CT_HELPER_NAME,
1275 NFTA_CT_HELPER_L3PROTO,
1276 NFTA_CT_HELPER_L4PROTO,
1277 __NFTA_CT_HELPER_MAX,
1279 #define NFTA_CT_HELPER_MAX (__NFTA_CT_HELPER_MAX - 1)
1281 #define NFT_OBJECT_UNSPEC 0
1282 #define NFT_OBJECT_COUNTER 1
1283 #define NFT_OBJECT_QUOTA 2
1284 #define NFT_OBJECT_CT_HELPER 3
1285 #define NFT_OBJECT_LIMIT 4
1286 #define __NFT_OBJECT_MAX 5
1287 #define NFT_OBJECT_MAX (__NFT_OBJECT_MAX - 1)
1290 * enum nft_object_attributes - nf_tables stateful object netlink attributes
1292 * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
1293 * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
1294 * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
1295 * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
1296 * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
1298 enum nft_object_attributes {
1307 #define NFTA_OBJ_MAX (__NFTA_OBJ_MAX - 1)
1310 * enum nft_trace_attributes - nf_tables trace netlink attributes
1312 * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1313 * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1314 * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1315 * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1316 * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1317 * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1318 * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1319 * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1320 * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1321 * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1322 * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1323 * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1324 * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1325 * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1326 * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1327 * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1329 enum nft_trace_attributes {
1333 NFTA_TRACE_RULE_HANDLE,
1337 NFTA_TRACE_LL_HEADER,
1338 NFTA_TRACE_NETWORK_HEADER,
1339 NFTA_TRACE_TRANSPORT_HEADER,
1350 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1352 enum nft_trace_types {
1353 NFT_TRACETYPE_UNSPEC,
1354 NFT_TRACETYPE_POLICY,
1355 NFT_TRACETYPE_RETURN,
1359 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1362 * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1364 * @NFTA_NG_DREG: destination register (NLA_U32)
1365 * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1366 * @NFTA_NG_TYPE: operation type (NLA_U32)
1367 * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1369 enum nft_ng_attributes {
1377 #define NFTA_NG_MAX (__NFTA_NG_MAX - 1)
1384 #define NFT_NG_MAX (__NFT_NG_MAX - 1)
1386 #endif /* _LINUX_NF_TABLES_H */