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 struct ieee80211s_hdr {
 561         u8 flags;
 562         u8 ttl;
 563         __le32 seqnum;
 564         u8 eaddr1[6];
 565         u8 eaddr2[6];
 566 } __attribute__ ((packed));
 567
 568 /* Mesh flags */
 569 #define MESH_FLAGS_AE_A4        0x1
 570 #define MESH_FLAGS_AE_A5_A6     0x2
 571 #define MESH_FLAGS_AE           0x3
 572 #define MESH_FLAGS_PS_DEEP      0x4
 573
 574 /**
 575  * struct ieee80211_quiet_ie
 576  *
 577  * This structure refers to "Quiet information element"
 578  */
 579 struct ieee80211_quiet_ie {
 580         u8 count;
 581         u8 period;
 582         __le16 duration;
 583         __le16 offset;
 584 } __attribute__ ((packed));
 585
 586 /**
 587  * struct ieee80211_msrment_ie
 588  *
 589  * This structure refers to "Measurement Request/Report information element"
 590  */
 591 struct ieee80211_msrment_ie {
 592         u8 token;
 593         u8 mode;
 594         u8 type;
 595         u8 request[0];
 596 } __attribute__ ((packed));
 597
 598 /**
 599  * struct ieee80211_channel_sw_ie
 600  *
 601  * This structure refers to "Channel Switch Announcement information element"
 602  */
 603 struct ieee80211_channel_sw_ie {
 604         u8 mode;
 605         u8 new_ch_num;
 606         u8 count;
 607 } __attribute__ ((packed));
 608
 609 /**
 610  * struct ieee80211_tim
 611  *
 612  * This structure refers to "Traffic Indication Map information element"
 613  */
 614 struct ieee80211_tim_ie {
 615         u8 dtim_count;
 616         u8 dtim_period;
 617         u8 bitmap_ctrl;
 618         /* variable size: 1 - 251 bytes */
 619         u8 virtual_map[1];
 620 } __attribute__ ((packed));
 621
 622 /**
 623  * struct ieee80211_meshconf_ie
 624  *
 625  * This structure refers to "Mesh Configuration information element"
 626  */
 627 struct ieee80211_meshconf_ie {
 628         u8 meshconf_psel;
 629         u8 meshconf_pmetric;
 630         u8 meshconf_congest;
 631         u8 meshconf_synch;
 632         u8 meshconf_auth;
 633         u8 meshconf_form;
 634         u8 meshconf_cap;
 635 } __attribute__ ((packed));
 636
 637 /**
 638  * struct ieee80211_rann_ie
 639  *
 640  * This structure refers to "Root Announcement information element"
 641  */
 642 struct ieee80211_rann_ie {
 643         u8 rann_flags;
 644         u8 rann_hopcount;
 645         u8 rann_ttl;
 646         u8 rann_addr[6];
 647         u32 rann_seq;
 648         u32 rann_interval;
 649         u32 rann_metric;
 650 } __attribute__ ((packed));
 651
 652 enum ieee80211_rann_flags {
 653         RANN_FLAG_IS_GATE = 1 << 0,
 654 };
 655
 656 #define WLAN_SA_QUERY_TR_ID_LEN 2
 657
 658 struct ieee80211_mgmt {
 659         __le16 frame_control;
 660         __le16 duration;
 661         u8 da[6];
 662         u8 sa[6];
 663         u8 bssid[6];
 664         __le16 seq_ctrl;
 665         union {
 666                 struct {
 667                         __le16 auth_alg;
 668                         __le16 auth_transaction;
 669                         __le16 status_code;
 670                         /* possibly followed by Challenge text */
 671                         u8 variable[0];
 672                 } __attribute__ ((packed)) auth;
 673                 struct {
 674                         __le16 reason_code;
 675                 } __attribute__ ((packed)) deauth;
 676                 struct {
 677                         __le16 capab_info;
 678                         __le16 listen_interval;
 679                         /* followed by SSID and Supported rates */
 680                         u8 variable[0];
 681                 } __attribute__ ((packed)) assoc_req;
 682                 struct {
 683                         __le16 capab_info;
 684                         __le16 status_code;
 685                         __le16 aid;
 686                         /* followed by Supported rates */
 687                         u8 variable[0];
 688                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 689                 struct {
 690                         __le16 capab_info;
 691                         __le16 listen_interval;
 692                         u8 current_ap[6];
 693                         /* followed by SSID and Supported rates */
 694                         u8 variable[0];
 695                 } __attribute__ ((packed)) reassoc_req;
 696                 struct {
 697                         __le16 reason_code;
 698                 } __attribute__ ((packed)) disassoc;
 699                 struct {
 700                         __le64 timestamp;
 701                         __le16 beacon_int;
 702                         __le16 capab_info;
 703                         /* followed by some of SSID, Supported rates,
 704                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 705                         u8 variable[0];
 706                 } __attribute__ ((packed)) beacon;
 707                 struct {
 708                         /* only variable items: SSID, Supported rates */
 709                         u8 variable[0];
 710                 } __attribute__ ((packed)) probe_req;
 711                 struct {
 712                         __le64 timestamp;
 713                         __le16 beacon_int;
 714                         __le16 capab_info;
 715                         /* followed by some of SSID, Supported rates,
 716                          * FH Params, DS Params, CF Params, IBSS Params */
 717                         u8 variable[0];
 718                 } __attribute__ ((packed)) probe_resp;
 719                 struct {
 720                         u8 category;
 721                         union {
 722                                 struct {
 723                                         u8 action_code;
 724                                         u8 dialog_token;
 725                                         u8 status_code;
 726                                         u8 variable[0];
 727                                 } __attribute__ ((packed)) wme_action;
 728                                 struct{
 729                                         u8 action_code;
 730                                         u8 element_id;
 731                                         u8 length;
 732                                         struct ieee80211_channel_sw_ie sw_elem;
 733                                 } __attribute__((packed)) chan_switch;
 734                                 struct{
 735                                         u8 action_code;
 736                                         u8 dialog_token;
 737                                         u8 element_id;
 738                                         u8 length;
 739                                         struct ieee80211_msrment_ie msr_elem;
 740                                 } __attribute__((packed)) measurement;
