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_OBJ_MAXNAMELEN      32
   8 #define NFT_USERDATA_MAXLEN     256
   9
  10 /**
  11  * enum nft_registers - nf_tables registers
  12  *
  13  * nf_tables used to have five registers: a verdict register and four data
  14  * registers of size 16. The data registers have been changed to 16 registers
  15  * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
  16  * map to areas of size 16, the 4 byte registers are addressed using
  17  * NFT_REG32_00 - NFT_REG32_15.
  18  */
  19 enum nft_registers {
  20         NFT_REG_VERDICT,
  21         NFT_REG_1,
  22         NFT_REG_2,
  23         NFT_REG_3,
  24         NFT_REG_4,
  25         __NFT_REG_MAX,
  26
  27         NFT_REG32_00    = 8,
  28         NFT_REG32_01,
  29         NFT_REG32_02,
  30         NFT_REG32_03,
  31         NFT_REG32_04,
  32         NFT_REG32_05,
  33         NFT_REG32_06,
  34         NFT_REG32_07,
  35         NFT_REG32_08,
  36         NFT_REG32_09,
  37         NFT_REG32_10,
  38         NFT_REG32_11,
  39         NFT_REG32_12,
  40         NFT_REG32_13,
  41         NFT_REG32_14,
  42         NFT_REG32_15,
  43 };
  44 #define NFT_REG_MAX     (__NFT_REG_MAX - 1)
  45
  46 #define NFT_REG_SIZE    16
  47 #define NFT_REG32_SIZE  4
  48
  49 /**
  50  * enum nft_verdicts - nf_tables internal verdicts
  51  *
  52  * @NFT_CONTINUE: continue evaluation of the current rule
  53  * @NFT_BREAK: terminate evaluation of the current rule
  54  * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
  55  * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
  56  * @NFT_RETURN: return to the topmost chain on the jump stack
  57  *
  58  * The nf_tables verdicts share their numeric space with the netfilter verdicts.
  59  */
  60 enum nft_verdicts {
  61         NFT_CONTINUE    = -1,
  62         NFT_BREAK       = -2,
  63         NFT_JUMP        = -3,
  64         NFT_GOTO        = -4,
  65         NFT_RETURN      = -5,
  66 };
  67
  68 /**
  69  * enum nf_tables_msg_types - nf_tables netlink message types
  70  *
  71  * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
  72  * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
  73  * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
  74  * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
  75  * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
  76  * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
  77  * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
  78  * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
  79  * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
  80  * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
  81  * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
  82  * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
  83  * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
  84  * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
  85  * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
  86  * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
  87  * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
  88  * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
  89  * @NFT_MSG_NEWOBJ: create a stateful object (enum nft_obj_attributes)
  90  * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
  91  * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
  92  * @NFT_MSG_GETOBJ_RESET: get and reset a stateful object (enum nft_obj_attributes)
  93  */
  94 enum nf_tables_msg_types {
  95         NFT_MSG_NEWTABLE,
  96         NFT_MSG_GETTABLE,
  97         NFT_MSG_DELTABLE,
  98         NFT_MSG_NEWCHAIN,
  99         NFT_MSG_GETCHAIN,
 100         NFT_MSG_DELCHAIN,
 101         NFT_MSG_NEWRULE,
 102         NFT_MSG_GETRULE,
 103         NFT_MSG_DELRULE,
 104         NFT_MSG_NEWSET,
 105         NFT_MSG_GETSET,
 106         NFT_MSG_DELSET,
 107         NFT_MSG_NEWSETELEM,
 108         NFT_MSG_GETSETELEM,
 109         NFT_MSG_DELSETELEM,
 110         NFT_MSG_NEWGEN,
 111         NFT_MSG_GETGEN,
 112         NFT_MSG_TRACE,
 113         NFT_MSG_NEWOBJ,
 114         NFT_MSG_GETOBJ,
 115         NFT_MSG_DELOBJ,
 116         NFT_MSG_GETOBJ_RESET,
 117         NFT_MSG_MAX,
 118 };
 119
 120 /**
 121  * enum nft_list_attributes - nf_tables generic list netlink attributes
 122  *
 123  * @NFTA_LIST_ELEM: list element (NLA_NESTED)
 124  */
 125 enum nft_list_attributes {
 126         NFTA_LIST_UNPEC,
 127         NFTA_LIST_ELEM,
 128         __NFTA_LIST_MAX
 129 };
 130 #define NFTA_LIST_MAX           (__NFTA_LIST_MAX - 1)
 131
 132 /**
 133  * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
 134  *
 135  * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
 136  * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
 137  * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
 138  */
 139 enum nft_hook_attributes {
 140         NFTA_HOOK_UNSPEC,
 141         NFTA_HOOK_HOOKNUM,
 142         NFTA_HOOK_PRIORITY,
 143         NFTA_HOOK_DEV,
 144         __NFTA_HOOK_MAX
 145 };
 146 #define NFTA_HOOK_MAX           (__NFTA_HOOK_MAX - 1)
 147
 148 /**
 149  * enum nft_table_flags - nf_tables table flags
 150  *
 151  * @NFT_TABLE_F_DORMANT: this table is not active
 152  */
 153 enum nft_table_flags {
 154         NFT_TABLE_F_DORMANT     = 0x1,
 155 };
 156
 157 /**
 158  * enum nft_table_attributes - nf_tables table netlink attributes
 159  *
 160  * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
 161  * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
 162  * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
 163  */
 164 enum nft_table_attributes {
 165         NFTA_TABLE_UNSPEC,
 166         NFTA_TABLE_NAME,
 167         NFTA_TABLE_FLAGS,
 168         NFTA_TABLE_USE,
 169         __NFTA_TABLE_MAX
 170 };
 171 #define NFTA_TABLE_MAX          (__NFTA_TABLE_MAX - 1)
 172
 173 /**
 174  * enum nft_chain_attributes - nf_tables chain netlink attributes
 175  *
