include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef LINUX_IEEE80211_H
  16 #define LINUX_IEEE80211_H
  17
  18 #include <linux/types.h>
  19 #include <asm/byteorder.h>
  20
  21 /*
  22  * DS bit usage
  23  *
  24  * TA = transmitter address
  25  * RA = receiver address
  26  * DA = destination address
  27  * SA = source address
  28  *
  29  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  30  * -----------------------------------------------------------------
  31  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  32  *  0       1       DA      BSSID   SA      -       AP -> STA
  33  *  1       0       BSSID   SA      DA      -       AP <- STA
  34  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  35  */
  36
  37 #define FCS_LEN 4
  38
  39 #define IEEE80211_FCTL_VERS             0x0003
  40 #define IEEE80211_FCTL_FTYPE            0x000c
  41 #define IEEE80211_FCTL_STYPE            0x00f0
  42 #define IEEE80211_FCTL_TODS             0x0100
  43 #define IEEE80211_FCTL_FROMDS           0x0200
  44 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  45 #define IEEE80211_FCTL_RETRY            0x0800
  46 #define IEEE80211_FCTL_PM               0x1000
  47 #define IEEE80211_FCTL_MOREDATA         0x2000
  48 #define IEEE80211_FCTL_PROTECTED        0x4000
  49 #define IEEE80211_FCTL_ORDER            0x8000
  50 #define IEEE80211_FCTL_CTL_EXT          0x0f00
  51
  52 #define IEEE80211_SCTL_FRAG             0x000F
  53 #define IEEE80211_SCTL_SEQ              0xFFF0
  54
  55 #define IEEE80211_FTYPE_MGMT            0x0000
  56 #define IEEE80211_FTYPE_CTL             0x0004
  57 #define IEEE80211_FTYPE_DATA            0x0008
  58 #define IEEE80211_FTYPE_EXT             0x000c
  59
  60 /* management */
  61 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  62 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  63 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  64 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  65 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  66 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  67 #define IEEE80211_STYPE_BEACON          0x0080
  68 #define IEEE80211_STYPE_ATIM            0x0090
  69 #define IEEE80211_STYPE_DISASSOC        0x00A0
  70 #define IEEE80211_STYPE_AUTH            0x00B0
  71 #define IEEE80211_STYPE_DEAUTH          0x00C0
  72 #define IEEE80211_STYPE_ACTION          0x00D0
  73
  74 /* control */
  75 #define IEEE80211_STYPE_CTL_EXT         0x0060
  76 #define IEEE80211_STYPE_BACK_REQ        0x0080
  77 #define IEEE80211_STYPE_BACK            0x0090
  78 #define IEEE80211_STYPE_PSPOLL          0x00A0
  79 #define IEEE80211_STYPE_RTS             0x00B0
  80 #define IEEE80211_STYPE_CTS             0x00C0
  81 #define IEEE80211_STYPE_ACK             0x00D0
  82 #define IEEE80211_STYPE_CFEND           0x00E0
  83 #define IEEE80211_STYPE_CFENDACK        0x00F0
  84
  85 /* data */
  86 #define IEEE80211_STYPE_DATA                    0x0000
  87 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  88 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  89 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  90 #define IEEE80211_STYPE_NULLFUNC                0x0040
  91 #define IEEE80211_STYPE_CFACK                   0x0050
  92 #define IEEE80211_STYPE_CFPOLL                  0x0060
  93 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  94 #define IEEE80211_STYPE_QOS_DATA                0x0080
  95 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  96 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  97 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  98 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  99 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
 100 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
 101 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
 102
 103 /* extension, added by 802.11ad */
 104 #define IEEE80211_STYPE_DMG_BEACON              0x0000
 105
 106 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 107 #define IEEE80211_CTL_EXT_POLL          0x2000
 108 #define IEEE80211_CTL_EXT_SPR           0x3000
 109 #define IEEE80211_CTL_EXT_GRANT 0x4000
 110 #define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 111 #define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 112 #define IEEE80211_CTL_EXT_SSW           0x8000
 113 #define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 114 #define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 115
 116 /* miscellaneous IEEE 802.11 constants */
 117 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 118 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 119 #define IEEE80211_MAX_AID               2007
 120 #define IEEE80211_MAX_TIM_LEN           251
 121 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 122    6.2.1.1.2.
 123
 124    802.11e clarifies the figure in section 7.1.2. The frame body is
 125    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 126 #define IEEE80211_MAX_DATA_LEN          2304
 127 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 128 #define IEEE80211_MAX_FRAME_LEN         2352
 129
 130 #define IEEE80211_MAX_SSID_LEN          32
 131
 132 #define IEEE80211_MAX_MESH_ID_LEN       32
 133
 134 #define IEEE80211_QOS_CTL_LEN           2
 135 /* 1d tag mask */
 136 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 137 /* TID mask */
 138 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 139 /* EOSP */
 140 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 141 /* ACK policy */
 142 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 143 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 144 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 145 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 146 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 147 /* A-MSDU 802.11n */
 148 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 149 /* Mesh Control 802.11s */
 150 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 151
 152 /* U-APSD queue for WMM IEs sent by AP */
 153 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 154 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 155
 156 /* U-APSD queues for WMM IEs sent by STA */
 157 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 158 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 159 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 160 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 161 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 162
 163 /* U-APSD max SP length for WMM IEs sent by STA */
 164 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 165 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 166 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 167 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 168 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 169 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 170
 171 #define IEEE80211_HT_CTL_LEN            4
 172
 173 struct ieee80211_hdr {
 174         __le16 frame_control;
 175         __le16 duration_id;
 176         u8 addr1[6];
 177         u8 addr2[6];
 178         u8 addr3[6];
 179         __le16 seq_ctrl;
 180         u8 addr4[6];
 181 } __attribute__ ((packed));
 182
 183 struct ieee80211_hdr_3addr {
 184         __le16 frame_control;
 185         __le16 duration_id;
 186         u8 addr1[6];
 187         u8 addr2[6];
 188         u8 addr3[6];
 189         __le16 seq_ctrl;
 190 } __attribute__ ((packed));
 191
 192 struct ieee80211_qos_hdr {
 193         __le16 frame_control;
 194         __le16 duration_id;
 195         u8 addr1[6];
 196         u8 addr2[6];
 197         u8 addr3[6];
 198         __le16 seq_ctrl;
 199         __le16 qos_ctrl;
 200 } __attribute__ ((packed));
 201
 202 /**
 203  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 204  * @fc: frame control bytes in little-endian byteorder
 205  */
 206 static inline int ieee80211_has_tods(__le16 fc)
 207 {
 208         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 209 }
 210
 211 /**
 212  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 213  * @fc: frame control bytes in little-endian byteorder
 214  */
 215 static inline int ieee80211_has_fromds(__le16 fc)
 216 {
 217         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 218 }
 219
 220 /**
 221  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 222  * @fc: frame control bytes in little-endian byteorder
 223  */
 224 static inline int ieee80211_has_a4(__le16 fc)
 225 {
 226         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 227         return (fc & tmp) == tmp;
 228 }
 229
 230 /**
 231  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 232  * @fc: frame control bytes in little-endian byteorder
 233  */
 234 static inline int ieee80211_has_morefrags(__le16 fc)
 235 {
 236         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 237 }
 238
 239 /**
 240  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 241  * @fc: frame control bytes in little-endian byteorder
 242  */
 243 static inline int ieee80211_has_retry(__le16 fc)
 244 {
 245         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 246 }
 247
 248 /**
 249  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 250  * @fc: frame control bytes in little-endian byteorder
 251  */
 252 static inline int ieee80211_has_pm(__le16 fc)
 253 {
 254         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 255 }
 256
 257 /**
 258  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 259  * @fc: frame control bytes in little-endian byteorder
 260  */
 261 static inline int ieee80211_has_moredata(__le16 fc)
 262 {
 263         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 264 }
 265
 266 /**
 267  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 268  * @fc: frame control bytes in little-endian byteorder
 269  */
 270 static inline int ieee80211_has_protected(__le16 fc)
 271 {
 272         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 273 }
 274
 275 /**
 276  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 277  * @fc: frame control bytes in little-endian byteorder
 278  */
 279 static inline int ieee80211_has_order(__le16 fc)
 280 {
 281         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 282 }
 283
 284 /**
 285  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 286  * @fc: frame control bytes in little-endian byteorder
 287  */
 288 static inline int ieee80211_is_mgmt(__le16 fc)
 289 {
 290         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 291                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 292 }
 293
 294 /**
 295  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 296  * @fc: frame control bytes in little-endian byteorder
 297  */
 298 static inline int ieee80211_is_ctl(__le16 fc)
 299 {
 300         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 301                cpu_to_le16(IEEE80211_FTYPE_CTL);
 302 }
 303
 304 /**
 305  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 306  * @fc: frame control bytes in little-endian byteorder
 307  */
 308 static inline int ieee80211_is_data(__le16 fc)
 309 {
 310         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 311                cpu_to_le16(IEEE80211_FTYPE_DATA);
 312 }
 313
 314 /**
 315  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 316  * @fc: frame control bytes in little-endian byteorder
 317  */
 318 static inline int ieee80211_is_data_qos(__le16 fc)
 319 {
 320         /*
 321          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 322          * to check the one bit
 323          */
 324         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 325                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 326 }
 327
 328 /**
 329  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 330  * @fc: frame control bytes in little-endian byteorder
 331  */
 332 static inline int ieee80211_is_data_present(__le16 fc)
 333 {
 334         /*
 335          * mask with 0x40 and test that that bit is clear to only return true
 336          * for the data-containing substypes.
