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 #define IEEE80211_QOS_CTL_TID_MASK      0x000F
 118 #define IEEE80211_QOS_CTL_TAG1D_MASK    0x0007
 119
 120 /* U-APSD queue for WMM IEs sent by AP */
 121 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 122 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 123
 124 /* U-APSD queues for WMM IEs sent by STA */
 125 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 126 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 127 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 128 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 129 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 130
 131 /* U-APSD max SP length for WMM IEs sent by STA */
 132 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 133 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 134 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 135 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 136 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 137 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 138
 139 #define IEEE80211_HT_CTL_LEN            4
 140
 141 struct ieee80211_hdr {
 142         __le16 frame_control;
 143         __le16 duration_id;
 144         u8 addr1[6];
 145         u8 addr2[6];
 146         u8 addr3[6];
 147         __le16 seq_ctrl;
 148         u8 addr4[6];
 149 } __attribute__ ((packed));
 150
 151 struct ieee80211_hdr_3addr {
 152         __le16 frame_control;
 153         __le16 duration_id;
 154         u8 addr1[6];
 155         u8 addr2[6];
 156         u8 addr3[6];
 157         __le16 seq_ctrl;
 158 } __attribute__ ((packed));
 159
 160 struct ieee80211_qos_hdr {
 161         __le16 frame_control;
 162         __le16 duration_id;
 163         u8 addr1[6];
 164         u8 addr2[6];
 165         u8 addr3[6];
 166         __le16 seq_ctrl;
 167         __le16 qos_ctrl;
 168 } __attribute__ ((packed));
 169
 170 /**
 171  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 172  * @fc: frame control bytes in little-endian byteorder
 173  */
 174 static inline int ieee80211_has_tods(__le16 fc)
 175 {
 176         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 177 }
 178
 179 /**
 180  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 181  * @fc: frame control bytes in little-endian byteorder
 182  */
 183 static inline int ieee80211_has_fromds(__le16 fc)
 184 {
 185         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 186 }
 187
 188 /**
 189  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 190  * @fc: frame control bytes in little-endian byteorder
 191  */
 192 static inline int ieee80211_has_a4(__le16 fc)
 193 {
 194         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 195         return (fc & tmp) == tmp;
 196 }
 197
 198 /**
 199  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 200  * @fc: frame control bytes in little-endian byteorder
 201  */
 202 static inline int ieee80211_has_morefrags(__le16 fc)
 203 {
 204         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 205 }
 206
 207 /**
 208  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 209  * @fc: frame control bytes in little-endian byteorder
 210  */
 211 static inline int ieee80211_has_retry(__le16 fc)
 212 {
 213         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 214 }
 215
 216 /**
 217  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 218  * @fc: frame control bytes in little-endian byteorder
 219  */
 220 static inline int ieee80211_has_pm(__le16 fc)
 221 {
 222         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 223 }
 224
 225 /**
 226  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 227  * @fc: frame control bytes in little-endian byteorder
 228  */
 229 static inline int ieee80211_has_moredata(__le16 fc)
 230 {
 231         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 232 }
 233
 234 /**
 235  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 236  * @fc: frame control bytes in little-endian byteorder
 237  */
 238 static inline int ieee80211_has_protected(__le16 fc)
 239 {
 240         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 241 }
 242
 243 /**
 244  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 245  * @fc: frame control bytes in little-endian byteorder
 246  */
 247 static inline int ieee80211_has_order(__le16 fc)
 248 {
 249         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 250 }
 251
 252 /**
 253  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 254  * @fc: frame control bytes in little-endian byteorder
 255  */
 256 static inline int ieee80211_is_mgmt(__le16 fc)
 257 {
 258         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 259                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 260 }
 261
 262 /**
 263  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 264  * @fc: frame control bytes in little-endian byteorder
 265  */
 266 static inline int ieee80211_is_ctl(__le16 fc)
 267 {
 268         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 269                cpu_to_le16(IEEE80211_FTYPE_CTL);
 270 }
 271
 272 /**
 273  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 274  * @fc: frame control bytes in little-endian byteorder
 275  */
 276 static inline int ieee80211_is_data(__le16 fc)
 277 {
 278         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 279                cpu_to_le16(IEEE80211_FTYPE_DATA);
 280 }
 281
 282 /**
 283  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 284  * @fc: frame control bytes in little-endian byteorder
 285  */
 286 static inline int ieee80211_is_data_qos(__le16 fc)
 287 {
 288         /*
 289          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 290          * to check the one bit
 291          */
 292         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 293                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 294 }
 295
 296 /**
 297  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 298  * @fc: frame control bytes in little-endian byteorder
 299  */
 300 static inline int ieee80211_is_data_present(__le16 fc)
 301 {
 302         /*
 303          * mask with 0x40 and test that that bit is clear to only return true
 304          * for the data-containing substypes.
