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
  48 #define IEEE80211_SCTL_FRAG             0x000F
  49 #define IEEE80211_SCTL_SEQ              0xFFF0
  50
  51 #define IEEE80211_FTYPE_MGMT            0x0000
  52 #define IEEE80211_FTYPE_CTL             0x0004
  53 #define IEEE80211_FTYPE_DATA            0x0008
  54
  55 /* management */
  56 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  57 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  58 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  59 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  60 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  61 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  62 #define IEEE80211_STYPE_BEACON          0x0080
  63 #define IEEE80211_STYPE_ATIM            0x0090
  64 #define IEEE80211_STYPE_DISASSOC        0x00A0
  65 #define IEEE80211_STYPE_AUTH            0x00B0
  66 #define IEEE80211_STYPE_DEAUTH          0x00C0
  67 #define IEEE80211_STYPE_ACTION          0x00D0
  68
  69 /* control */
  70 #define IEEE80211_STYPE_BACK_REQ        0x0080
  71 #define IEEE80211_STYPE_BACK            0x0090
  72 #define IEEE80211_STYPE_PSPOLL          0x00A0
  73 #define IEEE80211_STYPE_RTS             0x00B0
  74 #define IEEE80211_STYPE_CTS             0x00C0
  75 #define IEEE80211_STYPE_ACK             0x00D0
  76 #define IEEE80211_STYPE_CFEND           0x00E0
  77 #define IEEE80211_STYPE_CFENDACK        0x00F0
  78
  79 /* data */
  80 #define IEEE80211_STYPE_DATA                    0x0000
  81 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  82 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  83 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  84 #define IEEE80211_STYPE_NULLFUNC                0x0040
  85 #define IEEE80211_STYPE_CFACK                   0x0050
  86 #define IEEE80211_STYPE_CFPOLL                  0x0060
  87 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  88 #define IEEE80211_STYPE_QOS_DATA                0x0080
  89 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  90 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  91 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  92 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  93 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  94 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  95 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  96
  97
  98 /* miscellaneous IEEE 802.11 constants */
  99 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 100 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 101 #define IEEE80211_MAX_AID               2007
 102 #define IEEE80211_MAX_TIM_LEN           251
 103 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 104    6.2.1.1.2.
 105
 106    802.11e clarifies the figure in section 7.1.2. The frame body is
 107    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 108 #define IEEE80211_MAX_DATA_LEN          2304
 109 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 110 #define IEEE80211_MAX_FRAME_LEN         2352
 111
 112 #define IEEE80211_MAX_SSID_LEN          32
 113
 114 #define IEEE80211_MAX_MESH_ID_LEN       32
 115
 116 #define IEEE80211_QOS_CTL_LEN           2
 117 /* 1d tag mask */
 118 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 119 /* TID mask */
 120 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 121 /* EOSP */
 122 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 123 /* ACK policy */
 124 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 125 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 126 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 127 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 128 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 129 /* A-MSDU 802.11n */
 130 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 131 /* Mesh Control 802.11s */
 132 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 133
 134 /* U-APSD queue for WMM IEs sent by AP */
 135 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 136 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 137
 138 /* U-APSD queues for WMM IEs sent by STA */
 139 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 140 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 141 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 142 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 143 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 144
 145 /* U-APSD max SP length for WMM IEs sent by STA */
 146 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 147 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 148 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 149 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 150 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 151 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 152
 153 #define IEEE80211_HT_CTL_LEN            4
 154
 155 struct ieee80211_hdr {
 156         __le16 frame_control;
 157         __le16 duration_id;
 158         u8 addr1[6];
 159         u8 addr2[6];
 160         u8 addr3[6];
 161         __le16 seq_ctrl;
 162         u8 addr4[6];
 163 } __attribute__ ((packed));
 164
 165 struct ieee80211_hdr_3addr {
 166         __le16 frame_control;
 167         __le16 duration_id;
 168         u8 addr1[6];
 169         u8 addr2[6];
 170         u8 addr3[6];
 171         __le16 seq_ctrl;
 172 } __attribute__ ((packed));
 173
 174 struct ieee80211_qos_hdr {
 175         __le16 frame_control;
 176         __le16 duration_id;
 177         u8 addr1[6];
 178         u8 addr2[6];
 179         u8 addr3[6];
 180         __le16 seq_ctrl;
 181         __le16 qos_ctrl;
 182 } __attribute__ ((packed));
 183
 184 /**
 185  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 186  * @fc: frame control bytes in little-endian byteorder
 187  */
 188 static inline int ieee80211_has_tods(__le16 fc)
 189 {
 190         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 191 }
 192
 193 /**
 194  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 195  * @fc: frame control bytes in little-endian byteorder
 196  */
 197 static inline int ieee80211_has_fromds(__le16 fc)
 198 {
 199         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 200 }
 201
 202 /**
 203  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 204  * @fc: frame control bytes in little-endian byteorder
 205  */
 206 static inline int ieee80211_has_a4(__le16 fc)
 207 {
 208         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 209         return (fc & tmp) == tmp;
 210 }
 211
 212 /**
 213  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 214  * @fc: frame control bytes in little-endian byteorder
 215  */
 216 static inline int ieee80211_has_morefrags(__le16 fc)
 217 {
 218         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 219 }
 220
 221 /**
 222  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 223  * @fc: frame control bytes in little-endian byteorder
 224  */
 225 static inline int ieee80211_has_retry(__le16 fc)
 226 {
 227         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 228 }
 229
 230 /**
 231  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 232  * @fc: frame control bytes in little-endian byteorder
 233  */
 234 static inline int ieee80211_has_pm(__le16 fc)
 235 {
 236         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 237 }
 238
 239 /**
 240  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 241  * @fc: frame control bytes in little-endian byteorder
 242  */
 243 static inline int ieee80211_has_moredata(__le16 fc)
 244 {
 245         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 246 }
 247
 248 /**
 249  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 250  * @fc: frame control bytes in little-endian byteorder
 251  */
 252 static inline int ieee80211_has_protected(__le16 fc)
 253 {
 254         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 255 }
 256
 257 /**
 258  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 259  * @fc: frame control bytes in little-endian byteorder
 260  */
 261 static inline int ieee80211_has_order(__le16 fc)
 262 {
 263         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 264 }
 265
 266 /**
 267  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 268  * @fc: frame control bytes in little-endian byteorder
 269  */
 270 static inline int ieee80211_is_mgmt(__le16 fc)
 271 {
 272         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 273                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 274 }
 275
 276 /**
 277  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 278  * @fc: frame control bytes in little-endian byteorder
 279  */
 280 static inline int ieee80211_is_ctl(__le16 fc)
 281 {
 282         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 283                cpu_to_le16(IEEE80211_FTYPE_CTL);
 284 }
 285
 286 /**
 287  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 288  * @fc: frame control bytes in little-endian byteorder
 289  */
 290 static inline int ieee80211_is_data(__le16 fc)
 291 {
 292         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 293                cpu_to_le16(IEEE80211_FTYPE_DATA);
 294 }
 295
 296 /**
 297  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 298  * @fc: frame control bytes in little-endian byteorder
 299  */
 300 static inline int ieee80211_is_data_qos(__le16 fc)
 301 {
 302         /*
 303          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 304          * to check the one bit
 305          */
 306         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 307                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 308 }
 309
 310 /**
 311  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 312  * @fc: frame control bytes in little-endian byteorder
 313  */
 314 static inline int ieee80211_is_data_present(__le16 fc)
 315 {
 316         /*
 317          * mask with 0x40 and test that that bit is clear to only return true
 318          * for the data-containing substypes.