 337          */
 338         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 339                cpu_to_le16(IEEE80211_FTYPE_DATA);
 340 }
 341
 342 /**
 343  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 344  * @fc: frame control bytes in little-endian byteorder
 345  */
 346 static inline int ieee80211_is_assoc_req(__le16 fc)
 347 {
 348         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 349                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 350 }
 351
 352 /**
 353  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 354  * @fc: frame control bytes in little-endian byteorder
 355  */
 356 static inline int ieee80211_is_assoc_resp(__le16 fc)
 357 {
 358         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 359                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 360 }
 361
 362 /**
 363  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 364  * @fc: frame control bytes in little-endian byteorder
 365  */
 366 static inline int ieee80211_is_reassoc_req(__le16 fc)
 367 {
 368         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 369                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 370 }
 371
 372 /**
 373  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 374  * @fc: frame control bytes in little-endian byteorder
 375  */
 376 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 377 {
 378         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 379                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 380 }
 381
 382 /**
 383  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 384  * @fc: frame control bytes in little-endian byteorder
 385  */
 386 static inline int ieee80211_is_probe_req(__le16 fc)
 387 {
 388         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 389                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 390 }
 391
 392 /**
 393  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 394  * @fc: frame control bytes in little-endian byteorder
 395  */
 396 static inline int ieee80211_is_probe_resp(__le16 fc)
 397 {
 398         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 399                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 400 }
 401
 402 /**
 403  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 404  * @fc: frame control bytes in little-endian byteorder
 405  */
 406 static inline int ieee80211_is_beacon(__le16 fc)
 407 {
 408         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 409                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 410 }
 411
 412 /**
 413  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 414  * @fc: frame control bytes in little-endian byteorder
 415  */
 416 static inline int ieee80211_is_atim(__le16 fc)
 417 {
 418         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 419                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 420 }
 421
 422 /**
 423  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 424  * @fc: frame control bytes in little-endian byteorder
 425  */
 426 static inline int ieee80211_is_disassoc(__le16 fc)
 427 {
 428         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 429                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 430 }
 431
 432 /**
 433  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 434  * @fc: frame control bytes in little-endian byteorder
 435  */
 436 static inline int ieee80211_is_auth(__le16 fc)
 437 {
 438         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 439                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 440 }
 441
 442 /**
 443  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 444  * @fc: frame control bytes in little-endian byteorder
 445  */
 446 static inline int ieee80211_is_deauth(__le16 fc)
 447 {
 448         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 449                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 450 }
 451
 452 /**
 453  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 454  * @fc: frame control bytes in little-endian byteorder
 455  */
 456 static inline int ieee80211_is_action(__le16 fc)
 457 {
 458         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 459                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 460 }
 461
 462 /**
 463  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 464  * @fc: frame control bytes in little-endian byteorder
 465  */
 466 static inline int ieee80211_is_back_req(__le16 fc)
 467 {
 468         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 469                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 470 }
 471
 472 /**
 473  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 474  * @fc: frame control bytes in little-endian byteorder
 475  */
 476 static inline int ieee80211_is_back(__le16 fc)
 477 {
 478         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 479                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 480 }
 481
 482 /**
 483  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 484  * @fc: frame control bytes in little-endian byteorder
 485  */
 486 static inline int ieee80211_is_pspoll(__le16 fc)
 487 {
 488         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 489                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 490 }
 491
 492 /**
 493  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 494  * @fc: frame control bytes in little-endian byteorder
 495  */
 496 static inline int ieee80211_is_rts(__le16 fc)
 497 {
 498         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 499                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 500 }
 501
 502 /**
 503  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 504  * @fc: frame control bytes in little-endian byteorder
 505  */
 506 static inline int ieee80211_is_cts(__le16 fc)
 507 {
 508         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 509                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 510 }
 511
 512 /**
 513  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 514  * @fc: frame control bytes in little-endian byteorder
 515  */
 516 static inline int ieee80211_is_ack(__le16 fc)
 517 {
 518         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 519                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 520 }
 521
 522 /**
 523  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 524  * @fc: frame control bytes in little-endian byteorder
 525  */
 526 static inline int ieee80211_is_cfend(__le16 fc)
 527 {
 528         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 529                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 530 }
 531
 532 /**
 533  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 534  * @fc: frame control bytes in little-endian byteorder
 535  */
 536 static inline int ieee80211_is_cfendack(__le16 fc)
 537 {
 538         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 539                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 540 }
 541
 542 /**
 543  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 544  * @fc: frame control bytes in little-endian byteorder
 545  */
 546 static inline int ieee80211_is_nullfunc(__le16 fc)
 547 {
 548         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 549                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 550 }
 551
 552 /**
 553  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 554  * @fc: frame control bytes in little-endian byteorder
 555  */
 556 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 557 {
 558         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 559                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 560 }
 561
 562 /**
 563  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 564  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 565  */
 566 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 567 {
 568         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 569 }
 570
 571 struct ieee80211s_hdr {
 572         u8 flags;
 573         u8 ttl;
 574         __le32 seqnum;
 575         u8 eaddr1[6];
 576         u8 eaddr2[6];
 577 } __attribute__ ((packed));
 578
 579 /* Mesh flags */
 580 #define MESH_FLAGS_AE_A4        0x1
 581 #define MESH_FLAGS_AE_A5_A6     0x2
 582 #define MESH_FLAGS_AE           0x3
 583 #define MESH_FLAGS_PS_DEEP      0x4
 584
 585 /**
 586  * enum ieee80211_preq_flags - mesh PREQ element flags
 587  *
 588  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 589  */
 590 enum ieee80211_preq_flags {
 591         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 592 };
 593
 594 /**
 595  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 596  *
 597  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 598  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 599  */
 600 enum ieee80211_preq_target_flags {
 601         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 602         IEEE80211_PREQ_USN_FLAG = 1<<2,
 603 };
 604
 605 /**
 606  * struct ieee80211_quiet_ie
 607  *
 608  * This structure refers to "Quiet information element"
 609  */
 610 struct ieee80211_quiet_ie {
 611         u8 count;
 612         u8 period;
 613         __le16 duration;
 614         __le16 offset;
 615 } __attribute__ ((packed));
 616
 617 /**
 618  * struct ieee80211_msrment_ie
 619  *
 620  * This structure refers to "Measurement Request/Report information element"
 621  */
 622 struct ieee80211_msrment_ie {
 623         u8 token;
 624         u8 mode;
 625         u8 type;
 626         u8 request[0];
 627 } __attribute__ ((packed));
 628
 629 /**
 630  * struct ieee80211_channel_sw_ie
 631  *
 632  * This structure refers to "Channel Switch Announcement information element"
 633  */
 634 struct ieee80211_channel_sw_ie {
 635         u8 mode;
 636         u8 new_ch_num;
 637         u8 count;
 638 } __attribute__ ((packed));