 305          */
 306         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 307                cpu_to_le16(IEEE80211_FTYPE_DATA);
 308 }
 309
 310 /**
 311  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 312  * @fc: frame control bytes in little-endian byteorder
 313  */
 314 static inline int ieee80211_is_assoc_req(__le16 fc)
 315 {
 316         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 317                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 318 }
 319
 320 /**
 321  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 322  * @fc: frame control bytes in little-endian byteorder
 323  */
 324 static inline int ieee80211_is_assoc_resp(__le16 fc)
 325 {
 326         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 327                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 328 }
 329
 330 /**
 331  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 332  * @fc: frame control bytes in little-endian byteorder
 333  */
 334 static inline int ieee80211_is_reassoc_req(__le16 fc)
 335 {
 336         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 337                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 338 }
 339
 340 /**
 341  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 342  * @fc: frame control bytes in little-endian byteorder
 343  */
 344 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 345 {
 346         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 347                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 348 }
 349
 350 /**
 351  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 352  * @fc: frame control bytes in little-endian byteorder
 353  */
 354 static inline int ieee80211_is_probe_req(__le16 fc)
 355 {
 356         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 357                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 358 }
 359
 360 /**
 361  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 362  * @fc: frame control bytes in little-endian byteorder
 363  */
 364 static inline int ieee80211_is_probe_resp(__le16 fc)
 365 {
 366         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 367                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 368 }
 369
 370 /**
 371  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 372  * @fc: frame control bytes in little-endian byteorder
 373  */
 374 static inline int ieee80211_is_beacon(__le16 fc)
 375 {
 376         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 377                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 378 }
 379
 380 /**
 381  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 382  * @fc: frame control bytes in little-endian byteorder
 383  */
 384 static inline int ieee80211_is_atim(__le16 fc)
 385 {
 386         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 387                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 388 }
 389
 390 /**
 391  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 392  * @fc: frame control bytes in little-endian byteorder
 393  */
 394 static inline int ieee80211_is_disassoc(__le16 fc)
 395 {
 396         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 397                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 398 }
 399
 400 /**
 401  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 402  * @fc: frame control bytes in little-endian byteorder
 403  */
 404 static inline int ieee80211_is_auth(__le16 fc)
 405 {
 406         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 407                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 408 }
 409
 410 /**
 411  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 412  * @fc: frame control bytes in little-endian byteorder
 413  */
 414 static inline int ieee80211_is_deauth(__le16 fc)
 415 {
 416         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 417                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 418 }
 419
 420 /**
 421  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 422  * @fc: frame control bytes in little-endian byteorder
 423  */
 424 static inline int ieee80211_is_action(__le16 fc)
 425 {
 426         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 427                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 428 }
 429
 430 /**
 431  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 432  * @fc: frame control bytes in little-endian byteorder
 433  */
 434 static inline int ieee80211_is_back_req(__le16 fc)
 435 {
 436         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 437                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 438 }
 439
 440 /**
 441  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 442  * @fc: frame control bytes in little-endian byteorder
 443  */
 444 static inline int ieee80211_is_back(__le16 fc)
 445 {
 446         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 447                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 448 }
 449
 450 /**
 451  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 452  * @fc: frame control bytes in little-endian byteorder
 453  */
 454 static inline int ieee80211_is_pspoll(__le16 fc)
 455 {
 456         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 457                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 458 }
 459
 460 /**
 461  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 462  * @fc: frame control bytes in little-endian byteorder
 463  */
 464 static inline int ieee80211_is_rts(__le16 fc)
 465 {
 466         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 467                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 468 }
 469
 470 /**
 471  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 472  * @fc: frame control bytes in little-endian byteorder
 473  */
 474 static inline int ieee80211_is_cts(__le16 fc)
 475 {
 476         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 477                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 478 }
 479
 480 /**
 481  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 482  * @fc: frame control bytes in little-endian byteorder
 483  */
 484 static inline int ieee80211_is_ack(__le16 fc)
 485 {
 486         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 487                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 488 }
 489
 490 /**
 491  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 492  * @fc: frame control bytes in little-endian byteorder
 493  */
 494 static inline int ieee80211_is_cfend(__le16 fc)
 495 {
 496         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 497                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 498 }
 499
 500 /**
 501  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 502  * @fc: frame control bytes in little-endian byteorder
 503  */
 504 static inline int ieee80211_is_cfendack(__le16 fc)
 505 {
 506         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 507                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 508 }
 509
 510 /**
 511  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 512  * @fc: frame control bytes in little-endian byteorder
 513  */
 514 static inline int ieee80211_is_nullfunc(__le16 fc)
 515 {
 516         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 517                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 518 }
 519
 520 /**
 521  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 522  * @fc: frame control bytes in little-endian byteorder
 523  */
 524 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 525 {
