include/uapi/linux/netfilter/nf_tables.h

   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  * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
  55  * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
  56  */
  57 enum nf_tables_msg_types {
  58         NFT_MSG_NEWTABLE,
  59         NFT_MSG_GETTABLE,
  60         NFT_MSG_DELTABLE,
  61         NFT_MSG_NEWCHAIN,
  62         NFT_MSG_GETCHAIN,
  63         NFT_MSG_DELCHAIN,
  64         NFT_MSG_NEWRULE,
  65         NFT_MSG_GETRULE,
  66         NFT_MSG_DELRULE,
  67         NFT_MSG_NEWSET,
  68         NFT_MSG_GETSET,
  69         NFT_MSG_DELSET,
  70         NFT_MSG_NEWSETELEM,
  71         NFT_MSG_GETSETELEM,
  72         NFT_MSG_DELSETELEM,
  73         NFT_MSG_NEWGEN,
  74         NFT_MSG_GETGEN,
  75         NFT_MSG_MAX,
  76 };
  77
  78 /**
  79  * enum nft_list_attributes - nf_tables generic list netlink attributes
  80  *
  81  * @NFTA_LIST_ELEM: list element (NLA_NESTED)
  82  */
  83 enum nft_list_attributes {
  84         NFTA_LIST_UNPEC,
  85         NFTA_LIST_ELEM,
  86         __NFTA_LIST_MAX
  87 };
  88 #define NFTA_LIST_MAX           (__NFTA_LIST_MAX - 1)
  89
  90 /**
  91  * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
  92  *
  93  * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
  94  * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
  95  */
  96 enum nft_hook_attributes {
  97         NFTA_HOOK_UNSPEC,
  98         NFTA_HOOK_HOOKNUM,
  99         NFTA_HOOK_PRIORITY,
 100         __NFTA_HOOK_MAX
 101 };
 102 #define NFTA_HOOK_MAX           (__NFTA_HOOK_MAX - 1)
 103
 104 /**
 105  * enum nft_table_flags - nf_tables table flags
 106  *
 107  * @NFT_TABLE_F_DORMANT: this table is not active
 108  */
 109 enum nft_table_flags {
 110         NFT_TABLE_F_DORMANT     = 0x1,
 111 };
 112
 113 /**
 114  * enum nft_table_attributes - nf_tables table netlink attributes
 115  *
 116  * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
 117  * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
 118  * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
 119  */
 120 enum nft_table_attributes {
 121         NFTA_TABLE_UNSPEC,
 122         NFTA_TABLE_NAME,
 123         NFTA_TABLE_FLAGS,
 124         NFTA_TABLE_USE,
 125         __NFTA_TABLE_MAX
 126 };
 127 #define NFTA_TABLE_MAX          (__NFTA_TABLE_MAX - 1)
 128
 129 /**
 130  * enum nft_chain_attributes - nf_tables chain netlink attributes
 131  *
 132  * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
 133  * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
 134  * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
 135  * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
 136  * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
 137  * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
 138  * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
 139  * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
 140  */
 141 enum nft_chain_attributes {
 142         NFTA_CHAIN_UNSPEC,
 143         NFTA_CHAIN_TABLE,
 144         NFTA_CHAIN_HANDLE,
 145         NFTA_CHAIN_NAME,
 146         NFTA_CHAIN_HOOK,
 147         NFTA_CHAIN_POLICY,
 148         NFTA_CHAIN_USE,
 149         NFTA_CHAIN_TYPE,
 150         NFTA_CHAIN_COUNTERS,
 151         __NFTA_CHAIN_MAX
 152 };
 153 #define NFTA_CHAIN_MAX          (__NFTA_CHAIN_MAX - 1)
 154
 155 /**
 156  * enum nft_rule_attributes - nf_tables rule netlink attributes
 157  *
 158  * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
 159  * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
 160  * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
 161  * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
 162  * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
 163  * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
 164  * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
 165  */
 166 enum nft_rule_attributes {
 167         NFTA_RULE_UNSPEC,
 168         NFTA_RULE_TABLE,
 169         NFTA_RULE_CHAIN,
 170         NFTA_RULE_HANDLE,
 171         NFTA_RULE_EXPRESSIONS,
 172         NFTA_RULE_COMPAT,
 173         NFTA_RULE_POSITION,