 639
 640 /**
 641  * struct ieee80211_tim
 642  *
 643  * This structure refers to "Traffic Indication Map information element"
 644  */
 645 struct ieee80211_tim_ie {
 646         u8 dtim_count;
 647         u8 dtim_period;
 648         u8 bitmap_ctrl;
 649         /* variable size: 1 - 251 bytes */
 650         u8 virtual_map[1];
 651 } __attribute__ ((packed));
 652
 653 /**
 654  * struct ieee80211_meshconf_ie
 655  *
 656  * This structure refers to "Mesh Configuration information element"
 657  */
 658 struct ieee80211_meshconf_ie {
 659         u8 meshconf_psel;
 660         u8 meshconf_pmetric;
 661         u8 meshconf_congest;
 662         u8 meshconf_synch;
 663         u8 meshconf_auth;
 664         u8 meshconf_form;
 665         u8 meshconf_cap;
 666 } __attribute__ ((packed));
 667
 668 /**
 669  * struct ieee80211_rann_ie
 670  *
 671  * This structure refers to "Root Announcement information element"
 672  */
 673 struct ieee80211_rann_ie {
 674         u8 rann_flags;
 675         u8 rann_hopcount;
 676         u8 rann_ttl;
 677         u8 rann_addr[6];
 678         __le32 rann_seq;
 679         __le32 rann_interval;
 680         __le32 rann_metric;
 681 } __attribute__ ((packed));
 682
 683 enum ieee80211_rann_flags {
 684         RANN_FLAG_IS_GATE = 1 << 0,
 685 };
 686
 687 #define WLAN_SA_QUERY_TR_ID_LEN 2
 688
 689 struct ieee80211_mgmt {
 690         __le16 frame_control;
 691         __le16 duration;
 692         u8 da[6];
 693         u8 sa[6];
 694         u8 bssid[6];
 695         __le16 seq_ctrl;
 696         union {
 697                 struct {
 698                         __le16 auth_alg;
 699                         __le16 auth_transaction;
 700                         __le16 status_code;
 701                         /* possibly followed by Challenge text */
 702                         u8 variable[0];
 703                 } __attribute__ ((packed)) auth;
 704                 struct {
 705                         __le16 reason_code;
 706                 } __attribute__ ((packed)) deauth;
 707                 struct {
 708                         __le16 capab_info;
 709                         __le16 listen_interval;
 710                         /* followed by SSID and Supported rates */
 711                         u8 variable[0];
 712                 } __attribute__ ((packed)) assoc_req;
 713                 struct {
 714                         __le16 capab_info;
 715                         __le16 status_code;
 716                         __le16 aid;
 717                         /* followed by Supported rates */
 718                         u8 variable[0];
 719                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 720                 struct {
 721                         __le16 capab_info;
 722                         __le16 listen_interval;
 723                         u8 current_ap[6];
 724                         /* followed by SSID and Supported rates */
 725                         u8 variable[0];
 726                 } __attribute__ ((packed)) reassoc_req;
 727                 struct {
 728                         __le16 reason_code;
 729                 } __attribute__ ((packed)) disassoc;
 730                 struct {
 731                         __le64 timestamp;
 732                         __le16 beacon_int;
 733                         __le16 capab_info;
 734                         /* followed by some of SSID, Supported rates,
 735                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 736                         u8 variable[0];
 737                 } __attribute__ ((packed)) beacon;
 738                 struct {
 739                         /* only variable items: SSID, Supported rates */
 740                         u8 variable[0];
 741                 } __attribute__ ((packed)) probe_req;
 742                 struct {
 743                         __le64 timestamp;
 744                         __le16 beacon_int;
 745                         __le16 capab_info;
 746                         /* followed by some of SSID, Supported rates,
 747                          * FH Params, DS Params, CF Params, IBSS Params */
 748                         u8 variable[0];
 749                 } __attribute__ ((packed)) probe_resp;
 750                 struct {
 751                         u8 category;
 752                         union {
 753                                 struct {
 754                                         u8 action_code;
 755                                         u8 dialog_token;
 756                                         u8 status_code;
 757                                         u8 variable[0];
 758                                 } __attribute__ ((packed)) wme_action;
 759                                 struct{
 760                                         u8 action_code;
 761                                         u8 element_id;
 762                                         u8 length;
 763                                         struct ieee80211_channel_sw_ie sw_elem;
 764                                 } __attribute__((packed)) chan_switch;
 765                                 struct{
 766                                         u8 action_code;
 767                                         u8 dialog_token;
 768                                         u8 element_id;
 769                                         u8 length;
 770                                         struct ieee80211_msrment_ie msr_elem;
 771                                 } __attribute__((packed)) measurement;
 772                                 struct{
 773                                         u8 action_code;
 774                                         u8 dialog_token;
 775                                         __le16 capab;
 776                                         __le16 timeout;
 777                                         __le16 start_seq_num;
 778                                 } __attribute__((packed)) addba_req;
 779                                 struct{
 780                                         u8 action_code;
 781                                         u8 dialog_token;
 782                                         __le16 status;
 783                                         __le16 capab;
 784                                         __le16 timeout;
 785                                 } __attribute__((packed)) addba_resp;
 786                                 struct{
 787                                         u8 action_code;
 788                                         __le16 params;
 789                                         __le16 reason_code;
 790                                 } __attribute__((packed)) delba;
 791                                 struct {
 792                                         u8 action_code;
 793                                         u8 variable[0];
 794                                 } __attribute__((packed)) self_prot;
 795                                 struct{
 796                                         u8 action_code;
 797                                         u8 variable[0];
 798                                 } __attribute__((packed)) mesh_action;
 799                                 struct {
 800                                         u8 action;
 801                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 802                                 } __attribute__ ((packed)) sa_query;
 803                                 struct {
 804                                         u8 action;
 805                                         u8 smps_control;
 806                                 } __attribute__ ((packed)) ht_smps;
 807                                 struct {
 808                                         u8 action_code;
 809                                         u8 dialog_token;
 810                                         __le16 capability;
 811                                         u8 variable[0];
 812                                 } __packed tdls_discover_resp;
 813                         } u;
 814                 } __attribute__ ((packed)) action;
 815         } u;
 816 } __attribute__ ((packed));
 817
 818 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 819 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 820
 821 /* mgmt header + 1 byte category code */
 822 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 823
 824
 825 /* Management MIC information element (IEEE 802.11w) */
 826 struct ieee80211_mmie {
 827         u8 element_id;
 828         u8 length;
 829         __le16 key_id;
 830         u8 sequence_number[6];
 831         u8 mic[8];
 832 } __attribute__ ((packed));
 833
 834 struct ieee80211_vendor_ie {
 835         u8 element_id;
 836         u8 len;
 837         u8 oui[3];
 838         u8 oui_type;
 839 } __packed;
 840
 841 /* Control frames */
 842 struct ieee80211_rts {
 843         __le16 frame_control;
 844         __le16 duration;
 845         u8 ra[6];
 846         u8 ta[6];
 847 } __attribute__ ((packed));
 848
 849 struct ieee80211_cts {
 850         __le16 frame_control;
 851         __le16 duration;
 852         u8 ra[6];
 853 } __attribute__ ((packed));
 854
 855 struct ieee80211_pspoll {
 856         __le16 frame_control;
 857         __le16 aid;
 858         u8 bssid[6];
 859         u8 ta[6];
 860 } __attribute__ ((packed));
 861
 862 /* TDLS */
 863
 864 /* Link-id information element */
 865 struct ieee80211_tdls_lnkie {
 866         u8 ie_type; /* Link Identifier IE */
 867         u8 ie_len;
 868         u8 bssid[6];
 869         u8 init_sta[6];
 870         u8 resp_sta[6];
 871 } __packed;
 872
 873 struct ieee80211_tdls_data {
 874         u8 da[6];
 875         u8 sa[6];
 876         __be16 ether_type;
 877         u8 payload_type;
 878         u8 category;
 879         u8 action_code;
 880         union {
 881                 struct {
 882                         u8 dialog_token;
 883                         __le16 capability;
