include/uapi/linux/netfilter/nf_tables.h

   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_SET_MAXNAMELEN      32
   7 #define NFT_USERDATA_MAXLEN     256
   8
   9 /**
  10  * enum nft_registers - nf_tables registers
  11  *
  12  * nf_tables used to have five registers: a verdict register and four data
  13  * registers of size 16. The data registers have been changed to 16 registers
  14  * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
  15  * map to areas of size 16, the 4 byte registers are addressed using
  16  * NFT_REG32_00 - NFT_REG32_15.
  17  */
  18 enum nft_registers {
  19         NFT_REG_VERDICT,
  20         NFT_REG_1,
  21         NFT_REG_2,
  22         NFT_REG_3,
  23         NFT_REG_4,
  24         __NFT_REG_MAX,
  25
  26         NFT_REG32_00    = 8,
  27         NFT_REG32_01,
  28         NFT_REG32_02,
  29         NFT_REG32_03,
  30         NFT_REG32_04,
  31         NFT_REG32_05,
  32         NFT_REG32_06,
  33         NFT_REG32_07,
  34         NFT_REG32_08,
  35         NFT_REG32_09,
  36         NFT_REG32_10,
  37         NFT_REG32_11,
  38         NFT_REG32_12,
  39         NFT_REG32_13,
  40         NFT_REG32_14,
  41         NFT_REG32_15,
  42 };
  43 #define NFT_REG_MAX     (__NFT_REG_MAX - 1)
  44
  45 #define NFT_REG_SIZE    16
  46 #define NFT_REG32_SIZE  4
  47
  48 /**
  49  * enum nft_verdicts - nf_tables internal verdicts
  50  *
  51  * @NFT_CONTINUE: continue evaluation of the current rule
  52  * @NFT_BREAK: terminate evaluation of the current rule
  53  * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
  54  * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
  55  * @NFT_RETURN: return to the topmost chain on the jump stack
  56  *
  57  * The nf_tables verdicts share their numeric space with the netfilter verdicts.
  58  */
  59 enum nft_verdicts {
  60         NFT_CONTINUE    = -1,
  61         NFT_BREAK       = -2,
  62         NFT_JUMP        = -3,
  63         NFT_GOTO        = -4,
  64         NFT_RETURN      = -5,
  65 };
  66
  67 /**
  68  * enum nf_tables_msg_types - nf_tables netlink message types
  69  *
  70  * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
  71  * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
  72  * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
  73  * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
  74  * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
  75  * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
  76  * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
  77  * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
  78  * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
  79  * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
  80  * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
  81  * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
  82  * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
  83  * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
  84  * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
  85  * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
  86  * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
  87  * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
  88  */
  89 enum nf_tables_msg_types {
  90         NFT_MSG_NEWTABLE,
  91         NFT_MSG_GETTABLE,
  92         NFT_MSG_DELTABLE,
  93         NFT_MSG_NEWCHAIN,
  94         NFT_MSG_GETCHAIN,
  95         NFT_MSG_DELCHAIN,
  96         NFT_MSG_NEWRULE,
  97         NFT_MSG_GETRULE,
  98         NFT_MSG_DELRULE,
  99         NFT_MSG_NEWSET,
 100         NFT_MSG_GETSET,
 101         NFT_MSG_DELSET,
 102         NFT_MSG_NEWSETELEM,
 103         NFT_MSG_GETSETELEM,
 104         NFT_MSG_DELSETELEM,
 105         NFT_MSG_NEWGEN,
 106         NFT_MSG_GETGEN,
 107         NFT_MSG_TRACE,
 108         NFT_MSG_MAX,
 109 };
 110
 111 /**
 112  * enum nft_list_attributes - nf_tables generic list netlink attributes
 113  *
 114  * @NFTA_LIST_ELEM: list element (NLA_NESTED)
 115  */
 116 enum nft_list_attributes {
 117         NFTA_LIST_UNPEC,
 118         NFTA_LIST_ELEM,
 119         __NFTA_LIST_MAX
 120 };
 121 #define NFTA_LIST_MAX           (__NFTA_LIST_MAX - 1)
 122
 123 /**
 124  * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
 125  *
 126  * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
 127  * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
 128  * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
 129  */
 130 enum nft_hook_attributes {
 131         NFTA_HOOK_UNSPEC,
 132         NFTA_HOOK_HOOKNUM,
 133         NFTA_HOOK_PRIORITY,
 134         NFTA_HOOK_DEV,
 135         __NFTA_HOOK_MAX
 136 };
 137 #define NFTA_HOOK_MAX           (__NFTA_HOOK_MAX - 1)
 138
 139 /**
 140  * enum nft_table_flags - nf_tables table flags
 141  *
 142  * @NFT_TABLE_F_DORMANT: this table is not active
 143  */
 144 enum nft_table_flags {
 145         NFT_TABLE_F_DORMANT     = 0x1,
 146 };
 147
 148 /**
 149  * enum nft_table_attributes - nf_tables table netlink attributes
 150  *
 151  * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
 152  * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
 153  * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
 154  */
 155 enum nft_table_attributes {
 156         NFTA_TABLE_UNSPEC,
 157         NFTA_TABLE_NAME,
 158         NFTA_TABLE_FLAGS,
 159         NFTA_TABLE_USE,
 160         __NFTA_TABLE_MAX
 161 };
