include/uapi/linux/netfilter/nf_tables.h

   1 #ifndef _LINUX_NF_TABLES_H
   2 #define _LINUX_NF_TABLES_H
   3
   4 #define NFT_CHAIN_MAXNAMELEN 32
   5
   6 enum nft_registers {
   7         NFT_REG_VERDICT,
   8         NFT_REG_1,
   9         NFT_REG_2,
  10         NFT_REG_3,
  11         NFT_REG_4,
  12         __NFT_REG_MAX
  13 };
  14 #define NFT_REG_MAX     (__NFT_REG_MAX - 1)
  15
  16 /**
  17  * enum nft_verdicts - nf_tables internal verdicts
  18  *
  19  * @NFT_CONTINUE: continue evaluation of the current rule
  20  * @NFT_BREAK: terminate evaluation of the current rule
  21  * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
  22  * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
  23  * @NFT_RETURN: return to the topmost chain on the jump stack
  24  *
  25  * The nf_tables verdicts share their numeric space with the netfilter verdicts.
  26  */
  27 enum nft_verdicts {
  28         NFT_CONTINUE    = -1,
  29         NFT_BREAK       = -2,
  30         NFT_JUMP        = -3,
  31         NFT_GOTO        = -4,
  32         NFT_RETURN      = -5,
  33 };
  34
  35 /**
  36  * enum nf_tables_msg_types - nf_tables netlink message types
  37  *
  38  * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
  39  * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
  40  * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
  41  * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
  42  * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
  43  * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
  44  * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
  45  * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
  46  * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
  47  * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
  48  * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
  49  * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
  50  * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
  51  * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
  52  * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
  53  */
  54 enum nf_tables_msg_types {
  55         NFT_MSG_NEWTABLE,
  56         NFT_MSG_GETTABLE,
  57         NFT_MSG_DELTABLE,
  58         NFT_MSG_NEWCHAIN,
  59         NFT_MSG_GETCHAIN,
  60         NFT_MSG_DELCHAIN,
  61         NFT_MSG_NEWRULE,
  62         NFT_MSG_GETRULE,
  63         NFT_MSG_DELRULE,
  64         NFT_MSG_NEWSET,
  65         NFT_MSG_GETSET,
  66         NFT_MSG_DELSET,
  67         NFT_MSG_NEWSETELEM,
  68         NFT_MSG_GETSETELEM,
  69         NFT_MSG_DELSETELEM,
  70         NFT_MSG_MAX,
  71 };
  72
  73 /**
  74  * enum nft_list_attributes - nf_tables generic list netlink attributes
  75  *
  76  * @NFTA_LIST_ELEM: list element (NLA_NESTED)
  77  */
  78 enum nft_list_attributes {
  79         NFTA_LIST_UNPEC,
  80         NFTA_LIST_ELEM,
  81         __NFTA_LIST_MAX
  82 };
  83 #define NFTA_LIST_MAX           (__NFTA_LIST_MAX - 1)
  84
  85 /**
  86  * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
  87  *
  88  * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
  89  * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
  90  */
  91 enum nft_hook_attributes {
  92         NFTA_HOOK_UNSPEC,
  93         NFTA_HOOK_HOOKNUM,
  94         NFTA_HOOK_PRIORITY,
  95         __NFTA_HOOK_MAX
  96 };
  97 #define NFTA_HOOK_MAX           (__NFTA_HOOK_MAX - 1)
  98
  99 /**
 100  * enum nft_table_attributes - nf_tables table netlink attributes
 101  *
 102  * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
 103  */
 104 enum nft_table_attributes {
 105         NFTA_TABLE_UNSPEC,
 106         NFTA_TABLE_NAME,
 107         __NFTA_TABLE_MAX
 108 };
 109 #define NFTA_TABLE_MAX          (__NFTA_TABLE_MAX - 1)
 110
 111 /**
 112  * enum nft_chain_attributes - nf_tables chain netlink attributes
 113  *
 114  * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
 115  * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
 116  * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
