include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef LINUX_IEEE80211_H
  16 #define LINUX_IEEE80211_H
  17
  18 #include <linux/types.h>
  19 #include <asm/byteorder.h>
  20
  21 /*
  22  * DS bit usage
  23  *
  24  * TA = transmitter address
  25  * RA = receiver address
  26  * DA = destination address
  27  * SA = source address
  28  *
  29  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  30  * -----------------------------------------------------------------
  31  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  32  *  0       1       DA      BSSID   SA      -       AP -> STA
  33  *  1       0       BSSID   SA      DA      -       AP <- STA
  34  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  35  */
  36
  37 #define FCS_LEN 4
  38
  39 #define IEEE80211_FCTL_VERS             0x0003
  40 #define IEEE80211_FCTL_FTYPE            0x000c
  41 #define IEEE80211_FCTL_STYPE            0x00f0
  42 #define IEEE80211_FCTL_TODS             0x0100
  43 #define IEEE80211_FCTL_FROMDS           0x0200
  44 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  45 #define IEEE80211_FCTL_RETRY            0x0800
  46 #define IEEE80211_FCTL_PM               0x1000
  47 #define IEEE80211_FCTL_MOREDATA         0x2000
  48 #define IEEE80211_FCTL_PROTECTED        0x4000
  49 #define IEEE80211_FCTL_ORDER            0x8000
  50
  51 #define IEEE80211_SCTL_FRAG             0x000F
  52 #define IEEE80211_SCTL_SEQ              0xFFF0
  53
  54 #define IEEE80211_FTYPE_MGMT            0x0000
  55 #define IEEE80211_FTYPE_CTL             0x0004
  56 #define IEEE80211_FTYPE_DATA            0x0008
  57
  58 /* management */
  59 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  60 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  61 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  62 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  63 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  64 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  65 #define IEEE80211_STYPE_BEACON          0x0080
  66 #define IEEE80211_STYPE_ATIM            0x0090
  67 #define IEEE80211_STYPE_DISASSOC        0x00A0
  68 #define IEEE80211_STYPE_AUTH            0x00B0
  69 #define IEEE80211_STYPE_DEAUTH          0x00C0
  70 #define IEEE80211_STYPE_ACTION          0x00D0
  71
  72 /* control */
  73 #define IEEE80211_STYPE_BACK_REQ        0x0080
  74 #define IEEE80211_STYPE_BACK            0x0090
  75 #define IEEE80211_STYPE_PSPOLL          0x00A0
  76 #define IEEE80211_STYPE_RTS             0x00B0
  77 #define IEEE80211_STYPE_CTS             0x00C0
  78 #define IEEE80211_STYPE_ACK             0x00D0
  79 #define IEEE80211_STYPE_CFEND           0x00E0
  80 #define IEEE80211_STYPE_CFENDACK        0x00F0
  81
  82 /* data */
  83 #define IEEE80211_STYPE_DATA                    0x0000
  84 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  85 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  86 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  87 #define IEEE80211_STYPE_NULLFUNC                0x0040
  88 #define IEEE80211_STYPE_CFACK                   0x0050
  89 #define IEEE80211_STYPE_CFPOLL                  0x0060
  90 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  91 #define IEEE80211_STYPE_QOS_DATA                0x0080
  92 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  93 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  94 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  95 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  96 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  97 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  98 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  99
 100
 101 /* miscellaneous IEEE 802.11 constants */
 102 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 103 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 104 #define IEEE80211_MAX_AID               2007
 105 #define IEEE80211_MAX_TIM_LEN           251
 106 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 107    6.2.1.1.2.
 108
 109    802.11e clarifies the figure in section 7.1.2. The frame body is
 110    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 111 #define IEEE80211_MAX_DATA_LEN          2304
 112 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 113 #define IEEE80211_MAX_FRAME_LEN         2352
 114
 115 #define IEEE80211_MAX_SSID_LEN          32
 116
 117 #define IEEE80211_MAX_MESH_ID_LEN       32
 118
 119 #define IEEE80211_QOS_CTL_LEN           2
 120 /* 1d tag mask */
 121 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 122 /* TID mask */
 123 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 124 /* EOSP */
 125 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 126 /* ACK policy */
 127 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 128 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 129 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 130 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 131 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 132 /* A-MSDU 802.11n */
 133 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 134 /* Mesh Control 802.11s */
 135 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 136
 137 /* U-APSD queue for WMM IEs sent by AP */
 138 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 139 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 140
 141 /* U-APSD queues for WMM IEs sent by STA */
 142 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 143 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 144 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 145 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 146 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 147
 148 /* U-APSD max SP length for WMM IEs sent by STA */
 149 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 150 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 151 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 152 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 153 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 154 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 155
 156 #define IEEE80211_HT_CTL_LEN            4
 157
 158 struct ieee80211_hdr {
 159         __le16 frame_control;
 160         __le16 duration_id;
 161         u8 addr1[6];
 162         u8 addr2[6];
 163         u8 addr3[6];
 164         __le16 seq_ctrl;
 165         u8 addr4[6];
 166 } __attribute__ ((packed));
 167
 168 struct ieee80211_hdr_3addr {
 169         __le16 frame_control;
 170         __le16 duration_id;
 171         u8 addr1[6];
 172         u8 addr2[6];
 173         u8 addr3[6];
 174         __le16 seq_ctrl;
 175 } __attribute__ ((packed));
 176
 177 struct ieee80211_qos_hdr {
 178         __le16 frame_control;
 179         __le16 duration_id;
 180         u8 addr1[6];
 181         u8 addr2[6];
 182         u8 addr3[6];
 183         __le16 seq_ctrl;
 184         __le16 qos_ctrl;
 185 } __attribute__ ((packed));
 186
 187 /**
 188  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 189  * @fc: frame control bytes in little-endian byteorder
 190  */
 191 static inline int ieee80211_has_tods(__le16 fc)
 192 {
 193         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 194 }
 195
 196 /**
 197  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 198  * @fc: frame control bytes in little-endian byteorder
 199  */
 200 static inline int ieee80211_has_fromds(__le16 fc)
 201 {
 202         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 203 }
 204
 205 /**
 206  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 207  * @fc: frame control bytes in little-endian byteorder
 208  */
 209 static inline int ieee80211_has_a4(__le16 fc)
 210 {
 211         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 212         return (fc & tmp) == tmp;
 213 }
 214
 215 /**
 216  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 217  * @fc: frame control bytes in little-endian byteorder
 218  */
 219 static inline int ieee80211_has_morefrags(__le16 fc)
 220 {
 221         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 222 }
 223
 224 /**
 225  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 226  * @fc: frame control bytes in little-endian byteorder
 227  */
 228 static inline int ieee80211_has_retry(__le16 fc)
 229 {
 230         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 231 }
 232
 233 /**
 234  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 235  * @fc: frame control bytes in little-endian byteorder
 236  */
 237 static inline int ieee80211_has_pm(__le16 fc)
 238 {
 239         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 240 }
 241
 242 /**
 243  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 244  * @fc: frame control bytes in little-endian byteorder
 245  */
 246 static inline int ieee80211_has_moredata(__le16 fc)
 247 {
 248         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 249 }
 250
 251 /**
 252  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 253  * @fc: frame control bytes in little-endian byteorder
 254  */