 319          */
 320         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 321                cpu_to_le16(IEEE80211_FTYPE_DATA);
 322 }
 323
 324 /**
 325  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 326  * @fc: frame control bytes in little-endian byteorder
 327  */
 328 static inline int ieee80211_is_assoc_req(__le16 fc)
 329 {
 330         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 331                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 332 }
 333
 334 /**
 335  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 336  * @fc: frame control bytes in little-endian byteorder
 337  */
 338 static inline int ieee80211_is_assoc_resp(__le16 fc)
 339 {
 340         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 341                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 342 }
 343
 344 /**
 345  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 346  * @fc: frame control bytes in little-endian byteorder
 347  */
 348 static inline int ieee80211_is_reassoc_req(__le16 fc)
 349 {
 350         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 351                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 352 }
 353
 354 /**
 355  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 356  * @fc: frame control bytes in little-endian byteorder
 357  */
 358 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 359 {
 360         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 361                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 362 }
 363
 364 /**
 365  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 366  * @fc: frame control bytes in little-endian byteorder
 367  */
 368 static inline int ieee80211_is_probe_req(__le16 fc)
 369 {
 370         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 371                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 372 }
 373
 374 /**
 375  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 376  * @fc: frame control bytes in little-endian byteorder
 377  */
 378 static inline int ieee80211_is_probe_resp(__le16 fc)
 379 {
 380         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 381                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 382 }
 383
 384 /**
 385  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 386  * @fc: frame control bytes in little-endian byteorder
 387  */
 388 static inline int ieee80211_is_beacon(__le16 fc)
 389 {
 390         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 391                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 392 }
 393
 394 /**
 395  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 396  * @fc: frame control bytes in little-endian byteorder
 397  */
 398 static inline int ieee80211_is_atim(__le16 fc)
 399 {
 400         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 401                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 402 }
 403
 404 /**
 405  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 406  * @fc: frame control bytes in little-endian byteorder
 407  */
 408 static inline int ieee80211_is_disassoc(__le16 fc)
 409 {
 410         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 411                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 412 }
 413
 414 /**
 415  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 416  * @fc: frame control bytes in little-endian byteorder
 417  */
 418 static inline int ieee80211_is_auth(__le16 fc)
 419 {
 420         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 421                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 422 }
 423
 424 /**
 425  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 426  * @fc: frame control bytes in little-endian byteorder
 427  */
 428 static inline int ieee80211_is_deauth(__le16 fc)
 429 {
 430         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 431                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 432 }
 433
 434 /**
 435  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 436  * @fc: frame control bytes in little-endian byteorder
 437  */
 438 static inline int ieee80211_is_action(__le16 fc)
 439 {
 440         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 441                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 442 }
 443
 444 /**
 445  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 446  * @fc: frame control bytes in little-endian byteorder
 447  */
 448 static inline int ieee80211_is_back_req(__le16 fc)
 449 {
 450         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 451                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 452 }
 453
 454 /**
 455  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 456  * @fc: frame control bytes in little-endian byteorder
 457  */
 458 static inline int ieee80211_is_back(__le16 fc)
 459 {
 460         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 461                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 462 }
 463
 464 /**
 465  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 466  * @fc: frame control bytes in little-endian byteorder
 467  */
 468 static inline int ieee80211_is_pspoll(__le16 fc)
 469 {
 470         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 471                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 472 }
 473
 474 /**
 475  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 476  * @fc: frame control bytes in little-endian byteorder
 477  */
 478 static inline int ieee80211_is_rts(__le16 fc)
 479 {
 480         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 481                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 482 }
 483
 484 /**
 485  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 486  * @fc: frame control bytes in little-endian byteorder
 487  */
 488 static inline int ieee80211_is_cts(__le16 fc)
 489 {
 490         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 491                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 492 }
 493
 494 /**
 495  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 496  * @fc: frame control bytes in little-endian byteorder
 497  */
 498 static inline int ieee80211_is_ack(__le16 fc)
 499 {
 500         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 501                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 502 }
 503
 504 /**
 505  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 506  * @fc: frame control bytes in little-endian byteorder
 507  */
 508 static inline int ieee80211_is_cfend(__le16 fc)
 509 {
 510         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 511                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 512 }
 513
 514 /**
 515  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 516  * @fc: frame control bytes in little-endian byteorder
 517  */
 518 static inline int ieee80211_is_cfendack(__le16 fc)
 519 {
 520         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 521                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 522 }
 523
 524 /**
 525  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 526  * @fc: frame control bytes in little-endian byteorder
 527  */
 528 static inline int ieee80211_is_nullfunc(__le16 fc)
 529 {
 530         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 531                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 532 }
 533
 534 /**
 535  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 536  * @fc: frame control bytes in little-endian byteorder
 537  */
 538 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 539 {
 540         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 541                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 542 }
 543
 544 static inline unsigned int ieee80211_hdrlen(__le16 fc)
 545 {
 546         unsigned int hdrlen = 24;
 547
 548         if (ieee80211_has_a4(fc))
 549                 hdrlen = 30;
 550
 551         if (ieee80211_is_data_qos(fc)) {
 552                 hdrlen += IEEE80211_QOS_CTL_LEN;
 553                 if (ieee80211_has_order(fc))
 554                         hdrlen += IEEE80211_HT_CTL_LEN;
 555         }
 556
 557         return hdrlen;
 558 }
 559
 560 /**
 561  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 562  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 563  */
 564 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 565 {
 566         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 567 }
 568
 569 struct ieee80211s_hdr {
 570         u8 flags;
 571         u8 ttl;
 572         __le32 seqnum;
 573         u8 eaddr1[6];
 574         u8 eaddr2[6];
 575 } __attribute__ ((packed));
 576
 577 /* Mesh flags */
 578 #define MESH_FLAGS_AE_A4        0x1
 579 #define MESH_FLAGS_AE_A5_A6     0x2
 580 #define MESH_FLAGS_AE           0x3
 581 #define MESH_FLAGS_PS_DEEP      0x4
 582
 583 /**
 584  * enum ieee80211_preq_flags - mesh PREQ element flags
 585  *
 586  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 587  */
 588 enum ieee80211_preq_flags {
 589         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 590 };
 591
 592 /**
 593  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 594  *
 595  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 596  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 597  */
 598 enum ieee80211_preq_target_flags {
 599         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 600         IEEE80211_PREQ_USN_FLAG = 1<<2,
 601 };
 602
 603 /**
 604  * struct ieee80211_quiet_ie
 605  *
 606  * This structure refers to "Quiet information element"
 607  */
 608 struct ieee80211_quiet_ie {
 609         u8 count;
 610         u8 period;
 611         __le16 duration;
 612         __le16 offset;
 613 } __attribute__ ((packed));
 614
 615 /**
 616  * struct ieee80211_msrment_ie
 617  *
 618  * This structure refers to "Measurement Request/Report information element"
 619  */
 620 struct ieee80211_msrment_ie {
 621         u8 token;
 622         u8 mode;
 623         u8 type;
 624         u8 request[0];
 625 } __attribute__ ((packed));
 626
 627 /**
 628  * struct ieee80211_channel_sw_ie
 629  *
 630  * This structure refers to "Channel Switch Announcement information element"
