1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _LINUX_NF_TABLES_H
3 #define _LINUX_NF_TABLES_H
5 #define NFT_NAME_MAXLEN 256
6 #define NFT_TABLE_MAXNAMELEN NFT_NAME_MAXLEN
7 #define NFT_CHAIN_MAXNAMELEN NFT_NAME_MAXLEN
8 #define NFT_SET_MAXNAMELEN NFT_NAME_MAXLEN
9 #define NFT_OBJ_MAXNAMELEN NFT_NAME_MAXLEN
10 #define NFT_USERDATA_MAXLEN 256
11 #define NFT_OSF_MAXGENRELEN 16
14 * enum nft_registers - nf_tables registers
16 * nf_tables used to have five registers: a verdict register and four data
17 * registers of size 16. The data registers have been changed to 16 registers
18 * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
19 * map to areas of size 16, the 4 byte registers are addressed using
20 * NFT_REG32_00 - NFT_REG32_15.
47 #define NFT_REG_MAX (__NFT_REG_MAX - 1)
49 #define NFT_REG_SIZE 16
50 #define NFT_REG32_SIZE 4
51 #define NFT_REG32_COUNT (NFT_REG32_15 - NFT_REG32_00 + 1)
54 * enum nft_verdicts - nf_tables internal verdicts
56 * @NFT_CONTINUE: continue evaluation of the current rule
57 * @NFT_BREAK: terminate evaluation of the current rule
58 * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
59 * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
60 * @NFT_RETURN: return to the topmost chain on the jump stack
62 * The nf_tables verdicts share their numeric space with the netfilter verdicts.
73 * enum nf_tables_msg_types - nf_tables netlink message types
75 * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
76 * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
77 * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
78 * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
79 * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
80 * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
81 * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
82 * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
83 * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
84 * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
85 * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
86 * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
87 * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
88 * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
89 * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
90 * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
91 * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
92 * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
93 * @NFT_MSG_NEWOBJ: create a stateful object (enum nft_obj_attributes)
94 * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
95 * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
96 * @NFT_MSG_GETOBJ_RESET: get and reset a stateful object (enum nft_obj_attributes)
97 * @NFT_MSG_NEWFLOWTABLE: add new flow table (enum nft_flowtable_attributes)
98 * @NFT_MSG_GETFLOWTABLE: get flow table (enum nft_flowtable_attributes)
99 * @NFT_MSG_DELFLOWTABLE: delete flow table (enum nft_flowtable_attributes)
100 * @NFT_MSG_GETRULE_RESET: get rules and reset stateful expressions (enum nft_obj_attributes)
101 * @NFT_MSG_DESTROYTABLE: destroy a table (enum nft_table_attributes)
102 * @NFT_MSG_DESTROYCHAIN: destroy a chain (enum nft_chain_attributes)
103 * @NFT_MSG_DESTROYRULE: destroy a rule (enum nft_rule_attributes)
104 * @NFT_MSG_DESTROYSET: destroy a set (enum nft_set_attributes)
105 * @NFT_MSG_DESTROYSETELEM: destroy a set element (enum nft_set_elem_attributes)
106 * @NFT_MSG_DESTROYOBJ: destroy a stateful object (enum nft_object_attributes)
107 * @NFT_MSG_DESTROYFLOWTABLE: destroy flow table (enum nft_flowtable_attributes)
108 * @NFT_MSG_GETSETELEM_RESET: get set elements and reset attached stateful expressions (enum nft_set_elem_attributes)
110 enum nf_tables_msg_types {
132 NFT_MSG_GETOBJ_RESET,
133 NFT_MSG_NEWFLOWTABLE,
134 NFT_MSG_GETFLOWTABLE,
135 NFT_MSG_DELFLOWTABLE,
136 NFT_MSG_GETRULE_RESET,
137 NFT_MSG_DESTROYTABLE,
138 NFT_MSG_DESTROYCHAIN,
141 NFT_MSG_DESTROYSETELEM,
143 NFT_MSG_DESTROYFLOWTABLE,
144 NFT_MSG_GETSETELEM_RESET,
149 * enum nft_list_attributes - nf_tables generic list netlink attributes
151 * @NFTA_LIST_ELEM: list element (NLA_NESTED)
153 enum nft_list_attributes {
158 #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1)
161 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
163 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
164 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
165 * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
166 * @NFTA_HOOK_DEVS: list of netdevices (NLA_NESTED)
168 enum nft_hook_attributes {
176 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
179 * enum nft_table_flags - nf_tables table flags
181 * @NFT_TABLE_F_DORMANT: this table is not active
183 enum nft_table_flags {
184 NFT_TABLE_F_DORMANT = 0x1,
185 NFT_TABLE_F_OWNER = 0x2,
187 #define NFT_TABLE_F_MASK (NFT_TABLE_F_DORMANT | \
191 * enum nft_table_attributes - nf_tables table netlink attributes
193 * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
194 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
195 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
196 * @NFTA_TABLE_USERDATA: user data (NLA_BINARY)
197 * @NFTA_TABLE_OWNER: owner of this table through netlink portID (NLA_U32)
199 enum nft_table_attributes {
210 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)
212 enum nft_chain_flags {
213 NFT_CHAIN_BASE = (1 << 0),
214 NFT_CHAIN_HW_OFFLOAD = (1 << 1),
215 NFT_CHAIN_BINDING = (1 << 2),
217 #define NFT_CHAIN_FLAGS (NFT_CHAIN_BASE | \
218 NFT_CHAIN_HW_OFFLOAD | \
222 * enum nft_chain_attributes - nf_tables chain netlink attributes
224 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
225 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
226 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
227 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
228 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
229 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
230 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
231 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
232 * @NFTA_CHAIN_FLAGS: chain flags
233 * @NFTA_CHAIN_ID: uniquely identifies a chain in a transaction (NLA_U32)
234 * @NFTA_CHAIN_USERDATA: user data (NLA_BINARY)
236 enum nft_chain_attributes {
252 #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1)
255 * enum nft_rule_attributes - nf_tables rule netlink attributes
257 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
