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  * Copyright (c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #ifndef __LINUX_IEEE80211_H
  17 #define __LINUX_IEEE80211_H
  18
  19 /*
  20  * DS bit usage
  21  *
  22  * TA = transmitter address
  23  * RA = receiver address
  24  * DA = destination address
  25  * SA = source address
  26  *
  27  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  28  * -----------------------------------------------------------------
  29  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  30  *  0       1       DA      BSSID   SA      -       AP -> STA
  31  *  1       0       BSSID   SA      DA      -       AP <- STA
  32  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  33  */
  34
  35 #define FCS_LEN 4
  36
  37 #define IEEE80211_FCTL_VERS             0x0003
  38 #define IEEE80211_FCTL_FTYPE            0x000c
  39 #define IEEE80211_FCTL_STYPE            0x00f0
  40 #define IEEE80211_FCTL_TODS             0x0100
  41 #define IEEE80211_FCTL_FROMDS           0x0200
  42 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  43 #define IEEE80211_FCTL_RETRY            0x0800
  44 #define IEEE80211_FCTL_PM               0x1000
  45 #define IEEE80211_FCTL_MOREDATA         0x2000
  46 #define IEEE80211_FCTL_PROTECTED        0x4000
  47 #define IEEE80211_FCTL_ORDER            0x8000
  48 #define IEEE80211_FCTL_CTL_EXT          0x0f00
  49
  50 #define IEEE80211_SCTL_FRAG             0x000F
  51 #define IEEE80211_SCTL_SEQ              0xFFF0
  52
  53 #define IEEE80211_FTYPE_MGMT            0x0000
  54 #define IEEE80211_FTYPE_CTL             0x0004
  55 #define IEEE80211_FTYPE_DATA            0x0008
  56 #define IEEE80211_FTYPE_EXT             0x000c
  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_CTL_EXT         0x0060
  74 #define IEEE80211_STYPE_BACK_REQ        0x0080
  75 #define IEEE80211_STYPE_BACK            0x0090
  76 #define IEEE80211_STYPE_PSPOLL          0x00A0
  77 #define IEEE80211_STYPE_RTS             0x00B0
  78 #define IEEE80211_STYPE_CTS             0x00C0
  79 #define IEEE80211_STYPE_ACK             0x00D0
  80 #define IEEE80211_STYPE_CFEND           0x00E0
  81 #define IEEE80211_STYPE_CFENDACK        0x00F0
  82
  83 /* data */
  84 #define IEEE80211_STYPE_DATA                    0x0000
  85 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  86 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  87 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  88 #define IEEE80211_STYPE_NULLFUNC                0x0040
  89 #define IEEE80211_STYPE_CFACK                   0x0050
  90 #define IEEE80211_STYPE_CFPOLL                  0x0060
  91 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  92 #define IEEE80211_STYPE_QOS_DATA                0x0080
  93 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  94 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  95 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  96 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  97 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  98 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  99 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
 100
 101 /* extension, added by 802.11ad */
 102 #define IEEE80211_STYPE_DMG_BEACON              0x0000
 103
 104 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 105 #define IEEE80211_CTL_EXT_POLL          0x2000
 106 #define IEEE80211_CTL_EXT_SPR           0x3000
 107 #define IEEE80211_CTL_EXT_GRANT 0x4000
 108 #define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 109 #define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 110 #define IEEE80211_CTL_EXT_SSW           0x8000
 111 #define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 112 #define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 113
 114
 115 #define IEEE80211_SN_MASK               ((IEEE80211_SCTL_SEQ) >> 4)
 116 #define IEEE80211_MAX_SN                IEEE80211_SN_MASK
 117 #define IEEE80211_SN_MODULO             (IEEE80211_MAX_SN + 1)
 118
 119 static inline int ieee80211_sn_less(u16 sn1, u16 sn2)
 120 {
 121         return ((sn1 - sn2) & IEEE80211_SN_MASK) > (IEEE80211_SN_MODULO >> 1);
 122 }
 123
 124 static inline u16 ieee80211_sn_add(u16 sn1, u16 sn2)
 125 {
 126         return (sn1 + sn2) & IEEE80211_SN_MASK;
 127 }
 128
 129 static inline u16 ieee80211_sn_inc(u16 sn)
 130 {
 131         return ieee80211_sn_add(sn, 1);
 132 }
 133
 134 static inline u16 ieee80211_sn_sub(u16 sn1, u16 sn2)
 135 {
 136         return (sn1 - sn2) & IEEE80211_SN_MASK;
 137 }
 138
 139 #define IEEE80211_SEQ_TO_SN(seq)        (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 140 #define IEEE80211_SN_TO_SEQ(ssn)        (((ssn) << 4) & IEEE80211_SCTL_SEQ)
 141
 142 /* miscellaneous IEEE 802.11 constants */
 143 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 144 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 145 #define IEEE80211_MAX_AID               2007
 146 #define IEEE80211_MAX_TIM_LEN           251
 147 #define IEEE80211_MAX_MESH_PEERINGS     63
 148 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 149    6.2.1.1.2.
 150
 151    802.11e clarifies the figure in section 7.1.2. The frame body is
 152    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 153 #define IEEE80211_MAX_DATA_LEN          2304
 154 /* 802.11ad extends maximum MSDU size for DMG (freq > 40Ghz) networks
 155  * to 7920 bytes, see 8.2.3 General frame format
 156  */
 157 #define IEEE80211_MAX_DATA_LEN_DMG      7920
 158 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 159 #define IEEE80211_MAX_FRAME_LEN         2352
 160
 161 #define IEEE80211_MAX_SSID_LEN          32
 162
 163 #define IEEE80211_MAX_MESH_ID_LEN       32
 164
 165 #define IEEE80211_FIRST_TSPEC_TSID      8
 166 #define IEEE80211_NUM_TIDS              16
 167
 168 /* number of user priorities 802.11 uses */
 169 #define IEEE80211_NUM_UPS               8
 170
 171 #define IEEE80211_QOS_CTL_LEN           2
 172 /* 1d tag mask */
 173 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 174 /* TID mask */
 175 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 176 /* EOSP */
 177 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 178 /* ACK policy */
 179 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 180 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 181 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 182 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 183 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 184 /* A-MSDU 802.11n */
 185 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 186 /* Mesh Control 802.11s */
 187 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 188
 189 /* U-APSD queue for WMM IEs sent by AP */
 190 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 191 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 192
 193 /* U-APSD queues for WMM IEs sent by STA */
 194 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 195 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 196 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 197 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 198 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 199
 200 /* U-APSD max SP length for WMM IEs sent by STA */
 201 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 202 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 203 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 204 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 205 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 206 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 207
 208 #define IEEE80211_HT_CTL_LEN            4
 209
 210 struct ieee80211_hdr {
 211         __le16 frame_control;
 212         __le16 duration_id;
 213         u8 addr1[6];
 214         u8 addr2[6];
 215         u8 addr3[6];
 216         __le16 seq_ctrl;
 217         u8 addr4[6];
 218 } __packed __aligned(2);
 219
 220 struct ieee80211_hdr_3addr {
 221         __le16 frame_control;
 222         __le16 duration_id;
 223         u8 addr1[6];
 224         u8 addr2[6];
 225         u8 addr3[6];
 226         __le16 seq_ctrl;
 227 } __packed __aligned(2);
 228
 229 struct ieee80211_qos_hdr {
 230         __le16 frame_control;
 231         __le16 duration_id;
 232         u8 addr1[6];
 233         u8 addr2[6];
 234         u8 addr3[6];
 235         __le16 seq_ctrl;
 236         __le16 qos_ctrl;
 237 } __packed __aligned(2);
 238
 239 /**
 240  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 241  * @fc: frame control bytes in little-endian byteorder
 242  */
 243 static inline int ieee80211_has_tods(__le16 fc)
 244 {
 245         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 246 }
 247
 248 /**
 249  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 250  * @fc: frame control bytes in little-endian byteorder
 251  */
 252 static inline int ieee80211_has_fromds(__le16 fc)
 253 {
 254         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 255 }
 256
 257 /**
 258  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 259  * @fc: frame control bytes in little-endian byteorder
 260  */
 261 static inline int ieee80211_has_a4(__le16 fc)
 262 {
 263         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 264         return (fc & tmp) == tmp;
 265 }
 266
 267 /**
 268  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 269  * @fc: frame control bytes in little-endian byteorder
 270  */
 271 static inline int ieee80211_has_morefrags(__le16 fc)
 272 {
 273         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 274 }
 275
 276 /**
 277  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 278  * @fc: frame control bytes in little-endian byteorder
 279  */
 280 static inline int ieee80211_has_retry(__le16 fc)
 281 {
 282         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 283 }
 284
 285 /**
 286  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 287  * @fc: frame control bytes in little-endian byteorder
 288  */
 289 static inline int ieee80211_has_pm(__le16 fc)
 290 {
 291         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 292 }
 293
 294 /**
 295  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 296  * @fc: frame control bytes in little-endian byteorder
 297  */
 298 static inline int ieee80211_has_moredata(__le16 fc)
 299 {
 300         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 301 }
 302
 303 /**
 304  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 305  * @fc: frame control bytes in little-endian byteorder
 306  */
 307 static inline int ieee80211_has_protected(__le16 fc)
 308 {
 309         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 310 }
 311
 312 /**
 313  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 314  * @fc: frame control bytes in little-endian byteorder
 315  */
 316 static inline int ieee80211_has_order(__le16 fc)
 317 {
 318         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 319 }
 320
 321 /**
 322  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 323  * @fc: frame control bytes in little-endian byteorder
 324  */
 325 static inline int ieee80211_is_mgmt(__le16 fc)
 326 {
 327         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 328                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 329 }
 330
 331 /**
 332  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 333  * @fc: frame control bytes in little-endian byteorder
 334  */
 335 static inline int ieee80211_is_ctl(__le16 fc)
 336 {
 337         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 338                cpu_to_le16(IEEE80211_FTYPE_CTL);
 339 }
 340
 341 /**
 342  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 343  * @fc: frame control bytes in little-endian byteorder
 344  */
 345 static inline int ieee80211_is_data(__le16 fc)
 346 {
 347         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 348                cpu_to_le16(IEEE80211_FTYPE_DATA);
 349 }
 350
 351 /**
 352  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 353  * @fc: frame control bytes in little-endian byteorder
 354  */
 355 static inline int ieee80211_is_data_qos(__le16 fc)
 356 {
 357         /*
 358          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 359          * to check the one bit
 360          */
 361         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 362                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 363 }
 364
 365 /**
 366  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 367  * @fc: frame control bytes in little-endian byteorder
 368  */
 369 static inline int ieee80211_is_data_present(__le16 fc)
 370 {
 371         /*
 372          * mask with 0x40 and test that that bit is clear to only return true
 373          * for the data-containing substypes.