 631  */
 632 struct ieee80211_channel_sw_ie {
 633         u8 mode;
 634         u8 new_ch_num;
 635         u8 count;
 636 } __attribute__ ((packed));
 637
 638 /**
 639  * struct ieee80211_tim
 640  *
 641  * This structure refers to "Traffic Indication Map information element"
 642  */
 643 struct ieee80211_tim_ie {
 644         u8 dtim_count;
 645         u8 dtim_period;
 646         u8 bitmap_ctrl;
 647         /* variable size: 1 - 251 bytes */
 648         u8 virtual_map[1];
 649 } __attribute__ ((packed));
 650
 651 /**
 652  * struct ieee80211_meshconf_ie
 653  *
 654  * This structure refers to "Mesh Configuration information element"
 655  */
 656 struct ieee80211_meshconf_ie {
 657         u8 meshconf_psel;
 658         u8 meshconf_pmetric;
 659         u8 meshconf_congest;
 660         u8 meshconf_synch;
 661         u8 meshconf_auth;
 662         u8 meshconf_form;
 663         u8 meshconf_cap;
 664 } __attribute__ ((packed));
 665
 666 /**
 667  * struct ieee80211_rann_ie
 668  *
 669  * This structure refers to "Root Announcement information element"
 670  */
 671 struct ieee80211_rann_ie {
 672         u8 rann_flags;
 673         u8 rann_hopcount;
 674         u8 rann_ttl;
 675         u8 rann_addr[6];
 676         __le32 rann_seq;
 677         __le32 rann_interval;
 678         __le32 rann_metric;
 679 } __attribute__ ((packed));
 680
 681 enum ieee80211_rann_flags {
 682         RANN_FLAG_IS_GATE = 1 << 0,
 683 };
 684
 685 #define WLAN_SA_QUERY_TR_ID_LEN 2
 686
 687 struct ieee80211_mgmt {
 688         __le16 frame_control;
 689         __le16 duration;
 690         u8 da[6];
 691         u8 sa[6];
 692         u8 bssid[6];
 693         __le16 seq_ctrl;
 694         union {
 695                 struct {
 696                         __le16 auth_alg;
 697                         __le16 auth_transaction;
 698                         __le16 status_code;
 699                         /* possibly followed by Challenge text */
 700                         u8 variable[0];
 701                 } __attribute__ ((packed)) auth;
 702                 struct {
 703                         __le16 reason_code;
 704                 } __attribute__ ((packed)) deauth;
 705                 struct {
 706                         __le16 capab_info;
 707                         __le16 listen_interval;
 708                         /* followed by SSID and Supported rates */
 709                         u8 variable[0];
 710                 } __attribute__ ((packed)) assoc_req;
 711                 struct {
 712                         __le16 capab_info;
 713                         __le16 status_code;
 714                         __le16 aid;
 715                         /* followed by Supported rates */
 716                         u8 variable[0];
 717                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 718                 struct {
 719                         __le16 capab_info;
 720                         __le16 listen_interval;
 721                         u8 current_ap[6];
 722                         /* followed by SSID and Supported rates */
 723                         u8 variable[0];
 724                 } __attribute__ ((packed)) reassoc_req;
 725                 struct {
 726                         __le16 reason_code;
 727                 } __attribute__ ((packed)) disassoc;
 728                 struct {
 729                         __le64 timestamp;
 730                         __le16 beacon_int;
 731                         __le16 capab_info;
 732                         /* followed by some of SSID, Supported rates,
 733                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 734                         u8 variable[0];
 735                 } __attribute__ ((packed)) beacon;
 736                 struct {
 737                         /* only variable items: SSID, Supported rates */
 738                         u8 variable[0];
 739                 } __attribute__ ((packed)) probe_req;
 740                 struct {
 741                         __le64 timestamp;
 742                         __le16 beacon_int;
 743                         __le16 capab_info;
 744                         /* followed by some of SSID, Supported rates,
 745                          * FH Params, DS Params, CF Params, IBSS Params */
 746                         u8 variable[0];
 747                 } __attribute__ ((packed)) probe_resp;
 748                 struct {
 749                         u8 category;
 750                         union {
 751                                 struct {
 752                                         u8 action_code;
 753                                         u8 dialog_token;
 754                                         u8 status_code;
 755                                         u8 variable[0];
 756                                 } __attribute__ ((packed)) wme_action;
 757                                 struct{
 758                                         u8 action_code;
 759                                         u8 element_id;
 760                                         u8 length;
 761                                         struct ieee80211_channel_sw_ie sw_elem;
 762                                 } __attribute__((packed)) chan_switch;
 763                                 struct{
 764                                         u8 action_code;
 765                                         u8 dialog_token;
 766                                         u8 element_id;
 767                                         u8 length;
 768                                         struct ieee80211_msrment_ie msr_elem;
 769                                 } __attribute__((packed)) measurement;
 770                                 struct{
 771                                         u8 action_code;
 772                                         u8 dialog_token;
 773                                         __le16 capab;
 774                                         __le16 timeout;
 775                                         __le16 start_seq_num;
 776                                 } __attribute__((packed)) addba_req;
 777                                 struct{
 778                                         u8 action_code;
 779                                         u8 dialog_token;
 780                                         __le16 status;
 781                                         __le16 capab;
 782                                         __le16 timeout;
 783                                 } __attribute__((packed)) addba_resp;
 784                                 struct{
 785                                         u8 action_code;
 786                                         __le16 params;
 787                                         __le16 reason_code;
 788                                 } __attribute__((packed)) delba;
 789                                 struct {
 790                                         u8 action_code;
 791                                         u8 variable[0];
 792                                 } __attribute__((packed)) self_prot;
 793                                 struct{
 794                                         u8 action_code;
 795                                         u8 variable[0];
 796                                 } __attribute__((packed)) mesh_action;
 797                                 struct {
 798                                         u8 action;
 799                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 800                                 } __attribute__ ((packed)) sa_query;
 801                                 struct {
 802                                         u8 action;
 803                                         u8 smps_control;
 804                                 } __attribute__ ((packed)) ht_smps;
 805                                 struct {
 806                                         u8 action_code;
 807                                         u8 dialog_token;
 808                                         __le16 capability;
 809                                         u8 variable[0];
 810                                 } __packed tdls_discover_resp;
 811                         } u;
 812                 } __attribute__ ((packed)) action;
 813         } u;
 814 } __attribute__ ((packed));
 815
 816 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 817 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 818
 819 /* mgmt header + 1 byte category code */
 820 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 821
 822
 823 /* Management MIC information element (IEEE 802.11w) */
 824 struct ieee80211_mmie {
 825         u8 element_id;
 826         u8 length;
 827         __le16 key_id;
 828         u8 sequence_number[6];
 829         u8 mic[8];
 830 } __attribute__ ((packed));
 831
 832 struct ieee80211_vendor_ie {
 833         u8 element_id;
 834         u8 len;
 835         u8 oui[3];
 836         u8 oui_type;
 837 } __packed;
 838
 839 /* Control frames */
 840 struct ieee80211_rts {
 841         __le16 frame_control;
 842         __le16 duration;
 843         u8 ra[6];
 844         u8 ta[6];
 845 } __attribute__ ((packed));
 846
 847 struct ieee80211_cts {
 848         __le16 frame_control;
 849         __le16 duration;
 850         u8 ra[6];
 851 } __attribute__ ((packed));
 852
 853 struct ieee80211_pspoll {
 854         __le16 frame_control;
 855         __le16 aid;
 856         u8 bssid[6];
 857         u8 ta[6];
 858 } __attribute__ ((packed));
 859
 860 /* TDLS */
 861
 862 /* Link-id information element */
 863 struct ieee80211_tdls_lnkie {
 864         u8 ie_type; /* Link Identifier IE */
 865         u8 ie_len;
 866         u8 bssid[6];
 867         u8 init_sta[6];
 868         u8 resp_sta[6];
 869 } __packed;
 870
 871 struct ieee80211_tdls_data {
 872         u8 da[6];
 873         u8 sa[6];
 874         __be16 ether_type;
 875         u8 payload_type;
 876         u8 category;
 877         u8 action_code;
 878         union {
 879                 struct {
 880                         u8 dialog_token;
 881                         __le16 capability;
 882                         u8 variable[0];
 883                 } __packed setup_req;
 884                 struct {
 885                         __le16 status_code;
