1 #ifndef _LINUX_NF_TABLES_H 2 #define _LINUX_NF_TABLES_H 3 4 #define NFT_CHAIN_MAXNAMELEN 32 5 #define NFT_USERDATA_MAXLEN 256 6 7 enum nft_registers { 8 NFT_REG_VERDICT, 9 NFT_REG_1, 10 NFT_REG_2, 11 NFT_REG_3, 12 NFT_REG_4, 13 __NFT_REG_MAX 14 }; 15 #define NFT_REG_MAX (__NFT_REG_MAX - 1) 16 17 /** 18 * enum nft_verdicts - nf_tables internal verdicts 19 * 20 * @NFT_CONTINUE: continue evaluation of the current rule 21 * @NFT_BREAK: terminate evaluation of the current rule 22 * @NFT_JUMP: push the current chain on the jump stack and jump to a chain 23 * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack 24 * @NFT_RETURN: return to the topmost chain on the jump stack 25 * 26 * The nf_tables verdicts share their numeric space with the netfilter verdicts. 27 */ 28 enum nft_verdicts { 29 NFT_CONTINUE = -1, 30 NFT_BREAK = -2, 31 NFT_JUMP = -3, 32 NFT_GOTO = -4, 33 NFT_RETURN = -5, 34 }; 35 36 /** 37 * enum nf_tables_msg_types - nf_tables netlink message types 38 * 39 * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes) 40 * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes) 41 * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes) 42 * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes) 43 * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes) 44 * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes) 45 * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes) 46 * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes) 47 * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes) 48 * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes) 49 * @NFT_MSG_GETSET: get a set (enum nft_set_attributes) 50 * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes) 51 * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes) 52 * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes) 53 * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes) 54 */ 55 enum nf_tables_msg_types { 56 NFT_MSG_NEWTABLE, 57 NFT_MSG_GETTABLE, 58 NFT_MSG_DELTABLE, 59 NFT_MSG_NEWCHAIN, 60 NFT_MSG_GETCHAIN, 61 NFT_MSG_DELCHAIN, 62 NFT_MSG_NEWRULE, 63 NFT_MSG_GETRULE, 64 NFT_MSG_DELRULE, 65 NFT_MSG_NEWSET, 66 NFT_MSG_GETSET, 67 NFT_MSG_DELSET, 68 NFT_MSG_NEWSETELEM, 69 NFT_MSG_GETSETELEM, 70 NFT_MSG_DELSETELEM, 71 NFT_MSG_MAX, 72 }; 73 74 /** 75 * enum nft_list_attributes - nf_tables generic list netlink attributes 76 * 77 * @NFTA_LIST_ELEM: list element (NLA_NESTED) 78 */ 79 enum nft_list_attributes { 80 NFTA_LIST_UNPEC, 81 NFTA_LIST_ELEM, 82 __NFTA_LIST_MAX 83 }; 84 #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1) 85 86 /** 87 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes 88 * 89 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32) 90 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32) 91 */ 92 enum nft_hook_attributes { 93 NFTA_HOOK_UNSPEC, 94 NFTA_HOOK_HOOKNUM, 95 NFTA_HOOK_PRIORITY, 96 __NFTA_HOOK_MAX 97 }; 98 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1) 99 100 /** 101 * enum nft_table_flags - nf_tables table flags 102 * 103 * @NFT_TABLE_F_DORMANT: this table is not active 104 */ 105 enum nft_table_flags { 106 NFT_TABLE_F_DORMANT = 0x1, 107 }; 108 109 /** 110 * enum nft_table_attributes - nf_tables table netlink attributes 111 * 112 * @NFTA_TABLE_NAME: name of the table (NLA_STRING) 113 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32) 114 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32) 115 */ 116 enum nft_table_attributes { 117 NFTA_TABLE_UNSPEC, 118 NFTA_TABLE_NAME, 119 NFTA_TABLE_FLAGS, 120 NFTA_TABLE_USE, 121 __NFTA_TABLE_MAX 122 }; 123 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1) 124 125 /** 126 * enum nft_chain_attributes - nf_tables chain netlink attributes 127 * 128 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING) 129 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64) 130 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING) 131 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes) 132 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32) 133 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32) 