include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef __LINUX_IEEE80211_H
  16 #define __LINUX_IEEE80211_H
  17
  18 /*
  19  * DS bit usage
  20  *
  21  * TA = transmitter address
  22  * RA = receiver address
  23  * DA = destination address
  24  * SA = source address
  25  *
  26  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  27  * -----------------------------------------------------------------
  28  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  29  *  0       1       DA      BSSID   SA      -       AP -> STA
  30  *  1       0       BSSID   SA      DA      -       AP <- STA
  31  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  32  */
  33
  34 #define FCS_LEN 4
  35
  36 #define IEEE80211_FCTL_VERS             0x0003
  37 #define IEEE80211_FCTL_FTYPE            0x000c
  38 #define IEEE80211_FCTL_STYPE            0x00f0
  39 #define IEEE80211_FCTL_TODS             0x0100
  40 #define IEEE80211_FCTL_FROMDS           0x0200
  41 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  42 #define IEEE80211_FCTL_RETRY            0x0800
  43 #define IEEE80211_FCTL_PM               0x1000
  44 #define IEEE80211_FCTL_MOREDATA         0x2000
  45 #define IEEE80211_FCTL_PROTECTED        0x4000
  46 #define IEEE80211_FCTL_ORDER            0x8000
  47 #define IEEE80211_FCTL_CTL_EXT          0x0f00
  48
  49 #define IEEE80211_SCTL_FRAG             0x000F
  50 #define IEEE80211_SCTL_SEQ              0xFFF0
  51
  52 #define IEEE80211_FTYPE_MGMT            0x0000
  53 #define IEEE80211_FTYPE_CTL             0x0004
  54 #define IEEE80211_FTYPE_DATA            0x0008
  55 #define IEEE80211_FTYPE_EXT             0x000c
  56
  57 /* management */
  58 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  59 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  60 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  61 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  62 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  63 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  64 #define IEEE80211_STYPE_BEACON          0x0080
  65 #define IEEE80211_STYPE_ATIM            0x0090
  66 #define IEEE80211_STYPE_DISASSOC        0x00A0
  67 #define IEEE80211_STYPE_AUTH            0x00B0
  68 #define IEEE80211_STYPE_DEAUTH          0x00C0
  69 #define IEEE80211_STYPE_ACTION          0x00D0
  70
  71 /* control */
  72 #define IEEE80211_STYPE_CTL_EXT         0x0060
  73 #define IEEE80211_STYPE_BACK_REQ        0x0080
  74 #define IEEE80211_STYPE_BACK            0x0090
  75 #define IEEE80211_STYPE_PSPOLL          0x00A0
  76 #define IEEE80211_STYPE_RTS             0x00B0
  77 #define IEEE80211_STYPE_CTS             0x00C0
  78 #define IEEE80211_STYPE_ACK             0x00D0
  79 #define IEEE80211_STYPE_CFEND           0x00E0
  80 #define IEEE80211_STYPE_CFENDACK        0x00F0
  81
  82 /* data */
  83 #define IEEE80211_STYPE_DATA                    0x0000
  84 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  85 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  86 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  87 #define IEEE80211_STYPE_NULLFUNC                0x0040
  88 #define IEEE80211_STYPE_CFACK                   0x0050
  89 #define IEEE80211_STYPE_CFPOLL                  0x0060
  90 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  91 #define IEEE80211_STYPE_QOS_DATA                0x0080
  92 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  93 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  94 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  95 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  96 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  97 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  98 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  99
 100 /* extension, added by 802.11ad */
 101 #define IEEE80211_STYPE_DMG_BEACON              0x0000
 102
 103 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 104 #define IEEE80211_CTL_EXT_POLL          0x2000
 105 #define IEEE80211_CTL_EXT_SPR           0x3000
 106 #define IEEE80211_CTL_EXT_GRANT 0x4000
 107 #define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 108 #define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 109 #define IEEE80211_CTL_EXT_SSW           0x8000
 110 #define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 111 #define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 112
 113 /* miscellaneous IEEE 802.11 constants */
 114 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 115 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 116 #define IEEE80211_MAX_AID               2007
 117 #define IEEE80211_MAX_TIM_LEN           251
 118 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 119    6.2.1.1.2.
 120
 121    802.11e clarifies the figure in section 7.1.2. The frame body is
 122    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 123 #define IEEE80211_MAX_DATA_LEN          2304
 124 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 125 #define IEEE80211_MAX_FRAME_LEN         2352
 126
 127 #define IEEE80211_MAX_SSID_LEN          32
 128
 129 #define IEEE80211_MAX_MESH_ID_LEN       32
 130
 131 #define IEEE80211_NUM_TIDS              16
 132
 133 #define IEEE80211_QOS_CTL_LEN           2
 134 /* 1d tag mask */
 135 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 136 /* TID mask */
 137 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 138 /* EOSP */
 139 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 140 /* ACK policy */
 141 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 142 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 143 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 144 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 145 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 146 /* A-MSDU 802.11n */
 147 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 148 /* Mesh Control 802.11s */
 149 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 150
 151 /* U-APSD queue for WMM IEs sent by AP */
 152 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 153 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 154
 155 /* U-APSD queues for WMM IEs sent by STA */
 156 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 157 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 158 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 159 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 160 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 161
 162 /* U-APSD max SP length for WMM IEs sent by STA */
 163 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 164 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 165 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 166 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 167 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 168 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 169
 170 #define IEEE80211_HT_CTL_LEN            4
 171
 172 struct ieee80211_hdr {
 173         __le16 frame_control;
 174         __le16 duration_id;
 175         u8 addr1[6];
 176         u8 addr2[6];
 177         u8 addr3[6];
 178         __le16 seq_ctrl;
 179         u8 addr4[6];
 180 } __attribute__ ((packed));
 181
 182 struct ieee80211_hdr_3addr {
 183         __le16 frame_control;
 184         __le16 duration_id;
 185         u8 addr1[6];
 186         u8 addr2[6];
 187         u8 addr3[6];
 188         __le16 seq_ctrl;
 189 } __attribute__ ((packed));
 190
 191 struct ieee80211_qos_hdr {
 192         __le16 frame_control;
 193         __le16 duration_id;
 194         u8 addr1[6];
 195         u8 addr2[6];
 196         u8 addr3[6];
 197         __le16 seq_ctrl;
 198         __le16 qos_ctrl;
 199 } __attribute__ ((packed));
 200
 201 /**
 202  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 203  * @fc: frame control bytes in little-endian byteorder
 204  */
 205 static inline int ieee80211_has_tods(__le16 fc)
 206 {
 207         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 208 }
 209
 210 /**
 211  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 212  * @fc: frame control bytes in little-endian byteorder
 213  */
 214 static inline int ieee80211_has_fromds(__le16 fc)
 215 {
 216         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 217 }
 218
 219 /**
 220  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 221  * @fc: frame control bytes in little-endian byteorder
 222  */
 223 static inline int ieee80211_has_a4(__le16 fc)
 224 {
 225         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 226         return (fc & tmp) == tmp;
 227 }
 228
 229 /**
 230  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 231  * @fc: frame control bytes in little-endian byteorder
 232  */
 233 static inline int ieee80211_has_morefrags(__le16 fc)
 234 {
 235         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 236 }
 237
 238 /**
 239  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 240  * @fc: frame control bytes in little-endian byteorder
 241  */
 242 static inline int ieee80211_has_retry(__le16 fc)
 243 {
 244         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 245 }
 246
 247 /**
 248  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 249  * @fc: frame control bytes in little-endian byteorder
 250  */
 251 static inline int ieee80211_has_pm(__le16 fc)
 252 {
 253         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 254 }
 255
 256 /**
 257  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 258  * @fc: frame control bytes in little-endian byteorder
 259  */
 260 static inline int ieee80211_has_moredata(__le16 fc)
 261 {
 262         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 263 }
 264
 265 /**
 266  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 267  * @fc: frame control bytes in little-endian byteorder
 268  */
 269 static inline int ieee80211_has_protected(__le16 fc)
 270 {
 271         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 272 }
 273
 274 /**
 275  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 276  * @fc: frame control bytes in little-endian byteorder
 277  */
 278 static inline int ieee80211_has_order(__le16 fc)
 279 {
 280         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 281 }
 282
 283 /**
 284  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 285  * @fc: frame control bytes in little-endian byteorder
 286  */
 287 static inline int ieee80211_is_mgmt(__le16 fc)
 288 {
 289         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 290                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 291 }
 292
 293 /**
 294  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 295  * @fc: frame control bytes in little-endian byteorder
 296  */
 297 static inline int ieee80211_is_ctl(__le16 fc)
 298 {
 299         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 300                cpu_to_le16(IEEE80211_FTYPE_CTL);
 301 }
 302
 303 /**
 304  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 305  * @fc: frame control bytes in little-endian byteorder
 306  */
 307 static inline int ieee80211_is_data(__le16 fc)
 308 {
 309         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 310                cpu_to_le16(IEEE80211_FTYPE_DATA);
 311 }
 312
 313 /**
 314  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 315  * @fc: frame control bytes in little-endian byteorder
 316  */
 317 static inline int ieee80211_is_data_qos(__le16 fc)
 318 {
 319         /*
 320          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 321          * to check the one bit
 322          */
 323         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 324                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 325 }
 326
 327 /**
 328  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 329  * @fc: frame control bytes in little-endian byteorder
 330  */
 331 static inline int ieee80211_is_data_present(__le16 fc)
 332 {
 333         /*
 334          * mask with 0x40 and test that that bit is clear to only return true
 335          * for the data-containing substypes.