 741                                 struct{
 742                                         u8 action_code;
 743                                         u8 dialog_token;
 744                                         __le16 capab;
 745                                         __le16 timeout;
 746                                         __le16 start_seq_num;
 747                                 } __attribute__((packed)) addba_req;
 748                                 struct{
 749                                         u8 action_code;
 750                                         u8 dialog_token;
 751                                         __le16 status;
 752                                         __le16 capab;
 753                                         __le16 timeout;
 754                                 } __attribute__((packed)) addba_resp;
 755                                 struct{
 756                                         u8 action_code;
 757                                         __le16 params;
 758                                         __le16 reason_code;
 759                                 } __attribute__((packed)) delba;
 760                                 struct {
 761                                         u8 action_code;
 762                                         u8 variable[0];
 763                                 } __attribute__((packed)) self_prot;
 764                                 struct{
 765                                         u8 action_code;
 766                                         u8 variable[0];
 767                                 } __attribute__((packed)) mesh_action;
 768                                 struct {
 769                                         u8 action;
 770                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 771                                 } __attribute__ ((packed)) sa_query;
 772                                 struct {
 773                                         u8 action;
 774                                         u8 smps_control;
 775                                 } __attribute__ ((packed)) ht_smps;
 776                                 struct {
 777                                         u8 action_code;
 778                                         u8 dialog_token;
 779                                         __le16 capability;
 780                                         u8 variable[0];
 781                                 } __packed tdls_discover_resp;
 782                         } u;
 783                 } __attribute__ ((packed)) action;
 784         } u;
 785 } __attribute__ ((packed));
 786
 787 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 788 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 789
 790 /* mgmt header + 1 byte category code */
 791 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 792
 793
 794 /* Management MIC information element (IEEE 802.11w) */
 795 struct ieee80211_mmie {
 796         u8 element_id;
 797         u8 length;
 798         __le16 key_id;
 799         u8 sequence_number[6];
 800         u8 mic[8];
 801 } __attribute__ ((packed));
 802
 803 struct ieee80211_vendor_ie {
 804         u8 element_id;
 805         u8 len;
 806         u8 oui[3];
 807         u8 oui_type;
 808 } __packed;
 809
 810 /* Control frames */
 811 struct ieee80211_rts {
 812         __le16 frame_control;
 813         __le16 duration;
 814         u8 ra[6];
 815         u8 ta[6];
 816 } __attribute__ ((packed));
 817
 818 struct ieee80211_cts {
 819         __le16 frame_control;
 820         __le16 duration;
 821         u8 ra[6];
 822 } __attribute__ ((packed));
 823
 824 struct ieee80211_pspoll {
 825         __le16 frame_control;
 826         __le16 aid;
 827         u8 bssid[6];
 828         u8 ta[6];
 829 } __attribute__ ((packed));
 830
 831 /* TDLS */
 832
 833 /* Link-id information element */
 834 struct ieee80211_tdls_lnkie {
 835         u8 ie_type; /* Link Identifier IE */
 836         u8 ie_len;
 837         u8 bssid[6];
 838         u8 init_sta[6];
 839         u8 resp_sta[6];
 840 } __packed;
 841
 842 struct ieee80211_tdls_data {
 843         u8 da[6];
 844         u8 sa[6];
 845         __be16 ether_type;
 846         u8 payload_type;
 847         u8 category;
 848         u8 action_code;
 849         union {
 850                 struct {
 851                         u8 dialog_token;
 852                         __le16 capability;
 853                         u8 variable[0];
 854                 } __packed setup_req;
 855                 struct {
 856                         __le16 status_code;
 857                         u8 dialog_token;
 858                         __le16 capability;
 859                         u8 variable[0];
 860                 } __packed setup_resp;
 861                 struct {
 862                         __le16 status_code;
 863                         u8 dialog_token;
 864                         u8 variable[0];
 865                 } __packed setup_cfm;
 866                 struct {
 867                         __le16 reason_code;
 868                         u8 variable[0];
 869                 } __packed teardown;
 870                 struct {
 871                         u8 dialog_token;
 872                         u8 variable[0];
 873                 } __packed discover_req;
 874         } u;
 875 } __packed;
 876
 877 /**
 878  * struct ieee80211_bar - HT Block Ack Request
 879  *
 880  * This structure refers to "HT BlockAckReq" as
 881  * described in 802.11n draft section 7.2.1.7.1
 882  */
 883 struct ieee80211_bar {
 884         __le16 frame_control;
 885         __le16 duration;
 886         __u8 ra[6];
 887         __u8 ta[6];
 888         __le16 control;
 889         __le16 start_seq_num;
 890 } __attribute__((packed)) __aligned(4);
 891
 892 /* 802.11 BA(R) control masks */
 893 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 894 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 895 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 896 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 897 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 898
 899 /**
 900  * struct ieee80211_ba - HT Block Ack
 901  *
 902  * This structure refers to "HT BlockAck" as
 903  * described in 802.11n draft section 7.2.1.8.1
 904  */
 905 struct ieee80211_ba {
 906         __le16 frame_control;
 907         __le16 duration;
 908         u8 ra[6];
 909         u8 ta[6];
 910         __le16 control;
 911
 912         __le16 start_seq_num;
 913         u8 bitmap[8];
 914 } __attribute__((packed));
 915
 916 #define IEEE80211_HT_MCS_MASK_LEN               10
 917
 918 /**
 919  * struct ieee80211_mcs_info - MCS information
 920  * @rx_mask: RX mask
 921  * @rx_highest: highest supported RX rate. If set represents
 922  *      the highest supported RX data rate in units of 1 Mbps.
