linux/include/linux/ieee80211.h
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   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#define IEEE80211_FCTL_CTL_EXT          0x0f00
  51
  52#define IEEE80211_SCTL_FRAG             0x000F
  53#define IEEE80211_SCTL_SEQ              0xFFF0
  54
  55#define IEEE80211_FTYPE_MGMT            0x0000
  56#define IEEE80211_FTYPE_CTL             0x0004
  57#define IEEE80211_FTYPE_DATA            0x0008
  58#define IEEE80211_FTYPE_EXT             0x000c
  59
  60/* management */
  61#define IEEE80211_STYPE_ASSOC_REQ       0x0000
  62#define IEEE80211_STYPE_ASSOC_RESP      0x0010
  63#define IEEE80211_STYPE_REASSOC_REQ     0x0020
  64#define IEEE80211_STYPE_REASSOC_RESP    0x0030
  65#define IEEE80211_STYPE_PROBE_REQ       0x0040
  66#define IEEE80211_STYPE_PROBE_RESP      0x0050
  67#define IEEE80211_STYPE_BEACON          0x0080
  68#define IEEE80211_STYPE_ATIM            0x0090
  69#define IEEE80211_STYPE_DISASSOC        0x00A0
  70#define IEEE80211_STYPE_AUTH            0x00B0
  71#define IEEE80211_STYPE_DEAUTH          0x00C0
  72#define IEEE80211_STYPE_ACTION          0x00D0
  73
  74/* control */
  75#define IEEE80211_STYPE_CTL_EXT         0x0060
  76#define IEEE80211_STYPE_BACK_REQ        0x0080
  77#define IEEE80211_STYPE_BACK            0x0090
  78#define IEEE80211_STYPE_PSPOLL          0x00A0
  79#define IEEE80211_STYPE_RTS             0x00B0
  80#define IEEE80211_STYPE_CTS             0x00C0
  81#define IEEE80211_STYPE_ACK             0x00D0
  82#define IEEE80211_STYPE_CFEND           0x00E0
  83#define IEEE80211_STYPE_CFENDACK        0x00F0
  84
  85/* data */
  86#define IEEE80211_STYPE_DATA                    0x0000
  87#define IEEE80211_STYPE_DATA_CFACK              0x0010
  88#define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  89#define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  90#define IEEE80211_STYPE_NULLFUNC                0x0040
  91#define IEEE80211_STYPE_CFACK                   0x0050
  92#define IEEE80211_STYPE_CFPOLL                  0x0060
  93#define IEEE80211_STYPE_CFACKPOLL               0x0070
  94#define IEEE80211_STYPE_QOS_DATA                0x0080
  95#define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  96#define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  97#define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  98#define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  99#define IEEE80211_STYPE_QOS_CFACK               0x00D0
 100#define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
 101#define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
 102
 103/* extension, added by 802.11ad */
 104#define IEEE80211_STYPE_DMG_BEACON              0x0000
 105
 106/* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 107#define IEEE80211_CTL_EXT_POLL          0x2000
 108#define IEEE80211_CTL_EXT_SPR           0x3000
 109#define IEEE80211_CTL_EXT_GRANT 0x4000
 110#define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 111#define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 112#define IEEE80211_CTL_EXT_SSW           0x8000
 113#define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 114#define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 115
 116/* miscellaneous IEEE 802.11 constants */
 117#define IEEE80211_MAX_FRAG_THRESHOLD    2352
 118#define IEEE80211_MAX_RTS_THRESHOLD     2353
 119#define IEEE80211_MAX_AID               2007
 120#define IEEE80211_MAX_TIM_LEN           251
 121/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 122   6.2.1.1.2.
 123
 124   802.11e clarifies the figure in section 7.1.2. The frame body is
 125   up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 126#define IEEE80211_MAX_DATA_LEN          2304
 127/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 128#define IEEE80211_MAX_FRAME_LEN         2352
 129
 130#define IEEE80211_MAX_SSID_LEN          32
 131
 132#define IEEE80211_MAX_MESH_ID_LEN       32
 133
 134#define IEEE80211_NUM_TIDS              16
 135
 136#define IEEE80211_QOS_CTL_LEN           2
 137/* 1d tag mask */
 138#define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 139/* TID mask */
 140#define IEEE80211_QOS_CTL_TID_MASK              0x000f
 141/* EOSP */
 142#define IEEE80211_QOS_CTL_EOSP                  0x0010
 143/* ACK policy */
 144#define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 145#define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 146#define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 147#define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 148#define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 149/* A-MSDU 802.11n */
 150#define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 151/* Mesh Control 802.11s */
 152#define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 153
 154/* U-APSD queue for WMM IEs sent by AP */
 155#define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 156#define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 157
 158/* U-APSD queues for WMM IEs sent by STA */
 159#define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 160#define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 161#define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 162#define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 163#define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 164
 165/* U-APSD max SP length for WMM IEs sent by STA */
 166#define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 167#define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 168#define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 169#define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 170#define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 171#define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 172
 173#define IEEE80211_HT_CTL_LEN            4
 174
 175struct ieee80211_hdr {
 176        __le16 frame_control;
 177        __le16 duration_id;
 178        u8 addr1[6];
 179        u8 addr2[6];
 180        u8 addr3[6];
 181        __le16 seq_ctrl;
 182        u8 addr4[6];
 183} __attribute__ ((packed));
 184
 185struct ieee80211_hdr_3addr {
 186        __le16 frame_control;
 187        __le16 duration_id;
 188        u8 addr1[6];
 189        u8 addr2[6];
 190        u8 addr3[6];
 191        __le16 seq_ctrl;
 192} __attribute__ ((packed));
 193
 194struct ieee80211_qos_hdr {
 195        __le16 frame_control;
 196        __le16 duration_id;
 197        u8 addr1[6];
 198        u8 addr2[6];
 199        u8 addr3[6];
 200        __le16 seq_ctrl;
 201        __le16 qos_ctrl;
 202} __attribute__ ((packed));
 203
 204/**
 205 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 206 * @fc: frame control bytes in little-endian byteorder
 207 */
 208static inline int ieee80211_has_tods(__le16 fc)
 209{
 210        return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 211}
 212
 213/**
 214 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 215 * @fc: frame control bytes in little-endian byteorder
 216 */
 217static inline int ieee80211_has_fromds(__le16 fc)
 218{
 219        return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 220}
 221
 222/**
 223 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 224 * @fc: frame control bytes in little-endian byteorder
 225 */
 226static inline int ieee80211_has_a4(__le16 fc)
 227{
 228        __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 229        return (fc & tmp) == tmp;
 230}
 231
 232/**
 233 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 234 * @fc: frame control bytes in little-endian byteorder
 235 */
 236static inline int ieee80211_has_morefrags(__le16 fc)
 237{
 238        return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 239}
 240
 241/**
 242 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 243 * @fc: frame control bytes in little-endian byteorder
 244 */
 245static inline int ieee80211_has_retry(__le16 fc)
 246{
 247        return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 248}
 249
 250/**
 251 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 252 * @fc: frame control bytes in little-endian byteorder
 253 */
 254static inline int ieee80211_has_pm(__le16 fc)
 255{
 256        return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 257}
 258
 259/**
 260 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 261 * @fc: frame control bytes in little-endian byteorder
 262 */
 263static inline int ieee80211_has_moredata(__le16 fc)
 264{
 265        return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 266}
 267
 268/**
 269 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 270 * @fc: frame control bytes in little-endian byteorder
 271 */
 272static inline int ieee80211_has_protected(__le16 fc)
 273{
 274        return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 275}
 276
 277/**
 278 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 279 * @fc: frame control bytes in little-endian byteorder
 280 */
 281static inline int ieee80211_has_order(__le16 fc)
 282{
 283        return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 284}
 285
 286/**
 287 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 288 * @fc: frame control bytes in little-endian byteorder
 289 */
 290static inline int ieee80211_is_mgmt(__le16 fc)
 291{
 292        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 293               cpu_to_le16(IEEE80211_FTYPE_MGMT);
 294}
 295
 296/**
 297 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 298 * @fc: frame control bytes in little-endian byteorder
 299 */
 300static inline int ieee80211_is_ctl(__le16 fc)
 301{
 302        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 303               cpu_to_le16(IEEE80211_FTYPE_CTL);
 304}
 305
 306/**
 307 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 308 * @fc: frame control bytes in little-endian byteorder
 309 */
 310static inline int ieee80211_is_data(__le16 fc)
 311{
 312        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 313               cpu_to_le16(IEEE80211_FTYPE_DATA);
 314}
 315
 316/**
 317 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 318 * @fc: frame control bytes in little-endian byteorder
 319 */
 320static inline int ieee80211_is_data_qos(__le16 fc)
 321{
 322        /*
 323         * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 324         * to check the one bit
 325         */
 326        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 327               cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 328}
 329
 330/**
 331 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 332 * @fc: frame control bytes in little-endian byteorder
 333 */
 334static inline int ieee80211_is_data_present(__le16 fc)
 335{
 336        /*
 337         * mask with 0x40 and test that that bit is clear to only return true
 338         * for the data-containing substypes.
