include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef __LINUX_IEEE80211_H
  16 #define __LINUX_IEEE80211_H
  17
  18 /*
  19  * DS bit usage
  20  *
  21  * TA = transmitter address
  22  * RA = receiver address
  23  * DA = destination address
  24  * SA = source address
  25  *
  26  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  27  * -----------------------------------------------------------------
  28  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  29  *  0       1       DA      BSSID   SA      -       AP -> STA
  30  *  1       0       BSSID   SA      DA      -       AP <- STA
  31  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  32  */
  33
  34 #define FCS_LEN 4
  35
  36 #define IEEE80211_FCTL_VERS             0x0003
  37 #define IEEE80211_FCTL_FTYPE            0x000c
  38 #define IEEE80211_FCTL_STYPE            0x00f0
  39 #define IEEE80211_FCTL_TODS             0x0100
  40 #define IEEE80211_FCTL_FROMDS           0x0200
  41 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  42 #define IEEE80211_FCTL_RETRY            0x0800
  43 #define IEEE80211_FCTL_PM               0x1000
  44 #define IEEE80211_FCTL_MOREDATA         0x2000
  45 #define IEEE80211_FCTL_PROTECTED        0x4000
  46 #define IEEE80211_FCTL_ORDER            0x8000
  47
  48 #define IEEE80211_SCTL_FRAG             0x000F
  49 #define IEEE80211_SCTL_SEQ              0xFFF0
  50
  51 #define IEEE80211_FTYPE_MGMT            0x0000
  52 #define IEEE80211_FTYPE_CTL             0x0004
  53 #define IEEE80211_FTYPE_DATA            0x0008
  54
  55 /* management */
  56 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  57 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  58 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  59 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  60 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  61 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  62 #define IEEE80211_STYPE_BEACON          0x0080
  63 #define IEEE80211_STYPE_ATIM            0x0090
  64 #define IEEE80211_STYPE_DISASSOC        0x00A0
  65 #define IEEE80211_STYPE_AUTH            0x00B0
  66 #define IEEE80211_STYPE_DEAUTH          0x00C0
  67 #define IEEE80211_STYPE_ACTION          0x00D0
  68
  69 /* control */
  70 #define IEEE80211_STYPE_BACK_REQ        0x0080
  71 #define IEEE80211_STYPE_BACK            0x0090
  72 #define IEEE80211_STYPE_PSPOLL          0x00A0
  73 #define IEEE80211_STYPE_RTS             0x00B0
  74 #define IEEE80211_STYPE_CTS             0x00C0
  75 #define IEEE80211_STYPE_ACK             0x00D0
  76 #define IEEE80211_STYPE_CFEND           0x00E0
  77 #define IEEE80211_STYPE_CFENDACK        0x00F0
  78
  79 /* data */
  80 #define IEEE80211_STYPE_DATA                    0x0000
  81 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  82 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  83 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  84 #define IEEE80211_STYPE_NULLFUNC                0x0040
  85 #define IEEE80211_STYPE_CFACK                   0x0050
  86 #define IEEE80211_STYPE_CFPOLL                  0x0060
  87 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  88 #define IEEE80211_STYPE_QOS_DATA                0x0080
  89 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  90 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  91 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  92 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  93 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  94 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  95 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  96
  97
  98 /* miscellaneous IEEE 802.11 constants */
  99 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 100 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 101 #define IEEE80211_MAX_AID               2007
 102 #define IEEE80211_MAX_TIM_LEN           251
 103 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 104    6.2.1.1.2.
 105
 106    802.11e clarifies the figure in section 7.1.2. The frame body is
 107    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 108 #define IEEE80211_MAX_DATA_LEN          2304
 109 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 110 #define IEEE80211_MAX_FRAME_LEN         2352
 111
 112 #define IEEE80211_MAX_SSID_LEN          32
 113
 114 #define IEEE80211_MAX_MESH_ID_LEN       32
 115
 116 #define IEEE80211_QOS_CTL_LEN           2
 117 /* 1d tag mask */
 118 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 119 /* TID mask */
 120 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 121 /* EOSP */
 122 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 123 /* ACK policy */
 124 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 125 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 126 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 127 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 128 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 129 /* A-MSDU 802.11n */
 130 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 131 /* Mesh Control 802.11s */
 132 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 133
 134 /* U-APSD queue for WMM IEs sent by AP */
 135 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 136 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 137
 138 /* U-APSD queues for WMM IEs sent by STA */
 139 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 140 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 141 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 142 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 143 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 144
 145 /* U-APSD max SP length for WMM IEs sent by STA */
 146 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 147 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 148 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 149 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 150 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 151 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 152
 153 #define IEEE80211_HT_CTL_LEN            4
 154
 155 struct ieee80211_hdr {
 156         __le16 frame_control;
 157         __le16 duration_id;
 158         u8 addr1[6];
 159         u8 addr2[6];
 160         u8 addr3[6];
 161         __le16 seq_ctrl;
 162         u8 addr4[6];
 163 } __attribute__ ((packed));
 164
 165 struct ieee80211_hdr_3addr {
 166         __le16 frame_control;
 167         __le16 duration_id;
 168         u8 addr1[6];
 169         u8 addr2[6];
 170         u8 addr3[6];
 171         __le16 seq_ctrl;
 172 } __attribute__ ((packed));
 173
 174 struct ieee80211_qos_hdr {
 175         __le16 frame_control;
 176         __le16 duration_id;
 177         u8 addr1[6];
 178         u8 addr2[6];
 179         u8 addr3[6];
 180         __le16 seq_ctrl;
 181         __le16 qos_ctrl;
 182 } __attribute__ ((packed));
 183
 184 /**
 185  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 186  * @fc: frame control bytes in little-endian byteorder
 187  */
 188 static inline int ieee80211_has_tods(__le16 fc)
 189 {
 190         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 191 }
 192
 193 /**
 194  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 195  * @fc: frame control bytes in little-endian byteorder
 196  */
 197 static inline int ieee80211_has_fromds(__le16 fc)
 198 {
 199         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 200 }
 201
 202 /**
 203  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 204  * @fc: frame control bytes in little-endian byteorder
 205  */
 206 static inline int ieee80211_has_a4(__le16 fc)
 207 {
 208         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 209         return (fc & tmp) == tmp;
 210 }
 211
 212 /**
 213  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 214  * @fc: frame control bytes in little-endian byteorder
 215  */
 216 static inline int ieee80211_has_morefrags(__le16 fc)
 217 {
 218         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 219 }
 220
 221 /**
 222  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 223  * @fc: frame control bytes in little-endian byteorder
 224  */
 225 static inline int ieee80211_has_retry(__le16 fc)
 226 {
 227         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 228 }
 229
 230 /**
 231  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 232  * @fc: frame control bytes in little-endian byteorder
 233  */
 234 static inline int ieee80211_has_pm(__le16 fc)
 235 {
 236         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 237 }
 238
 239 /**
 240  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 241  * @fc: frame control bytes in little-endian byteorder
 242  */
 243 static inline int ieee80211_has_moredata(__le16 fc)
 244 {
 245         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 246 }
 247
 248 /**
 249  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 250  * @fc: frame control bytes in little-endian byteorder
 251  */
 252 static inline int ieee80211_has_protected(__le16 fc)
 253 {
 254         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 255 }
 256
 257 /**
 258  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 259  * @fc: frame control bytes in little-endian byteorder
 260  */
 261 static inline int ieee80211_has_order(__le16 fc)
 262 {
 263         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 264 }
 265
 266 /**
 267  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 268  * @fc: frame control bytes in little-endian byteorder
 269  */
 270 static inline int ieee80211_is_mgmt(__le16 fc)
 271 {
 272         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 273                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 274 }
 275
 276 /**
 277  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 278  * @fc: frame control bytes in little-endian byteorder
 279  */
 280 static inline int ieee80211_is_ctl(__le16 fc)
 281 {
 282         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 283                cpu_to_le16(IEEE80211_FTYPE_CTL);
 284 }
 285
 286 /**
 287  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 288  * @fc: frame control bytes in little-endian byteorder
 289  */
 290 static inline int ieee80211_is_data(__le16 fc)
 291 {
 292         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 293                cpu_to_le16(IEEE80211_FTYPE_DATA);
 294 }
 295
 296 /**
 297  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 298  * @fc: frame control bytes in little-endian byteorder
 299  */
 300 static inline int ieee80211_is_data_qos(__le16 fc)
 301 {
 302         /*
 303          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 304          * to check the one bit
 305          */
 306         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 307                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 308 }
 309
 310 /**
 311  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 312  * @fc: frame control bytes in little-endian byteorder
 313  */
 314 static inline int ieee80211_is_data_present(__le16 fc)
 315 {
 316         /*
 317          * mask with 0x40 and test that that bit is clear to only return true
 318          * for the data-containing substypes.
