include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef __LINUX_IEEE80211_H
  16 #define __LINUX_IEEE80211_H
  17
  18 /*
  19  * DS bit usage
  20  *
  21  * TA = transmitter address
  22  * RA = receiver address
  23  * DA = destination address
  24  * SA = source address
  25  *
  26  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  27  * -----------------------------------------------------------------
  28  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  29  *  0       1       DA      BSSID   SA      -       AP -> STA
  30  *  1       0       BSSID   SA      DA      -       AP <- STA
  31  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  32  */
  33
  34 #define FCS_LEN 4
  35
  36 #define IEEE80211_FCTL_VERS             0x0003
  37 #define IEEE80211_FCTL_FTYPE            0x000c
  38 #define IEEE80211_FCTL_STYPE            0x00f0
  39 #define IEEE80211_FCTL_TODS             0x0100
  40 #define IEEE80211_FCTL_FROMDS           0x0200
  41 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  42 #define IEEE80211_FCTL_RETRY            0x0800
  43 #define IEEE80211_FCTL_PM               0x1000
  44 #define IEEE80211_FCTL_MOREDATA         0x2000
  45 #define IEEE80211_FCTL_PROTECTED        0x4000
  46 #define IEEE80211_FCTL_ORDER            0x8000
  47 #define IEEE80211_FCTL_CTL_EXT          0x0f00
  48
  49 #define IEEE80211_SCTL_FRAG             0x000F
  50 #define IEEE80211_SCTL_SEQ              0xFFF0
  51
  52 #define IEEE80211_FTYPE_MGMT            0x0000
  53 #define IEEE80211_FTYPE_CTL             0x0004
  54 #define IEEE80211_FTYPE_DATA            0x0008
  55 #define IEEE80211_FTYPE_EXT             0x000c
  56
  57 /* management */
  58 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  59 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  60 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  61 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  62 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  63 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  64 #define IEEE80211_STYPE_BEACON          0x0080
  65 #define IEEE80211_STYPE_ATIM            0x0090
  66 #define IEEE80211_STYPE_DISASSOC        0x00A0
  67 #define IEEE80211_STYPE_AUTH            0x00B0
  68 #define IEEE80211_STYPE_DEAUTH          0x00C0
  69 #define IEEE80211_STYPE_ACTION          0x00D0
  70
  71 /* control */
  72 #define IEEE80211_STYPE_CTL_EXT         0x0060
  73 #define IEEE80211_STYPE_BACK_REQ        0x0080
  74 #define IEEE80211_STYPE_BACK            0x0090
  75 #define IEEE80211_STYPE_PSPOLL          0x00A0
  76 #define IEEE80211_STYPE_RTS             0x00B0
  77 #define IEEE80211_STYPE_CTS             0x00C0
  78 #define IEEE80211_STYPE_ACK             0x00D0
  79 #define IEEE80211_STYPE_CFEND           0x00E0
  80 #define IEEE80211_STYPE_CFENDACK        0x00F0
  81
  82 /* data */
  83 #define IEEE80211_STYPE_DATA                    0x0000
  84 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  85 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  86 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  87 #define IEEE80211_STYPE_NULLFUNC                0x0040
  88 #define IEEE80211_STYPE_CFACK                   0x0050
  89 #define IEEE80211_STYPE_CFPOLL                  0x0060
  90 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  91 #define IEEE80211_STYPE_QOS_DATA                0x0080
  92 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  93 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  94 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  95 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  96 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  97 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  98 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  99
 100 /* extension, added by 802.11ad */
 101 #define IEEE80211_STYPE_DMG_BEACON              0x0000
 102
 103 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 104 #define IEEE80211_CTL_EXT_POLL          0x2000
 105 #define IEEE80211_CTL_EXT_SPR           0x3000
 106 #define IEEE80211_CTL_EXT_GRANT 0x4000
 107 #define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 108 #define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 109 #define IEEE80211_CTL_EXT_SSW           0x8000
 110 #define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 111 #define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 112
 113 /* miscellaneous IEEE 802.11 constants */
 114 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 115 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 116 #define IEEE80211_MAX_AID               2007
 117 #define IEEE80211_MAX_TIM_LEN           251
 118 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 119    6.2.1.1.2.
 120
 121    802.11e clarifies the figure in section 7.1.2. The frame body is
 122    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 123 #define IEEE80211_MAX_DATA_LEN          2304
 124 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 125 #define IEEE80211_MAX_FRAME_LEN         2352
 126
 127 #define IEEE80211_MAX_SSID_LEN          32
 128
 129 #define IEEE80211_MAX_MESH_ID_LEN       32
 130
 131 #define IEEE80211_QOS_CTL_LEN           2
 132 /* 1d tag mask */
 133 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 134 /* TID mask */
 135 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 136 /* EOSP */
 137 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 138 /* ACK policy */
 139 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 140 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 141 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 142 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 143 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 144 /* A-MSDU 802.11n */
 145 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 146 /* Mesh Control 802.11s */
 147 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 148
 149 /* U-APSD queue for WMM IEs sent by AP */
 150 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 151 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 152
 153 /* U-APSD queues for WMM IEs sent by STA */
 154 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 155 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 156 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 157 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 158 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 159
 160 /* U-APSD max SP length for WMM IEs sent by STA */
 161 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 162 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 163 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 164 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 165 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 166 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 167
 168 #define IEEE80211_HT_CTL_LEN            4
 169
 170 struct ieee80211_hdr {
 171         __le16 frame_control;
 172         __le16 duration_id;
 173         u8 addr1[6];
 174         u8 addr2[6];
 175         u8 addr3[6];
 176         __le16 seq_ctrl;
 177         u8 addr4[6];
 178 } __attribute__ ((packed));
 179
 180 struct ieee80211_hdr_3addr {
 181         __le16 frame_control;
 182         __le16 duration_id;
 183         u8 addr1[6];
 184         u8 addr2[6];
 185         u8 addr3[6];
 186         __le16 seq_ctrl;
 187 } __attribute__ ((packed));
 188
 189 struct ieee80211_qos_hdr {
 190         __le16 frame_control;
 191         __le16 duration_id;
 192         u8 addr1[6];
 193         u8 addr2[6];
 194         u8 addr3[6];
 195         __le16 seq_ctrl;
 196         __le16 qos_ctrl;
 197 } __attribute__ ((packed));
 198
 199 /**
 200  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 201  * @fc: frame control bytes in little-endian byteorder
 202  */
 203 static inline int ieee80211_has_tods(__le16 fc)
 204 {
 205         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 206 }
 207
 208 /**
 209  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 210  * @fc: frame control bytes in little-endian byteorder
 211  */
 212 static inline int ieee80211_has_fromds(__le16 fc)
 213 {
 214         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 215 }
 216
 217 /**
 218  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 219  * @fc: frame control bytes in little-endian byteorder
 220  */
 221 static inline int ieee80211_has_a4(__le16 fc)
 222 {
 223         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 224         return (fc & tmp) == tmp;
 225 }
 226
 227 /**
 228  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 229  * @fc: frame control bytes in little-endian byteorder
 230  */
 231 static inline int ieee80211_has_morefrags(__le16 fc)
 232 {
 233         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 234 }
 235
 236 /**
 237  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 238  * @fc: frame control bytes in little-endian byteorder
 239  */
 240 static inline int ieee80211_has_retry(__le16 fc)
 241 {
 242         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 243 }
 244
 245 /**
 246  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 247  * @fc: frame control bytes in little-endian byteorder
 248  */
 249 static inline int ieee80211_has_pm(__le16 fc)
 250 {
 251         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 252 }
 253
 254 /**
 255  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 256  * @fc: frame control bytes in little-endian byteorder
 257  */
 258 static inline int ieee80211_has_moredata(__le16 fc)
 259 {
 260         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 261 }
 262
 263 /**
 264  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 265  * @fc: frame control bytes in little-endian byteorder
 266  */
 267 static inline int ieee80211_has_protected(__le16 fc)
 268 {
 269         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 270 }
 271
 272 /**
 273  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 274  * @fc: frame control bytes in little-endian byteorder
 275  */
 276 static inline int ieee80211_has_order(__le16 fc)
 277 {
 278         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 279 }
 280
 281 /**
 282  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 283  * @fc: frame control bytes in little-endian byteorder
 284  */
 285 static inline int ieee80211_is_mgmt(__le16 fc)
 286 {
 287         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 288                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 289 }
 290
 291 /**
 292  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 293  * @fc: frame control bytes in little-endian byteorder
 294  */
 295 static inline int ieee80211_is_ctl(__le16 fc)
 296 {
 297         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 298                cpu_to_le16(IEEE80211_FTYPE_CTL);
 299 }
 300
 301 /**
 302  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 303  * @fc: frame control bytes in little-endian byteorder
 304  */
 305 static inline int ieee80211_is_data(__le16 fc)
 306 {
 307         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 308                cpu_to_le16(IEEE80211_FTYPE_DATA);
 309 }
 310
 311 /**
 312  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 313  * @fc: frame control bytes in little-endian byteorder
 314  */
 315 static inline int ieee80211_is_data_qos(__le16 fc)
 316 {
 317         /*
 318          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 319          * to check the one bit
 320          */
 321         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 322                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 323 }
 324
 325 /**
 326  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 327  * @fc: frame control bytes in little-endian byteorder
 328  */
 329 static inline int ieee80211_is_data_present(__le16 fc)
 330 {
 331         /*
 332          * mask with 0x40 and test that that bit is clear to only return true
 333          * for the data-containing substypes.