 336          */
 337         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 338                cpu_to_le16(IEEE80211_FTYPE_DATA);
 339 }
 340
 341 /**
 342  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 343  * @fc: frame control bytes in little-endian byteorder
 344  */
 345 static inline int ieee80211_is_assoc_req(__le16 fc)
 346 {
 347         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 348                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 349 }
 350
 351 /**
 352  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 353  * @fc: frame control bytes in little-endian byteorder
 354  */
 355 static inline int ieee80211_is_assoc_resp(__le16 fc)
 356 {
 357         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 358                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 359 }
 360
 361 /**
 362  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 363  * @fc: frame control bytes in little-endian byteorder
 364  */
 365 static inline int ieee80211_is_reassoc_req(__le16 fc)
 366 {
 367         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 368                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 369 }
 370
 371 /**
 372  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 373  * @fc: frame control bytes in little-endian byteorder
 374  */
 375 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 376 {
 377         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 378                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 379 }
 380
 381 /**
 382  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 383  * @fc: frame control bytes in little-endian byteorder
 384  */
 385 static inline int ieee80211_is_probe_req(__le16 fc)
 386 {
 387         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 388                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 389 }
 390
 391 /**
 392  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 393  * @fc: frame control bytes in little-endian byteorder
 394  */
 395 static inline int ieee80211_is_probe_resp(__le16 fc)
 396 {
 397         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 398                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 399 }
 400
 401 /**
 402  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 403  * @fc: frame control bytes in little-endian byteorder
 404  */
 405 static inline int ieee80211_is_beacon(__le16 fc)
 406 {
 407         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 408                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 409 }
 410
 411 /**
 412  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 413  * @fc: frame control bytes in little-endian byteorder
 414  */
 415 static inline int ieee80211_is_atim(__le16 fc)
 416 {
 417         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 418                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 419 }
 420
 421 /**
 422  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 423  * @fc: frame control bytes in little-endian byteorder
 424  */
 425 static inline int ieee80211_is_disassoc(__le16 fc)
 426 {
 427         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 428                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 429 }
 430
 431 /**
 432  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 433  * @fc: frame control bytes in little-endian byteorder
 434  */
 435 static inline int ieee80211_is_auth(__le16 fc)
 436 {
 437         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 438                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 439 }
 440
 441 /**
 442  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 443  * @fc: frame control bytes in little-endian byteorder
 444  */
 445 static inline int ieee80211_is_deauth(__le16 fc)
 446 {
 447         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 448                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 449 }
 450
 451 /**
 452  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 453  * @fc: frame control bytes in little-endian byteorder
 454  */
 455 static inline int ieee80211_is_action(__le16 fc)
 456 {
 457         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 458                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 459 }
 460
 461 /**
 462  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 463  * @fc: frame control bytes in little-endian byteorder
 464  */
 465 static inline int ieee80211_is_back_req(__le16 fc)
 466 {
 467         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 468                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 469 }
 470
 471 /**
 472  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 473  * @fc: frame control bytes in little-endian byteorder
 474  */
 475 static inline int ieee80211_is_back(__le16 fc)
 476 {
 477         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 478                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 479 }
 480
 481 /**
 482  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 483  * @fc: frame control bytes in little-endian byteorder
 484  */
 485 static inline int ieee80211_is_pspoll(__le16 fc)
 486 {
 487         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 488                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 489 }
 490
 491 /**
 492  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 493  * @fc: frame control bytes in little-endian byteorder
 494  */
 495 static inline int ieee80211_is_rts(__le16 fc)
 496 {
 497         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 498                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 499 }
 500
 501 /**
 502  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 503  * @fc: frame control bytes in little-endian byteorder
 504  */
 505 static inline int ieee80211_is_cts(__le16 fc)
 506 {
 507         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 508                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 509 }
 510
 511 /**
 512  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 513  * @fc: frame control bytes in little-endian byteorder
 514  */
 515 static inline int ieee80211_is_ack(__le16 fc)
 516 {
 517         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 518                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 519 }
 520
 521 /**
 522  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 523  * @fc: frame control bytes in little-endian byteorder
 524  */
 525 static inline int ieee80211_is_cfend(__le16 fc)
 526 {
 527         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 528                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 529 }
 530
 531 /**
 532  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 533  * @fc: frame control bytes in little-endian byteorder
 534  */
 535 static inline int ieee80211_is_cfendack(__le16 fc)
 536 {
 537         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 538                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 539 }
 540
 541 /**
 542  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 543  * @fc: frame control bytes in little-endian byteorder
 544  */
 545 static inline int ieee80211_is_nullfunc(__le16 fc)
 546 {
 547         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 548                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 549 }
 550
 551 /**
 552  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 553  * @fc: frame control bytes in little-endian byteorder
 554  */
 555 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 556 {
 557         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 558                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 559 }
 560
 561 static inline unsigned int ieee80211_hdrlen(__le16 fc)
 562 {
 563         unsigned int hdrlen = 24;
 564
 565         if (ieee80211_has_a4(fc))
 566                 hdrlen = 30;
 567
 568         if (ieee80211_is_data_qos(fc)) {
 569                 hdrlen += IEEE80211_QOS_CTL_LEN;
 570                 if (ieee80211_has_order(fc))
 571                         hdrlen += IEEE80211_HT_CTL_LEN;
 572         }
 573
 574         return hdrlen;
 575 }
 576
 577 /**
 578  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 579  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 580  */
 581 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 582 {
 583         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 584 }
 585
 586 struct ieee80211s_hdr {
 587         u8 flags;
 588         u8 ttl;
 589         __le32 seqnum;
 590         u8 eaddr1[6];
 591         u8 eaddr2[6];
 592 } __attribute__ ((packed));
 593
 594 /* Mesh flags */
 595 #define MESH_FLAGS_AE_A4        0x1
 596 #define MESH_FLAGS_AE_A5_A6     0x2
 597 #define MESH_FLAGS_AE           0x3
 598 #define MESH_FLAGS_PS_DEEP      0x4
 599
 600 /**
 601  * enum ieee80211_preq_flags - mesh PREQ element flags
 602  *
 603  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 604  */
 605 enum ieee80211_preq_flags {
 606         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 607 };
 608
 609 /**
 610  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 611  *
 612  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 613  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 614  */
 615 enum ieee80211_preq_target_flags {
 616         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 617         IEEE80211_PREQ_USN_FLAG = 1<<2,
 618 };
 619
 620 /**
 621  * struct ieee80211_quiet_ie
 622  *
 623  * This structure refers to "Quiet information element"
 624  */
 625 struct ieee80211_quiet_ie {
 626         u8 count;
 627         u8 period;
 628         __le16 duration;
 629         __le16 offset;
 630 } __attribute__ ((packed));
 631
 632 /**
 633  * struct ieee80211_msrment_ie
 634  *
 635  * This structure refers to "Measurement Request/Report information element"
 636  */
 637 struct ieee80211_msrment_ie {
 638         u8 token;
 639         u8 mode;
 640         u8 type;
 641         u8 request[0];
 642 } __attribute__ ((packed));
 643
 644 /**
 645  * struct ieee80211_channel_sw_ie
 646  *
 647  * This structure refers to "Channel Switch Announcement information element"
 648  */
 649 struct ieee80211_channel_sw_ie {
 650         u8 mode;
 651         u8 new_ch_num;
 652         u8 count;
 653 } __attribute__ ((packed));
 654
 655 /**
 656  * struct ieee80211_tim
 657  *
 658  * This structure refers to "Traffic Indication Map information element"
 659  */
 660 struct ieee80211_tim_ie {
 661         u8 dtim_count;
 662         u8 dtim_period;
 663         u8 bitmap_ctrl;
 664         /* variable size: 1 - 251 bytes */
 665         u8 virtual_map[1];
 666 } __attribute__ ((packed));
 667
 668 /**
 669  * struct ieee80211_meshconf_ie
 670  *
 671  * This structure refers to "Mesh Configuration information element"
 672  */
 673 struct ieee80211_meshconf_ie {
 674         u8 meshconf_psel;
 675         u8 meshconf_pmetric;