 526         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 527                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 528 }
 529
 530 struct ieee80211s_hdr {
 531         u8 flags;
 532         u8 ttl;
 533         __le32 seqnum;
 534         u8 eaddr1[6];
 535         u8 eaddr2[6];
 536         u8 eaddr3[6];
 537 } __attribute__ ((packed));
 538
 539 /* Mesh flags */
 540 #define MESH_FLAGS_AE_A4        0x1
 541 #define MESH_FLAGS_AE_A5_A6     0x2
 542 #define MESH_FLAGS_AE           0x3
 543 #define MESH_FLAGS_PS_DEEP      0x4
 544
 545 /**
 546  * struct ieee80211_quiet_ie
 547  *
 548  * This structure refers to "Quiet information element"
 549  */
 550 struct ieee80211_quiet_ie {
 551         u8 count;
 552         u8 period;
 553         __le16 duration;
 554         __le16 offset;
 555 } __attribute__ ((packed));
 556
 557 /**
 558  * struct ieee80211_msrment_ie
 559  *
 560  * This structure refers to "Measurement Request/Report information element"
 561  */
 562 struct ieee80211_msrment_ie {
 563         u8 token;
 564         u8 mode;
 565         u8 type;
 566         u8 request[0];
 567 } __attribute__ ((packed));
 568
 569 /**
 570  * struct ieee80211_channel_sw_ie
 571  *
 572  * This structure refers to "Channel Switch Announcement information element"
 573  */
 574 struct ieee80211_channel_sw_ie {
 575         u8 mode;
 576         u8 new_ch_num;
 577         u8 count;
 578 } __attribute__ ((packed));
 579
 580 /**
 581  * struct ieee80211_tim
 582  *
 583  * This structure refers to "Traffic Indication Map information element"
 584  */
 585 struct ieee80211_tim_ie {
 586         u8 dtim_count;
 587         u8 dtim_period;
 588         u8 bitmap_ctrl;
 589         /* variable size: 1 - 251 bytes */
 590         u8 virtual_map[1];
 591 } __attribute__ ((packed));
 592
 593 /**
 594  * struct ieee80211_meshconf_ie
 595  *
 596  * This structure refers to "Mesh Configuration information element"
 597  */
 598 struct ieee80211_meshconf_ie {
 599         u8 meshconf_psel;
 600         u8 meshconf_pmetric;
 601         u8 meshconf_congest;
 602         u8 meshconf_synch;
 603         u8 meshconf_auth;
 604         u8 meshconf_form;
 605         u8 meshconf_cap;
 606 } __attribute__ ((packed));
 607
 608 /**
 609  * struct ieee80211_rann_ie
 610  *
 611  * This structure refers to "Root Announcement information element"
 612  */
 613 struct ieee80211_rann_ie {
 614         u8 rann_flags;
 615         u8 rann_hopcount;
 616         u8 rann_ttl;
 617         u8 rann_addr[6];
 618         u32 rann_seq;
 619         u32 rann_metric;
 620 } __attribute__ ((packed));
 621
 622 #define WLAN_SA_QUERY_TR_ID_LEN 2
 623
 624 struct ieee80211_mgmt {
 625         __le16 frame_control;
 626         __le16 duration;
 627         u8 da[6];
 628         u8 sa[6];
 629         u8 bssid[6];
 630         __le16 seq_ctrl;
 631         union {
 632                 struct {
 633                         __le16 auth_alg;
 634                         __le16 auth_transaction;
 635                         __le16 status_code;
 636                         /* possibly followed by Challenge text */
 637                         u8 variable[0];
 638                 } __attribute__ ((packed)) auth;
 639                 struct {
 640                         __le16 reason_code;
 641                 } __attribute__ ((packed)) deauth;
 642                 struct {
 643                         __le16 capab_info;
 644                         __le16 listen_interval;
 645                         /* followed by SSID and Supported rates */
 646                         u8 variable[0];
 647                 } __attribute__ ((packed)) assoc_req;
 648                 struct {
 649                         __le16 capab_info;
 650                         __le16 status_code;
 651                         __le16 aid;
 652                         /* followed by Supported rates */
 653                         u8 variable[0];
 654                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 655                 struct {
 656                         __le16 capab_info;
 657                         __le16 listen_interval;
 658                         u8 current_ap[6];
 659                         /* followed by SSID and Supported rates */
 660                         u8 variable[0];
 661                 } __attribute__ ((packed)) reassoc_req;
 662                 struct {
 663                         __le16 reason_code;
 664                 } __attribute__ ((packed)) disassoc;
 665                 struct {
 666                         __le64 timestamp;
 667                         __le16 beacon_int;
 668                         __le16 capab_info;
 669                         /* followed by some of SSID, Supported rates,
 670                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 671                         u8 variable[0];
 672                 } __attribute__ ((packed)) beacon;
 673                 struct {
 674                         /* only variable items: SSID, Supported rates */
 675                         u8 variable[0];
 676                 } __attribute__ ((packed)) probe_req;
 677                 struct {
 678                         __le64 timestamp;
 679                         __le16 beacon_int;
 680                         __le16 capab_info;
 681                         /* followed by some of SSID, Supported rates,
 682                          * FH Params, DS Params, CF Params, IBSS Params */
 683                         u8 variable[0];
 684                 } __attribute__ ((packed)) probe_resp;
 685                 struct {
 686                         u8 category;
 687                         union {
 688                                 struct {
 689                                         u8 action_code;
 690                                         u8 dialog_token;
 691                                         u8 status_code;
 692                                         u8 variable[0];
 693                                 } __attribute__ ((packed)) wme_action;
 694                                 struct{
 695                                         u8 action_code;
 696                                         u8 element_id;
 697                                         u8 length;
 698                                         struct ieee80211_channel_sw_ie sw_elem;
 699                                 } __attribute__((packed)) chan_switch;
 700                                 struct{
 701                                         u8 action_code;
 702                                         u8 dialog_token;
 703                                         u8 element_id;
 704                                         u8 length;
 705                                         struct ieee80211_msrment_ie msr_elem;
 706                                 } __attribute__((packed)) measurement;
 707                                 struct{
 708                                         u8 action_code;
 709                                         u8 dialog_token;
 710                                         __le16 capab;
 711                                         __le16 timeout;
 712                                         __le16 start_seq_num;
 713                                 } __attribute__((packed)) addba_req;
 714                                 struct{
 715                                         u8 action_code;
 716                                         u8 dialog_token;
 717                                         __le16 status;
 718                                         __le16 capab;
 719                                         __le16 timeout;