 884                         u8 variable[0];
 885                 } __packed setup_req;
 886                 struct {
 887                         __le16 status_code;
 888                         u8 dialog_token;
 889                         __le16 capability;
 890                         u8 variable[0];
 891                 } __packed setup_resp;
 892                 struct {
 893                         __le16 status_code;
 894                         u8 dialog_token;
 895                         u8 variable[0];
 896                 } __packed setup_cfm;
 897                 struct {
 898                         __le16 reason_code;
 899                         u8 variable[0];
 900                 } __packed teardown;
 901                 struct {
 902                         u8 dialog_token;
 903                         u8 variable[0];
 904                 } __packed discover_req;
 905         } u;
 906 } __packed;
 907
 908 /**
 909  * struct ieee80211_bar - HT Block Ack Request
 910  *
 911  * This structure refers to "HT BlockAckReq" as
 912  * described in 802.11n draft section 7.2.1.7.1
 913  */
 914 struct ieee80211_bar {
 915         __le16 frame_control;
 916         __le16 duration;
 917         __u8 ra[6];
 918         __u8 ta[6];
 919         __le16 control;
 920         __le16 start_seq_num;
 921 } __attribute__((packed));
 922
 923 /* 802.11 BAR control masks */
 924 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 925 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 926 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 927 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 928 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 929
 930 #define IEEE80211_HT_MCS_MASK_LEN               10
 931
 932 /**
 933  * struct ieee80211_mcs_info - MCS information
 934  * @rx_mask: RX mask
 935  * @rx_highest: highest supported RX rate. If set represents
 936  *      the highest supported RX data rate in units of 1 Mbps.
 937  *      If this field is 0 this value should not be used to
 938  *      consider the highest RX data rate supported.
 939  * @tx_params: TX parameters
 940  */
 941 struct ieee80211_mcs_info {
 942         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 943         __le16 rx_highest;
 944         u8 tx_params;
 945         u8 reserved[3];
 946 } __attribute__((packed));
 947
 948 /* 802.11n HT capability MSC set */
 949 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 950 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 951 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 952 /* value 0 == 1 stream etc */
 953 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 954 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 955 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 956 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 957
 958 /*
 959  * 802.11n D5.0 20.3.5 / 20.6 says:
 960  * - indices 0 to 7 and 32 are single spatial stream
 961  * - 8 to 31 are multiple spatial streams using equal modulation
 962  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 963  * - remainder are multiple spatial streams using unequal modulation
 964  */
 965 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 966 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 967         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 968
 969 /**
 970  * struct ieee80211_ht_cap - HT capabilities
 971  *
 972  * This structure is the "HT capabilities element" as
 973  * described in 802.11n D5.0 7.3.2.57
 974  */
 975 struct ieee80211_ht_cap {
 976         __le16 cap_info;
 977         u8 ampdu_params_info;
 978
 979         /* 16 bytes MCS information */
 980         struct ieee80211_mcs_info mcs;
 981
 982         __le16 extended_ht_cap_info;
 983         __le32 tx_BF_cap_info;
 984         u8 antenna_selection_info;
 985 } __attribute__ ((packed));
 986
 987 /* 802.11n HT capabilities masks (for cap_info) */
 988 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 989 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 990 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 991 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 992 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 993 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 994 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 995 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 996 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 997 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 998 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 999 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1000 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1001 #define IEEE80211_HT_CAP_RESERVED               0x2000
1002 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1003 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1004
1005 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1006 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1007 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1008 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1009 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1010 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1011 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1012 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1013
1014 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1015 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1016 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1017 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1018
1019 /*
1020  * Maximum length of AMPDU that the STA can receive.
1021  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1022  */
1023 enum ieee80211_max_ampdu_length_exp {
1024         IEEE80211_HT_MAX_AMPDU_8K = 0,
1025         IEEE80211_HT_MAX_AMPDU_16K = 1,
1026         IEEE80211_HT_MAX_AMPDU_32K = 2,
1027         IEEE80211_HT_MAX_AMPDU_64K = 3
1028 };
1029
1030 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1031
1032 /* Minimum MPDU start spacing */
1033 enum ieee80211_min_mpdu_spacing {
1034         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1035         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1036         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1037         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1038         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1039         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1040         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1041         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1042 };
1043
1044 /**
1045  * struct ieee80211_ht_operation - HT operation IE
1046  *
1047  * This structure is the "HT operation element" as
1048  * described in 802.11n-2009 7.3.2.57
1049  */
1050 struct ieee80211_ht_operation {
1051         u8 primary_chan;
1052         u8 ht_param;
1053         __le16 operation_mode;
1054         __le16 stbc_param;
1055         u8 basic_set[16];
1056 } __attribute__ ((packed));
1057
1058 /* for ht_param */
1059 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1060 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1061 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1062 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1063 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1064 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1065
1066 /* for operation_mode */
1067 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1068 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1069 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1070 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1071 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1072 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1073 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1074
1075 /* for stbc_param */
1076 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1077 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1078 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1079 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1080 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1081 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1082
1083
1084 /* block-ack parameters */
1085 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1086 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1087 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1088 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1089 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1090
1091 /*
1092  * A-PMDU buffer sizes
1093  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1094  */
1095 #define IEEE80211_MIN_AMPDU_BUF 0x8
1096 #define IEEE80211_MAX_AMPDU_BUF 0x40
1097
1098
1099 /* Spatial Multiplexing Power Save Modes (for capability) */
1100 #define WLAN_HT_CAP_SM_PS_STATIC        0
1101 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1102 #define WLAN_HT_CAP_SM_PS_INVALID       2
1103 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1104
1105 /* for SM power control field lower two bits */
1106 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1107 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1108 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1109
1110 #define VHT_MCS_SUPPORTED_SET_SIZE      8
1111
1112 struct ieee80211_vht_capabilities {
1113         __le32 vht_capabilities_info;
1114         u8 vht_supported_mcs_set[VHT_MCS_SUPPORTED_SET_SIZE];
1115 } __packed;
1116
1117 struct ieee80211_vht_operation {
1118         u8 vht_op_info_chwidth;
1119         u8 vht_op_info_chan_center_freq_seg1_idx;
1120         u8 vht_op_info_chan_center_freq_seg2_idx;
1121         __le16 vht_basic_mcs_set;
1122 } __packed;
1123
1124 /**
1125  * struct ieee80211_vht_mcs_info - VHT MCS information
1126  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1127  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1128  *      STA can receive. Rate expressed in units of 1 Mbps.