 255 static inline int ieee80211_has_protected(__le16 fc)
 256 {
 257         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 258 }
 259
 260 /**
 261  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 262  * @fc: frame control bytes in little-endian byteorder
 263  */
 264 static inline int ieee80211_has_order(__le16 fc)
 265 {
 266         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 267 }
 268
 269 /**
 270  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 271  * @fc: frame control bytes in little-endian byteorder
 272  */
 273 static inline int ieee80211_is_mgmt(__le16 fc)
 274 {
 275         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 276                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 277 }
 278
 279 /**
 280  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 281  * @fc: frame control bytes in little-endian byteorder
 282  */
 283 static inline int ieee80211_is_ctl(__le16 fc)
 284 {
 285         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 286                cpu_to_le16(IEEE80211_FTYPE_CTL);
 287 }
 288
 289 /**
 290  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 291  * @fc: frame control bytes in little-endian byteorder
 292  */
 293 static inline int ieee80211_is_data(__le16 fc)
 294 {
 295         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 296                cpu_to_le16(IEEE80211_FTYPE_DATA);
 297 }
 298
 299 /**
 300  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 301  * @fc: frame control bytes in little-endian byteorder
 302  */
 303 static inline int ieee80211_is_data_qos(__le16 fc)
 304 {
 305         /*
 306          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 307          * to check the one bit
 308          */
 309         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 310                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 311 }
 312
 313 /**
 314  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 315  * @fc: frame control bytes in little-endian byteorder
 316  */
 317 static inline int ieee80211_is_data_present(__le16 fc)
 318 {
 319         /*
 320          * mask with 0x40 and test that that bit is clear to only return true
 321          * for the data-containing substypes.
 322          */
 323         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 324                cpu_to_le16(IEEE80211_FTYPE_DATA);
 325 }
 326
 327 /**
 328  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 329  * @fc: frame control bytes in little-endian byteorder
 330  */
 331 static inline int ieee80211_is_assoc_req(__le16 fc)
 332 {
 333         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 334                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 335 }
 336
 337 /**
 338  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 339  * @fc: frame control bytes in little-endian byteorder
 340  */
 341 static inline int ieee80211_is_assoc_resp(__le16 fc)
 342 {
 343         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 344                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 345 }
 346
 347 /**
 348  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 349  * @fc: frame control bytes in little-endian byteorder
 350  */
 351 static inline int ieee80211_is_reassoc_req(__le16 fc)
 352 {
 353         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 354                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 355 }
 356
 357 /**
 358  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 359  * @fc: frame control bytes in little-endian byteorder
 360  */
 361 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 362 {
 363         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 364                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 365 }
 366
 367 /**
 368  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 369  * @fc: frame control bytes in little-endian byteorder
 370  */
 371 static inline int ieee80211_is_probe_req(__le16 fc)
 372 {
 373         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 374                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 375 }
 376
 377 /**
 378  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 379  * @fc: frame control bytes in little-endian byteorder
 380  */
 381 static inline int ieee80211_is_probe_resp(__le16 fc)
 382 {
 383         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 384                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 385 }
 386
 387 /**
 388  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 389  * @fc: frame control bytes in little-endian byteorder
 390  */
 391 static inline int ieee80211_is_beacon(__le16 fc)
 392 {
 393         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 394                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 395 }
 396
 397 /**
 398  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 399  * @fc: frame control bytes in little-endian byteorder
 400  */
 401 static inline int ieee80211_is_atim(__le16 fc)
 402 {
 403         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 404                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 405 }
 406
 407 /**
 408  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 409  * @fc: frame control bytes in little-endian byteorder
 410  */
 411 static inline int ieee80211_is_disassoc(__le16 fc)
 412 {
 413         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 414                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 415 }
 416
 417 /**
 418  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 419  * @fc: frame control bytes in little-endian byteorder
 420  */
 421 static inline int ieee80211_is_auth(__le16 fc)
 422 {
 423         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 424                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 425 }
 426
 427 /**
 428  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 429  * @fc: frame control bytes in little-endian byteorder
 430  */
 431 static inline int ieee80211_is_deauth(__le16 fc)
 432 {
 433         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 434                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 435 }
 436
 437 /**
 438  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 439  * @fc: frame control bytes in little-endian byteorder
 440  */
 441 static inline int ieee80211_is_action(__le16 fc)
 442 {
 443         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 444                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 445 }
 446
 447 /**
 448  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 449  * @fc: frame control bytes in little-endian byteorder
 450  */
 451 static inline int ieee80211_is_back_req(__le16 fc)
 452 {
 453         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 454                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 455 }
 456
 457 /**
 458  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 459  * @fc: frame control bytes in little-endian byteorder
 460  */
 461 static inline int ieee80211_is_back(__le16 fc)
 462 {
 463         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 464                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 465 }
 466
 467 /**
 468  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 469  * @fc: frame control bytes in little-endian byteorder
 470  */
 471 static inline int ieee80211_is_pspoll(__le16 fc)
 472 {
 473         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 474                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 475 }
 476
 477 /**
 478  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 479  * @fc: frame control bytes in little-endian byteorder
 480  */
 481 static inline int ieee80211_is_rts(__le16 fc)
 482 {
 483         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 484                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 485 }
 486
 487 /**
 488  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 489  * @fc: frame control bytes in little-endian byteorder
 490  */
 491 static inline int ieee80211_is_cts(__le16 fc)
 492 {
 493         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 494                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 495 }
 496
 497 /**
 498  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 499  * @fc: frame control bytes in little-endian byteorder
 500  */
 501 static inline int ieee80211_is_ack(__le16 fc)
 502 {
 503         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 504                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 505 }
 506
 507 /**
 508  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 509  * @fc: frame control bytes in little-endian byteorder
 510  */
 511 static inline int ieee80211_is_cfend(__le16 fc)
 512 {
 513         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 514                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 515 }
 516
 517 /**
