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_USERDATA_MAXLEN 256
9 * enum nft_registers - nf_tables registers
11 * nf_tables used to have five registers: a verdict register and four data
12 * registers of size 16. The data registers have been changed to 16 registers
13 * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
14 * map to areas of size 16, the 4 byte registers are addressed using
15 * NFT_REG32_00 - NFT_REG32_15.
42 #define NFT_REG_MAX (__NFT_REG_MAX - 1)
44 #define NFT_REG_SIZE 16
45 #define NFT_REG32_SIZE 4
48 * enum nft_verdicts - nf_tables internal verdicts
50 * @NFT_CONTINUE: continue evaluation of the current rule
51 * @NFT_BREAK: terminate evaluation of the current rule
52 * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
53 * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
54 * @NFT_RETURN: return to the topmost chain on the jump stack
56 * The nf_tables verdicts share their numeric space with the netfilter verdicts.
67 * enum nf_tables_msg_types - nf_tables netlink message types
69 * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
70 * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
71 * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
72 * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
73 * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
74 * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
75 * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
76 * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
77 * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
78 * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
79 * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
80 * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
81 * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
82 * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
83 * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
84 * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
85 * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
86 * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
88 enum nf_tables_msg_types {
111 * enum nft_list_attributes - nf_tables generic list netlink attributes
113 * @NFTA_LIST_ELEM: list element (NLA_NESTED)
115 enum nft_list_attributes {
120 #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1)
123 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
125 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
126 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
127 * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
129 enum nft_hook_attributes {
136 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
139 * enum nft_table_flags - nf_tables table flags
141 * @NFT_TABLE_F_DORMANT: this table is not active
143 enum nft_table_flags {
144 NFT_TABLE_F_DORMANT = 0x1,
148 * enum nft_table_attributes - nf_tables table netlink attributes
150 * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
151 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
152 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
154 enum nft_table_attributes {
161 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)
164 * enum nft_chain_attributes - nf_tables chain netlink attributes
166 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
167 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
168 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
169 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
170 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
171 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
172 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
173 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
175 enum nft_chain_attributes {
187 #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1)
190 * enum nft_rule_attributes - nf_tables rule netlink attributes
192 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
193 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
194 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
195 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
196 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
197 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
198 * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
200 enum nft_rule_attributes {
205 NFTA_RULE_EXPRESSIONS,
211 #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1)
214 * enum nft_rule_compat_flags - nf_tables rule compat flags
216 * @NFT_RULE_COMPAT_F_INV: invert the check result
218 enum nft_rule_compat_flags {
219 NFT_RULE_COMPAT_F_INV = (1 << 1),
220 NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV,
224 * enum nft_rule_compat_attributes - nf_tables rule compat attributes
226 * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
227 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
229 enum nft_rule_compat_attributes {
230 NFTA_RULE_COMPAT_UNSPEC,
231 NFTA_RULE_COMPAT_PROTO,
232 NFTA_RULE_COMPAT_FLAGS,
233 __NFTA_RULE_COMPAT_MAX
235 #define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1)
238 * enum nft_set_flags - nf_tables set flags
240 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
241 * @NFT_SET_CONSTANT: set contents may not change while bound
242 * @NFT_SET_INTERVAL: set contains intervals
243 * @NFT_SET_MAP: set is used as a dictionary
244 * @NFT_SET_TIMEOUT: set uses timeouts
245 * @NFT_SET_EVAL: set contains expressions for evaluation
248 NFT_SET_ANONYMOUS = 0x1,
249 NFT_SET_CONSTANT = 0x2,
250 NFT_SET_INTERVAL = 0x4,
252 NFT_SET_TIMEOUT = 0x10,
257 * enum nft_set_policies - set selection policy
259 * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
260 * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
262 enum nft_set_policies {
263 NFT_SET_POL_PERFORMANCE,
268 * enum nft_set_desc_attributes - set element description
270 * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
272 enum nft_set_desc_attributes {
273 NFTA_SET_DESC_UNSPEC,
277 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1)
280 * enum nft_set_attributes - nf_tables set netlink attributes
282 * @NFTA_SET_TABLE: table name (NLA_STRING)
283 * @NFTA_SET_NAME: set name (NLA_STRING)
284 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
285 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
286 * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
287 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
288 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
289 * @NFTA_SET_POLICY: selection policy (NLA_U32)
290 * @NFTA_SET_DESC: set description (NLA_NESTED)
291 * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
292 * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
293 * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
294 * @NFTA_SET_USERDATA: user data (NLA_BINARY)
