1 #ifndef _LINUX_NF_TABLES_H 2 #define _LINUX_NF_TABLES_H 3 4 #define NFT_TABLE_MAXNAMELEN 32 5 #define NFT_CHAIN_MAXNAMELEN 32 6 #define NFT_USERDATA_MAXLEN 256 7 8 /** 9 * enum nft_registers - nf_tables registers 10 * 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. 16 */ 17 enum nft_registers { 18 NFT_REG_VERDICT, 19 NFT_REG_1, 20 NFT_REG_2, 21 NFT_REG_3, 22 NFT_REG_4, 23 __NFT_REG_MAX, 24 25 NFT_REG32_00 = 8, 26 MFT_REG32_01, 27 NFT_REG32_02, 28 NFT_REG32_03, 29 NFT_REG32_04, 30 NFT_REG32_05, 31 NFT_REG32_06, 32 NFT_REG32_07, 33 NFT_REG32_08, 34 NFT_REG32_09, 35 NFT_REG32_10, 36 NFT_REG32_11, 37 NFT_REG32_12, 38 NFT_REG32_13, 39 NFT_REG32_14, 40 NFT_REG32_15, 41 }; 42 #define NFT_REG_MAX (__NFT_REG_MAX - 1) 43 44 #define NFT_REG_SIZE 16 45 #define NFT_REG32_SIZE 4 46 47 /** 48 * enum nft_verdicts - nf_tables internal verdicts 49 * 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 55 * 56 * The nf_tables verdicts share their numeric space with the netfilter verdicts. 57 */ 58 enum nft_verdicts { 59 NFT_CONTINUE = -1, 60 NFT_BREAK = -2, 61 NFT_JUMP = -3, 62 NFT_GOTO = -4, 63 NFT_RETURN = -5, 64 }; 65 66 /** 67 * enum nf_tables_msg_types - nf_tables netlink message types 68 * 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 */ 87 enum nf_tables_msg_types { 88 NFT_MSG_NEWTABLE, 89 NFT_MSG_GETTABLE, 90 NFT_MSG_DELTABLE, 91 NFT_MSG_NEWCHAIN, 92 NFT_MSG_GETCHAIN, 93 NFT_MSG_DELCHAIN, 94 NFT_MSG_NEWRULE, 95 NFT_MSG_GETRULE, 96 NFT_MSG_DELRULE, 97 NFT_MSG_NEWSET, 98 NFT_MSG_GETSET, 99 NFT_MSG_DELSET, 100 NFT_MSG_NEWSETELEM, 101 NFT_MSG_GETSETELEM, 102 NFT_MSG_DELSETELEM, 103 NFT_MSG_NEWGEN, 104 NFT_MSG_GETGEN, 105 NFT_MSG_MAX, 106 }; 107 108 /** 109 * enum nft_list_attributes - nf_tables generic list netlink attributes 110 * 111 * @NFTA_LIST_ELEM: list element (NLA_NESTED) 112 */ 113 enum nft_list_attributes { 114 NFTA_LIST_UNPEC, 115 NFTA_LIST_ELEM, 116 __NFTA_LIST_MAX 117 }; 118 #define NFTA_LIST_MAX (__NFTA_LIST_MAX - 1) 119 120 /** 121 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes 122 * 123 * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32) 124 * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32) 125 * @NFTA_HOOK_DEV: netdevice name (NLA_STRING) 126 */ 127 enum nft_hook_attributes { 128 NFTA_HOOK_UNSPEC, 129 NFTA_HOOK_HOOKNUM, 130 NFTA_HOOK_PRIORITY, 131 NFTA_HOOK_DEV, 132 __NFTA_HOOK_MAX 133 }; 134 #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1) 135 136 /** 137 * enum nft_table_flags - nf_tables table flags 138 * 139 * @NFT_TABLE_F_DORMANT: this table is not active 140 */ 141 enum nft_table_flags { 142 NFT_TABLE_F_DORMANT = 0x1, 143 }; 144 145 /** 146 * enum nft_table_attributes - nf_tables table netlink attributes 147 * 148 * @NFTA_TABLE_NAME: name of the table (NLA_STRING) 149 * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32) 150 * @NFTA_TABLE_USE: number of chains in this table (NLA_U32) 151 */ 152 enum nft_table_attributes { 153 NFTA_TABLE_UNSPEC, 154 NFTA_TABLE_NAME, 155 NFTA_TABLE_FLAGS, 156 NFTA_TABLE_USE, 157 __NFTA_TABLE_MAX 158 }; 159 #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1) 160 161 /** 162 * enum nft_chain_attributes - nf_tables chain netlink attributes 163 * 164 * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING) 165 * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64) 166 * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING) 167 * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes) 168 * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32) 169 * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32) 