 339         */
 340        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 341               cpu_to_le16(IEEE80211_FTYPE_DATA);
 342}
 343
 344/**
 345 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 346 * @fc: frame control bytes in little-endian byteorder
 347 */
 348static inline int ieee80211_is_assoc_req(__le16 fc)
 349{
 350        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 351               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 352}
 353
 354/**
 355 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 356 * @fc: frame control bytes in little-endian byteorder
 357 */
 358static inline int ieee80211_is_assoc_resp(__le16 fc)
 359{
 360        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 361               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 362}
 363
 364/**
 365 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 366 * @fc: frame control bytes in little-endian byteorder
 367 */
 368static inline int ieee80211_is_reassoc_req(__le16 fc)
 369{
 370        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 371               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 372}
 373
 374/**
 375 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 376 * @fc: frame control bytes in little-endian byteorder
 377 */
 378static inline int ieee80211_is_reassoc_resp(__le16 fc)
 379{
 380        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 381               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 382}
 383
 384/**
 385 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 386 * @fc: frame control bytes in little-endian byteorder
 387 */
 388static inline int ieee80211_is_probe_req(__le16 fc)
 389{
 390        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 391               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 392}
 393
 394/**
 395 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 396 * @fc: frame control bytes in little-endian byteorder
 397 */
 398static inline int ieee80211_is_probe_resp(__le16 fc)
 399{
 400        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 401               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 402}
 403
 404/**
 405 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 406 * @fc: frame control bytes in little-endian byteorder
 407 */
 408static inline int ieee80211_is_beacon(__le16 fc)
 409{
 410        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 411               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 412}
 413
 414/**
 415 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 416 * @fc: frame control bytes in little-endian byteorder
 417 */
 418static inline int ieee80211_is_atim(__le16 fc)
 419{
 420        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 421               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 422}
 423
 424/**
 425 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 426 * @fc: frame control bytes in little-endian byteorder
 427 */
 428static inline int ieee80211_is_disassoc(__le16 fc)
 429{
 430        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 431               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 432}
 433
 434/**
 435 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 436 * @fc: frame control bytes in little-endian byteorder
 437 */
 438static inline int ieee80211_is_auth(__le16 fc)
 439{
 440        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 441               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 442}
 443
 444/**
 445 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 446 * @fc: frame control bytes in little-endian byteorder
 447 */
 448static inline int ieee80211_is_deauth(__le16 fc)
 449{
 450        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 451               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 452}
 453
 454/**
 455 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 456 * @fc: frame control bytes in little-endian byteorder
 457 */
 458static inline int ieee80211_is_action(__le16 fc)
 459{
 460        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 461               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 462}
 463
 464/**
 465 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 466 * @fc: frame control bytes in little-endian byteorder
 467 */
 468static inline int ieee80211_is_back_req(__le16 fc)
 469{
 470        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 471               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 472}
 473
 474/**
 475 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 476 * @fc: frame control bytes in little-endian byteorder
 477 */
 478static inline int ieee80211_is_back(__le16 fc)
 479{
 480        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 481               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 482}
 483
 484/**
 485 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 486 * @fc: frame control bytes in little-endian byteorder
 487 */
 488static inline int ieee80211_is_pspoll(__le16 fc)
 489{
 490        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 491               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 492}
 493
 494/**
 495 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 496 * @fc: frame control bytes in little-endian byteorder
 497 */
 498static inline int ieee80211_is_rts(__le16 fc)
 499{
 500        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 501               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 502}
 503
 504/**
 505 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 506 * @fc: frame control bytes in little-endian byteorder
 507 */
 508static inline int ieee80211_is_cts(__le16 fc)
 509{
 510        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 511               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 512}
 513
 514/**
 515 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 516 * @fc: frame control bytes in little-endian byteorder
 517 */
 518static inline int ieee80211_is_ack(__le16 fc)
 519{
 520        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 521               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 522}
 523
 524/**
 525 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 526 * @fc: frame control bytes in little-endian byteorder
 527 */
 528static inline int ieee80211_is_cfend(__le16 fc)
 529{
 530        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 531               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 532}
 533
 534/**
 535 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 536 * @fc: frame control bytes in little-endian byteorder
 537 */
 538static inline int ieee80211_is_cfendack(__le16 fc)
 539{
 540        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 541               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 542}
 543
 544/**
 545 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 546 * @fc: frame control bytes in little-endian byteorder
 547 */
 548static inline int ieee80211_is_nullfunc(__le16 fc)
 549{
 550        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 551               cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 552}
 553
 554/**
 555 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 556 * @fc: frame control bytes in little-endian byteorder
 557 */
 558static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 559{
 560        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 561               cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 562}
 563
 564/**
 565 * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 566 * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 567 */
 568static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 569{
 570        return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 571}
 572
 573struct ieee80211s_hdr {
 574        u8 flags;
 575        u8 ttl;
 576        __le32 seqnum;
 577        u8 eaddr1[6];
 578        u8 eaddr2[6];
 579} __attribute__ ((packed));
 580
 581/* Mesh flags */
 582#define MESH_FLAGS_AE_A4        0x1
 583#define MESH_FLAGS_AE_A5_A6     0x2
 584#define MESH_FLAGS_AE           0x3
 585#define MESH_FLAGS_PS_DEEP      0x4
 586
 587/**
 588 * enum ieee80211_preq_flags - mesh PREQ element flags
 589 *
 590 * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 591 */
 592enum ieee80211_preq_flags {
 593        IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 594};
 595
 596/**
 597 * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 598 *
 599 * @IEEE80211_PREQ_TO_FLAG: target only subfield
 600 * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 601 */
 602enum ieee80211_preq_target_flags {
 603        IEEE80211_PREQ_TO_FLAG  = 1<<0,
 604        IEEE80211_PREQ_USN_FLAG = 1<<2,
 605};
 606
 607/**
 608 * struct ieee80211_quiet_ie
 609 *
 610 * This structure refers to "Quiet information element"
 611 */
 612struct ieee80211_quiet_ie {
 613        u8 count;
 614        u8 period;
 615        __le16 duration;
 616        __le16 offset;
 617} __attribute__ ((packed));
 618
 619/**
 620 * struct ieee80211_msrment_ie
 621 *
 622 * This structure refers to "Measurement Request/Report information element"
 623 */
 624struct ieee80211_msrment_ie {
 625        u8 token;
 626        u8 mode;
 627        u8 type;
 628        u8 request[0];
 629} __attribute__ ((packed));
 630
 631/**
 632 * struct ieee80211_channel_sw_ie
 633 *
 634 * This structure refers to "Channel Switch Announcement information element"
 635 */
 636struct ieee80211_channel_sw_ie {
 637        u8 mode;
 638        u8 new_ch_num;
 639        u8 count;
 640} __attribute__ ((packed));
 641
 642/**
 643 * struct ieee80211_tim
 644 *
 645 * This structure refers to "Traffic Indication Map information element"
 646 */
 647struct ieee80211_tim_ie {
 648        u8 dtim_count;
 649        u8 dtim_period;
 650        u8 bitmap_ctrl;
 651        /* variable size: 1 - 251 bytes */
 652        u8 virtual_map[1];
 653} __attribute__ ((packed));
 654
 655/**
 656 * struct ieee80211_meshconf_ie
 657 *
 658 * This structure refers to "Mesh Configuration information element"
 659 */
 660struct ieee80211_meshconf_ie {
 661        u8 meshconf_psel;
 662        u8 meshconf_pmetric;
 663        u8 meshconf_congest;
 664        u8 meshconf_synch;
 665        u8 meshconf_auth;
 666        u8 meshconf_form;
 667        u8 meshconf_cap;
 668} __attribute__ ((packed));
 669
 670/**
 671 * enum mesh_config_capab_flags - Mesh Configuration IE capability field flags
 672 *