258 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
259 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
260 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
261 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
262 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
263 * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
264 * @NFTA_RULE_ID: uniquely identifies a rule in a transaction (NLA_U32)
265 * @NFTA_RULE_POSITION_ID: transaction unique identifier of the previous rule (NLA_U32)
267 enum nft_rule_attributes {
272 NFTA_RULE_EXPRESSIONS,
278 NFTA_RULE_POSITION_ID,
282 #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1)
285 * enum nft_rule_compat_flags - nf_tables rule compat flags
287 * @NFT_RULE_COMPAT_F_INV: invert the check result
289 enum nft_rule_compat_flags {
290 NFT_RULE_COMPAT_F_INV = (1 << 1),
291 NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV,
295 * enum nft_rule_compat_attributes - nf_tables rule compat attributes
297 * @NFTA_RULE_COMPAT_PROTO: numeric value of handled protocol (NLA_U32)
298 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
300 enum nft_rule_compat_attributes {
301 NFTA_RULE_COMPAT_UNSPEC,
302 NFTA_RULE_COMPAT_PROTO,
303 NFTA_RULE_COMPAT_FLAGS,
304 __NFTA_RULE_COMPAT_MAX
306 #define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1)
309 * enum nft_set_flags - nf_tables set flags
311 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
312 * @NFT_SET_CONSTANT: set contents may not change while bound
313 * @NFT_SET_INTERVAL: set contains intervals
314 * @NFT_SET_MAP: set is used as a dictionary
315 * @NFT_SET_TIMEOUT: set uses timeouts
316 * @NFT_SET_EVAL: set can be updated from the evaluation path
317 * @NFT_SET_OBJECT: set contains stateful objects
318 * @NFT_SET_CONCAT: set contains a concatenation
319 * @NFT_SET_EXPR: set contains expressions
322 NFT_SET_ANONYMOUS = 0x1,
323 NFT_SET_CONSTANT = 0x2,
324 NFT_SET_INTERVAL = 0x4,
326 NFT_SET_TIMEOUT = 0x10,
328 NFT_SET_OBJECT = 0x40,
329 NFT_SET_CONCAT = 0x80,
330 NFT_SET_EXPR = 0x100,
334 * enum nft_set_policies - set selection policy
336 * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
337 * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
339 enum nft_set_policies {
340 NFT_SET_POL_PERFORMANCE,
345 * enum nft_set_desc_attributes - set element description
347 * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
348 * @NFTA_SET_DESC_CONCAT: description of field concatenation (NLA_NESTED)
350 enum nft_set_desc_attributes {
351 NFTA_SET_DESC_UNSPEC,
353 NFTA_SET_DESC_CONCAT,
356 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1)
359 * enum nft_set_field_attributes - attributes of concatenated fields
361 * @NFTA_SET_FIELD_LEN: length of single field, in bits (NLA_U32)
363 enum nft_set_field_attributes {
364 NFTA_SET_FIELD_UNSPEC,
368 #define NFTA_SET_FIELD_MAX (__NFTA_SET_FIELD_MAX - 1)
371 * enum nft_set_attributes - nf_tables set netlink attributes
373 * @NFTA_SET_TABLE: table name (NLA_STRING)
374 * @NFTA_SET_NAME: set name (NLA_STRING)
375 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
376 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
377 * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
378 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
379 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
380 * @NFTA_SET_POLICY: selection policy (NLA_U32)
381 * @NFTA_SET_DESC: set description (NLA_NESTED)
382 * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
383 * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
384 * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
385 * @NFTA_SET_USERDATA: user data (NLA_BINARY)
386 * @NFTA_SET_OBJ_TYPE: stateful object type (NLA_U32: NFT_OBJECT_*)
387 * @NFTA_SET_HANDLE: set handle (NLA_U64)
388 * @NFTA_SET_EXPR: set expression (NLA_NESTED: nft_expr_attributes)
389 * @NFTA_SET_EXPRESSIONS: list of expressions (NLA_NESTED: nft_list_attributes)
391 enum nft_set_attributes {
404 NFTA_SET_GC_INTERVAL,
410 NFTA_SET_EXPRESSIONS,
413 #define NFTA_SET_MAX (__NFTA_SET_MAX - 1)
416 * enum nft_set_elem_flags - nf_tables set element flags
418 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
419 * @NFT_SET_ELEM_CATCHALL: special catch-all element
421 enum nft_set_elem_flags {
422 NFT_SET_ELEM_INTERVAL_END = 0x1,
423 NFT_SET_ELEM_CATCHALL = 0x2,
427 * enum nft_set_elem_attributes - nf_tables set element netlink attributes
429 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
430 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
431 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
432 * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
433 * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
434 * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
435 * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
436 * @NFTA_SET_ELEM_OBJREF: stateful object reference (NLA_STRING)
437 * @NFTA_SET_ELEM_KEY_END: closing key value (NLA_NESTED: nft_data)
438 * @NFTA_SET_ELEM_EXPRESSIONS: list of expressions (NLA_NESTED: nft_list_attributes)
440 enum nft_set_elem_attributes {
441 NFTA_SET_ELEM_UNSPEC,
445 NFTA_SET_ELEM_TIMEOUT,
446 NFTA_SET_ELEM_EXPIRATION,
447 NFTA_SET_ELEM_USERDATA,
450 NFTA_SET_ELEM_OBJREF,
451 NFTA_SET_ELEM_KEY_END,
452 NFTA_SET_ELEM_EXPRESSIONS,
455 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1)
458 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
460 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
461 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
462 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
463 * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
465 enum nft_set_elem_list_attributes {
466 NFTA_SET_ELEM_LIST_UNSPEC,
467 NFTA_SET_ELEM_LIST_TABLE,
468 NFTA_SET_ELEM_LIST_SET,
469 NFTA_SET_ELEM_LIST_ELEMENTS,
470 NFTA_SET_ELEM_LIST_SET_ID,
471 __NFTA_SET_ELEM_LIST_MAX
473 #define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1)
476 * enum nft_data_types - nf_tables data types
478 * @NFT_DATA_VALUE: generic data
479 * @NFT_DATA_VERDICT: netfilter verdict
481 * The type of data is usually determined by the kernel directly and is not
482 * explicitly specified by userspace. The only difference are sets, where
483 * userspace specifies the key and mapping data types.
485 * The values 0xffffff00-0xffffffff are reserved for internally used types.
486 * The remaining range can be freely used by userspace to encode types, all
487 * values are equivalent to NFT_DATA_VALUE.