 923  *      If this field is 0 this value should not be used to
 924  *      consider the highest RX data rate supported.
 925  * @tx_params: TX parameters
 926  */
 927 struct ieee80211_mcs_info {
 928         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 929         __le16 rx_highest;
 930         u8 tx_params;
 931         u8 reserved[3];
 932 } __attribute__((packed));
 933
 934 /* 802.11n HT capability MSC set */
 935 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 936 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 937 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 938 /* value 0 == 1 stream etc */
 939 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 940 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 941 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 942 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 943
 944 /*
 945  * 802.11n D5.0 20.3.5 / 20.6 says:
 946  * - indices 0 to 7 and 32 are single spatial stream
 947  * - 8 to 31 are multiple spatial streams using equal modulation
 948  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 949  * - remainder are multiple spatial streams using unequal modulation
 950  */
 951 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 952 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 953         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 954
 955 /**
 956  * struct ieee80211_ht_cap - HT capabilities
 957  *
 958  * This structure is the "HT capabilities element" as
 959  * described in 802.11n D5.0 7.3.2.57
 960  */
 961 struct ieee80211_ht_cap {
 962         __le16 cap_info;
 963         u8 ampdu_params_info;
 964
 965         /* 16 bytes MCS information */
 966         struct ieee80211_mcs_info mcs;
 967
 968         __le16 extended_ht_cap_info;
 969         __le32 tx_BF_cap_info;
 970         u8 antenna_selection_info;
 971 } __attribute__ ((packed));
 972
 973 /* 802.11n HT capabilities masks (for cap_info) */
 974 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 975 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 976 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 977 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 978 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 979 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 980 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 981 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 982 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 983 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 984 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 985 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 986 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 987 #define IEEE80211_HT_CAP_RESERVED               0x2000
 988 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 989 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 990
 991 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 992 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 993 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 994 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 995 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 996 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 997 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 998 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 999
1000 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1001 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1002 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1003 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1004
1005 /*
1006  * Maximum length of AMPDU that the STA can receive.
1007  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1008  */
1009 enum ieee80211_max_ampdu_length_exp {
1010         IEEE80211_HT_MAX_AMPDU_8K = 0,
1011         IEEE80211_HT_MAX_AMPDU_16K = 1,
1012         IEEE80211_HT_MAX_AMPDU_32K = 2,
1013         IEEE80211_HT_MAX_AMPDU_64K = 3
1014 };
1015
1016 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1017
1018 /* Minimum MPDU start spacing */
1019 enum ieee80211_min_mpdu_spacing {
1020         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1021         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1022         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1023         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1024         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1025         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1026         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1027         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1028 };
1029
1030 /**
1031  * struct ieee80211_ht_info - HT information
1032  *
1033  * This structure is the "HT information element" as
1034  * described in 802.11n D5.0 7.3.2.58
1035  */
1036 struct ieee80211_ht_info {
1037         u8 control_chan;
1038         u8 ht_param;
1039         __le16 operation_mode;
1040         __le16 stbc_param;
1041         u8 basic_set[16];
1042 } __attribute__ ((packed));
1043
1044 /* for ht_param */
1045 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1046 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1047 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1048 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1049 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1050 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1051 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
1052 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
1053
1054 /* for operation_mode */
1055 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1056 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1057 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1058 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1059 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1060 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1061 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1062
1063 /* for stbc_param */
1064 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1065 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1066 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1067 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1068 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1069 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1070
1071
1072 /* block-ack parameters */
1073 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1074 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1075 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1076 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1077 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1078
1079 /*
1080  * A-PMDU buffer sizes
1081  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1082  */
1083 #define IEEE80211_MIN_AMPDU_BUF 0x8
1084 #define IEEE80211_MAX_AMPDU_BUF 0x40
1085
1086
1087 /* Spatial Multiplexing Power Save Modes (for capability) */
1088 #define WLAN_HT_CAP_SM_PS_STATIC        0
1089 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1090 #define WLAN_HT_CAP_SM_PS_INVALID       2
1091 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1092
1093 /* for SM power control field lower two bits */
1094 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1095 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1096 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1097
1098 /* Authentication algorithms */
1099 #define WLAN_AUTH_OPEN 0
1100 #define WLAN_AUTH_SHARED_KEY 1
1101 #define WLAN_AUTH_FT 2
1102 #define WLAN_AUTH_SAE 3
1103 #define WLAN_AUTH_LEAP 128
1104
1105 #define WLAN_AUTH_CHALLENGE_LEN 128
1106
1107 #define WLAN_CAPABILITY_ESS             (1<<0)
1108 #define WLAN_CAPABILITY_IBSS            (1<<1)
1109
1110 /*
1111  * A mesh STA sets the ESS and IBSS capability bits to zero.