296 enum nft_set_attributes {
309 NFTA_SET_GC_INTERVAL,
313 #define NFTA_SET_MAX (__NFTA_SET_MAX - 1)
316 * enum nft_set_elem_flags - nf_tables set element flags
318 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
320 enum nft_set_elem_flags {
321 NFT_SET_ELEM_INTERVAL_END = 0x1,
325 * enum nft_set_elem_attributes - nf_tables set element netlink attributes
327 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
328 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
329 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
330 * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
331 * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
332 * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
333 * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
335 enum nft_set_elem_attributes {
336 NFTA_SET_ELEM_UNSPEC,
340 NFTA_SET_ELEM_TIMEOUT,
341 NFTA_SET_ELEM_EXPIRATION,
342 NFTA_SET_ELEM_USERDATA,
346 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1)
349 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
351 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
352 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
353 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
354 * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
356 enum nft_set_elem_list_attributes {
357 NFTA_SET_ELEM_LIST_UNSPEC,
358 NFTA_SET_ELEM_LIST_TABLE,
359 NFTA_SET_ELEM_LIST_SET,
360 NFTA_SET_ELEM_LIST_ELEMENTS,
361 NFTA_SET_ELEM_LIST_SET_ID,
362 __NFTA_SET_ELEM_LIST_MAX
364 #define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1)
367 * enum nft_data_types - nf_tables data types
369 * @NFT_DATA_VALUE: generic data
370 * @NFT_DATA_VERDICT: netfilter verdict
372 * The type of data is usually determined by the kernel directly and is not
373 * explicitly specified by userspace. The only difference are sets, where
374 * userspace specifies the key and mapping data types.
376 * The values 0xffffff00-0xffffffff are reserved for internally used types.
377 * The remaining range can be freely used by userspace to encode types, all
378 * values are equivalent to NFT_DATA_VALUE.
380 enum nft_data_types {
382 NFT_DATA_VERDICT = 0xffffff00U,
385 #define NFT_DATA_RESERVED_MASK 0xffffff00U
388 * enum nft_data_attributes - nf_tables data netlink attributes
390 * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
391 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
393 enum nft_data_attributes {
399 #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1)
401 /* Maximum length of a value */
402 #define NFT_DATA_VALUE_MAXLEN 64
405 * enum nft_verdict_attributes - nf_tables verdict netlink attributes
407 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
408 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
410 enum nft_verdict_attributes {
416 #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1)
419 * enum nft_expr_attributes - nf_tables expression netlink attributes
421 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
422 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
424 enum nft_expr_attributes {
430 #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1)
433 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
435 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
436 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
438 enum nft_immediate_attributes {
439 NFTA_IMMEDIATE_UNSPEC,
444 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1)
447 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
449 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
450 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
451 * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
452 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
453 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
455 * The bitwise expression performs the following operation:
457 * dreg = (sreg & mask) ^ xor
459 * which allow to express all bitwise operations:
467 enum nft_bitwise_attributes {
476 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1)
479 * enum nft_byteorder_ops - nf_tables byteorder operators
481 * @NFT_BYTEORDER_NTOH: network to host operator
482 * @NFT_BYTEORDER_HTON: host to network opertaor
484 enum nft_byteorder_ops {
490 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
492 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
493 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
494 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
495 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
496 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
498 enum nft_byteorder_attributes {
499 NFTA_BYTEORDER_UNSPEC,
507 #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1)
510 * enum nft_cmp_ops - nf_tables relational operator
513 * @NFT_CMP_NEQ: not equal
514 * @NFT_CMP_LT: less than
515 * @NFT_CMP_LTE: less than or equal to
516 * @NFT_CMP_GT: greater than
517 * @NFT_CMP_GTE: greater than or equal to
529 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
531 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
532 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
533 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
535 enum nft_cmp_attributes {
542 #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1)
545 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
547 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
548 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
549 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
550 * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
552 enum nft_lookup_attributes {
560 #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1)
562 enum nft_dynset_ops {
564 NFT_DYNSET_OP_UPDATE,
568 * enum nft_dynset_attributes - dynset expression attributes
570 * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
571 * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
572 * @NFTA_DYNSET_OP: operation (NLA_U32)
573 * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
574 * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
575 * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
576 * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
578 enum nft_dynset_attributes {
580 NFTA_DYNSET_SET_NAME,
583 NFTA_DYNSET_SREG_KEY,
584 NFTA_DYNSET_SREG_DATA,
589 #define NFTA_DYNSET_MAX (__NFTA_DYNSET_MAX - 1)
592 * enum nft_payload_bases - nf_tables payload expression offset bases
594 * @NFT_PAYLOAD_LL_HEADER: link layer header
595 * @NFT_PAYLOAD_NETWORK_HEADER: network header
596 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
598 enum nft_payload_bases {
599 NFT_PAYLOAD_LL_HEADER,
600 NFT_PAYLOAD_NETWORK_HEADER,
601 NFT_PAYLOAD_TRANSPORT_HEADER,
605 * enum nft_payload_csum_types - nf_tables payload expression checksum types
607 * @NFT_PAYLOAD_CSUM_NONE: no checksumming
