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)
93 enum nf_tables_msg_types
{
119 * enum nft_list_attributes - nf_tables generic list netlink attributes
121 * @NFTA_LIST_ELEM: list element (NLA_NESTED)
123 enum nft_list_attributes
{
128 #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1)
131 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
133 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
134 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
135 * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
137 enum nft_hook_attributes
{
144 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
147 * enum nft_table_flags - nf_tables table flags
149 * @NFT_TABLE_F_DORMANT: this table is not active
151 enum nft_table_flags
{
152 NFT_TABLE_F_DORMANT
= 0x1,
156 * enum nft_table_attributes - nf_tables table netlink attributes
158 * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
159 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
160 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
162 enum nft_table_attributes
{
169 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)
172 * enum nft_chain_attributes - nf_tables chain netlink attributes
174 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
175 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
176 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
177 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
178 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
179 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
180 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
181 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
183 enum nft_chain_attributes
{
196 #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1)
199 * enum nft_rule_attributes - nf_tables rule netlink attributes
201 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
202 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
203 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
204 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
205 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
206 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
207 * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
209 enum nft_rule_attributes
{
214 NFTA_RULE_EXPRESSIONS
,
221 #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1)
224 * enum nft_rule_compat_flags - nf_tables rule compat flags
226 * @NFT_RULE_COMPAT_F_INV: invert the check result
228 enum nft_rule_compat_flags
{
229 NFT_RULE_COMPAT_F_INV
= (1 << 1),
230 NFT_RULE_COMPAT_F_MASK
= NFT_RULE_COMPAT_F_INV
,
234 * enum nft_rule_compat_attributes - nf_tables rule compat attributes
236 * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
237 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
239 enum nft_rule_compat_attributes
{
240 NFTA_RULE_COMPAT_UNSPEC
,
241 NFTA_RULE_COMPAT_PROTO
,
242 NFTA_RULE_COMPAT_FLAGS
,
243 __NFTA_RULE_COMPAT_MAX
245 #define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1)
248 * enum nft_set_flags - nf_tables set flags
250 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
251 * @NFT_SET_CONSTANT: set contents may not change while bound
252 * @NFT_SET_INTERVAL: set contains intervals
253 * @NFT_SET_MAP: set is used as a dictionary
254 * @NFT_SET_TIMEOUT: set uses timeouts
255 * @NFT_SET_EVAL: set contains expressions for evaluation
258 NFT_SET_ANONYMOUS
= 0x1,
259 NFT_SET_CONSTANT
= 0x2,
260 NFT_SET_INTERVAL
= 0x4,
262 NFT_SET_TIMEOUT
= 0x10,
267 * enum nft_set_policies - set selection policy
269 * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
270 * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
272 enum nft_set_policies
{
273 NFT_SET_POL_PERFORMANCE
,
278 * enum nft_set_desc_attributes - set element description
280 * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
282 enum nft_set_desc_attributes
{
283 NFTA_SET_DESC_UNSPEC
,
287 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1)
290 * enum nft_set_attributes - nf_tables set netlink attributes
292 * @NFTA_SET_TABLE: table name (NLA_STRING)
293 * @NFTA_SET_NAME: set name (NLA_STRING)
294 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
295 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
296 * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
297 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
298 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
299 * @NFTA_SET_POLICY: selection policy (NLA_U32)
300 * @NFTA_SET_DESC: set description (NLA_NESTED)
301 * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
302 * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
303 * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
304 * @NFTA_SET_USERDATA: user data (NLA_BINARY)
306 enum nft_set_attributes
{
319 NFTA_SET_GC_INTERVAL
,
324 #define NFTA_SET_MAX (__NFTA_SET_MAX - 1)
327 * enum nft_set_elem_flags - nf_tables set element flags
329 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
331 enum nft_set_elem_flags
{
332 NFT_SET_ELEM_INTERVAL_END
= 0x1,
336 * enum nft_set_elem_attributes - nf_tables set element netlink attributes
338 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
339 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
340 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
341 * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
342 * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
343 * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
344 * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
346 enum nft_set_elem_attributes
{
347 NFTA_SET_ELEM_UNSPEC
,
351 NFTA_SET_ELEM_TIMEOUT
,
352 NFTA_SET_ELEM_EXPIRATION
,
353 NFTA_SET_ELEM_USERDATA
,
358 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1)
361 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
363 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
364 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
365 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
366 * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
368 enum nft_set_elem_list_attributes
{
369 NFTA_SET_ELEM_LIST_UNSPEC
,
370 NFTA_SET_ELEM_LIST_TABLE
,
371 NFTA_SET_ELEM_LIST_SET
,
372 NFTA_SET_ELEM_LIST_ELEMENTS
,
373 NFTA_SET_ELEM_LIST_SET_ID
,
374 __NFTA_SET_ELEM_LIST_MAX
376 #define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1)
379 * enum nft_data_types - nf_tables data types
381 * @NFT_DATA_VALUE: generic data
382 * @NFT_DATA_VERDICT: netfilter verdict
384 * The type of data is usually determined by the kernel directly and is not
385 * explicitly specified by userspace. The only difference are sets, where
386 * userspace specifies the key and mapping data types.