1112  * however, this holds true for p2p probe responses (in the p2p_find
1113  * phase) as well.
1114  */
1115 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1116         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1117
1118 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1119 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1120 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1121 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1122 #define WLAN_CAPABILITY_PBCC            (1<<6)
1123 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1124
1125 /* 802.11h */
1126 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1127 #define WLAN_CAPABILITY_QOS             (1<<9)
1128 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1129 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1130 /* measurement */
1131 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1132 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1133 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1134
1135 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1136 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1137 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1138
1139
1140 /* 802.11g ERP information element */
1141 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1142 #define WLAN_ERP_USE_PROTECTION (1<<1)
1143 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1144
1145 /* WLAN_ERP_BARKER_PREAMBLE values */
1146 enum {
1147         WLAN_ERP_PREAMBLE_SHORT = 0,
1148         WLAN_ERP_PREAMBLE_LONG = 1,
1149 };
1150
1151 /* Status codes */
1152 enum ieee80211_statuscode {
1153         WLAN_STATUS_SUCCESS = 0,
1154         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1155         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1156         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1157         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1158         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1159         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1160         WLAN_STATUS_CHALLENGE_FAIL = 15,
1161         WLAN_STATUS_AUTH_TIMEOUT = 16,
1162         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1163         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1164         /* 802.11b */
1165         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1166         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1167         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1168         /* 802.11h */
1169         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1170         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1171         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1172         /* 802.11g */
1173         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1174         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1175         /* 802.11w */
1176         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1177         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1178         /* 802.11i */
1179         WLAN_STATUS_INVALID_IE = 40,
1180         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1181         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1182         WLAN_STATUS_INVALID_AKMP = 43,
1183         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1184         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1185         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1186         /* 802.11e */
1187         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1188         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1189         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1190         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1191         WLAN_STATUS_REQUEST_DECLINED = 37,
1192         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1193         WLAN_STATUS_CHANGE_TSPEC = 39,
1194         WLAN_STATUS_WAIT_TS_DELAY = 47,
1195         WLAN_STATUS_NO_DIRECT_LINK = 48,
1196         WLAN_STATUS_STA_NOT_PRESENT = 49,
1197         WLAN_STATUS_STA_NOT_QSTA = 50,
1198         /* 802.11s */
1199         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1200         WLAN_STATUS_FCG_NOT_SUPP = 78,
1201         WLAN_STATUS_STA_NO_TBTT = 78,
1202 };
1203
1204
1205 /* Reason codes */
1206 enum ieee80211_reasoncode {
1207         WLAN_REASON_UNSPECIFIED = 1,
1208         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1209         WLAN_REASON_DEAUTH_LEAVING = 3,
1210         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1211         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1212         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1213         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1214         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1215         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1216         /* 802.11h */
1217         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1218         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1219         /* 802.11i */
1220         WLAN_REASON_INVALID_IE = 13,
1221         WLAN_REASON_MIC_FAILURE = 14,
1222         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1223         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1224         WLAN_REASON_IE_DIFFERENT = 17,
1225         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1226         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1227         WLAN_REASON_INVALID_AKMP = 20,
1228         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1229         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1230         WLAN_REASON_IEEE8021X_FAILED = 23,
1231         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1232         /* 802.11e */
1233         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1234         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1235         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1236         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1237         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1238         WLAN_REASON_QSTA_NOT_USE = 37,