489 enum nft_data_types {
491 NFT_DATA_VERDICT = 0xffffff00U,
494 #define NFT_DATA_RESERVED_MASK 0xffffff00U
497 * enum nft_data_attributes - nf_tables data netlink attributes
499 * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
500 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
502 enum nft_data_attributes {
508 #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1)
510 /* Maximum length of a value */
511 #define NFT_DATA_VALUE_MAXLEN 64
514 * enum nft_verdict_attributes - nf_tables verdict netlink attributes
516 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
517 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
518 * @NFTA_VERDICT_CHAIN_ID: jump target chain ID (NLA_U32)
520 enum nft_verdict_attributes {
524 NFTA_VERDICT_CHAIN_ID,
527 #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1)
530 * enum nft_expr_attributes - nf_tables expression netlink attributes
532 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
533 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
535 enum nft_expr_attributes {
541 #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1)
544 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
546 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
547 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
549 enum nft_immediate_attributes {
550 NFTA_IMMEDIATE_UNSPEC,
555 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1)
558 * enum nft_bitwise_ops - nf_tables bitwise operations
560 * @NFT_BITWISE_BOOL: mask-and-xor operation used to implement NOT, AND, OR and
561 * XOR boolean operations
562 * @NFT_BITWISE_LSHIFT: left-shift operation
563 * @NFT_BITWISE_RSHIFT: right-shift operation
565 enum nft_bitwise_ops {
572 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
574 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
575 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
576 * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
577 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
578 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
579 * @NFTA_BITWISE_OP: type of operation (NLA_U32: nft_bitwise_ops)
580 * @NFTA_BITWISE_DATA: argument for non-boolean operations
581 * (NLA_NESTED: nft_data_attributes)
583 * The bitwise expression supports boolean and shift operations. It implements
584 * the boolean operations by performing the following operation:
586 * dreg = (sreg & mask) ^ xor
588 * with these mask and xor values:
596 enum nft_bitwise_attributes {
607 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1)
610 * enum nft_byteorder_ops - nf_tables byteorder operators
612 * @NFT_BYTEORDER_NTOH: network to host operator
613 * @NFT_BYTEORDER_HTON: host to network operator
615 enum nft_byteorder_ops {
621 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
623 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
624 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
625 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
626 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
627 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
629 enum nft_byteorder_attributes {
630 NFTA_BYTEORDER_UNSPEC,
638 #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1)
641 * enum nft_cmp_ops - nf_tables relational operator
644 * @NFT_CMP_NEQ: not equal
645 * @NFT_CMP_LT: less than
646 * @NFT_CMP_LTE: less than or equal to
647 * @NFT_CMP_GT: greater than
648 * @NFT_CMP_GTE: greater than or equal to
660 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
662 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
663 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
664 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
666 enum nft_cmp_attributes {
673 #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1)
676 * enum nft_range_ops - nf_tables range operator
678 * @NFT_RANGE_EQ: equal
679 * @NFT_RANGE_NEQ: not equal
687 * enum nft_range_attributes - nf_tables range expression netlink attributes
689 * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
690 * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_range_ops)
691 * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
692 * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
694 enum nft_range_attributes {
698 NFTA_RANGE_FROM_DATA,
702 #define NFTA_RANGE_MAX (__NFTA_RANGE_MAX - 1)
704 enum nft_lookup_flags {
705 NFT_LOOKUP_F_INV = (1 << 0),
709 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
711 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
712 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
713 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
714 * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
715 * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
717 enum nft_lookup_attributes {
726 #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1)
728 enum nft_dynset_ops {
730 NFT_DYNSET_OP_UPDATE,
731 NFT_DYNSET_OP_DELETE,
734 enum nft_dynset_flags {
735 NFT_DYNSET_F_INV = (1 << 0),
736 NFT_DYNSET_F_EXPR = (1 << 1),
740 * enum nft_dynset_attributes - dynset expression attributes
742 * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
743 * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
744 * @NFTA_DYNSET_OP: operation (NLA_U32)
745 * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
746 * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
747 * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
748 * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
749 * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
750 * @NFTA_DYNSET_EXPRESSIONS: list of expressions (NLA_NESTED: nft_list_attributes)
752 enum nft_dynset_attributes {
754 NFTA_DYNSET_SET_NAME,
757 NFTA_DYNSET_SREG_KEY,
758 NFTA_DYNSET_SREG_DATA,
763 NFTA_DYNSET_EXPRESSIONS,
766 #define NFTA_DYNSET_MAX (__NFTA_DYNSET_MAX - 1)
769 * enum nft_payload_bases - nf_tables payload expression offset bases
771 * @NFT_PAYLOAD_LL_HEADER: link layer header
772 * @NFT_PAYLOAD_NETWORK_HEADER: network header
773 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
774 * @NFT_PAYLOAD_INNER_HEADER: inner header / payload
776 enum nft_payload_bases {
777 NFT_PAYLOAD_LL_HEADER,
778 NFT_PAYLOAD_NETWORK_HEADER,
779 NFT_PAYLOAD_TRANSPORT_HEADER,
780 NFT_PAYLOAD_INNER_HEADER,
781 NFT_PAYLOAD_TUN_HEADER,
785 * enum nft_payload_csum_types - nf_tables payload expression checksum types
787 * @NFT_PAYLOAD_CSUM_NONE: no checksumming
788 * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
789 * @NFT_PAYLOAD_CSUM_SCTP: CRC-32c, for use in SCTP header (RFC 3309)
791 enum nft_payload_csum_types {
792 NFT_PAYLOAD_CSUM_NONE,
793 NFT_PAYLOAD_CSUM_INET,
794 NFT_PAYLOAD_CSUM_SCTP,
797 enum nft_payload_csum_flags {
798 NFT_PAYLOAD_L4CSUM_PSEUDOHDR = (1 << 0),
801 enum nft_inner_type {
802 NFT_INNER_UNSPEC = 0,
807 enum nft_inner_flags {
808 NFT_INNER_HDRSIZE = (1 << 0),
809 NFT_INNER_LL = (1 << 1),
810 NFT_INNER_NH = (1 << 2),
811 NFT_INNER_TH = (1 << 3),
813 #define NFT_INNER_MASK (NFT_INNER_HDRSIZE | NFT_INNER_LL | \
814 NFT_INNER_NH | NFT_INNER_TH)