 319          */
 320         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 321                cpu_to_le16(IEEE80211_FTYPE_DATA);
 322 }
 323
 324 /**
 325  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 326  * @fc: frame control bytes in little-endian byteorder
 327  */
 328 static inline int ieee80211_is_assoc_req(__le16 fc)
 329 {
 330         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 331                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 332 }
 333
 334 /**
 335  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 336  * @fc: frame control bytes in little-endian byteorder
 337  */
 338 static inline int ieee80211_is_assoc_resp(__le16 fc)
 339 {
 340         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 341                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 342 }
 343
 344 /**
 345  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 346  * @fc: frame control bytes in little-endian byteorder
 347  */
 348 static inline int ieee80211_is_reassoc_req(__le16 fc)
 349 {
 350         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 351                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 352 }
 353
 354 /**
 355  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 356  * @fc: frame control bytes in little-endian byteorder
 357  */
 358 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 359 {
 360         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 361                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 362 }
 363
 364 /**
 365  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 366  * @fc: frame control bytes in little-endian byteorder
 367  */
 368 static inline int ieee80211_is_probe_req(__le16 fc)
 369 {
 370         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 371                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 372 }
 373
 374 /**
 375  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 376  * @fc: frame control bytes in little-endian byteorder
 377  */
 378 static inline int ieee80211_is_probe_resp(__le16 fc)
 379 {
 380         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 381                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 382 }
 383
 384 /**
 385  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 386  * @fc: frame control bytes in little-endian byteorder
 387  */
 388 static inline int ieee80211_is_beacon(__le16 fc)
 389 {
 390         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 391                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 392 }
 393
 394 /**
 395  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 396  * @fc: frame control bytes in little-endian byteorder
 397  */
 398 static inline int ieee80211_is_atim(__le16 fc)
 399 {
 400         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 401                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 402 }
 403
 404 /**
 405  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 406  * @fc: frame control bytes in little-endian byteorder
 407  */
 408 static inline int ieee80211_is_disassoc(__le16 fc)
 409 {
 410         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 411                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 412 }
 413
 414 /**
 415  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 416  * @fc: frame control bytes in little-endian byteorder
 417  */
 418 static inline int ieee80211_is_auth(__le16 fc)
 419 {
 420         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 421                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 422 }
 423
 424 /**
 425  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 426  * @fc: frame control bytes in little-endian byteorder
 427  */
 428 static inline int ieee80211_is_deauth(__le16 fc)
 429 {
 430         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 431                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 432 }
 433
 434 /**
 435  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 436  * @fc: frame control bytes in little-endian byteorder
 437  */
 438 static inline int ieee80211_is_action(__le16 fc)
 439 {
 440         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 441                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 442 }
 443
 444 /**
 445  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 446  * @fc: frame control bytes in little-endian byteorder
 447  */
 448 static inline int ieee80211_is_back_req(__le16 fc)
 449 {
 450         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 451                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 452 }
 453
 454 /**
 455  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 456  * @fc: frame control bytes in little-endian byteorder
 457  */
 458 static inline int ieee80211_is_back(__le16 fc)
 459 {
 460         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 461                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 462 }
 463
 464 /**
 465  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 466  * @fc: frame control bytes in little-endian byteorder
 467  */
 468 static inline int ieee80211_is_pspoll(__le16 fc)
 469 {
 470         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 471                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 472 }
 473
 474 /**
 475  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 476  * @fc: frame control bytes in little-endian byteorder
 477  */
 478 static inline int ieee80211_is_rts(__le16 fc)
 479 {
 480         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 481                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 482 }
 483
 484 /**
 485  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 486  * @fc: frame control bytes in little-endian byteorder
 487  */
 488 static inline int ieee80211_is_cts(__le16 fc)
 489 {
 490         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 491                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 492 }
 493
 494 /**
 495  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 496  * @fc: frame control bytes in little-endian byteorder
 497  */
 498 static inline int ieee80211_is_ack(__le16 fc)
 499 {
 500         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 501                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 502 }
 503
 504 /**
 505  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 506  * @fc: frame control bytes in little-endian byteorder
 507  */
 508 static inline int ieee80211_is_cfend(__le16 fc)
 509 {
 510         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 511                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 512 }
 513
 514 /**
 515  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 516  * @fc: frame control bytes in little-endian byteorder
 517  */
 518 static inline int ieee80211_is_cfendack(__le16 fc)
 519 {
 520         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 521                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 522 }
 523
 524 /**
 525  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 526  * @fc: frame control bytes in little-endian byteorder
 527  */
 528 static inline int ieee80211_is_nullfunc(__le16 fc)
 529 {
 530         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 531                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 532 }
 533
 534 /**
 535  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 536  * @fc: frame control bytes in little-endian byteorder
 537  */
 538 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 539 {
 540         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 541                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 542 }
 543
 544 static inline unsigned int ieee80211_hdrlen(__le16 fc)
 545 {
 546         unsigned int hdrlen = 24;
 547
 548         if (ieee80211_has_a4(fc))
 549                 hdrlen = 30;
 550
 551         if (ieee80211_is_data_qos(fc)) {
 552                 hdrlen += IEEE80211_QOS_CTL_LEN;
 553                 if (ieee80211_has_order(fc))
 554                         hdrlen += IEEE80211_HT_CTL_LEN;
 555         }
 556
 557         return hdrlen;
 558 }
 559
 560 /**
 561  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 562  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 563  */
 564 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 565 {
 566         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 567 }
 568
 569 struct ieee80211s_hdr {
 570         u8 flags;
 571         u8 ttl;