 174         NFTA_RULE_USERDATA,
 175         __NFTA_RULE_MAX
 176 };
 177 #define NFTA_RULE_MAX           (__NFTA_RULE_MAX - 1)
 178
 179 /**
 180  * enum nft_rule_compat_flags - nf_tables rule compat flags
 181  *
 182  * @NFT_RULE_COMPAT_F_INV: invert the check result
 183  */
 184 enum nft_rule_compat_flags {
 185         NFT_RULE_COMPAT_F_INV   = (1 << 1),
 186         NFT_RULE_COMPAT_F_MASK  = NFT_RULE_COMPAT_F_INV,
 187 };
 188
 189 /**
 190  * enum nft_rule_compat_attributes - nf_tables rule compat attributes
 191  *
 192  * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
 193  * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
 194  */
 195 enum nft_rule_compat_attributes {
 196         NFTA_RULE_COMPAT_UNSPEC,
 197         NFTA_RULE_COMPAT_PROTO,
 198         NFTA_RULE_COMPAT_FLAGS,
 199         __NFTA_RULE_COMPAT_MAX
 200 };
 201 #define NFTA_RULE_COMPAT_MAX    (__NFTA_RULE_COMPAT_MAX - 1)
 202
 203 /**
 204  * enum nft_set_flags - nf_tables set flags
 205  *
 206  * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
 207  * @NFT_SET_CONSTANT: set contents may not change while bound
 208  * @NFT_SET_INTERVAL: set contains intervals
 209  * @NFT_SET_MAP: set is used as a dictionary
 210  */
 211 enum nft_set_flags {
 212         NFT_SET_ANONYMOUS               = 0x1,
 213         NFT_SET_CONSTANT                = 0x2,
 214         NFT_SET_INTERVAL                = 0x4,
 215         NFT_SET_MAP                     = 0x8,
 216 };
 217
 218 /**
 219  * enum nft_set_policies - set selection policy
 220  *
 221  * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
 222  * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
 223  */
 224 enum nft_set_policies {
 225         NFT_SET_POL_PERFORMANCE,
 226         NFT_SET_POL_MEMORY,
 227 };
 228
 229 /**
 230  * enum nft_set_desc_attributes - set element description
 231  *
 232  * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
 233  */
 234 enum nft_set_desc_attributes {
 235         NFTA_SET_DESC_UNSPEC,
 236         NFTA_SET_DESC_SIZE,
 237         __NFTA_SET_DESC_MAX
 238 };
 239 #define NFTA_SET_DESC_MAX       (__NFTA_SET_DESC_MAX - 1)
 240
 241 /**
 242  * enum nft_set_attributes - nf_tables set netlink attributes
 243  *
 244  * @NFTA_SET_TABLE: table name (NLA_STRING)
 245  * @NFTA_SET_NAME: set name (NLA_STRING)
 246  * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
 247  * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
 248  * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
 249  * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
 250  * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
 251  * @NFTA_SET_POLICY: selection policy (NLA_U32)
 252  * @NFTA_SET_DESC: set description (NLA_NESTED)
 253  * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 254  */
 255 enum nft_set_attributes {
 256         NFTA_SET_UNSPEC,
 257         NFTA_SET_TABLE,
 258         NFTA_SET_NAME,
 259         NFTA_SET_FLAGS,
 260         NFTA_SET_KEY_TYPE,
 261         NFTA_SET_KEY_LEN,
 262         NFTA_SET_DATA_TYPE,
 263         NFTA_SET_DATA_LEN,
 264         NFTA_SET_POLICY,
 265         NFTA_SET_DESC,
 266         NFTA_SET_ID,
 267         __NFTA_SET_MAX
 268 };
 269 #define NFTA_SET_MAX            (__NFTA_SET_MAX - 1)
 270
 271 /**
 272  * enum nft_set_elem_flags - nf_tables set element flags
 273  *
 274  * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
 275  */
 276 enum nft_set_elem_flags {
 277         NFT_SET_ELEM_INTERVAL_END       = 0x1,
 278 };
 279
 280 /**
 281  * enum nft_set_elem_attributes - nf_tables set element netlink attributes
 282  *
 283  * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
 284  * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
 285  * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
 286  */
 287 enum nft_set_elem_attributes {
 288         NFTA_SET_ELEM_UNSPEC,
 289         NFTA_SET_ELEM_KEY,
 290         NFTA_SET_ELEM_DATA,
 291         NFTA_SET_ELEM_FLAGS,
 292         __NFTA_SET_ELEM_MAX
 293 };
 294 #define NFTA_SET_ELEM_MAX       (__NFTA_SET_ELEM_MAX - 1)
 295
 296 /**
 297  * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
 298  *