 518  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 519  * @fc: frame control bytes in little-endian byteorder
 520  */
 521 static inline int ieee80211_is_cfendack(__le16 fc)
 522 {
 523         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 524                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 525 }
 526
 527 /**
 528  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 529  * @fc: frame control bytes in little-endian byteorder
 530  */
 531 static inline int ieee80211_is_nullfunc(__le16 fc)
 532 {
 533         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 534                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 535 }
 536
 537 /**
 538  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 539  * @fc: frame control bytes in little-endian byteorder
 540  */
 541 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 542 {
 543         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 544                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 545 }
 546
 547 /**
 548  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 549  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 550  */
 551 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 552 {
 553         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 554 }
 555
 556 struct ieee80211s_hdr {
 557         u8 flags;
 558         u8 ttl;
 559         __le32 seqnum;
 560         u8 eaddr1[6];
 561         u8 eaddr2[6];
 562 } __attribute__ ((packed));
 563
 564 /* Mesh flags */
 565 #define MESH_FLAGS_AE_A4        0x1
 566 #define MESH_FLAGS_AE_A5_A6     0x2
 567 #define MESH_FLAGS_AE           0x3
 568 #define MESH_FLAGS_PS_DEEP      0x4
 569
 570 /**
 571  * struct ieee80211_quiet_ie
 572  *
 573  * This structure refers to "Quiet information element"
 574  */
 575 struct ieee80211_quiet_ie {
 576         u8 count;
 577         u8 period;
 578         __le16 duration;
 579         __le16 offset;
 580 } __attribute__ ((packed));
 581
 582 /**
 583  * struct ieee80211_msrment_ie
 584  *
 585  * This structure refers to "Measurement Request/Report information element"
 586  */
 587 struct ieee80211_msrment_ie {
 588         u8 token;
 589         u8 mode;
 590         u8 type;
 591         u8 request[0];
 592 } __attribute__ ((packed));
 593
 594 /**
 595  * struct ieee80211_channel_sw_ie
 596  *
 597  * This structure refers to "Channel Switch Announcement information element"
 598  */
 599 struct ieee80211_channel_sw_ie {
 600         u8 mode;
 601         u8 new_ch_num;
 602         u8 count;
 603 } __attribute__ ((packed));
 604
 605 /**
 606  * struct ieee80211_tim
 607  *
 608  * This structure refers to "Traffic Indication Map information element"
 609  */
 610 struct ieee80211_tim_ie {
 611         u8 dtim_count;
 612         u8 dtim_period;
 613         u8 bitmap_ctrl;
 614         /* variable size: 1 - 251 bytes */
 615         u8 virtual_map[1];
 616 } __attribute__ ((packed));
 617
 618 /**
 619  * struct ieee80211_meshconf_ie
 620  *
 621  * This structure refers to "Mesh Configuration information element"
 622  */
 623 struct ieee80211_meshconf_ie {
 624         u8 meshconf_psel;
 625         u8 meshconf_pmetric;
 626         u8 meshconf_congest;
 627         u8 meshconf_synch;
 628         u8 meshconf_auth;
 629         u8 meshconf_form;
 630         u8 meshconf_cap;
 631 } __attribute__ ((packed));
 632
 633 /**
 634  * struct ieee80211_rann_ie
 635  *
 636  * This structure refers to "Root Announcement information element"
 637  */
 638 struct ieee80211_rann_ie {
 639         u8 rann_flags;
 640         u8 rann_hopcount;
 641         u8 rann_ttl;
 642         u8 rann_addr[6];
 643         __le32 rann_seq;
 644         __le32 rann_interval;
 645         __le32 rann_metric;
 646 } __attribute__ ((packed));
 647
 648 enum ieee80211_rann_flags {
 649         RANN_FLAG_IS_GATE = 1 << 0,
 650 };
 651
 652 #define WLAN_SA_QUERY_TR_ID_LEN 2
 653
 654 struct ieee80211_mgmt {
 655         __le16 frame_control;
 656         __le16 duration;
 657         u8 da[6];
 658         u8 sa[6];
 659         u8 bssid[6];
 660         __le16 seq_ctrl;
 661         union {
 662                 struct {
 663                         __le16 auth_alg;
 664                         __le16 auth_transaction;
 665                         __le16 status_code;
 666                         /* possibly followed by Challenge text */
 667                         u8 variable[0];
 668                 } __attribute__ ((packed)) auth;
 669                 struct {
 670                         __le16 reason_code;
 671                 } __attribute__ ((packed)) deauth;
 672                 struct {
 673                         __le16 capab_info;
 674                         __le16 listen_interval;
 675                         /* followed by SSID and Supported rates */
 676                         u8 variable[0];
 677                 } __attribute__ ((packed)) assoc_req;
 678                 struct {
 679                         __le16 capab_info;
 680                         __le16 status_code;
 681                         __le16 aid;
 682                         /* followed by Supported rates */
 683                         u8 variable[0];
 684                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 685                 struct {
 686                         __le16 capab_info;
 687                         __le16 listen_interval;
 688                         u8 current_ap[6];
 689                         /* followed by SSID and Supported rates */
 690                         u8 variable[0];
 691                 } __attribute__ ((packed)) reassoc_req;
 692                 struct {
 693                         __le16 reason_code;
 694                 } __attribute__ ((packed)) disassoc;
 695                 struct {
 696                         __le64 timestamp;
 697                         __le16 beacon_int;
 698                         __le16 capab_info;
 699                         /* followed by some of SSID, Supported rates,
 700                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 701                         u8 variable[0];
 702                 } __attribute__ ((packed)) beacon;
 703                 struct {
 704                         /* only variable items: SSID, Supported rates */
 705                         u8 variable[0];
 706                 } __attribute__ ((packed)) probe_req;
 707                 struct {
 708                         __le64 timestamp;
 709                         __le16 beacon_int;
 710                         __le16 capab_info;
 711                         /* followed by some of SSID, Supported rates,
 712                          * FH Params, DS Params, CF Params, IBSS Params */
 713                         u8 variable[0];
 714                 } __attribute__ ((packed)) probe_resp;
 715                 struct {
 716                         u8 category;
 717                         union {
 718                                 struct {
 719                                         u8 action_code;
 720                                         u8 dialog_token;
 721                                         u8 status_code;
 722                                         u8 variable[0];
 723                                 } __attribute__ ((packed)) wme_action;
 724                                 struct{
 725                                         u8 action_code;
 726                                         u8 element_id;
 727                                         u8 length;
 728                                         struct ieee80211_channel_sw_ie sw_elem;
 729                                 } __attribute__((packed)) chan_switch;
 730                                 struct{
 731                                         u8 action_code;
 732                                         u8 dialog_token;
 733                                         u8 element_id;
 734                                         u8 length;
 735                                         struct ieee80211_msrment_ie msr_elem;
 736                                 } __attribute__((packed)) measurement;
 737                                 struct{
 738                                         u8 action_code;
 739                                         u8 dialog_token;
 740                                         __le16 capab;
 741                                         __le16 timeout;
 742                                         __le16 start_seq_num;
 743                                 } __attribute__((packed)) addba_req;
 744                                 struct{
 745                                         u8 action_code;
 746                                         u8 dialog_token;
 747                                         __le16 status;
 748                                         __le16 capab;
 749                                         __le16 timeout;
 750                                 } __attribute__((packed)) addba_resp;
 751                                 struct{
 752                                         u8 action_code;