 886                         u8 dialog_token;
 887                         __le16 capability;
 888                         u8 variable[0];
 889                 } __packed setup_resp;
 890                 struct {
 891                         __le16 status_code;
 892                         u8 dialog_token;
 893                         u8 variable[0];
 894                 } __packed setup_cfm;
 895                 struct {
 896                         __le16 reason_code;
 897                         u8 variable[0];
 898                 } __packed teardown;
 899                 struct {
 900                         u8 dialog_token;
 901                         u8 variable[0];
 902                 } __packed discover_req;
 903         } u;
 904 } __packed;
 905
 906 /**
 907  * struct ieee80211_bar - HT Block Ack Request
 908  *
 909  * This structure refers to "HT BlockAckReq" as
 910  * described in 802.11n draft section 7.2.1.7.1
 911  */
 912 struct ieee80211_bar {
 913         __le16 frame_control;
 914         __le16 duration;
 915         __u8 ra[6];
 916         __u8 ta[6];
 917         __le16 control;
 918         __le16 start_seq_num;
 919 } __attribute__((packed)) __aligned(4);
 920
 921 /* 802.11 BA(R) control masks */
 922 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 923 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 924 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 925 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 926 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 927
 928 /**
 929  * struct ieee80211_ba - HT Block Ack
 930  *
 931  * This structure refers to "HT BlockAck" as
 932  * described in 802.11n draft section 7.2.1.8.1
 933  */
 934 struct ieee80211_ba {
 935         __le16 frame_control;
 936         __le16 duration;
 937         u8 ra[6];
 938         u8 ta[6];
 939         __le16 control;
 940
 941         __le16 start_seq_num;
 942         u8 bitmap[8];
 943 } __attribute__((packed));
 944
 945 #define IEEE80211_HT_MCS_MASK_LEN               10
 946
 947 /**
 948  * struct ieee80211_mcs_info - MCS information
 949  * @rx_mask: RX mask
 950  * @rx_highest: highest supported RX rate. If set represents
 951  *      the highest supported RX data rate in units of 1 Mbps.
 952  *      If this field is 0 this value should not be used to
 953  *      consider the highest RX data rate supported.
 954  * @tx_params: TX parameters
 955  */
 956 struct ieee80211_mcs_info {
 957         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 958         __le16 rx_highest;
 959         u8 tx_params;
 960         u8 reserved[3];
 961 } __attribute__((packed));
 962
 963 /* 802.11n HT capability MSC set */
 964 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 965 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 966 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 967 /* value 0 == 1 stream etc */
 968 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 969 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 970 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 971 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 972
 973 /*
 974  * 802.11n D5.0 20.3.5 / 20.6 says:
 975  * - indices 0 to 7 and 32 are single spatial stream
 976  * - 8 to 31 are multiple spatial streams using equal modulation
 977  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 978  * - remainder are multiple spatial streams using unequal modulation
 979  */
 980 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 981 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 982         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 983
 984 /**
 985  * struct ieee80211_ht_cap - HT capabilities
 986  *
 987  * This structure is the "HT capabilities element" as
 988  * described in 802.11n D5.0 7.3.2.57
 989  */
 990 struct ieee80211_ht_cap {
 991         __le16 cap_info;
 992         u8 ampdu_params_info;
 993
 994         /* 16 bytes MCS information */
 995         struct ieee80211_mcs_info mcs;
 996
 997         __le16 extended_ht_cap_info;
 998         __le32 tx_BF_cap_info;
 999         u8 antenna_selection_info;
1000 } __attribute__ ((packed));
1001
1002 /* 802.11n HT capabilities masks (for cap_info) */
1003 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1004 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1005 #define IEEE80211_HT_CAP_SM_PS                  0x000C
1006 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1007 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
1008 #define IEEE80211_HT_CAP_SGI_20                 0x0020
1009 #define IEEE80211_HT_CAP_SGI_40                 0x0040
1010 #define IEEE80211_HT_CAP_TX_STBC                0x0080
1011 #define IEEE80211_HT_CAP_RX_STBC                0x0300
1012 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1013 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
1014 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1015 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1016 #define IEEE80211_HT_CAP_RESERVED               0x2000
1017 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1018 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1019
1020 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1021 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1022 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1023 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1024 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1025 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1026 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1027 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1028
1029 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1030 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1031 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1032 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1033
1034 /*
1035  * Maximum length of AMPDU that the STA can receive.
1036  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1037  */
1038 enum ieee80211_max_ampdu_length_exp {
1039         IEEE80211_HT_MAX_AMPDU_8K = 0,
1040         IEEE80211_HT_MAX_AMPDU_16K = 1,
1041         IEEE80211_HT_MAX_AMPDU_32K = 2,
1042         IEEE80211_HT_MAX_AMPDU_64K = 3
1043 };
1044
1045 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1046
1047 /* Minimum MPDU start spacing */
1048 enum ieee80211_min_mpdu_spacing {
1049         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1050         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1051         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1052         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1053         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1054         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1055         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1056         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1057 };
1058
1059 /**
1060  * struct ieee80211_ht_operation - HT operation IE
1061  *
1062  * This structure is the "HT operation element" as
1063  * described in 802.11n-2009 7.3.2.57
1064  */
1065 struct ieee80211_ht_operation {
1066         u8 primary_chan;
1067         u8 ht_param;
1068         __le16 operation_mode;
1069         __le16 stbc_param;
1070         u8 basic_set[16];
1071 } __attribute__ ((packed));
1072
1073 /* for ht_param */
1074 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1075 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1076 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1077 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1078 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1079 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1080
1081 /* for operation_mode */
1082 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1083 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1084 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1085 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1086 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1087 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1088 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1089
1090 /* for stbc_param */
1091 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1092 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1093 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1094 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1095 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1096 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1097
1098
1099 /* block-ack parameters */
1100 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1101 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1102 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1103 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1104 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1105
1106 /*
1107  * A-PMDU buffer sizes
1108  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1109  */
1110 #define IEEE80211_MIN_AMPDU_BUF 0x8
1111 #define IEEE80211_MAX_AMPDU_BUF 0x40
1112
1113
1114 /* Spatial Multiplexing Power Save Modes (for capability) */
1115 #define WLAN_HT_CAP_SM_PS_STATIC        0
1116 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1117 #define WLAN_HT_CAP_SM_PS_INVALID       2
1118 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1119
1120 /* for SM power control field lower two bits */
1121 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1122 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1123 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1124
1125 #define VHT_MCS_SUPPORTED_SET_SIZE      8
1126
1127 struct ieee80211_vht_capabilities {
1128         __le32 vht_capabilities_info;
1129         u8 vht_supported_mcs_set[VHT_MCS_SUPPORTED_SET_SIZE];
1130 } __packed;
1131
1132 struct ieee80211_vht_operation {
1133         u8 vht_op_info_chwidth;
1134         u8 vht_op_info_chan_center_freq_seg1_idx;
1135         u8 vht_op_info_chan_center_freq_seg2_idx;
1136         __le16 vht_basic_mcs_set;
1137 } __packed;
1138
1139 /**
1140  * struct ieee80211_vht_mcs_info - VHT MCS information
1141  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1142  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1143  *      STA can receive. Rate expressed in units of 1 Mbps.
