include/uapi/linux/netfilter/nf_tables.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _LINUX_NF_TABLES_H
   3 #define _LINUX_NF_TABLES_H
   4
   5 #define NFT_NAME_MAXLEN         256
   6 #define NFT_TABLE_MAXNAMELEN    NFT_NAME_MAXLEN
   7 #define NFT_CHAIN_MAXNAMELEN    NFT_NAME_MAXLEN
   8 #define NFT_SET_MAXNAMELEN      NFT_NAME_MAXLEN
   9 #define NFT_OBJ_MAXNAMELEN      NFT_NAME_MAXLEN
  10 #define NFT_USERDATA_MAXLEN     256
  11
  12 /**
  13  * enum nft_registers - nf_tables registers
  14  *
  15  * nf_tables used to have five registers: a verdict register and four data
  16  * registers of size 16. The data registers have been changed to 16 registers
  17  * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
  18  * map to areas of size 16, the 4 byte registers are addressed using
  19  * NFT_REG32_00 - NFT_REG32_15.
  20  */
  21 enum nft_registers {
  22         NFT_REG_VERDICT,
  23         NFT_REG_1,
  24         NFT_REG_2,
  25         NFT_REG_3,
  26         NFT_REG_4,
  27         __NFT_REG_MAX,
  28
  29         NFT_REG32_00    = 8,
  30         NFT_REG32_01,
  31         NFT_REG32_02,
  32         NFT_REG32_03,
  33         NFT_REG32_04,
  34         NFT_REG32_05,
  35         NFT_REG32_06,
  36         NFT_REG32_07,
  37         NFT_REG32_08,
  38         NFT_REG32_09,
  39         NFT_REG32_10,
  40         NFT_REG32_11,
  41         NFT_REG32_12,
  42         NFT_REG32_13,
  43         NFT_REG32_14,
  44         NFT_REG32_15,
  45 };
  46 #define NFT_REG_MAX     (__NFT_REG_MAX - 1)
  47
  48 #define NFT_REG_SIZE    16
  49 #define NFT_REG32_SIZE  4
  50
  51 /**
  52  * enum nft_verdicts - nf_tables internal verdicts
  53  *
  54  * @NFT_CONTINUE: continue evaluation of the current rule
  55  * @NFT_BREAK: terminate evaluation of the current rule
  56  * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
  57  * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
  58  * @NFT_RETURN: return to the topmost chain on the jump stack
  59  *
  60  * The nf_tables verdicts share their numeric space with the netfilter verdicts.
  61  */
  62 enum nft_verdicts {
  63         NFT_CONTINUE    = -1,
  64         NFT_BREAK       = -2,
  65         NFT_JUMP        = -3,
  66         NFT_GOTO        = -4,
  67         NFT_RETURN      = -5,
  68 };
  69
  70 /**
  71  * enum nf_tables_msg_types - nf_tables netlink message types
  72  *
  73  * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
  74  * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
  75  * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
  76  * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
  77  * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
  78  * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
  79  * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
  80  * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
  81  * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
  82  * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
  83  * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
  84  * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
  85  * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
  86  * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
  87  * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
  88  * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
  89  * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
  90  * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
  91  * @NFT_MSG_NEWOBJ: create a stateful object (enum nft_obj_attributes)
  92  * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
  93  * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
  94  * @NFT_MSG_GETOBJ_RESET: get and reset a stateful object (enum nft_obj_attributes)
  95  */
  96 enum nf_tables_msg_types {
  97         NFT_MSG_NEWTABLE,
  98         NFT_MSG_GETTABLE,
  99         NFT_MSG_DELTABLE,
 100         NFT_MSG_NEWCHAIN,
 101         NFT_MSG_GETCHAIN,
 102         NFT_MSG_DELCHAIN,
 103         NFT_MSG_NEWRULE,
 104         NFT_MSG_GETRULE,
 105         NFT_MSG_DELRULE,
 106         NFT_MSG_NEWSET,
 107         NFT_MSG_GETSET,
 108         NFT_MSG_DELSET,
 109         NFT_MSG_NEWSETELEM,
 110         NFT_MSG_GETSETELEM,
 111         NFT_MSG_DELSETELEM,
 112         NFT_MSG_NEWGEN,
 113         NFT_MSG_GETGEN,
 114         NFT_MSG_TRACE,
 115         NFT_MSG_NEWOBJ,
 116         NFT_MSG_GETOBJ,
 117         NFT_MSG_DELOBJ,
 118         NFT_MSG_GETOBJ_RESET,
 119         NFT_MSG_MAX,
 120 };
 121
 122 /**
 123  * enum nft_list_attributes - nf_tables generic list netlink attributes
 124  *
 125  * @NFTA_LIST_ELEM: list element (NLA_NESTED)
 126  */
 127 enum nft_list_attributes {
 128         NFTA_LIST_UNPEC,
 129         NFTA_LIST_ELEM,
 130         __NFTA_LIST_MAX
 131 };
 132 #define NFTA_LIST_MAX           (__NFTA_LIST_MAX - 1)
 133
 134 /**
 135  * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
 136  *
 137  * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
 138  * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
 139  * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
 140  */
 141 enum nft_hook_attributes {
 142         NFTA_HOOK_UNSPEC,
 143         NFTA_HOOK_HOOKNUM,
 144         NFTA_HOOK_PRIORITY,
 145         NFTA_HOOK_DEV,
 146         __NFTA_HOOK_MAX
 147 };
 148 #define NFTA_HOOK_MAX           (__NFTA_HOOK_MAX - 1)
 149
 150 /**
 151  * enum nft_table_flags - nf_tables table flags
 152  *
 153  * @NFT_TABLE_F_DORMANT: this table is not active
 154  */
 155 enum nft_table_flags {
 156         NFT_TABLE_F_DORMANT     = 0x1,
 157 };
 158
 159 /**
 160  * enum nft_table_attributes - nf_tables table netlink attributes
 161  *
 162  * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
 163  * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
 164  * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
 165  */
 166 enum nft_table_attributes {
 167         NFTA_TABLE_UNSPEC,
 168         NFTA_TABLE_NAME,
 169         NFTA_TABLE_FLAGS,
 170         NFTA_TABLE_USE,
 171         __NFTA_TABLE_MAX
 172 };
 173 #define NFTA_TABLE_MAX          (__NFTA_TABLE_MAX - 1)
 174
 175 /**
 176  * enum nft_chain_attributes - nf_tables chain netlink attributes
 177  *
 178  * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
 179  * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