 572         __le32 seqnum;
 573         u8 eaddr1[6];
 574         u8 eaddr2[6];
 575 } __attribute__ ((packed));
 576
 577 /* Mesh flags */
 578 #define MESH_FLAGS_AE_A4        0x1
 579 #define MESH_FLAGS_AE_A5_A6     0x2
 580 #define MESH_FLAGS_AE           0x3
 581 #define MESH_FLAGS_PS_DEEP      0x4
 582
 583 /**
 584  * struct ieee80211_quiet_ie
 585  *
 586  * This structure refers to "Quiet information element"
 587  */
 588 struct ieee80211_quiet_ie {
 589         u8 count;
 590         u8 period;
 591         __le16 duration;
 592         __le16 offset;
 593 } __attribute__ ((packed));
 594
 595 /**
 596  * struct ieee80211_msrment_ie
 597  *
 598  * This structure refers to "Measurement Request/Report information element"
 599  */
 600 struct ieee80211_msrment_ie {
 601         u8 token;
 602         u8 mode;
 603         u8 type;
 604         u8 request[0];
 605 } __attribute__ ((packed));
 606
 607 /**
 608  * struct ieee80211_channel_sw_ie
 609  *
 610  * This structure refers to "Channel Switch Announcement information element"
 611  */
 612 struct ieee80211_channel_sw_ie {
 613         u8 mode;
 614         u8 new_ch_num;
 615         u8 count;
 616 } __attribute__ ((packed));
 617
 618 /**
 619  * struct ieee80211_tim
 620  *
 621  * This structure refers to "Traffic Indication Map information element"
 622  */
 623 struct ieee80211_tim_ie {
 624         u8 dtim_count;
 625         u8 dtim_period;
 626         u8 bitmap_ctrl;
 627         /* variable size: 1 - 251 bytes */
 628         u8 virtual_map[1];
 629 } __attribute__ ((packed));
 630
 631 /**
 632  * struct ieee80211_meshconf_ie
 633  *
 634  * This structure refers to "Mesh Configuration information element"
 635  */
 636 struct ieee80211_meshconf_ie {
 637         u8 meshconf_psel;
 638         u8 meshconf_pmetric;
 639         u8 meshconf_congest;
 640         u8 meshconf_synch;
 641         u8 meshconf_auth;
 642         u8 meshconf_form;
 643         u8 meshconf_cap;
 644 } __attribute__ ((packed));
 645
 646 /**
 647  * struct ieee80211_rann_ie
 648  *
 649  * This structure refers to "Root Announcement information element"
 650  */
 651 struct ieee80211_rann_ie {
 652         u8 rann_flags;
 653         u8 rann_hopcount;
 654         u8 rann_ttl;
 655         u8 rann_addr[6];
 656         u32 rann_seq;
 657         u32 rann_interval;
 658         u32 rann_metric;
 659 } __attribute__ ((packed));
 660
 661 enum ieee80211_rann_flags {
 662         RANN_FLAG_IS_GATE = 1 << 0,
 663 };
 664
 665 #define WLAN_SA_QUERY_TR_ID_LEN 2
 666
 667 struct ieee80211_mgmt {
 668         __le16 frame_control;
 669         __le16 duration;
 670         u8 da[6];
 671         u8 sa[6];
 672         u8 bssid[6];
 673         __le16 seq_ctrl;
 674         union {
 675                 struct {
 676                         __le16 auth_alg;
 677                         __le16 auth_transaction;
 678                         __le16 status_code;
 679                         /* possibly followed by Challenge text */
 680                         u8 variable[0];
 681                 } __attribute__ ((packed)) auth;
 682                 struct {
 683                         __le16 reason_code;
 684                 } __attribute__ ((packed)) deauth;
 685                 struct {
 686                         __le16 capab_info;
 687                         __le16 listen_interval;
 688                         /* followed by SSID and Supported rates */
 689                         u8 variable[0];
 690                 } __attribute__ ((packed)) assoc_req;
 691                 struct {
 692                         __le16 capab_info;
 693                         __le16 status_code;
 694                         __le16 aid;
 695                         /* followed by Supported rates */
 696                         u8 variable[0];
 697                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 698                 struct {
 699                         __le16 capab_info;
 700                         __le16 listen_interval;
 701                         u8 current_ap[6];
 702                         /* followed by SSID and Supported rates */
 703                         u8 variable[0];
 704                 } __attribute__ ((packed)) reassoc_req;
 705                 struct {
 706                         __le16 reason_code;
 707                 } __attribute__ ((packed)) disassoc;
 708                 struct {
 709                         __le64 timestamp;
 710                         __le16 beacon_int;
 711                         __le16 capab_info;
 712                         /* followed by some of SSID, Supported rates,
 713                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 714                         u8 variable[0];
 715                 } __attribute__ ((packed)) beacon;
 716                 struct {
 717                         /* only variable items: SSID, Supported rates */
 718                         u8 variable[0];
 719                 } __attribute__ ((packed)) probe_req;
 720                 struct {
 721                         __le64 timestamp;
 722                         __le16 beacon_int;
 723                         __le16 capab_info;
 724                         /* followed by some of SSID, Supported rates,
 725                          * FH Params, DS Params, CF Params, IBSS Params */
 726                         u8 variable[0];
 727                 } __attribute__ ((packed)) probe_resp;
 728                 struct {
 729                         u8 category;
 730                         union {
 731                                 struct {
 732                                         u8 action_code;
 733                                         u8 dialog_token;
 734                                         u8 status_code;
 735                                         u8 variable[0];
 736                                 } __attribute__ ((packed)) wme_action;
 737                                 struct{
 738                                         u8 action_code;
 739                                         u8 element_id;
 740                                         u8 length;
 741                                         struct ieee80211_channel_sw_ie sw_elem;
 742                                 } __attribute__((packed)) chan_switch;
 743                                 struct{
 744                                         u8 action_code;
 745                                         u8 dialog_token;
 746                                         u8 element_id;
 747                                         u8 length;
 748                                         struct ieee80211_msrment_ie msr_elem;
 749                                 } __attribute__((packed)) measurement;
 750                                 struct{
 751                                         u8 action_code;
 752                                         u8 dialog_token;
 753                                         __le16 capab;
 754                                         __le16 timeout;
 755                                         __le16 start_seq_num;
 756                                 } __attribute__((packed)) addba_req;
 757                                 struct{
 758                                         u8 action_code;
 759                                         u8 dialog_token;
 760                                         __le16 status;
 761                                         __le16 capab;
 762                                         __le16 timeout;
 763                                 } __attribute__((packed)) addba_resp;
 764                                 struct{
 765                                         u8 action_code;
 766                                         __le16 params;
 767                                         __le16 reason_code;
 768                                 } __attribute__((packed)) delba;
 769                                 struct {
 770                                         u8 action_code;
 771                                         u8 variable[0];
 772                                 } __attribute__((packed)) self_prot;
 773                                 struct{
 774                                         u8 action_code;
 775                                         u8 variable[0];
 776                                 } __attribute__((packed)) mesh_action;
 777                                 struct {
 778                                         u8 action;
 779                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 780                                 } __attribute__ ((packed)) sa_query;
