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 /* Control frames */
 794 struct ieee80211_rts {
 795         __le16 frame_control;
 796         __le16 duration;
 797         u8 ra[6];
 798         u8 ta[6];
 799 } __attribute__ ((packed));
 800
 801 struct ieee80211_cts {
 802         __le16 frame_control;
 803         __le16 duration;
 804         u8 ra[6];
 805 } __attribute__ ((packed));
 806
 807 struct ieee80211_pspoll {
 808         __le16 frame_control;
 809         __le16 aid;
 810         u8 bssid[6];
 811         u8 ta[6];
 812 } __attribute__ ((packed));
 813
 814 /**
 815  * struct ieee80211_bar - HT Block Ack Request
 816  *
 817  * This structure refers to "HT BlockAckReq" as
 818  * described in 802.11n draft section 7.2.1.7.1
 819  */
 820 struct ieee80211_bar {
 821         __le16 frame_control;
 822         __le16 duration;
 823         __u8 ra[6];
 824         __u8 ta[6];
 825         __le16 control;
 826         __le16 start_seq_num;
 827 } __attribute__((packed)) __aligned(4);
 828
 829 /* 802.11 BA(R) control masks */
 830 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 831 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 832 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 833 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 834 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 835
 836 /**
 837  * struct ieee80211_ba - HT Block Ack
 838  *
 839  * This structure refers to "HT BlockAck" as
 840  * described in 802.11n draft section 7.2.1.8.1
 841  */
 842 struct ieee80211_ba {
 843         __le16 frame_control;
 844         __le16 duration;
 845         u8 ra[6];
 846         u8 ta[6];
 847         __le16 control;
 848
 849         __le16 start_seq_num;
 850         u8 bitmap[8];
 851 } __attribute__((packed));
 852
 853 #define IEEE80211_HT_MCS_MASK_LEN               10
 854
 855 /**
 856  * struct ieee80211_mcs_info - MCS information
 857  * @rx_mask: RX mask
 858  * @rx_highest: highest supported RX rate. If set represents
 859  *      the highest supported RX data rate in units of 1 Mbps.
 860  *      If this field is 0 this value should not be used to
 861  *      consider the highest RX data rate supported.
 862  * @tx_params: TX parameters
 863  */
 864 struct ieee80211_mcs_info {
 865         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 866         __le16 rx_highest;
 867         u8 tx_params;
 868         u8 reserved[3];
 869 } __attribute__((packed));
 870
 871 /* 802.11n HT capability MSC set */
 872 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 873 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 874 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 875 /* value 0 == 1 stream etc */
 876 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 877 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 878 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 879 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 880
 881 /*
 882  * 802.11n D5.0 20.3.5 / 20.6 says:
 883  * - indices 0 to 7 and 32 are single spatial stream
 884  * - 8 to 31 are multiple spatial streams using equal modulation
 885  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 886  * - remainder are multiple spatial streams using unequal modulation
 887  */
 888 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 889 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 890         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 891
 892 /**
 893  * struct ieee80211_ht_cap - HT capabilities
 894  *
 895  * This structure is the "HT capabilities element" as
 896  * described in 802.11n D5.0 7.3.2.57
 897  */
 898 struct ieee80211_ht_cap {
 899         __le16 cap_info;
 900         u8 ampdu_params_info;
 901
 902         /* 16 bytes MCS information */
 903         struct ieee80211_mcs_info mcs;
 904
 905         __le16 extended_ht_cap_info;
 906         __le32 tx_BF_cap_info;
 907         u8 antenna_selection_info;
 908 } __attribute__ ((packed));
 909
 910 /* 802.11n HT capabilities masks (for cap_info) */
 911 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 912 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 913 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 914 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 915 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 916 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 917 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 918 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 919 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 920 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 921 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 922 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 923 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 924 #define IEEE80211_HT_CAP_RESERVED               0x2000
 925 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 926 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 927
 928 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 929 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 930 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 931 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 932 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 933 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 934 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 935 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 936
 937 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 938 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 939 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 940 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 941
 942 /*
 943  * Maximum length of AMPDU that the STA can receive.