388 * The values 0xffffff00-0xffffffff are reserved for internally used types.
389 * The remaining range can be freely used by userspace to encode types, all
390 * values are equivalent to NFT_DATA_VALUE.
392 enum nft_data_types
{
394 NFT_DATA_VERDICT
= 0xffffff00U
,
397 #define NFT_DATA_RESERVED_MASK 0xffffff00U
400 * enum nft_data_attributes - nf_tables data netlink attributes
402 * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
403 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
405 enum nft_data_attributes
{
411 #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1)
413 /* Maximum length of a value */
414 #define NFT_DATA_VALUE_MAXLEN 64
417 * enum nft_verdict_attributes - nf_tables verdict netlink attributes
419 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
420 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
422 enum nft_verdict_attributes
{
428 #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1)
431 * enum nft_expr_attributes - nf_tables expression netlink attributes
433 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
434 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
436 enum nft_expr_attributes
{
442 #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1)
445 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
447 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
448 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
450 enum nft_immediate_attributes
{
451 NFTA_IMMEDIATE_UNSPEC
,
456 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1)
459 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
461 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
462 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
463 * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
464 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
465 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
467 * The bitwise expression performs the following operation:
469 * dreg = (sreg & mask) ^ xor
471 * which allow to express all bitwise operations:
479 enum nft_bitwise_attributes
{
488 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1)
491 * enum nft_byteorder_ops - nf_tables byteorder operators
493 * @NFT_BYTEORDER_NTOH: network to host operator
494 * @NFT_BYTEORDER_HTON: host to network opertaor
496 enum nft_byteorder_ops
{
502 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
504 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
505 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
506 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
507 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
508 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
510 enum nft_byteorder_attributes
{
511 NFTA_BYTEORDER_UNSPEC
,
519 #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1)
522 * enum nft_cmp_ops - nf_tables relational operator
525 * @NFT_CMP_NEQ: not equal
526 * @NFT_CMP_LT: less than
527 * @NFT_CMP_LTE: less than or equal to
528 * @NFT_CMP_GT: greater than
529 * @NFT_CMP_GTE: greater than or equal to
541 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
543 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
544 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
545 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
547 enum nft_cmp_attributes
{
554 #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1)
557 * enum nft_range_ops - nf_tables range operator
559 * @NFT_RANGE_EQ: equal
560 * @NFT_RANGE_NEQ: not equal
568 * enum nft_range_attributes - nf_tables range expression netlink attributes
570 * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
571 * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
572 * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
573 * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
575 enum nft_range_attributes
{
579 NFTA_RANGE_FROM_DATA
,
583 #define NFTA_RANGE_MAX (__NFTA_RANGE_MAX - 1)
585 enum nft_lookup_flags
{
586 NFT_LOOKUP_F_INV
= (1 << 0),
590 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
592 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
593 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
594 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
595 * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
596 * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
598 enum nft_lookup_attributes
{
607 #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1)
609 enum nft_dynset_ops
{
611 NFT_DYNSET_OP_UPDATE
,
614 enum nft_dynset_flags
{
615 NFT_DYNSET_F_INV
= (1 << 0),
619 * enum nft_dynset_attributes - dynset expression attributes
621 * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
622 * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