 180  * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
 181  * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
 182  * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
 183  * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
 184  * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
 185  * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
 186  */
 187 enum nft_chain_attributes {
 188         NFTA_CHAIN_UNSPEC,
 189         NFTA_CHAIN_TABLE,
 190         NFTA_CHAIN_HANDLE,
 191         NFTA_CHAIN_NAME,
 192         NFTA_CHAIN_HOOK,
 193         NFTA_CHAIN_POLICY,
 194         NFTA_CHAIN_USE,
 195         NFTA_CHAIN_TYPE,
 196         NFTA_CHAIN_COUNTERS,
 197         NFTA_CHAIN_PAD,
 198         __NFTA_CHAIN_MAX
 199 };
 200 #define NFTA_CHAIN_MAX          (__NFTA_CHAIN_MAX - 1)
 201
 202 /**
 203  * enum nft_rule_attributes - nf_tables rule netlink attributes
 204  *
 205  * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
 206  * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
 207  * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
 208  * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
 209  * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
 210  * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
 211  * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
 212  * @NFTA_RULE_ID: uniquely identifies a rule in a transaction (NLA_U32)
 213  */
 214 enum nft_rule_attributes {
 215         NFTA_RULE_UNSPEC,
 216         NFTA_RULE_TABLE,
 217         NFTA_RULE_CHAIN,
 218         NFTA_RULE_HANDLE,
 219         NFTA_RULE_EXPRESSIONS,
 220         NFTA_RULE_COMPAT,
 221         NFTA_RULE_POSITION,
 222         NFTA_RULE_USERDATA,
 223         NFTA_RULE_PAD,
 224         NFTA_RULE_ID,
 225         __NFTA_RULE_MAX
 226 };
 227 #define NFTA_RULE_MAX           (__NFTA_RULE_MAX - 1)
 228
 229 /**
 230  * enum nft_rule_compat_flags - nf_tables rule compat flags
 231  *
 232  * @NFT_RULE_COMPAT_F_INV: invert the check result
 233  */
 234 enum nft_rule_compat_flags {
 235         NFT_RULE_COMPAT_F_INV   = (1 << 1),
 236         NFT_RULE_COMPAT_F_MASK  = NFT_RULE_COMPAT_F_INV,
 237 };
 238
 239 /**
 240  * enum nft_rule_compat_attributes - nf_tables rule compat attributes
 241  *
 242  * @NFTA_RULE_COMPAT_PROTO: numeric value of handled protocol (NLA_U32)
 243  * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
 244  */
 245 enum nft_rule_compat_attributes {
 246         NFTA_RULE_COMPAT_UNSPEC,
 247         NFTA_RULE_COMPAT_PROTO,
 248         NFTA_RULE_COMPAT_FLAGS,
 249         __NFTA_RULE_COMPAT_MAX
 250 };
 251 #define NFTA_RULE_COMPAT_MAX    (__NFTA_RULE_COMPAT_MAX - 1)
 252
 253 /**
 254  * enum nft_set_flags - nf_tables set flags
 255  *
 256  * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
 257  * @NFT_SET_CONSTANT: set contents may not change while bound
 258  * @NFT_SET_INTERVAL: set contains intervals
 259  * @NFT_SET_MAP: set is used as a dictionary
 260  * @NFT_SET_TIMEOUT: set uses timeouts
 261  * @NFT_SET_EVAL: set contains expressions for evaluation
 262  * @NFT_SET_OBJECT: set contains stateful objects
 263  */
 264 enum nft_set_flags {
 265         NFT_SET_ANONYMOUS               = 0x1,
 266         NFT_SET_CONSTANT                = 0x2,
 267         NFT_SET_INTERVAL                = 0x4,
 268         NFT_SET_MAP                     = 0x8,
 269         NFT_SET_TIMEOUT                 = 0x10,
 270         NFT_SET_EVAL                    = 0x20,
 271         NFT_SET_OBJECT                  = 0x40,
 272 };
 273
 274 /**
 275  * enum nft_set_policies - set selection policy
 276  *
 277  * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
 278  * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
 279  */
 280 enum nft_set_policies {
 281         NFT_SET_POL_PERFORMANCE,
 282         NFT_SET_POL_MEMORY,
 283 };
 284
 285 /**
 286  * enum nft_set_desc_attributes - set element description
 287  *
 288  * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
 289  */
 290 enum nft_set_desc_attributes {
 291         NFTA_SET_DESC_UNSPEC,
 292         NFTA_SET_DESC_SIZE,
 293         __NFTA_SET_DESC_MAX
 294 };
 295 #define NFTA_SET_DESC_MAX       (__NFTA_SET_DESC_MAX - 1)
 296
 297 /**
 298  * enum nft_set_attributes - nf_tables set netlink attributes
 299  *
 300  * @NFTA_SET_TABLE: table name (NLA_STRING)
 301  * @NFTA_SET_NAME: set name (NLA_STRING)
 302  * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
 303  * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
 304  * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
 305  * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
 306  * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
 307  * @NFTA_SET_POLICY: selection policy (NLA_U32)
 308  * @NFTA_SET_DESC: set description (NLA_NESTED)
 309  * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 310  * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
 311  * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
 312  * @NFTA_SET_USERDATA: user data (NLA_BINARY)
 313  * @NFTA_SET_OBJ_TYPE: stateful object type (NLA_U32: NFT_OBJECT_*)
 314  */
 315 enum nft_set_attributes {
 316         NFTA_SET_UNSPEC,
 317         NFTA_SET_TABLE,
 318         NFTA_SET_NAME,
 319         NFTA_SET_FLAGS,
 320         NFTA_SET_KEY_TYPE,
 321         NFTA_SET_KEY_LEN,
 322         NFTA_SET_DATA_TYPE,
 323         NFTA_SET_DATA_LEN,
 324         NFTA_SET_POLICY,
 325         NFTA_SET_DESC,
 326         NFTA_SET_ID,
 327         NFTA_SET_TIMEOUT,
 328         NFTA_SET_GC_INTERVAL,
 329         NFTA_SET_USERDATA,
 330         NFTA_SET_PAD,
 331         NFTA_SET_OBJ_TYPE,
 332         __NFTA_SET_MAX
 333 };
 334 #define NFTA_SET_MAX            (__NFTA_SET_MAX - 1)
 335
 336 /**
 337  * enum nft_set_elem_flags - nf_tables set element flags
 338  *
 339  * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
 340  */
 341 enum nft_set_elem_flags {
 342         NFT_SET_ELEM_INTERVAL_END       = 0x1,
 343 };
 344
 345 /**
 346  * enum nft_set_elem_attributes - nf_tables set element netlink attributes
 347  *
 348  * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
 349  * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
 350  * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
 351  * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