 162 #define NFTA_TABLE_MAX          (__NFTA_TABLE_MAX - 1)
 163
 164 /**
 165  * enum nft_chain_attributes - nf_tables chain netlink attributes
 166  *
 167  * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
 168  * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
 169  * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
 170  * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
 171  * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
 172  * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
 173  * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
 174  * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
 175  */
 176 enum nft_chain_attributes {
 177         NFTA_CHAIN_UNSPEC,
 178         NFTA_CHAIN_TABLE,
 179         NFTA_CHAIN_HANDLE,
 180         NFTA_CHAIN_NAME,
 181         NFTA_CHAIN_HOOK,
 182         NFTA_CHAIN_POLICY,
 183         NFTA_CHAIN_USE,
 184         NFTA_CHAIN_TYPE,
 185         NFTA_CHAIN_COUNTERS,
 186         NFTA_CHAIN_PAD,
 187         __NFTA_CHAIN_MAX
 188 };
 189 #define NFTA_CHAIN_MAX          (__NFTA_CHAIN_MAX - 1)
 190
 191 /**
 192  * enum nft_rule_attributes - nf_tables rule netlink attributes
 193  *
 194  * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
 195  * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
 196  * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
 197  * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
 198  * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
 199  * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
 200  * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
 201  */
 202 enum nft_rule_attributes {
 203         NFTA_RULE_UNSPEC,
 204         NFTA_RULE_TABLE,
 205         NFTA_RULE_CHAIN,
 206         NFTA_RULE_HANDLE,
 207         NFTA_RULE_EXPRESSIONS,
 208         NFTA_RULE_COMPAT,
 209         NFTA_RULE_POSITION,
 210         NFTA_RULE_USERDATA,
 211         NFTA_RULE_PAD,
 212         __NFTA_RULE_MAX
 213 };
 214 #define NFTA_RULE_MAX           (__NFTA_RULE_MAX - 1)
 215
 216 /**
 217  * enum nft_rule_compat_flags - nf_tables rule compat flags
 218  *
 219  * @NFT_RULE_COMPAT_F_INV: invert the check result
 220  */
 221 enum nft_rule_compat_flags {
 222         NFT_RULE_COMPAT_F_INV   = (1 << 1),
 223         NFT_RULE_COMPAT_F_MASK  = NFT_RULE_COMPAT_F_INV,
 224 };
 225
 226 /**
 227  * enum nft_rule_compat_attributes - nf_tables rule compat attributes
 228  *
 229  * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
 230  * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
 231  */
 232 enum nft_rule_compat_attributes {
 233         NFTA_RULE_COMPAT_UNSPEC,
 234         NFTA_RULE_COMPAT_PROTO,
 235         NFTA_RULE_COMPAT_FLAGS,
 236         __NFTA_RULE_COMPAT_MAX
 237 };
 238 #define NFTA_RULE_COMPAT_MAX    (__NFTA_RULE_COMPAT_MAX - 1)
 239
 240 /**
 241  * enum nft_set_flags - nf_tables set flags
 242  *
 243  * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
 244  * @NFT_SET_CONSTANT: set contents may not change while bound
 245  * @NFT_SET_INTERVAL: set contains intervals
 246  * @NFT_SET_MAP: set is used as a dictionary
 247  * @NFT_SET_TIMEOUT: set uses timeouts
 248  * @NFT_SET_EVAL: set contains expressions for evaluation
 249  */
 250 enum nft_set_flags {
 251         NFT_SET_ANONYMOUS               = 0x1,
 252         NFT_SET_CONSTANT                = 0x2,
 253         NFT_SET_INTERVAL                = 0x4,
 254         NFT_SET_MAP                     = 0x8,
 255         NFT_SET_TIMEOUT                 = 0x10,
 256         NFT_SET_EVAL                    = 0x20,
 257 };
 258
 259 /**
 260  * enum nft_set_policies - set selection policy
 261  *
 262  * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
 263  * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
 264  */
 265 enum nft_set_policies {
 266         NFT_SET_POL_PERFORMANCE,
 267         NFT_SET_POL_MEMORY,
 268 };
 269
 270 /**
 271  * enum nft_set_desc_attributes - set element description
 272  *
 273  * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
 274  */
 275 enum nft_set_desc_attributes {
 276         NFTA_SET_DESC_UNSPEC,
 277         NFTA_SET_DESC_SIZE,
 278         __NFTA_SET_DESC_MAX
 279 };
 280 #define NFTA_SET_DESC_MAX       (__NFTA_SET_DESC_MAX - 1)
 281
 282 /**
 283  * enum nft_set_attributes - nf_tables set netlink attributes
 284  *
 285  * @NFTA_SET_TABLE: table name (NLA_STRING)
 286  * @NFTA_SET_NAME: set name (NLA_STRING)
 287  * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
 288  * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
 289  * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
 290  * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
 291  * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
 292  * @NFTA_SET_POLICY: selection policy (NLA_U32)
 293  * @NFTA_SET_DESC: set description (NLA_NESTED)
 294  * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 295  * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
 296  * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
 297  * @NFTA_SET_USERDATA: user data (NLA_BINARY)
 298  */
 299 enum nft_set_attributes {
 300         NFTA_SET_UNSPEC,
 301         NFTA_SET_TABLE,
 302         NFTA_SET_NAME,
 303         NFTA_SET_FLAGS,
 304         NFTA_SET_KEY_TYPE,
 305         NFTA_SET_KEY_LEN,
 306         NFTA_SET_DATA_TYPE,
 307         NFTA_SET_DATA_LEN,
 308         NFTA_SET_POLICY,