 781                                 struct {
 782                                         u8 action;
 783                                         u8 smps_control;
 784                                 } __attribute__ ((packed)) ht_smps;
 785                                 struct {
 786                                         u8 action_code;
 787                                         u8 dialog_token;
 788                                         __le16 capability;
 789                                         u8 variable[0];
 790                                 } __packed tdls_discover_resp;
 791                         } u;
 792                 } __attribute__ ((packed)) action;
 793         } u;
 794 } __attribute__ ((packed));
 795
 796 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 797 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 798
 799 /* mgmt header + 1 byte category code */
 800 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 801
 802
 803 /* Management MIC information element (IEEE 802.11w) */
 804 struct ieee80211_mmie {
 805         u8 element_id;
 806         u8 length;
 807         __le16 key_id;
 808         u8 sequence_number[6];
 809         u8 mic[8];
 810 } __attribute__ ((packed));
 811
 812 struct ieee80211_vendor_ie {
 813         u8 element_id;
 814         u8 len;
 815         u8 oui[3];
 816         u8 oui_type;
 817 } __packed;
 818
 819 /* Control frames */
 820 struct ieee80211_rts {
 821         __le16 frame_control;
 822         __le16 duration;
 823         u8 ra[6];
 824         u8 ta[6];
 825 } __attribute__ ((packed));
 826
 827 struct ieee80211_cts {
 828         __le16 frame_control;
 829         __le16 duration;
 830         u8 ra[6];
 831 } __attribute__ ((packed));
 832
 833 struct ieee80211_pspoll {
 834         __le16 frame_control;
 835         __le16 aid;
 836         u8 bssid[6];
 837         u8 ta[6];
 838 } __attribute__ ((packed));
 839
 840 /* TDLS */
 841
 842 /* Link-id information element */
 843 struct ieee80211_tdls_lnkie {
 844         u8 ie_type; /* Link Identifier IE */
 845         u8 ie_len;
 846         u8 bssid[6];
 847         u8 init_sta[6];
 848         u8 resp_sta[6];
 849 } __packed;
 850
 851 struct ieee80211_tdls_data {
 852         u8 da[6];
 853         u8 sa[6];
 854         __be16 ether_type;
 855         u8 payload_type;
 856         u8 category;
 857         u8 action_code;
 858         union {
 859                 struct {
 860                         u8 dialog_token;
 861                         __le16 capability;
 862                         u8 variable[0];
 863                 } __packed setup_req;
 864                 struct {
 865                         __le16 status_code;
 866                         u8 dialog_token;
 867                         __le16 capability;
 868                         u8 variable[0];
 869                 } __packed setup_resp;
 870                 struct {
 871                         __le16 status_code;
 872                         u8 dialog_token;
 873                         u8 variable[0];
 874                 } __packed setup_cfm;
 875                 struct {
 876                         __le16 reason_code;
 877                         u8 variable[0];
 878                 } __packed teardown;
 879                 struct {
 880                         u8 dialog_token;
 881                         u8 variable[0];
 882                 } __packed discover_req;
 883         } u;
 884 } __packed;
 885
 886 /**
 887  * struct ieee80211_bar - HT Block Ack Request
 888  *
 889  * This structure refers to "HT BlockAckReq" as
 890  * described in 802.11n draft section 7.2.1.7.1
 891  */
 892 struct ieee80211_bar {
 893         __le16 frame_control;
 894         __le16 duration;
 895         __u8 ra[6];
 896         __u8 ta[6];
 897         __le16 control;
 898         __le16 start_seq_num;
 899 } __attribute__((packed)) __aligned(4);
 900
 901 /* 802.11 BA(R) control masks */
 902 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 903 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 904 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 905 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 906 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 907
 908 /**
 909  * struct ieee80211_ba - HT Block Ack
 910  *
 911  * This structure refers to "HT BlockAck" as
 912  * described in 802.11n draft section 7.2.1.8.1
 913  */
 914 struct ieee80211_ba {
 915         __le16 frame_control;
 916         __le16 duration;
 917         u8 ra[6];
 918         u8 ta[6];
 919         __le16 control;
 920
 921         __le16 start_seq_num;
 922         u8 bitmap[8];
 923 } __attribute__((packed));
 924
 925 #define IEEE80211_HT_MCS_MASK_LEN               10
 926
 927 /**
 928  * struct ieee80211_mcs_info - MCS information
 929  * @rx_mask: RX mask
 930  * @rx_highest: highest supported RX rate. If set represents
 931  *      the highest supported RX data rate in units of 1 Mbps.
 932  *      If this field is 0 this value should not be used to
 933  *      consider the highest RX data rate supported.
 934  * @tx_params: TX parameters
 935  */
 936 struct ieee80211_mcs_info {
 937         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 938         __le16 rx_highest;
 939         u8 tx_params;
 940         u8 reserved[3];
 941 } __attribute__((packed));
 942
 943 /* 802.11n HT capability MSC set */
 944 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 945 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 946 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 947 /* value 0 == 1 stream etc */
 948 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 949 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 950 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 951 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 952
 953 /*
 954  * 802.11n D5.0 20.3.5 / 20.6 says:
 955  * - indices 0 to 7 and 32 are single spatial stream
 956  * - 8 to 31 are multiple spatial streams using equal modulation
 957  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 958  * - remainder are multiple spatial streams using unequal modulation
 959  */
 960 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 961 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 962         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 963
 964 /**
 965  * struct ieee80211_ht_cap - HT capabilities
 966  *
 967  * This structure is the "HT capabilities element" as
 968  * described in 802.11n D5.0 7.3.2.57
 969  */
 970 struct ieee80211_ht_cap {
 971         __le16 cap_info;
 972         u8 ampdu_params_info;
 973
 974         /* 16 bytes MCS information */
 975         struct ieee80211_mcs_info mcs;
 976
 977         __le16 extended_ht_cap_info;
 978         __le32 tx_BF_cap_info;
 979         u8 antenna_selection_info;
 980 } __attribute__ ((packed));
 981
 982 /* 802.11n HT capabilities masks (for cap_info) */
 983 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 984 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 985 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 986 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 987 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 988 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 989 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 990 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 991 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 992 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 993 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 994 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 995 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 996 #define IEEE80211_HT_CAP_RESERVED               0x2000
 997 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 998 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 999
1000 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1001 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1002 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1003 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1004 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1005 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1006 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1007 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1008
1009 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1010 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1011 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1012 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1013
1014 /*
1015  * Maximum length of AMPDU that the STA can receive.
