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netfilter: nft_meta: add l4proto support
[deliverable/linux.git] / include / uapi / linux / netfilter / nf_tables.h
CommitLineData
96518518
PM		 1#ifndef _LINUX_NF_TABLES_H
2#define _LINUX_NF_TABLES_H
3
4#define NFT_CHAIN_MAXNAMELEN 32
5
6enum nft_registers {
7 NFT_REG_VERDICT,
8 NFT_REG_1,
9 NFT_REG_2,
10 NFT_REG_3,
11 NFT_REG_4,
12 __NFT_REG_MAX
13};
14#define NFT_REG_MAX (__NFT_REG_MAX - 1)
15
16/**
17 * enum nft_verdicts - nf_tables internal verdicts
18 *
19 * @NFT_CONTINUE: continue evaluation of the current rule
20 * @NFT_BREAK: terminate evaluation of the current rule
21 * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
22 * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
23 * @NFT_RETURN: return to the topmost chain on the jump stack
24 *
25 * The nf_tables verdicts share their numeric space with the netfilter verdicts.
26 */
27enum nft_verdicts {
28 NFT_CONTINUE = -1,
29 NFT_BREAK = -2,
30 NFT_JUMP = -3,
31 NFT_GOTO = -4,
32 NFT_RETURN = -5,
33};
34
35/**
36 * enum nf_tables_msg_types - nf_tables netlink message types
37 *
38 * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
39 * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
40 * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
41 * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
42 * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
43 * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
44 * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
45 * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
46 * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
20a69341
PM		 47 * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
48 * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
49 * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
50 * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
51 * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
52 * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
96518518
PM		 53 */
54enum nf_tables_msg_types {
55 NFT_MSG_NEWTABLE,
56 NFT_MSG_GETTABLE,
57 NFT_MSG_DELTABLE,
58 NFT_MSG_NEWCHAIN,
59 NFT_MSG_GETCHAIN,
60 NFT_MSG_DELCHAIN,
61 NFT_MSG_NEWRULE,
62 NFT_MSG_GETRULE,
63 NFT_MSG_DELRULE,
20a69341
PM		 64 NFT_MSG_NEWSET,
65 NFT_MSG_GETSET,
66 NFT_MSG_DELSET,
67 NFT_MSG_NEWSETELEM,
68 NFT_MSG_GETSETELEM,
69 NFT_MSG_DELSETELEM,
96518518
PM		 70 NFT_MSG_MAX,
71};
72
20a69341
PM		 73/**
74 * enum nft_list_attributes - nf_tables generic list netlink attributes
75 *
76 * @NFTA_LIST_ELEM: list element (NLA_NESTED)
77 */
96518518
PM		 78enum nft_list_attributes {
79 NFTA_LIST_UNPEC,
80 NFTA_LIST_ELEM,
81 __NFTA_LIST_MAX
82};
83#define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1)
84
85/**
86 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
87 *
88 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
89 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
90 */
91enum nft_hook_attributes {
92 NFTA_HOOK_UNSPEC,
93 NFTA_HOOK_HOOKNUM,
94 NFTA_HOOK_PRIORITY,
95 __NFTA_HOOK_MAX
96};
97#define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
98
9ddf6323
PNA		 99/**
100 * enum nft_table_flags - nf_tables table flags
101 *
102 * @NFT_TABLE_F_DORMANT: this table is not active
103 */
104enum nft_table_flags {
105 NFT_TABLE_F_DORMANT = 0x1,
106};
107
96518518
PM		 108/**
109 * enum nft_table_attributes - nf_tables table netlink attributes
110 *
111 * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
9ddf6323 112 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
d8bcc768 113 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
96518518
PM		 114 */
115enum nft_table_attributes {
116 NFTA_TABLE_UNSPEC,
117 NFTA_TABLE_NAME,
9ddf6323 118 NFTA_TABLE_FLAGS,
d8bcc768 119 NFTA_TABLE_USE,
96518518
PM		 120 __NFTA_TABLE_MAX
121};
122#define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)
123
124/**