816 enum nft_inner_attributes {
825 #define NFTA_INNER_MAX (__NFTA_INNER_MAX - 1)
828 * enum nft_payload_attributes - nf_tables payload expression netlink attributes
830 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
831 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
832 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
833 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
834 * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
835 * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
836 * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
837 * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
839 enum nft_payload_attributes {
846 NFTA_PAYLOAD_CSUM_TYPE,
847 NFTA_PAYLOAD_CSUM_OFFSET,
848 NFTA_PAYLOAD_CSUM_FLAGS,
851 #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1)
853 enum nft_exthdr_flags {
854 NFT_EXTHDR_F_PRESENT = (1 << 0),
858 * enum nft_exthdr_op - nf_tables match options
860 * @NFT_EXTHDR_OP_IPV6: match against ipv6 extension headers
861 * @NFT_EXTHDR_OP_TCP: match against tcp options
862 * @NFT_EXTHDR_OP_IPV4: match against ipv4 options
863 * @NFT_EXTHDR_OP_SCTP: match against sctp chunks
864 * @NFT_EXTHDR_OP_DCCP: match against dccp otions
868 NFT_EXTHDR_OP_TCPOPT,
874 #define NFT_EXTHDR_OP_MAX (__NFT_EXTHDR_OP_MAX - 1)
877 * enum nft_exthdr_attributes - nf_tables extension header expression netlink attributes
879 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
880 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
881 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
882 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
883 * @NFTA_EXTHDR_FLAGS: extension header flags (NLA_U32)
884 * @NFTA_EXTHDR_OP: option match type (NLA_U32)
885 * @NFTA_EXTHDR_SREG: source register (NLA_U32: nft_registers)
887 enum nft_exthdr_attributes {
898 #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1)
901 * enum nft_meta_keys - nf_tables meta expression keys
903 * @NFT_META_LEN: packet length (skb->len)
904 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
905 * @NFT_META_PRIORITY: packet priority (skb->priority)
906 * @NFT_META_MARK: packet mark (skb->mark)
907 * @NFT_META_IIF: packet input interface index (dev->ifindex)
908 * @NFT_META_OIF: packet output interface index (dev->ifindex)
909 * @NFT_META_IIFNAME: packet input interface name (dev->name)
910 * @NFT_META_OIFNAME: packet output interface name (dev->name)
911 * @NFT_META_IIFTYPE: packet input interface type (dev->type)
912 * @NFT_META_OIFTYPE: packet output interface type (dev->type)
913 * @NFT_META_SKUID: originating socket UID (fsuid)
914 * @NFT_META_SKGID: originating socket GID (fsgid)
915 * @NFT_META_NFTRACE: packet nftrace bit
916 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
917 * @NFT_META_SECMARK: packet secmark (skb->secmark)
918 * @NFT_META_NFPROTO: netfilter protocol
919 * @NFT_META_L4PROTO: layer 4 protocol number
920 * @NFT_META_BRI_IIFNAME: packet input bridge interface name
921 * @NFT_META_BRI_OIFNAME: packet output bridge interface name
922 * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
923 * @NFT_META_CPU: cpu id through smp_processor_id()
924 * @NFT_META_IIFGROUP: packet input interface group
925 * @NFT_META_OIFGROUP: packet output interface group
926 * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
927 * @NFT_META_PRANDOM: a 32bit pseudo-random number
928 * @NFT_META_SECPATH: boolean, secpath_exists (!!skb->sp)
929 * @NFT_META_IIFKIND: packet input interface kind name (dev->rtnl_link_ops->kind)
930 * @NFT_META_OIFKIND: packet output interface kind name (dev->rtnl_link_ops->kind)
931 * @NFT_META_BRI_IIFPVID: packet input bridge port pvid
932 * @NFT_META_BRI_IIFVPROTO: packet input bridge vlan proto
933 * @NFT_META_TIME_NS: time since epoch (in nanoseconds)
934 * @NFT_META_TIME_DAY: day of week (from 0 = Sunday to 6 = Saturday)
935 * @NFT_META_TIME_HOUR: hour of day (in seconds)
936 * @NFT_META_SDIF: slave device interface index
937 * @NFT_META_SDIFNAME: slave device interface name
938 * @NFT_META_BRI_BROUTE: packet br_netfilter_broute bit
950 #define NFT_META_IIFTYPE NFT_META_IFTYPE
959 NFT_META_BRI_IIFNAME,
960 NFT_META_BRI_OIFNAME,
970 NFT_META_BRI_IIFPVID,
971 NFT_META_BRI_IIFVPROTO,
982 * enum nft_rt_keys - nf_tables routing expression keys
984 * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
985 * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
986 * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
987 * @NFT_RT_TCPMSS: fetch current path tcp mss
988 * @NFT_RT_XFRM: boolean, skb->dst->xfrm != NULL
998 #define NFT_RT_MAX (__NFT_RT_MAX - 1)
1001 * enum nft_hash_types - nf_tables hash expression types
1003 * @NFT_HASH_JENKINS: Jenkins Hash
1004 * @NFT_HASH_SYM: Symmetric Hash
1006 enum nft_hash_types {
1012 * enum nft_hash_attributes - nf_tables hash expression netlink attributes
1014 * @NFTA_HASH_SREG: source register (NLA_U32)
1015 * @NFTA_HASH_DREG: destination register (NLA_U32)
1016 * @NFTA_HASH_LEN: source data length (NLA_U32)
1017 * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
1018 * @NFTA_HASH_SEED: seed value (NLA_U32)
1019 * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
1020 * @NFTA_HASH_TYPE: hash operation (NLA_U32: nft_hash_types)
1021 * @NFTA_HASH_SET_NAME: name of the map to lookup (NLA_STRING)
1022 * @NFTA_HASH_SET_ID: id of the map (NLA_U32)
1024 enum nft_hash_attributes {
1033 NFTA_HASH_SET_NAME, /* deprecated */
1034 NFTA_HASH_SET_ID, /* deprecated */
1037 #define NFTA_HASH_MAX (__NFTA_HASH_MAX - 1)
1040 * enum nft_meta_attributes - nf_tables meta expression netlink attributes
1042 * @NFTA_META_DREG: destination register (NLA_U32)
1043 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
1044 * @NFTA_META_SREG: source register (NLA_U32)
1046 enum nft_meta_attributes {
1053 #define NFTA_META_MAX (__NFTA_META_MAX - 1)
1056 * enum nft_rt_attributes - nf_tables routing expression netlink attributes
1058 * @NFTA_RT_DREG: destination register (NLA_U32)
1059 * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
1061 enum nft_rt_attributes {
1067 #define NFTA_RT_MAX (__NFTA_RT_MAX - 1)
1070 * enum nft_socket_attributes - nf_tables socket expression netlink attributes
1072 * @NFTA_SOCKET_KEY: socket key to match
1073 * @NFTA_SOCKET_DREG: destination register
1074 * @NFTA_SOCKET_LEVEL: cgroups2 ancestor level (only for cgroupsv2)
1076 enum nft_socket_attributes {
1083 #define NFTA_SOCKET_MAX (__NFTA_SOCKET_MAX - 1)
1086 * enum nft_socket_keys - nf_tables socket expression keys
1088 * @NFT_SOCKET_TRANSPARENT: Value of the IP(V6)_TRANSPARENT socket option
1089 * @NFT_SOCKET_MARK: Value of the socket mark
1090 * @NFT_SOCKET_WILDCARD: Whether the socket is zero-bound (e.g. 0.0.0.0 or ::0)
1091 * @NFT_SOCKET_CGROUPV2: Match on cgroups version 2
1093 enum nft_socket_keys {
1094 NFT_SOCKET_TRANSPARENT,
1096 NFT_SOCKET_WILDCARD,
1097 NFT_SOCKET_CGROUPV2,
1100 #define NFT_SOCKET_MAX (__NFT_SOCKET_MAX - 1)
1103 * enum nft_ct_keys - nf_tables ct expression keys
1105 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