1016  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1017  */
1018 enum ieee80211_max_ampdu_length_exp {
1019         IEEE80211_HT_MAX_AMPDU_8K = 0,
1020         IEEE80211_HT_MAX_AMPDU_16K = 1,
1021         IEEE80211_HT_MAX_AMPDU_32K = 2,
1022         IEEE80211_HT_MAX_AMPDU_64K = 3
1023 };
1024
1025 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1026
1027 /* Minimum MPDU start spacing */
1028 enum ieee80211_min_mpdu_spacing {
1029         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1030         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1031         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1032         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1033         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1034         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1035         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1036         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1037 };
1038
1039 /**
1040  * struct ieee80211_ht_info - HT information
1041  *
1042  * This structure is the "HT information element" as
1043  * described in 802.11n D5.0 7.3.2.58
1044  */
1045 struct ieee80211_ht_info {
1046         u8 control_chan;
1047         u8 ht_param;
1048         __le16 operation_mode;
1049         __le16 stbc_param;
1050         u8 basic_set[16];
1051 } __attribute__ ((packed));
1052
1053 /* for ht_param */
1054 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1055 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1056 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1057 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1058 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1059 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1060 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
1061 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
1062
1063 /* for operation_mode */
1064 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1065 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1066 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1067 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1068 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1069 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1070 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1071
1072 /* for stbc_param */
1073 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1074 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1075 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1076 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1077 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1078 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1079
1080
1081 /* block-ack parameters */
1082 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1083 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1084 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1085 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1086 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1087
1088 /*
1089  * A-PMDU buffer sizes
1090  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1091  */
1092 #define IEEE80211_MIN_AMPDU_BUF 0x8
1093 #define IEEE80211_MAX_AMPDU_BUF 0x40
1094
1095
1096 /* Spatial Multiplexing Power Save Modes (for capability) */
1097 #define WLAN_HT_CAP_SM_PS_STATIC        0
1098 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1099 #define WLAN_HT_CAP_SM_PS_INVALID       2
1100 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1101
1102 /* for SM power control field lower two bits */
1103 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1104 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1105 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1106
1107 /* Authentication algorithms */
1108 #define WLAN_AUTH_OPEN 0
1109 #define WLAN_AUTH_SHARED_KEY 1
1110 #define WLAN_AUTH_FT 2
1111 #define WLAN_AUTH_SAE 3
1112 #define WLAN_AUTH_LEAP 128
1113
1114 #define WLAN_AUTH_CHALLENGE_LEN 128
1115
1116 #define WLAN_CAPABILITY_ESS             (1<<0)
1117 #define WLAN_CAPABILITY_IBSS            (1<<1)
1118
1119 /*
1120  * A mesh STA sets the ESS and IBSS capability bits to zero.
1121  * however, this holds true for p2p probe responses (in the p2p_find
1122  * phase) as well.
1123  */
1124 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1125         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1126
1127 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1128 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1129 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1130 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1131 #define WLAN_CAPABILITY_PBCC            (1<<6)
1132 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1133
1134 /* 802.11h */
1135 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1136 #define WLAN_CAPABILITY_QOS             (1<<9)
1137 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1138 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1139 /* measurement */
1140 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1141 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1142 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1143
1144 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1145 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1146 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1147
1148
1149 /* 802.11g ERP information element */
1150 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1151 #define WLAN_ERP_USE_PROTECTION (1<<1)
1152 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1153
1154 /* WLAN_ERP_BARKER_PREAMBLE values */
1155 enum {
1156         WLAN_ERP_PREAMBLE_SHORT = 0,
1157         WLAN_ERP_PREAMBLE_LONG = 1,
1158 };
1159
1160 /* Status codes */
1161 enum ieee80211_statuscode {
1162         WLAN_STATUS_SUCCESS = 0,
1163         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1164         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1165         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1166         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1167         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1168         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1169         WLAN_STATUS_CHALLENGE_FAIL = 15,
1170         WLAN_STATUS_AUTH_TIMEOUT = 16,
1171         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1172         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1173         /* 802.11b */
1174         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1175         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1176         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1177         /* 802.11h */
1178         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1179         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1180         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1181         /* 802.11g */
1182         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1183         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1184         /* 802.11w */
1185         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1186         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1187         /* 802.11i */
1188         WLAN_STATUS_INVALID_IE = 40,
1189         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1190         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1191         WLAN_STATUS_INVALID_AKMP = 43,
1192         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1193         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1194         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1195         /* 802.11e */
1196         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1197         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1198         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1199         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1200         WLAN_STATUS_REQUEST_DECLINED = 37,
1201         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1202         WLAN_STATUS_CHANGE_TSPEC = 39,
1203         WLAN_STATUS_WAIT_TS_DELAY = 47,
1204         WLAN_STATUS_NO_DIRECT_LINK = 48,
1205         WLAN_STATUS_STA_NOT_PRESENT = 49,
1206         WLAN_STATUS_STA_NOT_QSTA = 50,
1207         /* 802.11s */
1208         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1209         WLAN_STATUS_FCG_NOT_SUPP = 78,
1210         WLAN_STATUS_STA_NO_TBTT = 78,
1211 };
1212
1213
1214 /* Reason codes */
1215 enum ieee80211_reasoncode {
1216         WLAN_REASON_UNSPECIFIED = 1,
1217         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1218         WLAN_REASON_DEAUTH_LEAVING = 3,
1219         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1220         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1221         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1222         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1223         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1224         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1225         /* 802.11h */