 753                                         __le16 params;
 754                                         __le16 reason_code;
 755                                 } __attribute__((packed)) delba;
 756                                 struct {
 757                                         u8 action_code;
 758                                         u8 variable[0];
 759                                 } __attribute__((packed)) self_prot;
 760                                 struct{
 761                                         u8 action_code;
 762                                         u8 variable[0];
 763                                 } __attribute__((packed)) mesh_action;
 764                                 struct {
 765                                         u8 action;
 766                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 767                                 } __attribute__ ((packed)) sa_query;
 768                                 struct {
 769                                         u8 action;
 770                                         u8 smps_control;
 771                                 } __attribute__ ((packed)) ht_smps;
 772                                 struct {
 773                                         u8 action_code;
 774                                         u8 dialog_token;
 775                                         __le16 capability;
 776                                         u8 variable[0];
 777                                 } __packed tdls_discover_resp;
 778                         } u;
 779                 } __attribute__ ((packed)) action;
 780         } u;
 781 } __attribute__ ((packed));
 782
 783 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 784 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 785
 786 /* mgmt header + 1 byte category code */
 787 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 788
 789
 790 /* Management MIC information element (IEEE 802.11w) */
 791 struct ieee80211_mmie {
 792         u8 element_id;
 793         u8 length;
 794         __le16 key_id;
 795         u8 sequence_number[6];
 796         u8 mic[8];
 797 } __attribute__ ((packed));
 798
 799 struct ieee80211_vendor_ie {
 800         u8 element_id;
 801         u8 len;
 802         u8 oui[3];
 803         u8 oui_type;
 804 } __packed;
 805
 806 /* Control frames */
 807 struct ieee80211_rts {
 808         __le16 frame_control;
 809         __le16 duration;
 810         u8 ra[6];
 811         u8 ta[6];
 812 } __attribute__ ((packed));
 813
 814 struct ieee80211_cts {
 815         __le16 frame_control;
 816         __le16 duration;
 817         u8 ra[6];
 818 } __attribute__ ((packed));
 819
 820 struct ieee80211_pspoll {
 821         __le16 frame_control;
 822         __le16 aid;
 823         u8 bssid[6];
 824         u8 ta[6];
 825 } __attribute__ ((packed));
 826
 827 /* TDLS */
 828
 829 /* Link-id information element */
 830 struct ieee80211_tdls_lnkie {
 831         u8 ie_type; /* Link Identifier IE */
 832         u8 ie_len;
 833         u8 bssid[6];
 834         u8 init_sta[6];
 835         u8 resp_sta[6];
 836 } __packed;
 837
 838 struct ieee80211_tdls_data {
 839         u8 da[6];
 840         u8 sa[6];
 841         __be16 ether_type;
 842         u8 payload_type;
 843         u8 category;
 844         u8 action_code;
 845         union {
 846                 struct {
 847                         u8 dialog_token;
 848                         __le16 capability;
 849                         u8 variable[0];
 850                 } __packed setup_req;
 851                 struct {
 852                         __le16 status_code;
 853                         u8 dialog_token;
 854                         __le16 capability;
 855                         u8 variable[0];
 856                 } __packed setup_resp;
 857                 struct {
 858                         __le16 status_code;
 859                         u8 dialog_token;
 860                         u8 variable[0];
 861                 } __packed setup_cfm;
 862                 struct {
 863                         __le16 reason_code;
 864                         u8 variable[0];
 865                 } __packed teardown;
 866                 struct {
 867                         u8 dialog_token;
 868                         u8 variable[0];
 869                 } __packed discover_req;
 870         } u;
 871 } __packed;
 872
 873 /**
 874  * struct ieee80211_bar - HT Block Ack Request
 875  *
 876  * This structure refers to "HT BlockAckReq" as
 877  * described in 802.11n draft section 7.2.1.7.1
 878  */
 879 struct ieee80211_bar {
 880         __le16 frame_control;
 881         __le16 duration;
 882         __u8 ra[6];
 883         __u8 ta[6];
 884         __le16 control;
 885         __le16 start_seq_num;
 886 } __attribute__((packed));
 887
 888 /* 802.11 BAR control masks */
 889 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 890 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 891 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 892 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 893 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 894
 895 #define IEEE80211_HT_MCS_MASK_LEN               10
 896
 897 /**
 898  * struct ieee80211_mcs_info - MCS information
 899  * @rx_mask: RX mask
 900  * @rx_highest: highest supported RX rate. If set represents
 901  *      the highest supported RX data rate in units of 1 Mbps.
 902  *      If this field is 0 this value should not be used to
 903  *      consider the highest RX data rate supported.
 904  * @tx_params: TX parameters
 905  */
 906 struct ieee80211_mcs_info {
 907         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 908         __le16 rx_highest;
 909         u8 tx_params;
 910         u8 reserved[3];
 911 } __attribute__((packed));
 912
 913 /* 802.11n HT capability MSC set */
 914 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 915 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 916 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 917 /* value 0 == 1 stream etc */
 918 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 919 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 920 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 921 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 922
 923 /*
 924  * 802.11n D5.0 20.3.5 / 20.6 says:
 925  * - indices 0 to 7 and 32 are single spatial stream
 926  * - 8 to 31 are multiple spatial streams using equal modulation
 927  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 928  * - remainder are multiple spatial streams using unequal modulation
 929  */
 930 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 931 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 932         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 933
 934 /**
 935  * struct ieee80211_ht_cap - HT capabilities
 936  *
 937  * This structure is the "HT capabilities element" as
 938  * described in 802.11n D5.0 7.3.2.57
 939  */
 940 struct ieee80211_ht_cap {
 941         __le16 cap_info;
 942         u8 ampdu_params_info;
 943
 944         /* 16 bytes MCS information */
 945         struct ieee80211_mcs_info mcs;
 946
 947         __le16 extended_ht_cap_info;
 948         __le32 tx_BF_cap_info;
 949         u8 antenna_selection_info;
 950 } __attribute__ ((packed));
 951
 952 /* 802.11n HT capabilities masks (for cap_info) */
 953 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 954 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 955 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 956 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 957 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 958 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 959 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 960 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 961 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 962 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 963 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 964 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 965 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 966 #define IEEE80211_HT_CAP_RESERVED               0x2000
 967 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 968 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 969
 970 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 971 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 972 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 973 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 974 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 975 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 976 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 977 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 978
 979 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 980 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 981 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 982 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 983
 984 /*
 985  * Maximum length of AMPDU that the STA can receive.