 720                                 } __attribute__((packed)) addba_resp;
 721                                 struct{
 722                                         u8 action_code;
 723                                         __le16 params;
 724                                         __le16 reason_code;
 725                                 } __attribute__((packed)) delba;
 726                                 struct{
 727                                         u8 action_code;
 728                                         /* capab_info for open and confirm,
 729                                          * reason for close
 730                                          */
 731                                         __le16 aux;
 732                                         /* Followed in plink_confirm by status
 733                                          * code, AID and supported rates,
 734                                          * and directly by supported rates in
 735                                          * plink_open and plink_close
 736                                          */
 737                                         u8 variable[0];
 738                                 } __attribute__((packed)) plink_action;
 739                                 struct{
 740                                         u8 action_code;
 741                                         u8 variable[0];
 742                                 } __attribute__((packed)) mesh_action;
 743                                 struct {
 744                                         u8 action;
 745                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 746                                 } __attribute__ ((packed)) sa_query;
 747                                 struct {
 748                                         u8 action;
 749                                         u8 smps_control;
 750                                 } __attribute__ ((packed)) ht_smps;
 751                         } u;
 752                 } __attribute__ ((packed)) action;
 753         } u;
 754 } __attribute__ ((packed));
 755
 756 /* mgmt header + 1 byte category code */
 757 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 758
 759
 760 /* Management MIC information element (IEEE 802.11w) */
 761 struct ieee80211_mmie {
 762         u8 element_id;
 763         u8 length;
 764         __le16 key_id;
 765         u8 sequence_number[6];
 766         u8 mic[8];
 767 } __attribute__ ((packed));
 768
 769 /* Control frames */
 770 struct ieee80211_rts {
 771         __le16 frame_control;
 772         __le16 duration;
 773         u8 ra[6];
 774         u8 ta[6];
 775 } __attribute__ ((packed));
 776
 777 struct ieee80211_cts {
 778         __le16 frame_control;
 779         __le16 duration;
 780         u8 ra[6];
 781 } __attribute__ ((packed));
 782
 783 struct ieee80211_pspoll {
 784         __le16 frame_control;
 785         __le16 aid;
 786         u8 bssid[6];
 787         u8 ta[6];
 788 } __attribute__ ((packed));
 789
 790 /**
 791  * struct ieee80211_bar - HT Block Ack Request
 792  *
 793  * This structure refers to "HT BlockAckReq" as
 794  * described in 802.11n draft section 7.2.1.7.1
 795  */
 796 struct ieee80211_bar {
 797         __le16 frame_control;
 798         __le16 duration;
 799         __u8 ra[6];
 800         __u8 ta[6];
 801         __le16 control;
 802         __le16 start_seq_num;
 803 } __attribute__((packed)) __aligned(4);
 804
 805 /* 802.11 BA(R) control masks */
 806 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL     0x0000
 807 #define IEEE80211_BAR_CTRL_MULTI_TID             0x0002
 808 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA  0x0004
 809
 810 /**
 811  * struct ieee80211_ba - HT Block Ack
 812  *
 813  * This structure refers to "HT BlockAck" as
 814  * described in 802.11n draft section 7.2.1.8.1
 815  */
 816 struct ieee80211_ba {
 817         __le16 frame_control;
 818         __le16 duration;
 819         u8 ra[6];
 820         u8 ta[6];
 821         __le16 control;
 822
 823         __le16 start_seq_num;
 824         u8 bitmap[8];
 825 } __attribute__((packed));
 826
 827 #define IEEE80211_HT_MCS_MASK_LEN               10
 828
 829 /**
 830  * struct ieee80211_mcs_info - MCS information
 831  * @rx_mask: RX mask
 832  * @rx_highest: highest supported RX rate. If set represents
 833  *      the highest supported RX data rate in units of 1 Mbps.
 834  *      If this field is 0 this value should not be used to
 835  *      consider the highest RX data rate supported.
 836  * @tx_params: TX parameters
 837  */
 838 struct ieee80211_mcs_info {
 839         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 840         __le16 rx_highest;
 841         u8 tx_params;
 842         u8 reserved[3];
 843 } __attribute__((packed));
 844
 845 /* 802.11n HT capability MSC set */
 846 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 847 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 848 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 849 /* value 0 == 1 stream etc */
 850 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 851 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 852 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 853 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 854
 855 /*
 856  * 802.11n D5.0 20.3.5 / 20.6 says:
 857  * - indices 0 to 7 and 32 are single spatial stream
 858  * - 8 to 31 are multiple spatial streams using equal modulation
 859  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 860  * - remainder are multiple spatial streams using unequal modulation
 861  */
 862 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 863 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 864         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 865
 866 /**
 867  * struct ieee80211_ht_cap - HT capabilities
 868  *
 869  * This structure is the "HT capabilities element" as
 870  * described in 802.11n D5.0 7.3.2.57
 871  */
 872 struct ieee80211_ht_cap {
 873         __le16 cap_info;
 874         u8 ampdu_params_info;
 875
 876         /* 16 bytes MCS information */
 877         struct ieee80211_mcs_info mcs;
 878
 879         __le16 extended_ht_cap_info;
 880         __le32 tx_BF_cap_info;
 881         u8 antenna_selection_info;
 882 } __attribute__ ((packed));
 883
 884 /* 802.11n HT capabilities masks (for cap_info) */
 885 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 886 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 887 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 888 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 889 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 890 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 891 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 892 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 893 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 894 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 895 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 896 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 897 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 898 #define IEEE80211_HT_CAP_RESERVED               0x2000
 899 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 900 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 901
 902 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 903 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 904 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 905 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 906
 907 /*
 908  * Maximum length of AMPDU that the STA can receive.