 374          */
 375         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 376                cpu_to_le16(IEEE80211_FTYPE_DATA);
 377 }
 378
 379 /**
 380  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 381  * @fc: frame control bytes in little-endian byteorder
 382  */
 383 static inline int ieee80211_is_assoc_req(__le16 fc)
 384 {
 385         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 386                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 387 }
 388
 389 /**
 390  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 391  * @fc: frame control bytes in little-endian byteorder
 392  */
 393 static inline int ieee80211_is_assoc_resp(__le16 fc)
 394 {
 395         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 396                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 397 }
 398
 399 /**
 400  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 401  * @fc: frame control bytes in little-endian byteorder
 402  */
 403 static inline int ieee80211_is_reassoc_req(__le16 fc)
 404 {
 405         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 406                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 407 }
 408
 409 /**
 410  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 411  * @fc: frame control bytes in little-endian byteorder
 412  */
 413 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 414 {
 415         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 416                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 417 }
 418
 419 /**
 420  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 421  * @fc: frame control bytes in little-endian byteorder
 422  */
 423 static inline int ieee80211_is_probe_req(__le16 fc)
 424 {
 425         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 426                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 427 }
 428
 429 /**
 430  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 431  * @fc: frame control bytes in little-endian byteorder
 432  */
 433 static inline int ieee80211_is_probe_resp(__le16 fc)
 434 {
 435         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 436                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 437 }
 438
 439 /**
 440  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 441  * @fc: frame control bytes in little-endian byteorder
 442  */
 443 static inline int ieee80211_is_beacon(__le16 fc)
 444 {
 445         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 446                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 447 }
 448
 449 /**
 450  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 451  * @fc: frame control bytes in little-endian byteorder
 452  */
 453 static inline int ieee80211_is_atim(__le16 fc)
 454 {
 455         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 456                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 457 }
 458
 459 /**
 460  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 461  * @fc: frame control bytes in little-endian byteorder
 462  */
 463 static inline int ieee80211_is_disassoc(__le16 fc)
 464 {
 465         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 466                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 467 }
 468
 469 /**
 470  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 471  * @fc: frame control bytes in little-endian byteorder
 472  */
 473 static inline int ieee80211_is_auth(__le16 fc)
 474 {
 475         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 476                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 477 }
 478
 479 /**
 480  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 481  * @fc: frame control bytes in little-endian byteorder
 482  */
 483 static inline int ieee80211_is_deauth(__le16 fc)
 484 {
 485         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 486                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 487 }
 488
 489 /**
 490  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 491  * @fc: frame control bytes in little-endian byteorder
 492  */
 493 static inline int ieee80211_is_action(__le16 fc)
 494 {
 495         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 496                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 497 }
 498
 499 /**
 500  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 501  * @fc: frame control bytes in little-endian byteorder
 502  */
 503 static inline int ieee80211_is_back_req(__le16 fc)
 504 {
 505         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 506                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 507 }
 508
 509 /**
 510  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 511  * @fc: frame control bytes in little-endian byteorder
 512  */
 513 static inline int ieee80211_is_back(__le16 fc)
 514 {
 515         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 516                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 517 }
 518
 519 /**
 520  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 521  * @fc: frame control bytes in little-endian byteorder
 522  */
 523 static inline int ieee80211_is_pspoll(__le16 fc)
 524 {
 525         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 526                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 527 }
 528
 529 /**
 530  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 531  * @fc: frame control bytes in little-endian byteorder
 532  */
 533 static inline int ieee80211_is_rts(__le16 fc)
 534 {
 535         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 536                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 537 }
 538
 539 /**
 540  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 541  * @fc: frame control bytes in little-endian byteorder
 542  */
 543 static inline int ieee80211_is_cts(__le16 fc)
 544 {
 545         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 546                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 547 }
 548
 549 /**
 550  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 551  * @fc: frame control bytes in little-endian byteorder
 552  */
 553 static inline int ieee80211_is_ack(__le16 fc)
 554 {
 555         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 556                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 557 }
 558
 559 /**
 560  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 561  * @fc: frame control bytes in little-endian byteorder
 562  */
 563 static inline int ieee80211_is_cfend(__le16 fc)
 564 {
 565         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 566                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 567 }
 568
 569 /**
 570  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 571  * @fc: frame control bytes in little-endian byteorder
 572  */
 573 static inline int ieee80211_is_cfendack(__le16 fc)
 574 {
 575         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 576                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 577 }
 578
 579 /**
 580  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 581  * @fc: frame control bytes in little-endian byteorder
 582  */
 583 static inline int ieee80211_is_nullfunc(__le16 fc)
 584 {
 585         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 586                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 587 }
 588
 589 /**
 590  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 591  * @fc: frame control bytes in little-endian byteorder
 592  */
 593 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 594 {
 595         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 596                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 597 }
 598
 599 static inline unsigned int ieee80211_hdrlen(__le16 fc)
 600 {
 601         unsigned int hdrlen = 24;
 602
 603         if (ieee80211_has_a4(fc))
 604                 hdrlen = 30;
 605
 606         if (ieee80211_is_data_qos(fc)) {
 607                 hdrlen += IEEE80211_QOS_CTL_LEN;
 608                 if (ieee80211_has_order(fc))
 609                         hdrlen += IEEE80211_HT_CTL_LEN;
 610         }
 611
 612         return hdrlen;
 613 }
 614
 615 /**
 616  * ieee80211_is_bufferable_mmpdu - check if frame is bufferable MMPDU
 617  * @fc: frame control field in little-endian byteorder
 618  */
 619 static inline bool ieee80211_is_bufferable_mmpdu(__le16 fc)
 620 {
 621         /* IEEE 802.11-2012, definition of "bufferable management frame";
 622          * note that this ignores the IBSS special case. */
 623         return ieee80211_is_mgmt(fc) &&
 624                (ieee80211_is_action(fc) ||
 625                 ieee80211_is_disassoc(fc) ||
 626                 ieee80211_is_deauth(fc));
 627 }
 628
 629 /**
 630  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 631  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 632  */
 633 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 634 {
 635         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 636 }
 637
 638 struct ieee80211s_hdr {
 639         u8 flags;
 640         u8 ttl;
 641         __le32 seqnum;
 642         u8 eaddr1[6];
 643         u8 eaddr2[6];
 644 } __packed __aligned(2);
 645
 646 /* Mesh flags */
 647 #define MESH_FLAGS_AE_A4        0x1
 648 #define MESH_FLAGS_AE_A5_A6     0x2
 649 #define MESH_FLAGS_AE           0x3
 650 #define MESH_FLAGS_PS_DEEP      0x4
 651
 652 /**
 653  * enum ieee80211_preq_flags - mesh PREQ element flags
 654  *
 655  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 656  */
 657 enum ieee80211_preq_flags {
 658         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 659 };
 660
 661 /**
 662  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 663  *
 664  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 665  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 666  */
 667 enum ieee80211_preq_target_flags {
 668         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 669         IEEE80211_PREQ_USN_FLAG = 1<<2,
 670 };
 671
 672 /**
 673  * struct ieee80211_quiet_ie
 674  *
 675  * This structure refers to "Quiet information element"
 676  */
 677 struct ieee80211_quiet_ie {
 678         u8 count;
 679         u8 period;
 680         __le16 duration;
 681         __le16 offset;
 682 } __packed;
 683
 684 /**
 685  * struct ieee80211_msrment_ie
 686  *
 687  * This structure refers to "Measurement Request/Report information element"
 688  */
 689 struct ieee80211_msrment_ie {
 690         u8 token;
 691         u8 mode;
 692         u8 type;
 693         u8 request[0];
 694 } __packed;
 695
 696 /**
 697  * struct ieee80211_channel_sw_ie
 698  *
 699  * This structure refers to "Channel Switch Announcement information element"
 700  */
 701 struct ieee80211_channel_sw_ie {
 702         u8 mode;
 703         u8 new_ch_num;
 704         u8 count;
 705 } __packed;
 706
 707 /**
 708  * struct ieee80211_ext_chansw_ie
 709  *
 710  * This structure represents the "Extended Channel Switch Announcement element"
 711  */
 712 struct ieee80211_ext_chansw_ie {
 713         u8 mode;
 714         u8 new_operating_class;
 715         u8 new_ch_num;
 716         u8 count;
 717 } __packed;
 718
 719 /**
 720  * struct ieee80211_sec_chan_offs_ie - secondary channel offset IE
 721  * @sec_chan_offs: secondary channel offset, uses IEEE80211_HT_PARAM_CHA_SEC_*
 722  *      values here
 723  * This structure represents the "Secondary Channel Offset element"
 724  */
 725 struct ieee80211_sec_chan_offs_ie {
 726         u8 sec_chan_offs;
 727 } __packed;
 728
 729 /**
 730  * struct ieee80211_mesh_chansw_params_ie - mesh channel switch parameters IE
 731  *
 732  * This structure represents the "Mesh Channel Switch Paramters element"
 733  */
 734 struct ieee80211_mesh_chansw_params_ie {
 735         u8 mesh_ttl;
 736         u8 mesh_flags;
 737         __le16 mesh_reason;
 738         __le16 mesh_pre_value;
 739 } __packed;
 740
 741 /**
 742  * struct ieee80211_wide_bw_chansw_ie - wide bandwidth channel switch IE
 743  */
 744 struct ieee80211_wide_bw_chansw_ie {
 745         u8 new_channel_width;
 746         u8 new_center_freq_seg0, new_center_freq_seg1;
 747 } __packed;
 748
 749 /**
 750  * struct ieee80211_tim
 751  *
 752  * This structure refers to "Traffic Indication Map information element"
 753  */
 754 struct ieee80211_tim_ie {
 755         u8 dtim_count;
 756         u8 dtim_period;
 757         u8 bitmap_ctrl;
 758         /* variable size: 1 - 251 bytes */
 759         u8 virtual_map[1];
 760 } __packed;
 761
 762 /**
 763  * struct ieee80211_meshconf_ie
 764  *
 765  * This structure refers to "Mesh Configuration information element"
 766  */
 767 struct ieee80211_meshconf_ie {
 768         u8 meshconf_psel;
 769         u8 meshconf_pmetric;
 770         u8 meshconf_congest;
 771         u8 meshconf_synch;
 772         u8 meshconf_auth;
 773         u8 meshconf_form;
 774         u8 meshconf_cap;
 775 } __packed;
 776
 777 /**
 778  * enum mesh_config_capab_flags - Mesh Configuration IE capability field flags
 779  *
 780  * @IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish
 781  *      additional mesh peerings with other mesh STAs
 782  * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs
 783  * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure
 784  *      is ongoing
 785  */
 786 enum mesh_config_capab_flags {
 787         IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS          = 0x01,
 788         IEEE80211_MESHCONF_CAPAB_FORWARDING             = 0x08,
 789         IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING         = 0x20,
 790 };
 791
 792 /**
 793  * mesh channel switch parameters element's flag indicator
 794  *
 795  */
 796 #define WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT BIT(0)
 797 #define WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR BIT(1)
 798 #define WLAN_EID_CHAN_SWITCH_PARAM_REASON BIT(2)
 799
 800 /**
 801  * struct ieee80211_rann_ie