1239         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1240         WLAN_REASON_QSTA_TIMEOUT = 39,
1241         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1242         /* 802.11s */
1243         WLAN_REASON_MESH_PEER_CANCELED = 52,
1244         WLAN_REASON_MESH_MAX_PEERS = 53,
1245         WLAN_REASON_MESH_CONFIG = 54,
1246         WLAN_REASON_MESH_CLOSE = 55,
1247         WLAN_REASON_MESH_MAX_RETRIES = 56,
1248         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1249         WLAN_REASON_MESH_INVALID_GTK = 58,
1250         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1251         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1252         WLAN_REASON_MESH_PATH_ERROR = 61,
1253         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1254         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1255         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1256         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1257         WLAN_REASON_MESH_CHAN = 66,
1258 };
1259
1260
1261 /* Information Element IDs */
1262 enum ieee80211_eid {
1263         WLAN_EID_SSID = 0,
1264         WLAN_EID_SUPP_RATES = 1,
1265         WLAN_EID_FH_PARAMS = 2,
1266         WLAN_EID_DS_PARAMS = 3,
1267         WLAN_EID_CF_PARAMS = 4,
1268         WLAN_EID_TIM = 5,
1269         WLAN_EID_IBSS_PARAMS = 6,
1270         WLAN_EID_CHALLENGE = 16,
1271
1272         WLAN_EID_COUNTRY = 7,
1273         WLAN_EID_HP_PARAMS = 8,
1274         WLAN_EID_HP_TABLE = 9,
1275         WLAN_EID_REQUEST = 10,
1276
1277         WLAN_EID_QBSS_LOAD = 11,
1278         WLAN_EID_EDCA_PARAM_SET = 12,
1279         WLAN_EID_TSPEC = 13,
1280         WLAN_EID_TCLAS = 14,
1281         WLAN_EID_SCHEDULE = 15,
1282         WLAN_EID_TS_DELAY = 43,
1283         WLAN_EID_TCLAS_PROCESSING = 44,
1284         WLAN_EID_QOS_CAPA = 46,
1285         /* 802.11z */
1286         WLAN_EID_LINK_ID = 101,
1287         /* 802.11s */
1288         WLAN_EID_MESH_CONFIG = 113,
1289         WLAN_EID_MESH_ID = 114,
1290         WLAN_EID_LINK_METRIC_REPORT = 115,
1291         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1292         WLAN_EID_PEER_MGMT = 117,
1293         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1294         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1295         WLAN_EID_BEACON_TIMING = 120,
1296         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1297         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1298         WLAN_EID_MCCAOP_ADVERT = 123,
1299         WLAN_EID_MCCAOP_TEARDOWN = 124,
1300         WLAN_EID_GANN = 125,
1301         WLAN_EID_RANN = 126,
1302         WLAN_EID_PREQ = 130,
1303         WLAN_EID_PREP = 131,
1304         WLAN_EID_PERR = 132,
1305         WLAN_EID_PXU = 137,
1306         WLAN_EID_PXUC = 138,
1307         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1308         WLAN_EID_MIC = 140,
1309
1310         WLAN_EID_PWR_CONSTRAINT = 32,
1311         WLAN_EID_PWR_CAPABILITY = 33,
1312         WLAN_EID_TPC_REQUEST = 34,
1313         WLAN_EID_TPC_REPORT = 35,
1314         WLAN_EID_SUPPORTED_CHANNELS = 36,
1315         WLAN_EID_CHANNEL_SWITCH = 37,
1316         WLAN_EID_MEASURE_REQUEST = 38,
1317         WLAN_EID_MEASURE_REPORT = 39,
1318         WLAN_EID_QUIET = 40,
1319         WLAN_EID_IBSS_DFS = 41,
1320
1321         WLAN_EID_ERP_INFO = 42,
1322         WLAN_EID_EXT_SUPP_RATES = 50,
1323
1324         WLAN_EID_HT_CAPABILITY = 45,
1325         WLAN_EID_HT_INFORMATION = 61,
1326
1327         WLAN_EID_RSN = 48,
1328         WLAN_EID_MMIE = 76,
1329         WLAN_EID_WPA = 221,
1330         WLAN_EID_GENERIC = 221,
1331         WLAN_EID_VENDOR_SPECIFIC = 221,
1332         WLAN_EID_QOS_PARAMETER = 222,
1333
1334         WLAN_EID_AP_CHAN_REPORT = 51,
1335         WLAN_EID_NEIGHBOR_REPORT = 52,
1336         WLAN_EID_RCPI = 53,
1337         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1338         WLAN_EID_ANTENNA_INFO = 64,
1339         WLAN_EID_RSNI = 65,
1340         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1341         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1342         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1343         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1344         WLAN_EID_MULTIPLE_BSSID = 71,
1345         WLAN_EID_BSS_COEX_2040 = 72,
1346         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1347         WLAN_EID_EXT_CAPABILITY = 127,
1348
1349         WLAN_EID_MOBILITY_DOMAIN = 54,
1350         WLAN_EID_FAST_BSS_TRANSITION = 55,
1351         WLAN_EID_TIMEOUT_INTERVAL = 56,
1352         WLAN_EID_RIC_DATA = 57,
1353         WLAN_EID_RIC_DESCRIPTOR = 75,
1354
1355         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1356         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1357         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1358 };
1359
1360 /* Action category code */
1361 enum ieee80211_category {
1362         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1363         WLAN_CATEGORY_QOS = 1,
1364         WLAN_CATEGORY_DLS = 2,
1365         WLAN_CATEGORY_BACK = 3,
1366         WLAN_CATEGORY_PUBLIC = 4,
1367         WLAN_CATEGORY_HT = 7,
1368         WLAN_CATEGORY_SA_QUERY = 8,
1369         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1370         WLAN_CATEGORY_TDLS = 12,
1371         WLAN_CATEGORY_MESH_ACTION = 13,
1372         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1373         WLAN_CATEGORY_SELF_PROTECTED = 15,
1374         WLAN_CATEGORY_WMM = 17,
1375         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1376         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1377 };
1378
1379 /* SPECTRUM_MGMT action code */
1380 enum ieee80211_spectrum_mgmt_actioncode {
1381         WLAN_ACTION_SPCT_MSR_REQ = 0,
1382         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1383         WLAN_ACTION_SPCT_TPC_REQ = 2,