 673 * @IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish
 674 *      additional mesh peerings with other mesh STAs
 675 * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs
 676 * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure
 677 *      is ongoing
 678 */
 679enum mesh_config_capab_flags {
 680        IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS          = 0x01,
 681        IEEE80211_MESHCONF_CAPAB_FORWARDING             = 0x08,
 682        IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING         = 0x20,
 683};
 684
 685/**
 686 * struct ieee80211_rann_ie
 687 *
 688 * This structure refers to "Root Announcement information element"
 689 */
 690struct ieee80211_rann_ie {
 691        u8 rann_flags;
 692        u8 rann_hopcount;
 693        u8 rann_ttl;
 694        u8 rann_addr[6];
 695        __le32 rann_seq;
 696        __le32 rann_interval;
 697        __le32 rann_metric;
 698} __attribute__ ((packed));
 699
 700enum ieee80211_rann_flags {
 701        RANN_FLAG_IS_GATE = 1 << 0,
 702};
 703
 704#define WLAN_SA_QUERY_TR_ID_LEN 2
 705
 706struct ieee80211_mgmt {
 707        __le16 frame_control;
 708        __le16 duration;
 709        u8 da[6];
 710        u8 sa[6];
 711        u8 bssid[6];
 712        __le16 seq_ctrl;
 713        union {
 714                struct {
 715                        __le16 auth_alg;
 716                        __le16 auth_transaction;
 717                        __le16 status_code;
 718                        /* possibly followed by Challenge text */
 719                        u8 variable[0];
 720                } __attribute__ ((packed)) auth;
 721                struct {
 722                        __le16 reason_code;
 723                } __attribute__ ((packed)) deauth;
 724                struct {
 725                        __le16 capab_info;
 726                        __le16 listen_interval;
 727                        /* followed by SSID and Supported rates */
 728                        u8 variable[0];
 729                } __attribute__ ((packed)) assoc_req;
 730                struct {
 731                        __le16 capab_info;
 732                        __le16 status_code;
 733                        __le16 aid;
 734                        /* followed by Supported rates */
 735                        u8 variable[0];
 736                } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 737                struct {
 738                        __le16 capab_info;
 739                        __le16 listen_interval;
 740                        u8 current_ap[6];
 741                        /* followed by SSID and Supported rates */
 742                        u8 variable[0];
 743                } __attribute__ ((packed)) reassoc_req;
 744                struct {
 745                        __le16 reason_code;
 746                } __attribute__ ((packed)) disassoc;
 747                struct {
 748                        __le64 timestamp;
 749                        __le16 beacon_int;
 750                        __le16 capab_info;
 751                        /* followed by some of SSID, Supported rates,
 752                         * FH Params, DS Params, CF Params, IBSS Params, TIM */
 753                        u8 variable[0];
 754                } __attribute__ ((packed)) beacon;
 755                struct {
 756                        /* only variable items: SSID, Supported rates */
 757                        u8 variable[0];
 758                } __attribute__ ((packed)) probe_req;
 759                struct {
 760                        __le64 timestamp;
 761                        __le16 beacon_int;
 762                        __le16 capab_info;
 763                        /* followed by some of SSID, Supported rates,
 764                         * FH Params, DS Params, CF Params, IBSS Params */
 765                        u8 variable[0];
 766                } __attribute__ ((packed)) probe_resp;
 767                struct {
 768                        u8 category;
 769                        union {
 770                                struct {
 771                                        u8 action_code;
 772                                        u8 dialog_token;
 773                                        u8 status_code;
 774                                        u8 variable[0];
 775                                } __attribute__ ((packed)) wme_action;
 776                                struct{
 777                                        u8 action_code;
 778                                        u8 element_id;
 779                                        u8 length;
 780                                        struct ieee80211_channel_sw_ie sw_elem;
 781                                } __attribute__((packed)) chan_switch;
 782                                struct{
 783                                        u8 action_code;
 784                                        u8 dialog_token;
 785                                        u8 element_id;
 786                                        u8 length;
 787                                        struct ieee80211_msrment_ie msr_elem;
 788                                } __attribute__((packed)) measurement;
 789                                struct{
 790                                        u8 action_code;
 791                                        u8 dialog_token;
 792                                        __le16 capab;
 793                                        __le16 timeout;
 794                                        __le16 start_seq_num;
 795                                } __attribute__((packed)) addba_req;
 796                                struct{
 797                                        u8 action_code;
 798                                        u8 dialog_token;
 799                                        __le16 status;
 800                                        __le16 capab;
 801                                        __le16 timeout;
 802                                } __attribute__((packed)) addba_resp;
 803                                struct{
 804                                        u8 action_code;
 805                                        __le16 params;
 806                                        __le16 reason_code;
 807                                } __attribute__((packed)) delba;
 808                                struct {
 809                                        u8 action_code;
 810                                        u8 variable[0];
 811                                } __attribute__((packed)) self_prot;
 812                                struct{
 813                                        u8 action_code;
 814                                        u8 variable[0];
 815                                } __attribute__((packed)) mesh_action;
 816                                struct {
 817                                        u8 action;
 818                                        u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 819                                } __attribute__ ((packed)) sa_query;
 820                                struct {
 821                                        u8 action;
 822                                        u8 smps_control;
 823                                } __attribute__ ((packed)) ht_smps;
 824                                struct {
 825                                        u8 action_code;
 826                                        u8 dialog_token;
 827                                        __le16 capability;
 828                                        u8 variable[0];
 829                                } __packed tdls_discover_resp;
 830                        } u;
 831                } __attribute__ ((packed)) action;
 832        } u;
 833} __attribute__ ((packed));
 834
 835/* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 836#define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 837
 838/* mgmt header + 1 byte category code */
 839#define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 840
 841
 842/* Management MIC information element (IEEE 802.11w) */
 843struct ieee80211_mmie {
 844        u8 element_id;
 845        u8 length;
 846        __le16 key_id;
 847        u8 sequence_number[6];
 848        u8 mic[8];
 849} __attribute__ ((packed));
 850
 851struct ieee80211_vendor_ie {
 852        u8 element_id;
 853        u8 len;
 854        u8 oui[3];
 855        u8 oui_type;
 856} __packed;
 857
 858/* Control frames */
 859struct ieee80211_rts {
 860        __le16 frame_control;
 861        __le16 duration;
 862        u8 ra[6];
 863        u8 ta[6];
 864} __attribute__ ((packed));
 865
 866struct ieee80211_cts {
 867        __le16 frame_control;
 868        __le16 duration;
 869        u8 ra[6];
 870} __attribute__ ((packed));
 871
 872struct ieee80211_pspoll {
 873        __le16 frame_control;
 874        __le16 aid;
 875        u8 bssid[6];
 876        u8 ta[6];
 877} __attribute__ ((packed));
 878
 879/* TDLS */
 880
 881/* Link-id information element */
 882struct ieee80211_tdls_lnkie {
 883        u8 ie_type; /* Link Identifier IE */
 884        u8 ie_len;
 885        u8 bssid[6];
 886        u8 init_sta[6];
 887        u8 resp_sta[6];
 888} __packed;
 889
 890struct ieee80211_tdls_data {
 891        u8 da[6];
 892        u8 sa[6];
 893        __be16 ether_type;
 894        u8 payload_type;
 895        u8 category;
 896        u8 action_code;
 897        union {
 898                struct {
 899                        u8 dialog_token;
 900                        __le16 capability;
 901                        u8 variable[0];
 902                } __packed setup_req;
 903                struct {
 904                        __le16 status_code;
 905                        u8 dialog_token;
 906                        __le16 capability;
 907                        u8 variable[0];
 908                } __packed setup_resp;
 909                struct {
 910                        __le16 status_code;
 911                        u8 dialog_token;
 912                        u8 variable[0];
 913                } __packed setup_cfm;
 914                struct {
 915                        __le16 reason_code;
 916                        u8 variable[0];
 917                } __packed teardown;
 918                struct {
 919                        u8 dialog_token;
 920                        u8 variable[0];
 921                } __packed discover_req;
 922        } u;
 923} __packed;
 924
 925/*
 926 * Peer-to-Peer IE attribute related definitions.
 927 */
 928/**
 929 * enum ieee80211_p2p_attr_id - identifies type of peer-to-peer attribute.