 334          */
 335         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 336                cpu_to_le16(IEEE80211_FTYPE_DATA);
 337 }
 338
 339 /**
 340  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 341  * @fc: frame control bytes in little-endian byteorder
 342  */
 343 static inline int ieee80211_is_assoc_req(__le16 fc)
 344 {
 345         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 346                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 347 }
 348
 349 /**
 350  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 351  * @fc: frame control bytes in little-endian byteorder
 352  */
 353 static inline int ieee80211_is_assoc_resp(__le16 fc)
 354 {
 355         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 356                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 357 }
 358
 359 /**
 360  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 361  * @fc: frame control bytes in little-endian byteorder
 362  */
 363 static inline int ieee80211_is_reassoc_req(__le16 fc)
 364 {
 365         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 366                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 367 }
 368
 369 /**
 370  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 371  * @fc: frame control bytes in little-endian byteorder
 372  */
 373 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 374 {
 375         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 376                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 377 }
 378
 379 /**
 380  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 381  * @fc: frame control bytes in little-endian byteorder
 382  */
 383 static inline int ieee80211_is_probe_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_PROBE_REQ);
 387 }
 388
 389 /**
 390  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 391  * @fc: frame control bytes in little-endian byteorder
 392  */
 393 static inline int ieee80211_is_probe_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_PROBE_RESP);
 397 }
 398
 399 /**
 400  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 401  * @fc: frame control bytes in little-endian byteorder
 402  */
 403 static inline int ieee80211_is_beacon(__le16 fc)
 404 {
 405         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 406                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 407 }
 408
 409 /**
 410  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 411  * @fc: frame control bytes in little-endian byteorder
 412  */
 413 static inline int ieee80211_is_atim(__le16 fc)
 414 {
 415         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 416                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 417 }
 418
 419 /**
 420  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 421  * @fc: frame control bytes in little-endian byteorder
 422  */
 423 static inline int ieee80211_is_disassoc(__le16 fc)
 424 {
 425         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 426                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 427 }
 428
 429 /**
 430  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 431  * @fc: frame control bytes in little-endian byteorder
 432  */
 433 static inline int ieee80211_is_auth(__le16 fc)
 434 {
 435         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 436                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 437 }
 438
 439 /**
 440  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 441  * @fc: frame control bytes in little-endian byteorder
 442  */
 443 static inline int ieee80211_is_deauth(__le16 fc)
 444 {
 445         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 446                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 447 }
 448
 449 /**
 450  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 451  * @fc: frame control bytes in little-endian byteorder
 452  */
 453 static inline int ieee80211_is_action(__le16 fc)
 454 {
 455         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 456                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 457 }
 458
 459 /**
 460  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 461  * @fc: frame control bytes in little-endian byteorder
 462  */
 463 static inline int ieee80211_is_back_req(__le16 fc)
 464 {
 465         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 466                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 467 }
 468
 469 /**
 470  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 471  * @fc: frame control bytes in little-endian byteorder
 472  */
 473 static inline int ieee80211_is_back(__le16 fc)
 474 {
 475         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 476                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 477 }
 478
 479 /**
 480  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 481  * @fc: frame control bytes in little-endian byteorder
 482  */
 483 static inline int ieee80211_is_pspoll(__le16 fc)
 484 {
 485         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 486                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 487 }
 488
 489 /**
 490  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 491  * @fc: frame control bytes in little-endian byteorder
 492  */
 493 static inline int ieee80211_is_rts(__le16 fc)
 494 {
 495         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 496                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 497 }
 498
 499 /**
 500  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 501  * @fc: frame control bytes in little-endian byteorder
 502  */
 503 static inline int ieee80211_is_cts(__le16 fc)
 504 {
 505         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 506                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 507 }
 508
 509 /**
 510  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 511  * @fc: frame control bytes in little-endian byteorder
 512  */
 513 static inline int ieee80211_is_ack(__le16 fc)
 514 {
 515         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 516                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 517 }
 518
 519 /**
 520  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 521  * @fc: frame control bytes in little-endian byteorder
 522  */
 523 static inline int ieee80211_is_cfend(__le16 fc)
 524 {
 525         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 526                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 527 }
 528
 529 /**
 530  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 531  * @fc: frame control bytes in little-endian byteorder
 532  */
 533 static inline int ieee80211_is_cfendack(__le16 fc)
 534 {
 535         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 536                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 537 }
 538
 539 /**
 540  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 541  * @fc: frame control bytes in little-endian byteorder
 542  */
 543 static inline int ieee80211_is_nullfunc(__le16 fc)
 544 {
 545         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 546                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 547 }
 548
 549 /**
 550  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 551  * @fc: frame control bytes in little-endian byteorder
 552  */
 553 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 554 {
 555         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 556                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 557 }
 558
 559 static inline unsigned int ieee80211_hdrlen(__le16 fc)
 560 {
 561         unsigned int hdrlen = 24;
 562
 563         if (ieee80211_has_a4(fc))
 564                 hdrlen = 30;
 565
 566         if (ieee80211_is_data_qos(fc)) {
 567                 hdrlen += IEEE80211_QOS_CTL_LEN;
 568                 if (ieee80211_has_order(fc))
 569                         hdrlen += IEEE80211_HT_CTL_LEN;
 570         }
 571
 572         return hdrlen;
 573 }
 574
 575 /**
 576  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 577  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 578  */
 579 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 580 {
 581         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 582 }
 583
 584 struct ieee80211s_hdr {
 585         u8 flags;
 586         u8 ttl;
 587         __le32 seqnum;
 588         u8 eaddr1[6];
 589         u8 eaddr2[6];
 590 } __attribute__ ((packed));
 591
 592 /* Mesh flags */
 593 #define MESH_FLAGS_AE_A4        0x1
 594 #define MESH_FLAGS_AE_A5_A6     0x2
 595 #define MESH_FLAGS_AE           0x3
 596 #define MESH_FLAGS_PS_DEEP      0x4
 597
 598 /**