1129  *      If this field is 0 this value should not be used to
1130  *      consider the highest RX data rate supported.
1131  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1132  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1133  *      STA can transmit. Rate expressed in units of 1 Mbps.
1134  *      If this field is 0 this value should not be used to
1135  *      consider the highest TX data rate supported.
1136  */
1137 struct ieee80211_vht_mcs_info {
1138         __le16 rx_mcs_map;
1139         __le16 rx_highest;
1140         __le16 tx_mcs_map;
1141         __le16 tx_highest;
1142 } __packed;
1143
1144 #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1145 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1146 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT  2
1147 #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1148
1149 /* 802.11ac VHT Capabilities */
1150 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                0x00000000
1151 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                0x00000001
1152 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454               0x00000002
1153 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ              0x00000004
1154 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ     0x00000008
1155 #define IEEE80211_VHT_CAP_RXLDPC                              0x00000010
1156 #define IEEE80211_VHT_CAP_SHORT_GI_80                         0x00000020
1157 #define IEEE80211_VHT_CAP_SHORT_GI_160                        0x00000040
1158 #define IEEE80211_VHT_CAP_TXSTBC                              0x00000080
1159 #define IEEE80211_VHT_CAP_RXSTBC_1                            0x00000100
1160 #define IEEE80211_VHT_CAP_RXSTBC_2                            0x00000200
1161 #define IEEE80211_VHT_CAP_RXSTBC_3                            0x00000300
1162 #define IEEE80211_VHT_CAP_RXSTBC_4                            0x00000400
1163 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE               0x00000800
1164 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE               0x00001000
1165 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX             0x00006000
1166 #define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX              0x00030000
1167 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE               0x00080000
1168 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE               0x00100000
1169 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                         0x00200000
1170 #define IEEE80211_VHT_CAP_HTC_VHT                             0x00400000
1171 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT          0x00800000
1172 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB   0x08000000
1173 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB     0x0c000000
1174 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                  0x10000000
1175 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                  0x20000000
1176
1177 /* Authentication algorithms */
1178 #define WLAN_AUTH_OPEN 0
1179 #define WLAN_AUTH_SHARED_KEY 1
1180 #define WLAN_AUTH_FT 2
1181 #define WLAN_AUTH_SAE 3
1182 #define WLAN_AUTH_LEAP 128
1183
1184 #define WLAN_AUTH_CHALLENGE_LEN 128
1185
1186 #define WLAN_CAPABILITY_ESS             (1<<0)
1187 #define WLAN_CAPABILITY_IBSS            (1<<1)
1188
1189 /*
1190  * A mesh STA sets the ESS and IBSS capability bits to zero.
1191  * however, this holds true for p2p probe responses (in the p2p_find
1192  * phase) as well.
1193  */
1194 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1195         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1196
1197 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1198 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1199 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1200 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1201 #define WLAN_CAPABILITY_PBCC            (1<<6)
1202 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1203
1204 /* 802.11h */
1205 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1206 #define WLAN_CAPABILITY_QOS             (1<<9)
1207 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1208 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1209
1210 /* DMG (60gHz) 802.11ad */
1211 /* type - bits 0..1 */
1212 #define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1213 #define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1214 #define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1215
1216 #define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1217 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
1218 #define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1219 #define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1220
1221 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1222 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1223
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 /* 802.11g ERP information element */
1234 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1235 #define WLAN_ERP_USE_PROTECTION (1<<1)
1236 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1237
1238 /* WLAN_ERP_BARKER_PREAMBLE values */
1239 enum {
1240         WLAN_ERP_PREAMBLE_SHORT = 0,
1241         WLAN_ERP_PREAMBLE_LONG = 1,
1242 };
1243
1244 /* Band ID, 802.11ad #8.4.1.45 */
1245 enum {
1246         IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1247         IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1248         IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1249         IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1250         IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1251         IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1252 };
1253
1254 /* Status codes */
1255 enum ieee80211_statuscode {
1256         WLAN_STATUS_SUCCESS = 0,
1257         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1258         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1259         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1260         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1261         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1262         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1263         WLAN_STATUS_CHALLENGE_FAIL = 15,
1264         WLAN_STATUS_AUTH_TIMEOUT = 16,
1265         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1266         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1267         /* 802.11b */
1268         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1269         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1270         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1271         /* 802.11h */
1272         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1273         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1274         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1275         /* 802.11g */
1276         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1277         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1278         /* 802.11w */
1279         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1280         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1281         /* 802.11i */
1282         WLAN_STATUS_INVALID_IE = 40,
1283         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1284         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1285         WLAN_STATUS_INVALID_AKMP = 43,
1286         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1287         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1288         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1289         /* 802.11e */
1290         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1291         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1292         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1293         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1294         WLAN_STATUS_REQUEST_DECLINED = 37,
1295         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1296         WLAN_STATUS_CHANGE_TSPEC = 39,
1297         WLAN_STATUS_WAIT_TS_DELAY = 47,
1298         WLAN_STATUS_NO_DIRECT_LINK = 48,
1299         WLAN_STATUS_STA_NOT_PRESENT = 49,
1300         WLAN_STATUS_STA_NOT_QSTA = 50,
1301         /* 802.11s */
1302         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1303         WLAN_STATUS_FCG_NOT_SUPP = 78,
1304         WLAN_STATUS_STA_NO_TBTT = 78,
1305         /* 802.11ad */
1306         WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1307         WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1308         WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1309         WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1310         WLAN_STATUS_PERFORMING_FST_NOW = 87,
1311         WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1312         WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1313         WLAN_STATUS_REJECT_DSE_BAND = 96,
1314         WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1315         WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1316 };
1317
1318
1319 /* Reason codes */
1320 enum ieee80211_reasoncode {
1321         WLAN_REASON_UNSPECIFIED = 1,
1322         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1323         WLAN_REASON_DEAUTH_LEAVING = 3,
1324         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1325         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1326         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1327         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1328         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1329         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1330         /* 802.11h */
1331         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1332         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1333         /* 802.11i */
1334         WLAN_REASON_INVALID_IE = 13,
1335         WLAN_REASON_MIC_FAILURE = 14,