 176  * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
 177  * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
 178  * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
 179  * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
 180  * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
 181  * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
 182  * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
 183  * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
 184  */
 185 enum nft_chain_attributes {
 186         NFTA_CHAIN_UNSPEC,
 187         NFTA_CHAIN_TABLE,
 188         NFTA_CHAIN_HANDLE,
 189         NFTA_CHAIN_NAME,
 190         NFTA_CHAIN_HOOK,
 191         NFTA_CHAIN_POLICY,
 192         NFTA_CHAIN_USE,
 193         NFTA_CHAIN_TYPE,
 194         NFTA_CHAIN_COUNTERS,
 195         NFTA_CHAIN_PAD,
 196         __NFTA_CHAIN_MAX
 197 };
 198 #define NFTA_CHAIN_MAX          (__NFTA_CHAIN_MAX - 1)
 199
 200 /**
 201  * enum nft_rule_attributes - nf_tables rule netlink attributes
 202  *
 203  * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
 204  * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
 205  * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
 206  * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
 207  * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
 208  * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
 209  * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
 210  */
 211 enum nft_rule_attributes {
 212         NFTA_RULE_UNSPEC,
 213         NFTA_RULE_TABLE,
 214         NFTA_RULE_CHAIN,
 215         NFTA_RULE_HANDLE,
 216         NFTA_RULE_EXPRESSIONS,
 217         NFTA_RULE_COMPAT,
 218         NFTA_RULE_POSITION,
 219         NFTA_RULE_USERDATA,
 220         NFTA_RULE_PAD,
 221         __NFTA_RULE_MAX
 222 };
 223 #define NFTA_RULE_MAX           (__NFTA_RULE_MAX - 1)
 224
 225 /**
 226  * enum nft_rule_compat_flags - nf_tables rule compat flags
 227  *
 228  * @NFT_RULE_COMPAT_F_INV: invert the check result
 229  */
 230 enum nft_rule_compat_flags {
 231         NFT_RULE_COMPAT_F_INV   = (1 << 1),
 232         NFT_RULE_COMPAT_F_MASK  = NFT_RULE_COMPAT_F_INV,
 233 };
 234
 235 /**
 236  * enum nft_rule_compat_attributes - nf_tables rule compat attributes
 237  *
 238  * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
 239  * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
 240  */
 241 enum nft_rule_compat_attributes {
 242         NFTA_RULE_COMPAT_UNSPEC,
 243         NFTA_RULE_COMPAT_PROTO,
 244         NFTA_RULE_COMPAT_FLAGS,
 245         __NFTA_RULE_COMPAT_MAX
 246 };
 247 #define NFTA_RULE_COMPAT_MAX    (__NFTA_RULE_COMPAT_MAX - 1)
 248
 249 /**
 250  * enum nft_set_flags - nf_tables set flags
 251  *
 252  * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
 253  * @NFT_SET_CONSTANT: set contents may not change while bound
 254  * @NFT_SET_INTERVAL: set contains intervals
 255  * @NFT_SET_MAP: set is used as a dictionary
 256  * @NFT_SET_TIMEOUT: set uses timeouts
 257  * @NFT_SET_EVAL: set contains expressions for evaluation
 258  */
 259 enum nft_set_flags {
 260         NFT_SET_ANONYMOUS               = 0x1,
 261         NFT_SET_CONSTANT                = 0x2,
 262         NFT_SET_INTERVAL                = 0x4,
 263         NFT_SET_MAP                     = 0x8,
 264         NFT_SET_TIMEOUT                 = 0x10,
 265         NFT_SET_EVAL                    = 0x20,
 266 };
 267
 268 /**
 269  * enum nft_set_policies - set selection policy
 270  *
 271  * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
 272  * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
 273  */
 274 enum nft_set_policies {
 275         NFT_SET_POL_PERFORMANCE,
 276         NFT_SET_POL_MEMORY,
 277 };
 278
 279 /**
 280  * enum nft_set_desc_attributes - set element description
 281  *
 282  * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
 283  */
 284 enum nft_set_desc_attributes {
 285         NFTA_SET_DESC_UNSPEC,
 286         NFTA_SET_DESC_SIZE,
 287         __NFTA_SET_DESC_MAX
 288 };
 289 #define NFTA_SET_DESC_MAX       (__NFTA_SET_DESC_MAX - 1)
 290
 291 /**
 292  * enum nft_set_attributes - nf_tables set netlink attributes
 293  *
 294  * @NFTA_SET_TABLE: table name (NLA_STRING)
 295  * @NFTA_SET_NAME: set name (NLA_STRING)
 296  * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
 297  * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
 298  * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
 299  * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
 300  * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
 301  * @NFTA_SET_POLICY: selection policy (NLA_U32)
 302  * @NFTA_SET_DESC: set description (NLA_NESTED)
 303  * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 304  * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
 305  * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
 306  * @NFTA_SET_USERDATA: user data (NLA_BINARY)
 307  */
 308 enum nft_set_attributes {
 309         NFTA_SET_UNSPEC,
 310         NFTA_SET_TABLE,
 311         NFTA_SET_NAME,
 312         NFTA_SET_FLAGS,
 313         NFTA_SET_KEY_TYPE,
 314         NFTA_SET_KEY_LEN,
 315         NFTA_SET_DATA_TYPE,
 316         NFTA_SET_DATA_LEN,
 317         NFTA_SET_POLICY,
 318         NFTA_SET_DESC,
 319         NFTA_SET_ID,
 320         NFTA_SET_TIMEOUT,
 321         NFTA_SET_GC_INTERVAL,
 322         NFTA_SET_USERDATA,
 323         NFTA_SET_PAD,
 324         __NFTA_SET_MAX
 325 };
 326 #define NFTA_SET_MAX            (__NFTA_SET_MAX - 1)
 327
 328 /**
 329  * enum nft_set_elem_flags - nf_tables set element flags
 330  *
 331  * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
 332  */
 333 enum nft_set_elem_flags {
 334         NFT_SET_ELEM_INTERVAL_END       = 0x1,
 335 };
 336
 337 /**
 338  * enum nft_set_elem_attributes - nf_tables set element netlink attributes
 339  *
 340  * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
 341  * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