1384         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1385         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1386 };
1387
1388 /* HT action codes */
1389 enum ieee80211_ht_actioncode {
1390         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1391         WLAN_HT_ACTION_SMPS = 1,
1392         WLAN_HT_ACTION_PSMP = 2,
1393         WLAN_HT_ACTION_PCO_PHASE = 3,
1394         WLAN_HT_ACTION_CSI = 4,
1395         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1396         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1397         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1398 };
1399
1400 /* Self Protected Action codes */
1401 enum ieee80211_self_protected_actioncode {
1402         WLAN_SP_RESERVED = 0,
1403         WLAN_SP_MESH_PEERING_OPEN = 1,
1404         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1405         WLAN_SP_MESH_PEERING_CLOSE = 3,
1406         WLAN_SP_MGK_INFORM = 4,
1407         WLAN_SP_MGK_ACK = 5,
1408 };
1409
1410 /* Mesh action codes */
1411 enum ieee80211_mesh_actioncode {
1412         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1413         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1414         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1415         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1416         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1417         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1418         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1419         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1420         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1421         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1422         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1423 };
1424
1425 /* Security key length */
1426 enum ieee80211_key_len {
1427         WLAN_KEY_LEN_WEP40 = 5,
1428         WLAN_KEY_LEN_WEP104 = 13,
1429         WLAN_KEY_LEN_CCMP = 16,
1430         WLAN_KEY_LEN_TKIP = 32,
1431         WLAN_KEY_LEN_AES_CMAC = 16,
1432 };
1433
1434 /* Public action codes */
1435 enum ieee80211_pub_actioncode {
1436         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1437 };
1438
1439 /* TDLS action codes */
1440 enum ieee80211_tdls_actioncode {
1441         WLAN_TDLS_SETUP_REQUEST = 0,
1442         WLAN_TDLS_SETUP_RESPONSE = 1,
1443         WLAN_TDLS_SETUP_CONFIRM = 2,
1444         WLAN_TDLS_TEARDOWN = 3,
1445         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1446         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1447         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1448         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1449         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1450         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1451         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1452 };
1453
1454 /*
1455  * TDLS capabililites to be enabled in the 5th byte of the
1456  * @WLAN_EID_EXT_CAPABILITY information element
1457  */
1458 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1459 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1460
1461 /* TDLS specific payload type in the LLC/SNAP header */
1462 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1463
1464 /**
1465  * enum - mesh path selection protocol identifier
1466  *
1467  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1468  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1469  * be specified in a vendor specific information element
1470  */
1471 enum {
1472         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1473         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1474 };
1475
1476 /**
1477  * enum - mesh path selection metric identifier
1478  *
1479  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1480  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1481  * specified in a vendor specific information element
1482  */
1483 enum {
1484         IEEE80211_PATH_METRIC_AIRTIME = 0,
1485         IEEE80211_PATH_METRIC_VENDOR = 255,
1486 };
1487
1488
1489 /*
1490  * IEEE 802.11-2007 7.3.2.9 Country information element
1491  *
1492  * Minimum length is 8 octets, ie len must be evenly
1493  * divisible by 2
1494  */
1495
1496 /* Although the spec says 8 I'm seeing 6 in practice */
1497 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1498
1499 /* The Country String field of the element shall be 3 octets in length */
1500 #define IEEE80211_COUNTRY_STRING_LEN    3
1501
1502 /*
1503  * For regulatory extension stuff see IEEE 802.11-2007
1504  * Annex I (page 1141) and Annex J (page 1147). Also
1505  * review 7.3.2.9.
1506  *
1507  * When dot11RegulatoryClassesRequired is true and the
1508  * first_channel/reg_extension_id is >= 201 then the IE
1509  * compromises of the 'ext' struct represented below:
1510  *
1511  *  - Regulatory extension ID - when generating IE this just needs
1512  *    to be monotonically increasing for each triplet passed in
1513  *    the IE
1514  *  - Regulatory class - index into set of rules
1515  *  - Coverage class - index into air propagation time (Table 7-27),
1516  *    in microseconds, you can compute the air propagation time from
1517  *    the index by multiplying by 3, so index 10 yields a propagation
1518  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1519  *    yet. A value of 0 inicates air propagation of <= 1 us.
1520  *
1521  *  See also Table I.2 for Emission limit sets and table
1522  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1523  *  a reg_class to an emission limit set and behavior limit set.
1524  */
1525 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1526
1527 /*
1528  *  Channels numbers in the IE must be monotonically increasing
1529  *  if dot11RegulatoryClassesRequired is not true.
1530  *
1531  *  If dot11RegulatoryClassesRequired is true consecutive
1532  *  subband triplets following a regulatory triplet shall
1533  *  have monotonically increasing first_channel number fields.
1534  *
1535  *  Channel numbers shall not overlap.