134 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING) 135 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes) 136 */ 137 enum nft_chain_attributes { 138 NFTA_CHAIN_UNSPEC, 139 NFTA_CHAIN_TABLE, 140 NFTA_CHAIN_HANDLE, 141 NFTA_CHAIN_NAME, 142 NFTA_CHAIN_HOOK, 143 NFTA_CHAIN_POLICY, 144 NFTA_CHAIN_USE, 145 NFTA_CHAIN_TYPE, 146 NFTA_CHAIN_COUNTERS, 147 __NFTA_CHAIN_MAX 148 }; 149 #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1) 150 151 /** 152 * enum nft_rule_attributes - nf_tables rule netlink attributes 153 * 154 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING) 155 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING) 156 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64) 157 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes) 158 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes) 159 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64) 160 * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN) 161 */ 162 enum nft_rule_attributes { 163 NFTA_RULE_UNSPEC, 164 NFTA_RULE_TABLE, 165 NFTA_RULE_CHAIN, 166 NFTA_RULE_HANDLE, 167 NFTA_RULE_EXPRESSIONS, 168 NFTA_RULE_COMPAT, 169 NFTA_RULE_POSITION, 170 NFTA_RULE_USERDATA, 171 __NFTA_RULE_MAX 172 }; 173 #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1) 174 175 /** 176 * enum nft_rule_compat_flags - nf_tables rule compat flags 177 * 178 * @NFT_RULE_COMPAT_F_INV: invert the check result 179 */ 180 enum nft_rule_compat_flags { 181 NFT_RULE_COMPAT_F_INV = (1 << 1), 182 NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV, 183 }; 184 185 /** 186 * enum nft_rule_compat_attributes - nf_tables rule compat attributes 187 * 188 * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32) 189 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32) 190 */ 191 enum nft_rule_compat_attributes { 192 NFTA_RULE_COMPAT_UNSPEC, 193 NFTA_RULE_COMPAT_PROTO, 194 NFTA_RULE_COMPAT_FLAGS, 195 __NFTA_RULE_COMPAT_MAX 196 }; 197 #define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1) 198 199 /** 200 * enum nft_set_flags - nf_tables set flags 201 * 202 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink 203 * @NFT_SET_CONSTANT: set contents may not change while bound 204 * @NFT_SET_INTERVAL: set contains intervals 205 * @NFT_SET_MAP: set is used as a dictionary 206 */ 207 enum nft_set_flags { 208 NFT_SET_ANONYMOUS = 0x1, 209 NFT_SET_CONSTANT = 0x2, 210 NFT_SET_INTERVAL = 0x4, 211 NFT_SET_MAP = 0x8, 212 }; 213 214 /** 215 * enum nft_set_policies - set selection policy 216 * 217 * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use 218 * @NFT_SET_POL_MEMORY: prefer low memory use over high performance 219 */ 220 enum nft_set_policies { 221 NFT_SET_POL_PERFORMANCE, 222 NFT_SET_POL_MEMORY, 223 }; 224 225 /** 226 * enum nft_set_desc_attributes - set element description 227 * 228 * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32) 229 */ 230 enum nft_set_desc_attributes { 231 NFTA_SET_DESC_UNSPEC, 232 NFTA_SET_DESC_SIZE, 233 __NFTA_SET_DESC_MAX 234 }; 235 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1) 236 237 /** 238 * enum nft_set_attributes - nf_tables set netlink attributes 239 * 240 * @NFTA_SET_TABLE: table name (NLA_STRING) 241 * @NFTA_SET_NAME: set name (NLA_STRING) 242 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32) 243 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32) 244 * @NFTA_SET_KEY_LEN: key data length (NLA_U32) 245 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32) 246 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32) 247 * @NFTA_SET_POLICY: selection policy (NLA_U32) 248 * @NFTA_SET_DESC: set description (NLA_NESTED) 249 * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32) 250 */ 251 enum nft_set_attributes { 252 NFTA_SET_UNSPEC, 253 NFTA_SET_TABLE, 254 NFTA_SET_NAME, 255 NFTA_SET_FLAGS, 256 NFTA_SET_KEY_TYPE, 257 NFTA_SET_KEY_LEN, 258 NFTA_SET_DATA_TYPE, 259 NFTA_SET_DATA_LEN, 260 NFTA_SET_POLICY, 261 NFTA_SET_DESC, 262 NFTA_SET_ID, 263 __NFTA_SET_MAX 264 }; 265 #define NFTA_SET_MAX (__NFTA_SET_MAX - 1) 266 267 /** 268 * enum nft_set_elem_flags - nf_tables set element flags 269 * 270 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval 271 */ 272 enum nft_set_elem_flags { 273 NFT_SET_ELEM_INTERVAL_END = 0x1, 274 }; 275 276 /** 277 * enum nft_set_elem_attributes - nf_tables set element netlink attributes 278 * 279 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data) 280 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes) 281 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32) 282 */ 283 enum nft_set_elem_attributes { 284 NFTA_SET_ELEM_UNSPEC, 285 NFTA_SET_ELEM_KEY, 286 NFTA_SET_ELEM_DATA, 287 NFTA_SET_ELEM_FLAGS, 288 __NFTA_SET_ELEM_MAX 289 }; 290 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1) 291 292 /** 293 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes 294 * 295 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING) 296 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING) 297 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes) 298 * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32) 299 */ 300 enum nft_set_elem_list_attributes { 301 NFTA_SET_ELEM_LIST_UNSPEC, 302 NFTA_SET_ELEM_LIST_TABLE, 303 NFTA_SET_ELEM_LIST_SET, 304 NFTA_SET_ELEM_LIST_ELEMENTS, 305 NFTA_SET_ELEM_LIST_SET_ID, 306 __NFTA_SET_ELEM_LIST_MAX 307 }; 308 #define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1) 309 310 /** 311 * enum nft_data_types - nf_tables data types 312 * 313 * @NFT_DATA_VALUE: generic data 314 * @NFT_DATA_VERDICT: netfilter verdict 315 * 316 * The type of data is usually determined by the kernel directly and is not 317 * explicitly specified by userspace. The only difference are sets, where 318 * userspace specifies the key and mapping data types. 319 * 320 * The values 0xffffff00-0xffffffff are reserved for internally used types. 321 * The remaining range can be freely used by userspace to encode types, all 322 * values are equivalent to NFT_DATA_VALUE. 323 */ 324 enum nft_data_types { 325 NFT_DATA_VALUE, 326 NFT_DATA_VERDICT = 0xffffff00U, 327 }; 328 329 #define NFT_DATA_RESERVED_MASK 0xffffff00U 330 331 /** 332 * enum nft_data_attributes - nf_tables data netlink attributes 333 * 334 * @NFTA_DATA_VALUE: generic data (NLA_BINARY) 335 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes) 336 */ 337 enum nft_data_attributes { 338 NFTA_DATA_UNSPEC, 339 NFTA_DATA_VALUE, 340 NFTA_DATA_VERDICT, 341 __NFTA_DATA_MAX 342 }; 343 #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1) 344 345 /** 346 * enum nft_verdict_attributes - nf_tables verdict netlink attributes 347 * 348 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts) 349 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING) 350 */ 351 enum nft_verdict_attributes { 352 NFTA_VERDICT_UNSPEC, 353 NFTA_VERDICT_CODE, 354 NFTA_VERDICT_CHAIN, 355 __NFTA_VERDICT_MAX 356 }; 357 #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1) 358 359 /** 360 * enum nft_expr_attributes - nf_tables expression netlink attributes 361 * 362 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING) 363 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED) 364 */ 365 enum nft_expr_attributes { 366 NFTA_EXPR_UNSPEC, 367 NFTA_EXPR_NAME, 368 NFTA_EXPR_DATA, 369 __NFTA_EXPR_MAX 370 }; 371 #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1) 372 373 /** 374 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes 375 * 376 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32) 377 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes) 378 */ 379 enum nft_immediate_attributes { 380 NFTA_IMMEDIATE_UNSPEC, 381 NFTA_IMMEDIATE_DREG, 382 NFTA_IMMEDIATE_DATA, 383 __NFTA_IMMEDIATE_MAX 384 }; 385 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1) 386 387 /** 388 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes 389 * 390 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers) 391 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers) 392 * @NFTA_BITWISE_LEN: length of operands (NLA_U32) 393 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes) 394 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes) 