 676         u8 meshconf_congest;
 677         u8 meshconf_synch;
 678         u8 meshconf_auth;
 679         u8 meshconf_form;
 680         u8 meshconf_cap;
 681 } __attribute__ ((packed));
 682
 683 /**
 684  * enum mesh_config_capab_flags - Mesh Configuration IE capability field flags
 685  *
 686  * @IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish
 687  *      additional mesh peerings with other mesh STAs
 688  * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs
 689  * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure
 690  *      is ongoing
 691  */
 692 enum mesh_config_capab_flags {
 693         IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS          = 0x01,
 694         IEEE80211_MESHCONF_CAPAB_FORWARDING             = 0x08,
 695         IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING         = 0x20,
 696 };
 697
 698 /**
 699  * struct ieee80211_rann_ie
 700  *
 701  * This structure refers to "Root Announcement information element"
 702  */
 703 struct ieee80211_rann_ie {
 704         u8 rann_flags;
 705         u8 rann_hopcount;
 706         u8 rann_ttl;
 707         u8 rann_addr[6];
 708         __le32 rann_seq;
 709         __le32 rann_interval;
 710         __le32 rann_metric;
 711 } __attribute__ ((packed));
 712
 713 enum ieee80211_rann_flags {
 714         RANN_FLAG_IS_GATE = 1 << 0,
 715 };
 716
 717 #define WLAN_SA_QUERY_TR_ID_LEN 2
 718
 719 struct ieee80211_mgmt {
 720         __le16 frame_control;
 721         __le16 duration;
 722         u8 da[6];
 723         u8 sa[6];
 724         u8 bssid[6];
 725         __le16 seq_ctrl;
 726         union {
 727                 struct {
 728                         __le16 auth_alg;
 729                         __le16 auth_transaction;
 730                         __le16 status_code;
 731                         /* possibly followed by Challenge text */
 732                         u8 variable[0];
 733                 } __attribute__ ((packed)) auth;
 734                 struct {
 735                         __le16 reason_code;
 736                 } __attribute__ ((packed)) deauth;
 737                 struct {
 738                         __le16 capab_info;
 739                         __le16 listen_interval;
 740                         /* followed by SSID and Supported rates */
 741                         u8 variable[0];
 742                 } __attribute__ ((packed)) assoc_req;
 743                 struct {
 744                         __le16 capab_info;
 745                         __le16 status_code;
 746                         __le16 aid;
 747                         /* followed by Supported rates */
 748                         u8 variable[0];
 749                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 750                 struct {
 751                         __le16 capab_info;
 752                         __le16 listen_interval;
 753                         u8 current_ap[6];
 754                         /* followed by SSID and Supported rates */
 755                         u8 variable[0];
 756                 } __attribute__ ((packed)) reassoc_req;
 757                 struct {
 758                         __le16 reason_code;
 759                 } __attribute__ ((packed)) disassoc;
 760                 struct {
 761                         __le64 timestamp;
 762                         __le16 beacon_int;
 763                         __le16 capab_info;
 764                         /* followed by some of SSID, Supported rates,
 765                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 766                         u8 variable[0];
 767                 } __attribute__ ((packed)) beacon;
 768                 struct {
 769                         /* only variable items: SSID, Supported rates */
 770                         u8 variable[0];
 771                 } __attribute__ ((packed)) probe_req;
 772                 struct {
 773                         __le64 timestamp;
 774                         __le16 beacon_int;
 775                         __le16 capab_info;
 776                         /* followed by some of SSID, Supported rates,
 777                          * FH Params, DS Params, CF Params, IBSS Params */
 778                         u8 variable[0];
 779                 } __attribute__ ((packed)) probe_resp;
 780                 struct {
 781                         u8 category;
 782                         union {
 783                                 struct {
 784                                         u8 action_code;
 785                                         u8 dialog_token;
 786                                         u8 status_code;
 787                                         u8 variable[0];
 788                                 } __attribute__ ((packed)) wme_action;
 789                                 struct{
 790                                         u8 action_code;
 791                                         u8 element_id;
 792                                         u8 length;
 793                                         struct ieee80211_channel_sw_ie sw_elem;
 794                                 } __attribute__((packed)) chan_switch;
 795                                 struct{
 796                                         u8 action_code;
 797                                         u8 dialog_token;
 798                                         u8 element_id;
 799                                         u8 length;
 800                                         struct ieee80211_msrment_ie msr_elem;
 801                                 } __attribute__((packed)) measurement;
 802                                 struct{
 803                                         u8 action_code;
 804                                         u8 dialog_token;
 805                                         __le16 capab;
 806                                         __le16 timeout;
 807                                         __le16 start_seq_num;
 808                                 } __attribute__((packed)) addba_req;
 809                                 struct{
 810                                         u8 action_code;
 811                                         u8 dialog_token;
 812                                         __le16 status;
 813                                         __le16 capab;
 814                                         __le16 timeout;
 815                                 } __attribute__((packed)) addba_resp;
 816                                 struct{
 817                                         u8 action_code;
 818                                         __le16 params;
 819                                         __le16 reason_code;
 820                                 } __attribute__((packed)) delba;
 821                                 struct {
 822                                         u8 action_code;
 823                                         u8 variable[0];
 824                                 } __attribute__((packed)) self_prot;
 825                                 struct{
 826                                         u8 action_code;
 827                                         u8 variable[0];
 828                                 } __attribute__((packed)) mesh_action;
 829                                 struct {
 830                                         u8 action;
 831                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 832                                 } __attribute__ ((packed)) sa_query;
 833                                 struct {
 834                                         u8 action;
 835                                         u8 smps_control;
 836                                 } __attribute__ ((packed)) ht_smps;
 837                                 struct {
 838                                         u8 action_code;
 839                                         u8 dialog_token;
 840                                         __le16 capability;
 841                                         u8 variable[0];
 842                                 } __packed tdls_discover_resp;
 843                         } u;
 844                 } __attribute__ ((packed)) action;
 845         } u;
 846 } __attribute__ ((packed));
 847
 848 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 849 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 850
 851 /* mgmt header + 1 byte category code */
 852 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 853
 854
 855 /* Management MIC information element (IEEE 802.11w) */
 856 struct ieee80211_mmie {
 857         u8 element_id;
 858         u8 length;
 859         __le16 key_id;
 860         u8 sequence_number[6];
 861         u8 mic[8];
 862 } __attribute__ ((packed));
 863
 864 struct ieee80211_vendor_ie {
 865         u8 element_id;
 866         u8 len;
 867         u8 oui[3];
 868         u8 oui_type;
 869 } __packed;
 870
 871 /* Control frames */
 872 struct ieee80211_rts {
 873         __le16 frame_control;
 874         __le16 duration;
 875         u8 ra[6];
 876         u8 ta[6];
 877 } __attribute__ ((packed));
 878
 879 struct ieee80211_cts {
 880         __le16 frame_control;
 881         __le16 duration;
 882         u8 ra[6];
 883 } __attribute__ ((packed));
 884
 885 struct ieee80211_pspoll {
 886         __le16 frame_control;
 887         __le16 aid;
 888         u8 bssid[6];
 889         u8 ta[6];
 890 } __attribute__ ((packed));
 891
 892 /* TDLS */
 893
 894 /* Link-id information element */
 895 struct ieee80211_tdls_lnkie {
 896         u8 ie_type; /* Link Identifier IE */
 897         u8 ie_len;
 898         u8 bssid[6];
 899         u8 init_sta[6];
 900         u8 resp_sta[6];
 901 } __packed;
 902
 903 struct ieee80211_tdls_data {
 904         u8 da[6];
 905         u8 sa[6];
 906         __be16 ether_type;
 907         u8 payload_type;
 908         u8 category;
 909         u8 action_code;
 910         union {
 911                 struct {
 912                         u8 dialog_token;
 913                         __le16 capability;
 914                         u8 variable[0];
 915                 } __packed setup_req;
 916                 struct {
 917                         __le16 status_code;
 918                         u8 dialog_token;
 919                         __le16 capability;
 920                         u8 variable[0];
 921                 } __packed setup_resp;
 922                 struct {
 923                         __le16 status_code;
 924                         u8 dialog_token;
 925                         u8 variable[0];
 926                 } __packed setup_cfm;
 927                 struct {
 928                         __le16 reason_code;
 929                         u8 variable[0];
 930                 } __packed teardown;
 931                 struct {
 932                         u8 dialog_token;
 933                         u8 variable[0];
 934                 } __packed discover_req;
 935         } u;
 936 } __packed;
 937
 938 /*
 939  * Peer-to-Peer IE attribute related definitions.