 930 */
 931enum ieee80211_p2p_attr_id {
 932        IEEE80211_P2P_ATTR_STATUS = 0,
 933        IEEE80211_P2P_ATTR_MINOR_REASON,
 934        IEEE80211_P2P_ATTR_CAPABILITY,
 935        IEEE80211_P2P_ATTR_DEVICE_ID,
 936        IEEE80211_P2P_ATTR_GO_INTENT,
 937        IEEE80211_P2P_ATTR_GO_CONFIG_TIMEOUT,
 938        IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
 939        IEEE80211_P2P_ATTR_GROUP_BSSID,
 940        IEEE80211_P2P_ATTR_EXT_LISTEN_TIMING,
 941        IEEE80211_P2P_ATTR_INTENDED_IFACE_ADDR,
 942        IEEE80211_P2P_ATTR_MANAGABILITY,
 943        IEEE80211_P2P_ATTR_CHANNEL_LIST,
 944        IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
 945        IEEE80211_P2P_ATTR_DEVICE_INFO,
 946        IEEE80211_P2P_ATTR_GROUP_INFO,
 947        IEEE80211_P2P_ATTR_GROUP_ID,
 948        IEEE80211_P2P_ATTR_INTERFACE,
 949        IEEE80211_P2P_ATTR_OPER_CHANNEL,
 950        IEEE80211_P2P_ATTR_INVITE_FLAGS,
 951        /* 19 - 220: Reserved */
 952        IEEE80211_P2P_ATTR_VENDOR_SPECIFIC = 221,
 953
 954        IEEE80211_P2P_ATTR_MAX
 955};
 956
 957/**
 958 * struct ieee80211_bar - HT Block Ack Request
 959 *
 960 * This structure refers to "HT BlockAckReq" as
 961 * described in 802.11n draft section 7.2.1.7.1
 962 */
 963struct ieee80211_bar {
 964        __le16 frame_control;
 965        __le16 duration;
 966        __u8 ra[6];
 967        __u8 ta[6];
 968        __le16 control;
 969        __le16 start_seq_num;
 970} __attribute__((packed));
 971
 972/* 802.11 BAR control masks */
 973#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 974#define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 975#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 976#define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 977#define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 978
 979#define IEEE80211_HT_MCS_MASK_LEN               10
 980
 981/**
 982 * struct ieee80211_mcs_info - MCS information
 983 * @rx_mask: RX mask
 984 * @rx_highest: highest supported RX rate. If set represents
 985 *      the highest supported RX data rate in units of 1 Mbps.
 986 *      If this field is 0 this value should not be used to
 987 *      consider the highest RX data rate supported.
 988 * @tx_params: TX parameters
 989 */
 990struct ieee80211_mcs_info {
 991        u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 992        __le16 rx_highest;
 993        u8 tx_params;
 994        u8 reserved[3];
 995} __attribute__((packed));
 996
 997/* 802.11n HT capability MSC set */
 998#define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 999#define IEEE80211_HT_MCS_TX_DEFINED             0x01
1000#define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
1001/* value 0 == 1 stream etc */
1002#define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
1003#define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
1004#define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
1005#define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
1006
1007/*
1008 * 802.11n D5.0 20.3.5 / 20.6 says:
1009 * - indices 0 to 7 and 32 are single spatial stream
1010 * - 8 to 31 are multiple spatial streams using equal modulation
1011 *   [8..15 for two streams, 16..23 for three and 24..31 for four]
1012 * - remainder are multiple spatial streams using unequal modulation
1013 */
1014#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
1015#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
1016        (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
1017
1018/**
1019 * struct ieee80211_ht_cap - HT capabilities
1020 *
1021 * This structure is the "HT capabilities element" as
1022 * described in 802.11n D5.0 7.3.2.57
1023 */
1024struct ieee80211_ht_cap {
1025        __le16 cap_info;
1026        u8 ampdu_params_info;
1027
1028        /* 16 bytes MCS information */
1029        struct ieee80211_mcs_info mcs;
1030
1031        __le16 extended_ht_cap_info;
1032        __le32 tx_BF_cap_info;
1033        u8 antenna_selection_info;
1034} __attribute__ ((packed));
1035
1036/* 802.11n HT capabilities masks (for cap_info) */
1037#define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1038#define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1039#define IEEE80211_HT_CAP_SM_PS                  0x000C
1040#define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1041#define IEEE80211_HT_CAP_GRN_FLD                0x0010
1042#define IEEE80211_HT_CAP_SGI_20                 0x0020
1043#define IEEE80211_HT_CAP_SGI_40                 0x0040
1044#define IEEE80211_HT_CAP_TX_STBC                0x0080
1045#define IEEE80211_HT_CAP_RX_STBC                0x0300
1046#define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1047#define IEEE80211_HT_CAP_DELAY_BA               0x0400
1048#define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1049#define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1050#define IEEE80211_HT_CAP_RESERVED               0x2000
1051#define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1052#define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1053
1054/* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1055#define IEEE80211_HT_EXT_CAP_PCO                0x0001
1056#define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1057#define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1058#define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1059#define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1060#define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1061#define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1062
1063/* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1064#define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1065#define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1066#define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1067
1068/*
1069 * Maximum length of AMPDU that the STA can receive.
1070 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1071 */
1072enum ieee80211_max_ampdu_length_exp {
1073        IEEE80211_HT_MAX_AMPDU_8K = 0,
1074        IEEE80211_HT_MAX_AMPDU_16K = 1,
1075        IEEE80211_HT_MAX_AMPDU_32K = 2,
1076        IEEE80211_HT_MAX_AMPDU_64K = 3
1077};
1078
1079#define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1080
1081/* Minimum MPDU start spacing */
1082enum ieee80211_min_mpdu_spacing {
1083        IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1084        IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1085        IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1086        IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1087        IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1088        IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1089        IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1090        IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1091};
1092
1093/**
1094 * struct ieee80211_ht_operation - HT operation IE
1095 *
1096 * This structure is the "HT operation element" as
1097 * described in 802.11n-2009 7.3.2.57
1098 */
1099struct ieee80211_ht_operation {
1100        u8 primary_chan;
1101        u8 ht_param;
1102        __le16 operation_mode;
1103        __le16 stbc_param;
1104        u8 basic_set[16];
1105} __attribute__ ((packed));
1106
1107/* for ht_param */
1108#define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1109#define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1110#define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1111#define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1112#define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1113#define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1114
1115/* for operation_mode */
1116#define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1117#define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1118#define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1119#define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1120#define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1121#define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1122#define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1123
1124/* for stbc_param */
1125#define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1126#define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1127#define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1128#define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1129#define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1130#define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1131
1132
1133/* block-ack parameters */
1134#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1135#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1136#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1137#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1138#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1139
1140/*
1141 * A-PMDU buffer sizes
1142 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1143 */
1144#define IEEE80211_MIN_AMPDU_BUF 0x8
1145#define IEEE80211_MAX_AMPDU_BUF 0x40
1146
1147
1148/* Spatial Multiplexing Power Save Modes (for capability) */
1149#define WLAN_HT_CAP_SM_PS_STATIC        0
1150#define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1151#define WLAN_HT_CAP_SM_PS_INVALID       2
1152#define WLAN_HT_CAP_SM_PS_DISABLED      3
1153
1154/* for SM power control field lower two bits */
1155#define WLAN_HT_SMPS_CONTROL_DISABLED   0
1156#define WLAN_HT_SMPS_CONTROL_STATIC     1
1157#define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1158
1159/**
1160 * struct ieee80211_vht_mcs_info - VHT MCS information
1161 * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1162 * @rx_highest: Indicates highest long GI VHT PPDU data rate
1163 *      STA can receive. Rate expressed in units of 1 Mbps.
1164 *      If this field is 0 this value should not be used to
1165 *      consider the highest RX data rate supported.
1166 *      The top 3 bits of this field are reserved.
1167 * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1168 * @tx_highest: Indicates highest long GI VHT PPDU data rate
1169 *      STA can transmit. Rate expressed in units of 1 Mbps.
1170 *      If this field is 0 this value should not be used to
1171 *      consider the highest TX data rate supported.
1172 *      The top 3 bits of this field are reserved.
