1 #ifndef _LINUX_NF_TABLES_H
2 #define _LINUX_NF_TABLES_H
4 #define NFT_TABLE_MAXNAMELEN 32
5 #define NFT_CHAIN_MAXNAMELEN 32
6 #define NFT_SET_MAXNAMELEN 32
7 #define NFT_OBJ_MAXNAMELEN 32
8 #define NFT_USERDATA_MAXLEN 256
11 * enum nft_registers - nf_tables registers
13 * nf_tables used to have five registers: a verdict register and four data
14 * registers of size 16. The data registers have been changed to 16 registers
15 * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
16 * map to areas of size 16, the 4 byte registers are addressed using
17 * NFT_REG32_00 - NFT_REG32_15.
44 #define NFT_REG_MAX (__NFT_REG_MAX - 1)
46 #define NFT_REG_SIZE 16
47 #define NFT_REG32_SIZE 4
50 * enum nft_verdicts - nf_tables internal verdicts
52 * @NFT_CONTINUE: continue evaluation of the current rule
53 * @NFT_BREAK: terminate evaluation of the current rule
54 * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
55 * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
56 * @NFT_RETURN: return to the topmost chain on the jump stack
58 * The nf_tables verdicts share their numeric space with the netfilter verdicts.
69 * enum nf_tables_msg_types - nf_tables netlink message types
71 * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
72 * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
73 * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
74 * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
75 * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
76 * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
77 * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
78 * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
79 * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
80 * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
81 * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
82 * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
83 * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
84 * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
85 * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
86 * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
87 * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
88 * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
89 * @NFT_MSG_NEWOBJ: create a stateful object (enum nft_obj_attributes)
90 * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
91 * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
92 * @NFT_MSG_GETOBJ_RESET: get and reset a stateful object (enum nft_obj_attributes)
94 enum nf_tables_msg_types {
116 NFT_MSG_GETOBJ_RESET,
121 * enum nft_list_attributes - nf_tables generic list netlink attributes
123 * @NFTA_LIST_ELEM: list element (NLA_NESTED)
125 enum nft_list_attributes {
130 #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1)
133 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
135 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
136 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
137 * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
139 enum nft_hook_attributes {
146 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
149 * enum nft_table_flags - nf_tables table flags
151 * @NFT_TABLE_F_DORMANT: this table is not active
153 enum nft_table_flags {
154 NFT_TABLE_F_DORMANT = 0x1,
158 * enum nft_table_attributes - nf_tables table netlink attributes
160 * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
161 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
162 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
164 enum nft_table_attributes {
171 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)
174 * enum nft_chain_attributes - nf_tables chain netlink attributes
176 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
177 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
178 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
179 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
180 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
181 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
182 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
183 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
185 enum nft_chain_attributes {
198 #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1)
201 * enum nft_rule_attributes - nf_tables rule netlink attributes
203 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
204 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
205 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
206 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
207 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
208 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
209 * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
211 enum nft_rule_attributes {
216 NFTA_RULE_EXPRESSIONS,