395 * 396 * The bitwise expression performs the following operation: 397 * 398 * dreg = (sreg & mask) ^ xor 399 * 400 * which allow to express all bitwise operations: 401 * 402 * mask xor 403 * NOT: 1 1 404 * OR: 0 x 405 * XOR: 1 x 406 * AND: x 0 407 */ 408 enum nft_bitwise_attributes { 409 NFTA_BITWISE_UNSPEC, 410 NFTA_BITWISE_SREG, 411 NFTA_BITWISE_DREG, 412 NFTA_BITWISE_LEN, 413 NFTA_BITWISE_MASK, 414 NFTA_BITWISE_XOR, 415 __NFTA_BITWISE_MAX 416 }; 417 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1) 418 419 /** 420 * enum nft_byteorder_ops - nf_tables byteorder operators 421 * 422 * @NFT_BYTEORDER_NTOH: network to host operator 423 * @NFT_BYTEORDER_HTON: host to network opertaor 424 */ 425 enum nft_byteorder_ops { 426 NFT_BYTEORDER_NTOH, 427 NFT_BYTEORDER_HTON, 428 }; 429 430 /** 431 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes 432 * 433 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers) 434 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers) 435 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops) 436 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32) 437 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4) 438 */ 439 enum nft_byteorder_attributes { 440 NFTA_BYTEORDER_UNSPEC, 441 NFTA_BYTEORDER_SREG, 442 NFTA_BYTEORDER_DREG, 443 NFTA_BYTEORDER_OP, 444 NFTA_BYTEORDER_LEN, 445 NFTA_BYTEORDER_SIZE, 446 __NFTA_BYTEORDER_MAX 447 }; 448 #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1) 449 450 /** 451 * enum nft_cmp_ops - nf_tables relational operator 452 * 453 * @NFT_CMP_EQ: equal 454 * @NFT_CMP_NEQ: not equal 455 * @NFT_CMP_LT: less than 456 * @NFT_CMP_LTE: less than or equal to 457 * @NFT_CMP_GT: greater than 458 * @NFT_CMP_GTE: greater than or equal to 459 */ 460 enum nft_cmp_ops { 461 NFT_CMP_EQ, 462 NFT_CMP_NEQ, 463 NFT_CMP_LT, 464 NFT_CMP_LTE, 465 NFT_CMP_GT, 466 NFT_CMP_GTE, 467 }; 468 469 /** 470 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes 471 * 472 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers) 473 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops) 474 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes) 475 */ 476 enum nft_cmp_attributes { 477 NFTA_CMP_UNSPEC, 478 NFTA_CMP_SREG, 479 NFTA_CMP_OP, 480 NFTA_CMP_DATA, 481 __NFTA_CMP_MAX 482 }; 483 #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1) 484 485 /** 486 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes 487 * 488 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING) 489 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers) 490 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers) 491 * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32) 492 */ 493 enum nft_lookup_attributes { 494 NFTA_LOOKUP_UNSPEC, 495 NFTA_LOOKUP_SET, 496 NFTA_LOOKUP_SREG, 497 NFTA_LOOKUP_DREG, 498 NFTA_LOOKUP_SET_ID, 499 __NFTA_LOOKUP_MAX 500 }; 501 #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1) 502 503 /** 504 * enum nft_payload_bases - nf_tables payload expression offset bases 505 * 506 * @NFT_PAYLOAD_LL_HEADER: link layer header 507 * @NFT_PAYLOAD_NETWORK_HEADER: network header 508 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header 509 */ 510 enum nft_payload_bases { 511 NFT_PAYLOAD_LL_HEADER, 512 NFT_PAYLOAD_NETWORK_HEADER, 513 NFT_PAYLOAD_TRANSPORT_HEADER, 514 }; 515 516 /** 517 * enum nft_payload_attributes - nf_tables payload expression netlink attributes 518 * 519 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers) 520 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases) 521 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32) 522 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32) 523 */ 524 enum nft_payload_attributes { 525 NFTA_PAYLOAD_UNSPEC, 526 NFTA_PAYLOAD_DREG, 527 NFTA_PAYLOAD_BASE, 528 NFTA_PAYLOAD_OFFSET, 529 NFTA_PAYLOAD_LEN, 530 __NFTA_PAYLOAD_MAX 531 }; 532 #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1) 533 534 /** 535 * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes 536 * 537 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers) 538 