 352  * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
 353  * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
 354  * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 355  * @NFTA_SET_ELEM_OBJREF: stateful object reference (NLA_STRING)
 356  */
 357 enum nft_set_elem_attributes {
 358         NFTA_SET_ELEM_UNSPEC,
 359         NFTA_SET_ELEM_KEY,
 360         NFTA_SET_ELEM_DATA,
 361         NFTA_SET_ELEM_FLAGS,
 362         NFTA_SET_ELEM_TIMEOUT,
 363         NFTA_SET_ELEM_EXPIRATION,
 364         NFTA_SET_ELEM_USERDATA,
 365         NFTA_SET_ELEM_EXPR,
 366         NFTA_SET_ELEM_PAD,
 367         NFTA_SET_ELEM_OBJREF,
 368         __NFTA_SET_ELEM_MAX
 369 };
 370 #define NFTA_SET_ELEM_MAX       (__NFTA_SET_ELEM_MAX - 1)
 371
 372 /**
 373  * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
 374  *
 375  * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
 376  * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
 377  * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
 378  * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 379  */
 380 enum nft_set_elem_list_attributes {
 381         NFTA_SET_ELEM_LIST_UNSPEC,
 382         NFTA_SET_ELEM_LIST_TABLE,
 383         NFTA_SET_ELEM_LIST_SET,
 384         NFTA_SET_ELEM_LIST_ELEMENTS,
 385         NFTA_SET_ELEM_LIST_SET_ID,
 386         __NFTA_SET_ELEM_LIST_MAX
 387 };
 388 #define NFTA_SET_ELEM_LIST_MAX  (__NFTA_SET_ELEM_LIST_MAX - 1)
 389
 390 /**
 391  * enum nft_data_types - nf_tables data types
 392  *
 393  * @NFT_DATA_VALUE: generic data
 394  * @NFT_DATA_VERDICT: netfilter verdict
 395  *
 396  * The type of data is usually determined by the kernel directly and is not
 397  * explicitly specified by userspace. The only difference are sets, where
 398  * userspace specifies the key and mapping data types.
 399  *
 400  * The values 0xffffff00-0xffffffff are reserved for internally used types.
 401  * The remaining range can be freely used by userspace to encode types, all
 402  * values are equivalent to NFT_DATA_VALUE.
 403  */
 404 enum nft_data_types {
 405         NFT_DATA_VALUE,
 406         NFT_DATA_VERDICT        = 0xffffff00U,
 407 };
 408
 409 #define NFT_DATA_RESERVED_MASK  0xffffff00U
 410
 411 /**
 412  * enum nft_data_attributes - nf_tables data netlink attributes
 413  *
 414  * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
 415  * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
 416  */
 417 enum nft_data_attributes {
 418         NFTA_DATA_UNSPEC,
 419         NFTA_DATA_VALUE,
 420         NFTA_DATA_VERDICT,
 421         __NFTA_DATA_MAX
 422 };
 423 #define NFTA_DATA_MAX           (__NFTA_DATA_MAX - 1)
 424
 425 /* Maximum length of a value */
 426 #define NFT_DATA_VALUE_MAXLEN   64
 427
 428 /**
 429  * enum nft_verdict_attributes - nf_tables verdict netlink attributes
 430  *
 431  * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
 432  * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
 433  */
 434 enum nft_verdict_attributes {
 435         NFTA_VERDICT_UNSPEC,
 436         NFTA_VERDICT_CODE,
 437         NFTA_VERDICT_CHAIN,
 438         __NFTA_VERDICT_MAX
 439 };
 440 #define NFTA_VERDICT_MAX        (__NFTA_VERDICT_MAX - 1)
 441
 442 /**
 443  * enum nft_expr_attributes - nf_tables expression netlink attributes
 444  *
 445  * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
 446  * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
 447  */
 448 enum nft_expr_attributes {
 449         NFTA_EXPR_UNSPEC,
 450         NFTA_EXPR_NAME,
 451         NFTA_EXPR_DATA,
 452         __NFTA_EXPR_MAX
 453 };
 454 #define NFTA_EXPR_MAX           (__NFTA_EXPR_MAX - 1)
 455
 456 /**
 457  * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
 458  *
 459  * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
 460  * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
 461  */
 462 enum nft_immediate_attributes {
 463         NFTA_IMMEDIATE_UNSPEC,
 464         NFTA_IMMEDIATE_DREG,
 465         NFTA_IMMEDIATE_DATA,
 466         __NFTA_IMMEDIATE_MAX
 467 };
 468 #define NFTA_IMMEDIATE_MAX      (__NFTA_IMMEDIATE_MAX - 1)
 469
 470 /**
 471  * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
 472  *
 473  * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
 474  * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
 475  * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
 476  * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
 477  * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
 478  *
 479  * The bitwise expression performs the following operation:
 480  *
 481  * dreg = (sreg & mask) ^ xor
 482  *
 483  * which allow to express all bitwise operations:
 484  *
 485  *              mask    xor
 486  * NOT:         1       1
 487  * OR:          0       x
 488  * XOR:         1       x
 489  * AND:         x       0
 490  */
 491 enum nft_bitwise_attributes {
 492         NFTA_BITWISE_UNSPEC,
 493         NFTA_BITWISE_SREG,
 494         NFTA_BITWISE_DREG,
 495         NFTA_BITWISE_LEN,
 496         NFTA_BITWISE_MASK,
 497         NFTA_BITWISE_XOR,
 498         __NFTA_BITWISE_MAX
 499 };
 500 #define NFTA_BITWISE_MAX        (__NFTA_BITWISE_MAX - 1)
 501
 502 /**
 503  * enum nft_byteorder_ops - nf_tables byteorder operators
 504  *
 505  * @NFT_BYTEORDER_NTOH: network to host operator
 506  * @NFT_BYTEORDER_HTON: host to network operator
 507  */
 508 enum nft_byteorder_ops {
 509         NFT_BYTEORDER_NTOH,
 510         NFT_BYTEORDER_HTON,
 511 };
 512
 513 /**
 514  * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
 515  *
 516  * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
 517  * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
 518  * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
 519  * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
 520  * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
 521  */
 522 enum nft_byteorder_attributes {
 523         NFTA_BYTEORDER_UNSPEC,
 524         NFTA_BYTEORDER_SREG,
 525         NFTA_BYTEORDER_DREG,
 526         NFTA_BYTEORDER_OP,
 527         NFTA_BYTEORDER_LEN,
 528         NFTA_BYTEORDER_SIZE,
 529         __NFTA_BYTEORDER_MAX
 530 };
 531 #define NFTA_BYTEORDER_MAX      (__NFTA_BYTEORDER_MAX - 1)
 532
 533 /**
 534  * enum nft_cmp_ops - nf_tables relational operator
 535  *
 536  * @NFT_CMP_EQ: equal