1336         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1337         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1338         WLAN_REASON_IE_DIFFERENT = 17,
1339         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1340         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1341         WLAN_REASON_INVALID_AKMP = 20,
1342         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1343         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1344         WLAN_REASON_IEEE8021X_FAILED = 23,
1345         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1346         /* 802.11e */
1347         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1348         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1349         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1350         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1351         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1352         WLAN_REASON_QSTA_NOT_USE = 37,
1353         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1354         WLAN_REASON_QSTA_TIMEOUT = 39,
1355         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1356         /* 802.11s */
1357         WLAN_REASON_MESH_PEER_CANCELED = 52,
1358         WLAN_REASON_MESH_MAX_PEERS = 53,
1359         WLAN_REASON_MESH_CONFIG = 54,
1360         WLAN_REASON_MESH_CLOSE = 55,
1361         WLAN_REASON_MESH_MAX_RETRIES = 56,
1362         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1363         WLAN_REASON_MESH_INVALID_GTK = 58,
1364         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1365         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1366         WLAN_REASON_MESH_PATH_ERROR = 61,
1367         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1368         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1369         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1370         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1371         WLAN_REASON_MESH_CHAN = 66,
1372 };
1373
1374
1375 /* Information Element IDs */
1376 enum ieee80211_eid {
1377         WLAN_EID_SSID = 0,
1378         WLAN_EID_SUPP_RATES = 1,
1379         WLAN_EID_FH_PARAMS = 2,
1380         WLAN_EID_DS_PARAMS = 3,
1381         WLAN_EID_CF_PARAMS = 4,
1382         WLAN_EID_TIM = 5,
1383         WLAN_EID_IBSS_PARAMS = 6,
1384         WLAN_EID_CHALLENGE = 16,
1385
1386         WLAN_EID_COUNTRY = 7,
1387         WLAN_EID_HP_PARAMS = 8,
1388         WLAN_EID_HP_TABLE = 9,
1389         WLAN_EID_REQUEST = 10,
1390
1391         WLAN_EID_QBSS_LOAD = 11,
1392         WLAN_EID_EDCA_PARAM_SET = 12,
1393         WLAN_EID_TSPEC = 13,
1394         WLAN_EID_TCLAS = 14,
1395         WLAN_EID_SCHEDULE = 15,
1396         WLAN_EID_TS_DELAY = 43,
1397         WLAN_EID_TCLAS_PROCESSING = 44,
1398         WLAN_EID_QOS_CAPA = 46,
1399         /* 802.11z */
1400         WLAN_EID_LINK_ID = 101,
1401         /* 802.11s */
1402         WLAN_EID_MESH_CONFIG = 113,
1403         WLAN_EID_MESH_ID = 114,
1404         WLAN_EID_LINK_METRIC_REPORT = 115,
1405         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1406         WLAN_EID_PEER_MGMT = 117,
1407         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1408         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1409         WLAN_EID_BEACON_TIMING = 120,
1410         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1411         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1412         WLAN_EID_MCCAOP_ADVERT = 123,
1413         WLAN_EID_MCCAOP_TEARDOWN = 124,
1414         WLAN_EID_GANN = 125,
1415         WLAN_EID_RANN = 126,
1416         WLAN_EID_PREQ = 130,
1417         WLAN_EID_PREP = 131,
1418         WLAN_EID_PERR = 132,
1419         WLAN_EID_PXU = 137,
1420         WLAN_EID_PXUC = 138,
1421         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1422         WLAN_EID_MIC = 140,
1423
1424         WLAN_EID_PWR_CONSTRAINT = 32,
1425         WLAN_EID_PWR_CAPABILITY = 33,
1426         WLAN_EID_TPC_REQUEST = 34,
1427         WLAN_EID_TPC_REPORT = 35,
1428         WLAN_EID_SUPPORTED_CHANNELS = 36,
1429         WLAN_EID_CHANNEL_SWITCH = 37,
1430         WLAN_EID_MEASURE_REQUEST = 38,
1431         WLAN_EID_MEASURE_REPORT = 39,
1432         WLAN_EID_QUIET = 40,
1433         WLAN_EID_IBSS_DFS = 41,
1434
1435         WLAN_EID_ERP_INFO = 42,
1436         WLAN_EID_EXT_SUPP_RATES = 50,
1437
1438         WLAN_EID_HT_CAPABILITY = 45,
1439         WLAN_EID_HT_OPERATION = 61,
1440
1441         WLAN_EID_RSN = 48,
1442         WLAN_EID_MMIE = 76,
1443         WLAN_EID_WPA = 221,
1444         WLAN_EID_GENERIC = 221,
1445         WLAN_EID_VENDOR_SPECIFIC = 221,
1446         WLAN_EID_QOS_PARAMETER = 222,
1447
1448         WLAN_EID_AP_CHAN_REPORT = 51,
1449         WLAN_EID_NEIGHBOR_REPORT = 52,
1450         WLAN_EID_RCPI = 53,
1451         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1452         WLAN_EID_ANTENNA_INFO = 64,
1453         WLAN_EID_RSNI = 65,
1454         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1455         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1456         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1457         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1458         WLAN_EID_MULTIPLE_BSSID = 71,
1459         WLAN_EID_BSS_COEX_2040 = 72,
1460         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1461         WLAN_EID_EXT_CAPABILITY = 127,
1462
1463         WLAN_EID_MOBILITY_DOMAIN = 54,
1464         WLAN_EID_FAST_BSS_TRANSITION = 55,
1465         WLAN_EID_TIMEOUT_INTERVAL = 56,
1466         WLAN_EID_RIC_DATA = 57,
1467         WLAN_EID_RIC_DESCRIPTOR = 75,
1468
1469         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1470         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1471         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1472
1473         WLAN_EID_VHT_CAPABILITY = 191,
1474         WLAN_EID_VHT_OPERATION = 192,
1475
1476         /* 802.11ad */
1477         WLAN_EID_NON_TX_BSSID_CAP =  83,
1478         WLAN_EID_WAKEUP_SCHEDULE = 143,
1479         WLAN_EID_EXT_SCHEDULE = 144,
1480         WLAN_EID_STA_AVAILABILITY = 145,
1481         WLAN_EID_DMG_TSPEC = 146,
1482         WLAN_EID_DMG_AT = 147,
1483         WLAN_EID_DMG_CAP = 148,
1484         WLAN_EID_DMG_OPERATION = 151,
1485         WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1486         WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1487         WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1488         WLAN_EID_AWAKE_WINDOW = 157,
1489         WLAN_EID_MULTI_BAND = 158,
1490         WLAN_EID_ADDBA_EXT = 159,
1491         WLAN_EID_NEXT_PCP_LIST = 160,
1492         WLAN_EID_PCP_HANDOVER = 161,
1493         WLAN_EID_DMG_LINK_MARGIN = 162,
1494         WLAN_EID_SWITCHING_STREAM = 163,
1495         WLAN_EID_SESSION_TRANSITION = 164,
1496         WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1497         WLAN_EID_CLUSTER_REPORT = 166,
1498         WLAN_EID_RELAY_CAP = 167,
1499         WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1500         WLAN_EID_BEAM_LINK_MAINT = 169,
1501         WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1502         WLAN_EID_U_PID = 171,
1503         WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1504         WLAN_EID_QUIET_PERIOD_REQ = 175,
1505         WLAN_EID_QUIET_PERIOD_RESP = 177,
1506         WLAN_EID_EPAC_POLICY = 182,
1507         WLAN_EID_CLISTER_TIME_OFF = 183,
1508         WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1509 };
1510
1511 /* Action category code */
1512 enum ieee80211_category {
1513         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1514         WLAN_CATEGORY_QOS = 1,
1515         WLAN_CATEGORY_DLS = 2,
1516         WLAN_CATEGORY_BACK = 3,
1517         WLAN_CATEGORY_PUBLIC = 4,
1518         WLAN_CATEGORY_HT = 7,
1519         WLAN_CATEGORY_SA_QUERY = 8,
1520         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1521         WLAN_CATEGORY_TDLS = 12,
1522         WLAN_CATEGORY_MESH_ACTION = 13,
1523         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1524         WLAN_CATEGORY_SELF_PROTECTED = 15,
1525         WLAN_CATEGORY_DMG = 16,
1526         WLAN_CATEGORY_WMM = 17,
1527         WLAN_CATEGORY_FST = 18,
1528         WLAN_CATEGORY_UNPROT_DMG = 20,
1529         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1530         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1531 };
1532
1533 /* SPECTRUM_MGMT action code */
1534 enum ieee80211_spectrum_mgmt_actioncode {
1535         WLAN_ACTION_SPCT_MSR_REQ = 0,
1536         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1537         WLAN_ACTION_SPCT_TPC_REQ = 2,
1538         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1539         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1540 };
1541
1542 /* HT action codes */
1543 enum ieee80211_ht_actioncode {
1544         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1545         WLAN_HT_ACTION_SMPS = 1,
1546         WLAN_HT_ACTION_PSMP = 2,
1547         WLAN_HT_ACTION_PCO_PHASE = 3,
1548         WLAN_HT_ACTION_CSI = 4,
1549         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1550         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1551         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1552 };
1553
1554 /* Self Protected Action codes */
1555 enum ieee80211_self_protected_actioncode {
1556         WLAN_SP_RESERVED = 0,
1557         WLAN_SP_MESH_PEERING_OPEN = 1,
1558         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1559         WLAN_SP_MESH_PEERING_CLOSE = 3,
1560         WLAN_SP_MGK_INFORM = 4,
1561         WLAN_SP_MGK_ACK = 5,
1562 };
1563
1564 /* Mesh action codes */
1565 enum ieee80211_mesh_actioncode {