1144  *      If this field is 0 this value should not be used to
1145  *      consider the highest RX data rate supported.
1146  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1147  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1148  *      STA can transmit. Rate expressed in units of 1 Mbps.
1149  *      If this field is 0 this value should not be used to
1150  *      consider the highest TX data rate supported.
1151  */
1152 struct ieee80211_vht_mcs_info {
1153         __le16 rx_mcs_map;
1154         __le16 rx_highest;
1155         __le16 tx_mcs_map;
1156         __le16 tx_highest;
1157 } __packed;
1158
1159 #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1160 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1161 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT  2
1162 #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1163
1164 /* 802.11ac VHT Capabilities */
1165 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                0x00000000
1166 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                0x00000001
1167 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454               0x00000002
1168 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ              0x00000004
1169 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ     0x00000008
1170 #define IEEE80211_VHT_CAP_RXLDPC                              0x00000010
1171 #define IEEE80211_VHT_CAP_SHORT_GI_80                         0x00000020
1172 #define IEEE80211_VHT_CAP_SHORT_GI_160                        0x00000040
1173 #define IEEE80211_VHT_CAP_TXSTBC                              0x00000080
1174 #define IEEE80211_VHT_CAP_RXSTBC_1                            0x00000100
1175 #define IEEE80211_VHT_CAP_RXSTBC_2                            0x00000200
1176 #define IEEE80211_VHT_CAP_RXSTBC_3                            0x00000300
1177 #define IEEE80211_VHT_CAP_RXSTBC_4                            0x00000400
1178 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE               0x00000800
1179 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE               0x00001000
1180 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX             0x00006000
1181 #define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX              0x00030000
1182 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE               0x00080000
1183 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE               0x00100000
1184 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                         0x00200000
1185 #define IEEE80211_VHT_CAP_HTC_VHT                             0x00400000
1186 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT          0x00800000
1187 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB   0x08000000
1188 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB     0x0c000000
1189 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                  0x10000000
1190 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                  0x20000000
1191
1192 /* Authentication algorithms */
1193 #define WLAN_AUTH_OPEN 0
1194 #define WLAN_AUTH_SHARED_KEY 1
1195 #define WLAN_AUTH_FT 2
1196 #define WLAN_AUTH_SAE 3
1197 #define WLAN_AUTH_LEAP 128
1198
1199 #define WLAN_AUTH_CHALLENGE_LEN 128
1200
1201 #define WLAN_CAPABILITY_ESS             (1<<0)
1202 #define WLAN_CAPABILITY_IBSS            (1<<1)
1203
1204 /*
1205  * A mesh STA sets the ESS and IBSS capability bits to zero.
1206  * however, this holds true for p2p probe responses (in the p2p_find
1207  * phase) as well.
1208  */
1209 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1210         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1211
1212 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1213 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1214 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1215 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1216 #define WLAN_CAPABILITY_PBCC            (1<<6)
1217 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1218
1219 /* 802.11h */
1220 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1221 #define WLAN_CAPABILITY_QOS             (1<<9)
1222 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1223 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1224 /* measurement */
1225 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1226 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1227 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1228
1229 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1230 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1231 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1232
1233
1234 /* 802.11g ERP information element */
1235 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1236 #define WLAN_ERP_USE_PROTECTION (1<<1)
1237 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1238
1239 /* WLAN_ERP_BARKER_PREAMBLE values */
1240 enum {
1241         WLAN_ERP_PREAMBLE_SHORT = 0,
1242         WLAN_ERP_PREAMBLE_LONG = 1,
1243 };
1244
1245 /* Status codes */
1246 enum ieee80211_statuscode {
1247         WLAN_STATUS_SUCCESS = 0,
1248         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1249         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1250         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1251         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1252         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1253         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1254         WLAN_STATUS_CHALLENGE_FAIL = 15,
1255         WLAN_STATUS_AUTH_TIMEOUT = 16,
1256         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1257         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1258         /* 802.11b */
1259         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1260         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1261         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1262         /* 802.11h */
1263         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1264         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1265         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1266         /* 802.11g */
1267         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1268         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1269         /* 802.11w */
1270         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1271         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1272         /* 802.11i */
1273         WLAN_STATUS_INVALID_IE = 40,
1274         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1275         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1276         WLAN_STATUS_INVALID_AKMP = 43,
1277         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1278         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1279         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1280         /* 802.11e */
1281         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1282         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1283         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1284         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1285         WLAN_STATUS_REQUEST_DECLINED = 37,
1286         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1287         WLAN_STATUS_CHANGE_TSPEC = 39,
1288         WLAN_STATUS_WAIT_TS_DELAY = 47,
1289         WLAN_STATUS_NO_DIRECT_LINK = 48,
1290         WLAN_STATUS_STA_NOT_PRESENT = 49,
1291         WLAN_STATUS_STA_NOT_QSTA = 50,
1292         /* 802.11s */
1293         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1294         WLAN_STATUS_FCG_NOT_SUPP = 78,
1295         WLAN_STATUS_STA_NO_TBTT = 78,
1296 };
1297
1298
1299 /* Reason codes */
1300 enum ieee80211_reasoncode {
1301         WLAN_REASON_UNSPECIFIED = 1,
1302         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1303         WLAN_REASON_DEAUTH_LEAVING = 3,
1304         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1305         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1306         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1307         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1308         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1309         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1310         /* 802.11h */
1311         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1312         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1313         /* 802.11i */
1314         WLAN_REASON_INVALID_IE = 13,
1315         WLAN_REASON_MIC_FAILURE = 14,
1316         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1317         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1318         WLAN_REASON_IE_DIFFERENT = 17,
1319         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1320         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1321         WLAN_REASON_INVALID_AKMP = 20,