 342  * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
 343  * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
 344  * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
 345  * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
 346  * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 347  */
 348 enum nft_set_elem_attributes {
 349         NFTA_SET_ELEM_UNSPEC,
 350         NFTA_SET_ELEM_KEY,
 351         NFTA_SET_ELEM_DATA,
 352         NFTA_SET_ELEM_FLAGS,
 353         NFTA_SET_ELEM_TIMEOUT,
 354         NFTA_SET_ELEM_EXPIRATION,
 355         NFTA_SET_ELEM_USERDATA,
 356         NFTA_SET_ELEM_EXPR,
 357         NFTA_SET_ELEM_PAD,
 358         __NFTA_SET_ELEM_MAX
 359 };
 360 #define NFTA_SET_ELEM_MAX       (__NFTA_SET_ELEM_MAX - 1)
 361
 362 /**
 363  * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
 364  *
 365  * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
 366  * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
 367  * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
 368  * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 369  */
 370 enum nft_set_elem_list_attributes {
 371         NFTA_SET_ELEM_LIST_UNSPEC,
 372         NFTA_SET_ELEM_LIST_TABLE,
 373         NFTA_SET_ELEM_LIST_SET,
 374         NFTA_SET_ELEM_LIST_ELEMENTS,
 375         NFTA_SET_ELEM_LIST_SET_ID,
 376         __NFTA_SET_ELEM_LIST_MAX
 377 };
 378 #define NFTA_SET_ELEM_LIST_MAX  (__NFTA_SET_ELEM_LIST_MAX - 1)
 379
 380 /**
 381  * enum nft_data_types - nf_tables data types
 382  *
 383  * @NFT_DATA_VALUE: generic data
 384  * @NFT_DATA_VERDICT: netfilter verdict
 385  *
 386  * The type of data is usually determined by the kernel directly and is not
 387  * explicitly specified by userspace. The only difference are sets, where
 388  * userspace specifies the key and mapping data types.
 389  *
 390  * The values 0xffffff00-0xffffffff are reserved for internally used types.
 391  * The remaining range can be freely used by userspace to encode types, all
 392  * values are equivalent to NFT_DATA_VALUE.
 393  */
 394 enum nft_data_types {
 395         NFT_DATA_VALUE,
 396         NFT_DATA_VERDICT        = 0xffffff00U,
 397 };
 398
 399 #define NFT_DATA_RESERVED_MASK  0xffffff00U
 400
 401 /**
 402  * enum nft_data_attributes - nf_tables data netlink attributes
 403  *
 404  * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
 405  * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
 406  */
 407 enum nft_data_attributes {
 408         NFTA_DATA_UNSPEC,
 409         NFTA_DATA_VALUE,
 410         NFTA_DATA_VERDICT,
 411         __NFTA_DATA_MAX
 412 };
 413 #define NFTA_DATA_MAX           (__NFTA_DATA_MAX - 1)
 414
 415 /* Maximum length of a value */
 416 #define NFT_DATA_VALUE_MAXLEN   64
 417
 418 /**
 419  * enum nft_verdict_attributes - nf_tables verdict netlink attributes
 420  *
 421  * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
 422  * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
 423  */
 424 enum nft_verdict_attributes {
 425         NFTA_VERDICT_UNSPEC,
 426         NFTA_VERDICT_CODE,
 427         NFTA_VERDICT_CHAIN,
 428         __NFTA_VERDICT_MAX
 429 };
 430 #define NFTA_VERDICT_MAX        (__NFTA_VERDICT_MAX - 1)
 431
 432 /**
 433  * enum nft_expr_attributes - nf_tables expression netlink attributes
 434  *
 435  * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
 436  * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
 437  */
 438 enum nft_expr_attributes {
 439         NFTA_EXPR_UNSPEC,
 440         NFTA_EXPR_NAME,
 441         NFTA_EXPR_DATA,
 442         __NFTA_EXPR_MAX
 443 };
 444 #define NFTA_EXPR_MAX           (__NFTA_EXPR_MAX - 1)
 445
 446 /**
 447  * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
 448  *
 449  * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
 450  * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
 451  */
 452 enum nft_immediate_attributes {
 453         NFTA_IMMEDIATE_UNSPEC,
 454         NFTA_IMMEDIATE_DREG,
 455         NFTA_IMMEDIATE_DATA,
 456         __NFTA_IMMEDIATE_MAX
 457 };
 458 #define NFTA_IMMEDIATE_MAX      (__NFTA_IMMEDIATE_MAX - 1)
 459
 460 /**
 461  * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
 462  *
 463  * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
 464  * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
 465  * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
 466  * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
 467  * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
 468  *
 469  * The bitwise expression performs the following operation:
 470  *
 471  * dreg = (sreg & mask) ^ xor
 472  *
 473  * which allow to express all bitwise operations:
 474  *
 475  *              mask    xor
 476  * NOT:         1       1
 477  * OR:          0       x
 478  * XOR:         1       x
 479  * AND:         x       0
 480  */
 481 enum nft_bitwise_attributes {
 482         NFTA_BITWISE_UNSPEC,
 483         NFTA_BITWISE_SREG,
 484         NFTA_BITWISE_DREG,
 485         NFTA_BITWISE_LEN,
 486         NFTA_BITWISE_MASK,
 487         NFTA_BITWISE_XOR,
 488         __NFTA_BITWISE_MAX
 489 };
 490 #define NFTA_BITWISE_MAX        (__NFTA_BITWISE_MAX - 1)
 491
 492 /**
 493  * enum nft_byteorder_ops - nf_tables byteorder operators
 494  *
 495  * @NFT_BYTEORDER_NTOH: network to host operator
 496  * @NFT_BYTEORDER_HTON: host to network opertaor
 497  */
 498 enum nft_byteorder_ops {
 499         NFT_BYTEORDER_NTOH,
 500         NFT_BYTEORDER_HTON,
 501 };
 502
 503 /**
 504  * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
 505  *
 506  * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
 507  * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
 508  * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
 509  * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
 510  * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
 511  */
 512 enum nft_byteorder_attributes {