 986  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 987  */
 988 enum ieee80211_max_ampdu_length_exp {
 989         IEEE80211_HT_MAX_AMPDU_8K = 0,
 990         IEEE80211_HT_MAX_AMPDU_16K = 1,
 991         IEEE80211_HT_MAX_AMPDU_32K = 2,
 992         IEEE80211_HT_MAX_AMPDU_64K = 3
 993 };
 994
 995 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 996
 997 /* Minimum MPDU start spacing */
 998 enum ieee80211_min_mpdu_spacing {
 999         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1000         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1001         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1002         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1003         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1004         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1005         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1006         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1007 };
1008
1009 /**
1010  * struct ieee80211_ht_operation - HT operation IE
1011  *
1012  * This structure is the "HT operation element" as
1013  * described in 802.11n-2009 7.3.2.57
1014  */
1015 struct ieee80211_ht_operation {
1016         u8 primary_chan;
1017         u8 ht_param;
1018         __le16 operation_mode;
1019         __le16 stbc_param;
1020         u8 basic_set[16];
1021 } __attribute__ ((packed));
1022
1023 /* for ht_param */
1024 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1025 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1026 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1027 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1028 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1029 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1030
1031 /* for operation_mode */
1032 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1033 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1034 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1035 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1036 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1037 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1038 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1039
1040 /* for stbc_param */
1041 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1042 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1043 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1044 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1045 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1046 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1047
1048
1049 /* block-ack parameters */
1050 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1051 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1052 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1053 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1054 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1055
1056 /*
1057  * A-PMDU buffer sizes
1058  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1059  */
1060 #define IEEE80211_MIN_AMPDU_BUF 0x8
1061 #define IEEE80211_MAX_AMPDU_BUF 0x40
1062
1063
1064 /* Spatial Multiplexing Power Save Modes (for capability) */
1065 #define WLAN_HT_CAP_SM_PS_STATIC        0
1066 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1067 #define WLAN_HT_CAP_SM_PS_INVALID       2
1068 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1069
1070 /* for SM power control field lower two bits */
1071 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1072 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1073 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1074
1075 /* Authentication algorithms */
1076 #define WLAN_AUTH_OPEN 0
1077 #define WLAN_AUTH_SHARED_KEY 1
1078 #define WLAN_AUTH_FT 2
1079 #define WLAN_AUTH_SAE 3
1080 #define WLAN_AUTH_LEAP 128
1081
1082 #define WLAN_AUTH_CHALLENGE_LEN 128
1083
1084 #define WLAN_CAPABILITY_ESS             (1<<0)
1085 #define WLAN_CAPABILITY_IBSS            (1<<1)
1086
1087 /*
1088  * A mesh STA sets the ESS and IBSS capability bits to zero.
1089  * however, this holds true for p2p probe responses (in the p2p_find
1090  * phase) as well.
1091  */
1092 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1093         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1094
1095 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1096 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1097 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1098 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1099 #define WLAN_CAPABILITY_PBCC            (1<<6)
1100 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1101
1102 /* 802.11h */
1103 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1104 #define WLAN_CAPABILITY_QOS             (1<<9)
1105 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1106 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1107 /* measurement */
1108 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1109 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1110 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1111
1112 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1113 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1114 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1115
1116
1117 /* 802.11g ERP information element */
1118 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1119 #define WLAN_ERP_USE_PROTECTION (1<<1)
1120 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1121
1122 /* WLAN_ERP_BARKER_PREAMBLE values */
1123 enum {
1124         WLAN_ERP_PREAMBLE_SHORT = 0,
1125         WLAN_ERP_PREAMBLE_LONG = 1,
1126 };
1127
1128 /* Status codes */
1129 enum ieee80211_statuscode {
1130         WLAN_STATUS_SUCCESS = 0,
1131         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1132         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1133         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1134         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1135         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1136         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1137         WLAN_STATUS_CHALLENGE_FAIL = 15,
1138         WLAN_STATUS_AUTH_TIMEOUT = 16,
1139         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1140         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1141         /* 802.11b */
1142         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1143         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1144         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1145         /* 802.11h */
1146         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1147         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1148         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1149         /* 802.11g */
1150         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1151         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1152         /* 802.11w */
1153         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1154         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1155         /* 802.11i */
1156         WLAN_STATUS_INVALID_IE = 40,
1157         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1158         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1159         WLAN_STATUS_INVALID_AKMP = 43,
1160         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1161         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1162         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1163         /* 802.11e */
1164         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1165         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1166         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1167         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1168         WLAN_STATUS_REQUEST_DECLINED = 37,
1169         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1170         WLAN_STATUS_CHANGE_TSPEC = 39,
1171         WLAN_STATUS_WAIT_TS_DELAY = 47,
1172         WLAN_STATUS_NO_DIRECT_LINK = 48,
1173         WLAN_STATUS_STA_NOT_PRESENT = 49,
1174         WLAN_STATUS_STA_NOT_QSTA = 50,
1175         /* 802.11s */
1176         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1177         WLAN_STATUS_FCG_NOT_SUPP = 78,
1178         WLAN_STATUS_STA_NO_TBTT = 78,
1179 };
1180
1181
1182 /* Reason codes */
1183 enum ieee80211_reasoncode {
1184         WLAN_REASON_UNSPECIFIED = 1,
1185         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1186         WLAN_REASON_DEAUTH_LEAVING = 3,
1187         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1188         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1189         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1190         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1191         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1192         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1193         /* 802.11h */