 309         NFTA_SET_DESC,
 310         NFTA_SET_ID,
 311         NFTA_SET_TIMEOUT,
 312         NFTA_SET_GC_INTERVAL,
 313         NFTA_SET_USERDATA,
 314         NFTA_SET_PAD,
 315         __NFTA_SET_MAX
 316 };
 317 #define NFTA_SET_MAX            (__NFTA_SET_MAX - 1)
 318
 319 /**
 320  * enum nft_set_elem_flags - nf_tables set element flags
 321  *
 322  * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
 323  */
 324 enum nft_set_elem_flags {
 325         NFT_SET_ELEM_INTERVAL_END       = 0x1,
 326 };
 327
 328 /**
 329  * enum nft_set_elem_attributes - nf_tables set element netlink attributes
 330  *
 331  * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
 332  * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
 333  * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
 334  * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
 335  * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
 336  * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
 337  * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 338  */
 339 enum nft_set_elem_attributes {
 340         NFTA_SET_ELEM_UNSPEC,
 341         NFTA_SET_ELEM_KEY,
 342         NFTA_SET_ELEM_DATA,
 343         NFTA_SET_ELEM_FLAGS,
 344         NFTA_SET_ELEM_TIMEOUT,
 345         NFTA_SET_ELEM_EXPIRATION,
 346         NFTA_SET_ELEM_USERDATA,
 347         NFTA_SET_ELEM_EXPR,
 348         NFTA_SET_ELEM_PAD,
 349         __NFTA_SET_ELEM_MAX
 350 };
 351 #define NFTA_SET_ELEM_MAX       (__NFTA_SET_ELEM_MAX - 1)
 352
 353 /**
 354  * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
 355  *
 356  * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
 357  * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
 358  * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
 359  * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 360  */
 361 enum nft_set_elem_list_attributes {
 362         NFTA_SET_ELEM_LIST_UNSPEC,
 363         NFTA_SET_ELEM_LIST_TABLE,
 364         NFTA_SET_ELEM_LIST_SET,
 365         NFTA_SET_ELEM_LIST_ELEMENTS,
 366         NFTA_SET_ELEM_LIST_SET_ID,
 367         __NFTA_SET_ELEM_LIST_MAX
 368 };
 369 #define NFTA_SET_ELEM_LIST_MAX  (__NFTA_SET_ELEM_LIST_MAX - 1)
 370
 371 /**
 372  * enum nft_data_types - nf_tables data types
 373  *
 374  * @NFT_DATA_VALUE: generic data
 375  * @NFT_DATA_VERDICT: netfilter verdict
 376  *
 377  * The type of data is usually determined by the kernel directly and is not
 378  * explicitly specified by userspace. The only difference are sets, where
 379  * userspace specifies the key and mapping data types.
 380  *
 381  * The values 0xffffff00-0xffffffff are reserved for internally used types.
 382  * The remaining range can be freely used by userspace to encode types, all
 383  * values are equivalent to NFT_DATA_VALUE.
 384  */
 385 enum nft_data_types {
 386         NFT_DATA_VALUE,
 387         NFT_DATA_VERDICT        = 0xffffff00U,
 388 };
 389
 390 #define NFT_DATA_RESERVED_MASK  0xffffff00U
 391
 392 /**
 393  * enum nft_data_attributes - nf_tables data netlink attributes
 394  *
 395  * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
 396  * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
 397  */
 398 enum nft_data_attributes {
 399         NFTA_DATA_UNSPEC,
 400         NFTA_DATA_VALUE,
 401         NFTA_DATA_VERDICT,
 402         __NFTA_DATA_MAX
 403 };
 404 #define NFTA_DATA_MAX           (__NFTA_DATA_MAX - 1)
 405
 406 /* Maximum length of a value */
 407 #define NFT_DATA_VALUE_MAXLEN   64
 408
 409 /**
 410  * enum nft_verdict_attributes - nf_tables verdict netlink attributes
 411  *
 412  * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
 413  * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
 414  */
 415 enum nft_verdict_attributes {
 416         NFTA_VERDICT_UNSPEC,
 417         NFTA_VERDICT_CODE,
 418         NFTA_VERDICT_CHAIN,
 419         __NFTA_VERDICT_MAX
 420 };
 421 #define NFTA_VERDICT_MAX        (__NFTA_VERDICT_MAX - 1)
 422
 423 /**
 424  * enum nft_expr_attributes - nf_tables expression netlink attributes
 425  *
 426  * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
 427  * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
 428  */
 429 enum nft_expr_attributes {
 430         NFTA_EXPR_UNSPEC,
 431         NFTA_EXPR_NAME,
 432         NFTA_EXPR_DATA,
 433         __NFTA_EXPR_MAX
 434 };
 435 #define NFTA_EXPR_MAX           (__NFTA_EXPR_MAX - 1)
 436
 437 /**
 438  * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
 439  *
 440  * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
 441  * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
 442  */
 443 enum nft_immediate_attributes {
 444         NFTA_IMMEDIATE_UNSPEC,
 445         NFTA_IMMEDIATE_DREG,
 446         NFTA_IMMEDIATE_DATA,
 447         __NFTA_IMMEDIATE_MAX
 448 };
 449 #define NFTA_IMMEDIATE_MAX      (__NFTA_IMMEDIATE_MAX - 1)
 450
 451 /**
 452  * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
 453  *
 454  * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
 455  * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
 456  * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
 457  * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
 458  * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
 459  *
 460  * The bitwise expression performs the following operation:
 461  *
 462  * dreg = (sreg & mask) ^ xor
 463  *