 944  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 945  */
 946 enum ieee80211_max_ampdu_length_exp {
 947         IEEE80211_HT_MAX_AMPDU_8K = 0,
 948         IEEE80211_HT_MAX_AMPDU_16K = 1,
 949         IEEE80211_HT_MAX_AMPDU_32K = 2,
 950         IEEE80211_HT_MAX_AMPDU_64K = 3
 951 };
 952
 953 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 954
 955 /* Minimum MPDU start spacing */
 956 enum ieee80211_min_mpdu_spacing {
 957         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
 958         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
 959         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
 960         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
 961         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
 962         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
 963         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
 964         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
 965 };
 966
 967 /**
 968  * struct ieee80211_ht_info - HT information
 969  *
 970  * This structure is the "HT information element" as
 971  * described in 802.11n D5.0 7.3.2.58
 972  */
 973 struct ieee80211_ht_info {
 974         u8 control_chan;
 975         u8 ht_param;
 976         __le16 operation_mode;
 977         __le16 stbc_param;
 978         u8 basic_set[16];
 979 } __attribute__ ((packed));
 980
 981 /* for ht_param */
 982 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
 983 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
 984 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
 985 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
 986 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
 987 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
 988 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
 989 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
 990
 991 /* for operation_mode */
 992 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
 993 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
 994 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
 995 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
 996 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
 997 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
 998 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
 999
1000 /* for stbc_param */
1001 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1002 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1003 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1004 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1005 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1006 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1007
1008
1009 /* block-ack parameters */
1010 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1011 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1012 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1013 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1014 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1015
1016 /*
1017  * A-PMDU buffer sizes
1018  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1019  */
1020 #define IEEE80211_MIN_AMPDU_BUF 0x8
1021 #define IEEE80211_MAX_AMPDU_BUF 0x40
1022
1023
1024 /* Spatial Multiplexing Power Save Modes (for capability) */
1025 #define WLAN_HT_CAP_SM_PS_STATIC        0
1026 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1027 #define WLAN_HT_CAP_SM_PS_INVALID       2
1028 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1029
1030 /* for SM power control field lower two bits */
1031 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1032 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1033 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1034
1035 /* Authentication algorithms */
1036 #define WLAN_AUTH_OPEN 0
1037 #define WLAN_AUTH_SHARED_KEY 1
1038 #define WLAN_AUTH_FT 2
1039 #define WLAN_AUTH_SAE 3
1040 #define WLAN_AUTH_LEAP 128
1041
1042 #define WLAN_AUTH_CHALLENGE_LEN 128
1043
1044 #define WLAN_CAPABILITY_ESS             (1<<0)
1045 #define WLAN_CAPABILITY_IBSS            (1<<1)
1046
1047 /*
1048  * A mesh STA sets the ESS and IBSS capability bits to zero.
1049  * however, this holds true for p2p probe responses (in the p2p_find
1050  * phase) as well.
1051  */
1052 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1053         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1054
1055 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1056 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1057 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1058 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1059 #define WLAN_CAPABILITY_PBCC            (1<<6)
1060 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1061
1062 /* 802.11h */
1063 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1064 #define WLAN_CAPABILITY_QOS             (1<<9)
1065 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1066 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1067 /* measurement */
1068 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1069 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1070 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1071