1226         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1227         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1228         /* 802.11i */
1229         WLAN_REASON_INVALID_IE = 13,
1230         WLAN_REASON_MIC_FAILURE = 14,
1231         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1232         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1233         WLAN_REASON_IE_DIFFERENT = 17,
1234         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1235         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1236         WLAN_REASON_INVALID_AKMP = 20,
1237         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1238         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1239         WLAN_REASON_IEEE8021X_FAILED = 23,
1240         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1241         /* 802.11e */
1242         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1243         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1244         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1245         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1246         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1247         WLAN_REASON_QSTA_NOT_USE = 37,
1248         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1249         WLAN_REASON_QSTA_TIMEOUT = 39,
1250         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1251         /* 802.11s */
1252         WLAN_REASON_MESH_PEER_CANCELED = 52,
1253         WLAN_REASON_MESH_MAX_PEERS = 53,
1254         WLAN_REASON_MESH_CONFIG = 54,
1255         WLAN_REASON_MESH_CLOSE = 55,
1256         WLAN_REASON_MESH_MAX_RETRIES = 56,
1257         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1258         WLAN_REASON_MESH_INVALID_GTK = 58,
1259         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1260         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1261         WLAN_REASON_MESH_PATH_ERROR = 61,
1262         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1263         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1264         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1265         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1266         WLAN_REASON_MESH_CHAN = 66,
1267 };
1268
1269
1270 /* Information Element IDs */
1271 enum ieee80211_eid {
1272         WLAN_EID_SSID = 0,
1273         WLAN_EID_SUPP_RATES = 1,
1274         WLAN_EID_FH_PARAMS = 2,
1275         WLAN_EID_DS_PARAMS = 3,
1276         WLAN_EID_CF_PARAMS = 4,
1277         WLAN_EID_TIM = 5,
1278         WLAN_EID_IBSS_PARAMS = 6,
1279         WLAN_EID_CHALLENGE = 16,
1280
1281         WLAN_EID_COUNTRY = 7,
1282         WLAN_EID_HP_PARAMS = 8,
1283         WLAN_EID_HP_TABLE = 9,
1284         WLAN_EID_REQUEST = 10,
1285
1286         WLAN_EID_QBSS_LOAD = 11,
1287         WLAN_EID_EDCA_PARAM_SET = 12,
1288         WLAN_EID_TSPEC = 13,
1289         WLAN_EID_TCLAS = 14,
1290         WLAN_EID_SCHEDULE = 15,
1291         WLAN_EID_TS_DELAY = 43,
1292         WLAN_EID_TCLAS_PROCESSING = 44,
1293         WLAN_EID_QOS_CAPA = 46,
1294         /* 802.11z */
1295         WLAN_EID_LINK_ID = 101,
1296         /* 802.11s */
1297         WLAN_EID_MESH_CONFIG = 113,
1298         WLAN_EID_MESH_ID = 114,
1299         WLAN_EID_LINK_METRIC_REPORT = 115,
1300         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1301         WLAN_EID_PEER_MGMT = 117,
1302         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1303         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1304         WLAN_EID_BEACON_TIMING = 120,
1305         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1306         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1307         WLAN_EID_MCCAOP_ADVERT = 123,
1308         WLAN_EID_MCCAOP_TEARDOWN = 124,
1309         WLAN_EID_GANN = 125,
1310         WLAN_EID_RANN = 126,
1311         WLAN_EID_PREQ = 130,
1312         WLAN_EID_PREP = 131,
1313         WLAN_EID_PERR = 132,
1314         WLAN_EID_PXU = 137,
1315         WLAN_EID_PXUC = 138,
1316         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1317         WLAN_EID_MIC = 140,
1318
1319         WLAN_EID_PWR_CONSTRAINT = 32,
1320         WLAN_EID_PWR_CAPABILITY = 33,
1321         WLAN_EID_TPC_REQUEST = 34,
1322         WLAN_EID_TPC_REPORT = 35,
1323         WLAN_EID_SUPPORTED_CHANNELS = 36,
1324         WLAN_EID_CHANNEL_SWITCH = 37,
1325         WLAN_EID_MEASURE_REQUEST = 38,
1326         WLAN_EID_MEASURE_REPORT = 39,
1327         WLAN_EID_QUIET = 40,
1328         WLAN_EID_IBSS_DFS = 41,
1329
1330         WLAN_EID_ERP_INFO = 42,
1331         WLAN_EID_EXT_SUPP_RATES = 50,
1332
1333         WLAN_EID_HT_CAPABILITY = 45,
1334         WLAN_EID_HT_INFORMATION = 61,
1335
1336         WLAN_EID_RSN = 48,
1337         WLAN_EID_MMIE = 76,
1338         WLAN_EID_WPA = 221,
1339         WLAN_EID_GENERIC = 221,
1340         WLAN_EID_VENDOR_SPECIFIC = 221,
1341         WLAN_EID_QOS_PARAMETER = 222,
1342
1343         WLAN_EID_AP_CHAN_REPORT = 51,
1344         WLAN_EID_NEIGHBOR_REPORT = 52,
1345         WLAN_EID_RCPI = 53,
1346         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1347         WLAN_EID_ANTENNA_INFO = 64,
1348         WLAN_EID_RSNI = 65,
1349         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1350         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1351         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1352         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1353         WLAN_EID_MULTIPLE_BSSID = 71,
1354         WLAN_EID_BSS_COEX_2040 = 72,
1355         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1356         WLAN_EID_EXT_CAPABILITY = 127,
1357
1358         WLAN_EID_MOBILITY_DOMAIN = 54,
1359         WLAN_EID_FAST_BSS_TRANSITION = 55,
1360         WLAN_EID_TIMEOUT_INTERVAL = 56,
1361         WLAN_EID_RIC_DATA = 57,
1362         WLAN_EID_RIC_DESCRIPTOR = 75,
1363
1364         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1365         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1366         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1367 };
1368
1369 /* Action category code */
1370 enum ieee80211_category {
1371         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1372         WLAN_CATEGORY_QOS = 1,
1373         WLAN_CATEGORY_DLS = 2,
1374         WLAN_CATEGORY_BACK = 3,
1375         WLAN_CATEGORY_PUBLIC = 4,
1376         WLAN_CATEGORY_HT = 7,
1377         WLAN_CATEGORY_SA_QUERY = 8,
1378         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1379         WLAN_CATEGORY_TDLS = 12,
1380         WLAN_CATEGORY_MESH_ACTION = 13,
1381         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1382         WLAN_CATEGORY_SELF_PROTECTED = 15,
1383         WLAN_CATEGORY_WMM = 17,
1384         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1385         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1386 };
1387
1388 /* SPECTRUM_MGMT action code */
1389 enum ieee80211_spectrum_mgmt_actioncode {
1390         WLAN_ACTION_SPCT_MSR_REQ = 0,
1391         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1392         WLAN_ACTION_SPCT_TPC_REQ = 2,
1393         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1394         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1395 };
1396
1397 /* HT action codes */
1398 enum ieee80211_ht_actioncode {
1399         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1400         WLAN_HT_ACTION_SMPS = 1,
1401         WLAN_HT_ACTION_PSMP = 2,
1402         WLAN_HT_ACTION_PCO_PHASE = 3,
1403         WLAN_HT_ACTION_CSI = 4,
1404         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1405         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1406         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1407 };
1408
1409 /* Self Protected Action codes */
1410 enum ieee80211_self_protected_actioncode {
1411         WLAN_SP_RESERVED = 0,
1412         WLAN_SP_MESH_PEERING_OPEN = 1,
1413         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1414         WLAN_SP_MESH_PEERING_CLOSE = 3,
1415         WLAN_SP_MGK_INFORM = 4,
1416         WLAN_SP_MGK_ACK = 5,
1417 };
1418
1419 /* Mesh action codes */
1420 enum ieee80211_mesh_actioncode {
1421         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1422         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1423         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1424         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1425         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1426         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1427         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1428         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1429         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1430         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1431         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1432 };