 513         NFTA_BYTEORDER_UNSPEC,
 514         NFTA_BYTEORDER_SREG,
 515         NFTA_BYTEORDER_DREG,
 516         NFTA_BYTEORDER_OP,
 517         NFTA_BYTEORDER_LEN,
 518         NFTA_BYTEORDER_SIZE,
 519         __NFTA_BYTEORDER_MAX
 520 };
 521 #define NFTA_BYTEORDER_MAX      (__NFTA_BYTEORDER_MAX - 1)
 522
 523 /**
 524  * enum nft_cmp_ops - nf_tables relational operator
 525  *
 526  * @NFT_CMP_EQ: equal
 527  * @NFT_CMP_NEQ: not equal
 528  * @NFT_CMP_LT: less than
 529  * @NFT_CMP_LTE: less than or equal to
 530  * @NFT_CMP_GT: greater than
 531  * @NFT_CMP_GTE: greater than or equal to
 532  */
 533 enum nft_cmp_ops {
 534         NFT_CMP_EQ,
 535         NFT_CMP_NEQ,
 536         NFT_CMP_LT,
 537         NFT_CMP_LTE,
 538         NFT_CMP_GT,
 539         NFT_CMP_GTE,
 540 };
 541
 542 /**
 543  * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
 544  *
 545  * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
 546  * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
 547  * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
 548  */
 549 enum nft_cmp_attributes {
 550         NFTA_CMP_UNSPEC,
 551         NFTA_CMP_SREG,
 552         NFTA_CMP_OP,
 553         NFTA_CMP_DATA,
 554         __NFTA_CMP_MAX
 555 };
 556 #define NFTA_CMP_MAX            (__NFTA_CMP_MAX - 1)
 557
 558 /**
 559  * enum nft_range_ops - nf_tables range operator
 560  *
 561  * @NFT_RANGE_EQ: equal
 562  * @NFT_RANGE_NEQ: not equal
 563  */
 564 enum nft_range_ops {
 565         NFT_RANGE_EQ,
 566         NFT_RANGE_NEQ,
 567 };
 568
 569 /**
 570  * enum nft_range_attributes - nf_tables range expression netlink attributes
 571  *
 572  * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
 573  * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
 574  * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
 575  * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
 576  */
 577 enum nft_range_attributes {
 578         NFTA_RANGE_UNSPEC,
 579         NFTA_RANGE_SREG,
 580         NFTA_RANGE_OP,
 581         NFTA_RANGE_FROM_DATA,
 582         NFTA_RANGE_TO_DATA,
 583         __NFTA_RANGE_MAX
 584 };
 585 #define NFTA_RANGE_MAX          (__NFTA_RANGE_MAX - 1)
 586
 587 enum nft_lookup_flags {
 588         NFT_LOOKUP_F_INV = (1 << 0),
 589 };
 590
 591 /**
 592  * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
 593  *
 594  * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
 595  * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
 596  * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
 597  * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 598  * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
 599  */
 600 enum nft_lookup_attributes {
 601         NFTA_LOOKUP_UNSPEC,
 602         NFTA_LOOKUP_SET,
 603         NFTA_LOOKUP_SREG,
 604         NFTA_LOOKUP_DREG,
 605         NFTA_LOOKUP_SET_ID,
 606         NFTA_LOOKUP_FLAGS,
 607         __NFTA_LOOKUP_MAX
 608 };
 609 #define NFTA_LOOKUP_MAX         (__NFTA_LOOKUP_MAX - 1)
 610
 611 enum nft_dynset_ops {
 612         NFT_DYNSET_OP_ADD,
 613         NFT_DYNSET_OP_UPDATE,
 614 };
 615
 616 enum nft_dynset_flags {
 617         NFT_DYNSET_F_INV        = (1 << 0),
 618 };
 619
 620 /**
 621  * enum nft_dynset_attributes - dynset expression attributes
 622  *
 623  * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
 624  * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
 625  * @NFTA_DYNSET_OP: operation (NLA_U32)
 626  * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
 627  * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
 628  * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
 629  * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 630  * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
 631  */
 632 enum nft_dynset_attributes {
 633         NFTA_DYNSET_UNSPEC,
 634         NFTA_DYNSET_SET_NAME,
 635         NFTA_DYNSET_SET_ID,
 636         NFTA_DYNSET_OP,
 637         NFTA_DYNSET_SREG_KEY,
 638         NFTA_DYNSET_SREG_DATA,
 639         NFTA_DYNSET_TIMEOUT,
 640         NFTA_DYNSET_EXPR,
 641         NFTA_DYNSET_PAD,
 642         NFTA_DYNSET_FLAGS,
 643         __NFTA_DYNSET_MAX,
 644 };
 645 #define NFTA_DYNSET_MAX         (__NFTA_DYNSET_MAX - 1)
 646
 647 /**
 648  * enum nft_payload_bases - nf_tables payload expression offset bases
 649  *
 650  * @NFT_PAYLOAD_LL_HEADER: link layer header
 651  * @NFT_PAYLOAD_NETWORK_HEADER: network header
 652  * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
 653  */
 654 enum nft_payload_bases {
 655         NFT_PAYLOAD_LL_HEADER,
 656         NFT_PAYLOAD_NETWORK_HEADER,
 657         NFT_PAYLOAD_TRANSPORT_HEADER,
 658 };
 659
 660 /**
 661  * enum nft_payload_csum_types - nf_tables payload expression checksum types
 662  *
 663  * @NFT_PAYLOAD_CSUM_NONE: no checksumming
 664  * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
 665  */
 666 enum nft_payload_csum_types {
 667         NFT_PAYLOAD_CSUM_NONE,
 668         NFT_PAYLOAD_CSUM_INET,
 669 };
 670
 671 enum nft_payload_csum_flags {
 672         NFT_PAYLOAD_L4CSUM_PSEUDOHDR = (1 << 0),
 673 };
 674
 675 /**
 676  * enum nft_payload_attributes - nf_tables payload expression netlink attributes
 677  *
 678  * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
 679  * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
 680  * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
 681  * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
 682  * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
 683  * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
 684  * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
 685  * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
 686  */
 687 enum nft_payload_attributes {
 688         NFTA_PAYLOAD_UNSPEC,
 689         NFTA_PAYLOAD_DREG,
 690         NFTA_PAYLOAD_BASE,
 691         NFTA_PAYLOAD_OFFSET,
 692         NFTA_PAYLOAD_LEN,
 693         NFTA_PAYLOAD_SREG,