 117  * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
 118  * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
 119  * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
 120  * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
 121  * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
 122  */
 123 enum nft_chain_attributes {
 124         NFTA_CHAIN_UNSPEC,
 125         NFTA_CHAIN_TABLE,
 126         NFTA_CHAIN_HANDLE,
 127         NFTA_CHAIN_NAME,
 128         NFTA_CHAIN_HOOK,
 129         NFTA_CHAIN_POLICY,
 130         NFTA_CHAIN_USE,
 131         NFTA_CHAIN_TYPE,
 132         NFTA_CHAIN_COUNTERS,
 133         __NFTA_CHAIN_MAX
 134 };
 135 #define NFTA_CHAIN_MAX          (__NFTA_CHAIN_MAX - 1)
 136
 137 /**
 138  * enum nft_rule_attributes - nf_tables rule netlink attributes
 139  *
 140  * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
 141  * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
 142  * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
 143  * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
 144  * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
 145  */
 146 enum nft_rule_attributes {
 147         NFTA_RULE_UNSPEC,
 148         NFTA_RULE_TABLE,
 149         NFTA_RULE_CHAIN,
 150         NFTA_RULE_HANDLE,
 151         NFTA_RULE_EXPRESSIONS,
 152         NFTA_RULE_COMPAT,
 153         __NFTA_RULE_MAX
 154 };
 155 #define NFTA_RULE_MAX           (__NFTA_RULE_MAX - 1)
 156
 157 /**
 158  * enum nft_rule_compat_flags - nf_tables rule compat flags
 159  *
 160  * @NFT_RULE_COMPAT_F_INV: invert the check result
 161  */
 162 enum nft_rule_compat_flags {
 163         NFT_RULE_COMPAT_F_INV   = (1 << 1),
 164         NFT_RULE_COMPAT_F_MASK  = NFT_RULE_COMPAT_F_INV,
 165 };
 166
 167 /**
 168  * enum nft_rule_compat_attributes - nf_tables rule compat attributes
 169  *
 170  * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
 171  * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
 172  */
 173 enum nft_rule_compat_attributes {
 174         NFTA_RULE_COMPAT_UNSPEC,
 175         NFTA_RULE_COMPAT_PROTO,
 176         NFTA_RULE_COMPAT_FLAGS,
 177         __NFTA_RULE_COMPAT_MAX
 178 };
 179 #define NFTA_RULE_COMPAT_MAX    (__NFTA_RULE_COMPAT_MAX - 1)
 180
 181 /**
 182  * enum nft_set_flags - nf_tables set flags
 183  *
 184  * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
 185  * @NFT_SET_CONSTANT: set contents may not change while bound
 186  * @NFT_SET_INTERVAL: set contains intervals
 187  * @NFT_SET_MAP: set is used as a dictionary
 188  */
 189 enum nft_set_flags {
 190         NFT_SET_ANONYMOUS               = 0x1,
 191         NFT_SET_CONSTANT                = 0x2,
 192         NFT_SET_INTERVAL                = 0x4,
 193         NFT_SET_MAP                     = 0x8,
 194 };
 195
 196 /**
 197  * enum nft_set_attributes - nf_tables set netlink attributes
 198  *
 199  * @NFTA_SET_TABLE: table name (NLA_STRING)
 200  * @NFTA_SET_NAME: set name (NLA_STRING)
 201  * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
 202  * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
 203  * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
 204  * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
 205  * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
 206  */
 207 enum nft_set_attributes {
 208         NFTA_SET_UNSPEC,
 209         NFTA_SET_TABLE,
 210         NFTA_SET_NAME,
 211         NFTA_SET_FLAGS,
 212         NFTA_SET_KEY_TYPE,
 213         NFTA_SET_KEY_LEN,
 214         NFTA_SET_DATA_TYPE,
 215         NFTA_SET_DATA_LEN,
 216         __NFTA_SET_MAX
 217 };
 218 #define NFTA_SET_MAX            (__NFTA_SET_MAX - 1)
 219
 220 /**
 221  * enum nft_set_elem_flags - nf_tables set element flags
 222  *
 223  * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
 224  */
 225 enum nft_set_elem_flags {
 226         NFT_SET_ELEM_INTERVAL_END       = 0x1,
 227 };
 228
 229 /**
 230  * enum nft_set_elem_attributes - nf_tables set element netlink attributes
 231  *