 299  * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
 300  * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
 301  * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
 302  * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 303  */
 304 enum nft_set_elem_list_attributes {
 305         NFTA_SET_ELEM_LIST_UNSPEC,
 306         NFTA_SET_ELEM_LIST_TABLE,
 307         NFTA_SET_ELEM_LIST_SET,
 308         NFTA_SET_ELEM_LIST_ELEMENTS,
 309         NFTA_SET_ELEM_LIST_SET_ID,
 310         __NFTA_SET_ELEM_LIST_MAX
 311 };
 312 #define NFTA_SET_ELEM_LIST_MAX  (__NFTA_SET_ELEM_LIST_MAX - 1)
 313
 314 /**
 315  * enum nft_data_types - nf_tables data types
 316  *
 317  * @NFT_DATA_VALUE: generic data
 318  * @NFT_DATA_VERDICT: netfilter verdict
 319  *
 320  * The type of data is usually determined by the kernel directly and is not
 321  * explicitly specified by userspace. The only difference are sets, where
 322  * userspace specifies the key and mapping data types.
 323  *
 324  * The values 0xffffff00-0xffffffff are reserved for internally used types.
 325  * The remaining range can be freely used by userspace to encode types, all
 326  * values are equivalent to NFT_DATA_VALUE.
 327  */
 328 enum nft_data_types {
 329         NFT_DATA_VALUE,
 330         NFT_DATA_VERDICT        = 0xffffff00U,
 331 };
 332
 333 #define NFT_DATA_RESERVED_MASK  0xffffff00U
 334
 335 /**
 336  * enum nft_data_attributes - nf_tables data netlink attributes
 337  *
 338  * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
 339  * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
 340  */
 341 enum nft_data_attributes {
 342         NFTA_DATA_UNSPEC,
 343         NFTA_DATA_VALUE,
 344         NFTA_DATA_VERDICT,
 345         __NFTA_DATA_MAX
 346 };
 347 #define NFTA_DATA_MAX           (__NFTA_DATA_MAX - 1)
 348
 349 /**
 350  * enum nft_verdict_attributes - nf_tables verdict netlink attributes
 351  *
 352  * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
 353  * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
 354  */
 355 enum nft_verdict_attributes {
 356         NFTA_VERDICT_UNSPEC,
 357         NFTA_VERDICT_CODE,
 358         NFTA_VERDICT_CHAIN,
 359         __NFTA_VERDICT_MAX
 360 };
 361 #define NFTA_VERDICT_MAX        (__NFTA_VERDICT_MAX - 1)
 362
 363 /**
 364  * enum nft_expr_attributes - nf_tables expression netlink attributes
 365  *
 366  * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
 367  * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
 368  */
 369 enum nft_expr_attributes {
 370         NFTA_EXPR_UNSPEC,
 371         NFTA_EXPR_NAME,
 372         NFTA_EXPR_DATA,
 373         __NFTA_EXPR_MAX
 374 };
 375 #define NFTA_EXPR_MAX           (__NFTA_EXPR_MAX - 1)
 376
 377 /**
 378  * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
 379  *
 380  * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
 381  * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
 382  */
 383 enum nft_immediate_attributes {
 384         NFTA_IMMEDIATE_UNSPEC,
 385         NFTA_IMMEDIATE_DREG,
 386         NFTA_IMMEDIATE_DATA,
 387         __NFTA_IMMEDIATE_MAX
 388 };
 389 #define NFTA_IMMEDIATE_MAX      (__NFTA_IMMEDIATE_MAX - 1)
 390
 391 /**
 392  * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
 393  *
 394  * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
 395  * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
 396  * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
 397  * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
 398  * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
 399  *
 400  * The bitwise expression performs the following operation:
 401  *
 402  * dreg = (sreg & mask) ^ xor
 403  *
 404  * which allow to express all bitwise operations:
 405  *
 406  *              mask    xor
 407  * NOT:         1       1
 408  * OR:          0       x
 409  * XOR:         1       x
 410  * AND:         x       0
 411  */
 412 enum nft_bitwise_attributes {
 413         NFTA_BITWISE_UNSPEC,
 414         NFTA_BITWISE_SREG,
 415         NFTA_BITWISE_DREG,
 416         NFTA_BITWISE_LEN,
 417         NFTA_BITWISE_MASK,