 537  * @NFT_CMP_NEQ: not equal
 538  * @NFT_CMP_LT: less than
 539  * @NFT_CMP_LTE: less than or equal to
 540  * @NFT_CMP_GT: greater than
 541  * @NFT_CMP_GTE: greater than or equal to
 542  */
 543 enum nft_cmp_ops {
 544         NFT_CMP_EQ,
 545         NFT_CMP_NEQ,
 546         NFT_CMP_LT,
 547         NFT_CMP_LTE,
 548         NFT_CMP_GT,
 549         NFT_CMP_GTE,
 550 };
 551
 552 /**
 553  * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
 554  *
 555  * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
 556  * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
 557  * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
 558  */
 559 enum nft_cmp_attributes {
 560         NFTA_CMP_UNSPEC,
 561         NFTA_CMP_SREG,
 562         NFTA_CMP_OP,
 563         NFTA_CMP_DATA,
 564         __NFTA_CMP_MAX
 565 };
 566 #define NFTA_CMP_MAX            (__NFTA_CMP_MAX - 1)
 567
 568 /**
 569  * enum nft_range_ops - nf_tables range operator
 570  *
 571  * @NFT_RANGE_EQ: equal
 572  * @NFT_RANGE_NEQ: not equal
 573  */
 574 enum nft_range_ops {
 575         NFT_RANGE_EQ,
 576         NFT_RANGE_NEQ,
 577 };
 578
 579 /**
 580  * enum nft_range_attributes - nf_tables range expression netlink attributes
 581  *
 582  * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
 583  * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
 584  * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
 585  * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
 586  */
 587 enum nft_range_attributes {
 588         NFTA_RANGE_UNSPEC,
 589         NFTA_RANGE_SREG,
 590         NFTA_RANGE_OP,
 591         NFTA_RANGE_FROM_DATA,
 592         NFTA_RANGE_TO_DATA,
 593         __NFTA_RANGE_MAX
 594 };
 595 #define NFTA_RANGE_MAX          (__NFTA_RANGE_MAX - 1)
 596
 597 enum nft_lookup_flags {
 598         NFT_LOOKUP_F_INV = (1 << 0),
 599 };
 600
 601 /**
 602  * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
 603  *
 604  * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
 605  * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
 606  * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
 607  * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 608  * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
 609  */
 610 enum nft_lookup_attributes {
 611         NFTA_LOOKUP_UNSPEC,
 612         NFTA_LOOKUP_SET,
 613         NFTA_LOOKUP_SREG,
 614         NFTA_LOOKUP_DREG,
 615         NFTA_LOOKUP_SET_ID,
 616         NFTA_LOOKUP_FLAGS,
 617         __NFTA_LOOKUP_MAX
 618 };
 619 #define NFTA_LOOKUP_MAX         (__NFTA_LOOKUP_MAX - 1)
 620
 621 enum nft_dynset_ops {
 622         NFT_DYNSET_OP_ADD,
 623         NFT_DYNSET_OP_UPDATE,
 624 };
 625
 626 enum nft_dynset_flags {
 627         NFT_DYNSET_F_INV        = (1 << 0),
 628 };
 629
 630 /**
 631  * enum nft_dynset_attributes - dynset expression attributes
 632  *
 633  * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
 634  * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
 635  * @NFTA_DYNSET_OP: operation (NLA_U32)
 636  * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
 637  * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
 638  * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
 639  * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 640  * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
 641  */
 642 enum nft_dynset_attributes {
 643         NFTA_DYNSET_UNSPEC,
 644         NFTA_DYNSET_SET_NAME,
 645         NFTA_DYNSET_SET_ID,
 646         NFTA_DYNSET_OP,
 647         NFTA_DYNSET_SREG_KEY,
 648         NFTA_DYNSET_SREG_DATA,
 649         NFTA_DYNSET_TIMEOUT,
 650         NFTA_DYNSET_EXPR,
 651         NFTA_DYNSET_PAD,
 652         NFTA_DYNSET_FLAGS,
 653         __NFTA_DYNSET_MAX,
 654 };
 655 #define NFTA_DYNSET_MAX         (__NFTA_DYNSET_MAX - 1)
 656
 657 /**
 658  * enum nft_payload_bases - nf_tables payload expression offset bases
 659  *
 660  * @NFT_PAYLOAD_LL_HEADER: link layer header
 661  * @NFT_PAYLOAD_NETWORK_HEADER: network header
 662  * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
 663  */
 664 enum nft_payload_bases {
 665         NFT_PAYLOAD_LL_HEADER,
 666         NFT_PAYLOAD_NETWORK_HEADER,
 667         NFT_PAYLOAD_TRANSPORT_HEADER,
 668 };
 669
 670 /**
 671  * enum nft_payload_csum_types - nf_tables payload expression checksum types
 672  *
 673  * @NFT_PAYLOAD_CSUM_NONE: no checksumming
 674  * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
 675  */
 676 enum nft_payload_csum_types {
 677         NFT_PAYLOAD_CSUM_NONE,
 678         NFT_PAYLOAD_CSUM_INET,
 679 };
 680
 681 enum nft_payload_csum_flags {
 682         NFT_PAYLOAD_L4CSUM_PSEUDOHDR = (1 << 0),
 683 };
 684
 685 /**
 686  * enum nft_payload_attributes - nf_tables payload expression netlink attributes
 687  *
 688  * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
 689  * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
 690  * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
 691  * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
 692  * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
 693  * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
 694  * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
 695  * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
 696  */
 697 enum nft_payload_attributes {
 698         NFTA_PAYLOAD_UNSPEC,
 699         NFTA_PAYLOAD_DREG,
 700         NFTA_PAYLOAD_BASE,
 701         NFTA_PAYLOAD_OFFSET,
 702         NFTA_PAYLOAD_LEN,
 703         NFTA_PAYLOAD_SREG,
 704         NFTA_PAYLOAD_CSUM_TYPE,
 705         NFTA_PAYLOAD_CSUM_OFFSET,
 706         NFTA_PAYLOAD_CSUM_FLAGS,
 707         __NFTA_PAYLOAD_MAX
 708 };
 709 #define NFTA_PAYLOAD_MAX        (__NFTA_PAYLOAD_MAX - 1)
 710
 711 enum nft_exthdr_flags {
 712         NFT_EXTHDR_F_PRESENT = (1 << 0),
 713 };
 714
 715 /**
 716  * enum nft_exthdr_op - nf_tables match options
 717  *
 718  * @NFT_EXTHDR_OP_IPV6: match against ipv6 extension headers
 719  * @NFT_EXTHDR_OP_TCP: match against tcp options
 720  */
 721 enum nft_exthdr_op {
 722         NFT_EXTHDR_OP_IPV6,
 723         NFT_EXTHDR_OP_TCPOPT,
 724         __NFT_EXTHDR_OP_MAX
 725 };
 726 #define NFT_EXTHDR_OP_MAX       (__NFT_EXTHDR_OP_MAX - 1)
 727
 728 /**
 729  * enum nft_exthdr_attributes - nf_tables extension header expression netlink attributes
 730  *