223 #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1)
226 * enum nft_rule_compat_flags - nf_tables rule compat flags
228 * @NFT_RULE_COMPAT_F_INV: invert the check result
230 enum nft_rule_compat_flags {
231 NFT_RULE_COMPAT_F_INV = (1 << 1),
232 NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV,
236 * enum nft_rule_compat_attributes - nf_tables rule compat attributes
238 * @NFTA_RULE_COMPAT_PROTO: numeric value of handled protocol (NLA_U32)
239 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
241 enum nft_rule_compat_attributes {
242 NFTA_RULE_COMPAT_UNSPEC,
243 NFTA_RULE_COMPAT_PROTO,
244 NFTA_RULE_COMPAT_FLAGS,
245 __NFTA_RULE_COMPAT_MAX
247 #define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1)
250 * enum nft_set_flags - nf_tables set flags
252 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
253 * @NFT_SET_CONSTANT: set contents may not change while bound
254 * @NFT_SET_INTERVAL: set contains intervals
255 * @NFT_SET_MAP: set is used as a dictionary
256 * @NFT_SET_TIMEOUT: set uses timeouts
257 * @NFT_SET_EVAL: set contains expressions for evaluation
258 * @NFT_SET_OBJECT: set contains stateful objects
261 NFT_SET_ANONYMOUS = 0x1,
262 NFT_SET_CONSTANT = 0x2,
263 NFT_SET_INTERVAL = 0x4,
265 NFT_SET_TIMEOUT = 0x10,
267 NFT_SET_OBJECT = 0x40,
271 * enum nft_set_policies - set selection policy
273 * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
274 * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
276 enum nft_set_policies {
277 NFT_SET_POL_PERFORMANCE,
282 * enum nft_set_desc_attributes - set element description
284 * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
286 enum nft_set_desc_attributes {
287 NFTA_SET_DESC_UNSPEC,
291 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1)
294 * enum nft_set_attributes - nf_tables set netlink attributes
296 * @NFTA_SET_TABLE: table name (NLA_STRING)
297 * @NFTA_SET_NAME: set name (NLA_STRING)
298 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
299 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
300 * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
301 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
302 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
303 * @NFTA_SET_POLICY: selection policy (NLA_U32)
304 * @NFTA_SET_DESC: set description (NLA_NESTED)
305 * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
306 * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
307 * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
308 * @NFTA_SET_USERDATA: user data (NLA_BINARY)
309 * @NFTA_SET_OBJ_TYPE: stateful object type (NLA_U32: NFT_OBJECT_*)
311 enum nft_set_attributes {
324 NFTA_SET_GC_INTERVAL,
330 #define NFTA_SET_MAX (__NFTA_SET_MAX - 1)
333 * enum nft_set_elem_flags - nf_tables set element flags
335 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
337 enum nft_set_elem_flags {
338 NFT_SET_ELEM_INTERVAL_END = 0x1,
342 * enum nft_set_elem_attributes - nf_tables set element netlink attributes
344 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
345 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
346 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
347 * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
348 * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
349 * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
350 * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
351 * @NFTA_SET_ELEM_OBJREF: stateful object reference (NLA_STRING)
353 enum nft_set_elem_attributes {
354 NFTA_SET_ELEM_UNSPEC,
358 NFTA_SET_ELEM_TIMEOUT,
359 NFTA_SET_ELEM_EXPIRATION,
360 NFTA_SET_ELEM_USERDATA,
363 NFTA_SET_ELEM_OBJREF,
366 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1)
369 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
371 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
372 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
373 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
374 * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
376 enum nft_set_elem_list_attributes {
377 NFTA_SET_ELEM_LIST_UNSPEC,
378 NFTA_SET_ELEM_LIST_TABLE,
379 NFTA_SET_ELEM_LIST_SET,
380 NFTA_SET_ELEM_LIST_ELEMENTS,
381 NFTA_SET_ELEM_LIST_SET_ID,
382 __NFTA_SET_ELEM_LIST_MAX
384 #define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1)
387 * enum nft_data_types - nf_tables data types
389 * @NFT_DATA_VALUE: generic data
390 * @NFT_DATA_VERDICT: netfilter verdict
392 * The type of data is usually determined by the kernel directly and is not
393 * explicitly specified by userspace. The only difference are sets, where
394 * userspace specifies the key and mapping data types.
396 * The values 0xffffff00-0xffffffff are reserved for internally used types.
397 * The remaining range can be freely used by userspace to encode types, all
398 * values are equivalent to NFT_DATA_VALUE.