1106 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
1107 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
1108 * @NFT_CT_MARK: conntrack mark value
1109 * @NFT_CT_SECMARK: conntrack secmark value
1110 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
1111 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
1112 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
1113 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address, deprecated)
1114 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address, deprecated)
1115 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
1116 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
1117 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
1118 * @NFT_CT_LABELS: conntrack labels
1119 * @NFT_CT_PKTS: conntrack packets
1120 * @NFT_CT_BYTES: conntrack bytes
1121 * @NFT_CT_AVGPKT: conntrack average bytes per packet
1122 * @NFT_CT_ZONE: conntrack zone
1123 * @NFT_CT_EVENTMASK: ctnetlink events to be generated for this conntrack
1124 * @NFT_CT_SRC_IP: conntrack layer 3 protocol source (IPv4 address)
1125 * @NFT_CT_DST_IP: conntrack layer 3 protocol destination (IPv4 address)
1126 * @NFT_CT_SRC_IP6: conntrack layer 3 protocol source (IPv6 address)
1127 * @NFT_CT_DST_IP6: conntrack layer 3 protocol destination (IPv6 address)
1128 * @NFT_CT_ID: conntrack id
1157 #define NFT_CT_MAX (__NFT_CT_MAX - 1)
1160 * enum nft_ct_attributes - nf_tables ct expression netlink attributes
1162 * @NFTA_CT_DREG: destination register (NLA_U32)
1163 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
1164 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
1165 * @NFTA_CT_SREG: source register (NLA_U32)
1167 enum nft_ct_attributes {
1175 #define NFTA_CT_MAX (__NFTA_CT_MAX - 1)
1178 * enum nft_flow_attributes - ct offload expression attributes
1179 * @NFTA_FLOW_TABLE_NAME: flow table name (NLA_STRING)
1181 enum nft_offload_attributes {
1183 NFTA_FLOW_TABLE_NAME,
1186 #define NFTA_FLOW_MAX (__NFTA_FLOW_MAX - 1)
1188 enum nft_limit_type {
1193 enum nft_limit_flags {
1194 NFT_LIMIT_F_INV = (1 << 0),
1198 * enum nft_limit_attributes - nf_tables limit expression netlink attributes
1200 * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
1201 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
1202 * @NFTA_LIMIT_BURST: burst (NLA_U32)
1203 * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
1204 * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
1206 enum nft_limit_attributes {
1216 #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1)
1218 enum nft_connlimit_flags {
1219 NFT_CONNLIMIT_F_INV = (1 << 0),
1223 * enum nft_connlimit_attributes - nf_tables connlimit expression netlink attributes
1225 * @NFTA_CONNLIMIT_COUNT: number of connections (NLA_U32)
1226 * @NFTA_CONNLIMIT_FLAGS: flags (NLA_U32: enum nft_connlimit_flags)
1228 enum nft_connlimit_attributes {
1229 NFTA_CONNLIMIT_UNSPEC,
1230 NFTA_CONNLIMIT_COUNT,
1231 NFTA_CONNLIMIT_FLAGS,
1232 __NFTA_CONNLIMIT_MAX
1234 #define NFTA_CONNLIMIT_MAX (__NFTA_CONNLIMIT_MAX - 1)
1237 * enum nft_counter_attributes - nf_tables counter expression netlink attributes
1239 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
1240 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
1242 enum nft_counter_attributes {
1243 NFTA_COUNTER_UNSPEC,
1245 NFTA_COUNTER_PACKETS,
1249 #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1)
1252 * enum nft_last_attributes - nf_tables last expression netlink attributes
1254 * @NFTA_LAST_SET: last update has been set, zero means never updated (NLA_U32)
1255 * @NFTA_LAST_MSECS: milliseconds since last update (NLA_U64)
1257 enum nft_last_attributes {
1264 #define NFTA_LAST_MAX (__NFTA_LAST_MAX - 1)
1267 * enum nft_log_attributes - nf_tables log expression netlink attributes
1269 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U16)
1270 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
1271 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
1272 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U16)
1273 * @NFTA_LOG_LEVEL: log level (NLA_U32)
1274 * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
1276 enum nft_log_attributes {
1281 NFTA_LOG_QTHRESHOLD,
1286 #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1)
1289 * enum nft_log_level - nf_tables log levels
1291 * @NFT_LOGLEVEL_EMERG: system is unusable
1292 * @NFT_LOGLEVEL_ALERT: action must be taken immediately
1293 * @NFT_LOGLEVEL_CRIT: critical conditions
1294 * @NFT_LOGLEVEL_ERR: error conditions
1295 * @NFT_LOGLEVEL_WARNING: warning conditions
1296 * @NFT_LOGLEVEL_NOTICE: normal but significant condition
1297 * @NFT_LOGLEVEL_INFO: informational
1298 * @NFT_LOGLEVEL_DEBUG: debug-level messages
1299 * @NFT_LOGLEVEL_AUDIT: enabling audit logging
1301 enum nft_log_level {
1306 NFT_LOGLEVEL_WARNING,
1307 NFT_LOGLEVEL_NOTICE,
1313 #define NFT_LOGLEVEL_MAX (__NFT_LOGLEVEL_MAX - 1)
1316 * enum nft_queue_attributes - nf_tables queue expression netlink attributes
1318 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
1319 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
1320 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
1321 * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
1323 enum nft_queue_attributes {
1328 NFTA_QUEUE_SREG_QNUM,
1331 #define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1)
1333 #define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */
1334 #define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */
1335 #define NFT_QUEUE_FLAG_MASK 0x03
1337 enum nft_quota_flags {
1338 NFT_QUOTA_F_INV = (1 << 0),
1339 NFT_QUOTA_F_DEPLETED = (1 << 1),
1343 * enum nft_quota_attributes - nf_tables quota expression netlink attributes
1345 * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
1346 * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
1347 * @NFTA_QUOTA_CONSUMED: quota already consumed in bytes (NLA_U64)
1349 enum nft_quota_attributes {
1354 NFTA_QUOTA_CONSUMED,
1357 #define NFTA_QUOTA_MAX (__NFTA_QUOTA_MAX - 1)
1360 * enum nft_secmark_attributes - nf_tables secmark object netlink attributes
1362 * @NFTA_SECMARK_CTX: security context (NLA_STRING)
1364 enum nft_secmark_attributes {
1365 NFTA_SECMARK_UNSPEC,
1369 #define NFTA_SECMARK_MAX (__NFTA_SECMARK_MAX - 1)
1371 /* Max security context length */
1372 #define NFT_SECMARK_CTX_MAXLEN 256
1375 * enum nft_reject_types - nf_tables reject expression reject types
1377 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
1378 * @NFT_REJECT_TCP_RST: reject using TCP RST
1379 * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
1381 enum nft_reject_types {
1382 NFT_REJECT_ICMP_UNREACH,
1384 NFT_REJECT_ICMPX_UNREACH,
1388 * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1390 * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1391 * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1392 * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1393 * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1395 * These codes are mapped to real ICMP and ICMPv6 codes.