170 * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING) 171 * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes) 172 */ 173 enum nft_chain_attributes { 174 NFTA_CHAIN_UNSPEC, 175 NFTA_CHAIN_TABLE, 176 NFTA_CHAIN_HANDLE, 177 NFTA_CHAIN_NAME, 178 NFTA_CHAIN_HOOK, 179 NFTA_CHAIN_POLICY, 180 NFTA_CHAIN_USE, 181 NFTA_CHAIN_TYPE, 182 NFTA_CHAIN_COUNTERS, 183 __NFTA_CHAIN_MAX 184 }; 185 #define NFTA_CHAIN_MAX (__NFTA_CHAIN_MAX - 1) 186 187 /** 188 * enum nft_rule_attributes - nf_tables rule netlink attributes 189 * 190 * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING) 191 * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING) 192 * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64) 193 * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes) 194 * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes) 195 * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64) 196 * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN) 197 */ 198 enum nft_rule_attributes { 199 NFTA_RULE_UNSPEC, 200 NFTA_RULE_TABLE, 201 NFTA_RULE_CHAIN, 202 NFTA_RULE_HANDLE, 203 NFTA_RULE_EXPRESSIONS, 204 NFTA_RULE_COMPAT, 205 NFTA_RULE_POSITION, 206 NFTA_RULE_USERDATA, 207 __NFTA_RULE_MAX 208 }; 209 #define NFTA_RULE_MAX (__NFTA_RULE_MAX - 1) 210 211 /** 212 * enum nft_rule_compat_flags - nf_tables rule compat flags 213 * 214 * @NFT_RULE_COMPAT_F_INV: invert the check result 215 */ 216 enum nft_rule_compat_flags { 217 NFT_RULE_COMPAT_F_INV = (1 << 1), 218 NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV, 219 }; 220 221 /** 222 * enum nft_rule_compat_attributes - nf_tables rule compat attributes 223 * 224 * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32) 225 * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32) 226 */ 227 enum nft_rule_compat_attributes { 228 NFTA_RULE_COMPAT_UNSPEC, 229 NFTA_RULE_COMPAT_PROTO, 230 NFTA_RULE_COMPAT_FLAGS, 231 __NFTA_RULE_COMPAT_MAX 232 }; 233 #define NFTA_RULE_COMPAT_MAX (__NFTA_RULE_COMPAT_MAX - 1) 234 235 /** 236 * enum nft_set_flags - nf_tables set flags 237 * 238 * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink 239 * @NFT_SET_CONSTANT: set contents may not change while bound 240 * @NFT_SET_INTERVAL: set contains intervals 241 * @NFT_SET_MAP: set is used as a dictionary 242 * @NFT_SET_TIMEOUT: set uses timeouts 243 * @NFT_SET_EVAL: set contains expressions for evaluation 244 */ 245 enum nft_set_flags { 246 NFT_SET_ANONYMOUS = 0x1, 247 NFT_SET_CONSTANT = 0x2, 248 NFT_SET_INTERVAL = 0x4, 249 NFT_SET_MAP = 0x8, 250 NFT_SET_TIMEOUT = 0x10, 251 NFT_SET_EVAL = 0x20, 252 }; 253 254 /** 255 * enum nft_set_policies - set selection policy 256 * 257 * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use 258 * @NFT_SET_POL_MEMORY: prefer low memory use over high performance 259 */ 260 enum nft_set_policies { 261 NFT_SET_POL_PERFORMANCE, 262 NFT_SET_POL_MEMORY, 263 }; 264 265 /** 266 * enum nft_set_desc_attributes - set element description 267 * 268 * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32) 269 */ 270 enum nft_set_desc_attributes { 271 NFTA_SET_DESC_UNSPEC, 272 NFTA_SET_DESC_SIZE, 273 __NFTA_SET_DESC_MAX 274 }; 275 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1) 276 277 /** 278 * enum nft_set_attributes - nf_tables set netlink attributes 279 * 280 * @NFTA_SET_TABLE: table name (NLA_STRING) 281 * @NFTA_SET_NAME: set name (NLA_STRING) 282 * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32) 283 * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32) 284 * @NFTA_SET_KEY_LEN: key data length (NLA_U32) 285 * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32) 286 * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32) 287 * @NFTA_SET_POLICY: selection policy (NLA_U32) 288 * @NFTA_SET_DESC: set description (NLA_NESTED) 289 * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32) 290 * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64) 291 * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32) 292 */ 293 enum nft_set_attributes { 294 NFTA_SET_UNSPEC, 295 NFTA_SET_TABLE, 296 NFTA_SET_NAME, 297 NFTA_SET_FLAGS, 298 NFTA_SET_KEY_TYPE, 299 NFTA_SET_KEY_LEN, 300 NFTA_SET_DATA_TYPE, 301 NFTA_SET_DATA_LEN, 302 NFTA_SET_POLICY, 303 NFTA_SET_DESC, 304 NFTA_SET_ID, 305 NFTA_SET_TIMEOUT, 306 NFTA_SET_GC_INTERVAL, 307 __NFTA_SET_MAX 308 }; 309 #define NFTA_SET_MAX (__NFTA_SET_MAX - 1) 310 311 /** 312 * enum nft_set_elem_flags - nf_tables set element flags 313 * 314 * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval 315 */ 316 enum nft_set_elem_flags { 317 NFT_SET_ELEM_INTERVAL_END = 0x1, 318 }; 319 320 /** 321 * enum nft_set_elem_attributes - nf_tables set element netlink attributes 322 * 323 * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data) 324 * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes) 325 * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32) 326 * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64) 327 * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64) 328 * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY) 329 * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes) 330 */ 331 enum nft_set_elem_attributes { 332 NFTA_SET_ELEM_UNSPEC, 333 NFTA_SET_ELEM_KEY, 334 NFTA_SET_ELEM_DATA, 335 NFTA_SET_ELEM_FLAGS, 336 NFTA_SET_ELEM_TIMEOUT, 337 NFTA_SET_ELEM_EXPIRATION, 338 NFTA_SET_ELEM_USERDATA, 339 NFTA_SET_ELEM_EXPR, 340 __NFTA_SET_ELEM_MAX 341 }; 342 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1) 343 344 /** 345 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes 346 * 347 * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING) 348 * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING) 349 * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes) 350 * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32) 351 */ 352 enum nft_set_elem_list_attributes { 353 NFTA_SET_ELEM_LIST_UNSPEC, 354 NFTA_SET_ELEM_LIST_TABLE, 355 NFTA_SET_ELEM_LIST_SET, 356 NFTA_SET_ELEM_LIST_ELEMENTS, 357 NFTA_SET_ELEM_LIST_SET_ID, 358 __NFTA_SET_ELEM_LIST_MAX 359 }; 360 #define NFTA_SET_ELEM_LIST_MAX (__NFTA_SET_ELEM_LIST_MAX - 1) 361 362 /** 363 * enum nft_data_types - nf_tables data types 364 * 365 * @NFT_DATA_VALUE: generic data 366 * @NFT_DATA_VERDICT: netfilter verdict 367 * 368 * The type of data is usually determined by the kernel directly and is not 369 * explicitly specified by userspace. The only difference are sets, where 370 * userspace specifies the key and mapping data types. 371 * 372 * The values 0xffffff00-0xffffffff are reserved for internally used types. 373 * The remaining range can be freely used by userspace to encode types, all 374 * values are equivalent to NFT_DATA_VALUE. 