 464  * which allow to express all bitwise operations:
 465  *
 466  *              mask    xor
 467  * NOT:         1       1
 468  * OR:          0       x
 469  * XOR:         1       x
 470  * AND:         x       0
 471  */
 472 enum nft_bitwise_attributes {
 473         NFTA_BITWISE_UNSPEC,
 474         NFTA_BITWISE_SREG,
 475         NFTA_BITWISE_DREG,
 476         NFTA_BITWISE_LEN,
 477         NFTA_BITWISE_MASK,
 478         NFTA_BITWISE_XOR,
 479         __NFTA_BITWISE_MAX
 480 };
 481 #define NFTA_BITWISE_MAX        (__NFTA_BITWISE_MAX - 1)
 482
 483 /**
 484  * enum nft_byteorder_ops - nf_tables byteorder operators
 485  *
 486  * @NFT_BYTEORDER_NTOH: network to host operator
 487  * @NFT_BYTEORDER_HTON: host to network opertaor
 488  */
 489 enum nft_byteorder_ops {
 490         NFT_BYTEORDER_NTOH,
 491         NFT_BYTEORDER_HTON,
 492 };
 493
 494 /**
 495  * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
 496  *
 497  * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
 498  * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
 499  * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
 500  * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
 501  * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
 502  */
 503 enum nft_byteorder_attributes {
 504         NFTA_BYTEORDER_UNSPEC,
 505         NFTA_BYTEORDER_SREG,
 506         NFTA_BYTEORDER_DREG,
 507         NFTA_BYTEORDER_OP,
 508         NFTA_BYTEORDER_LEN,
 509         NFTA_BYTEORDER_SIZE,
 510         __NFTA_BYTEORDER_MAX
 511 };
 512 #define NFTA_BYTEORDER_MAX      (__NFTA_BYTEORDER_MAX - 1)
 513
 514 /**
 515  * enum nft_cmp_ops - nf_tables relational operator
 516  *
 517  * @NFT_CMP_EQ: equal
 518  * @NFT_CMP_NEQ: not equal
 519  * @NFT_CMP_LT: less than
 520  * @NFT_CMP_LTE: less than or equal to
 521  * @NFT_CMP_GT: greater than
 522  * @NFT_CMP_GTE: greater than or equal to
 523  */
 524 enum nft_cmp_ops {
 525         NFT_CMP_EQ,
 526         NFT_CMP_NEQ,
 527         NFT_CMP_LT,
 528         NFT_CMP_LTE,
 529         NFT_CMP_GT,
 530         NFT_CMP_GTE,
 531 };
 532
 533 /**
 534  * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
 535  *
 536  * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
 537  * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
 538  * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
 539  */
 540 enum nft_cmp_attributes {
 541         NFTA_CMP_UNSPEC,
 542         NFTA_CMP_SREG,
 543         NFTA_CMP_OP,
 544         NFTA_CMP_DATA,
 545         __NFTA_CMP_MAX
 546 };
 547 #define NFTA_CMP_MAX            (__NFTA_CMP_MAX - 1)
 548
 549 /**
 550  * enum nft_range_ops - nf_tables range operator
 551  *
 552  * @NFT_RANGE_EQ: equal
 553  * @NFT_RANGE_NEQ: not equal
 554  */
 555 enum nft_range_ops {
 556         NFT_RANGE_EQ,
 557         NFT_RANGE_NEQ,
 558 };
 559
 560 /**
 561  * enum nft_range_attributes - nf_tables range expression netlink attributes
 562  *
 563  * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
 564  * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
 565  * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
 566  * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
 567  */
 568 enum nft_range_attributes {
 569         NFTA_RANGE_UNSPEC,
 570         NFTA_RANGE_SREG,
 571         NFTA_RANGE_OP,
 572         NFTA_RANGE_FROM_DATA,
 573         NFTA_RANGE_TO_DATA,
 574         __NFTA_RANGE_MAX
 575 };
 576 #define NFTA_RANGE_MAX          (__NFTA_RANGE_MAX - 1)
 577
 578 enum nft_lookup_flags {
 579         NFT_LOOKUP_F_INV = (1 << 0),
 580 };
 581
 582 /**
 583  * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
 584  *
 585  * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
 586  * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
 587  * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
 588  * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 589  * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
 590  */
 591 enum nft_lookup_attributes {
 592         NFTA_LOOKUP_UNSPEC,
 593         NFTA_LOOKUP_SET,
 594         NFTA_LOOKUP_SREG,
 595         NFTA_LOOKUP_DREG,
 596         NFTA_LOOKUP_SET_ID,
 597         NFTA_LOOKUP_FLAGS,
 598         __NFTA_LOOKUP_MAX
 599 };
 600 #define NFTA_LOOKUP_MAX         (__NFTA_LOOKUP_MAX - 1)
 601
 602 enum nft_dynset_ops {
 603         NFT_DYNSET_OP_ADD,
 604         NFT_DYNSET_OP_UPDATE,
 605 };
 606
 607 enum nft_dynset_flags {
 608         NFT_DYNSET_F_INV        = (1 << 0),
 609 };
 610
 611 /**
 612  * enum nft_dynset_attributes - dynset expression attributes
 613  *
 614  * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
 615  * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
 616  * @NFTA_DYNSET_OP: operation (NLA_U32)
 617  * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
 618  * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
 619  * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
 620  * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 621  * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
 622  */
 623 enum nft_dynset_attributes {
 624         NFTA_DYNSET_UNSPEC,
 625         NFTA_DYNSET_SET_NAME,
 626         NFTA_DYNSET_SET_ID,
 627         NFTA_DYNSET_OP,
 628         NFTA_DYNSET_SREG_KEY,
 629         NFTA_DYNSET_SREG_DATA,
 630         NFTA_DYNSET_TIMEOUT,
 631         NFTA_DYNSET_EXPR,
 632         NFTA_DYNSET_PAD,
 633         NFTA_DYNSET_FLAGS,
