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