375 */ 376 enum nft_data_types { 377 NFT_DATA_VALUE, 378 NFT_DATA_VERDICT = 0xffffff00U, 379 }; 380 381 #define NFT_DATA_RESERVED_MASK 0xffffff00U 382 383 /** 384 * enum nft_data_attributes - nf_tables data netlink attributes 385 * 386 * @NFTA_DATA_VALUE: generic data (NLA_BINARY) 387 * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes) 388 */ 389 enum nft_data_attributes { 390 NFTA_DATA_UNSPEC, 391 NFTA_DATA_VALUE, 392 NFTA_DATA_VERDICT, 393 __NFTA_DATA_MAX 394 }; 395 #define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1) 396 397 /* Maximum length of a value */ 398 #define NFT_DATA_VALUE_MAXLEN 64 399 400 /** 401 * enum nft_verdict_attributes - nf_tables verdict netlink attributes 402 * 403 * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts) 404 * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING) 405 */ 406 enum nft_verdict_attributes { 407 NFTA_VERDICT_UNSPEC, 408 NFTA_VERDICT_CODE, 409 NFTA_VERDICT_CHAIN, 410 __NFTA_VERDICT_MAX 411 }; 412 #define NFTA_VERDICT_MAX (__NFTA_VERDICT_MAX - 1) 413 414 /** 415 * enum nft_expr_attributes - nf_tables expression netlink attributes 416 * 417 * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING) 418 * @NFTA_EXPR_DATA: type specific data (NLA_NESTED) 419 */ 420 enum nft_expr_attributes { 421 NFTA_EXPR_UNSPEC, 422 NFTA_EXPR_NAME, 423 NFTA_EXPR_DATA, 424 __NFTA_EXPR_MAX 425 }; 426 #define NFTA_EXPR_MAX (__NFTA_EXPR_MAX - 1) 427 428 /** 429 * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes 430 * 431 * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32) 432 * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes) 433 */ 434 enum nft_immediate_attributes { 435 NFTA_IMMEDIATE_UNSPEC, 436 NFTA_IMMEDIATE_DREG, 437 NFTA_IMMEDIATE_DATA, 438 __NFTA_IMMEDIATE_MAX 439 }; 440 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1) 441 442 /** 443 * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes 444 * 445 * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers) 446 * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers) 447 * @NFTA_BITWISE_LEN: length of operands (NLA_U32) 448 * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes) 449 * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes) 450 * 451 * The bitwise expression performs the following operation: 452 * 453 * dreg = (sreg & mask) ^ xor 454 * 455 * which allow to express all bitwise operations: 456 * 457 * mask xor 458 * NOT: 1 1 459 * OR: 0 x 460 * XOR: 1 x 461 * AND: x 0 462 */ 463 enum nft_bitwise_attributes { 464 NFTA_BITWISE_UNSPEC, 465 NFTA_BITWISE_SREG, 466 NFTA_BITWISE_DREG, 467 NFTA_BITWISE_LEN, 468 NFTA_BITWISE_MASK, 469 NFTA_BITWISE_XOR, 470 __NFTA_BITWISE_MAX 471 }; 472 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1) 473 474 /** 475 * enum nft_byteorder_ops - nf_tables byteorder operators 476 * 477 * @NFT_BYTEORDER_NTOH: network to host operator 478 * @NFT_BYTEORDER_HTON: host to network opertaor 479 */ 480 enum nft_byteorder_ops { 481 NFT_BYTEORDER_NTOH, 482 NFT_BYTEORDER_HTON, 483 }; 484 485 /** 486 * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes 487 * 488 * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers) 489 * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers) 490 * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops) 491 * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32) 492 * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4) 493 */ 494 enum nft_byteorder_attributes { 495 NFTA_BYTEORDER_UNSPEC, 496 NFTA_BYTEORDER_SREG, 497 NFTA_BYTEORDER_DREG, 498 NFTA_BYTEORDER_OP, 499 NFTA_BYTEORDER_LEN, 500 NFTA_BYTEORDER_SIZE, 501 __NFTA_BYTEORDER_MAX 502 }; 503 #define NFTA_BYTEORDER_MAX (__NFTA_BYTEORDER_MAX - 1) 504 505 /** 506 * enum nft_cmp_ops - nf_tables relational operator 507 * 508 * @NFT_CMP_EQ: equal 509 * @NFT_CMP_NEQ: not equal 510 * @NFT_CMP_LT: less than 511 * @NFT_CMP_LTE: less than or equal to 512 * @NFT_CMP_GT: greater than 513 * @NFT_CMP_GTE: greater than or equal to 514 */ 515 enum nft_cmp_ops { 516 NFT_CMP_EQ, 517 