 802  *
 803  * This structure refers to "Root Announcement information element"
 804  */
 805 struct ieee80211_rann_ie {
 806         u8 rann_flags;
 807         u8 rann_hopcount;
 808         u8 rann_ttl;
 809         u8 rann_addr[6];
 810         __le32 rann_seq;
 811         __le32 rann_interval;
 812         __le32 rann_metric;
 813 } __packed;
 814
 815 enum ieee80211_rann_flags {
 816         RANN_FLAG_IS_GATE = 1 << 0,
 817 };
 818
 819 enum ieee80211_ht_chanwidth_values {
 820         IEEE80211_HT_CHANWIDTH_20MHZ = 0,
 821         IEEE80211_HT_CHANWIDTH_ANY = 1,
 822 };
 823
 824 /**
 825  * enum ieee80211_opmode_bits - VHT operating mode field bits
 826  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK: channel width mask
 827  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ: 20 MHz channel width
 828  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ: 40 MHz channel width
 829  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ: 80 MHz channel width
 830  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ: 160 MHz or 80+80 MHz channel width
 831  * @IEEE80211_OPMODE_NOTIF_RX_NSS_MASK: number of spatial streams mask
 832  *      (the NSS value is the value of this field + 1)
 833  * @IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT: number of spatial streams shift
 834  * @IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF: indicates streams in SU-MIMO PPDU
 835  *      using a beamforming steering matrix
 836  */
 837 enum ieee80211_vht_opmode_bits {
 838         IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK   = 3,
 839         IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ  = 0,
 840         IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ  = 1,
 841         IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ  = 2,
 842         IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ = 3,
 843         IEEE80211_OPMODE_NOTIF_RX_NSS_MASK      = 0x70,
 844         IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT     = 4,
 845         IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF   = 0x80,
 846 };
 847
 848 #define WLAN_SA_QUERY_TR_ID_LEN 2
 849
 850 /**
 851  * struct ieee80211_tpc_report_ie
 852  *
 853  * This structure refers to "TPC Report element"
 854  */
 855 struct ieee80211_tpc_report_ie {
 856         u8 tx_power;
 857         u8 link_margin;
 858 } __packed;
 859
 860 struct ieee80211_mgmt {
 861         __le16 frame_control;
 862         __le16 duration;
 863         u8 da[6];
 864         u8 sa[6];
 865         u8 bssid[6];
 866         __le16 seq_ctrl;
 867         union {
 868                 struct {
 869                         __le16 auth_alg;
 870                         __le16 auth_transaction;
 871                         __le16 status_code;
 872                         /* possibly followed by Challenge text */
 873                         u8 variable[0];
 874                 } __packed auth;
 875                 struct {
 876                         __le16 reason_code;
 877                 } __packed deauth;
 878                 struct {
 879                         __le16 capab_info;
 880                         __le16 listen_interval;
 881                         /* followed by SSID and Supported rates */
 882                         u8 variable[0];
 883                 } __packed assoc_req;
 884                 struct {
 885                         __le16 capab_info;
 886                         __le16 status_code;
 887                         __le16 aid;
 888                         /* followed by Supported rates */
 889                         u8 variable[0];
 890                 } __packed assoc_resp, reassoc_resp;
 891                 struct {
 892                         __le16 capab_info;
 893                         __le16 listen_interval;
 894                         u8 current_ap[6];
 895                         /* followed by SSID and Supported rates */
 896                         u8 variable[0];
 897                 } __packed reassoc_req;
 898                 struct {
 899                         __le16 reason_code;
 900                 } __packed disassoc;
 901                 struct {
 902                         __le64 timestamp;
 903                         __le16 beacon_int;
 904                         __le16 capab_info;
 905                         /* followed by some of SSID, Supported rates,
 906                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 907                         u8 variable[0];
 908                 } __packed beacon;
 909                 struct {
 910                         /* only variable items: SSID, Supported rates */
 911                         u8 variable[0];
 912                 } __packed probe_req;
 913                 struct {
 914                         __le64 timestamp;
 915                         __le16 beacon_int;
 916                         __le16 capab_info;
 917                         /* followed by some of SSID, Supported rates,
 918                          * FH Params, DS Params, CF Params, IBSS Params */
 919                         u8 variable[0];
 920                 } __packed probe_resp;
 921                 struct {
 922                         u8 category;
 923                         union {
 924                                 struct {
 925                                         u8 action_code;
 926                                         u8 dialog_token;
 927                                         u8 status_code;
 928                                         u8 variable[0];
 929                                 } __packed wme_action;
 930                                 struct{
 931                                         u8 action_code;
 932                                         u8 variable[0];
 933                                 } __packed chan_switch;
 934                                 struct{
 935                                         u8 action_code;
 936                                         struct ieee80211_ext_chansw_ie data;
 937                                         u8 variable[0];
 938                                 } __packed ext_chan_switch;
 939                                 struct{
 940                                         u8 action_code;
 941                                         u8 dialog_token;
 942                                         u8 element_id;
 943                                         u8 length;
 944                                         struct ieee80211_msrment_ie msr_elem;
 945                                 } __packed measurement;
 946                                 struct{
 947                                         u8 action_code;
 948                                         u8 dialog_token;
 949                                         __le16 capab;
 950                                         __le16 timeout;
 951                                         __le16 start_seq_num;
 952                                 } __packed addba_req;
 953                                 struct{
 954                                         u8 action_code;
 955                                         u8 dialog_token;
 956                                         __le16 status;
 957                                         __le16 capab;
 958                                         __le16 timeout;
 959                                 } __packed addba_resp;
 960                                 struct{
 961                                         u8 action_code;
 962                                         __le16 params;
 963                                         __le16 reason_code;
 964                                 } __packed delba;
 965                                 struct {
 966                                         u8 action_code;
 967                                         u8 variable[0];
 968                                 } __packed self_prot;
 969                                 struct{
 970                                         u8 action_code;
 971                                         u8 variable[0];
 972                                 } __packed mesh_action;
 973                                 struct {
 974                                         u8 action;
 975                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 976                                 } __packed sa_query;
 977                                 struct {
 978                                         u8 action;
 979                                         u8 smps_control;
 980                                 } __packed ht_smps;
 981                                 struct {
 982                                         u8 action_code;
 983                                         u8 chanwidth;
 984                                 } __packed ht_notify_cw;
 985                                 struct {
 986                                         u8 action_code;
 987                                         u8 dialog_token;
 988                                         __le16 capability;
 989                                         u8 variable[0];
 990                                 } __packed tdls_discover_resp;
 991                                 struct {
 992                                         u8 action_code;
 993                                         u8 operating_mode;
 994                                 } __packed vht_opmode_notif;
 995                                 struct {
 996                                         u8 action_code;
 997                                         u8 dialog_token;
 998                                         u8 tpc_elem_id;
 999                                         u8 tpc_elem_length;
1000                                         struct ieee80211_tpc_report_ie tpc;
1001                                 } __packed tpc_report;
1002                         } u;
1003                 } __packed action;
1004         } u;
1005 } __packed __aligned(2);
1006
1007 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
1008 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
1009
1010 /* mgmt header + 1 byte category code */
1011 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
1012
1013
1014 /* Management MIC information element (IEEE 802.11w) */
1015 struct ieee80211_mmie {
1016         u8 element_id;
1017         u8 length;
1018         __le16 key_id;
1019         u8 sequence_number[6];
1020         u8 mic[8];
1021 } __packed;
1022
1023 struct ieee80211_vendor_ie {
1024         u8 element_id;
1025         u8 len;
1026         u8 oui[3];
1027         u8 oui_type;
1028 } __packed;
1029
1030 struct ieee80211_wmm_ac_param {
1031         u8 aci_aifsn; /* AIFSN, ACM, ACI */
1032         u8 cw; /* ECWmin, ECWmax (CW = 2^ECW - 1) */
1033         __le16 txop_limit;
1034 } __packed;
1035
1036 struct ieee80211_wmm_param_ie {
1037         u8 element_id; /* Element ID: 221 (0xdd); */
1038         u8 len; /* Length: 24 */
1039         /* required fields for WMM version 1 */
1040         u8 oui[3]; /* 00:50:f2 */
1041         u8 oui_type; /* 2 */
1042         u8 oui_subtype; /* 1 */
1043         u8 version; /* 1 for WMM version 1.0 */
1044         u8 qos_info; /* AP/STA specific QoS info */
1045         u8 reserved; /* 0 */
1046         /* AC_BE, AC_BK, AC_VI, AC_VO */
1047         struct ieee80211_wmm_ac_param ac[4];
1048 } __packed;
1049
1050 /* Control frames */
1051 struct ieee80211_rts {
1052         __le16 frame_control;
1053         __le16 duration;
1054         u8 ra[6];
1055         u8 ta[6];
1056 } __packed __aligned(2);
1057
1058 struct ieee80211_cts {
1059         __le16 frame_control;
1060         __le16 duration;
1061         u8 ra[6];
1062 } __packed __aligned(2);
1063
1064 struct ieee80211_pspoll {
1065         __le16 frame_control;
1066         __le16 aid;
1067         u8 bssid[6];
1068         u8 ta[6];
1069 } __packed __aligned(2);
1070
1071 /* TDLS */
1072
1073 /* Channel switch timing */
1074 struct ieee80211_ch_switch_timing {
1075         __le16 switch_time;
1076         __le16 switch_timeout;
1077 } __packed;
1078
1079 /* Link-id information element */
1080 struct ieee80211_tdls_lnkie {
1081         u8 ie_type; /* Link Identifier IE */
1082         u8 ie_len;
1083         u8 bssid[6];
1084         u8 init_sta[6];
1085         u8 resp_sta[6];
1086 } __packed;
1087
1088 struct ieee80211_tdls_data {
1089         u8 da[6];
1090         u8 sa[6];
1091         __be16 ether_type;
1092         u8 payload_type;
1093         u8 category;
1094         u8 action_code;
1095         union {
1096                 struct {
1097                         u8 dialog_token;
1098                         __le16 capability;
1099                         u8 variable[0];
1100                 } __packed setup_req;
1101                 struct {
1102                         __le16 status_code;
1103                         u8 dialog_token;
1104                         __le16 capability;
1105                         u8 variable[0];
1106                 } __packed setup_resp;
1107                 struct {
1108                         __le16 status_code;
1109                         u8 dialog_token;
1110                         u8 variable[0];
1111                 } __packed setup_cfm;
1112                 struct {
1113                         __le16 reason_code;
1114                         u8 variable[0];
1115                 } __packed teardown;
1116                 struct {
1117                         u8 dialog_token;
1118                         u8 variable[0];
1119                 } __packed discover_req;
1120                 struct {
1121                         u8 target_channel;
1122                         u8 oper_class;
1123                         u8 variable[0];
1124                 } __packed chan_switch_req;
1125                 struct {
1126                         __le16 status_code;
1127                         u8 variable[0];
1128                 } __packed chan_switch_resp;
1129         } u;
1130 } __packed;
1131
1132 /*
1133  * Peer-to-Peer IE attribute related definitions.