1566         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1567         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1568         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1569         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1570         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1571         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1572         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1573         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1574         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1575         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1576         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1577 };
1578
1579 /* Security key length */
1580 enum ieee80211_key_len {
1581         WLAN_KEY_LEN_WEP40 = 5,
1582         WLAN_KEY_LEN_WEP104 = 13,
1583         WLAN_KEY_LEN_CCMP = 16,
1584         WLAN_KEY_LEN_TKIP = 32,
1585         WLAN_KEY_LEN_AES_CMAC = 16,
1586 };
1587
1588 /* Public action codes */
1589 enum ieee80211_pub_actioncode {
1590         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1591 };
1592
1593 /* TDLS action codes */
1594 enum ieee80211_tdls_actioncode {
1595         WLAN_TDLS_SETUP_REQUEST = 0,
1596         WLAN_TDLS_SETUP_RESPONSE = 1,
1597         WLAN_TDLS_SETUP_CONFIRM = 2,
1598         WLAN_TDLS_TEARDOWN = 3,
1599         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1600         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1601         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1602         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1603         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1604         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1605         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1606 };
1607
1608 /*
1609  * TDLS capabililites to be enabled in the 5th byte of the
1610  * @WLAN_EID_EXT_CAPABILITY information element
1611  */
1612 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1613 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1614
1615 /* TDLS specific payload type in the LLC/SNAP header */
1616 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1617
1618 /**
1619  * enum - mesh synchronization method identifier
1620  *
1621  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1622  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1623  *      that will be specified in a vendor specific information element
1624  */
1625 enum {
1626         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1627         IEEE80211_SYNC_METHOD_VENDOR = 255,
1628 };
1629
1630 /**
1631  * enum - mesh path selection protocol identifier
1632  *
1633  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1634  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1635  *      be specified in a vendor specific information element
1636  */
1637 enum {
1638         IEEE80211_PATH_PROTOCOL_HWMP = 1,
1639         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1640 };
1641
1642 /**
1643  * enum - mesh path selection metric identifier
1644  *
1645  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1646  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1647  *      specified in a vendor specific information element
1648  */
1649 enum {
1650         IEEE80211_PATH_METRIC_AIRTIME = 1,
1651         IEEE80211_PATH_METRIC_VENDOR = 255,
1652 };
1653
1654 /**
1655  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1656  *
1657  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1658  *
1659  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1660  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1661  *      this value
1662  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1663  *      the proactive PREQ with proactive PREP subfield set to 0
1664  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1665  *      supports the proactive PREQ with proactive PREP subfield set to 1
1666  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1667  *      the proactive RANN
1668  */
1669 enum ieee80211_root_mode_identifier {
1670         IEEE80211_ROOTMODE_NO_ROOT = 0,
1671         IEEE80211_ROOTMODE_ROOT = 1,
1672         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1673         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1674         IEEE80211_PROACTIVE_RANN = 4,
1675 };
1676
1677 /*
1678  * IEEE 802.11-2007 7.3.2.9 Country information element
1679  *
1680  * Minimum length is 8 octets, ie len must be evenly
1681  * divisible by 2
1682  */
1683
1684 /* Although the spec says 8 I'm seeing 6 in practice */
1685 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1686
1687 /* The Country String field of the element shall be 3 octets in length */
1688 #define IEEE80211_COUNTRY_STRING_LEN    3
1689
1690 /*
1691  * For regulatory extension stuff see IEEE 802.11-2007
1692  * Annex I (page 1141) and Annex J (page 1147). Also
1693  * review 7.3.2.9.
1694  *
1695  * When dot11RegulatoryClassesRequired is true and the
1696  * first_channel/reg_extension_id is >= 201 then the IE
1697  * compromises of the 'ext' struct represented below:
1698  *
1699  *  - Regulatory extension ID - when generating IE this just needs
1700  *    to be monotonically increasing for each triplet passed in
1701  *    the IE
1702  *  - Regulatory class - index into set of rules
1703  *  - Coverage class - index into air propagation time (Table 7-27),
1704  *    in microseconds, you can compute the air propagation time from
1705  *    the index by multiplying by 3, so index 10 yields a propagation
1706  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1707  *    yet. A value of 0 inicates air propagation of <= 1 us.
1708  *
1709  *  See also Table I.2 for Emission limit sets and table
1710  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1711  *  a reg_class to an emission limit set and behavior limit set.
1712  */
1713 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1714
1715 /*
1716  *  Channels numbers in the IE must be monotonically increasing
1717  *  if dot11RegulatoryClassesRequired is not true.
1718  *
1719  *  If dot11RegulatoryClassesRequired is true consecutive
1720  *  subband triplets following a regulatory triplet shall
1721  *  have monotonically increasing first_channel number fields.
1722  *
1723  *  Channel numbers shall not overlap.
1724  *
1725  *  Note that max_power is signed.
1726  */
1727 struct ieee80211_country_ie_triplet {
1728         union {
1729                 struct {
1730                         u8 first_channel;
1731                         u8 num_channels;
1732                         s8 max_power;
1733                 } __attribute__ ((packed)) chans;
1734                 struct {
1735                         u8 reg_extension_id;
1736                         u8 reg_class;
1737                         u8 coverage_class;
1738                 } __attribute__ ((packed)) ext;
1739         };
1740 } __attribute__ ((packed));
1741
1742 enum ieee80211_timeout_interval_type {
1743         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1744         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1745         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1746 };
1747
1748 /* BACK action code */
1749 enum ieee80211_back_actioncode {
1750         WLAN_ACTION_ADDBA_REQ = 0,
1751         WLAN_ACTION_ADDBA_RESP = 1,
1752         WLAN_ACTION_DELBA = 2,
1753 };
1754
1755 /* BACK (block-ack) parties */
1756 enum ieee80211_back_parties {
1757         WLAN_BACK_RECIPIENT = 0,
1758         WLAN_BACK_INITIATOR = 1,
1759 };
1760
1761 /* SA Query action */
1762 enum ieee80211_sa_query_action {
1763         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1764         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1765 };
1766
1767
1768 /* cipher suite selectors */
1769 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1770 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1771 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1772 /* reserved:                            0x000FAC03 */
1773 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1774 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1775 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1776 #define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
1777
1778 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1779
1780 /* AKM suite selectors */
1781 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1782 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1783 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1784 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1785
1786 #define WLAN_MAX_KEY_LEN                32
1787
1788 #define WLAN_PMKID_LEN                  16
1789
1790 #define WLAN_OUI_WFA                    0x506f9a
1791 #define WLAN_OUI_TYPE_WFA_P2P           9
1792 #define WLAN_OUI_MICROSOFT              0x0050f2
1793 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
1794 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
1795 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
1796
1797 /*
1798  * WMM/802.11e Tspec Element
1799  */
1800 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1801 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1802
1803 enum ieee80211_tspec_status_code {
1804         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1805         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1806 };
1807
1808 struct ieee80211_tspec_ie {
1809         u8 element_id;
1810         u8 len;
1811         u8 oui[3];
1812         u8 oui_type;
1813         u8 oui_subtype;
1814         u8 version;
1815         __le16 tsinfo;
1816         u8 tsinfo_resvd;
1817         __le16 nominal_msdu;
1818         __le16 max_msdu;
1819         __le32 min_service_int;
1820         __le32 max_service_int;
1821         __le32 inactivity_int;
1822         __le32 suspension_int;
1823         __le32 service_start_time;
1824         __le32 min_data_rate;
1825         __le32 mean_data_rate;
1826         __le32 peak_data_rate;
1827         __le32 max_burst_size;
1828         __le32 delay_bound;
1829         __le32 min_phy_rate;
1830         __le16 sba;
1831         __le16 medium_time;
1832 } __packed;
1833
1834 /**
1835  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1836  * @hdr: the frame
1837  *
1838  * The qos ctrl bytes come after the frame_control, duration, seq_num
1839  * and 3 or 4 addresses of length ETH_ALEN.