1194         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1195         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1196         /* 802.11i */
1197         WLAN_REASON_INVALID_IE = 13,
1198         WLAN_REASON_MIC_FAILURE = 14,
1199         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1200         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1201         WLAN_REASON_IE_DIFFERENT = 17,
1202         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1203         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1204         WLAN_REASON_INVALID_AKMP = 20,
1205         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1206         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1207         WLAN_REASON_IEEE8021X_FAILED = 23,
1208         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1209         /* 802.11e */
1210         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1211         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1212         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1213         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1214         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1215         WLAN_REASON_QSTA_NOT_USE = 37,
1216         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1217         WLAN_REASON_QSTA_TIMEOUT = 39,
1218         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1219         /* 802.11s */
1220         WLAN_REASON_MESH_PEER_CANCELED = 52,
1221         WLAN_REASON_MESH_MAX_PEERS = 53,
1222         WLAN_REASON_MESH_CONFIG = 54,
1223         WLAN_REASON_MESH_CLOSE = 55,
1224         WLAN_REASON_MESH_MAX_RETRIES = 56,
1225         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1226         WLAN_REASON_MESH_INVALID_GTK = 58,
1227         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1228         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1229         WLAN_REASON_MESH_PATH_ERROR = 61,
1230         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1231         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1232         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1233         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1234         WLAN_REASON_MESH_CHAN = 66,
1235 };
1236
1237
1238 /* Information Element IDs */
1239 enum ieee80211_eid {
1240         WLAN_EID_SSID = 0,
1241         WLAN_EID_SUPP_RATES = 1,
1242         WLAN_EID_FH_PARAMS = 2,
1243         WLAN_EID_DS_PARAMS = 3,
1244         WLAN_EID_CF_PARAMS = 4,
1245         WLAN_EID_TIM = 5,
1246         WLAN_EID_IBSS_PARAMS = 6,
1247         WLAN_EID_CHALLENGE = 16,
1248
1249         WLAN_EID_COUNTRY = 7,
1250         WLAN_EID_HP_PARAMS = 8,
1251         WLAN_EID_HP_TABLE = 9,
1252         WLAN_EID_REQUEST = 10,
1253
1254         WLAN_EID_QBSS_LOAD = 11,
1255         WLAN_EID_EDCA_PARAM_SET = 12,
1256         WLAN_EID_TSPEC = 13,
1257         WLAN_EID_TCLAS = 14,
1258         WLAN_EID_SCHEDULE = 15,
1259         WLAN_EID_TS_DELAY = 43,
1260         WLAN_EID_TCLAS_PROCESSING = 44,
1261         WLAN_EID_QOS_CAPA = 46,
1262         /* 802.11z */
1263         WLAN_EID_LINK_ID = 101,
1264         /* 802.11s */
1265         WLAN_EID_MESH_CONFIG = 113,
1266         WLAN_EID_MESH_ID = 114,
1267         WLAN_EID_LINK_METRIC_REPORT = 115,
1268         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1269         WLAN_EID_PEER_MGMT = 117,
1270         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1271         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1272         WLAN_EID_BEACON_TIMING = 120,
1273         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1274         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1275         WLAN_EID_MCCAOP_ADVERT = 123,
1276         WLAN_EID_MCCAOP_TEARDOWN = 124,
1277         WLAN_EID_GANN = 125,
1278         WLAN_EID_RANN = 126,
1279         WLAN_EID_PREQ = 130,
1280         WLAN_EID_PREP = 131,
1281         WLAN_EID_PERR = 132,
1282         WLAN_EID_PXU = 137,
1283         WLAN_EID_PXUC = 138,
1284         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1285         WLAN_EID_MIC = 140,
1286
1287         WLAN_EID_PWR_CONSTRAINT = 32,
1288         WLAN_EID_PWR_CAPABILITY = 33,
1289         WLAN_EID_TPC_REQUEST = 34,
1290         WLAN_EID_TPC_REPORT = 35,
1291         WLAN_EID_SUPPORTED_CHANNELS = 36,
1292         WLAN_EID_CHANNEL_SWITCH = 37,
1293         WLAN_EID_MEASURE_REQUEST = 38,
1294         WLAN_EID_MEASURE_REPORT = 39,
1295         WLAN_EID_QUIET = 40,
1296         WLAN_EID_IBSS_DFS = 41,
1297
1298         WLAN_EID_ERP_INFO = 42,
1299         WLAN_EID_EXT_SUPP_RATES = 50,
1300
1301         WLAN_EID_HT_CAPABILITY = 45,
1302         WLAN_EID_HT_OPERATION = 61,
1303
1304         WLAN_EID_RSN = 48,
1305         WLAN_EID_MMIE = 76,
1306         WLAN_EID_WPA = 221,
1307         WLAN_EID_GENERIC = 221,
1308         WLAN_EID_VENDOR_SPECIFIC = 221,
1309         WLAN_EID_QOS_PARAMETER = 222,
1310
1311         WLAN_EID_AP_CHAN_REPORT = 51,
1312         WLAN_EID_NEIGHBOR_REPORT = 52,
1313         WLAN_EID_RCPI = 53,
1314         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1315         WLAN_EID_ANTENNA_INFO = 64,
1316         WLAN_EID_RSNI = 65,
1317         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1318         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1319         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1320         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1321         WLAN_EID_MULTIPLE_BSSID = 71,
1322         WLAN_EID_BSS_COEX_2040 = 72,
1323         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1324         WLAN_EID_EXT_CAPABILITY = 127,
1325
1326         WLAN_EID_MOBILITY_DOMAIN = 54,
1327         WLAN_EID_FAST_BSS_TRANSITION = 55,
1328         WLAN_EID_TIMEOUT_INTERVAL = 56,
1329         WLAN_EID_RIC_DATA = 57,
1330         WLAN_EID_RIC_DESCRIPTOR = 75,
1331
1332         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1333         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1334         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1335 };
1336
1337 /* Action category code */
1338 enum ieee80211_category {
1339         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1340         WLAN_CATEGORY_QOS = 1,
1341         WLAN_CATEGORY_DLS = 2,
1342         WLAN_CATEGORY_BACK = 3,
1343         WLAN_CATEGORY_PUBLIC = 4,
1344         WLAN_CATEGORY_HT = 7,
1345         WLAN_CATEGORY_SA_QUERY = 8,
1346         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1347         WLAN_CATEGORY_TDLS = 12,
1348         WLAN_CATEGORY_MESH_ACTION = 13,
1349         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1350         WLAN_CATEGORY_SELF_PROTECTED = 15,
1351         WLAN_CATEGORY_WMM = 17,
1352         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1353         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1354 };
1355
1356 /* SPECTRUM_MGMT action code */
1357 enum ieee80211_spectrum_mgmt_actioncode {
1358         WLAN_ACTION_SPCT_MSR_REQ = 0,
1359         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1360         WLAN_ACTION_SPCT_TPC_REQ = 2,
1361         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1362         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1363 };
1364
1365 /* HT action codes */
1366 enum ieee80211_ht_actioncode {
1367         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1368         WLAN_HT_ACTION_SMPS = 1,
1369         WLAN_HT_ACTION_PSMP = 2,
1370         WLAN_HT_ACTION_PCO_PHASE = 3,
1371         WLAN_HT_ACTION_CSI = 4,
1372         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1373         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1374         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1375 };
1376
1377 /* Self Protected Action codes */
1378 enum ieee80211_self_protected_actioncode {
1379         WLAN_SP_RESERVED = 0,
1380         WLAN_SP_MESH_PEERING_OPEN = 1,
1381         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1382         WLAN_SP_MESH_PEERING_CLOSE = 3,
1383         WLAN_SP_MGK_INFORM = 4,
1384         WLAN_SP_MGK_ACK = 5,
1385 };
1386
1387 /* Mesh action codes */
1388 enum ieee80211_mesh_actioncode {
1389         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1390         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1391         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1392         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1393         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1394         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1395         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1396         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1397         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1398         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1399         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1400 };
1401
1402 /* Security key length */
1403 enum ieee80211_key_len {
1404         WLAN_KEY_LEN_WEP40 = 5,
1405         WLAN_KEY_LEN_WEP104 = 13,