 599  * enum ieee80211_preq_flags - mesh PREQ element flags
 600  *
 601  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 602  */
 603 enum ieee80211_preq_flags {
 604         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 605 };
 606
 607 /**
 608  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 609  *
 610  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 611  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 612  */
 613 enum ieee80211_preq_target_flags {
 614         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 615         IEEE80211_PREQ_USN_FLAG = 1<<2,
 616 };
 617
 618 /**
 619  * struct ieee80211_quiet_ie
 620  *
 621  * This structure refers to "Quiet information element"
 622  */
 623 struct ieee80211_quiet_ie {
 624         u8 count;
 625         u8 period;
 626         __le16 duration;
 627         __le16 offset;
 628 } __attribute__ ((packed));
 629
 630 /**
 631  * struct ieee80211_msrment_ie
 632  *
 633  * This structure refers to "Measurement Request/Report information element"
 634  */
 635 struct ieee80211_msrment_ie {
 636         u8 token;
 637         u8 mode;
 638         u8 type;
 639         u8 request[0];
 640 } __attribute__ ((packed));
 641
 642 /**
 643  * struct ieee80211_channel_sw_ie
 644  *
 645  * This structure refers to "Channel Switch Announcement information element"
 646  */
 647 struct ieee80211_channel_sw_ie {
 648         u8 mode;
 649         u8 new_ch_num;
 650         u8 count;
 651 } __attribute__ ((packed));
 652
 653 /**
 654  * struct ieee80211_tim
 655  *
 656  * This structure refers to "Traffic Indication Map information element"
 657  */
 658 struct ieee80211_tim_ie {
 659         u8 dtim_count;
 660         u8 dtim_period;
 661         u8 bitmap_ctrl;
 662         /* variable size: 1 - 251 bytes */
 663         u8 virtual_map[1];
 664 } __attribute__ ((packed));
 665
 666 /**
 667  * struct ieee80211_meshconf_ie
 668  *
 669  * This structure refers to "Mesh Configuration information element"
 670  */
 671 struct ieee80211_meshconf_ie {
 672         u8 meshconf_psel;
 673         u8 meshconf_pmetric;
 674         u8 meshconf_congest;
 675         u8 meshconf_synch;
 676         u8 meshconf_auth;
 677         u8 meshconf_form;
 678         u8 meshconf_cap;
 679 } __attribute__ ((packed));
 680
 681 /**
 682  * struct ieee80211_rann_ie
 683  *
 684  * This structure refers to "Root Announcement information element"
 685  */
 686 struct ieee80211_rann_ie {
 687         u8 rann_flags;
 688         u8 rann_hopcount;
 689         u8 rann_ttl;
 690         u8 rann_addr[6];
 691         __le32 rann_seq;
 692         __le32 rann_interval;
 693         __le32 rann_metric;
 694 } __attribute__ ((packed));
 695
 696 enum ieee80211_rann_flags {
 697         RANN_FLAG_IS_GATE = 1 << 0,
 698 };
 699
 700 #define WLAN_SA_QUERY_TR_ID_LEN 2
 701
 702 struct ieee80211_mgmt {
 703         __le16 frame_control;
 704         __le16 duration;
 705         u8 da[6];
 706         u8 sa[6];
 707         u8 bssid[6];
 708         __le16 seq_ctrl;
 709         union {
 710                 struct {
 711                         __le16 auth_alg;
 712                         __le16 auth_transaction;
 713                         __le16 status_code;
 714                         /* possibly followed by Challenge text */
 715                         u8 variable[0];
 716                 } __attribute__ ((packed)) auth;
 717                 struct {
 718                         __le16 reason_code;
 719                 } __attribute__ ((packed)) deauth;
 720                 struct {
 721                         __le16 capab_info;
 722                         __le16 listen_interval;
 723                         /* followed by SSID and Supported rates */
 724                         u8 variable[0];
 725                 } __attribute__ ((packed)) assoc_req;
 726                 struct {
 727                         __le16 capab_info;
 728                         __le16 status_code;
 729                         __le16 aid;
 730                         /* followed by Supported rates */
 731                         u8 variable[0];
 732                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 733                 struct {
 734                         __le16 capab_info;
 735                         __le16 listen_interval;
 736                         u8 current_ap[6];
 737                         /* followed by SSID and Supported rates */
 738                         u8 variable[0];
 739                 } __attribute__ ((packed)) reassoc_req;
 740                 struct {
 741                         __le16 reason_code;
 742                 } __attribute__ ((packed)) disassoc;
 743                 struct {
 744                         __le64 timestamp;
 745                         __le16 beacon_int;
 746                         __le16 capab_info;
 747                         /* followed by some of SSID, Supported rates,
 748                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 749                         u8 variable[0];
 750                 } __attribute__ ((packed)) beacon;
 751                 struct {
 752                         /* only variable items: SSID, Supported rates */
 753                         u8 variable[0];
 754                 } __attribute__ ((packed)) probe_req;
 755                 struct {
 756                         __le64 timestamp;
 757                         __le16 beacon_int;
 758                         __le16 capab_info;
 759                         /* followed by some of SSID, Supported rates,
 760                          * FH Params, DS Params, CF Params, IBSS Params */
 761                         u8 variable[0];
 762                 } __attribute__ ((packed)) probe_resp;
 763                 struct {
 764                         u8 category;
 765                         union {
 766                                 struct {
 767                                         u8 action_code;
 768                                         u8 dialog_token;
 769                                         u8 status_code;
 770                                         u8 variable[0];
 771                                 } __attribute__ ((packed)) wme_action;
 772                                 struct{
 773                                         u8 action_code;
 774                                         u8 element_id;
 775                                         u8 length;
 776                                         struct ieee80211_channel_sw_ie sw_elem;
 777                                 } __attribute__((packed)) chan_switch;
 778                                 struct{
 779                                         u8 action_code;
 780                                         u8 dialog_token;
 781                                         u8 element_id;
 782                                         u8 length;
 783                                         struct ieee80211_msrment_ie msr_elem;
 784                                 } __attribute__((packed)) measurement;
 785                                 struct{
 786                                         u8 action_code;
 787                                         u8 dialog_token;
 788                                         __le16 capab;
 789                                         __le16 timeout;
 790                                         __le16 start_seq_num;
 791                                 } __attribute__((packed)) addba_req;
 792                                 struct{
 793                                         u8 action_code;
 794                                         u8 dialog_token;
 795                                         __le16 status;
 796                                         __le16 capab;
 797                                         __le16 timeout;
 798                                 } __attribute__((packed)) addba_resp;
 799                                 struct{
 800                                         u8 action_code;
 801                                         __le16 params;
 802                                         __le16 reason_code;
 803                                 } __attribute__((packed)) delba;
 804                                 struct {
 805                                         u8 action_code;
 806                                         u8 variable[0];
 807                                 } __attribute__((packed)) self_prot;
 808                                 struct{
 809                                         u8 action_code;
 810                                         u8 variable[0];
 811                                 } __attribute__((packed)) mesh_action;
 812                                 struct {
 813                                         u8 action;