 232  * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
 233  * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
 234  * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
 235  */
 236 enum nft_set_elem_attributes {
 237         NFTA_SET_ELEM_UNSPEC,
 238         NFTA_SET_ELEM_KEY,
 239         NFTA_SET_ELEM_DATA,
 240         NFTA_SET_ELEM_FLAGS,
 241         __NFTA_SET_ELEM_MAX
 242 };
 243 #define NFTA_SET_ELEM_MAX       (__NFTA_SET_ELEM_MAX - 1)
 244
 245 /**
 246  * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
 247  *
 248  * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
 249  * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
 250  * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
 251  */
 252 enum nft_set_elem_list_attributes {
 253         NFTA_SET_ELEM_LIST_UNSPEC,
 254         NFTA_SET_ELEM_LIST_TABLE,
 255         NFTA_SET_ELEM_LIST_SET,
 256         NFTA_SET_ELEM_LIST_ELEMENTS,
 257         __NFTA_SET_ELEM_LIST_MAX
 258 };
 259 #define NFTA_SET_ELEM_LIST_MAX  (__NFTA_SET_ELEM_LIST_MAX - 1)
 260
 261 /**
 262  * enum nft_data_types - nf_tables data types
 263  *
 264  * @NFT_DATA_VALUE: generic data
 265  * @NFT_DATA_VERDICT: netfilter verdict
 266  *
 267  * The type of data is usually determined by the kernel directly and is not
 268  * explicitly specified by userspace. The only difference are sets, where
 269  * userspace specifies the key and mapping data types.
 270  *
 271  * The values 0xffffff00-0xffffffff are reserved for internally used types.
 272  * The remaining range can be freely used by userspace to encode types, all
 273  * values are equivalent to NFT_DATA_VALUE.
 274  */
 275 enum nft_data_types {
 276         NFT_DATA_VALUE,
 277         NFT_DATA_VERDICT        = 0xffffff00U,
 278 };
 279
 280 #define NFT_DATA_RESERVED_MASK  0xffffff00U
 281
 282 /**
 283  * enum nft_data_attributes - nf_tables data netlink attributes
 284  *
 285  * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
 286  * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
 287  */
 288 enum nft_data_attributes {
 289         NFTA_DATA_UNSPEC,
 290         NFTA_DATA_VALUE,
 291         NFTA_DATA_VERDICT,
 292         __NFTA_DATA_MAX
 293 };
 294 #define NFTA_DATA_MAX           (__NFTA_DATA_MAX - 1)
 295
 296 /**
 297  * enum nft_verdict_attributes - nf_tables verdict netlink attributes
 298  *
 299  * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
 300  * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
 301  */
 302 enum nft_verdict_attributes {
 303         NFTA_VERDICT_UNSPEC,
 304         NFTA_VERDICT_CODE,
 305         NFTA_VERDICT_CHAIN,
 306         __NFTA_VERDICT_MAX
 307 };
 308 #define NFTA_VERDICT_MAX        (__NFTA_VERDICT_MAX - 1)
 309
 310 /**
 311  * enum nft_expr_attributes - nf_tables expression netlink attributes
 312  *
 313  * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
 314  * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
 315  */
 316 enum nft_expr_attributes {
 317         NFTA_EXPR_UNSPEC,
 318         NFTA_EXPR_NAME,
 319         NFTA_EXPR_DATA,
 320         __NFTA_EXPR_MAX
 321 };
 322 #define NFTA_EXPR_MAX           (__NFTA_EXPR_MAX - 1)
 323
 324 /**
 325  * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
 326  *
 327  * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
 328  * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
 329  */
 330 enum nft_immediate_attributes {
 331         NFTA_IMMEDIATE_UNSPEC,
 332         NFTA_IMMEDIATE_DREG,
 333         NFTA_IMMEDIATE_DATA,
 334         __NFTA_IMMEDIATE_MAX
 335 };
 336 #define NFTA_IMMEDIATE_MAX      (__NFTA_IMMEDIATE_MAX - 1)
 337
 338 /**
 339  * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
 340  *
 341  * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
 342  * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
 343  * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
 344  * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
 345  * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
 346  *
