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