623 * @NFTA_DYNSET_OP: operation (NLA_U32)
624 * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
625 * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
626 * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
627 * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
628 * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
630 enum nft_dynset_attributes
{
632 NFTA_DYNSET_SET_NAME
,
635 NFTA_DYNSET_SREG_KEY
,
636 NFTA_DYNSET_SREG_DATA
,
643 #define NFTA_DYNSET_MAX (__NFTA_DYNSET_MAX - 1)
646 * enum nft_payload_bases - nf_tables payload expression offset bases
648 * @NFT_PAYLOAD_LL_HEADER: link layer header
649 * @NFT_PAYLOAD_NETWORK_HEADER: network header
650 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
652 enum nft_payload_bases
{
653 NFT_PAYLOAD_LL_HEADER
,
654 NFT_PAYLOAD_NETWORK_HEADER
,
655 NFT_PAYLOAD_TRANSPORT_HEADER
,
659 * enum nft_payload_csum_types - nf_tables payload expression checksum types
661 * @NFT_PAYLOAD_CSUM_NONE: no checksumming
662 * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
664 enum nft_payload_csum_types
{
665 NFT_PAYLOAD_CSUM_NONE
,
666 NFT_PAYLOAD_CSUM_INET
,
669 enum nft_payload_csum_flags
{
670 NFT_PAYLOAD_L4CSUM_PSEUDOHDR
= (1 << 0),
674 * enum nft_payload_attributes - nf_tables payload expression netlink attributes
676 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
677 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
678 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
679 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
680 * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
681 * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
682 * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
683 * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
685 enum nft_payload_attributes
{
692 NFTA_PAYLOAD_CSUM_TYPE
,
693 NFTA_PAYLOAD_CSUM_OFFSET
,
694 NFTA_PAYLOAD_CSUM_FLAGS
,
697 #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1)
700 * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
702 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
703 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
704 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
705 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
707 enum nft_exthdr_attributes
{
715 #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1)
718 * enum nft_meta_keys - nf_tables meta expression keys
720 * @NFT_META_LEN: packet length (skb->len)
721 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
722 * @NFT_META_PRIORITY: packet priority (skb->priority)
723 * @NFT_META_MARK: packet mark (skb->mark)
724 * @NFT_META_IIF: packet input interface index (dev->ifindex)
725 * @NFT_META_OIF: packet output interface index (dev->ifindex)
726 * @NFT_META_IIFNAME: packet input interface name (dev->name)
727 * @NFT_META_OIFNAME: packet output interface name (dev->name)
728 * @NFT_META_IIFTYPE: packet input interface type (dev->type)
729 * @NFT_META_OIFTYPE: packet output interface type (dev->type)
730 * @NFT_META_SKUID: originating socket UID (fsuid)
731 * @NFT_META_SKGID: originating socket GID (fsgid)
732 * @NFT_META_NFTRACE: packet nftrace bit
733 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
734 * @NFT_META_SECMARK: packet secmark (skb->secmark)
735 * @NFT_META_NFPROTO: netfilter protocol
736 * @NFT_META_L4PROTO: layer 4 protocol number
737 * @NFT_META_BRI_IIFNAME: packet input bridge interface name
738 * @NFT_META_BRI_OIFNAME: packet output bridge interface name
739 * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
740 * @NFT_META_CPU: cpu id through smp_processor_id()
741 * @NFT_META_IIFGROUP: packet input interface group
742 * @NFT_META_OIFGROUP: packet output interface group
743 * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
744 * @NFT_META_PRANDOM: a 32bit pseudo-random number
764 NFT_META_BRI_IIFNAME
,
765 NFT_META_BRI_OIFNAME
,
775 * enum nft_rt_keys - nf_tables routing expression keys
777 * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
778 * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
779 * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
788 * enum nft_hash_attributes - nf_tables hash expression netlink attributes
790 * @NFTA_HASH_SREG: source register (NLA_U32)
791 * @NFTA_HASH_DREG: destination register (NLA_U32)
792 * @NFTA_HASH_LEN: source data length (NLA_U32)
793 * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
794 * @NFTA_HASH_SEED: seed value (NLA_U32)
795 * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
797 enum nft_hash_attributes
{
807 #define NFTA_HASH_MAX (__NFTA_HASH_MAX - 1)
810 * enum nft_meta_attributes - nf_tables meta expression netlink attributes