 814                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 815                                 } __attribute__ ((packed)) sa_query;
 816                                 struct {
 817                                         u8 action;
 818                                         u8 smps_control;
 819                                 } __attribute__ ((packed)) ht_smps;
 820                                 struct {
 821                                         u8 action_code;
 822                                         u8 dialog_token;
 823                                         __le16 capability;
 824                                         u8 variable[0];
 825                                 } __packed tdls_discover_resp;
 826                         } u;
 827                 } __attribute__ ((packed)) action;
 828         } u;
 829 } __attribute__ ((packed));
 830
 831 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 832 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 833
 834 /* mgmt header + 1 byte category code */
 835 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 836
 837
 838 /* Management MIC information element (IEEE 802.11w) */
 839 struct ieee80211_mmie {
 840         u8 element_id;
 841         u8 length;
 842         __le16 key_id;
 843         u8 sequence_number[6];
 844         u8 mic[8];
 845 } __attribute__ ((packed));
 846
 847 struct ieee80211_vendor_ie {
 848         u8 element_id;
 849         u8 len;
 850         u8 oui[3];
 851         u8 oui_type;
 852 } __packed;
 853
 854 /* Control frames */
 855 struct ieee80211_rts {
 856         __le16 frame_control;
 857         __le16 duration;
 858         u8 ra[6];
 859         u8 ta[6];
 860 } __attribute__ ((packed));
 861
 862 struct ieee80211_cts {
 863         __le16 frame_control;
 864         __le16 duration;
 865         u8 ra[6];
 866 } __attribute__ ((packed));
 867
 868 struct ieee80211_pspoll {
 869         __le16 frame_control;
 870         __le16 aid;
 871         u8 bssid[6];
 872         u8 ta[6];
 873 } __attribute__ ((packed));
 874
 875 /* TDLS */
 876
 877 /* Link-id information element */
 878 struct ieee80211_tdls_lnkie {
 879         u8 ie_type; /* Link Identifier IE */
 880         u8 ie_len;
 881         u8 bssid[6];
 882         u8 init_sta[6];
 883         u8 resp_sta[6];
 884 } __packed;
 885
 886 struct ieee80211_tdls_data {
 887         u8 da[6];
 888         u8 sa[6];
 889         __be16 ether_type;
 890         u8 payload_type;
 891         u8 category;
 892         u8 action_code;
 893         union {
 894                 struct {
 895                         u8 dialog_token;
 896                         __le16 capability;
 897                         u8 variable[0];
 898                 } __packed setup_req;
 899                 struct {
 900                         __le16 status_code;
 901                         u8 dialog_token;
 902                         __le16 capability;
 903                         u8 variable[0];
 904                 } __packed setup_resp;
 905                 struct {
 906                         __le16 status_code;
 907                         u8 dialog_token;
 908                         u8 variable[0];
 909                 } __packed setup_cfm;
 910                 struct {
 911                         __le16 reason_code;
 912                         u8 variable[0];
 913                 } __packed teardown;
 914                 struct {
 915                         u8 dialog_token;
 916                         u8 variable[0];
 917                 } __packed discover_req;
 918         } u;
 919 } __packed;
 920
 921 /**
 922  * struct ieee80211_bar - HT Block Ack Request
 923  *
 924  * This structure refers to "HT BlockAckReq" as
 925  * described in 802.11n draft section 7.2.1.7.1
 926  */
 927 struct ieee80211_bar {
 928         __le16 frame_control;
 929         __le16 duration;
 930         __u8 ra[6];
 931         __u8 ta[6];
 932         __le16 control;
 933         __le16 start_seq_num;
 934 } __attribute__((packed)) __aligned(4);
 935
 936 /* 802.11 BA(R) control masks */
 937 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 938 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 939 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 940 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 941 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 942
 943 /**
 944  * struct ieee80211_ba - HT Block Ack
 945  *
 946  * This structure refers to "HT BlockAck" as
 947  * described in 802.11n draft section 7.2.1.8.1
 948  */
 949 struct ieee80211_ba {
 950         __le16 frame_control;
 951         __le16 duration;
 952         u8 ra[6];
 953         u8 ta[6];
 954         __le16 control;
 955
 956         __le16 start_seq_num;
 957         u8 bitmap[8];
 958 } __attribute__((packed));
 959
 960 #define IEEE80211_HT_MCS_MASK_LEN               10
 961
 962 /**
 963  * struct ieee80211_mcs_info - MCS information
 964  * @rx_mask: RX mask
 965  * @rx_highest: highest supported RX rate. If set represents
 966  *      the highest supported RX data rate in units of 1 Mbps.
 967  *      If this field is 0 this value should not be used to
 968  *      consider the highest RX data rate supported.
 969  * @tx_params: TX parameters
 970  */
 971 struct ieee80211_mcs_info {
 972         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 973         __le16 rx_highest;
 974         u8 tx_params;
 975         u8 reserved[3];
 976 } __attribute__((packed));
 977
 978 /* 802.11n HT capability MSC set */
 979 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 980 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 981 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 982 /* value 0 == 1 stream etc */
 983 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 984 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 985 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 986 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 987
 988 /*
 989  * 802.11n D5.0 20.3.5 / 20.6 says:
 990  * - indices 0 to 7 and 32 are single spatial stream
 991  * - 8 to 31 are multiple spatial streams using equal modulation
 992  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 993  * - remainder are multiple spatial streams using unequal modulation
 994  */
 995 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 996 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 997         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 998
 999 /**
1000  * struct ieee80211_ht_cap - HT capabilities
1001  *
1002  * This structure is the "HT capabilities element" as
1003  * described in 802.11n D5.0 7.3.2.57
1004  */
1005 struct ieee80211_ht_cap {
1006         __le16 cap_info;
1007         u8 ampdu_params_info;
1008
1009         /* 16 bytes MCS information */
1010         struct ieee80211_mcs_info mcs;
1011
1012         __le16 extended_ht_cap_info;
1013         __le32 tx_BF_cap_info;
1014         u8 antenna_selection_info;
1015 } __attribute__ ((packed));
1016
1017 /* 802.11n HT capabilities masks (for cap_info) */
1018 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1019 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1020 #define IEEE80211_HT_CAP_SM_PS                  0x000C
1021 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1022 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
1023 #define IEEE80211_HT_CAP_SGI_20                 0x0020
1024 #define IEEE80211_HT_CAP_SGI_40                 0x0040
1025 #define IEEE80211_HT_CAP_TX_STBC                0x0080
1026 #define IEEE80211_HT_CAP_RX_STBC                0x0300
1027 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1028 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
1029 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1030 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1031 #define IEEE80211_HT_CAP_RESERVED               0x2000
1032 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1033 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1034
1035 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1036 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1037 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1038 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1039 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1040 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1041 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1042 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1043
1044 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1045 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1046 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1047 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1048
1049 /*
1050  * Maximum length of AMPDU that the STA can receive.