1433
1434 /* Security key length */
1435 enum ieee80211_key_len {
1436         WLAN_KEY_LEN_WEP40 = 5,
1437         WLAN_KEY_LEN_WEP104 = 13,
1438         WLAN_KEY_LEN_CCMP = 16,
1439         WLAN_KEY_LEN_TKIP = 32,
1440         WLAN_KEY_LEN_AES_CMAC = 16,
1441 };
1442
1443 /* Public action codes */
1444 enum ieee80211_pub_actioncode {
1445         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1446 };
1447
1448 /* TDLS action codes */
1449 enum ieee80211_tdls_actioncode {
1450         WLAN_TDLS_SETUP_REQUEST = 0,
1451         WLAN_TDLS_SETUP_RESPONSE = 1,
1452         WLAN_TDLS_SETUP_CONFIRM = 2,
1453         WLAN_TDLS_TEARDOWN = 3,
1454         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1455         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1456         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1457         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1458         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1459         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1460         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1461 };
1462
1463 /*
1464  * TDLS capabililites to be enabled in the 5th byte of the
1465  * @WLAN_EID_EXT_CAPABILITY information element
1466  */
1467 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1468 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1469
1470 /* TDLS specific payload type in the LLC/SNAP header */
1471 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1472
1473 /**
1474  * enum - mesh path selection protocol identifier
1475  *
1476  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1477  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1478  * be specified in a vendor specific information element
1479  */
1480 enum {
1481         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1482         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1483 };
1484
1485 /**
1486  * enum - mesh path selection metric identifier
1487  *
1488  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1489  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1490  * specified in a vendor specific information element
1491  */
1492 enum {
1493         IEEE80211_PATH_METRIC_AIRTIME = 0,
1494         IEEE80211_PATH_METRIC_VENDOR = 255,
1495 };
1496
1497
1498 /*
1499  * IEEE 802.11-2007 7.3.2.9 Country information element
1500  *
1501  * Minimum length is 8 octets, ie len must be evenly
1502  * divisible by 2
1503  */
1504
1505 /* Although the spec says 8 I'm seeing 6 in practice */
1506 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1507
1508 /* The Country String field of the element shall be 3 octets in length */
1509 #define IEEE80211_COUNTRY_STRING_LEN    3
1510
1511 /*
1512  * For regulatory extension stuff see IEEE 802.11-2007
1513  * Annex I (page 1141) and Annex J (page 1147). Also
1514  * review 7.3.2.9.
1515  *
1516  * When dot11RegulatoryClassesRequired is true and the
1517  * first_channel/reg_extension_id is >= 201 then the IE
1518  * compromises of the 'ext' struct represented below:
1519  *
1520  *  - Regulatory extension ID - when generating IE this just needs
1521  *    to be monotonically increasing for each triplet passed in
1522  *    the IE
1523  *  - Regulatory class - index into set of rules
1524  *  - Coverage class - index into air propagation time (Table 7-27),
1525  *    in microseconds, you can compute the air propagation time from
1526  *    the index by multiplying by 3, so index 10 yields a propagation
1527  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1528  *    yet. A value of 0 inicates air propagation of <= 1 us.
1529  *
1530  *  See also Table I.2 for Emission limit sets and table
1531  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1532  *  a reg_class to an emission limit set and behavior limit set.
1533  */
1534 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1535
1536 /*
1537  *  Channels numbers in the IE must be monotonically increasing
1538  *  if dot11RegulatoryClassesRequired is not true.
1539  *
1540  *  If dot11RegulatoryClassesRequired is true consecutive
1541  *  subband triplets following a regulatory triplet shall
1542  *  have monotonically increasing first_channel number fields.
1543  *
1544  *  Channel numbers shall not overlap.
1545  *
1546  *  Note that max_power is signed.
1547  */
1548 struct ieee80211_country_ie_triplet {
1549         union {
1550                 struct {
1551                         u8 first_channel;
1552                         u8 num_channels;
1553                         s8 max_power;
1554                 } __attribute__ ((packed)) chans;
1555                 struct {
1556                         u8 reg_extension_id;
1557                         u8 reg_class;
1558                         u8 coverage_class;
1559                 } __attribute__ ((packed)) ext;
1560         };
1561 } __attribute__ ((packed));
1562
1563 enum ieee80211_timeout_interval_type {
1564         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1565         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1566         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1567 };
1568
1569 /* BACK action code */
1570 enum ieee80211_back_actioncode {
1571         WLAN_ACTION_ADDBA_REQ = 0,
1572         WLAN_ACTION_ADDBA_RESP = 1,
1573         WLAN_ACTION_DELBA = 2,
1574 };
1575
1576 /* BACK (block-ack) parties */
1577 enum ieee80211_back_parties {
1578         WLAN_BACK_RECIPIENT = 0,
1579         WLAN_BACK_INITIATOR = 1,
1580 };
1581
1582 /* SA Query action */
1583 enum ieee80211_sa_query_action {
1584         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1585         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1586 };
1587
1588
1589 /* cipher suite selectors */
1590 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1591 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1592 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1593 /* reserved:                            0x000FAC03 */
1594 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1595 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1596 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1597
1598 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1599
1600 /* AKM suite selectors */
1601 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1602 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1603 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1604 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1605
1606 #define WLAN_MAX_KEY_LEN                32
1607
1608 #define WLAN_PMKID_LEN                  16
1609
1610 #define WLAN_OUI_WFA                    0x506f9a
1611 #define WLAN_OUI_TYPE_WFA_P2P           9
1612
1613 /*
1614  * WMM/802.11e Tspec Element
1615  */
1616 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1617 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1618
1619 enum ieee80211_tspec_status_code {
1620         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1621         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1622 };
1623
1624 struct ieee80211_tspec_ie {
1625         u8 element_id;
1626         u8 len;
1627         u8 oui[3];
1628         u8 oui_type;
1629         u8 oui_subtype;
1630         u8 version;
1631         __le16 tsinfo;
1632         u8 tsinfo_resvd;
1633         __le16 nominal_msdu;
1634         __le16 max_msdu;
1635         __le32 min_service_int;
1636         __le32 max_service_int;
1637         __le32 inactivity_int;
1638         __le32 suspension_int;
1639         __le32 service_start_time;
1640         __le32 min_data_rate;
1641         __le32 mean_data_rate;
1642         __le32 peak_data_rate;
1643         __le32 max_burst_size;
1644         __le32 delay_bound;
1645         __le32 min_phy_rate;
1646         __le16 sba;
1647         __le16 medium_time;
1648 } __packed;
1649
1650 /**
1651  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1652  * @hdr: the frame
1653  *
1654  * The qos ctrl bytes come after the frame_control, duration, seq_num
1655  * and 3 or 4 addresses of length ETH_ALEN.
1656  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1657  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1658  */
1659 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1660 {
1661         if (ieee80211_has_a4(hdr->frame_control))
1662                 return (u8 *)hdr + 30;
1663         else
1664                 return (u8 *)hdr + 24;
1665 }
1666
1667 /**
1668  * ieee80211_get_SA - get pointer to SA
1669  * @hdr: the frame
1670  *
1671  * Given an 802.11 frame, this function returns the offset
1672  * to the source address (SA). It does not verify that the
1673  * header is long enough to contain the address, and the
1674  * header must be long enough to contain the frame control
1675  * field.