1173 */
1174struct ieee80211_vht_mcs_info {
1175        __le16 rx_mcs_map;
1176        __le16 rx_highest;
1177        __le16 tx_mcs_map;
1178        __le16 tx_highest;
1179} __packed;
1180
1181/**
1182 * enum ieee80211_vht_mcs_support - VHT MCS support definitions
1183 * @IEEE80211_VHT_MCS_SUPPORT_0_7: MCSes 0-7 are supported for the
1184 *      number of streams
1185 * @IEEE80211_VHT_MCS_SUPPORT_0_8: MCSes 0-8 are supported
1186 * @IEEE80211_VHT_MCS_SUPPORT_0_9: MCSes 0-9 are supported
1187 * @IEEE80211_VHT_MCS_NOT_SUPPORTED: This number of streams isn't supported
1188 *
1189 * These definitions are used in each 2-bit subfield of the @rx_mcs_map
1190 * and @tx_mcs_map fields of &struct ieee80211_vht_mcs_info, which are
1191 * both split into 8 subfields by number of streams. These values indicate
1192 * which MCSes are supported for the number of streams the value appears
1193 * for.
1194 */
1195enum ieee80211_vht_mcs_support {
1196        IEEE80211_VHT_MCS_SUPPORT_0_7   = 0,
1197        IEEE80211_VHT_MCS_SUPPORT_0_8   = 1,
1198        IEEE80211_VHT_MCS_SUPPORT_0_9   = 2,
1199        IEEE80211_VHT_MCS_NOT_SUPPORTED = 3,
1200};
1201
1202/**
1203 * struct ieee80211_vht_cap - VHT capabilities
1204 *
1205 * This structure is the "VHT capabilities element" as
1206 * described in 802.11ac D3.0 8.4.2.160
1207 * @vht_cap_info: VHT capability info
1208 * @supp_mcs: VHT MCS supported rates
1209 */
1210struct ieee80211_vht_cap {
1211        __le32 vht_cap_info;
1212        struct ieee80211_vht_mcs_info supp_mcs;
1213} __packed;
1214
1215/**
1216 * enum ieee80211_vht_chanwidth - VHT channel width
1217 * @IEEE80211_VHT_CHANWIDTH_USE_HT: use the HT operation IE to
1218 *      determine the channel width (20 or 40 MHz)
1219 * @IEEE80211_VHT_CHANWIDTH_80MHZ: 80 MHz bandwidth
1220 * @IEEE80211_VHT_CHANWIDTH_160MHZ: 160 MHz bandwidth
1221 * @IEEE80211_VHT_CHANWIDTH_80P80MHZ: 80+80 MHz bandwidth
1222 */
1223enum ieee80211_vht_chanwidth {
1224        IEEE80211_VHT_CHANWIDTH_USE_HT          = 0,
1225        IEEE80211_VHT_CHANWIDTH_80MHZ           = 1,
1226        IEEE80211_VHT_CHANWIDTH_160MHZ          = 2,
1227        IEEE80211_VHT_CHANWIDTH_80P80MHZ        = 3,
1228};
1229
1230/**
1231 * struct ieee80211_vht_operation - VHT operation IE
1232 *
1233 * This structure is the "VHT operation element" as
1234 * described in 802.11ac D3.0 8.4.2.161
1235 * @chan_width: Operating channel width
1236 * @center_freq_seg1_idx: center freq segment 1 index
1237 * @center_freq_seg2_idx: center freq segment 2 index
1238 * @basic_mcs_set: VHT Basic MCS rate set
1239 */
1240struct ieee80211_vht_operation {
1241        u8 chan_width;
1242        u8 center_freq_seg1_idx;
1243        u8 center_freq_seg2_idx;
1244        __le16 basic_mcs_set;
1245} __packed;
1246
1247
1248#define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1249#define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1250#define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT  2
1251#define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1252
1253/* 802.11ac VHT Capabilities */
1254#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                  0x00000000
1255#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                  0x00000001
1256#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454                 0x00000002
1257#define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ                0x00000004
1258#define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ       0x00000008
1259#define IEEE80211_VHT_CAP_RXLDPC                                0x00000010
1260#define IEEE80211_VHT_CAP_SHORT_GI_80                           0x00000020
1261#define IEEE80211_VHT_CAP_SHORT_GI_160                          0x00000040
1262#define IEEE80211_VHT_CAP_TXSTBC                                0x00000080
1263#define IEEE80211_VHT_CAP_RXSTBC_1                              0x00000100
1264#define IEEE80211_VHT_CAP_RXSTBC_2                              0x00000200
1265#define IEEE80211_VHT_CAP_RXSTBC_3                              0x00000300
1266#define IEEE80211_VHT_CAP_RXSTBC_4                              0x00000400
1267#define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE                 0x00000800
1268#define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE                 0x00001000
1269#define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX               0x00006000
1270#define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX                0x00030000
1271#define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE                 0x00080000
1272#define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE                 0x00100000
1273#define IEEE80211_VHT_CAP_VHT_TXOP_PS                           0x00200000
1274#define IEEE80211_VHT_CAP_HTC_VHT                               0x00400000
1275#define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT      23
1276#define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK       \
1277                (7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT)
1278#define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB     0x08000000
1279#define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB       0x0c000000
1280#define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                    0x10000000
1281#define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                    0x20000000
1282
1283/* Authentication algorithms */
1284#define WLAN_AUTH_OPEN 0
1285#define WLAN_AUTH_SHARED_KEY 1
1286#define WLAN_AUTH_FT 2
1287#define WLAN_AUTH_SAE 3
1288#define WLAN_AUTH_LEAP 128
1289
1290#define WLAN_AUTH_CHALLENGE_LEN 128
1291
1292#define WLAN_CAPABILITY_ESS             (1<<0)
1293#define WLAN_CAPABILITY_IBSS            (1<<1)
1294
1295/*
1296 * A mesh STA sets the ESS and IBSS capability bits to zero.
1297 * however, this holds true for p2p probe responses (in the p2p_find
1298 * phase) as well.
1299 */
1300#define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1301        (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1302
1303#define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1304#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1305#define WLAN_CAPABILITY_PRIVACY         (1<<4)
1306#define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1307#define WLAN_CAPABILITY_PBCC            (1<<6)
1308#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1309
1310/* 802.11h */
1311#define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1312#define WLAN_CAPABILITY_QOS             (1<<9)
1313#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1314#define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1315
1316/* DMG (60gHz) 802.11ad */
1317/* type - bits 0..1 */
1318#define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1319#define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1320#define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1321
1322#define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1323#define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
1324#define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1325#define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1326
1327#define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1328#define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1329
1330/* measurement */
1331#define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1332#define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1333#define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1334
1335#define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1336#define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1337#define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1338
1339/* 802.11g ERP information element */
1340#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1341#define WLAN_ERP_USE_PROTECTION (1<<1)
1342#define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1343
1344/* WLAN_ERP_BARKER_PREAMBLE values */
1345enum {
1346        WLAN_ERP_PREAMBLE_SHORT = 0,
1347        WLAN_ERP_PREAMBLE_LONG = 1,
1348};
1349
1350/* Band ID, 802.11ad #8.4.1.45 */
1351enum {
1352        IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1353        IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1354        IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1355        IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1356        IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1357        IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1358};
1359
1360/* Status codes */
1361enum ieee80211_statuscode {
1362        WLAN_STATUS_SUCCESS = 0,
1363        WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1364        WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1365        WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1366        WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1367        WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1368        WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1369        WLAN_STATUS_CHALLENGE_FAIL = 15,
1370        WLAN_STATUS_AUTH_TIMEOUT = 16,
1371        WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1372        WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1373        /* 802.11b */
1374        WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1375        WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1376        WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1377        /* 802.11h */