 418         NFTA_BITWISE_XOR,
 419         __NFTA_BITWISE_MAX
 420 };
 421 #define NFTA_BITWISE_MAX        (__NFTA_BITWISE_MAX - 1)
 422
 423 /**
 424  * enum nft_byteorder_ops - nf_tables byteorder operators
 425  *
 426  * @NFT_BYTEORDER_NTOH: network to host operator
 427  * @NFT_BYTEORDER_HTON: host to network opertaor
 428  */
 429 enum nft_byteorder_ops {
 430         NFT_BYTEORDER_NTOH,
 431         NFT_BYTEORDER_HTON,
 432 };
 433
 434 /**
 435  * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
 436  *
 437  * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
 438  * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
 439  * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
 440  * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
 441  * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
 442  */
 443 enum nft_byteorder_attributes {
 444         NFTA_BYTEORDER_UNSPEC,
 445         NFTA_BYTEORDER_SREG,
 446         NFTA_BYTEORDER_DREG,
 447         NFTA_BYTEORDER_OP,
 448         NFTA_BYTEORDER_LEN,
 449         NFTA_BYTEORDER_SIZE,
 450         __NFTA_BYTEORDER_MAX
 451 };
 452 #define NFTA_BYTEORDER_MAX      (__NFTA_BYTEORDER_MAX - 1)
 453
 454 /**
 455  * enum nft_cmp_ops - nf_tables relational operator
 456  *
 457  * @NFT_CMP_EQ: equal
 458  * @NFT_CMP_NEQ: not equal
 459  * @NFT_CMP_LT: less than
 460  * @NFT_CMP_LTE: less than or equal to
 461  * @NFT_CMP_GT: greater than
 462  * @NFT_CMP_GTE: greater than or equal to
 463  */
 464 enum nft_cmp_ops {
 465         NFT_CMP_EQ,
 466         NFT_CMP_NEQ,
 467         NFT_CMP_LT,
 468         NFT_CMP_LTE,
 469         NFT_CMP_GT,
 470         NFT_CMP_GTE,
 471 };
 472
 473 /**
 474  * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
 475  *
 476  * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
 477  * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
 478  * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
 479  */
 480 enum nft_cmp_attributes {
 481         NFTA_CMP_UNSPEC,
 482         NFTA_CMP_SREG,
 483         NFTA_CMP_OP,
 484         NFTA_CMP_DATA,
 485         __NFTA_CMP_MAX
 486 };
 487 #define NFTA_CMP_MAX            (__NFTA_CMP_MAX - 1)
 488
 489 /**
 490  * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
 491  *
 492  * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
 493  * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
 494  * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
 495  * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 496  */
 497 enum nft_lookup_attributes {
 498         NFTA_LOOKUP_UNSPEC,
 499         NFTA_LOOKUP_SET,
 500         NFTA_LOOKUP_SREG,
 501         NFTA_LOOKUP_DREG,
 502         NFTA_LOOKUP_SET_ID,
 503         __NFTA_LOOKUP_MAX
 504 };
 505 #define NFTA_LOOKUP_MAX         (__NFTA_LOOKUP_MAX - 1)
 506
 507 /**
 508  * enum nft_payload_bases - nf_tables payload expression offset bases
 509  *
 510  * @NFT_PAYLOAD_LL_HEADER: link layer header
 511  * @NFT_PAYLOAD_NETWORK_HEADER: network header
 512  * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
 513  */
 514 enum nft_payload_bases {
 515         NFT_PAYLOAD_LL_HEADER,
 516         NFT_PAYLOAD_NETWORK_HEADER,
 517         NFT_PAYLOAD_TRANSPORT_HEADER,
 518 };
 519
 520 /**
 521  * enum nft_payload_attributes - nf_tables payload expression netlink attributes
 522  *
 523  * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
 524  * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
 525  * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
 526  * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
 527  */
 528 enum nft_payload_attributes {
 529         NFTA_PAYLOAD_UNSPEC,
 530         NFTA_PAYLOAD_DREG,
 531         NFTA_PAYLOAD_BASE,
 532         NFTA_PAYLOAD_OFFSET,
 533         NFTA_PAYLOAD_LEN,
 534         __NFTA_PAYLOAD_MAX
 535 };
 536 #define NFTA_PAYLOAD_MAX        (__NFTA_PAYLOAD_MAX - 1)
 537
 538 /**
 539  * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
 540  *
 541  * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
 542  * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
 543  * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