 731  * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
 732  * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
 733  * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
 734  * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
 735  * @NFTA_EXTHDR_FLAGS: extension header flags (NLA_U32)
 736  * @NFTA_EXTHDR_OP: option match type (NLA_U32)
 737  * @NFTA_EXTHDR_SREG: option match type (NLA_U32)
 738  */
 739 enum nft_exthdr_attributes {
 740         NFTA_EXTHDR_UNSPEC,
 741         NFTA_EXTHDR_DREG,
 742         NFTA_EXTHDR_TYPE,
 743         NFTA_EXTHDR_OFFSET,
 744         NFTA_EXTHDR_LEN,
 745         NFTA_EXTHDR_FLAGS,
 746         NFTA_EXTHDR_OP,
 747         NFTA_EXTHDR_SREG,
 748         __NFTA_EXTHDR_MAX
 749 };
 750 #define NFTA_EXTHDR_MAX         (__NFTA_EXTHDR_MAX - 1)
 751
 752 /**
 753  * enum nft_meta_keys - nf_tables meta expression keys
 754  *
 755  * @NFT_META_LEN: packet length (skb->len)
 756  * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
 757  * @NFT_META_PRIORITY: packet priority (skb->priority)
 758  * @NFT_META_MARK: packet mark (skb->mark)
 759  * @NFT_META_IIF: packet input interface index (dev->ifindex)
 760  * @NFT_META_OIF: packet output interface index (dev->ifindex)
 761  * @NFT_META_IIFNAME: packet input interface name (dev->name)
 762  * @NFT_META_OIFNAME: packet output interface name (dev->name)
 763  * @NFT_META_IIFTYPE: packet input interface type (dev->type)
 764  * @NFT_META_OIFTYPE: packet output interface type (dev->type)
 765  * @NFT_META_SKUID: originating socket UID (fsuid)
 766  * @NFT_META_SKGID: originating socket GID (fsgid)
 767  * @NFT_META_NFTRACE: packet nftrace bit
 768  * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
 769  * @NFT_META_SECMARK: packet secmark (skb->secmark)
 770  * @NFT_META_NFPROTO: netfilter protocol
 771  * @NFT_META_L4PROTO: layer 4 protocol number
 772  * @NFT_META_BRI_IIFNAME: packet input bridge interface name
 773  * @NFT_META_BRI_OIFNAME: packet output bridge interface name
 774  * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
 775  * @NFT_META_CPU: cpu id through smp_processor_id()
 776  * @NFT_META_IIFGROUP: packet input interface group
 777  * @NFT_META_OIFGROUP: packet output interface group
 778  * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
 779  * @NFT_META_PRANDOM: a 32bit pseudo-random number
 780  */
 781 enum nft_meta_keys {
 782         NFT_META_LEN,
 783         NFT_META_PROTOCOL,
 784         NFT_META_PRIORITY,
 785         NFT_META_MARK,
 786         NFT_META_IIF,
 787         NFT_META_OIF,
 788         NFT_META_IIFNAME,
 789         NFT_META_OIFNAME,
 790         NFT_META_IIFTYPE,
 791         NFT_META_OIFTYPE,
 792         NFT_META_SKUID,
 793         NFT_META_SKGID,
 794         NFT_META_NFTRACE,
 795         NFT_META_RTCLASSID,
 796         NFT_META_SECMARK,
 797         NFT_META_NFPROTO,
 798         NFT_META_L4PROTO,
 799         NFT_META_BRI_IIFNAME,
 800         NFT_META_BRI_OIFNAME,
 801         NFT_META_PKTTYPE,
 802         NFT_META_CPU,
 803         NFT_META_IIFGROUP,
 804         NFT_META_OIFGROUP,
 805         NFT_META_CGROUP,
 806         NFT_META_PRANDOM,
 807 };
 808
 809 /**
 810  * enum nft_rt_keys - nf_tables routing expression keys
 811  *
 812  * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
 813  * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
 814  * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
 815  * @NFT_RT_TCPMSS: fetch current path tcp mss
 816  */
 817 enum nft_rt_keys {
 818         NFT_RT_CLASSID,
 819         NFT_RT_NEXTHOP4,
 820         NFT_RT_NEXTHOP6,
 821         NFT_RT_TCPMSS,
 822 };
 823
 824 /**
 825  * enum nft_hash_types - nf_tables hash expression types
 826  *
 827  * @NFT_HASH_JENKINS: Jenkins Hash
 828  * @NFT_HASH_SYM: Symmetric Hash
 829  */
 830 enum nft_hash_types {
 831         NFT_HASH_JENKINS,
 832         NFT_HASH_SYM,
 833 };
 834
 835 /**
 836  * enum nft_hash_attributes - nf_tables hash expression netlink attributes
 837  *
 838  * @NFTA_HASH_SREG: source register (NLA_U32)
 839  * @NFTA_HASH_DREG: destination register (NLA_U32)
 840  * @NFTA_HASH_LEN: source data length (NLA_U32)
 841  * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
 842  * @NFTA_HASH_SEED: seed value (NLA_U32)
 843  * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
 844  * @NFTA_HASH_TYPE: hash operation (NLA_U32: nft_hash_types)
 845  */
 846 enum nft_hash_attributes {
 847         NFTA_HASH_UNSPEC,
 848         NFTA_HASH_SREG,
 849         NFTA_HASH_DREG,
 850         NFTA_HASH_LEN,
 851         NFTA_HASH_MODULUS,
 852         NFTA_HASH_SEED,
 853         NFTA_HASH_OFFSET,
 854         NFTA_HASH_TYPE,
 855         __NFTA_HASH_MAX,
 856 };
 857 #define NFTA_HASH_MAX   (__NFTA_HASH_MAX - 1)
 858
 859 /**
 860  * enum nft_meta_attributes - nf_tables meta expression netlink attributes
 861  *
 862  * @NFTA_META_DREG: destination register (NLA_U32)
 863  * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
 864  * @NFTA_META_SREG: source register (NLA_U32)
 865  */
 866 enum nft_meta_attributes {
 867         NFTA_META_UNSPEC,
 868         NFTA_META_DREG,
 869         NFTA_META_KEY,
 870         NFTA_META_SREG,
 871         __NFTA_META_MAX
 872 };
 873 #define NFTA_META_MAX           (__NFTA_META_MAX - 1)
 874
 875 /**
 876  * enum nft_rt_attributes - nf_tables routing expression netlink attributes
 877  *
 878  * @NFTA_RT_DREG: destination register (NLA_U32)
 879  * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
 880  */
 881 enum nft_rt_attributes {
 882         NFTA_RT_UNSPEC,
 883         NFTA_RT_DREG,
 884         NFTA_RT_KEY,
 885         __NFTA_RT_MAX
 886 };
 887 #define NFTA_RT_MAX             (__NFTA_RT_MAX - 1)
 888
 889 /**
 890  * enum nft_ct_keys - nf_tables ct expression keys
 891  *
 892  * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
 893  * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
 894  * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
 895  * @NFT_CT_MARK: conntrack mark value
 896  * @NFT_CT_SECMARK: conntrack secmark value
 897  * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
 898  * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
 899  * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
 900  * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