1840  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1841  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1842  */
1843 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1844 {
1845         if (ieee80211_has_a4(hdr->frame_control))
1846                 return (u8 *)hdr + 30;
1847         else
1848                 return (u8 *)hdr + 24;
1849 }
1850
1851 /**
1852  * ieee80211_get_SA - get pointer to SA
1853  * @hdr: the frame
1854  *
1855  * Given an 802.11 frame, this function returns the offset
1856  * to the source address (SA). It does not verify that the
1857  * header is long enough to contain the address, and the
1858  * header must be long enough to contain the frame control
1859  * field.
1860  */
1861 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1862 {
1863         if (ieee80211_has_a4(hdr->frame_control))
1864                 return hdr->addr4;
1865         if (ieee80211_has_fromds(hdr->frame_control))
1866                 return hdr->addr3;
1867         return hdr->addr2;
1868 }
1869
1870 /**
1871  * ieee80211_get_DA - get pointer to DA
1872  * @hdr: the frame
1873  *
1874  * Given an 802.11 frame, this function returns the offset
1875  * to the destination address (DA). It does not verify that
1876  * the header is long enough to contain the address, and the
1877  * header must be long enough to contain the frame control
1878  * field.
1879  */
1880 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1881 {
1882         if (ieee80211_has_tods(hdr->frame_control))
1883                 return hdr->addr3;
1884         else
1885                 return hdr->addr1;
1886 }
1887
1888 /**
1889  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1890  * @hdr: the frame (buffer must include at least the first octet of payload)
1891  */
1892 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1893 {
1894         if (ieee80211_is_disassoc(hdr->frame_control) ||
1895             ieee80211_is_deauth(hdr->frame_control))
1896                 return true;
1897
1898         if (ieee80211_is_action(hdr->frame_control)) {
1899                 u8 *category;
1900
1901                 /*
1902                  * Action frames, excluding Public Action frames, are Robust
1903                  * Management Frames. However, if we are looking at a Protected
1904                  * frame, skip the check since the data may be encrypted and
1905                  * the frame has already been found to be a Robust Management
1906                  * Frame (by the other end).
1907                  */
1908                 if (ieee80211_has_protected(hdr->frame_control))
1909                         return true;
1910                 category = ((u8 *) hdr) + 24;
1911                 return *category != WLAN_CATEGORY_PUBLIC &&
1912                         *category != WLAN_CATEGORY_HT &&
1913                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1914                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1915         }
1916
1917         return false;
1918 }
1919
1920 /**
1921  * ieee80211_is_public_action - check if frame is a public action frame
1922  * @hdr: the frame
1923  * @len: length of the frame
1924  */
1925 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1926                                               size_t len)
1927 {
1928         struct ieee80211_mgmt *mgmt = (void *)hdr;
1929
1930         if (len < IEEE80211_MIN_ACTION_SIZE)
1931                 return false;
1932         if (!ieee80211_is_action(hdr->frame_control))
1933                 return false;
1934         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1935 }
1936
1937 /**
1938  * ieee80211_fhss_chan_to_freq - get channel frequency
1939  * @channel: the FHSS channel
1940  *
1941  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1942  * Ref IEEE 802.11-2007 section 14.6
1943  */
1944 static inline int ieee80211_fhss_chan_to_freq(int channel)
1945 {
1946         if ((channel > 1) && (channel < 96))
1947                 return channel + 2400;
1948         else
1949                 return -1;
1950 }
1951
1952 /**
1953  * ieee80211_freq_to_fhss_chan - get channel
1954  * @freq: the channels frequency
1955  *
1956  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1957  * Ref IEEE 802.11-2007 section 14.6
1958  */
1959 static inline int ieee80211_freq_to_fhss_chan(int freq)
1960 {
1961         if ((freq > 2401) && (freq < 2496))
1962                 return freq - 2400;
1963         else
1964                 return -1;
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 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
2004  * Ref IEEE 802.11-2007 section 18.4.6.2
2005  *
2006  * The channels and frequencies are the same as those defined for DSSS
2007  */
2008 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
2009 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
2010
2011 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
2012  * Ref IEEE 802.11-2007 section 19.4.2
2013  */
2014 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
2015 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
2016
2017 /**
2018  * ieee80211_ofdm_chan_to_freq - get channel center frequency
2019  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
2020  * @channel: the OFDM channel
2021  *
2022  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
2023  * Ref IEEE 802.11-2007 section 17.3.8.3.2
2024  */
2025 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
2026 {
2027         if ((channel > 0) && (channel <= 200) &&
2028             (s_freq >= 4000))
2029                 return s_freq + (channel * 5);
2030         else
2031                 return -1;
2032 }
2033
2034 /**
2035  * ieee80211_freq_to_ofdm_channel - get channel
2036  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
2037  * @freq: the frequency
2038  *
2039  * Convert frequency (MHz) to IEEE802.11 OFDM channel
2040  * Ref IEEE 802.11-2007 section 17.3.8.3.2
2041  *
2042  * This routine selects the channel with the closest center frequency.
2043  */
2044 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
2045 {
2046         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
2047             (s_freq >= 4000))
2048                 return (freq + 2 - s_freq) / 5;
2049         else
2050                 return -1;
2051 }
2052
2053 /**
2054  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2055  * @tu: the TUs
2056  */
2057 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2058 {
2059         return 1024 * tu;
2060 }
2061
2062 /**
2063  * ieee80211_check_tim - check if AID bit is set in TIM
2064  * @tim: the TIM IE
2065  * @tim_len: length of the TIM IE
2066  * @aid: the AID to look for
2067  */
2068 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2069                                        u8 tim_len, u16 aid)
2070 {
2071         u8 mask;
2072         u8 index, indexn1, indexn2;
2073
2074         if (unlikely(!tim || tim_len < sizeof(*tim)))
2075                 return false;
2076
2077         aid &= 0x3fff;
2078         index = aid / 8;
2079         mask  = 1 << (aid & 7);
2080
2081         indexn1 = tim->bitmap_ctrl & 0xfe;
2082         indexn2 = tim_len + indexn1 - 4;
2083
2084         if (index < indexn1 || index > indexn2)
2085                 return false;
2086
2087         index -= indexn1;
2088
2089         return !!(tim->virtual_map[index] & mask);
2090 }
2091
2092 #endif /* LINUX_IEEE80211_H */