1406         WLAN_KEY_LEN_CCMP = 16,
1407         WLAN_KEY_LEN_TKIP = 32,
1408         WLAN_KEY_LEN_AES_CMAC = 16,
1409 };
1410
1411 /* Public action codes */
1412 enum ieee80211_pub_actioncode {
1413         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1414 };
1415
1416 /* TDLS action codes */
1417 enum ieee80211_tdls_actioncode {
1418         WLAN_TDLS_SETUP_REQUEST = 0,
1419         WLAN_TDLS_SETUP_RESPONSE = 1,
1420         WLAN_TDLS_SETUP_CONFIRM = 2,
1421         WLAN_TDLS_TEARDOWN = 3,
1422         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1423         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1424         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1425         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1426         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1427         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1428         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1429 };
1430
1431 /*
1432  * TDLS capabililites to be enabled in the 5th byte of the
1433  * @WLAN_EID_EXT_CAPABILITY information element
1434  */
1435 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1436 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1437
1438 /* TDLS specific payload type in the LLC/SNAP header */
1439 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1440
1441 /**
1442  * enum - mesh synchronization method identifier
1443  *
1444  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1445  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1446  * that will be specified in a vendor specific information element
1447  */
1448 enum {
1449         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1450         IEEE80211_SYNC_METHOD_VENDOR = 255,
1451 };
1452
1453 /**
1454  * enum - mesh path selection protocol identifier
1455  *
1456  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1457  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1458  * be specified in a vendor specific information element
1459  */
1460 enum {
1461         IEEE80211_PATH_PROTOCOL_HWMP = 1,
1462         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1463 };
1464
1465 /**
1466  * enum - mesh path selection metric identifier
1467  *
1468  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1469  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1470  * specified in a vendor specific information element
1471  */
1472 enum {
1473         IEEE80211_PATH_METRIC_AIRTIME = 1,
1474         IEEE80211_PATH_METRIC_VENDOR = 255,
1475 };
1476
1477
1478 /*
1479  * IEEE 802.11-2007 7.3.2.9 Country information element
1480  *
1481  * Minimum length is 8 octets, ie len must be evenly
1482  * divisible by 2
1483  */
1484
1485 /* Although the spec says 8 I'm seeing 6 in practice */
1486 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1487
1488 /* The Country String field of the element shall be 3 octets in length */
1489 #define IEEE80211_COUNTRY_STRING_LEN    3
1490
1491 /*
1492  * For regulatory extension stuff see IEEE 802.11-2007
1493  * Annex I (page 1141) and Annex J (page 1147). Also
1494  * review 7.3.2.9.
1495  *
1496  * When dot11RegulatoryClassesRequired is true and the
1497  * first_channel/reg_extension_id is >= 201 then the IE
1498  * compromises of the 'ext' struct represented below:
1499  *
1500  *  - Regulatory extension ID - when generating IE this just needs
1501  *    to be monotonically increasing for each triplet passed in
1502  *    the IE
1503  *  - Regulatory class - index into set of rules
1504  *  - Coverage class - index into air propagation time (Table 7-27),
1505  *    in microseconds, you can compute the air propagation time from
1506  *    the index by multiplying by 3, so index 10 yields a propagation
1507  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1508  *    yet. A value of 0 inicates air propagation of <= 1 us.
1509  *
1510  *  See also Table I.2 for Emission limit sets and table
1511  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1512  *  a reg_class to an emission limit set and behavior limit set.
1513  */
1514 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1515
1516 /*
1517  *  Channels numbers in the IE must be monotonically increasing
1518  *  if dot11RegulatoryClassesRequired is not true.
1519  *
1520  *  If dot11RegulatoryClassesRequired is true consecutive
1521  *  subband triplets following a regulatory triplet shall
1522  *  have monotonically increasing first_channel number fields.
1523  *
1524  *  Channel numbers shall not overlap.
1525  *
1526  *  Note that max_power is signed.
1527  */
1528 struct ieee80211_country_ie_triplet {
1529         union {
1530                 struct {
1531                         u8 first_channel;
1532                         u8 num_channels;
1533                         s8 max_power;
1534                 } __attribute__ ((packed)) chans;
1535                 struct {
1536                         u8 reg_extension_id;
1537                         u8 reg_class;
1538                         u8 coverage_class;
1539                 } __attribute__ ((packed)) ext;
1540         };
1541 } __attribute__ ((packed));
1542
1543 enum ieee80211_timeout_interval_type {
1544         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1545         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1546         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1547 };
1548
1549 /* BACK action code */
1550 enum ieee80211_back_actioncode {
1551         WLAN_ACTION_ADDBA_REQ = 0,
1552         WLAN_ACTION_ADDBA_RESP = 1,
1553         WLAN_ACTION_DELBA = 2,
1554 };
1555
1556 /* BACK (block-ack) parties */
1557 enum ieee80211_back_parties {
1558         WLAN_BACK_RECIPIENT = 0,
1559         WLAN_BACK_INITIATOR = 1,
1560 };
1561
1562 /* SA Query action */
1563 enum ieee80211_sa_query_action {
1564         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1565         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1566 };
1567
1568
1569 /* cipher suite selectors */
1570 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1571 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1572 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1573 /* reserved:                            0x000FAC03 */
1574 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1575 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1576 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1577
1578 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1579
1580 /* AKM suite selectors */
1581 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1582 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1583 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1584 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1585
1586 #define WLAN_MAX_KEY_LEN                32
1587
1588 #define WLAN_PMKID_LEN                  16
1589
1590 #define WLAN_OUI_WFA                    0x506f9a
1591 #define WLAN_OUI_TYPE_WFA_P2P           9
1592
1593 /*
1594  * WMM/802.11e Tspec Element
1595  */
1596 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1597 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1598
1599 enum ieee80211_tspec_status_code {
1600         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1601         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1602 };
1603
1604 struct ieee80211_tspec_ie {
1605         u8 element_id;
1606         u8 len;
1607         u8 oui[3];
1608         u8 oui_type;
1609         u8 oui_subtype;
1610         u8 version;
1611         __le16 tsinfo;
1612         u8 tsinfo_resvd;
1613         __le16 nominal_msdu;
1614         __le16 max_msdu;
1615         __le32 min_service_int;
1616         __le32 max_service_int;
1617         __le32 inactivity_int;
1618         __le32 suspension_int;
1619         __le32 service_start_time;
1620         __le32 min_data_rate;
1621         __le32 mean_data_rate;
1622         __le32 peak_data_rate;
1623         __le32 max_burst_size;
1624         __le32 delay_bound;
1625         __le32 min_phy_rate;
1626         __le16 sba;
1627         __le16 medium_time;
1628 } __packed;
1629
1630 /**
1631  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1632  * @hdr: the frame
1633  *
1634  * The qos ctrl bytes come after the frame_control, duration, seq_num
1635  * and 3 or 4 addresses of length ETH_ALEN.
1636  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1637  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1638  */
1639 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1640 {
1641         if (ieee80211_has_a4(hdr->frame_control))
1642                 return (u8 *)hdr + 30;
1643         else
1644                 return (u8 *)hdr + 24;
1645 }
1646
1647 /**
1648  * ieee80211_get_SA - get pointer to SA
1649  * @hdr: the frame
1650  *
1651  * Given an 802.11 frame, this function returns the offset
1652  * to the source address (SA). It does not verify that the
1653  * header is long enough to contain the address, and the
1654  * header must be long enough to contain the frame control
1655  * field.