1072 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1073 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1074 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1075
1076
1077 /* 802.11g ERP information element */
1078 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1079 #define WLAN_ERP_USE_PROTECTION (1<<1)
1080 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1081
1082 /* WLAN_ERP_BARKER_PREAMBLE values */
1083 enum {
1084         WLAN_ERP_PREAMBLE_SHORT = 0,
1085         WLAN_ERP_PREAMBLE_LONG = 1,
1086 };
1087
1088 /* Status codes */
1089 enum ieee80211_statuscode {
1090         WLAN_STATUS_SUCCESS = 0,
1091         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1092         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1093         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1094         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1095         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1096         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1097         WLAN_STATUS_CHALLENGE_FAIL = 15,
1098         WLAN_STATUS_AUTH_TIMEOUT = 16,
1099         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1100         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1101         /* 802.11b */
1102         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1103         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1104         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1105         /* 802.11h */
1106         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1107         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1108         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1109         /* 802.11g */
1110         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1111         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1112         /* 802.11w */
1113         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1114         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1115         /* 802.11i */
1116         WLAN_STATUS_INVALID_IE = 40,
1117         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1118         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1119         WLAN_STATUS_INVALID_AKMP = 43,
1120         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1121         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1122         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1123         /* 802.11e */
1124         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1125         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1126         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1127         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1128         WLAN_STATUS_REQUEST_DECLINED = 37,
1129         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1130         WLAN_STATUS_CHANGE_TSPEC = 39,
1131         WLAN_STATUS_WAIT_TS_DELAY = 47,
1132         WLAN_STATUS_NO_DIRECT_LINK = 48,
1133         WLAN_STATUS_STA_NOT_PRESENT = 49,
1134         WLAN_STATUS_STA_NOT_QSTA = 50,
1135         /* 802.11s */
1136         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1137         WLAN_STATUS_FCG_NOT_SUPP = 78,
1138         WLAN_STATUS_STA_NO_TBTT = 78,
1139 };
1140
1141
1142 /* Reason codes */
1143 enum ieee80211_reasoncode {
1144         WLAN_REASON_UNSPECIFIED = 1,
1145         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1146         WLAN_REASON_DEAUTH_LEAVING = 3,
1147         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1148         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1149         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1150         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1151         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1152         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1153         /* 802.11h */
1154         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1155         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1156         /* 802.11i */
1157         WLAN_REASON_INVALID_IE = 13,
1158         WLAN_REASON_MIC_FAILURE = 14,
1159         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1160         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1161         WLAN_REASON_IE_DIFFERENT = 17,
1162         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1163         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1164         WLAN_REASON_INVALID_AKMP = 20,
1165         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1166         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1167         WLAN_REASON_IEEE8021X_FAILED = 23,
1168         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1169         /* 802.11e */
1170         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1171         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1172         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1173         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1174         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1175         WLAN_REASON_QSTA_NOT_USE = 37,
1176         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1177         WLAN_REASON_QSTA_TIMEOUT = 39,
1178         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1179         /* 802.11s */