 634         __NFTA_DYNSET_MAX,
 635 };
 636 #define NFTA_DYNSET_MAX         (__NFTA_DYNSET_MAX - 1)
 637
 638 /**
 639  * enum nft_payload_bases - nf_tables payload expression offset bases
 640  *
 641  * @NFT_PAYLOAD_LL_HEADER: link layer header
 642  * @NFT_PAYLOAD_NETWORK_HEADER: network header
 643  * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
 644  */
 645 enum nft_payload_bases {
 646         NFT_PAYLOAD_LL_HEADER,
 647         NFT_PAYLOAD_NETWORK_HEADER,
 648         NFT_PAYLOAD_TRANSPORT_HEADER,
 649 };
 650
 651 /**
 652  * enum nft_payload_csum_types - nf_tables payload expression checksum types
 653  *
 654  * @NFT_PAYLOAD_CSUM_NONE: no checksumming
 655  * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
 656  */
 657 enum nft_payload_csum_types {
 658         NFT_PAYLOAD_CSUM_NONE,
 659         NFT_PAYLOAD_CSUM_INET,
 660 };
 661
 662 /**
 663  * enum nft_payload_attributes - nf_tables payload expression netlink attributes
 664  *
 665  * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
 666  * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
 667  * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
 668  * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
 669  * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
 670  * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
 671  * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
 672  */
 673 enum nft_payload_attributes {
 674         NFTA_PAYLOAD_UNSPEC,
 675         NFTA_PAYLOAD_DREG,
 676         NFTA_PAYLOAD_BASE,
 677         NFTA_PAYLOAD_OFFSET,
 678         NFTA_PAYLOAD_LEN,
 679         NFTA_PAYLOAD_SREG,
 680         NFTA_PAYLOAD_CSUM_TYPE,
 681         NFTA_PAYLOAD_CSUM_OFFSET,
 682         __NFTA_PAYLOAD_MAX
 683 };
 684 #define NFTA_PAYLOAD_MAX        (__NFTA_PAYLOAD_MAX - 1)
 685
 686 /**
 687  * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
 688  *
 689  * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
 690  * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
 691  * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
 692  * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
 693  */
 694 enum nft_exthdr_attributes {
 695         NFTA_EXTHDR_UNSPEC,
 696         NFTA_EXTHDR_DREG,
 697         NFTA_EXTHDR_TYPE,
 698         NFTA_EXTHDR_OFFSET,
 699         NFTA_EXTHDR_LEN,
 700         __NFTA_EXTHDR_MAX
 701 };
 702 #define NFTA_EXTHDR_MAX         (__NFTA_EXTHDR_MAX - 1)
 703
 704 /**
 705  * enum nft_meta_keys - nf_tables meta expression keys
 706  *
 707  * @NFT_META_LEN: packet length (skb->len)
 708  * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
 709  * @NFT_META_PRIORITY: packet priority (skb->priority)
 710  * @NFT_META_MARK: packet mark (skb->mark)
 711  * @NFT_META_IIF: packet input interface index (dev->ifindex)
 712  * @NFT_META_OIF: packet output interface index (dev->ifindex)
 713  * @NFT_META_IIFNAME: packet input interface name (dev->name)
 714  * @NFT_META_OIFNAME: packet output interface name (dev->name)
 715  * @NFT_META_IIFTYPE: packet input interface type (dev->type)
 716  * @NFT_META_OIFTYPE: packet output interface type (dev->type)
 717  * @NFT_META_SKUID: originating socket UID (fsuid)
 718  * @NFT_META_SKGID: originating socket GID (fsgid)
 719  * @NFT_META_NFTRACE: packet nftrace bit
 720  * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
 721  * @NFT_META_SECMARK: packet secmark (skb->secmark)
 722  * @NFT_META_NFPROTO: netfilter protocol
 723  * @NFT_META_L4PROTO: layer 4 protocol number
 724  * @NFT_META_BRI_IIFNAME: packet input bridge interface name
 725  * @NFT_META_BRI_OIFNAME: packet output bridge interface name
 726  * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
 727  * @NFT_META_CPU: cpu id through smp_processor_id()
 728  * @NFT_META_IIFGROUP: packet input interface group
 729  * @NFT_META_OIFGROUP: packet output interface group
 730  * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
 731  * @NFT_META_PRANDOM: a 32bit pseudo-random number
 732  */
 733 enum nft_meta_keys {
 734         NFT_META_LEN,
 735         NFT_META_PROTOCOL,
 736         NFT_META_PRIORITY,
 737         NFT_META_MARK,
 738         NFT_META_IIF,
 739         NFT_META_OIF,
 740         NFT_META_IIFNAME,
 741         NFT_META_OIFNAME,
 742         NFT_META_IIFTYPE,
 743         NFT_META_OIFTYPE,
 744         NFT_META_SKUID,
 745         NFT_META_SKGID,
 746         NFT_META_NFTRACE,
 747         NFT_META_RTCLASSID,
 748         NFT_META_SECMARK,
 749         NFT_META_NFPROTO,
 750         NFT_META_L4PROTO,
 751         NFT_META_BRI_IIFNAME,
 752         NFT_META_BRI_OIFNAME,
 753         NFT_META_PKTTYPE,
 754         NFT_META_CPU,
 755         NFT_META_IIFGROUP,
 756         NFT_META_OIFGROUP,
 757         NFT_META_CGROUP,
 758         NFT_META_PRANDOM,
 759 };
 760
 761 /**
 762  * enum nft_rt_keys - nf_tables routing expression keys
 763  *
 764  * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
 765  * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
 766  * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
 767  */
 768 enum nft_rt_keys {
 769         NFT_RT_CLASSID,
 770         NFT_RT_NEXTHOP4,
 771         NFT_RT_NEXTHOP6,
 772 };
 773
 774 /**
 775  * enum nft_hash_attributes - nf_tables hash expression netlink attributes
 776  *
 777  * @NFTA_HASH_SREG: source register (NLA_U32)
 778  * @NFTA_HASH_DREG: destination register (NLA_U32)