 909  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 910  */
 911 enum ieee80211_max_ampdu_length_exp {
 912         IEEE80211_HT_MAX_AMPDU_8K = 0,
 913         IEEE80211_HT_MAX_AMPDU_16K = 1,
 914         IEEE80211_HT_MAX_AMPDU_32K = 2,
 915         IEEE80211_HT_MAX_AMPDU_64K = 3
 916 };
 917
 918 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 919
 920 /* Minimum MPDU start spacing */
 921 enum ieee80211_min_mpdu_spacing {
 922         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
 923         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
 924         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
 925         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
 926         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
 927         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
 928         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
 929         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
 930 };
 931
 932 /**
 933  * struct ieee80211_ht_info - HT information
 934  *
 935  * This structure is the "HT information element" as
 936  * described in 802.11n D5.0 7.3.2.58
 937  */
 938 struct ieee80211_ht_info {
 939         u8 control_chan;
 940         u8 ht_param;
 941         __le16 operation_mode;
 942         __le16 stbc_param;
 943         u8 basic_set[16];
 944 } __attribute__ ((packed));
 945
 946 /* for ht_param */
 947 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
 948 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
 949 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
 950 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
 951 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
 952 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
 953 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
 954 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
 955
 956 /* for operation_mode */
 957 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
 958 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
 959 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
 960 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
 961 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
 962 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
 963 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
 964
 965 /* for stbc_param */
 966 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
 967 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
 968 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
 969 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
 970 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
 971 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
 972
 973
 974 /* block-ack parameters */
 975 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
 976 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
 977 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
 978 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
 979 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
 980
 981 /*
 982  * A-PMDU buffer sizes
 983  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
 984  */
 985 #define IEEE80211_MIN_AMPDU_BUF 0x8
 986 #define IEEE80211_MAX_AMPDU_BUF 0x40
 987
 988
 989 /* Spatial Multiplexing Power Save Modes (for capability) */
 990 #define WLAN_HT_CAP_SM_PS_STATIC        0
 991 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
 992 #define WLAN_HT_CAP_SM_PS_INVALID       2
 993 #define WLAN_HT_CAP_SM_PS_DISABLED      3
 994
 995 /* for SM power control field lower two bits */
 996 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
 997 #define WLAN_HT_SMPS_CONTROL_STATIC     1
 998 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
 999
1000 /* Authentication algorithms */
1001 #define WLAN_AUTH_OPEN 0
1002 #define WLAN_AUTH_SHARED_KEY 1
1003 #define WLAN_AUTH_FT 2
1004 #define WLAN_AUTH_SAE 3
1005 #define WLAN_AUTH_LEAP 128
1006
1007 #define WLAN_AUTH_CHALLENGE_LEN 128
1008
1009 #define WLAN_CAPABILITY_ESS             (1<<0)
1010 #define WLAN_CAPABILITY_IBSS            (1<<1)
1011 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1012 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1013 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1014 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1015 #define WLAN_CAPABILITY_PBCC            (1<<6)
1016 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1017
1018 /* 802.11h */
1019 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1020 #define WLAN_CAPABILITY_QOS             (1<<9)
1021 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1022 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1023 /* measurement */
1024 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1025 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1026 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1027
1028 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1029 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1030 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1031
1032
1033 /* 802.11g ERP information element */
1034 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1035 #define WLAN_ERP_USE_PROTECTION (1<<1)
1036 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1037
1038 /* WLAN_ERP_BARKER_PREAMBLE values */
1039 enum {
1040         WLAN_ERP_PREAMBLE_SHORT = 0,
1041         WLAN_ERP_PREAMBLE_LONG = 1,
1042 };
1043
1044 /* Status codes */
1045 enum ieee80211_statuscode {
1046         WLAN_STATUS_SUCCESS = 0,
1047         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1048         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1049         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1050         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1051         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1052         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1053         WLAN_STATUS_CHALLENGE_FAIL = 15,
1054         WLAN_STATUS_AUTH_TIMEOUT = 16,
1055         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1056         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1057         /* 802.11b */
1058         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1059         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1060         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1061         /* 802.11h */
1062         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1063         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1064         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1065         /* 802.11g */
1066         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1067         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1068         /* 802.11w */
1069         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1070         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1071         /* 802.11i */
1072         WLAN_STATUS_INVALID_IE = 40,
1073         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1074         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1075         WLAN_STATUS_INVALID_AKMP = 43,
1076         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1077         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1078         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1079         /* 802.11e */
1080         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1081         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1082         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1083         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1084         WLAN_STATUS_REQUEST_DECLINED = 37,
1085         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1086         WLAN_STATUS_CHANGE_TSPEC = 39,
1087         WLAN_STATUS_WAIT_TS_DELAY = 47,
1088         WLAN_STATUS_NO_DIRECT_LINK = 48,
1089         WLAN_STATUS_STA_NOT_PRESENT = 49,
1090         WLAN_STATUS_STA_NOT_QSTA = 50,
1091         /* 802.11s */
1092         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1093         WLAN_STATUS_FCG_NOT_SUPP = 78,
1094         WLAN_STATUS_STA_NO_TBTT = 78,
1095 };
1096
1097
1098 /* Reason codes */
1099 enum ieee80211_reasoncode {
1100         WLAN_REASON_UNSPECIFIED = 1,
1101         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1102         WLAN_REASON_DEAUTH_LEAVING = 3,
1103         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1104         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1105         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1106         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1107         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1108         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1109         /* 802.11h */
1110         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1111         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1112         /* 802.11i */
1113         WLAN_REASON_INVALID_IE = 13,
1114         WLAN_REASON_MIC_FAILURE = 14,
1115         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1116         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1117         WLAN_REASON_IE_DIFFERENT = 17,
1118         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1119         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1120         WLAN_REASON_INVALID_AKMP = 20,
1121         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1122         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1123         WLAN_REASON_IEEE8021X_FAILED = 23,
1124         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1125         /* 802.11e */
1126         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1127         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1128         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1129         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1130         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1131         WLAN_REASON_QSTA_NOT_USE = 37,
1132         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1133         WLAN_REASON_QSTA_TIMEOUT = 39,
1134         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1135         /* 802.11s */
1136         WLAN_REASON_MESH_PEER_CANCELED = 52,
1137         WLAN_REASON_MESH_MAX_PEERS = 53,
1138         WLAN_REASON_MESH_CONFIG = 54,
1139         WLAN_REASON_MESH_CLOSE = 55,
1140         WLAN_REASON_MESH_MAX_RETRIES = 56,
1141         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1142         WLAN_REASON_MESH_INVALID_GTK = 58,
1143         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1144         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1145         WLAN_REASON_MESH_PATH_ERROR = 61,
1146         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1147         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1148         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1149         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1150         WLAN_REASON_MESH_CHAN = 66,
1151 };
1152
1153
1154 /* Information Element IDs */
1155 enum ieee80211_eid {
1156         WLAN_EID_SSID = 0,
1157         WLAN_EID_SUPP_RATES = 1,
1158         WLAN_EID_FH_PARAMS = 2,
1159         WLAN_EID_DS_PARAMS = 3,
1160         WLAN_EID_CF_PARAMS = 4,
1161         WLAN_EID_TIM = 5,
1162         WLAN_EID_IBSS_PARAMS = 6,
1163         WLAN_EID_CHALLENGE = 16,
1164
1165         WLAN_EID_COUNTRY = 7,
1166         WLAN_EID_HP_PARAMS = 8,
1167         WLAN_EID_HP_TABLE = 9,
1168         WLAN_EID_REQUEST = 10,
1169
1170         WLAN_EID_QBSS_LOAD = 11,
1171         WLAN_EID_EDCA_PARAM_SET = 12,
1172         WLAN_EID_TSPEC = 13,
1173         WLAN_EID_TCLAS = 14,
1174         WLAN_EID_SCHEDULE = 15,
1175         WLAN_EID_TS_DELAY = 43,
1176         WLAN_EID_TCLAS_PROCESSING = 44,
1177         WLAN_EID_QOS_CAPA = 46,
1178         /* 802.11s */
1179         WLAN_EID_MESH_CONFIG = 113,
1180         WLAN_EID_MESH_ID = 114,
1181         WLAN_EID_LINK_METRIC_REPORT = 115,
1182         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1183         /* Note that the Peer Link IE has been replaced with the similar
1184          * Peer Management IE.  We will keep the former definition until mesh
1185          * code is changed to comply with latest 802.11s drafts.