1378        WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1379        WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1380        WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1381        /* 802.11g */
1382        WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1383        WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1384        /* 802.11w */
1385        WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1386        WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1387        /* 802.11i */
1388        WLAN_STATUS_INVALID_IE = 40,
1389        WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1390        WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1391        WLAN_STATUS_INVALID_AKMP = 43,
1392        WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1393        WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1394        WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1395        /* 802.11e */
1396        WLAN_STATUS_UNSPECIFIED_QOS = 32,
1397        WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1398        WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1399        WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1400        WLAN_STATUS_REQUEST_DECLINED = 37,
1401        WLAN_STATUS_INVALID_QOS_PARAM = 38,
1402        WLAN_STATUS_CHANGE_TSPEC = 39,
1403        WLAN_STATUS_WAIT_TS_DELAY = 47,
1404        WLAN_STATUS_NO_DIRECT_LINK = 48,
1405        WLAN_STATUS_STA_NOT_PRESENT = 49,
1406        WLAN_STATUS_STA_NOT_QSTA = 50,
1407        /* 802.11s */
1408        WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1409        WLAN_STATUS_FCG_NOT_SUPP = 78,
1410        WLAN_STATUS_STA_NO_TBTT = 78,
1411        /* 802.11ad */
1412        WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1413        WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1414        WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1415        WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1416        WLAN_STATUS_PERFORMING_FST_NOW = 87,
1417        WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1418        WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1419        WLAN_STATUS_REJECT_DSE_BAND = 96,
1420        WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1421        WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1422};
1423
1424
1425/* Reason codes */
1426enum ieee80211_reasoncode {
1427        WLAN_REASON_UNSPECIFIED = 1,
1428        WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1429        WLAN_REASON_DEAUTH_LEAVING = 3,
1430        WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1431        WLAN_REASON_DISASSOC_AP_BUSY = 5,
1432        WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1433        WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1434        WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1435        WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1436        /* 802.11h */
1437        WLAN_REASON_DISASSOC_BAD_POWER = 10,
1438        WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1439        /* 802.11i */
1440        WLAN_REASON_INVALID_IE = 13,
1441        WLAN_REASON_MIC_FAILURE = 14,
1442        WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1443        WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1444        WLAN_REASON_IE_DIFFERENT = 17,
1445        WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1446        WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1447        WLAN_REASON_INVALID_AKMP = 20,
1448        WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1449        WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1450        WLAN_REASON_IEEE8021X_FAILED = 23,
1451        WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1452        /* 802.11e */
1453        WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1454        WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1455        WLAN_REASON_DISASSOC_LOW_ACK = 34,
1456        WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1457        WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1458        WLAN_REASON_QSTA_NOT_USE = 37,
1459        WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1460        WLAN_REASON_QSTA_TIMEOUT = 39,
1461        WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1462        /* 802.11s */
1463        WLAN_REASON_MESH_PEER_CANCELED = 52,
1464        WLAN_REASON_MESH_MAX_PEERS = 53,
1465        WLAN_REASON_MESH_CONFIG = 54,
1466        WLAN_REASON_MESH_CLOSE = 55,
1467        WLAN_REASON_MESH_MAX_RETRIES = 56,
1468        WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1469        WLAN_REASON_MESH_INVALID_GTK = 58,
1470        WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1471        WLAN_REASON_MESH_INVALID_SECURITY = 60,
1472        WLAN_REASON_MESH_PATH_ERROR = 61,
1473        WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1474        WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1475        WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1476        WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1477        WLAN_REASON_MESH_CHAN = 66,
1478};
1479
1480
1481/* Information Element IDs */
1482enum ieee80211_eid {
1483        WLAN_EID_SSID = 0,
1484        WLAN_EID_SUPP_RATES = 1,
1485        WLAN_EID_FH_PARAMS = 2,
1486        WLAN_EID_DS_PARAMS = 3,
1487        WLAN_EID_CF_PARAMS = 4,
1488        WLAN_EID_TIM = 5,
1489        WLAN_EID_IBSS_PARAMS = 6,
1490        WLAN_EID_CHALLENGE = 16,
1491
1492        WLAN_EID_COUNTRY = 7,
1493        WLAN_EID_HP_PARAMS = 8,
1494        WLAN_EID_HP_TABLE = 9,
1495        WLAN_EID_REQUEST = 10,
1496
1497        WLAN_EID_QBSS_LOAD = 11,
1498        WLAN_EID_EDCA_PARAM_SET = 12,
1499        WLAN_EID_TSPEC = 13,
1500        WLAN_EID_TCLAS = 14,
1501        WLAN_EID_SCHEDULE = 15,
1502        WLAN_EID_TS_DELAY = 43,
1503        WLAN_EID_TCLAS_PROCESSING = 44,
1504        WLAN_EID_QOS_CAPA = 46,
1505        /* 802.11z */
1506        WLAN_EID_LINK_ID = 101,
1507        /* 802.11s */
1508        WLAN_EID_MESH_CONFIG = 113,
1509        WLAN_EID_MESH_ID = 114,
1510        WLAN_EID_LINK_METRIC_REPORT = 115,
1511        WLAN_EID_CONGESTION_NOTIFICATION = 116,
1512        WLAN_EID_PEER_MGMT = 117,
1513        WLAN_EID_CHAN_SWITCH_PARAM = 118,
1514        WLAN_EID_MESH_AWAKE_WINDOW = 119,
1515        WLAN_EID_BEACON_TIMING = 120,
1516        WLAN_EID_MCCAOP_SETUP_REQ = 121,
1517        WLAN_EID_MCCAOP_SETUP_RESP = 122,
1518        WLAN_EID_MCCAOP_ADVERT = 123,
1519        WLAN_EID_MCCAOP_TEARDOWN = 124,
1520        WLAN_EID_GANN = 125,
1521        WLAN_EID_RANN = 126,
1522        WLAN_EID_PREQ = 130,
1523        WLAN_EID_PREP = 131,
1524        WLAN_EID_PERR = 132,
1525        WLAN_EID_PXU = 137,
1526        WLAN_EID_PXUC = 138,
1527        WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1528        WLAN_EID_MIC = 140,
1529
1530        WLAN_EID_PWR_CONSTRAINT = 32,
1531        WLAN_EID_PWR_CAPABILITY = 33,
1532        WLAN_EID_TPC_REQUEST = 34,
1533        WLAN_EID_TPC_REPORT = 35,
1534        WLAN_EID_SUPPORTED_CHANNELS = 36,
1535        WLAN_EID_CHANNEL_SWITCH = 37,
1536        WLAN_EID_MEASURE_REQUEST = 38,
1537        WLAN_EID_MEASURE_REPORT = 39,
1538        WLAN_EID_QUIET = 40,
1539        WLAN_EID_IBSS_DFS = 41,
1540
1541        WLAN_EID_ERP_INFO = 42,
1542        WLAN_EID_EXT_SUPP_RATES = 50,
1543
1544        WLAN_EID_HT_CAPABILITY = 45,
1545        WLAN_EID_HT_OPERATION = 61,
1546
1547        WLAN_EID_RSN = 48,
1548        WLAN_EID_MMIE = 76,
1549        WLAN_EID_VENDOR_SPECIFIC = 221,
1550        WLAN_EID_QOS_PARAMETER = 222,
1551
1552        WLAN_EID_AP_CHAN_REPORT = 51,
1553        WLAN_EID_NEIGHBOR_REPORT = 52,
1554        WLAN_EID_RCPI = 53,
1555        WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1556        WLAN_EID_ANTENNA_INFO = 64,
1557        WLAN_EID_RSNI = 65,
1558        WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1559        WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1560        WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1561        WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1562        WLAN_EID_MULTIPLE_BSSID = 71,
1563        WLAN_EID_BSS_COEX_2040 = 72,
1564        WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1565        WLAN_EID_EXT_CAPABILITY = 127,
1566
1567        WLAN_EID_MOBILITY_DOMAIN = 54,
1568        WLAN_EID_FAST_BSS_TRANSITION = 55,
1569        WLAN_EID_TIMEOUT_INTERVAL = 56,
1570        WLAN_EID_RIC_DATA = 57,
1571        WLAN_EID_RIC_DESCRIPTOR = 75,
1572
1573        WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1574        WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1575        WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1576
1577        WLAN_EID_VHT_CAPABILITY = 191,
1578        WLAN_EID_VHT_OPERATION = 192,
1579
1580        /* 802.11ad */
1581        WLAN_EID_NON_TX_BSSID_CAP =  83,
1582        WLAN_EID_WAKEUP_SCHEDULE = 143,
1583        WLAN_EID_EXT_SCHEDULE = 144,
1584        WLAN_EID_STA_AVAILABILITY = 145,
1585        WLAN_EID_DMG_TSPEC = 146,
1586        WLAN_EID_DMG_AT = 147,
1587        WLAN_EID_DMG_CAP = 148,
1588        WLAN_EID_DMG_OPERATION = 151,