1397 enum nft_reject_inet_code {
1398 NFT_REJECT_ICMPX_NO_ROUTE = 0,
1399 NFT_REJECT_ICMPX_PORT_UNREACH,
1400 NFT_REJECT_ICMPX_HOST_UNREACH,
1401 NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
1402 __NFT_REJECT_ICMPX_MAX
1404 #define NFT_REJECT_ICMPX_MAX (__NFT_REJECT_ICMPX_MAX - 1)
1407 * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1409 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1410 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1412 enum nft_reject_attributes {
1415 NFTA_REJECT_ICMP_CODE,
1418 #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1)
1421 * enum nft_nat_types - nf_tables nat expression NAT types
1423 * @NFT_NAT_SNAT: source NAT
1424 * @NFT_NAT_DNAT: destination NAT
1426 enum nft_nat_types {
1432 * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1434 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1435 * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1436 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1437 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1438 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1439 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1440 * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1442 enum nft_nat_attributes {
1446 NFTA_NAT_REG_ADDR_MIN,
1447 NFTA_NAT_REG_ADDR_MAX,
1448 NFTA_NAT_REG_PROTO_MIN,
1449 NFTA_NAT_REG_PROTO_MAX,
1453 #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1)
1456 * enum nft_tproxy_attributes - nf_tables tproxy expression netlink attributes
1458 * NFTA_TPROXY_FAMILY: Target address family (NLA_U32: nft_registers)
1459 * NFTA_TPROXY_REG_ADDR: Target address register (NLA_U32: nft_registers)
1460 * NFTA_TPROXY_REG_PORT: Target port register (NLA_U32: nft_registers)
1462 enum nft_tproxy_attributes {
1465 NFTA_TPROXY_REG_ADDR,
1466 NFTA_TPROXY_REG_PORT,
1469 #define NFTA_TPROXY_MAX (__NFTA_TPROXY_MAX - 1)
1472 * enum nft_masq_attributes - nf_tables masquerade expression attributes
1474 * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1475 * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1476 * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1478 enum nft_masq_attributes {
1481 NFTA_MASQ_REG_PROTO_MIN,
1482 NFTA_MASQ_REG_PROTO_MAX,
1485 #define NFTA_MASQ_MAX (__NFTA_MASQ_MAX - 1)
1488 * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1490 * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1491 * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1492 * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1494 enum nft_redir_attributes {
1496 NFTA_REDIR_REG_PROTO_MIN,
1497 NFTA_REDIR_REG_PROTO_MAX,
1501 #define NFTA_REDIR_MAX (__NFTA_REDIR_MAX - 1)
1504 * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1506 * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1507 * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1509 enum nft_dup_attributes {
1515 #define NFTA_DUP_MAX (__NFTA_DUP_MAX - 1)
1518 * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1520 * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1521 * @NFTA_FWD_SREG_ADDR: source register of destination address (NLA_U32: nft_register)
1522 * @NFTA_FWD_NFPROTO: layer 3 family of source register address (NLA_U32: enum nfproto)
1524 enum nft_fwd_attributes {
1531 #define NFTA_FWD_MAX (__NFTA_FWD_MAX - 1)
1534 * enum nft_objref_attributes - nf_tables stateful object expression netlink attributes
1536 * @NFTA_OBJREF_IMM_TYPE: object type for immediate reference (NLA_U32: nft_register)
1537 * @NFTA_OBJREF_IMM_NAME: object name for immediate reference (NLA_STRING)
1538 * @NFTA_OBJREF_SET_SREG: source register of the data to look for (NLA_U32: nft_registers)
1539 * @NFTA_OBJREF_SET_NAME: name of the set where to look for (NLA_STRING)
1540 * @NFTA_OBJREF_SET_ID: id of the set where to look for in this transaction (NLA_U32)
1542 enum nft_objref_attributes {
1544 NFTA_OBJREF_IMM_TYPE,
1545 NFTA_OBJREF_IMM_NAME,
1546 NFTA_OBJREF_SET_SREG,
1547 NFTA_OBJREF_SET_NAME,
1551 #define NFTA_OBJREF_MAX (__NFTA_OBJREF_MAX - 1)
1554 * enum nft_gen_attributes - nf_tables ruleset generation attributes
1556 * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1558 enum nft_gen_attributes {
1565 #define NFTA_GEN_MAX (__NFTA_GEN_MAX - 1)
1568 * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1570 * @NFTA_FIB_DREG: destination register (NLA_U32)
1571 * @NFTA_FIB_RESULT: desired result (NLA_U32)
1572 * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1574 * The FIB expression performs a route lookup according
1575 * to the packet data.
1577 enum nft_fib_attributes {
1584 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1586 enum nft_fib_result {
1587 NFT_FIB_RESULT_UNSPEC,
1589 NFT_FIB_RESULT_OIFNAME,
1590 NFT_FIB_RESULT_ADDRTYPE,
1591 __NFT_FIB_RESULT_MAX
1593 #define NFT_FIB_RESULT_MAX (__NFT_FIB_RESULT_MAX - 1)
1595 enum nft_fib_flags {
1596 NFTA_FIB_F_SADDR = 1 << 0, /* look up src */
1597 NFTA_FIB_F_DADDR = 1 << 1, /* look up dst */
1598 NFTA_FIB_F_MARK = 1 << 2, /* use skb->mark */