1180         WLAN_REASON_MESH_PEER_CANCELED = 52,
1181         WLAN_REASON_MESH_MAX_PEERS = 53,
1182         WLAN_REASON_MESH_CONFIG = 54,
1183         WLAN_REASON_MESH_CLOSE = 55,
1184         WLAN_REASON_MESH_MAX_RETRIES = 56,
1185         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1186         WLAN_REASON_MESH_INVALID_GTK = 58,
1187         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1188         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1189         WLAN_REASON_MESH_PATH_ERROR = 61,
1190         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1191         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1192         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1193         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1194         WLAN_REASON_MESH_CHAN = 66,
1195 };
1196
1197
1198 /* Information Element IDs */
1199 enum ieee80211_eid {
1200         WLAN_EID_SSID = 0,
1201         WLAN_EID_SUPP_RATES = 1,
1202         WLAN_EID_FH_PARAMS = 2,
1203         WLAN_EID_DS_PARAMS = 3,
1204         WLAN_EID_CF_PARAMS = 4,
1205         WLAN_EID_TIM = 5,
1206         WLAN_EID_IBSS_PARAMS = 6,
1207         WLAN_EID_CHALLENGE = 16,
1208
1209         WLAN_EID_COUNTRY = 7,
1210         WLAN_EID_HP_PARAMS = 8,
1211         WLAN_EID_HP_TABLE = 9,
1212         WLAN_EID_REQUEST = 10,
1213
1214         WLAN_EID_QBSS_LOAD = 11,
1215         WLAN_EID_EDCA_PARAM_SET = 12,
1216         WLAN_EID_TSPEC = 13,
1217         WLAN_EID_TCLAS = 14,
1218         WLAN_EID_SCHEDULE = 15,
1219         WLAN_EID_TS_DELAY = 43,
1220         WLAN_EID_TCLAS_PROCESSING = 44,
1221         WLAN_EID_QOS_CAPA = 46,
1222         /* 802.11s */
1223         WLAN_EID_MESH_CONFIG = 113,
1224         WLAN_EID_MESH_ID = 114,
1225         WLAN_EID_LINK_METRIC_REPORT = 115,
1226         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1227         WLAN_EID_PEER_MGMT = 117,
1228         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1229         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1230         WLAN_EID_BEACON_TIMING = 120,
1231         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1232         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1233         WLAN_EID_MCCAOP_ADVERT = 123,
1234         WLAN_EID_MCCAOP_TEARDOWN = 124,
1235         WLAN_EID_GANN = 125,
1236         WLAN_EID_RANN = 126,
1237         WLAN_EID_PREQ = 130,
1238         WLAN_EID_PREP = 131,
1239         WLAN_EID_PERR = 132,
1240         WLAN_EID_PXU = 137,
1241         WLAN_EID_PXUC = 138,
1242         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1243         WLAN_EID_MIC = 140,
1244
1245         WLAN_EID_PWR_CONSTRAINT = 32,
1246         WLAN_EID_PWR_CAPABILITY = 33,
1247         WLAN_EID_TPC_REQUEST = 34,
1248         WLAN_EID_TPC_REPORT = 35,
1249         WLAN_EID_SUPPORTED_CHANNELS = 36,
1250         WLAN_EID_CHANNEL_SWITCH = 37,
1251         WLAN_EID_MEASURE_REQUEST = 38,
1252         WLAN_EID_MEASURE_REPORT = 39,
1253         WLAN_EID_QUIET = 40,
1254         WLAN_EID_IBSS_DFS = 41,
1255
1256         WLAN_EID_ERP_INFO = 42,
1257         WLAN_EID_EXT_SUPP_RATES = 50,
1258
1259         WLAN_EID_HT_CAPABILITY = 45,
1260         WLAN_EID_HT_INFORMATION = 61,
1261
1262         WLAN_EID_RSN = 48,
1263         WLAN_EID_MMIE = 76,
1264         WLAN_EID_WPA = 221,
1265         WLAN_EID_GENERIC = 221,
1266         WLAN_EID_VENDOR_SPECIFIC = 221,
1267         WLAN_EID_QOS_PARAMETER = 222,
1268
1269         WLAN_EID_AP_CHAN_REPORT = 51,
1270         WLAN_EID_NEIGHBOR_REPORT = 52,
1271         WLAN_EID_RCPI = 53,
1272         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1273         WLAN_EID_ANTENNA_INFO = 64,
1274         WLAN_EID_RSNI = 65,
1275         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1276         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1277         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1278         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1279         WLAN_EID_MULTIPLE_BSSID = 71,
1280         WLAN_EID_BSS_COEX_2040 = 72,
1281         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1282         WLAN_EID_EXT_CAPABILITY = 127,
1283
1284         WLAN_EID_MOBILITY_DOMAIN = 54,
1285         WLAN_EID_FAST_BSS_TRANSITION = 55,
1286         WLAN_EID_TIMEOUT_INTERVAL = 56,
1287         WLAN_EID_RIC_DATA = 57,
1288         WLAN_EID_RIC_DESCRIPTOR = 75,
1289
1290         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1291         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1292         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1293 };
1294
1295 /* Action category code */
1296 enum ieee80211_category {
1297         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1298         WLAN_CATEGORY_QOS = 1,
1299         WLAN_CATEGORY_DLS = 2,
1300         WLAN_CATEGORY_BACK = 3,
1301         WLAN_CATEGORY_PUBLIC = 4,
1302         WLAN_CATEGORY_HT = 7,
1303         WLAN_CATEGORY_SA_QUERY = 8,
1304         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1305         WLAN_CATEGORY_MESH_ACTION = 13,
1306         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1307         WLAN_CATEGORY_SELF_PROTECTED = 15,
1308         WLAN_CATEGORY_WMM = 17,