1656  */
1657 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1658 {
1659         if (ieee80211_has_a4(hdr->frame_control))
1660                 return hdr->addr4;
1661         if (ieee80211_has_fromds(hdr->frame_control))
1662                 return hdr->addr3;
1663         return hdr->addr2;
1664 }
1665
1666 /**
1667  * ieee80211_get_DA - get pointer to DA
1668  * @hdr: the frame
1669  *
1670  * Given an 802.11 frame, this function returns the offset
1671  * to the destination address (DA). It does not verify that
1672  * the header is long enough to contain the address, and the
1673  * header must be long enough to contain the frame control
1674  * field.
1675  */
1676 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1677 {
1678         if (ieee80211_has_tods(hdr->frame_control))
1679                 return hdr->addr3;
1680         else
1681                 return hdr->addr1;
1682 }
1683
1684 /**
1685  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1686  * @hdr: the frame (buffer must include at least the first octet of payload)
1687  */
1688 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1689 {
1690         if (ieee80211_is_disassoc(hdr->frame_control) ||
1691             ieee80211_is_deauth(hdr->frame_control))
1692                 return true;
1693
1694         if (ieee80211_is_action(hdr->frame_control)) {
1695                 u8 *category;
1696
1697                 /*
1698                  * Action frames, excluding Public Action frames, are Robust
1699                  * Management Frames. However, if we are looking at a Protected
1700                  * frame, skip the check since the data may be encrypted and
1701                  * the frame has already been found to be a Robust Management
1702                  * Frame (by the other end).
1703                  */
1704                 if (ieee80211_has_protected(hdr->frame_control))
1705                         return true;
1706                 category = ((u8 *) hdr) + 24;
1707                 return *category != WLAN_CATEGORY_PUBLIC &&
1708                         *category != WLAN_CATEGORY_HT &&
1709                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1710                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1711         }
1712
1713         return false;
1714 }
1715
1716 /**
1717  * ieee80211_is_public_action - check if frame is a public action frame
1718  * @hdr: the frame
1719  * @len: length of the frame
1720  */
1721 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1722                                               size_t len)
1723 {
1724         struct ieee80211_mgmt *mgmt = (void *)hdr;
1725
1726         if (len < IEEE80211_MIN_ACTION_SIZE)
1727                 return false;
1728         if (!ieee80211_is_action(hdr->frame_control))
1729                 return false;
1730         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1731 }
1732
1733 /**
1734  * ieee80211_fhss_chan_to_freq - get channel frequency
1735  * @channel: the FHSS channel
1736  *
1737  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1738  * Ref IEEE 802.11-2007 section 14.6
1739  */
1740 static inline int ieee80211_fhss_chan_to_freq(int channel)
1741 {
1742         if ((channel > 1) && (channel < 96))
1743                 return channel + 2400;
1744         else
1745                 return -1;
1746 }
1747
1748 /**
1749  * ieee80211_freq_to_fhss_chan - get channel
1750  * @freq: the channels frequency
1751  *
1752  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1753  * Ref IEEE 802.11-2007 section 14.6
1754  */
1755 static inline int ieee80211_freq_to_fhss_chan(int freq)
1756 {
1757         if ((freq > 2401) && (freq < 2496))
1758                 return freq - 2400;
1759         else
1760                 return -1;
1761 }
1762
1763 /**
1764  * ieee80211_dsss_chan_to_freq - get channel center frequency
1765  * @channel: the DSSS channel
1766  *
1767  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1768  * Ref IEEE 802.11-2007 section 15.6
1769  */
1770 static inline int ieee80211_dsss_chan_to_freq(int channel)
1771 {
1772         if ((channel > 0) && (channel < 14))
1773                 return 2407 + (channel * 5);
1774         else if (channel == 14)
1775                 return 2484;
1776         else
1777                 return -1;
1778 }
1779
1780 /**
1781  * ieee80211_freq_to_dsss_chan - get channel
1782  * @freq: the frequency
1783  *
1784  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1785  * Ref IEEE 802.11-2007 section 15.6
1786  *
1787  * This routine selects the channel with the closest center frequency.
1788  */
1789 static inline int ieee80211_freq_to_dsss_chan(int freq)
1790 {
1791         if ((freq >= 2410) && (freq < 2475))
1792                 return (freq - 2405) / 5;
1793         else if ((freq >= 2482) && (freq < 2487))
1794                 return 14;
1795         else
1796                 return -1;
1797 }
1798
1799 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1800  * Ref IEEE 802.11-2007 section 18.4.6.2
1801  *
1802  * The channels and frequencies are the same as those defined for DSSS
1803  */
1804 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1805 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1806
1807 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1808  * Ref IEEE 802.11-2007 section 19.4.2
1809  */
1810 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1811 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1812
1813 /**
1814  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1815  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1816  * @channel: the OFDM channel
1817  *
1818  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1819  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1820  */
1821 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1822 {
1823         if ((channel > 0) && (channel <= 200) &&
1824             (s_freq >= 4000))
1825                 return s_freq + (channel * 5);
1826         else
1827                 return -1;
1828 }
1829
1830 /**
1831  * ieee80211_freq_to_ofdm_channel - get channel
1832  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1833  * @freq: the frequency
1834  *
1835  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1836  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1837  *
1838  * This routine selects the channel with the closest center frequency.
1839  */
1840 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1841 {
1842         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1843             (s_freq >= 4000))
1844                 return (freq + 2 - s_freq) / 5;
1845         else
1846                 return -1;
1847 }
1848
1849 /**
1850  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1851  * @tu: the TUs
1852  */
1853 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1854 {
1855         return 1024 * tu;
1856 }
1857
1858 /**
1859  * ieee80211_check_tim - check if AID bit is set in TIM
1860  * @tim: the TIM IE
1861  * @tim_len: length of the TIM IE
1862  * @aid: the AID to look for
1863  */
1864 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1865                                        u8 tim_len, u16 aid)
1866 {
1867         u8 mask;
1868         u8 index, indexn1, indexn2;
1869
1870         if (unlikely(!tim || tim_len < sizeof(*tim)))
1871                 return false;
1872
1873         aid &= 0x3fff;
1874         index = aid / 8;
1875         mask  = 1 << (aid & 7);
1876
1877         indexn1 = tim->bitmap_ctrl & 0xfe;
1878         indexn2 = tim_len + indexn1 - 4;
1879
1880         if (index < indexn1 || index > indexn2)
1881                 return false;
1882
1883         index -= indexn1;
1884
1885         return !!(tim->virtual_map[index] & mask);
1886 }
1887
1888 #endif /* LINUX_IEEE80211_H */