400 enum nft_data_types {
402 NFT_DATA_VERDICT = 0xffffff00U,
405 #define NFT_DATA_RESERVED_MASK 0xffffff00U
408 * enum nft_data_attributes - nf_tables data netlink attributes
410 * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
411 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
413 enum nft_data_attributes {
419 #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1)
421 /* Maximum length of a value */
422 #define NFT_DATA_VALUE_MAXLEN 64
425 * enum nft_verdict_attributes - nf_tables verdict netlink attributes
427 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
428 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
430 enum nft_verdict_attributes {
436 #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1)
439 * enum nft_expr_attributes - nf_tables expression netlink attributes
441 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
442 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
444 enum nft_expr_attributes {
450 #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1)
453 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
455 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
456 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
458 enum nft_immediate_attributes {
459 NFTA_IMMEDIATE_UNSPEC,
464 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1)
467 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
469 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
470 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
471 * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
472 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
473 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
475 * The bitwise expression performs the following operation:
477 * dreg = (sreg & mask) ^ xor
479 * which allow to express all bitwise operations:
487 enum nft_bitwise_attributes {
496 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1)
499 * enum nft_byteorder_ops - nf_tables byteorder operators
501 * @NFT_BYTEORDER_NTOH: network to host operator
502 * @NFT_BYTEORDER_HTON: host to network operator
504 enum nft_byteorder_ops {
510 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
512 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
513 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
514 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
515 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
516 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
518 enum nft_byteorder_attributes {
519 NFTA_BYTEORDER_UNSPEC,
527 #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1)
530 * enum nft_cmp_ops - nf_tables relational operator
533 * @NFT_CMP_NEQ: not equal
534 * @NFT_CMP_LT: less than
535 * @NFT_CMP_LTE: less than or equal to
536 * @NFT_CMP_GT: greater than
537 * @NFT_CMP_GTE: greater than or equal to
549 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
551 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
552 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
553 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
555 enum nft_cmp_attributes {
562 #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1)
565 * enum nft_range_ops - nf_tables range operator
567 * @NFT_RANGE_EQ: equal
568 * @NFT_RANGE_NEQ: not equal
576 * enum nft_range_attributes - nf_tables range expression netlink attributes
578 * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
579 * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
580 * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
581 * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
583 enum nft_range_attributes {
587 NFTA_RANGE_FROM_DATA,
591 #define NFTA_RANGE_MAX (__NFTA_RANGE_MAX - 1)
593 enum nft_lookup_flags {
594 NFT_LOOKUP_F_INV = (1 << 0),
598 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
600 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
601 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
602 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
603 * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
604 * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
606 enum nft_lookup_attributes {
615 #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1)
617 enum nft_dynset_ops {
619 NFT_DYNSET_OP_UPDATE,
622 enum nft_dynset_flags {
623 NFT_DYNSET_F_INV = (1 << 0),
627 * enum nft_dynset_attributes - dynset expression attributes
629 * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
630 * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
631 * @NFTA_DYNSET_OP: operation (NLA_U32)
632 * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
633 * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
634 * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
635 * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
636 * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
638 enum nft_dynset_attributes {
640 NFTA_DYNSET_SET_NAME,
643 NFTA_DYNSET_SREG_KEY,
644 NFTA_DYNSET_SREG_DATA,
651 #define NFTA_DYNSET_MAX (__NFTA_DYNSET_MAX - 1)
654 * enum nft_payload_bases - nf_tables payload expression offset bases
656 * @NFT_PAYLOAD_LL_HEADER: link layer header
657 * @NFT_PAYLOAD_NETWORK_HEADER: network header
658 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
660 enum nft_payload_bases {
661 NFT_PAYLOAD_LL_HEADER,