 779  * @NFTA_HASH_LEN: source data length (NLA_U32)
 780  * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
 781  * @NFTA_HASH_SEED: seed value (NLA_U32)
 782  * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
 783  */
 784 enum nft_hash_attributes {
 785         NFTA_HASH_UNSPEC,
 786         NFTA_HASH_SREG,
 787         NFTA_HASH_DREG,
 788         NFTA_HASH_LEN,
 789         NFTA_HASH_MODULUS,
 790         NFTA_HASH_SEED,
 791         NFTA_HASH_OFFSET,
 792         __NFTA_HASH_MAX,
 793 };
 794 #define NFTA_HASH_MAX   (__NFTA_HASH_MAX - 1)
 795
 796 /**
 797  * enum nft_meta_attributes - nf_tables meta expression netlink attributes
 798  *
 799  * @NFTA_META_DREG: destination register (NLA_U32)
 800  * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
 801  * @NFTA_META_SREG: source register (NLA_U32)
 802  */
 803 enum nft_meta_attributes {
 804         NFTA_META_UNSPEC,
 805         NFTA_META_DREG,
 806         NFTA_META_KEY,
 807         NFTA_META_SREG,
 808         __NFTA_META_MAX
 809 };
 810 #define NFTA_META_MAX           (__NFTA_META_MAX - 1)
 811
 812 /**
 813  * enum nft_rt_attributes - nf_tables routing expression netlink attributes
 814  *
 815  * @NFTA_RT_DREG: destination register (NLA_U32)
 816  * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
 817  */
 818 enum nft_rt_attributes {
 819         NFTA_RT_UNSPEC,
 820         NFTA_RT_DREG,
 821         NFTA_RT_KEY,
 822         __NFTA_RT_MAX
 823 };
 824 #define NFTA_RT_MAX             (__NFTA_RT_MAX - 1)
 825
 826 /**
 827  * enum nft_ct_keys - nf_tables ct expression keys
 828  *
 829  * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
 830  * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
 831  * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
 832  * @NFT_CT_MARK: conntrack mark value
 833  * @NFT_CT_SECMARK: conntrack secmark value
 834  * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
 835  * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
 836  * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
 837  * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
 838  * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
 839  * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
 840  * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
 841  * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
 842  */
 843 enum nft_ct_keys {
 844         NFT_CT_STATE,
 845         NFT_CT_DIRECTION,
 846         NFT_CT_STATUS,
 847         NFT_CT_MARK,
 848         NFT_CT_SECMARK,
 849         NFT_CT_EXPIRATION,
 850         NFT_CT_HELPER,
 851         NFT_CT_L3PROTOCOL,
 852         NFT_CT_SRC,
 853         NFT_CT_DST,
 854         NFT_CT_PROTOCOL,
 855         NFT_CT_PROTO_SRC,
 856         NFT_CT_PROTO_DST,
 857         NFT_CT_LABELS,
 858         NFT_CT_PKTS,
 859         NFT_CT_BYTES,
 860 };
 861
 862 /**
 863  * enum nft_ct_attributes - nf_tables ct expression netlink attributes
 864  *
 865  * @NFTA_CT_DREG: destination register (NLA_U32)
 866  * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
 867  * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
 868  * @NFTA_CT_SREG: source register (NLA_U32)
 869  */
 870 enum nft_ct_attributes {
 871         NFTA_CT_UNSPEC,
 872         NFTA_CT_DREG,
 873         NFTA_CT_KEY,
 874         NFTA_CT_DIRECTION,
 875         NFTA_CT_SREG,
 876         __NFTA_CT_MAX
 877 };
 878 #define NFTA_CT_MAX             (__NFTA_CT_MAX - 1)
 879
 880 enum nft_limit_type {
 881         NFT_LIMIT_PKTS,
 882         NFT_LIMIT_PKT_BYTES
 883 };
 884
 885 enum nft_limit_flags {
 886         NFT_LIMIT_F_INV = (1 << 0),
 887 };
 888
 889 /**
 890  * enum nft_limit_attributes - nf_tables limit expression netlink attributes
 891  *
 892  * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
 893  * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
 894  * @NFTA_LIMIT_BURST: burst (NLA_U32)
 895  * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
 896  * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
 897  */
 898 enum nft_limit_attributes {
 899         NFTA_LIMIT_UNSPEC,
 900         NFTA_LIMIT_RATE,
 901         NFTA_LIMIT_UNIT,
 902         NFTA_LIMIT_BURST,
 903         NFTA_LIMIT_TYPE,
 904         NFTA_LIMIT_FLAGS,
 905         NFTA_LIMIT_PAD,
 906         __NFTA_LIMIT_MAX
 907 };
 908 #define NFTA_LIMIT_MAX          (__NFTA_LIMIT_MAX - 1)
 909
 910 /**
 911  * enum nft_counter_attributes - nf_tables counter expression netlink attributes
 912  *
 913  * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
 914  * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
 915  */
 916 enum nft_counter_attributes {
 917         NFTA_COUNTER_UNSPEC,
 918         NFTA_COUNTER_BYTES,
 919         NFTA_COUNTER_PACKETS,
 920         NFTA_COUNTER_PAD,
 921         __NFTA_COUNTER_MAX
 922 };
 923 #define NFTA_COUNTER_MAX        (__NFTA_COUNTER_MAX - 1)
 924
 925 /**
 926  * enum nft_log_attributes - nf_tables log expression netlink attributes
 927  *
 928  * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
 929  * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
 930  * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
 931  * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
 932  * @NFTA_LOG_LEVEL: log level (NLA_U32)
 933  * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
 934  */
 935 enum nft_log_attributes {
 936         NFTA_LOG_UNSPEC,