125 * enum nft_chain_attributes - nf_tables chain netlink attributes
126 *
127 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
128 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
129 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
130 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
0ca743a5
PNA		 131 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
132 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
9370761c 133 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
0ca743a5 134 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
96518518
PM		 135 */
136enum nft_chain_attributes {
137 NFTA_CHAIN_UNSPEC,
138 NFTA_CHAIN_TABLE,
139 NFTA_CHAIN_HANDLE,
140 NFTA_CHAIN_NAME,
141 NFTA_CHAIN_HOOK,
0ca743a5
PNA		 142 NFTA_CHAIN_POLICY,
143 NFTA_CHAIN_USE,
9370761c 144 NFTA_CHAIN_TYPE,
0ca743a5 145 NFTA_CHAIN_COUNTERS,
96518518
PM		 146 __NFTA_CHAIN_MAX
147};
148#define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1)
149
150/**
151 * enum nft_rule_attributes - nf_tables rule netlink attributes
152 *
153 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
154 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
155 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
156 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
0ca743a5 157 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
5e948466 158 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
96518518
PM		 159 */
160enum nft_rule_attributes {
161 NFTA_RULE_UNSPEC,
162 NFTA_RULE_TABLE,
163 NFTA_RULE_CHAIN,
164 NFTA_RULE_HANDLE,
165 NFTA_RULE_EXPRESSIONS,
0ca743a5 166 NFTA_RULE_COMPAT,
5e948466 167 NFTA_RULE_POSITION,
96518518
PM		 168 __NFTA_RULE_MAX
169};
170#define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1)
171
0ca743a5
PNA		 172/**
173 * enum nft_rule_compat_flags - nf_tables rule compat flags
174 *
175 * @NFT_RULE_COMPAT_F_INV: invert the check result
176 */
177enum nft_rule_compat_flags {
178 NFT_RULE_COMPAT_F_INV = (1 << 1),
179 NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV,
180};
181
182/**
183 * enum nft_rule_compat_attributes - nf_tables rule compat attributes
184 *
185 * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
186 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
187 */
188enum nft_rule_compat_attributes {
189 NFTA_RULE_COMPAT_UNSPEC,
190 NFTA_RULE_COMPAT_PROTO,
191 NFTA_RULE_COMPAT_FLAGS,
192 __NFTA_RULE_COMPAT_MAX
193};
194#define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1)
195
20a69341
PM		 196/**
197 * enum nft_set_flags - nf_tables set flags
198 *
199 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
200 * @NFT_SET_CONSTANT: set contents may not change while bound
201 * @NFT_SET_INTERVAL: set contains intervals
202 * @NFT_SET_MAP: set is used as a dictionary
203 */
204enum nft_set_flags {
205 NFT_SET_ANONYMOUS = 0x1,
206 NFT_SET_CONSTANT = 0x2,
207 NFT_SET_INTERVAL = 0x4,
208 NFT_SET_MAP = 0x8,
209};
210
211/**
212 * enum nft_set_attributes - nf_tables set netlink attributes
213 *
214 * @NFTA_SET_TABLE: table name (NLA_STRING)
215 * @NFTA_SET_NAME: set name (NLA_STRING)
216 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
217 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
218 * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
219 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
220 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
221 */
222enum nft_set_attributes {
223 NFTA_SET_UNSPEC,
224 NFTA_SET_TABLE,
225 NFTA_SET_NAME,
226 NFTA_SET_FLAGS,
227 NFTA_SET_KEY_TYPE,
228 NFTA_SET_KEY_LEN,
229 NFTA_SET_DATA_TYPE,
230 NFTA_SET_DATA_LEN,
231 __NFTA_SET_MAX
232};
233#define NFTA_SET_MAX (__NFTA_SET_MAX - 1)
234
235/**
236 * enum nft_set_elem_flags - nf_tables set element flags
237 *
238 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
239 */
240enum nft_set_elem_flags {
241 NFT_SET_ELEM_INTERVAL_END = 0x1,
242};
243
244/**