812 * @NFTA_META_DREG: destination register (NLA_U32)
813 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
814 * @NFTA_META_SREG: source register (NLA_U32)
816 enum nft_meta_attributes
{
823 #define NFTA_META_MAX (__NFTA_META_MAX - 1)
826 * enum nft_rt_attributes - nf_tables routing expression netlink attributes
828 * @NFTA_RT_DREG: destination register (NLA_U32)
829 * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
831 enum nft_rt_attributes
{
837 #define NFTA_RT_MAX (__NFTA_RT_MAX - 1)
840 * enum nft_ct_keys - nf_tables ct expression keys
842 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
843 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
844 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
845 * @NFT_CT_MARK: conntrack mark value
846 * @NFT_CT_SECMARK: conntrack secmark value
847 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
848 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
849 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
850 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
851 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
852 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
853 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
854 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
876 * enum nft_ct_attributes - nf_tables ct expression netlink attributes
878 * @NFTA_CT_DREG: destination register (NLA_U32)
879 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
880 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
881 * @NFTA_CT_SREG: source register (NLA_U32)
883 enum nft_ct_attributes
{
891 #define NFTA_CT_MAX (__NFTA_CT_MAX - 1)
893 enum nft_limit_type
{
898 enum nft_limit_flags
{
899 NFT_LIMIT_F_INV
= (1 << 0),
903 * enum nft_limit_attributes - nf_tables limit expression netlink attributes
905 * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
906 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
907 * @NFTA_LIMIT_BURST: burst (NLA_U32)
908 * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
909 * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
911 enum nft_limit_attributes
{
921 #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1)
924 * enum nft_counter_attributes - nf_tables counter expression netlink attributes
926 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
927 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
929 enum nft_counter_attributes
{
932 NFTA_COUNTER_PACKETS
,
936 #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1)
939 * enum nft_log_attributes - nf_tables log expression netlink attributes
941 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
942 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
943 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
944 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
945 * @NFTA_LOG_LEVEL: log level (NLA_U32)
946 * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
948 enum nft_log_attributes
{
958 #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1)
961 * enum nft_queue_attributes - nf_tables queue expression netlink attributes
963 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
964 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
965 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
966 * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
968 enum nft_queue_attributes
{
973 NFTA_QUEUE_SREG_QNUM
,
976 #define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1)
978 #define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */
979 #define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */
980 #define NFT_QUEUE_FLAG_MASK 0x03
982 enum nft_quota_flags
{
983 NFT_QUOTA_F_INV
= (1 << 0),
987 * enum nft_quota_attributes - nf_tables quota expression netlink attributes
989 * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
990 * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
992 enum nft_quota_attributes
{
999 #define NFTA_QUOTA_MAX (__NFTA_QUOTA_MAX - 1)
1002 * enum nft_reject_types - nf_tables reject expression reject types
1004 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
1005 * @NFT_REJECT_TCP_RST: reject using TCP RST
1006 * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
1008 enum nft_reject_types
{
1009 NFT_REJECT_ICMP_UNREACH
,
1011 NFT_REJECT_ICMPX_UNREACH
,
1015 * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1017 * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1018 * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1019 * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1020 * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1022 * These codes are mapped to real ICMP and ICMPv6 codes.