 940  */
 941 /**
 942  * enum ieee80211_p2p_attr_id - identifies type of peer-to-peer attribute.
 943  */
 944 enum ieee80211_p2p_attr_id {
 945         IEEE80211_P2P_ATTR_STATUS = 0,
 946         IEEE80211_P2P_ATTR_MINOR_REASON,
 947         IEEE80211_P2P_ATTR_CAPABILITY,
 948         IEEE80211_P2P_ATTR_DEVICE_ID,
 949         IEEE80211_P2P_ATTR_GO_INTENT,
 950         IEEE80211_P2P_ATTR_GO_CONFIG_TIMEOUT,
 951         IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
 952         IEEE80211_P2P_ATTR_GROUP_BSSID,
 953         IEEE80211_P2P_ATTR_EXT_LISTEN_TIMING,
 954         IEEE80211_P2P_ATTR_INTENDED_IFACE_ADDR,
 955         IEEE80211_P2P_ATTR_MANAGABILITY,
 956         IEEE80211_P2P_ATTR_CHANNEL_LIST,
 957         IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
 958         IEEE80211_P2P_ATTR_DEVICE_INFO,
 959         IEEE80211_P2P_ATTR_GROUP_INFO,
 960         IEEE80211_P2P_ATTR_GROUP_ID,
 961         IEEE80211_P2P_ATTR_INTERFACE,
 962         IEEE80211_P2P_ATTR_OPER_CHANNEL,
 963         IEEE80211_P2P_ATTR_INVITE_FLAGS,
 964         /* 19 - 220: Reserved */
 965         IEEE80211_P2P_ATTR_VENDOR_SPECIFIC = 221,
 966
 967         IEEE80211_P2P_ATTR_MAX
 968 };
 969
 970 /**
 971  * struct ieee80211_bar - HT Block Ack Request
 972  *
 973  * This structure refers to "HT BlockAckReq" as
 974  * described in 802.11n draft section 7.2.1.7.1
 975  */
 976 struct ieee80211_bar {
 977         __le16 frame_control;
 978         __le16 duration;
 979         __u8 ra[6];
 980         __u8 ta[6];
 981         __le16 control;
 982         __le16 start_seq_num;
 983 } __attribute__((packed)) __aligned(4);
 984
 985 /* 802.11 BA(R) control masks */
 986 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 987 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 988 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 989 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 990 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 991
 992 /**
 993  * struct ieee80211_ba - HT Block Ack
 994  *
 995  * This structure refers to "HT BlockAck" as
 996  * described in 802.11n draft section 7.2.1.8.1
 997  */
 998 struct ieee80211_ba {
 999         __le16 frame_control;
1000         __le16 duration;
1001         u8 ra[6];
1002         u8 ta[6];
1003         __le16 control;
1004
1005         __le16 start_seq_num;
1006         u8 bitmap[8];
1007 } __attribute__((packed));
1008
1009 #define IEEE80211_HT_MCS_MASK_LEN               10
1010
1011 /**
1012  * struct ieee80211_mcs_info - MCS information
1013  * @rx_mask: RX mask
1014  * @rx_highest: highest supported RX rate. If set represents
1015  *      the highest supported RX data rate in units of 1 Mbps.
1016  *      If this field is 0 this value should not be used to
1017  *      consider the highest RX data rate supported.
1018  * @tx_params: TX parameters
1019  */
1020 struct ieee80211_mcs_info {
1021         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
1022         __le16 rx_highest;
1023         u8 tx_params;
1024         u8 reserved[3];
1025 } __attribute__((packed));
1026
1027 /* 802.11n HT capability MSC set */
1028 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
1029 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
1030 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
1031 /* value 0 == 1 stream etc */
1032 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
1033 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
1034 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
1035 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
1036
1037 /*
1038  * 802.11n D5.0 20.3.5 / 20.6 says:
1039  * - indices 0 to 7 and 32 are single spatial stream
1040  * - 8 to 31 are multiple spatial streams using equal modulation
1041  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
1042  * - remainder are multiple spatial streams using unequal modulation
1043  */
1044 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
1045 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
1046         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
1047
1048 /**
1049  * struct ieee80211_ht_cap - HT capabilities
1050  *
1051  * This structure is the "HT capabilities element" as
1052  * described in 802.11n D5.0 7.3.2.57
1053  */
1054 struct ieee80211_ht_cap {
1055         __le16 cap_info;
1056         u8 ampdu_params_info;
1057
1058         /* 16 bytes MCS information */
1059         struct ieee80211_mcs_info mcs;
1060
1061         __le16 extended_ht_cap_info;
1062         __le32 tx_BF_cap_info;
1063         u8 antenna_selection_info;
1064 } __attribute__ ((packed));
1065
1066 /* 802.11n HT capabilities masks (for cap_info) */
1067 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1068 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1069 #define IEEE80211_HT_CAP_SM_PS                  0x000C
1070 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1071 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
1072 #define IEEE80211_HT_CAP_SGI_20                 0x0020
1073 #define IEEE80211_HT_CAP_SGI_40                 0x0040
1074 #define IEEE80211_HT_CAP_TX_STBC                0x0080
1075 #define IEEE80211_HT_CAP_RX_STBC                0x0300
1076 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1077 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
1078 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1079 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1080 #define IEEE80211_HT_CAP_RESERVED               0x2000
1081 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1082 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1083
1084 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1085 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1086 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1087 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1088 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1089 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1090 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1091 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1092
1093 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1094 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1095 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1096 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1097
1098 /*
1099  * Maximum length of AMPDU that the STA can receive.