245 * enum nft_set_elem_attributes - nf_tables set element netlink attributes
246 *
247 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
248 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
249 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
250 */
251enum nft_set_elem_attributes {
252 NFTA_SET_ELEM_UNSPEC,
253 NFTA_SET_ELEM_KEY,
254 NFTA_SET_ELEM_DATA,
255 NFTA_SET_ELEM_FLAGS,
256 __NFTA_SET_ELEM_MAX
257};
258#define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1)
259
260/**
261 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
262 *
263 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
264 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
265 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
266 */
267enum nft_set_elem_list_attributes {
268 NFTA_SET_ELEM_LIST_UNSPEC,
269 NFTA_SET_ELEM_LIST_TABLE,
270 NFTA_SET_ELEM_LIST_SET,
271 NFTA_SET_ELEM_LIST_ELEMENTS,
272 __NFTA_SET_ELEM_LIST_MAX
273};
274#define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1)
275
276/**
277 * enum nft_data_types - nf_tables data types
278 *
279 * @NFT_DATA_VALUE: generic data
280 * @NFT_DATA_VERDICT: netfilter verdict
281 *
282 * The type of data is usually determined by the kernel directly and is not
283 * explicitly specified by userspace. The only difference are sets, where
284 * userspace specifies the key and mapping data types.
285 *
286 * The values 0xffffff00-0xffffffff are reserved for internally used types.
287 * The remaining range can be freely used by userspace to encode types, all
288 * values are equivalent to NFT_DATA_VALUE.
289 */
290enum nft_data_types {
291 NFT_DATA_VALUE,
292 NFT_DATA_VERDICT = 0xffffff00U,
293};
294
295#define NFT_DATA_RESERVED_MASK 0xffffff00U
296
297/**
298 * enum nft_data_attributes - nf_tables data netlink attributes
299 *
300 * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
301 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
302 */
96518518
PM		 303enum nft_data_attributes {
304 NFTA_DATA_UNSPEC,
305 NFTA_DATA_VALUE,
306 NFTA_DATA_VERDICT,
307 __NFTA_DATA_MAX
308};
309#define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1)
310
311/**
312 * enum nft_verdict_attributes - nf_tables verdict netlink attributes
313 *
314 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
315 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
316 */
317enum nft_verdict_attributes {
318 NFTA_VERDICT_UNSPEC,
319 NFTA_VERDICT_CODE,
320 NFTA_VERDICT_CHAIN,
321 __NFTA_VERDICT_MAX
322};
323#define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1)
324
325/**
326 * enum nft_expr_attributes - nf_tables expression netlink attributes
327 *
328 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
329 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
330 */
331enum nft_expr_attributes {
332 NFTA_EXPR_UNSPEC,
333 NFTA_EXPR_NAME,
334 NFTA_EXPR_DATA,
335 __NFTA_EXPR_MAX
336};
337#define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1)
338
339/**
340 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
341 *
342 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
343 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
344 */
345enum nft_immediate_attributes {
346 NFTA_IMMEDIATE_UNSPEC,
347 NFTA_IMMEDIATE_DREG,
348 NFTA_IMMEDIATE_DATA,
349 __NFTA_IMMEDIATE_MAX
350};
351#define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1)
352
353/**
354 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
355 *
356 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
357 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
358 * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
359 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
360 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
361 *
362 * The bitwise expression performs the following operation:
363 *
364 * dreg = (sreg & mask) ^ xor
365 *
366 * which allow to express all bitwise operations:
367 *
368 * mask xor
369 * NOT: 1 1
370 * OR: 0 x
371 * XOR: 1 x
372 * AND: x 0
373 */
374enum nft_bitwise_attributes {
375 NFTA_BITWISE_UNSPEC,
376 NFTA_BITWISE_SREG,
377 NFTA_BITWISE_DREG,
378 NFTA_BITWISE_LEN,
379 NFTA_BITWISE_MASK,
380 NFTA_BITWISE_XOR,
381 __NFTA_BITWISE_MAX
382};
383#define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1)
384
385/**
386 * enum nft_byteorder_ops - nf_tables byteorder operators
387 *
388 * @NFT_BYTEORDER_NTOH: network to host operator
389 * @NFT_BYTEORDER_HTON: host to network opertaor
390 */
391enum nft_byteorder_ops {
392 NFT_BYTEORDER_NTOH,
393 NFT_BYTEORDER_HTON,
394};
395
396/**
397 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
398 *
399 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
400 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
401 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
402 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
403 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
404 */
405enum nft_byteorder_attributes {
406 NFTA_BYTEORDER_UNSPEC,
407 NFTA_BYTEORDER_SREG,
408 NFTA_BYTEORDER_DREG,
409 NFTA_BYTEORDER_OP,
410 NFTA_BYTEORDER_LEN,
411 NFTA_BYTEORDER_SIZE,
412 __NFTA_BYTEORDER_MAX
413};
414#define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1)
415
416/**
417 * enum nft_cmp_ops - nf_tables relational operator
418 *
419 * @NFT_CMP_EQ: equal
420 * @NFT_CMP_NEQ: not equal
421 * @NFT_CMP_LT: less than
422 * @NFT_CMP_LTE: less than or equal to
423 * @NFT_CMP_GT: greater than
424 * @NFT_CMP_GTE: greater than or equal to
425 */
426enum nft_cmp_ops {
427 NFT_CMP_EQ,
428 NFT_CMP_NEQ,
429 NFT_CMP_LT,
430 NFT_CMP_LTE,
431 NFT_CMP_GT,
432 NFT_CMP_GTE,
433};
434
435/**
436 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
437 *
438 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
439 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
440 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
441 */
442enum nft_cmp_attributes {
443 NFTA_CMP_UNSPEC,
444 NFTA_CMP_SREG,
445 NFTA_CMP_OP,
446 NFTA_CMP_DATA,
447 __NFTA_CMP_MAX
448};
449#define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1)
450
20a69341
PM		 451/**
452 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
453 *
454 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
455 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
456 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
457 */
458enum nft_lookup_attributes {
459 NFTA_LOOKUP_UNSPEC,
460 NFTA_LOOKUP_SET,
461 NFTA_LOOKUP_SREG,
462 NFTA_LOOKUP_DREG,
463 __NFTA_LOOKUP_MAX
96518518 464};
20a69341 465#define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1)
96518518
PM		 466
467/**
468 * enum nft_payload_bases - nf_tables payload expression offset bases
469 *
470 * @NFT_PAYLOAD_LL_HEADER: link layer header
471 * @NFT_PAYLOAD_NETWORK_HEADER: network header
472 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
473 */
474enum nft_payload_bases {
475 NFT_PAYLOAD_LL_HEADER,
476 NFT_PAYLOAD_NETWORK_HEADER,
477 NFT_PAYLOAD_TRANSPORT_HEADER,
478};
479
480/**
481 * enum nft_payload_attributes - nf_tables payload expression netlink attributes
482 *
483 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
484 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
485 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
486 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
487 */
488enum nft_payload_attributes {
489 NFTA_PAYLOAD_UNSPEC,
490 NFTA_PAYLOAD_DREG,
491 NFTA_PAYLOAD_BASE,
492 NFTA_PAYLOAD_OFFSET,
493 NFTA_PAYLOAD_LEN,
494 __NFTA_PAYLOAD_MAX
495};
496#define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1)
497
498/**
499 * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
500 *
501 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
502 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
503 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