 544  * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
 545  */
 546 enum nft_exthdr_attributes {
 547         NFTA_EXTHDR_UNSPEC,
 548         NFTA_EXTHDR_DREG,
 549         NFTA_EXTHDR_TYPE,
 550         NFTA_EXTHDR_OFFSET,
 551         NFTA_EXTHDR_LEN,
 552         __NFTA_EXTHDR_MAX
 553 };
 554 #define NFTA_EXTHDR_MAX         (__NFTA_EXTHDR_MAX - 1)
 555
 556 /**
 557  * enum nft_meta_keys - nf_tables meta expression keys
 558  *
 559  * @NFT_META_LEN: packet length (skb->len)
 560  * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
 561  * @NFT_META_PRIORITY: packet priority (skb->priority)
 562  * @NFT_META_MARK: packet mark (skb->mark)
 563  * @NFT_META_IIF: packet input interface index (dev->ifindex)
 564  * @NFT_META_OIF: packet output interface index (dev->ifindex)
 565  * @NFT_META_IIFNAME: packet input interface name (dev->name)
 566  * @NFT_META_OIFNAME: packet output interface name (dev->name)
 567  * @NFT_META_IIFTYPE: packet input interface type (dev->type)
 568  * @NFT_META_OIFTYPE: packet output interface type (dev->type)
 569  * @NFT_META_SKUID: originating socket UID (fsuid)
 570  * @NFT_META_SKGID: originating socket GID (fsgid)
 571  * @NFT_META_NFTRACE: packet nftrace bit
 572  * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
 573  * @NFT_META_SECMARK: packet secmark (skb->secmark)
 574  * @NFT_META_NFPROTO: netfilter protocol
 575  * @NFT_META_L4PROTO: layer 4 protocol number
 576  * @NFT_META_BRI_IIFNAME: packet input bridge interface name
 577  * @NFT_META_BRI_OIFNAME: packet output bridge interface name
 578  * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
 579  * @NFT_META_CPU: cpu id through smp_processor_id()
 580  * @NFT_META_IIFGROUP: packet input interface group
 581  * @NFT_META_OIFGROUP: packet output interface group
 582  */
 583 enum nft_meta_keys {
 584         NFT_META_LEN,
 585         NFT_META_PROTOCOL,
 586         NFT_META_PRIORITY,
 587         NFT_META_MARK,
 588         NFT_META_IIF,
 589         NFT_META_OIF,
 590         NFT_META_IIFNAME,
 591         NFT_META_OIFNAME,
 592         NFT_META_IIFTYPE,
 593         NFT_META_OIFTYPE,
 594         NFT_META_SKUID,
 595         NFT_META_SKGID,
 596         NFT_META_NFTRACE,
 597         NFT_META_RTCLASSID,
 598         NFT_META_SECMARK,
 599         NFT_META_NFPROTO,
 600         NFT_META_L4PROTO,
 601         NFT_META_BRI_IIFNAME,
 602         NFT_META_BRI_OIFNAME,
 603         NFT_META_PKTTYPE,
 604         NFT_META_CPU,
 605         NFT_META_IIFGROUP,
 606         NFT_META_OIFGROUP,
 607 };
 608
 609 /**
 610  * enum nft_meta_attributes - nf_tables meta expression netlink attributes
 611  *
 612  * @NFTA_META_DREG: destination register (NLA_U32)
 613  * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
 614  * @NFTA_META_SREG: source register (NLA_U32)
 615  */
 616 enum nft_meta_attributes {
 617         NFTA_META_UNSPEC,
 618         NFTA_META_DREG,
 619         NFTA_META_KEY,
 620         NFTA_META_SREG,
 621         __NFTA_META_MAX
 622 };
 623 #define NFTA_META_MAX           (__NFTA_META_MAX - 1)
 624
 625 /**
 626  * enum nft_ct_keys - nf_tables ct expression keys
 627  *
 628  * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
 629  * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
 630  * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
 631  * @NFT_CT_MARK: conntrack mark value
 632  * @NFT_CT_SECMARK: conntrack secmark value
 633  * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
 634  * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
 635  * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
 636  * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
 637  * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
 638  * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
 639  * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
 640  * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
 641  */
 642 enum nft_ct_keys {
 643         NFT_CT_STATE,
 644         NFT_CT_DIRECTION,
 645         NFT_CT_STATUS,
 646         NFT_CT_MARK,
 647         NFT_CT_SECMARK,
 648         NFT_CT_EXPIRATION,
 649         NFT_CT_HELPER,