1599 NFTA_FIB_F_IIF = 1 << 3, /* restrict to iif */
1600 NFTA_FIB_F_OIF = 1 << 4, /* restrict to oif */
1601 NFTA_FIB_F_PRESENT = 1 << 5, /* check existence only */
1604 enum nft_ct_helper_attributes {
1605 NFTA_CT_HELPER_UNSPEC,
1606 NFTA_CT_HELPER_NAME,
1607 NFTA_CT_HELPER_L3PROTO,
1608 NFTA_CT_HELPER_L4PROTO,
1609 __NFTA_CT_HELPER_MAX,
1611 #define NFTA_CT_HELPER_MAX (__NFTA_CT_HELPER_MAX - 1)
1613 enum nft_ct_timeout_timeout_attributes {
1614 NFTA_CT_TIMEOUT_UNSPEC,
1615 NFTA_CT_TIMEOUT_L3PROTO,
1616 NFTA_CT_TIMEOUT_L4PROTO,
1617 NFTA_CT_TIMEOUT_DATA,
1618 __NFTA_CT_TIMEOUT_MAX,
1620 #define NFTA_CT_TIMEOUT_MAX (__NFTA_CT_TIMEOUT_MAX - 1)
1622 enum nft_ct_expectation_attributes {
1623 NFTA_CT_EXPECT_UNSPEC,
1624 NFTA_CT_EXPECT_L3PROTO,
1625 NFTA_CT_EXPECT_L4PROTO,
1626 NFTA_CT_EXPECT_DPORT,
1627 NFTA_CT_EXPECT_TIMEOUT,
1628 NFTA_CT_EXPECT_SIZE,
1629 __NFTA_CT_EXPECT_MAX,
1631 #define NFTA_CT_EXPECT_MAX (__NFTA_CT_EXPECT_MAX - 1)
1633 #define NFT_OBJECT_UNSPEC 0
1634 #define NFT_OBJECT_COUNTER 1
1635 #define NFT_OBJECT_QUOTA 2
1636 #define NFT_OBJECT_CT_HELPER 3
1637 #define NFT_OBJECT_LIMIT 4
1638 #define NFT_OBJECT_CONNLIMIT 5
1639 #define NFT_OBJECT_TUNNEL 6
1640 #define NFT_OBJECT_CT_TIMEOUT 7
1641 #define NFT_OBJECT_SECMARK 8
1642 #define NFT_OBJECT_CT_EXPECT 9
1643 #define NFT_OBJECT_SYNPROXY 10
1644 #define __NFT_OBJECT_MAX 11
1645 #define NFT_OBJECT_MAX (__NFT_OBJECT_MAX - 1)
1648 * enum nft_object_attributes - nf_tables stateful object netlink attributes
1650 * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
1651 * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
1652 * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
1653 * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
1654 * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
1655 * @NFTA_OBJ_HANDLE: object handle (NLA_U64)
1656 * @NFTA_OBJ_USERDATA: user data (NLA_BINARY)
1658 enum nft_object_attributes {
1670 #define NFTA_OBJ_MAX (__NFTA_OBJ_MAX - 1)
1673 * enum nft_flowtable_flags - nf_tables flowtable flags
1675 * @NFT_FLOWTABLE_HW_OFFLOAD: flowtable hardware offload is enabled
1676 * @NFT_FLOWTABLE_COUNTER: enable flow counters
1678 enum nft_flowtable_flags {
1679 NFT_FLOWTABLE_HW_OFFLOAD = 0x1,
1680 NFT_FLOWTABLE_COUNTER = 0x2,
1681 NFT_FLOWTABLE_MASK = (NFT_FLOWTABLE_HW_OFFLOAD |
1682 NFT_FLOWTABLE_COUNTER)
1686 * enum nft_flowtable_attributes - nf_tables flow table netlink attributes
1688 * @NFTA_FLOWTABLE_TABLE: name of the table containing the expression (NLA_STRING)
1689 * @NFTA_FLOWTABLE_NAME: name of this flow table (NLA_STRING)
1690 * @NFTA_FLOWTABLE_HOOK: netfilter hook configuration(NLA_U32)
1691 * @NFTA_FLOWTABLE_USE: number of references to this flow table (NLA_U32)
1692 * @NFTA_FLOWTABLE_HANDLE: object handle (NLA_U64)
1693 * @NFTA_FLOWTABLE_FLAGS: flags (NLA_U32)
1695 enum nft_flowtable_attributes {
1696 NFTA_FLOWTABLE_UNSPEC,
1697 NFTA_FLOWTABLE_TABLE,
1698 NFTA_FLOWTABLE_NAME,
1699 NFTA_FLOWTABLE_HOOK,
1701 NFTA_FLOWTABLE_HANDLE,
1703 NFTA_FLOWTABLE_FLAGS,
1704 __NFTA_FLOWTABLE_MAX
1706 #define NFTA_FLOWTABLE_MAX (__NFTA_FLOWTABLE_MAX - 1)
1709 * enum nft_flowtable_hook_attributes - nf_tables flow table hook netlink attributes
1711 * @NFTA_FLOWTABLE_HOOK_NUM: netfilter hook number (NLA_U32)
1712 * @NFTA_FLOWTABLE_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
1713 * @NFTA_FLOWTABLE_HOOK_DEVS: input devices this flow table is bound to (NLA_NESTED)
1715 enum nft_flowtable_hook_attributes {
1716 NFTA_FLOWTABLE_HOOK_UNSPEC,
1717 NFTA_FLOWTABLE_HOOK_NUM,
1718 NFTA_FLOWTABLE_HOOK_PRIORITY,
1719 NFTA_FLOWTABLE_HOOK_DEVS,
1720 __NFTA_FLOWTABLE_HOOK_MAX
1722 #define NFTA_FLOWTABLE_HOOK_MAX (__NFTA_FLOWTABLE_HOOK_MAX - 1)
1725 * enum nft_osf_attributes - nftables osf expression netlink attributes
1727 * @NFTA_OSF_DREG: destination register (NLA_U32: nft_registers)
1728 * @NFTA_OSF_TTL: Value of the TTL osf option (NLA_U8)
1729 * @NFTA_OSF_FLAGS: flags (NLA_U32)
1731 enum nft_osf_attributes {
1738 #define NFTA_OSF_MAX (__NFTA_OSF_MAX - 1)
1740 enum nft_osf_flags {
1741 NFT_OSF_F_VERSION = (1 << 0),
1745 * enum nft_synproxy_attributes - nf_tables synproxy expression netlink attributes
1747 * @NFTA_SYNPROXY_MSS: mss value sent to the backend (NLA_U16)
1748 * @NFTA_SYNPROXY_WSCALE: wscale value sent to the backend (NLA_U8)
1749 * @NFTA_SYNPROXY_FLAGS: flags (NLA_U32)
1751 enum nft_synproxy_attributes {
1752 NFTA_SYNPROXY_UNSPEC,
1754 NFTA_SYNPROXY_WSCALE,
1755 NFTA_SYNPROXY_FLAGS,
1756 __NFTA_SYNPROXY_MAX,
1758 #define NFTA_SYNPROXY_MAX (__NFTA_SYNPROXY_MAX - 1)
1761 * enum nft_device_attributes - nf_tables device netlink attributes
1763 * @NFTA_DEVICE_NAME: name of this device (NLA_STRING)
1765 enum nft_devices_attributes {
1770 #define NFTA_DEVICE_MAX (__NFTA_DEVICE_MAX - 1)
1773 * enum nft_xfrm_attributes - nf_tables xfrm expr netlink attributes
1775 * @NFTA_XFRM_DREG: destination register (NLA_U32)
1776 * @NFTA_XFRM_KEY: enum nft_xfrm_keys (NLA_U32)
1777 * @NFTA_XFRM_DIR: direction (NLA_U8)