504 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
505 */
506enum nft_exthdr_attributes {
507 NFTA_EXTHDR_UNSPEC,
508 NFTA_EXTHDR_DREG,
509 NFTA_EXTHDR_TYPE,
510 NFTA_EXTHDR_OFFSET,
511 NFTA_EXTHDR_LEN,
512 __NFTA_EXTHDR_MAX
513};
514#define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1)
515
516/**
517 * enum nft_meta_keys - nf_tables meta expression keys
518 *
519 * @NFT_META_LEN: packet length (skb->len)
520 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
521 * @NFT_META_PRIORITY: packet priority (skb->priority)
522 * @NFT_META_MARK: packet mark (skb->mark)
523 * @NFT_META_IIF: packet input interface index (dev->ifindex)
524 * @NFT_META_OIF: packet output interface index (dev->ifindex)
525 * @NFT_META_IIFNAME: packet input interface name (dev->name)
526 * @NFT_META_OIFNAME: packet output interface name (dev->name)
527 * @NFT_META_IIFTYPE: packet input interface type (dev->type)
528 * @NFT_META_OIFTYPE: packet output interface type (dev->type)
529 * @NFT_META_SKUID: originating socket UID (fsuid)
530 * @NFT_META_SKGID: originating socket GID (fsgid)
531 * @NFT_META_NFTRACE: packet nftrace bit
532 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
533 * @NFT_META_SECMARK: packet secmark (skb->secmark)
124edfa9 534 * @NFT_META_NFPROTO: netfilter protocol
4566bf27 535 * @NFT_META_L4PROTO: layer 4 protocol number
96518518
PM		 536 */
537enum nft_meta_keys {
538 NFT_META_LEN,
539 NFT_META_PROTOCOL,
540 NFT_META_PRIORITY,
541 NFT_META_MARK,
542 NFT_META_IIF,
543 NFT_META_OIF,
544 NFT_META_IIFNAME,
545 NFT_META_OIFNAME,
546 NFT_META_IIFTYPE,
547 NFT_META_OIFTYPE,
548 NFT_META_SKUID,
549 NFT_META_SKGID,
550 NFT_META_NFTRACE,
551 NFT_META_RTCLASSID,
552 NFT_META_SECMARK,
124edfa9 553 NFT_META_NFPROTO,
4566bf27 554 NFT_META_L4PROTO,
96518518
PM		 555};
556
557/**
558 * enum nft_meta_attributes - nf_tables meta expression netlink attributes
559 *
560 * @NFTA_META_DREG: destination register (NLA_U32)
561 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
e035b77a 562 * @NFTA_META_SREG: source register (NLA_U32)
96518518
PM		 563 */
564enum nft_meta_attributes {
565 NFTA_META_UNSPEC,
566 NFTA_META_DREG,
567 NFTA_META_KEY,
e035b77a 568 NFTA_META_SREG,
96518518
PM		 569 __NFTA_META_MAX
570};
571#define NFTA_META_MAX (__NFTA_META_MAX - 1)
572
573/**
574 * enum nft_ct_keys - nf_tables ct expression keys
575 *
576 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
577 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
578 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
579 * @NFT_CT_MARK: conntrack mark value
580 * @NFT_CT_SECMARK: conntrack secmark value
581 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
582 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
583 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
584 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
585 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
586 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
587 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
588 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
589 */
590enum nft_ct_keys {
591 NFT_CT_STATE,
592 NFT_CT_DIRECTION,
593 NFT_CT_STATUS,
594 NFT_CT_MARK,
595 NFT_CT_SECMARK,
596 NFT_CT_EXPIRATION,
597 NFT_CT_HELPER,
598 NFT_CT_L3PROTOCOL,
599 NFT_CT_SRC,
600 NFT_CT_DST,
601 NFT_CT_PROTOCOL,
602 NFT_CT_PROTO_SRC,
603 NFT_CT_PROTO_DST,
604};
605
606/**
607 * enum nft_ct_attributes - nf_tables ct expression netlink attributes
608 *
609 * @NFTA_CT_DREG: destination register (NLA_U32)
610 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
611 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
612 */
613enum nft_ct_attributes {
614 NFTA_CT_UNSPEC,
615 NFTA_CT_DREG,
616 NFTA_CT_KEY,
617 NFTA_CT_DIRECTION,
618 __NFTA_CT_MAX
619};
620#define NFTA_CT_MAX (__NFTA_CT_MAX - 1)
621
622/**
623 * enum nft_limit_attributes - nf_tables limit expression netlink attributes