 694         NFTA_PAYLOAD_CSUM_TYPE,
 695         NFTA_PAYLOAD_CSUM_OFFSET,
 696         NFTA_PAYLOAD_CSUM_FLAGS,
 697         __NFTA_PAYLOAD_MAX
 698 };
 699 #define NFTA_PAYLOAD_MAX        (__NFTA_PAYLOAD_MAX - 1)
 700
 701 /**
 702  * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
 703  *
 704  * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
 705  * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
 706  * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
 707  * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
 708  */
 709 enum nft_exthdr_attributes {
 710         NFTA_EXTHDR_UNSPEC,
 711         NFTA_EXTHDR_DREG,
 712         NFTA_EXTHDR_TYPE,
 713         NFTA_EXTHDR_OFFSET,
 714         NFTA_EXTHDR_LEN,
 715         __NFTA_EXTHDR_MAX
 716 };
 717 #define NFTA_EXTHDR_MAX         (__NFTA_EXTHDR_MAX - 1)
 718
 719 /**
 720  * enum nft_meta_keys - nf_tables meta expression keys
 721  *
 722  * @NFT_META_LEN: packet length (skb->len)
 723  * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
 724  * @NFT_META_PRIORITY: packet priority (skb->priority)
 725  * @NFT_META_MARK: packet mark (skb->mark)
 726  * @NFT_META_IIF: packet input interface index (dev->ifindex)
 727  * @NFT_META_OIF: packet output interface index (dev->ifindex)
 728  * @NFT_META_IIFNAME: packet input interface name (dev->name)
 729  * @NFT_META_OIFNAME: packet output interface name (dev->name)
 730  * @NFT_META_IIFTYPE: packet input interface type (dev->type)
 731  * @NFT_META_OIFTYPE: packet output interface type (dev->type)
 732  * @NFT_META_SKUID: originating socket UID (fsuid)
 733  * @NFT_META_SKGID: originating socket GID (fsgid)
 734  * @NFT_META_NFTRACE: packet nftrace bit
 735  * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
 736  * @NFT_META_SECMARK: packet secmark (skb->secmark)
 737  * @NFT_META_NFPROTO: netfilter protocol
 738  * @NFT_META_L4PROTO: layer 4 protocol number
 739  * @NFT_META_BRI_IIFNAME: packet input bridge interface name
 740  * @NFT_META_BRI_OIFNAME: packet output bridge interface name
 741  * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
 742  * @NFT_META_CPU: cpu id through smp_processor_id()
 743  * @NFT_META_IIFGROUP: packet input interface group
 744  * @NFT_META_OIFGROUP: packet output interface group
 745  * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
 746  * @NFT_META_PRANDOM: a 32bit pseudo-random number
 747  */
 748 enum nft_meta_keys {
 749         NFT_META_LEN,
 750         NFT_META_PROTOCOL,
 751         NFT_META_PRIORITY,
 752         NFT_META_MARK,
 753         NFT_META_IIF,
 754         NFT_META_OIF,
 755         NFT_META_IIFNAME,
 756         NFT_META_OIFNAME,
 757         NFT_META_IIFTYPE,
 758         NFT_META_OIFTYPE,
 759         NFT_META_SKUID,
 760         NFT_META_SKGID,
 761         NFT_META_NFTRACE,
 762         NFT_META_RTCLASSID,
 763         NFT_META_SECMARK,
 764         NFT_META_NFPROTO,
 765         NFT_META_L4PROTO,
 766         NFT_META_BRI_IIFNAME,
 767         NFT_META_BRI_OIFNAME,
 768         NFT_META_PKTTYPE,
 769         NFT_META_CPU,
 770         NFT_META_IIFGROUP,
 771         NFT_META_OIFGROUP,
 772         NFT_META_CGROUP,
 773         NFT_META_PRANDOM,
 774 };
 775
 776 /**
 777  * enum nft_rt_keys - nf_tables routing expression keys
 778  *
 779  * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
 780  * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
 781  * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
 782  */
 783 enum nft_rt_keys {
 784         NFT_RT_CLASSID,
 785         NFT_RT_NEXTHOP4,
 786         NFT_RT_NEXTHOP6,
 787 };
 788
 789 /**
 790  * enum nft_hash_attributes - nf_tables hash expression netlink attributes
 791  *
 792  * @NFTA_HASH_SREG: source register (NLA_U32)
 793  * @NFTA_HASH_DREG: destination register (NLA_U32)
 794  * @NFTA_HASH_LEN: source data length (NLA_U32)
 795  * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
 796  * @NFTA_HASH_SEED: seed value (NLA_U32)
 797  * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
 798  */
 799 enum nft_hash_attributes {
 800         NFTA_HASH_UNSPEC,
 801         NFTA_HASH_SREG,
 802         NFTA_HASH_DREG,
 803         NFTA_HASH_LEN,
 804         NFTA_HASH_MODULUS,
 805         NFTA_HASH_SEED,
 806         NFTA_HASH_OFFSET,
 807         __NFTA_HASH_MAX,
 808 };
 809 #define NFTA_HASH_MAX   (__NFTA_HASH_MAX - 1)
 810
 811 /**
 812  * enum nft_meta_attributes - nf_tables meta expression netlink attributes
 813  *
 814  * @NFTA_META_DREG: destination register (NLA_U32)
 815  * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
 816  * @NFTA_META_SREG: source register (NLA_U32)
 817  */
 818 enum nft_meta_attributes {
 819         NFTA_META_UNSPEC,
 820         NFTA_META_DREG,
 821         NFTA_META_KEY,
 822         NFTA_META_SREG,
 823         __NFTA_META_MAX
 824 };
 825 #define NFTA_META_MAX           (__NFTA_META_MAX - 1)
 826
 827 /**
 828  * enum nft_rt_attributes - nf_tables routing expression netlink attributes
 829  *
 830  * @NFTA_RT_DREG: destination register (NLA_U32)
 831  * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
 832  */
 833 enum nft_rt_attributes {
 834         NFTA_RT_UNSPEC,
 835         NFTA_RT_DREG,
 836         NFTA_RT_KEY,
 837         __NFTA_RT_MAX
 838 };
 839 #define NFTA_RT_MAX             (__NFTA_RT_MAX - 1)
 840
 841 /**
 842  * enum nft_ct_keys - nf_tables ct expression keys
 843  *
 844  * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
 845  * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
 846  * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
 847  * @NFT_CT_MARK: conntrack mark value
 848  * @NFT_CT_SECMARK: conntrack secmark value
 849  * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
 850  * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
 851  * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
 852  * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
 853  * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