1322         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1323         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1324         WLAN_REASON_IEEE8021X_FAILED = 23,
1325         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1326         /* 802.11e */
1327         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1328         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1329         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1330         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1331         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1332         WLAN_REASON_QSTA_NOT_USE = 37,
1333         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1334         WLAN_REASON_QSTA_TIMEOUT = 39,
1335         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1336         /* 802.11s */
1337         WLAN_REASON_MESH_PEER_CANCELED = 52,
1338         WLAN_REASON_MESH_MAX_PEERS = 53,
1339         WLAN_REASON_MESH_CONFIG = 54,
1340         WLAN_REASON_MESH_CLOSE = 55,
1341         WLAN_REASON_MESH_MAX_RETRIES = 56,
1342         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1343         WLAN_REASON_MESH_INVALID_GTK = 58,
1344         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1345         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1346         WLAN_REASON_MESH_PATH_ERROR = 61,
1347         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1348         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1349         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1350         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1351         WLAN_REASON_MESH_CHAN = 66,
1352 };
1353
1354
1355 /* Information Element IDs */
1356 enum ieee80211_eid {
1357         WLAN_EID_SSID = 0,
1358         WLAN_EID_SUPP_RATES = 1,
1359         WLAN_EID_FH_PARAMS = 2,
1360         WLAN_EID_DS_PARAMS = 3,
1361         WLAN_EID_CF_PARAMS = 4,
1362         WLAN_EID_TIM = 5,
1363         WLAN_EID_IBSS_PARAMS = 6,
1364         WLAN_EID_CHALLENGE = 16,
1365
1366         WLAN_EID_COUNTRY = 7,
1367         WLAN_EID_HP_PARAMS = 8,
1368         WLAN_EID_HP_TABLE = 9,
1369         WLAN_EID_REQUEST = 10,
1370
1371         WLAN_EID_QBSS_LOAD = 11,
1372         WLAN_EID_EDCA_PARAM_SET = 12,
1373         WLAN_EID_TSPEC = 13,
1374         WLAN_EID_TCLAS = 14,
1375         WLAN_EID_SCHEDULE = 15,
1376         WLAN_EID_TS_DELAY = 43,
1377         WLAN_EID_TCLAS_PROCESSING = 44,
1378         WLAN_EID_QOS_CAPA = 46,
1379         /* 802.11z */
1380         WLAN_EID_LINK_ID = 101,
1381         /* 802.11s */
1382         WLAN_EID_MESH_CONFIG = 113,
1383         WLAN_EID_MESH_ID = 114,
1384         WLAN_EID_LINK_METRIC_REPORT = 115,
1385         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1386         WLAN_EID_PEER_MGMT = 117,
1387         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1388         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1389         WLAN_EID_BEACON_TIMING = 120,
1390         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1391         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1392         WLAN_EID_MCCAOP_ADVERT = 123,
1393         WLAN_EID_MCCAOP_TEARDOWN = 124,
1394         WLAN_EID_GANN = 125,
1395         WLAN_EID_RANN = 126,
1396         WLAN_EID_PREQ = 130,
1397         WLAN_EID_PREP = 131,
1398         WLAN_EID_PERR = 132,
1399         WLAN_EID_PXU = 137,
1400         WLAN_EID_PXUC = 138,
1401         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1402         WLAN_EID_MIC = 140,
1403
1404         WLAN_EID_PWR_CONSTRAINT = 32,
1405         WLAN_EID_PWR_CAPABILITY = 33,
1406         WLAN_EID_TPC_REQUEST = 34,
1407         WLAN_EID_TPC_REPORT = 35,
1408         WLAN_EID_SUPPORTED_CHANNELS = 36,
1409         WLAN_EID_CHANNEL_SWITCH = 37,
1410         WLAN_EID_MEASURE_REQUEST = 38,
1411         WLAN_EID_MEASURE_REPORT = 39,
1412         WLAN_EID_QUIET = 40,
1413         WLAN_EID_IBSS_DFS = 41,
1414
1415         WLAN_EID_ERP_INFO = 42,
1416         WLAN_EID_EXT_SUPP_RATES = 50,
1417
1418         WLAN_EID_HT_CAPABILITY = 45,
1419         WLAN_EID_HT_OPERATION = 61,
1420
1421         WLAN_EID_RSN = 48,
1422         WLAN_EID_MMIE = 76,
1423         WLAN_EID_WPA = 221,
1424         WLAN_EID_GENERIC = 221,
1425         WLAN_EID_VENDOR_SPECIFIC = 221,
1426         WLAN_EID_QOS_PARAMETER = 222,
1427
1428         WLAN_EID_AP_CHAN_REPORT = 51,
1429         WLAN_EID_NEIGHBOR_REPORT = 52,
1430         WLAN_EID_RCPI = 53,
1431         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1432         WLAN_EID_ANTENNA_INFO = 64,
1433         WLAN_EID_RSNI = 65,
1434         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1435         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1436         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1437         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1438         WLAN_EID_MULTIPLE_BSSID = 71,
1439         WLAN_EID_BSS_COEX_2040 = 72,
1440         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1441         WLAN_EID_EXT_CAPABILITY = 127,
1442
1443         WLAN_EID_MOBILITY_DOMAIN = 54,
1444         WLAN_EID_FAST_BSS_TRANSITION = 55,
1445         WLAN_EID_TIMEOUT_INTERVAL = 56,
1446         WLAN_EID_RIC_DATA = 57,
1447         WLAN_EID_RIC_DESCRIPTOR = 75,
1448
1449         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1450         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1451         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1452
1453         WLAN_EID_VHT_CAPABILITY = 191,
1454         WLAN_EID_VHT_OPERATION = 192,
1455 };
1456
1457 /* Action category code */
1458 enum ieee80211_category {
1459         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1460         WLAN_CATEGORY_QOS = 1,
1461         WLAN_CATEGORY_DLS = 2,
1462         WLAN_CATEGORY_BACK = 3,
1463         WLAN_CATEGORY_PUBLIC = 4,
1464         WLAN_CATEGORY_HT = 7,
1465         WLAN_CATEGORY_SA_QUERY = 8,
1466         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1467         WLAN_CATEGORY_TDLS = 12,
1468         WLAN_CATEGORY_MESH_ACTION = 13,
1469         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1470         WLAN_CATEGORY_SELF_PROTECTED = 15,
1471         WLAN_CATEGORY_WMM = 17,
1472         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1473         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1474 };
1475
1476 /* SPECTRUM_MGMT action code */
1477 enum ieee80211_spectrum_mgmt_actioncode {
1478         WLAN_ACTION_SPCT_MSR_REQ = 0,
1479         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1480         WLAN_ACTION_SPCT_TPC_REQ = 2,
1481         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1482         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1483 };
1484
1485 /* HT action codes */
1486 enum ieee80211_ht_actioncode {
1487         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1488         WLAN_HT_ACTION_SMPS = 1,
1489         WLAN_HT_ACTION_PSMP = 2,
1490         WLAN_HT_ACTION_PCO_PHASE = 3,
1491         WLAN_HT_ACTION_CSI = 4,
1492         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1493         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1494         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1495 };
1496
1497 /* Self Protected Action codes */
1498 enum ieee80211_self_protected_actioncode {
1499         WLAN_SP_RESERVED = 0,
1500         WLAN_SP_MESH_PEERING_OPEN = 1,
1501         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1502         WLAN_SP_MESH_PEERING_CLOSE = 3,
1503         WLAN_SP_MGK_INFORM = 4,
1504         WLAN_SP_MGK_ACK = 5,
1505 };
1506
1507 /* Mesh action codes */
1508 enum ieee80211_mesh_actioncode {
1509         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1510         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1511         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1512         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1513         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1514         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1515         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1516         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1517         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1518         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1519         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1520 };
1521
1522 /* Security key length */
1523 enum ieee80211_key_len {
1524         WLAN_KEY_LEN_WEP40 = 5,
1525         WLAN_KEY_LEN_WEP104 = 13,
1526         WLAN_KEY_LEN_CCMP = 16,
1527         WLAN_KEY_LEN_TKIP = 32,
1528         WLAN_KEY_LEN_AES_CMAC = 16,
1529 };
1530
1531 /* Public action codes */
1532 enum ieee80211_pub_actioncode {
1533         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1534 };
1535
1536 /* TDLS action codes */
1537 enum ieee80211_tdls_actioncode {
1538         WLAN_TDLS_SETUP_REQUEST = 0,
1539         WLAN_TDLS_SETUP_RESPONSE = 1,
1540         WLAN_TDLS_SETUP_CONFIRM = 2,
1541         WLAN_TDLS_TEARDOWN = 3,