1589        WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1590        WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1591        WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1592        WLAN_EID_AWAKE_WINDOW = 157,
1593        WLAN_EID_MULTI_BAND = 158,
1594        WLAN_EID_ADDBA_EXT = 159,
1595        WLAN_EID_NEXT_PCP_LIST = 160,
1596        WLAN_EID_PCP_HANDOVER = 161,
1597        WLAN_EID_DMG_LINK_MARGIN = 162,
1598        WLAN_EID_SWITCHING_STREAM = 163,
1599        WLAN_EID_SESSION_TRANSITION = 164,
1600        WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1601        WLAN_EID_CLUSTER_REPORT = 166,
1602        WLAN_EID_RELAY_CAP = 167,
1603        WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1604        WLAN_EID_BEAM_LINK_MAINT = 169,
1605        WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1606        WLAN_EID_U_PID = 171,
1607        WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1608        WLAN_EID_QUIET_PERIOD_REQ = 175,
1609        WLAN_EID_QUIET_PERIOD_RESP = 177,
1610        WLAN_EID_EPAC_POLICY = 182,
1611        WLAN_EID_CLISTER_TIME_OFF = 183,
1612        WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1613};
1614
1615/* Action category code */
1616enum ieee80211_category {
1617        WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1618        WLAN_CATEGORY_QOS = 1,
1619        WLAN_CATEGORY_DLS = 2,
1620        WLAN_CATEGORY_BACK = 3,
1621        WLAN_CATEGORY_PUBLIC = 4,
1622        WLAN_CATEGORY_HT = 7,
1623        WLAN_CATEGORY_SA_QUERY = 8,
1624        WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1625        WLAN_CATEGORY_TDLS = 12,
1626        WLAN_CATEGORY_MESH_ACTION = 13,
1627        WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1628        WLAN_CATEGORY_SELF_PROTECTED = 15,
1629        WLAN_CATEGORY_DMG = 16,
1630        WLAN_CATEGORY_WMM = 17,
1631        WLAN_CATEGORY_FST = 18,
1632        WLAN_CATEGORY_UNPROT_DMG = 20,
1633        WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1634        WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1635};
1636
1637/* SPECTRUM_MGMT action code */
1638enum ieee80211_spectrum_mgmt_actioncode {
1639        WLAN_ACTION_SPCT_MSR_REQ = 0,
1640        WLAN_ACTION_SPCT_MSR_RPRT = 1,
1641        WLAN_ACTION_SPCT_TPC_REQ = 2,
1642        WLAN_ACTION_SPCT_TPC_RPRT = 3,
1643        WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1644};
1645
1646/* HT action codes */
1647enum ieee80211_ht_actioncode {
1648        WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1649        WLAN_HT_ACTION_SMPS = 1,
1650        WLAN_HT_ACTION_PSMP = 2,
1651        WLAN_HT_ACTION_PCO_PHASE = 3,
1652        WLAN_HT_ACTION_CSI = 4,
1653        WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1654        WLAN_HT_ACTION_COMPRESSED_BF = 6,
1655        WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1656};
1657
1658/* Self Protected Action codes */
1659enum ieee80211_self_protected_actioncode {
1660        WLAN_SP_RESERVED = 0,
1661        WLAN_SP_MESH_PEERING_OPEN = 1,
1662        WLAN_SP_MESH_PEERING_CONFIRM = 2,
1663        WLAN_SP_MESH_PEERING_CLOSE = 3,
1664        WLAN_SP_MGK_INFORM = 4,
1665        WLAN_SP_MGK_ACK = 5,
1666};
1667
1668/* Mesh action codes */
1669enum ieee80211_mesh_actioncode {
1670        WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1671        WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1672        WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1673        WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1674        WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1675        WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1676        WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1677        WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1678        WLAN_MESH_ACTION_MCCA_TEARDOWN,
1679        WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1680        WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1681};
1682
1683/* Security key length */
1684enum ieee80211_key_len {
1685        WLAN_KEY_LEN_WEP40 = 5,
1686        WLAN_KEY_LEN_WEP104 = 13,
1687        WLAN_KEY_LEN_CCMP = 16,
1688        WLAN_KEY_LEN_TKIP = 32,
1689        WLAN_KEY_LEN_AES_CMAC = 16,
1690};
1691
1692/* Public action codes */
1693enum ieee80211_pub_actioncode {
1694        WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1695};
1696
1697/* TDLS action codes */
1698enum ieee80211_tdls_actioncode {
1699        WLAN_TDLS_SETUP_REQUEST = 0,
1700        WLAN_TDLS_SETUP_RESPONSE = 1,
1701        WLAN_TDLS_SETUP_CONFIRM = 2,
1702        WLAN_TDLS_TEARDOWN = 3,
1703        WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1704        WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1705        WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1706        WLAN_TDLS_PEER_PSM_REQUEST = 7,
1707        WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1708        WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1709        WLAN_TDLS_DISCOVERY_REQUEST = 10,
1710};
1711
1712/*
1713 * TDLS capabililites to be enabled in the 5th byte of the
1714 * @WLAN_EID_EXT_CAPABILITY information element
1715 */
1716#define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1717#define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1718
1719/* TDLS specific payload type in the LLC/SNAP header */
1720#define WLAN_TDLS_SNAP_RFTYPE   0x2
1721
1722/**
1723 * enum - mesh synchronization method identifier
1724 *
1725 * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1726 * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1727 *      that will be specified in a vendor specific information element
1728 */
1729enum {
1730        IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1731        IEEE80211_SYNC_METHOD_VENDOR = 255,
1732};
1733
1734/**
1735 * enum - mesh path selection protocol identifier
1736 *
1737 * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1738 * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1739 *      be specified in a vendor specific information element
1740 */
1741enum {
1742        IEEE80211_PATH_PROTOCOL_HWMP = 1,
1743        IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1744};
1745
1746/**
1747 * enum - mesh path selection metric identifier
1748 *
1749 * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1750 * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1751 *      specified in a vendor specific information element
1752 */
1753enum {
1754        IEEE80211_PATH_METRIC_AIRTIME = 1,
1755        IEEE80211_PATH_METRIC_VENDOR = 255,
1756};
1757
1758/**
1759 * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1760 *
1761 * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1762 *
1763 * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1764 * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1765 *      this value
1766 * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1767 *      the proactive PREQ with proactive PREP subfield set to 0
1768 * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1769 *      supports the proactive PREQ with proactive PREP subfield set to 1
1770 * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1771 *      the proactive RANN
1772 */
1773enum ieee80211_root_mode_identifier {
1774        IEEE80211_ROOTMODE_NO_ROOT = 0,
1775        IEEE80211_ROOTMODE_ROOT = 1,
1776        IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1777        IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1778        IEEE80211_PROACTIVE_RANN = 4,
1779};
1780
1781/*
1782 * IEEE 802.11-2007 7.3.2.9 Country information element
1783 *
1784 * Minimum length is 8 octets, ie len must be evenly
1785 * divisible by 2
1786 */
1787
1788/* Although the spec says 8 I'm seeing 6 in practice */
1789#define IEEE80211_COUNTRY_IE_MIN_LEN    6
1790
1791/* The Country String field of the element shall be 3 octets in length */
1792#define IEEE80211_COUNTRY_STRING_LEN    3
1793
1794/*
1795 * For regulatory extension stuff see IEEE 802.11-2007
1796 * Annex I (page 1141) and Annex J (page 1147). Also
1797 * review 7.3.2.9.
1798 *
1799 * When dot11RegulatoryClassesRequired is true and the
1800 * first_channel/reg_extension_id is >= 201 then the IE
1801 * compromises of the 'ext' struct represented below:
1802 *
1803 *  - Regulatory extension ID - when generating IE this just needs
1804 *    to be monotonically increasing for each triplet passed in
1805 *    the IE
1806 *  - Regulatory class - index into set of rules
1807 *  - Coverage class - index into air propagation time (Table 7-27),
1808 *    in microseconds, you can compute the air propagation time from
1809 *    the index by multiplying by 3, so index 10 yields a propagation
1810 *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1811 *    yet. A value of 0 inicates air propagation of <= 1 us.
1812 *
1813 *  See also Table I.2 for Emission limit sets and table
1814 *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1815 *  a reg_class to an emission limit set and behavior limit set.
1816 */
1817#define IEEE80211_COUNTRY_EXTENSION_ID 201
1818
1819/*
1820 *  Channels numbers in the IE must be monotonically increasing
1821 *  if dot11RegulatoryClassesRequired is not true.
1822 *
1823 *  If dot11RegulatoryClassesRequired is true consecutive
1824 *  subband triplets following a regulatory triplet shall
1825 *  have monotonically increasing first_channel number fields.
1826 *
1827 *  Channel numbers shall not overlap.
1828 *
1829 *  Note that max_power is signed.