1309         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1310         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1311 };
1312
1313 /* SPECTRUM_MGMT action code */
1314 enum ieee80211_spectrum_mgmt_actioncode {
1315         WLAN_ACTION_SPCT_MSR_REQ = 0,
1316         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1317         WLAN_ACTION_SPCT_TPC_REQ = 2,
1318         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1319         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1320 };
1321
1322 /* HT action codes */
1323 enum ieee80211_ht_actioncode {
1324         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1325         WLAN_HT_ACTION_SMPS = 1,
1326         WLAN_HT_ACTION_PSMP = 2,
1327         WLAN_HT_ACTION_PCO_PHASE = 3,
1328         WLAN_HT_ACTION_CSI = 4,
1329         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1330         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1331         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1332 };
1333
1334 /* Self Protected Action codes */
1335 enum ieee80211_self_protected_actioncode {
1336         WLAN_SP_RESERVED = 0,
1337         WLAN_SP_MESH_PEERING_OPEN = 1,
1338         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1339         WLAN_SP_MESH_PEERING_CLOSE = 3,
1340         WLAN_SP_MGK_INFORM = 4,
1341         WLAN_SP_MGK_ACK = 5,
1342 };
1343
1344 /* Mesh action codes */
1345 enum ieee80211_mesh_actioncode {
1346         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1347         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1348         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1349         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1350         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1351         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1352         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1353         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1354         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1355         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1356         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1357 };
1358
1359 /* Security key length */
1360 enum ieee80211_key_len {
1361         WLAN_KEY_LEN_WEP40 = 5,
1362         WLAN_KEY_LEN_WEP104 = 13,
1363         WLAN_KEY_LEN_CCMP = 16,
1364         WLAN_KEY_LEN_TKIP = 32,
1365         WLAN_KEY_LEN_AES_CMAC = 16,
1366 };
1367
1368 /**
1369  * enum - mesh path selection protocol identifier
1370  *
1371  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1372  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1373  * be specified in a vendor specific information element
1374  */
1375 enum {
1376         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1377         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1378 };
1379
1380 /**
1381  * enum - mesh path selection metric identifier
1382  *
1383  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1384  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1385  * specified in a vendor specific information element
1386  */
1387 enum {
1388         IEEE80211_PATH_METRIC_AIRTIME = 0,
1389         IEEE80211_PATH_METRIC_VENDOR = 255,
1390 };
1391
1392
1393 /*
1394  * IEEE 802.11-2007 7.3.2.9 Country information element
1395  *
1396  * Minimum length is 8 octets, ie len must be evenly
1397  * divisible by 2
1398  */
1399
1400 /* Although the spec says 8 I'm seeing 6 in practice */
1401 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1402
1403 /* The Country String field of the element shall be 3 octets in length */
1404 #define IEEE80211_COUNTRY_STRING_LEN    3
1405
1406 /*
1407  * For regulatory extension stuff see IEEE 802.11-2007
1408  * Annex I (page 1141) and Annex J (page 1147). Also
1409  * review 7.3.2.9.
1410  *
1411  * When dot11RegulatoryClassesRequired is true and the
1412  * first_channel/reg_extension_id is >= 201 then the IE
1413  * compromises of the 'ext' struct represented below:
1414  *
1415  *  - Regulatory extension ID - when generating IE this just needs
1416  *    to be monotonically increasing for each triplet passed in
1417  *    the IE
1418  *  - Regulatory class - index into set of rules
1419  *  - Coverage class - index into air propagation time (Table 7-27),
1420  *    in microseconds, you can compute the air propagation time from
1421  *    the index by multiplying by 3, so index 10 yields a propagation
1422  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1423  *    yet. A value of 0 inicates air propagation of <= 1 us.
1424  *
1425  *  See also Table I.2 for Emission limit sets and table
1426  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1427  *  a reg_class to an emission limit set and behavior limit set.
1428  */
1429 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1430
1431 /*
1432  *  Channels numbers in the IE must be monotonically increasing
1433  *  if dot11RegulatoryClassesRequired is not true.
1434  *
1435  *  If dot11RegulatoryClassesRequired is true consecutive
1436  *  subband triplets following a regulatory triplet shall
1437  *  have monotonically increasing first_channel number fields.
1438  *
1439  *  Channel numbers shall not overlap.
1440  *
1441  *  Note that max_power is signed.