 901  * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
 902  * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
 903  * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
 904  * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
 905  * @NFT_CT_LABELS: conntrack labels
 906  * @NFT_CT_PKTS: conntrack packets
 907  * @NFT_CT_BYTES: conntrack bytes
 908  * @NFT_CT_AVGPKT: conntrack average bytes per packet
 909  * @NFT_CT_ZONE: conntrack zone
 910  * @NFT_CT_EVENTMASK: ctnetlink events to be generated for this conntrack
 911  */
 912 enum nft_ct_keys {
 913         NFT_CT_STATE,
 914         NFT_CT_DIRECTION,
 915         NFT_CT_STATUS,
 916         NFT_CT_MARK,
 917         NFT_CT_SECMARK,
 918         NFT_CT_EXPIRATION,
 919         NFT_CT_HELPER,
 920         NFT_CT_L3PROTOCOL,
 921         NFT_CT_SRC,
 922         NFT_CT_DST,
 923         NFT_CT_PROTOCOL,
 924         NFT_CT_PROTO_SRC,
 925         NFT_CT_PROTO_DST,
 926         NFT_CT_LABELS,
 927         NFT_CT_PKTS,
 928         NFT_CT_BYTES,
 929         NFT_CT_AVGPKT,
 930         NFT_CT_ZONE,
 931         NFT_CT_EVENTMASK,
 932 };
 933
 934 /**
 935  * enum nft_ct_attributes - nf_tables ct expression netlink attributes
 936  *
 937  * @NFTA_CT_DREG: destination register (NLA_U32)
 938  * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
 939  * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
 940  * @NFTA_CT_SREG: source register (NLA_U32)
 941  */
 942 enum nft_ct_attributes {
 943         NFTA_CT_UNSPEC,
 944         NFTA_CT_DREG,
 945         NFTA_CT_KEY,
 946         NFTA_CT_DIRECTION,
 947         NFTA_CT_SREG,
 948         __NFTA_CT_MAX
 949 };
 950 #define NFTA_CT_MAX             (__NFTA_CT_MAX - 1)
 951
 952 enum nft_limit_type {
 953         NFT_LIMIT_PKTS,
 954         NFT_LIMIT_PKT_BYTES
 955 };
 956
 957 enum nft_limit_flags {
 958         NFT_LIMIT_F_INV = (1 << 0),
 959 };
 960
 961 /**
 962  * enum nft_limit_attributes - nf_tables limit expression netlink attributes
 963  *
 964  * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
 965  * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
 966  * @NFTA_LIMIT_BURST: burst (NLA_U32)
 967  * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
 968  * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
 969  */
 970 enum nft_limit_attributes {
 971         NFTA_LIMIT_UNSPEC,
 972         NFTA_LIMIT_RATE,
 973         NFTA_LIMIT_UNIT,
 974         NFTA_LIMIT_BURST,
 975         NFTA_LIMIT_TYPE,
 976         NFTA_LIMIT_FLAGS,
 977         NFTA_LIMIT_PAD,
 978         __NFTA_LIMIT_MAX
 979 };
 980 #define NFTA_LIMIT_MAX          (__NFTA_LIMIT_MAX - 1)
 981
 982 /**
 983  * enum nft_counter_attributes - nf_tables counter expression netlink attributes
 984  *
 985  * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
 986  * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
 987  */
 988 enum nft_counter_attributes {
 989         NFTA_COUNTER_UNSPEC,
 990         NFTA_COUNTER_BYTES,
 991         NFTA_COUNTER_PACKETS,
 992         NFTA_COUNTER_PAD,
 993         __NFTA_COUNTER_MAX
 994 };
 995 #define NFTA_COUNTER_MAX        (__NFTA_COUNTER_MAX - 1)
 996
 997 /**
 998  * enum nft_log_attributes - nf_tables log expression netlink attributes
 999  *
1000  * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
1001  * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
1002  * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
1003  * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
1004  * @NFTA_LOG_LEVEL: log level (NLA_U32)
1005  * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
1006  */
1007 enum nft_log_attributes {
1008         NFTA_LOG_UNSPEC,
1009         NFTA_LOG_GROUP,
1010         NFTA_LOG_PREFIX,
1011         NFTA_LOG_SNAPLEN,
1012         NFTA_LOG_QTHRESHOLD,
1013         NFTA_LOG_LEVEL,
1014         NFTA_LOG_FLAGS,
1015         __NFTA_LOG_MAX
1016 };
1017 #define NFTA_LOG_MAX            (__NFTA_LOG_MAX - 1)
1018
1019 /**
1020  * enum nft_queue_attributes - nf_tables queue expression netlink attributes
1021  *
1022  * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
1023  * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
1024  * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
1025  * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
1026  */
1027 enum nft_queue_attributes {
1028         NFTA_QUEUE_UNSPEC,
1029         NFTA_QUEUE_NUM,
1030         NFTA_QUEUE_TOTAL,
1031         NFTA_QUEUE_FLAGS,
1032         NFTA_QUEUE_SREG_QNUM,
1033         __NFTA_QUEUE_MAX
1034 };
1035 #define NFTA_QUEUE_MAX          (__NFTA_QUEUE_MAX - 1)
1036
1037 #define NFT_QUEUE_FLAG_BYPASS           0x01 /* for compatibility with v2 */
1038 #define NFT_QUEUE_FLAG_CPU_FANOUT       0x02 /* use current CPU (no hashing) */
1039 #define NFT_QUEUE_FLAG_MASK             0x03
1040
1041 enum nft_quota_flags {
1042         NFT_QUOTA_F_INV         = (1 << 0),
1043         NFT_QUOTA_F_DEPLETED    = (1 << 1),
1044 };
1045
1046 /**
1047  * enum nft_quota_attributes - nf_tables quota expression netlink attributes
1048  *
1049  * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
1050  * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
1051  * @NFTA_QUOTA_CONSUMED: quota already consumed in bytes (NLA_U64)
1052  */
1053 enum nft_quota_attributes {
1054         NFTA_QUOTA_UNSPEC,
1055         NFTA_QUOTA_BYTES,
1056         NFTA_QUOTA_FLAGS,
1057         NFTA_QUOTA_PAD,
1058         NFTA_QUOTA_CONSUMED,
1059         __NFTA_QUOTA_MAX
1060 };
1061 #define NFTA_QUOTA_MAX          (__NFTA_QUOTA_MAX - 1)
1062
1063 /**
1064  * enum nft_reject_types - nf_tables reject expression reject types
1065  *
1066  * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
1067  * @NFT_REJECT_TCP_RST: reject using TCP RST
1068  * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
1069  */
1070 enum nft_reject_types {
1071         NFT_REJECT_ICMP_UNREACH,
1072         NFT_REJECT_TCP_RST,
1073         NFT_REJECT_ICMPX_UNREACH,
1074 };
1075
1076 /**
1077  * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1078  *
1079  * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1080  * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1081  * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1082  * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1083  *
1084  * These codes are mapped to real ICMP and ICMPv6 codes.