608 * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
610 enum nft_payload_csum_types {
611 NFT_PAYLOAD_CSUM_NONE,
612 NFT_PAYLOAD_CSUM_INET,
616 * enum nft_payload_attributes - nf_tables payload expression netlink attributes
618 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
619 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
620 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
621 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
622 * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
623 * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
624 * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
626 enum nft_payload_attributes {
633 NFTA_PAYLOAD_CSUM_TYPE,
634 NFTA_PAYLOAD_CSUM_OFFSET,
637 #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1)
640 * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
642 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
643 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
644 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
645 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
647 enum nft_exthdr_attributes {
655 #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1)
658 * enum nft_meta_keys - nf_tables meta expression keys
660 * @NFT_META_LEN: packet length (skb->len)
661 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
662 * @NFT_META_PRIORITY: packet priority (skb->priority)
663 * @NFT_META_MARK: packet mark (skb->mark)
664 * @NFT_META_IIF: packet input interface index (dev->ifindex)
665 * @NFT_META_OIF: packet output interface index (dev->ifindex)
666 * @NFT_META_IIFNAME: packet input interface name (dev->name)
667 * @NFT_META_OIFNAME: packet output interface name (dev->name)
668 * @NFT_META_IIFTYPE: packet input interface type (dev->type)
669 * @NFT_META_OIFTYPE: packet output interface type (dev->type)
670 * @NFT_META_SKUID: originating socket UID (fsuid)
671 * @NFT_META_SKGID: originating socket GID (fsgid)
672 * @NFT_META_NFTRACE: packet nftrace bit
673 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
674 * @NFT_META_SECMARK: packet secmark (skb->secmark)
675 * @NFT_META_NFPROTO: netfilter protocol
676 * @NFT_META_L4PROTO: layer 4 protocol number
677 * @NFT_META_BRI_IIFNAME: packet input bridge interface name
678 * @NFT_META_BRI_OIFNAME: packet output bridge interface name
679 * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
680 * @NFT_META_CPU: cpu id through smp_processor_id()
681 * @NFT_META_IIFGROUP: packet input interface group
682 * @NFT_META_OIFGROUP: packet output interface group
683 * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
684 * @NFT_META_PRANDOM: a 32bit pseudo-random number
704 NFT_META_BRI_IIFNAME,
705 NFT_META_BRI_OIFNAME,
715 * enum nft_meta_attributes - nf_tables meta expression netlink attributes
717 * @NFTA_META_DREG: destination register (NLA_U32)
718 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
719 * @NFTA_META_SREG: source register (NLA_U32)
721 enum nft_meta_attributes {
728 #define NFTA_META_MAX (__NFTA_META_MAX - 1)
731 * enum nft_ct_keys - nf_tables ct expression keys
733 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
734 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
735 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
736 * @NFT_CT_MARK: conntrack mark value
737 * @NFT_CT_SECMARK: conntrack secmark value
738 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
739 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
740 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
741 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
742 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
743 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
744 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
745 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
767 * enum nft_ct_attributes - nf_tables ct expression netlink attributes
769 * @NFTA_CT_DREG: destination register (NLA_U32)
770 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
771 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
772 * @NFTA_CT_SREG: source register (NLA_U32)
774 enum nft_ct_attributes {
782 #define NFTA_CT_MAX (__NFTA_CT_MAX - 1)
784 enum nft_limit_type {
789 enum nft_limit_flags {
790 NFT_LIMIT_F_INV = (1 << 0),
794 * enum nft_limit_attributes - nf_tables limit expression netlink attributes
796 * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
797 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
798 * @NFTA_LIMIT_BURST: burst (NLA_U32)
799 * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
800 * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
802 enum nft_limit_attributes {
811 #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1)
814 * enum nft_counter_attributes - nf_tables counter expression netlink attributes
816 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
817 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
819 enum nft_counter_attributes {
822 NFTA_COUNTER_PACKETS,
825 #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1)
828 * enum nft_log_attributes - nf_tables log expression netlink attributes
830 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
831 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
832 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
833 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
834 * @NFTA_LOG_LEVEL: log level (NLA_U32)
835 * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
837 enum nft_log_attributes {
847 #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1)
850 * enum nft_queue_attributes - nf_tables queue expression netlink attributes
852 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
853 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
854 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
856 enum nft_queue_attributes {
863 #define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1)
865 #define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */
866 #define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */
867 #define NFT_QUEUE_FLAG_MASK 0x03
870 * enum nft_reject_types - nf_tables reject expression reject types
872 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
873 * @NFT_REJECT_TCP_RST: reject using TCP RST
874 * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
876 enum nft_reject_types {
877 NFT_REJECT_ICMP_UNREACH,
879 NFT_REJECT_ICMPX_UNREACH,
883 * enum nft_reject_code - Generic reject codes for IPv4/IPv6
885 * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
886 * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
887 * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
888 * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
890 * These codes are mapped to real ICMP and ICMPv6 codes.