 854  * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
 855  * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
 856  * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
 857  */
 858 enum nft_ct_keys {
 859         NFT_CT_STATE,
 860         NFT_CT_DIRECTION,
 861         NFT_CT_STATUS,
 862         NFT_CT_MARK,
 863         NFT_CT_SECMARK,
 864         NFT_CT_EXPIRATION,
 865         NFT_CT_HELPER,
 866         NFT_CT_L3PROTOCOL,
 867         NFT_CT_SRC,
 868         NFT_CT_DST,
 869         NFT_CT_PROTOCOL,
 870         NFT_CT_PROTO_SRC,
 871         NFT_CT_PROTO_DST,
 872         NFT_CT_LABELS,
 873         NFT_CT_PKTS,
 874         NFT_CT_BYTES,
 875 };
 876
 877 /**
 878  * enum nft_ct_attributes - nf_tables ct expression netlink attributes
 879  *
 880  * @NFTA_CT_DREG: destination register (NLA_U32)
 881  * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
 882  * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
 883  * @NFTA_CT_SREG: source register (NLA_U32)
 884  */
 885 enum nft_ct_attributes {
 886         NFTA_CT_UNSPEC,
 887         NFTA_CT_DREG,
 888         NFTA_CT_KEY,
 889         NFTA_CT_DIRECTION,
 890         NFTA_CT_SREG,
 891         __NFTA_CT_MAX
 892 };
 893 #define NFTA_CT_MAX             (__NFTA_CT_MAX - 1)
 894
 895 enum nft_limit_type {
 896         NFT_LIMIT_PKTS,
 897         NFT_LIMIT_PKT_BYTES
 898 };
 899
 900 enum nft_limit_flags {
 901         NFT_LIMIT_F_INV = (1 << 0),
 902 };
 903
 904 /**
 905  * enum nft_limit_attributes - nf_tables limit expression netlink attributes
 906  *
 907  * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
 908  * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
 909  * @NFTA_LIMIT_BURST: burst (NLA_U32)
 910  * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
 911  * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
 912  */
 913 enum nft_limit_attributes {
 914         NFTA_LIMIT_UNSPEC,
 915         NFTA_LIMIT_RATE,
 916         NFTA_LIMIT_UNIT,
 917         NFTA_LIMIT_BURST,
 918         NFTA_LIMIT_TYPE,
 919         NFTA_LIMIT_FLAGS,
 920         NFTA_LIMIT_PAD,
 921         __NFTA_LIMIT_MAX
 922 };
 923 #define NFTA_LIMIT_MAX          (__NFTA_LIMIT_MAX - 1)
 924
 925 /**
 926  * enum nft_counter_attributes - nf_tables counter expression netlink attributes
 927  *
 928  * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
 929  * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
 930  */
 931 enum nft_counter_attributes {
 932         NFTA_COUNTER_UNSPEC,
 933         NFTA_COUNTER_BYTES,
 934         NFTA_COUNTER_PACKETS,
 935         NFTA_COUNTER_PAD,
 936         __NFTA_COUNTER_MAX
 937 };
 938 #define NFTA_COUNTER_MAX        (__NFTA_COUNTER_MAX - 1)
 939
 940 /**
 941  * enum nft_log_attributes - nf_tables log expression netlink attributes
 942  *
 943  * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
 944  * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
 945  * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
 946  * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
 947  * @NFTA_LOG_LEVEL: log level (NLA_U32)
 948  * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
 949  */
 950 enum nft_log_attributes {
 951         NFTA_LOG_UNSPEC,
 952         NFTA_LOG_GROUP,
 953         NFTA_LOG_PREFIX,
 954         NFTA_LOG_SNAPLEN,
 955         NFTA_LOG_QTHRESHOLD,
 956         NFTA_LOG_LEVEL,
 957         NFTA_LOG_FLAGS,
 958         __NFTA_LOG_MAX
 959 };
 960 #define NFTA_LOG_MAX            (__NFTA_LOG_MAX - 1)
 961
 962 /**
 963  * enum nft_queue_attributes - nf_tables queue expression netlink attributes
 964  *
 965  * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
 966  * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
 967  * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
 968  * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
 969  */
 970 enum nft_queue_attributes {
 971         NFTA_QUEUE_UNSPEC,
 972         NFTA_QUEUE_NUM,
 973         NFTA_QUEUE_TOTAL,
 974         NFTA_QUEUE_FLAGS,
 975         NFTA_QUEUE_SREG_QNUM,
 976         __NFTA_QUEUE_MAX
 977 };
 978 #define NFTA_QUEUE_MAX          (__NFTA_QUEUE_MAX - 1)
 979
 980 #define NFT_QUEUE_FLAG_BYPASS           0x01 /* for compatibility with v2 */
 981 #define NFT_QUEUE_FLAG_CPU_FANOUT       0x02 /* use current CPU (no hashing) */
 982 #define NFT_QUEUE_FLAG_MASK             0x03
 983
 984 enum nft_quota_flags {
 985         NFT_QUOTA_F_INV         = (1 << 0),
 986         NFT_QUOTA_F_DEPLETED    = (1 << 1),
 987 };
 988
 989 /**
 990  * enum nft_quota_attributes - nf_tables quota expression netlink attributes
 991  *
 992  * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
 993  * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
 994  * @NFTA_QUOTA_CONSUMED: quota already consumed in bytes (NLA_U64)
 995  */
 996 enum nft_quota_attributes {
 997         NFTA_QUOTA_UNSPEC,
 998         NFTA_QUOTA_BYTES,
 999         NFTA_QUOTA_FLAGS,
1000         NFTA_QUOTA_PAD,
1001         NFTA_QUOTA_CONSUMED,
1002         __NFTA_QUOTA_MAX
1003 };
1004 #define NFTA_QUOTA_MAX          (__NFTA_QUOTA_MAX - 1)
1005
1006 /**
1007  * enum nft_reject_types - nf_tables reject expression reject types
1008  *
1009  * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
1010  * @NFT_REJECT_TCP_RST: reject using TCP RST
1011  * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
1012  */
1013 enum nft_reject_types {
1014         NFT_REJECT_ICMP_UNREACH,
1015         NFT_REJECT_TCP_RST,
1016         NFT_REJECT_ICMPX_UNREACH,
1017 };
1018
1019 /**
1020  * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1021  *
1022  * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1023  * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1024  * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1025  * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1026  *
1027  * These codes are mapped to real ICMP and ICMPv6 codes.