NFT_CMP_NEQ, 518 NFT_CMP_LT, 519 NFT_CMP_LTE, 520 NFT_CMP_GT, 521 NFT_CMP_GTE, 522 }; 523 524 /** 525 * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes 526 * 527 * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers) 528 * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops) 529 * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes) 530 */ 531 enum nft_cmp_attributes { 532 NFTA_CMP_UNSPEC, 533 NFTA_CMP_SREG, 534 NFTA_CMP_OP, 535 NFTA_CMP_DATA, 536 __NFTA_CMP_MAX 537 }; 538 #define NFTA_CMP_MAX (__NFTA_CMP_MAX - 1) 539 540 /** 541 * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes 542 * 543 * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING) 544 * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers) 545 * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers) 546 * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32) 547 */ 548 enum nft_lookup_attributes { 549 NFTA_LOOKUP_UNSPEC, 550 NFTA_LOOKUP_SET, 551 NFTA_LOOKUP_SREG, 552 NFTA_LOOKUP_DREG, 553 NFTA_LOOKUP_SET_ID, 554 __NFTA_LOOKUP_MAX 555 }; 556 #define NFTA_LOOKUP_MAX (__NFTA_LOOKUP_MAX - 1) 557 558 enum nft_dynset_ops { 559 NFT_DYNSET_OP_ADD, 560 NFT_DYNSET_OP_UPDATE, 561 }; 562 563 /** 564 * enum nft_dynset_attributes - dynset expression attributes 565 * 566 * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING) 567 * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32) 568 * @NFTA_DYNSET_OP: operation (NLA_U32) 569 * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32) 570 * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32) 571 * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64) 572 * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes) 573 */ 574 enum nft_dynset_attributes { 575 NFTA_DYNSET_UNSPEC, 576 NFTA_DYNSET_SET_NAME, 577 NFTA_DYNSET_SET_ID, 578 NFTA_DYNSET_OP, 579 NFTA_DYNSET_SREG_KEY, 580 NFTA_DYNSET_SREG_DATA, 581 NFTA_DYNSET_TIMEOUT, 582 NFTA_DYNSET_EXPR, 583 __NFTA_DYNSET_MAX, 584 }; 585 #define NFTA_DYNSET_MAX (__NFTA_DYNSET_MAX - 1) 586 587 /** 588 * enum nft_payload_bases - nf_tables payload expression offset bases 589 * 590 * @NFT_PAYLOAD_LL_HEADER: link layer header 591 * @NFT_PAYLOAD_NETWORK_HEADER: network header 592 * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header 593 */ 594 enum nft_payload_bases { 595 NFT_PAYLOAD_LL_HEADER, 596 NFT_PAYLOAD_NETWORK_HEADER, 597 NFT_PAYLOAD_TRANSPORT_HEADER, 598 }; 599 600 /** 601 * enum nft_payload_attributes - nf_tables payload expression netlink attributes 602 * 603 * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers) 604 * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases) 605 * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32) 606 * @NFTA_PAYLOAD_LEN: payload length (NLA_U32) 607 */ 608 enum nft_payload_attributes { 609 NFTA_PAYLOAD_UNSPEC, 610 NFTA_PAYLOAD_DREG, 611 NFTA_PAYLOAD_BASE, 612 NFTA_PAYLOAD_OFFSET, 613 NFTA_PAYLOAD_LEN, 614 __NFTA_PAYLOAD_MAX 615 }; 616 #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1) 617 618 /** 619 * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes 620 * 621 * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers) 622 * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8) 623 * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32) 624 * @NFTA_EXTHDR_LEN: extension header length (NLA_U32) 625 */ 626 enum nft_exthdr_attributes { 627 NFTA_EXTHDR_UNSPEC, 628 NFTA_EXTHDR_DREG, 629 NFTA_EXTHDR_TYPE, 630 NFTA_EXTHDR_OFFSET, 631 NFTA_EXTHDR_LEN, 632 __NFTA_EXTHDR_MAX 633 }; 634 #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1) 635 