1186          */
1187         WLAN_EID_PEER_LINK = 55,  /* no longer in 802.11s drafts */
1188         WLAN_EID_PEER_MGMT = 117,
1189         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1190         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1191         WLAN_EID_BEACON_TIMING = 120,
1192         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1193         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1194         WLAN_EID_MCCAOP_ADVERT = 123,
1195         WLAN_EID_MCCAOP_TEARDOWN = 124,
1196         WLAN_EID_GANN = 125,
1197         WLAN_EID_RANN = 126,
1198         WLAN_EID_PREQ = 130,
1199         WLAN_EID_PREP = 131,
1200         WLAN_EID_PERR = 132,
1201         WLAN_EID_PXU = 137,
1202         WLAN_EID_PXUC = 138,
1203         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1204         WLAN_EID_MIC = 140,
1205
1206         WLAN_EID_PWR_CONSTRAINT = 32,
1207         WLAN_EID_PWR_CAPABILITY = 33,
1208         WLAN_EID_TPC_REQUEST = 34,
1209         WLAN_EID_TPC_REPORT = 35,
1210         WLAN_EID_SUPPORTED_CHANNELS = 36,
1211         WLAN_EID_CHANNEL_SWITCH = 37,
1212         WLAN_EID_MEASURE_REQUEST = 38,
1213         WLAN_EID_MEASURE_REPORT = 39,
1214         WLAN_EID_QUIET = 40,
1215         WLAN_EID_IBSS_DFS = 41,
1216
1217         WLAN_EID_ERP_INFO = 42,
1218         WLAN_EID_EXT_SUPP_RATES = 50,
1219
1220         WLAN_EID_HT_CAPABILITY = 45,
1221         WLAN_EID_HT_INFORMATION = 61,
1222
1223         WLAN_EID_RSN = 48,
1224         WLAN_EID_MMIE = 76,
1225         WLAN_EID_WPA = 221,
1226         WLAN_EID_GENERIC = 221,
1227         WLAN_EID_VENDOR_SPECIFIC = 221,
1228         WLAN_EID_QOS_PARAMETER = 222,
1229
1230         WLAN_EID_AP_CHAN_REPORT = 51,
1231         WLAN_EID_NEIGHBOR_REPORT = 52,
1232         WLAN_EID_RCPI = 53,
1233         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1234         WLAN_EID_ANTENNA_INFO = 64,
1235         WLAN_EID_RSNI = 65,
1236         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1237         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1238         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1239         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1240         WLAN_EID_MULTIPLE_BSSID = 71,
1241         WLAN_EID_BSS_COEX_2040 = 72,
1242         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1243         WLAN_EID_EXT_CAPABILITY = 127,
1244
1245         WLAN_EID_MOBILITY_DOMAIN = 54,
1246         WLAN_EID_FAST_BSS_TRANSITION = 55,
1247         WLAN_EID_TIMEOUT_INTERVAL = 56,
1248         WLAN_EID_RIC_DATA = 57,
1249         WLAN_EID_RIC_DESCRIPTOR = 75,
1250
1251         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1252         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1253         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1254 };
1255
1256 /* Action category code */
1257 enum ieee80211_category {
1258         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1259         WLAN_CATEGORY_QOS = 1,
1260         WLAN_CATEGORY_DLS = 2,
1261         WLAN_CATEGORY_BACK = 3,
1262         WLAN_CATEGORY_PUBLIC = 4,
1263         WLAN_CATEGORY_HT = 7,
1264         WLAN_CATEGORY_SA_QUERY = 8,
1265         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1266         WLAN_CATEGORY_MESH_ACTION = 13,
1267         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1268         WLAN_CATEGORY_SELF_PROTECTED = 15,
1269         WLAN_CATEGORY_WMM = 17,
1270         /* TODO: remove MESH_PLINK and MESH_PATH_SEL after */
1271         /*       mesh is updated to current 802.11s draft  */
1272         WLAN_CATEGORY_MESH_PLINK = 30,
1273         WLAN_CATEGORY_MESH_PATH_SEL = 32,
1274         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1275         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1276 };
1277
1278 /* SPECTRUM_MGMT action code */
1279 enum ieee80211_spectrum_mgmt_actioncode {
1280         WLAN_ACTION_SPCT_MSR_REQ = 0,
1281         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1282         WLAN_ACTION_SPCT_TPC_REQ = 2,
1283         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1284         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1285 };
1286
1287 /* HT action codes */
1288 enum ieee80211_ht_actioncode {
1289         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1290         WLAN_HT_ACTION_SMPS = 1,
1291         WLAN_HT_ACTION_PSMP = 2,
1292         WLAN_HT_ACTION_PCO_PHASE = 3,
1293         WLAN_HT_ACTION_CSI = 4,
1294         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1295         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1296         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1297 };
1298
1299 /* Security key length */
1300 enum ieee80211_key_len {
1301         WLAN_KEY_LEN_WEP40 = 5,
1302         WLAN_KEY_LEN_WEP104 = 13,
1303         WLAN_KEY_LEN_CCMP = 16,
1304         WLAN_KEY_LEN_TKIP = 32,
1305         WLAN_KEY_LEN_AES_CMAC = 16,
1306 };
1307
1308 /**
1309  * enum - mesh path selection protocol identifier
1310  *
1311  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1312  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1313  * be specified in a vendor specific information element
1314  */
1315 enum {
1316         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1317         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1318 };
1319
1320 /**
1321  * enum - mesh path selection metric identifier
1322  *
1323  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1324  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1325  * specified in a vendor specific information element
1326  */
1327 enum {
1328         IEEE80211_PATH_METRIC_AIRTIME = 0,
1329         IEEE80211_PATH_METRIC_VENDOR = 255,
1330 };
1331
1332
1333 /*
1334  * IEEE 802.11-2007 7.3.2.9 Country information element
1335  *
1336  * Minimum length is 8 octets, ie len must be evenly
1337  * divisible by 2
1338  */
1339
1340 /* Although the spec says 8 I'm seeing 6 in practice */
1341 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1342
1343 /*
1344  * For regulatory extension stuff see IEEE 802.11-2007
1345  * Annex I (page 1141) and Annex J (page 1147). Also
1346  * review 7.3.2.9.