1778 * @NFTA_XFRM_SPNUM: index in secpath array (NLA_U32)
1780 enum nft_xfrm_attributes {
1788 #define NFTA_XFRM_MAX (__NFTA_XFRM_MAX - 1)
1790 enum nft_xfrm_keys {
1791 NFT_XFRM_KEY_UNSPEC,
1792 NFT_XFRM_KEY_DADDR_IP4,
1793 NFT_XFRM_KEY_DADDR_IP6,
1794 NFT_XFRM_KEY_SADDR_IP4,
1795 NFT_XFRM_KEY_SADDR_IP6,
1800 #define NFT_XFRM_KEY_MAX (__NFT_XFRM_KEY_MAX - 1)
1803 * enum nft_trace_attributes - nf_tables trace netlink attributes
1805 * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1806 * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1807 * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1808 * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1809 * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1810 * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1811 * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1812 * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1813 * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1814 * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1815 * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1816 * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1817 * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1818 * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1819 * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1820 * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1822 enum nft_trace_attributes {
1826 NFTA_TRACE_RULE_HANDLE,
1830 NFTA_TRACE_LL_HEADER,
1831 NFTA_TRACE_NETWORK_HEADER,
1832 NFTA_TRACE_TRANSPORT_HEADER,
1843 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1845 enum nft_trace_types {
1846 NFT_TRACETYPE_UNSPEC,
1847 NFT_TRACETYPE_POLICY,
1848 NFT_TRACETYPE_RETURN,
1852 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1855 * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1857 * @NFTA_NG_DREG: destination register (NLA_U32)
1858 * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1859 * @NFTA_NG_TYPE: operation type (NLA_U32)
1860 * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1861 * @NFTA_NG_SET_NAME: name of the map to lookup (NLA_STRING)
1862 * @NFTA_NG_SET_ID: id of the map (NLA_U32)
1864 enum nft_ng_attributes {
1870 NFTA_NG_SET_NAME, /* deprecated */
1871 NFTA_NG_SET_ID, /* deprecated */
1874 #define NFTA_NG_MAX (__NFTA_NG_MAX - 1)
1881 #define NFT_NG_MAX (__NFT_NG_MAX - 1)
1883 enum nft_tunnel_key_ip_attributes {
1884 NFTA_TUNNEL_KEY_IP_UNSPEC,
1885 NFTA_TUNNEL_KEY_IP_SRC,
1886 NFTA_TUNNEL_KEY_IP_DST,
1887 __NFTA_TUNNEL_KEY_IP_MAX
1889 #define NFTA_TUNNEL_KEY_IP_MAX (__NFTA_TUNNEL_KEY_IP_MAX - 1)
1891 enum nft_tunnel_ip6_attributes {
1892 NFTA_TUNNEL_KEY_IP6_UNSPEC,
1893 NFTA_TUNNEL_KEY_IP6_SRC,
1894 NFTA_TUNNEL_KEY_IP6_DST,
1895 NFTA_TUNNEL_KEY_IP6_FLOWLABEL,
1896 __NFTA_TUNNEL_KEY_IP6_MAX
1898 #define NFTA_TUNNEL_KEY_IP6_MAX (__NFTA_TUNNEL_KEY_IP6_MAX - 1)
1900 enum nft_tunnel_opts_attributes {
1901 NFTA_TUNNEL_KEY_OPTS_UNSPEC,
1902 NFTA_TUNNEL_KEY_OPTS_VXLAN,
1903 NFTA_TUNNEL_KEY_OPTS_ERSPAN,
1904 NFTA_TUNNEL_KEY_OPTS_GENEVE,
1905 __NFTA_TUNNEL_KEY_OPTS_MAX
1907 #define NFTA_TUNNEL_KEY_OPTS_MAX (__NFTA_TUNNEL_KEY_OPTS_MAX - 1)
1909 enum nft_tunnel_opts_vxlan_attributes {
1910 NFTA_TUNNEL_KEY_VXLAN_UNSPEC,
1911 NFTA_TUNNEL_KEY_VXLAN_GBP,
1912 __NFTA_TUNNEL_KEY_VXLAN_MAX
1914 #define NFTA_TUNNEL_KEY_VXLAN_MAX (__NFTA_TUNNEL_KEY_VXLAN_MAX - 1)
1916 enum nft_tunnel_opts_erspan_attributes {
1917 NFTA_TUNNEL_KEY_ERSPAN_UNSPEC,
1918 NFTA_TUNNEL_KEY_ERSPAN_VERSION,
1919 NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX,
1920 NFTA_TUNNEL_KEY_ERSPAN_V2_HWID,
1921 NFTA_TUNNEL_KEY_ERSPAN_V2_DIR,
1922 __NFTA_TUNNEL_KEY_ERSPAN_MAX
1924 #define NFTA_TUNNEL_KEY_ERSPAN_MAX (__NFTA_TUNNEL_KEY_ERSPAN_MAX - 1)
1926 enum nft_tunnel_opts_geneve_attributes {
1927 NFTA_TUNNEL_KEY_GENEVE_UNSPEC,
1928 NFTA_TUNNEL_KEY_GENEVE_CLASS,
1929 NFTA_TUNNEL_KEY_GENEVE_TYPE,
1930 NFTA_TUNNEL_KEY_GENEVE_DATA,
1931 __NFTA_TUNNEL_KEY_GENEVE_MAX
1933 #define NFTA_TUNNEL_KEY_GENEVE_MAX (__NFTA_TUNNEL_KEY_GENEVE_MAX - 1)
1935 enum nft_tunnel_flags {
1936 NFT_TUNNEL_F_ZERO_CSUM_TX = (1 << 0),
1937 NFT_TUNNEL_F_DONT_FRAGMENT = (1 << 1),
1938 NFT_TUNNEL_F_SEQ_NUMBER = (1 << 2),
1940 #define NFT_TUNNEL_F_MASK (NFT_TUNNEL_F_ZERO_CSUM_TX | \
1941 NFT_TUNNEL_F_DONT_FRAGMENT | \
1942 NFT_TUNNEL_F_SEQ_NUMBER)
1944 enum nft_tunnel_key_attributes {
1945 NFTA_TUNNEL_KEY_UNSPEC,
1948 NFTA_TUNNEL_KEY_IP6,
1949 NFTA_TUNNEL_KEY_FLAGS,
1950 NFTA_TUNNEL_KEY_TOS,
1951 NFTA_TUNNEL_KEY_TTL,
1952 NFTA_TUNNEL_KEY_SPORT,
1953 NFTA_TUNNEL_KEY_DPORT,
1954 NFTA_TUNNEL_KEY_OPTS,
1955 __NFTA_TUNNEL_KEY_MAX
1957 #define NFTA_TUNNEL_KEY_MAX (__NFTA_TUNNEL_KEY_MAX - 1)
1959 enum nft_tunnel_keys {
1964 #define NFT_TUNNEL_MAX (__NFT_TUNNEL_MAX - 1)
1966 enum nft_tunnel_mode {
1967 NFT_TUNNEL_MODE_NONE,
1970 __NFT_TUNNEL_MODE_MAX
1972 #define NFT_TUNNEL_MODE_MAX (__NFT_TUNNEL_MODE_MAX - 1)
1974 enum nft_tunnel_attributes {
1981 #define NFTA_TUNNEL_MAX (__NFTA_TUNNEL_MAX - 1)
1983 #endif /* _LINUX_NF_TABLES_H */