892 enum nft_reject_inet_code {
893 NFT_REJECT_ICMPX_NO_ROUTE = 0,
894 NFT_REJECT_ICMPX_PORT_UNREACH,
895 NFT_REJECT_ICMPX_HOST_UNREACH,
896 NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
897 __NFT_REJECT_ICMPX_MAX
899 #define NFT_REJECT_ICMPX_MAX (__NFT_REJECT_ICMPX_MAX - 1)
902 * enum nft_reject_attributes - nf_tables reject expression netlink attributes
904 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
905 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
907 enum nft_reject_attributes {
910 NFTA_REJECT_ICMP_CODE,
913 #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1)
916 * enum nft_nat_types - nf_tables nat expression NAT types
918 * @NFT_NAT_SNAT: source NAT
919 * @NFT_NAT_DNAT: destination NAT
927 * enum nft_nat_attributes - nf_tables nat expression netlink attributes
929 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
930 * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
931 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
932 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
933 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
934 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
935 * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
937 enum nft_nat_attributes {
941 NFTA_NAT_REG_ADDR_MIN,
942 NFTA_NAT_REG_ADDR_MAX,
943 NFTA_NAT_REG_PROTO_MIN,
944 NFTA_NAT_REG_PROTO_MAX,
948 #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1)
951 * enum nft_masq_attributes - nf_tables masquerade expression attributes
953 * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
954 * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
955 * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
957 enum nft_masq_attributes {
960 NFTA_MASQ_REG_PROTO_MIN,
961 NFTA_MASQ_REG_PROTO_MAX,
964 #define NFTA_MASQ_MAX (__NFTA_MASQ_MAX - 1)
967 * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
969 * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
970 * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
971 * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
973 enum nft_redir_attributes {
975 NFTA_REDIR_REG_PROTO_MIN,
976 NFTA_REDIR_REG_PROTO_MAX,
980 #define NFTA_REDIR_MAX (__NFTA_REDIR_MAX - 1)
983 * enum nft_dup_attributes - nf_tables dup expression netlink attributes
985 * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
986 * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
988 enum nft_dup_attributes {
994 #define NFTA_DUP_MAX (__NFTA_DUP_MAX - 1)
997 * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
999 * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1001 enum nft_fwd_attributes {
1006 #define NFTA_FWD_MAX (__NFTA_FWD_MAX - 1)
1009 * enum nft_gen_attributes - nf_tables ruleset generation attributes
1011 * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1013 enum nft_gen_attributes {
1018 #define NFTA_GEN_MAX (__NFTA_GEN_MAX - 1)
1021 * enum nft_trace_attributes - nf_tables trace netlink attributes
1023 * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1024 * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1025 * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1026 * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1027 * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1028 * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1029 * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1030 * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1031 * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1032 * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1033 * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1034 * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1035 * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1036 * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1037 * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1038 * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1040 enum nft_trace_attibutes {
1044 NFTA_TRACE_RULE_HANDLE,
1048 NFTA_TRACE_LL_HEADER,
1049 NFTA_TRACE_NETWORK_HEADER,
1050 NFTA_TRACE_TRANSPORT_HEADER,
1060 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1062 enum nft_trace_types {
1063 NFT_TRACETYPE_UNSPEC,
1064 NFT_TRACETYPE_POLICY,
1065 NFT_TRACETYPE_RETURN,
1069 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1070 #endif /* _LINUX_NF_TABLES_H */