1536  *
1537  *  Note that max_power is signed.
1538  */
1539 struct ieee80211_country_ie_triplet {
1540         union {
1541                 struct {
1542                         u8 first_channel;
1543                         u8 num_channels;
1544                         s8 max_power;
1545                 } __attribute__ ((packed)) chans;
1546                 struct {
1547                         u8 reg_extension_id;
1548                         u8 reg_class;
1549                         u8 coverage_class;
1550                 } __attribute__ ((packed)) ext;
1551         };
1552 } __attribute__ ((packed));
1553
1554 enum ieee80211_timeout_interval_type {
1555         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1556         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1557         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1558 };
1559
1560 /* BACK action code */
1561 enum ieee80211_back_actioncode {
1562         WLAN_ACTION_ADDBA_REQ = 0,
1563         WLAN_ACTION_ADDBA_RESP = 1,
1564         WLAN_ACTION_DELBA = 2,
1565 };
1566
1567 /* BACK (block-ack) parties */
1568 enum ieee80211_back_parties {
1569         WLAN_BACK_RECIPIENT = 0,
1570         WLAN_BACK_INITIATOR = 1,
1571 };
1572
1573 /* SA Query action */
1574 enum ieee80211_sa_query_action {
1575         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1576         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1577 };
1578
1579
1580 /* cipher suite selectors */
1581 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1582 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1583 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1584 /* reserved:                            0x000FAC03 */
1585 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1586 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1587 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1588
1589 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1590
1591 /* AKM suite selectors */
1592 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1593 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1594 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1595 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1596
1597 #define WLAN_MAX_KEY_LEN                32
1598
1599 #define WLAN_PMKID_LEN                  16
1600
1601 #define WLAN_OUI_WFA                    0x506f9a
1602 #define WLAN_OUI_TYPE_WFA_P2P           9
1603
1604 /*
1605  * WMM/802.11e Tspec Element
1606  */
1607 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1608 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1609
1610 enum ieee80211_tspec_status_code {
1611         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1612         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1613 };
1614
1615 struct ieee80211_tspec_ie {
1616         u8 element_id;
1617         u8 len;
1618         u8 oui[3];
1619         u8 oui_type;
1620         u8 oui_subtype;
1621         u8 version;
1622         __le16 tsinfo;
1623         u8 tsinfo_resvd;
1624         __le16 nominal_msdu;
1625         __le16 max_msdu;
1626         __le32 min_service_int;
1627         __le32 max_service_int;
1628         __le32 inactivity_int;
1629         __le32 suspension_int;
1630         __le32 service_start_time;
1631         __le32 min_data_rate;
1632         __le32 mean_data_rate;
1633         __le32 peak_data_rate;
1634         __le32 max_burst_size;
1635         __le32 delay_bound;
1636         __le32 min_phy_rate;
1637         __le16 sba;
1638         __le16 medium_time;
1639 } __packed;
1640
1641 /**
1642  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1643  * @hdr: the frame
1644  *
1645  * The qos ctrl bytes come after the frame_control, duration, seq_num
1646  * and 3 or 4 addresses of length ETH_ALEN.
1647  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1648  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1649  */
1650 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1651 {
1652         if (ieee80211_has_a4(hdr->frame_control))
1653                 return (u8 *)hdr + 30;
1654         else
1655                 return (u8 *)hdr + 24;
1656 }
1657
1658 /**
1659  * ieee80211_get_SA - get pointer to SA
1660  * @hdr: the frame
1661  *
1662  * Given an 802.11 frame, this function returns the offset
1663  * to the source address (SA). It does not verify that the
1664  * header is long enough to contain the address, and the
1665  * header must be long enough to contain the frame control
1666  * field.
1667  */
1668 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1669 {
1670         if (ieee80211_has_a4(hdr->frame_control))
1671                 return hdr->addr4;
1672         if (ieee80211_has_fromds(hdr->frame_control))
1673                 return hdr->addr3;
1674         return hdr->addr2;
1675 }
1676
1677 /**
1678  * ieee80211_get_DA - get pointer to DA
1679  * @hdr: the frame
1680  *
1681  * Given an 802.11 frame, this function returns the offset
1682  * to the destination address (DA). It does not verify that
1683  * the header is long enough to contain the address, and the
1684  * header must be long enough to contain the frame control
1685  * field.
1686  */
1687 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1688 {
1689         if (ieee80211_has_tods(hdr->frame_control))
1690                 return hdr->addr3;
1691         else
1692                 return hdr->addr1;
1693 }
1694
1695 /**
1696  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1697  * @hdr: the frame (buffer must include at least the first octet of payload)
1698  */
1699 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1700 {
1701         if (ieee80211_is_disassoc(hdr->frame_control) ||
1702             ieee80211_is_deauth(hdr->frame_control))
1703                 return true;
1704
1705         if (ieee80211_is_action(hdr->frame_control)) {
1706                 u8 *category;
1707
1708                 /*
1709                  * Action frames, excluding Public Action frames, are Robust
1710                  * Management Frames. However, if we are looking at a Protected
1711                  * frame, skip the check since the data may be encrypted and
1712                  * the frame has already been found to be a Robust Management
1713                  * Frame (by the other end).