1542         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1543         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1544         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1545         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1546         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1547         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1548         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1549 };
1550
1551 /*
1552  * TDLS capabililites to be enabled in the 5th byte of the
1553  * @WLAN_EID_EXT_CAPABILITY information element
1554  */
1555 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1556 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1557
1558 /* TDLS specific payload type in the LLC/SNAP header */
1559 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1560
1561 /**
1562  * enum - mesh synchronization method identifier
1563  *
1564  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1565  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1566  *      that will be specified in a vendor specific information element
1567  */
1568 enum {
1569         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1570         IEEE80211_SYNC_METHOD_VENDOR = 255,
1571 };
1572
1573 /**
1574  * enum - mesh path selection protocol identifier
1575  *
1576  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1577  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1578  *      be specified in a vendor specific information element
1579  */
1580 enum {
1581         IEEE80211_PATH_PROTOCOL_HWMP = 1,
1582         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1583 };
1584
1585 /**
1586  * enum - mesh path selection metric identifier
1587  *
1588  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1589  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1590  *      specified in a vendor specific information element
1591  */
1592 enum {
1593         IEEE80211_PATH_METRIC_AIRTIME = 1,
1594         IEEE80211_PATH_METRIC_VENDOR = 255,
1595 };
1596
1597 /**
1598  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1599  *
1600  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1601  *
1602  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1603  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1604  *      this value
1605  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1606  *      the proactive PREQ with proactive PREP subfield set to 0
1607  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1608  *      supports the proactive PREQ with proactive PREP subfield set to 1
1609  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1610  *      the proactive RANN
1611  */
1612 enum ieee80211_root_mode_identifier {
1613         IEEE80211_ROOTMODE_NO_ROOT = 0,
1614         IEEE80211_ROOTMODE_ROOT = 1,
1615         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1616         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1617         IEEE80211_PROACTIVE_RANN = 4,
1618 };
1619
1620 /*
1621  * IEEE 802.11-2007 7.3.2.9 Country information element
1622  *
1623  * Minimum length is 8 octets, ie len must be evenly
1624  * divisible by 2
1625  */
1626
1627 /* Although the spec says 8 I'm seeing 6 in practice */
1628 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1629
1630 /* The Country String field of the element shall be 3 octets in length */
1631 #define IEEE80211_COUNTRY_STRING_LEN    3
1632
1633 /*
1634  * For regulatory extension stuff see IEEE 802.11-2007
1635  * Annex I (page 1141) and Annex J (page 1147). Also
1636  * review 7.3.2.9.
1637  *
1638  * When dot11RegulatoryClassesRequired is true and the
1639  * first_channel/reg_extension_id is >= 201 then the IE
1640  * compromises of the 'ext' struct represented below:
1641  *
1642  *  - Regulatory extension ID - when generating IE this just needs
1643  *    to be monotonically increasing for each triplet passed in
1644  *    the IE
1645  *  - Regulatory class - index into set of rules
1646  *  - Coverage class - index into air propagation time (Table 7-27),
1647  *    in microseconds, you can compute the air propagation time from
1648  *    the index by multiplying by 3, so index 10 yields a propagation
1649  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1650  *    yet. A value of 0 inicates air propagation of <= 1 us.
1651  *
1652  *  See also Table I.2 for Emission limit sets and table
1653  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1654  *  a reg_class to an emission limit set and behavior limit set.
1655  */
1656 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1657
1658 /*
1659  *  Channels numbers in the IE must be monotonically increasing
1660  *  if dot11RegulatoryClassesRequired is not true.
1661  *
1662  *  If dot11RegulatoryClassesRequired is true consecutive
1663  *  subband triplets following a regulatory triplet shall
1664  *  have monotonically increasing first_channel number fields.
1665  *
1666  *  Channel numbers shall not overlap.
1667  *
1668  *  Note that max_power is signed.
1669  */
1670 struct ieee80211_country_ie_triplet {
1671         union {
1672                 struct {
1673                         u8 first_channel;
1674                         u8 num_channels;
1675                         s8 max_power;
1676                 } __attribute__ ((packed)) chans;
1677                 struct {
1678                         u8 reg_extension_id;
1679                         u8 reg_class;
1680                         u8 coverage_class;
1681                 } __attribute__ ((packed)) ext;
1682         };
1683 } __attribute__ ((packed));
1684
1685 enum ieee80211_timeout_interval_type {
1686         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1687         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1688         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1689 };
1690
1691 /* BACK action code */
1692 enum ieee80211_back_actioncode {
1693         WLAN_ACTION_ADDBA_REQ = 0,
1694         WLAN_ACTION_ADDBA_RESP = 1,
1695         WLAN_ACTION_DELBA = 2,
1696 };
1697
1698 /* BACK (block-ack) parties */
1699 enum ieee80211_back_parties {
1700         WLAN_BACK_RECIPIENT = 0,
1701         WLAN_BACK_INITIATOR = 1,
1702 };
1703
1704 /* SA Query action */
1705 enum ieee80211_sa_query_action {
1706         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1707         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1708 };
1709
1710
1711 /* cipher suite selectors */
1712 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1713 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1714 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1715 /* reserved:                            0x000FAC03 */
1716 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1717 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1718 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1719
1720 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1721
1722 /* AKM suite selectors */
1723 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1724 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1725 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1726 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1727
1728 #define WLAN_MAX_KEY_LEN                32
1729
1730 #define WLAN_PMKID_LEN                  16
1731
1732 #define WLAN_OUI_WFA                    0x506f9a
1733 #define WLAN_OUI_TYPE_WFA_P2P           9
1734 #define WLAN_OUI_MICROSOFT              0x0050f2
1735 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
1736 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
1737 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
1738
1739 /*
1740  * WMM/802.11e Tspec Element
1741  */
1742 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1743 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1744
1745 enum ieee80211_tspec_status_code {
1746         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1747         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1748 };
1749
1750 struct ieee80211_tspec_ie {
1751         u8 element_id;
1752         u8 len;
1753         u8 oui[3];
1754         u8 oui_type;
1755         u8 oui_subtype;
1756         u8 version;
1757         __le16 tsinfo;
1758         u8 tsinfo_resvd;
1759         __le16 nominal_msdu;
1760         __le16 max_msdu;
1761         __le32 min_service_int;
1762         __le32 max_service_int;
1763         __le32 inactivity_int;
1764         __le32 suspension_int;
1765         __le32 service_start_time;
1766         __le32 min_data_rate;
1767         __le32 mean_data_rate;
1768         __le32 peak_data_rate;
1769         __le32 max_burst_size;
1770         __le32 delay_bound;
1771         __le32 min_phy_rate;
1772         __le16 sba;
1773         __le16 medium_time;
1774 } __packed;
1775
1776 /**
1777  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1778  * @hdr: the frame
1779  *
1780  * The qos ctrl bytes come after the frame_control, duration, seq_num
1781  * and 3 or 4 addresses of length ETH_ALEN.