1024 enum nft_reject_inet_code
{
1025 NFT_REJECT_ICMPX_NO_ROUTE
= 0,
1026 NFT_REJECT_ICMPX_PORT_UNREACH
,
1027 NFT_REJECT_ICMPX_HOST_UNREACH
,
1028 NFT_REJECT_ICMPX_ADMIN_PROHIBITED
,
1029 __NFT_REJECT_ICMPX_MAX
1031 #define NFT_REJECT_ICMPX_MAX (__NFT_REJECT_ICMPX_MAX - 1)
1034 * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1036 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1037 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1039 enum nft_reject_attributes
{
1042 NFTA_REJECT_ICMP_CODE
,
1045 #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1)
1048 * enum nft_nat_types - nf_tables nat expression NAT types
1050 * @NFT_NAT_SNAT: source NAT
1051 * @NFT_NAT_DNAT: destination NAT
1053 enum nft_nat_types
{
1059 * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1061 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1062 * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1063 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1064 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1065 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1066 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1067 * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1069 enum nft_nat_attributes
{
1073 NFTA_NAT_REG_ADDR_MIN
,
1074 NFTA_NAT_REG_ADDR_MAX
,
1075 NFTA_NAT_REG_PROTO_MIN
,
1076 NFTA_NAT_REG_PROTO_MAX
,
1080 #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1)
1083 * enum nft_masq_attributes - nf_tables masquerade expression attributes
1085 * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1086 * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1087 * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1089 enum nft_masq_attributes
{
1092 NFTA_MASQ_REG_PROTO_MIN
,
1093 NFTA_MASQ_REG_PROTO_MAX
,
1096 #define NFTA_MASQ_MAX (__NFTA_MASQ_MAX - 1)
1099 * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1101 * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1102 * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1103 * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1105 enum nft_redir_attributes
{
1107 NFTA_REDIR_REG_PROTO_MIN
,
1108 NFTA_REDIR_REG_PROTO_MAX
,
1112 #define NFTA_REDIR_MAX (__NFTA_REDIR_MAX - 1)
1115 * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1117 * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1118 * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1120 enum nft_dup_attributes
{
1126 #define NFTA_DUP_MAX (__NFTA_DUP_MAX - 1)
1129 * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1131 * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1133 enum nft_fwd_attributes
{
1138 #define NFTA_FWD_MAX (__NFTA_FWD_MAX - 1)
1141 * enum nft_gen_attributes - nf_tables ruleset generation attributes
1143 * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1145 enum nft_gen_attributes
{
1150 #define NFTA_GEN_MAX (__NFTA_GEN_MAX - 1)
1153 * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1155 * @NFTA_FIB_DREG: destination register (NLA_U32)
1156 * @NFTA_FIB_RESULT: desired result (NLA_U32)
1157 * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1159 * The FIB expression performs a route lookup according
1160 * to the packet data.
1162 enum nft_fib_attributes
{
1169 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1171 enum nft_fib_result
{
1172 NFT_FIB_RESULT_UNSPEC
,
1174 NFT_FIB_RESULT_OIFNAME
,
1175 NFT_FIB_RESULT_ADDRTYPE
,
1176 __NFT_FIB_RESULT_MAX
1178 #define NFT_FIB_RESULT_MAX (__NFT_FIB_RESULT_MAX - 1)
1180 enum nft_fib_flags
{
1181 NFTA_FIB_F_SADDR
= 1 << 0, /* look up src */
1182 NFTA_FIB_F_DADDR
= 1 << 1, /* look up dst */
1183 NFTA_FIB_F_MARK
= 1 << 2, /* use skb->mark */
1184 NFTA_FIB_F_IIF
= 1 << 3, /* restrict to iif */
1185 NFTA_FIB_F_OIF
= 1 << 4, /* restrict to oif */
1188 #define NFT_OBJECT_UNSPEC 0
1189 #define NFT_OBJECT_COUNTER 1
1192 * enum nft_object_attributes - nf_tables stateful object netlink attributes
1194 * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
1195 * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
1196 * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
1197 * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
1198 * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
1200 enum nft_object_attributes
{
1209 #define NFTA_OBJ_MAX (__NFTA_OBJ_MAX - 1)
1212 * enum nft_trace_attributes - nf_tables trace netlink attributes
1214 * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1215 * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1216 * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1217 * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1218 * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1219 * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1220 * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1221 * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1222 * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1223 * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1224 * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1225 * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1226 * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1227 * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1228 * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1229 * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1231 enum nft_trace_attributes
{
1235 NFTA_TRACE_RULE_HANDLE
,
1239 NFTA_TRACE_LL_HEADER
,
1240 NFTA_TRACE_NETWORK_HEADER
,
1241 NFTA_TRACE_TRANSPORT_HEADER
,
1252 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1254 enum nft_trace_types
{
1255 NFT_TRACETYPE_UNSPEC
,
1256 NFT_TRACETYPE_POLICY
,
1257 NFT_TRACETYPE_RETURN
,
1261 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1264 * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1266 * @NFTA_NG_DREG: destination register (NLA_U32)
1267 * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1268 * @NFTA_NG_TYPE: operation type (NLA_U32)
1269 * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1271 enum nft_ng_attributes
{
1279 #define NFTA_NG_MAX (__NFTA_NG_MAX - 1)
1286 #define NFT_NG_MAX (__NFT_NG_MAX - 1)
1288 #endif /* _LINUX_NF_TABLES_H */