1714                  */
1715                 if (ieee80211_has_protected(hdr->frame_control))
1716                         return true;
1717                 category = ((u8 *) hdr) + 24;
1718                 return *category != WLAN_CATEGORY_PUBLIC &&
1719                         *category != WLAN_CATEGORY_HT &&
1720                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1721                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1722         }
1723
1724         return false;
1725 }
1726
1727 /**
1728  * ieee80211_is_public_action - check if frame is a public action frame
1729  * @hdr: the frame
1730  * @len: length of the frame
1731  */
1732 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1733                                               size_t len)
1734 {
1735         struct ieee80211_mgmt *mgmt = (void *)hdr;
1736
1737         if (len < IEEE80211_MIN_ACTION_SIZE)
1738                 return false;
1739         if (!ieee80211_is_action(hdr->frame_control))
1740                 return false;
1741         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1742 }
1743
1744 /**
1745  * ieee80211_fhss_chan_to_freq - get channel frequency
1746  * @channel: the FHSS channel
1747  *
1748  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1749  * Ref IEEE 802.11-2007 section 14.6
1750  */
1751 static inline int ieee80211_fhss_chan_to_freq(int channel)
1752 {
1753         if ((channel > 1) && (channel < 96))
1754                 return channel + 2400;
1755         else
1756                 return -1;
1757 }
1758
1759 /**
1760  * ieee80211_freq_to_fhss_chan - get channel
1761  * @freq: the channels frequency
1762  *
1763  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1764  * Ref IEEE 802.11-2007 section 14.6
1765  */
1766 static inline int ieee80211_freq_to_fhss_chan(int freq)
1767 {
1768         if ((freq > 2401) && (freq < 2496))
1769                 return freq - 2400;
1770         else
1771                 return -1;
1772 }
1773
1774 /**
1775  * ieee80211_dsss_chan_to_freq - get channel center frequency
1776  * @channel: the DSSS channel
1777  *
1778  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1779  * Ref IEEE 802.11-2007 section 15.6
1780  */
1781 static inline int ieee80211_dsss_chan_to_freq(int channel)
1782 {
1783         if ((channel > 0) && (channel < 14))
1784                 return 2407 + (channel * 5);
1785         else if (channel == 14)
1786                 return 2484;
1787         else
1788                 return -1;
1789 }
1790
1791 /**
1792  * ieee80211_freq_to_dsss_chan - get channel
1793  * @freq: the frequency
1794  *
1795  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1796  * Ref IEEE 802.11-2007 section 15.6
1797  *
1798  * This routine selects the channel with the closest center frequency.
1799  */
1800 static inline int ieee80211_freq_to_dsss_chan(int freq)
1801 {
1802         if ((freq >= 2410) && (freq < 2475))
1803                 return (freq - 2405) / 5;
1804         else if ((freq >= 2482) && (freq < 2487))
1805                 return 14;
1806         else
1807                 return -1;
1808 }
1809
1810 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1811  * Ref IEEE 802.11-2007 section 18.4.6.2
1812  *
1813  * The channels and frequencies are the same as those defined for DSSS
1814  */
1815 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1816 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1817
1818 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1819  * Ref IEEE 802.11-2007 section 19.4.2
1820  */
1821 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1822 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1823
1824 /**
1825  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1826  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1827  * @channel: the OFDM channel
1828  *
1829  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1830  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1831  */
1832 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1833 {
1834         if ((channel > 0) && (channel <= 200) &&
1835             (s_freq >= 4000))
1836                 return s_freq + (channel * 5);
1837         else
1838                 return -1;
1839 }
1840
1841 /**
1842  * ieee80211_freq_to_ofdm_channel - get channel
1843  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1844  * @freq: the frequency
1845  *
1846  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1847  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1848  *
1849  * This routine selects the channel with the closest center frequency.
1850  */
1851 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1852 {
1853         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1854             (s_freq >= 4000))
1855                 return (freq + 2 - s_freq) / 5;
1856         else
1857                 return -1;
1858 }
1859
1860 /**
1861  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1862  * @tu: the TUs
1863  */
1864 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1865 {
1866         return 1024 * tu;
1867 }
1868
1869 /**
1870  * ieee80211_check_tim - check if AID bit is set in TIM
1871  * @tim: the TIM IE
1872  * @tim_len: length of the TIM IE
1873  * @aid: the AID to look for
1874  */
1875 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1876                                        u8 tim_len, u16 aid)
1877 {
1878         u8 mask;
1879         u8 indexn0, indexn1, indexn2;
1880
1881         if (unlikely(!tim || tim_len < sizeof(*tim)))
1882                 return false;
1883
1884         aid &= 0x3fff;
1885         indexn0 = aid / 8;
1886         mask  = 1 << (aid & 7);
1887
1888         indexn1 = tim->bitmap_ctrl & 0xfe;
1889         indexn2 = tim_len + indexn1 - 4;
1890
1891         if (indexn0 < indexn1 || indexn0 > indexn2)
1892                 return false;
1893
1894         indexn0 -= indexn1;
1895
1896         return !!(tim->virtual_map[indexn0] & mask);
1897 }
1898
1899 #endif /* __LINUX_IEEE80211_H */