 347  * The bitwise expression performs the following operation:
 348  *
 349  * dreg = (sreg & mask) ^ xor
 350  *
 351  * which allow to express all bitwise operations:
 352  *
 353  *              mask    xor
 354  * NOT:         1       1
 355  * OR:          0       x
 356  * XOR:         1       x
 357  * AND:         x       0
 358  */
 359 enum nft_bitwise_attributes {
 360         NFTA_BITWISE_UNSPEC,
 361         NFTA_BITWISE_SREG,
 362         NFTA_BITWISE_DREG,
 363         NFTA_BITWISE_LEN,
 364         NFTA_BITWISE_MASK,
 365         NFTA_BITWISE_XOR,
 366         __NFTA_BITWISE_MAX
 367 };
 368 #define NFTA_BITWISE_MAX        (__NFTA_BITWISE_MAX - 1)
 369
 370 /**
 371  * enum nft_byteorder_ops - nf_tables byteorder operators
 372  *
 373  * @NFT_BYTEORDER_NTOH: network to host operator
 374  * @NFT_BYTEORDER_HTON: host to network opertaor
 375  */
 376 enum nft_byteorder_ops {
 377         NFT_BYTEORDER_NTOH,
 378         NFT_BYTEORDER_HTON,
 379 };
 380
 381 /**
 382  * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
 383  *
 384  * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
 385  * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
 386  * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
 387  * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
 388  * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
 389  */
 390 enum nft_byteorder_attributes {
 391         NFTA_BYTEORDER_UNSPEC,
 392         NFTA_BYTEORDER_SREG,
 393         NFTA_BYTEORDER_DREG,
 394         NFTA_BYTEORDER_OP,
 395         NFTA_BYTEORDER_LEN,
 396         NFTA_BYTEORDER_SIZE,
 397         __NFTA_BYTEORDER_MAX
 398 };
 399 #define NFTA_BYTEORDER_MAX      (__NFTA_BYTEORDER_MAX - 1)
 400
 401 /**
 402  * enum nft_cmp_ops - nf_tables relational operator
 403  *
 404  * @NFT_CMP_EQ: equal
 405  * @NFT_CMP_NEQ: not equal
 406  * @NFT_CMP_LT: less than
 407  * @NFT_CMP_LTE: less than or equal to
 408  * @NFT_CMP_GT: greater than
 409  * @NFT_CMP_GTE: greater than or equal to
 410  */
 411 enum nft_cmp_ops {
 412         NFT_CMP_EQ,
 413         NFT_CMP_NEQ,
 414         NFT_CMP_LT,
 415         NFT_CMP_LTE,
 416         NFT_CMP_GT,
 417         NFT_CMP_GTE,
 418 };
 419
 420 /**
 421  * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
 422  *
 423  * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
 424  * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
 425  * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
 426  */
 427 enum nft_cmp_attributes {
 428         NFTA_CMP_UNSPEC,
 429         NFTA_CMP_SREG,
 430         NFTA_CMP_OP,
 431         NFTA_CMP_DATA,
 432         __NFTA_CMP_MAX
 433 };
 434 #define NFTA_CMP_MAX            (__NFTA_CMP_MAX - 1)
 435
 436 /**
 437  * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
 438  *
 439  * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
 440  * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
 441  * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
 442  */
 443 enum nft_lookup_attributes {
 444         NFTA_LOOKUP_UNSPEC,
 445         NFTA_LOOKUP_SET,
 446         NFTA_LOOKUP_SREG,
 447         NFTA_LOOKUP_DREG,
 448         __NFTA_LOOKUP_MAX
 449 };
 450 #define NFTA_LOOKUP_MAX         (__NFTA_LOOKUP_MAX - 1)
 451
 452 /**
 453  * enum nft_payload_bases - nf_tables payload expression offset bases
 454  *
 455  * @NFT_PAYLOAD_LL_HEADER: link layer header
 456  * @NFT_PAYLOAD_NETWORK_HEADER: network header
 457  * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
 458  */
 459 enum nft_payload_bases {
 460         NFT_PAYLOAD_LL_HEADER,
 461         NFT_PAYLOAD_NETWORK_HEADER,
 462         NFT_PAYLOAD_TRANSPORT_HEADER,
 463 };
 464
 465 /**
 466  * enum nft_payload_attributes - nf_tables payload expression netlink attributes
 467  *
 468  * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
 469  * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
 470  * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
 471  * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