1051  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1052  */
1053 enum ieee80211_max_ampdu_length_exp {
1054         IEEE80211_HT_MAX_AMPDU_8K = 0,
1055         IEEE80211_HT_MAX_AMPDU_16K = 1,
1056         IEEE80211_HT_MAX_AMPDU_32K = 2,
1057         IEEE80211_HT_MAX_AMPDU_64K = 3
1058 };
1059
1060 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1061
1062 /* Minimum MPDU start spacing */
1063 enum ieee80211_min_mpdu_spacing {
1064         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1065         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1066         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1067         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1068         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1069         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1070         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1071         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1072 };
1073
1074 /**
1075  * struct ieee80211_ht_operation - HT operation IE
1076  *
1077  * This structure is the "HT operation element" as
1078  * described in 802.11n-2009 7.3.2.57
1079  */
1080 struct ieee80211_ht_operation {
1081         u8 primary_chan;
1082         u8 ht_param;
1083         __le16 operation_mode;
1084         __le16 stbc_param;
1085         u8 basic_set[16];
1086 } __attribute__ ((packed));
1087
1088 /* for ht_param */
1089 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1090 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1091 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1092 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1093 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1094 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1095
1096 /* for operation_mode */
1097 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1098 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1099 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1100 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1101 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1102 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1103 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1104
1105 /* for stbc_param */
1106 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1107 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1108 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1109 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1110 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1111 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1112
1113
1114 /* block-ack parameters */
1115 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1116 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1117 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1118 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1119 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1120
1121 /*
1122  * A-PMDU buffer sizes
1123  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1124  */
1125 #define IEEE80211_MIN_AMPDU_BUF 0x8
1126 #define IEEE80211_MAX_AMPDU_BUF 0x40
1127
1128
1129 /* Spatial Multiplexing Power Save Modes (for capability) */
1130 #define WLAN_HT_CAP_SM_PS_STATIC        0
1131 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1132 #define WLAN_HT_CAP_SM_PS_INVALID       2
1133 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1134
1135 /* for SM power control field lower two bits */
1136 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1137 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1138 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1139
1140 #define VHT_MCS_SUPPORTED_SET_SIZE      8
1141
1142 struct ieee80211_vht_capabilities {
1143         __le32 vht_capabilities_info;
1144         u8 vht_supported_mcs_set[VHT_MCS_SUPPORTED_SET_SIZE];
1145 } __packed;
1146
1147 struct ieee80211_vht_operation {
1148         u8 vht_op_info_chwidth;
1149         u8 vht_op_info_chan_center_freq_seg1_idx;
1150         u8 vht_op_info_chan_center_freq_seg2_idx;
1151         __le16 vht_basic_mcs_set;
1152 } __packed;
1153
1154 /**
1155  * struct ieee80211_vht_mcs_info - VHT MCS information
1156  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1157  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1158  *      STA can receive. Rate expressed in units of 1 Mbps.
1159  *      If this field is 0 this value should not be used to
1160  *      consider the highest RX data rate supported.
1161  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1162  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1163  *      STA can transmit. Rate expressed in units of 1 Mbps.
1164  *      If this field is 0 this value should not be used to
1165  *      consider the highest TX data rate supported.
1166  */
1167 struct ieee80211_vht_mcs_info {
1168         __le16 rx_mcs_map;
1169         __le16 rx_highest;
1170         __le16 tx_mcs_map;
1171         __le16 tx_highest;
1172 } __packed;
1173
1174 #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1175 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1176 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT  2
1177 #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1178
1179 /* 802.11ac VHT Capabilities */
1180 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                0x00000000
1181 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                0x00000001
1182 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454               0x00000002
1183 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ              0x00000004
1184 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ     0x00000008
1185 #define IEEE80211_VHT_CAP_RXLDPC                              0x00000010
1186 #define IEEE80211_VHT_CAP_SHORT_GI_80                         0x00000020
1187 #define IEEE80211_VHT_CAP_SHORT_GI_160                        0x00000040
1188 #define IEEE80211_VHT_CAP_TXSTBC                              0x00000080
1189 #define IEEE80211_VHT_CAP_RXSTBC_1                            0x00000100
1190 #define IEEE80211_VHT_CAP_RXSTBC_2                            0x00000200
1191 #define IEEE80211_VHT_CAP_RXSTBC_3                            0x00000300
1192 #define IEEE80211_VHT_CAP_RXSTBC_4                            0x00000400
1193 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE               0x00000800
1194 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE               0x00001000
1195 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX             0x00006000
1196 #define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX              0x00030000
1197 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE               0x00080000
1198 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE               0x00100000
1199 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                         0x00200000
1200 #define IEEE80211_VHT_CAP_HTC_VHT                             0x00400000
1201 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT          0x00800000
1202 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB   0x08000000
1203 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB     0x0c000000
1204 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                  0x10000000
1205 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                  0x20000000
1206
1207 /* Authentication algorithms */
1208 #define WLAN_AUTH_OPEN 0
1209 #define WLAN_AUTH_SHARED_KEY 1
1210 #define WLAN_AUTH_FT 2
1211 #define WLAN_AUTH_SAE 3
1212 #define WLAN_AUTH_LEAP 128
1213
1214 #define WLAN_AUTH_CHALLENGE_LEN 128
1215
1216 #define WLAN_CAPABILITY_ESS             (1<<0)
1217 #define WLAN_CAPABILITY_IBSS            (1<<1)
1218
1219 /*
1220  * A mesh STA sets the ESS and IBSS capability bits to zero.
1221  * however, this holds true for p2p probe responses (in the p2p_find
1222  * phase) as well.
1223  */
1224 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1225         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1226
1227 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1228 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1229 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1230 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1231 #define WLAN_CAPABILITY_PBCC            (1<<6)
1232 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1233
1234 /* 802.11h */
1235 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1236 #define WLAN_CAPABILITY_QOS             (1<<9)
1237 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1238 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1239
1240 /* DMG (60gHz) 802.11ad */
1241 /* type - bits 0..1 */
1242 #define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1243 #define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1244 #define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1245
1246 #define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1247 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
1248 #define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1249 #define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1250
1251 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1252 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1253
1254 /* measurement */
1255 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1256 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1257 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1258
1259 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1260 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1261 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1262
1263 /* 802.11g ERP information element */
1264 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1265 #define WLAN_ERP_USE_PROTECTION (1<<1)
1266 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1267
1268 /* WLAN_ERP_BARKER_PREAMBLE values */
1269 enum {
1270         WLAN_ERP_PREAMBLE_SHORT = 0,
1271         WLAN_ERP_PREAMBLE_LONG = 1,
1272 };
1273
1274 /* Band ID, 802.11ad #8.4.1.45 */
1275 enum {
1276         IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1277         IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1278         IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1279         IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1280         IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1281         IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1282 };