 650         NFT_CT_L3PROTOCOL,
 651         NFT_CT_SRC,
 652         NFT_CT_DST,
 653         NFT_CT_PROTOCOL,
 654         NFT_CT_PROTO_SRC,
 655         NFT_CT_PROTO_DST,
 656         NFT_CT_LABELS,
 657 };
 658
 659 /**
 660  * enum nft_ct_attributes - nf_tables ct expression netlink attributes
 661  *
 662  * @NFTA_CT_DREG: destination register (NLA_U32)
 663  * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
 664  * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
 665  * @NFTA_CT_SREG: source register (NLA_U32)
 666  */
 667 enum nft_ct_attributes {
 668         NFTA_CT_UNSPEC,
 669         NFTA_CT_DREG,
 670         NFTA_CT_KEY,
 671         NFTA_CT_DIRECTION,
 672         NFTA_CT_SREG,
 673         __NFTA_CT_MAX
 674 };
 675 #define NFTA_CT_MAX             (__NFTA_CT_MAX - 1)
 676
 677 /**
 678  * enum nft_limit_attributes - nf_tables limit expression netlink attributes
 679  *
 680  * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
 681  * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
 682  */
 683 enum nft_limit_attributes {
 684         NFTA_LIMIT_UNSPEC,
 685         NFTA_LIMIT_RATE,
 686         NFTA_LIMIT_UNIT,
 687         __NFTA_LIMIT_MAX
 688 };
 689 #define NFTA_LIMIT_MAX          (__NFTA_LIMIT_MAX - 1)
 690
 691 /**
 692  * enum nft_counter_attributes - nf_tables counter expression netlink attributes
 693  *
 694  * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
 695  * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
 696  */
 697 enum nft_counter_attributes {
 698         NFTA_COUNTER_UNSPEC,
 699         NFTA_COUNTER_BYTES,
 700         NFTA_COUNTER_PACKETS,
 701         __NFTA_COUNTER_MAX
 702 };
 703 #define NFTA_COUNTER_MAX        (__NFTA_COUNTER_MAX - 1)
 704
 705 /**
 706  * enum nft_log_attributes - nf_tables log expression netlink attributes
 707  *
 708  * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
 709  * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
 710  * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
 711  * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
 712  * @NFTA_LOG_LEVEL: log level (NLA_U32)
 713  * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
 714  */
 715 enum nft_log_attributes {
 716         NFTA_LOG_UNSPEC,
 717         NFTA_LOG_GROUP,
 718         NFTA_LOG_PREFIX,
 719         NFTA_LOG_SNAPLEN,
 720         NFTA_LOG_QTHRESHOLD,
 721         NFTA_LOG_LEVEL,
 722         NFTA_LOG_FLAGS,
 723         __NFTA_LOG_MAX
 724 };
 725 #define NFTA_LOG_MAX            (__NFTA_LOG_MAX - 1)
 726
 727 /**
 728  * enum nft_queue_attributes - nf_tables queue expression netlink attributes
 729  *
 730  * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
 731  * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
 732  * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
 733  */
 734 enum nft_queue_attributes {
 735         NFTA_QUEUE_UNSPEC,
 736         NFTA_QUEUE_NUM,
 737         NFTA_QUEUE_TOTAL,
 738         NFTA_QUEUE_FLAGS,
 739         __NFTA_QUEUE_MAX
 740 };
 741 #define NFTA_QUEUE_MAX          (__NFTA_QUEUE_MAX - 1)
 742
 743 #define NFT_QUEUE_FLAG_BYPASS           0x01 /* for compatibility with v2 */
 744 #define NFT_QUEUE_FLAG_CPU_FANOUT       0x02 /* use current CPU (no hashing) */
 745 #define NFT_QUEUE_FLAG_MASK             0x03
 746
 747 /**
 748  * enum nft_reject_types - nf_tables reject expression reject types
 749  *
 750  * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
 751  * @NFT_REJECT_TCP_RST: reject using TCP RST
 752  * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
 753  */
 754 enum nft_reject_types {
 755         NFT_REJECT_ICMP_UNREACH,
 756         NFT_REJECT_TCP_RST,
 757         NFT_REJECT_ICMPX_UNREACH,
 758 };
 759
 760 /**
 761  * enum nft_reject_code - Generic reject codes for IPv4/IPv6
 762  *
 763  * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
 764  * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
 765  * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
 766  * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
 767  *
 768  * These codes are mapped to real ICMP and ICMPv6 codes.