1830 */
1831struct ieee80211_country_ie_triplet {
1832        union {
1833                struct {
1834                        u8 first_channel;
1835                        u8 num_channels;
1836                        s8 max_power;
1837                } __attribute__ ((packed)) chans;
1838                struct {
1839                        u8 reg_extension_id;
1840                        u8 reg_class;
1841                        u8 coverage_class;
1842                } __attribute__ ((packed)) ext;
1843        };
1844} __attribute__ ((packed));
1845
1846enum ieee80211_timeout_interval_type {
1847        WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1848        WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1849        WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1850};
1851
1852/* BACK action code */
1853enum ieee80211_back_actioncode {
1854        WLAN_ACTION_ADDBA_REQ = 0,
1855        WLAN_ACTION_ADDBA_RESP = 1,
1856        WLAN_ACTION_DELBA = 2,
1857};
1858
1859/* BACK (block-ack) parties */
1860enum ieee80211_back_parties {
1861        WLAN_BACK_RECIPIENT = 0,
1862        WLAN_BACK_INITIATOR = 1,
1863};
1864
1865/* SA Query action */
1866enum ieee80211_sa_query_action {
1867        WLAN_ACTION_SA_QUERY_REQUEST = 0,
1868        WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1869};
1870
1871
1872/* cipher suite selectors */
1873#define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1874#define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1875#define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1876/* reserved:                            0x000FAC03 */
1877#define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1878#define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1879#define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1880#define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
1881
1882#define WLAN_CIPHER_SUITE_SMS4          0x00147201
1883
1884/* AKM suite selectors */
1885#define WLAN_AKM_SUITE_8021X            0x000FAC01
1886#define WLAN_AKM_SUITE_PSK              0x000FAC02
1887#define WLAN_AKM_SUITE_SAE                      0x000FAC08
1888#define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1889
1890#define WLAN_MAX_KEY_LEN                32
1891
1892#define WLAN_PMKID_LEN                  16
1893
1894#define WLAN_OUI_WFA                    0x506f9a
1895#define WLAN_OUI_TYPE_WFA_P2P           9
1896#define WLAN_OUI_MICROSOFT              0x0050f2
1897#define WLAN_OUI_TYPE_MICROSOFT_WPA     1
1898#define WLAN_OUI_TYPE_MICROSOFT_WMM     2
1899#define WLAN_OUI_TYPE_MICROSOFT_WPS     4
1900
1901/*
1902 * WMM/802.11e Tspec Element
1903 */
1904#define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1905#define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1906
1907enum ieee80211_tspec_status_code {
1908        IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1909        IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1910};
1911
1912struct ieee80211_tspec_ie {
1913        u8 element_id;
1914        u8 len;
1915        u8 oui[3];
1916        u8 oui_type;
1917        u8 oui_subtype;
1918        u8 version;
1919        __le16 tsinfo;
1920        u8 tsinfo_resvd;
1921        __le16 nominal_msdu;
1922        __le16 max_msdu;
1923        __le32 min_service_int;
1924        __le32 max_service_int;
1925        __le32 inactivity_int;
1926        __le32 suspension_int;
1927        __le32 service_start_time;
1928        __le32 min_data_rate;
1929        __le32 mean_data_rate;
1930        __le32 peak_data_rate;
1931        __le32 max_burst_size;
1932        __le32 delay_bound;
1933        __le32 min_phy_rate;
1934        __le16 sba;
1935        __le16 medium_time;
1936} __packed;
1937
1938/**
1939 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1940 * @hdr: the frame
1941 *
1942 * The qos ctrl bytes come after the frame_control, duration, seq_num
1943 * and 3 or 4 addresses of length ETH_ALEN.
1944 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1945 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1946 */
1947static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1948{
1949        if (ieee80211_has_a4(hdr->frame_control))
1950                return (u8 *)hdr + 30;
1951        else
1952                return (u8 *)hdr + 24;
1953}
1954
1955/**
1956 * ieee80211_get_SA - get pointer to SA
1957 * @hdr: the frame
1958 *
1959 * Given an 802.11 frame, this function returns the offset
1960 * to the source address (SA). It does not verify that the
1961 * header is long enough to contain the address, and the
1962 * header must be long enough to contain the frame control
1963 * field.
1964 */
1965static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1966{
1967        if (ieee80211_has_a4(hdr->frame_control))
1968                return hdr->addr4;
1969        if (ieee80211_has_fromds(hdr->frame_control))
1970                return hdr->addr3;
1971        return hdr->addr2;
1972}
1973
1974/**
1975 * ieee80211_get_DA - get pointer to DA
1976 * @hdr: the frame
1977 *
1978 * Given an 802.11 frame, this function returns the offset
1979 * to the destination address (DA). It does not verify that
1980 * the header is long enough to contain the address, and the
1981 * header must be long enough to contain the frame control
1982 * field.
1983 */
1984static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1985{
1986        if (ieee80211_has_tods(hdr->frame_control))
1987                return hdr->addr3;
1988        else
1989                return hdr->addr1;
1990}
1991
1992/**
1993 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1994 * @hdr: the frame (buffer must include at least the first octet of payload)
1995 */
1996static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1997{
1998        if (ieee80211_is_disassoc(hdr->frame_control) ||
1999            ieee80211_is_deauth(hdr->frame_control))
2000                return true;
2001
2002        if (ieee80211_is_action(hdr->frame_control)) {
2003                u8 *category;
2004
2005                /*
2006                 * Action frames, excluding Public Action frames, are Robust
2007                 * Management Frames. However, if we are looking at a Protected
2008                 * frame, skip the check since the data may be encrypted and
2009                 * the frame has already been found to be a Robust Management
2010                 * Frame (by the other end).
2011                 */
2012                if (ieee80211_has_protected(hdr->frame_control))
2013                        return true;
2014                category = ((u8 *) hdr) + 24;
2015                return *category != WLAN_CATEGORY_PUBLIC &&
2016                        *category != WLAN_CATEGORY_HT &&
2017                        *category != WLAN_CATEGORY_SELF_PROTECTED &&
2018                        *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
2019        }
2020
2021        return false;
2022}
2023
2024/**
2025 * ieee80211_is_public_action - check if frame is a public action frame
2026 * @hdr: the frame
2027 * @len: length of the frame
2028 */
2029static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
2030                                              size_t len)
2031{
2032        struct ieee80211_mgmt *mgmt = (void *)hdr;
2033
2034        if (len < IEEE80211_MIN_ACTION_SIZE)
2035                return false;
2036        if (!ieee80211_is_action(hdr->frame_control))
2037                return false;
2038        return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
2039}
2040
2041/**
2042 * ieee80211_dsss_chan_to_freq - get channel center frequency
2043 * @channel: the DSSS channel
2044 *
2045 * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
2046 * Ref IEEE 802.11-2007 section 15.6
2047 */
2048static inline int ieee80211_dsss_chan_to_freq(int channel)
2049{
2050        if ((channel > 0) && (channel < 14))
2051                return 2407 + (channel * 5);
2052        else if (channel == 14)
2053                return 2484;
2054        else
2055                return -1;
2056}
2057
2058/**
2059 * ieee80211_freq_to_dsss_chan - get channel
2060 * @freq: the frequency
2061 *
2062 * Convert frequency (MHz) to IEEE802.11 DSSS channel
2063 * Ref IEEE 802.11-2007 section 15.6
2064 *
2065 * This routine selects the channel with the closest center frequency.
2066 */
2067static inline int ieee80211_freq_to_dsss_chan(int freq)
2068{
2069        if ((freq >= 2410) && (freq < 2475))
2070                return (freq - 2405) / 5;
2071        else if ((freq >= 2482) && (freq < 2487))
2072                return 14;
2073        else
2074                return -1;
2075}
2076
2077/**
2078 * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2079 * @tu: the TUs
2080 */
2081static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2082{
2083        return 1024 * tu;
2084}
2085
2086/**
2087 * ieee80211_check_tim - check if AID bit is set in TIM
2088 * @tim: the TIM IE
2089 * @tim_len: length of the TIM IE
2090 * @aid: the AID to look for
2091 */
2092static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2093                                       u8 tim_len, u16 aid)
2094{
2095        u8 mask;
2096        u8 index, indexn1, indexn2;
2097
2098        if (unlikely(!tim || tim_len < sizeof(*tim)))
2099                return false;
2100
2101        aid &= 0x3fff;
2102        index = aid / 8;
2103        mask  = 1 << (aid & 7);
2104
2105        indexn1 = tim->bitmap_ctrl & 0xfe;
2106        indexn2 = tim_len + indexn1 - 4;
2107
2108        if (index < indexn1 || index > indexn2)
2109                return false;
2110
2111        index -= indexn1;
2112
2113        return !!(tim->virtual_map[index] & mask);
2114}
2115
2116#endif /* LINUX_IEEE80211_H */
2117
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