1100  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1101  */
1102 enum ieee80211_max_ampdu_length_exp {
1103         IEEE80211_HT_MAX_AMPDU_8K = 0,
1104         IEEE80211_HT_MAX_AMPDU_16K = 1,
1105         IEEE80211_HT_MAX_AMPDU_32K = 2,
1106         IEEE80211_HT_MAX_AMPDU_64K = 3
1107 };
1108
1109 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1110
1111 /* Minimum MPDU start spacing */
1112 enum ieee80211_min_mpdu_spacing {
1113         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1114         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1115         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1116         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1117         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1118         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1119         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1120         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1121 };
1122
1123 /**
1124  * struct ieee80211_ht_operation - HT operation IE
1125  *
1126  * This structure is the "HT operation element" as
1127  * described in 802.11n-2009 7.3.2.57
1128  */
1129 struct ieee80211_ht_operation {
1130         u8 primary_chan;
1131         u8 ht_param;
1132         __le16 operation_mode;
1133         __le16 stbc_param;
1134         u8 basic_set[16];
1135 } __attribute__ ((packed));
1136
1137 /* for ht_param */
1138 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1139 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1140 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1141 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1142 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1143 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1144
1145 /* for operation_mode */
1146 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1147 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1148 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1149 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1150 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1151 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1152 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1153
1154 /* for stbc_param */
1155 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1156 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1157 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1158 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1159 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1160 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1161
1162
1163 /* block-ack parameters */
1164 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1165 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1166 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1167 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1168 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1169
1170 /*
1171  * A-PMDU buffer sizes
1172  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1173  */
1174 #define IEEE80211_MIN_AMPDU_BUF 0x8
1175 #define IEEE80211_MAX_AMPDU_BUF 0x40
1176
1177
1178 /* Spatial Multiplexing Power Save Modes (for capability) */
1179 #define WLAN_HT_CAP_SM_PS_STATIC        0
1180 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1181 #define WLAN_HT_CAP_SM_PS_INVALID       2
1182 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1183
1184 /* for SM power control field lower two bits */
1185 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1186 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1187 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1188
1189 /**
1190  * struct ieee80211_vht_mcs_info - VHT MCS information
1191  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1192  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1193  *      STA can receive. Rate expressed in units of 1 Mbps.
1194  *      If this field is 0 this value should not be used to
1195  *      consider the highest RX data rate supported.
1196  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1197  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1198  *      STA can transmit. Rate expressed in units of 1 Mbps.
1199  *      If this field is 0 this value should not be used to
1200  *      consider the highest TX data rate supported.
1201  */
1202 struct ieee80211_vht_mcs_info {
1203         __le16 rx_mcs_map;
1204         __le16 rx_highest;
1205         __le16 tx_mcs_map;
1206         __le16 tx_highest;
1207 } __packed;
1208
1209 /**
1210  * struct ieee80211_vht_cap - VHT capabilities
1211  *
1212  * This structure is the "VHT capabilities element" as
1213  * described in 802.11ac D3.0 8.4.2.160
1214  * @vht_cap_info: VHT capability info
1215  * @supp_mcs: VHT MCS supported rates
1216  */
1217 struct ieee80211_vht_cap {
1218         __le32 vht_cap_info;
1219         struct ieee80211_vht_mcs_info supp_mcs;
1220 } __packed;
1221
1222 /**
1223  * struct ieee80211_vht_operation - VHT operation IE
1224  *
1225  * This structure is the "VHT operation element" as
1226  * described in 802.11ac D3.0 8.4.2.161
1227  * @chan_width: Operating channel width
1228  * @center_freq_seg1_idx: center freq segment 1 index
1229  * @center_freq_seg2_idx: center freq segment 2 index
1230  * @basic_mcs_set: VHT Basic MCS rate set
1231  */
1232 struct ieee80211_vht_operation {
1233         u8 chan_width;
1234         u8 center_freq_seg1_idx;
1235         u8 center_freq_seg2_idx;
1236         __le16 basic_mcs_set;
1237 } __packed;
1238
1239
1240 #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1241 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1242 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT  2
1243 #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1244
1245 /* 802.11ac VHT Capabilities */
1246 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                0x00000000
1247 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                0x00000001
1248 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454               0x00000002
1249 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ              0x00000004
1250 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ     0x00000008
1251 #define IEEE80211_VHT_CAP_RXLDPC                              0x00000010
1252 #define IEEE80211_VHT_CAP_SHORT_GI_80                         0x00000020
1253 #define IEEE80211_VHT_CAP_SHORT_GI_160                        0x00000040
1254 #define IEEE80211_VHT_CAP_TXSTBC                              0x00000080
1255 #define IEEE80211_VHT_CAP_RXSTBC_1                            0x00000100
1256 #define IEEE80211_VHT_CAP_RXSTBC_2                            0x00000200
1257 #define IEEE80211_VHT_CAP_RXSTBC_3                            0x00000300
1258 #define IEEE80211_VHT_CAP_RXSTBC_4                            0x00000400
1259 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE               0x00000800
1260 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE               0x00001000
1261 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX             0x00006000
1262 #define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX              0x00030000
1263 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE               0x00080000
1264 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE               0x00100000
1265 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                         0x00200000
1266 #define IEEE80211_VHT_CAP_HTC_VHT                             0x00400000
1267 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT          0x00800000
1268 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB   0x08000000
1269 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB     0x0c000000
1270 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                  0x10000000
1271 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                  0x20000000
1272
1273 /* Authentication algorithms */
1274 #define WLAN_AUTH_OPEN 0
1275 #define WLAN_AUTH_SHARED_KEY 1
1276 #define WLAN_AUTH_FT 2
1277 #define WLAN_AUTH_SAE 3
1278 #define WLAN_AUTH_LEAP 128
1279
1280 #define WLAN_AUTH_CHALLENGE_LEN 128
1281
1282 #define WLAN_CAPABILITY_ESS             (1<<0)
1283 #define WLAN_CAPABILITY_IBSS            (1<<1)
1284
1285 /*
1286  * A mesh STA sets the ESS and IBSS capability bits to zero.
1287  * however, this holds true for p2p probe responses (in the p2p_find
1288  * phase) as well.