 937         NFTA_LOG_GROUP,
 938         NFTA_LOG_PREFIX,
 939         NFTA_LOG_SNAPLEN,
 940         NFTA_LOG_QTHRESHOLD,
 941         NFTA_LOG_LEVEL,
 942         NFTA_LOG_FLAGS,
 943         __NFTA_LOG_MAX
 944 };
 945 #define NFTA_LOG_MAX            (__NFTA_LOG_MAX - 1)
 946
 947 /**
 948  * enum nft_queue_attributes - nf_tables queue expression netlink attributes
 949  *
 950  * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
 951  * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
 952  * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
 953  * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
 954  */
 955 enum nft_queue_attributes {
 956         NFTA_QUEUE_UNSPEC,
 957         NFTA_QUEUE_NUM,
 958         NFTA_QUEUE_TOTAL,
 959         NFTA_QUEUE_FLAGS,
 960         NFTA_QUEUE_SREG_QNUM,
 961         __NFTA_QUEUE_MAX
 962 };
 963 #define NFTA_QUEUE_MAX          (__NFTA_QUEUE_MAX - 1)
 964
 965 #define NFT_QUEUE_FLAG_BYPASS           0x01 /* for compatibility with v2 */
 966 #define NFT_QUEUE_FLAG_CPU_FANOUT       0x02 /* use current CPU (no hashing) */
 967 #define NFT_QUEUE_FLAG_MASK             0x03
 968
 969 enum nft_quota_flags {
 970         NFT_QUOTA_F_INV         = (1 << 0),
 971 };
 972
 973 /**
 974  * enum nft_quota_attributes - nf_tables quota expression netlink attributes
 975  *
 976  * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
 977  * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
 978  */
 979 enum nft_quota_attributes {
 980         NFTA_QUOTA_UNSPEC,
 981         NFTA_QUOTA_BYTES,
 982         NFTA_QUOTA_FLAGS,
 983         NFTA_QUOTA_PAD,
 984         __NFTA_QUOTA_MAX
 985 };
 986 #define NFTA_QUOTA_MAX          (__NFTA_QUOTA_MAX - 1)
 987
 988 /**
 989  * enum nft_reject_types - nf_tables reject expression reject types
 990  *
 991  * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
 992  * @NFT_REJECT_TCP_RST: reject using TCP RST
 993  * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
 994  */
 995 enum nft_reject_types {
 996         NFT_REJECT_ICMP_UNREACH,
 997         NFT_REJECT_TCP_RST,
 998         NFT_REJECT_ICMPX_UNREACH,
 999 };
1000
1001 /**
1002  * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1003  *
1004  * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1005  * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1006  * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1007  * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1008  *
1009  * These codes are mapped to real ICMP and ICMPv6 codes.
1010  */
1011 enum nft_reject_inet_code {
1012         NFT_REJECT_ICMPX_NO_ROUTE       = 0,
1013         NFT_REJECT_ICMPX_PORT_UNREACH,
1014         NFT_REJECT_ICMPX_HOST_UNREACH,
1015         NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
1016         __NFT_REJECT_ICMPX_MAX
1017 };
1018 #define NFT_REJECT_ICMPX_MAX    (__NFT_REJECT_ICMPX_MAX - 1)
1019
1020 /**
1021  * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1022  *
1023  * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1024  * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1025  */
1026 enum nft_reject_attributes {
1027         NFTA_REJECT_UNSPEC,
1028         NFTA_REJECT_TYPE,
1029         NFTA_REJECT_ICMP_CODE,
1030         __NFTA_REJECT_MAX
1031 };
1032 #define NFTA_REJECT_MAX         (__NFTA_REJECT_MAX - 1)
1033
1034 /**
1035  * enum nft_nat_types - nf_tables nat expression NAT types
1036  *
1037  * @NFT_NAT_SNAT: source NAT
1038  * @NFT_NAT_DNAT: destination NAT
1039  */
1040 enum nft_nat_types {
1041         NFT_NAT_SNAT,
1042         NFT_NAT_DNAT,
1043 };
1044
1045 /**
1046  * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1047  *
1048  * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1049  * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1050  * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1051  * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1052  * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1053  * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1054  * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1055  */
1056 enum nft_nat_attributes {
1057         NFTA_NAT_UNSPEC,
1058         NFTA_NAT_TYPE,
1059         NFTA_NAT_FAMILY,
1060         NFTA_NAT_REG_ADDR_MIN,
1061         NFTA_NAT_REG_ADDR_MAX,
1062         NFTA_NAT_REG_PROTO_MIN,
1063         NFTA_NAT_REG_PROTO_MAX,
1064         NFTA_NAT_FLAGS,
1065         __NFTA_NAT_MAX
1066 };
1067 #define NFTA_NAT_MAX            (__NFTA_NAT_MAX - 1)
1068
1069 /**
1070  * enum nft_masq_attributes - nf_tables masquerade expression attributes
1071  *
1072  * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1073  * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1074  * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1075  */
1076 enum nft_masq_attributes {
1077         NFTA_MASQ_UNSPEC,
1078         NFTA_MASQ_FLAGS,
1079         NFTA_MASQ_REG_PROTO_MIN,
1080         NFTA_MASQ_REG_PROTO_MAX,
1081         __NFTA_MASQ_MAX
1082 };
1083 #define NFTA_MASQ_MAX           (__NFTA_MASQ_MAX - 1)
1084
1085 /**
1086  * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1087  *
1088  * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1089  * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1090  * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1091  */
1092 enum nft_redir_attributes {
1093         NFTA_REDIR_UNSPEC,