 472  */
 473 enum nft_payload_attributes {
 474         NFTA_PAYLOAD_UNSPEC,
 475         NFTA_PAYLOAD_DREG,
 476         NFTA_PAYLOAD_BASE,
 477         NFTA_PAYLOAD_OFFSET,
 478         NFTA_PAYLOAD_LEN,
 479         __NFTA_PAYLOAD_MAX
 480 };
 481 #define NFTA_PAYLOAD_MAX        (__NFTA_PAYLOAD_MAX - 1)
 482
 483 /**
 484  * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
 485  *
 486  * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
 487  * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
 488  * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
 489  * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
 490  */
 491 enum nft_exthdr_attributes {
 492         NFTA_EXTHDR_UNSPEC,
 493         NFTA_EXTHDR_DREG,
 494         NFTA_EXTHDR_TYPE,
 495         NFTA_EXTHDR_OFFSET,
 496         NFTA_EXTHDR_LEN,
 497         __NFTA_EXTHDR_MAX
 498 };
 499 #define NFTA_EXTHDR_MAX         (__NFTA_EXTHDR_MAX - 1)
 500
 501 /**
 502  * enum nft_meta_keys - nf_tables meta expression keys
 503  *
 504  * @NFT_META_LEN: packet length (skb->len)
 505  * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
 506  * @NFT_META_PRIORITY: packet priority (skb->priority)
 507  * @NFT_META_MARK: packet mark (skb->mark)
 508  * @NFT_META_IIF: packet input interface index (dev->ifindex)
 509  * @NFT_META_OIF: packet output interface index (dev->ifindex)
 510  * @NFT_META_IIFNAME: packet input interface name (dev->name)
 511  * @NFT_META_OIFNAME: packet output interface name (dev->name)
 512  * @NFT_META_IIFTYPE: packet input interface type (dev->type)
 513  * @NFT_META_OIFTYPE: packet output interface type (dev->type)
 514  * @NFT_META_SKUID: originating socket UID (fsuid)
 515  * @NFT_META_SKGID: originating socket GID (fsgid)
 516  * @NFT_META_NFTRACE: packet nftrace bit
 517  * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
 518  * @NFT_META_SECMARK: packet secmark (skb->secmark)
 519  */
 520 enum nft_meta_keys {
 521         NFT_META_LEN,
 522         NFT_META_PROTOCOL,
 523         NFT_META_PRIORITY,
 524         NFT_META_MARK,
 525         NFT_META_IIF,
 526         NFT_META_OIF,
 527         NFT_META_IIFNAME,
 528         NFT_META_OIFNAME,
 529         NFT_META_IIFTYPE,
 530         NFT_META_OIFTYPE,
 531         NFT_META_SKUID,
 532         NFT_META_SKGID,
 533         NFT_META_NFTRACE,
 534         NFT_META_RTCLASSID,
 535         NFT_META_SECMARK,
 536 };
 537
 538 /**
 539  * enum nft_meta_attributes - nf_tables meta expression netlink attributes
 540  *
 541  * @NFTA_META_DREG: destination register (NLA_U32)
 542  * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
 543  */
 544 enum nft_meta_attributes {
 545         NFTA_META_UNSPEC,
 546         NFTA_META_DREG,
 547         NFTA_META_KEY,
 548         __NFTA_META_MAX
 549 };
 550 #define NFTA_META_MAX           (__NFTA_META_MAX - 1)
 551
 552 /**
 553  * enum nft_ct_keys - nf_tables ct expression keys
 554  *
 555  * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
 556  * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
 557  * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
 558  * @NFT_CT_MARK: conntrack mark value
 559  * @NFT_CT_SECMARK: conntrack secmark value
 560  * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
 561  * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
 562  * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
 563  * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
 564  * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
 565  * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
 566  * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
 567  * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
 568  */
 569 enum nft_ct_keys {
 570         NFT_CT_STATE,
 571         NFT_CT_DIRECTION,
 572         NFT_CT_STATUS,
 573         NFT_CT_MARK,
 574         NFT_CT_SECMARK,
 575         NFT_CT_EXPIRATION,
 576         NFT_CT_HELPER,
 577         NFT_CT_L3PROTOCOL,
 578         NFT_CT_SRC,
 579         NFT_CT_DST,
 580         NFT_CT_PROTOCOL,