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8) 539 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32) 540 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32) 541 */ 542 enum nft_exthdr_attributes { 543 NFTA_EXTHDR_UNSPEC, 544 NFTA_EXTHDR_DREG, 545 NFTA_EXTHDR_TYPE, 546 NFTA_EXTHDR_OFFSET, 547 NFTA_EXTHDR_LEN, 548 __NFTA_EXTHDR_MAX 549 }; 550 #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1) 551 552 /** 553 * enum nft_meta_keys - nf_tables meta expression keys 554 * 555 * @NFT_META_LEN: packet length (skb->len) 556 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT 557 * @NFT_META_PRIORITY: packet priority (skb->priority) 558 * @NFT_META_MARK: packet mark (skb->mark) 559 * @NFT_META_IIF: packet input interface index (dev->ifindex) 560 * @NFT_META_OIF: packet output interface index (dev->ifindex) 561 * @NFT_META_IIFNAME: packet input interface name (dev->name) 562 * @NFT_META_OIFNAME: packet output interface name (dev->name) 563 * @NFT_META_IIFTYPE: packet input interface type (dev->type) 564 * @NFT_META_OIFTYPE: packet output interface type (dev->type) 565 * @NFT_META_SKUID: originating socket UID (fsuid) 566 * @NFT_META_SKGID: originating socket GID (fsgid) 567 * @NFT_META_NFTRACE: packet nftrace bit 568 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid) 569 * @NFT_META_SECMARK: packet secmark (skb->secmark) 570 * @NFT_META_NFPROTO: netfilter protocol 571 * @NFT_META_L4PROTO: layer 4 protocol number 572 * @NFT_META_BRI_IIFNAME: packet input bridge interface name 573 * @NFT_META_BRI_OIFNAME: packet output bridge interface name 574 */ 575 enum nft_meta_keys { 576 NFT_META_LEN, 577 NFT_META_PROTOCOL, 578 NFT_META_PRIORITY, 579 NFT_META_MARK, 580 NFT_META_IIF, 581 NFT_META_OIF, 582 NFT_META_IIFNAME, 583 NFT_META_OIFNAME, 584 NFT_META_IIFTYPE, 585 NFT_META_OIFTYPE, 586 NFT_META_SKUID, 587 NFT_META_SKGID, 588 NFT_META_NFTRACE, 589 NFT_META_RTCLASSID, 590 NFT_META_SECMARK, 591 NFT_META_NFPROTO, 592 NFT_META_L4PROTO, 593 NFT_META_BRI_IIFNAME, 594 NFT_META_BRI_OIFNAME, 595 }; 596 597 /** 598 * enum nft_meta_attributes - nf_tables meta expression netlink attributes 599 * 600 * @NFTA_META_DREG: destination register (NLA_U32) 601 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys) 602 * @NFTA_META_SREG: source register (NLA_U32) 603 */ 604 enum nft_meta_attributes { 605 NFTA_META_UNSPEC, 606 NFTA_META_DREG, 607 NFTA_META_KEY, 608 NFTA_META_SREG, 609 __NFTA_META_MAX 610 }; 611 #define NFTA_META_MAX (__NFTA_META_MAX - 1) 612 613 /** 614 * enum nft_ct_keys - nf_tables ct expression keys 615 * 616 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info) 617 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir) 618 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status) 619 * @NFT_CT_MARK: conntrack mark value 620 * @NFT_CT_SECMARK: conntrack secmark value 621 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms 622 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack 623 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol 624 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address) 625 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address) 626 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol 627 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source 628 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination 629 */ 630 enum nft_ct_keys { 631 NFT_CT_STATE, 632 NFT_CT_DIRECTION, 633 NFT_CT_STATUS, 634 NFT_CT_MARK, 635 NFT_CT_SECMARK, 636 NFT_CT_EXPIRATION, 637 NFT_CT_HELPER, 638 NFT_CT_L3PROTOCOL, 639 NFT_CT_SRC, 640 NFT_CT_DST, 641 NFT_CT_PROTOCOL, 642 NFT_CT_PROTO_SRC, 643 NFT_CT_PROTO_DST, 644 NFT_CT_LABELS, 645 }; 646 647 /** 648 * enum nft_ct_attributes - nf_tables ct expression netlink attributes 649 * 650 * @NFTA_CT_DREG: destination register (NLA_U32) 651 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys) 652 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8) 653 * @NFTA_CT_SREG: source register (NLA_U32) 654 */ 655 enum nft_ct_attributes { 656 NFTA_CT_UNSPEC, 657 NFTA_CT_DREG, 658 NFTA_CT_KEY, 