1289  */
1290 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1291         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1292
1293 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1294 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1295 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1296 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1297 #define WLAN_CAPABILITY_PBCC            (1<<6)
1298 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1299
1300 /* 802.11h */
1301 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1302 #define WLAN_CAPABILITY_QOS             (1<<9)
1303 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1304 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1305
1306 /* DMG (60gHz) 802.11ad */
1307 /* type - bits 0..1 */
1308 #define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1309 #define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1310 #define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1311
1312 #define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1313 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
1314 #define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1315 #define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1316
1317 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1318 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1319
1320 /* measurement */
1321 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1322 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1323 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1324
1325 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1326 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1327 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1328
1329 /* 802.11g ERP information element */
1330 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1331 #define WLAN_ERP_USE_PROTECTION (1<<1)
1332 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1333
1334 /* WLAN_ERP_BARKER_PREAMBLE values */
1335 enum {
1336         WLAN_ERP_PREAMBLE_SHORT = 0,
1337         WLAN_ERP_PREAMBLE_LONG = 1,
1338 };
1339
1340 /* Band ID, 802.11ad #8.4.1.45 */
1341 enum {
1342         IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1343         IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1344         IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1345         IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1346         IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1347         IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1348 };
1349
1350 /* Status codes */
1351 enum ieee80211_statuscode {
1352         WLAN_STATUS_SUCCESS = 0,
1353         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1354         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1355         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1356         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1357         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1358         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1359         WLAN_STATUS_CHALLENGE_FAIL = 15,
1360         WLAN_STATUS_AUTH_TIMEOUT = 16,
1361         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1362         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1363         /* 802.11b */
1364         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1365         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1366         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1367         /* 802.11h */
1368         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1369         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1370         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1371         /* 802.11g */
1372         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1373         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1374         /* 802.11w */
1375         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1376         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1377         /* 802.11i */
1378         WLAN_STATUS_INVALID_IE = 40,
1379         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1380         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1381         WLAN_STATUS_INVALID_AKMP = 43,
1382         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1383         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1384         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1385         /* 802.11e */
1386         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1387         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1388         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1389         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1390         WLAN_STATUS_REQUEST_DECLINED = 37,
1391         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1392         WLAN_STATUS_CHANGE_TSPEC = 39,
1393         WLAN_STATUS_WAIT_TS_DELAY = 47,
1394         WLAN_STATUS_NO_DIRECT_LINK = 48,
1395         WLAN_STATUS_STA_NOT_PRESENT = 49,
1396         WLAN_STATUS_STA_NOT_QSTA = 50,
1397         /* 802.11s */
1398         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1399         WLAN_STATUS_FCG_NOT_SUPP = 78,
1400         WLAN_STATUS_STA_NO_TBTT = 78,
1401         /* 802.11ad */
1402         WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1403         WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1404         WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1405         WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1406         WLAN_STATUS_PERFORMING_FST_NOW = 87,
1407         WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1408         WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1409         WLAN_STATUS_REJECT_DSE_BAND = 96,
1410         WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1411         WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1412 };
1413
1414
1415 /* Reason codes */
1416 enum ieee80211_reasoncode {
1417         WLAN_REASON_UNSPECIFIED = 1,
1418         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1419         WLAN_REASON_DEAUTH_LEAVING = 3,
1420         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1421         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1422         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1423         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1424         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1425         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1426         /* 802.11h */
1427         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1428         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1429         /* 802.11i */
1430         WLAN_REASON_INVALID_IE = 13,
1431         WLAN_REASON_MIC_FAILURE = 14,
1432         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1433         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1434         WLAN_REASON_IE_DIFFERENT = 17,
1435         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1436         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1437         WLAN_REASON_INVALID_AKMP = 20,
1438         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1439         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1440         WLAN_REASON_IEEE8021X_FAILED = 23,
1441         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1442         /* 802.11e */
1443         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1444         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1445         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1446         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1447         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1448         WLAN_REASON_QSTA_NOT_USE = 37,
1449         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1450         WLAN_REASON_QSTA_TIMEOUT = 39,
1451         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1452         /* 802.11s */
1453         WLAN_REASON_MESH_PEER_CANCELED = 52,
1454         WLAN_REASON_MESH_MAX_PEERS = 53,
1455         WLAN_REASON_MESH_CONFIG = 54,
1456         WLAN_REASON_MESH_CLOSE = 55,
1457         WLAN_REASON_MESH_MAX_RETRIES = 56,
1458         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1459         WLAN_REASON_MESH_INVALID_GTK = 58,
1460         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1461         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1462         WLAN_REASON_MESH_PATH_ERROR = 61,
1463         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1464         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1465         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1466         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1467         WLAN_REASON_MESH_CHAN = 66,
1468 };
1469
1470
1471 /* Information Element IDs */
1472 enum ieee80211_eid {
1473         WLAN_EID_SSID = 0,
1474         WLAN_EID_SUPP_RATES = 1,
1475         WLAN_EID_FH_PARAMS = 2,
1476         WLAN_EID_DS_PARAMS = 3,
1477         WLAN_EID_CF_PARAMS = 4,
1478         WLAN_EID_TIM = 5,
1479         WLAN_EID_IBSS_PARAMS = 6,
1480         WLAN_EID_CHALLENGE = 16,
1481
1482         WLAN_EID_COUNTRY = 7,
1483         WLAN_EID_HP_PARAMS = 8,
1484         WLAN_EID_HP_TABLE = 9,
1485         WLAN_EID_REQUEST = 10,
1486
1487         WLAN_EID_QBSS_LOAD = 11,
1488         WLAN_EID_EDCA_PARAM_SET = 12,
1489         WLAN_EID_TSPEC = 13,
1490         WLAN_EID_TCLAS = 14,
1491         WLAN_EID_SCHEDULE = 15,
1492         WLAN_EID_TS_DELAY = 43,
1493         WLAN_EID_TCLAS_PROCESSING = 44,
1494         WLAN_EID_QOS_CAPA = 46,
1495         /* 802.11z */
1496         WLAN_EID_LINK_ID = 101,
1497         /* 802.11s */
1498         WLAN_EID_MESH_CONFIG = 113,
1499         WLAN_EID_MESH_ID = 114,
1500         WLAN_EID_LINK_METRIC_REPORT = 115,
1501         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1502         WLAN_EID_PEER_MGMT = 117,
1503         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1504         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1505         WLAN_EID_BEACON_TIMING = 120,
1506         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1507         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1508         WLAN_EID_MCCAOP_ADVERT = 123,
1509         WLAN_EID_MCCAOP_TEARDOWN = 124,
1510         WLAN_EID_GANN = 125,
1511         WLAN_EID_RANN = 126,
1512         WLAN_EID_PREQ = 130,
1513         WLAN_EID_PREP = 131,
1514         WLAN_EID_PERR = 132,
1515         WLAN_EID_PXU = 137,
1516         WLAN_EID_PXUC = 138,
1517         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1518         WLAN_EID_MIC = 140,
1519
1520         WLAN_EID_PWR_CONSTRAINT = 32,
1521         WLAN_EID_PWR_CAPABILITY = 33,
1522         WLAN_EID_TPC_REQUEST = 34,
1523         WLAN_EID_TPC_REPORT = 35,
1524         WLAN_EID_SUPPORTED_CHANNELS = 36,
1525         WLAN_EID_CHANNEL_SWITCH = 37,
1526         WLAN_EID_MEASURE_REQUEST = 38,
1527         WLAN_EID_MEASURE_REPORT = 39,
1528         WLAN_EID_QUIET = 40,
1529         WLAN_EID_IBSS_DFS = 41,
1530
1531         WLAN_EID_ERP_INFO = 42,
1532         WLAN_EID_EXT_SUPP_RATES = 50,
1533
1534         WLAN_EID_HT_CAPABILITY = 45,
1535         WLAN_EID_HT_OPERATION = 61,
1536
1537         WLAN_EID_RSN = 48,
1538         WLAN_EID_MMIE = 76,
1539         WLAN_EID_VENDOR_SPECIFIC = 221,
1540         WLAN_EID_QOS_PARAMETER = 222,