1134  */
1135 /**
1136  * enum ieee80211_p2p_attr_id - identifies type of peer-to-peer attribute.
1137  */
1138 enum ieee80211_p2p_attr_id {
1139         IEEE80211_P2P_ATTR_STATUS = 0,
1140         IEEE80211_P2P_ATTR_MINOR_REASON,
1141         IEEE80211_P2P_ATTR_CAPABILITY,
1142         IEEE80211_P2P_ATTR_DEVICE_ID,
1143         IEEE80211_P2P_ATTR_GO_INTENT,
1144         IEEE80211_P2P_ATTR_GO_CONFIG_TIMEOUT,
1145         IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
1146         IEEE80211_P2P_ATTR_GROUP_BSSID,
1147         IEEE80211_P2P_ATTR_EXT_LISTEN_TIMING,
1148         IEEE80211_P2P_ATTR_INTENDED_IFACE_ADDR,
1149         IEEE80211_P2P_ATTR_MANAGABILITY,
1150         IEEE80211_P2P_ATTR_CHANNEL_LIST,
1151         IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
1152         IEEE80211_P2P_ATTR_DEVICE_INFO,
1153         IEEE80211_P2P_ATTR_GROUP_INFO,
1154         IEEE80211_P2P_ATTR_GROUP_ID,
1155         IEEE80211_P2P_ATTR_INTERFACE,
1156         IEEE80211_P2P_ATTR_OPER_CHANNEL,
1157         IEEE80211_P2P_ATTR_INVITE_FLAGS,
1158         /* 19 - 220: Reserved */
1159         IEEE80211_P2P_ATTR_VENDOR_SPECIFIC = 221,
1160
1161         IEEE80211_P2P_ATTR_MAX
1162 };
1163
1164 /* Notice of Absence attribute - described in P2P spec 4.1.14 */
1165 /* Typical max value used here */
1166 #define IEEE80211_P2P_NOA_DESC_MAX      4
1167
1168 struct ieee80211_p2p_noa_desc {
1169         u8 count;
1170         __le32 duration;
1171         __le32 interval;
1172         __le32 start_time;
1173 } __packed;
1174
1175 struct ieee80211_p2p_noa_attr {
1176         u8 index;
1177         u8 oppps_ctwindow;
1178         struct ieee80211_p2p_noa_desc desc[IEEE80211_P2P_NOA_DESC_MAX];
1179 } __packed;
1180
1181 #define IEEE80211_P2P_OPPPS_ENABLE_BIT          BIT(7)
1182 #define IEEE80211_P2P_OPPPS_CTWINDOW_MASK       0x7F
1183
1184 /**
1185  * struct ieee80211_bar - HT Block Ack Request
1186  *
1187  * This structure refers to "HT BlockAckReq" as
1188  * described in 802.11n draft section 7.2.1.7.1
1189  */
1190 struct ieee80211_bar {
1191         __le16 frame_control;
1192         __le16 duration;
1193         __u8 ra[6];
1194         __u8 ta[6];
1195         __le16 control;
1196         __le16 start_seq_num;
1197 } __packed __aligned(4);
1198
1199 /* 802.11 BA(R) control masks */
1200 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
1201 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
1202 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
1203 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
1204 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
1205
1206 /**
1207  * struct ieee80211_ba - HT Block Ack
1208  *
1209  * This structure refers to "HT BlockAck" as
1210  * described in 802.11n draft section 7.2.1.8.1
1211  */
1212 struct ieee80211_ba {
1213         __le16 frame_control;
1214         __le16 duration;
1215         u8 ra[6];
1216         u8 ta[6];
1217         __le16 control;
1218
1219         __le16 start_seq_num;
1220         u8 bitmap[8];
1221 } __packed;
1222
1223 #define IEEE80211_HT_MCS_MASK_LEN               10
1224
1225 /**
1226  * struct ieee80211_mcs_info - MCS information
1227  * @rx_mask: RX mask
1228  * @rx_highest: highest supported RX rate. If set represents
1229  *      the highest supported RX data rate in units of 1 Mbps.
1230  *      If this field is 0 this value should not be used to
1231  *      consider the highest RX data rate supported.
1232  * @tx_params: TX parameters
1233  */
1234 struct ieee80211_mcs_info {
1235         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
1236         __le16 rx_highest;
1237         u8 tx_params;
1238         u8 reserved[3];
1239 } __packed;
1240
1241 /* 802.11n HT capability MSC set */
1242 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
1243 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
1244 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
1245 /* value 0 == 1 stream etc */
1246 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
1247 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
1248 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
1249 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
1250
1251 /*
1252  * 802.11n D5.0 20.3.5 / 20.6 says:
1253  * - indices 0 to 7 and 32 are single spatial stream
1254  * - 8 to 31 are multiple spatial streams using equal modulation
1255  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
1256  * - remainder are multiple spatial streams using unequal modulation
1257  */
1258 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
1259 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
1260         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
1261
1262 /**
1263  * struct ieee80211_ht_cap - HT capabilities
1264  *
1265  * This structure is the "HT capabilities element" as
1266  * described in 802.11n D5.0 7.3.2.57
1267  */
1268 struct ieee80211_ht_cap {
1269         __le16 cap_info;
1270         u8 ampdu_params_info;
1271
1272         /* 16 bytes MCS information */
1273         struct ieee80211_mcs_info mcs;
1274
1275         __le16 extended_ht_cap_info;
1276         __le32 tx_BF_cap_info;
1277         u8 antenna_selection_info;
1278 } __packed;
1279
1280 /* 802.11n HT capabilities masks (for cap_info) */
1281 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1282 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1283 #define IEEE80211_HT_CAP_SM_PS                  0x000C
1284 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1285 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
1286 #define IEEE80211_HT_CAP_SGI_20                 0x0020
1287 #define IEEE80211_HT_CAP_SGI_40                 0x0040
1288 #define IEEE80211_HT_CAP_TX_STBC                0x0080
1289 #define IEEE80211_HT_CAP_RX_STBC                0x0300
1290 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1291 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
1292 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1293 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1294 #define IEEE80211_HT_CAP_RESERVED               0x2000
1295 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1296 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1297
1298 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1299 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1300 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1301 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1302 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1303 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1304 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1305 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1306
1307 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1308 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1309 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1310 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1311
1312 /*
1313  * Maximum length of AMPDU that the STA can receive in high-throughput (HT).
1314  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1315  */
1316 enum ieee80211_max_ampdu_length_exp {
1317         IEEE80211_HT_MAX_AMPDU_8K = 0,
1318         IEEE80211_HT_MAX_AMPDU_16K = 1,
1319         IEEE80211_HT_MAX_AMPDU_32K = 2,
1320         IEEE80211_HT_MAX_AMPDU_64K = 3
1321 };
1322
1323 /*
1324  * Maximum length of AMPDU that the STA can receive in VHT.
1325  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1326  */
1327 enum ieee80211_vht_max_ampdu_length_exp {
1328         IEEE80211_VHT_MAX_AMPDU_8K = 0,
1329         IEEE80211_VHT_MAX_AMPDU_16K = 1,
1330         IEEE80211_VHT_MAX_AMPDU_32K = 2,
1331         IEEE80211_VHT_MAX_AMPDU_64K = 3,
1332         IEEE80211_VHT_MAX_AMPDU_128K = 4,
1333         IEEE80211_VHT_MAX_AMPDU_256K = 5,
1334         IEEE80211_VHT_MAX_AMPDU_512K = 6,
1335         IEEE80211_VHT_MAX_AMPDU_1024K = 7
1336 };
1337
1338 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1339
1340 /* Minimum MPDU start spacing */
1341 enum ieee80211_min_mpdu_spacing {
1342         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1343         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1344         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1345         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1346         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1347         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1348         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1349         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1350 };
1351
1352 /**
1353  * struct ieee80211_ht_operation - HT operation IE
1354  *
1355  * This structure is the "HT operation element" as
1356  * described in 802.11n-2009 7.3.2.57
1357  */
1358 struct ieee80211_ht_operation {
1359         u8 primary_chan;
1360         u8 ht_param;
1361         __le16 operation_mode;
1362         __le16 stbc_param;
1363         u8 basic_set[16];
1364 } __packed;
1365
1366 /* for ht_param */
1367 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1368 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1369 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1370 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1371 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1372 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1373
1374 /* for operation_mode */
1375 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1376 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1377 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1378 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1379 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1380 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1381 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1382
1383 /* for stbc_param */
1384 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1385 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1386 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1387 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1388 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1389 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1390
1391
1392 /* block-ack parameters */
1393 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1394 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1395 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1396 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1397 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1398
1399 /*
1400  * A-PMDU buffer sizes
1401  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1402  */
1403 #define IEEE80211_MIN_AMPDU_BUF 0x8
1404 #define IEEE80211_MAX_AMPDU_BUF 0x40
1405
1406
1407 /* Spatial Multiplexing Power Save Modes (for capability) */
1408 #define WLAN_HT_CAP_SM_PS_STATIC        0
1409 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1410 #define WLAN_HT_CAP_SM_PS_INVALID       2
1411 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1412
1413 /* for SM power control field lower two bits */
1414 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1415 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1416 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1417
1418 /**
1419  * struct ieee80211_vht_mcs_info - VHT MCS information
1420  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1421  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1422  *      STA can receive. Rate expressed in units of 1 Mbps.