662 NFT_PAYLOAD_NETWORK_HEADER,
663 NFT_PAYLOAD_TRANSPORT_HEADER,
667 * enum nft_payload_csum_types - nf_tables payload expression checksum types
669 * @NFT_PAYLOAD_CSUM_NONE: no checksumming
670 * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
672 enum nft_payload_csum_types {
673 NFT_PAYLOAD_CSUM_NONE,
674 NFT_PAYLOAD_CSUM_INET,
677 enum nft_payload_csum_flags {
678 NFT_PAYLOAD_L4CSUM_PSEUDOHDR = (1 << 0),
682 * enum nft_payload_attributes - nf_tables payload expression netlink attributes
684 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
685 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
686 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
687 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
688 * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
689 * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
690 * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
691 * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
693 enum nft_payload_attributes {
700 NFTA_PAYLOAD_CSUM_TYPE,
701 NFTA_PAYLOAD_CSUM_OFFSET,
702 NFTA_PAYLOAD_CSUM_FLAGS,
705 #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1)
708 * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
710 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
711 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
712 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
713 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
715 enum nft_exthdr_attributes {
723 #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1)
726 * enum nft_meta_keys - nf_tables meta expression keys
728 * @NFT_META_LEN: packet length (skb->len)
729 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
730 * @NFT_META_PRIORITY: packet priority (skb->priority)
731 * @NFT_META_MARK: packet mark (skb->mark)
732 * @NFT_META_IIF: packet input interface index (dev->ifindex)
733 * @NFT_META_OIF: packet output interface index (dev->ifindex)
734 * @NFT_META_IIFNAME: packet input interface name (dev->name)
735 * @NFT_META_OIFNAME: packet output interface name (dev->name)
736 * @NFT_META_IIFTYPE: packet input interface type (dev->type)
737 * @NFT_META_OIFTYPE: packet output interface type (dev->type)
738 * @NFT_META_SKUID: originating socket UID (fsuid)
739 * @NFT_META_SKGID: originating socket GID (fsgid)
740 * @NFT_META_NFTRACE: packet nftrace bit
741 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
742 * @NFT_META_SECMARK: packet secmark (skb->secmark)
743 * @NFT_META_NFPROTO: netfilter protocol
744 * @NFT_META_L4PROTO: layer 4 protocol number
745 * @NFT_META_BRI_IIFNAME: packet input bridge interface name
746 * @NFT_META_BRI_OIFNAME: packet output bridge interface name
747 * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
748 * @NFT_META_CPU: cpu id through smp_processor_id()
749 * @NFT_META_IIFGROUP: packet input interface group
750 * @NFT_META_OIFGROUP: packet output interface group
751 * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
752 * @NFT_META_PRANDOM: a 32bit pseudo-random number
772 NFT_META_BRI_IIFNAME,
773 NFT_META_BRI_OIFNAME,
783 * enum nft_rt_keys - nf_tables routing expression keys
785 * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
786 * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
787 * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
796 * enum nft_hash_attributes - nf_tables hash expression netlink attributes
798 * @NFTA_HASH_SREG: source register (NLA_U32)
799 * @NFTA_HASH_DREG: destination register (NLA_U32)
800 * @NFTA_HASH_LEN: source data length (NLA_U32)
801 * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
802 * @NFTA_HASH_SEED: seed value (NLA_U32)
803 * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
805 enum nft_hash_attributes {
815 #define NFTA_HASH_MAX (__NFTA_HASH_MAX - 1)
818 * enum nft_meta_attributes - nf_tables meta expression netlink attributes
820 * @NFTA_META_DREG: destination register (NLA_U32)
821 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
822 * @NFTA_META_SREG: source register (NLA_U32)
824 enum nft_meta_attributes {
831 #define NFTA_META_MAX (__NFTA_META_MAX - 1)
834 * enum nft_rt_attributes - nf_tables routing expression netlink attributes
836 * @NFTA_RT_DREG: destination register (NLA_U32)
837 * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
839 enum nft_rt_attributes {
845 #define NFTA_RT_MAX (__NFTA_RT_MAX - 1)
848 * enum nft_ct_keys - nf_tables ct expression keys
850 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
851 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
852 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
853 * @NFT_CT_MARK: conntrack mark value
854 * @NFT_CT_SECMARK: conntrack secmark value
855 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
856 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
857 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
858 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
859 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
860 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
861 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
862 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
863 * @NFT_CT_LABELS: conntrack labels
864 * @NFT_CT_PKTS: conntrack packets