1541
1542         WLAN_EID_AP_CHAN_REPORT = 51,
1543         WLAN_EID_NEIGHBOR_REPORT = 52,
1544         WLAN_EID_RCPI = 53,
1545         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1546         WLAN_EID_ANTENNA_INFO = 64,
1547         WLAN_EID_RSNI = 65,
1548         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1549         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1550         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1551         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1552         WLAN_EID_MULTIPLE_BSSID = 71,
1553         WLAN_EID_BSS_COEX_2040 = 72,
1554         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1555         WLAN_EID_EXT_CAPABILITY = 127,
1556
1557         WLAN_EID_MOBILITY_DOMAIN = 54,
1558         WLAN_EID_FAST_BSS_TRANSITION = 55,
1559         WLAN_EID_TIMEOUT_INTERVAL = 56,
1560         WLAN_EID_RIC_DATA = 57,
1561         WLAN_EID_RIC_DESCRIPTOR = 75,
1562
1563         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1564         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1565         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1566
1567         WLAN_EID_VHT_CAPABILITY = 191,
1568         WLAN_EID_VHT_OPERATION = 192,
1569
1570         /* 802.11ad */
1571         WLAN_EID_NON_TX_BSSID_CAP =  83,
1572         WLAN_EID_WAKEUP_SCHEDULE = 143,
1573         WLAN_EID_EXT_SCHEDULE = 144,
1574         WLAN_EID_STA_AVAILABILITY = 145,
1575         WLAN_EID_DMG_TSPEC = 146,
1576         WLAN_EID_DMG_AT = 147,
1577         WLAN_EID_DMG_CAP = 148,
1578         WLAN_EID_DMG_OPERATION = 151,
1579         WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1580         WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1581         WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1582         WLAN_EID_AWAKE_WINDOW = 157,
1583         WLAN_EID_MULTI_BAND = 158,
1584         WLAN_EID_ADDBA_EXT = 159,
1585         WLAN_EID_NEXT_PCP_LIST = 160,
1586         WLAN_EID_PCP_HANDOVER = 161,
1587         WLAN_EID_DMG_LINK_MARGIN = 162,
1588         WLAN_EID_SWITCHING_STREAM = 163,
1589         WLAN_EID_SESSION_TRANSITION = 164,
1590         WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1591         WLAN_EID_CLUSTER_REPORT = 166,
1592         WLAN_EID_RELAY_CAP = 167,
1593         WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1594         WLAN_EID_BEAM_LINK_MAINT = 169,
1595         WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1596         WLAN_EID_U_PID = 171,
1597         WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1598         WLAN_EID_QUIET_PERIOD_REQ = 175,
1599         WLAN_EID_QUIET_PERIOD_RESP = 177,
1600         WLAN_EID_EPAC_POLICY = 182,
1601         WLAN_EID_CLISTER_TIME_OFF = 183,
1602         WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1603 };
1604
1605 /* Action category code */
1606 enum ieee80211_category {
1607         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1608         WLAN_CATEGORY_QOS = 1,
1609         WLAN_CATEGORY_DLS = 2,
1610         WLAN_CATEGORY_BACK = 3,
1611         WLAN_CATEGORY_PUBLIC = 4,
1612         WLAN_CATEGORY_HT = 7,
1613         WLAN_CATEGORY_SA_QUERY = 8,
1614         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1615         WLAN_CATEGORY_TDLS = 12,
1616         WLAN_CATEGORY_MESH_ACTION = 13,
1617         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1618         WLAN_CATEGORY_SELF_PROTECTED = 15,
1619         WLAN_CATEGORY_DMG = 16,
1620         WLAN_CATEGORY_WMM = 17,
1621         WLAN_CATEGORY_FST = 18,
1622         WLAN_CATEGORY_UNPROT_DMG = 20,
1623         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1624         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1625 };
1626
1627 /* SPECTRUM_MGMT action code */
1628 enum ieee80211_spectrum_mgmt_actioncode {
1629         WLAN_ACTION_SPCT_MSR_REQ = 0,
1630         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1631         WLAN_ACTION_SPCT_TPC_REQ = 2,
1632         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1633         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1634 };
1635
1636 /* HT action codes */
1637 enum ieee80211_ht_actioncode {
1638         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1639         WLAN_HT_ACTION_SMPS = 1,
1640         WLAN_HT_ACTION_PSMP = 2,
1641         WLAN_HT_ACTION_PCO_PHASE = 3,
1642         WLAN_HT_ACTION_CSI = 4,
1643         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1644         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1645         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1646 };
1647
1648 /* Self Protected Action codes */
1649 enum ieee80211_self_protected_actioncode {
1650         WLAN_SP_RESERVED = 0,
1651         WLAN_SP_MESH_PEERING_OPEN = 1,
1652         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1653         WLAN_SP_MESH_PEERING_CLOSE = 3,
1654         WLAN_SP_MGK_INFORM = 4,
1655         WLAN_SP_MGK_ACK = 5,
1656 };
1657
1658 /* Mesh action codes */
1659 enum ieee80211_mesh_actioncode {
1660         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1661         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1662         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1663         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1664         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1665         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1666         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1667         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1668         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1669         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1670         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1671 };
1672
1673 /* Security key length */
1674 enum ieee80211_key_len {
1675         WLAN_KEY_LEN_WEP40 = 5,
1676         WLAN_KEY_LEN_WEP104 = 13,
1677         WLAN_KEY_LEN_CCMP = 16,
1678         WLAN_KEY_LEN_TKIP = 32,
1679         WLAN_KEY_LEN_AES_CMAC = 16,
1680 };
1681
1682 /* Public action codes */
1683 enum ieee80211_pub_actioncode {
1684         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1685 };
1686
1687 /* TDLS action codes */
1688 enum ieee80211_tdls_actioncode {
1689         WLAN_TDLS_SETUP_REQUEST = 0,
1690         WLAN_TDLS_SETUP_RESPONSE = 1,
1691         WLAN_TDLS_SETUP_CONFIRM = 2,
1692         WLAN_TDLS_TEARDOWN = 3,
1693         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1694         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1695         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1696         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1697         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1698         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1699         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1700 };
1701
1702 /*
1703  * TDLS capabililites to be enabled in the 5th byte of the
1704  * @WLAN_EID_EXT_CAPABILITY information element
1705  */
1706 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1707 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1708
1709 /* TDLS specific payload type in the LLC/SNAP header */
1710 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1711
1712 /**
1713  * enum - mesh synchronization method identifier
1714  *
1715  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1716  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1717  *      that will be specified in a vendor specific information element
1718  */
1719 enum {
1720         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1721         IEEE80211_SYNC_METHOD_VENDOR = 255,
1722 };
1723
1724 /**
1725  * enum - mesh path selection protocol identifier
1726  *
1727  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1728  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1729  *      be specified in a vendor specific information element
1730  */
1731 enum {
1732         IEEE80211_PATH_PROTOCOL_HWMP = 1,
1733         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1734 };
1735
1736 /**
1737  * enum - mesh path selection metric identifier
1738  *
1739  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1740  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1741  *      specified in a vendor specific information element
1742  */
1743 enum {
1744         IEEE80211_PATH_METRIC_AIRTIME = 1,
1745         IEEE80211_PATH_METRIC_VENDOR = 255,
1746 };
1747
1748 /**
1749  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1750  *
1751  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1752  *
1753  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1754  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1755  *      this value
1756  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1757  *      the proactive PREQ with proactive PREP subfield set to 0
1758  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1759  *      supports the proactive PREQ with proactive PREP subfield set to 1
1760  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1761  *      the proactive RANN
1762  */
1763 enum ieee80211_root_mode_identifier {
1764         IEEE80211_ROOTMODE_NO_ROOT = 0,
1765         IEEE80211_ROOTMODE_ROOT = 1,
1766         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1767         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1768         IEEE80211_PROACTIVE_RANN = 4,
1769 };
1770
1771 /*
1772  * IEEE 802.11-2007 7.3.2.9 Country information element
1773  *
1774  * Minimum length is 8 octets, ie len must be evenly
1775  * divisible by 2
1776  */
1777
1778 /* Although the spec says 8 I'm seeing 6 in practice */
1779 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1780
1781 /* The Country String field of the element shall be 3 octets in length */
1782 #define IEEE80211_COUNTRY_STRING_LEN    3
1783
1784 /*
1785  * For regulatory extension stuff see IEEE 802.11-2007
1786  * Annex I (page 1141) and Annex J (page 1147). Also
1787  * review 7.3.2.9.
1788  *
1789  * When dot11RegulatoryClassesRequired is true and the
1790  * first_channel/reg_extension_id is >= 201 then the IE
1791  * compromises of the 'ext' struct represented below:
1792  *
1793  *  - Regulatory extension ID - when generating IE this just needs
1794  *    to be monotonically increasing for each triplet passed in
1795  *    the IE
1796  *  - Regulatory class - index into set of rules
1797  *  - Coverage class - index into air propagation time (Table 7-27),
1798  *    in microseconds, you can compute the air propagation time from
1799  *    the index by multiplying by 3, so index 10 yields a propagation
1800  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1801  *    yet. A value of 0 inicates air propagation of <= 1 us.
1802  *
1803  *  See also Table I.2 for Emission limit sets and table
1804  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1805  *  a reg_class to an emission limit set and behavior limit set.
1806  */
1807 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1808
1809 /*
1810  *  Channels numbers in the IE must be monotonically increasing
1811  *  if dot11RegulatoryClassesRequired is not true.
1812  *
1813  *  If dot11RegulatoryClassesRequired is true consecutive
1814  *  subband triplets following a regulatory triplet shall
1815  *  have monotonically increasing first_channel number fields.
1816  *
1817  *  Channel numbers shall not overlap.
1818  *
1819  *  Note that max_power is signed.