624 *
625 * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
626 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
627 */
628enum nft_limit_attributes {
629 NFTA_LIMIT_UNSPEC,
630 NFTA_LIMIT_RATE,
631 NFTA_LIMIT_UNIT,
632 __NFTA_LIMIT_MAX
633};
634#define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1)
635
636/**
637 * enum nft_counter_attributes - nf_tables counter expression netlink attributes
638 *
639 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
640 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
641 */
642enum nft_counter_attributes {
643 NFTA_COUNTER_UNSPEC,
644 NFTA_COUNTER_BYTES,
645 NFTA_COUNTER_PACKETS,
646 __NFTA_COUNTER_MAX
647};
648#define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1)
649
650/**
651 * enum nft_log_attributes - nf_tables log expression netlink attributes
652 *
653 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
654 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
655 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
656 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
657 */
658enum nft_log_attributes {
659 NFTA_LOG_UNSPEC,
660 NFTA_LOG_GROUP,
661 NFTA_LOG_PREFIX,
662 NFTA_LOG_SNAPLEN,
663 NFTA_LOG_QTHRESHOLD,
664 __NFTA_LOG_MAX
665};
666#define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1)
667
0aff078d
EL		 668/**
669 * enum nft_queue_attributes - nf_tables queue expression netlink attributes
670 *
671 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
672 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
673 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
674 */
675enum nft_queue_attributes {
676 NFTA_QUEUE_UNSPEC,
677 NFTA_QUEUE_NUM,
678 NFTA_QUEUE_TOTAL,
679 NFTA_QUEUE_FLAGS,
680 __NFTA_QUEUE_MAX
681};
682#define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1)
683
684#define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */
685#define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */
686#define NFT_QUEUE_FLAG_MASK 0x03
687
96518518
PM		 688/**
689 * enum nft_reject_types - nf_tables reject expression reject types
690 *
691 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
692 * @NFT_REJECT_TCP_RST: reject using TCP RST
693 */
694enum nft_reject_types {
695 NFT_REJECT_ICMP_UNREACH,
696 NFT_REJECT_TCP_RST,
697};
698
699/**
700 * enum nft_reject_attributes - nf_tables reject expression netlink attributes
701 *
702 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
703 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
704 */
705enum nft_reject_attributes {
706 NFTA_REJECT_UNSPEC,
707 NFTA_REJECT_TYPE,
708 NFTA_REJECT_ICMP_CODE,
709 __NFTA_REJECT_MAX
710};
711#define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1)
712
713/**
714 * enum nft_nat_types - nf_tables nat expression NAT types
715 *
716 * @NFT_NAT_SNAT: source NAT
717 * @NFT_NAT_DNAT: destination NAT
718 */
719enum nft_nat_types {
720 NFT_NAT_SNAT,
721 NFT_NAT_DNAT,
722};
723
724/**
725 * enum nft_nat_attributes - nf_tables nat expression netlink attributes
726 *
727 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
eb31628e
TB		 728 * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
729 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
730 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
731 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
732 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
96518518
PM		 733 */
734enum nft_nat_attributes {
735 NFTA_NAT_UNSPEC,
736 NFTA_NAT_TYPE,
eb31628e
TB		 737 NFTA_NAT_FAMILY,
738 NFTA_NAT_REG_ADDR_MIN,
739 NFTA_NAT_REG_ADDR_MAX,
740 NFTA_NAT_REG_PROTO_MIN,
741 NFTA_NAT_REG_PROTO_MAX,
96518518
PM		 742 __NFTA_NAT_MAX
743};
744#define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1)
745
746#endif /* _LINUX_NF_TABLES_H */
Linux kernel - Deliverables
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