1423  *      If this field is 0 this value should not be used to
1424  *      consider the highest RX data rate supported.
1425  *      The top 3 bits of this field are reserved.
1426  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1427  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1428  *      STA can transmit. Rate expressed in units of 1 Mbps.
1429  *      If this field is 0 this value should not be used to
1430  *      consider the highest TX data rate supported.
1431  *      The top 3 bits of this field are reserved.
1432  */
1433 struct ieee80211_vht_mcs_info {
1434         __le16 rx_mcs_map;
1435         __le16 rx_highest;
1436         __le16 tx_mcs_map;
1437         __le16 tx_highest;
1438 } __packed;
1439
1440 /**
1441  * enum ieee80211_vht_mcs_support - VHT MCS support definitions
1442  * @IEEE80211_VHT_MCS_SUPPORT_0_7: MCSes 0-7 are supported for the
1443  *      number of streams
1444  * @IEEE80211_VHT_MCS_SUPPORT_0_8: MCSes 0-8 are supported
1445  * @IEEE80211_VHT_MCS_SUPPORT_0_9: MCSes 0-9 are supported
1446  * @IEEE80211_VHT_MCS_NOT_SUPPORTED: This number of streams isn't supported
1447  *
1448  * These definitions are used in each 2-bit subfield of the @rx_mcs_map
1449  * and @tx_mcs_map fields of &struct ieee80211_vht_mcs_info, which are
1450  * both split into 8 subfields by number of streams. These values indicate
1451  * which MCSes are supported for the number of streams the value appears
1452  * for.
1453  */
1454 enum ieee80211_vht_mcs_support {
1455         IEEE80211_VHT_MCS_SUPPORT_0_7   = 0,
1456         IEEE80211_VHT_MCS_SUPPORT_0_8   = 1,
1457         IEEE80211_VHT_MCS_SUPPORT_0_9   = 2,
1458         IEEE80211_VHT_MCS_NOT_SUPPORTED = 3,
1459 };
1460
1461 /**
1462  * struct ieee80211_vht_cap - VHT capabilities
1463  *
1464  * This structure is the "VHT capabilities element" as
1465  * described in 802.11ac D3.0 8.4.2.160
1466  * @vht_cap_info: VHT capability info
1467  * @supp_mcs: VHT MCS supported rates
1468  */
1469 struct ieee80211_vht_cap {
1470         __le32 vht_cap_info;
1471         struct ieee80211_vht_mcs_info supp_mcs;
1472 } __packed;
1473
1474 /**
1475  * enum ieee80211_vht_chanwidth - VHT channel width
1476  * @IEEE80211_VHT_CHANWIDTH_USE_HT: use the HT operation IE to
1477  *      determine the channel width (20 or 40 MHz)
1478  * @IEEE80211_VHT_CHANWIDTH_80MHZ: 80 MHz bandwidth
1479  * @IEEE80211_VHT_CHANWIDTH_160MHZ: 160 MHz bandwidth
1480  * @IEEE80211_VHT_CHANWIDTH_80P80MHZ: 80+80 MHz bandwidth
1481  */
1482 enum ieee80211_vht_chanwidth {
1483         IEEE80211_VHT_CHANWIDTH_USE_HT          = 0,
1484         IEEE80211_VHT_CHANWIDTH_80MHZ           = 1,
1485         IEEE80211_VHT_CHANWIDTH_160MHZ          = 2,
1486         IEEE80211_VHT_CHANWIDTH_80P80MHZ        = 3,
1487 };
1488
1489 /**
1490  * struct ieee80211_vht_operation - VHT operation IE
1491  *
1492  * This structure is the "VHT operation element" as
1493  * described in 802.11ac D3.0 8.4.2.161
1494  * @chan_width: Operating channel width
1495  * @center_freq_seg1_idx: center freq segment 1 index
1496  * @center_freq_seg2_idx: center freq segment 2 index
1497  * @basic_mcs_set: VHT Basic MCS rate set
1498  */
1499 struct ieee80211_vht_operation {
1500         u8 chan_width;
1501         u8 center_freq_seg1_idx;
1502         u8 center_freq_seg2_idx;
1503         __le16 basic_mcs_set;
1504 } __packed;
1505
1506
1507 /* 802.11ac VHT Capabilities */
1508 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                  0x00000000
1509 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                  0x00000001
1510 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454                 0x00000002
1511 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ                0x00000004
1512 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ       0x00000008
1513 #define IEEE80211_VHT_CAP_RXLDPC                                0x00000010
1514 #define IEEE80211_VHT_CAP_SHORT_GI_80                           0x00000020
1515 #define IEEE80211_VHT_CAP_SHORT_GI_160                          0x00000040
1516 #define IEEE80211_VHT_CAP_TXSTBC                                0x00000080
1517 #define IEEE80211_VHT_CAP_RXSTBC_1                              0x00000100
1518 #define IEEE80211_VHT_CAP_RXSTBC_2                              0x00000200
1519 #define IEEE80211_VHT_CAP_RXSTBC_3                              0x00000300
1520 #define IEEE80211_VHT_CAP_RXSTBC_4                              0x00000400
1521 #define IEEE80211_VHT_CAP_RXSTBC_MASK                           0x00000700
1522 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE                 0x00000800
1523 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE                 0x00001000
1524 #define IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT                  13
1525 #define IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK                   \
1526                 (7 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT)
1527 #define IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT             16
1528 #define IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK              \
1529                 (7 << IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT)
1530 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE                 0x00080000
1531 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE                 0x00100000
1532 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                           0x00200000
1533 #define IEEE80211_VHT_CAP_HTC_VHT                               0x00400000
1534 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT      23
1535 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK       \
1536                 (7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT)
1537 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB     0x08000000
1538 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB       0x0c000000
1539 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                    0x10000000
1540 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                    0x20000000
1541
1542 /* Authentication algorithms */
1543 #define WLAN_AUTH_OPEN 0
1544 #define WLAN_AUTH_SHARED_KEY 1
1545 #define WLAN_AUTH_FT 2
1546 #define WLAN_AUTH_SAE 3
1547 #define WLAN_AUTH_LEAP 128
1548
1549 #define WLAN_AUTH_CHALLENGE_LEN 128
1550
1551 #define WLAN_CAPABILITY_ESS             (1<<0)
1552 #define WLAN_CAPABILITY_IBSS            (1<<1)
1553
1554 /*
1555  * A mesh STA sets the ESS and IBSS capability bits to zero.
1556  * however, this holds true for p2p probe responses (in the p2p_find
1557  * phase) as well.