865 * @NFT_CT_BYTES: conntrack bytes
866 * @NFT_CT_AVGPKT: conntrack average bytes per packet
889 * enum nft_ct_attributes - nf_tables ct expression netlink attributes
891 * @NFTA_CT_DREG: destination register (NLA_U32)
892 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
893 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
894 * @NFTA_CT_SREG: source register (NLA_U32)
896 enum nft_ct_attributes {
904 #define NFTA_CT_MAX (__NFTA_CT_MAX - 1)
906 enum nft_limit_type {
911 enum nft_limit_flags {
912 NFT_LIMIT_F_INV = (1 << 0),
916 * enum nft_limit_attributes - nf_tables limit expression netlink attributes
918 * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
919 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
920 * @NFTA_LIMIT_BURST: burst (NLA_U32)
921 * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
922 * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
924 enum nft_limit_attributes {
934 #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1)
937 * enum nft_counter_attributes - nf_tables counter expression netlink attributes
939 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
940 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
942 enum nft_counter_attributes {
945 NFTA_COUNTER_PACKETS,
949 #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1)
952 * enum nft_log_attributes - nf_tables log expression netlink attributes
954 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
955 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
956 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
957 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
958 * @NFTA_LOG_LEVEL: log level (NLA_U32)
959 * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
961 enum nft_log_attributes {
971 #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1)
974 * enum nft_queue_attributes - nf_tables queue expression netlink attributes
976 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
977 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
978 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
979 * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
981 enum nft_queue_attributes {
986 NFTA_QUEUE_SREG_QNUM,
989 #define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1)
991 #define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */
992 #define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */
993 #define NFT_QUEUE_FLAG_MASK 0x03
995 enum nft_quota_flags {
996 NFT_QUOTA_F_INV = (1 << 0),
997 NFT_QUOTA_F_DEPLETED = (1 << 1),
1001 * enum nft_quota_attributes - nf_tables quota expression netlink attributes
1003 * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
1004 * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
1005 * @NFTA_QUOTA_CONSUMED: quota already consumed in bytes (NLA_U64)
1007 enum nft_quota_attributes {
1012 NFTA_QUOTA_CONSUMED,
1015 #define NFTA_QUOTA_MAX (__NFTA_QUOTA_MAX - 1)
1018 * enum nft_reject_types - nf_tables reject expression reject types
1020 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
1021 * @NFT_REJECT_TCP_RST: reject using TCP RST
1022 * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
1024 enum nft_reject_types {
1025 NFT_REJECT_ICMP_UNREACH,
1027 NFT_REJECT_ICMPX_UNREACH,
1031 * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1033 * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1034 * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1035 * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1036 * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1038 * These codes are mapped to real ICMP and ICMPv6 codes.
1040 enum nft_reject_inet_code {
1041 NFT_REJECT_ICMPX_NO_ROUTE = 0,
1042 NFT_REJECT_ICMPX_PORT_UNREACH,
1043 NFT_REJECT_ICMPX_HOST_UNREACH,
1044 NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
1045 __NFT_REJECT_ICMPX_MAX
1047 #define NFT_REJECT_ICMPX_MAX (__NFT_REJECT_ICMPX_MAX - 1)
1050 * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1052 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1053 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1055 enum nft_reject_attributes {
1058 NFTA_REJECT_ICMP_CODE,
1061 #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1)
1064 * enum nft_nat_types - nf_tables nat expression NAT types
1066 * @NFT_NAT_SNAT: source NAT
1067 * @NFT_NAT_DNAT: destination NAT
1069 enum nft_nat_types {
1075 * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1077 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1078 * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1079 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1080 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1081 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1082 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1083 * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1085 enum nft_nat_attributes {
1089 NFTA_NAT_REG_ADDR_MIN,
1090 NFTA_NAT_REG_ADDR_MAX,
1091 NFTA_NAT_REG_PROTO_MIN,
1092 NFTA_NAT_REG_PROTO_MAX,
1096 #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1)
1099 * enum nft_masq_attributes - nf_tables masquerade expression attributes
1101 * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1102 * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1103 * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1105 enum nft_masq_attributes {