659 NFTA_CT_DIRECTION, 660 NFTA_CT_SREG, 661 __NFTA_CT_MAX 662 }; 663 #define NFTA_CT_MAX (__NFTA_CT_MAX - 1) 664 665 /** 666 * enum nft_limit_attributes - nf_tables limit expression netlink attributes 667 * 668 * @NFTA_LIMIT_RATE: refill rate (NLA_U64) 669 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64) 670 */ 671 enum nft_limit_attributes { 672 NFTA_LIMIT_UNSPEC, 673 NFTA_LIMIT_RATE, 674 NFTA_LIMIT_UNIT, 675 __NFTA_LIMIT_MAX 676 }; 677 #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1) 678 679 /** 680 * enum nft_counter_attributes - nf_tables counter expression netlink attributes 681 * 682 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64) 683 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64) 684 */ 685 enum nft_counter_attributes { 686 NFTA_COUNTER_UNSPEC, 687 NFTA_COUNTER_BYTES, 688 NFTA_COUNTER_PACKETS, 689 __NFTA_COUNTER_MAX 690 }; 691 #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1) 692 693 /** 694 * enum nft_log_attributes - nf_tables log expression netlink attributes 695 * 696 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32) 697 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING) 698 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32) 699 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32) 700 * @NFTA_LOG_LEVEL: log level (NLA_U32) 701 * @NFTA_LOG_FLAGS: logging flags (NLA_U32) 702 */ 703 enum nft_log_attributes { 704 NFTA_LOG_UNSPEC, 705 NFTA_LOG_GROUP, 706 NFTA_LOG_PREFIX, 707 NFTA_LOG_SNAPLEN, 708 NFTA_LOG_QTHRESHOLD, 709 NFTA_LOG_LEVEL, 710 NFTA_LOG_FLAGS, 711 __NFTA_LOG_MAX 712 }; 713 #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1) 714 715 /** 716 * enum nft_queue_attributes - nf_tables queue expression netlink attributes 717 * 718 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16) 719 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16) 720 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16) 721 */ 722 enum nft_queue_attributes { 723 NFTA_QUEUE_UNSPEC, 724 NFTA_QUEUE_NUM, 725 NFTA_QUEUE_TOTAL, 726 NFTA_QUEUE_FLAGS, 727 __NFTA_QUEUE_MAX 728 }; 729 #define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1) 730 731 #define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */ 732 #define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */ 733 #define NFT_QUEUE_FLAG_MASK 0x03 734 735 /** 736 * enum nft_reject_types - nf_tables reject expression reject types 737 * 738 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable 739 * @NFT_REJECT_TCP_RST: reject using TCP RST 740 */ 741 enum nft_reject_types { 742 NFT_REJECT_ICMP_UNREACH, 743 NFT_REJECT_TCP_RST, 744 }; 745 746 /** 747 * enum nft_reject_attributes - nf_tables reject expression netlink attributes 748 * 749 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types) 750 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8) 751 */ 752 enum nft_reject_attributes { 753 NFTA_REJECT_UNSPEC, 754 NFTA_REJECT_TYPE, 755 NFTA_REJECT_ICMP_CODE, 756 __NFTA_REJECT_MAX 757 }; 758 #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1) 759 760 /** 761 * enum nft_nat_types - nf_tables nat expression NAT types 762 * 763 * @NFT_NAT_SNAT: source NAT 764 * @NFT_NAT_DNAT: destination NAT 765 */ 766 enum nft_nat_types { 767 NFT_NAT_SNAT, 768 NFT_NAT_DNAT, 769 }; 770 771 /** 772 * enum nft_nat_attributes - nf_tables nat expression netlink attributes 773 * 774 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types) 775 * @NFTA_NAT_FAMILY: NAT family (NLA_U32) 776 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers) 777 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers) 778 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers) 779 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers) 780 */ 781 enum nft_nat_attributes { 782 NFTA_NAT_UNSPEC, 783 NFTA_NAT_TYPE, 784 NFTA_NAT_FAMILY, 785 NFTA_NAT_REG_ADDR_MIN, 786 NFTA_NAT_REG_ADDR_MAX, 787 NFTA_NAT_REG_PROTO_MIN, 788 NFTA_NAT_REG_PROTO_MAX, 789 __NFTA_NAT_MAX 790 }; 791 #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1) 792 793 #endif /* _LINUX_NF_TABLES_H */ 794