1782  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1783  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1784  */
1785 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1786 {
1787         if (ieee80211_has_a4(hdr->frame_control))
1788                 return (u8 *)hdr + 30;
1789         else
1790                 return (u8 *)hdr + 24;
1791 }
1792
1793 /**
1794  * ieee80211_get_SA - get pointer to SA
1795  * @hdr: the frame
1796  *
1797  * Given an 802.11 frame, this function returns the offset
1798  * to the source address (SA). It does not verify that the
1799  * header is long enough to contain the address, and the
1800  * header must be long enough to contain the frame control
1801  * field.
1802  */
1803 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1804 {
1805         if (ieee80211_has_a4(hdr->frame_control))
1806                 return hdr->addr4;
1807         if (ieee80211_has_fromds(hdr->frame_control))
1808                 return hdr->addr3;
1809         return hdr->addr2;
1810 }
1811
1812 /**
1813  * ieee80211_get_DA - get pointer to DA
1814  * @hdr: the frame
1815  *
1816  * Given an 802.11 frame, this function returns the offset
1817  * to the destination address (DA). It does not verify that
1818  * the header is long enough to contain the address, and the
1819  * header must be long enough to contain the frame control
1820  * field.
1821  */
1822 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1823 {
1824         if (ieee80211_has_tods(hdr->frame_control))
1825                 return hdr->addr3;
1826         else
1827                 return hdr->addr1;
1828 }
1829
1830 /**
1831  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1832  * @hdr: the frame (buffer must include at least the first octet of payload)
1833  */
1834 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1835 {
1836         if (ieee80211_is_disassoc(hdr->frame_control) ||
1837             ieee80211_is_deauth(hdr->frame_control))
1838                 return true;
1839
1840         if (ieee80211_is_action(hdr->frame_control)) {
1841                 u8 *category;
1842
1843                 /*
1844                  * Action frames, excluding Public Action frames, are Robust
1845                  * Management Frames. However, if we are looking at a Protected
1846                  * frame, skip the check since the data may be encrypted and
1847                  * the frame has already been found to be a Robust Management
1848                  * Frame (by the other end).
1849                  */
1850                 if (ieee80211_has_protected(hdr->frame_control))
1851                         return true;
1852                 category = ((u8 *) hdr) + 24;
1853                 return *category != WLAN_CATEGORY_PUBLIC &&
1854                         *category != WLAN_CATEGORY_HT &&
1855                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1856                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1857         }
1858
1859         return false;
1860 }
1861
1862 /**
1863  * ieee80211_is_public_action - check if frame is a public action frame
1864  * @hdr: the frame
1865  * @len: length of the frame
1866  */
1867 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1868                                               size_t len)
1869 {
1870         struct ieee80211_mgmt *mgmt = (void *)hdr;
1871
1872         if (len < IEEE80211_MIN_ACTION_SIZE)
1873                 return false;
1874         if (!ieee80211_is_action(hdr->frame_control))
1875                 return false;
1876         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1877 }
1878
1879 /**
1880  * ieee80211_fhss_chan_to_freq - get channel frequency
1881  * @channel: the FHSS channel
1882  *
1883  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1884  * Ref IEEE 802.11-2007 section 14.6
1885  */
1886 static inline int ieee80211_fhss_chan_to_freq(int channel)
1887 {
1888         if ((channel > 1) && (channel < 96))
1889                 return channel + 2400;
1890         else
1891                 return -1;
1892 }
1893
1894 /**
1895  * ieee80211_freq_to_fhss_chan - get channel
1896  * @freq: the channels frequency
1897  *
1898  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1899  * Ref IEEE 802.11-2007 section 14.6
1900  */
1901 static inline int ieee80211_freq_to_fhss_chan(int freq)
1902 {
1903         if ((freq > 2401) && (freq < 2496))
1904                 return freq - 2400;
1905         else
1906                 return -1;
1907 }
1908
1909 /**
1910  * ieee80211_dsss_chan_to_freq - get channel center frequency
1911  * @channel: the DSSS channel
1912  *
1913  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1914  * Ref IEEE 802.11-2007 section 15.6
1915  */
1916 static inline int ieee80211_dsss_chan_to_freq(int channel)
1917 {
1918         if ((channel > 0) && (channel < 14))
1919                 return 2407 + (channel * 5);
1920         else if (channel == 14)
1921                 return 2484;
1922         else
1923                 return -1;
1924 }
1925
1926 /**
1927  * ieee80211_freq_to_dsss_chan - get channel
1928  * @freq: the frequency
1929  *
1930  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1931  * Ref IEEE 802.11-2007 section 15.6
1932  *
1933  * This routine selects the channel with the closest center frequency.
1934  */
1935 static inline int ieee80211_freq_to_dsss_chan(int freq)
1936 {
1937         if ((freq >= 2410) && (freq < 2475))
1938                 return (freq - 2405) / 5;
1939         else if ((freq >= 2482) && (freq < 2487))
1940                 return 14;
1941         else
1942                 return -1;
1943 }
1944
1945 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1946  * Ref IEEE 802.11-2007 section 18.4.6.2
1947  *
1948  * The channels and frequencies are the same as those defined for DSSS
1949  */
1950 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1951 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1952
1953 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1954  * Ref IEEE 802.11-2007 section 19.4.2
1955  */
1956 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1957 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1958
1959 /**
1960  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1961  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1962  * @channel: the OFDM channel
1963  *
1964  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1965  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1966  */
1967 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1968 {
1969         if ((channel > 0) && (channel <= 200) &&
1970             (s_freq >= 4000))
1971                 return s_freq + (channel * 5);
1972         else
1973                 return -1;
1974 }
1975
1976 /**
1977  * ieee80211_freq_to_ofdm_channel - get channel
1978  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1979  * @freq: the frequency
1980  *
1981  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1982  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1983  *
1984  * This routine selects the channel with the closest center frequency.
1985  */
1986 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1987 {
1988         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1989             (s_freq >= 4000))
1990                 return (freq + 2 - s_freq) / 5;
1991         else
1992                 return -1;
1993 }
1994
1995 /**
1996  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1997  * @tu: the TUs
1998  */
1999 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2000 {
2001         return 1024 * tu;
2002 }
2003
2004 /**
2005  * ieee80211_check_tim - check if AID bit is set in TIM
2006  * @tim: the TIM IE
2007  * @tim_len: length of the TIM IE
2008  * @aid: the AID to look for
2009  */
2010 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2011                                        u8 tim_len, u16 aid)
2012 {
2013         u8 mask;
2014         u8 indexn0, indexn1, indexn2;
2015
2016         if (unlikely(!tim || tim_len < sizeof(*tim)))
2017                 return false;
2018
2019         aid &= 0x3fff;
2020         indexn0 = aid / 8;
2021         mask  = 1 << (aid & 7);
2022
2023         indexn1 = tim->bitmap_ctrl & 0xfe;
2024         indexn2 = tim_len + indexn1 - 4;
2025
2026         if (indexn0 < indexn1 || indexn0 > indexn2)
2027                 return false;
2028
2029         indexn0 -= indexn1;
2030
2031         return !!(tim->virtual_map[indexn0] & mask);
2032 }
2033
2034 #endif /* __LINUX_IEEE80211_H */