1558  */
1559 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1560         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1561
1562 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1563 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1564 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1565 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1566 #define WLAN_CAPABILITY_PBCC            (1<<6)
1567 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1568
1569 /* 802.11h */
1570 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1571 #define WLAN_CAPABILITY_QOS             (1<<9)
1572 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1573 #define WLAN_CAPABILITY_APSD            (1<<11)
1574 #define WLAN_CAPABILITY_RADIO_MEASURE   (1<<12)
1575 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1576 #define WLAN_CAPABILITY_DEL_BACK        (1<<14)
1577 #define WLAN_CAPABILITY_IMM_BACK        (1<<15)
1578
1579 /* DMG (60gHz) 802.11ad */
1580 /* type - bits 0..1 */
1581 #define WLAN_CAPABILITY_DMG_TYPE_MASK           (3<<0)
1582 #define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1583 #define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1584 #define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1585
1586 #define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1587 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE         (1<<3)
1588 #define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1589 #define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1590
1591 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1592 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1593
1594 /* measurement */
1595 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1596 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1597 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1598
1599 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1600 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1601 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1602
1603 /* 802.11g ERP information element */
1604 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1605 #define WLAN_ERP_USE_PROTECTION (1<<1)
1606 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1607
1608 /* WLAN_ERP_BARKER_PREAMBLE values */
1609 enum {
1610         WLAN_ERP_PREAMBLE_SHORT = 0,
1611         WLAN_ERP_PREAMBLE_LONG = 1,
1612 };
1613
1614 /* Band ID, 802.11ad #8.4.1.45 */
1615 enum {
1616         IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1617         IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1618         IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1619         IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1620         IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1621         IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1622 };
1623
1624 /* Status codes */
1625 enum ieee80211_statuscode {
1626         WLAN_STATUS_SUCCESS = 0,
1627         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1628         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1629         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1630         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1631         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1632         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1633         WLAN_STATUS_CHALLENGE_FAIL = 15,
1634         WLAN_STATUS_AUTH_TIMEOUT = 16,
1635         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1636         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1637         /* 802.11b */
1638         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1639         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1640         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1641         /* 802.11h */
1642         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1643         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1644         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1645         /* 802.11g */
1646         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1647         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1648         /* 802.11w */
1649         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1650         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1651         /* 802.11i */
1652         WLAN_STATUS_INVALID_IE = 40,
1653         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1654         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1655         WLAN_STATUS_INVALID_AKMP = 43,
1656         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1657         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1658         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1659         /* 802.11e */
1660         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1661         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1662         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1663         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1664         WLAN_STATUS_REQUEST_DECLINED = 37,
1665         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1666         WLAN_STATUS_CHANGE_TSPEC = 39,
1667         WLAN_STATUS_WAIT_TS_DELAY = 47,
1668         WLAN_STATUS_NO_DIRECT_LINK = 48,
1669         WLAN_STATUS_STA_NOT_PRESENT = 49,
1670         WLAN_STATUS_STA_NOT_QSTA = 50,
1671         /* 802.11s */
1672         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1673         WLAN_STATUS_FCG_NOT_SUPP = 78,
1674         WLAN_STATUS_STA_NO_TBTT = 78,
1675         /* 802.11ad */
1676         WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1677         WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1678         WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1679         WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1680         WLAN_STATUS_PERFORMING_FST_NOW = 87,
1681         WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1682         WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1683         WLAN_STATUS_REJECT_DSE_BAND = 96,
1684         WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1685         WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1686 };
1687
1688
1689 /* Reason codes */
1690 enum ieee80211_reasoncode {
1691         WLAN_REASON_UNSPECIFIED = 1,
1692         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1693         WLAN_REASON_DEAUTH_LEAVING = 3,
1694         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1695         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1696         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1697         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1698         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1699         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1700         /* 802.11h */
1701         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1702         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1703         /* 802.11i */
1704         WLAN_REASON_INVALID_IE = 13,
1705         WLAN_REASON_MIC_FAILURE = 14,
1706         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1707         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1708         WLAN_REASON_IE_DIFFERENT = 17,
1709         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1710         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1711         WLAN_REASON_INVALID_AKMP = 20,
1712         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1713         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1714         WLAN_REASON_IEEE8021X_FAILED = 23,
1715         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1716         /* TDLS (802.11z) */
1717         WLAN_REASON_TDLS_TEARDOWN_UNREACHABLE = 25,
1718         WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED = 26,
1719         /* 802.11e */
1720         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1721         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1722         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1723         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1724         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1725         WLAN_REASON_QSTA_NOT_USE = 37,
1726         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1727         WLAN_REASON_QSTA_TIMEOUT = 39,
1728         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1729         /* 802.11s */
1730         WLAN_REASON_MESH_PEER_CANCELED = 52,
1731         WLAN_REASON_MESH_MAX_PEERS = 53,
1732         WLAN_REASON_MESH_CONFIG = 54,
1733         WLAN_REASON_MESH_CLOSE = 55,
1734         WLAN_REASON_MESH_MAX_RETRIES = 56,
1735         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1736         WLAN_REASON_MESH_INVALID_GTK = 58,
1737         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1738         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1739         WLAN_REASON_MESH_PATH_ERROR = 61,
1740         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1741         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1742         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1743         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1744         WLAN_REASON_MESH_CHAN = 66,
1745 };
1746
1747
1748 /* Information Element IDs */
1749 enum ieee80211_eid {
1750         WLAN_EID_SSID = 0,
1751         WLAN_EID_SUPP_RATES = 1,
1752         WLAN_EID_FH_PARAMS = 2, /* reserved now */
1753         WLAN_EID_DS_PARAMS = 3,
1754         WLAN_EID_CF_PARAMS = 4,
1755         WLAN_EID_TIM = 5,
1756         WLAN_EID_IBSS_PARAMS = 6,
1757         WLAN_EID_COUNTRY = 7,
1758         WLAN_EID_HP_PARAMS = 8,
1759         WLAN_EID_HP_TABLE = 9,
1760         WLAN_EID_REQUEST = 10,
1761         WLAN_EID_QBSS_LOAD = 11,
1762         WLAN_EID_EDCA_PARAM_SET = 12,
1763         WLAN_EID_TSPEC = 13,
1764         WLAN_EID_TCLAS = 14,
1765         WLAN_EID_SCHEDULE = 15,
1766         WLAN_EID_CHALLENGE = 16,
1767         /* 17-31 reserved for challenge text extension */
1768         WLAN_EID_PWR_CONSTRAINT = 32,
1769         WLAN_EID_PWR_CAPABILITY = 33,
1770         WLAN_EID_TPC_REQUEST = 34,
1771         WLAN_EID_TPC_REPORT = 35,
1772         WLAN_EID_SUPPORTED_CHANNELS = 36,
1773         WLAN_EID_CHANNEL_SWITCH = 37,
1774         WLAN_EID_MEASURE_REQUEST = 38,
1775         WLAN_EID_MEASURE_REPORT = 39,
1776         WLAN_EID_QUIET = 40,
1777         WLAN_EID_IBSS_DFS = 41,
1778         WLAN_EID_ERP_INFO = 42,
1779         WLAN_EID_TS_DELAY = 43,
1780         WLAN_EID_TCLAS_PROCESSING = 44,
1781         WLAN_EID_HT_CAPABILITY = 45,
1782         WLAN_EID_QOS_CAPA = 46,
1783         /* 47 reserved for Broadcom */
1784         WLAN_EID_RSN = 48,
1785         WLAN_EID_802_15_COEX = 49,
1786         WLAN_EID_EXT_SUPP_RATES = 50,
1787         WLAN_EID_AP_CHAN_REPORT = 51,
1788         WLAN_EID_NEIGHBOR_REPORT = 52,
1789         WLAN_EID_RCPI = 53,
1790         WLAN_EID_MOBILITY_DOMAIN = 54,
1791         WLAN_EID_FAST_BSS_TRANSITION = 55,
1792         WLAN_EID_TIMEOUT_INTERVAL = 56,
1793         WLAN_EID_RIC_DATA = 57,
1794         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1795         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1796         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1797         WLAN_EID_HT_OPERATION = 61,
1798         WLAN_EID_SECONDARY_CHANNEL_OFFSET = 62,
1799         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1800         WLAN_EID_ANTENNA_INFO = 64,
1801         WLAN_EID_RSNI = 65,
1802         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1803         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1804         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1805         WLAN_EID_TIME_ADVERTISEMENT = 69,
1806         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1807         WLAN_EID_MULTIPLE_BSSID = 71,
1808         WLAN_EID_BSS_COEX_2040 = 72,
1809         WLAN_EID_BSS_INTOLERANT_CHL_REPORT = 73,
1810         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1811         WLAN_EID_RIC_DESCRIPTOR = 75,
1812         WLAN_EID_MMIE = 76,
1813         WLAN_EID_ASSOC_COMEBACK_TIME = 77,
1814         WLAN_EID_EVENT_REQUEST = 78,
1815         WLAN_EID_EVENT_REPORT = 79,
1816         WLAN_EID_DIAGNOSTIC_REQUEST = 80,
1817         WLAN_EID_DIAGNOSTIC_REPORT = 81,
1818         WLAN_EID_LOCATION_PARAMS = 82,
1819         WLAN_EID_NON_TX_BSSID_CAP =  83,
1820         WLAN_EID_SSID_LIST = 84,
1821         WLAN_EID_MULTI_BSSID_IDX = 85,
1822         WLAN_EID_FMS_DESCRIPTOR = 86,
1823         WLAN_EID_FMS_REQUEST = 87,
1824         WLAN_EID_FMS_RESPONSE = 88,
1825         WLAN_EID_QOS_TRAFFIC_CAPA = 89,
1826         WLAN_EID_BSS_MAX_IDLE_PERIOD = 90,
1827         WLAN_EID_TSF_REQUEST = 91,
1828         WLAN_EID_TSF_RESPOSNE = 92,
1829         WLAN_EID_WNM_SLEEP_MODE = 93,
1830         WLAN_EID_TIM_BCAST_REQ = 94,
1831         WLAN_EID_TIM_BCAST_RESP = 95,
1832         WLAN_EID_COLL_IF_REPORT = 96,
1833         WLAN_EID_CHANNEL_USAGE = 97,
1834         WLAN_EID_TIME_ZONE = 98,
1835         WLAN_EID_DMS_REQUEST = 99,
1836         WLAN_EID_DMS_RESPONSE = 100,
1837         WLAN_EID_LINK_ID = 101,