1676  */
1677 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1678 {
1679         if (ieee80211_has_a4(hdr->frame_control))
1680                 return hdr->addr4;
1681         if (ieee80211_has_fromds(hdr->frame_control))
1682                 return hdr->addr3;
1683         return hdr->addr2;
1684 }
1685
1686 /**
1687  * ieee80211_get_DA - get pointer to DA
1688  * @hdr: the frame
1689  *
1690  * Given an 802.11 frame, this function returns the offset
1691  * to the destination address (DA). It does not verify that
1692  * the header is long enough to contain the address, and the
1693  * header must be long enough to contain the frame control
1694  * field.
1695  */
1696 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1697 {
1698         if (ieee80211_has_tods(hdr->frame_control))
1699                 return hdr->addr3;
1700         else
1701                 return hdr->addr1;
1702 }
1703
1704 /**
1705  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1706  * @hdr: the frame (buffer must include at least the first octet of payload)
1707  */
1708 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1709 {
1710         if (ieee80211_is_disassoc(hdr->frame_control) ||
1711             ieee80211_is_deauth(hdr->frame_control))
1712                 return true;
1713
1714         if (ieee80211_is_action(hdr->frame_control)) {
1715                 u8 *category;
1716
1717                 /*
1718                  * Action frames, excluding Public Action frames, are Robust
1719                  * Management Frames. However, if we are looking at a Protected
1720                  * frame, skip the check since the data may be encrypted and
1721                  * the frame has already been found to be a Robust Management
1722                  * Frame (by the other end).
1723                  */
1724                 if (ieee80211_has_protected(hdr->frame_control))
1725                         return true;
1726                 category = ((u8 *) hdr) + 24;
1727                 return *category != WLAN_CATEGORY_PUBLIC &&
1728                         *category != WLAN_CATEGORY_HT &&
1729                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1730                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1731         }
1732
1733         return false;
1734 }
1735
1736 /**
1737  * ieee80211_is_public_action - check if frame is a public action frame
1738  * @hdr: the frame
1739  * @len: length of the frame
1740  */
1741 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1742                                               size_t len)
1743 {
1744         struct ieee80211_mgmt *mgmt = (void *)hdr;
1745
1746         if (len < IEEE80211_MIN_ACTION_SIZE)
1747                 return false;
1748         if (!ieee80211_is_action(hdr->frame_control))
1749                 return false;
1750         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1751 }
1752
1753 /**
1754  * ieee80211_fhss_chan_to_freq - get channel frequency
1755  * @channel: the FHSS channel
1756  *
1757  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1758  * Ref IEEE 802.11-2007 section 14.6
1759  */
1760 static inline int ieee80211_fhss_chan_to_freq(int channel)
1761 {
1762         if ((channel > 1) && (channel < 96))
1763                 return channel + 2400;
1764         else
1765                 return -1;
1766 }
1767
1768 /**
1769  * ieee80211_freq_to_fhss_chan - get channel
1770  * @freq: the channels frequency
1771  *
1772  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1773  * Ref IEEE 802.11-2007 section 14.6
1774  */
1775 static inline int ieee80211_freq_to_fhss_chan(int freq)
1776 {
1777         if ((freq > 2401) && (freq < 2496))
1778                 return freq - 2400;
1779         else
1780                 return -1;
1781 }
1782
1783 /**
1784  * ieee80211_dsss_chan_to_freq - get channel center frequency
1785  * @channel: the DSSS channel
1786  *
1787  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1788  * Ref IEEE 802.11-2007 section 15.6
1789  */
1790 static inline int ieee80211_dsss_chan_to_freq(int channel)
1791 {
1792         if ((channel > 0) && (channel < 14))
1793                 return 2407 + (channel * 5);
1794         else if (channel == 14)
1795                 return 2484;
1796         else
1797                 return -1;
1798 }
1799
1800 /**
1801  * ieee80211_freq_to_dsss_chan - get channel
1802  * @freq: the frequency
1803  *
1804  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1805  * Ref IEEE 802.11-2007 section 15.6
1806  *
1807  * This routine selects the channel with the closest center frequency.
1808  */
1809 static inline int ieee80211_freq_to_dsss_chan(int freq)
1810 {
1811         if ((freq >= 2410) && (freq < 2475))
1812                 return (freq - 2405) / 5;
1813         else if ((freq >= 2482) && (freq < 2487))
1814                 return 14;
1815         else
1816                 return -1;
1817 }
1818
1819 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1820  * Ref IEEE 802.11-2007 section 18.4.6.2
1821  *
1822  * The channels and frequencies are the same as those defined for DSSS
1823  */
1824 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1825 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1826
1827 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1828  * Ref IEEE 802.11-2007 section 19.4.2
1829  */
1830 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1831 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1832
1833 /**
1834  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1835  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1836  * @channel: the OFDM channel
1837  *
1838  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1839  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1840  */
1841 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1842 {
1843         if ((channel > 0) && (channel <= 200) &&
1844             (s_freq >= 4000))
1845                 return s_freq + (channel * 5);
1846         else
1847                 return -1;
1848 }
1849
1850 /**
1851  * ieee80211_freq_to_ofdm_channel - get channel
1852  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1853  * @freq: the frequency
1854  *
1855  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1856  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1857  *
1858  * This routine selects the channel with the closest center frequency.
1859  */
1860 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1861 {
1862         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1863             (s_freq >= 4000))
1864                 return (freq + 2 - s_freq) / 5;
1865         else
1866                 return -1;
1867 }
1868
1869 /**
1870  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1871  * @tu: the TUs
1872  */
1873 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1874 {
1875         return 1024 * tu;
1876 }
1877
1878 /**
1879  * ieee80211_check_tim - check if AID bit is set in TIM
1880  * @tim: the TIM IE
1881  * @tim_len: length of the TIM IE
1882  * @aid: the AID to look for
1883  */
1884 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1885                                        u8 tim_len, u16 aid)
1886 {
1887         u8 mask;
1888         u8 indexn0, indexn1, indexn2;
1889
1890         if (unlikely(!tim || tim_len < sizeof(*tim)))
1891                 return false;
1892
1893         aid &= 0x3fff;
1894         indexn0 = aid / 8;
1895         mask  = 1 << (aid & 7);
1896
1897         indexn1 = tim->bitmap_ctrl & 0xfe;
1898         indexn2 = tim_len + indexn1 - 4;
1899
1900         if (indexn0 < indexn1 || indexn0 > indexn2)
1901                 return false;
1902
1903         indexn0 -= indexn1;
1904
1905         return !!(tim->virtual_map[indexn0] & mask);
1906 }
1907
1908 #endif /* __LINUX_IEEE80211_H */