1283
1284 /* Status codes */
1285 enum ieee80211_statuscode {
1286         WLAN_STATUS_SUCCESS = 0,
1287         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1288         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1289         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1290         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1291         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1292         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1293         WLAN_STATUS_CHALLENGE_FAIL = 15,
1294         WLAN_STATUS_AUTH_TIMEOUT = 16,
1295         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1296         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1297         /* 802.11b */
1298         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1299         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1300         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1301         /* 802.11h */
1302         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1303         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1304         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1305         /* 802.11g */
1306         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1307         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1308         /* 802.11w */
1309         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1310         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1311         /* 802.11i */
1312         WLAN_STATUS_INVALID_IE = 40,
1313         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1314         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1315         WLAN_STATUS_INVALID_AKMP = 43,
1316         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1317         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1318         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1319         /* 802.11e */
1320         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1321         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1322         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1323         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1324         WLAN_STATUS_REQUEST_DECLINED = 37,
1325         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1326         WLAN_STATUS_CHANGE_TSPEC = 39,
1327         WLAN_STATUS_WAIT_TS_DELAY = 47,
1328         WLAN_STATUS_NO_DIRECT_LINK = 48,
1329         WLAN_STATUS_STA_NOT_PRESENT = 49,
1330         WLAN_STATUS_STA_NOT_QSTA = 50,
1331         /* 802.11s */
1332         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1333         WLAN_STATUS_FCG_NOT_SUPP = 78,
1334         WLAN_STATUS_STA_NO_TBTT = 78,
1335         /* 802.11ad */
1336         WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1337         WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1338         WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1339         WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1340         WLAN_STATUS_PERFORMING_FST_NOW = 87,
1341         WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1342         WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1343         WLAN_STATUS_REJECT_DSE_BAND = 96,
1344         WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1345         WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1346 };
1347
1348
1349 /* Reason codes */
1350 enum ieee80211_reasoncode {
1351         WLAN_REASON_UNSPECIFIED = 1,
1352         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1353         WLAN_REASON_DEAUTH_LEAVING = 3,
1354         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1355         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1356         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1357         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1358         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1359         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1360         /* 802.11h */
1361         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1362         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1363         /* 802.11i */
1364         WLAN_REASON_INVALID_IE = 13,
1365         WLAN_REASON_MIC_FAILURE = 14,
1366         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1367         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1368         WLAN_REASON_IE_DIFFERENT = 17,
1369         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1370         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1371         WLAN_REASON_INVALID_AKMP = 20,
1372         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1373         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1374         WLAN_REASON_IEEE8021X_FAILED = 23,
1375         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1376         /* 802.11e */
1377         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1378         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1379         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1380         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1381         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1382         WLAN_REASON_QSTA_NOT_USE = 37,
1383         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1384         WLAN_REASON_QSTA_TIMEOUT = 39,
1385         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1386         /* 802.11s */
1387         WLAN_REASON_MESH_PEER_CANCELED = 52,
1388         WLAN_REASON_MESH_MAX_PEERS = 53,
1389         WLAN_REASON_MESH_CONFIG = 54,
1390         WLAN_REASON_MESH_CLOSE = 55,
1391         WLAN_REASON_MESH_MAX_RETRIES = 56,
1392         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1393         WLAN_REASON_MESH_INVALID_GTK = 58,
1394         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1395         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1396         WLAN_REASON_MESH_PATH_ERROR = 61,
1397         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1398         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1399         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1400         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1401         WLAN_REASON_MESH_CHAN = 66,
1402 };
1403
1404
1405 /* Information Element IDs */
1406 enum ieee80211_eid {
1407         WLAN_EID_SSID = 0,
1408         WLAN_EID_SUPP_RATES = 1,
1409         WLAN_EID_FH_PARAMS = 2,
1410         WLAN_EID_DS_PARAMS = 3,
1411         WLAN_EID_CF_PARAMS = 4,
1412         WLAN_EID_TIM = 5,
1413         WLAN_EID_IBSS_PARAMS = 6,
1414         WLAN_EID_CHALLENGE = 16,
1415
1416         WLAN_EID_COUNTRY = 7,
1417         WLAN_EID_HP_PARAMS = 8,
1418         WLAN_EID_HP_TABLE = 9,
1419         WLAN_EID_REQUEST = 10,
1420
1421         WLAN_EID_QBSS_LOAD = 11,
1422         WLAN_EID_EDCA_PARAM_SET = 12,
1423         WLAN_EID_TSPEC = 13,
1424         WLAN_EID_TCLAS = 14,
1425         WLAN_EID_SCHEDULE = 15,
1426         WLAN_EID_TS_DELAY = 43,
1427         WLAN_EID_TCLAS_PROCESSING = 44,
1428         WLAN_EID_QOS_CAPA = 46,
1429         /* 802.11z */
1430         WLAN_EID_LINK_ID = 101,
1431         /* 802.11s */
1432         WLAN_EID_MESH_CONFIG = 113,
1433         WLAN_EID_MESH_ID = 114,
1434         WLAN_EID_LINK_METRIC_REPORT = 115,
1435         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1436         WLAN_EID_PEER_MGMT = 117,
1437         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1438         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1439         WLAN_EID_BEACON_TIMING = 120,
1440         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1441         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1442         WLAN_EID_MCCAOP_ADVERT = 123,
1443         WLAN_EID_MCCAOP_TEARDOWN = 124,
1444         WLAN_EID_GANN = 125,
1445         WLAN_EID_RANN = 126,
1446         WLAN_EID_PREQ = 130,
1447         WLAN_EID_PREP = 131,
1448         WLAN_EID_PERR = 132,
1449         WLAN_EID_PXU = 137,
1450         WLAN_EID_PXUC = 138,
1451         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1452         WLAN_EID_MIC = 140,
1453
1454         WLAN_EID_PWR_CONSTRAINT = 32,
1455         WLAN_EID_PWR_CAPABILITY = 33,
1456         WLAN_EID_TPC_REQUEST = 34,
1457         WLAN_EID_TPC_REPORT = 35,
1458         WLAN_EID_SUPPORTED_CHANNELS = 36,
1459         WLAN_EID_CHANNEL_SWITCH = 37,
1460         WLAN_EID_MEASURE_REQUEST = 38,
1461         WLAN_EID_MEASURE_REPORT = 39,
1462         WLAN_EID_QUIET = 40,
1463         WLAN_EID_IBSS_DFS = 41,
1464
1465         WLAN_EID_ERP_INFO = 42,
1466         WLAN_EID_EXT_SUPP_RATES = 50,
1467
1468         WLAN_EID_HT_CAPABILITY = 45,
1469         WLAN_EID_HT_OPERATION = 61,
1470
1471         WLAN_EID_RSN = 48,
1472         WLAN_EID_MMIE = 76,
1473         WLAN_EID_WPA = 221,
1474         WLAN_EID_GENERIC = 221,
1475         WLAN_EID_VENDOR_SPECIFIC = 221,
1476         WLAN_EID_QOS_PARAMETER = 222,
1477
1478         WLAN_EID_AP_CHAN_REPORT = 51,
1479         WLAN_EID_NEIGHBOR_REPORT = 52,
1480         WLAN_EID_RCPI = 53,
1481         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1482         WLAN_EID_ANTENNA_INFO = 64,
1483         WLAN_EID_RSNI = 65,
1484         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1485         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1486         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1487         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1488         WLAN_EID_MULTIPLE_BSSID = 71,
1489         WLAN_EID_BSS_COEX_2040 = 72,
1490         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1491         WLAN_EID_EXT_CAPABILITY = 127,
1492
1493         WLAN_EID_MOBILITY_DOMAIN = 54,
1494         WLAN_EID_FAST_BSS_TRANSITION = 55,
1495         WLAN_EID_TIMEOUT_INTERVAL = 56,
1496         WLAN_EID_RIC_DATA = 57,
1497         WLAN_EID_RIC_DESCRIPTOR = 75,
1498
1499         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1500         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1501         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1502