1838         WLAN_EID_WAKEUP_SCHEDUL = 102,
1839         /* 103 reserved */
1840         WLAN_EID_CHAN_SWITCH_TIMING = 104,
1841         WLAN_EID_PTI_CONTROL = 105,
1842         WLAN_EID_PU_BUFFER_STATUS = 106,
1843         WLAN_EID_INTERWORKING = 107,
1844         WLAN_EID_ADVERTISEMENT_PROTOCOL = 108,
1845         WLAN_EID_EXPEDITED_BW_REQ = 109,
1846         WLAN_EID_QOS_MAP_SET = 110,
1847         WLAN_EID_ROAMING_CONSORTIUM = 111,
1848         WLAN_EID_EMERGENCY_ALERT = 112,
1849         WLAN_EID_MESH_CONFIG = 113,
1850         WLAN_EID_MESH_ID = 114,
1851         WLAN_EID_LINK_METRIC_REPORT = 115,
1852         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1853         WLAN_EID_PEER_MGMT = 117,
1854         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1855         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1856         WLAN_EID_BEACON_TIMING = 120,
1857         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1858         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1859         WLAN_EID_MCCAOP_ADVERT = 123,
1860         WLAN_EID_MCCAOP_TEARDOWN = 124,
1861         WLAN_EID_GANN = 125,
1862         WLAN_EID_RANN = 126,
1863         WLAN_EID_EXT_CAPABILITY = 127,
1864         /* 128, 129 reserved for Agere */
1865         WLAN_EID_PREQ = 130,
1866         WLAN_EID_PREP = 131,
1867         WLAN_EID_PERR = 132,
1868         /* 133-136 reserved for Cisco */
1869         WLAN_EID_PXU = 137,
1870         WLAN_EID_PXUC = 138,
1871         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1872         WLAN_EID_MIC = 140,
1873         WLAN_EID_DESTINATION_URI = 141,
1874         WLAN_EID_UAPSD_COEX = 142,
1875         WLAN_EID_WAKEUP_SCHEDULE = 143,
1876         WLAN_EID_EXT_SCHEDULE = 144,
1877         WLAN_EID_STA_AVAILABILITY = 145,
1878         WLAN_EID_DMG_TSPEC = 146,
1879         WLAN_EID_DMG_AT = 147,
1880         WLAN_EID_DMG_CAP = 148,
1881         /* 149 reserved for Cisco */
1882         WLAN_EID_CISCO_VENDOR_SPECIFIC = 150,
1883         WLAN_EID_DMG_OPERATION = 151,
1884         WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1885         WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1886         WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1887         /* 155-156 reserved for Cisco */
1888         WLAN_EID_AWAKE_WINDOW = 157,
1889         WLAN_EID_MULTI_BAND = 158,
1890         WLAN_EID_ADDBA_EXT = 159,
1891         WLAN_EID_NEXT_PCP_LIST = 160,
1892         WLAN_EID_PCP_HANDOVER = 161,
1893         WLAN_EID_DMG_LINK_MARGIN = 162,
1894         WLAN_EID_SWITCHING_STREAM = 163,
1895         WLAN_EID_SESSION_TRANSITION = 164,
1896         WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1897         WLAN_EID_CLUSTER_REPORT = 166,
1898         WLAN_EID_RELAY_CAP = 167,
1899         WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1900         WLAN_EID_BEAM_LINK_MAINT = 169,
1901         WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1902         WLAN_EID_U_PID = 171,
1903         WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1904         /* 173 reserved for Symbol */
1905         WLAN_EID_MCCAOP_ADV_OVERVIEW = 174,
1906         WLAN_EID_QUIET_PERIOD_REQ = 175,
1907         /* 176 reserved for Symbol */
1908         WLAN_EID_QUIET_PERIOD_RESP = 177,
1909         /* 178-179 reserved for Symbol */
1910         /* 180 reserved for ISO/IEC 20011 */
1911         WLAN_EID_EPAC_POLICY = 182,
1912         WLAN_EID_CLISTER_TIME_OFF = 183,
1913         WLAN_EID_INTER_AC_PRIO = 184,
1914         WLAN_EID_SCS_DESCRIPTOR = 185,
1915         WLAN_EID_QLOAD_REPORT = 186,
1916         WLAN_EID_HCCA_TXOP_UPDATE_COUNT = 187,
1917         WLAN_EID_HL_STREAM_ID = 188,
1918         WLAN_EID_GCR_GROUP_ADDR = 189,
1919         WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1920         WLAN_EID_VHT_CAPABILITY = 191,
1921         WLAN_EID_VHT_OPERATION = 192,
1922         WLAN_EID_EXTENDED_BSS_LOAD = 193,
1923         WLAN_EID_WIDE_BW_CHANNEL_SWITCH = 194,
1924         WLAN_EID_VHT_TX_POWER_ENVELOPE = 195,
1925         WLAN_EID_CHANNEL_SWITCH_WRAPPER = 196,
1926         WLAN_EID_AID = 197,
1927         WLAN_EID_QUIET_CHANNEL = 198,
1928         WLAN_EID_OPMODE_NOTIF = 199,
1929
1930         WLAN_EID_VENDOR_SPECIFIC = 221,
1931         WLAN_EID_QOS_PARAMETER = 222,
1932 };
1933
1934 /* Action category code */
1935 enum ieee80211_category {
1936         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1937         WLAN_CATEGORY_QOS = 1,
1938         WLAN_CATEGORY_DLS = 2,
1939         WLAN_CATEGORY_BACK = 3,
1940         WLAN_CATEGORY_PUBLIC = 4,
1941         WLAN_CATEGORY_RADIO_MEASUREMENT = 5,
1942         WLAN_CATEGORY_HT = 7,
1943         WLAN_CATEGORY_SA_QUERY = 8,
1944         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1945         WLAN_CATEGORY_TDLS = 12,
1946         WLAN_CATEGORY_MESH_ACTION = 13,
1947         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1948         WLAN_CATEGORY_SELF_PROTECTED = 15,
1949         WLAN_CATEGORY_DMG = 16,
1950         WLAN_CATEGORY_WMM = 17,
1951         WLAN_CATEGORY_FST = 18,
1952         WLAN_CATEGORY_UNPROT_DMG = 20,
1953         WLAN_CATEGORY_VHT = 21,
1954         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1955         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1956 };
1957
1958 /* SPECTRUM_MGMT action code */
1959 enum ieee80211_spectrum_mgmt_actioncode {
1960         WLAN_ACTION_SPCT_MSR_REQ = 0,
1961         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1962         WLAN_ACTION_SPCT_TPC_REQ = 2,
1963         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1964         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1965 };
1966
1967 /* HT action codes */
1968 enum ieee80211_ht_actioncode {
1969         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1970         WLAN_HT_ACTION_SMPS = 1,
1971         WLAN_HT_ACTION_PSMP = 2,
1972         WLAN_HT_ACTION_PCO_PHASE = 3,
1973         WLAN_HT_ACTION_CSI = 4,
1974         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1975         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1976         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1977 };
1978
1979 /* VHT action codes */
1980 enum ieee80211_vht_actioncode {
1981         WLAN_VHT_ACTION_COMPRESSED_BF = 0,
1982         WLAN_VHT_ACTION_GROUPID_MGMT = 1,
1983         WLAN_VHT_ACTION_OPMODE_NOTIF = 2,
1984 };
1985
1986 /* Self Protected Action codes */
1987 enum ieee80211_self_protected_actioncode {
1988         WLAN_SP_RESERVED = 0,
1989         WLAN_SP_MESH_PEERING_OPEN = 1,
1990         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1991         WLAN_SP_MESH_PEERING_CLOSE = 3,
1992         WLAN_SP_MGK_INFORM = 4,
1993         WLAN_SP_MGK_ACK = 5,
1994 };
1995
1996 /* Mesh action codes */
1997 enum ieee80211_mesh_actioncode {
1998         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1999         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
2000         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
2001         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
2002         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
2003         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
2004         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
2005         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
2006         WLAN_MESH_ACTION_MCCA_TEARDOWN,
2007         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
2008         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
2009 };
2010
2011 /* Security key length */
2012 enum ieee80211_key_len {
2013         WLAN_KEY_LEN_WEP40 = 5,
2014         WLAN_KEY_LEN_WEP104 = 13,
2015         WLAN_KEY_LEN_CCMP = 16,
2016         WLAN_KEY_LEN_TKIP = 32,
2017         WLAN_KEY_LEN_AES_CMAC = 16,
2018         WLAN_KEY_LEN_SMS4 = 32,
2019 };
2020
2021 #define IEEE80211_WEP_IV_LEN            4
2022 #define IEEE80211_WEP_ICV_LEN           4
2023 #define IEEE80211_CCMP_HDR_LEN          8
2024 #define IEEE80211_CCMP_MIC_LEN          8
2025 #define IEEE80211_CCMP_PN_LEN           6
2026 #define IEEE80211_TKIP_IV_LEN           8
2027 #define IEEE80211_TKIP_ICV_LEN          4
2028 #define IEEE80211_CMAC_PN_LEN           6
2029
2030 /* Public action codes */
2031 enum ieee80211_pub_actioncode {
2032         WLAN_PUB_ACTION_EXT_CHANSW_ANN = 4,
2033         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
2034 };
2035
2036 /* TDLS action codes */
2037 enum ieee80211_tdls_actioncode {
2038         WLAN_TDLS_SETUP_REQUEST = 0,
2039         WLAN_TDLS_SETUP_RESPONSE = 1,
2040         WLAN_TDLS_SETUP_CONFIRM = 2,
2041         WLAN_TDLS_TEARDOWN = 3,
2042         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
2043         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
2044         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
2045         WLAN_TDLS_PEER_PSM_REQUEST = 7,
2046         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
2047         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
2048         WLAN_TDLS_DISCOVERY_REQUEST = 10,
2049 };
2050
2051 /* Extended Channel Switching capability to be set in the 1st byte of
2052  * the @WLAN_EID_EXT_CAPABILITY information element
2053  */
2054 #define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING    BIT(2)
2055
2056 /* TDLS capabilities in the the 4th byte of @WLAN_EID_EXT_CAPABILITY */
2057 #define WLAN_EXT_CAPA4_TDLS_BUFFER_STA          BIT(4)
2058 #define WLAN_EXT_CAPA4_TDLS_PEER_PSM            BIT(5)
2059 #define WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH         BIT(6)
2060
2061 /* Interworking capabilities are set in 7th bit of 4th byte of the
2062  * @WLAN_EID_EXT_CAPABILITY information element
2063  */
2064 #define WLAN_EXT_CAPA4_INTERWORKING_ENABLED     BIT(7)
2065
2066 /*
2067  * TDLS capabililites to be enabled in the 5th byte of the
2068  * @WLAN_EID_EXT_CAPABILITY information element
2069  */
2070 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
2071 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
2072 #define WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED    BIT(7)
2073
2074 #define WLAN_EXT_CAPA8_OPMODE_NOTIF     BIT(6)
2075 #define WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED     BIT(7)
2076
2077 /* TDLS specific payload type in the LLC/SNAP header */
2078 #define WLAN_TDLS_SNAP_RFTYPE   0x2
2079
2080 /* BSS Coex IE information field bits */
2081 #define WLAN_BSS_COEX_INFORMATION_REQUEST       BIT(0)
2082
2083 /**
2084  * enum - mesh synchronization method identifier
2085  *
2086  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
2087  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
2088  *      that will be specified in a vendor specific information element
2089  */
2090 enum {
2091         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
2092         IEEE80211_SYNC_METHOD_VENDOR = 255,
2093 };
2094
2095 /**
2096  * enum - mesh path selection protocol identifier
2097  *
2098  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
2099  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
2100  *      be specified in a vendor specific information element
2101  */
2102 enum {
2103         IEEE80211_PATH_PROTOCOL_HWMP = 1,
2104         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
2105 };
2106
2107 /**
2108  * enum - mesh path selection metric identifier
2109  *
2110  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
2111  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
2112  *      specified in a vendor specific information element
2113  */
2114 enum {
2115         IEEE80211_PATH_METRIC_AIRTIME = 1,
2116         IEEE80211_PATH_METRIC_VENDOR = 255,
2117 };
2118
2119 /**
2120  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
2121  *
2122  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
2123  *
2124  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
2125  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
2126  *      this value
2127  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
2128  *      the proactive PREQ with proactive PREP subfield set to 0
2129  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
2130  *      supports the proactive PREQ with proactive PREP subfield set to 1
2131  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
2132  *      the proactive RANN
2133  */
2134 enum ieee80211_root_mode_identifier {
2135         IEEE80211_ROOTMODE_NO_ROOT = 0,
2136         IEEE80211_ROOTMODE_ROOT = 1,
2137         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
2138         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
2139         IEEE80211_PROACTIVE_RANN = 4,
2140 };
2141
2142 /*
2143  * IEEE 802.11-2007 7.3.2.9 Country information element
2144  *
2145  * Minimum length is 8 octets, ie len must be evenly
2146  * divisible by 2
2147  */
2148
2149 /* Although the spec says 8 I'm seeing 6 in practice */
2150 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
2151
2152 /* The Country String field of the element shall be 3 octets in length */
2153 #define IEEE80211_COUNTRY_STRING_LEN    3
2154
2155 /*
2156  * For regulatory extension stuff see IEEE 802.11-2007
2157  * Annex I (page 1141) and Annex J (page 1147). Also
2158  * review 7.3.2.9.