1094         NFTA_REDIR_REG_PROTO_MIN,
1095         NFTA_REDIR_REG_PROTO_MAX,
1096         NFTA_REDIR_FLAGS,
1097         __NFTA_REDIR_MAX
1098 };
1099 #define NFTA_REDIR_MAX          (__NFTA_REDIR_MAX - 1)
1100
1101 /**
1102  * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1103  *
1104  * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1105  * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1106  */
1107 enum nft_dup_attributes {
1108         NFTA_DUP_UNSPEC,
1109         NFTA_DUP_SREG_ADDR,
1110         NFTA_DUP_SREG_DEV,
1111         __NFTA_DUP_MAX
1112 };
1113 #define NFTA_DUP_MAX            (__NFTA_DUP_MAX - 1)
1114
1115 /**
1116  * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1117  *
1118  * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1119  */
1120 enum nft_fwd_attributes {
1121         NFTA_FWD_UNSPEC,
1122         NFTA_FWD_SREG_DEV,
1123         __NFTA_FWD_MAX
1124 };
1125 #define NFTA_FWD_MAX    (__NFTA_FWD_MAX - 1)
1126
1127 /**
1128  * enum nft_gen_attributes - nf_tables ruleset generation attributes
1129  *
1130  * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1131  */
1132 enum nft_gen_attributes {
1133         NFTA_GEN_UNSPEC,
1134         NFTA_GEN_ID,
1135         __NFTA_GEN_MAX
1136 };
1137 #define NFTA_GEN_MAX            (__NFTA_GEN_MAX - 1)
1138
1139 /*
1140  * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1141  *
1142  * @NFTA_FIB_DREG: destination register (NLA_U32)
1143  * @NFTA_FIB_RESULT: desired result (NLA_U32)
1144  * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1145  *
1146  * The FIB expression performs a route lookup according
1147  * to the packet data.
1148  */
1149 enum nft_fib_attributes {
1150         NFTA_FIB_UNSPEC,
1151         NFTA_FIB_DREG,
1152         NFTA_FIB_RESULT,
1153         NFTA_FIB_FLAGS,
1154         __NFTA_FIB_MAX
1155 };
1156 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1157
1158 enum nft_fib_result {
1159         NFT_FIB_RESULT_UNSPEC,
1160         NFT_FIB_RESULT_OIF,
1161         NFT_FIB_RESULT_OIFNAME,
1162         NFT_FIB_RESULT_ADDRTYPE,
1163         __NFT_FIB_RESULT_MAX
1164 };
1165 #define NFT_FIB_RESULT_MAX      (__NFT_FIB_RESULT_MAX - 1)
1166
1167 enum nft_fib_flags {
1168         NFTA_FIB_F_SADDR        = 1 << 0,       /* look up src */
1169         NFTA_FIB_F_DADDR        = 1 << 1,       /* look up dst */
1170         NFTA_FIB_F_MARK         = 1 << 2,       /* use skb->mark */
1171         NFTA_FIB_F_IIF          = 1 << 3,       /* restrict to iif */
1172         NFTA_FIB_F_OIF          = 1 << 4,       /* restrict to oif */
1173 };
1174
1175 /**
1176  * enum nft_trace_attributes - nf_tables trace netlink attributes
1177  *
1178  * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1179  * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1180  * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1181  * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1182  * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1183  * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1184  * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1185  * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1186  * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1187  * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1188  * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1189  * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1190  * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1191  * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1192  * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1193  * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1194  */
1195 enum nft_trace_attributes {
1196         NFTA_TRACE_UNSPEC,
1197         NFTA_TRACE_TABLE,
1198         NFTA_TRACE_CHAIN,
1199         NFTA_TRACE_RULE_HANDLE,
1200         NFTA_TRACE_TYPE,
1201         NFTA_TRACE_VERDICT,
1202         NFTA_TRACE_ID,
1203         NFTA_TRACE_LL_HEADER,
1204         NFTA_TRACE_NETWORK_HEADER,
1205         NFTA_TRACE_TRANSPORT_HEADER,
1206         NFTA_TRACE_IIF,
1207         NFTA_TRACE_IIFTYPE,
1208         NFTA_TRACE_OIF,
1209         NFTA_TRACE_OIFTYPE,
1210         NFTA_TRACE_MARK,
1211         NFTA_TRACE_NFPROTO,
1212         NFTA_TRACE_POLICY,
1213         NFTA_TRACE_PAD,
1214         __NFTA_TRACE_MAX
1215 };
1216 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1217
1218 enum nft_trace_types {
1219         NFT_TRACETYPE_UNSPEC,
1220         NFT_TRACETYPE_POLICY,
1221         NFT_TRACETYPE_RETURN,
1222         NFT_TRACETYPE_RULE,
1223         __NFT_TRACETYPE_MAX
1224 };
1225 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1226
1227 /**
1228  * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1229  *
1230  * @NFTA_NG_DREG: destination register (NLA_U32)
1231  * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1232  * @NFTA_NG_TYPE: operation type (NLA_U32)
1233  * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1234  */
1235 enum nft_ng_attributes {
1236         NFTA_NG_UNSPEC,
1237         NFTA_NG_DREG,
1238         NFTA_NG_MODULUS,
1239         NFTA_NG_TYPE,
1240         NFTA_NG_OFFSET,
1241         __NFTA_NG_MAX
1242 };
1243 #define NFTA_NG_MAX     (__NFTA_NG_MAX - 1)
1244
1245 enum nft_ng_types {
1246         NFT_NG_INCREMENTAL,
1247         NFT_NG_RANDOM,
1248         __NFT_NG_MAX
1249 };
1250 #define NFT_NG_MAX      (__NFT_NG_MAX - 1)
1251
1252 #endif /* _LINUX_NF_TABLES_H */