1503         WLAN_EID_VHT_CAPABILITY = 191,
1504         WLAN_EID_VHT_OPERATION = 192,
1505
1506         /* 802.11ad */
1507         WLAN_EID_NON_TX_BSSID_CAP =  83,
1508         WLAN_EID_WAKEUP_SCHEDULE = 143,
1509         WLAN_EID_EXT_SCHEDULE = 144,
1510         WLAN_EID_STA_AVAILABILITY = 145,
1511         WLAN_EID_DMG_TSPEC = 146,
1512         WLAN_EID_DMG_AT = 147,
1513         WLAN_EID_DMG_CAP = 148,
1514         WLAN_EID_DMG_OPERATION = 151,
1515         WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1516         WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1517         WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1518         WLAN_EID_AWAKE_WINDOW = 157,
1519         WLAN_EID_MULTI_BAND = 158,
1520         WLAN_EID_ADDBA_EXT = 159,
1521         WLAN_EID_NEXT_PCP_LIST = 160,
1522         WLAN_EID_PCP_HANDOVER = 161,
1523         WLAN_EID_DMG_LINK_MARGIN = 162,
1524         WLAN_EID_SWITCHING_STREAM = 163,
1525         WLAN_EID_SESSION_TRANSITION = 164,
1526         WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1527         WLAN_EID_CLUSTER_REPORT = 166,
1528         WLAN_EID_RELAY_CAP = 167,
1529         WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1530         WLAN_EID_BEAM_LINK_MAINT = 169,
1531         WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1532         WLAN_EID_U_PID = 171,
1533         WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1534         WLAN_EID_QUIET_PERIOD_REQ = 175,
1535         WLAN_EID_QUIET_PERIOD_RESP = 177,
1536         WLAN_EID_EPAC_POLICY = 182,
1537         WLAN_EID_CLISTER_TIME_OFF = 183,
1538         WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1539 };
1540
1541 /* Action category code */
1542 enum ieee80211_category {
1543         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1544         WLAN_CATEGORY_QOS = 1,
1545         WLAN_CATEGORY_DLS = 2,
1546         WLAN_CATEGORY_BACK = 3,
1547         WLAN_CATEGORY_PUBLIC = 4,
1548         WLAN_CATEGORY_HT = 7,
1549         WLAN_CATEGORY_SA_QUERY = 8,
1550         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1551         WLAN_CATEGORY_TDLS = 12,
1552         WLAN_CATEGORY_MESH_ACTION = 13,
1553         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1554         WLAN_CATEGORY_SELF_PROTECTED = 15,
1555         WLAN_CATEGORY_DMG = 16,
1556         WLAN_CATEGORY_WMM = 17,
1557         WLAN_CATEGORY_FST = 18,
1558         WLAN_CATEGORY_UNPROT_DMG = 20,
1559         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1560         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1561 };
1562
1563 /* SPECTRUM_MGMT action code */
1564 enum ieee80211_spectrum_mgmt_actioncode {
1565         WLAN_ACTION_SPCT_MSR_REQ = 0,
1566         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1567         WLAN_ACTION_SPCT_TPC_REQ = 2,
1568         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1569         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1570 };
1571
1572 /* HT action codes */
1573 enum ieee80211_ht_actioncode {
1574         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1575         WLAN_HT_ACTION_SMPS = 1,
1576         WLAN_HT_ACTION_PSMP = 2,
1577         WLAN_HT_ACTION_PCO_PHASE = 3,
1578         WLAN_HT_ACTION_CSI = 4,
1579         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1580         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1581         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1582 };
1583
1584 /* Self Protected Action codes */
1585 enum ieee80211_self_protected_actioncode {
1586         WLAN_SP_RESERVED = 0,
1587         WLAN_SP_MESH_PEERING_OPEN = 1,
1588         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1589         WLAN_SP_MESH_PEERING_CLOSE = 3,
1590         WLAN_SP_MGK_INFORM = 4,
1591         WLAN_SP_MGK_ACK = 5,
1592 };
1593
1594 /* Mesh action codes */
1595 enum ieee80211_mesh_actioncode {
1596         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1597         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1598         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1599         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1600         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1601         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1602         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1603         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1604         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1605         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1606         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1607 };
1608
1609 /* Security key length */
1610 enum ieee80211_key_len {
1611         WLAN_KEY_LEN_WEP40 = 5,
1612         WLAN_KEY_LEN_WEP104 = 13,
1613         WLAN_KEY_LEN_CCMP = 16,
1614         WLAN_KEY_LEN_TKIP = 32,
1615         WLAN_KEY_LEN_AES_CMAC = 16,
1616 };
1617
1618 /* Public action codes */
1619 enum ieee80211_pub_actioncode {
1620         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1621 };
1622
1623 /* TDLS action codes */
1624 enum ieee80211_tdls_actioncode {
1625         WLAN_TDLS_SETUP_REQUEST = 0,
1626         WLAN_TDLS_SETUP_RESPONSE = 1,
1627         WLAN_TDLS_SETUP_CONFIRM = 2,
1628         WLAN_TDLS_TEARDOWN = 3,
1629         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1630         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1631         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1632         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1633         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1634         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1635         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1636 };
1637
1638 /*
1639  * TDLS capabililites to be enabled in the 5th byte of the
1640  * @WLAN_EID_EXT_CAPABILITY information element
1641  */
1642 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1643 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1644
1645 /* TDLS specific payload type in the LLC/SNAP header */
1646 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1647
1648 /**
1649  * enum - mesh synchronization method identifier
1650  *
1651  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1652  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1653  *      that will be specified in a vendor specific information element
1654  */
1655 enum {
1656         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1657         IEEE80211_SYNC_METHOD_VENDOR = 255,
1658 };
1659
1660 /**
1661  * enum - mesh path selection protocol identifier
1662  *
1663  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1664  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1665  *      be specified in a vendor specific information element
1666  */
1667 enum {
1668         IEEE80211_PATH_PROTOCOL_HWMP = 1,
1669         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1670 };
1671
1672 /**
1673  * enum - mesh path selection metric identifier
1674  *
1675  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1676  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1677  *      specified in a vendor specific information element
1678  */
1679 enum {
1680         IEEE80211_PATH_METRIC_AIRTIME = 1,
1681         IEEE80211_PATH_METRIC_VENDOR = 255,
1682 };
1683
1684 /**
1685  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1686  *
1687  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1688  *
1689  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1690  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1691  *      this value
1692  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1693  *      the proactive PREQ with proactive PREP subfield set to 0
1694  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1695  *      supports the proactive PREQ with proactive PREP subfield set to 1
1696  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1697  *      the proactive RANN
1698  */
1699 enum ieee80211_root_mode_identifier {
1700         IEEE80211_ROOTMODE_NO_ROOT = 0,
1701         IEEE80211_ROOTMODE_ROOT = 1,
1702         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1703         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1704         IEEE80211_PROACTIVE_RANN = 4,
1705 };
1706
1707 /*
1708  * IEEE 802.11-2007 7.3.2.9 Country information element
1709  *
1710  * Minimum length is 8 octets, ie len must be evenly
1711  * divisible by 2
1712  */
1713
1714 /* Although the spec says 8 I'm seeing 6 in practice */
1715 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1716
1717 /* The Country String field of the element shall be 3 octets in length */
1718 #define IEEE80211_COUNTRY_STRING_LEN    3
1719
1720 /*
1721  * For regulatory extension stuff see IEEE 802.11-2007
1722  * Annex I (page 1141) and Annex J (page 1147). Also
1723  * review 7.3.2.9.
1724  *
1725  * When dot11RegulatoryClassesRequired is true and the
1726  * first_channel/reg_extension_id is >= 201 then the IE
1727  * compromises of the 'ext' struct represented below:
1728  *
1729  *  - Regulatory extension ID - when generating IE this just needs
1730  *    to be monotonically increasing for each triplet passed in
1731  *    the IE
1732  *  - Regulatory class - index into set of rules
1733  *  - Coverage class - index into air propagation time (Table 7-27),
1734  *    in microseconds, you can compute the air propagation time from
1735  *    the index by multiplying by 3, so index 10 yields a propagation
1736  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1737  *    yet. A value of 0 inicates air propagation of <= 1 us.
1738  *
1739  *  See also Table I.2 for Emission limit sets and table
1740  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1741  *  a reg_class to an emission limit set and behavior limit set.
1742  */
1743 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1744
1745 /*
1746  *  Channels numbers in the IE must be monotonically increasing
1747  *  if dot11RegulatoryClassesRequired is not true.
1748  *
1749  *  If dot11RegulatoryClassesRequired is true consecutive
1750  *  subband triplets following a regulatory triplet shall
1751  *  have monotonically increasing first_channel number fields.
1752  *
1753  *  Channel numbers shall not overlap.
1754  *
1755  *  Note that max_power is signed.