636 /** 637 * enum nft_meta_keys - nf_tables meta expression keys 638 * 639 * @NFT_META_LEN: packet length (skb->len) 640 * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT 641 * @NFT_META_PRIORITY: packet priority (skb->priority) 642 * @NFT_META_MARK: packet mark (skb->mark) 643 * @NFT_META_IIF: packet input interface index (dev->ifindex) 644 * @NFT_META_OIF: packet output interface index (dev->ifindex) 645 * @NFT_META_IIFNAME: packet input interface name (dev->name) 646 * @NFT_META_OIFNAME: packet output interface name (dev->name) 647 * @NFT_META_IIFTYPE: packet input interface type (dev->type) 648 * @NFT_META_OIFTYPE: packet output interface type (dev->type) 649 * @NFT_META_SKUID: originating socket UID (fsuid) 650 * @NFT_META_SKGID: originating socket GID (fsgid) 651 * @NFT_META_NFTRACE: packet nftrace bit 652 * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid) 653 * @NFT_META_SECMARK: packet secmark (skb->secmark) 654 * @NFT_META_NFPROTO: netfilter protocol 655 * @NFT_META_L4PROTO: layer 4 protocol number 656 * @NFT_META_BRI_IIFNAME: packet input bridge interface name 657 * @NFT_META_BRI_OIFNAME: packet output bridge interface name 658 * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback 659 * @NFT_META_CPU: cpu id through smp_processor_id() 660 * @NFT_META_IIFGROUP: packet input interface group 661 * @NFT_META_OIFGROUP: packet output interface group 662 * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid) 663 */ 664 enum nft_meta_keys { 665 NFT_META_LEN, 666 NFT_META_PROTOCOL, 667 NFT_META_PRIORITY, 668 NFT_META_MARK, 669 NFT_META_IIF, 670 NFT_META_OIF, 671 NFT_META_IIFNAME, 672 NFT_META_OIFNAME, 673 NFT_META_IIFTYPE, 674 NFT_META_OIFTYPE, 675 NFT_META_SKUID, 676 NFT_META_SKGID, 677 NFT_META_NFTRACE, 678 NFT_META_RTCLASSID, 679 NFT_META_SECMARK, 680 NFT_META_NFPROTO, 681 NFT_META_L4PROTO, 682 NFT_META_BRI_IIFNAME, 683 NFT_META_BRI_OIFNAME, 684 NFT_META_PKTTYPE, 685 NFT_META_CPU, 686 NFT_META_IIFGROUP, 687 NFT_META_OIFGROUP, 688 NFT_META_CGROUP, 689 }; 690 691 /** 692 * enum nft_meta_attributes - nf_tables meta expression netlink attributes 693 * 694 * @NFTA_META_DREG: destination register (NLA_U32) 695 * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys) 696 * @NFTA_META_SREG: source register (NLA_U32) 697 */ 698 enum nft_meta_attributes { 699 NFTA_META_UNSPEC, 700 NFTA_META_DREG, 701 NFTA_META_KEY, 702 NFTA_META_SREG, 703 __NFTA_META_MAX 704 }; 705 #define NFTA_META_MAX (__NFTA_META_MAX - 1) 706 707 /** 708 * enum nft_ct_keys - nf_tables ct expression keys 709 * 710 * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info) 711 * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir) 712 * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status) 713 * @NFT_CT_MARK: conntrack mark value 714 * @NFT_CT_SECMARK: conntrack secmark value 715 * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms 716 * @NFT_CT_HELPER: connection tracking helper assigned to conntrack 717 * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol 718 * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address) 719 * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address) 720 * @NFT_CT_PROTOCOL: conntrack layer 4 protocol 721 * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source 722 * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination 723 */ 724 enum nft_ct_keys { 725 NFT_CT_STATE, 726 NFT_CT_DIRECTION, 727 NFT_CT_STATUS, 728 NFT_CT_MARK, 729 NFT_CT_SECMARK, 730 NFT_CT_EXPIRATION, 731 NFT_CT_HELPER, 732 NFT_CT_L3PROTOCOL, 733 NFT_CT_SRC, 734 NFT_CT_DST, 