 769  */
 770 enum nft_reject_inet_code {
 771         NFT_REJECT_ICMPX_NO_ROUTE       = 0,
 772         NFT_REJECT_ICMPX_PORT_UNREACH,
 773         NFT_REJECT_ICMPX_HOST_UNREACH,
 774         NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
 775         __NFT_REJECT_ICMPX_MAX
 776 };
 777 #define NFT_REJECT_ICMPX_MAX    (__NFT_REJECT_ICMPX_MAX + 1)
 778
 779 /**
 780  * enum nft_reject_attributes - nf_tables reject expression netlink attributes
 781  *
 782  * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
 783  * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
 784  */
 785 enum nft_reject_attributes {
 786         NFTA_REJECT_UNSPEC,
 787         NFTA_REJECT_TYPE,
 788         NFTA_REJECT_ICMP_CODE,
 789         __NFTA_REJECT_MAX
 790 };
 791 #define NFTA_REJECT_MAX         (__NFTA_REJECT_MAX - 1)
 792
 793 /**
 794  * enum nft_nat_types - nf_tables nat expression NAT types
 795  *
 796  * @NFT_NAT_SNAT: source NAT
 797  * @NFT_NAT_DNAT: destination NAT
 798  */
 799 enum nft_nat_types {
 800         NFT_NAT_SNAT,
 801         NFT_NAT_DNAT,
 802 };
 803
 804 /**
 805  * enum nft_nat_attributes - nf_tables nat expression netlink attributes
 806  *
 807  * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
 808  * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
 809  * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
 810  * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
 811  * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
 812  * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
 813  * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
 814  */
 815 enum nft_nat_attributes {
 816         NFTA_NAT_UNSPEC,
 817         NFTA_NAT_TYPE,
 818         NFTA_NAT_FAMILY,
 819         NFTA_NAT_REG_ADDR_MIN,
 820         NFTA_NAT_REG_ADDR_MAX,
 821         NFTA_NAT_REG_PROTO_MIN,
 822         NFTA_NAT_REG_PROTO_MAX,
 823         NFTA_NAT_FLAGS,
 824         __NFTA_NAT_MAX
 825 };
 826 #define NFTA_NAT_MAX            (__NFTA_NAT_MAX - 1)
 827
 828 /**
 829  * enum nft_masq_attributes - nf_tables masquerade expression attributes
 830  *
 831  * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
 832  */
 833 enum nft_masq_attributes {
 834         NFTA_MASQ_UNSPEC,
 835         NFTA_MASQ_FLAGS,
 836         __NFTA_MASQ_MAX
 837 };
 838 #define NFTA_MASQ_MAX           (__NFTA_MASQ_MAX - 1)
 839
 840 /**
 841  * enum nft_gen_attributes - nf_tables ruleset generation attributes
 842  *
 843  * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
 844  */
 845 enum nft_gen_attributes {
 846         NFTA_GEN_UNSPEC,
 847         NFTA_GEN_ID,
 848         __NFTA_GEN_MAX
 849 };
 850 #define NFTA_GEN_MAX            (__NFTA_GEN_MAX - 1)
 851
 852 #endif /* _LINUX_NF_TABLES_H */