1347  *
1348  * When dot11RegulatoryClassesRequired is true and the
1349  * first_channel/reg_extension_id is >= 201 then the IE
1350  * compromises of the 'ext' struct represented below:
1351  *
1352  *  - Regulatory extension ID - when generating IE this just needs
1353  *    to be monotonically increasing for each triplet passed in
1354  *    the IE
1355  *  - Regulatory class - index into set of rules
1356  *  - Coverage class - index into air propagation time (Table 7-27),
1357  *    in microseconds, you can compute the air propagation time from
1358  *    the index by multiplying by 3, so index 10 yields a propagation
1359  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1360  *    yet. A value of 0 inicates air propagation of <= 1 us.
1361  *
1362  *  See also Table I.2 for Emission limit sets and table
1363  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1364  *  a reg_class to an emission limit set and behavior limit set.
1365  */
1366 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1367
1368 /*
1369  *  Channels numbers in the IE must be monotonically increasing
1370  *  if dot11RegulatoryClassesRequired is not true.
1371  *
1372  *  If dot11RegulatoryClassesRequired is true consecutive
1373  *  subband triplets following a regulatory triplet shall
1374  *  have monotonically increasing first_channel number fields.
1375  *
1376  *  Channel numbers shall not overlap.
1377  *
1378  *  Note that max_power is signed.
1379  */
1380 struct ieee80211_country_ie_triplet {
1381         union {
1382                 struct {
1383                         u8 first_channel;
1384                         u8 num_channels;
1385                         s8 max_power;
1386                 } __attribute__ ((packed)) chans;
1387                 struct {
1388                         u8 reg_extension_id;
1389                         u8 reg_class;
1390                         u8 coverage_class;
1391                 } __attribute__ ((packed)) ext;
1392         };
1393 } __attribute__ ((packed));
1394
1395 enum ieee80211_timeout_interval_type {
1396         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1397         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1398         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1399 };
1400
1401 /* BACK action code */
1402 enum ieee80211_back_actioncode {
1403         WLAN_ACTION_ADDBA_REQ = 0,
1404         WLAN_ACTION_ADDBA_RESP = 1,
1405         WLAN_ACTION_DELBA = 2,
1406 };
1407
1408 /* BACK (block-ack) parties */
1409 enum ieee80211_back_parties {
1410         WLAN_BACK_RECIPIENT = 0,
1411         WLAN_BACK_INITIATOR = 1,
1412 };
1413
1414 /* SA Query action */
1415 enum ieee80211_sa_query_action {
1416         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1417         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1418 };
1419
1420
1421 /* A-MSDU 802.11n */
1422 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1423
1424 /* cipher suite selectors */
1425 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1426 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1427 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1428 /* reserved:                            0x000FAC03 */
1429 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1430 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1431 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1432
1433 /* AKM suite selectors */
1434 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1435 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1436 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1437 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1438
1439 #define WLAN_MAX_KEY_LEN                32
1440
1441 #define WLAN_PMKID_LEN                  16
1442
1443 /**
1444  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1445  * @hdr: the frame
1446  *
1447  * The qos ctrl bytes come after the frame_control, duration, seq_num
1448  * and 3 or 4 addresses of length ETH_ALEN.
1449  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1450  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1451  */
1452 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1453 {
1454         if (ieee80211_has_a4(hdr->frame_control))
1455                 return (u8 *)hdr + 30;
1456         else
1457                 return (u8 *)hdr + 24;
1458 }
1459
1460 /**
1461  * ieee80211_get_SA - get pointer to SA
1462  * @hdr: the frame
1463  *
1464  * Given an 802.11 frame, this function returns the offset
1465  * to the source address (SA). It does not verify that the
1466  * header is long enough to contain the address, and the
1467  * header must be long enough to contain the frame control
1468  * field.
1469  */
1470 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1471 {
1472         if (ieee80211_has_a4(hdr->frame_control))
1473                 return hdr->addr4;
1474         if (ieee80211_has_fromds(hdr->frame_control))
1475                 return hdr->addr3;
1476         return hdr->addr2;
1477 }
1478
1479 /**
1480  * ieee80211_get_DA - get pointer to DA
1481  * @hdr: the frame
1482  *
1483  * Given an 802.11 frame, this function returns the offset
1484  * to the destination address (DA). It does not verify that
1485  * the header is long enough to contain the address, and the
1486  * header must be long enough to contain the frame control
1487  * field.