2159  *
2160  * When dot11RegulatoryClassesRequired is true and the
2161  * first_channel/reg_extension_id is >= 201 then the IE
2162  * compromises of the 'ext' struct represented below:
2163  *
2164  *  - Regulatory extension ID - when generating IE this just needs
2165  *    to be monotonically increasing for each triplet passed in
2166  *    the IE
2167  *  - Regulatory class - index into set of rules
2168  *  - Coverage class - index into air propagation time (Table 7-27),
2169  *    in microseconds, you can compute the air propagation time from
2170  *    the index by multiplying by 3, so index 10 yields a propagation
2171  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
2172  *    yet. A value of 0 inicates air propagation of <= 1 us.
2173  *
2174  *  See also Table I.2 for Emission limit sets and table
2175  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
2176  *  a reg_class to an emission limit set and behavior limit set.
2177  */
2178 #define IEEE80211_COUNTRY_EXTENSION_ID 201
2179
2180 /*
2181  *  Channels numbers in the IE must be monotonically increasing
2182  *  if dot11RegulatoryClassesRequired is not true.
2183  *
2184  *  If dot11RegulatoryClassesRequired is true consecutive
2185  *  subband triplets following a regulatory triplet shall
2186  *  have monotonically increasing first_channel number fields.
2187  *
2188  *  Channel numbers shall not overlap.
2189  *
2190  *  Note that max_power is signed.
2191  */
2192 struct ieee80211_country_ie_triplet {
2193         union {
2194                 struct {
2195                         u8 first_channel;
2196                         u8 num_channels;
2197                         s8 max_power;
2198                 } __packed chans;
2199                 struct {
2200                         u8 reg_extension_id;
2201                         u8 reg_class;
2202                         u8 coverage_class;
2203                 } __packed ext;
2204         };
2205 } __packed;
2206
2207 enum ieee80211_timeout_interval_type {
2208         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
2209         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
2210         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
2211 };
2212
2213 /**
2214  * struct ieee80211_timeout_interval_ie - Timeout Interval element
2215  * @type: type, see &enum ieee80211_timeout_interval_type
2216  * @value: timeout interval value
2217  */
2218 struct ieee80211_timeout_interval_ie {
2219         u8 type;
2220         __le32 value;
2221 } __packed;
2222
2223 /* BACK action code */
2224 enum ieee80211_back_actioncode {
2225         WLAN_ACTION_ADDBA_REQ = 0,
2226         WLAN_ACTION_ADDBA_RESP = 1,
2227         WLAN_ACTION_DELBA = 2,
2228 };
2229
2230 /* BACK (block-ack) parties */
2231 enum ieee80211_back_parties {
2232         WLAN_BACK_RECIPIENT = 0,
2233         WLAN_BACK_INITIATOR = 1,
2234 };
2235
2236 /* SA Query action */
2237 enum ieee80211_sa_query_action {
2238         WLAN_ACTION_SA_QUERY_REQUEST = 0,
2239         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
2240 };
2241
2242
2243 /* cipher suite selectors */
2244 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
2245 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
2246 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
2247 /* reserved:                            0x000FAC03 */
2248 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
2249 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
2250 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
2251 #define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
2252
2253 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
2254
2255 /* AKM suite selectors */
2256 #define WLAN_AKM_SUITE_8021X            0x000FAC01
2257 #define WLAN_AKM_SUITE_PSK              0x000FAC02
2258 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
2259 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
2260
2261 #define WLAN_MAX_KEY_LEN                32
2262
2263 #define WLAN_PMKID_LEN                  16
2264
2265 #define WLAN_OUI_WFA                    0x506f9a
2266 #define WLAN_OUI_TYPE_WFA_P2P           9
2267 #define WLAN_OUI_MICROSOFT              0x0050f2
2268 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
2269 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
2270 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
2271
2272 /*
2273  * WMM/802.11e Tspec Element
2274  */
2275 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
2276 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
2277
2278 enum ieee80211_tspec_status_code {
2279         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
2280         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
2281 };
2282
2283 struct ieee80211_tspec_ie {
2284         u8 element_id;
2285         u8 len;
2286         u8 oui[3];
2287         u8 oui_type;
2288         u8 oui_subtype;
2289         u8 version;
2290         __le16 tsinfo;
2291         u8 tsinfo_resvd;
2292         __le16 nominal_msdu;
2293         __le16 max_msdu;
2294         __le32 min_service_int;
2295         __le32 max_service_int;
2296         __le32 inactivity_int;
2297         __le32 suspension_int;
2298         __le32 service_start_time;
2299         __le32 min_data_rate;
2300         __le32 mean_data_rate;
2301         __le32 peak_data_rate;
2302         __le32 max_burst_size;
2303         __le32 delay_bound;
2304         __le32 min_phy_rate;
2305         __le16 sba;
2306         __le16 medium_time;
2307 } __packed;
2308
2309 /**
2310  * ieee80211_get_qos_ctl - get pointer to qos control bytes
2311  * @hdr: the frame
2312  *
2313  * The qos ctrl bytes come after the frame_control, duration, seq_num
2314  * and 3 or 4 addresses of length ETH_ALEN.
2315  * 3 addr: 2 + 2 + 2 + 3*6 = 24
2316  * 4 addr: 2 + 2 + 2 + 4*6 = 30
2317  */
2318 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
2319 {
2320         if (ieee80211_has_a4(hdr->frame_control))
2321                 return (u8 *)hdr + 30;
2322         else
2323                 return (u8 *)hdr + 24;
2324 }
2325
2326 /**
2327  * ieee80211_get_SA - get pointer to SA
2328  * @hdr: the frame
2329  *
2330  * Given an 802.11 frame, this function returns the offset
2331  * to the source address (SA). It does not verify that the
2332  * header is long enough to contain the address, and the
2333  * header must be long enough to contain the frame control
2334  * field.
2335  */
2336 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
2337 {
2338         if (ieee80211_has_a4(hdr->frame_control))
2339                 return hdr->addr4;
2340         if (ieee80211_has_fromds(hdr->frame_control))
2341                 return hdr->addr3;
2342         return hdr->addr2;
2343 }
2344
2345 /**
2346  * ieee80211_get_DA - get pointer to DA
2347  * @hdr: the frame
2348  *
2349  * Given an 802.11 frame, this function returns the offset
2350  * to the destination address (DA). It does not verify that
2351  * the header is long enough to contain the address, and the
2352  * header must be long enough to contain the frame control
2353  * field.
2354  */
2355 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
2356 {
2357         if (ieee80211_has_tods(hdr->frame_control))
2358                 return hdr->addr3;
2359         else
2360                 return hdr->addr1;
2361 }
2362
2363 /**
2364  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
2365  * @hdr: the frame (buffer must include at least the first octet of payload)
2366  */
2367 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
2368 {
2369         if (ieee80211_is_disassoc(hdr->frame_control) ||
2370             ieee80211_is_deauth(hdr->frame_control))
2371                 return true;
2372
2373         if (ieee80211_is_action(hdr->frame_control)) {
2374                 u8 *category;
2375
2376                 /*
2377                  * Action frames, excluding Public Action frames, are Robust
2378                  * Management Frames. However, if we are looking at a Protected
2379                  * frame, skip the check since the data may be encrypted and
2380                  * the frame has already been found to be a Robust Management
2381                  * Frame (by the other end).
2382                  */
2383                 if (ieee80211_has_protected(hdr->frame_control))
2384                         return true;
2385                 category = ((u8 *) hdr) + 24;
2386                 return *category != WLAN_CATEGORY_PUBLIC &&
2387                         *category != WLAN_CATEGORY_HT &&
2388                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
2389                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
2390         }
2391
2392         return false;
2393 }
2394
2395 /**
2396  * ieee80211_is_public_action - check if frame is a public action frame
2397  * @hdr: the frame
2398  * @len: length of the frame
2399  */
2400 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
2401                                               size_t len)
2402 {
2403         struct ieee80211_mgmt *mgmt = (void *)hdr;
2404
2405         if (len < IEEE80211_MIN_ACTION_SIZE)
2406                 return false;
2407         if (!ieee80211_is_action(hdr->frame_control))
2408                 return false;
2409         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
2410 }
2411
2412 /**
2413  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2414  * @tu: the TUs
2415  */
2416 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2417 {
2418         return 1024 * tu;
2419 }
2420
2421 /**
2422  * ieee80211_check_tim - check if AID bit is set in TIM
2423  * @tim: the TIM IE
2424  * @tim_len: length of the TIM IE
2425  * @aid: the AID to look for
2426  */
2427 static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
2428                                        u8 tim_len, u16 aid)
2429 {
2430         u8 mask;
2431         u8 indexn0, indexn1, indexn2;
2432
2433         if (unlikely(!tim || tim_len < sizeof(*tim)))
2434                 return false;
2435
2436         aid &= 0x3fff;
2437         indexn0 = aid / 8;
2438         mask  = 1 << (aid & 7);
2439
2440         indexn1 = tim->bitmap_ctrl & 0xfe;
2441         indexn2 = tim_len + indexn1 - 4;
2442
2443         if (indexn0 < indexn1 || indexn0 > indexn2)
2444                 return false;
2445
2446         indexn0 -= indexn1;
2447
2448         return !!(tim->virtual_map[indexn0] & mask);
2449 }
2450
2451 /* convert time units */
2452 #define TU_TO_JIFFIES(x)       (usecs_to_jiffies((x) * 1024))
2453 #define TU_TO_EXP_TIME(x)      (jiffies + TU_TO_JIFFIES(x))
2454
2455 #endif /* __LINUX_IEEE80211_H */