1028  */
1029 enum nft_reject_inet_code {
1030         NFT_REJECT_ICMPX_NO_ROUTE       = 0,
1031         NFT_REJECT_ICMPX_PORT_UNREACH,
1032         NFT_REJECT_ICMPX_HOST_UNREACH,
1033         NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
1034         __NFT_REJECT_ICMPX_MAX
1035 };
1036 #define NFT_REJECT_ICMPX_MAX    (__NFT_REJECT_ICMPX_MAX - 1)
1037
1038 /**
1039  * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1040  *
1041  * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1042  * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1043  */
1044 enum nft_reject_attributes {
1045         NFTA_REJECT_UNSPEC,
1046         NFTA_REJECT_TYPE,
1047         NFTA_REJECT_ICMP_CODE,
1048         __NFTA_REJECT_MAX
1049 };
1050 #define NFTA_REJECT_MAX         (__NFTA_REJECT_MAX - 1)
1051
1052 /**
1053  * enum nft_nat_types - nf_tables nat expression NAT types
1054  *
1055  * @NFT_NAT_SNAT: source NAT
1056  * @NFT_NAT_DNAT: destination NAT
1057  */
1058 enum nft_nat_types {
1059         NFT_NAT_SNAT,
1060         NFT_NAT_DNAT,
1061 };
1062
1063 /**
1064  * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1065  *
1066  * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1067  * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1068  * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1069  * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1070  * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1071  * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1072  * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1073  */
1074 enum nft_nat_attributes {
1075         NFTA_NAT_UNSPEC,
1076         NFTA_NAT_TYPE,
1077         NFTA_NAT_FAMILY,
1078         NFTA_NAT_REG_ADDR_MIN,
1079         NFTA_NAT_REG_ADDR_MAX,
1080         NFTA_NAT_REG_PROTO_MIN,
1081         NFTA_NAT_REG_PROTO_MAX,
1082         NFTA_NAT_FLAGS,
1083         __NFTA_NAT_MAX
1084 };
1085 #define NFTA_NAT_MAX            (__NFTA_NAT_MAX - 1)
1086
1087 /**
1088  * enum nft_masq_attributes - nf_tables masquerade expression attributes
1089  *
1090  * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1091  * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1092  * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1093  */
1094 enum nft_masq_attributes {
1095         NFTA_MASQ_UNSPEC,
1096         NFTA_MASQ_FLAGS,
1097         NFTA_MASQ_REG_PROTO_MIN,
1098         NFTA_MASQ_REG_PROTO_MAX,
1099         __NFTA_MASQ_MAX
1100 };
1101 #define NFTA_MASQ_MAX           (__NFTA_MASQ_MAX - 1)
1102
1103 /**
1104  * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1105  *
1106  * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1107  * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1108  * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1109  */
1110 enum nft_redir_attributes {
1111         NFTA_REDIR_UNSPEC,
1112         NFTA_REDIR_REG_PROTO_MIN,
1113         NFTA_REDIR_REG_PROTO_MAX,
1114         NFTA_REDIR_FLAGS,
1115         __NFTA_REDIR_MAX
1116 };
1117 #define NFTA_REDIR_MAX          (__NFTA_REDIR_MAX - 1)
1118
1119 /**
1120  * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1121  *
1122  * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1123  * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1124  */
1125 enum nft_dup_attributes {
1126         NFTA_DUP_UNSPEC,
1127         NFTA_DUP_SREG_ADDR,
1128         NFTA_DUP_SREG_DEV,
1129         __NFTA_DUP_MAX
1130 };
1131 #define NFTA_DUP_MAX            (__NFTA_DUP_MAX - 1)
1132
1133 /**
1134  * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1135  *
1136  * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1137  */
1138 enum nft_fwd_attributes {
1139         NFTA_FWD_UNSPEC,
1140         NFTA_FWD_SREG_DEV,
1141         __NFTA_FWD_MAX
1142 };
1143 #define NFTA_FWD_MAX    (__NFTA_FWD_MAX - 1)
1144
1145 /**
1146  * enum nft_objref_attributes - nf_tables stateful object expression netlink attributes
1147  *
1148  * @NFTA_OBJREF_IMM_TYPE: object type for immediate reference (NLA_U32: nft_register)
1149  * @NFTA_OBJREF_IMM_NAME: object name for immediate reference (NLA_STRING)
1150  */
1151 enum nft_objref_attributes {
1152         NFTA_OBJREF_UNSPEC,
1153         NFTA_OBJREF_IMM_TYPE,
1154         NFTA_OBJREF_IMM_NAME,
1155         __NFTA_OBJREF_MAX
1156 };
1157 #define NFTA_OBJREF_MAX (__NFTA_OBJREF_MAX - 1)
1158
1159 /**
1160  * enum nft_gen_attributes - nf_tables ruleset generation attributes
1161  *
1162  * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1163  */
1164 enum nft_gen_attributes {
1165         NFTA_GEN_UNSPEC,
1166         NFTA_GEN_ID,
1167         __NFTA_GEN_MAX
1168 };
1169 #define NFTA_GEN_MAX            (__NFTA_GEN_MAX - 1)
1170
1171 /*
1172  * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1173  *
1174  * @NFTA_FIB_DREG: destination register (NLA_U32)
1175  * @NFTA_FIB_RESULT: desired result (NLA_U32)
1176  * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1177  *
1178  * The FIB expression performs a route lookup according
1179  * to the packet data.