1085  */
1086 enum nft_reject_inet_code {
1087         NFT_REJECT_ICMPX_NO_ROUTE       = 0,
1088         NFT_REJECT_ICMPX_PORT_UNREACH,
1089         NFT_REJECT_ICMPX_HOST_UNREACH,
1090         NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
1091         __NFT_REJECT_ICMPX_MAX
1092 };
1093 #define NFT_REJECT_ICMPX_MAX    (__NFT_REJECT_ICMPX_MAX - 1)
1094
1095 /**
1096  * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1097  *
1098  * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1099  * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1100  */
1101 enum nft_reject_attributes {
1102         NFTA_REJECT_UNSPEC,
1103         NFTA_REJECT_TYPE,
1104         NFTA_REJECT_ICMP_CODE,
1105         __NFTA_REJECT_MAX
1106 };
1107 #define NFTA_REJECT_MAX         (__NFTA_REJECT_MAX - 1)
1108
1109 /**
1110  * enum nft_nat_types - nf_tables nat expression NAT types
1111  *
1112  * @NFT_NAT_SNAT: source NAT
1113  * @NFT_NAT_DNAT: destination NAT
1114  */
1115 enum nft_nat_types {
1116         NFT_NAT_SNAT,
1117         NFT_NAT_DNAT,
1118 };
1119
1120 /**
1121  * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1122  *
1123  * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1124  * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1125  * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1126  * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1127  * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1128  * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1129  * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1130  */
1131 enum nft_nat_attributes {
1132         NFTA_NAT_UNSPEC,
1133         NFTA_NAT_TYPE,
1134         NFTA_NAT_FAMILY,
1135         NFTA_NAT_REG_ADDR_MIN,
1136         NFTA_NAT_REG_ADDR_MAX,
1137         NFTA_NAT_REG_PROTO_MIN,
1138         NFTA_NAT_REG_PROTO_MAX,
1139         NFTA_NAT_FLAGS,
1140         __NFTA_NAT_MAX
1141 };
1142 #define NFTA_NAT_MAX            (__NFTA_NAT_MAX - 1)
1143
1144 /**
1145  * enum nft_masq_attributes - nf_tables masquerade expression attributes
1146  *
1147  * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1148  * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1149  * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1150  */
1151 enum nft_masq_attributes {
1152         NFTA_MASQ_UNSPEC,
1153         NFTA_MASQ_FLAGS,
1154         NFTA_MASQ_REG_PROTO_MIN,
1155         NFTA_MASQ_REG_PROTO_MAX,
1156         __NFTA_MASQ_MAX
1157 };
1158 #define NFTA_MASQ_MAX           (__NFTA_MASQ_MAX - 1)
1159
1160 /**
1161  * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1162  *
1163  * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1164  * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1165  * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1166  */
1167 enum nft_redir_attributes {
1168         NFTA_REDIR_UNSPEC,
1169         NFTA_REDIR_REG_PROTO_MIN,
1170         NFTA_REDIR_REG_PROTO_MAX,
1171         NFTA_REDIR_FLAGS,
1172         __NFTA_REDIR_MAX
1173 };
1174 #define NFTA_REDIR_MAX          (__NFTA_REDIR_MAX - 1)
1175
1176 /**
1177  * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1178  *
1179  * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1180  * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1181  */
1182 enum nft_dup_attributes {
1183         NFTA_DUP_UNSPEC,
1184         NFTA_DUP_SREG_ADDR,
1185         NFTA_DUP_SREG_DEV,
1186         __NFTA_DUP_MAX
1187 };
1188 #define NFTA_DUP_MAX            (__NFTA_DUP_MAX - 1)
1189
1190 /**
1191  * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1192  *
1193  * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1194  */
1195 enum nft_fwd_attributes {
1196         NFTA_FWD_UNSPEC,
1197         NFTA_FWD_SREG_DEV,
1198         __NFTA_FWD_MAX
1199 };
1200 #define NFTA_FWD_MAX    (__NFTA_FWD_MAX - 1)
1201
1202 /**
1203  * enum nft_objref_attributes - nf_tables stateful object expression netlink attributes
1204  *
1205  * @NFTA_OBJREF_IMM_TYPE: object type for immediate reference (NLA_U32: nft_register)
1206  * @NFTA_OBJREF_IMM_NAME: object name for immediate reference (NLA_STRING)
1207  * @NFTA_OBJREF_SET_SREG: source register of the data to look for (NLA_U32: nft_registers)
1208  * @NFTA_OBJREF_SET_NAME: name of the set where to look for (NLA_STRING)
1209  * @NFTA_OBJREF_SET_ID: id of the set where to look for in this transaction (NLA_U32)
1210  */
1211 enum nft_objref_attributes {
1212         NFTA_OBJREF_UNSPEC,
1213         NFTA_OBJREF_IMM_TYPE,
1214         NFTA_OBJREF_IMM_NAME,
1215         NFTA_OBJREF_SET_SREG,
1216         NFTA_OBJREF_SET_NAME,
1217         NFTA_OBJREF_SET_ID,
1218         __NFTA_OBJREF_MAX
1219 };
1220 #define NFTA_OBJREF_MAX (__NFTA_OBJREF_MAX - 1)
1221
1222 /**
1223  * enum nft_gen_attributes - nf_tables ruleset generation attributes
1224  *
1225  * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1226  */
1227 enum nft_gen_attributes {
1228         NFTA_GEN_UNSPEC,
1229         NFTA_GEN_ID,
1230         NFTA_GEN_PROC_PID,
1231         NFTA_GEN_PROC_NAME,
1232         __NFTA_GEN_MAX
1233 };
1234 #define NFTA_GEN_MAX            (__NFTA_GEN_MAX - 1)
1235
1236 /*
1237  * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1238  *
1239  * @NFTA_FIB_DREG: destination register (NLA_U32)
1240  * @NFTA_FIB_RESULT: desired result (NLA_U32)
1241  * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1242  *
1243  * The FIB expression performs a route lookup according
1244  * to the packet data.