735 NFT_CT_PROTOCOL, 736 NFT_CT_PROTO_SRC, 737 NFT_CT_PROTO_DST, 738 NFT_CT_LABELS, 739 }; 740 741 /** 742 * enum nft_ct_attributes - nf_tables ct expression netlink attributes 743 * 744 * @NFTA_CT_DREG: destination register (NLA_U32) 745 * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys) 746 * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8) 747 * @NFTA_CT_SREG: source register (NLA_U32) 748 */ 749 enum nft_ct_attributes { 750 NFTA_CT_UNSPEC, 751 NFTA_CT_DREG, 752 NFTA_CT_KEY, 753 NFTA_CT_DIRECTION, 754 NFTA_CT_SREG, 755 __NFTA_CT_MAX 756 }; 757 #define NFTA_CT_MAX (__NFTA_CT_MAX - 1) 758 759 enum nft_limit_type { 760 NFT_LIMIT_PKTS, 761 NFT_LIMIT_PKT_BYTES 762 }; 763 764 /** 765 * enum nft_limit_attributes - nf_tables limit expression netlink attributes 766 * 767 * @NFTA_LIMIT_RATE: refill rate (NLA_U64) 768 * @NFTA_LIMIT_UNIT: refill unit (NLA_U64) 769 * @NFTA_LIMIT_BURST: burst (NLA_U32) 770 * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type) 771 */ 772 enum nft_limit_attributes { 773 NFTA_LIMIT_UNSPEC, 774 NFTA_LIMIT_RATE, 775 NFTA_LIMIT_UNIT, 776 NFTA_LIMIT_BURST, 777 NFTA_LIMIT_TYPE, 778 __NFTA_LIMIT_MAX 779 }; 780 #define NFTA_LIMIT_MAX (__NFTA_LIMIT_MAX - 1) 781 782 /** 783 * enum nft_counter_attributes - nf_tables counter expression netlink attributes 784 * 785 * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64) 786 * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64) 787 */ 788 enum nft_counter_attributes { 789 NFTA_COUNTER_UNSPEC, 790 NFTA_COUNTER_BYTES, 791 NFTA_COUNTER_PACKETS, 792 __NFTA_COUNTER_MAX 793 }; 794 #define NFTA_COUNTER_MAX (__NFTA_COUNTER_MAX - 1) 795 796 /** 797 * enum nft_log_attributes - nf_tables log expression netlink attributes 798 * 799 * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32) 800 * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING) 801 * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32) 802 * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32) 803 * @NFTA_LOG_LEVEL: log level (NLA_U32) 804 * @NFTA_LOG_FLAGS: logging flags (NLA_U32) 805 */ 806 enum nft_log_attributes { 807 NFTA_LOG_UNSPEC, 808 NFTA_LOG_GROUP, 809 NFTA_LOG_PREFIX, 810 NFTA_LOG_SNAPLEN, 811 NFTA_LOG_QTHRESHOLD, 812 NFTA_LOG_LEVEL, 813 NFTA_LOG_FLAGS, 814 __NFTA_LOG_MAX 815 }; 816 #define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1) 817 818 /** 819 * enum nft_queue_attributes - nf_tables queue expression netlink attributes 820 * 821 * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16) 822 * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16) 823 * @NFTA_QUEUE_FLAGS: various flags (NLA_U16) 824 */ 825 enum nft_queue_attributes { 826 NFTA_QUEUE_UNSPEC, 827 NFTA_QUEUE_NUM, 828 NFTA_QUEUE_TOTAL, 829 NFTA_QUEUE_FLAGS, 830 __NFTA_QUEUE_MAX 831 }; 832 #define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1) 833 834 #define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */ 835 #define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */ 836 #define NFT_QUEUE_FLAG_MASK 0x03 837 838 /** 839 * enum nft_reject_types - nf_tables reject expression reject types 840 * 841 * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable 842 * @NFT_REJECT_TCP_RST: reject using TCP RST 843 * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet 844 */ 845 enum nft_reject_types { 846 NFT_REJECT_ICMP_UNREACH, 847 NFT_REJECT_TCP_RST, 848 NFT_REJECT_ICMPX_UNREACH, 849 }; 850 851 /** 852 * enum nft_reject_code - Generic reject codes for IPv4/IPv6 853 * 854 * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable 855 * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable 856 * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable 857 * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited 858 * 859 * These codes are mapped to real ICMP and ICMPv6 codes. 