1820  */
1821 struct ieee80211_country_ie_triplet {
1822         union {
1823                 struct {
1824                         u8 first_channel;
1825                         u8 num_channels;
1826                         s8 max_power;
1827                 } __attribute__ ((packed)) chans;
1828                 struct {
1829                         u8 reg_extension_id;
1830                         u8 reg_class;
1831                         u8 coverage_class;
1832                 } __attribute__ ((packed)) ext;
1833         };
1834 } __attribute__ ((packed));
1835
1836 enum ieee80211_timeout_interval_type {
1837         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1838         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1839         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1840 };
1841
1842 /* BACK action code */
1843 enum ieee80211_back_actioncode {
1844         WLAN_ACTION_ADDBA_REQ = 0,
1845         WLAN_ACTION_ADDBA_RESP = 1,
1846         WLAN_ACTION_DELBA = 2,
1847 };
1848
1849 /* BACK (block-ack) parties */
1850 enum ieee80211_back_parties {
1851         WLAN_BACK_RECIPIENT = 0,
1852         WLAN_BACK_INITIATOR = 1,
1853 };
1854
1855 /* SA Query action */
1856 enum ieee80211_sa_query_action {
1857         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1858         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1859 };
1860
1861
1862 /* cipher suite selectors */
1863 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1864 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1865 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1866 /* reserved:                            0x000FAC03 */
1867 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1868 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1869 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1870 #define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
1871
1872 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1873
1874 /* AKM suite selectors */
1875 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1876 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1877 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1878 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1879
1880 #define WLAN_MAX_KEY_LEN                32
1881
1882 #define WLAN_PMKID_LEN                  16
1883
1884 #define WLAN_OUI_WFA                    0x506f9a
1885 #define WLAN_OUI_TYPE_WFA_P2P           9
1886 #define WLAN_OUI_MICROSOFT              0x0050f2
1887 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
1888 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
1889 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
1890
1891 /*
1892  * WMM/802.11e Tspec Element
1893  */
1894 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1895 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1896
1897 enum ieee80211_tspec_status_code {
1898         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1899         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1900 };
1901
1902 struct ieee80211_tspec_ie {
1903         u8 element_id;
1904         u8 len;
1905         u8 oui[3];
1906         u8 oui_type;
1907         u8 oui_subtype;
1908         u8 version;
1909         __le16 tsinfo;
1910         u8 tsinfo_resvd;
1911         __le16 nominal_msdu;
1912         __le16 max_msdu;
1913         __le32 min_service_int;
1914         __le32 max_service_int;
1915         __le32 inactivity_int;
1916         __le32 suspension_int;
1917         __le32 service_start_time;
1918         __le32 min_data_rate;
1919         __le32 mean_data_rate;
1920         __le32 peak_data_rate;
1921         __le32 max_burst_size;
1922         __le32 delay_bound;
1923         __le32 min_phy_rate;
1924         __le16 sba;
1925         __le16 medium_time;
1926 } __packed;
1927
1928 /**
1929  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1930  * @hdr: the frame
1931  *
1932  * The qos ctrl bytes come after the frame_control, duration, seq_num
1933  * and 3 or 4 addresses of length ETH_ALEN.
1934  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1935  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1936  */
1937 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1938 {
1939         if (ieee80211_has_a4(hdr->frame_control))
1940                 return (u8 *)hdr + 30;
1941         else
1942                 return (u8 *)hdr + 24;
1943 }
1944
1945 /**
1946  * ieee80211_get_SA - get pointer to SA
1947  * @hdr: the frame
1948  *
1949  * Given an 802.11 frame, this function returns the offset
1950  * to the source address (SA). It does not verify that the
1951  * header is long enough to contain the address, and the
1952  * header must be long enough to contain the frame control
1953  * field.
1954  */
1955 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1956 {
1957         if (ieee80211_has_a4(hdr->frame_control))
1958                 return hdr->addr4;
1959         if (ieee80211_has_fromds(hdr->frame_control))
1960                 return hdr->addr3;
1961         return hdr->addr2;
1962 }
1963
1964 /**
1965  * ieee80211_get_DA - get pointer to DA
1966  * @hdr: the frame
1967  *
1968  * Given an 802.11 frame, this function returns the offset
1969  * to the destination address (DA). It does not verify that
1970  * the header is long enough to contain the address, and the
1971  * header must be long enough to contain the frame control
1972  * field.
1973  */
1974 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1975 {
1976         if (ieee80211_has_tods(hdr->frame_control))
1977                 return hdr->addr3;
1978         else
1979                 return hdr->addr1;
1980 }
1981
1982 /**
1983  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1984  * @hdr: the frame (buffer must include at least the first octet of payload)
1985  */
1986 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1987 {
1988         if (ieee80211_is_disassoc(hdr->frame_control) ||
1989             ieee80211_is_deauth(hdr->frame_control))
1990                 return true;
1991
1992         if (ieee80211_is_action(hdr->frame_control)) {
1993                 u8 *category;
1994
1995                 /*
1996                  * Action frames, excluding Public Action frames, are Robust
1997                  * Management Frames. However, if we are looking at a Protected
1998                  * frame, skip the check since the data may be encrypted and
1999                  * the frame has already been found to be a Robust Management
2000                  * Frame (by the other end).
2001                  */
2002                 if (ieee80211_has_protected(hdr->frame_control))
2003                         return true;
2004                 category = ((u8 *) hdr) + 24;
2005                 return *category != WLAN_CATEGORY_PUBLIC &&
2006                         *category != WLAN_CATEGORY_HT &&
2007                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
2008                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
2009         }
2010
2011         return false;
2012 }
2013
2014 /**
2015  * ieee80211_is_public_action - check if frame is a public action frame
2016  * @hdr: the frame
2017  * @len: length of the frame
2018  */
2019 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
2020                                               size_t len)
2021 {
2022         struct ieee80211_mgmt *mgmt = (void *)hdr;
2023
2024         if (len < IEEE80211_MIN_ACTION_SIZE)
2025                 return false;
2026         if (!ieee80211_is_action(hdr->frame_control))
2027                 return false;
2028         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
2029 }
2030
2031 /**
2032  * ieee80211_dsss_chan_to_freq - get channel center frequency
2033  * @channel: the DSSS channel
2034  *
2035  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
2036  * Ref IEEE 802.11-2007 section 15.6
2037  */
2038 static inline int ieee80211_dsss_chan_to_freq(int channel)
2039 {
2040         if ((channel > 0) && (channel < 14))
2041                 return 2407 + (channel * 5);
2042         else if (channel == 14)
2043                 return 2484;
2044         else
2045                 return -1;
2046 }
2047
2048 /**
2049  * ieee80211_freq_to_dsss_chan - get channel
2050  * @freq: the frequency
2051  *
2052  * Convert frequency (MHz) to IEEE802.11 DSSS channel
2053  * Ref IEEE 802.11-2007 section 15.6
2054  *
2055  * This routine selects the channel with the closest center frequency.
2056  */
2057 static inline int ieee80211_freq_to_dsss_chan(int freq)
2058 {
2059         if ((freq >= 2410) && (freq < 2475))
2060                 return (freq - 2405) / 5;
2061         else if ((freq >= 2482) && (freq < 2487))
2062                 return 14;
2063         else
2064                 return -1;
2065 }
2066
2067 /**
2068  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2069  * @tu: the TUs
2070  */
2071 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2072 {
2073         return 1024 * tu;
2074 }
2075
2076 /**
2077  * ieee80211_check_tim - check if AID bit is set in TIM
2078  * @tim: the TIM IE
2079  * @tim_len: length of the TIM IE
2080  * @aid: the AID to look for
2081  */
2082 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2083                                        u8 tim_len, u16 aid)
2084 {
2085         u8 mask;
2086         u8 indexn0, indexn1, indexn2;
2087
2088         if (unlikely(!tim || tim_len < sizeof(*tim)))
2089                 return false;
2090
2091         aid &= 0x3fff;
2092         indexn0 = aid / 8;
2093         mask  = 1 << (aid & 7);
2094
2095         indexn1 = tim->bitmap_ctrl & 0xfe;
2096         indexn2 = tim_len + indexn1 - 4;
2097
2098         if (indexn0 < indexn1 || indexn0 > indexn2)
2099                 return false;
2100
2101         indexn0 -= indexn1;
2102
2103         return !!(tim->virtual_map[indexn0] & mask);
2104 }
2105
2106 #endif /* __LINUX_IEEE80211_H */