1180  */
1181 enum nft_fib_attributes {
1182         NFTA_FIB_UNSPEC,
1183         NFTA_FIB_DREG,
1184         NFTA_FIB_RESULT,
1185         NFTA_FIB_FLAGS,
1186         __NFTA_FIB_MAX
1187 };
1188 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1189
1190 enum nft_fib_result {
1191         NFT_FIB_RESULT_UNSPEC,
1192         NFT_FIB_RESULT_OIF,
1193         NFT_FIB_RESULT_OIFNAME,
1194         NFT_FIB_RESULT_ADDRTYPE,
1195         __NFT_FIB_RESULT_MAX
1196 };
1197 #define NFT_FIB_RESULT_MAX      (__NFT_FIB_RESULT_MAX - 1)
1198
1199 enum nft_fib_flags {
1200         NFTA_FIB_F_SADDR        = 1 << 0,       /* look up src */
1201         NFTA_FIB_F_DADDR        = 1 << 1,       /* look up dst */
1202         NFTA_FIB_F_MARK         = 1 << 2,       /* use skb->mark */
1203         NFTA_FIB_F_IIF          = 1 << 3,       /* restrict to iif */
1204         NFTA_FIB_F_OIF          = 1 << 4,       /* restrict to oif */
1205 };
1206
1207 #define NFT_OBJECT_UNSPEC       0
1208 #define NFT_OBJECT_COUNTER      1
1209 #define NFT_OBJECT_QUOTA        2
1210
1211 /**
1212  * enum nft_object_attributes - nf_tables stateful object netlink attributes
1213  *
1214  * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
1215  * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
1216  * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
1217  * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
1218  * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
1219  */
1220 enum nft_object_attributes {
1221         NFTA_OBJ_UNSPEC,
1222         NFTA_OBJ_TABLE,
1223         NFTA_OBJ_NAME,
1224         NFTA_OBJ_TYPE,
1225         NFTA_OBJ_DATA,
1226         NFTA_OBJ_USE,
1227         __NFTA_OBJ_MAX
1228 };
1229 #define NFTA_OBJ_MAX            (__NFTA_OBJ_MAX - 1)
1230
1231 /**
1232  * enum nft_trace_attributes - nf_tables trace netlink attributes
1233  *
1234  * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1235  * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1236  * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1237  * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1238  * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1239  * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1240  * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1241  * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1242  * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1243  * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1244  * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1245  * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1246  * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1247  * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1248  * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1249  * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1250  */
1251 enum nft_trace_attributes {
1252         NFTA_TRACE_UNSPEC,
1253         NFTA_TRACE_TABLE,
1254         NFTA_TRACE_CHAIN,
1255         NFTA_TRACE_RULE_HANDLE,
1256         NFTA_TRACE_TYPE,
1257         NFTA_TRACE_VERDICT,
1258         NFTA_TRACE_ID,
1259         NFTA_TRACE_LL_HEADER,
1260         NFTA_TRACE_NETWORK_HEADER,
1261         NFTA_TRACE_TRANSPORT_HEADER,
1262         NFTA_TRACE_IIF,
1263         NFTA_TRACE_IIFTYPE,
1264         NFTA_TRACE_OIF,
1265         NFTA_TRACE_OIFTYPE,
1266         NFTA_TRACE_MARK,
1267         NFTA_TRACE_NFPROTO,
1268         NFTA_TRACE_POLICY,
1269         NFTA_TRACE_PAD,
1270         __NFTA_TRACE_MAX
1271 };
1272 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1273
1274 enum nft_trace_types {
1275         NFT_TRACETYPE_UNSPEC,
1276         NFT_TRACETYPE_POLICY,
1277         NFT_TRACETYPE_RETURN,
1278         NFT_TRACETYPE_RULE,
1279         __NFT_TRACETYPE_MAX
1280 };
1281 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1282
1283 /**
1284  * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1285  *
1286  * @NFTA_NG_DREG: destination register (NLA_U32)
1287  * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1288  * @NFTA_NG_TYPE: operation type (NLA_U32)
1289  * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1290  */
1291 enum nft_ng_attributes {
1292         NFTA_NG_UNSPEC,
1293         NFTA_NG_DREG,
1294         NFTA_NG_MODULUS,
1295         NFTA_NG_TYPE,
1296         NFTA_NG_OFFSET,
1297         __NFTA_NG_MAX
1298 };
1299 #define NFTA_NG_MAX     (__NFTA_NG_MAX - 1)
1300
1301 enum nft_ng_types {
1302         NFT_NG_INCREMENTAL,
1303         NFT_NG_RANDOM,
1304         __NFT_NG_MAX
1305 };
1306 #define NFT_NG_MAX      (__NFT_NG_MAX - 1)
1307
1308 #endif /* _LINUX_NF_TABLES_H */