1442  */
1443 struct ieee80211_country_ie_triplet {
1444         union {
1445                 struct {
1446                         u8 first_channel;
1447                         u8 num_channels;
1448                         s8 max_power;
1449                 } __attribute__ ((packed)) chans;
1450                 struct {
1451                         u8 reg_extension_id;
1452                         u8 reg_class;
1453                         u8 coverage_class;
1454                 } __attribute__ ((packed)) ext;
1455         };
1456 } __attribute__ ((packed));
1457
1458 enum ieee80211_timeout_interval_type {
1459         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1460         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1461         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1462 };
1463
1464 /* BACK action code */
1465 enum ieee80211_back_actioncode {
1466         WLAN_ACTION_ADDBA_REQ = 0,
1467         WLAN_ACTION_ADDBA_RESP = 1,
1468         WLAN_ACTION_DELBA = 2,
1469 };
1470
1471 /* BACK (block-ack) parties */
1472 enum ieee80211_back_parties {
1473         WLAN_BACK_RECIPIENT = 0,
1474         WLAN_BACK_INITIATOR = 1,
1475 };
1476
1477 /* SA Query action */
1478 enum ieee80211_sa_query_action {
1479         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1480         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1481 };
1482
1483
1484 /* cipher suite selectors */
1485 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1486 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1487 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1488 /* reserved:                            0x000FAC03 */
1489 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1490 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1491 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1492
1493 /* AKM suite selectors */
1494 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1495 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1496 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1497 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1498
1499 #define WLAN_MAX_KEY_LEN                32
1500
1501 #define WLAN_PMKID_LEN                  16
1502
1503 /*
1504  * WMM/802.11e Tspec Element
1505  */
1506 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1507 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1508
1509 enum ieee80211_tspec_status_code {
1510         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1511         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1512 };
1513
1514 struct ieee80211_tspec_ie {
1515         u8 element_id;
1516         u8 len;
1517         u8 oui[3];
1518         u8 oui_type;
1519         u8 oui_subtype;
1520         u8 version;
1521         __le16 tsinfo;
1522         u8 tsinfo_resvd;
1523         __le16 nominal_msdu;
1524         __le16 max_msdu;
1525         __le32 min_service_int;
1526         __le32 max_service_int;
1527         __le32 inactivity_int;
1528         __le32 suspension_int;
1529         __le32 service_start_time;
1530         __le32 min_data_rate;
1531         __le32 mean_data_rate;
1532         __le32 peak_data_rate;
1533         __le32 max_burst_size;
1534         __le32 delay_bound;
1535         __le32 min_phy_rate;
1536         __le16 sba;
1537         __le16 medium_time;
1538 } __packed;
1539
1540 /**
1541  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1542  * @hdr: the frame
1543  *
1544  * The qos ctrl bytes come after the frame_control, duration, seq_num
1545  * and 3 or 4 addresses of length ETH_ALEN.
1546  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1547  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1548  */
1549 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1550 {
1551         if (ieee80211_has_a4(hdr->frame_control))
1552                 return (u8 *)hdr + 30;
1553         else
1554                 return (u8 *)hdr + 24;
1555 }
1556
1557 /**
1558  * ieee80211_get_SA - get pointer to SA
1559  * @hdr: the frame
1560  *
1561  * Given an 802.11 frame, this function returns the offset
1562  * to the source address (SA). It does not verify that the
1563  * header is long enough to contain the address, and the
1564  * header must be long enough to contain the frame control
1565  * field.
1566  */
1567 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1568 {
1569         if (ieee80211_has_a4(hdr->frame_control))
1570                 return hdr->addr4;
1571         if (ieee80211_has_fromds(hdr->frame_control))
1572                 return hdr->addr3;
1573         return hdr->addr2;
1574 }
1575
1576 /**
1577  * ieee80211_get_DA - get pointer to DA
1578  * @hdr: the frame
1579  *
1580  * Given an 802.11 frame, this function returns the offset
1581  * to the destination address (DA). It does not verify that
1582  * the header is long enough to contain the address, and the
1583  * header must be long enough to contain the frame control
1584  * field.
1585  */
1586 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1587 {
1588         if (ieee80211_has_tods(hdr->frame_control))
1589                 return hdr->addr3;
1590         else
1591                 return hdr->addr1;
1592 }
1593
1594 /**
1595  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1596  * @hdr: the frame (buffer must include at least the first octet of payload)
1597  */
1598 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1599 {
1600         if (ieee80211_is_disassoc(hdr->frame_control) ||
1601             ieee80211_is_deauth(hdr->frame_control))
1602                 return true;
1603
1604         if (ieee80211_is_action(hdr->frame_control)) {
1605                 u8 *category;
1606
1607                 /*
1608                  * Action frames, excluding Public Action frames, are Robust
1609                  * Management Frames. However, if we are looking at a Protected
1610                  * frame, skip the check since the data may be encrypted and
1611                  * the frame has already been found to be a Robust Management
1612                  * Frame (by the other end).