1108 NFTA_MASQ_REG_PROTO_MIN,
1109 NFTA_MASQ_REG_PROTO_MAX,
1112 #define NFTA_MASQ_MAX (__NFTA_MASQ_MAX - 1)
1115 * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1117 * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1118 * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1119 * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1121 enum nft_redir_attributes {
1123 NFTA_REDIR_REG_PROTO_MIN,
1124 NFTA_REDIR_REG_PROTO_MAX,
1128 #define NFTA_REDIR_MAX (__NFTA_REDIR_MAX - 1)
1131 * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1133 * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1134 * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1136 enum nft_dup_attributes {
1142 #define NFTA_DUP_MAX (__NFTA_DUP_MAX - 1)
1145 * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1147 * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1149 enum nft_fwd_attributes {
1154 #define NFTA_FWD_MAX (__NFTA_FWD_MAX - 1)
1157 * enum nft_objref_attributes - nf_tables stateful object expression netlink attributes
1159 * @NFTA_OBJREF_IMM_TYPE: object type for immediate reference (NLA_U32: nft_register)
1160 * @NFTA_OBJREF_IMM_NAME: object name for immediate reference (NLA_STRING)
1161 * @NFTA_OBJREF_SET_SREG: source register of the data to look for (NLA_U32: nft_registers)
1162 * @NFTA_OBJREF_SET_NAME: name of the set where to look for (NLA_STRING)
1163 * @NFTA_OBJREF_SET_ID: id of the set where to look for in this transaction (NLA_U32)
1165 enum nft_objref_attributes {
1167 NFTA_OBJREF_IMM_TYPE,
1168 NFTA_OBJREF_IMM_NAME,
1169 NFTA_OBJREF_SET_SREG,
1170 NFTA_OBJREF_SET_NAME,
1174 #define NFTA_OBJREF_MAX (__NFTA_OBJREF_MAX - 1)
1177 * enum nft_gen_attributes - nf_tables ruleset generation attributes
1179 * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1181 enum nft_gen_attributes {
1186 #define NFTA_GEN_MAX (__NFTA_GEN_MAX - 1)
1189 * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1191 * @NFTA_FIB_DREG: destination register (NLA_U32)
1192 * @NFTA_FIB_RESULT: desired result (NLA_U32)
1193 * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1195 * The FIB expression performs a route lookup according
1196 * to the packet data.
1198 enum nft_fib_attributes {
1205 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1207 enum nft_fib_result {
1208 NFT_FIB_RESULT_UNSPEC,
1210 NFT_FIB_RESULT_OIFNAME,
1211 NFT_FIB_RESULT_ADDRTYPE,
1212 __NFT_FIB_RESULT_MAX
1214 #define NFT_FIB_RESULT_MAX (__NFT_FIB_RESULT_MAX - 1)
1216 enum nft_fib_flags {
1217 NFTA_FIB_F_SADDR = 1 << 0, /* look up src */
1218 NFTA_FIB_F_DADDR = 1 << 1, /* look up dst */
1219 NFTA_FIB_F_MARK = 1 << 2, /* use skb->mark */
1220 NFTA_FIB_F_IIF = 1 << 3, /* restrict to iif */
1221 NFTA_FIB_F_OIF = 1 << 4, /* restrict to oif */
1224 #define NFT_OBJECT_UNSPEC 0
1225 #define NFT_OBJECT_COUNTER 1
1226 #define NFT_OBJECT_QUOTA 2
1227 #define __NFT_OBJECT_MAX 3
1228 #define NFT_OBJECT_MAX (__NFT_OBJECT_MAX - 1)
1231 * enum nft_object_attributes - nf_tables stateful object netlink attributes
1233 * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
1234 * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
1235 * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
1236 * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
1237 * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
1239 enum nft_object_attributes {
1248 #define NFTA_OBJ_MAX (__NFTA_OBJ_MAX - 1)
1251 * enum nft_trace_attributes - nf_tables trace netlink attributes
1253 * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1254 * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1255 * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1256 * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1257 * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1258 * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1259 * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1260 * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1261 * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1262 * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1263 * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1264 * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1265 * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1266 * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1267 * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1268 * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1270 enum nft_trace_attributes {
1274 NFTA_TRACE_RULE_HANDLE,
1278 NFTA_TRACE_LL_HEADER,
1279 NFTA_TRACE_NETWORK_HEADER,
1280 NFTA_TRACE_TRANSPORT_HEADER,
1291 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1293 enum nft_trace_types {
1294 NFT_TRACETYPE_UNSPEC,
1295 NFT_TRACETYPE_POLICY,
1296 NFT_TRACETYPE_RETURN,
1300 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1303 * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1305 * @NFTA_NG_DREG: destination register (NLA_U32)
1306 * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1307 * @NFTA_NG_TYPE: operation type (NLA_U32)
1308 * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1310 enum nft_ng_attributes {
1318 #define NFTA_NG_MAX (__NFTA_NG_MAX - 1)
1325 #define NFT_NG_MAX (__NFT_NG_MAX - 1)
1327 #endif /* _LINUX_NF_TABLES_H */