1756  */
1757 struct ieee80211_country_ie_triplet {
1758         union {
1759                 struct {
1760                         u8 first_channel;
1761                         u8 num_channels;
1762                         s8 max_power;
1763                 } __attribute__ ((packed)) chans;
1764                 struct {
1765                         u8 reg_extension_id;
1766                         u8 reg_class;
1767                         u8 coverage_class;
1768                 } __attribute__ ((packed)) ext;
1769         };
1770 } __attribute__ ((packed));
1771
1772 enum ieee80211_timeout_interval_type {
1773         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1774         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1775         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1776 };
1777
1778 /* BACK action code */
1779 enum ieee80211_back_actioncode {
1780         WLAN_ACTION_ADDBA_REQ = 0,
1781         WLAN_ACTION_ADDBA_RESP = 1,
1782         WLAN_ACTION_DELBA = 2,
1783 };
1784
1785 /* BACK (block-ack) parties */
1786 enum ieee80211_back_parties {
1787         WLAN_BACK_RECIPIENT = 0,
1788         WLAN_BACK_INITIATOR = 1,
1789 };
1790
1791 /* SA Query action */
1792 enum ieee80211_sa_query_action {
1793         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1794         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1795 };
1796
1797
1798 /* cipher suite selectors */
1799 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1800 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1801 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1802 /* reserved:                            0x000FAC03 */
1803 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1804 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1805 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1806 #define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
1807
1808 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1809
1810 /* AKM suite selectors */
1811 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1812 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1813 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1814 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1815
1816 #define WLAN_MAX_KEY_LEN                32
1817
1818 #define WLAN_PMKID_LEN                  16
1819
1820 #define WLAN_OUI_WFA                    0x506f9a
1821 #define WLAN_OUI_TYPE_WFA_P2P           9
1822 #define WLAN_OUI_MICROSOFT              0x0050f2
1823 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
1824 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
1825 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
1826
1827 /*
1828  * WMM/802.11e Tspec Element
1829  */
1830 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1831 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1832
1833 enum ieee80211_tspec_status_code {
1834         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1835         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1836 };
1837
1838 struct ieee80211_tspec_ie {
1839         u8 element_id;
1840         u8 len;
1841         u8 oui[3];
1842         u8 oui_type;
1843         u8 oui_subtype;
1844         u8 version;
1845         __le16 tsinfo;
1846         u8 tsinfo_resvd;
1847         __le16 nominal_msdu;
1848         __le16 max_msdu;
1849         __le32 min_service_int;
1850         __le32 max_service_int;
1851         __le32 inactivity_int;
1852         __le32 suspension_int;
1853         __le32 service_start_time;
1854         __le32 min_data_rate;
1855         __le32 mean_data_rate;
1856         __le32 peak_data_rate;
1857         __le32 max_burst_size;
1858         __le32 delay_bound;
1859         __le32 min_phy_rate;
1860         __le16 sba;
1861         __le16 medium_time;
1862 } __packed;
1863
1864 /**
1865  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1866  * @hdr: the frame
1867  *
1868  * The qos ctrl bytes come after the frame_control, duration, seq_num
1869  * and 3 or 4 addresses of length ETH_ALEN.
1870  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1871  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1872  */
1873 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1874 {
1875         if (ieee80211_has_a4(hdr->frame_control))
1876                 return (u8 *)hdr + 30;
1877         else
1878                 return (u8 *)hdr + 24;
1879 }
1880
1881 /**
1882  * ieee80211_get_SA - get pointer to SA
1883  * @hdr: the frame
1884  *
1885  * Given an 802.11 frame, this function returns the offset
1886  * to the source address (SA). It does not verify that the
1887  * header is long enough to contain the address, and the
1888  * header must be long enough to contain the frame control
1889  * field.
1890  */
1891 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1892 {
1893         if (ieee80211_has_a4(hdr->frame_control))
1894                 return hdr->addr4;
1895         if (ieee80211_has_fromds(hdr->frame_control))
1896                 return hdr->addr3;
1897         return hdr->addr2;
1898 }
1899
1900 /**
1901  * ieee80211_get_DA - get pointer to DA
1902  * @hdr: the frame
1903  *
1904  * Given an 802.11 frame, this function returns the offset
1905  * to the destination address (DA). It does not verify that
1906  * the header is long enough to contain the address, and the
1907  * header must be long enough to contain the frame control
1908  * field.
1909  */
1910 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1911 {
1912         if (ieee80211_has_tods(hdr->frame_control))
1913                 return hdr->addr3;
1914         else
1915                 return hdr->addr1;
1916 }
1917
1918 /**
1919  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1920  * @hdr: the frame (buffer must include at least the first octet of payload)
1921  */
1922 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1923 {
1924         if (ieee80211_is_disassoc(hdr->frame_control) ||
1925             ieee80211_is_deauth(hdr->frame_control))
1926                 return true;
1927
1928         if (ieee80211_is_action(hdr->frame_control)) {
1929                 u8 *category;
1930
1931                 /*
1932                  * Action frames, excluding Public Action frames, are Robust
1933                  * Management Frames. However, if we are looking at a Protected
1934                  * frame, skip the check since the data may be encrypted and
1935                  * the frame has already been found to be a Robust Management
1936                  * Frame (by the other end).
1937                  */
1938                 if (ieee80211_has_protected(hdr->frame_control))
1939                         return true;
1940                 category = ((u8 *) hdr) + 24;
1941                 return *category != WLAN_CATEGORY_PUBLIC &&
1942                         *category != WLAN_CATEGORY_HT &&
1943                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1944                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1945         }
1946
1947         return false;
1948 }
1949
1950 /**
1951  * ieee80211_is_public_action - check if frame is a public action frame
1952  * @hdr: the frame
1953  * @len: length of the frame
1954  */
1955 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1956                                               size_t len)
1957 {
1958         struct ieee80211_mgmt *mgmt = (void *)hdr;
1959
1960         if (len < IEEE80211_MIN_ACTION_SIZE)
1961                 return false;
1962         if (!ieee80211_is_action(hdr->frame_control))
1963                 return false;
1964         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1965 }
1966
1967 /**
1968  * ieee80211_dsss_chan_to_freq - get channel center frequency
1969  * @channel: the DSSS channel
1970  *
1971  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1972  * Ref IEEE 802.11-2007 section 15.6
1973  */
1974 static inline int ieee80211_dsss_chan_to_freq(int channel)
1975 {
1976         if ((channel > 0) && (channel < 14))
1977                 return 2407 + (channel * 5);
1978         else if (channel == 14)
1979                 return 2484;
1980         else
1981                 return -1;
1982 }
1983
1984 /**
1985  * ieee80211_freq_to_dsss_chan - get channel
1986  * @freq: the frequency
1987  *
1988  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1989  * Ref IEEE 802.11-2007 section 15.6
1990  *
1991  * This routine selects the channel with the closest center frequency.
1992  */
1993 static inline int ieee80211_freq_to_dsss_chan(int freq)
1994 {
1995         if ((freq >= 2410) && (freq < 2475))
1996                 return (freq - 2405) / 5;
1997         else if ((freq >= 2482) && (freq < 2487))
1998                 return 14;
1999         else
2000                 return -1;
2001 }
2002
2003 /**
2004  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2005  * @tu: the TUs
2006  */
2007 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2008 {
2009         return 1024 * tu;
2010 }
2011
2012 /**
2013  * ieee80211_check_tim - check if AID bit is set in TIM
2014  * @tim: the TIM IE
2015  * @tim_len: length of the TIM IE
2016  * @aid: the AID to look for
2017  */
2018 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2019                                        u8 tim_len, u16 aid)
2020 {
2021         u8 mask;
2022         u8 indexn0, indexn1, indexn2;
2023
2024         if (unlikely(!tim || tim_len < sizeof(*tim)))
2025                 return false;
2026
2027         aid &= 0x3fff;
2028         indexn0 = aid / 8;
2029         mask  = 1 << (aid & 7);
2030
2031         indexn1 = tim->bitmap_ctrl & 0xfe;
2032         indexn2 = tim_len + indexn1 - 4;
2033
2034         if (indexn0 < indexn1 || indexn0 > indexn2)
2035                 return false;
2036
2037         indexn0 -= indexn1;
2038
2039         return !!(tim->virtual_map[indexn0] & mask);
2040 }
2041
2042 #endif /* __LINUX_IEEE80211_H */