1613                  */
1614                 if (ieee80211_has_protected(hdr->frame_control))
1615                         return true;
1616                 category = ((u8 *) hdr) + 24;
1617                 return *category != WLAN_CATEGORY_PUBLIC &&
1618                         *category != WLAN_CATEGORY_HT &&
1619                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1620                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1621         }
1622
1623         return false;
1624 }
1625
1626 /**
1627  * ieee80211_fhss_chan_to_freq - get channel frequency
1628  * @channel: the FHSS channel
1629  *
1630  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1631  * Ref IEEE 802.11-2007 section 14.6
1632  */
1633 static inline int ieee80211_fhss_chan_to_freq(int channel)
1634 {
1635         if ((channel > 1) && (channel < 96))
1636                 return channel + 2400;
1637         else
1638                 return -1;
1639 }
1640
1641 /**
1642  * ieee80211_freq_to_fhss_chan - get channel
1643  * @freq: the channels frequency
1644  *
1645  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1646  * Ref IEEE 802.11-2007 section 14.6
1647  */
1648 static inline int ieee80211_freq_to_fhss_chan(int freq)
1649 {
1650         if ((freq > 2401) && (freq < 2496))
1651                 return freq - 2400;
1652         else
1653                 return -1;
1654 }
1655
1656 /**
1657  * ieee80211_dsss_chan_to_freq - get channel center frequency
1658  * @channel: the DSSS channel
1659  *
1660  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1661  * Ref IEEE 802.11-2007 section 15.6
1662  */
1663 static inline int ieee80211_dsss_chan_to_freq(int channel)
1664 {
1665         if ((channel > 0) && (channel < 14))
1666                 return 2407 + (channel * 5);
1667         else if (channel == 14)
1668                 return 2484;
1669         else
1670                 return -1;
1671 }
1672
1673 /**
1674  * ieee80211_freq_to_dsss_chan - get channel
1675  * @freq: the frequency
1676  *
1677  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1678  * Ref IEEE 802.11-2007 section 15.6
1679  *
1680  * This routine selects the channel with the closest center frequency.
1681  */
1682 static inline int ieee80211_freq_to_dsss_chan(int freq)
1683 {
1684         if ((freq >= 2410) && (freq < 2475))
1685                 return (freq - 2405) / 5;
1686         else if ((freq >= 2482) && (freq < 2487))
1687                 return 14;
1688         else
1689                 return -1;
1690 }
1691
1692 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1693  * Ref IEEE 802.11-2007 section 18.4.6.2
1694  *
1695  * The channels and frequencies are the same as those defined for DSSS
1696  */
1697 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1698 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1699
1700 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1701  * Ref IEEE 802.11-2007 section 19.4.2
1702  */
1703 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1704 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1705
1706 /**
1707  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1708  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1709  * @channel: the OFDM channel
1710  *
1711  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1712  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1713  */
1714 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1715 {
1716         if ((channel > 0) && (channel <= 200) &&
1717             (s_freq >= 4000))
1718                 return s_freq + (channel * 5);
1719         else
1720                 return -1;
1721 }
1722
1723 /**
1724  * ieee80211_freq_to_ofdm_channel - get channel
1725  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1726  * @freq: the frequency
1727  *
1728  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1729  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1730  *
1731  * This routine selects the channel with the closest center frequency.
1732  */
1733 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1734 {
1735         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1736             (s_freq >= 4000))
1737                 return (freq + 2 - s_freq) / 5;
1738         else
1739                 return -1;
1740 }
1741
1742 /**
1743  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1744  * @tu: the TUs
1745  */
1746 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1747 {
1748         return 1024 * tu;
1749 }
1750
1751 /**
1752  * ieee80211_check_tim - check if AID bit is set in TIM
1753  * @tim: the TIM IE
1754  * @tim_len: length of the TIM IE
1755  * @aid: the AID to look for
1756  */
1757 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1758                                        u8 tim_len, u16 aid)
1759 {
1760         u8 mask;
1761         u8 indexn0, indexn1, indexn2;
1762
1763         if (unlikely(!tim || tim_len < sizeof(*tim)))
1764                 return false;
1765
1766         aid &= 0x3fff;
1767         indexn0 = aid / 8;
1768         mask  = 1 << (aid & 7);
1769
1770         indexn1 = tim->bitmap_ctrl & 0xfe;
1771         indexn2 = tim_len + indexn1 - 4;
1772
1773         if (indexn0 < indexn1 || indexn0 > indexn2)
1774                 return false;
1775
1776         indexn0 -= indexn1;
1777
1778         return !!(tim->virtual_map[indexn0] & mask);
1779 }
1780
1781 #endif /* __LINUX_IEEE80211_H */