1245  */
1246 enum nft_fib_attributes {
1247         NFTA_FIB_UNSPEC,
1248         NFTA_FIB_DREG,
1249         NFTA_FIB_RESULT,
1250         NFTA_FIB_FLAGS,
1251         __NFTA_FIB_MAX
1252 };
1253 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1254
1255 enum nft_fib_result {
1256         NFT_FIB_RESULT_UNSPEC,
1257         NFT_FIB_RESULT_OIF,
1258         NFT_FIB_RESULT_OIFNAME,
1259         NFT_FIB_RESULT_ADDRTYPE,
1260         __NFT_FIB_RESULT_MAX
1261 };
1262 #define NFT_FIB_RESULT_MAX      (__NFT_FIB_RESULT_MAX - 1)
1263
1264 enum nft_fib_flags {
1265         NFTA_FIB_F_SADDR        = 1 << 0,       /* look up src */
1266         NFTA_FIB_F_DADDR        = 1 << 1,       /* look up dst */
1267         NFTA_FIB_F_MARK         = 1 << 2,       /* use skb->mark */
1268         NFTA_FIB_F_IIF          = 1 << 3,       /* restrict to iif */
1269         NFTA_FIB_F_OIF          = 1 << 4,       /* restrict to oif */
1270         NFTA_FIB_F_PRESENT      = 1 << 5,       /* check existence only */
1271 };
1272
1273 enum nft_ct_helper_attributes {
1274         NFTA_CT_HELPER_UNSPEC,
1275         NFTA_CT_HELPER_NAME,
1276         NFTA_CT_HELPER_L3PROTO,
1277         NFTA_CT_HELPER_L4PROTO,
1278         __NFTA_CT_HELPER_MAX,
1279 };
1280 #define NFTA_CT_HELPER_MAX      (__NFTA_CT_HELPER_MAX - 1)
1281
1282 #define NFT_OBJECT_UNSPEC       0
1283 #define NFT_OBJECT_COUNTER      1
1284 #define NFT_OBJECT_QUOTA        2
1285 #define NFT_OBJECT_CT_HELPER    3
1286 #define NFT_OBJECT_LIMIT        4
1287 #define __NFT_OBJECT_MAX        5
1288 #define NFT_OBJECT_MAX          (__NFT_OBJECT_MAX - 1)
1289
1290 /**
1291  * enum nft_object_attributes - nf_tables stateful object netlink attributes
1292  *
1293  * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
1294  * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
1295  * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
1296  * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
1297  * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
1298  */
1299 enum nft_object_attributes {
1300         NFTA_OBJ_UNSPEC,
1301         NFTA_OBJ_TABLE,
1302         NFTA_OBJ_NAME,
1303         NFTA_OBJ_TYPE,
1304         NFTA_OBJ_DATA,
1305         NFTA_OBJ_USE,
1306         __NFTA_OBJ_MAX
1307 };
1308 #define NFTA_OBJ_MAX            (__NFTA_OBJ_MAX - 1)
1309
1310 /**
1311  * enum nft_trace_attributes - nf_tables trace netlink attributes
1312  *
1313  * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1314  * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1315  * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1316  * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1317  * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1318  * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1319  * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1320  * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1321  * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1322  * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1323  * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1324  * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1325  * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1326  * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1327  * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1328  * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1329  */
1330 enum nft_trace_attributes {
1331         NFTA_TRACE_UNSPEC,
1332         NFTA_TRACE_TABLE,
1333         NFTA_TRACE_CHAIN,
1334         NFTA_TRACE_RULE_HANDLE,
1335         NFTA_TRACE_TYPE,
1336         NFTA_TRACE_VERDICT,
1337         NFTA_TRACE_ID,
1338         NFTA_TRACE_LL_HEADER,
1339         NFTA_TRACE_NETWORK_HEADER,
1340         NFTA_TRACE_TRANSPORT_HEADER,
1341         NFTA_TRACE_IIF,
1342         NFTA_TRACE_IIFTYPE,
1343         NFTA_TRACE_OIF,
1344         NFTA_TRACE_OIFTYPE,
1345         NFTA_TRACE_MARK,
1346         NFTA_TRACE_NFPROTO,
1347         NFTA_TRACE_POLICY,
1348         NFTA_TRACE_PAD,
1349         __NFTA_TRACE_MAX
1350 };
1351 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1352
1353 enum nft_trace_types {
1354         NFT_TRACETYPE_UNSPEC,
1355         NFT_TRACETYPE_POLICY,
1356         NFT_TRACETYPE_RETURN,
1357         NFT_TRACETYPE_RULE,
1358         __NFT_TRACETYPE_MAX
1359 };
1360 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1361
1362 /**
1363  * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1364  *
1365  * @NFTA_NG_DREG: destination register (NLA_U32)
1366  * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1367  * @NFTA_NG_TYPE: operation type (NLA_U32)
1368  * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1369  */
1370 enum nft_ng_attributes {
1371         NFTA_NG_UNSPEC,
1372         NFTA_NG_DREG,
1373         NFTA_NG_MODULUS,
1374         NFTA_NG_TYPE,
1375         NFTA_NG_OFFSET,
1376         __NFTA_NG_MAX
1377 };
1378 #define NFTA_NG_MAX     (__NFTA_NG_MAX - 1)
1379
1380 enum nft_ng_types {
1381         NFT_NG_INCREMENTAL,
1382         NFT_NG_RANDOM,
1383         __NFT_NG_MAX
1384 };
1385 #define NFT_NG_MAX      (__NFT_NG_MAX - 1)
1386
1387 #endif /* _LINUX_NF_TABLES_H */