1488  */
1489 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1490 {
1491         if (ieee80211_has_tods(hdr->frame_control))
1492                 return hdr->addr3;
1493         else
1494                 return hdr->addr1;
1495 }
1496
1497 /**
1498  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1499  * @hdr: the frame (buffer must include at least the first octet of payload)
1500  */
1501 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1502 {
1503         if (ieee80211_is_disassoc(hdr->frame_control) ||
1504             ieee80211_is_deauth(hdr->frame_control))
1505                 return true;
1506
1507         if (ieee80211_is_action(hdr->frame_control)) {
1508                 u8 *category;
1509
1510                 /*
1511                  * Action frames, excluding Public Action frames, are Robust
1512                  * Management Frames. However, if we are looking at a Protected
1513                  * frame, skip the check since the data may be encrypted and
1514                  * the frame has already been found to be a Robust Management
1515                  * Frame (by the other end).
1516                  */
1517                 if (ieee80211_has_protected(hdr->frame_control))
1518                         return true;
1519                 category = ((u8 *) hdr) + 24;
1520                 return *category != WLAN_CATEGORY_PUBLIC &&
1521                         *category != WLAN_CATEGORY_HT &&
1522                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1523         }
1524
1525         return false;
1526 }
1527
1528 /**
1529  * ieee80211_fhss_chan_to_freq - get channel frequency
1530  * @channel: the FHSS channel
1531  *
1532  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1533  * Ref IEEE 802.11-2007 section 14.6
1534  */
1535 static inline int ieee80211_fhss_chan_to_freq(int channel)
1536 {
1537         if ((channel > 1) && (channel < 96))
1538                 return channel + 2400;
1539         else
1540                 return -1;
1541 }
1542
1543 /**
1544  * ieee80211_freq_to_fhss_chan - get channel
1545  * @freq: the channels frequency
1546  *
1547  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1548  * Ref IEEE 802.11-2007 section 14.6
1549  */
1550 static inline int ieee80211_freq_to_fhss_chan(int freq)
1551 {
1552         if ((freq > 2401) && (freq < 2496))
1553                 return freq - 2400;
1554         else
1555                 return -1;
1556 }
1557
1558 /**
1559  * ieee80211_dsss_chan_to_freq - get channel center frequency
1560  * @channel: the DSSS channel
1561  *
1562  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1563  * Ref IEEE 802.11-2007 section 15.6
1564  */
1565 static inline int ieee80211_dsss_chan_to_freq(int channel)
1566 {
1567         if ((channel > 0) && (channel < 14))
1568                 return 2407 + (channel * 5);
1569         else if (channel == 14)
1570                 return 2484;
1571         else
1572                 return -1;
1573 }
1574
1575 /**
1576  * ieee80211_freq_to_dsss_chan - get channel
1577  * @freq: the frequency
1578  *
1579  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1580  * Ref IEEE 802.11-2007 section 15.6
1581  *
1582  * This routine selects the channel with the closest center frequency.
1583  */
1584 static inline int ieee80211_freq_to_dsss_chan(int freq)
1585 {
1586         if ((freq >= 2410) && (freq < 2475))
1587                 return (freq - 2405) / 5;
1588         else if ((freq >= 2482) && (freq < 2487))
1589                 return 14;
1590         else
1591                 return -1;
1592 }
1593
1594 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1595  * Ref IEEE 802.11-2007 section 18.4.6.2
1596  *
1597  * The channels and frequencies are the same as those defined for DSSS
1598  */
1599 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1600 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1601
1602 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1603  * Ref IEEE 802.11-2007 section 19.4.2
1604  */
1605 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1606 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1607
1608 /**
1609  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1610  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1611  * @channel: the OFDM channel
1612  *
1613  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1614  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1615  */
1616 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1617 {
1618         if ((channel > 0) && (channel <= 200) &&
1619             (s_freq >= 4000))
1620                 return s_freq + (channel * 5);
1621         else
1622                 return -1;
1623 }
1624
1625 /**
1626  * ieee80211_freq_to_ofdm_channel - get channel
1627  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1628  * @freq: the frequency
1629  *
1630  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1631  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1632  *
1633  * This routine selects the channel with the closest center frequency.
1634  */
1635 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1636 {
1637         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1638             (s_freq >= 4000))
1639                 return (freq + 2 - s_freq) / 5;
1640         else
1641                 return -1;
1642 }
1643
1644 /**
1645  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1646  * @tu: the TUs
1647  */
1648 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1649 {
1650         return 1024 * tu;
1651 }
1652
1653 /**
1654  * ieee80211_check_tim - check if AID bit is set in TIM
1655  * @tim: the TIM IE
1656  * @tim_len: length of the TIM IE
1657  * @aid: the AID to look for
1658  */
1659 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1660                                        u8 tim_len, u16 aid)
1661 {
1662         u8 mask;
1663         u8 indexn0, indexn1, indexn2;
1664
1665         if (unlikely(!tim || tim_len < sizeof(*tim)))
1666                 return false;
1667
1668         aid &= 0x3fff;
1669         indexn0 = aid / 8;
1670         mask  = 1 << (aid & 7);
1671
1672         indexn1 = tim->bitmap_ctrl & 0xfe;
1673         indexn2 = tim_len + indexn1 - 4;
1674
1675         if (indexn0 < indexn1 || indexn0 > indexn2)
1676                 return false;
1677
1678         indexn0 -= indexn1;
1679
1680         return !!(tim->virtual_map[indexn0] & mask);
1681 }
1682
1683 #endif /* __LINUX_IEEE80211_H */