860 */ 861 enum nft_reject_inet_code { 862 NFT_REJECT_ICMPX_NO_ROUTE = 0, 863 NFT_REJECT_ICMPX_PORT_UNREACH, 864 NFT_REJECT_ICMPX_HOST_UNREACH, 865 NFT_REJECT_ICMPX_ADMIN_PROHIBITED, 866 __NFT_REJECT_ICMPX_MAX 867 }; 868 #define NFT_REJECT_ICMPX_MAX (__NFT_REJECT_ICMPX_MAX - 1) 869 870 /** 871 * enum nft_reject_attributes - nf_tables reject expression netlink attributes 872 * 873 * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types) 874 * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8) 875 */ 876 enum nft_reject_attributes { 877 NFTA_REJECT_UNSPEC, 878 NFTA_REJECT_TYPE, 879 NFTA_REJECT_ICMP_CODE, 880 __NFTA_REJECT_MAX 881 }; 882 #define NFTA_REJECT_MAX (__NFTA_REJECT_MAX - 1) 883 884 /** 885 * enum nft_nat_types - nf_tables nat expression NAT types 886 * 887 * @NFT_NAT_SNAT: source NAT 888 * @NFT_NAT_DNAT: destination NAT 889 */ 890 enum nft_nat_types { 891 NFT_NAT_SNAT, 892 NFT_NAT_DNAT, 893 }; 894 895 /** 896 * enum nft_nat_attributes - nf_tables nat expression netlink attributes 897 * 898 * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types) 899 * @NFTA_NAT_FAMILY: NAT family (NLA_U32) 900 * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers) 901 * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers) 902 * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers) 903 * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers) 904 * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32) 905 */ 906 enum nft_nat_attributes { 907 NFTA_NAT_UNSPEC, 908 NFTA_NAT_TYPE, 909 NFTA_NAT_FAMILY, 910 NFTA_NAT_REG_ADDR_MIN, 911 NFTA_NAT_REG_ADDR_MAX, 912 NFTA_NAT_REG_PROTO_MIN, 913 NFTA_NAT_REG_PROTO_MAX, 914 NFTA_NAT_FLAGS, 915 __NFTA_NAT_MAX 916 }; 917 #define NFTA_NAT_MAX (__NFTA_NAT_MAX - 1) 918 919 /** 920 * enum nft_masq_attributes - nf_tables masquerade expression attributes 921 * 922 * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32) 923 */ 924 enum nft_masq_attributes { 925 NFTA_MASQ_UNSPEC, 926 NFTA_MASQ_FLAGS, 927 __NFTA_MASQ_MAX 928 }; 929 #define NFTA_MASQ_MAX (__NFTA_MASQ_MAX - 1) 930 931 /** 932 * enum nft_redir_attributes - nf_tables redirect expression netlink attributes 933 * 934 * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers) 935 * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers) 936 * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32) 937 */ 938 enum nft_redir_attributes { 939 NFTA_REDIR_UNSPEC, 940 NFTA_REDIR_REG_PROTO_MIN, 941 NFTA_REDIR_REG_PROTO_MAX, 942 NFTA_REDIR_FLAGS, 943 __NFTA_REDIR_MAX 944 }; 945 #define NFTA_REDIR_MAX (__NFTA_REDIR_MAX - 1) 946 947 /** 948 * enum nft_dup_attributes - nf_tables dup expression netlink attributes 949 * 950 * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers) 951 * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register) 952 */ 953 enum nft_dup_attributes { 954 NFTA_DUP_UNSPEC, 955 NFTA_DUP_SREG_ADDR, 956 NFTA_DUP_SREG_DEV, 957 __NFTA_DUP_MAX 958 }; 959 #define NFTA_DUP_MAX (__NFTA_DUP_MAX - 1) 960 961 /** 962 * enum nft_gen_attributes - nf_tables ruleset generation attributes 963 * 964 * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32) 965 */ 966 enum nft_gen_attributes { 967 NFTA_GEN_UNSPEC, 968 NFTA_GEN_ID, 969 __NFTA_GEN_MAX 970 }; 971 #define NFTA_GEN_MAX (__NFTA_GEN_MAX - 1) 972 973 #endif /* _LINUX_NF_TABLES_H */ 974