 581         NFT_CT_PROTO_SRC,
 582         NFT_CT_PROTO_DST,
 583 };
 584
 585 /**
 586  * enum nft_ct_attributes - nf_tables ct expression netlink attributes
 587  *
 588  * @NFTA_CT_DREG: destination register (NLA_U32)
 589  * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
 590  * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
 591  */
 592 enum nft_ct_attributes {
 593         NFTA_CT_UNSPEC,
 594         NFTA_CT_DREG,
 595         NFTA_CT_KEY,
 596         NFTA_CT_DIRECTION,
 597         __NFTA_CT_MAX
 598 };
 599 #define NFTA_CT_MAX             (__NFTA_CT_MAX - 1)
 600
 601 /**
 602  * enum nft_limit_attributes - nf_tables limit expression netlink attributes
 603  *
 604  * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
 605  * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
 606  */
 607 enum nft_limit_attributes {
 608         NFTA_LIMIT_UNSPEC,
 609         NFTA_LIMIT_RATE,
 610         NFTA_LIMIT_UNIT,
 611         __NFTA_LIMIT_MAX
 612 };
 613 #define NFTA_LIMIT_MAX          (__NFTA_LIMIT_MAX - 1)
 614
 615 /**
 616  * enum nft_counter_attributes - nf_tables counter expression netlink attributes
 617  *
 618  * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
 619  * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
 620  */
 621 enum nft_counter_attributes {
 622         NFTA_COUNTER_UNSPEC,
 623         NFTA_COUNTER_BYTES,
 624         NFTA_COUNTER_PACKETS,
 625         __NFTA_COUNTER_MAX
 626 };
 627 #define NFTA_COUNTER_MAX        (__NFTA_COUNTER_MAX - 1)
 628
 629 /**
 630  * enum nft_log_attributes - nf_tables log expression netlink attributes
 631  *
 632  * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
 633  * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
 634  * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
 635  * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
 636  */
 637 enum nft_log_attributes {
 638         NFTA_LOG_UNSPEC,
 639         NFTA_LOG_GROUP,
 640         NFTA_LOG_PREFIX,
 641         NFTA_LOG_SNAPLEN,
 642         NFTA_LOG_QTHRESHOLD,
 643         __NFTA_LOG_MAX
 644 };
 645 #define NFTA_LOG_MAX            (__NFTA_LOG_MAX - 1)
 646
 647 /**
 648  * enum nft_reject_types - nf_tables reject expression reject types
 649  *
 650  * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
 651  * @NFT_REJECT_TCP_RST: reject using TCP RST
 652  */
 653 enum nft_reject_types {
 654         NFT_REJECT_ICMP_UNREACH,
 655         NFT_REJECT_TCP_RST,
 656 };
 657
 658 /**
 659  * enum nft_reject_attributes - nf_tables reject expression netlink attributes
 660  *
 661  * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
 662  * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
 663  */
 664 enum nft_reject_attributes {
 665         NFTA_REJECT_UNSPEC,
 666         NFTA_REJECT_TYPE,
 667         NFTA_REJECT_ICMP_CODE,
 668         __NFTA_REJECT_MAX
 669 };
 670 #define NFTA_REJECT_MAX         (__NFTA_REJECT_MAX - 1)
 671
 672 /**
 673  * enum nft_nat_types - nf_tables nat expression NAT types
 674  *
 675  * @NFT_NAT_SNAT: source NAT
 676  * @NFT_NAT_DNAT: destination NAT
 677  */
 678 enum nft_nat_types {
 679         NFT_NAT_SNAT,
 680         NFT_NAT_DNAT,
 681 };
 682
 683 /**
 684  * enum nft_nat_attributes - nf_tables nat expression netlink attributes
 685  *
 686  * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
 687  * @NFTA_NAT_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
 688  * @NFTA_NAT_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
 689  * @NFTA_NAT_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
 690  * @NFTA_NAT_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
 691  */
 692 enum nft_nat_attributes {
 693         NFTA_NAT_UNSPEC,
 694         NFTA_NAT_TYPE,
 695         NFTA_NAT_ADDR_MIN,
 696         NFTA_NAT_ADDR_MAX,
 697         NFTA_NAT_PROTO_MIN,
 698         NFTA_NAT_PROTO_MAX,
 699         __NFTA_NAT_MAX
 700 };
 701 #define NFTA_NAT_MAX            (__NFTA_NAT_MAX - 1)
 702
 703 #endif /* _LINUX_NF_TABLES_H */